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gstreamer/gst/isomp4/gstqtmux.c
Edward Hervey 7229bfd068 qtmux: Add comments and doc about prefill mode
2018-04-09 15:25:50 +02:00

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/* Quicktime muxer plugin for GStreamer
* Copyright (C) 2008-2010 Thiago Santos <thiagoss@embedded.ufcg.edu.br>
* Copyright (C) 2008 Mark Nauwelaerts <mnauw@users.sf.net>
* Copyright (C) 2010 Nokia Corporation. All rights reserved.
* Copyright (C) 2014 Jan Schmidt <jan@centricular.com>
* Contact: Stefan Kost <stefan.kost@nokia.com>
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/*
* Unless otherwise indicated, Source Code is licensed under MIT license.
* See further explanation attached in License Statement (distributed in the file
* LICENSE).
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is furnished to do
* so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
/**
* SECTION:element-qtmux
* @short_description: Muxer for quicktime(.mov) files
*
* This element merges streams (audio and video) into QuickTime(.mov) files.
*
* The following background intends to explain why various similar muxers
* are present in this plugin.
*
* The <ulink url="http://www.apple.com/quicktime/resources/qtfileformat.pdf">
* QuickTime file format specification</ulink> served as basis for the MP4 file
* format specification (mp4mux), and as such the QuickTime file structure is
* nearly identical to the so-called ISO Base Media file format defined in
* ISO 14496-12 (except for some media specific parts).
* In turn, the latter ISO Base Media format was further specialized as a
* Motion JPEG-2000 file format in ISO 15444-3 (mj2mux)
* and in various 3GPP(2) specs (gppmux).
* The fragmented file features defined (only) in ISO Base Media are used by
* ISMV files making up (a.o.) Smooth Streaming (ismlmux).
*
* A few properties (#GstQTMux:movie-timescale, #GstQTMux:trak-timescale,
* #GstQTMuxPad:trak-timescale) allow adjusting some technical parameters,
* which might be useful in (rare) cases to resolve compatibility issues in
* some situations.
*
* Some other properties influence the result more fundamentally.
* A typical mov/mp4 file's metadata (aka moov) is located at the end of the
* file, somewhat contrary to this usually being called "the header".
* However, a #GstQTMux:faststart file will (with some effort) arrange this to
* be located near start of the file, which then allows it e.g. to be played
* while downloading. Alternatively, rather than having one chunk of metadata at
* start (or end), there can be some metadata at start and most of the other
* data can be spread out into fragments of #GstQTMux:fragment-duration.
* If such fragmented layout is intended for streaming purposes, then
* #GstQTMux:streamable allows foregoing to add index metadata (at the end of
* file).
*
* When the maximum duration to be recorded can be known in advance, #GstQTMux
* also supports a 'Robust Muxing' mode. In robust muxing mode, space for the
* headers are reserved at the start of muxing, and rewritten at a configurable
* interval, so that the output file is always playable, even if the recording
* is interrupted uncleanly by a crash. Robust muxing mode requires a seekable
* output, such as filesink, because it needs to rewrite the start of the file.
*
* To enable robust muxing mode, set the #GstQTMux::reserved-moov-update-period
* and #GstQTMux::reserved-max-duration property. Also present is the
* #GstQTMux::reserved-bytes-per-sec property, which can be increased if
* for some reason the default is not large enough and the initial reserved
* space for headers is too small. Applications can monitor the
* #GstQTMux::reserved-duration-remaining property to see how close to full
* the reserved space is becoming.
*
* Applications that wish to be able to use/edit a file while it is being
* written to by live content, can use the "Robust Prefill Muxing" mode. That
* mode is a variant of the "Robust Muxing" mode in that it will pre-allocate a
* completely valid header from the start for all tracks (i.e. it appears as
* though the file is "reserved-max-duration" long with all samples
* present). This mode can be enabled by setting the
* #GstQTMux::reserved-moov-update-period and #GstQTMux::reserved-prefill
* properties. Note that this mode is only possible with input streams that have
* a fixed sample size (such as raw audio and Prores Video) and that don't
* have reordered samples.
*
* <refsect2>
* <title>Example pipelines</title>
* |[
* gst-launch-1.0 v4l2src num-buffers=500 ! video/x-raw,width=320,height=240 ! videoconvert ! qtmux ! filesink location=video.mov
* ]|
* Records a video stream captured from a v4l2 device and muxes it into a qt file.
* </refsect2>
*/
/*
* Based on avimux
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <glib/gstdio.h>
#include <gst/gst.h>
#include <gst/base/gstcollectpads.h>
#include <gst/base/gstbytereader.h>
#include <gst/base/gstbitreader.h>
#include <gst/audio/audio.h>
#include <gst/video/video.h>
#include <gst/tag/tag.h>
#include <gst/pbutils/pbutils.h>
#include <sys/types.h>
#ifdef G_OS_WIN32
#include <io.h> /* lseek, open, close, read */
#undef lseek
#define lseek _lseeki64
#undef off_t
#define off_t guint64
#endif
#ifdef _MSC_VER
#define ftruncate g_win32_ftruncate
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include "gstqtmux.h"
GST_DEBUG_CATEGORY_STATIC (gst_qt_mux_debug);
#define GST_CAT_DEFAULT gst_qt_mux_debug
#ifndef ABSDIFF
#define ABSDIFF(a, b) ((a) > (b) ? (a) - (b) : (b) - (a))
#endif
/* Hacker notes.
*
* The basic building blocks of MP4 files are:
* - an 'ftyp' box at the very start
* - an 'mdat' box which contains the raw audio/video/subtitle data;
* this is just a bunch of bytes, completely unframed and possibly
* unordered with no additional meta-information
* - a 'moov' box that contains information about the different streams
* and what they contain, as well as sample tables for each stream
* that tell the demuxer where in the mdat box each buffer/sample is
* and what its duration/timestamp etc. is, and whether it's a
* keyframe etc.
* Additionally, fragmented MP4 works by writing chunks of data in
* pairs of 'moof' and 'mdat' boxes:
* - 'moof' boxes, header preceding each mdat fragment describing the
* contents, like a moov but only for that fragment.
* - a 'mfra' box for Fragmented MP4, which is written at the end and
* contains a summary of all fragments and seek tables.
*
* Currently mp4mux can work in 4 different modes / generate 4 types
* of output files/streams:
*
* - Normal mp4: mp4mux will write a little ftyp identifier at the
* beginning, then start an mdat box into which it will write all the
* sample data. At EOS it will then write the moov header with track
* headers and sample tables at the end of the file, and rewrite the
* start of the file to fix up the mdat box size at the beginning.
* It has to wait for EOS to write the moov (which includes the
* sample tables) because it doesn't know how much space those
* tables will be. The output downstream must be seekable to rewrite
* the mdat box at EOS.
*
* - Fragmented mp4: moov header with track headers at start
* but no sample table, followed by N fragments, each containing
* track headers with sample tables followed by some data. Downstream
* does not need to be seekable if the 'streamable' flag is TRUE,
* as the final mfra and total duration will be omitted.
*
* - Fast-start mp4: the goal here is to create a file where the moov
* headers are at the beginning; what mp4mux will do is write all
* sample data into a temp file and build moov header plus sample
* tables in memory and then when EOS comes, it will push out the
* moov header plus sample tables at the beginning, followed by the
* mdat sample data at the end which is read in from the temp file
* Files created in this mode are better for streaming over the
* network, since the client doesn't have to seek to the end of the
* file to get the headers, but it requires copying all sample data
* out of the temp file at EOS, which can be expensive. Downstream does
* not need to be seekable, because of the use of the temp file.
*
* - Robust Muxing mode: In this mode, qtmux uses the reserved-max-duration
* and reserved-moov-update-period properties to reserve free space
* at the start of the file and periodically write the MOOV atom out
* to it. That means that killing the muxing at any point still
* results in a playable file, at the cost of wasting some amount of
* free space at the start of file. The approximate recording duration
* has to be known in advance to estimate how much free space to reserve
* for the moov, and the downstream must be seekable.
* If the moov header grows larger than the reserved space, an error
* is generated - so it's better to over-estimate the amount of space
* to reserve. To ensure the file is playable at any point, the moov
* is updated using a 'ping-pong' strategy, so the output is never in
* an invalid state.
*/
#ifndef GST_REMOVE_DEPRECATED
enum
{
DTS_METHOD_DD,
DTS_METHOD_REORDER,
DTS_METHOD_ASC
};
static GType
gst_qt_mux_dts_method_get_type (void)
{
static GType gst_qt_mux_dts_method = 0;
if (!gst_qt_mux_dts_method) {
static const GEnumValue dts_methods[] = {
{DTS_METHOD_DD, "delta/duration", "dd"},
{DTS_METHOD_REORDER, "reorder", "reorder"},
{DTS_METHOD_ASC, "ascending", "asc"},
{0, NULL, NULL},
};
gst_qt_mux_dts_method =
g_enum_register_static ("GstQTMuxDtsMethods", dts_methods);
}
return gst_qt_mux_dts_method;
}
#define GST_TYPE_QT_MUX_DTS_METHOD \
(gst_qt_mux_dts_method_get_type ())
#endif
enum
{
PROP_PAD_0,
PROP_PAD_TRAK_TIMESCALE,
};
#define DEFAULT_PAD_TRAK_TIMESCALE 0
GType gst_qt_mux_pad_get_type (void);
#define GST_TYPE_QT_MUX_PAD \
(gst_qt_mux_pad_get_type())
#define GST_QT_MUX_PAD(obj) \
(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_QT_MUX_PAD, GstQTMuxPad))
#define GST_QT_MUX_PAD_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_QT_MUX_PAD, GstQTMuxPadClass))
#define GST_IS_QT_MUX_PAD(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_QT_MUX_PAD))
#define GST_IS_QT_MUX_PAD_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_QT_MUX_PAD))
#define GST_QT_MUX_PAD_CAST(obj) \
((GstQTMuxPad *)(obj))
typedef struct _GstQTMuxPad GstQTMuxPad;
typedef struct _GstQTMuxPadClass GstQTMuxPadClass;
struct _GstQTMuxPad
{
GstPad parent;
guint32 trak_timescale;
};
struct _GstQTMuxPadClass
{
GstPadClass parent;
};
G_DEFINE_TYPE (GstQTMuxPad, gst_qt_mux_pad, GST_TYPE_PAD);
static void
gst_qt_mux_pad_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstQTMuxPad *pad = GST_QT_MUX_PAD_CAST (object);
GST_OBJECT_LOCK (pad);
switch (prop_id) {
case PROP_PAD_TRAK_TIMESCALE:
pad->trak_timescale = g_value_get_uint (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
GST_OBJECT_UNLOCK (pad);
}
static void
gst_qt_mux_pad_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
GstQTMuxPad *pad = GST_QT_MUX_PAD_CAST (object);
GST_OBJECT_LOCK (pad);
switch (prop_id) {
case PROP_PAD_TRAK_TIMESCALE:
g_value_set_uint (value, pad->trak_timescale);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
GST_OBJECT_UNLOCK (pad);
}
static void
gst_qt_mux_pad_class_init (GstQTMuxPadClass * klass)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
gobject_class->get_property = gst_qt_mux_pad_get_property;
gobject_class->set_property = gst_qt_mux_pad_set_property;
g_object_class_install_property (gobject_class, PROP_PAD_TRAK_TIMESCALE,
g_param_spec_uint ("trak-timescale", "Track timescale",
"Timescale to use for this pad's trak (units per second, 0 is automatic)",
0, G_MAXUINT32, DEFAULT_PAD_TRAK_TIMESCALE,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
}
static void
gst_qt_mux_pad_init (GstQTMuxPad * pad)
{
pad->trak_timescale = DEFAULT_PAD_TRAK_TIMESCALE;
}
static guint32
gst_qt_mux_pad_get_timescale (GstQTMuxPad * pad)
{
guint32 timescale;
GST_OBJECT_LOCK (pad);
timescale = pad->trak_timescale;
GST_OBJECT_UNLOCK (pad);
return timescale;
}
/* QTMux signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
PROP_0,
PROP_MOVIE_TIMESCALE,
PROP_TRAK_TIMESCALE,
PROP_FAST_START,
PROP_FAST_START_TEMP_FILE,
PROP_MOOV_RECOV_FILE,
PROP_FRAGMENT_DURATION,
PROP_STREAMABLE,
PROP_RESERVED_MAX_DURATION,
PROP_RESERVED_DURATION_REMAINING,
PROP_RESERVED_MOOV_UPDATE_PERIOD,
PROP_RESERVED_BYTES_PER_SEC,
PROP_RESERVED_PREFILL,
#ifndef GST_REMOVE_DEPRECATED
PROP_DTS_METHOD,
#endif
PROP_DO_CTTS,
PROP_INTERLEAVE_BYTES,
PROP_INTERLEAVE_TIME,
PROP_MAX_RAW_AUDIO_DRIFT,
};
/* some spare for header size as well */
#define MDAT_LARGE_FILE_LIMIT ((guint64) 1024 * 1024 * 1024 * 2)
#define DEFAULT_MOVIE_TIMESCALE 0
#define DEFAULT_TRAK_TIMESCALE 0
#define DEFAULT_DO_CTTS TRUE
#define DEFAULT_FAST_START FALSE
#define DEFAULT_FAST_START_TEMP_FILE NULL
#define DEFAULT_MOOV_RECOV_FILE NULL
#define DEFAULT_FRAGMENT_DURATION 0
#define DEFAULT_STREAMABLE TRUE
#ifndef GST_REMOVE_DEPRECATED
#define DEFAULT_DTS_METHOD DTS_METHOD_REORDER
#endif
#define DEFAULT_RESERVED_MAX_DURATION GST_CLOCK_TIME_NONE
#define DEFAULT_RESERVED_MOOV_UPDATE_PERIOD GST_CLOCK_TIME_NONE
#define DEFAULT_RESERVED_BYTES_PER_SEC_PER_TRAK 550
#define DEFAULT_RESERVED_PREFILL FALSE
#define DEFAULT_INTERLEAVE_BYTES 0
#define DEFAULT_INTERLEAVE_TIME 250*GST_MSECOND
#define DEFAULT_MAX_RAW_AUDIO_DRIFT 40 * GST_MSECOND
static void gst_qt_mux_finalize (GObject * object);
static GstStateChangeReturn gst_qt_mux_change_state (GstElement * element,
GstStateChange transition);
/* property functions */
static void gst_qt_mux_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_qt_mux_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
/* pad functions */
static GstPad *gst_qt_mux_request_new_pad (GstElement * element,
GstPadTemplate * templ, const gchar * name, const GstCaps * caps);
static void gst_qt_mux_release_pad (GstElement * element, GstPad * pad);
/* event */
static gboolean gst_qt_mux_sink_event (GstCollectPads * pads,
GstCollectData * data, GstEvent * event, gpointer user_data);
static GstFlowReturn gst_qt_mux_collected (GstCollectPads * pads,
gpointer user_data);
static GstFlowReturn gst_qt_mux_add_buffer (GstQTMux * qtmux, GstQTPad * pad,
GstBuffer * buf);
static GstFlowReturn
gst_qt_mux_robust_recording_rewrite_moov (GstQTMux * qtmux);
static void gst_qt_mux_update_global_statistics (GstQTMux * qtmux);
static void gst_qt_mux_update_edit_lists (GstQTMux * qtmux);
static GstElementClass *parent_class = NULL;
static void
gst_qt_mux_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
GstQTMuxClass *klass = (GstQTMuxClass *) g_class;
GstQTMuxClassParams *params;
GstPadTemplate *videosinktempl, *audiosinktempl, *subtitlesinktempl;
GstPadTemplate *srctempl;
gchar *longname, *description;
params =
(GstQTMuxClassParams *) g_type_get_qdata (G_OBJECT_CLASS_TYPE (g_class),
GST_QT_MUX_PARAMS_QDATA);
g_assert (params != NULL);
/* construct the element details struct */
longname = g_strdup_printf ("%s Muxer", params->prop->long_name);
description = g_strdup_printf ("Multiplex audio and video into a %s file",
params->prop->long_name);
gst_element_class_set_static_metadata (element_class, longname,
"Codec/Muxer", description,
"Thiago Sousa Santos <thiagoss@embedded.ufcg.edu.br>");
g_free (longname);
g_free (description);
/* pad templates */
srctempl = gst_pad_template_new ("src", GST_PAD_SRC,
GST_PAD_ALWAYS, params->src_caps);
gst_element_class_add_pad_template (element_class, srctempl);
if (params->audio_sink_caps) {
audiosinktempl = gst_pad_template_new_with_gtype ("audio_%u",
GST_PAD_SINK, GST_PAD_REQUEST, params->audio_sink_caps,
GST_TYPE_QT_MUX_PAD);
gst_element_class_add_pad_template (element_class, audiosinktempl);
}
if (params->video_sink_caps) {
videosinktempl = gst_pad_template_new_with_gtype ("video_%u",
GST_PAD_SINK, GST_PAD_REQUEST, params->video_sink_caps,
GST_TYPE_QT_MUX_PAD);
gst_element_class_add_pad_template (element_class, videosinktempl);
}
if (params->subtitle_sink_caps) {
subtitlesinktempl = gst_pad_template_new_with_gtype ("subtitle_%u",
GST_PAD_SINK, GST_PAD_REQUEST, params->subtitle_sink_caps,
GST_TYPE_QT_MUX_PAD);
gst_element_class_add_pad_template (element_class, subtitlesinktempl);
}
klass->format = params->prop->format;
}
static void
gst_qt_mux_class_init (GstQTMuxClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
GParamFlags streamable_flags;
const gchar *streamable_desc;
gboolean streamable;
#define STREAMABLE_DESC "If set to true, the output should be as if it is to "\
"be streamed and hence no indexes written or duration written."
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
parent_class = g_type_class_peek_parent (klass);
gobject_class->finalize = gst_qt_mux_finalize;
gobject_class->get_property = gst_qt_mux_get_property;
gobject_class->set_property = gst_qt_mux_set_property;
streamable_flags = G_PARAM_READWRITE | G_PARAM_CONSTRUCT;
if (klass->format == GST_QT_MUX_FORMAT_ISML) {
streamable_desc = STREAMABLE_DESC;
streamable = DEFAULT_STREAMABLE;
} else {
streamable_desc =
STREAMABLE_DESC " (DEPRECATED, only valid for fragmented MP4)";
streamable_flags |= G_PARAM_DEPRECATED;
streamable = FALSE;
}
g_object_class_install_property (gobject_class, PROP_MOVIE_TIMESCALE,
g_param_spec_uint ("movie-timescale", "Movie timescale",
"Timescale to use in the movie (units per second, 0 == default)",
0, G_MAXUINT32, DEFAULT_MOVIE_TIMESCALE,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_TRAK_TIMESCALE,
g_param_spec_uint ("trak-timescale", "Track timescale",
"Timescale to use for the tracks (units per second, 0 is automatic)",
0, G_MAXUINT32, DEFAULT_TRAK_TIMESCALE,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_DO_CTTS,
g_param_spec_boolean ("presentation-time",
"Include presentation-time info",
"Calculate and include presentation/composition time "
"(in addition to decoding time)", DEFAULT_DO_CTTS,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
#ifndef GST_REMOVE_DEPRECATED
g_object_class_install_property (gobject_class, PROP_DTS_METHOD,
g_param_spec_enum ("dts-method", "dts-method",
"Method to determine DTS time (DEPRECATED)",
GST_TYPE_QT_MUX_DTS_METHOD, DEFAULT_DTS_METHOD,
G_PARAM_DEPRECATED | G_PARAM_READWRITE | G_PARAM_CONSTRUCT |
G_PARAM_STATIC_STRINGS));
#endif
g_object_class_install_property (gobject_class, PROP_FAST_START,
g_param_spec_boolean ("faststart", "Format file to faststart",
"If the file should be formatted for faststart (headers first)",
DEFAULT_FAST_START, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_FAST_START_TEMP_FILE,
g_param_spec_string ("faststart-file", "File to use for storing buffers",
"File that will be used temporarily to store data from the stream "
"when creating a faststart file. If null a filepath will be "
"created automatically", DEFAULT_FAST_START_TEMP_FILE,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_MOOV_RECOV_FILE,
g_param_spec_string ("moov-recovery-file",
"File to store data for posterior moov atom recovery",
"File to be used to store "
"data for moov atom making movie file recovery possible in case "
"of a crash during muxing. Null for disabled. (Experimental)",
DEFAULT_MOOV_RECOV_FILE,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_FRAGMENT_DURATION,
g_param_spec_uint ("fragment-duration", "Fragment duration",
"Fragment durations in ms (produce a fragmented file if > 0)",
0, G_MAXUINT32, klass->format == GST_QT_MUX_FORMAT_ISML ?
2000 : DEFAULT_FRAGMENT_DURATION,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_STREAMABLE,
g_param_spec_boolean ("streamable", "Streamable", streamable_desc,
streamable, streamable_flags | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_RESERVED_MAX_DURATION,
g_param_spec_uint64 ("reserved-max-duration",
"Reserved maximum file duration (ns)",
"When set to a value > 0, reserves space for index tables at the "
"beginning of the file.",
0, G_MAXUINT64, DEFAULT_RESERVED_MAX_DURATION,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class,
PROP_RESERVED_DURATION_REMAINING,
g_param_spec_uint64 ("reserved-duration-remaining",
"Report the approximate amount of remaining recording space (ns)",
"Reports the approximate amount of remaining moov header space "
"reserved using reserved-max-duration", 0, G_MAXUINT64, 0,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class,
PROP_RESERVED_MOOV_UPDATE_PERIOD,
g_param_spec_uint64 ("reserved-moov-update-period",
"Interval at which to update index tables (ns)",
"When used with reserved-max-duration, periodically updates the "
"index tables with information muxed so far.", 0, G_MAXUINT64,
DEFAULT_RESERVED_MOOV_UPDATE_PERIOD,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_RESERVED_BYTES_PER_SEC,
g_param_spec_uint ("reserved-bytes-per-sec",
"Reserved MOOV bytes per second, per track",
"Multiplier for converting reserved-max-duration into bytes of header to reserve, per second, per track",
0, 10000, DEFAULT_RESERVED_BYTES_PER_SEC_PER_TRAK,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_RESERVED_PREFILL,
g_param_spec_boolean ("reserved-prefill",
"Reserved Prefill Samples Table",
"Prefill samples table of reserved duration",
DEFAULT_RESERVED_PREFILL,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_INTERLEAVE_BYTES,
g_param_spec_uint64 ("interleave-bytes", "Interleave (bytes)",
"Interleave between streams in bytes",
0, G_MAXUINT64, DEFAULT_INTERLEAVE_BYTES,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_INTERLEAVE_TIME,
g_param_spec_uint64 ("interleave-time", "Interleave (time)",
"Interleave between streams in nanoseconds",
0, G_MAXUINT64, DEFAULT_INTERLEAVE_TIME,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_MAX_RAW_AUDIO_DRIFT,
g_param_spec_uint64 ("max-raw-audio-drift", "Max Raw Audio Drift",
"Maximum allowed drift of raw audio samples vs. timestamps in nanoseconds",
0, G_MAXUINT64, DEFAULT_MAX_RAW_AUDIO_DRIFT,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
gstelement_class->request_new_pad =
GST_DEBUG_FUNCPTR (gst_qt_mux_request_new_pad);
gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_qt_mux_change_state);
gstelement_class->release_pad = GST_DEBUG_FUNCPTR (gst_qt_mux_release_pad);
}
static void
gst_qt_mux_pad_reset (GstQTPad * qtpad)
{
qtpad->fourcc = 0;
qtpad->is_out_of_order = FALSE;
qtpad->sample_size = 0;
qtpad->sync = FALSE;
qtpad->last_dts = 0;
qtpad->sample_offset = 0;
qtpad->dts_adjustment = GST_CLOCK_TIME_NONE;
qtpad->first_ts = GST_CLOCK_TIME_NONE;
qtpad->first_dts = GST_CLOCK_TIME_NONE;
qtpad->prepare_buf_func = NULL;
qtpad->create_empty_buffer = NULL;
qtpad->avg_bitrate = 0;
qtpad->max_bitrate = 0;
qtpad->total_duration = 0;
qtpad->total_bytes = 0;
qtpad->sparse = FALSE;
gst_buffer_replace (&qtpad->last_buf, NULL);
if (qtpad->tags) {
gst_tag_list_unref (qtpad->tags);
qtpad->tags = NULL;
}
/* reference owned elsewhere */
qtpad->trak = NULL;
qtpad->tc_trak = NULL;
if (qtpad->traf) {
atom_traf_free (qtpad->traf);
qtpad->traf = NULL;
}
atom_array_clear (&qtpad->fragment_buffers);
if (qtpad->samples)
g_array_unref (qtpad->samples);
qtpad->samples = NULL;
/* reference owned elsewhere */
qtpad->tfra = NULL;
qtpad->first_pts = GST_CLOCK_TIME_NONE;
qtpad->tc_pos = -1;
if (qtpad->first_tc)
gst_video_time_code_free (qtpad->first_tc);
qtpad->first_tc = NULL;
if (qtpad->raw_audio_adapter)
gst_object_unref (qtpad->raw_audio_adapter);
qtpad->raw_audio_adapter = NULL;
}
/*
* Takes GstQTMux back to its initial state
*/
static void
gst_qt_mux_reset (GstQTMux * qtmux, gboolean alloc)
{
GSList *walk;
qtmux->state = GST_QT_MUX_STATE_NONE;
qtmux->header_size = 0;
qtmux->mdat_size = 0;
qtmux->moov_pos = 0;
qtmux->mdat_pos = 0;
qtmux->longest_chunk = GST_CLOCK_TIME_NONE;
qtmux->fragment_sequence = 0;
if (qtmux->ftyp) {
atom_ftyp_free (qtmux->ftyp);
qtmux->ftyp = NULL;
}
if (qtmux->moov) {
atom_moov_free (qtmux->moov);
qtmux->moov = NULL;
}
if (qtmux->mfra) {
atom_mfra_free (qtmux->mfra);
qtmux->mfra = NULL;
}
if (qtmux->fast_start_file) {
fclose (qtmux->fast_start_file);
g_remove (qtmux->fast_start_file_path);
qtmux->fast_start_file = NULL;
}
if (qtmux->moov_recov_file) {
fclose (qtmux->moov_recov_file);
qtmux->moov_recov_file = NULL;
}
for (walk = qtmux->extra_atoms; walk; walk = g_slist_next (walk)) {
AtomInfo *ainfo = (AtomInfo *) walk->data;
ainfo->free_func (ainfo->atom);
g_free (ainfo);
}
g_slist_free (qtmux->extra_atoms);
qtmux->extra_atoms = NULL;
GST_OBJECT_LOCK (qtmux);
gst_tag_setter_reset_tags (GST_TAG_SETTER (qtmux));
GST_OBJECT_UNLOCK (qtmux);
/* reset pad data */
for (walk = qtmux->sinkpads; walk; walk = g_slist_next (walk)) {
GstQTPad *qtpad = (GstQTPad *) walk->data;
gst_qt_mux_pad_reset (qtpad);
/* hm, moov_free above yanked the traks away from us,
* so do not free, but do clear */
qtpad->trak = NULL;
}
if (alloc) {
qtmux->moov = atom_moov_new (qtmux->context);
/* ensure all is as nice and fresh as request_new_pad would provide it */
for (walk = qtmux->sinkpads; walk; walk = g_slist_next (walk)) {
GstQTPad *qtpad = (GstQTPad *) walk->data;
qtpad->trak = atom_trak_new (qtmux->context);
atom_moov_add_trak (qtmux->moov, qtpad->trak);
}
}
qtmux->current_pad = NULL;
qtmux->current_chunk_size = 0;
qtmux->current_chunk_duration = 0;
qtmux->current_chunk_offset = -1;
qtmux->reserved_moov_size = 0;
qtmux->last_moov_update = GST_CLOCK_TIME_NONE;
qtmux->muxed_since_last_update = 0;
qtmux->reserved_duration_remaining = GST_CLOCK_TIME_NONE;
}
static void
gst_qt_mux_init (GstQTMux * qtmux, GstQTMuxClass * qtmux_klass)
{
GstElementClass *klass = GST_ELEMENT_CLASS (qtmux_klass);
GstPadTemplate *templ;
templ = gst_element_class_get_pad_template (klass, "src");
qtmux->srcpad = gst_pad_new_from_template (templ, "src");
gst_pad_use_fixed_caps (qtmux->srcpad);
gst_element_add_pad (GST_ELEMENT (qtmux), qtmux->srcpad);
qtmux->sinkpads = NULL;
qtmux->collect = gst_collect_pads_new ();
gst_collect_pads_set_event_function (qtmux->collect,
GST_DEBUG_FUNCPTR (gst_qt_mux_sink_event), qtmux);
gst_collect_pads_set_clip_function (qtmux->collect,
GST_DEBUG_FUNCPTR (gst_collect_pads_clip_running_time), qtmux);
gst_collect_pads_set_function (qtmux->collect,
GST_DEBUG_FUNCPTR (gst_qt_mux_collected), qtmux);
/* properties set to default upon construction */
qtmux->reserved_max_duration = DEFAULT_RESERVED_MAX_DURATION;
qtmux->reserved_moov_update_period = DEFAULT_RESERVED_MOOV_UPDATE_PERIOD;
qtmux->reserved_bytes_per_sec_per_trak =
DEFAULT_RESERVED_BYTES_PER_SEC_PER_TRAK;
qtmux->interleave_bytes = DEFAULT_INTERLEAVE_BYTES;
qtmux->interleave_time = DEFAULT_INTERLEAVE_TIME;
qtmux->max_raw_audio_drift = DEFAULT_MAX_RAW_AUDIO_DRIFT;
/* always need this */
qtmux->context =
atoms_context_new (gst_qt_mux_map_format_to_flavor (qtmux_klass->format));
/* internals to initial state */
gst_qt_mux_reset (qtmux, TRUE);
}
static void
gst_qt_mux_finalize (GObject * object)
{
GstQTMux *qtmux = GST_QT_MUX_CAST (object);
gst_qt_mux_reset (qtmux, FALSE);
g_free (qtmux->fast_start_file_path);
g_free (qtmux->moov_recov_file_path);
atoms_context_free (qtmux->context);
gst_object_unref (qtmux->collect);
g_slist_free (qtmux->sinkpads);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static GstBuffer *
gst_qt_mux_prepare_jpc_buffer (GstQTPad * qtpad, GstBuffer * buf,
GstQTMux * qtmux)
{
GstBuffer *newbuf;
GstMapInfo map;
gsize size;
GST_LOG_OBJECT (qtmux, "Preparing jpc buffer");
if (buf == NULL)
return NULL;
size = gst_buffer_get_size (buf);
newbuf = gst_buffer_new_and_alloc (size + 8);
gst_buffer_copy_into (newbuf, buf, GST_BUFFER_COPY_ALL, 8, size);
gst_buffer_map (newbuf, &map, GST_MAP_WRITE);
GST_WRITE_UINT32_BE (map.data, map.size);
GST_WRITE_UINT32_LE (map.data + 4, FOURCC_jp2c);
gst_buffer_unmap (buf, &map);
gst_buffer_unref (buf);
return newbuf;
}
static GstBuffer *
gst_qt_mux_prepare_tx3g_buffer (GstQTPad * qtpad, GstBuffer * buf,
GstQTMux * qtmux)
{
GstBuffer *newbuf;
GstMapInfo frommap;
GstMapInfo tomap;
gsize size;
const guint8 *dataend;
GST_LOG_OBJECT (qtmux, "Preparing tx3g buffer %" GST_PTR_FORMAT, buf);
if (buf == NULL)
return NULL;
gst_buffer_map (buf, &frommap, GST_MAP_READ);
dataend = memchr (frommap.data, 0, frommap.size);
size = dataend ? dataend - frommap.data : frommap.size;
newbuf = gst_buffer_new_and_alloc (size + 2);
gst_buffer_map (newbuf, &tomap, GST_MAP_WRITE);
GST_WRITE_UINT16_BE (tomap.data, size);
memcpy (tomap.data + 2, frommap.data, size);
gst_buffer_unmap (newbuf, &tomap);
gst_buffer_unmap (buf, &frommap);
gst_buffer_copy_into (newbuf, buf, GST_BUFFER_COPY_METADATA, 0, size);
/* gst_buffer_copy_into is trying to be too clever and
* won't copy duration when size is different */
GST_BUFFER_DURATION (newbuf) = GST_BUFFER_DURATION (buf);
gst_buffer_unref (buf);
return newbuf;
}
static void
gst_qt_mux_pad_add_ac3_extension (GstQTMux * qtmux, GstQTPad * qtpad,
guint8 fscod, guint8 frmsizcod, guint8 bsid, guint8 bsmod, guint8 acmod,
guint8 lfe_on)
{
AtomInfo *ext;
g_return_if_fail (qtpad->trak_ste);
ext = build_ac3_extension (fscod, bsid, bsmod, acmod, lfe_on, frmsizcod >> 1); /* bitrate_code is inside frmsizcod */
sample_table_entry_add_ext_atom (qtpad->trak_ste, ext);
}
static GstBuffer *
gst_qt_mux_prepare_parse_ac3_frame (GstQTPad * qtpad, GstBuffer * buf,
GstQTMux * qtmux)
{
GstMapInfo map;
GstByteReader reader;
guint off;
if (!gst_buffer_map (buf, &map, GST_MAP_READ)) {
GST_WARNING_OBJECT (qtpad->collect.pad, "Failed to map buffer");
return buf;
}
if (G_UNLIKELY (map.size < 8))
goto done;
gst_byte_reader_init (&reader, map.data, map.size);
off = gst_byte_reader_masked_scan_uint32 (&reader, 0xffff0000, 0x0b770000,
0, map.size);
if (off != -1) {
GstBitReader bits;
guint8 fscod, frmsizcod, bsid, bsmod, acmod, lfe_on;
GST_DEBUG_OBJECT (qtpad->collect.pad, "Found ac3 sync point at offset: %u",
off);
gst_bit_reader_init (&bits, map.data, map.size);
/* off + sync + crc */
gst_bit_reader_skip_unchecked (&bits, off * 8 + 16 + 16);
fscod = gst_bit_reader_get_bits_uint8_unchecked (&bits, 2);
frmsizcod = gst_bit_reader_get_bits_uint8_unchecked (&bits, 6);
bsid = gst_bit_reader_get_bits_uint8_unchecked (&bits, 5);
bsmod = gst_bit_reader_get_bits_uint8_unchecked (&bits, 3);
acmod = gst_bit_reader_get_bits_uint8_unchecked (&bits, 3);
if ((acmod & 0x1) && (acmod != 0x1)) /* 3 front channels */
gst_bit_reader_skip_unchecked (&bits, 2);
if ((acmod & 0x4)) /* if a surround channel exists */
gst_bit_reader_skip_unchecked (&bits, 2);
if (acmod == 0x2) /* if in 2/0 mode */
gst_bit_reader_skip_unchecked (&bits, 2);
lfe_on = gst_bit_reader_get_bits_uint8_unchecked (&bits, 1);
gst_qt_mux_pad_add_ac3_extension (qtmux, qtpad, fscod, frmsizcod, bsid,
bsmod, acmod, lfe_on);
/* AC-3 spec says that those values should be constant for the
* whole stream when muxed in mp4. We trust the input follows it */
GST_DEBUG_OBJECT (qtpad->collect.pad, "Data parsed, removing "
"prepare buffer function");
qtpad->prepare_buf_func = NULL;
}
done:
gst_buffer_unmap (buf, &map);
return buf;
}
static GstBuffer *
gst_qt_mux_create_empty_tx3g_buffer (GstQTPad * qtpad, gint64 duration)
{
guint8 *data;
data = g_malloc (2);
GST_WRITE_UINT16_BE (data, 0);
return gst_buffer_new_wrapped (data, 2);
}
static void
gst_qt_mux_add_mp4_tag (GstQTMux * qtmux, const GstTagList * list,
AtomUDTA * udta, const char *tag, const char *tag2, guint32 fourcc)
{
switch (gst_tag_get_type (tag)) {
/* strings */
case G_TYPE_STRING:
{
gchar *str = NULL;
if (!gst_tag_list_get_string (list, tag, &str) || !str)
break;
GST_DEBUG_OBJECT (qtmux, "Adding tag %" GST_FOURCC_FORMAT " -> %s",
GST_FOURCC_ARGS (fourcc), str);
atom_udta_add_str_tag (udta, fourcc, str);
g_free (str);
break;
}
/* double */
case G_TYPE_DOUBLE:
{
gdouble value;
if (!gst_tag_list_get_double (list, tag, &value))
break;
GST_DEBUG_OBJECT (qtmux, "Adding tag %" GST_FOURCC_FORMAT " -> %u",
GST_FOURCC_ARGS (fourcc), (gint) value);
atom_udta_add_uint_tag (udta, fourcc, 21, (gint) value);
break;
}
case G_TYPE_UINT:
{
guint value = 0;
if (tag2) {
/* paired unsigned integers */
guint count = 0;
gboolean got_tag;
got_tag = gst_tag_list_get_uint (list, tag, &value);
got_tag = gst_tag_list_get_uint (list, tag2, &count) || got_tag;
if (!got_tag)
break;
GST_DEBUG_OBJECT (qtmux, "Adding tag %" GST_FOURCC_FORMAT " -> %u/%u",
GST_FOURCC_ARGS (fourcc), value, count);
atom_udta_add_uint_tag (udta, fourcc, 0,
value << 16 | (count & 0xFFFF));
} else {
/* unpaired unsigned integers */
if (!gst_tag_list_get_uint (list, tag, &value))
break;
GST_DEBUG_OBJECT (qtmux, "Adding tag %" GST_FOURCC_FORMAT " -> %u",
GST_FOURCC_ARGS (fourcc), value);
atom_udta_add_uint_tag (udta, fourcc, 1, value);
}
break;
}
default:
g_assert_not_reached ();
break;
}
}
static void
gst_qt_mux_add_mp4_date (GstQTMux * qtmux, const GstTagList * list,
AtomUDTA * udta, const char *tag, const char *tag2, guint32 fourcc)
{
GDate *date = NULL;
GDateYear year;
GDateMonth month;
GDateDay day;
gchar *str;
g_return_if_fail (gst_tag_get_type (tag) == G_TYPE_DATE);
if (!gst_tag_list_get_date (list, tag, &date) || !date)
return;
year = g_date_get_year (date);
month = g_date_get_month (date);
day = g_date_get_day (date);
g_date_free (date);
if (year == G_DATE_BAD_YEAR && month == G_DATE_BAD_MONTH &&
day == G_DATE_BAD_DAY) {
GST_WARNING_OBJECT (qtmux, "invalid date in tag");
return;
}
str = g_strdup_printf ("%u-%u-%u", year, month, day);
GST_DEBUG_OBJECT (qtmux, "Adding tag %" GST_FOURCC_FORMAT " -> %s",
GST_FOURCC_ARGS (fourcc), str);
atom_udta_add_str_tag (udta, fourcc, str);
g_free (str);
}
static void
gst_qt_mux_add_mp4_cover (GstQTMux * qtmux, const GstTagList * list,
AtomUDTA * udta, const char *tag, const char *tag2, guint32 fourcc)
{
GValue value = { 0, };
GstBuffer *buf;
GstSample *sample;
GstCaps *caps;
GstStructure *structure;
gint flags = 0;
GstMapInfo map;
g_return_if_fail (gst_tag_get_type (tag) == GST_TYPE_SAMPLE);
if (!gst_tag_list_copy_value (&value, list, tag))
return;
sample = gst_value_get_sample (&value);
if (!sample)
goto done;
buf = gst_sample_get_buffer (sample);
if (!buf)
goto done;
caps = gst_sample_get_caps (sample);
if (!caps) {
GST_WARNING_OBJECT (qtmux, "preview image without caps");
goto done;
}
GST_DEBUG_OBJECT (qtmux, "preview image caps %" GST_PTR_FORMAT, caps);
structure = gst_caps_get_structure (caps, 0);
if (gst_structure_has_name (structure, "image/jpeg"))
flags = 13;
else if (gst_structure_has_name (structure, "image/png"))
flags = 14;
if (!flags) {
GST_WARNING_OBJECT (qtmux, "preview image format not supported");
goto done;
}
gst_buffer_map (buf, &map, GST_MAP_READ);
GST_DEBUG_OBJECT (qtmux, "Adding tag %" GST_FOURCC_FORMAT
" -> image size %" G_GSIZE_FORMAT "", GST_FOURCC_ARGS (fourcc), map.size);
atom_udta_add_tag (udta, fourcc, flags, map.data, map.size);
gst_buffer_unmap (buf, &map);
done:
g_value_unset (&value);
}
static void
gst_qt_mux_add_3gp_str (GstQTMux * qtmux, const GstTagList * list,
AtomUDTA * udta, const char *tag, const char *tag2, guint32 fourcc)
{
gchar *str = NULL;
guint number;
g_return_if_fail (gst_tag_get_type (tag) == G_TYPE_STRING);
g_return_if_fail (!tag2 || gst_tag_get_type (tag2) == G_TYPE_UINT);
if (!gst_tag_list_get_string (list, tag, &str) || !str)
return;
if (tag2)
if (!gst_tag_list_get_uint (list, tag2, &number))
tag2 = NULL;
if (!tag2) {
GST_DEBUG_OBJECT (qtmux, "Adding tag %" GST_FOURCC_FORMAT " -> %s",
GST_FOURCC_ARGS (fourcc), str);
atom_udta_add_3gp_str_tag (udta, fourcc, str);
} else {
GST_DEBUG_OBJECT (qtmux, "Adding tag %" GST_FOURCC_FORMAT " -> %s/%d",
GST_FOURCC_ARGS (fourcc), str, number);
atom_udta_add_3gp_str_int_tag (udta, fourcc, str, number);
}
g_free (str);
}
static void
gst_qt_mux_add_3gp_date (GstQTMux * qtmux, const GstTagList * list,
AtomUDTA * udta, const char *tag, const char *tag2, guint32 fourcc)
{
GDate *date = NULL;
GDateYear year;
g_return_if_fail (gst_tag_get_type (tag) == G_TYPE_DATE);
if (!gst_tag_list_get_date (list, tag, &date) || !date)
return;
year = g_date_get_year (date);
g_date_free (date);
if (year == G_DATE_BAD_YEAR) {
GST_WARNING_OBJECT (qtmux, "invalid date in tag");
return;
}
GST_DEBUG_OBJECT (qtmux, "Adding tag %" GST_FOURCC_FORMAT " -> %d",
GST_FOURCC_ARGS (fourcc), year);
atom_udta_add_3gp_uint_tag (udta, fourcc, year);
}
static void
gst_qt_mux_add_3gp_location (GstQTMux * qtmux, const GstTagList * list,
AtomUDTA * udta, const char *tag, const char *tag2, guint32 fourcc)
{
gdouble latitude = -360, longitude = -360, altitude = 0;
gchar *location = NULL;
guint8 *data, *ddata;
gint size = 0, len = 0;
gboolean ret = FALSE;
g_return_if_fail (strcmp (tag, GST_TAG_GEO_LOCATION_NAME) == 0);
ret = gst_tag_list_get_string (list, tag, &location);
ret |= gst_tag_list_get_double (list, GST_TAG_GEO_LOCATION_LONGITUDE,
&longitude);
ret |= gst_tag_list_get_double (list, GST_TAG_GEO_LOCATION_LATITUDE,
&latitude);
ret |= gst_tag_list_get_double (list, GST_TAG_GEO_LOCATION_ELEVATION,
&altitude);
if (!ret)
return;
if (location)
len = strlen (location);
size += len + 1 + 2;
/* role + (long, lat, alt) + body + notes */
size += 1 + 3 * 4 + 1 + 1;
data = ddata = g_malloc (size);
/* language tag */
GST_WRITE_UINT16_BE (data, language_code (GST_QT_MUX_DEFAULT_TAG_LANGUAGE));
/* location */
if (location)
memcpy (data + 2, location, len);
GST_WRITE_UINT8 (data + 2 + len, 0);
data += len + 1 + 2;
/* role */
GST_WRITE_UINT8 (data, 0);
/* long, lat, alt */
#define QT_WRITE_SFP32(data, fp) GST_WRITE_UINT32_BE(data, (guint32) ((gint) (fp * 65536.0)))
QT_WRITE_SFP32 (data + 1, longitude);
QT_WRITE_SFP32 (data + 5, latitude);
QT_WRITE_SFP32 (data + 9, altitude);
/* neither astronomical body nor notes */
GST_WRITE_UINT16_BE (data + 13, 0);
GST_DEBUG_OBJECT (qtmux, "Adding tag 'loci'");
atom_udta_add_3gp_tag (udta, fourcc, ddata, size);
g_free (ddata);
}
static void
gst_qt_mux_add_3gp_keywords (GstQTMux * qtmux, const GstTagList * list,
AtomUDTA * udta, const char *tag, const char *tag2, guint32 fourcc)
{
gchar *keywords = NULL;
guint8 *data, *ddata;
gint size = 0, i;
gchar **kwds;
g_return_if_fail (strcmp (tag, GST_TAG_KEYWORDS) == 0);
if (!gst_tag_list_get_string (list, tag, &keywords) || !keywords)
return;
kwds = g_strsplit (keywords, ",", 0);
g_free (keywords);
size = 0;
for (i = 0; kwds[i]; i++) {
/* size byte + null-terminator */
size += strlen (kwds[i]) + 1 + 1;
}
/* language tag + count + keywords */
size += 2 + 1;
data = ddata = g_malloc (size);
/* language tag */
GST_WRITE_UINT16_BE (data, language_code (GST_QT_MUX_DEFAULT_TAG_LANGUAGE));
/* count */
GST_WRITE_UINT8 (data + 2, i);
data += 3;
/* keywords */
for (i = 0; kwds[i]; ++i) {
gint len = strlen (kwds[i]);
GST_DEBUG_OBJECT (qtmux, "Adding tag %" GST_FOURCC_FORMAT " -> %s",
GST_FOURCC_ARGS (fourcc), kwds[i]);
/* size */
GST_WRITE_UINT8 (data, len + 1);
memcpy (data + 1, kwds[i], len + 1);
data += len + 2;
}
g_strfreev (kwds);
atom_udta_add_3gp_tag (udta, fourcc, ddata, size);
g_free (ddata);
}
static gboolean
gst_qt_mux_parse_classification_string (GstQTMux * qtmux, const gchar * input,
guint32 * p_fourcc, guint16 * p_table, gchar ** p_content)
{
guint32 fourcc;
gint table;
gint size;
const gchar *data;
data = input;
size = strlen (input);
if (size < 4 + 3 + 1 + 1 + 1) {
/* at least the minimum xxxx://y/z */
GST_WARNING_OBJECT (qtmux, "Classification tag input (%s) too short, "
"ignoring", input);
return FALSE;
}
/* read the fourcc */
memcpy (&fourcc, data, 4);
size -= 4;
data += 4;
if (strncmp (data, "://", 3) != 0) {
goto mismatch;
}
data += 3;
size -= 3;
/* read the table number */
if (sscanf (data, "%d", &table) != 1) {
goto mismatch;
}
if (table < 0) {
GST_WARNING_OBJECT (qtmux, "Invalid table number in classification tag (%d)"
", table numbers should be positive, ignoring tag", table);
return FALSE;
}
/* find the next / */
while (size > 0 && data[0] != '/') {
data += 1;
size -= 1;
}
if (size == 0) {
goto mismatch;
}
g_assert (data[0] == '/');
/* skip the '/' */
data += 1;
size -= 1;
if (size == 0) {
goto mismatch;
}
/* read up the rest of the string */
*p_content = g_strdup (data);
*p_table = (guint16) table;
*p_fourcc = fourcc;
return TRUE;
mismatch:
{
GST_WARNING_OBJECT (qtmux, "Ignoring classification tag as "
"input (%s) didn't match the expected entitycode://table/content",
input);
return FALSE;
}
}
static void
gst_qt_mux_add_3gp_classification (GstQTMux * qtmux, const GstTagList * list,
AtomUDTA * udta, const char *tag, const char *tag2, guint32 fourcc)
{
gchar *clsf_data = NULL;
gint size = 0;
guint32 entity = 0;
guint16 table = 0;
gchar *content = NULL;
guint8 *data;
g_return_if_fail (strcmp (tag, GST_TAG_3GP_CLASSIFICATION) == 0);
if (!gst_tag_list_get_string (list, tag, &clsf_data) || !clsf_data)
return;
GST_DEBUG_OBJECT (qtmux, "Adding tag %" GST_FOURCC_FORMAT " -> %s",
GST_FOURCC_ARGS (fourcc), clsf_data);
/* parse the string, format is:
* entityfourcc://table/content
*/
gst_qt_mux_parse_classification_string (qtmux, clsf_data, &entity, &table,
&content);
g_free (clsf_data);
/* +1 for the \0 */
size = strlen (content) + 1;
/* now we have everything, build the atom
* atom description is at 3GPP TS 26.244 V8.2.0 (2009-09) */
data = g_malloc (4 + 2 + 2 + size);
GST_WRITE_UINT32_LE (data, entity);
GST_WRITE_UINT16_BE (data + 4, (guint16) table);
GST_WRITE_UINT16_BE (data + 6, 0);
memcpy (data + 8, content, size);
g_free (content);
atom_udta_add_3gp_tag (udta, fourcc, data, 4 + 2 + 2 + size);
g_free (data);
}
typedef void (*GstQTMuxAddUdtaTagFunc) (GstQTMux * mux,
const GstTagList * list, AtomUDTA * udta, const char *tag,
const char *tag2, guint32 fourcc);
/*
* Struct to record mappings from gstreamer tags to fourcc codes
*/
typedef struct _GstTagToFourcc
{
guint32 fourcc;
const gchar *gsttag;
const gchar *gsttag2;
const GstQTMuxAddUdtaTagFunc func;
} GstTagToFourcc;
/* tag list tags to fourcc matching */
static const GstTagToFourcc tag_matches_mp4[] = {
{FOURCC__alb, GST_TAG_ALBUM, NULL, gst_qt_mux_add_mp4_tag},
{FOURCC_soal, GST_TAG_ALBUM_SORTNAME, NULL, gst_qt_mux_add_mp4_tag},
{FOURCC__ART, GST_TAG_ARTIST, NULL, gst_qt_mux_add_mp4_tag},
{FOURCC_soar, GST_TAG_ARTIST_SORTNAME, NULL, gst_qt_mux_add_mp4_tag},
{FOURCC_aART, GST_TAG_ALBUM_ARTIST, NULL, gst_qt_mux_add_mp4_tag},
{FOURCC_soaa, GST_TAG_ALBUM_ARTIST_SORTNAME, NULL, gst_qt_mux_add_mp4_tag},
{FOURCC__swr, GST_TAG_APPLICATION_NAME, NULL, gst_qt_mux_add_mp4_tag},
{FOURCC__cmt, GST_TAG_COMMENT, NULL, gst_qt_mux_add_mp4_tag},
{FOURCC__wrt, GST_TAG_COMPOSER, NULL, gst_qt_mux_add_mp4_tag},
{FOURCC_soco, GST_TAG_COMPOSER_SORTNAME, NULL, gst_qt_mux_add_mp4_tag},
{FOURCC_tvsh, GST_TAG_SHOW_NAME, NULL, gst_qt_mux_add_mp4_tag},
{FOURCC_sosn, GST_TAG_SHOW_SORTNAME, NULL, gst_qt_mux_add_mp4_tag},
{FOURCC_tvsn, GST_TAG_SHOW_SEASON_NUMBER, NULL, gst_qt_mux_add_mp4_tag},
{FOURCC_tves, GST_TAG_SHOW_EPISODE_NUMBER, NULL, gst_qt_mux_add_mp4_tag},
{FOURCC__gen, GST_TAG_GENRE, NULL, gst_qt_mux_add_mp4_tag},
{FOURCC__nam, GST_TAG_TITLE, NULL, gst_qt_mux_add_mp4_tag},
{FOURCC_sonm, GST_TAG_TITLE_SORTNAME, NULL, gst_qt_mux_add_mp4_tag},
{FOURCC_perf, GST_TAG_PERFORMER, NULL, gst_qt_mux_add_mp4_tag},
{FOURCC__grp, GST_TAG_GROUPING, NULL, gst_qt_mux_add_mp4_tag},
{FOURCC__des, GST_TAG_DESCRIPTION, NULL, gst_qt_mux_add_mp4_tag},
{FOURCC__lyr, GST_TAG_LYRICS, NULL, gst_qt_mux_add_mp4_tag},
{FOURCC__too, GST_TAG_ENCODER, NULL, gst_qt_mux_add_mp4_tag},
{FOURCC_cprt, GST_TAG_COPYRIGHT, NULL, gst_qt_mux_add_mp4_tag},
{FOURCC_keyw, GST_TAG_KEYWORDS, NULL, gst_qt_mux_add_mp4_tag},
{FOURCC__day, GST_TAG_DATE, NULL, gst_qt_mux_add_mp4_date},
{FOURCC_tmpo, GST_TAG_BEATS_PER_MINUTE, NULL, gst_qt_mux_add_mp4_tag},
{FOURCC_trkn, GST_TAG_TRACK_NUMBER, GST_TAG_TRACK_COUNT,
gst_qt_mux_add_mp4_tag},
{FOURCC_disk, GST_TAG_ALBUM_VOLUME_NUMBER, GST_TAG_ALBUM_VOLUME_COUNT,
gst_qt_mux_add_mp4_tag},
{FOURCC_covr, GST_TAG_PREVIEW_IMAGE, NULL, gst_qt_mux_add_mp4_cover},
{FOURCC_covr, GST_TAG_IMAGE, NULL, gst_qt_mux_add_mp4_cover},
{0, NULL,}
};
static const GstTagToFourcc tag_matches_3gp[] = {
{FOURCC_titl, GST_TAG_TITLE, NULL, gst_qt_mux_add_3gp_str},
{FOURCC_dscp, GST_TAG_DESCRIPTION, NULL, gst_qt_mux_add_3gp_str},
{FOURCC_cprt, GST_TAG_COPYRIGHT, NULL, gst_qt_mux_add_3gp_str},
{FOURCC_perf, GST_TAG_ARTIST, NULL, gst_qt_mux_add_3gp_str},
{FOURCC_auth, GST_TAG_COMPOSER, NULL, gst_qt_mux_add_3gp_str},
{FOURCC_gnre, GST_TAG_GENRE, NULL, gst_qt_mux_add_3gp_str},
{FOURCC_kywd, GST_TAG_KEYWORDS, NULL, gst_qt_mux_add_3gp_keywords},
{FOURCC_yrrc, GST_TAG_DATE, NULL, gst_qt_mux_add_3gp_date},
{FOURCC_albm, GST_TAG_ALBUM, GST_TAG_TRACK_NUMBER, gst_qt_mux_add_3gp_str},
{FOURCC_loci, GST_TAG_GEO_LOCATION_NAME, NULL, gst_qt_mux_add_3gp_location},
{FOURCC_clsf, GST_TAG_3GP_CLASSIFICATION, NULL,
gst_qt_mux_add_3gp_classification},
{0, NULL,}
};
/* qtdemux produces these for atoms it cannot parse */
#define GST_QT_DEMUX_PRIVATE_TAG "private-qt-tag"
static void
gst_qt_mux_add_xmp_tags (GstQTMux * qtmux, const GstTagList * list)
{
GstQTMuxClass *qtmux_klass = (GstQTMuxClass *) (G_OBJECT_GET_CLASS (qtmux));
GstBuffer *xmp = NULL;
/* adobe specs only have 'quicktime' and 'mp4',
* but I guess we can extrapolate to gpp.
* Keep mj2 out for now as we don't add any tags for it yet.
* If you have further info about xmp on these formats, please share */
if (qtmux_klass->format == GST_QT_MUX_FORMAT_MJ2)
return;
GST_DEBUG_OBJECT (qtmux, "Adding xmp tags");
if (qtmux_klass->format == GST_QT_MUX_FORMAT_QT) {
xmp = gst_tag_xmp_writer_tag_list_to_xmp_buffer (GST_TAG_XMP_WRITER (qtmux),
list, TRUE);
if (xmp)
atom_udta_add_xmp_tags (&qtmux->moov->udta, xmp);
} else {
AtomInfo *ainfo;
/* for isom/mp4, it is a top level uuid atom */
xmp = gst_tag_xmp_writer_tag_list_to_xmp_buffer (GST_TAG_XMP_WRITER (qtmux),
list, TRUE);
if (xmp) {
ainfo = build_uuid_xmp_atom (xmp);
if (ainfo) {
qtmux->extra_atoms = g_slist_prepend (qtmux->extra_atoms, ainfo);
}
}
}
if (xmp)
gst_buffer_unref (xmp);
}
static void
gst_qt_mux_add_metadata_tags (GstQTMux * qtmux, const GstTagList * list,
AtomUDTA * udta)
{
GstQTMuxClass *qtmux_klass = (GstQTMuxClass *) (G_OBJECT_GET_CLASS (qtmux));
guint32 fourcc;
gint i;
const gchar *tag, *tag2;
const GstTagToFourcc *tag_matches;
switch (qtmux_klass->format) {
case GST_QT_MUX_FORMAT_3GP:
tag_matches = tag_matches_3gp;
break;
case GST_QT_MUX_FORMAT_MJ2:
tag_matches = NULL;
break;
default:
/* sort of iTunes style for mp4 and QT (?) */
tag_matches = tag_matches_mp4;
break;
}
if (!tag_matches)
return;
/* Clear existing tags so we don't add them over and over */
atom_udta_clear_tags (udta);
for (i = 0; tag_matches[i].fourcc; i++) {
fourcc = tag_matches[i].fourcc;
tag = tag_matches[i].gsttag;
tag2 = tag_matches[i].gsttag2;
g_assert (tag_matches[i].func);
tag_matches[i].func (qtmux, list, udta, tag, tag2, fourcc);
}
/* add unparsed blobs if present */
if (gst_tag_exists (GST_QT_DEMUX_PRIVATE_TAG)) {
guint num_tags;
num_tags = gst_tag_list_get_tag_size (list, GST_QT_DEMUX_PRIVATE_TAG);
for (i = 0; i < num_tags; ++i) {
GstSample *sample = NULL;
GstBuffer *buf;
const GstStructure *s;
if (!gst_tag_list_get_sample_index (list, GST_QT_DEMUX_PRIVATE_TAG, i,
&sample))
continue;
buf = gst_sample_get_buffer (sample);
if (buf && (s = gst_sample_get_info (sample))) {
const gchar *style = NULL;
GstMapInfo map;
gst_buffer_map (buf, &map, GST_MAP_READ);
GST_DEBUG_OBJECT (qtmux,
"Found private tag %d/%d; size %" G_GSIZE_FORMAT ", info %"
GST_PTR_FORMAT, i, num_tags, map.size, s);
if (s && (style = gst_structure_get_string (s, "style"))) {
/* try to prevent some style tag ending up into another variant
* (todo: make into a list if more cases) */
if ((strcmp (style, "itunes") == 0 &&
qtmux_klass->format == GST_QT_MUX_FORMAT_MP4) ||
(strcmp (style, "iso") == 0 &&
qtmux_klass->format == GST_QT_MUX_FORMAT_3GP)) {
GST_DEBUG_OBJECT (qtmux, "Adding private tag");
atom_udta_add_blob_tag (udta, map.data, map.size);
}
}
gst_buffer_unmap (buf, &map);
}
gst_sample_unref (sample);
}
}
return;
}
/*
* Gets the tagsetter iface taglist and puts the known tags
* into the output stream
*/
static void
gst_qt_mux_setup_metadata (GstQTMux * qtmux)
{
const GstTagList *tags = NULL;
GSList *walk;
GST_OBJECT_LOCK (qtmux);
if (qtmux->tags_changed) {
tags = gst_tag_setter_get_tag_list (GST_TAG_SETTER (qtmux));
qtmux->tags_changed = FALSE;
}
GST_OBJECT_UNLOCK (qtmux);
GST_LOG_OBJECT (qtmux, "tags: %" GST_PTR_FORMAT, tags);
if (tags && !gst_tag_list_is_empty (tags)) {
GstTagList *copy = gst_tag_list_copy (tags);
GST_DEBUG_OBJECT (qtmux, "Removing bogus tags");
gst_tag_list_remove_tag (copy, GST_TAG_VIDEO_CODEC);
gst_tag_list_remove_tag (copy, GST_TAG_AUDIO_CODEC);
gst_tag_list_remove_tag (copy, GST_TAG_CONTAINER_FORMAT);
GST_DEBUG_OBJECT (qtmux, "Formatting tags");
gst_qt_mux_add_metadata_tags (qtmux, copy, &qtmux->moov->udta);
gst_qt_mux_add_xmp_tags (qtmux, copy);
gst_tag_list_unref (copy);
} else {
GST_DEBUG_OBJECT (qtmux, "No new tags received");
}
for (walk = qtmux->sinkpads; walk; walk = g_slist_next (walk)) {
GstCollectData *cdata = (GstCollectData *) walk->data;
GstQTPad *qpad = (GstQTPad *) cdata;
GstPad *pad = qpad->collect.pad;
if (qpad->tags_changed && qpad->tags) {
GST_DEBUG_OBJECT (pad, "Adding tags");
gst_tag_list_remove_tag (qpad->tags, GST_TAG_CONTAINER_FORMAT);
gst_qt_mux_add_metadata_tags (qtmux, qpad->tags, &qpad->trak->udta);
qpad->tags_changed = FALSE;
GST_DEBUG_OBJECT (pad, "Tags added");
} else {
GST_DEBUG_OBJECT (pad, "No new tags received");
}
}
}
static inline GstBuffer *
_gst_buffer_new_take_data (guint8 * data, guint size)
{
GstBuffer *buf;
buf = gst_buffer_new ();
gst_buffer_append_memory (buf,
gst_memory_new_wrapped (0, data, size, 0, size, data, g_free));
return buf;
}
static GstFlowReturn
gst_qt_mux_send_buffer (GstQTMux * qtmux, GstBuffer * buf, guint64 * offset,
gboolean mind_fast)
{
GstFlowReturn res;
gsize size;
g_return_val_if_fail (buf != NULL, GST_FLOW_ERROR);
size = gst_buffer_get_size (buf);
GST_LOG_OBJECT (qtmux, "sending buffer size %" G_GSIZE_FORMAT, size);
if (mind_fast && qtmux->fast_start_file) {
GstMapInfo map;
gint ret;
GST_LOG_OBJECT (qtmux, "to temporary file");
gst_buffer_map (buf, &map, GST_MAP_READ);
ret = fwrite (map.data, sizeof (guint8), map.size, qtmux->fast_start_file);
gst_buffer_unmap (buf, &map);
gst_buffer_unref (buf);
if (ret != size)
goto write_error;
else
res = GST_FLOW_OK;
} else {
GST_LOG_OBJECT (qtmux, "downstream");
res = gst_pad_push (qtmux->srcpad, buf);
}
if (G_LIKELY (offset))
*offset += size;
return res;
/* ERRORS */
write_error:
{
GST_ELEMENT_ERROR (qtmux, RESOURCE, WRITE,
("Failed to write to temporary file"), GST_ERROR_SYSTEM);
return GST_FLOW_ERROR;
}
}
static gboolean
gst_qt_mux_seek_to_beginning (FILE * f)
{
#ifdef HAVE_FSEEKO
if (fseeko (f, (off_t) 0, SEEK_SET) != 0)
return FALSE;
#elif defined (G_OS_UNIX) || defined (G_OS_WIN32)
if (lseek (fileno (f), (off_t) 0, SEEK_SET) == (off_t) - 1)
return FALSE;
#else
if (fseek (f, (long) 0, SEEK_SET) != 0)
return FALSE;
#endif
return TRUE;
}
static GstFlowReturn
gst_qt_mux_send_buffered_data (GstQTMux * qtmux, guint64 * offset)
{
GstFlowReturn ret = GST_FLOW_OK;
GstBuffer *buf = NULL;
if (fflush (qtmux->fast_start_file))
goto flush_failed;
if (!gst_qt_mux_seek_to_beginning (qtmux->fast_start_file))
goto seek_failed;
/* hm, this could all take a really really long time,
* but there may not be another way to get moov atom first
* (somehow optimize copy?) */
GST_DEBUG_OBJECT (qtmux, "Sending buffered data");
while (ret == GST_FLOW_OK) {
const int bufsize = 4096;
GstMapInfo map;
gsize size;
buf = gst_buffer_new_and_alloc (bufsize);
gst_buffer_map (buf, &map, GST_MAP_WRITE);
size = fread (map.data, sizeof (guint8), bufsize, qtmux->fast_start_file);
if (size == 0) {
gst_buffer_unmap (buf, &map);
break;
}
GST_LOG_OBJECT (qtmux, "Pushing buffered buffer of size %d", (gint) size);
gst_buffer_unmap (buf, &map);
if (size != bufsize)
gst_buffer_set_size (buf, size);
ret = gst_qt_mux_send_buffer (qtmux, buf, offset, FALSE);
buf = NULL;
}
if (buf)
gst_buffer_unref (buf);
if (ftruncate (fileno (qtmux->fast_start_file), 0))
goto seek_failed;
if (!gst_qt_mux_seek_to_beginning (qtmux->fast_start_file))
goto seek_failed;
return ret;
/* ERRORS */
flush_failed:
{
GST_ELEMENT_ERROR (qtmux, RESOURCE, WRITE,
("Failed to flush temporary file"), GST_ERROR_SYSTEM);
ret = GST_FLOW_ERROR;
goto fail;
}
seek_failed:
{
GST_ELEMENT_ERROR (qtmux, RESOURCE, SEEK,
("Failed to seek temporary file"), GST_ERROR_SYSTEM);
ret = GST_FLOW_ERROR;
goto fail;
}
fail:
{
/* clear descriptor so we don't remove temp file later on,
* might be possible to recover */
fclose (qtmux->fast_start_file);
qtmux->fast_start_file = NULL;
return ret;
}
}
/*
* Sends the initial mdat atom fields (size fields and fourcc type),
* the subsequent buffers are considered part of it's data.
* As we can't predict the amount of data that we are going to place in mdat
* we need to record the position of the size field in the stream so we can
* seek back to it later and update when the streams have finished.
*/
static GstFlowReturn
gst_qt_mux_send_mdat_header (GstQTMux * qtmux, guint64 * off, guint64 size,
gboolean extended, gboolean fsync_after)
{
GstBuffer *buf;
GstMapInfo map;
GST_DEBUG_OBJECT (qtmux, "Sending mdat's atom header, "
"size %" G_GUINT64_FORMAT, size);
/* if the qtmux state is EOS, really write the mdat, otherwise
* allow size == 0 for a placeholder atom */
if (qtmux->state == GST_QT_MUX_STATE_EOS || size > 0)
size += 8;
if (extended) {
gboolean large_file = (size > MDAT_LARGE_FILE_LIMIT);
/* Always write 16-bytes, but put a free atom first
* if the size is < 4GB. */
buf = gst_buffer_new_and_alloc (16);
gst_buffer_map (buf, &map, GST_MAP_WRITE);
if (large_file) {
/* Write extended mdat header and large_size field */
GST_WRITE_UINT32_BE (map.data, 1);
GST_WRITE_UINT32_LE (map.data + 4, FOURCC_mdat);
GST_WRITE_UINT64_BE (map.data + 8, size + 8);
} else {
/* Write an empty free atom, then standard 32-bit mdat */
GST_WRITE_UINT32_BE (map.data, 8);
GST_WRITE_UINT32_LE (map.data + 4, FOURCC_free);
GST_WRITE_UINT32_BE (map.data + 8, size);
GST_WRITE_UINT32_LE (map.data + 12, FOURCC_mdat);
}
gst_buffer_unmap (buf, &map);
} else {
buf = gst_buffer_new_and_alloc (8);
gst_buffer_map (buf, &map, GST_MAP_WRITE);
/* Vanilla 32-bit mdat */
GST_WRITE_UINT32_BE (map.data, size);
GST_WRITE_UINT32_LE (map.data + 4, FOURCC_mdat);
gst_buffer_unmap (buf, &map);
}
GST_LOG_OBJECT (qtmux, "Pushing mdat header");
if (fsync_after)
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_SYNC_AFTER);
return gst_qt_mux_send_buffer (qtmux, buf, off, FALSE);
}
/*
* We get the position of the mdat size field, seek back to it
* and overwrite with the real value
*/
static GstFlowReturn
gst_qt_mux_update_mdat_size (GstQTMux * qtmux, guint64 mdat_pos,
guint64 mdat_size, guint64 * offset, gboolean fsync_after)
{
GstSegment segment;
/* We must have recorded the mdat position for this to work */
g_assert (mdat_pos != 0);
/* seek and rewrite the header */
gst_segment_init (&segment, GST_FORMAT_BYTES);
segment.start = mdat_pos;
gst_pad_push_event (qtmux->srcpad, gst_event_new_segment (&segment));
return gst_qt_mux_send_mdat_header (qtmux, offset, mdat_size, TRUE,
fsync_after);
}
static GstFlowReturn
gst_qt_mux_send_ftyp (GstQTMux * qtmux, guint64 * off)
{
GstBuffer *buf;
guint64 size = 0, offset = 0;
guint8 *data = NULL;
GST_DEBUG_OBJECT (qtmux, "Sending ftyp atom");
if (!atom_ftyp_copy_data (qtmux->ftyp, &data, &size, &offset))
goto serialize_error;
buf = _gst_buffer_new_take_data (data, offset);
GST_LOG_OBJECT (qtmux, "Pushing ftyp");
return gst_qt_mux_send_buffer (qtmux, buf, off, FALSE);
/* ERRORS */
serialize_error:
{
GST_ELEMENT_ERROR (qtmux, STREAM, MUX, (NULL),
("Failed to serialize ftyp"));
return GST_FLOW_ERROR;
}
}
static void
gst_qt_mux_prepare_ftyp (GstQTMux * qtmux, AtomFTYP ** p_ftyp,
GstBuffer ** p_prefix)
{
GstQTMuxClass *qtmux_klass = (GstQTMuxClass *) (G_OBJECT_GET_CLASS (qtmux));
guint32 major, version;
GList *comp;
GstBuffer *prefix = NULL;
AtomFTYP *ftyp = NULL;
GST_DEBUG_OBJECT (qtmux, "Preparing ftyp and possible prefix atom");
/* init and send context and ftyp based on current property state */
gst_qt_mux_map_format_to_header (qtmux_klass->format, &prefix, &major,
&version, &comp, qtmux->moov, qtmux->longest_chunk,
qtmux->fast_start_file != NULL);
ftyp = atom_ftyp_new (qtmux->context, major, version, comp);
if (comp)
g_list_free (comp);
if (prefix) {
if (p_prefix)
*p_prefix = prefix;
else
gst_buffer_unref (prefix);
}
*p_ftyp = ftyp;
}
static GstFlowReturn
gst_qt_mux_prepare_and_send_ftyp (GstQTMux * qtmux)
{
GstFlowReturn ret = GST_FLOW_OK;
GstBuffer *prefix = NULL;
GST_DEBUG_OBJECT (qtmux, "Preparing to send ftyp atom");
/* init and send context and ftyp based on current property state */
if (qtmux->ftyp) {
atom_ftyp_free (qtmux->ftyp);
qtmux->ftyp = NULL;
}
gst_qt_mux_prepare_ftyp (qtmux, &qtmux->ftyp, &prefix);
if (prefix) {
ret = gst_qt_mux_send_buffer (qtmux, prefix, &qtmux->header_size, FALSE);
if (ret != GST_FLOW_OK)
return ret;
}
return gst_qt_mux_send_ftyp (qtmux, &qtmux->header_size);
}
static void
gst_qt_mux_set_header_on_caps (GstQTMux * mux, GstBuffer * buf)
{
GstStructure *structure;
GValue array = { 0 };
GValue value = { 0 };
GstCaps *caps, *tcaps;
tcaps = gst_pad_get_current_caps (mux->srcpad);
caps = gst_caps_copy (tcaps);
gst_caps_unref (tcaps);
structure = gst_caps_get_structure (caps, 0);
g_value_init (&array, GST_TYPE_ARRAY);
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_HEADER);
g_value_init (&value, GST_TYPE_BUFFER);
gst_value_take_buffer (&value, gst_buffer_ref (buf));
gst_value_array_append_value (&array, &value);
g_value_unset (&value);
gst_structure_set_value (structure, "streamheader", &array);
g_value_unset (&array);
gst_pad_set_caps (mux->srcpad, caps);
gst_caps_unref (caps);
}
/*
* Write out a free space atom. The offset is adjusted by the full
* size, but a smaller buffer is sent
*/
static GstFlowReturn
gst_qt_mux_send_free_atom (GstQTMux * qtmux, guint64 * off, guint32 size,
gboolean fsync_after)
{
Atom *node_header;
GstBuffer *buf;
guint8 *data = NULL;
guint64 offset = 0, bsize = 0;
GstFlowReturn ret;
GST_DEBUG_OBJECT (qtmux, "Sending free atom header of size %u", size);
/* We can't make a free space atom smaller than the header */
if (size < 8)
goto too_small;
node_header = g_malloc0 (sizeof (Atom));
node_header->type = FOURCC_free;
node_header->size = size;
bsize = offset = 0;
if (atom_copy_data (node_header, &data, &bsize, &offset) == 0)
goto serialize_error;
buf = _gst_buffer_new_take_data (data, offset);
g_free (node_header);
if (fsync_after)
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_SYNC_AFTER);
GST_LOG_OBJECT (qtmux, "Pushing free atom");
ret = gst_qt_mux_send_buffer (qtmux, buf, off, FALSE);
if (off) {
GstSegment segment;
*off += size - 8;
/* Make sure downstream position ends up at the end of this free box */
gst_segment_init (&segment, GST_FORMAT_BYTES);
segment.start = *off;
gst_pad_push_event (qtmux->srcpad, gst_event_new_segment (&segment));
}
return ret;
/* ERRORS */
too_small:
{
GST_ELEMENT_ERROR (qtmux, STREAM, MUX, (NULL),
("Not enough free reserved space"));
return GST_FLOW_ERROR;
}
serialize_error:
{
GST_ELEMENT_ERROR (qtmux, STREAM, MUX, (NULL),
("Failed to serialize mdat"));
g_free (node_header);
return GST_FLOW_ERROR;
}
}
static void
gst_qt_mux_configure_moov (GstQTMux * qtmux)
{
gboolean fragmented = FALSE;
guint32 timescale;
GST_OBJECT_LOCK (qtmux);
timescale = qtmux->timescale;
if (qtmux->mux_mode == GST_QT_MUX_MODE_FRAGMENTED ||
qtmux->mux_mode == GST_QT_MUX_MODE_FRAGMENTED_STREAMABLE)
fragmented = TRUE;
GST_OBJECT_UNLOCK (qtmux);
/* inform lower layers of our property wishes, and determine duration.
* Let moov take care of this using its list of traks;
* so that released pads are also included */
GST_DEBUG_OBJECT (qtmux, "Updating timescale to %" G_GUINT32_FORMAT,
timescale);
atom_moov_update_timescale (qtmux->moov, timescale);
atom_moov_set_fragmented (qtmux->moov, fragmented);
atom_moov_update_duration (qtmux->moov);
}
static GstFlowReturn
gst_qt_mux_send_moov (GstQTMux * qtmux, guint64 * _offset,
guint64 padded_moov_size, gboolean mind_fast, gboolean fsync_after)
{
guint64 offset = 0, size = 0;
guint8 *data;
GstBuffer *buf;
GstFlowReturn ret = GST_FLOW_OK;
GSList *walk;
guint64 current_time = atoms_get_current_qt_time ();
/* update modification times */
qtmux->moov->mvhd.time_info.modification_time = current_time;
for (walk = qtmux->collect->data; walk; walk = g_slist_next (walk)) {
GstCollectData *cdata = (GstCollectData *) walk->data;
GstQTPad *qtpad = (GstQTPad *) cdata;
qtpad->trak->mdia.mdhd.time_info.modification_time = current_time;
qtpad->trak->tkhd.modification_time = current_time;
}
/* serialize moov */
offset = size = 0;
data = NULL;
GST_LOG_OBJECT (qtmux, "Copying movie header into buffer");
if (!atom_moov_copy_data (qtmux->moov, &data, &size, &offset))
goto serialize_error;
qtmux->last_moov_size = offset;
/* Check we have enough reserved space for this and a Free atom */
if (padded_moov_size > 0 && offset + 8 > padded_moov_size)
goto too_small_reserved;
buf = _gst_buffer_new_take_data (data, offset);
GST_DEBUG_OBJECT (qtmux, "Pushing moov atoms");
/* If at EOS, this is the final moov, put in the streamheader
* (apparently used by a flumotion util) */
if (qtmux->state == GST_QT_MUX_STATE_EOS)
gst_qt_mux_set_header_on_caps (qtmux, buf);
if (fsync_after)
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_SYNC_AFTER);
ret = gst_qt_mux_send_buffer (qtmux, buf, _offset, mind_fast);
/* Write out a free atom if needed */
if (ret == GST_FLOW_OK && offset < padded_moov_size) {
GST_LOG_OBJECT (qtmux, "Writing out free atom of size %u",
(guint32) (padded_moov_size - offset));
ret =
gst_qt_mux_send_free_atom (qtmux, _offset, padded_moov_size - offset,
fsync_after);
}
return ret;
too_small_reserved:
{
GST_ELEMENT_ERROR (qtmux, STREAM, MUX,
("Not enough free reserved header space"),
("Needed %" G_GUINT64_FORMAT " bytes, reserved %" G_GUINT64_FORMAT,
offset, padded_moov_size));
return GST_FLOW_ERROR;
}
serialize_error:
{
g_free (data);
return GST_FLOW_ERROR;
}
}
/* either calculates size of extra atoms or pushes them */
static GstFlowReturn
gst_qt_mux_send_extra_atoms (GstQTMux * qtmux, gboolean send, guint64 * offset,
gboolean mind_fast)
{
GSList *walk;
guint64 loffset = 0, size = 0;
guint8 *data;
GstFlowReturn ret = GST_FLOW_OK;
for (walk = qtmux->extra_atoms; walk; walk = g_slist_next (walk)) {
AtomInfo *ainfo = (AtomInfo *) walk->data;
loffset = size = 0;
data = NULL;
if (!ainfo->copy_data_func (ainfo->atom,
send ? &data : NULL, &size, &loffset))
goto serialize_error;
if (send) {
GstBuffer *buf;
GST_DEBUG_OBJECT (qtmux,
"Pushing extra top-level atom %" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (ainfo->atom->type));
buf = _gst_buffer_new_take_data (data, loffset);
ret = gst_qt_mux_send_buffer (qtmux, buf, offset, FALSE);
if (ret != GST_FLOW_OK)
break;
} else {
if (offset)
*offset += loffset;
}
}
return ret;
serialize_error:
{
g_free (data);
return GST_FLOW_ERROR;
}
}
static gboolean
gst_qt_mux_downstream_is_seekable (GstQTMux * qtmux)
{
gboolean seekable = FALSE;
GstQuery *query = gst_query_new_seeking (GST_FORMAT_BYTES);
if (gst_pad_peer_query (qtmux->srcpad, query)) {
gst_query_parse_seeking (query, NULL, &seekable, NULL, NULL);
GST_INFO_OBJECT (qtmux, "downstream is %sseekable", seekable ? "" : "not ");
} else {
/* have to assume seeking is not supported if query not handled downstream */
GST_WARNING_OBJECT (qtmux, "downstream did not handle seeking query");
seekable = FALSE;
}
gst_query_unref (query);
return seekable;
}
static void
gst_qt_mux_prepare_moov_recovery (GstQTMux * qtmux)
{
GSList *walk;
gboolean fail = FALSE;
AtomFTYP *ftyp = NULL;
GstBuffer *prefix = NULL;
GST_DEBUG_OBJECT (qtmux, "Opening moov recovery file: %s",
qtmux->moov_recov_file_path);
qtmux->moov_recov_file = g_fopen (qtmux->moov_recov_file_path, "wb+");
if (qtmux->moov_recov_file == NULL) {
GST_WARNING_OBJECT (qtmux, "Failed to open moov recovery file in %s",
qtmux->moov_recov_file_path);
return;
}
gst_qt_mux_prepare_ftyp (qtmux, &ftyp, &prefix);
if (!atoms_recov_write_headers (qtmux->moov_recov_file, ftyp, prefix,
qtmux->moov, qtmux->timescale, g_slist_length (qtmux->sinkpads))) {
GST_WARNING_OBJECT (qtmux, "Failed to write moov recovery file " "headers");
goto fail;
}
atom_ftyp_free (ftyp);
if (prefix)
gst_buffer_unref (prefix);
for (walk = qtmux->sinkpads; walk && !fail; walk = g_slist_next (walk)) {
GstCollectData *cdata = (GstCollectData *) walk->data;
GstQTPad *qpad = (GstQTPad *) cdata;
/* write info for each stream */
fail = atoms_recov_write_trak_info (qtmux->moov_recov_file, qpad->trak);
if (fail) {
GST_WARNING_OBJECT (qtmux, "Failed to write trak info to recovery "
"file");
break;
}
}
return;
fail:
/* cleanup */
fclose (qtmux->moov_recov_file);
qtmux->moov_recov_file = NULL;
}
static guint64
prefill_get_block_index (GstQTMux * qtmux, GstQTPad * qpad)
{
switch (qpad->fourcc) {
case FOURCC_apch:
case FOURCC_apcn:
case FOURCC_apcs:
case FOURCC_apco:
case FOURCC_ap4h:
case FOURCC_ap4x:
return qpad->sample_offset;
case FOURCC_sowt:
case FOURCC_twos:
return gst_util_uint64_scale_ceil (qpad->sample_offset,
qpad->expected_sample_duration_n,
qpad->expected_sample_duration_d *
atom_trak_get_timescale (qpad->trak));
default:
return -1;
}
}
static guint
prefill_get_sample_size (GstQTMux * qtmux, GstQTPad * qpad)
{
switch (qpad->fourcc) {
case FOURCC_apch:
if (((SampleTableEntryMP4V *) qpad->trak_ste)->height <= 480) {
return 300000;
} else if (((SampleTableEntryMP4V *) qpad->trak_ste)->height <= 576) {
return 350000;
} else if (((SampleTableEntryMP4V *) qpad->trak_ste)->height <= 720) {
return 525000;
} else if (((SampleTableEntryMP4V *) qpad->trak_ste)->height <= 1080) {
return 1050000;
} else {
return 4150000;
}
break;
case FOURCC_apcn:
if (((SampleTableEntryMP4V *) qpad->trak_ste)->height <= 480) {
return 200000;
} else if (((SampleTableEntryMP4V *) qpad->trak_ste)->height <= 576) {
return 250000;
} else if (((SampleTableEntryMP4V *) qpad->trak_ste)->height <= 720) {
return 350000;
} else if (((SampleTableEntryMP4V *) qpad->trak_ste)->height <= 1080) {
return 700000;
} else {
return 2800000;
}
break;
case FOURCC_apcs:
if (((SampleTableEntryMP4V *) qpad->trak_ste)->height <= 480) {
return 150000;
} else if (((SampleTableEntryMP4V *) qpad->trak_ste)->height <= 576) {
return 200000;
} else if (((SampleTableEntryMP4V *) qpad->trak_ste)->height <= 720) {
return 250000;
} else if (((SampleTableEntryMP4V *) qpad->trak_ste)->height <= 1080) {
return 500000;
} else {
return 2800000;
}
break;
case FOURCC_apco:
if (((SampleTableEntryMP4V *) qpad->trak_ste)->height <= 480) {
return 80000;
} else if (((SampleTableEntryMP4V *) qpad->trak_ste)->height <= 576) {
return 100000;
} else if (((SampleTableEntryMP4V *) qpad->trak_ste)->height <= 720) {
return 150000;
} else if (((SampleTableEntryMP4V *) qpad->trak_ste)->height <= 1080) {
return 250000;
} else {
return 900000;
}
break;
case FOURCC_sowt:
case FOURCC_twos:{
guint64 block_idx;
guint64 next_sample_offset;
block_idx = prefill_get_block_index (qtmux, qpad);
next_sample_offset =
gst_util_uint64_scale (block_idx + 1,
qpad->expected_sample_duration_d *
atom_trak_get_timescale (qpad->trak),
qpad->expected_sample_duration_n);
return (next_sample_offset - qpad->sample_offset) * qpad->sample_size;
}
case FOURCC_ap4h:
case FOURCC_ap4x:
default:
GST_ERROR_OBJECT (qtmux, "unsupported codec for pre-filling");
return -1;
}
return -1;
}
static GstClockTime
prefill_get_next_timestamp (GstQTMux * qtmux, GstQTPad * qpad)
{
switch (qpad->fourcc) {
case FOURCC_apch:
case FOURCC_apcn:
case FOURCC_apcs:
case FOURCC_apco:
case FOURCC_ap4h:
case FOURCC_ap4x:
return gst_util_uint64_scale (qpad->sample_offset + 1,
qpad->expected_sample_duration_d * GST_SECOND,
qpad->expected_sample_duration_n);
case FOURCC_sowt:
case FOURCC_twos:{
guint64 block_idx;
guint64 next_sample_offset;
block_idx = prefill_get_block_index (qtmux, qpad);
next_sample_offset =
gst_util_uint64_scale (block_idx + 1,
qpad->expected_sample_duration_d *
atom_trak_get_timescale (qpad->trak),
qpad->expected_sample_duration_n);
return gst_util_uint64_scale (next_sample_offset, GST_SECOND,
atom_trak_get_timescale (qpad->trak));
}
default:
GST_ERROR_OBJECT (qtmux, "unsupported codec for pre-filling");
return -1;
}
return -1;
}
static GstBuffer *
prefill_raw_audio_prepare_buf_func (GstQTPad * qtpad, GstBuffer * buf,
GstQTMux * qtmux)
{
guint64 block_idx;
guint64 nsamples;
GstClockTime input_timestamp;
guint64 input_timestamp_distance;
if (buf)
gst_adapter_push (qtpad->raw_audio_adapter, buf);
block_idx = gst_util_uint64_scale_ceil (qtpad->raw_audio_adapter_offset,
qtpad->expected_sample_duration_n,
qtpad->expected_sample_duration_d *
atom_trak_get_timescale (qtpad->trak));
nsamples =
gst_util_uint64_scale (block_idx + 1,
qtpad->expected_sample_duration_d * atom_trak_get_timescale (qtpad->trak),
qtpad->expected_sample_duration_n) - qtpad->raw_audio_adapter_offset;
if ((!GST_COLLECT_PADS_STATE_IS_SET (&qtpad->collect,
GST_COLLECT_PADS_STATE_EOS)
&& gst_adapter_available (qtpad->raw_audio_adapter) <
nsamples * qtpad->sample_size)
|| gst_adapter_available (qtpad->raw_audio_adapter) == 0) {
return NULL;
}
input_timestamp =
gst_adapter_prev_pts (qtpad->raw_audio_adapter,
&input_timestamp_distance);
if (input_timestamp != GST_CLOCK_TIME_NONE)
input_timestamp +=
gst_util_uint64_scale (input_timestamp_distance, GST_SECOND,
qtpad->sample_size * atom_trak_get_timescale (qtpad->trak));
buf =
gst_adapter_take_buffer (qtpad->raw_audio_adapter,
!GST_COLLECT_PADS_STATE_IS_SET (&qtpad->collect,
GST_COLLECT_PADS_STATE_EOS) ? nsamples *
qtpad->sample_size : gst_adapter_available (qtpad->raw_audio_adapter));
GST_BUFFER_PTS (buf) = input_timestamp;
GST_BUFFER_DTS (buf) = GST_CLOCK_TIME_NONE;
GST_BUFFER_DURATION (buf) = GST_CLOCK_TIME_NONE;
qtpad->raw_audio_adapter_offset += nsamples;
/* Check if we have yet another block of raw audio in the adapter */
nsamples =
gst_util_uint64_scale (block_idx + 2,
qtpad->expected_sample_duration_d * atom_trak_get_timescale (qtpad->trak),
qtpad->expected_sample_duration_n) - qtpad->raw_audio_adapter_offset;
if (gst_adapter_available (qtpad->raw_audio_adapter) >=
nsamples * qtpad->sample_size) {
input_timestamp =
gst_adapter_prev_pts (qtpad->raw_audio_adapter,
&input_timestamp_distance);
if (input_timestamp != GST_CLOCK_TIME_NONE)
input_timestamp +=
gst_util_uint64_scale (input_timestamp_distance, GST_SECOND,
qtpad->sample_size * atom_trak_get_timescale (qtpad->trak));
qtpad->raw_audio_adapter_pts = input_timestamp;
} else {
qtpad->raw_audio_adapter_pts = GST_CLOCK_TIME_NONE;
}
return buf;
}
static gboolean
prefill_update_sample_size (GstQTMux * qtmux, GstQTPad * qpad)
{
switch (qpad->fourcc) {
case FOURCC_apch:
case FOURCC_apcn:
case FOURCC_apcs:
case FOURCC_apco:
case FOURCC_ap4h:
case FOURCC_ap4x:{
guint sample_size = prefill_get_sample_size (qtmux, qpad);
atom_trak_set_constant_size_samples (qpad->trak, sample_size);
return TRUE;
}
case FOURCC_sowt:
case FOURCC_twos:{
GSList *walk;
/* Find the (first) video track and assume that we have to output
* in that size */
for (walk = qtmux->collect->data; walk; walk = g_slist_next (walk)) {
GstCollectData *cdata = (GstCollectData *) walk->data;
GstQTPad *tmp_qpad = (GstQTPad *) cdata;
if (tmp_qpad->trak->is_video) {
qpad->expected_sample_duration_n =
tmp_qpad->expected_sample_duration_n;
qpad->expected_sample_duration_d =
tmp_qpad->expected_sample_duration_d;
break;
}
}
if (walk == NULL) {
GST_INFO_OBJECT (qpad->collect.pad,
"Found no video framerate, using 40ms audio buffers");
qpad->expected_sample_duration_n = 25;
qpad->expected_sample_duration_d = 1;
}
/* Set a prepare_buf_func that ensures this */
qpad->prepare_buf_func = prefill_raw_audio_prepare_buf_func;
qpad->raw_audio_adapter = gst_adapter_new ();
qpad->raw_audio_adapter_offset = 0;
qpad->raw_audio_adapter_pts = GST_CLOCK_TIME_NONE;
return TRUE;
}
default:
return TRUE;
}
}
/* Only called at startup when doing the "fake" iteration of all tracks in order
* to prefill the sample tables in the header. */
static GstQTPad *
find_best_pad_prefill_start (GstQTMux * qtmux)
{
GSList *walk;
GstQTPad *best_pad = NULL;
/* If interleave limits have been specified and the current pad is within
* those interleave limits, pick that one, otherwise let's try to figure out
* the next best one. */
if (qtmux->current_pad &&
(qtmux->interleave_bytes != 0 || qtmux->interleave_time != 0) &&
(qtmux->interleave_bytes == 0
|| qtmux->current_chunk_size <= qtmux->interleave_bytes)
&& (qtmux->interleave_time == 0
|| qtmux->current_chunk_duration <= qtmux->interleave_time)
&& qtmux->mux_mode != GST_QT_MUX_MODE_FRAGMENTED
&& qtmux->mux_mode != GST_QT_MUX_MODE_FRAGMENTED_STREAMABLE) {
if (qtmux->current_pad->total_duration < qtmux->reserved_max_duration) {
best_pad = qtmux->current_pad;
}
} else if (qtmux->collect->data->next) {
/* Attempt to try another pad if we have one. Otherwise use the only pad
* present */
best_pad = qtmux->current_pad = NULL;
}
/* The next best pad is the one which has the lowest timestamp and hasn't
* exceeded the reserved max duration */
if (!best_pad) {
GstClockTime best_time = GST_CLOCK_TIME_NONE;
for (walk = qtmux->collect->data; walk; walk = g_slist_next (walk)) {
GstCollectData *cdata = (GstCollectData *) walk->data;
GstQTPad *qtpad = (GstQTPad *) cdata;
GstClockTime timestamp;
if (qtpad->total_duration >= qtmux->reserved_max_duration)
continue;
timestamp = qtpad->total_duration;
if (best_pad == NULL ||
!GST_CLOCK_TIME_IS_VALID (best_time) || timestamp < best_time) {
best_pad = qtpad;
best_time = timestamp;
}
}
}
return best_pad;
}
/* Called when starting the file in prefill_mode to figure out all the entries
* of the header based on the input stream and reserved maximum duration.
*
* The _actual_ header (i.e. with the proper duration and trimmed sample tables)
* will be updated and written on EOS. */
static gboolean
gst_qt_mux_prefill_samples (GstQTMux * qtmux)
{
GstQTPad *qpad;
GSList *walk;
GstQTMuxClass *qtmux_klass = (GstQTMuxClass *) (G_OBJECT_GET_CLASS (qtmux));
/* Update expected sample sizes/durations as needed, this is for raw
* audio where samples are actual audio samples. */
for (walk = qtmux->collect->data; walk; walk = g_slist_next (walk)) {
GstCollectData *cdata = (GstCollectData *) walk->data;
GstQTPad *qpad = (GstQTPad *) cdata;
if (!prefill_update_sample_size (qtmux, qpad))
return FALSE;
}
if (qtmux_klass->format == GST_QT_MUX_FORMAT_QT) {
/* For the first sample check/update timecode as needed. We do that before
* all actual samples as the code in gst_qt_mux_add_buffer() does it with
* initial buffer directly, not with last_buf */
for (walk = qtmux->collect->data; walk; walk = g_slist_next (walk)) {
GstCollectData *cdata = (GstCollectData *) walk->data;
GstQTPad *qpad = (GstQTPad *) cdata;
GstBuffer *buffer =
gst_collect_pads_peek (qtmux->collect, (GstCollectData *) qpad);
GstVideoTimeCodeMeta *tc_meta;
if (buffer && (tc_meta = gst_buffer_get_video_time_code_meta (buffer))) {
GstVideoTimeCode *tc = &tc_meta->tc;
qpad->tc_trak = atom_trak_new (qtmux->context);
atom_moov_add_trak (qtmux->moov, qpad->tc_trak);
qpad->trak->tref = atom_tref_new (FOURCC_tmcd);
atom_tref_add_entry (qpad->trak->tref, qpad->tc_trak->tkhd.track_ID);
atom_trak_set_timecode_type (qpad->tc_trak, qtmux->context,
qpad->trak->mdia.mdhd.time_info.timescale, tc);
atom_trak_add_samples (qpad->tc_trak, 1, 1, 4,
qtmux->mdat_size, FALSE, 0);
qpad->tc_pos = qtmux->mdat_size;
qpad->first_tc = gst_video_time_code_copy (tc);
qpad->first_pts = GST_BUFFER_PTS (buffer);
qtmux->current_chunk_offset = -1;
qtmux->current_chunk_size = 0;
qtmux->current_chunk_duration = 0;
qtmux->mdat_size += 4;
}
if (buffer)
gst_buffer_unref (buffer);
}
}
while ((qpad = find_best_pad_prefill_start (qtmux))) {
GstClockTime timestamp, next_timestamp, duration;
guint nsamples, sample_size;
guint64 chunk_offset;
gint64 scaled_duration;
gint64 pts_offset = 0;
gboolean sync = FALSE;
TrakBufferEntryInfo sample_entry;
sample_size = prefill_get_sample_size (qtmux, qpad);
if (sample_size == -1) {
return FALSE;
}
if (!qpad->samples)
qpad->samples = g_array_new (FALSE, FALSE, sizeof (TrakBufferEntryInfo));
timestamp = qpad->total_duration;
next_timestamp = prefill_get_next_timestamp (qtmux, qpad);
duration = next_timestamp - timestamp;
if (qpad->first_ts == GST_CLOCK_TIME_NONE)
qpad->first_ts = timestamp;
if (qpad->first_dts == GST_CLOCK_TIME_NONE)
qpad->first_dts = timestamp;
if (qtmux->current_pad != qpad || qtmux->current_chunk_offset == -1) {
qtmux->current_pad = qpad;
if (qtmux->current_chunk_offset == -1)
qtmux->current_chunk_offset = qtmux->mdat_size;
else
qtmux->current_chunk_offset += qtmux->current_chunk_size;
qtmux->current_chunk_size = 0;
qtmux->current_chunk_duration = 0;
}
if (qpad->sample_size)
nsamples = sample_size / qpad->sample_size;
else
nsamples = 1;
qpad->last_dts = timestamp;
scaled_duration = gst_util_uint64_scale_round (timestamp + duration,
atom_trak_get_timescale (qpad->trak),
GST_SECOND) - gst_util_uint64_scale_round (timestamp,
atom_trak_get_timescale (qpad->trak), GST_SECOND);
qtmux->current_chunk_size += sample_size;
qtmux->current_chunk_duration += duration;
qpad->total_bytes += sample_size;
chunk_offset = qtmux->current_chunk_offset;
/* I-frame only, no frame reordering */
sync = FALSE;
pts_offset = 0;
if (qtmux->current_chunk_duration > qtmux->longest_chunk
|| !GST_CLOCK_TIME_IS_VALID (qtmux->longest_chunk)) {
qtmux->longest_chunk = qtmux->current_chunk_duration;
}
sample_entry.track_id = qpad->trak->tkhd.track_ID;
sample_entry.nsamples = nsamples;
sample_entry.delta = scaled_duration / nsamples;
sample_entry.size = sample_size / nsamples;
sample_entry.chunk_offset = chunk_offset;
sample_entry.pts_offset = pts_offset;
sample_entry.sync = sync;
sample_entry.do_pts = TRUE;
g_array_append_val (qpad->samples, sample_entry);
atom_trak_add_samples (qpad->trak, nsamples, scaled_duration / nsamples,
sample_size / nsamples, chunk_offset, sync, pts_offset);
qpad->total_duration = next_timestamp;
qtmux->mdat_size += sample_size;
qpad->sample_offset += nsamples;
}
return TRUE;
}
static GstFlowReturn
gst_qt_mux_start_file (GstQTMux * qtmux)
{
GstQTMuxClass *qtmux_klass = (GstQTMuxClass *) (G_OBJECT_GET_CLASS (qtmux));
GstFlowReturn ret = GST_FLOW_OK;
GstCaps *caps;
GstSegment segment;
gchar s_id[32];
GstClockTime reserved_max_duration;
guint reserved_bytes_per_sec_per_trak;
GSList *walk;
GST_DEBUG_OBJECT (qtmux, "starting file");
GST_OBJECT_LOCK (qtmux);
reserved_max_duration = qtmux->reserved_max_duration;
reserved_bytes_per_sec_per_trak = qtmux->reserved_bytes_per_sec_per_trak;
GST_OBJECT_UNLOCK (qtmux);
/* stream-start (FIXME: create id based on input ids) */
g_snprintf (s_id, sizeof (s_id), "qtmux-%08x", g_random_int ());
gst_pad_push_event (qtmux->srcpad, gst_event_new_stream_start (s_id));
caps = gst_caps_copy (gst_pad_get_pad_template_caps (qtmux->srcpad));
/* qtmux has structure with and without variant, remove all but the first */
while (gst_caps_get_size (caps) > 1)
gst_caps_remove_structure (caps, 1);
gst_pad_set_caps (qtmux->srcpad, caps);
gst_caps_unref (caps);
/* Default is 'normal' mode */
qtmux->mux_mode = GST_QT_MUX_MODE_MOOV_AT_END;
/* Require a sensible fragment duration when muxing
* using the ISML muxer */
if (qtmux_klass->format == GST_QT_MUX_FORMAT_ISML &&
qtmux->fragment_duration == 0)
goto invalid_isml;
if (qtmux->fragment_duration > 0) {
if (qtmux->streamable)
qtmux->mux_mode = GST_QT_MUX_MODE_FRAGMENTED_STREAMABLE;
else
qtmux->mux_mode = GST_QT_MUX_MODE_FRAGMENTED;
} else if (qtmux->fast_start) {
qtmux->mux_mode = GST_QT_MUX_MODE_FAST_START;
} else if (reserved_max_duration != GST_CLOCK_TIME_NONE) {
if (qtmux->reserved_prefill)
qtmux->mux_mode = GST_QT_MUX_MODE_ROBUST_RECORDING_PREFILL;
else
qtmux->mux_mode = GST_QT_MUX_MODE_ROBUST_RECORDING;
}
switch (qtmux->mux_mode) {
case GST_QT_MUX_MODE_MOOV_AT_END:
case GST_QT_MUX_MODE_ROBUST_RECORDING:
/* We have to be able to seek to rewrite the mdat header, or any
* moov atom we write will not be visible in the file, because an
* MDAT with 0 as the size covers the rest of the file. A file
* with no moov is not playable, so error out now. */
if (!gst_qt_mux_downstream_is_seekable (qtmux)) {
GST_ELEMENT_ERROR (qtmux, STREAM, MUX,
("Downstream is not seekable - will not be able to create a playable file"),
(NULL));
return GST_FLOW_ERROR;
}
break;
case GST_QT_MUX_MODE_FAST_START:
case GST_QT_MUX_MODE_FRAGMENTED_STREAMABLE:
break; /* Don't need seekability, ignore */
case GST_QT_MUX_MODE_FRAGMENTED:
if (!gst_qt_mux_downstream_is_seekable (qtmux)) {
GST_WARNING_OBJECT (qtmux, "downstream is not seekable, but "
"streamable=false. Will ignore that and create streamable output "
"instead");
qtmux->streamable = TRUE;
g_object_notify (G_OBJECT (qtmux), "streamable");
}
break;
case GST_QT_MUX_MODE_ROBUST_RECORDING_PREFILL:
if (!gst_qt_mux_downstream_is_seekable (qtmux)) {
GST_WARNING_OBJECT (qtmux,
"downstream is not seekable, will not be able "
"to trim samples table at the end if less than reserved-duration is "
"recorded");
}
break;
}
/* let downstream know we think in BYTES and expect to do seeking later on */
gst_segment_init (&segment, GST_FORMAT_BYTES);
gst_pad_push_event (qtmux->srcpad, gst_event_new_segment (&segment));
GST_OBJECT_LOCK (qtmux);
if (qtmux->timescale == 0) {
guint32 suggested_timescale = 0;
GSList *walk;
/* Calculate a reasonable timescale for the moov:
* If there is video, it is the biggest video track timescale or an even
* multiple of it if it's smaller than 1800.
* Otherwise it is 1800 */
for (walk = qtmux->sinkpads; walk; walk = g_slist_next (walk)) {
GstCollectData *cdata = (GstCollectData *) walk->data;
GstQTPad *qpad = (GstQTPad *) cdata;
if (!qpad->trak)
continue;
/* not video */
if (!qpad->trak->mdia.minf.vmhd)
continue;
suggested_timescale =
MAX (qpad->trak->mdia.mdhd.time_info.timescale, suggested_timescale);
}
if (suggested_timescale == 0)
suggested_timescale = 1800;
while (suggested_timescale < 1800)
suggested_timescale *= 2;
qtmux->timescale = suggested_timescale;
}
/* initialize our moov recovery file */
if (qtmux->moov_recov_file_path) {
gst_qt_mux_prepare_moov_recovery (qtmux);
}
/* Make sure the first time we update the moov, we'll
* include any tagsetter tags */
qtmux->tags_changed = TRUE;
GST_OBJECT_UNLOCK (qtmux);
/*
* send mdat header if already needed, and mark position for later update.
* We don't send ftyp now if we are on fast start mode, because we can
* better fine tune using the information we gather to create the whole moov
* atom.
*/
switch (qtmux->mux_mode) {
case GST_QT_MUX_MODE_MOOV_AT_END:
ret = gst_qt_mux_prepare_and_send_ftyp (qtmux);
if (ret != GST_FLOW_OK)
break;
/* Store this as the mdat offset for later updating
* when we write the moov */
qtmux->mdat_pos = qtmux->header_size;
/* extended atom in case we go over 4GB while writing and need
* the full 64-bit atom */
ret =
gst_qt_mux_send_mdat_header (qtmux, &qtmux->header_size, 0, TRUE,
FALSE);
break;
case GST_QT_MUX_MODE_ROBUST_RECORDING:
ret = gst_qt_mux_prepare_and_send_ftyp (qtmux);
if (ret != GST_FLOW_OK)
break;
/* Pad ftyp out to an 8-byte boundary before starting the moov
* ping pong region. It should be well less than 1 disk sector,
* unless there's a bajillion compatible types listed,
* but let's be sure the free atom doesn't cross a sector
* boundary anyway */
if (qtmux->header_size % 8) {
/* Extra 8 bytes for the padding free atom header */
guint padding = (guint) (16 - (qtmux->header_size % 8));
GST_LOG_OBJECT (qtmux, "Rounding ftyp by %u bytes", padding);
ret =
gst_qt_mux_send_free_atom (qtmux, &qtmux->header_size, padding,
FALSE);
if (ret != GST_FLOW_OK)
return ret;
}
/* Store this as the moov offset for later updating.
* We record mdat position below */
qtmux->moov_pos = qtmux->header_size;
/* Set up the initial 'ping' state of the ping-pong buffers */
qtmux->reserved_moov_first_active = TRUE;
gst_qt_mux_configure_moov (qtmux);
gst_qt_mux_setup_metadata (qtmux);
/* Empty free atom to begin, starting on an 8-byte boundary */
ret = gst_qt_mux_send_free_atom (qtmux, &qtmux->header_size, 8, FALSE);
if (ret != GST_FLOW_OK)
return ret;
/* Moov header, not padded yet */
ret = gst_qt_mux_send_moov (qtmux, &qtmux->header_size, 0, FALSE, FALSE);
if (ret != GST_FLOW_OK)
return ret;
/* The moov we just sent contains the 'base' size of the moov, before
* we put in any time-dependent per-trak data. Use that to make
* a good estimate of how much extra to reserve */
/* Calculate how much space to reserve for our MOOV atom.
* We actually reserve twice that, for ping-pong buffers */
qtmux->base_moov_size = qtmux->last_moov_size;
GST_LOG_OBJECT (qtmux, "Base moov size is %u before any indexes",
qtmux->base_moov_size);
qtmux->reserved_moov_size = qtmux->base_moov_size +
gst_util_uint64_scale (reserved_max_duration,
reserved_bytes_per_sec_per_trak *
atom_moov_get_trak_count (qtmux->moov), GST_SECOND);
/* Need space for at least 4 atom headers. More really, but
* this as an absolute minimum */
if (qtmux->reserved_moov_size < 4 * 8)
goto reserved_moov_too_small;
GST_DEBUG_OBJECT (qtmux, "reserving header area of size %u",
2 * qtmux->reserved_moov_size + 16);
GST_OBJECT_LOCK (qtmux);
qtmux->reserved_duration_remaining =
gst_util_uint64_scale (qtmux->reserved_moov_size -
qtmux->base_moov_size, GST_SECOND,
reserved_bytes_per_sec_per_trak *
atom_moov_get_trak_count (qtmux->moov));
GST_OBJECT_UNLOCK (qtmux);
/* Now that we know how much reserved space is targetted,
* output a free atom to fill the extra reserved */
ret = gst_qt_mux_send_free_atom (qtmux, &qtmux->header_size,
qtmux->reserved_moov_size - qtmux->base_moov_size, FALSE);
if (ret != GST_FLOW_OK)
return ret;
/* Then a free atom containing 'pong' buffer, with an
* extra 8 bytes to account for the free atom header itself */
ret = gst_qt_mux_send_free_atom (qtmux, &qtmux->header_size,
qtmux->reserved_moov_size + 8, FALSE);
if (ret != GST_FLOW_OK)
return ret;
/* extra atoms go after the free/moov(s), before the mdat */
ret =
gst_qt_mux_send_extra_atoms (qtmux, TRUE, &qtmux->header_size, FALSE);
if (ret != GST_FLOW_OK)
return ret;
qtmux->mdat_pos = qtmux->header_size;
/* extended atom in case we go over 4GB while writing and need
* the full 64-bit atom */
ret =
gst_qt_mux_send_mdat_header (qtmux, &qtmux->header_size, 0, TRUE,
FALSE);
break;
case GST_QT_MUX_MODE_ROBUST_RECORDING_PREFILL:
ret = gst_qt_mux_prepare_and_send_ftyp (qtmux);
if (ret != GST_FLOW_OK)
break;
/* Store this as the moov offset for later updating.
* We record mdat position below */
qtmux->moov_pos = qtmux->header_size;
if (!gst_qt_mux_prefill_samples (qtmux)) {
GST_ELEMENT_ERROR (qtmux, STREAM, MUX,
("Unsupported codecs or configuration for prefill mode"), (NULL));
return GST_FLOW_ERROR;
}
gst_qt_mux_update_global_statistics (qtmux);
gst_qt_mux_configure_moov (qtmux);
gst_qt_mux_update_edit_lists (qtmux);
gst_qt_mux_setup_metadata (qtmux);
/* Moov header with pre-filled samples */
ret = gst_qt_mux_send_moov (qtmux, &qtmux->header_size, 0, FALSE, FALSE);
if (ret != GST_FLOW_OK)
return ret;
/* last_moov_size now contains the full size of the moov, moov_pos the
* position. This allows us to rewrite it in the very end as needed */
qtmux->reserved_moov_size =
qtmux->last_moov_size + 12 * g_slist_length (qtmux->sinkpads) + 8;
/* Send an additional free atom at the end so we definitely have space
* to rewrite the moov header at the end and remove the samples that
* were not actually written */
ret =
gst_qt_mux_send_free_atom (qtmux, &qtmux->header_size,
12 * g_slist_length (qtmux->sinkpads) + 8, FALSE);
if (ret != GST_FLOW_OK)
return ret;
/* extra atoms go after the free/moov(s), before the mdat */
ret =
gst_qt_mux_send_extra_atoms (qtmux, TRUE, &qtmux->header_size, FALSE);
if (ret != GST_FLOW_OK)
return ret;
qtmux->mdat_pos = qtmux->header_size;
/* And now send the mdat header */
ret =
gst_qt_mux_send_mdat_header (qtmux, &qtmux->header_size,
qtmux->mdat_size, TRUE, FALSE);
/* chunks position is set relative to the first byte of the
* MDAT atom payload. Set the overall offset into the file */
atom_moov_chunks_set_offset (qtmux->moov, qtmux->header_size);
{
GstSegment segment;
gst_segment_init (&segment, GST_FORMAT_BYTES);
segment.start = qtmux->moov_pos;
gst_pad_push_event (qtmux->srcpad, gst_event_new_segment (&segment));
ret = gst_qt_mux_send_moov (qtmux, NULL, 0, FALSE, FALSE);
if (ret != GST_FLOW_OK)
return ret;
segment.start = qtmux->header_size;
gst_pad_push_event (qtmux->srcpad, gst_event_new_segment (&segment));
}
qtmux->current_chunk_size = 0;
qtmux->current_chunk_duration = 0;
qtmux->current_chunk_offset = -1;
qtmux->mdat_size = 0;
qtmux->current_pad = NULL;
qtmux->longest_chunk = GST_CLOCK_TIME_NONE;
for (walk = qtmux->collect->data; walk; walk = g_slist_next (walk)) {
GstCollectData *cdata = (GstCollectData *) walk->data;
GstQTPad *qtpad = (GstQTPad *) cdata;
qtpad->total_bytes = 0;
qtpad->total_duration = 0;
qtpad->first_dts = qtpad->first_ts = GST_CLOCK_TIME_NONE;
qtpad->last_dts = GST_CLOCK_TIME_NONE;
qtpad->sample_offset = 0;
}
break;
case GST_QT_MUX_MODE_FAST_START:
GST_OBJECT_LOCK (qtmux);
qtmux->fast_start_file = g_fopen (qtmux->fast_start_file_path, "wb+");
if (!qtmux->fast_start_file)
goto open_failed;
GST_OBJECT_UNLOCK (qtmux);
/* send a dummy buffer for preroll */
ret = gst_qt_mux_send_buffer (qtmux, gst_buffer_new (), NULL, FALSE);
break;
case GST_QT_MUX_MODE_FRAGMENTED:
case GST_QT_MUX_MODE_FRAGMENTED_STREAMABLE:
ret = gst_qt_mux_prepare_and_send_ftyp (qtmux);
if (ret != GST_FLOW_OK)
break;
/* store the moov pos so we can update the duration later
* in non-streamable mode */
qtmux->moov_pos = qtmux->header_size;
GST_DEBUG_OBJECT (qtmux, "fragment duration %d ms, writing headers",
qtmux->fragment_duration);
/* also used as snapshot marker to indicate fragmented file */
qtmux->fragment_sequence = 1;
/* prepare moov and/or tags */
gst_qt_mux_configure_moov (qtmux);
gst_qt_mux_setup_metadata (qtmux);
ret = gst_qt_mux_send_moov (qtmux, &qtmux->header_size, 0, FALSE, FALSE);
if (ret != GST_FLOW_OK)
return ret;
/* extra atoms */
ret =
gst_qt_mux_send_extra_atoms (qtmux, TRUE, &qtmux->header_size, FALSE);
if (ret != GST_FLOW_OK)
break;
/* prepare index if not streamable */
if (qtmux->mux_mode == GST_QT_MUX_MODE_FRAGMENTED)
qtmux->mfra = atom_mfra_new (qtmux->context);
break;
}
return ret;
/* ERRORS */
invalid_isml:
{
GST_ELEMENT_ERROR (qtmux, STREAM, MUX,
("Cannot create an ISML file with 0 fragment duration"), (NULL));
return GST_FLOW_ERROR;
}
reserved_moov_too_small:
{
GST_ELEMENT_ERROR (qtmux, STREAM, MUX,
("Not enough reserved space for creating headers"), (NULL));
return GST_FLOW_ERROR;
}
open_failed:
{
GST_ELEMENT_ERROR (qtmux, RESOURCE, OPEN_READ_WRITE,
(("Could not open temporary file \"%s\""),
qtmux->fast_start_file_path), GST_ERROR_SYSTEM);
GST_OBJECT_UNLOCK (qtmux);
return GST_FLOW_ERROR;
}
}
static GstFlowReturn
gst_qt_mux_send_last_buffers (GstQTMux * qtmux)
{
GstFlowReturn ret = GST_FLOW_OK;
GSList *walk;
for (walk = qtmux->collect->data; walk; walk = g_slist_next (walk)) {
GstCollectData *cdata = (GstCollectData *) walk->data;
GstQTPad *qtpad = (GstQTPad *) cdata;
/* avoid add_buffer complaining if not negotiated
* in which case no buffers either, so skipping */
if (!qtpad->fourcc) {
GST_DEBUG_OBJECT (qtmux, "Pad %s has never had buffers",
GST_PAD_NAME (qtpad->collect.pad));
continue;
}
/* send last buffer; also flushes possibly queued buffers/ts */
GST_DEBUG_OBJECT (qtmux, "Sending the last buffer for pad %s",
GST_PAD_NAME (qtpad->collect.pad));
ret = gst_qt_mux_add_buffer (qtmux, qtpad, NULL);
if (ret != GST_FLOW_OK) {
GST_WARNING_OBJECT (qtmux, "Failed to send last buffer for %s, "
"flow return: %s", GST_PAD_NAME (qtpad->collect.pad),
gst_flow_get_name (ret));
}
}
return ret;
}
static void
gst_qt_mux_update_global_statistics (GstQTMux * qtmux)
{
GSList *walk;
/* for setting some subtitles fields */
guint max_width = 0;
guint max_height = 0;
qtmux->first_ts = qtmux->last_dts = GST_CLOCK_TIME_NONE;
for (walk = qtmux->collect->data; walk; walk = g_slist_next (walk)) {
GstCollectData *cdata = (GstCollectData *) walk->data;
GstQTPad *qtpad = (GstQTPad *) cdata;
if (!qtpad->fourcc) {
GST_DEBUG_OBJECT (qtmux, "Pad %s has never had buffers",
GST_PAD_NAME (qtpad->collect.pad));
continue;
}
/* having flushed above, can check for buffers now */
if (GST_CLOCK_TIME_IS_VALID (qtpad->first_ts)) {
GstClockTime first_pts_in = qtpad->first_ts;
/* it should be, since we got first_ts by adding adjustment
* to a positive incoming PTS */
if (qtpad->dts_adjustment <= first_pts_in)
first_pts_in -= qtpad->dts_adjustment;
/* determine max stream duration */
if (!GST_CLOCK_TIME_IS_VALID (qtmux->last_dts)
|| qtpad->last_dts > qtmux->last_dts) {
qtmux->last_dts = qtpad->last_dts;
}
if (!GST_CLOCK_TIME_IS_VALID (qtmux->first_ts)
|| first_pts_in < qtmux->first_ts) {
/* we need the original incoming PTS here, as this first_ts
* is used in update_edit_lists to construct the edit list that arrange
* for sync'ed streams. The first_ts is most likely obtained from
* some (audio) stream with 0 dts_adjustment and initial 0 PTS,
* so it makes no difference, though it matters in other cases */
qtmux->first_ts = first_pts_in;
}
}
/* subtitles need to know the video width/height,
* it is stored shifted 16 bits to the left according to the
* spec */
max_width = MAX (max_width, (qtpad->trak->tkhd.width >> 16));
max_height = MAX (max_height, (qtpad->trak->tkhd.height >> 16));
/* update average bitrate of streams if needed */
{
guint32 avgbitrate = 0;
guint32 maxbitrate = qtpad->max_bitrate;
if (qtpad->avg_bitrate)
avgbitrate = qtpad->avg_bitrate;
else if (qtpad->total_duration > 0)
avgbitrate = (guint32) gst_util_uint64_scale_round (qtpad->total_bytes,
8 * GST_SECOND, qtpad->total_duration);
atom_trak_update_bitrates (qtpad->trak, avgbitrate, maxbitrate);
}
}
/* need to update values on subtitle traks now that we know the
* max width and height */
for (walk = qtmux->collect->data; walk; walk = g_slist_next (walk)) {
GstCollectData *cdata = (GstCollectData *) walk->data;
GstQTPad *qtpad = (GstQTPad *) cdata;
if (!qtpad->fourcc) {
GST_DEBUG_OBJECT (qtmux, "Pad %s has never had buffers",
GST_PAD_NAME (qtpad->collect.pad));
continue;
}
if (qtpad->fourcc == FOURCC_tx3g) {
atom_trak_tx3g_update_dimension (qtpad->trak, max_width, max_height);
}
}
}
/* Called after gst_qt_mux_update_global_statistics() updates the
* first_ts tracking, to create/set edit lists for delayed streams */
static void
gst_qt_mux_update_edit_lists (GstQTMux * qtmux)
{
GSList *walk;
GST_DEBUG_OBJECT (qtmux, "Media first ts selected: %" GST_TIME_FORMAT,
GST_TIME_ARGS (qtmux->first_ts));
/* add/update EDTSs for late streams. configure_moov will have
* set the trak durations above by summing the sample tables,
* here we extend that if needing to insert an empty segment */
for (walk = qtmux->collect->data; walk; walk = g_slist_next (walk)) {
GstCollectData *cdata = (GstCollectData *) walk->data;
GstQTPad *qtpad = (GstQTPad *) cdata;
atom_trak_edts_clear (qtpad->trak);
if (GST_CLOCK_TIME_IS_VALID (qtpad->first_ts)) {
guint32 lateness = 0;
guint32 duration = qtpad->trak->tkhd.duration;
gboolean has_gap;
has_gap = (qtpad->first_ts > (qtmux->first_ts + qtpad->dts_adjustment));
if (has_gap) {
GstClockTime diff;
diff = qtpad->first_ts - (qtmux->first_ts + qtpad->dts_adjustment);
lateness = gst_util_uint64_scale_round (diff,
qtmux->timescale, GST_SECOND);
if (lateness > 0) {
GST_DEBUG_OBJECT (qtmux,
"Pad %s is a late stream by %" GST_TIME_FORMAT,
GST_PAD_NAME (qtpad->collect.pad), GST_TIME_ARGS (diff));
atom_trak_set_elst_entry (qtpad->trak, 0, lateness, (guint32) - 1,
(guint32) (1 * 65536.0));
}
}
/* Always write an edit list for the whole track. In general this is not
* necessary except for the case of having a gap or DTS adjustment but
* it allows to give the whole track's duration in the usually more
* accurate media timescale
*/
{
GstClockTime ctts = 0;
guint32 media_start;
if (qtpad->first_ts > qtpad->first_dts)
ctts = qtpad->first_ts - qtpad->first_dts;
media_start = gst_util_uint64_scale_round (ctts,
atom_trak_get_timescale (qtpad->trak), GST_SECOND);
/* atom_trak_set_elst_entry() has a quirk - if the edit list
* is empty because there's no gap added above, this call
* will not replace index 1, it will create the entry at index 0.
* Luckily, that's exactly what we want here */
atom_trak_set_elst_entry (qtpad->trak, 1, duration, media_start,
(guint32) (1 * 65536.0));
}
/* need to add the empty time to the trak duration */
duration += lateness;
qtpad->trak->tkhd.duration = duration;
if (qtpad->tc_trak) {
qtpad->tc_trak->tkhd.duration = duration;
qtpad->tc_trak->mdia.mdhd.time_info.duration = duration;
}
/* And possibly grow the moov duration */
if (duration > qtmux->moov->mvhd.time_info.duration) {
qtmux->moov->mvhd.time_info.duration = duration;
qtmux->moov->mvex.mehd.fragment_duration = duration;
}
}
}
}
static GstFlowReturn
gst_qt_mux_update_timecode (GstQTMux * qtmux, GstQTPad * qtpad)
{
GstSegment segment;
GstBuffer *buf;
GstMapInfo map;
guint64 offset = qtpad->tc_pos;
GstQTMuxClass *qtmux_klass = (GstQTMuxClass *) (G_OBJECT_GET_CLASS (qtmux));
if (qtmux_klass->format != GST_QT_MUX_FORMAT_QT)
return GST_FLOW_OK;
g_assert (qtpad->tc_pos != -1);
gst_segment_init (&segment, GST_FORMAT_BYTES);
segment.start = offset;
gst_pad_push_event (qtmux->srcpad, gst_event_new_segment (&segment));
buf = gst_buffer_new_and_alloc (4);
gst_buffer_map (buf, &map, GST_MAP_WRITE);
GST_WRITE_UINT32_BE (map.data,
gst_video_time_code_frames_since_daily_jam (qtpad->first_tc));
gst_buffer_unmap (buf, &map);
/* Reset this value, so the timecode won't be re-rewritten */
qtpad->tc_pos = -1;
return gst_qt_mux_send_buffer (qtmux, buf, &offset, FALSE);
}
static GstFlowReturn
gst_qt_mux_stop_file (GstQTMux * qtmux)
{
gboolean ret = GST_FLOW_OK;
guint64 offset = 0, size = 0;
gboolean large_file;
GSList *walk;
GST_DEBUG_OBJECT (qtmux, "Updating remaining values and sending last data");
/* pushing last buffers for each pad */
if ((ret = gst_qt_mux_send_last_buffers (qtmux)) != GST_FLOW_OK)
return ret;
if (qtmux->mux_mode == GST_QT_MUX_MODE_FRAGMENTED_STREAMABLE) {
/* Streamable mode; no need to write duration or MFRA */
GST_DEBUG_OBJECT (qtmux, "streamable file; nothing to stop");
return GST_FLOW_OK;
}
gst_qt_mux_update_global_statistics (qtmux);
for (walk = qtmux->collect->data; walk; walk = walk->next) {
GstQTPad *qtpad = (GstQTPad *) walk->data;
if (qtpad->tc_pos != -1) {
/* File is being stopped and timecode hasn't been updated. Update it now
* with whatever we have */
ret = gst_qt_mux_update_timecode (qtmux, qtpad);
if (ret != GST_FLOW_OK)
return ret;
}
}
switch (qtmux->mux_mode) {
case GST_QT_MUX_MODE_FRAGMENTED:{
GstSegment segment;
guint8 *data = NULL;
GstBuffer *buf;
size = offset = 0;
GST_DEBUG_OBJECT (qtmux, "adding mfra");
if (!atom_mfra_copy_data (qtmux->mfra, &data, &size, &offset))
goto serialize_error;
buf = _gst_buffer_new_take_data (data, offset);
ret = gst_qt_mux_send_buffer (qtmux, buf, NULL, FALSE);
if (ret != GST_FLOW_OK)
return ret;
/* only mvex duration is updated,
* mvhd should be consistent with empty moov
* (but TODO maybe some clients do not handle that well ?) */
qtmux->moov->mvex.mehd.fragment_duration =
gst_util_uint64_scale (qtmux->last_dts, qtmux->timescale, GST_SECOND);
GST_DEBUG_OBJECT (qtmux, "rewriting moov with mvex duration %"
GST_TIME_FORMAT, GST_TIME_ARGS (qtmux->last_dts));
/* seek and rewrite the header */
gst_segment_init (&segment, GST_FORMAT_BYTES);
segment.start = qtmux->moov_pos;
gst_pad_push_event (qtmux->srcpad, gst_event_new_segment (&segment));
/* no need to seek back */
return gst_qt_mux_send_moov (qtmux, NULL, 0, FALSE, FALSE);
}
case GST_QT_MUX_MODE_ROBUST_RECORDING:{
ret = gst_qt_mux_robust_recording_rewrite_moov (qtmux);
if (G_UNLIKELY (ret != GST_FLOW_OK))
return ret;
/* Finalise by writing the final size into the mdat. Up until now
* it's been 0, which means 'rest of the file'
* No need to seek back after this, we won't write any more */
return gst_qt_mux_update_mdat_size (qtmux, qtmux->mdat_pos,
qtmux->mdat_size, NULL, TRUE);
}
case GST_QT_MUX_MODE_ROBUST_RECORDING_PREFILL:{
GSList *walk;
guint32 next_track_id = qtmux->moov->mvhd.next_track_id;
for (walk = qtmux->collect->data; walk; walk = g_slist_next (walk)) {
GstCollectData *cdata = (GstCollectData *) walk->data;
GstQTPad *qpad = (GstQTPad *) cdata;
const TrakBufferEntryInfo *sample_entry;
guint64 block_idx;
AtomSTBL *stbl = &qpad->trak->mdia.minf.stbl;
/* Get the block index of the last sample we wrote, not of the next
* sample we would write */
block_idx = prefill_get_block_index (qtmux, qpad);
g_assert (block_idx > 0);
block_idx--;
sample_entry =
&g_array_index (qpad->samples, TrakBufferEntryInfo, block_idx);
/* stts */
{
STTSEntry *entry;
guint64 nsamples = 0;
gint i, n;
n = atom_array_get_len (&stbl->stts.entries);
for (i = 0; i < n; i++) {
entry = &atom_array_index (&stbl->stts.entries, i);
if (nsamples + entry->sample_count >= qpad->sample_offset) {
entry->sample_count = qpad->sample_offset - nsamples;
stbl->stts.entries.len = i + 1;
break;
}
nsamples += entry->sample_count;
}
g_assert (i < n);
}
/* stsz */
{
g_assert (stbl->stsz.entries.len == 0);
stbl->stsz.table_size = qpad->sample_offset;
}
/* stco/stsc */
{
gint i, n;
guint64 nsamples = 0;
gint chunk_index = 0;
n = stbl->stco64.entries.len;
for (i = 0; i < n; i++) {
guint64 *entry = &atom_array_index (&stbl->stco64.entries, i);
if (*entry == sample_entry->chunk_offset) {
stbl->stco64.entries.len = i + 1;
chunk_index = i + 1;
break;
}
}
g_assert (i < n);
g_assert (chunk_index > 0);
n = stbl->stsc.entries.len;
for (i = 0; i < n; i++) {
STSCEntry *entry = &atom_array_index (&stbl->stsc.entries, i);
if (entry->first_chunk >= chunk_index)
break;
if (i > 0) {
nsamples +=
(entry->first_chunk - atom_array_index (&stbl->stsc.entries,
i -
1).first_chunk) * atom_array_index (&stbl->stsc.entries,
i - 1).samples_per_chunk;
}
}
g_assert (i <= n);
if (i > 0) {
STSCEntry *prev_entry =
&atom_array_index (&stbl->stsc.entries, i - 1);
nsamples +=
(chunk_index -
prev_entry->first_chunk) * prev_entry->samples_per_chunk;
if (qpad->sample_offset - nsamples > 0) {
stbl->stsc.entries.len = i;
atom_stsc_add_new_entry (&stbl->stsc, chunk_index,
qpad->sample_offset - nsamples);
} else {
stbl->stsc.entries.len = i;
stbl->stco64.entries.len--;
}
} else {
/* Everything in a single chunk */
stbl->stsc.entries.len = 0;
atom_stsc_add_new_entry (&stbl->stsc, chunk_index,
qpad->sample_offset);
}
}
{
GList *walk2;
for (walk2 = qtmux->moov->mvex.trexs; walk2; walk2 = walk2->next) {
AtomTREX *trex = walk2->data;
if (trex->track_ID == qpad->trak->tkhd.track_ID) {
trex->track_ID = next_track_id;
break;
}
}
qpad->trak->tkhd.track_ID = next_track_id++;
}
}
qtmux->moov->mvhd.next_track_id = next_track_id;
gst_qt_mux_update_global_statistics (qtmux);
gst_qt_mux_configure_moov (qtmux);
gst_qt_mux_update_edit_lists (qtmux);
/* Check if any gap edit lists were added. We don't have any space
* reserved for this in the moov and the pre-finalized moov would have
* broken A/V synchronization. Error out here now
*/
for (walk = qtmux->collect->data; walk; walk = g_slist_next (walk)) {
GstCollectData *cdata = (GstCollectData *) walk->data;
GstQTPad *qpad = (GstQTPad *) cdata;
if (qpad->trak->edts
&& g_slist_length (qpad->trak->edts->elst.entries) > 1) {
GST_ELEMENT_ERROR (qtmux, STREAM, MUX, (NULL),
("Can't support gaps in prefill mode"));
return GST_FLOW_ERROR;
}
}
gst_qt_mux_setup_metadata (qtmux);
atom_moov_chunks_set_offset (qtmux->moov, qtmux->header_size);
{
GstSegment segment;
gst_segment_init (&segment, GST_FORMAT_BYTES);
segment.start = qtmux->moov_pos;
gst_pad_push_event (qtmux->srcpad, gst_event_new_segment (&segment));
ret =
gst_qt_mux_send_moov (qtmux, NULL, qtmux->reserved_moov_size, FALSE,
FALSE);
if (ret != GST_FLOW_OK)
return ret;
if (qtmux->reserved_moov_size > qtmux->last_moov_size) {
ret =
gst_qt_mux_send_free_atom (qtmux, NULL,
qtmux->reserved_moov_size - qtmux->last_moov_size, TRUE);
}
if (ret != GST_FLOW_OK)
return ret;
}
ret = gst_qt_mux_update_mdat_size (qtmux, qtmux->mdat_pos,
qtmux->mdat_size, NULL, FALSE);
return ret;
}
default:
break;
}
/* Moov-at-end or fast-start mode from here down */
gst_qt_mux_configure_moov (qtmux);
gst_qt_mux_update_edit_lists (qtmux);
/* tags into file metadata */
gst_qt_mux_setup_metadata (qtmux);
large_file = (qtmux->mdat_size > MDAT_LARGE_FILE_LIMIT);
switch (qtmux->mux_mode) {
case GST_QT_MUX_MODE_FAST_START:{
/* if faststart, update the offset of the atoms in the movie with the offset
* that the movie headers before mdat will cause.
* Also, send the ftyp */
offset = size = 0;
ret = gst_qt_mux_prepare_and_send_ftyp (qtmux);
if (ret != GST_FLOW_OK) {
goto ftyp_error;
}
/* copy into NULL to obtain size */
if (!atom_moov_copy_data (qtmux->moov, NULL, &size, &offset))
goto serialize_error;
GST_DEBUG_OBJECT (qtmux, "calculated moov atom size %" G_GUINT64_FORMAT,
offset);
offset += qtmux->header_size + (large_file ? 16 : 8);
/* sum up with the extra atoms size */
ret = gst_qt_mux_send_extra_atoms (qtmux, FALSE, &offset, FALSE);
if (ret != GST_FLOW_OK)
return ret;
break;
}
default:
offset = qtmux->header_size;
break;
}
/* Now that we know the size of moov + extra atoms, we can adjust
* the chunk offsets stored into the moov */
atom_moov_chunks_set_offset (qtmux->moov, offset);
/* write out moov and extra atoms */
/* note: as of this point, we no longer care about tracking written data size,
* since there is no more use for it anyway */
ret = gst_qt_mux_send_moov (qtmux, NULL, 0, FALSE, FALSE);
if (ret != GST_FLOW_OK)
return ret;
/* extra atoms */
ret = gst_qt_mux_send_extra_atoms (qtmux, TRUE, NULL, FALSE);
if (ret != GST_FLOW_OK)
return ret;
switch (qtmux->mux_mode) {
case GST_QT_MUX_MODE_MOOV_AT_END:
{
/* mdat needs update iff not using faststart */
GST_DEBUG_OBJECT (qtmux, "updating mdat size");
ret = gst_qt_mux_update_mdat_size (qtmux, qtmux->mdat_pos,
qtmux->mdat_size, NULL, FALSE);
/* note; no seeking back to the end of file is done,
* since we no longer write anything anyway */
break;
}
case GST_QT_MUX_MODE_FAST_START:
{
/* send mdat atom and move buffered data into it */
/* mdat_size = accumulated (buffered data) */
ret = gst_qt_mux_send_mdat_header (qtmux, NULL, qtmux->mdat_size,
large_file, FALSE);
if (ret != GST_FLOW_OK)
return ret;
ret = gst_qt_mux_send_buffered_data (qtmux, NULL);
if (ret != GST_FLOW_OK)
return ret;
break;
}
default:
g_assert_not_reached ();
}
return ret;
/* ERRORS */
serialize_error:
{
GST_ELEMENT_ERROR (qtmux, STREAM, MUX, (NULL),
("Failed to serialize moov"));
return GST_FLOW_ERROR;
}
ftyp_error:
{
GST_ELEMENT_ERROR (qtmux, STREAM, MUX, (NULL), ("Failed to send ftyp"));
return GST_FLOW_ERROR;
}
}
static GstFlowReturn
gst_qt_mux_pad_fragment_add_buffer (GstQTMux * qtmux, GstQTPad * pad,
GstBuffer * buf, gboolean force, guint32 nsamples, gint64 dts,
guint32 delta, guint32 size, gboolean sync, gint64 pts_offset)
{
GstFlowReturn ret = GST_FLOW_OK;
/* setup if needed */
if (G_UNLIKELY (!pad->traf || force))
goto init;
flush:
/* flush pad fragment if threshold reached,
* or at new keyframe if we should be minding those in the first place */
if (G_UNLIKELY (force || (sync && pad->sync) ||
pad->fragment_duration < (gint64) delta)) {
AtomMOOF *moof;
guint64 size = 0, offset = 0;
guint8 *data = NULL;
GstBuffer *buffer;
guint i, total_size;
/* now we know where moof ends up, update offset in tfra */
if (pad->tfra)
atom_tfra_update_offset (pad->tfra, qtmux->header_size);
moof = atom_moof_new (qtmux->context, qtmux->fragment_sequence);
/* takes ownership */
atom_moof_add_traf (moof, pad->traf);
pad->traf = NULL;
atom_moof_copy_data (moof, &data, &size, &offset);
buffer = _gst_buffer_new_take_data (data, offset);
GST_LOG_OBJECT (qtmux, "writing moof size %" G_GSIZE_FORMAT,
gst_buffer_get_size (buffer));
ret = gst_qt_mux_send_buffer (qtmux, buffer, &qtmux->header_size, FALSE);
/* and actual data */
total_size = 0;
for (i = 0; i < atom_array_get_len (&pad->fragment_buffers); i++) {
total_size +=
gst_buffer_get_size (atom_array_index (&pad->fragment_buffers, i));
}
GST_LOG_OBJECT (qtmux, "writing %d buffers, total_size %d",
atom_array_get_len (&pad->fragment_buffers), total_size);
if (ret == GST_FLOW_OK)
ret = gst_qt_mux_send_mdat_header (qtmux, &qtmux->header_size, total_size,
FALSE, FALSE);
for (i = 0; i < atom_array_get_len (&pad->fragment_buffers); i++) {
if (G_LIKELY (ret == GST_FLOW_OK))
ret = gst_qt_mux_send_buffer (qtmux,
atom_array_index (&pad->fragment_buffers, i), &qtmux->header_size,
FALSE);
else
gst_buffer_unref (atom_array_index (&pad->fragment_buffers, i));
}
atom_array_clear (&pad->fragment_buffers);
atom_moof_free (moof);
qtmux->fragment_sequence++;
force = FALSE;
}
init:
if (G_UNLIKELY (!pad->traf)) {
GST_LOG_OBJECT (qtmux, "setting up new fragment");
pad->traf = atom_traf_new (qtmux->context, atom_trak_get_id (pad->trak));
atom_array_init (&pad->fragment_buffers, 512);
pad->fragment_duration = gst_util_uint64_scale (qtmux->fragment_duration,
atom_trak_get_timescale (pad->trak), 1000);
if (G_UNLIKELY (qtmux->mfra && !pad->tfra)) {
pad->tfra = atom_tfra_new (qtmux->context, atom_trak_get_id (pad->trak));
atom_mfra_add_tfra (qtmux->mfra, pad->tfra);
}
atom_traf_set_base_decode_time (pad->traf, dts);
}
/* add buffer and metadata */
atom_traf_add_samples (pad->traf, delta, size, sync, pts_offset,
pad->sync && sync);
atom_array_append (&pad->fragment_buffers, buf, 256);
pad->fragment_duration -= delta;
if (pad->tfra) {
guint32 sn = atom_traf_get_sample_num (pad->traf);
if ((sync && pad->sync) || (sn == 1 && !pad->sync))
atom_tfra_add_entry (pad->tfra, dts, sn);
}
if (G_UNLIKELY (force))
goto flush;
return ret;
}
/* Here's the clever bit of robust recording: Updating the moov
* header is done using a ping-pong scheme inside 2 blocks of size
* 'reserved_moov_size' at the start of the file, in such a way that the
* file on-disk is always valid if interrupted.
* Inside the reserved space, we have 2 pairs of free + moov atoms
* (in that order), free-A + moov-A @ offset 0 and free-B + moov-B at
* at offset "reserved_moov_size".
*
* 1. Free-A has 0 size payload, moov-A immediately after is
* active/current, and is padded with an internal Free atom to
* end at reserved_space/2. Free-B is at reserved_space/2, sized
* to cover the remaining free space (including moov-B).
* 2. We write moov-B (which is invisible inside free-B), and pad it to
* end at the end of free space. Then, we update free-A to size
* reserved_space/2 + sizeof(free-B), which hides moov-A and the
* free-B header, and makes moov-B active.
* 3. Rewrite moov-A inside free-A, with padding out to free-B.
* Change the size of free-A to make moov-A active again.
* 4. Rinse and repeat.
*
*/
static GstFlowReturn
gst_qt_mux_robust_recording_rewrite_moov (GstQTMux * qtmux)
{
GstSegment segment;
GstFlowReturn ret;
guint64 freeA_offset;
guint32 new_freeA_size;
guint64 new_moov_offset;
/* Update moov info, then seek and rewrite the MOOV atom */
gst_qt_mux_update_global_statistics (qtmux);
gst_qt_mux_configure_moov (qtmux);
gst_qt_mux_update_edit_lists (qtmux);
/* tags into file metadata */
gst_qt_mux_setup_metadata (qtmux);
/* chunks position is set relative to the first byte of the
* MDAT atom payload. Set the overall offset into the file */
atom_moov_chunks_set_offset (qtmux->moov, qtmux->header_size);
/* Calculate which moov to rewrite. qtmux->moov_pos points to
* the start of the free-A header */
freeA_offset = qtmux->moov_pos;
if (qtmux->reserved_moov_first_active) {
GST_DEBUG_OBJECT (qtmux, "Updating pong moov header");
/* After this, freeA will include itself, moovA, plus the freeB
* header */
new_freeA_size = qtmux->reserved_moov_size + 16;
} else {
GST_DEBUG_OBJECT (qtmux, "Updating ping moov header");
new_freeA_size = 8;
}
/* the moov we update is after free-A, calculate its offset */
new_moov_offset = freeA_offset + new_freeA_size;
/* Swap ping-pong cadence marker */
qtmux->reserved_moov_first_active = !qtmux->reserved_moov_first_active;
/* seek and rewrite the MOOV atom */
gst_segment_init (&segment, GST_FORMAT_BYTES);
segment.start = new_moov_offset;
gst_pad_push_event (qtmux->srcpad, gst_event_new_segment (&segment));
ret =
gst_qt_mux_send_moov (qtmux, NULL, qtmux->reserved_moov_size, FALSE,
TRUE);
if (ret != GST_FLOW_OK)
return ret;
/* Update the estimated recording space remaining, based on amount used so
* far and duration muxed so far */
if (qtmux->last_moov_size > qtmux->base_moov_size && qtmux->last_dts > 0) {
GstClockTime remain;
GstClockTime time_muxed = qtmux->last_dts;
remain =
gst_util_uint64_scale (qtmux->reserved_moov_size -
qtmux->last_moov_size, time_muxed,
qtmux->last_moov_size - qtmux->base_moov_size);
/* Always under-estimate slightly, so users
* have time to stop muxing before we run out */
if (remain < GST_SECOND / 2)
remain = 0;
else
remain -= GST_SECOND / 2;
GST_INFO_OBJECT (qtmux,
"Reserved %u header bytes. Used %u in %" GST_TIME_FORMAT
". Remaining now %u or approx %" G_GUINT64_FORMAT " ns\n",
qtmux->reserved_moov_size, qtmux->last_moov_size,
GST_TIME_ARGS (qtmux->last_dts),
qtmux->reserved_moov_size - qtmux->last_moov_size, remain);
GST_OBJECT_LOCK (qtmux);
qtmux->reserved_duration_remaining = remain;
qtmux->muxed_since_last_update = 0;
GST_DEBUG_OBJECT (qtmux, "reserved remaining duration now %"
G_GUINT64_FORMAT, qtmux->reserved_duration_remaining);
GST_OBJECT_UNLOCK (qtmux);
}
/* Now update the moov-A size. Don't pass offset, since we don't need
* send_free_atom() to seek for us - all our callers seek back to
* where they need after this, or they don't need it */
gst_segment_init (&segment, GST_FORMAT_BYTES);
segment.start = freeA_offset;
gst_pad_push_event (qtmux->srcpad, gst_event_new_segment (&segment));
ret = gst_qt_mux_send_free_atom (qtmux, NULL, new_freeA_size, TRUE);
return ret;
}
static GstFlowReturn
gst_qt_mux_robust_recording_update (GstQTMux * qtmux, GstClockTime position)
{
GstSegment segment;
GstFlowReturn flow_ret;
guint64 mdat_offset = qtmux->mdat_pos + 16 + qtmux->mdat_size;
GST_OBJECT_LOCK (qtmux);
/* Update the offset of how much we've muxed, so the
* report of remaining space keeps counting down */
if (position > qtmux->last_moov_update &&
position - qtmux->last_moov_update > qtmux->muxed_since_last_update) {
GST_LOG_OBJECT (qtmux,
"Muxed time %" G_GUINT64_FORMAT " since last moov update",
qtmux->muxed_since_last_update);
qtmux->muxed_since_last_update = position - qtmux->last_moov_update;
}
/* Next, check if we're supposed to send periodic moov updates downstream */
if (qtmux->reserved_moov_update_period == GST_CLOCK_TIME_NONE) {
GST_OBJECT_UNLOCK (qtmux);
return GST_FLOW_OK;
}
/* Update if position is > the threshold or there's been no update yet */
if (qtmux->last_moov_update != GST_CLOCK_TIME_NONE &&
(position <= qtmux->last_moov_update ||
(position - qtmux->last_moov_update) <
qtmux->reserved_moov_update_period)) {
GST_OBJECT_UNLOCK (qtmux);
return GST_FLOW_OK; /* No update needed yet */
}
qtmux->last_moov_update = position;
GST_OBJECT_UNLOCK (qtmux);
GST_DEBUG_OBJECT (qtmux, "Update moov atom, position %" GST_TIME_FORMAT
" mdat starts @ %" G_GUINT64_FORMAT " we were a %" G_GUINT64_FORMAT,
GST_TIME_ARGS (position), qtmux->mdat_pos, mdat_offset);
flow_ret = gst_qt_mux_robust_recording_rewrite_moov (qtmux);
if (G_UNLIKELY (flow_ret != GST_FLOW_OK))
return flow_ret;
/* Seek back to previous position */
gst_segment_init (&segment, GST_FORMAT_BYTES);
segment.start = mdat_offset;
gst_pad_push_event (qtmux->srcpad, gst_event_new_segment (&segment));
return flow_ret;
}
static GstFlowReturn
gst_qt_mux_register_and_push_sample (GstQTMux * qtmux, GstQTPad * pad,
GstBuffer * buffer, gboolean is_last_buffer, guint nsamples,
gint64 last_dts, gint64 scaled_duration, guint sample_size,
guint64 chunk_offset, gboolean sync, gboolean do_pts, gint64 pts_offset)
{
GstFlowReturn ret = GST_FLOW_OK;
/* note that a new chunk is started each time (not fancy but works) */
if (qtmux->moov_recov_file) {
if (!atoms_recov_write_trak_samples (qtmux->moov_recov_file, pad->trak,
nsamples, (gint32) scaled_duration, sample_size, chunk_offset, sync,
do_pts, pts_offset)) {
GST_WARNING_OBJECT (qtmux, "Failed to write sample information to "
"recovery file, disabling recovery");
fclose (qtmux->moov_recov_file);
qtmux->moov_recov_file = NULL;
}
}
switch (qtmux->mux_mode) {
case GST_QT_MUX_MODE_ROBUST_RECORDING_PREFILL:{
const TrakBufferEntryInfo *sample_entry;
guint64 block_idx = prefill_get_block_index (qtmux, pad);
if (block_idx >= pad->samples->len) {
GST_ELEMENT_ERROR (qtmux, STREAM, MUX, (NULL),
("Unexpected sample %" G_GUINT64_FORMAT ", expected up to %u",
block_idx, pad->samples->len));
gst_buffer_unref (buffer);
return GST_FLOW_ERROR;
}
/* Check if all values are as expected */
sample_entry =
&g_array_index (pad->samples, TrakBufferEntryInfo, block_idx);
/* Allow +/- 1 difference for the scaled_duration to allow
* for some rounding errors
*/
if (sample_entry->nsamples != nsamples
|| ABSDIFF (sample_entry->delta, scaled_duration) > 1
|| sample_entry->size != sample_size
|| sample_entry->chunk_offset != chunk_offset
|| sample_entry->pts_offset != pts_offset
|| sample_entry->sync != sync) {
GST_ELEMENT_ERROR (qtmux, STREAM, MUX, (NULL),
("Unexpected values in sample %" G_GUINT64_FORMAT,
pad->sample_offset + 1));
gst_buffer_unref (buffer);
return GST_FLOW_ERROR;
}
ret = gst_qt_mux_send_buffer (qtmux, buffer, &qtmux->mdat_size, TRUE);
break;
}
case GST_QT_MUX_MODE_MOOV_AT_END:
case GST_QT_MUX_MODE_FAST_START:
case GST_QT_MUX_MODE_ROBUST_RECORDING:
atom_trak_add_samples (pad->trak, nsamples, (gint32) scaled_duration,
sample_size, chunk_offset, sync, pts_offset);
ret = gst_qt_mux_send_buffer (qtmux, buffer, &qtmux->mdat_size, TRUE);
/* Check if it's time to re-write the headers in robust-recording mode */
if (ret == GST_FLOW_OK
&& qtmux->mux_mode == GST_QT_MUX_MODE_ROBUST_RECORDING)
ret = gst_qt_mux_robust_recording_update (qtmux, pad->total_duration);
break;
case GST_QT_MUX_MODE_FRAGMENTED:
case GST_QT_MUX_MODE_FRAGMENTED_STREAMABLE:
/* ensure that always sync samples are marked as such */
ret = gst_qt_mux_pad_fragment_add_buffer (qtmux, pad, buffer,
is_last_buffer, nsamples, last_dts, (gint32) scaled_duration,
sample_size, !pad->sync || sync, pts_offset);
break;
}
return ret;
}
static void
gst_qt_mux_register_buffer_in_chunk (GstQTMux * qtmux, GstQTPad * pad,
guint buffer_size, GstClockTime duration)
{
/* not that much happens here,
* but updating any of this very likely needs to happen all in sync,
* unless there is a very good reason not to */
/* for computing the avg bitrate */
pad->total_bytes += buffer_size;
pad->total_duration += duration;
/* for keeping track of where we are in chunk;
* ensures that data really is located as recorded in atoms */
qtmux->current_chunk_size += buffer_size;
qtmux->current_chunk_duration += duration;
}
static GstFlowReturn
gst_qt_mux_check_and_update_timecode (GstQTMux * qtmux, GstQTPad * pad,
GstBuffer * buf, GstFlowReturn ret)
{
GstVideoTimeCodeMeta *tc_meta;
GstVideoTimeCode *tc;
GstBuffer *tc_buf;
gsize szret;
guint32 frames_since_daily_jam;
GstQTMuxClass *qtmux_klass = (GstQTMuxClass *) (G_OBJECT_GET_CLASS (qtmux));
if (qtmux_klass->format != GST_QT_MUX_FORMAT_QT)
return ret;
if (buf == NULL || (pad->tc_trak != NULL && pad->tc_pos == -1))
return ret;
tc_meta = gst_buffer_get_video_time_code_meta (buf);
if (!tc_meta)
return ret;
tc = &tc_meta->tc;
/* This means we never got a timecode before */
if (pad->first_tc == NULL) {
#ifndef GST_DISABLE_GST_DEBUG
gchar *tc_str = gst_video_time_code_to_string (tc);
GST_DEBUG_OBJECT (qtmux, "Found first timecode %s", tc_str);
g_free (tc_str);
#endif
g_assert (pad->tc_trak == NULL);
pad->first_tc = gst_video_time_code_copy (tc);
/* If frames are out of order, the frame we're currently getting might
* not be the first one. Just write a 0 timecode for now and wait
* until we receive a timecode that's lower than the current one */
if (pad->is_out_of_order) {
pad->first_pts = GST_BUFFER_PTS (buf);
frames_since_daily_jam = 0;
/* Position to rewrite */
pad->tc_pos = qtmux->mdat_size;
} else {
frames_since_daily_jam =
gst_video_time_code_frames_since_daily_jam (pad->first_tc);
frames_since_daily_jam = GUINT32_TO_BE (frames_since_daily_jam);
}
/* Write the timecode trak now */
pad->tc_trak = atom_trak_new (qtmux->context);
atom_moov_add_trak (qtmux->moov, pad->tc_trak);
pad->trak->tref = atom_tref_new (FOURCC_tmcd);
atom_tref_add_entry (pad->trak->tref, pad->tc_trak->tkhd.track_ID);
atom_trak_set_timecode_type (pad->tc_trak, qtmux->context,
pad->trak->mdia.mdhd.time_info.timescale, pad->first_tc);
tc_buf = gst_buffer_new_allocate (NULL, 4, NULL);
szret = gst_buffer_fill (tc_buf, 0, &frames_since_daily_jam, 4);
g_assert (szret == 4);
atom_trak_add_samples (pad->tc_trak, 1, 1, 4, qtmux->mdat_size, FALSE, 0);
ret = gst_qt_mux_send_buffer (qtmux, tc_buf, &qtmux->mdat_size, TRUE);
/* Need to reset the current chunk (of the previous pad) here because
* some other data was written now above, and the pad has to start a
* new chunk now */
qtmux->current_chunk_offset = -1;
qtmux->current_chunk_size = 0;
qtmux->current_chunk_duration = 0;
} else if (qtmux->mux_mode == GST_QT_MUX_MODE_ROBUST_RECORDING_PREFILL) {
frames_since_daily_jam =
gst_video_time_code_frames_since_daily_jam (pad->first_tc);
frames_since_daily_jam = GUINT32_TO_BE (frames_since_daily_jam);
tc_buf = gst_buffer_new_allocate (NULL, 4, NULL);
szret = gst_buffer_fill (tc_buf, 0, &frames_since_daily_jam, 4);
g_assert (szret == 4);
ret = gst_qt_mux_send_buffer (qtmux, tc_buf, &qtmux->mdat_size, TRUE);
pad->tc_pos = -1;
qtmux->current_chunk_offset = -1;
qtmux->current_chunk_size = 0;
qtmux->current_chunk_duration = 0;
} else if (pad->is_out_of_order) {
/* Check for a lower timecode than the one stored */
g_assert (pad->tc_trak != NULL);
if (GST_BUFFER_DTS (buf) <= pad->first_pts) {
if (gst_video_time_code_compare (tc, pad->first_tc) == -1) {
gst_video_time_code_free (pad->first_tc);
pad->first_tc = gst_video_time_code_copy (tc);
}
} else {
guint64 bk_size = qtmux->mdat_size;
GstSegment segment;
/* If this frame's DTS is after the first PTS received, it means
* we've already received the first frame to be presented. Otherwise
* the decoder would need to go back in time */
gst_qt_mux_update_timecode (qtmux, pad);
/* Reset writing position */
gst_segment_init (&segment, GST_FORMAT_BYTES);
segment.start = bk_size;
gst_pad_push_event (qtmux->srcpad, gst_event_new_segment (&segment));
}
}
return ret;
}
/*
* Here we push the buffer and update the tables in the track atoms
*/
static GstFlowReturn
gst_qt_mux_add_buffer (GstQTMux * qtmux, GstQTPad * pad, GstBuffer * buf)
{
GstBuffer *last_buf = NULL;
GstClockTime duration;
guint nsamples, sample_size;
guint64 chunk_offset;
gint64 last_dts, scaled_duration;
gint64 pts_offset = 0;
gboolean sync = FALSE;
GstFlowReturn ret = GST_FLOW_OK;
guint buffer_size;
if (!pad->fourcc)
goto not_negotiated;
/* if this pad has a prepare function, call it */
if (pad->prepare_buf_func != NULL) {
GstBuffer *new_buf;
new_buf = pad->prepare_buf_func (pad, buf, qtmux);
if (buf && !new_buf)
return GST_FLOW_OK;
buf = new_buf;
}
ret = gst_qt_mux_check_and_update_timecode (qtmux, pad, buf, ret);
if (ret != GST_FLOW_OK) {
if (buf)
gst_buffer_unref (buf);
return ret;
}
last_buf = pad->last_buf;
pad->last_buf = buf;
if (last_buf == NULL) {
#ifndef GST_DISABLE_GST_DEBUG
if (buf == NULL) {
GST_DEBUG_OBJECT (qtmux, "Pad %s has no previous buffer stored and "
"received NULL buffer, doing nothing",
GST_PAD_NAME (pad->collect.pad));
} else {
GST_LOG_OBJECT (qtmux,
"Pad %s has no previous buffer stored, storing now",
GST_PAD_NAME (pad->collect.pad));
}
#endif
goto exit;
}
if (!GST_BUFFER_PTS_IS_VALID (last_buf))
goto no_pts;
/* if this is the first buffer, store the timestamp */
if (G_UNLIKELY (pad->first_ts == GST_CLOCK_TIME_NONE)) {
if (GST_BUFFER_PTS_IS_VALID (last_buf)) {
pad->first_ts = GST_BUFFER_PTS (last_buf);
} else if (GST_BUFFER_DTS_IS_VALID (last_buf)) {
pad->first_ts = GST_BUFFER_DTS (last_buf);
}
if (GST_BUFFER_DTS_IS_VALID (last_buf)) {
pad->first_dts = pad->last_dts = GST_BUFFER_DTS (last_buf);
} else if (GST_BUFFER_PTS_IS_VALID (last_buf)) {
pad->first_dts = pad->last_dts = GST_BUFFER_PTS (last_buf);
}
if (GST_CLOCK_TIME_IS_VALID (pad->first_ts)) {
GST_DEBUG ("setting first_ts to %" G_GUINT64_FORMAT, pad->first_ts);
} else {
GST_WARNING_OBJECT (qtmux, "First buffer for pad %s has no timestamp, "
"using 0 as first timestamp", GST_PAD_NAME (pad->collect.pad));
pad->first_ts = pad->first_dts = 0;
}
GST_DEBUG_OBJECT (qtmux, "Stored first timestamp for pad %s %"
GST_TIME_FORMAT, GST_PAD_NAME (pad->collect.pad),
GST_TIME_ARGS (pad->first_ts));
}
if (buf && GST_CLOCK_TIME_IS_VALID (GST_BUFFER_DTS (buf)) &&
GST_CLOCK_TIME_IS_VALID (GST_BUFFER_DTS (last_buf)) &&
GST_BUFFER_DTS (buf) < GST_BUFFER_DTS (last_buf)) {
GST_ERROR ("decreasing DTS value %" GST_TIME_FORMAT " < %" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_DTS (buf)),
GST_TIME_ARGS (GST_BUFFER_DTS (last_buf)));
pad->last_buf = buf = gst_buffer_make_writable (buf);
GST_BUFFER_DTS (buf) = GST_BUFFER_DTS (last_buf);
}
buffer_size = gst_buffer_get_size (last_buf);
if (qtmux->mux_mode == GST_QT_MUX_MODE_ROBUST_RECORDING_PREFILL) {
guint required_buffer_size = prefill_get_sample_size (qtmux, pad);
guint fill_size = required_buffer_size - buffer_size;
GstMemory *mem;
GstMapInfo map;
if (required_buffer_size < buffer_size) {
GST_ELEMENT_ERROR (qtmux, STREAM, MUX, (NULL),
("Sample size %u bigger than expected maximum %u", buffer_size,
required_buffer_size));
goto bail;
}
if (fill_size > 0) {
GST_DEBUG_OBJECT (qtmux,
"Padding buffer by %u bytes to reach required %u bytes", fill_size,
required_buffer_size);
mem = gst_allocator_alloc (NULL, fill_size, NULL);
gst_memory_map (mem, &map, GST_MAP_WRITE);
memset (map.data, 0, map.size);
gst_memory_unmap (mem, &map);
last_buf = gst_buffer_make_writable (last_buf);
gst_buffer_append_memory (last_buf, mem);
buffer_size = required_buffer_size;
}
}
/* duration actually means time delta between samples, so we calculate
* the duration based on the difference in DTS or PTS, falling back
* to DURATION if the other two don't exist, such as with the last
* sample before EOS. Or use 0 if nothing else is available */
if (GST_BUFFER_DURATION_IS_VALID (last_buf))
duration = GST_BUFFER_DURATION (last_buf);
else
duration = 0;
if (!pad->sparse) {
if (buf && GST_BUFFER_DTS_IS_VALID (buf)
&& GST_BUFFER_DTS_IS_VALID (last_buf))
duration = GST_BUFFER_DTS (buf) - GST_BUFFER_DTS (last_buf);
else if (buf && GST_BUFFER_PTS_IS_VALID (buf)
&& GST_BUFFER_PTS_IS_VALID (last_buf))
duration = GST_BUFFER_PTS (buf) - GST_BUFFER_PTS (last_buf);
}
if (qtmux->current_pad != pad || qtmux->current_chunk_offset == -1) {
GST_DEBUG_OBJECT (qtmux,
"Switching to next chunk for pad %s:%s: offset %" G_GUINT64_FORMAT
", size %" G_GUINT64_FORMAT ", duration %" GST_TIME_FORMAT,
GST_DEBUG_PAD_NAME (pad->collect.pad), qtmux->current_chunk_offset,
qtmux->current_chunk_size,
GST_TIME_ARGS (qtmux->current_chunk_duration));
qtmux->current_pad = pad;
if (qtmux->current_chunk_offset == -1)
qtmux->current_chunk_offset = qtmux->mdat_size;
else
qtmux->current_chunk_offset += qtmux->current_chunk_size;
qtmux->current_chunk_size = 0;
qtmux->current_chunk_duration = 0;
}
last_dts = gst_util_uint64_scale_round (pad->last_dts,
atom_trak_get_timescale (pad->trak), GST_SECOND);
/* fragments only deal with 1 buffer == 1 chunk (== 1 sample) */
if (pad->sample_size && !qtmux->fragment_sequence) {
GstClockTime expected_timestamp;
/* Constant size packets: usually raw audio (with many samples per
buffer (= chunk)), but can also be fixed-packet-size codecs like ADPCM
*/
sample_size = pad->sample_size;
if (buffer_size % sample_size != 0)
goto fragmented_sample;
/* note: qt raw audio storage warps it implicitly into a timewise
* perfect stream, discarding buffer times.
* If the difference between the current PTS and the expected one
* becomes too big, we error out: there was a gap and we have no way to
* represent that, causing A/V sync to be off */
expected_timestamp =
gst_util_uint64_scale (pad->sample_offset, GST_SECOND,
atom_trak_get_timescale (pad->trak)) + pad->first_ts;
if (ABSDIFF (GST_BUFFER_DTS_OR_PTS (last_buf),
expected_timestamp) > qtmux->max_raw_audio_drift)
goto raw_audio_timestamp_drift;
if (GST_BUFFER_DURATION (last_buf) != GST_CLOCK_TIME_NONE) {
nsamples = gst_util_uint64_scale_round (GST_BUFFER_DURATION (last_buf),
atom_trak_get_timescale (pad->trak), GST_SECOND);
duration = GST_BUFFER_DURATION (last_buf);
} else {
nsamples = buffer_size / sample_size;
duration =
gst_util_uint64_scale_round (nsamples, GST_SECOND,
atom_trak_get_timescale (pad->trak));
}
/* timescale = samplerate */
scaled_duration = 1;
pad->last_dts =
pad->first_dts + gst_util_uint64_scale_round (pad->sample_offset +
nsamples, GST_SECOND, atom_trak_get_timescale (pad->trak));
} else {
nsamples = 1;
sample_size = buffer_size;
if (!pad->sparse && ((buf && GST_BUFFER_DTS_IS_VALID (buf))
|| GST_BUFFER_DTS_IS_VALID (last_buf))) {
gint64 scaled_dts;
if (buf && GST_BUFFER_DTS_IS_VALID (buf)) {
pad->last_dts = GST_BUFFER_DTS (buf);
} else {
pad->last_dts = GST_BUFFER_DTS (last_buf) + duration;
}
if ((gint64) (pad->last_dts) < 0) {
scaled_dts = -gst_util_uint64_scale_round (-pad->last_dts,
atom_trak_get_timescale (pad->trak), GST_SECOND);
} else {
scaled_dts = gst_util_uint64_scale_round (pad->last_dts,
atom_trak_get_timescale (pad->trak), GST_SECOND);
}
scaled_duration = scaled_dts - last_dts;
last_dts = scaled_dts;
} else {
/* first convert intended timestamp (in GstClockTime resolution) to
* trak timescale, then derive delta;
* this ensures sums of (scale)delta add up to converted timestamp,
* which only deviates at most 1/scale from timestamp itself */
scaled_duration = gst_util_uint64_scale_round (pad->last_dts + duration,
atom_trak_get_timescale (pad->trak), GST_SECOND) - last_dts;
pad->last_dts += duration;
}
}
gst_qt_mux_register_buffer_in_chunk (qtmux, pad, buffer_size, duration);
chunk_offset = qtmux->current_chunk_offset;
GST_LOG_OBJECT (qtmux,
"Pad (%s) dts updated to %" GST_TIME_FORMAT,
GST_PAD_NAME (pad->collect.pad), GST_TIME_ARGS (pad->last_dts));
GST_LOG_OBJECT (qtmux,
"Adding %d samples to track, duration: %" G_GUINT64_FORMAT
" size: %" G_GUINT32_FORMAT " chunk offset: %" G_GUINT64_FORMAT,
nsamples, scaled_duration, sample_size, chunk_offset);
/* might be a sync sample */
if (pad->sync &&
!GST_BUFFER_FLAG_IS_SET (last_buf, GST_BUFFER_FLAG_DELTA_UNIT)) {
GST_LOG_OBJECT (qtmux, "Adding new sync sample entry for track of pad %s",
GST_PAD_NAME (pad->collect.pad));
sync = TRUE;
}
if (GST_BUFFER_DTS_IS_VALID (last_buf)) {
last_dts = gst_util_uint64_scale_round (GST_BUFFER_DTS (last_buf),
atom_trak_get_timescale (pad->trak), GST_SECOND);
pts_offset =
(gint64) (gst_util_uint64_scale_round (GST_BUFFER_PTS (last_buf),
atom_trak_get_timescale (pad->trak), GST_SECOND) - last_dts);
} else {
pts_offset = 0;
last_dts = gst_util_uint64_scale_round (GST_BUFFER_PTS (last_buf),
atom_trak_get_timescale (pad->trak), GST_SECOND);
}
GST_DEBUG ("dts: %" GST_TIME_FORMAT " pts: %" GST_TIME_FORMAT
" timebase_dts: %d pts_offset: %d",
GST_TIME_ARGS (GST_BUFFER_DTS (last_buf)),
GST_TIME_ARGS (GST_BUFFER_PTS (last_buf)),
(int) (last_dts), (int) (pts_offset));
if (GST_CLOCK_TIME_IS_VALID (duration)
&& (qtmux->current_chunk_duration > qtmux->longest_chunk
|| !GST_CLOCK_TIME_IS_VALID (qtmux->longest_chunk))) {
GST_DEBUG_OBJECT (qtmux,
"New longest chunk found: %" GST_TIME_FORMAT ", pad %s",
GST_TIME_ARGS (qtmux->current_chunk_duration),
GST_PAD_NAME (pad->collect.pad));
qtmux->longest_chunk = qtmux->current_chunk_duration;
}
if (qtmux->mux_mode == GST_QT_MUX_MODE_ROBUST_RECORDING_PREFILL) {
const TrakBufferEntryInfo *sample_entry;
guint64 block_idx = prefill_get_block_index (qtmux, pad);
if (block_idx >= pad->samples->len) {
GST_ELEMENT_ERROR (qtmux, STREAM, MUX, (NULL),
("Unexpected sample %" G_GUINT64_FORMAT ", expected up to %u",
block_idx, pad->samples->len));
goto bail;
}
/* Check if all values are as expected */
sample_entry =
&g_array_index (pad->samples, TrakBufferEntryInfo, block_idx);
if (chunk_offset < sample_entry->chunk_offset) {
guint fill_size = sample_entry->chunk_offset - chunk_offset;
GstBuffer *fill_buf;
fill_buf = gst_buffer_new_allocate (NULL, fill_size, NULL);
gst_buffer_memset (fill_buf, 0, 0, fill_size);
ret = gst_qt_mux_send_buffer (qtmux, fill_buf, &qtmux->mdat_size, TRUE);
if (ret != GST_FLOW_OK)
goto bail;
qtmux->current_chunk_offset = chunk_offset = sample_entry->chunk_offset;
qtmux->current_chunk_size = buffer_size;
qtmux->current_chunk_duration = duration;
} else if (chunk_offset != sample_entry->chunk_offset) {
GST_ELEMENT_ERROR (qtmux, STREAM, MUX, (NULL),
("Unexpected chunk offset %" G_GUINT64_FORMAT ", expected up to %"
G_GUINT64_FORMAT, chunk_offset, sample_entry->chunk_offset));
goto bail;
}
}
/* now we go and register this buffer/sample all over */
ret = gst_qt_mux_register_and_push_sample (qtmux, pad, last_buf,
buf == NULL, nsamples, last_dts, scaled_duration, sample_size,
chunk_offset, sync, TRUE, pts_offset);
pad->sample_offset += nsamples;
/* if this is sparse and we have a next buffer, check if there is any gap
* between them to insert an empty sample */
if (pad->sparse && buf) {
if (pad->create_empty_buffer) {
GstBuffer *empty_buf;
gint64 empty_duration =
GST_BUFFER_PTS (buf) - (GST_BUFFER_PTS (last_buf) + duration);
gint64 empty_duration_scaled;
guint empty_size;
empty_buf = pad->create_empty_buffer (pad, empty_duration);
pad->last_dts = GST_BUFFER_PTS (buf);
empty_duration_scaled = gst_util_uint64_scale_round (pad->last_dts,
atom_trak_get_timescale (pad->trak), GST_SECOND)
- (last_dts + scaled_duration);
empty_size = gst_buffer_get_size (empty_buf);
gst_qt_mux_register_buffer_in_chunk (qtmux, pad, empty_size,
empty_duration);
ret =
gst_qt_mux_register_and_push_sample (qtmux, pad, empty_buf, FALSE, 1,
last_dts + scaled_duration, empty_duration_scaled,
empty_size, chunk_offset, sync, TRUE, 0);
} else {
/* our only case currently is tx3g subtitles, so there is no reason to fill this yet */
g_assert_not_reached ();
GST_WARNING_OBJECT (qtmux,
"no empty buffer creation function found for pad %s",
GST_PAD_NAME (pad->collect.pad));
}
}
exit:
return ret;
/* ERRORS */
bail:
{
gst_buffer_unref (last_buf);
return GST_FLOW_ERROR;
}
fragmented_sample:
{
GST_ELEMENT_ERROR (qtmux, STREAM, MUX, (NULL),
("Audio buffer contains fragmented sample."));
goto bail;
}
raw_audio_timestamp_drift:
{
/* TODO: Could in theory be implemented with edit lists */
GST_ELEMENT_ERROR (qtmux, STREAM, MUX, (NULL),
("Audio stream timestamps are drifting (got %" GST_TIME_FORMAT
", expected %" GST_TIME_FORMAT "). This is not supported yet!",
GST_TIME_ARGS (GST_BUFFER_DTS_OR_PTS (last_buf)),
GST_TIME_ARGS (gst_util_uint64_scale (pad->sample_offset,
GST_SECOND,
atom_trak_get_timescale (pad->trak)) + pad->first_ts)));
goto bail;
}
no_pts:
{
GST_ELEMENT_ERROR (qtmux, STREAM, MUX, (NULL), ("Buffer has no PTS."));
goto bail;
}
not_negotiated:
{
GST_ELEMENT_ERROR (qtmux, CORE, NEGOTIATION, (NULL),
("format wasn't negotiated before buffer flow on pad %s",
GST_PAD_NAME (pad->collect.pad)));
if (buf)
gst_buffer_unref (buf);
return GST_FLOW_NOT_NEGOTIATED;
}
}
/*
* DTS running time can be negative. There is no way to represent that in
* MP4 however, thus we need to offset DTS so that it starts from 0.
*/
static void
gst_qt_pad_adjust_buffer_dts (GstQTMux * qtmux, GstQTPad * pad,
GstCollectData * cdata, GstBuffer ** buf)
{
GstClockTime pts;
gint64 dts;
pts = GST_BUFFER_PTS (*buf);
dts = GST_COLLECT_PADS_DTS (cdata);
GST_LOG_OBJECT (qtmux, "selected pad %s with PTS %" GST_TIME_FORMAT
" and DTS %" GST_STIME_FORMAT, GST_PAD_NAME (cdata->pad),
GST_TIME_ARGS (pts), GST_STIME_ARGS (dts));
if (!GST_CLOCK_TIME_IS_VALID (pad->dts_adjustment)) {
if (GST_CLOCK_STIME_IS_VALID (dts) && dts < 0)
pad->dts_adjustment = -dts;
else
pad->dts_adjustment = 0;
}
if (pad->dts_adjustment > 0) {
*buf = gst_buffer_make_writable (*buf);
dts += pad->dts_adjustment;
if (GST_CLOCK_TIME_IS_VALID (pts))
pts += pad->dts_adjustment;
if (GST_CLOCK_STIME_IS_VALID (dts) && dts < 0) {
GST_WARNING_OBJECT (pad, "Decreasing DTS.");
dts = 0;
}
if (pts < dts) {
GST_WARNING_OBJECT (pad, "DTS is bigger then PTS");
pts = dts;
}
GST_BUFFER_PTS (*buf) = pts;
GST_BUFFER_DTS (*buf) = dts;
GST_LOG_OBJECT (qtmux, "time adjusted to PTS %" GST_TIME_FORMAT
" and DTS %" GST_TIME_FORMAT, GST_TIME_ARGS (pts), GST_TIME_ARGS (dts));
}
}
static GstQTPad *
find_best_pad (GstQTMux * qtmux, GstCollectPads * pads)
{
GSList *walk;
GstQTPad *best_pad = NULL;
if (qtmux->mux_mode == GST_QT_MUX_MODE_ROBUST_RECORDING_PREFILL) {
guint64 smallest_offset = G_MAXUINT64;
guint64 chunk_offset = 0;
for (walk = qtmux->collect->data; walk; walk = g_slist_next (walk)) {
GstCollectData *cdata = (GstCollectData *) walk->data;
GstQTPad *qtpad = (GstQTPad *) cdata;
const TrakBufferEntryInfo *sample_entry;
guint64 block_idx, current_block_idx;
guint64 chunk_offset_offset = 0;
GstBuffer *tmp_buf =
gst_collect_pads_peek (pads, (GstCollectData *) qtpad);
/* Check for EOS pads and just skip them */
if (!tmp_buf && !qtpad->last_buf && (!qtpad->raw_audio_adapter
|| gst_adapter_available (qtpad->raw_audio_adapter) == 0))
continue;
if (tmp_buf)
gst_buffer_unref (tmp_buf);
/* Find the exact offset where the next sample of this track is supposed
* to be written at */
block_idx = current_block_idx = prefill_get_block_index (qtmux, qtpad);
sample_entry =
&g_array_index (qtpad->samples, TrakBufferEntryInfo, block_idx);
while (block_idx > 0) {
const TrakBufferEntryInfo *tmp =
&g_array_index (qtpad->samples, TrakBufferEntryInfo, block_idx - 1);
if (tmp->chunk_offset != sample_entry->chunk_offset)
break;
chunk_offset_offset += tmp->size * tmp->nsamples;
block_idx--;
}
/* Except for the previously selected pad being EOS we always have
* qtmux->current_chunk_offset + qtmux->current_chunk_size
* ==
* sample_entry->chunk_offset + chunk_offset_offset
* for the best pad. Instead of checking that, we just return the
* pad that has the smallest offset for the next to-be-written sample.
*/
if (sample_entry->chunk_offset + chunk_offset_offset < smallest_offset) {
smallest_offset = sample_entry->chunk_offset + chunk_offset_offset;
best_pad = qtpad;
chunk_offset = sample_entry->chunk_offset;
}
}
if (chunk_offset != qtmux->current_chunk_offset) {
qtmux->current_pad = NULL;
}
return best_pad;
}
if (qtmux->current_pad && (qtmux->interleave_bytes != 0
|| qtmux->interleave_time != 0) && (qtmux->interleave_bytes == 0
|| qtmux->current_chunk_size <= qtmux->interleave_bytes)
&& (qtmux->interleave_time == 0
|| qtmux->current_chunk_duration <= qtmux->interleave_time)
&& qtmux->mux_mode != GST_QT_MUX_MODE_FRAGMENTED
&& qtmux->mux_mode != GST_QT_MUX_MODE_FRAGMENTED_STREAMABLE) {
GstBuffer *tmp_buf =
gst_collect_pads_peek (pads, (GstCollectData *) qtmux->current_pad);
if (tmp_buf || qtmux->current_pad->last_buf) {
best_pad = qtmux->current_pad;
if (tmp_buf)
gst_buffer_unref (tmp_buf);
GST_DEBUG_OBJECT (qtmux, "Reusing pad %s:%s",
GST_DEBUG_PAD_NAME (best_pad->collect.pad));
}
} else if (qtmux->collect->data->next) {
/* Only switch pads if we have more than one, otherwise
* we can just put everything into a single chunk and save
* a few bytes of offsets
*/
if (qtmux->current_pad)
GST_DEBUG_OBJECT (qtmux, "Switching from pad %s:%s",
GST_DEBUG_PAD_NAME (qtmux->current_pad->collect.pad));
best_pad = qtmux->current_pad = NULL;
}
if (!best_pad) {
GstClockTime best_time = GST_CLOCK_TIME_NONE;
for (walk = qtmux->collect->data; walk; walk = g_slist_next (walk)) {
GstCollectData *cdata = (GstCollectData *) walk->data;
GstQTPad *qtpad = (GstQTPad *) cdata;
GstBuffer *tmp_buf;
GstClockTime timestamp;
tmp_buf = gst_collect_pads_peek (pads, cdata);
if (!tmp_buf) {
/* This one is newly EOS now, finish it for real */
if (qtpad->last_buf) {
timestamp = GST_BUFFER_DTS_OR_PTS (qtpad->last_buf);
} else {
continue;
}
} else {
if (qtpad->last_buf)
timestamp = GST_BUFFER_DTS_OR_PTS (qtpad->last_buf);
else
timestamp = GST_BUFFER_DTS_OR_PTS (tmp_buf);
}
if (best_pad == NULL ||
!GST_CLOCK_TIME_IS_VALID (best_time) || timestamp < best_time) {
best_pad = qtpad;
best_time = timestamp;
}
if (tmp_buf)
gst_buffer_unref (tmp_buf);
}
if (best_pad) {
GST_DEBUG_OBJECT (qtmux, "Choosing pad %s:%s",
GST_DEBUG_PAD_NAME (best_pad->collect.pad));
} else {
GST_DEBUG_OBJECT (qtmux, "No best pad: EOS");
}
}
return best_pad;
}
static GstFlowReturn
gst_qt_mux_collected (GstCollectPads * pads, gpointer user_data)
{
GstFlowReturn ret = GST_FLOW_OK;
GstQTMux *qtmux = GST_QT_MUX_CAST (user_data);
GstQTPad *best_pad = NULL;
if (G_UNLIKELY (qtmux->state == GST_QT_MUX_STATE_STARTED)) {
if ((ret = gst_qt_mux_start_file (qtmux)) != GST_FLOW_OK)
return ret;
qtmux->state = GST_QT_MUX_STATE_DATA;
}
if (G_UNLIKELY (qtmux->state == GST_QT_MUX_STATE_EOS))
return GST_FLOW_EOS;
best_pad = find_best_pad (qtmux, pads);
/* clipping already converted to running time */
if (best_pad != NULL) {
GstBuffer *buf = NULL;
if (qtmux->mux_mode != GST_QT_MUX_MODE_ROBUST_RECORDING_PREFILL ||
best_pad->raw_audio_adapter == NULL ||
best_pad->raw_audio_adapter_pts == GST_CLOCK_TIME_NONE)
buf = gst_collect_pads_pop (pads, (GstCollectData *) best_pad);
g_assert (buf || best_pad->last_buf || (best_pad->raw_audio_adapter
&& gst_adapter_available (best_pad->raw_audio_adapter) > 0));
if (buf)
gst_qt_pad_adjust_buffer_dts (qtmux, best_pad,
(GstCollectData *) best_pad, &buf);
ret = gst_qt_mux_add_buffer (qtmux, best_pad, buf);
} else {
qtmux->state = GST_QT_MUX_STATE_EOS;
ret = gst_qt_mux_stop_file (qtmux);
if (ret == GST_FLOW_OK) {
GST_DEBUG_OBJECT (qtmux, "Pushing eos");
gst_pad_push_event (qtmux->srcpad, gst_event_new_eos ());
ret = GST_FLOW_EOS;
} else {
GST_WARNING_OBJECT (qtmux, "Failed to stop file: %s",
gst_flow_get_name (ret));
}
}
return ret;
}
static gboolean
check_field (GQuark field_id, const GValue * value, gpointer user_data)
{
GstStructure *structure = (GstStructure *) user_data;
const GValue *other = gst_structure_id_get_value (structure, field_id);
if (other == NULL)
return FALSE;
return gst_value_compare (value, other) == GST_VALUE_EQUAL;
}
static gboolean
gst_qtmux_caps_is_subset_full (GstQTMux * qtmux, GstCaps * subset,
GstCaps * superset)
{
GstStructure *sub_s = gst_caps_get_structure (subset, 0);
GstStructure *sup_s = gst_caps_get_structure (superset, 0);
return gst_structure_foreach (sub_s, check_field, sup_s);
}
static gboolean
gst_qt_mux_can_renegotiate (GstQTMux * qtmux, GstPad * pad, GstCaps * caps)
{
GstCaps *current_caps;
/* does not go well to renegotiate stream mid-way, unless
* the old caps are a subset of the new one (this means upstream
* added more info to the caps, as both should be 'fixed' caps) */
current_caps = gst_pad_get_current_caps (pad);
g_assert (caps != NULL);
if (!gst_qtmux_caps_is_subset_full (qtmux, current_caps, caps)) {
gst_caps_unref (current_caps);
GST_WARNING_OBJECT (qtmux,
"pad %s refused renegotiation to %" GST_PTR_FORMAT,
GST_PAD_NAME (pad), caps);
gst_object_unref (qtmux);
return FALSE;
}
GST_DEBUG_OBJECT (qtmux,
"pad %s accepted renegotiation to %" GST_PTR_FORMAT " from %"
GST_PTR_FORMAT, GST_PAD_NAME (pad), caps, current_caps);
gst_caps_unref (current_caps);
return TRUE;
}
static gboolean
gst_qt_mux_audio_sink_set_caps (GstQTPad * qtpad, GstCaps * caps)
{
GstPad *pad = qtpad->collect.pad;
GstQTMux *qtmux = GST_QT_MUX_CAST (gst_pad_get_parent (pad));
GstQTMuxClass *qtmux_klass = (GstQTMuxClass *) (G_OBJECT_GET_CLASS (qtmux));
GstStructure *structure;
const gchar *mimetype;
gint rate, channels;
const GValue *value = NULL;
const GstBuffer *codec_data = NULL;
GstQTMuxFormat format;
AudioSampleEntry entry = { 0, };
AtomInfo *ext_atom = NULL;
gint constant_size = 0;
const gchar *stream_format;
guint32 timescale;
if (qtpad->fourcc)
return gst_qt_mux_can_renegotiate (qtmux, pad, caps);
GST_DEBUG_OBJECT (qtmux, "%s:%s, caps=%" GST_PTR_FORMAT,
GST_DEBUG_PAD_NAME (pad), caps);
qtpad->prepare_buf_func = NULL;
format = qtmux_klass->format;
structure = gst_caps_get_structure (caps, 0);
mimetype = gst_structure_get_name (structure);
/* common info */
if (!gst_structure_get_int (structure, "channels", &channels) ||
!gst_structure_get_int (structure, "rate", &rate)) {
goto refuse_caps;
}
/* optional */
value = gst_structure_get_value (structure, "codec_data");
if (value != NULL)
codec_data = gst_value_get_buffer (value);
qtpad->is_out_of_order = FALSE;
/* set common properties */
entry.sample_rate = rate;
entry.channels = channels;
/* default */
entry.sample_size = 16;
/* this is the typical compressed case */
if (format == GST_QT_MUX_FORMAT_QT) {
entry.version = 1;
entry.compression_id = -2;
}
/* now map onto a fourcc, and some extra properties */
if (strcmp (mimetype, "audio/mpeg") == 0) {
gint mpegversion = 0, mpegaudioversion = 0;
gint layer = -1;
gst_structure_get_int (structure, "mpegversion", &mpegversion);
switch (mpegversion) {
case 1:
gst_structure_get_int (structure, "layer", &layer);
gst_structure_get_int (structure, "mpegaudioversion",
&mpegaudioversion);
/* mp1/2/3 */
/* note: QuickTime player does not like mp3 either way in iso/mp4 */
if (format == GST_QT_MUX_FORMAT_QT)
entry.fourcc = FOURCC__mp3;
else {
entry.fourcc = FOURCC_mp4a;
ext_atom =
build_esds_extension (qtpad->trak, ESDS_OBJECT_TYPE_MPEG1_P3,
ESDS_STREAM_TYPE_AUDIO, codec_data, qtpad->avg_bitrate,
qtpad->max_bitrate);
}
if (layer == 1) {
g_warn_if_fail (format == GST_QT_MUX_FORMAT_MP4
|| format == GST_QT_MUX_FORMAT_QT);
entry.samples_per_packet = 384;
} else if (layer == 2) {
g_warn_if_fail (format == GST_QT_MUX_FORMAT_MP4
|| format == GST_QT_MUX_FORMAT_QT);
entry.samples_per_packet = 1152;
} else {
g_warn_if_fail (layer == 3);
entry.samples_per_packet = (mpegaudioversion <= 1) ? 1152 : 576;
}
entry.bytes_per_sample = 2;
break;
case 4:
/* check stream-format */
stream_format = gst_structure_get_string (structure, "stream-format");
if (stream_format) {
if (strcmp (stream_format, "raw") != 0) {
GST_WARNING_OBJECT (qtmux, "Unsupported AAC stream-format %s, "
"please use 'raw'", stream_format);
goto refuse_caps;
}
} else {
GST_WARNING_OBJECT (qtmux, "No stream-format present in caps, "
"assuming 'raw'");
}
if (!codec_data || gst_buffer_get_size ((GstBuffer *) codec_data) < 2) {
GST_WARNING_OBJECT (qtmux, "no (valid) codec_data for AAC audio");
goto refuse_caps;
} else {
guint8 profile;
gst_buffer_extract ((GstBuffer *) codec_data, 0, &profile, 1);
/* warn if not Low Complexity profile */
profile >>= 3;
if (profile != 2)
GST_WARNING_OBJECT (qtmux,
"non-LC AAC may not run well on (Apple) QuickTime/iTunes");
}
/* AAC */
entry.fourcc = FOURCC_mp4a;
if (format == GST_QT_MUX_FORMAT_QT)
ext_atom = build_mov_aac_extension (qtpad->trak, codec_data,
qtpad->avg_bitrate, qtpad->max_bitrate);
else
ext_atom =
build_esds_extension (qtpad->trak, ESDS_OBJECT_TYPE_MPEG4_P3,
ESDS_STREAM_TYPE_AUDIO, codec_data, qtpad->avg_bitrate,
qtpad->max_bitrate);
break;
default:
break;
}
} else if (strcmp (mimetype, "audio/AMR") == 0) {
entry.fourcc = FOURCC_samr;
entry.sample_size = 16;
entry.samples_per_packet = 160;
entry.bytes_per_sample = 2;
ext_atom = build_amr_extension ();
} else if (strcmp (mimetype, "audio/AMR-WB") == 0) {
entry.fourcc = FOURCC_sawb;
entry.sample_size = 16;
entry.samples_per_packet = 320;
entry.bytes_per_sample = 2;
ext_atom = build_amr_extension ();
} else if (strcmp (mimetype, "audio/x-raw") == 0) {
GstAudioInfo info;
gst_audio_info_init (&info);
if (!gst_audio_info_from_caps (&info, caps))
goto refuse_caps;
/* spec has no place for a distinction in these */
if (info.finfo->width != info.finfo->depth) {
GST_DEBUG_OBJECT (qtmux, "width must be same as depth!");
goto refuse_caps;
}
if ((info.finfo->flags & GST_AUDIO_FORMAT_FLAG_SIGNED)) {
if (info.finfo->endianness == G_LITTLE_ENDIAN)
entry.fourcc = FOURCC_sowt;
else if (info.finfo->endianness == G_BIG_ENDIAN)
entry.fourcc = FOURCC_twos;
else
entry.fourcc = FOURCC_sowt;
/* maximum backward compatibility; only new version for > 16 bit */
if (info.finfo->depth <= 16)
entry.version = 0;
/* not compressed in any case */
entry.compression_id = 0;
/* QT spec says: max at 16 bit even if sample size were actually larger,
* however, most players (e.g. QuickTime!) seem to disagree, so ... */
entry.sample_size = info.finfo->depth;
entry.bytes_per_sample = info.finfo->depth / 8;
entry.samples_per_packet = 1;
entry.bytes_per_packet = info.finfo->depth / 8;
entry.bytes_per_frame = entry.bytes_per_packet * info.channels;
} else {
if (info.finfo->width == 8 && info.finfo->depth == 8) {
/* fall back to old 8-bit version */
entry.fourcc = FOURCC_raw_;
entry.version = 0;
entry.compression_id = 0;
entry.sample_size = 8;
} else {
GST_DEBUG_OBJECT (qtmux, "non 8-bit PCM must be signed");
goto refuse_caps;
}
}
constant_size = (info.finfo->depth / 8) * info.channels;
} else if (strcmp (mimetype, "audio/x-alaw") == 0) {
entry.fourcc = FOURCC_alaw;
entry.samples_per_packet = 1023;
entry.bytes_per_sample = 2;
} else if (strcmp (mimetype, "audio/x-mulaw") == 0) {
entry.fourcc = FOURCC_ulaw;
entry.samples_per_packet = 1023;
entry.bytes_per_sample = 2;
} else if (strcmp (mimetype, "audio/x-adpcm") == 0) {
gint blocksize;
if (!gst_structure_get_int (structure, "block_align", &blocksize)) {
GST_DEBUG_OBJECT (qtmux, "broken caps, block_align missing");
goto refuse_caps;
}
/* Currently only supports WAV-style IMA ADPCM, for which the codec id is
0x11 */
entry.fourcc = MS_WAVE_FOURCC (0x11);
/* 4 byte header per channel (including one sample). 2 samples per byte
remaining. Simplifying gives the following (samples per block per
channel) */
entry.samples_per_packet = 2 * blocksize / channels - 7;
entry.bytes_per_sample = 2;
entry.bytes_per_frame = blocksize;
entry.bytes_per_packet = blocksize / channels;
/* ADPCM has constant size packets */
constant_size = 1;
/* TODO: I don't really understand why this helps, but it does! Constant
* size and compression_id of -2 seem to be incompatible, and other files
* in the wild use this too. */
entry.compression_id = -1;
ext_atom = build_ima_adpcm_extension (channels, rate, blocksize);
} else if (strcmp (mimetype, "audio/x-alac") == 0) {
GstBuffer *codec_config;
gint len;
GstMapInfo map;
entry.fourcc = FOURCC_alac;
gst_buffer_map ((GstBuffer *) codec_data, &map, GST_MAP_READ);
/* let's check if codec data already comes with 'alac' atom prefix */
if (!codec_data || (len = map.size) < 28) {
GST_DEBUG_OBJECT (qtmux, "broken caps, codec data missing");
gst_buffer_unmap ((GstBuffer *) codec_data, &map);
goto refuse_caps;
}
if (GST_READ_UINT32_LE (map.data + 4) == FOURCC_alac) {
len -= 8;
codec_config =
gst_buffer_copy_region ((GstBuffer *) codec_data,
GST_BUFFER_COPY_MEMORY, 8, len);
} else {
codec_config = gst_buffer_ref ((GstBuffer *) codec_data);
}
gst_buffer_unmap ((GstBuffer *) codec_data, &map);
if (len != 28) {
/* does not look good, but perhaps some trailing unneeded stuff */
GST_WARNING_OBJECT (qtmux, "unexpected codec-data size, possibly broken");
}
if (format == GST_QT_MUX_FORMAT_QT)
ext_atom = build_mov_alac_extension (codec_config);
else
ext_atom = build_codec_data_extension (FOURCC_alac, codec_config);
/* set some more info */
gst_buffer_map (codec_config, &map, GST_MAP_READ);
entry.bytes_per_sample = 2;
entry.samples_per_packet = GST_READ_UINT32_BE (map.data + 4);
gst_buffer_unmap (codec_config, &map);
gst_buffer_unref (codec_config);
} else if (strcmp (mimetype, "audio/x-ac3") == 0) {
entry.fourcc = FOURCC_ac_3;
/* Fixed values according to TS 102 366 but it also mentions that
* they should be ignored */
entry.channels = 2;
entry.sample_size = 16;
/* AC-3 needs an extension atom but its data can only be obtained from
* the stream itself. Abuse the prepare_buf_func so we parse a frame
* and get the needed data */
qtpad->prepare_buf_func = gst_qt_mux_prepare_parse_ac3_frame;
} else if (strcmp (mimetype, "audio/x-opus") == 0) {
/* Based on the specification defined in:
* https://www.opus-codec.org/docs/opus_in_isobmff.html */
guint8 channels, mapping_family, stream_count, coupled_count;
guint16 pre_skip;
gint16 output_gain;
guint32 rate;
guint8 channel_mapping[256];
const GValue *streamheader;
const GValue *first_element;
GstBuffer *header;
entry.fourcc = FOURCC_opus;
entry.sample_size = 16;
streamheader = gst_structure_get_value (structure, "streamheader");
if (streamheader && GST_VALUE_HOLDS_ARRAY (streamheader) &&
gst_value_array_get_size (streamheader) != 0) {
first_element = gst_value_array_get_value (streamheader, 0);
header = gst_value_get_buffer (first_element);
if (!gst_codec_utils_opus_parse_header (header, &rate, &channels,
&mapping_family, &stream_count, &coupled_count, channel_mapping,
&pre_skip, &output_gain)) {
GST_ERROR_OBJECT (qtmux, "Incomplete OpusHead");
goto refuse_caps;
}
} else {
GST_WARNING_OBJECT (qtmux,
"no streamheader field in caps %" GST_PTR_FORMAT, caps);
if (!gst_codec_utils_opus_parse_caps (caps, &rate, &channels,
&mapping_family, &stream_count, &coupled_count,
channel_mapping)) {
GST_ERROR_OBJECT (qtmux, "Incomplete Opus caps");
goto refuse_caps;
}
pre_skip = 0;
output_gain = 0;
}
entry.channels = channels;
ext_atom = build_opus_extension (rate, channels, mapping_family,
stream_count, coupled_count, channel_mapping, pre_skip, output_gain);
}
if (!entry.fourcc)
goto refuse_caps;
timescale = gst_qt_mux_pad_get_timescale (GST_QT_MUX_PAD_CAST (pad));
if (!timescale && qtmux->trak_timescale)
timescale = qtmux->trak_timescale;
else if (!timescale)
timescale = entry.sample_rate;
/* ok, set the pad info accordingly */
qtpad->fourcc = entry.fourcc;
qtpad->sample_size = constant_size;
qtpad->trak_ste =
(SampleTableEntry *) atom_trak_set_audio_type (qtpad->trak,
qtmux->context, &entry, timescale, ext_atom, constant_size);
gst_object_unref (qtmux);
return TRUE;
/* ERRORS */
refuse_caps:
{
GST_WARNING_OBJECT (qtmux, "pad %s refused caps %" GST_PTR_FORMAT,
GST_PAD_NAME (pad), caps);
gst_object_unref (qtmux);
return FALSE;
}
}
static gboolean
gst_qt_mux_video_sink_set_caps (GstQTPad * qtpad, GstCaps * caps)
{
GstPad *pad = qtpad->collect.pad;
GstQTMux *qtmux = GST_QT_MUX_CAST (gst_pad_get_parent (pad));
GstQTMuxClass *qtmux_klass = (GstQTMuxClass *) (G_OBJECT_GET_CLASS (qtmux));
GstStructure *structure;
const gchar *mimetype;
gint width, height, depth = -1;
gint framerate_num, framerate_den;
guint32 rate;
const GValue *value = NULL;
const GstBuffer *codec_data = NULL;
VisualSampleEntry entry = { 0, };
GstQTMuxFormat format;
AtomInfo *ext_atom = NULL;
GList *ext_atom_list = NULL;
gboolean sync = FALSE;
int par_num, par_den;
const gchar *multiview_mode;
if (qtpad->fourcc)
return gst_qt_mux_can_renegotiate (qtmux, pad, caps);
GST_DEBUG_OBJECT (qtmux, "%s:%s, caps=%" GST_PTR_FORMAT,
GST_DEBUG_PAD_NAME (pad), caps);
qtpad->prepare_buf_func = NULL;
format = qtmux_klass->format;
structure = gst_caps_get_structure (caps, 0);
mimetype = gst_structure_get_name (structure);
/* required parts */
if (!gst_structure_get_int (structure, "width", &width) ||
!gst_structure_get_int (structure, "height", &height))
goto refuse_caps;
/* optional */
depth = -1;
/* works as a default timebase */
framerate_num = 10000;
framerate_den = 1;
gst_structure_get_fraction (structure, "framerate", &framerate_num,
&framerate_den);
gst_structure_get_int (structure, "depth", &depth);
value = gst_structure_get_value (structure, "codec_data");
if (value != NULL)
codec_data = gst_value_get_buffer (value);
par_num = 1;
par_den = 1;
gst_structure_get_fraction (structure, "pixel-aspect-ratio", &par_num,
&par_den);
qtpad->is_out_of_order = FALSE;
/* bring frame numerator into a range that ensures both reasonable resolution
* as well as a fair duration */
qtpad->expected_sample_duration_n = framerate_num;
qtpad->expected_sample_duration_d = framerate_den;
rate = gst_qt_mux_pad_get_timescale (GST_QT_MUX_PAD_CAST (pad));
if (!rate && qtmux->trak_timescale)
rate = qtmux->trak_timescale;
else if (!rate)
rate = atom_framerate_to_timescale (framerate_num, framerate_den);
GST_DEBUG_OBJECT (qtmux, "Rate of video track selected: %" G_GUINT32_FORMAT,
rate);
multiview_mode = gst_structure_get_string (structure, "multiview-mode");
if (multiview_mode && !qtpad->trak->mdia.minf.stbl.svmi) {
GstVideoMultiviewMode mode;
GstVideoMultiviewFlags flags = 0;
mode = gst_video_multiview_mode_from_caps_string (multiview_mode);
gst_structure_get_flagset (structure, "multiview-flags", &flags, NULL);
switch (mode) {
case GST_VIDEO_MULTIVIEW_MODE_SIDE_BY_SIDE:
qtpad->trak->mdia.minf.stbl.svmi =
atom_svmi_new (0,
flags & GST_VIDEO_MULTIVIEW_FLAGS_RIGHT_VIEW_FIRST);
break;
case GST_VIDEO_MULTIVIEW_MODE_ROW_INTERLEAVED:
qtpad->trak->mdia.minf.stbl.svmi =
atom_svmi_new (1,
flags & GST_VIDEO_MULTIVIEW_FLAGS_RIGHT_VIEW_FIRST);
break;
case GST_VIDEO_MULTIVIEW_MODE_FRAME_BY_FRAME:
qtpad->trak->mdia.minf.stbl.svmi =
atom_svmi_new (2,
flags & GST_VIDEO_MULTIVIEW_FLAGS_RIGHT_VIEW_FIRST);
break;
default:
GST_DEBUG_OBJECT (qtmux, "Unsupported multiview-mode %s",
multiview_mode);
break;
}
}
/* set common properties */
entry.width = width;
entry.height = height;
entry.par_n = par_num;
entry.par_d = par_den;
/* should be OK according to qt and iso spec, override if really needed */
entry.color_table_id = -1;
entry.frame_count = 1;
entry.depth = 24;
/* sync entries by default */
sync = TRUE;
/* now map onto a fourcc, and some extra properties */
if (strcmp (mimetype, "video/x-raw") == 0) {
const gchar *format;
GstVideoFormat fmt;
const GstVideoFormatInfo *vinfo;
format = gst_structure_get_string (structure, "format");
fmt = gst_video_format_from_string (format);
vinfo = gst_video_format_get_info (fmt);
switch (fmt) {
case GST_VIDEO_FORMAT_UYVY:
if (depth == -1)
depth = 24;
entry.fourcc = FOURCC_2vuy;
entry.depth = depth;
sync = FALSE;
break;
case GST_VIDEO_FORMAT_v210:
if (depth == -1)
depth = 24;
entry.fourcc = FOURCC_v210;
entry.depth = depth;
sync = FALSE;
break;
default:
if (GST_VIDEO_FORMAT_INFO_FLAGS (vinfo) & GST_VIDEO_FORMAT_FLAG_RGB) {
entry.fourcc = FOURCC_raw_;
entry.depth = GST_VIDEO_FORMAT_INFO_PSTRIDE (vinfo, 0) * 8;
sync = FALSE;
}
break;
}
} else if (strcmp (mimetype, "video/x-h263") == 0) {
ext_atom = NULL;
if (format == GST_QT_MUX_FORMAT_QT)
entry.fourcc = FOURCC_h263;
else
entry.fourcc = FOURCC_s263;
ext_atom = build_h263_extension ();
if (ext_atom != NULL)
ext_atom_list = g_list_prepend (ext_atom_list, ext_atom);
} else if (strcmp (mimetype, "video/x-divx") == 0 ||
strcmp (mimetype, "video/mpeg") == 0) {
gint version = 0;
if (strcmp (mimetype, "video/x-divx") == 0) {
gst_structure_get_int (structure, "divxversion", &version);
version = version == 5 ? 1 : 0;
} else {
gst_structure_get_int (structure, "mpegversion", &version);
version = version == 4 ? 1 : 0;
}
if (version) {
entry.fourcc = FOURCC_mp4v;
ext_atom =
build_esds_extension (qtpad->trak, ESDS_OBJECT_TYPE_MPEG4_P2,
ESDS_STREAM_TYPE_VISUAL, codec_data, qtpad->avg_bitrate,
qtpad->max_bitrate);
if (ext_atom != NULL)
ext_atom_list = g_list_prepend (ext_atom_list, ext_atom);
if (!codec_data)
GST_WARNING_OBJECT (qtmux, "no codec_data for MPEG4 video; "
"output might not play in Apple QuickTime (try global-headers?)");
}
} else if (strcmp (mimetype, "video/x-h264") == 0) {
if (!codec_data) {
GST_WARNING_OBJECT (qtmux, "no codec_data in h264 caps");
goto refuse_caps;
}
entry.fourcc = FOURCC_avc1;
ext_atom = build_btrt_extension (0, qtpad->avg_bitrate, qtpad->max_bitrate);
if (ext_atom != NULL)
ext_atom_list = g_list_prepend (ext_atom_list, ext_atom);
ext_atom = build_codec_data_extension (FOURCC_avcC, codec_data);
if (ext_atom != NULL)
ext_atom_list = g_list_prepend (ext_atom_list, ext_atom);
} else if (strcmp (mimetype, "video/x-h265") == 0) {
const gchar *format;
if (!codec_data) {
GST_WARNING_OBJECT (qtmux, "no codec_data in h265 caps");
goto refuse_caps;
}
format = gst_structure_get_string (structure, "stream-format");
if (strcmp (format, "hvc1") == 0)
entry.fourcc = FOURCC_hvc1;
else if (strcmp (format, "hev1") == 0)
entry.fourcc = FOURCC_hev1;
ext_atom = build_btrt_extension (0, qtpad->avg_bitrate, qtpad->max_bitrate);
if (ext_atom != NULL)
ext_atom_list = g_list_prepend (ext_atom_list, ext_atom);
ext_atom = build_codec_data_extension (FOURCC_hvcC, codec_data);
if (ext_atom != NULL)
ext_atom_list = g_list_prepend (ext_atom_list, ext_atom);
} else if (strcmp (mimetype, "video/x-svq") == 0) {
gint version = 0;
const GstBuffer *seqh = NULL;
const GValue *seqh_value;
gdouble gamma = 0;
gst_structure_get_int (structure, "svqversion", &version);
if (version == 3) {
entry.fourcc = FOURCC_SVQ3;
entry.version = 3;
entry.depth = 32;
seqh_value = gst_structure_get_value (structure, "seqh");
if (seqh_value) {
seqh = gst_value_get_buffer (seqh_value);
ext_atom = build_SMI_atom (seqh);
if (ext_atom)
ext_atom_list = g_list_prepend (ext_atom_list, ext_atom);
}
/* we need to add the gamma anyway because quicktime might crash
* when it doesn't find it */
if (!gst_structure_get_double (structure, "applied-gamma", &gamma)) {
/* it seems that using 0 here makes it ignored */
gamma = 0.0;
}
ext_atom = build_gama_atom (gamma);
if (ext_atom)
ext_atom_list = g_list_prepend (ext_atom_list, ext_atom);
} else {
GST_WARNING_OBJECT (qtmux, "SVQ version %d not supported. Please file "
"a bug at http://bugzilla.gnome.org", version);
}
} else if (strcmp (mimetype, "video/x-dv") == 0) {
gint version = 0;
gboolean pal = TRUE;
sync = FALSE;
if (framerate_num != 25 || framerate_den != 1)
pal = FALSE;
gst_structure_get_int (structure, "dvversion", &version);
/* fall back to typical one */
if (!version)
version = 25;
switch (version) {
case 25:
if (pal)
entry.fourcc = FOURCC_dvcp;
else
entry.fourcc = FOURCC_dvc_;
break;
case 50:
if (pal)
entry.fourcc = FOURCC_dv5p;
else
entry.fourcc = FOURCC_dv5n;
break;
default:
GST_WARNING_OBJECT (qtmux, "unrecognized dv version");
break;
}
} else if (strcmp (mimetype, "image/jpeg") == 0) {
entry.fourcc = FOURCC_jpeg;
sync = FALSE;
} else if (strcmp (mimetype, "image/png") == 0) {
entry.fourcc = FOURCC_png;
sync = FALSE;
} else if (strcmp (mimetype, "image/x-j2c") == 0 ||
strcmp (mimetype, "image/x-jpc") == 0) {
const gchar *colorspace;
const GValue *cmap_array;
const GValue *cdef_array;
gint ncomp = 0;
if (strcmp (mimetype, "image/x-jpc") == 0) {
qtpad->prepare_buf_func = gst_qt_mux_prepare_jpc_buffer;
}
gst_structure_get_int (structure, "num-components", &ncomp);
cmap_array = gst_structure_get_value (structure, "component-map");
cdef_array = gst_structure_get_value (structure, "channel-definitions");
ext_atom = NULL;
entry.fourcc = FOURCC_mjp2;
sync = FALSE;
colorspace = gst_structure_get_string (structure, "colorspace");
if (colorspace &&
(ext_atom =
build_jp2h_extension (width, height, colorspace, ncomp, cmap_array,
cdef_array)) != NULL) {
ext_atom_list = g_list_append (ext_atom_list, ext_atom);
ext_atom = build_jp2x_extension (codec_data);
if (ext_atom)
ext_atom_list = g_list_append (ext_atom_list, ext_atom);
} else {
GST_DEBUG_OBJECT (qtmux, "missing or invalid fourcc in jp2 caps");
goto refuse_caps;
}
} else if (strcmp (mimetype, "video/x-vp8") == 0) {
entry.fourcc = FOURCC_vp08;
} else if (strcmp (mimetype, "video/x-vp9") == 0) {
entry.fourcc = FOURCC_vp09;
} else if (strcmp (mimetype, "video/x-dirac") == 0) {
entry.fourcc = FOURCC_drac;
} else if (strcmp (mimetype, "video/x-qt-part") == 0) {
guint32 fourcc = 0;
gst_structure_get_uint (structure, "format", &fourcc);
entry.fourcc = fourcc;
} else if (strcmp (mimetype, "video/x-mp4-part") == 0) {
guint32 fourcc = 0;
gst_structure_get_uint (structure, "format", &fourcc);
entry.fourcc = fourcc;
} else if (strcmp (mimetype, "video/x-prores") == 0) {
const gchar *variant;
variant = gst_structure_get_string (structure, "variant");
if (!variant || !g_strcmp0 (variant, "standard"))
entry.fourcc = FOURCC_apcn;
else if (!g_strcmp0 (variant, "lt"))
entry.fourcc = FOURCC_apcs;
else if (!g_strcmp0 (variant, "hq"))
entry.fourcc = FOURCC_apch;
else if (!g_strcmp0 (variant, "proxy"))
entry.fourcc = FOURCC_apco;
else if (!g_strcmp0 (variant, "4444"))
entry.fourcc = FOURCC_ap4h;
else if (!g_strcmp0 (variant, "4444xq"))
entry.fourcc = FOURCC_ap4x;
sync = FALSE;
if (!qtmux->interleave_time_set)
qtmux->interleave_time = 500 * GST_MSECOND;
if (!qtmux->interleave_bytes_set)
qtmux->interleave_bytes = width > 720 ? 4 * 1024 * 1024 : 2 * 1024 * 1024;
} else if (strcmp (mimetype, "video/x-cineform") == 0) {
entry.fourcc = FOURCC_cfhd;
sync = FALSE;
}
if (!entry.fourcc)
goto refuse_caps;
if (qtmux_klass->format == GST_QT_MUX_FORMAT_QT ||
qtmux_klass->format == GST_QT_MUX_FORMAT_MP4) {
const gchar *s;
GstVideoColorimetry colorimetry;
s = gst_structure_get_string (structure, "colorimetry");
if (s && gst_video_colorimetry_from_string (&colorimetry, s)) {
ext_atom =
build_colr_extension (&colorimetry,
qtmux_klass->format == GST_QT_MUX_FORMAT_MP4);
if (ext_atom)
ext_atom_list = g_list_append (ext_atom_list, ext_atom);
}
}
if (qtmux_klass->format == GST_QT_MUX_FORMAT_QT
|| strcmp (mimetype, "image/x-j2c") == 0
|| strcmp (mimetype, "image/x-jpc") == 0) {
const gchar *s;
GstVideoInterlaceMode interlace_mode;
GstVideoFieldOrder field_order;
gint fields = -1;
if (strcmp (mimetype, "image/x-j2c") == 0 ||
strcmp (mimetype, "image/x-jpc") == 0) {
fields = 1;
gst_structure_get_int (structure, "fields", &fields);
}
s = gst_structure_get_string (structure, "interlace-mode");
if (s)
interlace_mode = gst_video_interlace_mode_from_string (s);
else
interlace_mode =
(fields <=
1) ? GST_VIDEO_INTERLACE_MODE_PROGRESSIVE :
GST_VIDEO_INTERLACE_MODE_MIXED;
field_order = GST_VIDEO_FIELD_ORDER_UNKNOWN;
if (interlace_mode == GST_VIDEO_INTERLACE_MODE_INTERLEAVED) {
s = gst_structure_get_string (structure, "field-order");
if (s)
field_order = gst_video_field_order_from_string (s);
}
ext_atom = build_fiel_extension (interlace_mode, field_order);
if (ext_atom)
ext_atom_list = g_list_append (ext_atom_list, ext_atom);
}
if (qtmux_klass->format == GST_QT_MUX_FORMAT_QT &&
width > 640 && width <= 1052 && height >= 480 && height <= 576) {
/* The 'clap' extension is also defined for MP4 but inventing values in
* general seems a bit tricky for this one. We only write it for
* SD resolution in MOV, where it is a requirement.
* The same goes for the 'tapt' extension, just that it is not defined for
* MP4 and only for MOV
*/
gint dar_num, dar_den;
gint clef_width, clef_height, prof_width;
gint clap_width_n, clap_width_d, clap_height;
gint cdiv;
double approx_dar;
/* First, guess display aspect ratio based on pixel aspect ratio,
* width and height. We assume that display aspect ratio is either
* 4:3 or 16:9
*/
approx_dar = (gdouble) (width * par_num) / (height * par_den);
if (approx_dar > 11.0 / 9 && approx_dar < 14.0 / 9) {
dar_num = 4;
dar_den = 3;
} else if (approx_dar > 15.0 / 9 && approx_dar < 18.0 / 9) {
dar_num = 16;
dar_den = 9;
} else {
dar_num = width * par_num;
dar_den = height * par_den;
cdiv = gst_util_greatest_common_divisor (dar_num, dar_den);
dar_num /= cdiv;
dar_den /= cdiv;
}
/* Then, calculate clean-aperture values (clap and clef)
* using the guessed DAR.
*/
clef_height = clap_height = (height == 486 ? 480 : height);
clef_width = gst_util_uint64_scale (clef_height,
dar_num * G_GUINT64_CONSTANT (65536), dar_den);
prof_width = gst_util_uint64_scale (width,
par_num * G_GUINT64_CONSTANT (65536), par_den);
clap_width_n = clap_height * dar_num * par_den;
clap_width_d = dar_den * par_num;
cdiv = gst_util_greatest_common_divisor (clap_width_n, clap_width_d);
clap_width_n /= cdiv;
clap_width_d /= cdiv;
ext_atom = build_tapt_extension (clef_width, clef_height << 16, prof_width,
height << 16, width << 16, height << 16);
qtpad->trak->tapt = ext_atom;
ext_atom = build_clap_extension (clap_width_n, clap_width_d,
clap_height, 1, 0, 1, 0, 1);
if (ext_atom)
ext_atom_list = g_list_append (ext_atom_list, ext_atom);
}
/* ok, set the pad info accordingly */
qtpad->fourcc = entry.fourcc;
qtpad->sync = sync;
qtpad->trak_ste =
(SampleTableEntry *) atom_trak_set_video_type (qtpad->trak,
qtmux->context, &entry, rate, ext_atom_list);
if (strcmp (mimetype, "video/x-prores") == 0) {
SampleTableEntryMP4V *mp4v = (SampleTableEntryMP4V *) qtpad->trak_ste;
const gchar *compressor = NULL;
mp4v->spatial_quality = 0x3FF;
mp4v->temporal_quality = 0;
mp4v->vendor = FOURCC_appl;
mp4v->horizontal_resolution = 72 << 16;
mp4v->vertical_resolution = 72 << 16;
mp4v->depth = (entry.fourcc == FOURCC_ap4h
|| entry.fourcc == FOURCC_ap4x) ? 32 : 24;
/* Set compressor name, required by some software */
switch (entry.fourcc) {
case FOURCC_apcn:
compressor = "Apple ProRes 422";
break;
case FOURCC_apcs:
compressor = "Apple ProRes 422 LT";
break;
case FOURCC_apch:
compressor = "Apple ProRes 422 HQ";
break;
case FOURCC_apco:
compressor = "Apple ProRes 422 Proxy";
break;
case FOURCC_ap4h:
compressor = "Apple ProRes 4444";
break;
case FOURCC_ap4x:
compressor = "Apple ProRes 4444 XQ";
break;
}
if (compressor) {
strcpy ((gchar *) mp4v->compressor + 1, compressor);
mp4v->compressor[0] = strlen (compressor);
}
}
gst_object_unref (qtmux);
return TRUE;
/* ERRORS */
refuse_caps:
{
GST_WARNING_OBJECT (qtmux, "pad %s refused caps %" GST_PTR_FORMAT,
GST_PAD_NAME (pad), caps);
gst_object_unref (qtmux);
return FALSE;
}
}
static gboolean
gst_qt_mux_subtitle_sink_set_caps (GstQTPad * qtpad, GstCaps * caps)
{
GstPad *pad = qtpad->collect.pad;
GstQTMux *qtmux = GST_QT_MUX_CAST (gst_pad_get_parent (pad));
GstStructure *structure;
SubtitleSampleEntry entry = { 0, };
if (qtpad->fourcc)
return gst_qt_mux_can_renegotiate (qtmux, pad, caps);
GST_DEBUG_OBJECT (qtmux, "%s:%s, caps=%" GST_PTR_FORMAT,
GST_DEBUG_PAD_NAME (pad), caps);
/* subtitles default */
subtitle_sample_entry_init (&entry);
qtpad->is_out_of_order = FALSE;
qtpad->sync = FALSE;
qtpad->sparse = TRUE;
qtpad->prepare_buf_func = NULL;
structure = gst_caps_get_structure (caps, 0);
if (gst_structure_has_name (structure, "text/x-raw")) {
const gchar *format = gst_structure_get_string (structure, "format");
if (format && strcmp (format, "utf8") == 0) {
entry.fourcc = FOURCC_tx3g;
qtpad->prepare_buf_func = gst_qt_mux_prepare_tx3g_buffer;
qtpad->create_empty_buffer = gst_qt_mux_create_empty_tx3g_buffer;
}
}
if (!entry.fourcc)
goto refuse_caps;
qtpad->fourcc = entry.fourcc;
qtpad->trak_ste =
(SampleTableEntry *) atom_trak_set_subtitle_type (qtpad->trak,
qtmux->context, &entry);
gst_object_unref (qtmux);
return TRUE;
/* ERRORS */
refuse_caps:
{
GST_WARNING_OBJECT (qtmux, "pad %s refused caps %" GST_PTR_FORMAT,
GST_PAD_NAME (pad), caps);
gst_object_unref (qtmux);
return FALSE;
}
}
static gboolean
gst_qt_mux_sink_event (GstCollectPads * pads, GstCollectData * data,
GstEvent * event, gpointer user_data)
{
GstQTMux *qtmux;
guint32 avg_bitrate = 0, max_bitrate = 0;
GstPad *pad = data->pad;
gboolean ret = TRUE;
qtmux = GST_QT_MUX_CAST (user_data);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_CAPS:
{
GstCaps *caps;
GstQTPad *collect_pad;
gst_event_parse_caps (event, &caps);
/* find stream data */
collect_pad = (GstQTPad *) gst_pad_get_element_private (pad);
g_assert (collect_pad);
g_assert (collect_pad->set_caps);
ret = collect_pad->set_caps (collect_pad, caps);
gst_event_unref (event);
event = NULL;
break;
}
case GST_EVENT_TAG:{
GstTagList *list;
GstTagSetter *setter = GST_TAG_SETTER (qtmux);
GstTagMergeMode mode;
gchar *code;
GstQTPad *collect_pad;
GST_OBJECT_LOCK (qtmux);
mode = gst_tag_setter_get_tag_merge_mode (setter);
collect_pad = (GstQTPad *) gst_pad_get_element_private (pad);
gst_event_parse_tag (event, &list);
GST_DEBUG_OBJECT (qtmux, "received tag event on pad %s:%s : %"
GST_PTR_FORMAT, GST_DEBUG_PAD_NAME (pad), list);
if (gst_tag_list_get_scope (list) == GST_TAG_SCOPE_GLOBAL) {
gst_tag_setter_merge_tags (setter, list, mode);
qtmux->tags_changed = TRUE;
} else {
if (!collect_pad->tags)
collect_pad->tags = gst_tag_list_new_empty ();
gst_tag_list_insert (collect_pad->tags, list, mode);
collect_pad->tags_changed = TRUE;
}
GST_OBJECT_UNLOCK (qtmux);
if (gst_tag_list_get_uint (list, GST_TAG_BITRATE, &avg_bitrate) |
gst_tag_list_get_uint (list, GST_TAG_MAXIMUM_BITRATE, &max_bitrate)) {
GstQTPad *qtpad = gst_pad_get_element_private (pad);
g_assert (qtpad);
if (avg_bitrate > 0 && avg_bitrate < G_MAXUINT32)
qtpad->avg_bitrate = avg_bitrate;
if (max_bitrate > 0 && max_bitrate < G_MAXUINT32)
qtpad->max_bitrate = max_bitrate;
}
if (gst_tag_list_get_string (list, GST_TAG_LANGUAGE_CODE, &code)) {
const char *iso_code = gst_tag_get_language_code_iso_639_2T (code);
if (iso_code) {
GstQTPad *qtpad = gst_pad_get_element_private (pad);
g_assert (qtpad);
if (qtpad->trak) {
/* https://developer.apple.com/library/mac/#documentation/QuickTime/QTFF/QTFFChap4/qtff4.html */
qtpad->trak->mdia.mdhd.language_code =
(iso_code[0] - 0x60) * 0x400 + (iso_code[1] - 0x60) * 0x20 +
(iso_code[2] - 0x60);
}
}
g_free (code);
}
gst_event_unref (event);
event = NULL;
ret = TRUE;
break;
}
default:
break;
}
if (event != NULL)
return gst_collect_pads_event_default (pads, data, event, FALSE);
return ret;
}
static void
gst_qt_mux_release_pad (GstElement * element, GstPad * pad)
{
GstQTMux *mux = GST_QT_MUX_CAST (element);
GSList *walk;
GST_DEBUG_OBJECT (element, "Releasing %s:%s", GST_DEBUG_PAD_NAME (pad));
for (walk = mux->sinkpads; walk; walk = g_slist_next (walk)) {
GstQTPad *qtpad = (GstQTPad *) walk->data;
GST_DEBUG ("Checking %s:%s", GST_DEBUG_PAD_NAME (qtpad->collect.pad));
if (qtpad->collect.pad == pad) {
/* this is it, remove */
mux->sinkpads = g_slist_delete_link (mux->sinkpads, walk);
gst_element_remove_pad (element, pad);
break;
}
}
if (mux->current_pad && mux->current_pad->collect.pad == pad) {
mux->current_pad = NULL;
mux->current_chunk_size = 0;
mux->current_chunk_duration = 0;
}
gst_collect_pads_remove_pad (mux->collect, pad);
if (mux->sinkpads == NULL) {
/* No more outstanding request pads, reset our counters */
mux->video_pads = 0;
mux->audio_pads = 0;
mux->subtitle_pads = 0;
}
}
static GstPad *
gst_qt_mux_request_new_pad (GstElement * element,
GstPadTemplate * templ, const gchar * req_name, const GstCaps * caps)
{
GstElementClass *klass = GST_ELEMENT_GET_CLASS (element);
GstQTMux *qtmux = GST_QT_MUX_CAST (element);
GstQTPad *collect_pad;
GstPad *newpad;
GstQTPadSetCapsFunc setcaps_func;
gchar *name;
gint pad_id;
gboolean lock = TRUE;
if (templ->direction != GST_PAD_SINK)
goto wrong_direction;
if (qtmux->state > GST_QT_MUX_STATE_STARTED)
goto too_late;
if (templ == gst_element_class_get_pad_template (klass, "audio_%u")) {
setcaps_func = gst_qt_mux_audio_sink_set_caps;
if (req_name != NULL && sscanf (req_name, "audio_%u", &pad_id) == 1) {
name = g_strdup (req_name);
} else {
name = g_strdup_printf ("audio_%u", qtmux->audio_pads++);
}
} else if (templ == gst_element_class_get_pad_template (klass, "video_%u")) {
setcaps_func = gst_qt_mux_video_sink_set_caps;
if (req_name != NULL && sscanf (req_name, "video_%u", &pad_id) == 1) {
name = g_strdup (req_name);
} else {
name = g_strdup_printf ("video_%u", qtmux->video_pads++);
}
} else if (templ == gst_element_class_get_pad_template (klass, "subtitle_%u")) {
setcaps_func = gst_qt_mux_subtitle_sink_set_caps;
if (req_name != NULL && sscanf (req_name, "subtitle_%u", &pad_id) == 1) {
name = g_strdup (req_name);
} else {
name = g_strdup_printf ("subtitle_%u", qtmux->subtitle_pads++);
}
lock = FALSE;
} else
goto wrong_template;
GST_DEBUG_OBJECT (qtmux, "Requested pad: %s", name);
/* create pad and add to collections */
newpad =
g_object_new (GST_TYPE_QT_MUX_PAD, "name", name, "direction",
templ->direction, "template", templ, NULL);
g_free (name);
collect_pad = (GstQTPad *)
gst_collect_pads_add_pad (qtmux->collect, newpad, sizeof (GstQTPad),
(GstCollectDataDestroyNotify) (gst_qt_mux_pad_reset), lock);
/* set up pad */
gst_qt_mux_pad_reset (collect_pad);
collect_pad->trak = atom_trak_new (qtmux->context);
atom_moov_add_trak (qtmux->moov, collect_pad->trak);
qtmux->sinkpads = g_slist_append (qtmux->sinkpads, collect_pad);
/* set up pad functions */
collect_pad->set_caps = setcaps_func;
gst_pad_set_active (newpad, TRUE);
gst_element_add_pad (element, newpad);
return newpad;
/* ERRORS */
wrong_direction:
{
GST_WARNING_OBJECT (qtmux, "Request pad that is not a SINK pad.");
return NULL;
}
too_late:
{
GST_WARNING_OBJECT (qtmux, "Not providing request pad after stream start.");
return NULL;
}
wrong_template:
{
GST_WARNING_OBJECT (qtmux, "This is not our template!");
return NULL;
}
}
static void
gst_qt_mux_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
GstQTMux *qtmux = GST_QT_MUX_CAST (object);
GST_OBJECT_LOCK (qtmux);
switch (prop_id) {
case PROP_MOVIE_TIMESCALE:
g_value_set_uint (value, qtmux->timescale);
break;
case PROP_TRAK_TIMESCALE:
g_value_set_uint (value, qtmux->trak_timescale);
break;
case PROP_DO_CTTS:
g_value_set_boolean (value, qtmux->guess_pts);
break;
#ifndef GST_REMOVE_DEPRECATED
case PROP_DTS_METHOD:
g_value_set_enum (value, qtmux->dts_method);
break;
#endif
case PROP_FAST_START:
g_value_set_boolean (value, qtmux->fast_start);
break;
case PROP_FAST_START_TEMP_FILE:
g_value_set_string (value, qtmux->fast_start_file_path);
break;
case PROP_MOOV_RECOV_FILE:
g_value_set_string (value, qtmux->moov_recov_file_path);
break;
case PROP_FRAGMENT_DURATION:
g_value_set_uint (value, qtmux->fragment_duration);
break;
case PROP_STREAMABLE:
g_value_set_boolean (value, qtmux->streamable);
break;
case PROP_RESERVED_MAX_DURATION:
g_value_set_uint64 (value, qtmux->reserved_max_duration);
break;
case PROP_RESERVED_DURATION_REMAINING:
if (qtmux->reserved_duration_remaining == GST_CLOCK_TIME_NONE)
g_value_set_uint64 (value, qtmux->reserved_max_duration);
else {
GstClockTime remaining = qtmux->reserved_duration_remaining;
/* Report the remaining space as the calculated remaining, minus
* however much we've muxed since the last update */
if (remaining > qtmux->muxed_since_last_update)
remaining -= qtmux->muxed_since_last_update;
else
remaining = 0;
GST_LOG_OBJECT (qtmux, "reserved duration remaining - reporting %"
G_GUINT64_FORMAT "(%" G_GUINT64_FORMAT " - %" G_GUINT64_FORMAT,
remaining, qtmux->reserved_duration_remaining,
qtmux->muxed_since_last_update);
g_value_set_uint64 (value, remaining);
}
break;
case PROP_RESERVED_MOOV_UPDATE_PERIOD:
g_value_set_uint64 (value, qtmux->reserved_moov_update_period);
break;
case PROP_RESERVED_BYTES_PER_SEC:
g_value_set_uint (value, qtmux->reserved_bytes_per_sec_per_trak);
break;
case PROP_RESERVED_PREFILL:
g_value_set_boolean (value, qtmux->reserved_prefill);
break;
case PROP_INTERLEAVE_BYTES:
g_value_set_uint64 (value, qtmux->interleave_bytes);
break;
case PROP_INTERLEAVE_TIME:
g_value_set_uint64 (value, qtmux->interleave_time);
break;
case PROP_MAX_RAW_AUDIO_DRIFT:
g_value_set_uint64 (value, qtmux->max_raw_audio_drift);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
GST_OBJECT_UNLOCK (qtmux);
}
static void
gst_qt_mux_generate_fast_start_file_path (GstQTMux * qtmux)
{
gchar *tmp;
g_free (qtmux->fast_start_file_path);
qtmux->fast_start_file_path = NULL;
tmp = g_strdup_printf ("%s%d", "qtmux", g_random_int ());
qtmux->fast_start_file_path = g_build_filename (g_get_tmp_dir (), tmp, NULL);
g_free (tmp);
}
static void
gst_qt_mux_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstQTMux *qtmux = GST_QT_MUX_CAST (object);
GST_OBJECT_LOCK (qtmux);
switch (prop_id) {
case PROP_MOVIE_TIMESCALE:
qtmux->timescale = g_value_get_uint (value);
break;
case PROP_TRAK_TIMESCALE:
qtmux->trak_timescale = g_value_get_uint (value);
break;
case PROP_DO_CTTS:
qtmux->guess_pts = g_value_get_boolean (value);
break;
#ifndef GST_REMOVE_DEPRECATED
case PROP_DTS_METHOD:
qtmux->dts_method = g_value_get_enum (value);
break;
#endif
case PROP_FAST_START:
qtmux->fast_start = g_value_get_boolean (value);
break;
case PROP_FAST_START_TEMP_FILE:
g_free (qtmux->fast_start_file_path);
qtmux->fast_start_file_path = g_value_dup_string (value);
/* NULL means to generate a random one */
if (!qtmux->fast_start_file_path) {
gst_qt_mux_generate_fast_start_file_path (qtmux);
}
break;
case PROP_MOOV_RECOV_FILE:
g_free (qtmux->moov_recov_file_path);
qtmux->moov_recov_file_path = g_value_dup_string (value);
break;
case PROP_FRAGMENT_DURATION:
qtmux->fragment_duration = g_value_get_uint (value);
break;
case PROP_STREAMABLE:{
GstQTMuxClass *qtmux_klass =
(GstQTMuxClass *) (G_OBJECT_GET_CLASS (qtmux));
if (qtmux_klass->format == GST_QT_MUX_FORMAT_ISML) {
qtmux->streamable = g_value_get_boolean (value);
}
break;
}
case PROP_RESERVED_MAX_DURATION:
qtmux->reserved_max_duration = g_value_get_uint64 (value);
break;
case PROP_RESERVED_MOOV_UPDATE_PERIOD:
qtmux->reserved_moov_update_period = g_value_get_uint64 (value);
break;
case PROP_RESERVED_BYTES_PER_SEC:
qtmux->reserved_bytes_per_sec_per_trak = g_value_get_uint (value);
break;
case PROP_RESERVED_PREFILL:
qtmux->reserved_prefill = g_value_get_boolean (value);
break;
case PROP_INTERLEAVE_BYTES:
qtmux->interleave_bytes = g_value_get_uint64 (value);
qtmux->interleave_bytes_set = TRUE;
break;
case PROP_INTERLEAVE_TIME:
qtmux->interleave_time = g_value_get_uint64 (value);
qtmux->interleave_time_set = TRUE;
break;
case PROP_MAX_RAW_AUDIO_DRIFT:
qtmux->max_raw_audio_drift = g_value_get_uint64 (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
GST_OBJECT_UNLOCK (qtmux);
}
static GstStateChangeReturn
gst_qt_mux_change_state (GstElement * element, GstStateChange transition)
{
GstStateChangeReturn ret;
GstQTMux *qtmux = GST_QT_MUX_CAST (element);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
gst_collect_pads_start (qtmux->collect);
qtmux->state = GST_QT_MUX_STATE_STARTED;
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
gst_collect_pads_stop (qtmux->collect);
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
gst_qt_mux_reset (qtmux, TRUE);
break;
case GST_STATE_CHANGE_READY_TO_NULL:
break;
default:
break;
}
return ret;
}
gboolean
gst_qt_mux_register (GstPlugin * plugin)
{
GTypeInfo typeinfo = {
sizeof (GstQTMuxClass),
(GBaseInitFunc) gst_qt_mux_base_init,
NULL,
(GClassInitFunc) gst_qt_mux_class_init,
NULL,
NULL,
sizeof (GstQTMux),
0,
(GInstanceInitFunc) gst_qt_mux_init,
};
static const GInterfaceInfo tag_setter_info = {
NULL, NULL, NULL
};
static const GInterfaceInfo tag_xmp_writer_info = {
NULL, NULL, NULL
};
static const GInterfaceInfo preset_info = {
NULL, NULL, NULL
};
GType type;
GstQTMuxFormat format;
GstQTMuxClassParams *params;
guint i = 0;
GST_DEBUG_CATEGORY_INIT (gst_qt_mux_debug, "qtmux", 0, "QT Muxer");
GST_LOG ("Registering muxers");
while (TRUE) {
GstQTMuxFormatProp *prop;
GstCaps *subtitle_caps;
prop = &gst_qt_mux_format_list[i];
format = prop->format;
if (format == GST_QT_MUX_FORMAT_NONE)
break;
/* create a cache for these properties */
params = g_new0 (GstQTMuxClassParams, 1);
params->prop = prop;
params->src_caps = gst_static_caps_get (&prop->src_caps);
params->video_sink_caps = gst_static_caps_get (&prop->video_sink_caps);
params->audio_sink_caps = gst_static_caps_get (&prop->audio_sink_caps);
subtitle_caps = gst_static_caps_get (&prop->subtitle_sink_caps);
if (!gst_caps_is_equal (subtitle_caps, GST_CAPS_NONE)) {
params->subtitle_sink_caps = subtitle_caps;
} else {
gst_caps_unref (subtitle_caps);
}
/* create the type now */
type = g_type_register_static (GST_TYPE_ELEMENT, prop->type_name, &typeinfo,
0);
g_type_set_qdata (type, GST_QT_MUX_PARAMS_QDATA, (gpointer) params);
g_type_add_interface_static (type, GST_TYPE_TAG_SETTER, &tag_setter_info);
g_type_add_interface_static (type, GST_TYPE_TAG_XMP_WRITER,
&tag_xmp_writer_info);
g_type_add_interface_static (type, GST_TYPE_PRESET, &preset_info);
if (!gst_element_register (plugin, prop->name, prop->rank, type))
return FALSE;
i++;
}
GST_LOG ("Finished registering muxers");
/* FIXME: ideally classification tag should be added and
registered in gstreamer core gsttaglist
*/
GST_LOG ("Registering tags");
gst_tag_register (GST_TAG_3GP_CLASSIFICATION, GST_TAG_FLAG_META,
G_TYPE_STRING, GST_TAG_3GP_CLASSIFICATION, "content classification",
gst_tag_merge_use_first);
GST_LOG ("Finished registering tags");
return TRUE;
}
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