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gstreamer/gst/isomp4/gstqtmux.c
Edward Hervey cca48a42c6 qtmux: Fix signed floating point values writing 
You would end up on some architectures with 0 being written out
instead of the proper value.

https://bugzilla.gnome.org/show_bug.cgi?id=649449
2011-05-05 15:10:09 +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.
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, 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 (<link linkend="GstQTMux--movie-timescale">movie-timescale</link>,
* <link linkend="GstQTMux--trak-timescale">trak-timescale</link>) 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 <link linkend="GstQTMux--faststart">faststart</link> 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 <link linkend="GstQTMux--fragment-duration">fragment-duration</link>.
* If such fragmented layout is intended for streaming purposes, then
* <link linkend="GstQTMux--streamable">streamable</link> allows foregoing to add
* index metadata (at the end of file).
*
* <link linkend="GstQTMux--dts-method">dts-method</link> allows selecting a
* method for managing input timestamps (stay tuned for 0.11 to have this
* automagically settled). The default delta/duration method should handle nice
* (aka perfect streams) just fine, but may experience problems otherwise
* (e.g. input stream with re-ordered B-frames and/or with frame dropping).
* The re-ordering approach re-assigns incoming timestamps in ascending order
* to incoming buffers and offers an alternative in such cases. In cases where
* that might fail, the remaining method can be tried, which is exact and
* according to specs, but might experience playback on not so spec-wise players.
* Note that this latter approach also requires one to enable
* <link linkend="GstQTMux--presentation-timestamp">presentation-timestamp</link>.
*
* <refsect2>
* <title>Example pipelines</title>
* |[
* gst-launch v4l2src num-buffers=500 ! video/x-raw-yuv,width=320,height=240 ! ffmpegcolorspace ! qtmux ! filesink location=video.mov
* ]|
* Records a video stream captured from a v4l2 device and muxes it into a qt file.
* </refsect2>
*
* Last reviewed on 2010-12-03
*/
/*
* 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/tag/xmpwriter.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
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 ())
/* 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_DTS_METHOD,
PROP_DO_CTTS,
};
/* some spare for header size as well */
#define MDAT_LARGE_FILE_LIMIT ((guint64) 1024 * 1024 * 1024 * 2)
#define MAX_TOLERATED_LATENESS (GST_SECOND / 10)
#define DEFAULT_MOVIE_TIMESCALE 1000
#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 FALSE
#define DEFAULT_DTS_METHOD DTS_METHOD_REORDER
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);
static void gst_qt_mux_release_pad (GstElement * element, GstPad * pad);
/* event */
static gboolean gst_qt_mux_sink_event (GstPad * pad, GstEvent * event);
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 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, *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%s",
params->prop->long_name,
(params->prop->rank == GST_RANK_NONE) ? " (deprecated)" : "");
gst_element_class_set_details_simple (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 ("audio_%d",
GST_PAD_SINK, GST_PAD_REQUEST, params->audio_sink_caps);
gst_element_class_add_pad_template (element_class, audiosinktempl);
}
if (params->video_sink_caps) {
videosinktempl = gst_pad_template_new ("video_%d",
GST_PAD_SINK, GST_PAD_REQUEST, params->video_sink_caps);
gst_element_class_add_pad_template (element_class, videosinktempl);
}
klass->format = params->prop->format;
}
static void
gst_qt_mux_class_init (GstQTMuxClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
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;
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)",
1, 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));
g_object_class_install_property (gobject_class, PROP_DTS_METHOD,
g_param_spec_enum ("dts-method", "dts-method",
"Method to determine DTS time",
GST_TYPE_QT_MUX_DTS_METHOD, DEFAULT_DTS_METHOD,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
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",
"If set to true, the output should be as if it is to be streamed "
"and hence no indexes written or duration written.",
DEFAULT_STREAMABLE,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | 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)
{
gint i;
qtpad->fourcc = 0;
qtpad->is_out_of_order = FALSE;
qtpad->have_dts = FALSE;
qtpad->sample_size = 0;
qtpad->sync = FALSE;
qtpad->last_dts = 0;
qtpad->first_ts = GST_CLOCK_TIME_NONE;
qtpad->prepare_buf_func = NULL;
qtpad->avg_bitrate = 0;
qtpad->max_bitrate = 0;
qtpad->ts_n_entries = 0;
qtpad->buf_head = 0;
qtpad->buf_tail = 0;
for (i = 0; i < G_N_ELEMENTS (qtpad->buf_entries); i++) {
if (qtpad->buf_entries[i]) {
gst_buffer_unref (qtpad->buf_entries[i]);
qtpad->buf_entries[i] = NULL;
}
}
if (qtpad->last_buf)
gst_buffer_replace (&qtpad->last_buf, NULL);
/* reference owned elsewhere */
qtpad->trak = NULL;
if (qtpad->traf) {
atom_traf_free (qtpad->traf);
qtpad->traf = NULL;
}
atom_array_clear (&qtpad->fragment_buffers);
/* reference owned elsewhere */
qtpad->tfra = 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->mdat_pos = 0;
qtmux->longest_chunk = GST_CLOCK_TIME_NONE;
qtmux->video_pads = 0;
qtmux->audio_pads = 0;
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);
}
}
}
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_function (qtmux->collect,
(GstCollectPadsFunction) GST_DEBUG_FUNCPTR (gst_qt_mux_collected), qtmux);
/* properties set to default upon construction */
/* 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;
GST_LOG_OBJECT (qtmux, "Preparing jpc buffer");
if (buf == NULL)
return NULL;
newbuf = gst_buffer_new_and_alloc (GST_BUFFER_SIZE (buf) + 8);
gst_buffer_copy_metadata (newbuf, buf, GST_BUFFER_COPY_ALL);
GST_WRITE_UINT32_BE (GST_BUFFER_DATA (newbuf), GST_BUFFER_SIZE (newbuf));
GST_WRITE_UINT32_LE (GST_BUFFER_DATA (newbuf) + 4, FOURCC_jp2c);
memcpy (GST_BUFFER_DATA (newbuf) + 8, GST_BUFFER_DATA (buf),
GST_BUFFER_SIZE (buf));
gst_buffer_unref (buf);
return newbuf;
}
static void
gst_qt_mux_add_mp4_tag (GstQTMux * qtmux, const GstTagList * list,
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_moov_add_str_tag (qtmux->moov, 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_moov_add_uint_tag (qtmux->moov, fourcc, 21, (gint) value);
break;
}
case G_TYPE_UINT:
{
guint value = 0;
if (tag2) {
/* paired unsigned integers */
guint count = 0;
if (!(gst_tag_list_get_uint (list, tag, &value) ||
gst_tag_list_get_uint (list, tag2, &count)))
break;
GST_DEBUG_OBJECT (qtmux, "Adding tag %" GST_FOURCC_FORMAT " -> %u/%u",
GST_FOURCC_ARGS (fourcc), value, count);
atom_moov_add_uint_tag (qtmux->moov, 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_moov_add_uint_tag (qtmux->moov, fourcc, 1, value);
}
break;
}
default:
g_assert_not_reached ();
break;
}
}
static void
gst_qt_mux_add_mp4_date (GstQTMux * qtmux, const GstTagList * list,
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) == GST_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);
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_moov_add_str_tag (qtmux->moov, fourcc, str);
g_free (str);
}
static void
gst_qt_mux_add_mp4_cover (GstQTMux * qtmux, const GstTagList * list,
const char *tag, const char *tag2, guint32 fourcc)
{
GValue value = { 0, };
GstBuffer *buf;
GstCaps *caps;
GstStructure *structure;
gint flags = 0;
g_return_if_fail (gst_tag_get_type (tag) == GST_TYPE_BUFFER);
if (!gst_tag_list_copy_value (&value, list, tag))
return;
buf = gst_value_get_buffer (&value);
if (!buf)
goto done;
caps = gst_buffer_get_caps (buf);
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;
gst_caps_unref (caps);
if (!flags) {
GST_WARNING_OBJECT (qtmux, "preview image format not supported");
goto done;
}
GST_DEBUG_OBJECT (qtmux, "Adding tag %" GST_FOURCC_FORMAT
" -> image size %d", GST_FOURCC_ARGS (fourcc), GST_BUFFER_SIZE (buf));
atom_moov_add_tag (qtmux->moov, fourcc, flags, GST_BUFFER_DATA (buf),
GST_BUFFER_SIZE (buf));
done:
g_value_unset (&value);
}
static void
gst_qt_mux_add_3gp_str (GstQTMux * qtmux, const GstTagList * list,
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_moov_add_3gp_str_tag (qtmux->moov, fourcc, str);
} else {
GST_DEBUG_OBJECT (qtmux, "Adding tag %" GST_FOURCC_FORMAT " -> %s/%d",
GST_FOURCC_ARGS (fourcc), str, number);
atom_moov_add_3gp_str_int_tag (qtmux->moov, fourcc, str, number);
}
g_free (str);
}
static void
gst_qt_mux_add_3gp_date (GstQTMux * qtmux, const GstTagList * list,
const char *tag, const char *tag2, guint32 fourcc)
{
GDate *date = NULL;
GDateYear year;
g_return_if_fail (gst_tag_get_type (tag) == GST_TYPE_DATE);
if (!gst_tag_list_get_date (list, tag, &date) || !date)
return;
year = g_date_get_year (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_moov_add_3gp_uint_tag (qtmux->moov, fourcc, year);
}
static void
gst_qt_mux_add_3gp_location (GstQTMux * qtmux, const GstTagList * list,
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_moov_add_3gp_tag (qtmux->moov, fourcc, ddata, size);
g_free (ddata);
}
static void
gst_qt_mux_add_3gp_keywords (GstQTMux * qtmux, const GstTagList * list,
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_moov_add_3gp_tag (qtmux->moov, 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,
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_moov_add_3gp_tag (qtmux->moov, fourcc, data, 4 + 2 + 2 + size);
g_free (data);
}
typedef void (*GstQTMuxAddTagFunc) (GstQTMux * mux, const GstTagList * list,
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 GstQTMuxAddTagFunc 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__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},
{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_moov_add_xmp_tags (qtmux->moov, 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)
{
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;
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, 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) {
const GValue *val;
GstBuffer *buf;
GstCaps *caps = NULL;
val = gst_tag_list_get_value_index (list, GST_QT_DEMUX_PRIVATE_TAG, i);
buf = (GstBuffer *) gst_value_get_mini_object (val);
if (buf && (caps = gst_buffer_get_caps (buf))) {
GstStructure *s;
const gchar *style = NULL;
GST_DEBUG_OBJECT (qtmux, "Found private tag %d/%d; size %d, caps %"
GST_PTR_FORMAT, i, num_tags, GST_BUFFER_SIZE (buf), caps);
s = gst_caps_get_structure (caps, 0);
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_moov_add_blob_tag (qtmux->moov, GST_BUFFER_DATA (buf),
GST_BUFFER_SIZE (buf));
}
}
gst_caps_unref (caps);
}
}
}
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;
GST_OBJECT_LOCK (qtmux);
tags = gst_tag_setter_get_tag_list (GST_TAG_SETTER (qtmux));
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);
gst_qt_mux_add_xmp_tags (qtmux, copy);
gst_tag_list_free (copy);
} else {
GST_DEBUG_OBJECT (qtmux, "No tags received");
}
}
static inline GstBuffer *
_gst_buffer_new_take_data (guint8 * data, guint size)
{
GstBuffer *buf;
buf = gst_buffer_new ();
GST_BUFFER_DATA (buf) = GST_BUFFER_MALLOCDATA (buf) = data;
GST_BUFFER_SIZE (buf) = size;
return buf;
}
static GstFlowReturn
gst_qt_mux_send_buffer (GstQTMux * qtmux, GstBuffer * buf, guint64 * offset,
gboolean mind_fast)
{
GstFlowReturn res;
guint8 *data;
guint size;
g_return_val_if_fail (buf != NULL, GST_FLOW_ERROR);
data = GST_BUFFER_DATA (buf);
size = GST_BUFFER_SIZE (buf);
GST_LOG_OBJECT (qtmux, "sending buffer size %d", size);
if (mind_fast && qtmux->fast_start_file) {
gint ret;
GST_LOG_OBJECT (qtmux, "to temporary file");
ret = fwrite (data, sizeof (guint8), size, qtmux->fast_start_file);
gst_buffer_unref (buf);
if (ret != size)
goto write_error;
else
res = GST_FLOW_OK;
} else {
GST_LOG_OBJECT (qtmux, "downstream");
buf = gst_buffer_make_metadata_writable (buf);
gst_buffer_set_caps (buf, GST_PAD_CAPS (qtmux->srcpad));
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) {
gint r;
const int bufsize = 4096;
buf = gst_buffer_new_and_alloc (bufsize);
r = fread (GST_BUFFER_DATA (buf), sizeof (guint8), bufsize,
qtmux->fast_start_file);
if (r == 0)
break;
GST_BUFFER_SIZE (buf) = r;
GST_LOG_OBJECT (qtmux, "Pushing buffered buffer of size %d", r);
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)
{
Atom *node_header;
GstBuffer *buf;
guint8 *data = NULL;
guint64 offset = 0;
GST_DEBUG_OBJECT (qtmux, "Sending mdat's atom header, "
"size %" G_GUINT64_FORMAT, size);
node_header = g_malloc0 (sizeof (Atom));
node_header->type = FOURCC_mdat;
if (extended) {
/* use extended size */
node_header->size = 1;
node_header->extended_size = 0;
if (size)
node_header->extended_size = size + 16;
} else {
node_header->size = size + 8;
}
size = offset = 0;
if (atom_copy_data (node_header, &data, &size, &offset) == 0)
goto serialize_error;
buf = _gst_buffer_new_take_data (data, offset);
g_free (node_header);
GST_LOG_OBJECT (qtmux, "Pushing mdat start");
return gst_qt_mux_send_buffer (qtmux, buf, off, FALSE);
/* ERRORS */
serialize_error:
{
GST_ELEMENT_ERROR (qtmux, STREAM, MUX, (NULL),
("Failed to serialize mdat"));
return GST_FLOW_ERROR;
}
}
/*
* 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)
{
GstEvent *event;
GstBuffer *buf;
gboolean large_file;
large_file = (mdat_size > MDAT_LARGE_FILE_LIMIT);
if (large_file)
mdat_pos += 8;
/* seek and rewrite the header */
event = gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_BYTES,
mdat_pos, GST_CLOCK_TIME_NONE, 0);
gst_pad_push_event (qtmux->srcpad, event);
if (large_file) {
buf = gst_buffer_new_and_alloc (sizeof (guint64));
GST_WRITE_UINT64_BE (GST_BUFFER_DATA (buf), mdat_size + 16);
} else {
guint8 *data;
buf = gst_buffer_new_and_alloc (16);
data = GST_BUFFER_DATA (buf);
GST_WRITE_UINT32_BE (data, 8);
GST_WRITE_UINT32_LE (data + 4, FOURCC_free);
GST_WRITE_UINT32_BE (data + 8, mdat_size + 8);
GST_WRITE_UINT32_LE (data + 12, FOURCC_mdat);
}
return gst_qt_mux_send_buffer (qtmux, buf, offset, FALSE);
}
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 = GST_PAD_CAPS (mux->srcpad);
caps = gst_caps_copy (GST_PAD_CAPS (mux->srcpad));
structure = gst_caps_get_structure (caps, 0);
g_value_init (&array, GST_TYPE_ARRAY);
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_IN_CAPS);
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);
}
static void
gst_qt_mux_configure_moov (GstQTMux * qtmux, guint32 * _timescale)
{
gboolean fragmented;
guint32 timescale;
GST_OBJECT_LOCK (qtmux);
timescale = qtmux->timescale;
fragmented = qtmux->fragment_sequence > 0;
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);
if (_timescale)
*_timescale = timescale;
}
static GstFlowReturn
gst_qt_mux_send_moov (GstQTMux * qtmux, guint64 * _offset, gboolean mind_fast)
{
guint64 offset = 0, size = 0;
guint8 *data;
GstBuffer *buf;
GstFlowReturn ret = GST_FLOW_OK;
/* 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;
buf = _gst_buffer_new_take_data (data, offset);
GST_DEBUG_OBJECT (qtmux, "Pushing moov atoms");
gst_qt_mux_set_header_on_caps (qtmux, buf);
ret = gst_qt_mux_send_buffer (qtmux, buf, _offset, mind_fast);
return ret;
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 GstFlowReturn
gst_qt_mux_start_file (GstQTMux * qtmux)
{
GstFlowReturn ret = GST_FLOW_OK;
GstCaps *caps;
GST_DEBUG_OBJECT (qtmux, "starting file");
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);
/* let downstream know we think in BYTES and expect to do seeking later on */
gst_pad_push_event (qtmux->srcpad,
gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_BYTES, 0, -1, 0));
/* initialize our moov recovery file */
GST_OBJECT_LOCK (qtmux);
if (qtmux->moov_recov_file_path) {
GST_DEBUG_OBJECT (qtmux, "Openning 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);
} else {
GSList *walk;
gboolean fail = FALSE;
AtomFTYP *ftyp = NULL;
GstBuffer *prefix = NULL;
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");
fail = TRUE;
}
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");
}
}
if (fail) {
/* cleanup */
fclose (qtmux->moov_recov_file);
qtmux->moov_recov_file = NULL;
GST_WARNING_OBJECT (qtmux, "An error was detected while writing to "
"recover file, moov recovery won't work");
}
}
}
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.
*/
if (qtmux->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);
if (ret != GST_FLOW_OK)
goto exit;
} else {
ret = gst_qt_mux_prepare_and_send_ftyp (qtmux);
if (ret != GST_FLOW_OK) {
goto exit;
}
/* well, it's moov pos if fragmented ... */
qtmux->mdat_pos = qtmux->header_size;
if (qtmux->fragment_duration) {
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, NULL);
gst_qt_mux_setup_metadata (qtmux);
ret = gst_qt_mux_send_moov (qtmux, &qtmux->header_size, 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)
return ret;
/* prepare index */
if (!qtmux->streamable)
qtmux->mfra = atom_mfra_new (qtmux->context);
} else {
/* extended to ensure some spare space */
ret = gst_qt_mux_send_mdat_header (qtmux, &qtmux->header_size, 0, TRUE);
}
}
exit:
return ret;
/* ERRORS */
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_stop_file (GstQTMux * qtmux)
{
gboolean ret = GST_FLOW_OK;
guint64 offset = 0, size = 0;
GSList *walk;
gboolean large_file;
guint32 timescale;
GstClockTime first_ts = GST_CLOCK_TIME_NONE;
GST_DEBUG_OBJECT (qtmux, "Updating remaining values and sending last data");
/* pushing last buffers for each pad */
for (walk = qtmux->collect->data; walk; walk = g_slist_next (walk)) {
GstCollectData *cdata = (GstCollectData *) walk->data;
GstQTPad *qtpad = (GstQTPad *) cdata;
/* send last buffer */
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));
if (!GST_CLOCK_TIME_IS_VALID (qtpad->first_ts)) {
GST_DEBUG_OBJECT (qtmux, "Pad %s has no buffers",
GST_PAD_NAME (qtpad->collect.pad));
continue;
}
/* determine max stream duration */
if (!GST_CLOCK_TIME_IS_VALID (first_ts) ||
(GST_CLOCK_TIME_IS_VALID (qtpad->first_ts) &&
qtpad->last_dts > first_ts)) {
first_ts = qtpad->last_dts;
}
}
if (qtmux->fragment_sequence) {
GstEvent *event;
if (qtmux->mfra) {
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;
} else {
/* must have been streamable; no need to write duration */
GST_DEBUG_OBJECT (qtmux, "streamable file; nothing to stop");
return GST_FLOW_OK;
}
timescale = qtmux->timescale;
/* 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 (first_ts, timescale, GST_SECOND);
GST_DEBUG_OBJECT (qtmux, "rewriting moov with mvex duration %"
GST_TIME_FORMAT, GST_TIME_ARGS (first_ts));
/* seek and rewrite the header */
event = gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_BYTES,
qtmux->mdat_pos, GST_CLOCK_TIME_NONE, 0);
gst_pad_push_event (qtmux->srcpad, event);
/* no need to seek back */
return gst_qt_mux_send_moov (qtmux, NULL, FALSE);
}
gst_qt_mux_configure_moov (qtmux, &timescale);
/* check for late streams */
first_ts = 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 (!GST_CLOCK_TIME_IS_VALID (first_ts) ||
(GST_CLOCK_TIME_IS_VALID (qtpad->first_ts) &&
qtpad->first_ts < first_ts)) {
first_ts = qtpad->first_ts;
}
}
GST_DEBUG_OBJECT (qtmux, "Media first ts selected: %" GST_TIME_FORMAT,
GST_TIME_ARGS (first_ts));
/* add EDTSs for late streams */
for (walk = qtmux->collect->data; walk; walk = g_slist_next (walk)) {
GstCollectData *cdata = (GstCollectData *) walk->data;
GstQTPad *qtpad = (GstQTPad *) cdata;
guint32 lateness;
guint32 duration;
if (GST_CLOCK_TIME_IS_VALID (qtpad->first_ts) &&
qtpad->first_ts > first_ts + MAX_TOLERATED_LATENESS) {
GST_DEBUG_OBJECT (qtmux, "Pad %s is a late stream by %" GST_TIME_FORMAT,
GST_PAD_NAME (qtpad->collect.pad),
GST_TIME_ARGS (qtpad->first_ts - first_ts));
lateness = gst_util_uint64_scale_round (qtpad->first_ts - first_ts,
timescale, GST_SECOND);
duration = qtpad->trak->tkhd.duration;
atom_trak_add_elst_entry (qtpad->trak, lateness, (guint32) - 1,
(guint32) (1 * 65536.0));
atom_trak_add_elst_entry (qtpad->trak, duration, 0,
(guint32) (1 * 65536.0));
/* need to add the empty time to the trak duration */
qtpad->trak->tkhd.duration += lateness;
}
}
/* tags into file metadata */
gst_qt_mux_setup_metadata (qtmux);
large_file = (qtmux->mdat_size > MDAT_LARGE_FILE_LIMIT);
/* 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 */
if (qtmux->fast_start_file) {
GstFlowReturn flow_ret;
offset = size = 0;
flow_ret = gst_qt_mux_prepare_and_send_ftyp (qtmux);
if (flow_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;
} else {
offset = qtmux->header_size;
}
atom_moov_chunks_add_offset (qtmux->moov, offset);
/* moov */
/* 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, 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;
/* if needed, send mdat atom and move buffered data into it */
if (qtmux->fast_start_file) {
/* mdat_size = accumulated (buffered data) */
ret = gst_qt_mux_send_mdat_header (qtmux, NULL, qtmux->mdat_size,
large_file);
if (ret != GST_FLOW_OK)
return ret;
ret = gst_qt_mux_send_buffered_data (qtmux, NULL);
if (ret != GST_FLOW_OK)
return ret;
} else {
/* 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);
/* note; no seeking back to the end of file is done,
* since we no longer write anything anyway */
}
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 %d", GST_BUFFER_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_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);
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);
}
}
/* 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;
}
/* sigh, tiny list helpers to re-order stuff */
static void
gst_qt_mux_push_ts (GstQTMux * qtmux, GstQTPad * pad, GstClockTime ts)
{
gint i;
for (i = 0; (i < QTMUX_NO_OF_TS) && (i < pad->ts_n_entries); i++) {
if (ts > pad->ts_entries[i])
break;
}
memmove (&pad->ts_entries[i + 1], &pad->ts_entries[i],
sizeof (GstClockTime) * (pad->ts_n_entries - i));
pad->ts_entries[i] = ts;
pad->ts_n_entries++;
}
/* takes ownership of @buf */
static GstBuffer *
gst_qt_mux_get_asc_buffer_ts (GstQTMux * qtmux, GstQTPad * pad, GstBuffer * buf)
{
const gint wrap = G_N_ELEMENTS (pad->buf_entries);
GstClockTime ts;
/* store buffer and ts, latter ordered */
if (buf) {
pad->buf_entries[pad->buf_tail++] = buf;
pad->buf_tail %= wrap;
gst_qt_mux_push_ts (qtmux, pad, GST_BUFFER_TIMESTAMP (buf));
}
if (pad->ts_n_entries && (!buf || pad->ts_n_entries >= QTMUX_NO_OF_TS)) {
ts = pad->ts_entries[--pad->ts_n_entries];
buf = pad->buf_entries[pad->buf_head];
pad->buf_entries[pad->buf_head++] = NULL;
pad->buf_head %= wrap;
buf = gst_buffer_make_metadata_writable (buf);
/* track original ts (= pts ?) for later */
GST_BUFFER_OFFSET_END (buf) = GST_BUFFER_TIMESTAMP (buf);
GST_BUFFER_TIMESTAMP (buf) = ts;
GST_DEBUG_OBJECT (qtmux, "next buffer uses reordered ts %" GST_TIME_FORMAT,
GST_TIME_ARGS (ts));
} else {
buf = NULL;
}
return buf;
}
/*
* 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, do_pts = FALSE;
gboolean drain = (buf == NULL);
GstFlowReturn ret = GST_FLOW_OK;
if (!pad->fourcc)
goto not_negotiated;
/* if this pad has a prepare function, call it */
if (pad->prepare_buf_func != NULL) {
buf = pad->prepare_buf_func (pad, buf, qtmux);
}
again:
last_buf = pad->last_buf;
if (G_UNLIKELY (qtmux->dts_method == DTS_METHOD_REORDER)) {
buf = gst_qt_mux_get_asc_buffer_ts (qtmux, pad, buf);
if (!buf && !last_buf) {
GST_DEBUG_OBJECT (qtmux, "no reordered buffer");
return GST_FLOW_OK;
}
}
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
pad->last_buf = buf;
goto exit;
} else
gst_buffer_ref (last_buf);
/* nasty heuristic mess to guestimate dealing with DTS/PTS,
* while also trying to stay close to input ts to preserve sync,
* so in DTS_METHOD_DD:
* - prefer using input ts where possible
* - if those detected out-of-order (*), mark as out-of-order
* - if in out-of-order, then
* - if duration available, use that as delta
* Also mind to preserve sync between streams, and adding
* durations might drift, so try to resync when we expect
* input ts == (sum of durations), which is at some keyframe input frame.
* - if no duration available, we are actually in serious trouble and need
* to hack around that, so we fail.
* To remedy failure, alternatively, in DTS_METHOD_REORDER:
* - collect some buffers and re-order timestamp,
* then process the oldest buffer with smallest timestamps.
* This should typically compensate for some codec's handywork with ts.
* ... but in case this makes ts end up where not expected, in DTS_METHOD_ASC:
* - keep each ts with its buffer and still keep a list of most recent X ts,
* use the (ascending) minimum of those as DTS (and the difference as ts delta),
* and use this DTS as a basis to obtain a (positive) CTS offset.
* This should yield exact PTS == buffer ts, but it seems not all players
* out there are aware of ctts pts ...
*
* 0.11 Phew, can we (pretty) please please sort out DTS/PTS on buffers ...
*/
if (G_LIKELY (buf) && !pad->is_out_of_order) {
if (G_LIKELY (GST_BUFFER_TIMESTAMP_IS_VALID (last_buf) &&
GST_BUFFER_TIMESTAMP_IS_VALID (buf))) {
if ((GST_BUFFER_TIMESTAMP (buf) < GST_BUFFER_TIMESTAMP (last_buf))) {
GST_DEBUG_OBJECT (qtmux, "detected out-of-order input");
pad->is_out_of_order = TRUE;
}
} else {
/* this is pretty bad */
GST_WARNING_OBJECT (qtmux, "missing input timestamp");
/* fall back to durations */
pad->is_out_of_order = TRUE;
}
}
/* would have to be some unusual input, but not impossible */
if (G_UNLIKELY (qtmux->dts_method == DTS_METHOD_REORDER &&
pad->is_out_of_order)) {
goto no_order;
}
/* fall back to duration if last buffer or
* out-of-order (determined previously), otherwise use input ts */
if (buf == NULL ||
(pad->is_out_of_order && qtmux->dts_method == DTS_METHOD_DD)) {
if (!GST_BUFFER_DURATION_IS_VALID (last_buf)) {
/* be forgiving for some possibly last upstream flushed buffer */
if (buf)
goto no_time;
GST_WARNING_OBJECT (qtmux, "no duration for last buffer");
/* iso spec recommends some small value, try 0 */
duration = 0;
} else {
duration = GST_BUFFER_DURATION (last_buf);
/* avoid drift in sum timestamps,
* so use input timestamp for suitable keyframe */
if (buf && !GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT) &&
GST_BUFFER_TIMESTAMP (buf) >= pad->last_dts) {
GST_DEBUG_OBJECT (qtmux, "resyncing out-of-order input to ts; "
"replacing %" GST_TIME_FORMAT " by %" GST_TIME_FORMAT,
GST_TIME_ARGS (pad->last_dts + duration),
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)));
duration = GST_BUFFER_TIMESTAMP (buf) - pad->last_dts;
}
}
} else if (qtmux->dts_method != DTS_METHOD_ASC) {
duration = GST_BUFFER_TIMESTAMP (buf) - GST_BUFFER_TIMESTAMP (last_buf);
} else {
GstClockTime ts;
g_assert (qtmux->dts_method == DTS_METHOD_ASC);
if (!qtmux->guess_pts)
goto need_pts;
/* add timestamp to queue; keeps in descending order */
gst_qt_mux_push_ts (qtmux, pad, GST_BUFFER_TIMESTAMP (last_buf));
/* chuck out smallest/last one if we have enough */
if (G_LIKELY (pad->ts_n_entries > QTMUX_NO_OF_TS))
pad->ts_n_entries--;
/* peek the now smallest timestamp */
ts = pad->ts_entries[pad->ts_n_entries - 1];
/* these tails are expected to be (strictly) ascending with
* large enough history */
GST_DEBUG_OBJECT (qtmux, "ASC method; base timestamp %" GST_TIME_FORMAT,
GST_TIME_ARGS (ts));
if (ts >= pad->last_dts) {
duration = ts - pad->last_dts;
} else {
/* fallback to previous value, negative ct offset might handle */
GST_WARNING_OBJECT (qtmux, "unexpected decrease in timestamp");
duration = 0;
}
/* arrange for small non-zero duration/delta << expected frame time */
ts = gst_util_uint64_scale (10, GST_SECOND,
atom_trak_get_timescale (pad->trak));
duration = MAX (duration, ts);
}
gst_buffer_replace (&pad->last_buf, buf);
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) {
/* 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 (GST_BUFFER_SIZE (last_buf) % sample_size != 0)
goto fragmented_sample;
/* note: qt raw audio storage warps it implicitly into a timewise
* perfect stream, discarding buffer times */
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);
} else {
nsamples = GST_BUFFER_SIZE (last_buf) / sample_size;
}
duration = GST_BUFFER_DURATION (last_buf) / nsamples;
/* timescale = samplerate */
scaled_duration = 1;
pad->last_dts += duration * nsamples;
} else {
nsamples = 1;
sample_size = GST_BUFFER_SIZE (last_buf);
if (pad->have_dts) {
gint64 scaled_dts;
pad->last_dts = GST_BUFFER_OFFSET_END (last_buf);
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;
}
}
chunk_offset = qtmux->mdat_size;
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;
}
/* optionally calculate ctts entry values
* (if composition-time expected different from decoding-time) */
/* really not recommended:
* - decoder typically takes care of dts/pts issues
* - in case of out-of-order, dts may only be determined as above
* (e.g. sum of duration), which may be totally different from
* buffer timestamps in case of multiple segment, non-perfect streams
* (and just perhaps maybe with some luck segment_to_running_time
* or segment_to_media_time might get near to it) */
if ((pad->have_dts || qtmux->guess_pts)) {
guint64 pts;
pts = qtmux->dts_method == DTS_METHOD_REORDER ?
GST_BUFFER_OFFSET_END (last_buf) : GST_BUFFER_TIMESTAMP (last_buf);
pts = gst_util_uint64_scale_round (pts,
atom_trak_get_timescale (pad->trak), GST_SECOND);
pts_offset = (gint64) (pts - last_dts);
do_pts = TRUE;
GST_LOG_OBJECT (qtmux, "Adding ctts entry for pad %s: %" G_GINT64_FORMAT,
GST_PAD_NAME (pad->collect.pad), pts_offset);
}
/*
* Each buffer starts a new chunk, so we can assume the buffer
* duration is the chunk duration
*/
if (GST_CLOCK_TIME_IS_VALID (duration) && (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 (duration), GST_PAD_NAME (pad->collect.pad));
qtmux->longest_chunk = duration;
}
/* if this is the first buffer, store the timestamp */
if (G_UNLIKELY (pad->first_ts == GST_CLOCK_TIME_NONE) && last_buf) {
if (GST_CLOCK_TIME_IS_VALID (GST_BUFFER_TIMESTAMP (last_buf))) {
pad->first_ts = GST_BUFFER_TIMESTAMP (last_buf);
} else {
GST_DEBUG_OBJECT (qtmux, "First buffer for pad %s has no timestamp, "
"using 0 as first timestamp", GST_PAD_NAME (pad->collect.pad));
pad->first_ts = 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));
}
/* now we go and register this buffer/sample all over */
/* 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;
}
}
if (buf)
gst_buffer_unref (buf);
if (qtmux->fragment_sequence) {
/* ensure that always sync samples are marked as such */
ret = gst_qt_mux_pad_fragment_add_buffer (qtmux, pad, last_buf,
buf == NULL, nsamples, last_dts, (gint32) scaled_duration, sample_size,
!pad->sync || sync, pts_offset);
} else {
atom_trak_add_samples (pad->trak, nsamples, (gint32) scaled_duration,
sample_size, chunk_offset, sync, pts_offset);
ret = gst_qt_mux_send_buffer (qtmux, last_buf, &qtmux->mdat_size, TRUE);
}
exit:
if (G_UNLIKELY (drain && qtmux->dts_method == DTS_METHOD_REORDER &&
ret == GST_FLOW_OK)) {
buf = NULL;
goto again;
}
return ret;
/* ERRORS */
bail:
{
if (buf)
gst_buffer_unref (buf);
gst_buffer_unref (last_buf);
return GST_FLOW_ERROR;
}
no_time:
{
GST_ELEMENT_ERROR (qtmux, STREAM, MUX, (NULL),
("Received buffer without timestamp/duration. "
"Using e.g. dts-method=reorder might help."));
goto bail;
}
no_order:
{
GST_ELEMENT_ERROR (qtmux, STREAM, MUX, (NULL),
("DTS method failed to re-order timestamps."));
goto bail;
}
need_pts:
{
GST_ELEMENT_ERROR (qtmux, STREAM, MUX, (NULL),
("Selected DTS method also needs PTS enabled."));
goto bail;
}
fragmented_sample:
{
GST_ELEMENT_ERROR (qtmux, STREAM, MUX, (NULL),
("Audio buffer contains fragmented sample."));
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;
}
}
static GstFlowReturn
gst_qt_mux_collected (GstCollectPads * pads, gpointer user_data)
{
GstFlowReturn ret = GST_FLOW_OK;
GstQTMux *qtmux = GST_QT_MUX_CAST (user_data);
GSList *walk;
GstQTPad *best_pad = NULL;
GstClockTime time, best_time = GST_CLOCK_TIME_NONE;
GstBuffer *buf;
if (G_UNLIKELY (qtmux->state == GST_QT_MUX_STATE_STARTED)) {
if ((ret = gst_qt_mux_start_file (qtmux)) != GST_FLOW_OK)
return ret;
else
qtmux->state = GST_QT_MUX_STATE_DATA;
}
if (G_UNLIKELY (qtmux->state == GST_QT_MUX_STATE_EOS))
return GST_FLOW_UNEXPECTED;
/* select the best buffer */
walk = qtmux->collect->data;
while (walk) {
GstQTPad *pad;
GstCollectData *data;
data = (GstCollectData *) walk->data;
pad = (GstQTPad *) data;
walk = g_slist_next (walk);
buf = gst_collect_pads_peek (pads, data);
if (buf == NULL) {
GST_LOG_OBJECT (qtmux, "Pad %s has no buffers",
GST_PAD_NAME (pad->collect.pad));
continue;
}
time = GST_BUFFER_TIMESTAMP (buf);
gst_buffer_unref (buf);
/* invalid should pass */
if (G_LIKELY (GST_CLOCK_TIME_IS_VALID (time))) {
time =
gst_segment_to_running_time (&data->segment, GST_FORMAT_TIME, time);
if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (time))) {
GST_DEBUG_OBJECT (qtmux, "clipping buffer on pad %s outside segment",
GST_PAD_NAME (data->pad));
buf = gst_collect_pads_pop (pads, data);
gst_buffer_unref (buf);
return GST_FLOW_OK;
}
}
if (best_pad == NULL || !GST_CLOCK_TIME_IS_VALID (time) ||
(GST_CLOCK_TIME_IS_VALID (best_time) && time < best_time)) {
best_pad = pad;
best_time = time;
}
}
if (best_pad != NULL) {
GST_LOG_OBJECT (qtmux, "selected pad %s with time %" GST_TIME_FORMAT,
GST_PAD_NAME (best_pad->collect.pad), GST_TIME_ARGS (best_time));
buf = gst_collect_pads_pop (pads, &best_pad->collect);
buf = gst_buffer_make_metadata_writable (buf);
GST_BUFFER_TIMESTAMP (buf) = best_time;
ret = gst_qt_mux_add_buffer (qtmux, best_pad, buf);
} else {
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_UNEXPECTED;
} else {
GST_WARNING_OBJECT (qtmux, "Failed to stop file: %s",
gst_flow_get_name (ret));
}
qtmux->state = GST_QT_MUX_STATE_EOS;
}
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_audio_sink_set_caps (GstPad * pad, GstCaps * caps)
{
GstQTMux *qtmux = GST_QT_MUX_CAST (gst_pad_get_parent (pad));
GstQTMuxClass *qtmux_klass = (GstQTMuxClass *) (G_OBJECT_GET_CLASS (qtmux));
GstQTPad *qtpad = NULL;
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;
GstCaps *current_caps = NULL;
/* find stream data */
qtpad = (GstQTPad *) gst_pad_get_element_private (pad);
g_assert (qtpad);
qtpad->prepare_buf_func = NULL;
/* 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) */
if (qtpad->fourcc) {
g_object_get (pad, "caps", &current_caps, NULL);
g_assert (caps != NULL);
if (!gst_qtmux_caps_is_subset_full (qtmux, current_caps, caps)) {
goto refuse_renegotiation;
}
GST_DEBUG_OBJECT (qtmux,
"pad %s accepted renegotiation to %" GST_PTR_FORMAT " from %"
GST_PTR_FORMAT, GST_PAD_NAME (pad), caps, GST_PAD_CAPS (pad));
}
GST_DEBUG_OBJECT (qtmux, "%s:%s, caps=%" GST_PTR_FORMAT,
GST_DEBUG_PAD_NAME (pad), caps);
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;
qtpad->have_dts = 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;
gint layer = -1;
gst_structure_get_int (structure, "mpegversion", &mpegversion);
switch (mpegversion) {
case 1:
gst_structure_get_int (structure, "layer", &layer);
switch (layer) {
case 3:
/* mp3 */
/* 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);
}
entry.samples_per_packet = 1152;
entry.bytes_per_sample = 2;
break;
}
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_SIZE (codec_data) < 2)
GST_WARNING_OBJECT (qtmux, "no (valid) codec_data for AAC audio");
else {
guint8 profile = GST_READ_UINT8 (GST_BUFFER_DATA (codec_data));
/* 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-int") == 0) {
gint width;
gint depth;
gint endianness;
gboolean sign;
if (!gst_structure_get_int (structure, "width", &width) ||
!gst_structure_get_int (structure, "depth", &depth) ||
!gst_structure_get_boolean (structure, "signed", &sign)) {
GST_DEBUG_OBJECT (qtmux, "broken caps, width/depth/signed field missing");
goto refuse_caps;
}
if (depth <= 8) {
endianness = G_BYTE_ORDER;
} else if (!gst_structure_get_int (structure, "endianness", &endianness)) {
GST_DEBUG_OBJECT (qtmux, "broken caps, endianness field missing");
goto refuse_caps;
}
/* spec has no place for a distinction in these */
if (width != depth) {
GST_DEBUG_OBJECT (qtmux, "width must be same as depth!");
goto refuse_caps;
}
if (sign) {
if (endianness == G_LITTLE_ENDIAN)
entry.fourcc = FOURCC_sowt;
else if (endianness == G_BIG_ENDIAN)
entry.fourcc = FOURCC_twos;
/* maximum backward compatibility; only new version for > 16 bit */
if (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 = depth;
entry.bytes_per_sample = depth / 8;
entry.samples_per_packet = 1;
entry.bytes_per_packet = depth / 8;
entry.bytes_per_frame = entry.bytes_per_packet * channels;
} else {
if (width == 8 && 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 = (depth / 8) * 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;
entry.fourcc = FOURCC_alac;
/* let's check if codec data already comes with 'alac' atom prefix */
if (!codec_data || (len = GST_BUFFER_SIZE (codec_data)) < 28) {
GST_DEBUG_OBJECT (qtmux, "broken caps, codec data missing");
goto refuse_caps;
}
if (GST_READ_UINT32_LE (GST_BUFFER_DATA (codec_data) + 4) == FOURCC_alac) {
len -= 8;
codec_config = gst_buffer_create_sub ((GstBuffer *) codec_data, 8, len);
} else {
codec_config = gst_buffer_ref ((GstBuffer *) codec_data);
}
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 (qtpad->trak, codec_config);
else
ext_atom = build_codec_data_extension (FOURCC_alac, codec_config);
/* set some more info */
entry.bytes_per_sample = 2;
entry.samples_per_packet =
GST_READ_UINT32_BE (GST_BUFFER_DATA (codec_config) + 4);
gst_buffer_unref (codec_config);
}
if (!entry.fourcc)
goto refuse_caps;
/* ok, set the pad info accordingly */
qtpad->fourcc = entry.fourcc;
qtpad->sample_size = constant_size;
atom_trak_set_audio_type (qtpad->trak, qtmux->context, &entry,
qtmux->trak_timescale ? qtmux->trak_timescale : entry.sample_rate,
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;
}
refuse_renegotiation:
{
GST_WARNING_OBJECT (qtmux,
"pad %s refused renegotiation to %" GST_PTR_FORMAT,
GST_PAD_NAME (pad), caps);
gst_object_unref (qtmux);
return FALSE;
}
}
/* scale rate up or down by factor of 10 to fit into [1000,10000] interval */
static guint32
adjust_rate (guint64 rate)
{
if (rate == 0)
return 10000;
while (rate >= 10000)
rate /= 10;
while (rate < 1000)
rate *= 10;
return (guint32) rate;
}
static gboolean
gst_qt_mux_video_sink_set_caps (GstPad * pad, GstCaps * caps)
{
GstQTMux *qtmux = GST_QT_MUX_CAST (gst_pad_get_parent (pad));
GstQTMuxClass *qtmux_klass = (GstQTMuxClass *) (G_OBJECT_GET_CLASS (qtmux));
GstQTPad *qtpad = NULL;
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;
GstCaps *current_caps = NULL;
/* find stream data */
qtpad = (GstQTPad *) gst_pad_get_element_private (pad);
g_assert (qtpad);
qtpad->prepare_buf_func = NULL;
/* 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) */
if (qtpad->fourcc) {
g_object_get (pad, "caps", &current_caps, NULL);
g_assert (caps != NULL);
if (!gst_qtmux_caps_is_subset_full (qtmux, current_caps, caps)) {
goto refuse_renegotiation;
}
GST_DEBUG_OBJECT (qtmux,
"pad %s accepted renegotiation to %" GST_PTR_FORMAT " from %"
GST_PTR_FORMAT, GST_PAD_NAME (pad), caps, GST_PAD_CAPS (pad));
}
GST_DEBUG_OBJECT (qtmux, "%s:%s, caps=%" GST_PTR_FORMAT,
GST_DEBUG_PAD_NAME (pad), caps);
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 */
rate = qtmux->trak_timescale ?
qtmux->trak_timescale : adjust_rate (framerate_num);
GST_DEBUG_OBJECT (qtmux, "Rate of video track selected: %" G_GUINT32_FORMAT,
rate);
/* 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-rgb") == 0) {
gint bpp;
entry.fourcc = FOURCC_raw_;
gst_structure_get_int (structure, "bpp", &bpp);
entry.depth = bpp;
sync = FALSE;
} else if (strcmp (mimetype, "video/x-raw-yuv") == 0) {
guint32 format = 0;
sync = FALSE;
gst_structure_get_fourcc (structure, "format", &format);
switch (format) {
case GST_MAKE_FOURCC ('U', 'Y', 'V', 'Y'):
if (depth == -1)
depth = 24;
entry.fourcc = FOURCC_2vuy;
entry.depth = depth;
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) {
/* check if we accept these caps */
if (gst_structure_has_field (structure, "stream-format")) {
const gchar *format;
const gchar *alignment;
format = gst_structure_get_string (structure, "stream-format");
alignment = gst_structure_get_string (structure, "alignment");
if (strcmp (format, "avc") != 0 || alignment == NULL ||
strcmp (alignment, "au") != 0) {
GST_WARNING_OBJECT (qtmux, "Rejecting h264 caps, qtmux only accepts "
"avc format with AU aligned samples");
goto refuse_caps;
}
} else {
GST_WARNING_OBJECT (qtmux, "no stream-format field in h264 caps");
goto refuse_caps;
}
if (!codec_data) {
GST_WARNING_OBJECT (qtmux, "no codec_data in h264 caps");
goto refuse_caps;
}
entry.fourcc = FOURCC_avc1;
if (qtpad->avg_bitrate == 0) {
gint avg_bitrate = 0;
gst_structure_get_int (structure, "bitrate", &avg_bitrate);
qtpad->avg_bitrate = avg_bitrate;
}
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-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 = GST_MAKE_FOURCC ('d', 'v', 'c', 'p');
else
entry.fourcc = GST_MAKE_FOURCC ('d', 'v', 'c', ' ');
break;
case 50:
if (pal)
entry.fourcc = GST_MAKE_FOURCC ('d', 'v', '5', 'p');
else
entry.fourcc = GST_MAKE_FOURCC ('d', 'v', '5', 'n');
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/x-j2c") == 0 ||
strcmp (mimetype, "image/x-jpc") == 0) {
guint32 fourcc;
const GValue *cmap_array;
const GValue *cdef_array;
gint ncomp = 0;
gint fields = 1;
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);
gst_structure_get_int (structure, "fields", &fields);
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;
if (gst_structure_get_fourcc (structure, "fourcc", &fourcc) &&
(ext_atom =
build_jp2h_extension (qtpad->trak, width, height, fourcc, ncomp,
cmap_array, cdef_array)) != NULL) {
ext_atom_list = g_list_append (ext_atom_list, ext_atom);
ext_atom = build_fiel_extension (fields);
if (ext_atom)
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_VP80;
sync = FALSE;
} else if (strcmp (mimetype, "video/x-qt-part") == 0) {
guint32 fourcc;
gst_structure_get_fourcc (structure, "format", &fourcc);
entry.fourcc = fourcc;
qtpad->have_dts = TRUE;
} else if (strcmp (mimetype, "video/x-mp4-part") == 0) {
guint32 fourcc;
gst_structure_get_fourcc (structure, "format", &fourcc);
entry.fourcc = fourcc;
qtpad->have_dts = TRUE;
}
if (!entry.fourcc)
goto refuse_caps;
/* ok, set the pad info accordingly */
qtpad->fourcc = entry.fourcc;
qtpad->sync = sync;
atom_trak_set_video_type (qtpad->trak, qtmux->context, &entry, rate,
ext_atom_list);
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;
}
refuse_renegotiation:
{
GST_WARNING_OBJECT (qtmux,
"pad %s refused renegotiation to %" GST_PTR_FORMAT " from %"
GST_PTR_FORMAT, GST_PAD_NAME (pad), caps, GST_PAD_CAPS (pad));
gst_object_unref (qtmux);
return FALSE;
}
}
static gboolean
gst_qt_mux_sink_event (GstPad * pad, GstEvent * event)
{
gboolean ret;
GstQTMux *qtmux;
guint32 avg_bitrate = 0, max_bitrate = 0;
qtmux = GST_QT_MUX_CAST (gst_pad_get_parent (pad));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_TAG:{
GstTagList *list;
GstTagSetter *setter = GST_TAG_SETTER (qtmux);
GstTagMergeMode mode;
GST_OBJECT_LOCK (qtmux);
mode = gst_tag_setter_get_tag_merge_mode (setter);
GST_DEBUG_OBJECT (qtmux, "received tag event");
gst_event_parse_tag (event, &list);
gst_tag_setter_merge_tags (setter, list, mode);
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;
}
break;
}
default:
break;
}
ret = qtmux->collect_event (pad, event);
gst_object_unref (qtmux);
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;
}
}
gst_collect_pads_remove_pad (mux->collect, pad);
}
static GstPad *
gst_qt_mux_request_new_pad (GstElement * element,
GstPadTemplate * templ, const gchar * req_name)
{
GstElementClass *klass = GST_ELEMENT_GET_CLASS (element);
GstQTMux *qtmux = GST_QT_MUX_CAST (element);
GstQTPad *collect_pad;
GstPad *newpad;
gboolean audio;
gchar *name;
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_%d")) {
audio = TRUE;
name = g_strdup_printf ("audio_%02d", qtmux->audio_pads++);
} else if (templ == gst_element_class_get_pad_template (klass, "video_%d")) {
audio = FALSE;
name = g_strdup_printf ("video_%02d", qtmux->video_pads++);
} else
goto wrong_template;
GST_DEBUG_OBJECT (qtmux, "Requested pad: %s", name);
/* create pad and add to collections */
newpad = gst_pad_new_from_template (templ, name);
g_free (name);
collect_pad = (GstQTPad *)
gst_collect_pads_add_pad_full (qtmux->collect, newpad, sizeof (GstQTPad),
(GstCollectDataDestroyNotify) (gst_qt_mux_pad_reset));
/* 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 */
if (audio)
gst_pad_set_setcaps_function (newpad,
GST_DEBUG_FUNCPTR (gst_qt_mux_audio_sink_set_caps));
else
gst_pad_set_setcaps_function (newpad,
GST_DEBUG_FUNCPTR (gst_qt_mux_video_sink_set_caps));
/* FIXME: hacked way to override/extend the event function of
* GstCollectPads; because it sets its own event function giving the
* element no access to events.
*/
qtmux->collect_event = (GstPadEventFunction) GST_PAD_EVENTFUNC (newpad);
gst_pad_set_event_function (newpad,
GST_DEBUG_FUNCPTR (gst_qt_mux_sink_event));
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;
case PROP_DTS_METHOD:
g_value_set_enum (value, qtmux->dts_method);
break;
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;
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;
case PROP_DTS_METHOD:
qtmux->dts_method = g_value_get_enum (value);
break;
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:
qtmux->streamable = g_value_get_boolean (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
};
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;
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);
/* 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);
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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