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gstreamer/gst/matroska/matroska-mux.c
Branko Subasic ddba77ea6e matroskamux: allow resolutions above 4096 
Modify the caps string to allow width and height greater than 4096.
There is no need to restrict it since the matroska format allows the
width and height values to be up to eight bytes long.

https://bugzilla.gnome.org/show_bug.cgi?id=773582
2016-10-27 14:01:55 +01:00

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/* GStreamer Matroska muxer/demuxer
* (c) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
* (c) 2005 Michal Benes <michal.benes@xeris.cz>
* (c) 2008 Sebastian Dröge <sebastian.droege@collabora.co.uk>
* (c) 2011 Mark Nauwelaerts <mark.nauwelaerts@collabora.co.uk>
*
* matroska-mux.c: matroska file/stream muxer
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/* TODO: - check everywhere that we don't write invalid values
* - make sure timestamps are correctly scaled everywhere
*/
/**
* SECTION:element-matroskamux
*
* matroskamux muxes different input streams into a Matroska file.
*
* <refsect2>
* <title>Example launch line</title>
* |[
* gst-launch-1.0 -v filesrc location=/path/to/mp3 ! mpegaudioparse ! matroskamux name=mux ! filesink location=test.mkv filesrc location=/path/to/theora.ogg ! oggdemux ! theoraparse ! mux.
* ]| This pipeline muxes an MP3 file and a Ogg Theora video into a Matroska file.
* |[
* gst-launch-1.0 -v audiotestsrc num-buffers=100 ! audioconvert ! vorbisenc ! matroskamux ! filesink location=test.mka
* ]| This pipeline muxes a 440Hz sine wave encoded with the Vorbis codec into a Matroska file.
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <math.h>
#include <stdio.h>
#include <string.h>
#include <gst/audio/audio.h>
#include <gst/riff/riff-media.h>
#include <gst/tag/tag.h>
#include <gst/pbutils/codec-utils.h>
#include "matroska-mux.h"
#include "matroska-ids.h"
#define GST_MATROSKA_MUX_CHAPLANG "und"
GST_DEBUG_CATEGORY_STATIC (matroskamux_debug);
#define GST_CAT_DEFAULT matroskamux_debug
enum
{
PROP_0,
PROP_WRITING_APP,
PROP_DOCTYPE_VERSION,
PROP_MIN_INDEX_INTERVAL,
PROP_STREAMABLE,
PROP_TIMECODESCALE
};
#define DEFAULT_DOCTYPE_VERSION 2
#define DEFAULT_WRITING_APP "GStreamer Matroska muxer"
#define DEFAULT_MIN_INDEX_INTERVAL 0
#define DEFAULT_STREAMABLE FALSE
#define DEFAULT_TIMECODESCALE GST_MSECOND
/* WAVEFORMATEX is gst_riff_strf_auds + an extra guint16 extension size */
#define WAVEFORMATEX_SIZE (2 + sizeof (gst_riff_strf_auds))
static GstStaticPadTemplate src_templ = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-matroska; video/x-matroska-3d; audio/x-matroska")
);
#define COMMON_VIDEO_CAPS \
"width = (int) [ 16, MAX ], " \
"height = (int) [ 16, MAX ] "
/* FIXME:
* * require codec data, etc as needed
*/
static GstStaticPadTemplate videosink_templ =
GST_STATIC_PAD_TEMPLATE ("video_%u",
GST_PAD_SINK,
GST_PAD_REQUEST,
GST_STATIC_CAPS ("video/mpeg, "
"mpegversion = (int) { 1, 2, 4 }, "
"systemstream = (boolean) false, "
COMMON_VIDEO_CAPS "; "
"video/x-h264, stream-format=avc, alignment=au, "
COMMON_VIDEO_CAPS "; "
"video/x-h265, stream-format=hvc1, alignment=au, "
COMMON_VIDEO_CAPS "; "
"video/x-divx, "
COMMON_VIDEO_CAPS "; "
"video/x-huffyuv, "
COMMON_VIDEO_CAPS "; "
"video/x-dv, "
COMMON_VIDEO_CAPS "; "
"video/x-h263, "
COMMON_VIDEO_CAPS "; "
"video/x-msmpeg, "
COMMON_VIDEO_CAPS "; "
"image/jpeg, "
COMMON_VIDEO_CAPS "; "
"video/x-theora; "
"video/x-dirac, "
COMMON_VIDEO_CAPS "; "
"video/x-pn-realvideo, "
"rmversion = (int) [1, 4], "
COMMON_VIDEO_CAPS "; "
"video/x-vp8, "
COMMON_VIDEO_CAPS "; "
"video/x-vp9, "
COMMON_VIDEO_CAPS "; "
"video/x-raw, "
"format = (string) { YUY2, I420, YV12, UYVY, AYUV, GRAY8, BGR, RGB }, "
COMMON_VIDEO_CAPS "; "
"video/x-prores, "
COMMON_VIDEO_CAPS "; "
"video/x-wmv, " "wmvversion = (int) [ 1, 3 ], " COMMON_VIDEO_CAPS)
);
#define COMMON_AUDIO_CAPS \
"channels = (int) [ 1, MAX ], " \
"rate = (int) [ 1, MAX ]"
/* FIXME:
* * require codec data, etc as needed
*/
static GstStaticPadTemplate audiosink_templ =
GST_STATIC_PAD_TEMPLATE ("audio_%u",
GST_PAD_SINK,
GST_PAD_REQUEST,
GST_STATIC_CAPS ("audio/mpeg, "
"mpegversion = (int) 1, "
"layer = (int) [ 1, 3 ], "
COMMON_AUDIO_CAPS "; "
"audio/mpeg, "
"mpegversion = (int) { 2, 4 }, "
"stream-format = (string) raw, "
COMMON_AUDIO_CAPS "; "
"audio/x-ac3, "
COMMON_AUDIO_CAPS "; "
"audio/x-eac3, "
COMMON_AUDIO_CAPS "; "
"audio/x-dts, "
COMMON_AUDIO_CAPS "; "
"audio/x-vorbis, "
COMMON_AUDIO_CAPS "; "
"audio/x-flac, "
COMMON_AUDIO_CAPS "; "
"audio/x-opus; "
"audio/x-speex, "
COMMON_AUDIO_CAPS "; "
"audio/x-raw, "
"format = (string) { U8, S16BE, S16LE, S24BE, S24LE, S32BE, S32LE, F32LE, F64LE }, "
"layout = (string) interleaved, "
COMMON_AUDIO_CAPS ";"
"audio/x-tta, "
"width = (int) { 8, 16, 24 }, "
"channels = (int) { 1, 2 }, " "rate = (int) [ 8000, 96000 ]; "
"audio/x-pn-realaudio, "
"raversion = (int) { 1, 2, 8 }, " COMMON_AUDIO_CAPS "; "
"audio/x-wma, " "wmaversion = (int) [ 1, 3 ], "
"block_align = (int) [ 0, 65535 ], bitrate = (int) [ 0, 524288 ], "
COMMON_AUDIO_CAPS ";"
"audio/x-alaw, "
"channels = (int) {1, 2}, " "rate = (int) [ 8000, 192000 ]; "
"audio/x-mulaw, "
"channels = (int) {1, 2}, " "rate = (int) [ 8000, 192000 ]; "
"audio/x-adpcm, "
"layout = (string)dvi, "
"block_align = (int)[64, 8192], "
"channels = (int) { 1, 2 }, " "rate = (int) [ 8000, 96000 ]; "
"audio/x-adpcm, "
"layout = (string)g726, " "channels = (int)1," "rate = (int)8000; ")
);
static GstStaticPadTemplate subtitlesink_templ =
GST_STATIC_PAD_TEMPLATE ("subtitle_%u",
GST_PAD_SINK,
GST_PAD_REQUEST,
GST_STATIC_CAPS ("subtitle/x-kate; "
"text/x-raw, format=utf8; application/x-ssa; application/x-ass; "
"application/x-usf; subpicture/x-dvd; "
"application/x-subtitle-unknown")
);
static gpointer parent_class; /* NULL */
/* Matroska muxer destructor */
static void gst_matroska_mux_class_init (GstMatroskaMuxClass * klass);
static void gst_matroska_mux_init (GstMatroskaMux * mux, gpointer g_class);
static void gst_matroska_mux_finalize (GObject * object);
/* Pads collected callback */
static GstFlowReturn gst_matroska_mux_handle_buffer (GstCollectPads * pads,
GstCollectData * data, GstBuffer * buf, gpointer user_data);
static gboolean gst_matroska_mux_handle_sink_event (GstCollectPads * pads,
GstCollectData * data, GstEvent * event, gpointer user_data);
/* pad functions */
static gboolean gst_matroska_mux_handle_src_event (GstPad * pad,
GstObject * parent, GstEvent * event);
static GstPad *gst_matroska_mux_request_new_pad (GstElement * element,
GstPadTemplate * templ, const gchar * name, const GstCaps * caps);
static void gst_matroska_mux_release_pad (GstElement * element, GstPad * pad);
/* gst internal change state handler */
static GstStateChangeReturn
gst_matroska_mux_change_state (GstElement * element, GstStateChange transition);
/* gobject bla bla */
static void gst_matroska_mux_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_matroska_mux_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
/* reset muxer */
static void gst_matroska_mux_reset (GstElement * element);
/* uid generation */
static guint64 gst_matroska_mux_create_uid (GstMatroskaMux * mux);
static gboolean theora_streamheader_to_codecdata (const GValue * streamheader,
GstMatroskaTrackContext * context);
static gboolean vorbis_streamheader_to_codecdata (const GValue * streamheader,
GstMatroskaTrackContext * context);
static gboolean speex_streamheader_to_codecdata (const GValue * streamheader,
GstMatroskaTrackContext * context);
static gboolean kate_streamheader_to_codecdata (const GValue * streamheader,
GstMatroskaTrackContext * context);
static gboolean flac_streamheader_to_codecdata (const GValue * streamheader,
GstMatroskaTrackContext * context);
static void
gst_matroska_mux_write_simple_tag (const GstTagList * list, const gchar * tag,
gpointer data);
static gboolean gst_matroska_mux_tag_list_is_empty (const GstTagList * list);
static void gst_matroska_mux_write_streams_tags (GstMatroskaMux * mux);
static gboolean gst_matroska_mux_streams_have_tags (GstMatroskaMux * mux);
/* Cannot use boilerplate macros here because we need the full init function
* signature with the additional class argument, so we use the right template
* for the sink caps */
GType
gst_matroska_mux_get_type (void)
{
static GType object_type; /* 0 */
if (object_type == 0) {
static const GTypeInfo object_info = {
sizeof (GstMatroskaMuxClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) gst_matroska_mux_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GstMatroskaMux),
0, /* n_preallocs */
(GInstanceInitFunc) gst_matroska_mux_init
};
const GInterfaceInfo iface_info = { NULL };
object_type = g_type_register_static (GST_TYPE_ELEMENT,
"GstMatroskaMux", &object_info, (GTypeFlags) 0);
g_type_add_interface_static (object_type, GST_TYPE_TAG_SETTER, &iface_info);
g_type_add_interface_static (object_type, GST_TYPE_TOC_SETTER, &iface_info);
}
return object_type;
}
static void
gst_matroska_mux_class_init (GstMatroskaMuxClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
gst_element_class_add_static_pad_template (gstelement_class,
&videosink_templ);
gst_element_class_add_static_pad_template (gstelement_class,
&audiosink_templ);
gst_element_class_add_static_pad_template (gstelement_class,
&subtitlesink_templ);
gst_element_class_add_static_pad_template (gstelement_class, &src_templ);
gst_element_class_set_static_metadata (gstelement_class, "Matroska muxer",
"Codec/Muxer",
"Muxes video/audio/subtitle streams into a matroska stream",
"GStreamer maintainers <gstreamer-devel@lists.freedesktop.org>");
GST_DEBUG_CATEGORY_INIT (matroskamux_debug, "matroskamux", 0,
"Matroska muxer");
gobject_class->finalize = gst_matroska_mux_finalize;
gobject_class->get_property = gst_matroska_mux_get_property;
gobject_class->set_property = gst_matroska_mux_set_property;
g_object_class_install_property (gobject_class, PROP_WRITING_APP,
g_param_spec_string ("writing-app", "Writing application.",
"The name the application that creates the matroska file.",
NULL, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_DOCTYPE_VERSION,
g_param_spec_int ("version", "DocType version",
"This parameter determines what Matroska features can be used.",
1, 2, DEFAULT_DOCTYPE_VERSION,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_MIN_INDEX_INTERVAL,
g_param_spec_int64 ("min-index-interval", "Minimum time between index "
"entries", "An index entry is created every so many nanoseconds.",
0, G_MAXINT64, DEFAULT_MIN_INDEX_INTERVAL,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_STREAMABLE,
g_param_spec_boolean ("streamable", "Determines whether output should "
"be 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_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_TIMECODESCALE,
g_param_spec_int64 ("timecodescale", "Timecode Scale",
"TimecodeScale used to calculate the Raw Timecode of a Block", 1,
GST_SECOND, DEFAULT_TIMECODESCALE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
gstelement_class->change_state =
GST_DEBUG_FUNCPTR (gst_matroska_mux_change_state);
gstelement_class->request_new_pad =
GST_DEBUG_FUNCPTR (gst_matroska_mux_request_new_pad);
gstelement_class->release_pad =
GST_DEBUG_FUNCPTR (gst_matroska_mux_release_pad);
parent_class = g_type_class_peek_parent (klass);
}
/*
* Start of pad option handler code
*/
#define DEFAULT_PAD_FRAME_DURATION TRUE
enum
{
PROP_PAD_0,
PROP_PAD_FRAME_DURATION
};
typedef struct
{
GstPad parent;
gboolean frame_duration;
gboolean frame_duration_user;
} GstMatroskamuxPad;
typedef GstPadClass GstMatroskamuxPadClass;
GType gst_matroskamux_pad_get_type (void);
G_DEFINE_TYPE (GstMatroskamuxPad, gst_matroskamux_pad, GST_TYPE_PAD);
#define GST_TYPE_MATROSKAMUX_PAD (gst_matroskamux_pad_get_type())
#define GST_MATROSKAMUX_PAD(pad) (G_TYPE_CHECK_INSTANCE_CAST((pad),GST_TYPE_MATROSKAMUX_PAD,GstMatroskamuxPad))
#define GST_MATROSKAMUX_PAD_CAST(pad) ((GstMatroskamuxPad *) pad)
#define GST_IS_MATROSKAMUX_PAD(pad) (G_TYPE_CHECK_INSTANCE_TYPE((pad),GST_TYPE_MATROSKAMUX_PAD))
static void
gst_matroskamux_pad_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstMatroskamuxPad *pad = GST_MATROSKAMUX_PAD (object);
switch (prop_id) {
case PROP_PAD_FRAME_DURATION:
g_value_set_boolean (value, pad->frame_duration);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_matroskamux_pad_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstMatroskamuxPad *pad = GST_MATROSKAMUX_PAD (object);
switch (prop_id) {
case PROP_PAD_FRAME_DURATION:
pad->frame_duration = g_value_get_boolean (value);
pad->frame_duration_user = TRUE;
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_matroskamux_pad_class_init (GstMatroskamuxPadClass * klass)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
gobject_class->set_property = gst_matroskamux_pad_set_property;
gobject_class->get_property = gst_matroskamux_pad_get_property;
g_object_class_install_property (gobject_class, PROP_PAD_FRAME_DURATION,
g_param_spec_boolean ("frame-duration", "Frame duration",
"Default frame duration", DEFAULT_PAD_FRAME_DURATION,
G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS));
}
static void
gst_matroskamux_pad_init (GstMatroskamuxPad * pad)
{
pad->frame_duration = DEFAULT_PAD_FRAME_DURATION;
pad->frame_duration_user = FALSE;
}
/*
* End of pad option handler code
**/
static void
gst_matroska_mux_init (GstMatroskaMux * mux, gpointer g_class)
{
GstPadTemplate *templ;
templ =
gst_element_class_get_pad_template (GST_ELEMENT_CLASS (g_class), "src");
mux->srcpad = gst_pad_new_from_template (templ, "src");
gst_pad_set_event_function (mux->srcpad, gst_matroska_mux_handle_src_event);
gst_element_add_pad (GST_ELEMENT (mux), mux->srcpad);
gst_pad_use_fixed_caps (mux->srcpad);
mux->collect = gst_collect_pads_new ();
gst_collect_pads_set_clip_function (mux->collect,
GST_DEBUG_FUNCPTR (gst_collect_pads_clip_running_time), mux);
gst_collect_pads_set_buffer_function (mux->collect,
GST_DEBUG_FUNCPTR (gst_matroska_mux_handle_buffer), mux);
gst_collect_pads_set_event_function (mux->collect,
GST_DEBUG_FUNCPTR (gst_matroska_mux_handle_sink_event), mux);
mux->ebml_write = gst_ebml_write_new (mux->srcpad);
mux->doctype = GST_MATROSKA_DOCTYPE_MATROSKA;
/* property defaults */
mux->doctype_version = DEFAULT_DOCTYPE_VERSION;
mux->writing_app = g_strdup (DEFAULT_WRITING_APP);
mux->min_index_interval = DEFAULT_MIN_INDEX_INTERVAL;
mux->ebml_write->streamable = DEFAULT_STREAMABLE;
mux->time_scale = DEFAULT_TIMECODESCALE;
/* initialize internal variables */
mux->index = NULL;
mux->num_streams = 0;
mux->num_a_streams = 0;
mux->num_t_streams = 0;
mux->num_v_streams = 0;
/* create used uid list */
mux->used_uids = g_array_sized_new (FALSE, FALSE, sizeof (guint64), 10);
/* initialize remaining variables */
gst_matroska_mux_reset (GST_ELEMENT (mux));
}
/**
* gst_matroska_mux_finalize:
* @object: #GstMatroskaMux that should be finalized.
*
* Finalize matroska muxer.
*/
static void
gst_matroska_mux_finalize (GObject * object)
{
GstMatroskaMux *mux = GST_MATROSKA_MUX (object);
gst_event_replace (&mux->force_key_unit_event, NULL);
gst_object_unref (mux->collect);
gst_object_unref (mux->ebml_write);
g_free (mux->writing_app);
g_array_free (mux->used_uids, TRUE);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
/**
* gst_matroska_mux_create_uid:
* @mux: #GstMatroskaMux to generate UID for.
*
* Generate new unused track UID.
*
* Returns: New track UID.
*/
static guint64
gst_matroska_mux_create_uid (GstMatroskaMux * mux)
{
guint64 uid = 0;
while (!uid) {
guint i;
uid = (((guint64) g_random_int ()) << 32) | g_random_int ();
for (i = 0; i < mux->used_uids->len; i++) {
if (g_array_index (mux->used_uids, guint64, i) == uid) {
uid = 0;
break;
}
}
g_array_append_val (mux->used_uids, uid);
}
return uid;
}
/**
* gst_matroska_pad_reset:
* @collect_pad: the #GstMatroskaPad
*
* Reset and/or release resources of a matroska collect pad.
*/
static void
gst_matroska_pad_reset (GstMatroskaPad * collect_pad, gboolean full)
{
gchar *name = NULL;
GstMatroskaTrackType type = 0;
/* free track information */
if (collect_pad->track != NULL) {
/* retrieve for optional later use */
name = collect_pad->track->name;
type = collect_pad->track->type;
/* extra for video */
if (type == GST_MATROSKA_TRACK_TYPE_VIDEO) {
GstMatroskaTrackVideoContext *ctx =
(GstMatroskaTrackVideoContext *) collect_pad->track;
if (ctx->dirac_unit) {
gst_buffer_unref (ctx->dirac_unit);
ctx->dirac_unit = NULL;
}
}
g_free (collect_pad->track->codec_id);
g_free (collect_pad->track->codec_name);
if (full)
g_free (collect_pad->track->name);
g_free (collect_pad->track->language);
g_free (collect_pad->track->codec_priv);
g_free (collect_pad->track);
collect_pad->track = NULL;
if (collect_pad->tags) {
gst_tag_list_unref (collect_pad->tags);
collect_pad->tags = NULL;
}
}
if (!full && type != 0) {
GstMatroskaTrackContext *context;
/* create a fresh context */
switch (type) {
case GST_MATROSKA_TRACK_TYPE_VIDEO:
context = (GstMatroskaTrackContext *)
g_new0 (GstMatroskaTrackVideoContext, 1);
break;
case GST_MATROSKA_TRACK_TYPE_AUDIO:
context = (GstMatroskaTrackContext *)
g_new0 (GstMatroskaTrackAudioContext, 1);
break;
case GST_MATROSKA_TRACK_TYPE_SUBTITLE:
context = (GstMatroskaTrackContext *)
g_new0 (GstMatroskaTrackSubtitleContext, 1);
break;
default:
g_assert_not_reached ();
return;
}
context->type = type;
context->name = name;
context->uid = gst_matroska_mux_create_uid (collect_pad->mux);
/* TODO: check default values for the context */
context->flags = GST_MATROSKA_TRACK_ENABLED | GST_MATROSKA_TRACK_DEFAULT;
collect_pad->track = context;
collect_pad->start_ts = GST_CLOCK_TIME_NONE;
collect_pad->end_ts = GST_CLOCK_TIME_NONE;
collect_pad->tags = gst_tag_list_new_empty ();
gst_tag_list_set_scope (collect_pad->tags, GST_TAG_SCOPE_STREAM);
}
}
/**
* gst_matroska_pad_free:
* @collect_pad: the #GstMatroskaPad
*
* Release resources of a matroska collect pad.
*/
static void
gst_matroska_pad_free (GstPad * collect_pad)
{
gst_matroska_pad_reset ((GstMatroskaPad *) collect_pad, TRUE);
}
/**
* gst_matroska_mux_reset:
* @element: #GstMatroskaMux that should be reseted.
*
* Reset matroska muxer back to initial state.
*/
static void
gst_matroska_mux_reset (GstElement * element)
{
GstMatroskaMux *mux = GST_MATROSKA_MUX (element);
GSList *walk;
/* reset EBML write */
gst_ebml_write_reset (mux->ebml_write);
/* reset input */
mux->state = GST_MATROSKA_MUX_STATE_START;
/* clean up existing streams */
for (walk = mux->collect->data; walk; walk = g_slist_next (walk)) {
GstMatroskaPad *collect_pad;
collect_pad = (GstMatroskaPad *) walk->data;
/* reset collect pad to pristine state */
gst_matroska_pad_reset (collect_pad, FALSE);
}
/* reset indexes */
mux->num_indexes = 0;
g_free (mux->index);
mux->index = NULL;
/* reset timers */
mux->max_cluster_duration = G_MAXINT16 * mux->time_scale;
mux->duration = 0;
/* reset cluster */
mux->cluster = 0;
mux->cluster_time = 0;
mux->cluster_pos = 0;
mux->prev_cluster_size = 0;
/* reset tags */
gst_tag_setter_reset_tags (GST_TAG_SETTER (mux));
mux->tags_pos = 0;
/* reset chapters */
gst_toc_setter_reset (GST_TOC_SETTER (mux));
mux->chapters_pos = 0;
/* clear used uids */
if (mux->used_uids->len > 0) {
g_array_remove_range (mux->used_uids, 0, mux->used_uids->len);
}
}
/**
* gst_matroska_mux_handle_src_event:
* @pad: Pad which received the event.
* @event: Received event.
*
* handle events - copied from oggmux without understanding
*
* Returns: #TRUE on success.
*/
static gboolean
gst_matroska_mux_handle_src_event (GstPad * pad, GstObject * parent,
GstEvent * event)
{
GstEventType type;
type = event ? GST_EVENT_TYPE (event) : GST_EVENT_UNKNOWN;
switch (type) {
case GST_EVENT_SEEK:
/* disable seeking for now */
return FALSE;
default:
break;
}
return gst_pad_event_default (pad, parent, event);
}
static void
gst_matroska_mux_free_codec_priv (GstMatroskaTrackContext * context)
{
if (context->codec_priv != NULL) {
g_free (context->codec_priv);
context->codec_priv = NULL;
context->codec_priv_size = 0;
}
}
static void
gst_matroska_mux_build_vobsub_private (GstMatroskaTrackContext * context,
const guint * clut)
{
gchar *clutv[17];
gchar *sclut;
gint i;
guint32 col;
gdouble y, u, v;
guint8 r, g, b;
/* produce comma-separated list in hex format */
for (i = 0; i < 16; ++i) {
col = clut[i];
/* replicate vobsub's slightly off RGB conversion calculation */
y = (((col >> 16) & 0xff) - 16) * 255 / 219;
u = ((col >> 8) & 0xff) - 128;
v = (col & 0xff) - 128;
r = CLAMP (1.0 * y + 1.4022 * u, 0, 255);
g = CLAMP (1.0 * y - 0.3456 * u - 0.7145 * v, 0, 255);
b = CLAMP (1.0 * y + 1.7710 * v, 0, 255);
clutv[i] = g_strdup_printf ("%02x%02x%02x", r, g, b);
}
clutv[i] = NULL;
sclut = g_strjoinv (",", clutv);
/* build codec private; only palette for now */
gst_matroska_mux_free_codec_priv (context);
context->codec_priv = (guint8 *) g_strdup_printf ("palette: %s", sclut);
/* include terminating 0 */
context->codec_priv_size = strlen ((gchar *) context->codec_priv) + 1;
g_free (sclut);
for (i = 0; i < 16; ++i) {
g_free (clutv[i]);
}
}
/**
* gst_matroska_mux_handle_sink_event:
* @pad: Pad which received the event.
* @event: Received event.
*
* handle events - informational ones like tags
*
* Returns: #TRUE on success.
*/
static gboolean
gst_matroska_mux_handle_sink_event (GstCollectPads * pads,
GstCollectData * data, GstEvent * event, gpointer user_data)
{
GstMatroskaPad *collect_pad;
GstMatroskaTrackContext *context;
GstMatroskaMux *mux;
GstPad *pad;
GstTagList *list;
gboolean ret = TRUE;
mux = GST_MATROSKA_MUX (user_data);
collect_pad = (GstMatroskaPad *) data;
pad = data->pad;
context = collect_pad->track;
g_assert (context);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_CAPS:{
GstCaps *caps;
collect_pad = (GstMatroskaPad *) gst_pad_get_element_private (pad);
gst_event_parse_caps (event, &caps);
ret = collect_pad->capsfunc (pad, caps);
gst_event_unref (event);
event = NULL;
break;
}
case GST_EVENT_TAG:{
gchar *lang = NULL;
GST_DEBUG_OBJECT (mux, "received tag event");
gst_event_parse_tag (event, &list);
/* Matroska wants ISO 639-2B code, taglist most likely contains 639-1 */
if (gst_tag_list_get_string (list, GST_TAG_LANGUAGE_CODE, &lang)) {
const gchar *lang_code;
lang_code = gst_tag_get_language_code_iso_639_2B (lang);
if (lang_code) {
GST_INFO_OBJECT (pad, "Setting language to '%s'", lang_code);
g_free (context->language);
context->language = g_strdup (lang_code);
} else {
GST_WARNING_OBJECT (pad, "Did not get language code for '%s'", lang);
}
g_free (lang);
}
/* FIXME: what about stream-specific tags? */
if (gst_tag_list_get_scope (list) == GST_TAG_SCOPE_GLOBAL) {
gst_tag_setter_merge_tags (GST_TAG_SETTER (mux), list,
gst_tag_setter_get_tag_merge_mode (GST_TAG_SETTER (mux)));
} else {
gst_tag_list_insert (collect_pad->tags, list, GST_TAG_MERGE_REPLACE);
}
gst_event_unref (event);
/* handled this, don't want collectpads to forward it downstream */
event = NULL;
ret = TRUE;
break;
}
case GST_EVENT_TOC:{
GstToc *toc, *old_toc;
if (mux->chapters_pos > 0)
break;
GST_DEBUG_OBJECT (mux, "received toc event");
gst_event_parse_toc (event, &toc, NULL);
if (toc != NULL) {
old_toc = gst_toc_setter_get_toc (GST_TOC_SETTER (mux));
if (old_toc != NULL) {
if (old_toc != toc)
GST_INFO_OBJECT (pad, "Replacing TOC with a new one");
gst_toc_unref (old_toc);
}
gst_toc_setter_set_toc (GST_TOC_SETTER (mux), toc);
gst_toc_unref (toc);
}
gst_event_unref (event);
/* handled this, don't want collectpads to forward it downstream */
event = NULL;
break;
}
case GST_EVENT_CUSTOM_DOWNSTREAM:
case GST_EVENT_CUSTOM_DOWNSTREAM_STICKY:{
const GstStructure *structure;
structure = gst_event_get_structure (event);
if (gst_structure_has_name (structure, "GstForceKeyUnit")) {
gst_event_replace (&mux->force_key_unit_event, NULL);
mux->force_key_unit_event = event;
event = NULL;
} else if (gst_structure_has_name (structure, "application/x-gst-dvd") &&
!strcmp ("dvd-spu-clut-change",
gst_structure_get_string (structure, "event"))) {
gchar name[16];
gint i, value;
guint clut[16];
GST_DEBUG_OBJECT (pad, "New DVD colour table received");
if (context->type != GST_MATROSKA_TRACK_TYPE_SUBTITLE) {
GST_DEBUG_OBJECT (pad, "... discarding");
break;
}
/* first transform event data into table form */
for (i = 0; i < 16; i++) {
g_snprintf (name, sizeof (name), "clut%02d", i);
if (!gst_structure_get_int (structure, name, &value)) {
GST_ERROR_OBJECT (mux, "dvd-spu-clut-change event did not "
"contain %s field", name);
goto break_hard;
}
clut[i] = value;
}
/* transform into private data for stream; text form */
gst_matroska_mux_build_vobsub_private (context, clut);
}
}
/* fall through */
default:
break;
}
break_hard:
if (event != NULL)
return gst_collect_pads_event_default (pads, data, event, FALSE);
return ret;
}
static void
gst_matroska_mux_set_codec_id (GstMatroskaTrackContext * context,
const char *id)
{
g_assert (context && id);
g_free (context->codec_id);
context->codec_id = g_strdup (id);
}
/**
* gst_matroska_mux_video_pad_setcaps:
* @pad: Pad which got the caps.
* @caps: New caps.
*
* Setcaps function for video sink pad.
*
* Returns: #TRUE on success.
*/
static gboolean
gst_matroska_mux_video_pad_setcaps (GstPad * pad, GstCaps * caps)
{
GstMatroskaTrackContext *context = NULL;
GstMatroskaTrackVideoContext *videocontext;
GstMatroskaMux *mux;
GstMatroskaPad *collect_pad;
GstStructure *structure;
const gchar *mimetype;
const gchar *interlace_mode, *s;
const GValue *value = NULL;
GstBuffer *codec_buf = NULL;
gint width, height, pixel_width, pixel_height;
gint fps_d, fps_n;
mux = GST_MATROSKA_MUX (GST_PAD_PARENT (pad));
/* find context */
collect_pad = (GstMatroskaPad *) gst_pad_get_element_private (pad);
g_assert (collect_pad);
context = collect_pad->track;
g_assert (context);
g_assert (context->type == GST_MATROSKA_TRACK_TYPE_VIDEO);
videocontext = (GstMatroskaTrackVideoContext *) context;
/* gst -> matroska ID'ing */
structure = gst_caps_get_structure (caps, 0);
mimetype = gst_structure_get_name (structure);
interlace_mode = gst_structure_get_string (structure, "interlace-mode");
if (interlace_mode != NULL && strcmp (interlace_mode, "progressive") != 0)
context->flags |= GST_MATROSKA_VIDEOTRACK_INTERLACED;
if (!strcmp (mimetype, "video/x-theora")) {
/* we'll extract the details later from the theora identification header */
goto skip_details;
}
/* get general properties */
/* spec says it is mandatory */
if (!gst_structure_get_int (structure, "width", &width) ||
!gst_structure_get_int (structure, "height", &height))
goto refuse_caps;
videocontext->pixel_width = width;
videocontext->pixel_height = height;
if (GST_MATROSKAMUX_PAD_CAST (pad)->frame_duration
&& gst_structure_get_fraction (structure, "framerate", &fps_n, &fps_d)
&& fps_n > 0) {
context->default_duration =
gst_util_uint64_scale_int (GST_SECOND, fps_d, fps_n);
GST_LOG_OBJECT (pad, "default duration = %" GST_TIME_FORMAT,
GST_TIME_ARGS (context->default_duration));
} else {
context->default_duration = 0;
}
if (gst_structure_get_fraction (structure, "pixel-aspect-ratio",
&pixel_width, &pixel_height)) {
if (pixel_width > pixel_height) {
videocontext->display_width = width * pixel_width / pixel_height;
videocontext->display_height = height;
} else if (pixel_width < pixel_height) {
videocontext->display_width = width;
videocontext->display_height = height * pixel_height / pixel_width;
} else {
videocontext->display_width = 0;
videocontext->display_height = 0;
}
} else {
videocontext->display_width = 0;
videocontext->display_height = 0;
}
/* Collect stereoscopic info, if any */
if ((s = gst_structure_get_string (structure, "multiview-mode")))
videocontext->multiview_mode =
gst_video_multiview_mode_from_caps_string (s);
gst_structure_get_flagset (structure, "multiview-flags",
&videocontext->multiview_flags, NULL);
skip_details:
videocontext->asr_mode = GST_MATROSKA_ASPECT_RATIO_MODE_FREE;
videocontext->fourcc = 0;
/* TODO: - check if we handle all codecs by the spec, i.e. codec private
* data and other settings
* - add new formats
*/
/* extract codec_data, may turn out needed */
value = gst_structure_get_value (structure, "codec_data");
if (value)
codec_buf = (GstBuffer *) gst_value_get_buffer (value);
/* find type */
if (!strcmp (mimetype, "video/x-raw")) {
const gchar *fstr;
gst_matroska_mux_set_codec_id (context,
GST_MATROSKA_CODEC_ID_VIDEO_UNCOMPRESSED);
fstr = gst_structure_get_string (structure, "format");
if (fstr) {
if (strlen (fstr) == 4)
videocontext->fourcc = GST_STR_FOURCC (fstr);
else if (!strcmp (fstr, "GRAY8"))
videocontext->fourcc = GST_MAKE_FOURCC ('Y', '8', '0', '0');
else if (!strcmp (fstr, "BGR"))
videocontext->fourcc = GST_MAKE_FOURCC ('B', 'G', 'R', 24);
else if (!strcmp (fstr, "RGB"))
videocontext->fourcc = GST_MAKE_FOURCC ('R', 'G', 'B', 24);
}
} else if (!strcmp (mimetype, "video/x-huffyuv") /* MS/VfW compatibility cases */
||!strcmp (mimetype, "video/x-divx")
|| !strcmp (mimetype, "video/x-dv")
|| !strcmp (mimetype, "video/x-h263")
|| !strcmp (mimetype, "video/x-msmpeg")
|| !strcmp (mimetype, "video/x-wmv")
|| !strcmp (mimetype, "image/jpeg")) {
gst_riff_strf_vids *bih;
gint size = sizeof (gst_riff_strf_vids);
guint32 fourcc = 0;
if (!strcmp (mimetype, "video/x-huffyuv"))
fourcc = GST_MAKE_FOURCC ('H', 'F', 'Y', 'U');
else if (!strcmp (mimetype, "video/x-dv"))
fourcc = GST_MAKE_FOURCC ('D', 'V', 'S', 'D');
else if (!strcmp (mimetype, "video/x-h263"))
fourcc = GST_MAKE_FOURCC ('H', '2', '6', '3');
else if (!strcmp (mimetype, "video/x-divx")) {
gint divxversion;
gst_structure_get_int (structure, "divxversion", &divxversion);
switch (divxversion) {
case 3:
fourcc = GST_MAKE_FOURCC ('D', 'I', 'V', '3');
break;
case 4:
fourcc = GST_MAKE_FOURCC ('D', 'I', 'V', 'X');
break;
case 5:
fourcc = GST_MAKE_FOURCC ('D', 'X', '5', '0');
break;
}
} else if (!strcmp (mimetype, "video/x-msmpeg")) {
gint msmpegversion;
gst_structure_get_int (structure, "msmpegversion", &msmpegversion);
switch (msmpegversion) {
case 41:
fourcc = GST_MAKE_FOURCC ('M', 'P', 'G', '4');
break;
case 42:
fourcc = GST_MAKE_FOURCC ('M', 'P', '4', '2');
break;
case 43:
goto msmpeg43;
break;
}
} else if (!strcmp (mimetype, "video/x-wmv")) {
gint wmvversion;
const gchar *fstr;
fstr = gst_structure_get_string (structure, "format");
if (fstr && strlen (fstr) == 4) {
fourcc = GST_STR_FOURCC (fstr);
} else if (gst_structure_get_int (structure, "wmvversion", &wmvversion)) {
if (wmvversion == 2) {
fourcc = GST_MAKE_FOURCC ('W', 'M', 'V', '2');
} else if (wmvversion == 1) {
fourcc = GST_MAKE_FOURCC ('W', 'M', 'V', '1');
} else if (wmvversion == 3) {
fourcc = GST_MAKE_FOURCC ('W', 'M', 'V', '3');
}
}
} else if (!strcmp (mimetype, "image/jpeg")) {
fourcc = GST_MAKE_FOURCC ('M', 'J', 'P', 'G');
}
if (!fourcc)
goto refuse_caps;
bih = g_new0 (gst_riff_strf_vids, 1);
GST_WRITE_UINT32_LE (&bih->size, size);
GST_WRITE_UINT32_LE (&bih->width, videocontext->pixel_width);
GST_WRITE_UINT32_LE (&bih->height, videocontext->pixel_height);
GST_WRITE_UINT32_LE (&bih->compression, fourcc);
GST_WRITE_UINT16_LE (&bih->planes, (guint16) 1);
GST_WRITE_UINT16_LE (&bih->bit_cnt, (guint16) 24);
GST_WRITE_UINT32_LE (&bih->image_size, videocontext->pixel_width *
videocontext->pixel_height * 3);
/* process codec private/initialization data, if any */
if (codec_buf) {
size += gst_buffer_get_size (codec_buf);
bih = g_realloc (bih, size);
GST_WRITE_UINT32_LE (&bih->size, size);
gst_buffer_extract (codec_buf, 0,
(guint8 *) bih + sizeof (gst_riff_strf_vids), -1);
}
gst_matroska_mux_set_codec_id (context,
GST_MATROSKA_CODEC_ID_VIDEO_VFW_FOURCC);
gst_matroska_mux_free_codec_priv (context);
context->codec_priv = (gpointer) bih;
context->codec_priv_size = size;
context->dts_only = TRUE;
} else if (!strcmp (mimetype, "video/x-h264")) {
gst_matroska_mux_set_codec_id (context,
GST_MATROSKA_CODEC_ID_VIDEO_MPEG4_AVC);
gst_matroska_mux_free_codec_priv (context);
/* Create avcC header */
if (codec_buf != NULL) {
context->codec_priv_size = gst_buffer_get_size (codec_buf);
context->codec_priv = g_malloc0 (context->codec_priv_size);
gst_buffer_extract (codec_buf, 0, context->codec_priv, -1);
}
} else if (!strcmp (mimetype, "video/x-h265")) {
gst_matroska_mux_set_codec_id (context,
GST_MATROSKA_CODEC_ID_VIDEO_MPEGH_HEVC);
gst_matroska_mux_free_codec_priv (context);
/* Create hvcC header */
if (codec_buf != NULL) {
context->codec_priv_size = gst_buffer_get_size (codec_buf);
context->codec_priv = g_malloc0 (context->codec_priv_size);
gst_buffer_extract (codec_buf, 0, context->codec_priv, -1);
}
} else if (!strcmp (mimetype, "video/x-theora")) {
const GValue *streamheader;
gst_matroska_mux_set_codec_id (context, GST_MATROSKA_CODEC_ID_VIDEO_THEORA);
gst_matroska_mux_free_codec_priv (context);
streamheader = gst_structure_get_value (structure, "streamheader");
if (!theora_streamheader_to_codecdata (streamheader, context)) {
GST_ELEMENT_ERROR (mux, STREAM, MUX, (NULL),
("theora stream headers missing or malformed"));
goto refuse_caps;
}
} else if (!strcmp (mimetype, "video/x-dirac")) {
gst_matroska_mux_set_codec_id (context, GST_MATROSKA_CODEC_ID_VIDEO_DIRAC);
} else if (!strcmp (mimetype, "video/x-vp8")) {
gst_matroska_mux_set_codec_id (context, GST_MATROSKA_CODEC_ID_VIDEO_VP8);
} else if (!strcmp (mimetype, "video/x-vp9")) {
gst_matroska_mux_set_codec_id (context, GST_MATROSKA_CODEC_ID_VIDEO_VP9);
} else if (!strcmp (mimetype, "video/mpeg")) {
gint mpegversion;
gst_structure_get_int (structure, "mpegversion", &mpegversion);
switch (mpegversion) {
case 1:
gst_matroska_mux_set_codec_id (context,
GST_MATROSKA_CODEC_ID_VIDEO_MPEG1);
break;
case 2:
gst_matroska_mux_set_codec_id (context,
GST_MATROSKA_CODEC_ID_VIDEO_MPEG2);
break;
case 4:
gst_matroska_mux_set_codec_id (context,
GST_MATROSKA_CODEC_ID_VIDEO_MPEG4_ASP);
break;
default:
goto refuse_caps;
}
/* global headers may be in codec data */
if (codec_buf != NULL) {
gst_matroska_mux_free_codec_priv (context);
context->codec_priv_size = gst_buffer_get_size (codec_buf);
context->codec_priv = g_malloc0 (context->codec_priv_size);
gst_buffer_extract (codec_buf, 0, context->codec_priv, -1);
}
} else if (!strcmp (mimetype, "video/x-msmpeg")) {
msmpeg43:
/* can only make it here if preceding case verified it was version 3 */
gst_matroska_mux_set_codec_id (context,
GST_MATROSKA_CODEC_ID_VIDEO_MSMPEG4V3);
} else if (!strcmp (mimetype, "video/x-pn-realvideo")) {
gint rmversion;
const GValue *mdpr_data;
gst_structure_get_int (structure, "rmversion", &rmversion);
switch (rmversion) {
case 1:
gst_matroska_mux_set_codec_id (context,
GST_MATROSKA_CODEC_ID_VIDEO_REALVIDEO1);
break;
case 2:
gst_matroska_mux_set_codec_id (context,
GST_MATROSKA_CODEC_ID_VIDEO_REALVIDEO2);
break;
case 3:
gst_matroska_mux_set_codec_id (context,
GST_MATROSKA_CODEC_ID_VIDEO_REALVIDEO3);
break;
case 4:
gst_matroska_mux_set_codec_id (context,
GST_MATROSKA_CODEC_ID_VIDEO_REALVIDEO4);
break;
default:
goto refuse_caps;
}
mdpr_data = gst_structure_get_value (structure, "mdpr_data");
if (mdpr_data != NULL) {
guint8 *priv_data = NULL;
guint priv_data_size = 0;
GstBuffer *codec_data_buf = g_value_peek_pointer (mdpr_data);
priv_data_size = gst_buffer_get_size (codec_data_buf);
priv_data = g_malloc0 (priv_data_size);
gst_buffer_extract (codec_data_buf, 0, priv_data, -1);
gst_matroska_mux_free_codec_priv (context);
context->codec_priv = priv_data;
context->codec_priv_size = priv_data_size;
}
} else if (strcmp (mimetype, "video/x-prores") == 0) {
const gchar *variant;
gst_matroska_mux_free_codec_priv (context);
variant = gst_structure_get_string (structure, "format");
if (!variant || !g_strcmp0 (variant, "standard"))
context->codec_priv = g_strdup ("apcn");
else if (!g_strcmp0 (variant, "hq"))
context->codec_priv = g_strdup ("apch");
else if (!g_strcmp0 (variant, "lt"))
context->codec_priv = g_strdup ("apcs");
else if (!g_strcmp0 (variant, "proxy"))
context->codec_priv = g_strdup ("apco");
else if (!g_strcmp0 (variant, "4444"))
context->codec_priv = g_strdup ("ap4h");
else {
GST_WARNING_OBJECT (mux, "Unhandled prores format: %s", variant);
goto refuse_caps;
}
context->codec_priv_size = sizeof (guint32);
gst_matroska_mux_set_codec_id (context, GST_MATROSKA_CODEC_ID_VIDEO_PRORES);
}
return TRUE;
/* ERRORS */
refuse_caps:
{
GST_WARNING_OBJECT (mux, "pad %s refused caps %" GST_PTR_FORMAT,
GST_PAD_NAME (pad), caps);
return FALSE;
}
}
/* N > 0 to expect a particular number of headers, negative if the
number of headers is variable */
static gboolean
xiphN_streamheader_to_codecdata (const GValue * streamheader,
GstMatroskaTrackContext * context, GstBuffer ** p_buf0, int N)
{
GstBuffer **buf = NULL;
GArray *bufarr;
guint8 *priv_data;
guint bufi, i, offset, priv_data_size;
if (streamheader == NULL)
goto no_stream_headers;
if (G_VALUE_TYPE (streamheader) != GST_TYPE_ARRAY)
goto wrong_type;
bufarr = g_value_peek_pointer (streamheader);
if (bufarr->len <= 0 || bufarr->len > 255) /* at least one header, and count stored in a byte */
goto wrong_count;
if (N > 0 && bufarr->len != N)
goto wrong_count;
context->xiph_headers_to_skip = bufarr->len;
buf = (GstBuffer **) g_malloc0 (sizeof (GstBuffer *) * bufarr->len);
for (i = 0; i < bufarr->len; i++) {
GValue *bufval = &g_array_index (bufarr, GValue, i);
if (G_VALUE_TYPE (bufval) != GST_TYPE_BUFFER) {
g_free (buf);
goto wrong_content_type;
}
buf[i] = g_value_peek_pointer (bufval);
}
priv_data_size = 1;
if (bufarr->len > 0) {
for (i = 0; i < bufarr->len - 1; i++) {
priv_data_size += gst_buffer_get_size (buf[i]) / 0xff + 1;
}
}
for (i = 0; i < bufarr->len; ++i) {
priv_data_size += gst_buffer_get_size (buf[i]);
}
priv_data = g_malloc0 (priv_data_size);
priv_data[0] = bufarr->len - 1;
offset = 1;
if (bufarr->len > 0) {
for (bufi = 0; bufi < bufarr->len - 1; bufi++) {
for (i = 0; i < gst_buffer_get_size (buf[bufi]) / 0xff; ++i) {
priv_data[offset++] = 0xff;
}
priv_data[offset++] = gst_buffer_get_size (buf[bufi]) % 0xff;
}
}
for (i = 0; i < bufarr->len; ++i) {
gst_buffer_extract (buf[i], 0, priv_data + offset, -1);
offset += gst_buffer_get_size (buf[i]);
}
gst_matroska_mux_free_codec_priv (context);
context->codec_priv = priv_data;
context->codec_priv_size = priv_data_size;
if (p_buf0)
*p_buf0 = gst_buffer_ref (buf[0]);
g_free (buf);
return TRUE;
/* ERRORS */
no_stream_headers:
{
GST_WARNING ("required streamheaders missing in sink caps!");
return FALSE;
}
wrong_type:
{
GST_WARNING ("streamheaders are not a GST_TYPE_ARRAY, but a %s",
G_VALUE_TYPE_NAME (streamheader));
return FALSE;
}
wrong_count:
{
GST_WARNING ("got %u streamheaders, not %d as expected", bufarr->len, N);
return FALSE;
}
wrong_content_type:
{
GST_WARNING ("streamheaders array does not contain GstBuffers");
return FALSE;
}
}
static gboolean
vorbis_streamheader_to_codecdata (const GValue * streamheader,
GstMatroskaTrackContext * context)
{
GstBuffer *buf0 = NULL;
if (!xiphN_streamheader_to_codecdata (streamheader, context, &buf0, 3))
return FALSE;
if (buf0 == NULL || gst_buffer_get_size (buf0) < 1 + 6 + 4) {
GST_WARNING ("First vorbis header too small, ignoring");
} else {
if (gst_buffer_memcmp (buf0, 1, "vorbis", 6) == 0) {
GstMatroskaTrackAudioContext *audiocontext;
GstMapInfo map;
guint8 *hdr;
gst_buffer_map (buf0, &map, GST_MAP_READ);
hdr = map.data + 1 + 6 + 4;
audiocontext = (GstMatroskaTrackAudioContext *) context;
audiocontext->channels = GST_READ_UINT8 (hdr);
audiocontext->samplerate = GST_READ_UINT32_LE (hdr + 1);
gst_buffer_unmap (buf0, &map);
}
}
if (buf0)
gst_buffer_unref (buf0);
return TRUE;
}
static gboolean
theora_streamheader_to_codecdata (const GValue * streamheader,
GstMatroskaTrackContext * context)
{
GstBuffer *buf0 = NULL;
if (!xiphN_streamheader_to_codecdata (streamheader, context, &buf0, 3))
return FALSE;
if (buf0 == NULL || gst_buffer_get_size (buf0) < 1 + 6 + 26) {
GST_WARNING ("First theora header too small, ignoring");
} else if (gst_buffer_memcmp (buf0, 0, "\200theora\003\002", 9) != 0) {
GST_WARNING ("First header not a theora identification header, ignoring");
} else {
GstMatroskaTrackVideoContext *videocontext;
guint fps_num, fps_denom, par_num, par_denom;
GstMapInfo map;
guint8 *hdr;
gst_buffer_map (buf0, &map, GST_MAP_READ);
hdr = map.data + 1 + 6 + 3 + 2 + 2;
videocontext = (GstMatroskaTrackVideoContext *) context;
videocontext->pixel_width = GST_READ_UINT32_BE (hdr) >> 8;
videocontext->pixel_height = GST_READ_UINT32_BE (hdr + 3) >> 8;
hdr += 3 + 3 + 1 + 1;
fps_num = GST_READ_UINT32_BE (hdr);
fps_denom = GST_READ_UINT32_BE (hdr + 4);
context->default_duration = gst_util_uint64_scale_int (GST_SECOND,
fps_denom, fps_num);
hdr += 4 + 4;
par_num = GST_READ_UINT32_BE (hdr) >> 8;
par_denom = GST_READ_UINT32_BE (hdr + 3) >> 8;
if (par_num > 0 && par_denom > 0) {
if (par_num > par_denom) {
videocontext->display_width =
videocontext->pixel_width * par_num / par_denom;
videocontext->display_height = videocontext->pixel_height;
} else if (par_num < par_denom) {
videocontext->display_width = videocontext->pixel_width;
videocontext->display_height =
videocontext->pixel_height * par_denom / par_num;
} else {
videocontext->display_width = 0;
videocontext->display_height = 0;
}
} else {
videocontext->display_width = 0;
videocontext->display_height = 0;
}
gst_buffer_unmap (buf0, &map);
}
if (buf0)
gst_buffer_unref (buf0);
return TRUE;
}
static gboolean
kate_streamheader_to_codecdata (const GValue * streamheader,
GstMatroskaTrackContext * context)
{
GstBuffer *buf0 = NULL;
if (!xiphN_streamheader_to_codecdata (streamheader, context, &buf0, -1))
return FALSE;
if (buf0 == NULL || gst_buffer_get_size (buf0) < 64) { /* Kate ID header is 64 bytes */
GST_WARNING ("First kate header too small, ignoring");
} else if (gst_buffer_memcmp (buf0, 0, "\200kate\0\0\0", 8) != 0) {
GST_WARNING ("First header not a kate identification header, ignoring");
}
if (buf0)
gst_buffer_unref (buf0);
return TRUE;
}
static gboolean
flac_streamheader_to_codecdata (const GValue * streamheader,
GstMatroskaTrackContext * context)
{
GArray *bufarr;
gint i;
GValue *bufval;
GstBuffer *buffer;
if (streamheader == NULL || G_VALUE_TYPE (streamheader) != GST_TYPE_ARRAY) {
GST_WARNING ("No or invalid streamheader field in the caps");
return FALSE;
}
bufarr = g_value_peek_pointer (streamheader);
if (bufarr->len < 2) {
GST_WARNING ("Too few headers in streamheader field");
return FALSE;
}
context->xiph_headers_to_skip = bufarr->len + 1;
bufval = &g_array_index (bufarr, GValue, 0);
if (G_VALUE_TYPE (bufval) != GST_TYPE_BUFFER) {
GST_WARNING ("streamheaders array does not contain GstBuffers");
return FALSE;
}
buffer = g_value_peek_pointer (bufval);
/* Need at least OggFLAC mapping header, fLaC marker and STREAMINFO block */
if (gst_buffer_get_size (buffer) < 9 + 4 + 4 + 34
|| gst_buffer_memcmp (buffer, 1, "FLAC", 4) != 0
|| gst_buffer_memcmp (buffer, 9, "fLaC", 4) != 0) {
GST_WARNING ("Invalid streamheader for FLAC");
return FALSE;
}
gst_matroska_mux_free_codec_priv (context);
context->codec_priv_size = gst_buffer_get_size (buffer) - 9;
context->codec_priv = g_malloc (context->codec_priv_size);
gst_buffer_extract (buffer, 9, context->codec_priv, -1);
for (i = 1; i < bufarr->len; i++) {
guint old_size;
bufval = &g_array_index (bufarr, GValue, i);
if (G_VALUE_TYPE (bufval) != GST_TYPE_BUFFER) {
gst_matroska_mux_free_codec_priv (context);
GST_WARNING ("streamheaders array does not contain GstBuffers");
return FALSE;
}
buffer = g_value_peek_pointer (bufval);
old_size = context->codec_priv_size;
context->codec_priv_size += gst_buffer_get_size (buffer);
context->codec_priv = g_realloc (context->codec_priv,
context->codec_priv_size);
gst_buffer_extract (buffer, 0,
(guint8 *) context->codec_priv + old_size, -1);
}
return TRUE;
}
static gboolean
speex_streamheader_to_codecdata (const GValue * streamheader,
GstMatroskaTrackContext * context)
{
GArray *bufarr;
GValue *bufval;
GstBuffer *buffer;
guint old_size;
if (streamheader == NULL || G_VALUE_TYPE (streamheader) != GST_TYPE_ARRAY) {
GST_WARNING ("No or invalid streamheader field in the caps");
return FALSE;
}
bufarr = g_value_peek_pointer (streamheader);
if (bufarr->len != 2) {
GST_WARNING ("Too few headers in streamheader field");
return FALSE;
}
context->xiph_headers_to_skip = bufarr->len + 1;
bufval = &g_array_index (bufarr, GValue, 0);
if (G_VALUE_TYPE (bufval) != GST_TYPE_BUFFER) {
GST_WARNING ("streamheaders array does not contain GstBuffers");
return FALSE;
}
buffer = g_value_peek_pointer (bufval);
if (gst_buffer_get_size (buffer) < 80
|| gst_buffer_memcmp (buffer, 0, "Speex ", 8) != 0) {
GST_WARNING ("Invalid streamheader for Speex");
return FALSE;
}
gst_matroska_mux_free_codec_priv (context);
context->codec_priv_size = gst_buffer_get_size (buffer);
context->codec_priv = g_malloc (context->codec_priv_size);
gst_buffer_extract (buffer, 0, context->codec_priv, -1);
bufval = &g_array_index (bufarr, GValue, 1);
if (G_VALUE_TYPE (bufval) != GST_TYPE_BUFFER) {
gst_matroska_mux_free_codec_priv (context);
GST_WARNING ("streamheaders array does not contain GstBuffers");
return FALSE;
}
buffer = g_value_peek_pointer (bufval);
old_size = context->codec_priv_size;
context->codec_priv_size += gst_buffer_get_size (buffer);
context->codec_priv = g_realloc (context->codec_priv,
context->codec_priv_size);
gst_buffer_extract (buffer, 0, (guint8 *) context->codec_priv + old_size, -1);
return TRUE;
}
static gboolean
opus_streamheader_to_codecdata (const GValue * streamheader,
GstMatroskaTrackContext * context)
{
GArray *bufarr;
GValue *bufval;
GstBuffer *buf;
if (G_VALUE_TYPE (streamheader) != GST_TYPE_ARRAY)
goto wrong_type;
bufarr = g_value_peek_pointer (streamheader);
if (bufarr->len != 1 && bufarr->len != 2) /* one header, and count stored in a byte */
goto wrong_count;
/* Opus headers are not in-band */
context->xiph_headers_to_skip = 0;
bufval = &g_array_index (bufarr, GValue, 0);
if (G_VALUE_TYPE (bufval) != GST_TYPE_BUFFER) {
goto wrong_content_type;
}
buf = g_value_peek_pointer (bufval);
gst_matroska_mux_free_codec_priv (context);
context->codec_priv_size = gst_buffer_get_size (buf);
context->codec_priv = g_malloc0 (context->codec_priv_size);
gst_buffer_extract (buf, 0, context->codec_priv, -1);
context->codec_delay =
GST_READ_UINT16_LE ((guint8 *) context->codec_priv + 10);
context->codec_delay =
gst_util_uint64_scale_round (context->codec_delay, GST_SECOND, 48000);
context->seek_preroll = 80 * GST_MSECOND;
return TRUE;
/* ERRORS */
wrong_type:
{
GST_WARNING ("streamheaders are not a GST_TYPE_ARRAY, but a %s",
G_VALUE_TYPE_NAME (streamheader));
return FALSE;
}
wrong_count:
{
GST_WARNING ("got %u streamheaders, not 1 or 2 as expected", bufarr->len);
return FALSE;
}
wrong_content_type:
{
GST_WARNING ("streamheaders array does not contain GstBuffers");
return FALSE;
}
}
static gboolean
opus_make_codecdata (GstMatroskaTrackContext * context, GstCaps * caps)
{
guint32 rate;
guint8 channels;
guint8 channel_mapping_family;
guint8 stream_count, coupled_count, channel_mapping[256];
GstBuffer *buffer;
GstMapInfo map;
/* Opus headers are not in-band */
context->xiph_headers_to_skip = 0;
context->codec_delay = 0;
context->seek_preroll = 80 * GST_MSECOND;
if (!gst_codec_utils_opus_parse_caps (caps, &rate, &channels,
&channel_mapping_family, &stream_count, &coupled_count,
channel_mapping)) {
GST_WARNING ("Failed to parse caps for Opus");
return FALSE;
}
buffer =
gst_codec_utils_opus_create_header (rate, channels,
channel_mapping_family, stream_count, coupled_count, channel_mapping, 0,
0);
if (!buffer) {
GST_WARNING ("Failed to create Opus header from caps");
return FALSE;
}
gst_buffer_map (buffer, &map, GST_MAP_READ);
context->codec_priv_size = map.size;
context->codec_priv = g_malloc (context->codec_priv_size);
memcpy (context->codec_priv, map.data, map.size);
gst_buffer_unmap (buffer, &map);
gst_buffer_unref (buffer);
return TRUE;
}
/**
* gst_matroska_mux_audio_pad_setcaps:
* @pad: Pad which got the caps.
* @caps: New caps.
*
* Setcaps function for audio sink pad.
*
* Returns: #TRUE on success.
*/
static gboolean
gst_matroska_mux_audio_pad_setcaps (GstPad * pad, GstCaps * caps)
{
GstMatroskaTrackContext *context = NULL;
GstMatroskaTrackAudioContext *audiocontext;
GstMatroskaMux *mux;
GstMatroskaPad *collect_pad;
const gchar *mimetype;
gint samplerate = 0, channels = 0;
GstStructure *structure;
const GValue *codec_data = NULL;
GstBuffer *buf = NULL;
const gchar *stream_format = NULL;
mux = GST_MATROSKA_MUX (GST_PAD_PARENT (pad));
/* find context */
collect_pad = (GstMatroskaPad *) gst_pad_get_element_private (pad);
g_assert (collect_pad);
context = collect_pad->track;
g_assert (context);
g_assert (context->type == GST_MATROSKA_TRACK_TYPE_AUDIO);
audiocontext = (GstMatroskaTrackAudioContext *) context;
structure = gst_caps_get_structure (caps, 0);
mimetype = gst_structure_get_name (structure);
/* general setup */
gst_structure_get_int (structure, "rate", &samplerate);
gst_structure_get_int (structure, "channels", &channels);
audiocontext->samplerate = samplerate;
audiocontext->channels = channels;
audiocontext->bitdepth = 0;
context->default_duration = 0;
codec_data = gst_structure_get_value (structure, "codec_data");
if (codec_data)
buf = gst_value_get_buffer (codec_data);
/* TODO: - check if we handle all codecs by the spec, i.e. codec private
* data and other settings
* - add new formats
*/
if (!strcmp (mimetype, "audio/mpeg")) {
gint mpegversion = 0;
gst_structure_get_int (structure, "mpegversion", &mpegversion);
switch (mpegversion) {
case 1:{
gint layer;
gint version = 1;
gint spf;
gst_structure_get_int (structure, "layer", &layer);
if (!gst_structure_get_int (structure, "mpegaudioversion", &version)) {
GST_WARNING_OBJECT (mux,
"Unable to determine MPEG audio version, assuming 1");
version = 1;
}
if (layer == 1)
spf = 384;
else if (layer == 2)
spf = 1152;
else if (version == 2)
spf = 576;
else
spf = 1152;
context->default_duration =
gst_util_uint64_scale (GST_SECOND, spf, audiocontext->samplerate);
switch (layer) {
case 1:
gst_matroska_mux_set_codec_id (context,
GST_MATROSKA_CODEC_ID_AUDIO_MPEG1_L1);
break;
case 2:
gst_matroska_mux_set_codec_id (context,
GST_MATROSKA_CODEC_ID_AUDIO_MPEG1_L2);
break;
case 3:
gst_matroska_mux_set_codec_id (context,
GST_MATROSKA_CODEC_ID_AUDIO_MPEG1_L3);
break;
default:
goto refuse_caps;
}
break;
}
case 2:
case 4:
stream_format = gst_structure_get_string (structure, "stream-format");
/* check this is raw aac */
if (stream_format) {
if (strcmp (stream_format, "raw") != 0) {
GST_WARNING_OBJECT (mux, "AAC stream-format must be 'raw', not %s",
stream_format);
}
} else {
GST_WARNING_OBJECT (mux, "AAC stream-format not specified, "
"assuming 'raw'");
}
if (buf) {
gst_matroska_mux_set_codec_id (context,
GST_MATROSKA_CODEC_ID_AUDIO_AAC);
context->codec_priv_size = gst_buffer_get_size (buf);
context->codec_priv = g_malloc (context->codec_priv_size);
gst_buffer_extract (buf, 0, context->codec_priv,
context->codec_priv_size);
} else {
GST_DEBUG_OBJECT (mux, "no AAC codec_data; not packetized");
goto refuse_caps;
}
break;
default:
goto refuse_caps;
}
} else if (!strcmp (mimetype, "audio/x-raw")) {
GstAudioInfo info;
gst_audio_info_init (&info);
if (!gst_audio_info_from_caps (&info, caps)) {
GST_DEBUG_OBJECT (mux,
"broken caps, rejected by gst_audio_info_from_caps");
goto refuse_caps;
}
switch (GST_AUDIO_INFO_FORMAT (&info)) {
case GST_AUDIO_FORMAT_U8:
case GST_AUDIO_FORMAT_S16BE:
case GST_AUDIO_FORMAT_S16LE:
case GST_AUDIO_FORMAT_S24BE:
case GST_AUDIO_FORMAT_S24LE:
case GST_AUDIO_FORMAT_S32BE:
case GST_AUDIO_FORMAT_S32LE:
if (GST_AUDIO_INFO_WIDTH (&info) != GST_AUDIO_INFO_DEPTH (&info)) {
GST_DEBUG_OBJECT (mux, "width must be same as depth!");
goto refuse_caps;
}
if (GST_AUDIO_INFO_IS_BIG_ENDIAN (&info))
gst_matroska_mux_set_codec_id (context,
GST_MATROSKA_CODEC_ID_AUDIO_PCM_INT_BE);
else
gst_matroska_mux_set_codec_id (context,
GST_MATROSKA_CODEC_ID_AUDIO_PCM_INT_LE);
break;
case GST_AUDIO_FORMAT_F32LE:
case GST_AUDIO_FORMAT_F64LE:
gst_matroska_mux_set_codec_id (context,
GST_MATROSKA_CODEC_ID_AUDIO_PCM_FLOAT);
break;
default:
GST_DEBUG_OBJECT (mux, "wrong format in raw audio caps");
goto refuse_caps;
}
audiocontext->bitdepth = GST_AUDIO_INFO_WIDTH (&info);
} else if (!strcmp (mimetype, "audio/x-vorbis")) {
const GValue *streamheader;
gst_matroska_mux_set_codec_id (context, GST_MATROSKA_CODEC_ID_AUDIO_VORBIS);
gst_matroska_mux_free_codec_priv (context);
streamheader = gst_structure_get_value (structure, "streamheader");
if (!vorbis_streamheader_to_codecdata (streamheader, context)) {
GST_ELEMENT_ERROR (mux, STREAM, MUX, (NULL),
("vorbis stream headers missing or malformed"));
goto refuse_caps;
}
} else if (!strcmp (mimetype, "audio/x-flac")) {
const GValue *streamheader;
gst_matroska_mux_set_codec_id (context, GST_MATROSKA_CODEC_ID_AUDIO_FLAC);
gst_matroska_mux_free_codec_priv (context);
streamheader = gst_structure_get_value (structure, "streamheader");
if (!flac_streamheader_to_codecdata (streamheader, context)) {
GST_ELEMENT_ERROR (mux, STREAM, MUX, (NULL),
("flac stream headers missing or malformed"));
goto refuse_caps;
}
} else if (!strcmp (mimetype, "audio/x-speex")) {
const GValue *streamheader;
gst_matroska_mux_set_codec_id (context, GST_MATROSKA_CODEC_ID_AUDIO_SPEEX);
gst_matroska_mux_free_codec_priv (context);
streamheader = gst_structure_get_value (structure, "streamheader");
if (!speex_streamheader_to_codecdata (streamheader, context)) {
GST_ELEMENT_ERROR (mux, STREAM, MUX, (NULL),
("speex stream headers missing or malformed"));
goto refuse_caps;
}
} else if (!strcmp (mimetype, "audio/x-opus")) {
const GValue *streamheader;
gst_matroska_mux_set_codec_id (context, GST_MATROSKA_CODEC_ID_AUDIO_OPUS);
streamheader = gst_structure_get_value (structure, "streamheader");
if (streamheader) {
gst_matroska_mux_free_codec_priv (context);
if (!opus_streamheader_to_codecdata (streamheader, context)) {
GST_ELEMENT_ERROR (mux, STREAM, MUX, (NULL),
("opus stream headers missing or malformed"));
goto refuse_caps;
}
} else {
/* no streamheader, but we need to have one, so we make one up
based on caps */
gst_matroska_mux_free_codec_priv (context);
if (!opus_make_codecdata (context, caps)) {
GST_ELEMENT_ERROR (mux, STREAM, MUX, (NULL),
("opus stream headers missing or malformed"));
goto refuse_caps;
}
}
} else if (!strcmp (mimetype, "audio/x-ac3")) {
gst_matroska_mux_set_codec_id (context, GST_MATROSKA_CODEC_ID_AUDIO_AC3);
} else if (!strcmp (mimetype, "audio/x-eac3")) {
gst_matroska_mux_set_codec_id (context, GST_MATROSKA_CODEC_ID_AUDIO_EAC3);
} else if (!strcmp (mimetype, "audio/x-dts")) {
gst_matroska_mux_set_codec_id (context, GST_MATROSKA_CODEC_ID_AUDIO_DTS);
} else if (!strcmp (mimetype, "audio/x-tta")) {
gint width;
/* TTA frame duration */
context->default_duration = 1.04489795918367346939 * GST_SECOND;
gst_structure_get_int (structure, "width", &width);
audiocontext->bitdepth = width;
gst_matroska_mux_set_codec_id (context, GST_MATROSKA_CODEC_ID_AUDIO_TTA);
} else if (!strcmp (mimetype, "audio/x-pn-realaudio")) {
gint raversion;
const GValue *mdpr_data;
gst_structure_get_int (structure, "raversion", &raversion);
switch (raversion) {
case 1:
gst_matroska_mux_set_codec_id (context,
GST_MATROSKA_CODEC_ID_AUDIO_REAL_14_4);
break;
case 2:
gst_matroska_mux_set_codec_id (context,
GST_MATROSKA_CODEC_ID_AUDIO_REAL_28_8);
break;
case 8:
gst_matroska_mux_set_codec_id (context,
GST_MATROSKA_CODEC_ID_AUDIO_REAL_COOK);
break;
default:
goto refuse_caps;
}
mdpr_data = gst_structure_get_value (structure, "mdpr_data");
if (mdpr_data != NULL) {
guint8 *priv_data = NULL;
guint priv_data_size = 0;
GstBuffer *codec_data_buf = g_value_peek_pointer (mdpr_data);
priv_data_size = gst_buffer_get_size (codec_data_buf);
priv_data = g_malloc0 (priv_data_size);
gst_buffer_extract (codec_data_buf, 0, priv_data, -1);
gst_matroska_mux_free_codec_priv (context);
context->codec_priv = priv_data;
context->codec_priv_size = priv_data_size;
}
} else if (!strcmp (mimetype, "audio/x-wma")
|| !strcmp (mimetype, "audio/x-alaw")
|| !strcmp (mimetype, "audio/x-mulaw")
|| !strcmp (mimetype, "audio/x-adpcm")) {
guint8 *codec_priv;
guint codec_priv_size;
guint16 format = 0;
gint block_align = 0;
gint bitrate = 0;
if (samplerate == 0 || channels == 0) {
GST_WARNING_OBJECT (mux, "Missing channels/samplerate on caps");
goto refuse_caps;
}
if (!strcmp (mimetype, "audio/x-wma")) {
gint wmaversion;
gint depth;
if (!gst_structure_get_int (structure, "wmaversion", &wmaversion)
|| !gst_structure_get_int (structure, "block_align", &block_align)
|| !gst_structure_get_int (structure, "bitrate", &bitrate)) {
GST_WARNING_OBJECT (mux, "Missing wmaversion/block_align/bitrate"
" on WMA caps");
goto refuse_caps;
}
switch (wmaversion) {
case 1:
format = GST_RIFF_WAVE_FORMAT_WMAV1;
break;
case 2:
format = GST_RIFF_WAVE_FORMAT_WMAV2;
break;
case 3:
format = GST_RIFF_WAVE_FORMAT_WMAV3;
break;
default:
GST_WARNING_OBJECT (mux, "Unexpected WMA version: %d", wmaversion);
goto refuse_caps;
}
if (gst_structure_get_int (structure, "depth", &depth))
audiocontext->bitdepth = depth;
} else if (!strcmp (mimetype, "audio/x-alaw")
|| !strcmp (mimetype, "audio/x-mulaw")) {
audiocontext->bitdepth = 8;
if (!strcmp (mimetype, "audio/x-alaw"))
format = GST_RIFF_WAVE_FORMAT_ALAW;
else
format = GST_RIFF_WAVE_FORMAT_MULAW;
block_align = channels;
bitrate = block_align * samplerate;
} else if (!strcmp (mimetype, "audio/x-adpcm")) {
const char *layout;
layout = gst_structure_get_string (structure, "layout");
if (!layout) {
GST_WARNING_OBJECT (mux, "Missing layout on adpcm caps");
goto refuse_caps;
}
if (!gst_structure_get_int (structure, "block_align", &block_align)) {
GST_WARNING_OBJECT (mux, "Missing block_align on adpcm caps");
goto refuse_caps;
}
if (!strcmp (layout, "dvi")) {
format = GST_RIFF_WAVE_FORMAT_DVI_ADPCM;
} else if (!strcmp (layout, "g726")) {
format = GST_RIFF_WAVE_FORMAT_ITU_G726_ADPCM;
if (!gst_structure_get_int (structure, "bitrate", &bitrate)) {
GST_WARNING_OBJECT (mux, "Missing bitrate on adpcm g726 caps");
goto refuse_caps;
}
} else {
GST_WARNING_OBJECT (mux, "Unknown layout on adpcm caps");
goto refuse_caps;
}
}
g_assert (format != 0);
codec_priv_size = WAVEFORMATEX_SIZE;
if (buf)
codec_priv_size += gst_buffer_get_size (buf);
/* serialize waveformatex structure */
codec_priv = g_malloc0 (codec_priv_size);
GST_WRITE_UINT16_LE (codec_priv, format);
GST_WRITE_UINT16_LE (codec_priv + 2, channels);
GST_WRITE_UINT32_LE (codec_priv + 4, samplerate);
GST_WRITE_UINT32_LE (codec_priv + 8, bitrate / 8);
GST_WRITE_UINT16_LE (codec_priv + 12, block_align);
GST_WRITE_UINT16_LE (codec_priv + 14, 0);
if (buf)
GST_WRITE_UINT16_LE (codec_priv + 16, gst_buffer_get_size (buf));
else
GST_WRITE_UINT16_LE (codec_priv + 16, 0);
/* process codec private/initialization data, if any */
if (buf) {
gst_buffer_extract (buf, 0,
(guint8 *) codec_priv + WAVEFORMATEX_SIZE, -1);
}
gst_matroska_mux_set_codec_id (context, GST_MATROSKA_CODEC_ID_AUDIO_ACM);
gst_matroska_mux_free_codec_priv (context);
context->codec_priv = (gpointer) codec_priv;
context->codec_priv_size = codec_priv_size;
}
return TRUE;
/* ERRORS */
refuse_caps:
{
GST_WARNING_OBJECT (mux, "pad %s refused caps %" GST_PTR_FORMAT,
GST_PAD_NAME (pad), caps);
return FALSE;
}
}
/* we probably don't have the data at start,
* so have to reserve (a maximum) space to write this at the end.
* bit spacy, but some formats can hold quite some */
#define SUBTITLE_MAX_CODEC_PRIVATE 2048 /* must be > 128 */
/**
* gst_matroska_mux_subtitle_pad_setcaps:
* @pad: Pad which got the caps.
* @caps: New caps.
*
* Setcaps function for subtitle sink pad.
*
* Returns: #TRUE on success.
*/
static gboolean
gst_matroska_mux_subtitle_pad_setcaps (GstPad * pad, GstCaps * caps)
{
/* There is now (at least) one such alement (kateenc), and I'm going
to handle it here and claim it works when it can be piped back
through GStreamer and VLC */
GstMatroskaTrackContext *context = NULL;
GstMatroskaTrackSubtitleContext *scontext;
GstMatroskaMux *mux;
GstMatroskaPad *collect_pad;
const gchar *mimetype;
GstStructure *structure;
const GValue *value = NULL;
GstBuffer *buf = NULL;
gboolean ret = TRUE;
mux = GST_MATROSKA_MUX (GST_PAD_PARENT (pad));
/* find context */
collect_pad = (GstMatroskaPad *) gst_pad_get_element_private (pad);
g_assert (collect_pad);
context = collect_pad->track;
g_assert (context);
g_assert (context->type == GST_MATROSKA_TRACK_TYPE_SUBTITLE);
scontext = (GstMatroskaTrackSubtitleContext *) context;
structure = gst_caps_get_structure (caps, 0);
mimetype = gst_structure_get_name (structure);
/* general setup */
scontext->check_utf8 = 1;
scontext->invalid_utf8 = 0;
context->default_duration = 0;
if (!strcmp (mimetype, "subtitle/x-kate")) {
const GValue *streamheader;
gst_matroska_mux_set_codec_id (context,
GST_MATROSKA_CODEC_ID_SUBTITLE_KATE);
gst_matroska_mux_free_codec_priv (context);
streamheader = gst_structure_get_value (structure, "streamheader");
if (!kate_streamheader_to_codecdata (streamheader, context)) {
GST_ELEMENT_ERROR (mux, STREAM, MUX, (NULL),
("kate stream headers missing or malformed"));
ret = FALSE;
goto exit;
}
} else if (!strcmp (mimetype, "text/x-raw")) {
gst_matroska_mux_set_codec_id (context,
GST_MATROSKA_CODEC_ID_SUBTITLE_UTF8);
} else if (!strcmp (mimetype, "application/x-ssa")) {
gst_matroska_mux_set_codec_id (context, GST_MATROSKA_CODEC_ID_SUBTITLE_SSA);
} else if (!strcmp (mimetype, "application/x-ass")) {
gst_matroska_mux_set_codec_id (context, GST_MATROSKA_CODEC_ID_SUBTITLE_ASS);
} else if (!strcmp (mimetype, "application/x-usf")) {
gst_matroska_mux_set_codec_id (context, GST_MATROSKA_CODEC_ID_SUBTITLE_USF);
} else if (!strcmp (mimetype, "subpicture/x-dvd")) {
gst_matroska_mux_set_codec_id (context,
GST_MATROSKA_CODEC_ID_SUBTITLE_VOBSUB);
} else {
ret = FALSE;
goto exit;
}
/* maybe some private data, e.g. vobsub */
value = gst_structure_get_value (structure, "codec_data");
if (value)
buf = gst_value_get_buffer (value);
if (buf != NULL) {
GstMapInfo map;
guint8 *priv_data = NULL;
gst_buffer_map (buf, &map, GST_MAP_READ);
if (map.size > SUBTITLE_MAX_CODEC_PRIVATE) {
GST_WARNING_OBJECT (mux, "pad %" GST_PTR_FORMAT " subtitle private data"
" exceeded maximum (%d); discarding", pad,
SUBTITLE_MAX_CODEC_PRIVATE);
gst_buffer_unmap (buf, &map);
return TRUE;
}
gst_matroska_mux_free_codec_priv (context);
priv_data = g_malloc0 (map.size);
memcpy (priv_data, map.data, map.size);
context->codec_priv = priv_data;
context->codec_priv_size = map.size;
gst_buffer_unmap (buf, &map);
}
GST_DEBUG_OBJECT (pad, "codec_id %s, codec data size %" G_GSIZE_FORMAT,
GST_STR_NULL (context->codec_id), context->codec_priv_size);
exit:
return ret;
}
/**
* gst_matroska_mux_request_new_pad:
* @element: #GstMatroskaMux.
* @templ: #GstPadTemplate.
* @pad_name: New pad name.
*
* Request pad function for sink templates.
*
* Returns: New #GstPad.
*/
static GstPad *
gst_matroska_mux_request_new_pad (GstElement * element,
GstPadTemplate * templ, const gchar * req_name, const GstCaps * caps)
{
GstElementClass *klass = GST_ELEMENT_GET_CLASS (element);
GstMatroskaMux *mux = GST_MATROSKA_MUX (element);
GstMatroskaPad *collect_pad;
GstMatroskamuxPad *newpad;
gchar *name = NULL;
const gchar *pad_name = NULL;
GstMatroskaCapsFunc capsfunc = NULL;
GstMatroskaTrackContext *context = NULL;
gint pad_id;
gboolean locked = TRUE;
const gchar *id = NULL;
if (templ == gst_element_class_get_pad_template (klass, "audio_%u")) {
/* don't mix named and unnamed pads, if the pad already exists we fail when
* trying to add it */
if (req_name != NULL && sscanf (req_name, "audio_%u", &pad_id) == 1) {
pad_name = req_name;
} else {
name = g_strdup_printf ("audio_%u", mux->num_a_streams++);
pad_name = name;
}
capsfunc = GST_DEBUG_FUNCPTR (gst_matroska_mux_audio_pad_setcaps);
context = (GstMatroskaTrackContext *)
g_new0 (GstMatroskaTrackAudioContext, 1);
context->type = GST_MATROSKA_TRACK_TYPE_AUDIO;
context->name = g_strdup ("Audio");
} else if (templ == gst_element_class_get_pad_template (klass, "video_%u")) {
/* don't mix named and unnamed pads, if the pad already exists we fail when
* trying to add it */
if (req_name != NULL && sscanf (req_name, "video_%u", &pad_id) == 1) {
pad_name = req_name;
} else {
name = g_strdup_printf ("video_%u", mux->num_v_streams++);
pad_name = name;
}
capsfunc = GST_DEBUG_FUNCPTR (gst_matroska_mux_video_pad_setcaps);
context = (GstMatroskaTrackContext *)
g_new0 (GstMatroskaTrackVideoContext, 1);
context->type = GST_MATROSKA_TRACK_TYPE_VIDEO;
context->name = g_strdup ("Video");
} else if (templ == gst_element_class_get_pad_template (klass, "subtitle_%u")) {
/* don't mix named and unnamed pads, if the pad already exists we fail when
* trying to add it */
if (req_name != NULL && sscanf (req_name, "subtitle_%u", &pad_id) == 1) {
pad_name = req_name;
} else {
name = g_strdup_printf ("subtitle_%u", mux->num_t_streams++);
pad_name = name;
}
capsfunc = GST_DEBUG_FUNCPTR (gst_matroska_mux_subtitle_pad_setcaps);
context = (GstMatroskaTrackContext *)
g_new0 (GstMatroskaTrackSubtitleContext, 1);
context->type = GST_MATROSKA_TRACK_TYPE_SUBTITLE;
context->name = g_strdup ("Subtitle");
/* setcaps may only provide proper one a lot later */
id = "S_SUB_UNKNOWN";
locked = FALSE;
} else {
GST_WARNING_OBJECT (mux, "This is not our template!");
return NULL;
}
newpad = g_object_new (GST_TYPE_MATROSKAMUX_PAD,
"name", pad_name, "direction", templ->direction, "template", templ, NULL);
gst_matroskamux_pad_init (newpad);
collect_pad = (GstMatroskaPad *)
gst_collect_pads_add_pad (mux->collect, GST_PAD (newpad),
sizeof (GstMatroskamuxPad),
(GstCollectDataDestroyNotify) gst_matroska_pad_free, locked);
collect_pad->mux = mux;
collect_pad->track = context;
gst_matroska_pad_reset (collect_pad, FALSE);
if (id)
gst_matroska_mux_set_codec_id (collect_pad->track, id);
collect_pad->track->dts_only = FALSE;
collect_pad->capsfunc = capsfunc;
gst_pad_set_active (GST_PAD (newpad), TRUE);
if (!gst_element_add_pad (element, GST_PAD (newpad)))
goto pad_add_failed;
g_free (name);
mux->num_streams++;
GST_DEBUG_OBJECT (newpad, "Added new request pad");
return GST_PAD (newpad);
/* ERROR cases */
pad_add_failed:
{
GST_WARNING_OBJECT (mux, "Adding the new pad '%s' failed", pad_name);
g_free (name);
gst_object_unref (newpad);
return NULL;
}
}
/**
* gst_matroska_mux_release_pad:
* @element: #GstMatroskaMux.
* @pad: Pad to release.
*
* Release a previously requested pad.
*/
static void
gst_matroska_mux_release_pad (GstElement * element, GstPad * pad)
{
GstMatroskaMux *mux;
GSList *walk;
mux = GST_MATROSKA_MUX (GST_PAD_PARENT (pad));
for (walk = mux->collect->data; walk; walk = g_slist_next (walk)) {
GstCollectData *cdata = (GstCollectData *) walk->data;
GstMatroskaPad *collect_pad = (GstMatroskaPad *) cdata;
if (cdata->pad == pad) {
/*
* observed duration, this will remain GST_CLOCK_TIME_NONE
* only if the pad is resetted
*/
GstClockTime collected_duration = GST_CLOCK_TIME_NONE;
if (GST_CLOCK_TIME_IS_VALID (collect_pad->start_ts) &&
GST_CLOCK_TIME_IS_VALID (collect_pad->end_ts)) {
collected_duration =
GST_CLOCK_DIFF (collect_pad->start_ts, collect_pad->end_ts);
}
if (GST_CLOCK_TIME_IS_VALID (collected_duration)
&& mux->duration < collected_duration)
mux->duration = collected_duration;
break;
}
}
gst_collect_pads_remove_pad (mux->collect, pad);
if (gst_element_remove_pad (element, pad))
mux->num_streams--;
}
/**
* gst_matroska_mux_track_header:
* @mux: #GstMatroskaMux
* @context: Tack context.
*
* Write a track header.
*/
static void
gst_matroska_mux_track_header (GstMatroskaMux * mux,
GstMatroskaTrackContext * context)
{
GstEbmlWrite *ebml = mux->ebml_write;
guint64 master;
/* TODO: check if everything necessary is written and check default values */
/* track type goes before the type-specific stuff */
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_TRACKNUMBER, context->num);
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_TRACKTYPE, context->type);
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_TRACKUID, context->uid);
if (context->default_duration) {
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_TRACKDEFAULTDURATION,
context->default_duration);
}
if (context->language) {
gst_ebml_write_utf8 (ebml, GST_MATROSKA_ID_TRACKLANGUAGE,
context->language);
}
/* FIXME: until we have a nice way of getting the codecname
* out of the caps, I'm not going to enable this. Too much
* (useless, double, boring) work... */
/* TODO: Use value from tags if any */
/*gst_ebml_write_utf8 (ebml, GST_MATROSKA_ID_CODECNAME,
context->codec_name); */
gst_ebml_write_utf8 (ebml, GST_MATROSKA_ID_TRACKNAME, context->name);
/* type-specific stuff */
switch (context->type) {
case GST_MATROSKA_TRACK_TYPE_VIDEO:{
GstMatroskaTrackVideoContext *videocontext =
(GstMatroskaTrackVideoContext *) context;
master = gst_ebml_write_master_start (ebml, GST_MATROSKA_ID_TRACKVIDEO);
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_VIDEOPIXELWIDTH,
videocontext->pixel_width);
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_VIDEOPIXELHEIGHT,
videocontext->pixel_height);
if (videocontext->display_width && videocontext->display_height) {
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_VIDEODISPLAYWIDTH,
videocontext->display_width);
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_VIDEODISPLAYHEIGHT,
videocontext->display_height);
}
if (context->flags & GST_MATROSKA_VIDEOTRACK_INTERLACED)
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_VIDEOFLAGINTERLACED, 1);
if (videocontext->fourcc) {
guint32 fcc_le = GUINT32_TO_LE (videocontext->fourcc);
gst_ebml_write_binary (ebml, GST_MATROSKA_ID_VIDEOCOLOURSPACE,
(gpointer) & fcc_le, 4);
}
if (videocontext->multiview_mode != GST_VIDEO_MULTIVIEW_MODE_NONE) {
guint64 stereo_mode = 0;
switch (videocontext->multiview_mode) {
case GST_VIDEO_MULTIVIEW_MODE_MONO:
break;
case GST_VIDEO_MULTIVIEW_MODE_SIDE_BY_SIDE:
if (videocontext->multiview_flags &
GST_VIDEO_MULTIVIEW_FLAGS_RIGHT_VIEW_FIRST)
stereo_mode = GST_MATROSKA_STEREO_MODE_SBS_RL;
else
stereo_mode = GST_MATROSKA_STEREO_MODE_SBS_LR;
break;
case GST_VIDEO_MULTIVIEW_MODE_TOP_BOTTOM:
if (videocontext->multiview_flags &
GST_VIDEO_MULTIVIEW_FLAGS_RIGHT_VIEW_FIRST)
stereo_mode = GST_MATROSKA_STEREO_MODE_TB_RL;
else
stereo_mode = GST_MATROSKA_STEREO_MODE_TB_LR;
break;
case GST_VIDEO_MULTIVIEW_MODE_CHECKERBOARD:
if (videocontext->multiview_flags &
GST_VIDEO_MULTIVIEW_FLAGS_RIGHT_VIEW_FIRST)
stereo_mode = GST_MATROSKA_STEREO_MODE_CHECKER_RL;
else
stereo_mode = GST_MATROSKA_STEREO_MODE_CHECKER_LR;
break;
case GST_VIDEO_MULTIVIEW_MODE_FRAME_BY_FRAME:
if (videocontext->multiview_flags &
GST_VIDEO_MULTIVIEW_FLAGS_RIGHT_VIEW_FIRST)
stereo_mode = GST_MATROSKA_STEREO_MODE_FBF_RL;
else
stereo_mode = GST_MATROSKA_STEREO_MODE_FBF_LR;
/* FIXME: In frame-by-frame mode, left/right frame buffers need to be
* laced within one block. See http://www.matroska.org/technical/specs/index.html#StereoMode */
GST_FIXME_OBJECT (mux,
"Frame-by-frame stereoscopic mode not fully implemented");
break;
default:
GST_WARNING_OBJECT (mux,
"Multiview mode %d not supported in Matroska/WebM",
videocontext->multiview_mode);
break;
}
if (stereo_mode != 0)
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_VIDEOSTEREOMODE,
stereo_mode);
}
gst_ebml_write_master_finish (ebml, master);
break;
}
case GST_MATROSKA_TRACK_TYPE_AUDIO:{
GstMatroskaTrackAudioContext *audiocontext =
(GstMatroskaTrackAudioContext *) context;
master = gst_ebml_write_master_start (ebml, GST_MATROSKA_ID_TRACKAUDIO);
if (audiocontext->samplerate != 8000)
gst_ebml_write_float (ebml, GST_MATROSKA_ID_AUDIOSAMPLINGFREQ,
audiocontext->samplerate);
if (audiocontext->channels != 1)
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_AUDIOCHANNELS,
audiocontext->channels);
if (audiocontext->bitdepth) {
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_AUDIOBITDEPTH,
audiocontext->bitdepth);
}
gst_ebml_write_master_finish (ebml, master);
break;
}
case GST_MATROSKA_TRACK_TYPE_SUBTITLE:{
break;
}
default:
/* doesn't need type-specific data */
break;
}
gst_ebml_write_ascii (ebml, GST_MATROSKA_ID_CODECID, context->codec_id);
if (context->codec_priv)
gst_ebml_write_binary (ebml, GST_MATROSKA_ID_CODECPRIVATE,
context->codec_priv, context->codec_priv_size);
if (context->seek_preroll) {
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_SEEKPREROLL,
context->seek_preroll);
}
if (context->codec_delay) {
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_CODECDELAY,
context->codec_delay);
}
}
#if 0
static void
gst_matroska_mux_write_chapter_title (const gchar * title, GstEbmlWrite * ebml)
{
guint64 title_master;
title_master =
gst_ebml_write_master_start (ebml, GST_MATROSKA_ID_CHAPTERDISPLAY);
gst_ebml_write_utf8 (ebml, GST_MATROSKA_ID_CHAPSTRING, title);
gst_ebml_write_ascii (ebml, GST_MATROSKA_ID_CHAPLANGUAGE,
GST_MATROSKA_MUX_CHAPLANG);
gst_ebml_write_master_finish (ebml, title_master);
}
static void
gst_matroska_mux_write_chapter (GstMatroskaMux * mux, GstTocEntry * edition,
GstTocEntry * entry, GstEbmlWrite * ebml, guint64 * master_chapters,
guint64 * master_edition)
{
guint64 uid, master_chapteratom;
GList *cur;
GstTocEntry *cur_entry;
guint count, i;
gchar *title;
gint64 start, stop;
if (G_UNLIKELY (master_chapters != NULL && *master_chapters == 0))
*master_chapters =
gst_ebml_write_master_start (ebml, GST_MATROSKA_ID_CHAPTERS);
if (G_UNLIKELY (master_edition != NULL && *master_edition == 0)) {
/* create uid for the parent */
uid = gst_matroska_mux_create_uid ();
g_free (edition->uid);
edition->uid = g_strdup_printf ("%" G_GUINT64_FORMAT, uid);
*master_edition =
gst_ebml_write_master_start (ebml, GST_MATROSKA_ID_EDITIONENTRY);
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_EDITIONUID, uid);
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_EDITIONFLAGHIDDEN, 0);
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_EDITIONFLAGDEFAULT, 0);
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_EDITIONFLAGORDERED, 0);
}
uid = gst_matroska_mux_create_uid ();
gst_toc_entry_get_start_stop_times (entry, &start, &stop);
master_chapteratom =
gst_ebml_write_master_start (ebml, GST_MATROSKA_ID_CHAPTERATOM);
g_free (entry->uid);
entry->uid = g_strdup_printf ("%" G_GUINT64_FORMAT, uid);
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_CHAPTERUID, uid);
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_CHAPTERTIMESTART, start);
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_CHAPTERTIMESTOP, stop);
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_CHAPTERFLAGHIDDEN, 0);
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_CHAPTERFLAGENABLED, 1);
cur = entry->subentries;
while (cur != NULL) {
cur_entry = cur->data;
gst_matroska_mux_write_chapter (mux, NULL, cur_entry, ebml, NULL, NULL);
cur = cur->next;
}
if (G_LIKELY (entry->tags != NULL)) {
count = gst_tag_list_get_tag_size (entry->tags, GST_TAG_TITLE);
for (i = 0; i < count; ++i) {
gst_tag_list_get_string_index (entry->tags, GST_TAG_TITLE, i, &title);
gst_matroska_mux_write_chapter_title (title, ebml);
g_free (title);
}
/* remove title tag */
if (G_LIKELY (count > 0))
gst_tag_list_remove_tag (entry->tags, GST_TAG_TITLE);
}
gst_ebml_write_master_finish (ebml, master_chapteratom);
}
static void
gst_matroska_mux_write_chapter_edition (GstMatroskaMux * mux,
GstTocEntry * entry, GstEbmlWrite * ebml, guint64 * master_chapters)
{
guint64 master_edition = 0;
GList *cur;
GstTocEntry *subentry;
cur = gst_toc_entry_get_sub_entries (entry);
while (cur != NULL) {
subentry = cur->data;
gst_matroska_mux_write_chapter (mux, entry, subentry, ebml, master_chapters,
&master_edition);
cur = cur->next;
}
if (G_LIKELY (master_edition != 0))
gst_ebml_write_master_finish (ebml, master_edition);
}
#endif
/**
* gst_matroska_mux_start:
* @mux: #GstMatroskaMux
*
* Start a new matroska file (write headers etc...)
*/
static void
gst_matroska_mux_start (GstMatroskaMux * mux)
{
GstEbmlWrite *ebml = mux->ebml_write;
const gchar *doctype;
guint32 seekhead_id[] = { GST_MATROSKA_ID_SEGMENTINFO,
GST_MATROSKA_ID_TRACKS,
GST_MATROSKA_ID_CHAPTERS,
GST_MATROSKA_ID_CUES,
GST_MATROSKA_ID_TAGS,
0
};
const gchar *media_type;
gboolean audio_only;
guint64 master, child;
GSList *collected;
int i;
guint tracknum = 1;
GstClockTime duration = 0;
guint32 segment_uid[4];
GTimeVal time = { 0, 0 };
gchar s_id[32];
#if 0
GstToc *toc;
#endif
/* if not streaming, check if downstream is seekable */
if (!mux->ebml_write->streamable) {
gboolean seekable;
GstQuery *query;
query = gst_query_new_seeking (GST_FORMAT_BYTES);
if (gst_pad_peer_query (mux->srcpad, query)) {
gst_query_parse_seeking (query, NULL, &seekable, NULL, NULL);
GST_INFO_OBJECT (mux, "downstream is %sseekable", seekable ? "" : "not ");
} else {
/* assume seeking is not supported if query not handled downstream */
GST_WARNING_OBJECT (mux, "downstream did not handle seeking query");
seekable = FALSE;
}
if (!seekable) {
mux->ebml_write->streamable = TRUE;
g_object_notify (G_OBJECT (mux), "streamable");
GST_WARNING_OBJECT (mux, "downstream is not seekable, but "
"streamable=false. Will ignore that and create streamable output "
"instead");
}
gst_query_unref (query);
}
/* stream-start (FIXME: create id based on input ids) */
g_snprintf (s_id, sizeof (s_id), "matroskamux-%08x", g_random_int ());
gst_pad_push_event (mux->srcpad, gst_event_new_stream_start (s_id));
/* output caps */
audio_only = mux->num_v_streams == 0 && mux->num_a_streams > 0;
if (mux->is_webm) {
media_type = (audio_only) ? "audio/webm" : "video/webm";
} else {
media_type = (audio_only) ? "audio/x-matroska" : "video/x-matroska";
}
ebml->caps = gst_caps_new_empty_simple (media_type);
gst_pad_set_caps (mux->srcpad, ebml->caps);
/* we start with a EBML header */
doctype = mux->doctype;
GST_INFO_OBJECT (ebml, "DocType: %s, Version: %d",
doctype, mux->doctype_version);
gst_ebml_write_header (ebml, doctype, mux->doctype_version);
/* the rest of the header is cached */
gst_ebml_write_set_cache (ebml, 0x1000);
/* start a segment */
mux->segment_pos =
gst_ebml_write_master_start (ebml, GST_MATROSKA_ID_SEGMENT);
mux->segment_master = ebml->pos;
if (!mux->ebml_write->streamable) {
/* seekhead (table of contents) - we set the positions later */
mux->seekhead_pos = ebml->pos;
master = gst_ebml_write_master_start (ebml, GST_MATROSKA_ID_SEEKHEAD);
for (i = 0; seekhead_id[i] != 0; i++) {
child = gst_ebml_write_master_start (ebml, GST_MATROSKA_ID_SEEKENTRY);
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_SEEKID, seekhead_id[i]);
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_SEEKPOSITION, -1);
gst_ebml_write_master_finish (ebml, child);
}
gst_ebml_write_master_finish (ebml, master);
}
if (mux->ebml_write->streamable) {
const GstTagList *tags;
gboolean has_main_tags;
/* tags */
tags = gst_tag_setter_get_tag_list (GST_TAG_SETTER (mux));
has_main_tags = tags != NULL && !gst_matroska_mux_tag_list_is_empty (tags);
if (has_main_tags || gst_matroska_mux_streams_have_tags (mux)) {
guint64 master_tags, master_tag;
GST_DEBUG_OBJECT (mux, "Writing tags");
mux->tags_pos = ebml->pos;
master_tags = gst_ebml_write_master_start (ebml, GST_MATROSKA_ID_TAGS);
if (has_main_tags) {
master_tag = gst_ebml_write_master_start (ebml, GST_MATROSKA_ID_TAG);
gst_tag_list_foreach (tags, gst_matroska_mux_write_simple_tag, ebml);
gst_ebml_write_master_finish (ebml, master_tag);
}
gst_matroska_mux_write_streams_tags (mux);
gst_ebml_write_master_finish (ebml, master_tags);
}
}
/* segment info */
mux->info_pos = ebml->pos;
master = gst_ebml_write_master_start (ebml, GST_MATROSKA_ID_SEGMENTINFO);
/* WebM does not support SegmentUID field on SegmentInfo */
if (!mux->is_webm) {
for (i = 0; i < 4; i++) {
segment_uid[i] = g_random_int ();
}
gst_ebml_write_binary (ebml, GST_MATROSKA_ID_SEGMENTUID,
(guint8 *) segment_uid, 16);
}
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_TIMECODESCALE, mux->time_scale);
mux->duration_pos = ebml->pos;
/* get duration */
if (!mux->ebml_write->streamable) {
for (collected = mux->collect->data; collected;
collected = g_slist_next (collected)) {
GstMatroskaPad *collect_pad;
GstPad *thepad;
gint64 trackduration;
collect_pad = (GstMatroskaPad *) collected->data;
thepad = collect_pad->collect.pad;
/* Query the total length of the track. */
GST_DEBUG_OBJECT (thepad, "querying peer duration");
if (gst_pad_peer_query_duration (thepad, GST_FORMAT_TIME, &trackduration)) {
GST_DEBUG_OBJECT (thepad, "duration: %" GST_TIME_FORMAT,
GST_TIME_ARGS (trackduration));
if (trackduration != GST_CLOCK_TIME_NONE && trackduration > duration) {
duration = (GstClockTime) trackduration;
}
}
}
gst_ebml_write_float (ebml, GST_MATROSKA_ID_DURATION,
gst_guint64_to_gdouble (duration) /
gst_guint64_to_gdouble (mux->time_scale));
}
gst_ebml_write_utf8 (ebml, GST_MATROSKA_ID_MUXINGAPP,
"GStreamer matroskamux version " PACKAGE_VERSION);
if (mux->writing_app && mux->writing_app[0]) {
gst_ebml_write_utf8 (ebml, GST_MATROSKA_ID_WRITINGAPP, mux->writing_app);
}
g_get_current_time (&time);
gst_ebml_write_date (ebml, GST_MATROSKA_ID_DATEUTC, time.tv_sec);
gst_ebml_write_master_finish (ebml, master);
/* tracks */
mux->tracks_pos = ebml->pos;
master = gst_ebml_write_master_start (ebml, GST_MATROSKA_ID_TRACKS);
for (collected = mux->collect->data; collected;
collected = g_slist_next (collected)) {
GstMatroskaPad *collect_pad;
collect_pad = (GstMatroskaPad *) collected->data;
/* This will cause an error at a later time */
if (collect_pad->track->codec_id == NULL)
continue;
collect_pad->track->num = tracknum++;
child = gst_ebml_write_master_start (ebml, GST_MATROSKA_ID_TRACKENTRY);
gst_matroska_mux_track_header (mux, collect_pad->track);
gst_ebml_write_master_finish (ebml, child);
/* some remaining pad/track setup */
collect_pad->default_duration_scaled =
gst_util_uint64_scale (collect_pad->track->default_duration,
1, mux->time_scale);
}
gst_ebml_write_master_finish (ebml, master);
/* FIXME: Check if we get a TOC that is supported by Matroska
* and clean up the code below */
#if 0
/* chapters */
toc = gst_toc_setter_get_toc (GST_TOC_SETTER (mux));
if (toc != NULL && !mux->ebml_write->streamable) {
guint64 master_chapters = 0;
GstTocEntry *toc_entry;
GList *cur, *to_write = NULL;
gint64 start, stop;
GST_DEBUG ("Writing chapters");
/* check whether we have editions or chapters at the root level */
toc_entry = toc->entries->data;
if (toc_entry->type != GST_TOC_ENTRY_TYPE_EDITION) {
toc_entry = gst_toc_entry_new (GST_TOC_ENTRY_TYPE_EDITION, "");
gst_toc_entry_set_start_stop_times (toc_entry, -1, -1);
/* aggregate all chapters without root edition */
cur = gst_toc_get_entries (toc);
while (cur != NULL) {
toc_entry->subentries =
g_list_prepend (toc_entry->subentries, cur->data);
cur = cur->next;
}
gst_toc_entry_get_start_stop_times (((GstTocEntry *)
toc_entry->subentries->data), &start, NULL);
toc_entry->subentries = g_list_reverse (toc_entry->subentries);
gst_toc_entry_get_start_stop_times (((GstTocEntry *)
toc_entry->subentries->data), NULL, &stop);
gst_toc_entry_set_start_stop_times (toc_entry, start, stop);
to_write = g_list_append (to_write, toc_entry);
} else {
toc_entry = NULL;
to_write = toc->entries;
}
/* finally write chapters */
mux->chapters_pos = ebml->pos;
cur = to_write;
while (cur != NULL) {
gst_matroska_mux_write_chapter_edition (mux, cur->data, ebml,
&master_chapters);
cur = cur->next;
}
/* close master element if any edition was written */
if (G_LIKELY (master_chapters != 0))
gst_ebml_write_master_finish (ebml, master_chapters);
if (toc_entry != NULL) {
g_list_free (toc_entry->subentries);
toc_entry->subentries = NULL;
gst_toc_entry_unref (toc_entry);
g_list_free (to_write);
}
}
#endif
/* lastly, flush the cache */
gst_ebml_write_flush_cache (ebml, FALSE, 0);
#if 0
if (toc != NULL)
gst_toc_unref (toc);
#endif
}
/* TODO: more sensible tag mappings */
static const struct
{
const gchar *matroska_tagname;
const gchar *gstreamer_tagname;
}
gst_matroska_tag_conv[] = {
{
GST_MATROSKA_TAG_ID_TITLE, GST_TAG_TITLE}, {
GST_MATROSKA_TAG_ID_ARTIST, GST_TAG_ARTIST}, {
GST_MATROSKA_TAG_ID_ALBUM, GST_TAG_ALBUM}, {
GST_MATROSKA_TAG_ID_COMMENTS, GST_TAG_COMMENT}, {
GST_MATROSKA_TAG_ID_BITSPS, GST_TAG_BITRATE}, {
GST_MATROSKA_TAG_ID_BPS, GST_TAG_BITRATE}, {
GST_MATROSKA_TAG_ID_ENCODER, GST_TAG_ENCODER}, {
GST_MATROSKA_TAG_ID_DATE, GST_TAG_DATE}, {
GST_MATROSKA_TAG_ID_ISRC, GST_TAG_ISRC}, {
GST_MATROSKA_TAG_ID_COPYRIGHT, GST_TAG_COPYRIGHT}, {
GST_MATROSKA_TAG_ID_BPM, GST_TAG_BEATS_PER_MINUTE}, {
GST_MATROSKA_TAG_ID_TERMS_OF_USE, GST_TAG_LICENSE}, {
GST_MATROSKA_TAG_ID_COMPOSER, GST_TAG_COMPOSER}, {
GST_MATROSKA_TAG_ID_LEAD_PERFORMER, GST_TAG_PERFORMER}, {
GST_MATROSKA_TAG_ID_GENRE, GST_TAG_GENRE}
};
/* Every stagefright implementation on android up to and including 6.0.1 is using
libwebm with bug in matroska parsing, where it will choke on empty tag elements;
so before outputting tags and tag elements we better make sure that there are
actually tags we are going to write */
static gboolean
gst_matroska_mux_tag_list_is_empty (const GstTagList * list)
{
int i;
for (i = 0; i < gst_tag_list_n_tags (list); i++) {
const gchar *tag = gst_tag_list_nth_tag_name (list, i);
int i;
for (i = 0; i < G_N_ELEMENTS (gst_matroska_tag_conv); i++) {
const gchar *tagname_gst = gst_matroska_tag_conv[i].gstreamer_tagname;
if (strcmp (tagname_gst, tag) == 0) {
GValue src = { 0, };
gchar *dest;
if (!gst_tag_list_copy_value (&src, list, tag))
break;
dest = gst_value_serialize (&src);
g_value_unset (&src);
if (dest) {
g_free (dest);
return FALSE;
}
}
}
}
return TRUE;
}
static void
gst_matroska_mux_write_simple_tag (const GstTagList * list, const gchar * tag,
gpointer data)
{
GstEbmlWrite *ebml = (GstEbmlWrite *) data;
guint i;
guint64 simpletag_master;
for (i = 0; i < G_N_ELEMENTS (gst_matroska_tag_conv); i++) {
const gchar *tagname_gst = gst_matroska_tag_conv[i].gstreamer_tagname;
const gchar *tagname_mkv = gst_matroska_tag_conv[i].matroska_tagname;
if (strcmp (tagname_gst, tag) == 0) {
GValue src = { 0, };
gchar *dest;
if (!gst_tag_list_copy_value (&src, list, tag))
break;
if ((dest = gst_value_serialize (&src))) {
simpletag_master = gst_ebml_write_master_start (ebml,
GST_MATROSKA_ID_SIMPLETAG);
gst_ebml_write_ascii (ebml, GST_MATROSKA_ID_TAGNAME, tagname_mkv);
gst_ebml_write_utf8 (ebml, GST_MATROSKA_ID_TAGSTRING, dest);
gst_ebml_write_master_finish (ebml, simpletag_master);
g_free (dest);
} else {
GST_WARNING ("Can't transform tag '%s' to string", tagname_mkv);
}
g_value_unset (&src);
break;
}
}
}
static void
gst_matroska_mux_write_stream_tags (GstMatroskaMux * mux, GstMatroskaPad * mpad)
{
guint64 master_tag, master_targets;
GstEbmlWrite *ebml;
ebml = mux->ebml_write;
if (G_UNLIKELY (mpad->tags == NULL
|| gst_matroska_mux_tag_list_is_empty (mpad->tags)))
return;
master_tag = gst_ebml_write_master_start (ebml, GST_MATROSKA_ID_TAG);
master_targets = gst_ebml_write_master_start (ebml, GST_MATROSKA_ID_TARGETS);
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_TARGETTRACKUID, mpad->track->uid);
gst_ebml_write_master_finish (ebml, master_targets);
gst_tag_list_foreach (mpad->tags, gst_matroska_mux_write_simple_tag, ebml);
gst_ebml_write_master_finish (ebml, master_tag);
}
static void
gst_matroska_mux_write_streams_tags (GstMatroskaMux * mux)
{
GSList *walk;
for (walk = mux->collect->data; walk; walk = g_slist_next (walk)) {
GstMatroskaPad *collect_pad;
collect_pad = (GstMatroskaPad *) walk->data;
gst_matroska_mux_write_stream_tags (mux, collect_pad);
}
}
static gboolean
gst_matroska_mux_streams_have_tags (GstMatroskaMux * mux)
{
GSList *walk;
for (walk = mux->collect->data; walk; walk = g_slist_next (walk)) {
GstMatroskaPad *collect_pad;
collect_pad = (GstMatroskaPad *) walk->data;
if (!gst_matroska_mux_tag_list_is_empty (collect_pad->tags))
return TRUE;
}
return FALSE;
}
#if 0
static void
gst_matroska_mux_write_toc_entry_tags (GstMatroskaMux * mux,
const GstTocEntry * entry, guint64 * master_tags)
{
guint64 master_tag, master_targets;
GstEbmlWrite *ebml;
GList *cur;
ebml = mux->ebml_write;
if (G_UNLIKELY (entry->tags != NULL
&& !gst_matroska_mux_tag_list_is_empty (entry->tags))) {
if (*master_tags == 0) {
mux->tags_pos = ebml->pos;
*master_tags = gst_ebml_write_master_start (ebml, GST_MATROSKA_ID_TAGS);
}
master_tag = gst_ebml_write_master_start (ebml, GST_MATROSKA_ID_TAG);
master_targets =
gst_ebml_write_master_start (ebml, GST_MATROSKA_ID_TARGETS);
if (entry->type == GST_TOC_ENTRY_TYPE_EDITION)
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_TARGETEDITIONUID,
g_ascii_strtoull (entry->uid, NULL, 10));
else
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_TARGETCHAPTERUID,
g_ascii_strtoull (entry->uid, NULL, 10));
gst_ebml_write_master_finish (ebml, master_targets);
gst_tag_list_foreach (entry->tags, gst_matroska_mux_write_simple_tag, ebml);
gst_ebml_write_master_finish (ebml, master_tag);
}
cur = entry->subentries;
while (cur != NULL) {
gst_matroska_mux_write_toc_entry_tags (mux, cur->data, master_tags);
cur = cur->next;
}
}
#endif
/**
* gst_matroska_mux_finish:
* @mux: #GstMatroskaMux
*
* Finish a new matroska file (write index etc...)
*/
static void
gst_matroska_mux_finish (GstMatroskaMux * mux)
{
GstEbmlWrite *ebml = mux->ebml_write;
guint64 pos;
guint64 duration = 0;
GSList *collected;
const GstTagList *tags;
gboolean has_main_tags;
/* finish last cluster */
if (mux->cluster) {
gst_ebml_write_master_finish (ebml, mux->cluster);
}
/* cues */
if (mux->index != NULL) {
guint n;
guint64 master, pointentry_master, trackpos_master;
mux->cues_pos = ebml->pos;
gst_ebml_write_set_cache (ebml, 12 + 41 * mux->num_indexes);
master = gst_ebml_write_master_start (ebml, GST_MATROSKA_ID_CUES);
for (n = 0; n < mux->num_indexes; n++) {
GstMatroskaIndex *idx = &mux->index[n];
pointentry_master = gst_ebml_write_master_start (ebml,
GST_MATROSKA_ID_POINTENTRY);
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_CUETIME,
idx->time / mux->time_scale);
trackpos_master = gst_ebml_write_master_start (ebml,
GST_MATROSKA_ID_CUETRACKPOSITIONS);
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_CUETRACK, idx->track);
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_CUECLUSTERPOSITION,
idx->pos - mux->segment_master);
gst_ebml_write_master_finish (ebml, trackpos_master);
gst_ebml_write_master_finish (ebml, pointentry_master);
}
gst_ebml_write_master_finish (ebml, master);
gst_ebml_write_flush_cache (ebml, FALSE, GST_CLOCK_TIME_NONE);
}
/* tags */
tags = gst_tag_setter_get_tag_list (GST_TAG_SETTER (mux));
has_main_tags = tags != NULL && !gst_matroska_mux_tag_list_is_empty (tags);
if (has_main_tags || gst_matroska_mux_streams_have_tags (mux)
|| gst_toc_setter_get_toc (GST_TOC_SETTER (mux)) != NULL) {
guint64 master_tags = 0, master_tag;
#if 0
const GstToc *toc;
#endif
GST_DEBUG_OBJECT (mux, "Writing tags");
#if 0
toc = gst_toc_setter_get_toc (GST_TOC_SETTER (mux));
#endif
if (has_main_tags) {
/* TODO: maybe limit via the TARGETS id by looking at the source pad */
mux->tags_pos = ebml->pos;
master_tags = gst_ebml_write_master_start (ebml, GST_MATROSKA_ID_TAGS);
master_tag = gst_ebml_write_master_start (ebml, GST_MATROSKA_ID_TAG);
if (tags != NULL)
gst_tag_list_foreach (tags, gst_matroska_mux_write_simple_tag, ebml);
#if 0
if (toc != NULL)
gst_tag_list_foreach (toc->tags, gst_matroska_mux_write_simple_tag,
ebml);
#endif
gst_ebml_write_master_finish (ebml, master_tag);
}
#if 0
if (toc != NULL) {
cur = toc->entries;
while (cur != NULL) {
gst_matroska_mux_write_toc_entry_tags (mux, cur->data, &master_tags);
cur = cur->next;
}
}
#endif
if (master_tags == 0 && gst_matroska_mux_streams_have_tags (mux)) {
mux->tags_pos = ebml->pos;
master_tags = gst_ebml_write_master_start (ebml, GST_MATROSKA_ID_TAGS);
}
gst_matroska_mux_write_streams_tags (mux);
if (master_tags != 0)
gst_ebml_write_master_finish (ebml, master_tags);
}
/* update seekhead. We know that:
* - a seekhead contains 5 entries.
* - order of entries is as above.
* - a seekhead has a 4-byte header + 8-byte length
* - each entry is 2-byte master, 2-byte ID pointer,
* 2-byte length pointer, all 8/1-byte length, 4-
* byte ID and 8-byte length pointer, where the
* length pointer starts at 20.
* - all entries are local to the segment (so pos - segment_master).
* - so each entry is at 12 + 20 + num * 28. */
gst_ebml_replace_uint (ebml, mux->seekhead_pos + 32,
mux->info_pos - mux->segment_master);
gst_ebml_replace_uint (ebml, mux->seekhead_pos + 60,
mux->tracks_pos - mux->segment_master);
if (gst_toc_setter_get_toc (GST_TOC_SETTER (mux)) != NULL
&& mux->chapters_pos > 0) {
gst_ebml_replace_uint (ebml, mux->seekhead_pos + 88,
mux->chapters_pos - mux->segment_master);
} else {
/* void'ify */
guint64 my_pos = ebml->pos;
gst_ebml_write_seek (ebml, mux->seekhead_pos + 68);
gst_ebml_write_buffer_header (ebml, GST_EBML_ID_VOID, 26);
gst_ebml_write_seek (ebml, my_pos);
}
if (mux->index != NULL) {
gst_ebml_replace_uint (ebml, mux->seekhead_pos + 116,
mux->cues_pos - mux->segment_master);
} else {
/* void'ify */
guint64 my_pos = ebml->pos;
gst_ebml_write_seek (ebml, mux->seekhead_pos + 96);
gst_ebml_write_buffer_header (ebml, GST_EBML_ID_VOID, 26);
gst_ebml_write_seek (ebml, my_pos);
}
if (tags != NULL) {
gst_ebml_replace_uint (ebml, mux->seekhead_pos + 144,
mux->tags_pos - mux->segment_master);
} else {
/* void'ify */
guint64 my_pos = ebml->pos;
gst_ebml_write_seek (ebml, mux->seekhead_pos + 124);
gst_ebml_write_buffer_header (ebml, GST_EBML_ID_VOID, 26);
gst_ebml_write_seek (ebml, my_pos);
}
/* loop tracks:
* - first get the overall duration
* (a released track may have left a duration in here)
* - write some track header data for subtitles
*/
duration = mux->duration;
pos = ebml->pos;
for (collected = mux->collect->data; collected;
collected = g_slist_next (collected)) {
GstMatroskaPad *collect_pad;
/*
* observed duration, this will never remain GST_CLOCK_TIME_NONE
* since this means buffer without timestamps that is not possibile
*/
GstClockTime collected_duration = GST_CLOCK_TIME_NONE;
collect_pad = (GstMatroskaPad *) collected->data;
GST_DEBUG_OBJECT (mux,
"Pad %" GST_PTR_FORMAT " start ts %" GST_TIME_FORMAT
" end ts %" GST_TIME_FORMAT, collect_pad,
GST_TIME_ARGS (collect_pad->start_ts),
GST_TIME_ARGS (collect_pad->end_ts));
if (GST_CLOCK_TIME_IS_VALID (collect_pad->start_ts) &&
GST_CLOCK_TIME_IS_VALID (collect_pad->end_ts)) {
collected_duration =
GST_CLOCK_DIFF (collect_pad->start_ts, collect_pad->end_ts);
GST_DEBUG_OBJECT (collect_pad,
"final track duration: %" GST_TIME_FORMAT,
GST_TIME_ARGS (collected_duration));
} else {
GST_WARNING_OBJECT (collect_pad, "unable to get final track duration");
}
if (GST_CLOCK_TIME_IS_VALID (collected_duration) &&
duration < collected_duration)
duration = collected_duration;
}
/* seek back (optional, but do anyway) */
gst_ebml_write_seek (ebml, pos);
/* update duration */
if (duration != 0) {
GST_DEBUG_OBJECT (mux, "final total duration: %" GST_TIME_FORMAT,
GST_TIME_ARGS (duration));
pos = mux->ebml_write->pos;
gst_ebml_write_seek (ebml, mux->duration_pos);
gst_ebml_write_float (ebml, GST_MATROSKA_ID_DURATION,
gst_guint64_to_gdouble (duration) /
gst_guint64_to_gdouble (mux->time_scale));
gst_ebml_write_seek (ebml, pos);
} else {
/* void'ify */
guint64 my_pos = ebml->pos;
gst_ebml_write_seek (ebml, mux->duration_pos);
gst_ebml_write_buffer_header (ebml, GST_EBML_ID_VOID, 8);
gst_ebml_write_seek (ebml, my_pos);
}
GST_DEBUG_OBJECT (mux, "finishing segment");
/* finish segment - this also writes element length */
gst_ebml_write_master_finish (ebml, mux->segment_pos);
}
/**
* gst_matroska_mux_buffer_header:
* @track: Track context.
* @relative_timestamp: relative timestamp of the buffer
* @flags: Buffer flags.
*
* Create a buffer containing buffer header.
*
* Returns: New buffer.
*/
static GstBuffer *
gst_matroska_mux_create_buffer_header (GstMatroskaTrackContext * track,
gint16 relative_timestamp, int flags)
{
GstBuffer *hdr;
guint8 *data = g_malloc (4);
hdr = gst_buffer_new_wrapped (data, 4);
/* track num - FIXME: what if num >= 0x80 (unlikely)? */
data[0] = track->num | 0x80;
/* time relative to clustertime */
GST_WRITE_UINT16_BE (data + 1, relative_timestamp);
/* flags */
data[3] = flags;
return hdr;
}
#define DIRAC_PARSE_CODE_SEQUENCE_HEADER 0x00
#define DIRAC_PARSE_CODE_END_OF_SEQUENCE 0x10
#define DIRAC_PARSE_CODE_IS_PICTURE(x) ((x & 0x08) != 0)
static GstBuffer *
gst_matroska_mux_handle_dirac_packet (GstMatroskaMux * mux,
GstMatroskaPad * collect_pad, GstBuffer * buf)
{
GstMatroskaTrackVideoContext *ctx =
(GstMatroskaTrackVideoContext *) collect_pad->track;
GstMapInfo map;
guint8 *data;
gsize size;
guint8 parse_code;
guint32 next_parse_offset;
GstBuffer *ret = NULL;
gboolean is_muxing_unit = FALSE;
gst_buffer_map (buf, &map, GST_MAP_READ);
data = map.data;
size = map.size;
if (size < 13) {
gst_buffer_unmap (buf, &map);
gst_buffer_unref (buf);
return ret;
}
/* Check if this buffer contains a picture or end-of-sequence packet */
while (size >= 13) {
if (GST_READ_UINT32_BE (data) != 0x42424344 /* 'BBCD' */ ) {
gst_buffer_unmap (buf, &map);
gst_buffer_unref (buf);
return ret;
}
parse_code = GST_READ_UINT8 (data + 4);
if (parse_code == DIRAC_PARSE_CODE_SEQUENCE_HEADER) {
if (ctx->dirac_unit) {
gst_buffer_unref (ctx->dirac_unit);
ctx->dirac_unit = NULL;
}
} else if (DIRAC_PARSE_CODE_IS_PICTURE (parse_code) ||
parse_code == DIRAC_PARSE_CODE_END_OF_SEQUENCE) {
is_muxing_unit = TRUE;
break;
}
next_parse_offset = GST_READ_UINT32_BE (data + 5);
if (G_UNLIKELY (next_parse_offset == 0 || next_parse_offset > size))
break;
data += next_parse_offset;
size -= next_parse_offset;
}
if (ctx->dirac_unit)
ctx->dirac_unit = gst_buffer_append (ctx->dirac_unit, gst_buffer_ref (buf));
else
ctx->dirac_unit = gst_buffer_ref (buf);
gst_buffer_unmap (buf, &map);
if (is_muxing_unit) {
ret = gst_buffer_make_writable (ctx->dirac_unit);
ctx->dirac_unit = NULL;
gst_buffer_copy_into (ret, buf,
GST_BUFFER_COPY_FLAGS | GST_BUFFER_COPY_TIMESTAMPS, 0, -1);
gst_buffer_unref (buf);
} else {
gst_buffer_unref (buf);
ret = NULL;
}
return ret;
}
static void
gst_matroska_mux_stop_streamheader (GstMatroskaMux * mux)
{
GstCaps *caps;
GstStructure *s;
GValue streamheader = { 0 };
GValue bufval = { 0 };
GstBuffer *streamheader_buffer;
GstEbmlWrite *ebml = mux->ebml_write;
streamheader_buffer = gst_ebml_stop_streamheader (ebml);
caps = gst_caps_copy (mux->ebml_write->caps);
s = gst_caps_get_structure (caps, 0);
g_value_init (&streamheader, GST_TYPE_ARRAY);
g_value_init (&bufval, GST_TYPE_BUFFER);
GST_BUFFER_FLAG_SET (streamheader_buffer, GST_BUFFER_FLAG_HEADER);
gst_value_set_buffer (&bufval, streamheader_buffer);
gst_value_array_append_value (&streamheader, &bufval);
g_value_unset (&bufval);
gst_structure_set_value (s, "streamheader", &streamheader);
g_value_unset (&streamheader);
gst_caps_replace (&ebml->caps, caps);
gst_buffer_unref (streamheader_buffer);
gst_pad_set_caps (mux->srcpad, caps);
gst_caps_unref (caps);
}
/**
* gst_matroska_mux_write_data:
* @mux: #GstMatroskaMux
* @collect_pad: #GstMatroskaPad with the data
*
* Write collected data (called from gst_matroska_mux_collected).
*
* Returns: Result of the gst_pad_push issued to write the data.
*/
static GstFlowReturn
gst_matroska_mux_write_data (GstMatroskaMux * mux, GstMatroskaPad * collect_pad,
GstBuffer * buf)
{
GstEbmlWrite *ebml = mux->ebml_write;
GstBuffer *hdr;
guint64 blockgroup;
gboolean write_duration;
gint16 relative_timestamp;
gint64 relative_timestamp64;
guint64 block_duration, duration_diff = 0;
gboolean is_video_keyframe = FALSE;
gboolean is_video_invisible = FALSE;
GstMatroskamuxPad *pad;
gint flags = 0;
GstClockTime buffer_timestamp;
GstAudioClippingMeta *cmeta = NULL;
/* write data */
pad = GST_MATROSKAMUX_PAD_CAST (collect_pad->collect.pad);
/* vorbis/theora headers are retrieved from caps and put in CodecPrivate */
if (collect_pad->track->xiph_headers_to_skip > 0) {
GST_LOG_OBJECT (collect_pad->collect.pad, "dropping streamheader buffer");
gst_buffer_unref (buf);
--collect_pad->track->xiph_headers_to_skip;
return GST_FLOW_OK;
}
/* for dirac we have to queue up everything up to a picture unit */
if (!strcmp (collect_pad->track->codec_id, GST_MATROSKA_CODEC_ID_VIDEO_DIRAC)) {
buf = gst_matroska_mux_handle_dirac_packet (mux, collect_pad, buf);
if (!buf)
return GST_FLOW_OK;
} else if (!strcmp (collect_pad->track->codec_id,
GST_MATROSKA_CODEC_ID_VIDEO_PRORES)) {
/* Remove the 'Frame container atom' header' */
buf = gst_buffer_make_writable (buf);
gst_buffer_resize (buf, 8, gst_buffer_get_size (buf) - 8);
}
buffer_timestamp =
gst_matroska_track_get_buffer_timestamp (collect_pad->track, buf);
/* hm, invalid timestamp (due to --to be fixed--- element upstream);
* this would wreak havoc with time stored in matroska file */
/* TODO: maybe calculate a timestamp by using the previous timestamp
* and default duration */
if (!GST_CLOCK_TIME_IS_VALID (buffer_timestamp)) {
GST_WARNING_OBJECT (collect_pad->collect.pad,
"Invalid buffer timestamp; dropping buffer");
gst_buffer_unref (buf);
return GST_FLOW_OK;
}
if (!strcmp (collect_pad->track->codec_id, GST_MATROSKA_CODEC_ID_AUDIO_OPUS)
&& collect_pad->track->codec_delay) {
/* All timestamps should include the codec delay */
if (buffer_timestamp > collect_pad->track->codec_delay) {
buffer_timestamp += collect_pad->track->codec_delay;
} else {
buffer_timestamp = 0;
duration_diff = collect_pad->track->codec_delay - buffer_timestamp;
}
}
/* set the timestamp for outgoing buffers */
ebml->timestamp = buffer_timestamp;
if (collect_pad->track->type == GST_MATROSKA_TRACK_TYPE_VIDEO) {
if (!GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT)) {
GST_LOG_OBJECT (mux, "have video keyframe, ts=%" GST_TIME_FORMAT,
GST_TIME_ARGS (buffer_timestamp));
is_video_keyframe = TRUE;
} else if (GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DECODE_ONLY) &&
(!strcmp (collect_pad->track->codec_id, GST_MATROSKA_CODEC_ID_VIDEO_VP8)
|| !strcmp (collect_pad->track->codec_id,
GST_MATROSKA_CODEC_ID_VIDEO_VP9))) {
GST_LOG_OBJECT (mux,
"have VP8 video invisible frame, " "ts=%" GST_TIME_FORMAT,
GST_TIME_ARGS (buffer_timestamp));
is_video_invisible = TRUE;
}
}
if (mux->cluster) {
/* start a new cluster at every keyframe, at every GstForceKeyUnit event,
* or when we may be reaching the limit of the relative timestamp */
if (mux->cluster_time +
mux->max_cluster_duration < buffer_timestamp
|| is_video_keyframe || mux->force_key_unit_event) {
if (!mux->ebml_write->streamable)
gst_ebml_write_master_finish (ebml, mux->cluster);
/* Forward the GstForceKeyUnit event after finishing the cluster */
if (mux->force_key_unit_event) {
gst_pad_push_event (mux->srcpad, mux->force_key_unit_event);
mux->force_key_unit_event = NULL;
}
mux->prev_cluster_size = ebml->pos - mux->cluster_pos;
mux->cluster_pos = ebml->pos;
gst_ebml_write_set_cache (ebml, 0x20);
mux->cluster =
gst_ebml_write_master_start (ebml, GST_MATROSKA_ID_CLUSTER);
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_CLUSTERTIMECODE,
gst_util_uint64_scale (buffer_timestamp, 1, mux->time_scale));
GST_LOG_OBJECT (mux, "cluster timestamp %" G_GUINT64_FORMAT,
gst_util_uint64_scale (buffer_timestamp, 1, mux->time_scale));
gst_ebml_write_flush_cache (ebml, TRUE, buffer_timestamp);
mux->cluster_time = buffer_timestamp;
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_PREVSIZE,
mux->prev_cluster_size);
}
} else {
/* first cluster */
mux->cluster_pos = ebml->pos;
gst_ebml_write_set_cache (ebml, 0x20);
mux->cluster = gst_ebml_write_master_start (ebml, GST_MATROSKA_ID_CLUSTER);
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_CLUSTERTIMECODE,
gst_util_uint64_scale (buffer_timestamp, 1, mux->time_scale));
gst_ebml_write_flush_cache (ebml, TRUE, buffer_timestamp);
mux->cluster_time = buffer_timestamp;
}
/* We currently write index entries for all video tracks or for the audio
* track in a single-track audio file. This could be improved by keeping the
* index only for the *first* video track. */
/* TODO: index is useful for every track, should contain the number of
* the block in the cluster which contains the timestamp, should also work
* for files with multiple audio tracks.
*/
if (!mux->ebml_write->streamable &&
(is_video_keyframe ||
((collect_pad->track->type == GST_MATROSKA_TRACK_TYPE_AUDIO) &&
(mux->num_streams == 1)))) {
gint last_idx = -1;
if (mux->min_index_interval != 0) {
for (last_idx = mux->num_indexes - 1; last_idx >= 0; last_idx--) {
if (mux->index[last_idx].track == collect_pad->track->num)
break;
}
}
if (last_idx < 0 || mux->min_index_interval == 0 ||
(GST_CLOCK_DIFF (mux->index[last_idx].time, buffer_timestamp)
>= mux->min_index_interval)) {
GstMatroskaIndex *idx;
if (mux->num_indexes % 32 == 0) {
mux->index = g_renew (GstMatroskaIndex, mux->index,
mux->num_indexes + 32);
}
idx = &mux->index[mux->num_indexes++];
idx->pos = mux->cluster_pos;
idx->time = buffer_timestamp;
idx->track = collect_pad->track->num;
}
}
/* Check if the duration differs from the default duration. */
write_duration = FALSE;
block_duration = 0;
if (pad->frame_duration && GST_BUFFER_DURATION_IS_VALID (buf)) {
block_duration = GST_BUFFER_DURATION (buf) + duration_diff;
block_duration = gst_util_uint64_scale (block_duration, 1, mux->time_scale);
/* small difference should be ok. */
if (block_duration > collect_pad->default_duration_scaled + 1 ||
block_duration < collect_pad->default_duration_scaled - 1) {
write_duration = TRUE;
}
}
/* write the block, for doctype v2 use SimpleBlock if possible
* one slice (*breath*).
* FIXME: Need to do correct lacing! */
relative_timestamp64 = buffer_timestamp - mux->cluster_time;
if (relative_timestamp64 >= 0) {
/* round the timestamp */
relative_timestamp64 += gst_util_uint64_scale (mux->time_scale, 1, 2);
relative_timestamp = gst_util_uint64_scale (relative_timestamp64, 1,
mux->time_scale);
} else {
/* round the timestamp */
relative_timestamp64 -= gst_util_uint64_scale (mux->time_scale, 1, 2);
relative_timestamp =
-((gint16) gst_util_uint64_scale (-relative_timestamp64, 1,
mux->time_scale));
}
if (is_video_invisible)
flags |= 0x08;
if (!strcmp (collect_pad->track->codec_id, GST_MATROSKA_CODEC_ID_AUDIO_OPUS)) {
cmeta = gst_buffer_get_audio_clipping_meta (buf);
g_assert (!cmeta || cmeta->format == GST_FORMAT_DEFAULT);
/* Start clipping is done via header and CodecDelay */
if (cmeta && !cmeta->end)
cmeta = NULL;
}
if (mux->doctype_version > 1 && !write_duration && !cmeta) {
if (is_video_keyframe)
flags |= 0x80;
hdr =
gst_matroska_mux_create_buffer_header (collect_pad->track,
relative_timestamp, flags);
gst_ebml_write_set_cache (ebml, 0x40);
gst_ebml_write_buffer_header (ebml, GST_MATROSKA_ID_SIMPLEBLOCK,
gst_buffer_get_size (buf) + gst_buffer_get_size (hdr));
gst_ebml_write_buffer (ebml, hdr);
gst_ebml_write_flush_cache (ebml, FALSE, buffer_timestamp);
gst_ebml_write_buffer (ebml, buf);
return gst_ebml_last_write_result (ebml);
} else {
gst_ebml_write_set_cache (ebml, gst_buffer_get_size (buf) * 2);
/* write and call order slightly unnatural,
* but avoids seek and minizes pushing */
blockgroup = gst_ebml_write_master_start (ebml, GST_MATROSKA_ID_BLOCKGROUP);
hdr =
gst_matroska_mux_create_buffer_header (collect_pad->track,
relative_timestamp, flags);
if (write_duration)
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_BLOCKDURATION, block_duration);
if (!strcmp (collect_pad->track->codec_id, GST_MATROSKA_CODEC_ID_AUDIO_OPUS)
&& cmeta) {
/* Start clipping is done via header and CodecDelay */
if (cmeta->end) {
guint64 end =
gst_util_uint64_scale_round (cmeta->end, GST_SECOND, 48000);
gst_ebml_write_sint (ebml, GST_MATROSKA_ID_DISCARDPADDING, end);
}
}
gst_ebml_write_buffer_header (ebml, GST_MATROSKA_ID_BLOCK,
gst_buffer_get_size (buf) + gst_buffer_get_size (hdr));
gst_ebml_write_buffer (ebml, hdr);
gst_ebml_write_master_finish_full (ebml, blockgroup,
gst_buffer_get_size (buf));
gst_ebml_write_flush_cache (ebml, FALSE, buffer_timestamp);
gst_ebml_write_buffer (ebml, buf);
return gst_ebml_last_write_result (ebml);
}
}
/**
* gst_matroska_mux_handle_buffer:
* @pads: #GstCollectPads
* @uuser_data: #GstMatroskaMux
*
* Collectpads callback.
*
* Returns: #GstFlowReturn
*/
static GstFlowReturn
gst_matroska_mux_handle_buffer (GstCollectPads * pads, GstCollectData * data,
GstBuffer * buf, gpointer user_data)
{
GstClockTime buffer_timestamp;
GstMatroskaMux *mux = GST_MATROSKA_MUX (user_data);
GstEbmlWrite *ebml = mux->ebml_write;
GstMatroskaPad *best;
GstFlowReturn ret = GST_FLOW_OK;
GST_DEBUG_OBJECT (mux, "Collected pads");
/* start with a header */
if (mux->state == GST_MATROSKA_MUX_STATE_START) {
if (mux->collect->data == NULL) {
GST_ELEMENT_ERROR (mux, STREAM, MUX, (NULL),
("No input streams configured"));
return GST_FLOW_ERROR;
}
mux->state = GST_MATROSKA_MUX_STATE_HEADER;
gst_ebml_start_streamheader (ebml);
gst_matroska_mux_start (mux);
gst_matroska_mux_stop_streamheader (mux);
mux->state = GST_MATROSKA_MUX_STATE_DATA;
}
/* provided with stream to write from */
best = (GstMatroskaPad *) data;
/* if there is no best pad, we have reached EOS */
if (best == NULL) {
GST_DEBUG_OBJECT (mux, "No best pad. Finishing...");
if (!mux->ebml_write->streamable) {
gst_matroska_mux_finish (mux);
} else {
GST_DEBUG_OBJECT (mux, "... but streamable, nothing to finish");
}
gst_pad_push_event (mux->srcpad, gst_event_new_eos ());
ret = GST_FLOW_EOS;
goto exit;
}
if (best->track->codec_id == NULL) {
GST_ERROR_OBJECT (best->collect.pad, "No codec-id for pad");
ret = GST_FLOW_NOT_NEGOTIATED;
goto exit;
}
/* if we have a best stream, should also have a buffer */
g_assert (buf);
buffer_timestamp = gst_matroska_track_get_buffer_timestamp (best->track, buf);
GST_DEBUG_OBJECT (best->collect.pad, "best pad - buffer ts %"
GST_TIME_FORMAT " dur %" GST_TIME_FORMAT,
GST_TIME_ARGS (buffer_timestamp),
GST_TIME_ARGS (GST_BUFFER_DURATION (buf)));
/* make note of first and last encountered timestamps, so we can calculate
* the actual duration later when we send an updated header on eos */
if (GST_CLOCK_TIME_IS_VALID (buffer_timestamp)) {
GstClockTime start_ts = buffer_timestamp;
GstClockTime end_ts = start_ts;
if (GST_BUFFER_DURATION_IS_VALID (buf))
end_ts += GST_BUFFER_DURATION (buf);
else if (best->track->default_duration)
end_ts += best->track->default_duration;
if (!GST_CLOCK_TIME_IS_VALID (best->end_ts) || end_ts > best->end_ts)
best->end_ts = end_ts;
if (G_UNLIKELY (best->start_ts == GST_CLOCK_TIME_NONE ||
start_ts < best->start_ts))
best->start_ts = start_ts;
}
/* write one buffer */
ret = gst_matroska_mux_write_data (mux, best, buf);
exit:
return ret;
}
/**
* gst_matroska_mux_change_state:
* @element: #GstMatroskaMux
* @transition: State change transition.
*
* Change the muxer state.
*
* Returns: #GstStateChangeReturn
*/
static GstStateChangeReturn
gst_matroska_mux_change_state (GstElement * element, GstStateChange transition)
{
GstStateChangeReturn ret;
GstMatroskaMux *mux = GST_MATROSKA_MUX (element);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
gst_collect_pads_start (mux->collect);
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
gst_collect_pads_stop (mux->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_matroska_mux_reset (GST_ELEMENT (mux));
break;
case GST_STATE_CHANGE_READY_TO_NULL:
break;
default:
break;
}
return ret;
}
static void
gst_matroska_mux_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstMatroskaMux *mux;
g_return_if_fail (GST_IS_MATROSKA_MUX (object));
mux = GST_MATROSKA_MUX (object);
switch (prop_id) {
case PROP_WRITING_APP:
if (!g_value_get_string (value)) {
GST_WARNING_OBJECT (mux, "writing-app property can not be NULL");
break;
}
g_free (mux->writing_app);
mux->writing_app = g_value_dup_string (value);
break;
case PROP_DOCTYPE_VERSION:
mux->doctype_version = g_value_get_int (value);
break;
case PROP_MIN_INDEX_INTERVAL:
mux->min_index_interval = g_value_get_int64 (value);
break;
case PROP_STREAMABLE:
mux->ebml_write->streamable = g_value_get_boolean (value);
break;
case PROP_TIMECODESCALE:
mux->time_scale = g_value_get_int64 (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_matroska_mux_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
GstMatroskaMux *mux;
g_return_if_fail (GST_IS_MATROSKA_MUX (object));
mux = GST_MATROSKA_MUX (object);
switch (prop_id) {
case PROP_WRITING_APP:
g_value_set_string (value, mux->writing_app);
break;
case PROP_DOCTYPE_VERSION:
g_value_set_int (value, mux->doctype_version);
break;
case PROP_MIN_INDEX_INTERVAL:
g_value_set_int64 (value, mux->min_index_interval);
break;
case PROP_STREAMABLE:
g_value_set_boolean (value, mux->ebml_write->streamable);
break;
case PROP_TIMECODESCALE:
g_value_set_int64 (value, mux->time_scale);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
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