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gstreamer/gst/matroska/matroska-mux.c
Zaheer Abbas Merali 45f711044f matroskamux: change 2 second limit per cluster 
Start cluster at every keyframe or when we would overflow the previous
cluster's relative timestamp field. This would avoid as much as possible
starting clusters at non-keyframes.
2010-06-10 01:32:15 +02:00

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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>
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, 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 -v filesrc location=/path/to/mp3 ! mp3parse ! 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 -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 <string.h>
#include <gst/riff/riff-media.h>
#include <gst/tag/tag.h>
#include "matroska-mux.h"
#include "matroska-ids.h"
GST_DEBUG_CATEGORY_STATIC (matroskamux_debug);
#define GST_CAT_DEFAULT matroskamux_debug
enum
{
ARG_0,
ARG_WRITING_APP,
ARG_DOCTYPE_VERSION,
ARG_MIN_INDEX_INTERVAL,
ARG_STREAMABLE
};
#define DEFAULT_DOCTYPE_VERSION 2
#define DEFAULT_WRITING_APP "GStreamer Matroska muxer"
#define DEFAULT_MIN_INDEX_INTERVAL 0
#define DEFAULT_STREAMABLE FALSE
/* 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")
);
#define COMMON_VIDEO_CAPS \
"width = (int) [ 16, 4096 ], " \
"height = (int) [ 16, 4096 ], " \
"framerate = (fraction) [ 0, MAX ]"
#define COMMON_VIDEO_CAPS_NO_FRAMERATE \
"width = (int) [ 16, 4096 ], " \
"height = (int) [ 16, 4096 ] "
/* FIXME:
* * require codec data, etc as needed
*/
static GstStaticPadTemplate videosink_templ =
GST_STATIC_PAD_TEMPLATE ("video_%d",
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, "
COMMON_VIDEO_CAPS "; "
"video/x-divx, "
COMMON_VIDEO_CAPS "; "
"video/x-xvid, "
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_NO_FRAMERATE "; "
"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-raw-yuv, "
"format = (fourcc) { YUY2, I420, YV12, UYVY, AYUV }, "
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_%d",
GST_PAD_SINK,
GST_PAD_REQUEST,
GST_STATIC_CAPS ("audio/mpeg, "
"mpegversion = (int) 1, "
"layer = (int) [ 1, 3 ], "
"stream-format = (string) { raw }, "
COMMON_AUDIO_CAPS "; "
"audio/mpeg, "
"mpegversion = (int) { 2, 4 }, "
COMMON_AUDIO_CAPS "; "
"audio/x-ac3, "
COMMON_AUDIO_CAPS "; "
"audio/x-vorbis, "
COMMON_AUDIO_CAPS "; "
"audio/x-flac, "
COMMON_AUDIO_CAPS "; "
"audio/x-speex, "
COMMON_AUDIO_CAPS "; "
"audio/x-raw-int, "
"width = (int) 8, "
"depth = (int) 8, "
"signed = (boolean) false, "
COMMON_AUDIO_CAPS ";"
"audio/x-raw-int, "
"width = (int) 16, "
"depth = (int) 16, "
"endianness = (int) { BIG_ENDIAN, LITTLE_ENDIAN }, "
"signed = (boolean) true, "
COMMON_AUDIO_CAPS ";"
"audio/x-raw-int, "
"width = (int) 24, "
"depth = (int) 24, "
"endianness = (int) { BIG_ENDIAN, LITTLE_ENDIAN }, "
"signed = (boolean) true, "
COMMON_AUDIO_CAPS ";"
"audio/x-raw-int, "
"width = (int) 32, "
"depth = (int) 32, "
"endianness = (int) { BIG_ENDIAN, LITTLE_ENDIAN }, "
"signed = (boolean) true, "
COMMON_AUDIO_CAPS ";"
"audio/x-raw-float, "
"width = (int) [ 32, 64 ], "
"endianness = (int) LITTLE_ENDIAN, "
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)
);
static GstStaticPadTemplate subtitlesink_templ =
GST_STATIC_PAD_TEMPLATE ("subtitle_%d",
GST_PAD_SINK,
GST_PAD_REQUEST,
GST_STATIC_CAPS_ANY);
static GArray *used_uids;
G_LOCK_DEFINE_STATIC (used_uids);
static void gst_matroska_mux_add_interfaces (GType type);
GST_BOILERPLATE_FULL (GstMatroskaMux, gst_matroska_mux, GstElement,
GST_TYPE_ELEMENT, gst_matroska_mux_add_interfaces);
/* Matroska muxer destructor */
static void gst_matroska_mux_finalize (GObject * object);
/* Pads collected callback */
static GstFlowReturn
gst_matroska_mux_collected (GstCollectPads * pads, gpointer user_data);
/* pad functions */
static gboolean gst_matroska_mux_handle_src_event (GstPad * pad,
GstEvent * event);
static GstPad *gst_matroska_mux_request_new_pad (GstElement * element,
GstPadTemplate * templ, const gchar * name);
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 ();
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_add_interfaces (GType type)
{
static const GInterfaceInfo tag_setter_info = { NULL, NULL, NULL };
g_type_add_interface_static (type, GST_TYPE_TAG_SETTER, &tag_setter_info);
}
static void
gst_matroska_mux_base_init (gpointer g_class)
{
}
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_pad_template (gstelement_class,
gst_static_pad_template_get (&videosink_templ));
gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&audiosink_templ));
gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&subtitlesink_templ));
gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&src_templ));
gst_element_class_set_details_simple (gstelement_class, "Matroska muxer",
"Codec/Muxer",
"Muxes video/audio/subtitle streams into a matroska stream",
"GStreamer maintainers <gstreamer-devel@lists.sourceforge.net>");
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, ARG_WRITING_APP,
g_param_spec_string ("writing-app", "Writing application.",
"The name the application that creates the matroska file.",
NULL, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_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_object_class_install_property (gobject_class, ARG_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_object_class_install_property (gobject_class, ARG_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));
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);
}
/**
* gst_matroska_mux_init:
* @mux: #GstMatroskaMux that should be initialized.
* @g_class: Class of the muxer.
*
* Matroska muxer constructor.
*/
static void
gst_matroska_mux_init (GstMatroskaMux * mux, GstMatroskaMuxClass * 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);
mux->collect = gst_collect_pads_new ();
gst_collect_pads_set_function (mux->collect,
(GstCollectPadsFunction) GST_DEBUG_FUNCPTR (gst_matroska_mux_collected),
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->streamable = DEFAULT_STREAMABLE;
/* 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;
/* 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_object_unref (mux->collect);
gst_object_unref (mux->ebml_write);
if (mux->writing_app)
g_free (mux->writing_app);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
/**
* gst_matroska_mux_create_uid:
*
* Generate new unused track UID.
*
* Returns: New track UID.
*/
static guint64
gst_matroska_mux_create_uid (void)
{
guint64 uid = 0;
G_LOCK (used_uids);
if (!used_uids)
used_uids = g_array_sized_new (FALSE, FALSE, sizeof (guint64), 10);
while (!uid) {
guint i;
uid = (((guint64) g_random_int ()) << 32) | g_random_int ();
for (i = 0; i < used_uids->len; i++) {
if (g_array_index (used_uids, guint64, i) == uid) {
uid = 0;
break;
}
}
g_array_append_val (used_uids, uid);
}
G_UNLOCK (used_uids);
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;
}
/* free cached buffer */
if (collect_pad->buffer != NULL) {
gst_buffer_unref (collect_pad->buffer);
collect_pad->buffer = 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 ();
break;
}
context->type = type;
context->name = name;
/* TODO: check default values for the context */
context->flags = GST_MATROSKA_TRACK_ENABLED | GST_MATROSKA_TRACK_DEFAULT;
collect_pad->track = context;
collect_pad->buffer = NULL;
collect_pad->duration = 0;
collect_pad->start_ts = GST_CLOCK_TIME_NONE;
collect_pad->end_ts = GST_CLOCK_TIME_NONE;
}
}
/**
* gst_matroska_pad_free:
* @collect_pad: the #GstMatroskaPad
*
* Release resources of a matroska collect pad.
*/
static void
gst_matroska_pad_free (GstMatroskaPad * collect_pad)
{
gst_matroska_pad_reset (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->time_scale = GST_MSECOND;
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));
}
/**
* 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, 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, event);
}
/**
* 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 (GstPad * pad, GstEvent * event)
{
GstMatroskaTrackContext *context;
GstMatroskaPad *collect_pad;
GstMatroskaMux *mux;
GstTagList *list;
gboolean ret = TRUE;
mux = GST_MATROSKA_MUX (gst_pad_get_parent (pad));
/* FIXME: aren't we either leaking events here or doing a wrong unref? */
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_TAG:{
gchar *lang = NULL;
GST_DEBUG_OBJECT (mux, "received tag event");
gst_event_parse_tag (event, &list);
collect_pad = (GstMatroskaPad *) gst_pad_get_element_private (pad);
g_assert (collect_pad);
context = collect_pad->track;
g_assert (context);
/* 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);
context->language = g_strdup (lang_code);
} else {
GST_WARNING_OBJECT (pad, "Did not get language code for '%s'", lang);
}
g_free (lang);
}
gst_tag_setter_merge_tags (GST_TAG_SETTER (mux), list,
gst_tag_setter_get_tag_merge_mode (GST_TAG_SETTER (mux)));
break;
}
case GST_EVENT_NEWSEGMENT:
/* We don't support NEWSEGMENT events */
ret = FALSE;
gst_event_unref (event);
break;
default:
break;
}
/* now GstCollectPads can take care of the rest, e.g. EOS */
if (ret)
ret = mux->collect_event (pad, event);
gst_object_unref (mux);
return ret;
}
/**
* 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 GValue *value = NULL;
const GstBuffer *codec_buf = NULL;
gint width, height, pixel_width, pixel_height;
gint fps_d, fps_n;
gboolean interlaced = FALSE;
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);
if (gst_structure_get_boolean (structure, "interlaced", &interlaced)
&& interlaced)
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_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;
}
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 = gst_value_get_buffer (value);
/* find type */
if (!strcmp (mimetype, "video/x-raw-yuv")) {
context->codec_id = g_strdup (GST_MATROSKA_CODEC_ID_VIDEO_UNCOMPRESSED);
gst_structure_get_fourcc (structure, "format", &videocontext->fourcc);
} else if (!strcmp (mimetype, "image/jpeg")) {
context->codec_id = g_strdup (GST_MATROSKA_CODEC_ID_VIDEO_MJPEG);
} else if (!strcmp (mimetype, "video/x-xvid") /* MS/VfW compatibility cases */
||!strcmp (mimetype, "video/x-huffyuv")
|| !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")) {
gst_riff_strf_vids *bih;
gint size = sizeof (gst_riff_strf_vids);
guint32 fourcc = 0;
if (!strcmp (mimetype, "video/x-xvid"))
fourcc = GST_MAKE_FOURCC ('X', 'V', 'I', 'D');
else 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;
guint32 format;
if (gst_structure_get_fourcc (structure, "format", &format)) {
fourcc = format;
} 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');
}
}
}
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_SIZE (codec_buf);
bih = g_realloc (bih, size);
GST_WRITE_UINT32_LE (&bih->size, size);
memcpy ((guint8 *) bih + sizeof (gst_riff_strf_vids),
GST_BUFFER_DATA (codec_buf), GST_BUFFER_SIZE (codec_buf));
}
context->codec_id = g_strdup (GST_MATROSKA_CODEC_ID_VIDEO_VFW_FOURCC);
context->codec_priv = (gpointer) bih;
context->codec_priv_size = size;
} else if (!strcmp (mimetype, "video/x-h264")) {
context->codec_id = g_strdup (GST_MATROSKA_CODEC_ID_VIDEO_MPEG4_AVC);
if (context->codec_priv != NULL) {
g_free (context->codec_priv);
context->codec_priv = NULL;
context->codec_priv_size = 0;
}
/* Create avcC header */
if (codec_buf != NULL) {
context->codec_priv_size = GST_BUFFER_SIZE (codec_buf);
context->codec_priv = g_malloc0 (context->codec_priv_size);
memcpy (context->codec_priv, GST_BUFFER_DATA (codec_buf),
context->codec_priv_size);
}
} else if (!strcmp (mimetype, "video/x-theora")) {
const GValue *streamheader;
context->codec_id = g_strdup (GST_MATROSKA_CODEC_ID_VIDEO_THEORA);
if (context->codec_priv != NULL) {
g_free (context->codec_priv);
context->codec_priv = NULL;
context->codec_priv_size = 0;
}
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")) {
context->codec_id = g_strdup (GST_MATROSKA_CODEC_ID_VIDEO_DIRAC);
} else if (!strcmp (mimetype, "video/x-vp8")) {
context->codec_id = g_strdup (GST_MATROSKA_CODEC_ID_VIDEO_VP8);
} else if (!strcmp (mimetype, "video/mpeg")) {
gint mpegversion;
gst_structure_get_int (structure, "mpegversion", &mpegversion);
switch (mpegversion) {
case 1:
context->codec_id = g_strdup (GST_MATROSKA_CODEC_ID_VIDEO_MPEG1);
break;
case 2:
context->codec_id = g_strdup (GST_MATROSKA_CODEC_ID_VIDEO_MPEG2);
break;
case 4:
context->codec_id = g_strdup (GST_MATROSKA_CODEC_ID_VIDEO_MPEG4_ASP);
break;
default:
goto refuse_caps;
}
/* global headers may be in codec data */
if (codec_buf != NULL) {
context->codec_priv_size = GST_BUFFER_SIZE (codec_buf);
context->codec_priv = g_malloc0 (context->codec_priv_size);
memcpy (context->codec_priv, GST_BUFFER_DATA (codec_buf),
context->codec_priv_size);
}
} else if (!strcmp (mimetype, "video/x-msmpeg")) {
msmpeg43:
/* can only make it here if preceding case verified it was version 3 */
context->codec_id = g_strdup (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:
context->codec_id = g_strdup (GST_MATROSKA_CODEC_ID_VIDEO_REALVIDEO1);
break;
case 2:
context->codec_id = g_strdup (GST_MATROSKA_CODEC_ID_VIDEO_REALVIDEO2);
break;
case 3:
context->codec_id = g_strdup (GST_MATROSKA_CODEC_ID_VIDEO_REALVIDEO3);
break;
case 4:
context->codec_id = g_strdup (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_SIZE (codec_data_buf);
priv_data = g_malloc0 (priv_data_size);
memcpy (priv_data, GST_BUFFER_DATA (codec_data_buf), priv_data_size);
context->codec_priv = priv_data;
context->codec_priv_size = priv_data_size;
}
}
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_SIZE (buf[i]) / 0xff + 1;
}
}
for (i = 0; i < bufarr->len; ++i) {
priv_data_size += GST_BUFFER_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_SIZE (buf[bufi]) / 0xff; ++i) {
priv_data[offset++] = 0xff;
}
priv_data[offset++] = GST_BUFFER_SIZE (buf[bufi]) % 0xff;
}
}
for (i = 0; i < bufarr->len; ++i) {
memcpy (priv_data + offset, GST_BUFFER_DATA (buf[i]),
GST_BUFFER_SIZE (buf[i]));
offset += GST_BUFFER_SIZE (buf[i]);
}
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_SIZE (buf0) < 1 + 6 + 4) {
GST_WARNING ("First vorbis header too small, ignoring");
} else {
if (memcmp (GST_BUFFER_DATA (buf0) + 1, "vorbis", 6) == 0) {
GstMatroskaTrackAudioContext *audiocontext;
guint8 *hdr;
hdr = GST_BUFFER_DATA (buf0) + 1 + 6 + 4;
audiocontext = (GstMatroskaTrackAudioContext *) context;
audiocontext->channels = GST_READ_UINT8 (hdr);
audiocontext->samplerate = GST_READ_UINT32_LE (hdr + 1);
}
}
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_SIZE (buf0) < 1 + 6 + 26) {
GST_WARNING ("First theora header too small, ignoring");
} else if (memcmp (GST_BUFFER_DATA (buf0), "\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;
guint8 *hdr;
hdr = GST_BUFFER_DATA (buf0) + 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_num > 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;
}
hdr += 3 + 3;
}
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_SIZE (buf0) < 64) { /* Kate ID header is 64 bytes */
GST_WARNING ("First kate header too small, ignoring");
} else if (memcmp (GST_BUFFER_DATA (buf0), "\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_SIZE (buffer) < 9 + 4 + 4 + 34
|| memcmp (GST_BUFFER_DATA (buffer) + 1, "FLAC", 4) != 0
|| memcmp (GST_BUFFER_DATA (buffer) + 9, "fLaC", 4) != 0) {
GST_WARNING ("Invalid streamheader for FLAC");
return FALSE;
}
context->codec_priv = g_malloc (GST_BUFFER_SIZE (buffer) - 9);
context->codec_priv_size = GST_BUFFER_SIZE (buffer) - 9;
memcpy (context->codec_priv, GST_BUFFER_DATA (buffer) + 9,
GST_BUFFER_SIZE (buffer) - 9);
for (i = 1; i < bufarr->len; i++) {
bufval = &g_array_index (bufarr, GValue, i);
if (G_VALUE_TYPE (bufval) != GST_TYPE_BUFFER) {
g_free (context->codec_priv);
context->codec_priv = NULL;
context->codec_priv_size = 0;
GST_WARNING ("streamheaders array does not contain GstBuffers");
return FALSE;
}
buffer = g_value_peek_pointer (bufval);
context->codec_priv =
g_realloc (context->codec_priv,
context->codec_priv_size + GST_BUFFER_SIZE (buffer));
memcpy ((guint8 *) context->codec_priv + context->codec_priv_size,
GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer));
context->codec_priv_size =
context->codec_priv_size + GST_BUFFER_SIZE (buffer);
}
return TRUE;
}
static gboolean
speex_streamheader_to_codecdata (const GValue * streamheader,
GstMatroskaTrackContext * context)
{
GArray *bufarr;
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);
if (GST_BUFFER_SIZE (buffer) < 80
|| memcmp (GST_BUFFER_DATA (buffer), "Speex ", 8) != 0) {
GST_WARNING ("Invalid streamheader for Speex");
return FALSE;
}
context->codec_priv = g_malloc (GST_BUFFER_SIZE (buffer));
context->codec_priv_size = GST_BUFFER_SIZE (buffer);
memcpy (context->codec_priv, GST_BUFFER_DATA (buffer),
GST_BUFFER_SIZE (buffer));
bufval = &g_array_index (bufarr, GValue, 1);
if (G_VALUE_TYPE (bufval) != GST_TYPE_BUFFER) {
g_free (context->codec_priv);
context->codec_priv = NULL;
context->codec_priv_size = 0;
GST_WARNING ("streamheaders array does not contain GstBuffers");
return FALSE;
}
buffer = g_value_peek_pointer (bufval);
context->codec_priv =
g_realloc (context->codec_priv,
context->codec_priv_size + GST_BUFFER_SIZE (buffer));
memcpy ((guint8 *) context->codec_priv + context->codec_priv_size,
GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer));
context->codec_priv_size =
context->codec_priv_size + GST_BUFFER_SIZE (buffer);
return TRUE;
}
static const gchar *
aac_codec_data_to_codec_id (const GstBuffer * buf)
{
const gchar *result;
gint profile;
/* default to MAIN */
profile = 1;
if (GST_BUFFER_SIZE (buf) >= 2) {
profile = GST_READ_UINT8 (GST_BUFFER_DATA (buf));
profile >>= 3;
}
switch (profile) {
case 1:
result = "MAIN";
break;
case 2:
result = "LC";
break;
case 3:
result = "SSR";
break;
case 4:
result = "LTP";
break;
default:
GST_WARNING ("unknown AAC profile, defaulting to MAIN");
result = "MAIN";
break;
}
return result;
}
/**
* 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;
const 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:
context->codec_id = g_strdup (GST_MATROSKA_CODEC_ID_AUDIO_MPEG1_L1);
break;
case 2:
context->codec_id = g_strdup (GST_MATROSKA_CODEC_ID_AUDIO_MPEG1_L2);
break;
case 3:
context->codec_id = g_strdup (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) {
if (mpegversion == 2)
context->codec_id =
g_strdup_printf (GST_MATROSKA_CODEC_ID_AUDIO_AAC_MPEG2 "%s",
aac_codec_data_to_codec_id (buf));
else if (mpegversion == 4)
context->codec_id =
g_strdup_printf (GST_MATROSKA_CODEC_ID_AUDIO_AAC_MPEG4 "%s",
aac_codec_data_to_codec_id (buf));
else
g_assert_not_reached ();
} 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-int")) {
gint width, depth;
gint endianness = G_LITTLE_ENDIAN;
gboolean signedness = TRUE;
if (!gst_structure_get_int (structure, "width", &width) ||
!gst_structure_get_int (structure, "depth", &depth) ||
!gst_structure_get_boolean (structure, "signed", &signedness)) {
GST_DEBUG_OBJECT (mux, "broken caps, width/depth/signed field missing");
goto refuse_caps;
}
if (depth > 8 &&
!gst_structure_get_int (structure, "endianness", &endianness)) {
GST_DEBUG_OBJECT (mux, "broken caps, no endianness specified");
goto refuse_caps;
}
if (width != depth) {
GST_DEBUG_OBJECT (mux, "width must be same as depth!");
goto refuse_caps;
}
/* FIXME: where is this spec'ed out? (tpm) */
if ((width == 8 && signedness) || (width >= 16 && !signedness)) {
GST_DEBUG_OBJECT (mux, "8-bit PCM must be unsigned, 16-bit PCM signed");
goto refuse_caps;
}
audiocontext->bitdepth = depth;
if (endianness == G_BIG_ENDIAN)
context->codec_id = g_strdup (GST_MATROSKA_CODEC_ID_AUDIO_PCM_INT_BE);
else
context->codec_id = g_strdup (GST_MATROSKA_CODEC_ID_AUDIO_PCM_INT_LE);
} else if (!strcmp (mimetype, "audio/x-raw-float")) {
gint width;
if (!gst_structure_get_int (structure, "width", &width)) {
GST_DEBUG_OBJECT (mux, "broken caps, width field missing");
goto refuse_caps;
}
audiocontext->bitdepth = width;
context->codec_id = g_strdup (GST_MATROSKA_CODEC_ID_AUDIO_PCM_FLOAT);
} else if (!strcmp (mimetype, "audio/x-vorbis")) {
const GValue *streamheader;
context->codec_id = g_strdup (GST_MATROSKA_CODEC_ID_AUDIO_VORBIS);
if (context->codec_priv != NULL) {
g_free (context->codec_priv);
context->codec_priv = NULL;
context->codec_priv_size = 0;
}
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;
context->codec_id = g_strdup (GST_MATROSKA_CODEC_ID_AUDIO_FLAC);
if (context->codec_priv != NULL) {
g_free (context->codec_priv);
context->codec_priv = NULL;
context->codec_priv_size = 0;
}
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;
context->codec_id = g_strdup (GST_MATROSKA_CODEC_ID_AUDIO_SPEEX);
if (context->codec_priv != NULL) {
g_free (context->codec_priv);
context->codec_priv = NULL;
context->codec_priv_size = 0;
}
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-ac3")) {
context->codec_id = g_strdup (GST_MATROSKA_CODEC_ID_AUDIO_AC3);
} 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;
context->codec_id = g_strdup (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:
context->codec_id = g_strdup (GST_MATROSKA_CODEC_ID_AUDIO_REAL_14_4);
break;
case 2:
context->codec_id = g_strdup (GST_MATROSKA_CODEC_ID_AUDIO_REAL_28_8);
break;
case 8:
context->codec_id = g_strdup (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_SIZE (codec_data_buf);
priv_data = g_malloc0 (priv_data_size);
memcpy (priv_data, GST_BUFFER_DATA (codec_data_buf), priv_data_size);
context->codec_priv = priv_data;
context->codec_priv_size = priv_data_size;
}
} else if (!strcmp (mimetype, "audio/x-wma")) {
guint8 *codec_priv;
guint codec_priv_size;
guint16 format;
gint block_align;
gint bitrate;
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)
|| samplerate == 0 || channels == 0) {
GST_WARNING_OBJECT (mux, "Missing wmaversion/block_align/bitrate/"
"channels/rate 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;
codec_priv_size = WAVEFORMATEX_SIZE;
if (buf)
codec_priv_size += GST_BUFFER_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_SIZE (buf));
else
GST_WRITE_UINT16_LE (codec_priv + 16, 0);
/* process codec private/initialization data, if any */
if (buf) {
memcpy ((guint8 *) codec_priv + WAVEFORMATEX_SIZE,
GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
}
context->codec_id = g_strdup (GST_MATROSKA_CODEC_ID_AUDIO_ACM);
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;
}
}
/**
* 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)
{
/* FIXME:
* Consider this as boilerplate code for now. There is
* no single subtitle creation element in GStreamer,
* neither do I know how subtitling works at all. */
/* 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;
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;
/* TODO: - other format than Kate */
if (!strcmp (mimetype, "subtitle/x-kate")) {
const GValue *streamheader;
context->codec_id = g_strdup (GST_MATROSKA_CODEC_ID_SUBTITLE_KATE);
if (context->codec_priv != NULL) {
g_free (context->codec_priv);
context->codec_priv = NULL;
context->codec_priv_size = 0;
}
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"));
return FALSE;
}
return TRUE;
}
return FALSE;
}
/**
* 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 * pad_name)
{
GstElementClass *klass = GST_ELEMENT_GET_CLASS (element);
GstMatroskaMux *mux = GST_MATROSKA_MUX (element);
GstMatroskaPad *collect_pad;
GstPad *newpad = NULL;
gchar *name = NULL;
GstPadSetCapsFunction setcapsfunc = NULL;
GstMatroskaTrackContext *context = NULL;
if (templ == gst_element_class_get_pad_template (klass, "audio_%d")) {
name = g_strdup_printf ("audio_%d", mux->num_a_streams++);
setcapsfunc = 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_%d")) {
name = g_strdup_printf ("video_%d", mux->num_v_streams++);
setcapsfunc = 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_%d")) {
name = g_strdup_printf ("subtitle_%d", mux->num_t_streams++);
setcapsfunc = 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");
} else {
GST_WARNING_OBJECT (mux, "This is not our template!");
return NULL;
}
newpad = gst_pad_new_from_template (templ, name);
g_free (name);
collect_pad = (GstMatroskaPad *)
gst_collect_pads_add_pad_full (mux->collect, newpad,
sizeof (GstMatroskaPad),
(GstCollectDataDestroyNotify) gst_matroska_pad_free);
collect_pad->track = context;
gst_matroska_pad_reset (collect_pad, FALSE);
/* FIXME: hacked way to override/extend the event function of
* GstCollectPads; because it sets its own event function giving the
* element no access to events.
* TODO GstCollectPads should really give its 'users' a clean chance to
* properly handle events that are not meant for collectpads itself.
* Perhaps a callback or so, though rejected (?) in #340060.
* This would allow (clean) transcoding of info from demuxer/streams
* to another muxer */
mux->collect_event = (GstPadEventFunction) GST_PAD_EVENTFUNC (newpad);
gst_pad_set_event_function (newpad,
GST_DEBUG_FUNCPTR (gst_matroska_mux_handle_sink_event));
gst_pad_set_setcaps_function (newpad, setcapsfunc);
gst_pad_set_active (newpad, TRUE);
gst_element_add_pad (element, newpad);
mux->num_streams++;
return newpad;
}
/**
* 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) {
GstClockTime min_dur; /* observed minimum duration */
if (GST_CLOCK_TIME_IS_VALID (collect_pad->start_ts) &&
GST_CLOCK_TIME_IS_VALID (collect_pad->end_ts)) {
min_dur = GST_CLOCK_DIFF (collect_pad->start_ts, collect_pad->end_ts);
if (collect_pad->duration < min_dur)
collect_pad->duration = min_dur;
}
if (GST_CLOCK_TIME_IS_VALID (collect_pad->duration) &&
mux->duration < collect_pad->duration)
mux->duration = collect_pad->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,
gst_matroska_mux_create_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);
}
/* 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);
}
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;
}
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);
/* 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);
}
/**
* 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_CUES,
GST_MATROSKA_ID_TAGS,
0
};
guint64 master, child;
GSList *collected;
int i;
guint tracknum = 1;
GstClockTime duration = 0;
guint32 segment_uid[4];
GTimeVal time = { 0, 0 };
if (!strcmp (mux->doctype, GST_MATROSKA_DOCTYPE_WEBM)) {
ebml->caps = gst_caps_from_string ("video/webm");
} else {
ebml->caps = gst_caps_from_string ("video/x-matroska");
}
/* 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->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);
}
/* segment info */
mux->info_pos = ebml->pos;
master = gst_ebml_write_master_start (ebml, GST_MATROSKA_ID_SEGMENTINFO);
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->streamable) {
for (collected = mux->collect->data; collected;
collected = g_slist_next (collected)) {
GstMatroskaPad *collect_pad;
GstFormat format = GST_FORMAT_TIME;
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_query_peer_duration (thepad, &format, &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 plugin 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;
GstPad *thepad;
collect_pad = (GstMatroskaPad *) collected->data;
thepad = collect_pad->collect.pad;
if (gst_pad_is_linked (thepad) && gst_pad_is_active (thepad) &&
collect_pad->track->codec_id != 0) {
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);
}
}
gst_ebml_write_master_finish (ebml, master);
/* lastly, flush the cache */
gst_ebml_write_flush_cache (ebml, FALSE);
}
static void
gst_matroska_mux_write_simple_tag (const GstTagList * list, const gchar * tag,
gpointer data)
{
/* TODO: more sensible tag mappings */
struct
{
const gchar *matroska_tagname;
const gchar *gstreamer_tagname;
}
tag_conv[] = {
{
GST_MATROSKA_TAG_ID_TITLE, GST_TAG_TITLE}, {
GST_MATROSKA_TAG_ID_AUTHOR, 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}
};
GstEbmlWrite *ebml = (GstEbmlWrite *) data;
guint i;
guint64 simpletag_master;
for (i = 0; i < G_N_ELEMENTS (tag_conv); i++) {
const gchar *tagname_gst = tag_conv[i].gstreamer_tagname;
const gchar *tagname_mkv = 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;
}
}
}
/**
* 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;
/* finish last cluster */
if (mux->cluster) {
gst_ebml_write_master_finish (ebml, mux->cluster);
}
/* cues */
if (mux->index != NULL && !mux->streamable) {
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);
}
/* tags */
tags = gst_tag_setter_get_tag_list (GST_TAG_SETTER (mux));
if (tags != NULL && !gst_tag_list_is_empty (tags) && !mux->streamable) {
guint64 master_tags, master_tag;
GST_DEBUG ("Writing 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);
gst_tag_list_foreach (tags, gst_matroska_mux_write_simple_tag, ebml);
gst_ebml_write_master_finish (ebml, master_tag);
gst_ebml_write_master_finish (ebml, master_tags);
}
/* update seekhead. We know that:
* - a seekhead contains 4 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. */
if (!mux->streamable) {
GST_DEBUG_OBJECT (mux, "not streamable");
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 (mux->index != NULL) {
gst_ebml_replace_uint (ebml, mux->seekhead_pos + 88,
mux->cues_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 (tags != NULL) {
gst_ebml_replace_uint (ebml, mux->seekhead_pos + 116,
mux->tags_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);
}
/* update duration */
/* first get the overall duration */
/* a released track may have left a duration in here */
duration = mux->duration;
for (collected = mux->collect->data; collected;
collected = g_slist_next (collected)) {
GstMatroskaPad *collect_pad;
GstClockTime min_duration; /* observed minimum duration */
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)) {
min_duration =
GST_CLOCK_DIFF (collect_pad->start_ts, collect_pad->end_ts);
if (collect_pad->duration < min_duration)
collect_pad->duration = min_duration;
GST_DEBUG_OBJECT (collect_pad,
"final track duration: %" GST_TIME_FORMAT,
GST_TIME_ARGS (collect_pad->duration));
}
if (GST_CLOCK_TIME_IS_VALID (collect_pad->duration) &&
duration < collect_pad->duration)
duration = collect_pad->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_best_pad:
* @mux: #GstMatroskaMux
* @popped: True if at least one buffer was popped from #GstCollectPads
*
* Find a pad with the oldest data
* (data from this pad should be written first).
*
* Returns: Selected pad.
*/
static GstMatroskaPad *
gst_matroska_mux_best_pad (GstMatroskaMux * mux, gboolean * popped)
{
GSList *collected;
GstMatroskaPad *best = NULL;
*popped = FALSE;
for (collected = mux->collect->data; collected;
collected = g_slist_next (collected)) {
GstMatroskaPad *collect_pad;
collect_pad = (GstMatroskaPad *) collected->data;
/* fetch a new buffer if needed */
if (collect_pad->buffer == NULL) {
collect_pad->buffer = gst_collect_pads_pop (mux->collect,
(GstCollectData *) collect_pad);
if (collect_pad->buffer != NULL)
*popped = TRUE;
}
/* if we have a buffer check if it is better then the current best one */
if (collect_pad->buffer != NULL) {
if (best == NULL || !GST_BUFFER_TIMESTAMP_IS_VALID (collect_pad->buffer)
|| (GST_BUFFER_TIMESTAMP_IS_VALID (best->buffer)
&& GST_BUFFER_TIMESTAMP (collect_pad->buffer) <
GST_BUFFER_TIMESTAMP (best->buffer))) {
best = collect_pad;
}
}
}
return best;
}
/**
* 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;
hdr = gst_buffer_new_and_alloc (4);
/* track num - FIXME: what if num >= 0x80 (unlikely)? */
GST_BUFFER_DATA (hdr)[0] = track->num | 0x80;
/* time relative to clustertime */
GST_WRITE_UINT16_BE (GST_BUFFER_DATA (hdr) + 1, relative_timestamp);
/* flags */
GST_BUFFER_DATA (hdr)[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;
const guint8 *data = GST_BUFFER_DATA (buf);
guint size = GST_BUFFER_SIZE (buf);
guint8 parse_code;
guint32 next_parse_offset;
GstBuffer *ret = NULL;
gboolean is_muxing_unit = FALSE;
if (GST_BUFFER_SIZE (buf) < 13) {
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_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))
break;
data += next_parse_offset;
size -= next_parse_offset;
}
if (ctx->dirac_unit)
ctx->dirac_unit = gst_buffer_join (ctx->dirac_unit, gst_buffer_ref (buf));
else
ctx->dirac_unit = gst_buffer_ref (buf);
if (is_muxing_unit) {
ret = gst_buffer_make_metadata_writable (ctx->dirac_unit);
ctx->dirac_unit = NULL;
gst_buffer_copy_metadata (ret, buf,
GST_BUFFER_COPY_FLAGS | GST_BUFFER_COPY_TIMESTAMPS |
GST_BUFFER_COPY_CAPS);
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);
if (!strcmp (mux->doctype, GST_MATROSKA_DOCTYPE_WEBM)) {
caps = gst_caps_from_string ("video/webm");
} else {
caps = gst_caps_from_string ("video/x-matroska");
}
s = gst_caps_get_structure (caps, 0);
g_value_init (&streamheader, GST_TYPE_ARRAY);
g_value_init (&bufval, GST_TYPE_BUFFER);
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_unref (ebml->caps);
ebml->caps = 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)
{
GstEbmlWrite *ebml = mux->ebml_write;
GstBuffer *buf, *hdr;
guint64 blockgroup;
gboolean write_duration;
gint16 relative_timestamp;
gint64 relative_timestamp64;
guint64 block_duration;
gboolean is_video_keyframe = FALSE;
/* write data */
buf = collect_pad->buffer;
collect_pad->buffer = NULL;
/* 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 (collect_pad->track->codec_id != NULL &&
strcmp (collect_pad->track->codec_id,
GST_MATROSKA_CODEC_ID_VIDEO_DIRAC) == 0) {
buf = gst_matroska_mux_handle_dirac_packet (mux, collect_pad, buf);
if (!buf)
return GST_FLOW_OK;
}
/* 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_BUFFER_TIMESTAMP_IS_VALID (buf)) {
GST_WARNING_OBJECT (collect_pad->collect.pad,
"Invalid buffer timestamp; dropping buffer");
gst_buffer_unref (buf);
return GST_FLOW_OK;
}
/* set the timestamp for outgoing buffers */
ebml->timestamp = GST_BUFFER_TIMESTAMP (buf);
if (collect_pad->track->type == GST_MATROSKA_TRACK_TYPE_VIDEO &&
!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 (GST_BUFFER_TIMESTAMP (buf)));
is_video_keyframe = TRUE;
}
if (mux->cluster) {
/* start a new cluster at every keyframe or when we may be reaching the
* limit of the relative timestamp */
if (mux->cluster_time +
mux->max_cluster_duration < GST_BUFFER_TIMESTAMP (buf)
|| is_video_keyframe) {
if (!mux->streamable)
gst_ebml_write_master_finish (ebml, mux->cluster);
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 (GST_BUFFER_TIMESTAMP (buf), 1,
mux->time_scale));
GST_WARNING_OBJECT (mux, "cluster timestamp %" G_GUINT64_FORMAT,
gst_util_uint64_scale (GST_BUFFER_TIMESTAMP (buf), 1,
mux->time_scale));
gst_ebml_write_flush_cache (ebml, TRUE);
mux->cluster_time = GST_BUFFER_TIMESTAMP (buf);
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 (GST_BUFFER_TIMESTAMP (buf), 1, mux->time_scale));
gst_ebml_write_flush_cache (ebml, TRUE);
mux->cluster_time = GST_BUFFER_TIMESTAMP (buf);
}
/* update duration of this track */
if (GST_BUFFER_DURATION_IS_VALID (buf))
collect_pad->duration += GST_BUFFER_DURATION (buf);
/* 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 (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, GST_BUFFER_TIMESTAMP (buf))
>= 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 = GST_BUFFER_TIMESTAMP (buf);
idx->track = collect_pad->track->num;
}
}
/* Check if the duration differs from the default duration. */
write_duration = FALSE;
block_duration = GST_BUFFER_DURATION (buf);
if (GST_BUFFER_DURATION_IS_VALID (buf)) {
if (block_duration != collect_pad->track->default_duration) {
write_duration = TRUE;
}
}
/* write the block, for doctype v2 use SimpleBlock if possible
* one slice (*breath*).
* FIXME: Need to do correct lacing! */
relative_timestamp64 = GST_BUFFER_TIMESTAMP (buf) - mux->cluster_time;
if (relative_timestamp64 >= 0) {
/* round the timestamp */
relative_timestamp64 += gst_util_uint64_scale (mux->time_scale, 1, 2);
} else {
/* 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);
if (mux->doctype_version > 1 && !write_duration) {
int flags =
GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT) ? 0 : 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_SIZE (buf) + GST_BUFFER_SIZE (hdr));
gst_ebml_write_buffer (ebml, hdr);
gst_ebml_write_flush_cache (ebml, FALSE);
gst_ebml_write_buffer (ebml, buf);
return gst_ebml_last_write_result (ebml);
} else {
gst_ebml_write_set_cache (ebml, GST_BUFFER_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, 0);
if (write_duration) {
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_BLOCKDURATION,
gst_util_uint64_scale (block_duration, 1, mux->time_scale));
}
gst_ebml_write_buffer_header (ebml, GST_MATROSKA_ID_BLOCK,
GST_BUFFER_SIZE (buf) + GST_BUFFER_SIZE (hdr));
gst_ebml_write_buffer (ebml, hdr);
gst_ebml_write_master_finish_full (ebml, blockgroup, GST_BUFFER_SIZE (buf));
gst_ebml_write_flush_cache (ebml, FALSE);
gst_ebml_write_buffer (ebml, buf);
return gst_ebml_last_write_result (ebml);
}
}
/**
* gst_matroska_mux_collected:
* @pads: #GstCollectPads
* @uuser_data: #GstMatroskaMux
*
* Collectpads callback.
*
* Returns: #GstFlowReturn
*/
static GstFlowReturn
gst_matroska_mux_collected (GstCollectPads * pads, gpointer user_data)
{
GstMatroskaMux *mux = GST_MATROSKA_MUX (user_data);
GstEbmlWrite *ebml = mux->ebml_write;
GstMatroskaPad *best;
gboolean popped;
GstFlowReturn ret;
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;
}
do {
/* which stream to write from? */
best = gst_matroska_mux_best_pad (mux, &popped);
/* if there is no best pad, we have reached EOS */
if (best == NULL) {
GST_DEBUG_OBJECT (mux, "No best pad finishing...");
gst_matroska_mux_finish (mux);
gst_pad_push_event (mux->srcpad, gst_event_new_eos ());
ret = GST_FLOW_UNEXPECTED;
break;
}
GST_DEBUG_OBJECT (best->collect.pad, "best pad - buffer ts %"
GST_TIME_FORMAT " dur %" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (best->buffer)),
GST_TIME_ARGS (GST_BUFFER_DURATION (best->buffer)));
/* 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_BUFFER_TIMESTAMP_IS_VALID (best->buffer)) {
GstClockTime start_ts = GST_BUFFER_TIMESTAMP (best->buffer);
GstClockTime end_ts = start_ts;
if (GST_BUFFER_DURATION_IS_VALID (best->buffer))
end_ts += GST_BUFFER_DURATION (best->buffer);
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);
} while (ret == GST_FLOW_OK && !popped);
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 ARG_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 ARG_DOCTYPE_VERSION:
mux->doctype_version = g_value_get_int (value);
break;
case ARG_MIN_INDEX_INTERVAL:
mux->min_index_interval = g_value_get_int64 (value);
break;
case ARG_STREAMABLE:
mux->streamable = g_value_get_boolean (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 ARG_WRITING_APP:
g_value_set_string (value, mux->writing_app);
break;
case ARG_DOCTYPE_VERSION:
g_value_set_int (value, mux->doctype_version);
break;
case ARG_MIN_INDEX_INTERVAL:
g_value_set_int64 (value, mux->min_index_interval);
break;
case ARG_STREAMABLE:
g_value_set_boolean (value, mux->streamable);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
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