gstreamer/gst/mpegpsmux/mpegpsmux.c
Wim Taymans 1119f6ee41 Merge branch 'master' into 0.11
Conflicts:
	ext/chromaprint/gstchromaprint.c
	ext/mpeg2enc/Makefile.am
	ext/voaacenc/gstvoaacenc.c
	gst/dvbsuboverlay/gstdvbsuboverlay.c
	gst/mpegtsdemux/mpegtsbase.c
	gst/sdp/gstsdpdemux.c
	gst/videoparsers/gsth264parse.c
	sys/d3dvideosink/d3dvideosink.c
	tests/examples/camerabin/gst-camera-perf.c
	tests/examples/camerabin/gst-camerabin-test.c
	tests/examples/camerabin2/gst-camerabin2-test.c
	tests/examples/mxf/mxfdemux-structure.c
	tests/examples/scaletempo/demo-main.c
2012-02-10 16:46:50 +01:00

804 lines
25 KiB
C

/* MPEG-PS muxer plugin for GStreamer
* Copyright 2008 Lin YANG <oxcsnicho@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Unless otherwise indicated, Source Code is licensed under MIT license.
* See further explanation attached in License Statement (distributed in the file
* LICENSE).
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is furnished to do
* so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include "mpegpsmux.h"
#include "mpegpsmux_aac.h"
#include "mpegpsmux_h264.h"
GST_DEBUG_CATEGORY (mpegpsmux_debug);
#define GST_CAT_DEFAULT mpegpsmux_debug
enum
{
PROP_AGGREGATE_GOPS = 1
};
#define DEFAULT_AGGREGATE_GOPS FALSE
static GstStaticPadTemplate mpegpsmux_sink_factory =
GST_STATIC_PAD_TEMPLATE ("sink_%u",
GST_PAD_SINK,
GST_PAD_REQUEST,
GST_STATIC_CAPS ("video/mpeg, "
"mpegversion = (int) { 1, 2, 4 }, "
"systemstream = (boolean) false; "
"video/x-dirac;"
"video/x-h264;"
"audio/mpeg, "
"mpegversion = (int) { 1, 2 };"
"audio/mpeg, "
"mpegversion = (int) 4, stream-format = (string) { raw, adts }; "
"audio/x-lpcm, "
"width = (int) { 16, 20, 24 }, "
"rate = (int) { 48000, 96000 }, "
"channels = (int) [ 1, 8 ], "
"dynamic_range = (int) [ 0, 255 ], "
"emphasis = (boolean) { FALSE, TRUE }, "
"mute = (boolean) { FALSE, TRUE }"));
static GstStaticPadTemplate mpegpsmux_src_factory =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/mpeg, "
"mpegversion = (int) 2, " "systemstream = (boolean) true")
);
static void gst_mpegpsmux_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_mpegpsmux_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void mpegpsmux_dispose (GObject * object);
static gboolean new_packet_cb (guint8 * data, guint len, void *user_data);
static void release_buffer_cb (guint8 * data, void *user_data);
static gboolean mpegpsdemux_prepare_srcpad (MpegPsMux * mux);
static GstFlowReturn mpegpsmux_collected (GstCollectPads2 * pads,
MpegPsMux * mux);
static GstPad *mpegpsmux_request_new_pad (GstElement * element,
GstPadTemplate * templ, const gchar * name);
static void mpegpsmux_release_pad (GstElement * element, GstPad * pad);
static GstStateChangeReturn mpegpsmux_change_state (GstElement * element,
GstStateChange transition);
GST_BOILERPLATE (MpegPsMux, mpegpsmux, GstElement, GST_TYPE_ELEMENT);
static void
mpegpsmux_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&mpegpsmux_sink_factory));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&mpegpsmux_src_factory));
gst_element_class_set_details_simple (element_class,
"MPEG Program Stream Muxer", "Codec/Muxer",
"Multiplexes media streams into an MPEG Program Stream",
"Lin YANG <oxcsnicho@gmail.com>");
}
static void
mpegpsmux_class_init (MpegPsMuxClass * klass)
{
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_mpegpsmux_set_property);
gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_mpegpsmux_get_property);
gobject_class->dispose = mpegpsmux_dispose;
gstelement_class->request_new_pad = mpegpsmux_request_new_pad;
gstelement_class->release_pad = mpegpsmux_release_pad;
gstelement_class->change_state = mpegpsmux_change_state;
g_object_class_install_property (gobject_class, PROP_AGGREGATE_GOPS,
g_param_spec_boolean ("aggregate-gops", "Aggregate GOPs",
"Whether to aggregate GOPs and push them out as buffer lists",
DEFAULT_AGGREGATE_GOPS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
}
static void
mpegpsmux_init (MpegPsMux * mux, MpegPsMuxClass * g_class)
{
mux->srcpad = gst_pad_new_from_static_template (&mpegpsmux_src_factory,
"src");
gst_pad_use_fixed_caps (mux->srcpad);
gst_element_add_pad (GST_ELEMENT (mux), mux->srcpad);
mux->collect = gst_collect_pads2_new ();
gst_collect_pads2_set_function (mux->collect,
(GstCollectPads2Function) GST_DEBUG_FUNCPTR (mpegpsmux_collected), mux);
mux->psmux = psmux_new ();
psmux_set_write_func (mux->psmux, new_packet_cb, mux);
mux->first = TRUE;
mux->last_flow_ret = GST_FLOW_OK;
mux->last_ts = 0; /* XXX: or -1? */
}
static void
mpegpsmux_dispose (GObject * object)
{
MpegPsMux *mux = GST_MPEG_PSMUX (object);
if (mux->collect) {
gst_object_unref (mux->collect);
mux->collect = NULL;
}
if (mux->psmux) {
psmux_free (mux->psmux);
mux->psmux = NULL;
}
if (mux->gop_list != NULL) {
gst_buffer_list_unref (mux->gop_list);
mux->gop_list = NULL;
}
GST_CALL_PARENT (G_OBJECT_CLASS, dispose, (object));
}
static void
gst_mpegpsmux_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
MpegPsMux *mux = GST_MPEG_PSMUX (object);
switch (prop_id) {
case PROP_AGGREGATE_GOPS:
mux->aggregate_gops = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_mpegpsmux_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
MpegPsMux *mux = GST_MPEG_PSMUX (object);
switch (prop_id) {
case PROP_AGGREGATE_GOPS:
g_value_set_boolean (value, mux->aggregate_gops);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
release_buffer_cb (guint8 * data, void *user_data)
{
/* release a given buffer. callback func */
GstBuffer *buf = (GstBuffer *) user_data;
gst_buffer_unref (buf);
}
static GstFlowReturn
mpegpsmux_create_stream (MpegPsMux * mux, MpegPsPadData * ps_data, GstPad * pad)
{
/* Create a steam. Fill in codec specific information */
GstFlowReturn ret = GST_FLOW_ERROR;
GstCaps *caps = gst_pad_get_negotiated_caps (pad);
GstStructure *s;
gboolean is_video = FALSE;
if (caps == NULL) {
GST_DEBUG_OBJECT (pad, "Sink pad caps were not set before pushing");
return GST_FLOW_NOT_NEGOTIATED;
}
s = gst_caps_get_structure (caps, 0);
g_return_val_if_fail (s != NULL, FALSE);
if (gst_structure_has_name (s, "video/x-dirac")) {
GST_DEBUG_OBJECT (pad, "Creating Dirac stream");
ps_data->stream = psmux_create_stream (mux->psmux, PSMUX_ST_VIDEO_DIRAC);
is_video = TRUE;
} else if (gst_structure_has_name (s, "audio/x-ac3")) {
GST_DEBUG_OBJECT (pad, "Creating AC3 stream");
ps_data->stream = psmux_create_stream (mux->psmux, PSMUX_ST_PS_AUDIO_AC3);
} else if (gst_structure_has_name (s, "audio/x-dts")) {
GST_DEBUG_OBJECT (pad, "Creating DTS stream");
ps_data->stream = psmux_create_stream (mux->psmux, PSMUX_ST_PS_AUDIO_DTS);
} else if (gst_structure_has_name (s, "audio/x-lpcm")) {
GST_DEBUG_OBJECT (pad, "Creating LPCM stream");
ps_data->stream = psmux_create_stream (mux->psmux, PSMUX_ST_PS_AUDIO_LPCM);
} else if (gst_structure_has_name (s, "video/x-h264")) {
const GValue *value;
GST_DEBUG_OBJECT (pad, "Creating H264 stream");
/* Codec data contains SPS/PPS which need to go in stream for valid ES */
value = gst_structure_get_value (s, "codec_data");
if (value) {
ps_data->codec_data = gst_buffer_ref (gst_value_get_buffer (value));
GST_DEBUG_OBJECT (pad, "we have additional codec data (%d bytes)",
GST_BUFFER_SIZE (ps_data->codec_data));
ps_data->prepare_func = mpegpsmux_prepare_h264;
} else {
ps_data->codec_data = NULL;
}
ps_data->stream = psmux_create_stream (mux->psmux, PSMUX_ST_VIDEO_H264);
is_video = TRUE;
} else if (gst_structure_has_name (s, "audio/mpeg")) {
gint mpegversion;
if (!gst_structure_get_int (s, "mpegversion", &mpegversion)) {
GST_ELEMENT_ERROR (pad, STREAM, FORMAT,
("Invalid data format presented"),
("Caps with type audio/mpeg did not have mpegversion"));
goto beach;
}
switch (mpegversion) {
case 1:
GST_DEBUG_OBJECT (pad, "Creating MPEG Audio, version 1 stream");
ps_data->stream =
psmux_create_stream (mux->psmux, PSMUX_ST_AUDIO_MPEG1);
break;
case 2:
GST_DEBUG_OBJECT (pad, "Creating MPEG Audio, version 2 stream");
ps_data->stream =
psmux_create_stream (mux->psmux, PSMUX_ST_AUDIO_MPEG2);
break;
case 4:
{
const GValue *value;
/* Codec data contains SPS/PPS which need to go in stream for valid ES */
GST_DEBUG_OBJECT (pad, "Creating MPEG Audio, version 4 stream");
value = gst_structure_get_value (s, "codec_data");
if (value) {
ps_data->codec_data = gst_buffer_ref (gst_value_get_buffer (value));
GST_DEBUG_OBJECT (pad, "we have additional codec data (%d bytes)",
GST_BUFFER_SIZE (ps_data->codec_data));
ps_data->prepare_func = mpegpsmux_prepare_aac;
} else {
ps_data->codec_data = NULL;
}
ps_data->stream = psmux_create_stream (mux->psmux, PSMUX_ST_AUDIO_AAC);
break;
}
default:
GST_WARNING_OBJECT (pad, "unsupported mpegversion %d", mpegversion);
goto beach;
}
} else if (gst_structure_has_name (s, "video/mpeg")) {
gint mpegversion;
if (!gst_structure_get_int (s, "mpegversion", &mpegversion)) {
GST_ELEMENT_ERROR (mux, STREAM, FORMAT,
("Invalid data format presented"),
("Caps with type video/mpeg did not have mpegversion"));
goto beach;
}
if (mpegversion == 1) {
GST_DEBUG_OBJECT (pad, "Creating MPEG Video, version 1 stream");
ps_data->stream = psmux_create_stream (mux->psmux, PSMUX_ST_VIDEO_MPEG1);
} else if (mpegversion == 2) {
GST_DEBUG_OBJECT (pad, "Creating MPEG Video, version 2 stream");
ps_data->stream = psmux_create_stream (mux->psmux, PSMUX_ST_VIDEO_MPEG2);
} else {
GST_DEBUG_OBJECT (pad, "Creating MPEG Video, version 4 stream");
ps_data->stream = psmux_create_stream (mux->psmux, PSMUX_ST_VIDEO_MPEG4);
}
is_video = TRUE;
}
if (ps_data->stream != NULL) {
ps_data->stream_id = ps_data->stream->stream_id;
ps_data->stream_id_ext = ps_data->stream->stream_id_ext;
GST_DEBUG_OBJECT (pad, "Stream created, stream_id=%04x, stream_id_ext=%04x",
ps_data->stream_id, ps_data->stream_id_ext);
gst_structure_get_int (s, "rate", &ps_data->stream->audio_sampling);
gst_structure_get_int (s, "channels", &ps_data->stream->audio_channels);
gst_structure_get_int (s, "bitrate", &ps_data->stream->audio_bitrate);
psmux_stream_set_buffer_release_func (ps_data->stream, release_buffer_cb);
ret = GST_FLOW_OK;
if (is_video && mux->video_stream_id == 0) {
mux->video_stream_id = ps_data->stream_id;
GST_INFO_OBJECT (mux, "video pad stream_id 0x%02x", mux->video_stream_id);
}
}
beach:
return ret;
}
static GstFlowReturn
mpegpsmux_create_streams (MpegPsMux * mux)
{
/* Create stream for each pad */
GstFlowReturn ret = GST_FLOW_OK;
GSList *walk = mux->collect->data;
/* Create the streams */
while (walk) {
GstCollectData2 *c_data = (GstCollectData2 *) walk->data;
MpegPsPadData *ps_data = (MpegPsPadData *) walk->data;
walk = g_slist_next (walk);
if (ps_data->stream == NULL) {
ret = mpegpsmux_create_stream (mux, ps_data, c_data->pad);
if (ret != GST_FLOW_OK)
goto no_stream;
}
}
return GST_FLOW_OK;
no_stream:
GST_ELEMENT_ERROR (mux, STREAM, MUX,
("Could not create handler for stream"), (NULL));
return ret;
}
static MpegPsPadData *
mpegpsmux_choose_best_stream (MpegPsMux * mux)
{
/* Choose from which stream to mux with */
MpegPsPadData *best = NULL;
GstCollectData2 *c_best = NULL;
GSList *walk;
for (walk = mux->collect->data; walk != NULL; walk = g_slist_next (walk)) {
GstCollectData2 *c_data = (GstCollectData2 *) walk->data;
MpegPsPadData *ps_data = (MpegPsPadData *) walk->data;
if (ps_data->eos == FALSE) {
if (ps_data->queued_buf == NULL) {
GstBuffer *buf;
ps_data->queued_buf = buf =
gst_collect_pads2_peek (mux->collect, c_data);
if (buf != NULL) {
if (ps_data->prepare_func) {
buf = ps_data->prepare_func (buf, ps_data, mux);
if (buf) { /* Take the prepared buffer instead */
gst_buffer_unref (ps_data->queued_buf);
ps_data->queued_buf = buf;
} else { /* If data preparation returned NULL, use unprepared one */
buf = ps_data->queued_buf;
}
}
if (GST_BUFFER_TIMESTAMP (buf) != GST_CLOCK_TIME_NONE) {
/* Ignore timestamps that go backward for now. FIXME: Handle all
* incoming PTS */
if (ps_data->last_ts == GST_CLOCK_TIME_NONE ||
ps_data->last_ts < GST_BUFFER_TIMESTAMP (buf)) {
ps_data->cur_ts = ps_data->last_ts =
gst_segment_to_running_time (&c_data->segment,
GST_FORMAT_TIME, GST_BUFFER_TIMESTAMP (buf));
} else {
GST_DEBUG_OBJECT (mux, "Ignoring PTS that has gone backward");
}
} else
ps_data->cur_ts = GST_CLOCK_TIME_NONE;
GST_DEBUG_OBJECT (mux, "Pulled buffer with ts %" GST_TIME_FORMAT
" (uncorrected ts %" GST_TIME_FORMAT " %" G_GUINT64_FORMAT
") for PID 0x%04x",
GST_TIME_ARGS (ps_data->cur_ts),
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)),
GST_BUFFER_TIMESTAMP (buf), ps_data->stream_id);
/* Choose a stream we've never seen a timestamp for to ensure
* we push enough buffers from it to reach a timestamp */
if (ps_data->last_ts == GST_CLOCK_TIME_NONE) {
best = ps_data;
c_best = c_data;
}
} else {
ps_data->eos = TRUE;
continue;
}
}
/* If we don't yet have a best pad, take this one, otherwise take
* whichever has the oldest timestamp */
if (best != NULL) {
if (ps_data->last_ts != GST_CLOCK_TIME_NONE &&
best->last_ts != GST_CLOCK_TIME_NONE &&
ps_data->last_ts < best->last_ts) {
best = ps_data;
c_best = c_data;
}
} else {
best = ps_data;
c_best = c_data;
}
}
}
if (c_best) {
gst_buffer_unref (gst_collect_pads2_pop (mux->collect, c_best));
}
return best;
}
static GstFlowReturn
mpegpsmux_push_gop_list (MpegPsMux * mux)
{
GstFlowReturn flow;
g_assert (mux->gop_list != NULL);
GST_DEBUG_OBJECT (mux, "Sending pending GOP of %u buffers",
gst_buffer_list_n_groups (mux->gop_list));
flow = gst_pad_push_list (mux->srcpad, mux->gop_list);
mux->gop_list = NULL;
return flow;
}
static GstFlowReturn
mpegpsmux_collected (GstCollectPads2 * pads, MpegPsMux * mux)
{
/* main muxing function */
GstFlowReturn ret = GST_FLOW_OK;
MpegPsPadData *best = NULL;
gboolean keyunit;
GST_DEBUG_OBJECT (mux, "Pads collected");
if (mux->first) { /* process block for the first mux */
/* iterate through the collect pads and add streams to @mux */
ret = mpegpsmux_create_streams (mux);
/* Assumption : all pads are already added at this time */
if (G_UNLIKELY (ret != GST_FLOW_OK))
return ret;
best = mpegpsmux_choose_best_stream (mux);
/* prepare the src pad (output), return if failed */
if (!mpegpsdemux_prepare_srcpad (mux)) {
GST_DEBUG_OBJECT (mux, "Failed to send new segment");
goto new_seg_fail;
}
mux->first = FALSE;
} else {
best = mpegpsmux_choose_best_stream (mux);
}
if (best != NULL) {
/* @*buf : the buffer to be processed */
GstBuffer *buf = best->queued_buf;
gint64 pts = -1;
g_return_val_if_fail (buf != NULL, GST_FLOW_ERROR);
GST_DEBUG_OBJECT (mux,
"Chose stream from pad %" GST_PTR_FORMAT " for output (PID: 0x%04x)",
best->collect.pad, best->stream_id);
/* set timestamp */
if (GST_CLOCK_TIME_IS_VALID (best->cur_ts)) {
pts = GSTTIME_TO_MPEGTIME (best->cur_ts); /* @pts: current timestamp */
GST_DEBUG_OBJECT (mux, "Buffer has TS %" GST_TIME_FORMAT " pts %"
G_GINT64_FORMAT, GST_TIME_ARGS (best->cur_ts), pts);
}
/* start of new GOP? */
keyunit = !GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
if (keyunit && best->stream_id == mux->video_stream_id
&& mux->gop_list != NULL) {
ret = mpegpsmux_push_gop_list (mux);
if (ret != GST_FLOW_OK)
goto done;
}
/* give the buffer to libpsmux for processing */
psmux_stream_add_data (best->stream, GST_BUFFER_DATA (buf),
GST_BUFFER_SIZE (buf), buf, pts, -1, keyunit);
best->queued_buf = NULL;
/* write the data from libpsmux to stream */
while (psmux_stream_bytes_in_buffer (best->stream) > 0) {
GST_LOG_OBJECT (mux, "Before @psmux_write_stream_packet");
if (!psmux_write_stream_packet (mux->psmux, best->stream)) {
GST_DEBUG_OBJECT (mux, "Failed to write data packet");
goto write_fail;
}
}
mux->last_ts = best->last_ts;
} else {
/* FIXME: Drain all remaining streams */
/* At EOS */
if (mux->gop_list != NULL)
mpegpsmux_push_gop_list (mux);
if (psmux_write_end_code (mux->psmux)) {
GST_WARNING_OBJECT (mux, "Writing MPEG PS Program end code failed.");
}
gst_pad_push_event (mux->srcpad, gst_event_new_eos ());
}
done:
return ret;
new_seg_fail:
return GST_FLOW_ERROR;
write_fail:
/* FIXME: Failed writing data for some reason. Should set appropriate error */
return mux->last_flow_ret;
}
static GstPad *
mpegpsmux_request_new_pad (GstElement * element,
GstPadTemplate * templ, const gchar * name)
{
MpegPsMux *mux = GST_MPEG_PSMUX (element);
GstPad *pad = NULL;
MpegPsPadData *pad_data = NULL;
pad = gst_pad_new_from_template (templ, name);
pad_data = (MpegPsPadData *) gst_collect_pads2_add_pad (mux->collect, pad,
sizeof (MpegPsPadData));
if (pad_data == NULL)
goto pad_failure;
pad_data->last_ts = GST_CLOCK_TIME_NONE;
pad_data->codec_data = NULL;
pad_data->prepare_func = NULL;
if (G_UNLIKELY (!gst_element_add_pad (element, pad)))
goto could_not_add;
return pad;
could_not_add:
GST_ELEMENT_ERROR (element, STREAM, FAILED,
("Internal data stream error."), ("Could not add pad to element"));
gst_collect_pads2_remove_pad (mux->collect, pad);
gst_object_unref (pad);
return NULL;
pad_failure:
GST_ELEMENT_ERROR (element, STREAM, FAILED,
("Internal data stream error."), ("Could not add pad to collectpads"));
gst_object_unref (pad);
return NULL;
}
static void
mpegpsmux_release_pad (GstElement * element, GstPad * pad)
{
/* unref pad data (and codec data) */
MpegPsMux *mux = GST_MPEG_PSMUX (element);
MpegPsPadData *pad_data = NULL;
GST_DEBUG_OBJECT (mux, "Pad %" GST_PTR_FORMAT " being released", pad);
/* Get the MpegPsPadData out of the pad */
GST_OBJECT_LOCK (pad);
pad_data = (MpegPsPadData *) gst_pad_get_element_private (pad);
if (G_LIKELY (pad_data)) {
/* Free codec data reference if any */
if (pad_data->codec_data) {
GST_DEBUG_OBJECT (element, "releasing codec_data reference");
gst_buffer_unref (pad_data->codec_data);
pad_data->codec_data = NULL;
}
}
if (pad_data->stream_id == mux->video_stream_id)
mux->video_stream_id = 0;
GST_OBJECT_UNLOCK (pad);
gst_collect_pads2_remove_pad (mux->collect, pad);
}
static void
add_buffer_to_goplist (MpegPsMux * mux, GstBuffer * buf)
{
GstBufferListIterator *it;
if (mux->gop_list == NULL)
mux->gop_list = gst_buffer_list_new ();
it = gst_buffer_list_iterate (mux->gop_list);
/* move iterator to end */
while (gst_buffer_list_iterator_next_group (it)) {
/* .. */
}
gst_buffer_list_iterator_add_group (it);
gst_buffer_list_iterator_add (it, buf);
gst_buffer_list_iterator_free (it);
}
static gboolean
new_packet_cb (guint8 * data, guint len, void *user_data)
{
/* Called when the PsMux has prepared a packet for output. Return FALSE
* on error */
MpegPsMux *mux = (MpegPsMux *) user_data;
GstBuffer *buf;
GstFlowReturn ret;
GST_LOG_OBJECT (mux, "Outputting a packet of length %d", len);
buf = gst_buffer_new_and_alloc (len);
if (G_UNLIKELY (buf == NULL)) {
mux->last_flow_ret = GST_FLOW_ERROR;
return FALSE;
}
gst_buffer_set_caps (buf, GST_PAD_CAPS (mux->srcpad));
memcpy (GST_BUFFER_DATA (buf), data, len);
GST_BUFFER_TIMESTAMP (buf) = mux->last_ts;
if (mux->aggregate_gops) {
add_buffer_to_goplist (mux, buf);
return TRUE;
}
ret = gst_pad_push (mux->srcpad, buf);
if (G_UNLIKELY (ret != GST_FLOW_OK)) {
mux->last_flow_ret = ret;
return FALSE;
}
return TRUE;
}
static gboolean
mpegpsdemux_prepare_srcpad (MpegPsMux * mux)
{
GValue val = { 0, };
GList *headers, *l;
/* prepare the source pad for output */
GstEvent *new_seg =
gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_BYTES, 0, -1, 0);
GstCaps *caps = gst_caps_new_simple ("video/mpeg",
"mpegversion", G_TYPE_INT, 2,
"systemstream", G_TYPE_BOOLEAN, TRUE,
NULL);
/* gst_static_pad_template_get_caps (&mpegpsmux_src_factory); */
headers = psmux_get_stream_headers (mux->psmux);
g_value_init (&val, GST_TYPE_ARRAY);
for (l = headers; l != NULL; l = l->next) {
GValue buf_val = { 0, };
g_value_init (&buf_val, GST_TYPE_BUFFER);
gst_value_take_buffer (&buf_val, GST_BUFFER (l->data));
l->data = NULL;
gst_value_array_append_value (&val, &buf_val);
g_value_unset (&buf_val);
}
gst_caps_set_value (caps, "streamheader", &val);
g_value_unset (&val);
g_list_free (headers);
/* Set caps on src pad from our template and push new segment */
gst_pad_set_caps (mux->srcpad, caps);
if (!gst_pad_push_event (mux->srcpad, new_seg)) {
GST_WARNING_OBJECT (mux, "New segment event was not handled");
return FALSE;
}
return TRUE;
}
static GstStateChangeReturn
mpegpsmux_change_state (GstElement * element, GstStateChange transition)
{
/* control the collect pads */
MpegPsMux *mux = GST_MPEG_PSMUX (element);
GstStateChangeReturn ret;
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
gst_collect_pads2_start (mux->collect);
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
gst_collect_pads2_stop (mux->collect);
break;
case GST_STATE_CHANGE_READY_TO_NULL:
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
default:
break;
}
return ret;
}
static gboolean
plugin_init (GstPlugin * plugin)
{
if (!gst_element_register (plugin, "mpegpsmux", GST_RANK_PRIMARY,
mpegpsmux_get_type ()))
return FALSE;
GST_DEBUG_CATEGORY_INIT (mpegpsmux_debug, "mpegpsmux", 0,
"MPEG Program Stream muxer");
return TRUE;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, GST_VERSION_MINOR,
"mpegpsmux", "MPEG-PS muxer",
plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);