mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-09-09 05:38:58 +00:00
864 lines
28 KiB
C
864 lines
28 KiB
C
/*
|
|
* Copyright 2006, 2007, 2008 Fluendo S.A.
|
|
* Authors: Jan Schmidt <jan@fluendo.com>
|
|
* Kapil Agrawal <kapil@fluendo.com>
|
|
* Julien Moutte <julien@fluendo.com>
|
|
*
|
|
* This library is licensed under 4 different licenses and you
|
|
* can choose to use it under the terms of any one of them. The
|
|
* four licenses are the MPL 1.1, the LGPL, the GPL and the MIT
|
|
* license.
|
|
*
|
|
* MPL:
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License
|
|
* Version 1.1 (the "License"); you may not use this file except in
|
|
* compliance with the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/MPL/.
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS"
|
|
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
|
|
* License for the specific language governing rights and limitations
|
|
* under the License.
|
|
*
|
|
* LGPL:
|
|
*
|
|
* 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.
|
|
*
|
|
* GPL:
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program 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 General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*
|
|
* MIT:
|
|
*
|
|
* 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 "mpegtsmux.h"
|
|
|
|
#include "mpegtsmux_h264.h"
|
|
#include "mpegtsmux_aac.h"
|
|
|
|
GST_DEBUG_CATEGORY (mpegtsmux_debug);
|
|
#define GST_CAT_DEFAULT mpegtsmux_debug
|
|
|
|
enum
|
|
{
|
|
ARG_0,
|
|
ARG_M2TS_MODE
|
|
};
|
|
|
|
static GstStaticPadTemplate mpegtsmux_sink_factory =
|
|
GST_STATIC_PAD_TEMPLATE ("sink_%d",
|
|
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, 4 };"
|
|
"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 }; " "audio/x-ac3;" "audio/x-dts"));
|
|
|
|
static GstStaticPadTemplate mpegtsmux_src_factory =
|
|
GST_STATIC_PAD_TEMPLATE ("src",
|
|
GST_PAD_SRC,
|
|
GST_PAD_ALWAYS,
|
|
GST_STATIC_CAPS ("video/mpegts, "
|
|
"systemstream = (boolean) true, " "packetsize = (int) { 188, 192} ")
|
|
);
|
|
|
|
static void gst_mpegtsmux_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec);
|
|
static void gst_mpegtsmux_get_property (GObject * object, guint prop_id,
|
|
GValue * value, GParamSpec * pspec);
|
|
|
|
static void mpegtsmux_dispose (GObject * object);
|
|
static gboolean new_packet_cb (guint8 * data, guint len, void *user_data,
|
|
gint64 new_pcr);
|
|
static void release_buffer_cb (guint8 * data, void *user_data);
|
|
|
|
static gboolean mpegtsdemux_prepare_srcpad (MpegTsMux * mux);
|
|
static GstFlowReturn mpegtsmux_collected (GstCollectPads * pads,
|
|
MpegTsMux * mux);
|
|
static GstPad *mpegtsmux_request_new_pad (GstElement * element,
|
|
GstPadTemplate * templ, const gchar * name);
|
|
static void mpegtsmux_release_pad (GstElement * element, GstPad * pad);
|
|
static GstStateChangeReturn mpegtsmux_change_state (GstElement * element,
|
|
GstStateChange transition);
|
|
|
|
GST_BOILERPLATE (MpegTsMux, mpegtsmux, GstElement, GST_TYPE_ELEMENT);
|
|
|
|
static void
|
|
mpegtsmux_base_init (gpointer g_class)
|
|
{
|
|
const GstElementDetails mpegtsmux_details = {
|
|
"MPEG Transport Stream Muxer",
|
|
"Codec/Muxer",
|
|
"Multiplexes media streams into an MPEG Transport Stream",
|
|
"Fluendo <contact@fluendo.com>"
|
|
};
|
|
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
|
|
|
|
gst_element_class_add_pad_template (element_class,
|
|
gst_static_pad_template_get (&mpegtsmux_sink_factory));
|
|
gst_element_class_add_pad_template (element_class,
|
|
gst_static_pad_template_get (&mpegtsmux_src_factory));
|
|
|
|
gst_element_class_set_details (element_class, &mpegtsmux_details);
|
|
}
|
|
|
|
static void
|
|
mpegtsmux_class_init (MpegTsMuxClass * klass)
|
|
{
|
|
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
|
|
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
|
|
|
|
gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_mpegtsmux_set_property);
|
|
gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_mpegtsmux_get_property);
|
|
gobject_class->dispose = mpegtsmux_dispose;
|
|
|
|
gstelement_class->request_new_pad = mpegtsmux_request_new_pad;
|
|
gstelement_class->release_pad = mpegtsmux_release_pad;
|
|
gstelement_class->change_state = mpegtsmux_change_state;
|
|
|
|
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_M2TS_MODE,
|
|
g_param_spec_boolean ("m2ts_mode", "M2TS(192 bytes) Mode",
|
|
"Defines what packet size to use, normal TS format ie .ts(188 bytes) "
|
|
"or Blue-Ray disc ie .m2ts(192 bytes).", FALSE, G_PARAM_READWRITE));
|
|
|
|
}
|
|
|
|
static void
|
|
mpegtsmux_init (MpegTsMux * mux, MpegTsMuxClass * g_class)
|
|
{
|
|
mux->srcpad =
|
|
gst_pad_new_from_template (gst_static_pad_template_get
|
|
(&mpegtsmux_src_factory), "src");
|
|
gst_pad_use_fixed_caps (mux->srcpad);
|
|
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 (mpegtsmux_collected), mux);
|
|
|
|
mux->tsmux = tsmux_new ();
|
|
tsmux_set_write_func (mux->tsmux, new_packet_cb, mux);
|
|
mux->program = tsmux_program_new (mux->tsmux);
|
|
|
|
mux->first = TRUE;
|
|
mux->last_flow_ret = GST_FLOW_OK;
|
|
mux->adapter = gst_adapter_new ();
|
|
mux->m2ts_mode = FALSE;
|
|
mux->first_pcr = TRUE;
|
|
mux->last_ts = 0;
|
|
}
|
|
|
|
static void
|
|
mpegtsmux_dispose (GObject * object)
|
|
{
|
|
MpegTsMux *mux = GST_MPEG_TSMUX (object);
|
|
|
|
if (mux->adapter) {
|
|
gst_adapter_clear (mux->adapter);
|
|
gst_object_unref (mux->adapter);
|
|
mux->adapter = NULL;
|
|
}
|
|
if (mux->collect) {
|
|
gst_object_unref (mux->collect);
|
|
mux->collect = NULL;
|
|
}
|
|
if (mux->tsmux) {
|
|
tsmux_free (mux->tsmux);
|
|
mux->tsmux = NULL;
|
|
}
|
|
|
|
GST_CALL_PARENT (G_OBJECT_CLASS, dispose, (object));
|
|
}
|
|
|
|
static void
|
|
gst_mpegtsmux_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
MpegTsMux *mux = GST_MPEG_TSMUX (object);
|
|
|
|
switch (prop_id) {
|
|
case ARG_M2TS_MODE:
|
|
/*set incase if the output stream need to be of 192 bytes */
|
|
mux->m2ts_mode = g_value_get_boolean (value);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_mpegtsmux_get_property (GObject * object, guint prop_id,
|
|
GValue * value, GParamSpec * pspec)
|
|
{
|
|
MpegTsMux *mux = GST_MPEG_TSMUX (object);
|
|
|
|
switch (prop_id) {
|
|
case ARG_M2TS_MODE:
|
|
g_value_set_boolean (value, mux->m2ts_mode);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
release_buffer_cb (guint8 * data, void *user_data)
|
|
{
|
|
GstBuffer *buf = (GstBuffer *) user_data;
|
|
gst_buffer_unref (buf);
|
|
}
|
|
|
|
static GstFlowReturn
|
|
mpegtsmux_create_stream (MpegTsMux * mux, MpegTsPadData * ts_data, GstPad * pad)
|
|
{
|
|
GstFlowReturn ret = GST_FLOW_ERROR;
|
|
GstCaps *caps = gst_pad_get_negotiated_caps (pad);
|
|
GstStructure *s;
|
|
|
|
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 with PID 0x%04x",
|
|
ts_data->pid);
|
|
ts_data->stream = tsmux_create_stream (mux->tsmux, TSMUX_ST_VIDEO_DIRAC,
|
|
ts_data->pid);
|
|
} else if (gst_structure_has_name (s, "audio/x-ac3")) {
|
|
GST_DEBUG_OBJECT (pad, "Creating AC3 stream with PID 0x%04x", ts_data->pid);
|
|
ts_data->stream = tsmux_create_stream (mux->tsmux, TSMUX_ST_PS_AUDIO_AC3,
|
|
ts_data->pid);
|
|
} else if (gst_structure_has_name (s, "audio/x-dts")) {
|
|
GST_DEBUG_OBJECT (pad, "Creating DTS stream with PID 0x%04x", ts_data->pid);
|
|
ts_data->stream = tsmux_create_stream (mux->tsmux, TSMUX_ST_PS_AUDIO_DTS,
|
|
ts_data->pid);
|
|
} else if (gst_structure_has_name (s, "audio/x-lpcm")) {
|
|
GST_DEBUG_OBJECT (pad, "Creating LPCM stream with PID 0x%04x",
|
|
ts_data->pid);
|
|
ts_data->stream = tsmux_create_stream (mux->tsmux, TSMUX_ST_PS_AUDIO_LPCM,
|
|
ts_data->pid);
|
|
} else if (gst_structure_has_name (s, "video/x-h264")) {
|
|
const GValue *value;
|
|
GST_DEBUG_OBJECT (pad, "Creating H264 stream with PID 0x%04x",
|
|
ts_data->pid);
|
|
/* Codec data contains SPS/PPS which need to go in stream for valid ES */
|
|
value = gst_structure_get_value (s, "codec_data");
|
|
if (value) {
|
|
ts_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 (ts_data->codec_data));
|
|
ts_data->prepare_func = mpegtsmux_prepare_h264;
|
|
} else {
|
|
ts_data->codec_data = NULL;
|
|
}
|
|
ts_data->stream = tsmux_create_stream (mux->tsmux, TSMUX_ST_VIDEO_H264,
|
|
ts_data->pid);
|
|
} 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 with "
|
|
"PID 0x%04x", ts_data->pid);
|
|
ts_data->stream = tsmux_create_stream (mux->tsmux, TSMUX_ST_AUDIO_MPEG1,
|
|
ts_data->pid);
|
|
break;
|
|
case 2:
|
|
GST_DEBUG_OBJECT (pad, "Creating MPEG Audio, version 2 stream with "
|
|
"PID 0x%04x", ts_data->pid);
|
|
ts_data->stream = tsmux_create_stream (mux->tsmux, TSMUX_ST_AUDIO_MPEG2,
|
|
ts_data->pid);
|
|
break;
|
|
case 4:
|
|
{
|
|
const GValue *value;
|
|
/* Codec data contains SPS/PPS which need to go in stream for valid ES */
|
|
value = gst_structure_get_value (s, "codec_data");
|
|
if (value) {
|
|
ts_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 (ts_data->codec_data));
|
|
ts_data->prepare_func = mpegtsmux_prepare_aac;
|
|
} else {
|
|
ts_data->codec_data = NULL;
|
|
}
|
|
GST_DEBUG_OBJECT (pad, "Creating MPEG Audio, version 4 stream with "
|
|
"PID 0x%04x", ts_data->pid);
|
|
ts_data->stream = tsmux_create_stream (mux->tsmux, TSMUX_ST_AUDIO_AAC,
|
|
ts_data->pid);
|
|
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 with PID 0x%04x",
|
|
ts_data->pid);
|
|
ts_data->stream = tsmux_create_stream (mux->tsmux, TSMUX_ST_VIDEO_MPEG1,
|
|
ts_data->pid);
|
|
} else if (mpegversion == 2) {
|
|
GST_DEBUG_OBJECT (pad,
|
|
"Creating MPEG Video, version 2 stream with PID 0x%04x",
|
|
ts_data->pid);
|
|
ts_data->stream = tsmux_create_stream (mux->tsmux, TSMUX_ST_VIDEO_MPEG2,
|
|
ts_data->pid);
|
|
} else {
|
|
GST_DEBUG_OBJECT (pad,
|
|
"Creating MPEG Video, version 4 stream with PID 0x%04x",
|
|
ts_data->pid);
|
|
ts_data->stream = tsmux_create_stream (mux->tsmux, TSMUX_ST_VIDEO_MPEG4,
|
|
ts_data->pid);
|
|
}
|
|
}
|
|
|
|
if (ts_data->stream != NULL) {
|
|
gst_structure_get_int (s, "rate", &ts_data->stream->audio_sampling);
|
|
gst_structure_get_int (s, "channels", &ts_data->stream->audio_channels);
|
|
gst_structure_get_int (s, "bitrate", &ts_data->stream->audio_bitrate);
|
|
|
|
tsmux_stream_set_buffer_release_func (ts_data->stream, release_buffer_cb);
|
|
tsmux_program_add_stream (mux->program, ts_data->stream);
|
|
|
|
ret = GST_FLOW_OK;
|
|
}
|
|
|
|
beach:
|
|
return ret;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
mpegtsmux_create_streams (MpegTsMux * mux)
|
|
{
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
GSList *walk = mux->collect->data;
|
|
|
|
/* Create the streams */
|
|
while (walk) {
|
|
GstCollectData *c_data = (GstCollectData *) walk->data;
|
|
MpegTsPadData *ts_data = (MpegTsPadData *) walk->data;
|
|
|
|
walk = g_slist_next (walk);
|
|
|
|
if (ts_data->stream == NULL) {
|
|
ret = mpegtsmux_create_stream (mux, ts_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 MpegTsPadData *
|
|
mpegtsmux_choose_best_stream (MpegTsMux * mux)
|
|
{
|
|
MpegTsPadData *best = NULL;
|
|
GstCollectData *c_best = NULL;
|
|
GSList *walk;
|
|
|
|
for (walk = mux->collect->data; walk != NULL; walk = g_slist_next (walk)) {
|
|
GstCollectData *c_data = (GstCollectData *) walk->data;
|
|
MpegTsPadData *ts_data = (MpegTsPadData *) walk->data;
|
|
|
|
if (ts_data->eos == FALSE) {
|
|
if (ts_data->queued_buf == NULL) {
|
|
GstBuffer *buf;
|
|
|
|
ts_data->queued_buf = buf =
|
|
gst_collect_pads_peek (mux->collect, c_data);
|
|
|
|
if (buf != NULL) {
|
|
if (ts_data->prepare_func) {
|
|
buf = ts_data->prepare_func (buf, ts_data, mux);
|
|
if (buf) { /* Take the prepared buffer instead */
|
|
gst_buffer_unref (ts_data->queued_buf);
|
|
ts_data->queued_buf = buf;
|
|
} else { /* If data preparation returned NULL, use unprepared one */
|
|
buf = ts_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 (ts_data->last_ts == GST_CLOCK_TIME_NONE ||
|
|
ts_data->last_ts < GST_BUFFER_TIMESTAMP (buf)) {
|
|
ts_data->cur_ts = ts_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
|
|
ts_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 (ts_data->cur_ts),
|
|
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)),
|
|
GST_BUFFER_TIMESTAMP (buf), ts_data->pid);
|
|
|
|
/* Choose a stream we've never seen a timestamp for to ensure
|
|
* we push enough buffers from it to reach a timestamp */
|
|
if (ts_data->last_ts == GST_CLOCK_TIME_NONE) {
|
|
best = ts_data;
|
|
c_best = c_data;
|
|
}
|
|
} else {
|
|
ts_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 (ts_data->last_ts != GST_CLOCK_TIME_NONE &&
|
|
best->last_ts != GST_CLOCK_TIME_NONE &&
|
|
ts_data->last_ts < best->last_ts) {
|
|
best = ts_data;
|
|
c_best = c_data;
|
|
}
|
|
} else {
|
|
best = ts_data;
|
|
c_best = c_data;
|
|
}
|
|
}
|
|
}
|
|
if (c_best) {
|
|
gst_buffer_unref (gst_collect_pads_pop (mux->collect, c_best));
|
|
}
|
|
|
|
return best;
|
|
}
|
|
|
|
#define COLLECT_DATA_PAD(collect_data) (((GstCollectData *)(collect_data))->pad)
|
|
|
|
static GstFlowReturn
|
|
mpegtsmux_collected (GstCollectPads * pads, MpegTsMux * mux)
|
|
{
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
MpegTsPadData *best = NULL;
|
|
|
|
GST_DEBUG_OBJECT (mux, "Pads collected");
|
|
|
|
if (mux->first) {
|
|
ret = mpegtsmux_create_streams (mux);
|
|
if (G_UNLIKELY (ret != GST_FLOW_OK))
|
|
return ret;
|
|
|
|
best = mpegtsmux_choose_best_stream (mux);
|
|
|
|
if (mux->pcr_stream == NULL) {
|
|
if (best) {
|
|
/* Take the first data stream for the PCR */
|
|
GST_DEBUG_OBJECT (COLLECT_DATA_PAD (best), "Use stream as PCR");
|
|
mux->pcr_stream = best->stream;
|
|
}
|
|
}
|
|
|
|
/* Set the chosen PCR stream */
|
|
g_return_val_if_fail (mux->pcr_stream != NULL, GST_FLOW_ERROR);
|
|
tsmux_program_set_pcr_stream (mux->program, mux->pcr_stream);
|
|
|
|
if (!mpegtsdemux_prepare_srcpad (mux)) {
|
|
GST_DEBUG_OBJECT (mux, "Failed to send new segment");
|
|
goto new_seg_fail;
|
|
}
|
|
|
|
mux->first = FALSE;
|
|
} else {
|
|
best = mpegtsmux_choose_best_stream (mux);
|
|
}
|
|
|
|
if (best != NULL) {
|
|
GstBuffer *buf = best->queued_buf;
|
|
gint64 pts = -1;
|
|
|
|
g_return_val_if_fail (buf != NULL, GST_FLOW_ERROR);
|
|
|
|
GST_DEBUG_OBJECT (COLLECT_DATA_PAD (best),
|
|
"Chose stream for output (PID: 0x%04x)", best->pid);
|
|
|
|
if (GST_CLOCK_TIME_IS_VALID (best->cur_ts)) {
|
|
pts = GSTTIME_TO_MPEGTIME (best->cur_ts);
|
|
GST_DEBUG_OBJECT (mux, "Buffer has TS %" GST_TIME_FORMAT " pts %"
|
|
G_GINT64_FORMAT, GST_TIME_ARGS (best->cur_ts), pts);
|
|
}
|
|
|
|
tsmux_stream_add_data (best->stream, GST_BUFFER_DATA (buf),
|
|
GST_BUFFER_SIZE (buf), buf, pts, -1);
|
|
best->queued_buf = NULL;
|
|
|
|
while (tsmux_stream_bytes_in_buffer (best->stream) > 0) {
|
|
if (!tsmux_write_stream_packet (mux->tsmux, best->stream)) {
|
|
GST_DEBUG_OBJECT (mux, "Failed to write data packet");
|
|
goto write_fail;
|
|
}
|
|
}
|
|
if (mux->pcr_stream == best->stream) {
|
|
mux->last_ts = best->last_ts;
|
|
}
|
|
} else {
|
|
/* FIXME: Drain all remaining streams */
|
|
/* At EOS */
|
|
gst_pad_push_event (mux->srcpad, gst_event_new_eos ());
|
|
}
|
|
|
|
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 *
|
|
mpegtsmux_request_new_pad (GstElement * element,
|
|
GstPadTemplate * templ, const gchar * name)
|
|
{
|
|
MpegTsMux *mux = GST_MPEG_TSMUX (element);
|
|
gint pid = -1;
|
|
gchar *pad_name = NULL;
|
|
GstPad *pad = NULL;
|
|
MpegTsPadData *pad_data = NULL;
|
|
|
|
if (name != NULL && sscanf (name, "sink_%d", &pid) == 1) {
|
|
if (tsmux_find_stream (mux->tsmux, pid))
|
|
goto stream_exists;
|
|
} else {
|
|
pid = tsmux_get_new_pid (mux->tsmux);
|
|
}
|
|
|
|
pad_name = g_strdup_printf ("sink_%d", pid);
|
|
pad = gst_pad_new_from_template (templ, pad_name);
|
|
g_free (pad_name);
|
|
|
|
pad_data = (MpegTsPadData *) gst_collect_pads_add_pad (mux->collect, pad,
|
|
sizeof (MpegTsPadData));
|
|
if (pad_data == NULL)
|
|
goto pad_failure;
|
|
|
|
pad_data->pid = pid;
|
|
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;
|
|
|
|
stream_exists:
|
|
GST_ELEMENT_ERROR (element, STREAM, MUX, ("Duplicate PID requested"), (NULL));
|
|
return NULL;
|
|
|
|
could_not_add:
|
|
GST_ELEMENT_ERROR (element, STREAM, FAILED,
|
|
("Internal data stream error."), ("Could not add pad to element"));
|
|
gst_collect_pads_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
|
|
mpegtsmux_release_pad (GstElement * element, GstPad * pad)
|
|
{
|
|
MpegTsMux *mux = GST_MPEG_TSMUX (element);
|
|
MpegTsPadData *pad_data = NULL;
|
|
|
|
GST_DEBUG_OBJECT (mux, "Pad %" GST_PTR_FORMAT " being released", pad);
|
|
|
|
/* Get the MpegTsPadData out of the pad */
|
|
GST_OBJECT_LOCK (pad);
|
|
pad_data = (MpegTsPadData *) 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;
|
|
}
|
|
}
|
|
GST_OBJECT_UNLOCK (pad);
|
|
|
|
gst_collect_pads_remove_pad (mux->collect, pad);
|
|
}
|
|
|
|
static gboolean
|
|
new_packet_cb (guint8 * data, guint len, void *user_data, gint64 new_pcr)
|
|
{
|
|
/* Called when the TsMux has prepared a packet for output. Return FALSE
|
|
* on error */
|
|
MpegTsMux *mux = (MpegTsMux *) user_data;
|
|
GstBuffer *buf, *out_buf;
|
|
GstFlowReturn ret;
|
|
gfloat current_ts;
|
|
gint64 m2ts_pcr, pcr_bytes, chunk_bytes;
|
|
gint8 *temp_ptr;
|
|
gint64 ts_rate;
|
|
|
|
if (mux->m2ts_mode == TRUE) {
|
|
/* Enters when the m2ts-mode is set true */
|
|
buf = gst_buffer_new_and_alloc (M2TS_PACKET_LENGTH);
|
|
if (G_UNLIKELY (buf == NULL)) {
|
|
mux->last_flow_ret = GST_FLOW_ERROR;
|
|
return FALSE;
|
|
}
|
|
gst_buffer_set_caps (buf, GST_PAD_CAPS (mux->srcpad));
|
|
|
|
/* copies the ts data of 188 bytes to the m2ts buffer at an offset
|
|
of 4 bytes of timestamp */
|
|
memcpy (GST_BUFFER_DATA (buf) + 4, data, len);
|
|
|
|
if (new_pcr >= 0) {
|
|
/*when there is a pcr value in ts data */
|
|
pcr_bytes = 0;
|
|
if (mux->first_pcr) {
|
|
/*Incase of first pcr */
|
|
/*writing the 4 byte timestamp value */
|
|
GST_WRITE_UINT32_BE (GST_BUFFER_DATA (buf), new_pcr);
|
|
|
|
GST_LOG_OBJECT (mux, "Outputting a packet of length %d",
|
|
M2TS_PACKET_LENGTH);
|
|
ret = gst_pad_push (mux->srcpad, buf);
|
|
if (G_UNLIKELY (ret != GST_FLOW_OK)) {
|
|
mux->last_flow_ret = ret;
|
|
return FALSE;
|
|
}
|
|
mux->first_pcr = FALSE;
|
|
mux->previous_pcr = new_pcr;
|
|
pcr_bytes = M2TS_PACKET_LENGTH;
|
|
}
|
|
chunk_bytes = gst_adapter_available (mux->adapter);
|
|
|
|
if (G_UNLIKELY (chunk_bytes)) {
|
|
/* calculate rate based on latest and previous pcr values */
|
|
ts_rate = ((chunk_bytes * STANDARD_TIME_CLOCK) / (new_pcr -
|
|
mux->previous_pcr));
|
|
while (1) {
|
|
/*loop till all the accumulated ts packets are transformed to
|
|
m2ts packets and pushed */
|
|
current_ts = ((gfloat) mux->previous_pcr / STANDARD_TIME_CLOCK) +
|
|
((gfloat) pcr_bytes / ts_rate);
|
|
m2ts_pcr = (((gint64) (STANDARD_TIME_CLOCK * current_ts / 300) &
|
|
TWO_POW_33_MINUS1) * 300) + ((gint64) (STANDARD_TIME_CLOCK *
|
|
current_ts) % 300);
|
|
temp_ptr = (gint8 *) & m2ts_pcr;
|
|
|
|
out_buf = gst_adapter_take_buffer (mux->adapter, M2TS_PACKET_LENGTH);
|
|
if (G_UNLIKELY (!out_buf))
|
|
break;
|
|
gst_buffer_set_caps (out_buf, GST_PAD_CAPS (mux->srcpad));
|
|
|
|
/*writing the 4 byte timestamp value */
|
|
GST_WRITE_UINT32_BE (GST_BUFFER_DATA (out_buf), m2ts_pcr);
|
|
|
|
GST_LOG_OBJECT (mux, "Outputting a packet of length %d",
|
|
M2TS_PACKET_LENGTH);
|
|
ret = gst_pad_push (mux->srcpad, out_buf);
|
|
if (G_UNLIKELY (ret != GST_FLOW_OK)) {
|
|
mux->last_flow_ret = ret;
|
|
return FALSE;
|
|
}
|
|
pcr_bytes += M2TS_PACKET_LENGTH;
|
|
}
|
|
mux->previous_pcr = m2ts_pcr;
|
|
}
|
|
} else
|
|
/* If theres no pcr in current ts packet then push the packet
|
|
to an adapter, which is used to create m2ts packets */
|
|
gst_adapter_push (mux->adapter, buf);
|
|
} else {
|
|
/* In case of Normal Ts packets */
|
|
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;
|
|
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
|
|
mpegtsdemux_prepare_srcpad (MpegTsMux * mux)
|
|
{
|
|
GstEvent *new_seg =
|
|
gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_BYTES, 0, -1, 0);
|
|
GstCaps *caps = gst_caps_new_simple ("video/mpegts",
|
|
"systemstream", G_TYPE_BOOLEAN, TRUE,
|
|
"packetsize", G_TYPE_INT,
|
|
(mux->m2ts_mode ? M2TS_PACKET_LENGTH : NORMAL_TS_PACKET_LENGTH),
|
|
NULL);
|
|
|
|
// gst_static_pad_template_get_caps (&mpegtsmux_src_factory);
|
|
|
|
/* 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
|
|
mpegtsmux_change_state (GstElement * element, GstStateChange transition)
|
|
{
|
|
MpegTsMux *mux = GST_MPEG_TSMUX (element);
|
|
GstStateChangeReturn ret;
|
|
|
|
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;
|
|
case GST_STATE_CHANGE_READY_TO_NULL:
|
|
if (mux->adapter)
|
|
gst_adapter_clear (mux->adapter);
|
|
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, "mpegtsmux", GST_RANK_PRIMARY,
|
|
mpegtsmux_get_type ()))
|
|
return FALSE;
|
|
|
|
GST_DEBUG_CATEGORY_INIT (mpegtsmux_debug, "mpegtsmux", 0,
|
|
"MPEG Transport Stream muxer");
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, GST_VERSION_MINOR,
|
|
"mpegtsmux", "MPEG-TS muxer",
|
|
plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);
|