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gstdvbvideosink.c
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gstdvbvideosink.c
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/*
* GStreamer DVB Media Sink
*
* Copyright 2011 <[email protected]>
*
* based on code by:
* Copyright 2006 Felix Domke <[email protected]>
* Copyright 2005 Thomas Vander Stichele <[email protected]>
* Copyright 2005 Ronald S. Bultje <[email protected]>
*
* 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.
*
* Alternatively, the contents of this file may be used under the
* GNU Lesser General Public License Version 2.1 (the "LGPL"), in
* which case the following provisions apply instead of the ones
* mentioned above:
*
* 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.
*/
/**
* SECTION:element-plugin
*
* <refsect2>
* <title>Example launch line</title>
* <para>
* <programlisting>
* gst-launch -v -m audiotestsrc ! plugin ! fakesink silent=TRUE
* </programlisting>
* </para>
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <unistd.h>
#include <stdint.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <linux/dvb/video.h>
#include <fcntl.h>
#include <poll.h>
#include <string.h>
#include <stdio.h>
#if GST_VERSION_MAJOR < 1
#include <gst/gst.h>
#include <gst/base/gstbasesink.h>
#else
#include <gstreamer-1.0/gst/gst.h>
#include <gstreamer-1.0/gst/base/gstbasesink.h>
#endif
#define PACK_UNPACKED_XVID_DIVX5_BITSTREAM
#include "common.h"
#include "gstdvbvideosink.h"
#include "gstdvbsink-marshal.h"
#ifndef VIDEO_SET_CODEC_DATA
typedef struct video_codec_data
{
int length;
guint8 *data;
} video_codec_data_t;
#define VIDEO_SET_CODEC_DATA _IOW('o', 80, video_codec_data_t)
#endif
#ifdef PACK_UNPACKED_XVID_DIVX5_BITSTREAM
struct bitstream
{
guint8 *data;
guint8 last;
int avail;
};
void bitstream_init(struct bitstream *bit, const void *buffer, gboolean wr)
{
bit->data = (guint8*) buffer;
if (wr) {
bit->avail = 0;
bit->last = 0;
}
else {
bit->avail = 8;
bit->last = *bit->data++;
}
}
unsigned long bitstream_get(struct bitstream *bit, int bits)
{
unsigned long res = 0;
while (bits)
{
unsigned int d = bits;
if (!bit->avail)
{
bit->last = *bit->data++;
bit->avail = 8;
}
if (d > bit->avail)
d=bit->avail;
res<<=d;
res|=(bit->last>>(bit->avail-d))&~(-1<<d);
bit->avail -= d;
bits -= d;
}
return res;
}
void bitstream_put(struct bitstream *bit, unsigned long val, int bits)
{
while (bits)
{
bit->last |= ((val & (1 << (bits-1))) ? 1 : 0) << (7 - bit->avail);
if (++bit->avail == 8)
{
*bit->data = bit->last;
++bit->data;
bit->last = 0;
bit->avail = 0;
}
--bits;
}
}
#endif
GST_DEBUG_CATEGORY_STATIC (dvbvideosink_debug);
#define GST_CAT_DEFAULT dvbvideosink_debug
#define VIDEO_CAPS \
"width = (int) [ 16, 4096 ], " \
"height = (int) [ 16, 4096 ] "
#define MPEG4V2_LIMITED_CAPS \
"width = (int) [ 16, 800 ], " \
"height = (int) [ 16, 600 ], " \
"framerate = (fraction) [ 0, MAX ]"
enum
{
SIGNAL_GET_DECODER_TIME,
LAST_SIGNAL
};
static guint gst_dvb_videosink_signals[LAST_SIGNAL] = { 0 };
static GstStaticPadTemplate sink_factory =
GST_STATIC_PAD_TEMPLATE (
"sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (
#ifdef HAVE_MPEG4
"video/mpeg, "
"mpegversion = (int) 4, "
VIDEO_CAPS "; "
#endif
"video/mpeg, "
"mpegversion = (int) { 1, 2 }, "
VIDEO_CAPS "; "
#ifdef HAVE_H264
"video/x-h264, "
VIDEO_CAPS "; "
#endif
#ifdef HAVE_H263
"video/x-h263, "
VIDEO_CAPS "; "
#endif
#ifdef HAVE_MPEG4V2
"video/x-msmpeg, "
#ifdef HAVE_LIMITED_MPEG4V2
MPEG4V2_LIMITED_CAPS
#else
VIDEO_CAPS
#endif
", msmpegversion = (int) 43; "
"video/x-divx, "
#ifdef HAVE_LIMITED_MPEG4V2
MPEG4V2_LIMITED_CAPS
#else
VIDEO_CAPS
#endif
", divxversion = (int) 3;"
"video/x-divx, "
#ifdef HAVE_LIMITED_MPEG4V2
MPEG4V2_LIMITED_CAPS
#else
VIDEO_CAPS
#endif
", divxversion = (int) [4, 6];"
"video/x-xvid, "
#ifdef HAVE_LIMITED_MPEG4V2
MPEG4V2_LIMITED_CAPS
#else
VIDEO_CAPS
#endif
"; "
"video/x-3ivx, "
#ifdef HAVE_LIMITED_MPEG4V2
MPEG4V2_LIMITED_CAPS
#else
VIDEO_CAPS
#endif
"; "
#endif
#ifdef HAVE_WMV
"video/x-wmv, "
VIDEO_CAPS ", wmvversion = (int) 3; "
#endif
"video/mpegts, systemstream=(boolean)true, "
VIDEO_CAPS "; "
)
);
#if GST_VERSION_MAJOR < 1
static void gst_dvbvideosink_init(GstDVBVideoSink *self, GstDVBVideoSinkClass *gclass);
#else
static void gst_dvbvideosink_init(GstDVBVideoSink *self);
#endif
#define DEBUG_INIT \
GST_DEBUG_CATEGORY_INIT(dvbvideosink_debug, "dvbvideosink", 0, "dvbvideosink element");
#if GST_VERSION_MAJOR < 1
static void gst_dvbvideosink_base_init(gpointer self)
{
GstElementClass *element_class = GST_ELEMENT_CLASS(self);
gst_element_class_add_pad_template(element_class, gst_static_pad_template_get(&sink_factory));
gst_element_class_set_details_simple(element_class,
"DVB video sink",
"Generic/DVBVideoSink",
"Outputs PES into a linuxtv dvb video device",
"PLi team");
}
GST_BOILERPLATE_FULL(GstDVBVideoSink, gst_dvbvideosink, GstBaseSink, GST_TYPE_BASE_SINK, DEBUG_INIT);
#else
static GstBaseSinkClass *parent_class = NULL;
G_DEFINE_TYPE_WITH_CODE(GstDVBVideoSink, gst_dvbvideosink, GST_TYPE_BASE_SINK, DEBUG_INIT);
#endif
static gboolean gst_dvbvideosink_start (GstBaseSink * sink);
static gboolean gst_dvbvideosink_stop (GstBaseSink * sink);
static gboolean gst_dvbvideosink_event (GstBaseSink * sink, GstEvent * event);
static GstFlowReturn gst_dvbvideosink_render (GstBaseSink * sink, GstBuffer * buffer);
static gboolean gst_dvbvideosink_set_caps (GstBaseSink * sink, GstCaps * caps);
static gboolean gst_dvbvideosink_unlock (GstBaseSink * basesink);
static gboolean gst_dvbvideosink_unlock_stop (GstBaseSink * basesink);
static GstStateChangeReturn gst_dvbvideosink_change_state (GstElement * element, GstStateChange transition);
static gint64 gst_dvbvideosink_get_decoder_time (GstDVBVideoSink *self);
/* initialize the plugin's class */
static void gst_dvbvideosink_class_init(GstDVBVideoSinkClass *self)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (self);
GstBaseSinkClass *gstbasesink_class = GST_BASE_SINK_CLASS (self);
GstElementClass *element_class = GST_ELEMENT_CLASS (self);
#if GST_VERSION_MAJOR >= 1
parent_class = g_type_class_peek_parent(self);
gst_element_class_add_pad_template(element_class, gst_static_pad_template_get(&sink_factory));
gst_element_class_set_static_metadata(element_class,
"DVB video sink",
"Generic/DVBVideoSink",
"Outputs PES into a linuxtv dvb video device",
"PLi team");
#endif
gstbasesink_class->start = GST_DEBUG_FUNCPTR (gst_dvbvideosink_start);
gstbasesink_class->stop = GST_DEBUG_FUNCPTR (gst_dvbvideosink_stop);
gstbasesink_class->render = GST_DEBUG_FUNCPTR (gst_dvbvideosink_render);
gstbasesink_class->event = GST_DEBUG_FUNCPTR (gst_dvbvideosink_event);
gstbasesink_class->unlock = GST_DEBUG_FUNCPTR (gst_dvbvideosink_unlock);
gstbasesink_class->unlock_stop = GST_DEBUG_FUNCPTR (gst_dvbvideosink_unlock_stop);
gstbasesink_class->set_caps = GST_DEBUG_FUNCPTR (gst_dvbvideosink_set_caps);
element_class->change_state = GST_DEBUG_FUNCPTR (gst_dvbvideosink_change_state);
gst_dvb_videosink_signals[SIGNAL_GET_DECODER_TIME] =
g_signal_new ("get-decoder-time",
G_TYPE_FROM_CLASS (self),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GstDVBVideoSinkClass, get_decoder_time),
NULL, NULL, gst_dvbsink_marshal_INT64__VOID, G_TYPE_INT64, 0);
self->get_decoder_time = gst_dvbvideosink_get_decoder_time;
}
#define H264_BUFFER_SIZE (64*1024+2048)
/* initialize the new element
* instantiate pads and add them to element
* set functions
* initialize structure
*/
#if GST_VERSION_MAJOR < 1
static void gst_dvbvideosink_init(GstDVBVideoSink *self, GstDVBVideoSinkClass *gclass)
#else
static void gst_dvbvideosink_init(GstDVBVideoSink *self)
#endif
{
self->must_send_header = TRUE;
self->h264_nal_len_size = 0;
self->pesheader_buffer = NULL;
self->codec_data = NULL;
self->codec_type = CT_H264;
self->stream_type = STREAMTYPE_UNKNOWN;
#ifdef PACK_UNPACKED_XVID_DIVX5_BITSTREAM
self->must_pack_bitstream = FALSE;
self->num_non_keyframes = 0;
self->prev_frame = NULL;
#endif
#if GST_VERSION_MAJOR >= 1
self->use_dts = FALSE;
#endif
self->paused = self->playing = self->unlocking = self->flushing = FALSE;
self->pts_written = FALSE;
self->lastpts = 0;
self->timestamp_offset = 0;
self->queue = NULL;
self->fd = -1;
self->unlockfd[0] = self->unlockfd[1] = -1;
self->saved_fallback_framerate[0] = 0;
self->rate = 1.0;
gst_base_sink_set_sync(GST_BASE_SINK(self), FALSE);
gst_base_sink_set_async_enabled(GST_BASE_SINK(self), TRUE);
}
static gint64 gst_dvbvideosink_get_decoder_time(GstDVBVideoSink *self)
{
gint64 cur = 0;
if (self->fd < 0 || !self->playing || !self->pts_written) return GST_CLOCK_TIME_NONE;
ioctl(self->fd, VIDEO_GET_PTS, &cur);
if (cur)
{
self->lastpts = cur;
}
else
{
cur = self->lastpts;
}
cur *= 11111;
return cur - self->timestamp_offset;
}
static gboolean gst_dvbvideosink_unlock(GstBaseSink *basesink)
{
GstDVBVideoSink *self = GST_DVBVIDEOSINK (basesink);
self->unlocking = TRUE;
/* wakeup the poll */
write(self->unlockfd[1], "\x01", 1);
GST_DEBUG_OBJECT(basesink, "unlock");
return TRUE;
}
static gboolean gst_dvbvideosink_unlock_stop(GstBaseSink *basesink)
{
GstDVBVideoSink *self = GST_DVBVIDEOSINK (basesink);
self->unlocking = FALSE;
GST_DEBUG_OBJECT(basesink, "unlock_stop");
return TRUE;
}
static gboolean gst_dvbvideosink_event(GstBaseSink *sink, GstEvent *event)
{
GstDVBVideoSink *self = GST_DVBVIDEOSINK (sink);
GST_DEBUG_OBJECT (self, "EVENT %s", gst_event_type_get_name(GST_EVENT_TYPE (event)));
int ret = TRUE;
switch (GST_EVENT_TYPE (event))
{
case GST_EVENT_FLUSH_START:
self->flushing = TRUE;
/* wakeup the poll */
write(self->unlockfd[1], "\x01", 1);
if(self->paused) ret = GST_BASE_SINK_CLASS(parent_class)->event(sink, event);
break;
case GST_EVENT_FLUSH_STOP:
if (self->fd >= 0) ioctl(self->fd, VIDEO_CLEAR_BUFFER);
GST_OBJECT_LOCK(self);
self->must_send_header = TRUE;
while (self->queue)
{
queue_pop(&self->queue);
}
self->flushing = FALSE;
GST_OBJECT_UNLOCK(self);
if(self->paused) ret = GST_BASE_SINK_CLASS(parent_class)->event(sink, event);
break;
case GST_EVENT_EOS:
{
gboolean pass_eos = FALSE;
struct pollfd pfd[2];
pfd[0].fd = self->unlockfd[0];
pfd[0].events = POLLIN;
pfd[1].fd = self->fd;
pfd[1].events = POLLIN;
#if GST_VERSION_MAJOR < 1
GST_PAD_PREROLL_UNLOCK(sink->sinkpad);
#else
GST_BASE_SINK_PREROLL_UNLOCK(sink);
#endif
while (1)
{
int retval = poll(pfd, 2, 250);
if (retval < 0)
{
perror("poll in EVENT_EOS");
ret = FALSE;
break;
}
if (pfd[0].revents & POLLIN)
{
GST_DEBUG_OBJECT (self, "wait EOS aborted!!\n");
ret = FALSE;
break;
}
if (pfd[1].revents & POLLIN)
{
GST_DEBUG_OBJECT (self, "got buffer empty from driver!\n");
break;
}
if (sink->flushing)
{
GST_DEBUG_OBJECT (self, "wait EOS flushing!!\n");
ret = FALSE;
break;
}
}
#if GST_VERSION_MAJOR < 1
GST_PAD_PREROLL_LOCK(sink->sinkpad);
#else
GST_BASE_SINK_PREROLL_LOCK(sink);
#endif
if (ret) ret = GST_BASE_SINK_CLASS(parent_class)->event(sink, event);
break;
}
#if GST_VERSION_MAJOR < 1
case GST_EVENT_NEWSEGMENT:
{
GstFormat format;
gboolean update;
gdouble rate;
gint64 start, end, pos;
gst_event_parse_new_segment(event, &update, &rate, &format, &start, &end, &pos);
#else
case GST_EVENT_SEGMENT:
{
const GstSegment *segment;
GstFormat format;
gdouble rate;
guint64 start, end, pos;
gst_event_parse_segment(event, &segment);
format = segment->format;
rate = segment->rate;
start = segment->start;
end = segment->stop;
pos = segment->position;
#endif
GST_DEBUG_OBJECT(self, "GST_EVENT_NEWSEGMENT rate=%f\n", rate);
if (format == GST_FORMAT_TIME)
{
self->timestamp_offset = start - pos;
if (rate != self->rate)
{
int skip = 0, repeat = 0;
if (rate > 1.0)
{
skip = (int)rate;
}
else if (rate < 1.0)
{
repeat = 1.0 / rate;
}
ioctl(self->fd, VIDEO_SLOWMOTION, repeat);
ioctl(self->fd, VIDEO_FAST_FORWARD, skip);
ioctl(self->fd, VIDEO_CONTINUE);
self->rate = rate;
}
}
break;
}
case GST_EVENT_CAPS:
{
GstCaps *caps;
gst_event_parse_caps(event, &caps);
if (caps)
{
ret = gst_dvbvideosink_set_caps(sink, caps);
gst_caps_unref(caps);
}
break;
}
default:
ret = GST_BASE_SINK_CLASS(parent_class)->event(sink, event);
break;
}
return ret;
}
static int video_write(GstBaseSink *sink, GstDVBVideoSink *self, GstBuffer *buffer, size_t start, size_t end)
{
size_t written = start;
size_t len = end;
struct pollfd pfd[2];
guint8 *data;
int retval = 0;
#if GST_VERSION_MAJOR < 1
data = GST_BUFFER_DATA(buffer);
#else
GstMapInfo map;
gst_buffer_map(buffer, &map, GST_MAP_READ);
data = map.data;
#endif
pfd[0].fd = self->unlockfd[0];
pfd[0].events = POLLIN;
pfd[1].fd = self->fd;
pfd[1].events = POLLOUT | POLLPRI;
do
{
if (self->flushing)
{
GST_DEBUG_OBJECT(self, "flushing, skip %d bytes", len - written);
break;
}
else if (self->paused || self->unlocking)
{
GST_OBJECT_LOCK(self);
queue_push(&self->queue, buffer, written, end);
GST_OBJECT_UNLOCK(self);
GST_DEBUG_OBJECT(self, "pushed %d bytes to queue", len - written);
break;
}
else
{
GST_LOG_OBJECT (self, "going into poll, have %d bytes to write", len - written);
}
if (poll(pfd, 2, -1) < 0)
{
if (errno == EINTR) continue;
retval = -1;
break;
}
if (pfd[0].revents & POLLIN)
{
/* read all stop commands */
while (1)
{
gchar command;
int res = read(self->unlockfd[0], &command, 1);
if (res < 0)
{
GST_DEBUG_OBJECT (self, "no more commands");
/* no more commands */
break;
}
}
}
if (pfd[1].revents & POLLPRI)
{
GstStructure *s;
GstMessage *msg;
struct video_event evt;
if (ioctl(self->fd, VIDEO_GET_EVENT, &evt) < 0)
{
g_warning("failed to ioctl VIDEO_GET_EVENT!");
}
else
{
GST_INFO_OBJECT (self, "VIDEO_EVENT %d", evt.type);
if (evt.type == VIDEO_EVENT_SIZE_CHANGED) {
s = gst_structure_new ("eventSizeChanged",
"aspect_ratio", G_TYPE_INT, evt.u.size.aspect_ratio == 0 ? 2 : 3,
"width", G_TYPE_INT, evt.u.size.w,
"height", G_TYPE_INT, evt.u.size.h, NULL);
msg = gst_message_new_element (GST_OBJECT(sink), s);
gst_element_post_message (GST_ELEMENT(sink), msg);
}
else if (evt.type == VIDEO_EVENT_FRAME_RATE_CHANGED)
{
s = gst_structure_new ("eventFrameRateChanged",
"frame_rate", G_TYPE_INT, evt.u.frame_rate, NULL);
msg = gst_message_new_element (GST_OBJECT(sink), s);
gst_element_post_message (GST_ELEMENT(sink), msg);
}
else if (evt.type == 16 /*VIDEO_EVENT_PROGRESSIVE_CHANGED*/)
{
s = gst_structure_new ("eventProgressiveChanged",
"progressive", G_TYPE_INT, evt.u.frame_rate, NULL);
msg = gst_message_new_element (GST_OBJECT(sink), s);
gst_element_post_message (GST_ELEMENT(sink), msg);
}
else
{
g_warning ("unhandled DVBAPI Video Event %d", evt.type);
}
}
}
if (pfd[1].revents & POLLOUT)
{
size_t queuestart, queueend;
GstBuffer *queuebuffer;
GST_OBJECT_LOCK(self);
if (queue_front(&self->queue, &queuebuffer, &queuestart, &queueend) >= 0)
{
guint8 *queuedata;
#if GST_VERSION_MAJOR < 1
queuedata = GST_BUFFER_DATA(queuebuffer);
#else
GstMapInfo queuemap;
gst_buffer_map(queuebuffer, &queuemap, GST_MAP_READ);
queuedata = queuemap.data;
#endif
int wr = write(self->fd, queuedata + queuestart, queueend - queuestart);
#if GST_VERSION_MAJOR >= 1
gst_buffer_unmap(queuebuffer, &queuemap);
#endif
if (wr < 0)
{
switch (errno)
{
case EINTR:
case EAGAIN:
break;
default:
GST_OBJECT_UNLOCK(self);
retval = -3;
break;
}
if (retval < 0) break;
}
else if (wr >= queueend - queuestart)
{
queue_pop(&self->queue);
GST_DEBUG_OBJECT (self, "written %d queue bytes... pop entry", wr);
}
else
{
self->queue->start += wr;
GST_DEBUG_OBJECT (self, "written %d queue bytes... update offset", wr);
}
GST_OBJECT_UNLOCK(self);
continue;
}
GST_OBJECT_UNLOCK(self);
int wr = write(self->fd, data + written, len - written);
if (wr < 0)
{
switch (errno)
{
case EINTR:
case EAGAIN:
continue;
default:
retval = -3;
break;
}
if (retval < 0) break;
}
written += wr;
}
} while (written < len);
#if GST_VERSION_MAJOR >= 1
gst_buffer_unmap(buffer, &map);
#endif
return retval;
}
static GstFlowReturn gst_dvbvideosink_render(GstBaseSink *sink, GstBuffer *buffer)
{
GstDVBVideoSink *self = GST_DVBVIDEOSINK(sink);
guint8 *pes_header;
gsize pes_header_len = 0;
gsize data_len;
guint8 *data, *original_data;
guint8 *codec_data = NULL;
gsize codec_data_size = 0;
gsize payload_len = 0;
GstBuffer *tmpbuf = NULL;
GstFlowReturn ret = GST_FLOW_OK;
if (self->fd < 0)
{
return GST_FLOW_OK;
}
#if GST_VERSION_MAJOR < 1
pes_header = GST_BUFFER_DATA(self->pesheader_buffer);
original_data = data = GST_BUFFER_DATA(buffer);
data_len = GST_BUFFER_SIZE(buffer);
if (self->codec_data)
{
codec_data = GST_BUFFER_DATA(self->codec_data);
codec_data_size = GST_BUFFER_SIZE(self->codec_data);
}
#else
GstMapInfo map, pesheadermap, codecdatamap;
gst_buffer_map(buffer, &map, GST_MAP_READ);
original_data = data = map.data;
data_len = map.size;
gst_buffer_map(self->pesheader_buffer, &pesheadermap, GST_MAP_WRITE);
pes_header = pesheadermap.data;
if (self->codec_data)
{
gst_buffer_map(self->codec_data, &codecdatamap, GST_MAP_READ);
codec_data = codecdatamap.data;
codec_data_size = codecdatamap.size;
}
#endif
#ifdef PACK_UNPACKED_XVID_DIVX5_BITSTREAM
gboolean commit_prev_frame_data = FALSE, cache_prev_frame = FALSE;
#endif
#ifdef PACK_UNPACKED_XVID_DIVX5_BITSTREAM
if (self->must_pack_bitstream)
{
cache_prev_frame = TRUE;
unsigned int pos = 0;
while (pos < data_len)
{
if (memcmp(&data[pos], "\x00\x00\x01", 3))
{
pos++;
continue;
}
pos += 3;
if ((data[pos++] & 0xF0) == 0x20)
{ // we need time_inc_res
gboolean low_delay=FALSE;
unsigned int ver_id = 1, shape=0, time_inc_res=0, tmp=0;
struct bitstream bit;
bitstream_init(&bit, data+pos, 0);
bitstream_get(&bit, 9);
if (bitstream_get(&bit, 1))
{
ver_id = bitstream_get(&bit, 4); // ver_id
bitstream_get(&bit, 3);
}
if ((tmp = bitstream_get(&bit, 4)) == 15)
{ // Custom Aspect Ration
bitstream_get(&bit, 8); // skip AR width
bitstream_get(&bit, 8); // skip AR height
}
if (bitstream_get(&bit, 1))
{
bitstream_get(&bit, 2);
low_delay = bitstream_get(&bit, 1) ? TRUE : FALSE;
if (bitstream_get(&bit, 1))
{
bitstream_get(&bit, 32);
bitstream_get(&bit, 32);
bitstream_get(&bit, 15);
}
}
shape = bitstream_get(&bit, 2);
if (ver_id != 1 && shape == 3 /* Grayscale */) bitstream_get(&bit, 4);
bitstream_get(&bit, 1);
time_inc_res = bitstream_get(&bit, 16);
self->time_inc_bits = 0;
while (time_inc_res)
{ // count bits
++self->time_inc_bits;
time_inc_res >>= 1;
}
}
}
}
if (self->must_pack_bitstream)
{
int tmp1, tmp2;
unsigned char c1, c2;
unsigned int pos = 0;
while (pos < data_len)
{
if (memcmp(&data[pos], "\x00\x00\x01\xb2", 4))
{
pos++;
continue;
}
pos += 4;
if (data_len - pos < 13) break;
if (sscanf((char*)data+pos, "DivX%d%c%d%cp", &tmp1, &c1, &tmp2, &c2) == 4 && (c1 == 'b' || c1 == 'B') && (c2 == 'p' || c2 == 'P'))
{
GST_INFO_OBJECT (self, "%s seen... already packed!", (char*)data+pos);
self->must_pack_bitstream = FALSE;
break;
}
}
}
#endif
pes_header[0] = 0;
pes_header[1] = 0;
pes_header[2] = 1;
pes_header[3] = 0xE0;
pes_header[6] = 0x81;
pes_header[7] = 0; /* no pts */
pes_header[8] = 0;
pes_header_len = 9;
if (self->codec_type == CT_VC1 || self->codec_type == CT_VC1_SM)
{
if (!(GST_BUFFER_FLAGS(buffer) & GST_BUFFER_FLAG_DELTA_UNIT))
{
pes_header[6] = 0x80;
}
}
#if GST_VERSION_MAJOR < 1
if (GST_BUFFER_TIMESTAMP(buffer) != GST_CLOCK_TIME_NONE)
#else
if (GST_BUFFER_PTS_IS_VALID(buffer) || (self->use_dts && GST_BUFFER_DTS_IS_VALID(buffer)))
#endif
{
pes_header[7] = 0x80; /* pts */
pes_header[8] = 5; /* pts size */
pes_header_len += 5;
#if GST_VERSION_MAJOR < 1
pes_set_pts(GST_BUFFER_TIMESTAMP(buffer), pes_header);
#else
pes_set_pts(GST_BUFFER_PTS_IS_VALID(buffer) ? GST_BUFFER_PTS(buffer) : GST_BUFFER_DTS(buffer), pes_header);
#endif
if (self->codec_data)
{
if (self->must_send_header)
{
if (self->codec_type != CT_MPEG1 && self->codec_type != CT_MPEG2 && (self->codec_type != CT_DIVX4 || data[3] == 0x00))
{
if (self->codec_type == CT_DIVX311)
{
video_write(sink, self, self->codec_data, 0, codec_data_size);
}
else
{
memcpy(pes_header + pes_header_len, codec_data, codec_data_size);
pes_header_len += codec_data_size;
}
self->must_send_header = FALSE;
}
}
if (self->codec_type == CT_H264)
{
unsigned int pos = 0;
if (self->h264_nal_len_size >= 3)
{
#if GST_VERSION_MAJOR >= 1
/* we need to write to the buffer */
gst_buffer_unmap(buffer, &map);
if (!gst_buffer_is_writable(buffer))
{
/* buffer is not writable, create a new buffer to which we can write */
buffer = tmpbuf = gst_buffer_copy(buffer);
}
gst_buffer_map(buffer, &map, GST_MAP_READ | GST_MAP_WRITE);
original_data = data = map.data;
data_len = map.size;
#endif
while (1)
{
unsigned int pack_len = 0;
int i;
for (i = 0; i < self->h264_nal_len_size; i++, pos++)
{
pack_len <<= 8;
pack_len += data[pos];
/* replace the lenght field with \x00..\x00\x01 */
data[pos] = (i == self->h264_nal_len_size - 1) ? 1 : 0;
}
if ((pos + pack_len) >= data_len) break;
pos += pack_len;
}
}
else
{
/* length field too small to insert \x00\x00\x01, so we need to copy everything into a second buffer */
unsigned char *dest;
unsigned int dest_pos = 0;
/* TODO: predict needed size, based on data_len and h264_nal_len_size, and number of frames */
tmpbuf = gst_buffer_new_and_alloc(H264_BUFFER_SIZE);
#if GST_VERSION_MAJOR < 1
dest = GST_BUFFER_DATA(tmpbuf);
#else
GstMapInfo tmpmap;
gst_buffer_map(tmpbuf, &tmpmap, GST_MAP_READ | GST_MAP_WRITE);
dest = tmpmap.data;
#endif
while (1)
{
unsigned int pack_len = 0;
int i;
for (i = 0; i < self->h264_nal_len_size; i++, pos++)
{
pack_len <<= 8;
pack_len += data[pos];
}
memcpy(dest + dest_pos, "\x00\x00\x01", 3);
dest_pos += 3;
memcpy(dest + dest_pos, data + pos, pack_len);
dest_pos += pack_len;
if ((pos + pack_len) >= data_len) break;
pos += pack_len;
}
/* switch to the h264 buffer, where we copied the original render buffer contents */
#if GST_VERSION_MAJOR >= 1
gst_buffer_unmap(buffer, &map);
gst_buffer_unmap(tmpbuf, &tmpmap);
#endif
buffer = tmpbuf;
#if GST_VERSION_MAJOR < 1
original_data = data = dest;
#else
gst_buffer_map(buffer, &map, GST_MAP_READ);
original_data = data = map.data;
#endif
data_len = dest_pos;
}
}
else if (self->codec_type == CT_MPEG4_PART2)
{
if (memcmp(data, "\x00\x00\x01", 3))
{
memcpy(pes_header + pes_header_len, "\x00\x00\x01", 3);
pes_header_len += 3;
}
}
else if (self->codec_type == CT_DIVX311)
{
if (memcmp(data, "\x00\x00\x01\xb6", 4))
{
memcpy(pes_header + pes_header_len, "\x00\x00\x01\xb6", 4);
pes_header_len += 4;
}
}
}
}
#ifdef PACK_UNPACKED_XVID_DIVX5_BITSTREAM
if (self->must_pack_bitstream)
{
unsigned int pos = 0;
gboolean i_frame = FALSE;
while (pos < data_len)
{
if (memcmp(&data[pos], "\x00\x00\x01\xb6", 4))
{
pos++;
continue;
}
pos += 4;
switch ((data[pos] & 0xC0) >> 6)
{
case 0: // I-Frame
cache_prev_frame = FALSE;
i_frame = TRUE;
case 1: // P-Frame