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gst/mpegstream/gstmpegdemux.*: Complete overhaul. All DVD specific functionality split to the new dvddemux element.

Browse source 
Original commit message from CVS:
* gst/mpegstream/gstmpegdemux.c:
* gst/mpegstream/gstmpegdemux.h: Complete overhaul. All DVD
specific functionality split to the new dvddemux element.
* gst/mpegstream/gstdvddemux.c:
* gst/mpegstream/gstdvddemux.h: New demultiplexer for DVD (VOB)
streams, derived from mpegdemux.
* gst/mpegstream/gstmpegparse.c: Discontinuity handling cleaned
up. SCR based timestamp rewriting can be turned off (will probably
completely disappear soon).
* ext/dvdnav/dvdnavsrc.c: Changes resulting from a few months
hacking. General cleanup. All printf statements replaced by
debugging messages. Almost complete libdvdnav support.
(dvdnavsrc_class_init): Got rid of unnecessary signals (replaced
by events. New properties for audio and subpicture languages.
(dvdnavsrc_update_highlight): Now uses events.
(dvdnavsrc_user_op): Cleaned up.
(dvdnavsrc_get): Renamed to dvdnavsrc_loop (element is now loop
based). Lots of cleanup, and propper support for most libdvdnav
events.
(dvdnavsrc_make_dvd_event): New function.
(dvdnavsrc_make_dvd_nav_packet_event): New function.
(dvdnavsrc_make_clut_change_event): New function.
This commit is contained in:
Martin Soto 2004-03-27 22:45:41 +00:00
parent 66c93a611a
commit 40b740126e
10 changed files with 2522 additions and 917 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

25
ChangeLog
View file

@ -1,3 +1,28 @@
2004-03-27 Martin Soto <martinsoto@users.sourceforge.net>
* gst/mpegstream/gstmpegdemux.c:
* gst/mpegstream/gstmpegdemux.h: Complete overhaul. All DVD
specific functionality split to the new dvddemux element.
* gst/mpegstream/gstdvddemux.c:
* gst/mpegstream/gstdvddemux.h: New demultiplexer for DVD (VOB)
streams, derived from mpegdemux.
* gst/mpegstream/gstmpegparse.c: Discontinuity handling cleaned
up. SCR based timestamp rewriting can be turned off (will probably
completely disappear soon).
* ext/dvdnav/dvdnavsrc.c: Changes resulting from a few months
hacking. General cleanup. All printf statements replaced by
debugging messages. Almost complete libdvdnav support.
(dvdnavsrc_class_init): Got rid of unnecessary signals (replaced
by events. New properties for audio and subpicture languages.
(dvdnavsrc_update_highlight): Now uses events.
(dvdnavsrc_user_op): Cleaned up.
(dvdnavsrc_get): Renamed to dvdnavsrc_loop (element is now loop
based). Lots of cleanup, and propper support for most libdvdnav
events.
(dvdnavsrc_make_dvd_event): New function.
(dvdnavsrc_make_dvd_nav_packet_event): New function.
(dvdnavsrc_make_clut_change_event): New function.
2004-03-26 Benjamin Otte <otte@gnome.org>
* gst/typefind/gsttypefindfunctions.c: (theora_type_find):

1101
ext/dvdnav/dvdnavsrc.c
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File diff suppressed because it is too large Load diff

15
gst/mpegstream/Makefile.am
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@ -1,11 +1,22 @@
plugin_LTLIBRARIES = libgstmpegstream.la
libgstmpegstream_la_SOURCES = gstmpegstream.c gstmpegparse.c gstmpegdemux.c gstmpegpacketize.c gstrfc2250enc.c gstmpegclock.c
libgstmpegstream_la_SOURCES = gstmpegstream.c \
gstmpegparse.c \
gstmpegdemux.c \
gstdvddemux.c \
gstmpegpacketize.c \
gstrfc2250enc.c \
gstmpegclock.c
libgstmpegstream_la_CFLAGS = $(GST_CFLAGS)
libgstmpegstream_la_LIBADD =
libgstmpegstream_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
noinst_HEADERS = gstmpegparse.h gstmpegdemux.h gstmpegpacketize.h gstrfc2250enc.h gstmpegclock.h
noinst_HEADERS = gstmpegparse.h \
gstmpegdemux.h \
gstdvddemux.h \
gstmpegpacketize.h \
gstrfc2250enc.h \
gstmpegclock.h
EXTRA_DIST = README notes

871
gst/mpegstream/gstdvddemux.c Normal file
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@ -0,0 +1,871 @@
/* GStreamer
* Copyright (C) 2004 Martin Soto <martinsoto@users.sourceforge.net>
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include <gstdvddemux.h>
GST_DEBUG_CATEGORY_STATIC (gstdvddemux_debug);
#define GST_CAT_DEFAULT (gstdvddemux_debug)
#define PARSE_CLASS(o) GST_MPEG_PARSE_CLASS (G_OBJECT_GET_CLASS (o))
#define DEMUX_CLASS(o) GST_MPEG_DEMUX_CLASS (G_OBJECT_GET_CLASS (o))
#define CLASS(o) GST_DVD_DEMUX_CLASS (G_OBJECT_GET_CLASS (o))
/* Element factory information */
static GstElementDetails dvd_demux_details = {
"DVD Demuxer",
"Codec/Demuxer",
"Demultiplexes DVD (VOB) MPEG2 streams",
"Martin Soto <soto@informatik.uni-kl.de>"
};
/* DVDDemux signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
ARG_0,
/* FILL ME */
};
/* Define the capabilities separately, to be able to reuse them. */
#define VIDEO_CAPS \
GST_STATIC_CAPS ("video/mpeg, " \
"mpegversion = (int) { 1, 2 }, " \
"systemstream = (boolean) FALSE" \
)
#define AUDIO_CAPS \
GST_STATIC_CAPS ( \
"audio/mpeg, " \
"mpegversion = (int) 1;" \
"audio/x-raw-int, " \
"endianness = (int) BIG_ENDIAN, " \
"signed = (boolean) TRUE, " \
"width = (int) { 16, 20, 24 }, " \
"depth = (int) { 16, 20, 24 }, " \
"rate = (int) { 48000, 96000 }, " \
"channels = (int) [ 1, 8 ];" \
"audio/x-ac3" \
)
#define SUBPICTURE_CAPS \
GST_STATIC_CAPS ("video/x-dvd-subpicture")
static GstStaticPadTemplate cur_video_template =
GST_STATIC_PAD_TEMPLATE ("current_video",
GST_PAD_SRC,
GST_PAD_ALWAYS,
VIDEO_CAPS);
static GstStaticPadTemplate audio_template =
GST_STATIC_PAD_TEMPLATE ("dvd_audio_%02d",
GST_PAD_SRC,
GST_PAD_SOMETIMES,
AUDIO_CAPS);
static GstStaticPadTemplate cur_audio_template =
GST_STATIC_PAD_TEMPLATE ("current_audio",
GST_PAD_SRC,
GST_PAD_ALWAYS,
AUDIO_CAPS);
static GstStaticPadTemplate subpicture_template =
GST_STATIC_PAD_TEMPLATE ("subpicture_%d",
GST_PAD_SRC,
GST_PAD_SOMETIMES,
SUBPICTURE_CAPS);
static GstStaticPadTemplate cur_subpicture_template =
GST_STATIC_PAD_TEMPLATE ("current_subpicture",
GST_PAD_SRC,
GST_PAD_ALWAYS,
SUBPICTURE_CAPS);
static void gst_dvd_demux_class_init (GstDVDDemuxClass * klass);
static void gst_dvd_demux_base_init (GstDVDDemuxClass * klass);
static void gst_dvd_demux_init (GstDVDDemux * dvd_demux);
static void gst_dvd_demux_send_data (GstMPEGParse * mpeg_parse,
GstData * data, GstClockTime time);
static void gst_dvd_demux_send_discont
(GstMPEGParse * mpeg_parse, GstClockTime time);
static gboolean gst_dvd_demux_handle_dvd_event
(GstDVDDemux * dvd_demux, GstEvent * event);
static GstMPEGStream *gst_dvd_demux_get_audio_stream
(GstMPEGDemux * dvd_demux,
guint8 stream_nr, gint type, const gpointer info);
static GstMPEGStream *gst_dvd_demux_get_subpicture_stream
(GstMPEGDemux * dvd_demux,
guint8 stream_nr, gint type, const gpointer info);
static void gst_dvd_demux_process_private
(GstMPEGDemux * mpeg_demux,
GstBuffer * buffer,
guint stream_nr, GstClockTime timestamp, guint headerlen, guint datalen);
static void gst_dvd_demux_send_subbuffer
(GstMPEGDemux * mpeg_demux,
GstMPEGStream * outstream,
GstBuffer * buffer, GstClockTime timestamp, guint offset, guint size);
static void gst_dvd_demux_set_cur_audio
(GstDVDDemux * dvd_demux, gint stream_nr);
static void gst_dvd_demux_set_cur_subpicture
(GstDVDDemux * dvd_demux, gint stream_nr);
static GstMPEGDemuxClass *parent_class = NULL;
/*static guint gst_dvd_demux_signals[LAST_SIGNAL] = { 0 };*/
GType
gst_dvd_demux_get_type (void)
{
static GType dvd_demux_type = 0;
if (!dvd_demux_type) {
static const GTypeInfo dvd_demux_info = {
sizeof (GstDVDDemuxClass),
(GBaseInitFunc) gst_dvd_demux_base_init,
NULL,
(GClassInitFunc) gst_dvd_demux_class_init,
NULL,
NULL,
sizeof (GstDVDDemux),
0,
(GInstanceInitFunc) gst_dvd_demux_init,
};
dvd_demux_type = g_type_register_static (GST_TYPE_MPEG_DEMUX,
"GstDVDDemux", &dvd_demux_info, 0);
GST_DEBUG_CATEGORY_INIT (gstdvddemux_debug, "dvddemux", 0,
"DVD (VOB) demultiplexer element");
}
return dvd_demux_type;
}
static void
gst_dvd_demux_base_init (GstDVDDemuxClass * klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstMPEGDemuxClass *demux_class = GST_MPEG_DEMUX_CLASS (klass);
GstMPEGParseClass *mpeg_parse_class = (GstMPEGParseClass *) klass;
mpeg_parse_class->send_data = gst_dvd_demux_send_data;
demux_class->audio_template = gst_static_pad_template_get (&audio_template);
klass->cur_video_template = gst_static_pad_template_get (&cur_video_template);
klass->cur_audio_template = gst_static_pad_template_get (&cur_audio_template);
klass->subpicture_template =
gst_static_pad_template_get (&subpicture_template);
klass->cur_subpicture_template =
gst_static_pad_template_get (&cur_subpicture_template);
gst_element_class_add_pad_template (element_class,
demux_class->audio_template);
gst_element_class_add_pad_template (element_class, klass->cur_video_template);
gst_element_class_add_pad_template (element_class, klass->cur_audio_template);
gst_element_class_add_pad_template (element_class,
klass->subpicture_template);
gst_element_class_add_pad_template (element_class,
klass->cur_subpicture_template);
gst_element_class_set_details (element_class, &dvd_demux_details);
}
static void
gst_dvd_demux_class_init (GstDVDDemuxClass * klass)
{
GstElementClass *gstelement_class;
GstMPEGParseClass *mpeg_parse_class;
GstMPEGDemuxClass *mpeg_demux_class;
parent_class = g_type_class_ref (GST_TYPE_MPEG_DEMUX);
gstelement_class = (GstElementClass *) klass;
mpeg_parse_class = (GstMPEGParseClass *) klass;
mpeg_demux_class = (GstMPEGDemuxClass *) klass;
mpeg_parse_class->send_discont = gst_dvd_demux_send_discont;
mpeg_demux_class->get_audio_stream = gst_dvd_demux_get_audio_stream;
mpeg_demux_class->send_subbuffer = gst_dvd_demux_send_subbuffer;
mpeg_demux_class->process_private = gst_dvd_demux_process_private;
klass->get_subpicture_stream = gst_dvd_demux_get_subpicture_stream;
}
static void
gst_dvd_demux_init (GstDVDDemux * dvd_demux)
{
GstMPEGDemux *mpeg_demux = GST_MPEG_DEMUX (dvd_demux);
GstMPEGParse *mpeg_parse = GST_MPEG_PARSE (dvd_demux);
gint i;
GST_FLAG_SET (dvd_demux, GST_ELEMENT_EVENT_AWARE);
/* Create the pads for the current streams. */
dvd_demux->cur_video =
DEMUX_CLASS (dvd_demux)->new_output_pad (mpeg_demux, "current_video",
CLASS (dvd_demux)->cur_video_template);
dvd_demux->cur_audio =
DEMUX_CLASS (dvd_demux)->new_output_pad (mpeg_demux, "current_audio",
CLASS (dvd_demux)->cur_audio_template);
dvd_demux->cur_subpicture =
DEMUX_CLASS (dvd_demux)->new_output_pad (mpeg_demux, "current_subpicture",
CLASS (dvd_demux)->cur_subpicture_template);
dvd_demux->cur_video_nr = 0;
dvd_demux->cur_audio_nr = 0;
dvd_demux->cur_subpicture_nr = 0;
/* Start the timestamp sequence in 0. */
dvd_demux->last_end_ptm = 0;
/* Try to prevent the mpegparse infrastructure from doing timestamp
adjustment. */
mpeg_parse->do_adjust = FALSE;
mpeg_parse->adjust = 0;
dvd_demux->just_flushed = FALSE;
dvd_demux->discont_time = GST_CLOCK_TIME_NONE;
for (i = 0; i < GST_DVD_DEMUX_NUM_SUBPICTURE_STREAMS; i++) {
dvd_demux->subpicture_stream[i] = NULL;
}
}
static void
gst_dvd_demux_send_data (GstMPEGParse * mpeg_parse, GstData * data,
GstClockTime time)
{
GstDVDDemux *dvd_demux = GST_DVD_DEMUX (mpeg_parse);
if (GST_IS_BUFFER (data)) {
gst_buffer_unref (GST_BUFFER (data));
} else {
GstEvent *event = GST_EVENT (data);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_ANY:
gst_dvd_demux_handle_dvd_event (dvd_demux, event);
break;
case GST_EVENT_FLUSH:
GST_DEBUG_OBJECT (dvd_demux, "flush received");
dvd_demux->just_flushed = TRUE;
/* Propagate the event normally. */
gst_pad_event_default (mpeg_parse->sinkpad, event);
break;
default:
gst_pad_event_default (mpeg_parse->sinkpad, event);
break;
}
}
}
static gboolean
gst_dvd_demux_handle_dvd_event (GstDVDDemux * dvd_demux, GstEvent * event)
{
GstMPEGParse *mpeg_parse = GST_MPEG_PARSE (dvd_demux);
GstMPEGDemux *mpeg_demux = GST_MPEG_DEMUX (dvd_demux);
GstStructure *structure = event->event_data.structure.structure;
const char *event_type = gst_structure_get_string (structure, "event");
g_return_val_if_fail (event != NULL, FALSE);
#ifndef GST_DISABLE_GST_DEBUG
{
gchar *text = gst_structure_to_string (structure);
GST_LOG_OBJECT (dvd_demux, "processing event \"%s\"", text);
g_free (text);
}
#endif
if (strcmp (event_type, "dvd-audio-stream-change") == 0) {
gint stream_nr;
gst_structure_get_int (structure, "physical", &stream_nr);
if (stream_nr < -1 || stream_nr >= GST_MPEG_DEMUX_NUM_AUDIO_STREAMS) {
GST_ERROR_OBJECT (dvd_demux,
"GstDVDDemux: Invalid audio stream %02d", stream_nr);
return FALSE;
}
gst_dvd_demux_set_cur_audio (dvd_demux, stream_nr);
gst_event_unref (event);
}
else if (strcmp (event_type, "dvd-spu-stream-change") == 0) {
gint stream_nr;
gst_structure_get_int (structure, "physical", &stream_nr);
if (stream_nr < -1 || stream_nr >= GST_DVD_DEMUX_NUM_SUBPICTURE_STREAMS) {
GST_ERROR_OBJECT (dvd_demux,
"GstDVDDemux: Invalid subpicture stream %02d", stream_nr);
return FALSE;
}
gst_dvd_demux_set_cur_subpicture (dvd_demux, stream_nr);
gst_event_unref (event);
}
else if (strcmp (event_type, "dvd-nav-packet") == 0) {
GstStructure *structure = event->event_data.structure.structure;
GstClockTime start_ptm =
g_value_get_uint64 (gst_structure_get_value (structure, "start_ptm"));
GstClockTime end_ptm =
g_value_get_uint64 (gst_structure_get_value (structure, "end_ptm"));
if (start_ptm != dvd_demux->last_end_ptm) {
/* Set the adjust value to gap the discontinuity. */
mpeg_demux->adjust += GST_CLOCK_DIFF (dvd_demux->last_end_ptm, start_ptm);
GST_DEBUG_OBJECT (dvd_demux,
"PTM sequence discontinuity: from %0.3fs to "
"%0.3fs, new adjust %0.3fs",
(double) dvd_demux->last_end_ptm / GST_SECOND,
(double) start_ptm / GST_SECOND,
(double) mpeg_demux->adjust / GST_SECOND);
}
dvd_demux->last_end_ptm = end_ptm;
if (dvd_demux->just_flushed) {
/* The pipeline was just flushed, schedule a discontinuity with
the next sequence time. We don't do it here to reduce the
time gap between the discontinuity and the subsequent data
blocks. */
dvd_demux->discont_time = start_ptm + mpeg_demux->adjust;
dvd_demux->just_flushed = FALSE;
}
gst_event_unref (event);
}
else {
if (GST_EVENT_TIMESTAMP (event) != GST_CLOCK_TIME_NONE) {
GST_EVENT_TIMESTAMP (event) += mpeg_demux->adjust;
}
gst_pad_event_default (mpeg_parse->sinkpad, event);
}
return TRUE;
}
static void
gst_dvd_demux_send_discont (GstMPEGParse * mpeg_parse, GstClockTime time)
{
GstDVDDemux *dvd_demux = GST_DVD_DEMUX (mpeg_parse);
GstEvent *discont;
gint i;
GST_DEBUG_OBJECT (dvd_demux, "sending discontinuity: %0.3fs",
(double) time / GST_SECOND);
GST_MPEG_PARSE_CLASS (parent_class)->send_discont (mpeg_parse, time);
for (i = 0; i < GST_DVD_DEMUX_NUM_SUBPICTURE_STREAMS; i++) {
if (dvd_demux->subpicture_stream[i] &&
GST_PAD_IS_USABLE (dvd_demux->subpicture_stream[i]->pad)) {
discont = gst_event_new_discontinuous (FALSE, GST_FORMAT_TIME,
time, NULL);
gst_pad_push (dvd_demux->subpicture_stream[i]->pad, GST_DATA (discont));
}
}
/* Distribute the event to the "current" pads. */
if (GST_PAD_IS_USABLE (dvd_demux->cur_video)) {
discont = gst_event_new_discontinuous (FALSE, GST_FORMAT_TIME, time, NULL);
gst_pad_push (dvd_demux->cur_video, GST_DATA (discont));
}
if (GST_PAD_IS_USABLE (dvd_demux->cur_audio)) {
discont = gst_event_new_discontinuous (FALSE, GST_FORMAT_TIME, time, NULL);
gst_pad_push (dvd_demux->cur_audio, GST_DATA (discont));
}
if (GST_PAD_IS_USABLE (dvd_demux->cur_subpicture)) {
discont = gst_event_new_discontinuous (FALSE, GST_FORMAT_TIME, time, NULL);
gst_pad_push (dvd_demux->cur_subpicture, GST_DATA (discont));
}
}
static GstMPEGStream *
gst_dvd_demux_get_audio_stream (GstMPEGDemux * mpeg_demux,
guint8 stream_nr, gint type, const gpointer info)
{
GstDVDDemux *dvd_demux = GST_DVD_DEMUX (mpeg_demux);
guint8 sample_info = 0;
GstMPEGStream *str;
GstDVDLPCMStream *lpcm_str = NULL;
gchar *name;
GstCaps *caps;
gint width, rate, channels;
g_return_val_if_fail (stream_nr < GST_MPEG_DEMUX_NUM_AUDIO_STREAMS, NULL);
g_return_val_if_fail (type > GST_MPEG_DEMUX_AUDIO_UNKNOWN &&
type < GST_DVD_DEMUX_AUDIO_LAST, NULL);
if (type < GST_MPEG_DEMUX_AUDIO_LAST) {
return parent_class->get_audio_stream (mpeg_demux, stream_nr, type, info);
}
if (type == GST_DVD_DEMUX_AUDIO_LPCM) {
sample_info = *((guint8 *) info);
}
str = mpeg_demux->audio_stream[stream_nr];
if (str == NULL) {
if (type != GST_DVD_DEMUX_AUDIO_LPCM) {
str = g_new0 (GstMPEGStream, 1);
} else {
lpcm_str = g_new0 (GstDVDLPCMStream, 1);
str = (GstMPEGStream *) lpcm_str;
}
str->type = GST_MPEG_DEMUX_AUDIO_UNKNOWN;
name = g_strdup_printf ("audio_%02d", stream_nr);
DEMUX_CLASS (dvd_demux)->init_stream (mpeg_demux, type, str, stream_nr,
name, DEMUX_CLASS (dvd_demux)->audio_template);
g_free (name);
mpeg_demux->audio_stream[stream_nr] = str;
} else {
/* This stream may have been created by a derived class, reset the
size. */
if (type != GST_DVD_DEMUX_AUDIO_LPCM) {
str = g_renew (GstMPEGStream, str, 1);
} else {
lpcm_str = g_renew (GstDVDLPCMStream, str, 1);
str = (GstMPEGStream *) lpcm_str;
}
}
if (type != str->type ||
(type == GST_DVD_DEMUX_AUDIO_LPCM &&
sample_info != lpcm_str->sample_info)) {
/* We need to set new caps for this pad. */
switch (type) {
case GST_DVD_DEMUX_AUDIO_LPCM:
/* Determine the sample width. */
switch (sample_info & 0xC0) {
case 0x80:
width = 24;
break;
case 0x40:
width = 20;
break;
default:
width = 16;
break;
}
/* Determine the rate. */
if (sample_info & 0x10) {
rate = 96000;
} else {
rate = 48000;
}
/* Determine the number of channels. */
channels = (sample_info & 0x7) + 1;
caps = gst_caps_new_simple ("audio/x-raw-int",
"endianness", G_TYPE_INT, G_BIG_ENDIAN,
"signed", G_TYPE_BOOLEAN, TRUE,
"width", G_TYPE_INT, width,
"depth", G_TYPE_INT, width,
"rate", G_TYPE_INT, rate, "channels", G_TYPE_INT, channels, NULL);
lpcm_str->sample_info = sample_info;
break;
case GST_DVD_DEMUX_AUDIO_AC3:
caps = gst_caps_new_simple ("audio/x-ac3", NULL);
break;
case GST_DVD_DEMUX_AUDIO_DTS:
caps = gst_caps_new_simple ("audio/x-dts", NULL);
break;
default:
g_return_val_if_reached (NULL);
break;
}
gst_pad_set_explicit_caps (str->pad, caps);
if (str->number == dvd_demux->cur_audio_nr) {
/* This is the current audio stream. Use the same caps. */
gst_pad_set_explicit_caps (dvd_demux->cur_audio, gst_caps_copy (caps));
}
str->type = type;
}
return str;
}
static GstMPEGStream *
gst_dvd_demux_get_subpicture_stream (GstMPEGDemux * mpeg_demux,
guint8 stream_nr, gint type, const gpointer info)
{
GstDVDDemux *dvd_demux = GST_DVD_DEMUX (mpeg_demux);
GstMPEGStream *str;
gchar *name;
GstCaps *caps;
g_return_val_if_fail (stream_nr < GST_DVD_DEMUX_NUM_SUBPICTURE_STREAMS, NULL);
g_return_val_if_fail (type > GST_DVD_DEMUX_SUBP_UNKNOWN &&
type < GST_DVD_DEMUX_SUBP_LAST, NULL);
str = dvd_demux->subpicture_stream[stream_nr];
if (str == NULL) {
str = g_new0 (GstMPEGStream, 1);
str->type = GST_DVD_DEMUX_SUBP_UNKNOWN;
name = g_strdup_printf ("subpicture_%02d", stream_nr);
DEMUX_CLASS (dvd_demux)->init_stream (mpeg_demux, type, str, stream_nr,
name, CLASS (dvd_demux)->subpicture_template);
g_free (name);
dvd_demux->subpicture_stream[stream_nr] = str;
} else {
/* This stream may have been created by a derived class, reset the
size. */
str = g_renew (GstMPEGStream, str, 1);
}
if (str->type != GST_DVD_DEMUX_SUBP_DVD) {
/* We need to set new caps for this pad. */
caps = gst_caps_new_simple ("video/x-dvd-subpicture", NULL);
gst_pad_set_explicit_caps (str->pad, caps);
if (str->number == dvd_demux->cur_subpicture_nr) {
/* This is the current subpicture stream. Use the same caps. */
gst_pad_set_explicit_caps (dvd_demux->cur_subpicture,
gst_caps_copy (caps));
}
str->type = GST_DVD_DEMUX_SUBP_DVD;
}
return str;
}
static void
gst_dvd_demux_process_private (GstMPEGDemux * mpeg_demux,
GstBuffer * buffer,
guint stream_nr, GstClockTime timestamp, guint headerlen, guint datalen)
{
GstDVDDemux *dvd_demux = GST_DVD_DEMUX (mpeg_demux);
guint8 *basebuf;
guint8 ps_id_code, lpcm_sample_info;
GstMPEGStream *outstream = NULL;
guint first_access = 0;
basebuf = GST_BUFFER_DATA (buffer);
/* Determine the substream number. */
ps_id_code = basebuf[headerlen + 4];
/* In the following, the "first access" refers to the location in a
buffer the time stamp is associated to. DVDs include this
information explicitely. */
switch (stream_nr) {
case 0:
/* Private stream 1. */
switch (ps_id_code) {
case 0x80...0x87:
GST_LOG_OBJECT (dvd_demux,
"we have an audio (AC3) packet, track %d", ps_id_code - 0x80);
outstream = DEMUX_CLASS (dvd_demux)->get_audio_stream (mpeg_demux,
ps_id_code - 0x80, GST_DVD_DEMUX_AUDIO_AC3, NULL);
/* Determine the position of the "first access". This
should always be the beginning of an AC3 frame. */
first_access = *(basebuf + headerlen + 6) * 256 +
*(basebuf + headerlen + 7);
headerlen += 4;
datalen -= 4;
break;
case 0xA0...0xA7:
GST_LOG_OBJECT (dvd_demux,
"we have an audio (LPCM) packet, track %d", ps_id_code - 0xA0);
lpcm_sample_info = basebuf[headerlen + 9];
outstream = DEMUX_CLASS (dvd_demux)->get_audio_stream (mpeg_demux,
ps_id_code - 0xA0, GST_DVD_DEMUX_AUDIO_LPCM, &lpcm_sample_info);
/* Determine the position of the "first access". */
first_access = *(basebuf + headerlen + 6) * 256 +
*(basebuf + headerlen + 7);
/* Get rid of the LPCM header. */
headerlen += 7;
datalen -= 7;
break;
case 0x20...0x3f:
GST_LOG_OBJECT (dvd_demux,
"we have a subpicture packet, track %d", ps_id_code - 0x20);
outstream = CLASS (dvd_demux)->get_subpicture_stream (mpeg_demux,
ps_id_code - 0x20, GST_DVD_DEMUX_SUBP_DVD, NULL);
headerlen += 1;
datalen -= 1;
break;
default:
GST_ERROR_OBJECT (dvd_demux,
"unknown DVD (private 1) id 0x%02x", ps_id_code);
break;
}
break;
case 1:
/* Private stream 2 */
switch (ps_id_code) {
case 0:
GST_LOG_OBJECT (dvd_demux, "we have a PCI nav packet");
outstream = DEMUX_CLASS (mpeg_demux)->get_private_stream (mpeg_demux,
1, GST_MPEG_DEMUX_PRIVATE_UNKNOWN, NULL);
break;
case 1:
GST_LOG_OBJECT (dvd_demux, "we have a DSI nav packet");
outstream = DEMUX_CLASS (mpeg_demux)->get_private_stream (mpeg_demux,
1, GST_MPEG_DEMUX_PRIVATE_UNKNOWN, NULL);
break;
default:
GST_ERROR_OBJECT (dvd_demux,
"unknown DVD (private 1) id 0x%02x", ps_id_code);
break;
}
break;
default:
g_return_if_reached ();
break;
}
if (outstream == NULL) {
return;
}
if (timestamp != GST_CLOCK_TIME_NONE && first_access > 1) {
/* We have a first access location. Since GStreamer doesn't have
a means to associate a timestamp to the middle of a buffer, we
send two separate buffers and put the timestamp in the second
one. */
DEMUX_CLASS (dvd_demux)->send_subbuffer (mpeg_demux, outstream,
buffer, GST_CLOCK_TIME_NONE, headerlen + 4, first_access - 1);
DEMUX_CLASS (dvd_demux)->send_subbuffer (mpeg_demux, outstream,
buffer, timestamp,
headerlen + 3 + first_access, datalen - (first_access - 1));
} else {
DEMUX_CLASS (dvd_demux)->send_subbuffer (mpeg_demux, outstream,
buffer, timestamp, headerlen + 4, datalen);
}
}
static void
gst_dvd_demux_send_subbuffer (GstMPEGDemux * mpeg_demux,
GstMPEGStream * outstream, GstBuffer * buffer,
GstClockTime timestamp, guint offset, guint size)
{
GstMPEGParse *mpeg_parse = GST_MPEG_PARSE (mpeg_demux);
GstDVDDemux *dvd_demux = GST_DVD_DEMUX (mpeg_demux);
GstPad *outpad;
gint cur_nr;
/* If there's a pending discontinuity, send it now. The idea is to
minimize the time interval between the discontinuity and the data
buffers following it. */
if (dvd_demux->discont_time != GST_CLOCK_TIME_NONE) {
PARSE_CLASS (mpeg_demux)->send_discont (mpeg_parse,
dvd_demux->discont_time - 200 * GST_MSECOND);
dvd_demux->discont_time = GST_CLOCK_TIME_NONE;
}
/* You never know what happens to a buffer when you send it. Just
in case, we keep a reference to the buffer during the execution
of this function. */
gst_buffer_ref (buffer);
/* Send the buffer to the standard output pad. */
parent_class->send_subbuffer (mpeg_demux, outstream, buffer,
timestamp, offset, size);
/* Determine the current output pad and stream number for the given
type of stream. */
switch (GST_MPEG_DEMUX_STREAM_KIND (outstream->type)) {
case GST_MPEG_DEMUX_STREAM_VIDEO:
outpad = dvd_demux->cur_video;
cur_nr = dvd_demux->cur_video_nr;
break;
case GST_MPEG_DEMUX_STREAM_AUDIO:
outpad = dvd_demux->cur_audio;
cur_nr = dvd_demux->cur_audio_nr;
break;
case GST_MPEG_DEMUX_STREAM_PRIVATE:
outpad = NULL;
cur_nr = 0;
break;
case GST_DVD_DEMUX_STREAM_SUBPICTURE:
outpad = dvd_demux->cur_subpicture;
cur_nr = dvd_demux->cur_subpicture_nr;
break;
default:
g_return_if_reached ();
break;
}
if (outpad != NULL && cur_nr == outstream->number) {
GstBuffer *outbuf;
/* We have a packet of the current stream. Send it to the
corresponding pad as well. */
outbuf = gst_buffer_create_sub (buffer, offset, size);
GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
GST_BUFFER_OFFSET (outbuf) = GST_BUFFER_OFFSET (buffer) + offset;
gst_pad_push (outpad, GST_DATA (outbuf));
}
gst_buffer_unref (buffer);
}
static void
gst_dvd_demux_set_cur_audio (GstDVDDemux * dvd_demux, gint stream_nr)
{
GstMPEGDemux *mpeg_demux = GST_MPEG_DEMUX (dvd_demux);
GstMPEGStream *str;
const GstCaps *caps;
g_return_if_fail (stream_nr >= -1 &&
stream_nr < GST_MPEG_DEMUX_NUM_AUDIO_STREAMS);
GST_DEBUG_OBJECT (dvd_demux, "changing current audio to %02d", stream_nr);
dvd_demux->cur_audio_nr = stream_nr;
if (stream_nr == -1) {
return;
}
str = mpeg_demux->audio_stream[stream_nr];
if (str != NULL) {
/* (Re)set the caps in the "current" pad. */
caps = gst_pad_get_negotiated_caps (str->pad);
if (caps != NULL) {
gst_pad_set_explicit_caps (dvd_demux->cur_audio, caps);
}
}
}
static void
gst_dvd_demux_set_cur_subpicture (GstDVDDemux * dvd_demux, gint stream_nr)
{
GstMPEGStream *str;
const GstCaps *caps;
g_return_if_fail (stream_nr >= -1 &&
stream_nr < GST_DVD_DEMUX_NUM_SUBPICTURE_STREAMS);
GST_DEBUG_OBJECT (dvd_demux, "changing current subpicture to %02d",
stream_nr);
dvd_demux->cur_subpicture_nr = stream_nr;
if (stream_nr == -1) {
return;
}
str = dvd_demux->subpicture_stream[stream_nr];
if (str != NULL) {
/* (Re)set the caps in the "current" pad. */
caps = gst_pad_get_negotiated_caps (str->pad);
if (caps != NULL) {
gst_pad_set_explicit_caps (dvd_demux->cur_subpicture, caps);
}
}
}
gboolean
gst_dvd_demux_plugin_init (GstPlugin * plugin)
{
return gst_element_register (plugin, "dvddemux",
GST_RANK_PRIMARY, GST_TYPE_DVD_DEMUX);
}

143
gst/mpegstream/gstdvddemux.h Normal file
View file

@ -0,0 +1,143 @@
/* GStreamer
* Copyright (C) 2004 Martin Soto <martinsoto@users.sourceforge.net>
*
* 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.
*/
#ifndef __DVD_DEMUX_H__
#define __DVD_DEMUX_H__
#include <gst/gst.h>
#include "gstmpegdemux.h"
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#define GST_TYPE_DVD_DEMUX \
(gst_dvd_demux_get_type())
#define GST_DVD_DEMUX(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DVD_DEMUX,GstDVDDemux))
#define GST_DVD_DEMUX_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_DVD_DEMUX,GstDVDDemuxClass))
#define GST_IS_DVD_DEMUX(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DVD_DEMUX))
#define GST_IS_DVD_DEMUX_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_DVD_DEMUX))
/* Supported kinds of streams in addition to what mpegdemux already
does. */
enum {
GST_DVD_DEMUX_STREAM_SUBPICTURE = GST_MPEG_DEMUX_STREAM_LAST,
GST_DVD_DEMUX_STREAM_LAST,
};
/* Supported number of streams. */
#define GST_DVD_DEMUX_NUM_SUBPICTURE_STREAMS 32
typedef struct _GstDVDLPCMStream GstDVDLPCMStream ;
typedef struct _GstDVDDemux GstDVDDemux;
typedef struct _GstDVDDemuxClass GstDVDDemuxClass;
/* Additional recognized audio types. */
enum {
GST_DVD_DEMUX_AUDIO_LPCM = GST_MPEG_DEMUX_AUDIO_LAST,
GST_DVD_DEMUX_AUDIO_AC3,
GST_DVD_DEMUX_AUDIO_DTS,
GST_DVD_DEMUX_AUDIO_LAST,
};
/* The recognized subpicture types. */
enum {
GST_DVD_DEMUX_SUBP_UNKNOWN =
GST_MPEG_DEMUX_STREAM_TYPE (GST_DVD_DEMUX_STREAM_SUBPICTURE, 1),
GST_DVD_DEMUX_SUBP_DVD,
GST_DVD_DEMUX_SUBP_LAST,
};
/* Extended structure to hold additional information for linear PCM
streams. */
struct _GstDVDLPCMStream {
GstMPEGStream parent;
guint8 sample_info; /* The type of linear PCM samples
associated to this stream. The
values are bit fields with the same
format of the sample_info field in
the linear PCM header. */
};
struct _GstDVDDemux {
GstMPEGDemux parent;
GstPad *cur_video; /* Current video stream pad. */
GstPad *cur_audio; /* Current audio stream pad. */
GstPad *cur_subpicture; /* Current subpicture stream pad. */
gint cur_video_nr; /* Current video stream number. */
gint cur_audio_nr; /* Current audio stream number. */
gint cur_subpicture_nr; /* Current subpicture stream number. */
GstClockTime last_end_ptm; /* End presentation time of the las nav packet
event received. */
gboolean just_flushed; /* The element just received a flush event. */
GstClockTime discont_time; /* If different from GST_CLOCK_TIME_NONE, a
discontinuous event should be sent with the
given time, before sending the next dara
block.. */
GstMPEGStream *subpicture_stream[GST_DVD_DEMUX_NUM_SUBPICTURE_STREAMS];
/* Subpicture output streams. */
};
struct _GstDVDDemuxClass {
GstMPEGDemuxClass parent_class;
GstPadTemplate *cur_video_template;
GstPadTemplate *cur_audio_template;
GstPadTemplate *subpicture_template;
GstPadTemplate *cur_subpicture_template;
GstMPEGStream *
(*get_subpicture_stream)(GstMPEGDemux *mpeg_demux,
guint8 stream_nr,
gint type,
const gpointer info);
};
GType gst_dvd_demux_get_type (void);
gboolean gst_dvd_demux_plugin_init (GstPlugin *plugin);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __DVD_DEMUX_H__ */

988
gst/mpegstream/gstmpegdemux.c
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File diff suppressed because it is too large Load diff

140
gst/mpegstream/gstmpegdemux.h
View file

@ -32,28 +32,78 @@ extern "C" {
#define GST_TYPE_MPEG_DEMUX \
(mpeg_demux_get_type())
(gst_mpeg_demux_get_type())
#define GST_MPEG_DEMUX(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_MPEG_DEMUX,GstMPEGDemux))
#define GST_MPEG_DEMUX_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_MPEG_DEMUX,GstMPEGDemux))
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_MPEG_DEMUX,GstMPEGDemuxClass))
#define GST_IS_MPEG_DEMUX(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_MPEG_DEMUX))
#define GST_IS_MPEG_DEMUX_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_MPEG_DEMUX))
/* Supported kinds of streams. */
enum {
GST_MPEG_DEMUX_STREAM_VIDEO = 1,
GST_MPEG_DEMUX_STREAM_AUDIO,
GST_MPEG_DEMUX_STREAM_PRIVATE,
GST_MPEG_DEMUX_STREAM_LAST,
};
/* Supported number of streams. */
#define GST_MPEG_DEMUX_NUM_VIDEO_STREAMS 16
#define GST_MPEG_DEMUX_NUM_AUDIO_STREAMS 32
#define GST_MPEG_DEMUX_NUM_PRIVATE_STREAMS 2
/* How to make stream type values. */
#define GST_MPEG_DEMUX_STREAM_TYPE(kind, serial) \
(((kind) << 16) + (serial))
/* How to retrieve the stream kind back from a type. */
#define GST_MPEG_DEMUX_STREAM_KIND(type) ((type) >> 16)
/* The recognized video types. */
enum {
GST_MPEG_DEMUX_VIDEO_UNKNOWN =
GST_MPEG_DEMUX_STREAM_TYPE (GST_MPEG_DEMUX_STREAM_VIDEO, 1),
GST_MPEG_DEMUX_VIDEO_MPEG,
GST_MPEG_DEMUX_VIDEO_LAST,
};
/* The recognized audio types. */
enum {
GST_MPEG_DEMUX_AUDIO_UNKNOWN =
GST_MPEG_DEMUX_STREAM_TYPE (GST_MPEG_DEMUX_STREAM_AUDIO, 1),
GST_MPEG_DEMUX_AUDIO_MPEG,
GST_MPEG_DEMUX_AUDIO_LAST,
};
/* The recognized private stream types. */
enum {
GST_MPEG_DEMUX_PRIVATE_UNKNOWN =
GST_MPEG_DEMUX_STREAM_TYPE (GST_MPEG_DEMUX_STREAM_PRIVATE, 1),
GST_MPEG_DEMUX_PRIVATE_LAST,
};
typedef struct _GstMPEGStream GstMPEGStream;
typedef struct _GstMPEGVideoStream GstMPEGVideoStream;
typedef struct _GstMPEGDemux GstMPEGDemux;
typedef struct _GstMPEGDemuxClass GstMPEGDemuxClass;
typedef struct _GstMPEGStream GstMPEGStream;
/* Information associated to a single MPEG stream. */
struct _GstMPEGStream {
gint8 STD_buffer_bound_scale;
gint16 STD_buffer_size_bound;
gint type;
gint number;
GstPad *pad;
guint64 pts;
gint index_id;
gint size_bound;
gint index_id;
gint size_bound;
};
/* Extended structure to hold additional information for video
streams. */
struct _GstMPEGVideoStream {
GstMPEGStream parent;
gint mpeg_version;
};
struct _GstMPEGDemux {
@ -74,35 +124,69 @@ struct _GstMPEGDemux {
gboolean packet_rate_restriction;
gint64 total_size_bound;
#define NUM_PRIVATE_1_STREAMS 8
#define NUM_PCM_STREAMS 8
#define NUM_SUBTITLE_STREAMS 16
#define NUM_VIDEO_STREAMS 16
#define NUM_AUDIO_STREAMS 32
GstIndex *index;
/* stream output */
GstMPEGStream *private_1_stream[NUM_PRIVATE_1_STREAMS]; /* up to 8 ac3 audio tracks */
GstMPEGStream *pcm_stream[NUM_PCM_STREAMS];
GstMPEGStream *subtitle_stream[NUM_SUBTITLE_STREAMS];
GstMPEGStream *private_2_stream;
GstMPEGStream *video_stream[NUM_VIDEO_STREAMS];
GstMPEGStream *audio_stream[NUM_AUDIO_STREAMS];
GstMPEGStream *video_stream[GST_MPEG_DEMUX_NUM_VIDEO_STREAMS];
GstMPEGStream *audio_stream[GST_MPEG_DEMUX_NUM_AUDIO_STREAMS];
GstMPEGStream *private_stream[GST_MPEG_DEMUX_NUM_PRIVATE_STREAMS];
/* The type of linear PCM samples associated to each channel. The
values are bit fields with the same format of the sample_info
field in the linear PCM header. */
guint8 lpcm_sample_info[NUM_PCM_STREAMS];
GstIndex *index;
GstClockTimeDiff adjust; /* Added to all PTS timestamps. This element
keeps always this value in 0, but it is
there for the benefit of subclasses. */
};
struct _GstMPEGDemuxClass {
GstMPEGParseClass parent_class;
GstPadTemplate *video_template;
GstPadTemplate *audio_template;
GstPadTemplate *private_template;
GstPad * (*new_output_pad) (GstMPEGDemux *mpeg_demux,
const gchar *name,
GstPadTemplate *temp);
void (*init_stream) (GstMPEGDemux *mpeg_demux,
gint type,
GstMPEGStream *str,
gint number,
const gchar *name,
GstPadTemplate *temp);
GstMPEGStream *
(*get_video_stream) (GstMPEGDemux *mpeg_demux,
guint8 stream_nr,
gint type,
const gpointer info);
GstMPEGStream *
(*get_audio_stream) (GstMPEGDemux *mpeg_demux,
guint8 stream_nr,
gint type,
const gpointer info);
GstMPEGStream *
(*get_private_stream) (GstMPEGDemux *mpeg_demux,
guint8 stream_nr,
gint type,
const gpointer info);
void (*send_subbuffer) (GstMPEGDemux *mpeg_demux,
GstMPEGStream *outstream,
GstBuffer *buffer,
GstClockTime timestamp,
guint offset,
guint size);
void (*process_private) (GstMPEGDemux *mpeg_demux,
GstBuffer *buffer,
guint stream_nr,
GstClockTime timestamp,
guint headerlen, guint datalen);
};
GType gst_mpeg_demux_get_type(void);
GType gst_mpeg_demux_get_type (void);
gboolean gst_mpeg_demux_plugin_init (GstPlugin *plugin);
gboolean gst_mpeg_demux_plugin_init (GstPlugin *plugin);
#ifdef __cplusplus
}

141
gst/mpegstream/gstmpegparse.c
View file

@ -27,8 +27,13 @@
static GstFormat scr_format;
GST_DEBUG_CATEGORY_STATIC (gstmpegparse_debug);
#define GST_CAT_DEFAULT (gstmpegparse_debug)
GST_DEBUG_CATEGORY_EXTERN (GST_CAT_SEEK);
/* elementfactory information */
static GstElementDetails mpeg_parse_details = {
"MPEG System Parser",
@ -53,7 +58,7 @@ enum
ARG_0,
ARG_SYNC,
ARG_MAX_DISCONT,
ARG_STREAMINFO,
ARG_DO_ADJUST,
/* FILL ME */
};
@ -80,9 +85,14 @@ static void gst_mpeg_parse_set_clock (GstElement * element, GstClock * clock);
static gboolean gst_mpeg_parse_parse_packhead (GstMPEGParse * mpeg_parse,
GstBuffer * buffer);
static void gst_mpeg_parse_handle_discont (GstMPEGParse * mpeg_parse,
GstEvent * event);
static void gst_mpeg_parse_send_data (GstMPEGParse * mpeg_parse, GstData * data,
GstClockTime time);
static void gst_mpeg_parse_handle_discont (GstMPEGParse * mpeg_parse);
static void gst_mpeg_parse_send_discont (GstMPEGParse * mpeg_parse,
GstClockTime time);
static void gst_mpeg_parse_loop (GstElement * element);
@ -120,6 +130,9 @@ gst_mpeg_parse_get_type (void)
mpeg_parse_type =
g_type_register_static (GST_TYPE_ELEMENT, "GstMPEGParse",
&mpeg_parse_info, 0);
GST_DEBUG_CATEGORY_INIT (gstmpegparse_debug, "mpegparse", 0,
"MPEG parser element");
}
return mpeg_parse_type;
}
@ -150,6 +163,11 @@ gst_mpeg_parse_class_init (GstMPEGParseClass * klass)
g_param_spec_int ("max_discont", "Max Discont",
"The maximun allowed SCR discontinuity", 0, G_MAXINT,
DEFAULT_MAX_DISCONT, G_PARAM_READWRITE));
/* FIXME: Default is TRUE to make the behavior backwards compatible.
It probably should be FALSE. */
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DO_ADJUST,
g_param_spec_boolean ("adjust", "adjust", "Adjust timestamps to "
"smooth discontinuities", TRUE, G_PARAM_READWRITE));
gobject_class->get_property = gst_mpeg_parse_get_property;
gobject_class->set_property = gst_mpeg_parse_set_property;
@ -164,8 +182,9 @@ gst_mpeg_parse_class_init (GstMPEGParseClass * klass)
klass->parse_syshead = NULL;
klass->parse_packet = NULL;
klass->parse_pes = NULL;
klass->send_data = gst_mpeg_parse_send_data;
klass->handle_discont = gst_mpeg_parse_handle_discont;
klass->send_data = gst_mpeg_parse_send_data;
klass->send_discont = gst_mpeg_parse_send_discont;
/* FIXME: this is a hack. We add the pad templates here instead
* in the base_init function, since the derived class (mpegdemux)
@ -212,6 +231,8 @@ gst_mpeg_parse_init (GstMPEGParse * mpeg_parse)
mpeg_parse->id = NULL;
mpeg_parse->max_discont = DEFAULT_MAX_DISCONT;
mpeg_parse->do_adjust = TRUE;
GST_FLAG_SET (mpeg_parse, GST_ELEMENT_EVENT_AWARE);
}
@ -249,6 +270,29 @@ gst_mpeg_parse_update_streaminfo (GstMPEGParse * mpeg_parse)
}
#endif
static void
gst_mpeg_parse_handle_discont (GstMPEGParse * mpeg_parse, GstEvent * event)
{
GstClockTime time;
g_return_if_fail (GST_EVENT_TYPE (event) == GST_EVENT_DISCONTINUOUS);
if (gst_event_discont_get_value (event, GST_FORMAT_TIME, &time)) {
GST_DEBUG_OBJECT (mpeg_parse,
"forwarding discontinuity, time: %0.3fs", (double) time / GST_SECOND);
if (CLASS (mpeg_parse)->send_discont)
CLASS (mpeg_parse)->send_discont (mpeg_parse, time);
} else {
/* Use the next SCR to send a discontinuous event. */
mpeg_parse->discont_pending = TRUE;
mpeg_parse->scr_pending = TRUE;
}
mpeg_parse->packetize->resync = TRUE;
gst_event_unref (event);
}
static void
gst_mpeg_parse_send_data (GstMPEGParse * mpeg_parse, GstData * data,
GstClockTime time)
@ -283,29 +327,24 @@ gst_mpeg_parse_send_data (GstMPEGParse * mpeg_parse, GstData * data,
}
static void
gst_mpeg_parse_handle_discont (GstMPEGParse * mpeg_parse)
gst_mpeg_parse_send_discont (GstMPEGParse * mpeg_parse, GstClockTime time)
{
GstEvent *event;
event = gst_event_new_discontinuous (FALSE, GST_FORMAT_TIME,
MPEGTIME_TO_GSTTIME (mpeg_parse->current_scr), NULL);
if (GST_PAD_IS_USABLE (mpeg_parse->srcpad))
if (GST_PAD_IS_USABLE (mpeg_parse->srcpad)) {
event = gst_event_new_discontinuous (FALSE, GST_FORMAT_TIME, time, NULL);
gst_pad_push (mpeg_parse->srcpad, GST_DATA (event));
else
gst_event_unref (event);
}
}
static gboolean
gst_mpeg_parse_parse_packhead (GstMPEGParse * mpeg_parse, GstBuffer * buffer)
{
guint8 *buf;
guint64 scr, scr_adj, scr_orig;
guint64 scr;
guint32 scr1, scr2;
guint32 new_rate;
GST_DEBUG ("in parse_packhead");
buf = GST_BUFFER_DATA (buffer);
buf += 4;
@ -325,8 +364,9 @@ gst_mpeg_parse_parse_packhead (GstMPEGParse * mpeg_parse, GstBuffer * buffer)
scr = (scr * 300 + scr_ext % 300) / 300;
GST_DEBUG ("%" G_GINT64_FORMAT " %d, %08x %08x %" G_GINT64_FORMAT " diff: %"
G_GINT64_FORMAT, scr, scr_ext, scr1, scr2, mpeg_parse->bytes_since_scr,
GST_LOG_OBJECT (mpeg_parse, "%" G_GINT64_FORMAT " %d, %08x %08x %"
G_GINT64_FORMAT " diff: %" G_GINT64_FORMAT,
scr, scr_ext, scr1, scr2, mpeg_parse->bytes_since_scr,
scr - mpeg_parse->current_scr);
buf += 6;
@ -345,36 +385,40 @@ gst_mpeg_parse_parse_packhead (GstMPEGParse * mpeg_parse, GstBuffer * buffer)
new_rate |= buf[2] >> 1;
}
scr_orig = scr;
mpeg_parse->current_scr = scr;
mpeg_parse->scr_pending = FALSE;
mpeg_parse->bytes_since_scr = 0;
scr_adj = scr + mpeg_parse->adjust;
if (mpeg_parse->next_scr == -1) {
mpeg_parse->next_scr = scr;
mpeg_parse->next_scr = mpeg_parse->current_scr;
}
GST_DEBUG ("SCR is %" G_GUINT64_FORMAT " (%" G_GUINT64_FORMAT ") next: %"
G_GINT64_FORMAT " (%" G_GINT64_FORMAT ") diff: %" G_GINT64_FORMAT " (%"
GST_LOG_OBJECT (mpeg_parse,
"SCR is %" G_GUINT64_FORMAT
" (%" G_GUINT64_FORMAT ") next: %"
G_GINT64_FORMAT " (%" G_GINT64_FORMAT
") diff: %" G_GINT64_FORMAT " (%"
G_GINT64_FORMAT ")",
scr,
MPEGTIME_TO_GSTTIME (scr),
mpeg_parse->current_scr,
MPEGTIME_TO_GSTTIME (mpeg_parse->current_scr),
mpeg_parse->next_scr,
MPEGTIME_TO_GSTTIME (mpeg_parse->next_scr),
scr - mpeg_parse->next_scr,
MPEGTIME_TO_GSTTIME (scr) - MPEGTIME_TO_GSTTIME (mpeg_parse->next_scr));
mpeg_parse->current_scr - mpeg_parse->next_scr,
MPEGTIME_TO_GSTTIME (mpeg_parse->current_scr) -
MPEGTIME_TO_GSTTIME (mpeg_parse->next_scr));
if (ABS ((gint64) mpeg_parse->next_scr - (gint64) (scr_adj)) >
if (ABS ((gint64) mpeg_parse->next_scr - (gint64) (scr)) >
mpeg_parse->max_discont) {
GST_DEBUG ("discontinuity detected; expected: %" G_GUINT64_FORMAT " got: %"
G_GUINT64_FORMAT " real:%" G_GINT64_FORMAT " adjust:%" G_GINT64_FORMAT,
mpeg_parse->next_scr, scr_adj, scr, mpeg_parse->adjust);
mpeg_parse->next_scr, mpeg_parse->current_scr + mpeg_parse->adjust,
mpeg_parse->current_scr, mpeg_parse->adjust);
if (mpeg_parse->do_adjust) {
mpeg_parse->adjust +=
(gint64) mpeg_parse->next_scr - (gint64) mpeg_parse->current_scr;
mpeg_parse->adjust = mpeg_parse->next_scr - scr;
scr = mpeg_parse->next_scr;
GST_DEBUG ("new adjust: %" G_GINT64_FORMAT, mpeg_parse->adjust);
} else {
scr = scr_adj;
GST_DEBUG ("new adjust: %" G_GINT64_FORMAT, mpeg_parse->adjust);
}
}
if (mpeg_parse->index && GST_INDEX_IS_WRITABLE (mpeg_parse->index)) {
@ -382,12 +426,9 @@ gst_mpeg_parse_parse_packhead (GstMPEGParse * mpeg_parse, GstBuffer * buffer)
gst_index_add_association (mpeg_parse->index, mpeg_parse->index_id,
GST_ASSOCIATION_FLAG_KEY_UNIT,
GST_FORMAT_BYTES, GST_BUFFER_OFFSET (buffer),
GST_FORMAT_TIME, MPEGTIME_TO_GSTTIME (scr), 0);
GST_FORMAT_TIME, MPEGTIME_TO_GSTTIME (mpeg_parse->current_scr), 0);
}
mpeg_parse->current_scr = scr;
mpeg_parse->scr_pending = FALSE;
if (mpeg_parse->mux_rate != new_rate) {
mpeg_parse->mux_rate = new_rate;
@ -417,7 +458,7 @@ gst_mpeg_parse_loop (GstElement * element)
if (GST_IS_BUFFER (data)) {
GstBuffer *buffer = GST_BUFFER (data);
GST_DEBUG ("have chunk 0x%02X", id);
GST_LOG_OBJECT (mpeg_parse, "have chunk 0x%02X", id);
switch (id) {
case 0xb9:
@ -456,11 +497,8 @@ gst_mpeg_parse_loop (GstElement * element)
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_DISCONTINUOUS:
GST_DEBUG ("event: %d\n", GST_EVENT_TYPE (data));
mpeg_parse->discont_pending = TRUE;
mpeg_parse->packetize->resync = TRUE;
gst_event_unref (event);
if (CLASS (mpeg_parse)->handle_discont)
CLASS (mpeg_parse)->handle_discont (mpeg_parse, event);
return;
default:
break;
@ -479,8 +517,10 @@ gst_mpeg_parse_loop (GstElement * element)
gst_element_set_time (GST_ELEMENT (mpeg_parse),
MPEGTIME_TO_GSTTIME (mpeg_parse->current_scr));
}
if (CLASS (mpeg_parse)->handle_discont) {
CLASS (mpeg_parse)->handle_discont (mpeg_parse);
if (CLASS (mpeg_parse)->send_discont) {
CLASS (mpeg_parse)->send_discont (mpeg_parse,
MPEGTIME_TO_GSTTIME (mpeg_parse->current_scr +
mpeg_parse->adjust));
}
mpeg_parse->discont_pending = FALSE;
} else {
@ -538,9 +578,9 @@ gst_mpeg_parse_loop (GstElement * element)
mpeg_parse->next_scr = scr;
}
GST_DEBUG ("size: %" G_GINT64_FORMAT ", total since SCR: %"
G_GINT64_FORMAT ", next SCR: %" G_GINT64_FORMAT, size, bss,
mpeg_parse->next_scr);
GST_LOG_OBJECT (mpeg_parse, "size: %" G_GINT64_FORMAT
", total since SCR: %" G_GINT64_FORMAT
", next SCR: %" G_GINT64_FORMAT, size, bss, mpeg_parse->next_scr);
}
}
}
@ -816,6 +856,9 @@ gst_mpeg_parse_get_property (GObject * object, guint prop_id, GValue * value,
case ARG_MAX_DISCONT:
g_value_set_int (value, mpeg_parse->max_discont);
break;
case ARG_DO_ADJUST:
g_value_set_boolean (value, mpeg_parse->do_adjust);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -837,6 +880,10 @@ gst_mpeg_parse_set_property (GObject * object, guint prop_id,
case ARG_MAX_DISCONT:
mpeg_parse->max_discont = g_value_get_int (value);
break;
case ARG_DO_ADJUST:
mpeg_parse->do_adjust = g_value_get_boolean (value);
mpeg_parse->adjust = 0;
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;

13
gst/mpegstream/gstmpegparse.h
View file

@ -61,11 +61,13 @@ struct _GstMPEGParse {
/* pack header values */
guint32 mux_rate;
guint64 current_scr;
guint64 next_scr;
guint64 current_scr; /* Current SCR from the stream. */
guint64 next_scr; /* Expected next SCR. */
guint64 bytes_since_scr;
gint64 adjust;
gboolean do_adjust; /* Adjust timestamps to smooth
discontinuities. */
gint64 adjust; /* Current timestamp adjust value. */
gboolean discont_pending;
gboolean scr_pending;
@ -88,9 +90,12 @@ struct _GstMPEGParseClass {
gboolean (*parse_packet) (GstMPEGParse *parse, GstBuffer *buffer);
gboolean (*parse_pes) (GstMPEGParse *parse, GstBuffer *buffer);
/* process events */
void (*handle_discont) (GstMPEGParse *parse, GstEvent *event);
/* optional method to send out the data */
void (*send_data) (GstMPEGParse *parse, GstData *data, GstClockTime time);
void (*handle_discont) (GstMPEGParse *parse);
void (*send_discont) (GstMPEGParse *parse, GstClockTime time);
};
GType gst_mpeg_parse_get_type(void);

2
gst/mpegstream/gstmpegstream.c
View file

@ -23,6 +23,7 @@
#endif
#include "gstmpegparse.h"
#include "gstmpegdemux.h"
#include "gstdvddemux.h"
#include "gstrfc2250enc.h"
static gboolean
@ -38,6 +39,7 @@ plugin_init (GstPlugin * plugin)
if (!gst_mpeg_parse_plugin_init (plugin) ||
!gst_mpeg_demux_plugin_init (plugin) ||
!gst_dvd_demux_plugin_init (plugin) ||
!gst_rfc2250_enc_plugin_init (plugin))
return FALSE;