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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
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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):

1087
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__ */

974
gst/mpegstream/gstmpegdemux.c
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File diff suppressed because it is too large Load diff

132
gst/mpegstream/gstmpegdemux.h
View file

@ -32,30 +32,80 @@ 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;
};
/* Extended structure to hold additional information for video
streams. */
struct _GstMPEGVideoStream {
GstMPEGStream parent;
gint mpeg_version;
};
struct _GstMPEGDemux {
GstMPEGParse parent;
@ -74,30 +124,64 @@ 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);

139
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->adjust = mpeg_parse->next_scr - scr;
scr = mpeg_parse->next_scr;
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;
GST_DEBUG ("new adjust: %" G_GINT64_FORMAT, mpeg_parse->adjust);
} else {
scr = scr_adj;
}
}
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;