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- cleanups

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Original commit message from CVS:
- cleanups
- detect and correct SCR discontinuities, also correct PTSes
This commit is contained in:
Wim Taymans 2002-11-04 23:16:45 +00:00
parent aae92a57bf
commit ebc290ac1d
4 changed files with 315 additions and 250 deletions
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421
gst/mpegstream/gstmpegdemux.c
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@ -202,21 +202,16 @@ gst_mpeg_demux_init (GstMPEGDemux *mpeg_demux)
/* i think everything is already zero'd, but oh well*/ /* i think everything is already zero'd, but oh well*/
for (i=0;i<NUM_PRIVATE_1_PADS;i++) { for (i=0;i<NUM_PRIVATE_1_PADS;i++) {
mpeg_demux->private_1_pad[i] = NULL; mpeg_demux->private_1_pad[i] = NULL;
mpeg_demux->private_1_PTS[i] = 0;
} }
for (i=0;i<NUM_SUBTITLE_PADS;i++) { for (i=0;i<NUM_SUBTITLE_PADS;i++) {
mpeg_demux->subtitle_pad[i] = NULL; mpeg_demux->subtitle_pad[i] = NULL;
mpeg_demux->subtitle_offset[i] = 0;
} }
mpeg_demux->private_2_pad = NULL; mpeg_demux->private_2_pad = NULL;
mpeg_demux->private_2_offset = 0;
for (i=0;i<NUM_VIDEO_PADS;i++) { for (i=0;i<NUM_VIDEO_PADS;i++) {
mpeg_demux->video_pad[i] = NULL; mpeg_demux->video_pad[i] = NULL;
mpeg_demux->video_PTS[i] = 0;
} }
for (i=0;i<NUM_AUDIO_PADS;i++) { for (i=0;i<NUM_AUDIO_PADS;i++) {
mpeg_demux->audio_pad[i] = NULL; mpeg_demux->audio_pad[i] = NULL;
mpeg_demux->audio_PTS[i] = 0;
} }
GST_FLAG_SET (mpeg_demux, GST_ELEMENT_EVENT_AWARE); GST_FLAG_SET (mpeg_demux, GST_ELEMENT_EVENT_AWARE);
@ -225,7 +220,7 @@ gst_mpeg_demux_init (GstMPEGDemux *mpeg_demux)
static void static void
gst_mpeg_demux_send_data (GstMPEGParse *mpeg_parse, GstData *data, GstClockTime time) gst_mpeg_demux_send_data (GstMPEGParse *mpeg_parse, GstData *data, GstClockTime time)
{ {
//GstMPEGDemux *mpeg_demux = GST_MPEG_DEMUX (mpeg_parse); /* GstMPEGDemux *mpeg_demux = GST_MPEG_DEMUX (mpeg_parse); */
if (GST_IS_BUFFER (data)) { if (GST_IS_BUFFER (data)) {
gst_buffer_unref (GST_BUFFER (data)); gst_buffer_unref (GST_BUFFER (data));
@ -245,32 +240,30 @@ static void
gst_mpeg_demux_handle_discont (GstMPEGParse *mpeg_parse) gst_mpeg_demux_handle_discont (GstMPEGParse *mpeg_parse)
{ {
GstMPEGDemux *mpeg_demux = GST_MPEG_DEMUX (mpeg_parse); GstMPEGDemux *mpeg_demux = GST_MPEG_DEMUX (mpeg_parse);
gint i;
gint64 current_time = MPEGTIME_TO_GSTTIME (mpeg_parse->current_scr); gint64 current_time = MPEGTIME_TO_GSTTIME (mpeg_parse->current_scr);
gint i;
GST_DEBUG (GST_CAT_EVENT, "mpegdemux: discont %llu\n", current_time); GST_DEBUG (GST_CAT_EVENT, "discont %llu\n", current_time);
for (i=0;i<NUM_VIDEO_PADS;i++) { for (i=0;i<NUM_VIDEO_PADS;i++) {
if (mpeg_demux->video_pad[i] && if (mpeg_demux->video_pad[i] &&
GST_PAD_IS_CONNECTED (mpeg_demux->video_pad[i])) GST_PAD_IS_USABLE (mpeg_demux->video_pad[i]))
{ {
GstEvent *discont; GstEvent *discont;
discont = gst_event_new_discontinuous (FALSE, GST_FORMAT_TIME, discont = gst_event_new_discontinuous (FALSE, GST_FORMAT_TIME,
current_time, NULL); current_time, NULL);
mpeg_demux->video_PTS[i] = mpeg_parse->current_scr;
gst_pad_push (mpeg_demux->video_pad[i], GST_BUFFER (discont)); gst_pad_push (mpeg_demux->video_pad[i], GST_BUFFER (discont));
} }
if (mpeg_demux->audio_pad[i] && if (mpeg_demux->audio_pad[i] &&
GST_PAD_IS_CONNECTED (mpeg_demux->audio_pad[i])) GST_PAD_IS_USABLE (mpeg_demux->audio_pad[i]))
{ {
GstEvent *discont; GstEvent *discont;
discont = gst_event_new_discontinuous (FALSE, GST_FORMAT_TIME, discont = gst_event_new_discontinuous (FALSE, GST_FORMAT_TIME,
current_time, NULL); current_time, NULL);
mpeg_demux->audio_PTS[i] = mpeg_parse->current_scr;
gst_pad_push (mpeg_demux->audio_pad[i], GST_BUFFER (discont)); gst_pad_push (mpeg_demux->audio_pad[i], GST_BUFFER (discont));
} }
} }
@ -283,7 +276,7 @@ gst_mpeg_demux_parse_packhead (GstMPEGParse *mpeg_parse, GstBuffer *buffer)
parent_class->parse_packhead (mpeg_parse, buffer); parent_class->parse_packhead (mpeg_parse, buffer);
GST_DEBUG (0, "mpeg_demux: in parse_packhead"); GST_DEBUG (0, "in parse_packhead");
buf = GST_BUFFER_DATA (buffer); buf = GST_BUFFER_DATA (buffer);
/* do something usefull here */ /* do something usefull here */
@ -298,13 +291,13 @@ gst_mpeg_demux_parse_syshead (GstMPEGParse *mpeg_parse, GstBuffer *buffer)
guint16 header_length; guint16 header_length;
guchar *buf; guchar *buf;
GST_DEBUG (0, "mpeg_demux: in parse_syshead"); GST_DEBUG (0, "in parse_syshead");
buf = GST_BUFFER_DATA (buffer); buf = GST_BUFFER_DATA (buffer);
buf += 4; buf += 4;
header_length = GUINT16_FROM_BE (*(guint16 *) buf); header_length = GUINT16_FROM_BE (*(guint16 *) buf);
GST_DEBUG (0, "mpeg_demux: header_length %d", header_length); GST_DEBUG (0, "header_length %d", header_length);
buf += 2; buf += 2;
/* marker:1==1 ! rate_bound:22 | marker:1==1*/ /* marker:1==1 ! rate_bound:22 | marker:1==1*/
@ -323,11 +316,10 @@ gst_mpeg_demux_parse_syshead (GstMPEGParse *mpeg_parse, GstBuffer *buffer)
gint stream_count = (header_length - 6) / 3; gint stream_count = (header_length - 6) / 3;
gint i, j=0; gint i, j=0;
GST_DEBUG (0, "mpeg_demux::parse_syshead: number of streams=%d ", GST_DEBUG (0, "number of streams=%d ",
stream_count); stream_count);
for (i = 0; i < stream_count; i++) { for (i = 0; i < stream_count; i++) {
gint stream_num;
guint8 stream_id; guint8 stream_id;
gboolean STD_buffer_bound_scale; gboolean STD_buffer_bound_scale;
guint16 STD_buffer_size_bound; guint16 STD_buffer_size_bound;
@ -338,14 +330,13 @@ gst_mpeg_demux_parse_syshead (GstMPEGParse *mpeg_parse, GstBuffer *buffer)
stream_id = *buf++; stream_id = *buf++;
if (!(stream_id & 0x80)) { if (!(stream_id & 0x80)) {
GST_DEBUG (0, "mpeg_demux::parse_syshead: error in system header length"); GST_DEBUG (0, "error in system header length");
return FALSE; return FALSE;
} }
/* check marker bits */ /* check marker bits */
if ((*buf & 0xC0) != 0xC0) { if ((*buf & 0xC0) != 0xC0) {
GST_DEBUG (0, GST_DEBUG (0, "expecting placeholder bit values '11' after stream id\n");
"mpeg_demux::parse_syshead: expecting placeholder bit values '11' after stream id\n");
return FALSE; return FALSE;
} }
@ -360,41 +351,43 @@ gst_mpeg_demux_parse_syshead (GstMPEGParse *mpeg_parse, GstBuffer *buffer)
buf_byte_size_bound = STD_buffer_size_bound * 1024; buf_byte_size_bound = STD_buffer_size_bound * 1024;
} }
/* private_stream_1 */ switch (stream_id) {
if (stream_id == 0xBD) { /* private_stream_1 */
name = NULL; case 0xBD:
outpad = NULL; name = NULL;
} outpad = NULL;
/* private_stream_2 */ break;
else if (stream_id == 0xBF) { /* private_stream_2 */
name = g_strdup_printf ("private_stream_2"); case 0xBF:
stream_num = 0; name = g_strdup_printf ("private_stream_2");
outpad = &mpeg_demux->private_2_pad; outpad = &mpeg_demux->private_2_pad;
newtemp = GST_PAD_TEMPLATE_GET (private2_factory); newtemp = GST_PAD_TEMPLATE_GET (private2_factory);
} break;
/* Audio */ /* Audio */
else if ((stream_id >= 0xC0) && (stream_id <= 0xDF)) { case 0xC0 ... 0xDF:
name = g_strdup_printf ("audio_%02d", stream_id & 0x1F); name = g_strdup_printf ("audio_%02d", stream_id & 0x1F);
stream_num = stream_id & 0x1F; outpad = &mpeg_demux->audio_pad[stream_id & 0x1F];
outpad = &mpeg_demux->audio_pad[stream_num]; newtemp = GST_PAD_TEMPLATE_GET (audio_factory);
newtemp = GST_PAD_TEMPLATE_GET (audio_factory); break;
} /* Video */
/* Video */ case 0xE0 ... 0xEF:
else if ((stream_id >= 0xE0) && (stream_id <= 0xEF)) { name = g_strdup_printf ("video_%02d", stream_id & 0x0F);
name = g_strdup_printf ("video_%02d", stream_id & 0x0F); outpad = &mpeg_demux->video_pad[stream_id & 0x0F];
stream_num = stream_id & 0x0F; if (!GST_MPEG_PARSE_IS_MPEG2 (mpeg_demux)) {
outpad = &mpeg_demux->video_pad[stream_num]; newtemp = GST_PAD_TEMPLATE_GET (video_mpeg1_factory);
if (!GST_MPEG_PARSE_IS_MPEG2 (mpeg_demux)) { }
newtemp = GST_PAD_TEMPLATE_GET (video_mpeg1_factory); else {
} newtemp = GST_PAD_TEMPLATE_GET (video_mpeg2_factory);
else { }
newtemp = GST_PAD_TEMPLATE_GET (video_mpeg2_factory); break;
} default:
GST_DEBUG (0, "unkown stream id %d", stream_id);
break;
} }
GST_DEBUG (0, "mpeg_demux::parse_syshead: stream ID 0x%02X (%s)", stream_id, name); GST_DEBUG (0, "stream ID 0x%02X (%s)", stream_id, name);
GST_DEBUG (0, "mpeg_demux::parse_syshead: STD_buffer_bound_scale %d", STD_buffer_bound_scale); GST_DEBUG (0, "STD_buffer_bound_scale %d", STD_buffer_bound_scale);
GST_DEBUG (0, "mpeg_demux::parse_syshead: STD_buffer_size_bound %d or %d bytes", GST_DEBUG (0, "STD_buffer_size_bound %d or %d bytes",
STD_buffer_size_bound, buf_byte_size_bound); STD_buffer_size_bound, buf_byte_size_bound);
/* create the pad and add it to self if it does not yet exist /* create the pad and add it to self if it does not yet exist
@ -413,12 +406,14 @@ gst_mpeg_demux_parse_syshead (GstMPEGParse *mpeg_parse, GstBuffer *buffer)
gst_element_add_pad (GST_ELEMENT (mpeg_demux), (*outpad)); gst_element_add_pad (GST_ELEMENT (mpeg_demux), (*outpad));
if (GST_PAD_IS_CONNECTED (*outpad)) { if (GST_PAD_IS_USABLE (*outpad)) {
GstEvent *event; GstEvent *event;
gint64 current_time = MPEGTIME_TO_GSTTIME (mpeg_parse->current_scr); gint64 time;
time = mpeg_parse->current_scr;
event = gst_event_new_discontinuous (FALSE, GST_FORMAT_TIME, event = gst_event_new_discontinuous (FALSE, GST_FORMAT_TIME,
current_time, NULL); MPEGTIME_TO_GSTTIME (time), NULL);
gst_pad_push (*outpad, GST_BUFFER (event)); gst_pad_push (*outpad, GST_BUFFER (event));
} }
@ -462,7 +457,7 @@ gst_mpeg_demux_parse_packet (GstMPEGParse *mpeg_parse, GstBuffer *buffer)
GstBuffer *outbuf; GstBuffer *outbuf;
guint8 *buf, *basebuf; guint8 *buf, *basebuf;
GST_DEBUG (0,"mpeg_demux::parse_packet: in parse_packet"); GST_DEBUG (0, "in parse_packet");
basebuf = buf = GST_BUFFER_DATA (buffer); basebuf = buf = GST_BUFFER_DATA (buffer);
id = *(buf+3); id = *(buf+3);
@ -471,7 +466,7 @@ gst_mpeg_demux_parse_packet (GstMPEGParse *mpeg_parse, GstBuffer *buffer)
/* start parsing */ /* start parsing */
packet_length = GUINT16_FROM_BE (*((guint16 *)buf)); packet_length = GUINT16_FROM_BE (*((guint16 *)buf));
GST_DEBUG (0,"mpeg_demux: got packet_length %d", packet_length); GST_DEBUG (0, "got packet_length %d", packet_length);
headerlen = 2; headerlen = 2;
buf += 2; buf += 2;
@ -483,14 +478,14 @@ gst_mpeg_demux_parse_packet (GstMPEGParse *mpeg_parse, GstBuffer *buffer)
switch (bits & 0xC0) { switch (bits & 0xC0) {
case 0xC0: case 0xC0:
if (bits == 0xff) { if (bits == 0xff) {
GST_DEBUG (0,"mpeg_demux::parse_packet: have stuffing byte"); GST_DEBUG (0, "have stuffing byte");
} else { } else {
GST_DEBUG (0,"mpeg_demux::parse_packet: expected stuffing byte"); GST_DEBUG (0, "expected stuffing byte");
} }
headerlen++; headerlen++;
break; break;
case 0x40: case 0x40:
GST_DEBUG (0,"mpeg_demux::parse_packet: have STD"); GST_DEBUG (0, "have STD");
STD_buffer_bound_scale = bits & 0x20; STD_buffer_bound_scale = bits & 0x20;
STD_buffer_size_bound = (bits & 0x1F) << 8; STD_buffer_size_bound = (bits & 0x1F) << 8;
@ -508,7 +503,7 @@ gst_mpeg_demux_parse_packet (GstMPEGParse *mpeg_parse, GstBuffer *buffer)
pts |= *buf++ << 7; pts |= *buf++ << 7;
pts |= (*buf++ & 0xFE) >> 1; pts |= (*buf++ & 0xFE) >> 1;
GST_DEBUG (0,"mpeg_demux::parse_packet: PTS = %llu", pts); GST_DEBUG (0, "PTS = %llu", pts);
headerlen += 5; headerlen += 5;
goto done; goto done;
case 0x30: case 0x30:
@ -526,14 +521,14 @@ gst_mpeg_demux_parse_packet (GstMPEGParse *mpeg_parse, GstBuffer *buffer)
dts |= *buf++ << 7; dts |= *buf++ << 7;
dts |= (*buf++ & 0xFE) >> 1; dts |= (*buf++ & 0xFE) >> 1;
GST_DEBUG (0,"mpeg_demux::parse_packet: PTS = %llu, DTS = %llu", pts, dts); GST_DEBUG (0, "PTS = %llu, DTS = %llu", pts, dts);
headerlen += 10; headerlen += 10;
goto done; goto done;
case 0x00: case 0x00:
GST_DEBUG (0,"mpeg_demux::parse_packet: have no pts/dts"); GST_DEBUG (0, "have no pts/dts");
GST_DEBUG (0,"mpeg_demux::parse_packet: got trailer bits %x", (bits & 0x0f)); GST_DEBUG (0, "got trailer bits %x", (bits & 0x0f));
if ((bits & 0x0f) != 0xf) { if ((bits & 0x0f) != 0xf) {
GST_DEBUG (0,"mpeg_demux::parse_packet: not a valid packet time sequence"); GST_DEBUG (0, "not a valid packet time sequence");
return FALSE; return FALSE;
} }
headerlen++; headerlen++;
@ -544,73 +539,86 @@ gst_mpeg_demux_parse_packet (GstMPEGParse *mpeg_parse, GstBuffer *buffer)
goto done; goto done;
} }
} while (1); } while (1);
GST_DEBUG (0,"mpeg_demux::parse_packet: done with header loop"); GST_DEBUG (0, "done with header loop");
done: done:
/* calculate the amount of real data in this packet */ /* calculate the amount of real data in this packet */
datalen = packet_length - headerlen+2; datalen = packet_length - headerlen+2;
GST_DEBUG (0,"mpeg_demux::parse_packet: headerlen is %d, datalen is %d", GST_DEBUG (0, "headerlen is %d, datalen is %d",
headerlen,datalen); headerlen,datalen);
/* private_stream_1 */ switch (id) {
if (id == 0xBD) { /* private_stream_1 */
/* first find the track code */ case 0xBD:
ps_id_code = *(basebuf + headerlen); /* first find the track code */
/* make sure it's valid */ ps_id_code = *(basebuf + headerlen);
if ((ps_id_code >= 0x80) && (ps_id_code <= 0x87)) {
GST_DEBUG (0,"mpeg_demux::parse_packet: 0x%02X: we have a private_stream_1 (AC3) packet, track %d", switch (ps_id_code) {
id, ps_id_code - 0x80); /* make sure it's valid */
outpad = &mpeg_demux->private_1_pad[ps_id_code - 0x80]; case 0x80 ... 0x87:
/* scrap first 4 bytes (so-called "mystery AC3 tag") */ GST_DEBUG (0, "0x%02X: we have a private_stream_1 (AC3) packet, track %d",
headerlen += 4; id, ps_id_code - 0x80);
datalen -= 4; outpad = &mpeg_demux->private_1_pad[ps_id_code - 0x80];
} /* scrap first 4 bytes (so-called "mystery AC3 tag") */
/* private_stream_1 */ headerlen += 4;
} else if (id == 0xBF) { datalen -= 4;
GST_DEBUG (0,"mpeg_demux::parse_packet: 0x%02X: we have a private_stream_2 packet", id); break;
outpad = &mpeg_demux->private_2_pad; default:
/* audio */ break;
} else if ((id >= 0xC0) && (id <= 0xDF)) { }
GST_DEBUG (0,"mpeg_demux::parse_packet: 0x%02X: we have an audio packet", id); break;
outpad = &mpeg_demux->audio_pad[id & 0x1F]; /* private_stream_2 */
/* video */ case 0xBF:
} else if ((id >= 0xE0) && (id <= 0xEF)) { GST_DEBUG (0, "0x%02X: we have a private_stream_2 packet", id);
GST_DEBUG (0,"mpeg_demux::parse_packet: 0x%02X: we have a video packet", id); outpad = &mpeg_demux->private_2_pad;
outpad = &mpeg_demux->video_pad[id & 0x0F]; break;
if (pts == -1) /* audio */
pts = mpeg_demux->video_PTS[id & 0x1F]; case 0xC0 ... 0xDF:
else GST_DEBUG (0, "0x%02X: we have an audio packet", id);
mpeg_demux->video_PTS[id & 0x1F] = pts; outpad = &mpeg_demux->audio_pad[id & 0x1F];
break;
/* video */
case 0xE0 ... 0xEF:
GST_DEBUG (0, "0x%02X: we have a video packet", id);
outpad = &mpeg_demux->video_pad[id & 0x0F];
break;
default:
break;
} }
/* if we don't know what it is, bail */ /* if we don't know what it is, bail */
if (outpad == NULL) { if (outpad == NULL) {
GST_DEBUG (0,"mpeg_demux::parse_packet: unknown packet id 0x%02X !!", id); GST_DEBUG (0, "unknown packet id 0x%02X !!", id);
return FALSE; return FALSE;
} }
/* FIXME, this should be done in parse_syshead */ /* the pad should have been created in parse_syshead */
if ((*outpad) == NULL) { if ((*outpad) == NULL) {
GST_DEBUG (0,"mpeg_demux::parse_packet: unexpected packet id 0x%02X!!", id); GST_DEBUG (0, "unexpected packet id 0x%02X!!", id);
return FALSE; return FALSE;
} }
/* create the buffer and send it off to the Other Side */ /* create the buffer and send it off to the Other Side */
if (GST_PAD_IS_CONNECTED(*outpad) && datalen > 0) { if (GST_PAD_IS_CONNECTED(*outpad) && datalen > 0) {
GST_DEBUG (0, "creating subbuffer len %d", datalen);
/* if this is part of the buffer, create a subbuffer */ /* if this is part of the buffer, create a subbuffer */
GST_DEBUG (0,"mpeg_demux::parse_packet: creating subbuffer len %d", datalen); outbuf = gst_buffer_create_sub (buffer, headerlen + 4, datalen);
outbuf = gst_buffer_create_sub (buffer, headerlen+4, datalen);
/* attach pts, if any */
if (pts != -1) { if (pts != -1) {
GST_BUFFER_TIMESTAMP (outbuf) = (pts * GST_SECOND)/90000LL; pts += mpeg_parse->adjust;
GST_BUFFER_TIMESTAMP (outbuf) = MPEGTIME_TO_GSTTIME (pts);
} }
else { else {
GST_BUFFER_TIMESTAMP (outbuf) = -1LL; GST_BUFFER_TIMESTAMP (outbuf) = -1LL;
} }
GST_DEBUG (0,"mpeg_demux::parse_packet: pushing buffer of len %d id %d, ts %lld", GST_DEBUG (0, "pushing buffer of len %d id %d, ts %lld",
datalen, id, GST_BUFFER_TIMESTAMP (outbuf)); datalen, id, GST_BUFFER_TIMESTAMP (outbuf));
gst_pad_push ((*outpad), outbuf); gst_pad_push ((*outpad), outbuf);
} }
@ -636,7 +644,7 @@ gst_mpeg_demux_parse_pes (GstMPEGParse *mpeg_parse, GstBuffer *buffer)
GstPadTemplate *newtemp = NULL; GstPadTemplate *newtemp = NULL;
guint8 *buf, *basebuf; guint8 *buf, *basebuf;
GST_DEBUG (0,"mpeg_demux: in parse_pes"); GST_DEBUG (0, "in parse_pes");
basebuf = buf = GST_BUFFER_DATA (buffer); basebuf = buf = GST_BUFFER_DATA (buffer);
id = *(buf+3); id = *(buf+3);
@ -645,7 +653,7 @@ gst_mpeg_demux_parse_pes (GstMPEGParse *mpeg_parse, GstBuffer *buffer)
/* start parsing */ /* start parsing */
packet_length = GUINT16_FROM_BE (*((guint16 *)buf)); packet_length = GUINT16_FROM_BE (*((guint16 *)buf));
GST_DEBUG (0,"mpeg_demux: got packet_length %d", packet_length); GST_DEBUG (0, "got packet_length %d", packet_length);
buf += 2; buf += 2;
/* we don't operate on: program_stream_map, padding_stream, */ /* we don't operate on: program_stream_map, padding_stream, */
@ -662,7 +670,7 @@ gst_mpeg_demux_parse_pes (GstMPEGParse *mpeg_parse, GstBuffer *buffer)
header_data_length = *buf++; header_data_length = *buf++;
GST_DEBUG (0,"mpeg_demux: header_data_length is %d",header_data_length); GST_DEBUG (0, "header_data_length is %d",header_data_length);
/* check for PTS */ /* check for PTS */
if ((flags2 & 0x80)) { if ((flags2 & 0x80)) {
@ -672,14 +680,17 @@ gst_mpeg_demux_parse_pes (GstMPEGParse *mpeg_parse, GstBuffer *buffer)
pts |= (*buf++ & 0xFE) << 14; pts |= (*buf++ & 0xFE) << 14;
pts |= *buf++ << 7; pts |= *buf++ << 7;
pts |= (*buf++ & 0xFE) >> 1; pts |= (*buf++ & 0xFE) >> 1;
GST_DEBUG (0, "mpeg_demux::parse_packet: %x PTS = %llu", id, (pts*GST_SECOND)/90000LL);
GST_DEBUG (0, "%x PTS = %llu",
id, MPEGTIME_TO_GSTTIME (pts));
} }
if ((flags2 & 0x40)) { if ((flags2 & 0x40)) {
GST_DEBUG (0, "mpeg_demux::parse_packet: %x DTS found", id); GST_DEBUG (0, "%x DTS found", id);
buf += 5; buf += 5;
} }
if ((flags2 & 0x20)) { if ((flags2 & 0x20)) {
GST_DEBUG (0, "mpeg_demux::parse_packet: %x ESCR found", id); GST_DEBUG (0, "%x ESCR found", id);
buf += 6; buf += 6;
} }
if ((flags2 & 0x10)) { if ((flags2 & 0x10)) {
@ -688,7 +699,7 @@ gst_mpeg_demux_parse_pes (GstMPEGParse *mpeg_parse, GstBuffer *buffer)
es_rate = (*buf++ & 0x07) << 14; es_rate = (*buf++ & 0x07) << 14;
es_rate |= (*buf++ ) << 7; es_rate |= (*buf++ ) << 7;
es_rate |= (*buf++ & 0xFE) >> 1; es_rate |= (*buf++ & 0xFE) >> 1;
GST_DEBUG (0, "mpeg_demux::parse_packet: %x ES Rate found", id); GST_DEBUG (0, "%x ES Rate found", id);
} }
/* FIXME: lots of PES parsing missing here... */ /* FIXME: lots of PES parsing missing here... */
@ -699,57 +710,55 @@ gst_mpeg_demux_parse_pes (GstMPEGParse *mpeg_parse, GstBuffer *buffer)
headerlen = 5 + header_data_length; headerlen = 5 + header_data_length;
/* constant is 2 bytes of bits, 1 byte header len */ /* constant is 2 bytes of bits, 1 byte header len */
datalen = packet_length - (3 + header_data_length); datalen = packet_length - (3 + header_data_length);
GST_DEBUG (0,"mpeg_demux: headerlen is %d, datalen is %d", GST_DEBUG (0, "headerlen is %d, datalen is %d",
headerlen, datalen); headerlen, datalen);
/* private_stream_1 */ switch (id) {
if (id == 0xBD) { /* private_stream_1 */
/* first find the track code */ case 0xBD:
ps_id_code = *(basebuf + headerlen + 4); /* first find the track code */
/* make sure it's valid */ ps_id_code = *(basebuf + headerlen + 4);
if ((ps_id_code >= 0x80) && (ps_id_code <= 0x87)) {
GST_DEBUG (0,"mpeg_demux: we have a private_stream_1 (AC3) packet, track %d", switch (ps_id_code) {
ps_id_code - 0x80); case 0x80 ... 0x87:
outpad = &mpeg_demux->private_1_pad[ps_id_code - 0x80]; GST_DEBUG (0, "we have a private_stream_1 (AC3) packet, track %d",
/* scrap first 4 bytes (so-called "mystery AC3 tag") */ ps_id_code - 0x80);
headerlen += 4; outpad = &mpeg_demux->private_1_pad[ps_id_code - 0x80];
datalen -= 4; /* scrap first 4 bytes (so-called "mystery AC3 tag") */
if (pts == -1) headerlen += 4;
pts = mpeg_demux->private_1_PTS[ps_id_code - 0x80]; datalen -= 4;
else break;
mpeg_demux->private_1_PTS[ps_id_code - 0x80] = pts; case 0x20 ... 0x2f:
} GST_DEBUG (0, "we have a subtitle_stream packet, track %d",
else if ((ps_id_code >= 0x20) && (ps_id_code <= 0x2f)) { ps_id_code - 0x20);
GST_DEBUG (0,"mpeg_demux: we have a subtitle_stream packet, track %d", outpad = &mpeg_demux->subtitle_pad[ps_id_code - 0x20];
ps_id_code - 0x20); headerlen += 1;
outpad = &mpeg_demux->subtitle_pad[ps_id_code - 0x20]; datalen -= 1;
headerlen += 1; break;
datalen -= 1; default:
} GST_DEBUG (0, "0x%02X: unkonwn id %x",
else { id, ps_id_code);
GST_DEBUG (0,"mpeg_demux::parse_packet: 0x%02X: unkonwn id %x", break;
id, ps_id_code); }
} break;
/* private_stream_1 */ /* private_stream_2 */
} else if (id == 0xBF) { case 0xBF:
GST_DEBUG (0,"mpeg_demux: we have a private_stream_2 packet"); GST_DEBUG (0, "we have a private_stream_2 packet");
outpad = &mpeg_demux->private_2_pad; outpad = &mpeg_demux->private_2_pad;
/* audio */ break;
} else if ((id >= 0xC0) && (id <= 0xDF)) { /* audio */
GST_DEBUG (0,"mpeg_demux: we have an audio packet"); case 0xC0 ... 0xDF:
outpad = &mpeg_demux->audio_pad[id - 0xC0]; GST_DEBUG (0, "we have an audio packet");
if (pts == -1) outpad = &mpeg_demux->audio_pad[id - 0xC0];
pts = mpeg_demux->audio_PTS[id & 0x1F]; break;
else /* video */
mpeg_demux->audio_PTS[id & 0x1F] = pts; case 0xE0 ... 0xEF:
/* video */ GST_DEBUG (0, "we have a video packet");
} else if ((id >= 0xE0) && (id <= 0xEF)) { outpad = &mpeg_demux->video_pad[id - 0xE0];
GST_DEBUG (0,"mpeg_demux: we have a video packet"); break;
outpad = &mpeg_demux->video_pad[id - 0xE0]; default:
if (pts == -1) GST_DEBUG (0, "we have a unkown packet");
pts = mpeg_demux->video_PTS[id & 0x1F]; break;
else
mpeg_demux->video_PTS[id & 0x1F] = pts;
} }
/* if we don't know what it is, bail */ /* if we don't know what it is, bail */
@ -763,35 +772,44 @@ gst_mpeg_demux_parse_pes (GstMPEGParse *mpeg_parse, GstBuffer *buffer)
gchar *name = NULL; gchar *name = NULL;
/* we have to name the stream approriately */ /* we have to name the stream approriately */
if (id == 0xBD) { switch (id) {
if (ps_id_code >= 0x80 && ps_id_code <= 0x87) { /* private_stream_1 */
name = g_strdup_printf("private_stream_1.%d",ps_id_code - 0x80); case 0xBD:
newtemp = GST_PAD_TEMPLATE_GET (private1_factory); switch (ps_id_code) {
} case 0x80 ... 0x87:
else if (ps_id_code >= 0x20 && ps_id_code <= 0x2f) { name = g_strdup_printf ("private_stream_1.%d",ps_id_code - 0x80);
name = g_strdup_printf("subtitle_stream_%d",ps_id_code - 0x20); newtemp = GST_PAD_TEMPLATE_GET (private1_factory);
newtemp = GST_PAD_TEMPLATE_GET (subtitle_factory); break;
} case 0x20 ... 0x2F:
else { name = g_strdup_printf ("subtitle_stream_%d",ps_id_code - 0x20);
name = g_strdup_printf("unknown_stream_%d",ps_id_code); newtemp = GST_PAD_TEMPLATE_GET (subtitle_factory);
} break;
default:
name = g_strdup_printf ("unknown_stream_%d",ps_id_code);
break;
}
break;
/* private_stream_2 */
case 0xBF:
name = g_strdup ("private_stream_2");
newtemp = GST_PAD_TEMPLATE_GET (private2_factory);
break;
/* audio */
case 0xC0 ... 0xDF:
name = g_strdup_printf ("audio_%02d", id - 0xC0);
newtemp = GST_PAD_TEMPLATE_GET (audio_factory);
break;
/* video */
case 0xE0 ... 0xEF:
name = g_strdup_printf ("video_%02d", id - 0xE0);
newtemp = GST_PAD_TEMPLATE_GET (video_mpeg2_factory);
break;
/* unkown */
default:
name = g_strdup_printf ("unknown");
break;
} }
else if (id == 0xBF) {
name = g_strdup ("private_stream_2");
newtemp = GST_PAD_TEMPLATE_GET (private2_factory);
}
else if ((id >= 0xC0) && (id <= 0xDF)) {
name = g_strdup_printf("audio_%02d",id - 0xC0);
newtemp = GST_PAD_TEMPLATE_GET (audio_factory);
}
else if ((id >= 0xE0) && (id <= 0xEF)) {
name = g_strdup_printf("video_%02d",id - 0xE0);
newtemp = GST_PAD_TEMPLATE_GET (video_mpeg2_factory);
}
else {
name = g_strdup_printf("unknown");
}
if (newtemp) { if (newtemp) {
/* create the pad and add it to self */ /* create the pad and add it to self */
(*outpad) = gst_pad_new_from_template (newtemp, name); (*outpad) = gst_pad_new_from_template (newtemp, name);
@ -806,19 +824,27 @@ gst_mpeg_demux_parse_pes (GstMPEGParse *mpeg_parse, GstBuffer *buffer)
gst_element_add_pad(GST_ELEMENT(mpeg_demux),(*outpad)); gst_element_add_pad(GST_ELEMENT(mpeg_demux),(*outpad));
} }
else { else {
g_warning ("mpeg_demux: cannot create pad %s, no template for %02x", name, id); g_warning ("cannot create pad %s, no template for %02x", name, id);
} }
if (name) if (name)
g_free (name); g_free (name);
} }
/* create the buffer and send it off to the Other Side */ /* create the buffer and send it off to the Other Side */
if (GST_PAD_IS_CONNECTED(*outpad)) { if (GST_PAD_IS_USABLE(*outpad)) {
/* if this is part of the buffer, create a subbuffer */ /* if this is part of the buffer, create a subbuffer */
GST_DEBUG (0,"mpeg_demux: creating subbuffer len %d", datalen); GST_DEBUG (0,"creating subbuffer len %d", datalen);
outbuf = gst_buffer_create_sub (buffer, headerlen+4, datalen); outbuf = gst_buffer_create_sub (buffer, headerlen+4, datalen);
GST_BUFFER_TIMESTAMP(outbuf) = (pts * GST_SECOND) / 90000LL;
if (pts != -1) {
pts += mpeg_parse->adjust;
GST_BUFFER_TIMESTAMP (outbuf) = MPEGTIME_TO_GSTTIME (pts);
}
else {
GST_BUFFER_TIMESTAMP (outbuf) = -1LL;
}
gst_pad_push((*outpad),outbuf); gst_pad_push((*outpad),outbuf);
} }
@ -829,19 +855,12 @@ gst_mpeg_demux_parse_pes (GstMPEGParse *mpeg_parse, GstBuffer *buffer)
static GstElementStateReturn static GstElementStateReturn
gst_mpeg_demux_change_state (GstElement *element) gst_mpeg_demux_change_state (GstElement *element)
{ {
GstMPEGDemux *mpeg_demux = GST_MPEG_DEMUX (element); /* GstMPEGDemux *mpeg_demux = GST_MPEG_DEMUX (element); */
gint i;
switch (GST_STATE_TRANSITION (element)) { switch (GST_STATE_TRANSITION (element)) {
case GST_STATE_READY_TO_PAUSED: case GST_STATE_READY_TO_PAUSED:
break; break;
case GST_STATE_PAUSED_TO_READY: case GST_STATE_PAUSED_TO_READY:
for (i=0;i<NUM_VIDEO_PADS;i++) {
mpeg_demux->video_PTS[i] = 0;
}
for (i=0;i<NUM_AUDIO_PADS;i++) {
mpeg_demux->audio_PTS[i] = 0;
}
break; break;
case GST_STATE_READY_TO_NULL: case GST_STATE_READY_TO_NULL:
break; break;

10
gst/mpegstream/gstmpegdemux.h
View file

@ -99,20 +99,10 @@ struct _GstMPEGDemux {
/* stream output pads */ /* stream output pads */
GstPad *private_1_pad[NUM_PRIVATE_1_PADS]; /* up to 8 ac3 audio tracks */ GstPad *private_1_pad[NUM_PRIVATE_1_PADS]; /* up to 8 ac3 audio tracks */
gulong private_1_PTS[NUM_PRIVATE_1_PADS];
GstPad *subtitle_pad[NUM_SUBTITLE_PADS]; GstPad *subtitle_pad[NUM_SUBTITLE_PADS];
gulong subtitle_offset[NUM_SUBTITLE_PADS];
GstPad *private_2_pad; GstPad *private_2_pad;
gulong private_2_offset;
GstPad *video_pad[NUM_VIDEO_PADS]; GstPad *video_pad[NUM_VIDEO_PADS];
gint64 video_PTS[NUM_VIDEO_PADS];
GstPad *audio_pad[NUM_AUDIO_PADS]; GstPad *audio_pad[NUM_AUDIO_PADS];
gint64 audio_PTS[NUM_AUDIO_PADS];
}; };
struct _GstMPEGDemuxClass { struct _GstMPEGDemuxClass {

125
gst/mpegstream/gstmpegparse.c
View file

@ -174,11 +174,12 @@ gst_mpeg_parse_init (GstMPEGParse *mpeg_parse)
/* initialize parser state */ /* initialize parser state */
mpeg_parse->packetize = NULL; mpeg_parse->packetize = NULL;
mpeg_parse->current_scr = 0; mpeg_parse->current_scr = 0;
mpeg_parse->previous_scr = 0; mpeg_parse->bytes_since_scr = 0;
mpeg_parse->adjust = 0;
mpeg_parse->sync = FALSE; mpeg_parse->sync = FALSE;
/* zero counters (should be done at RUNNING?) */ /* zero counters (should be done at RUNNING?) */
mpeg_parse->bit_rate = 0; mpeg_parse->mux_rate = 0;
mpeg_parse->discont_pending = FALSE; mpeg_parse->discont_pending = FALSE;
mpeg_parse->scr_pending = TRUE; mpeg_parse->scr_pending = TRUE;
mpeg_parse->provided_clock = gst_mpeg_clock_new ("MPEGParseClock", mpeg_parse->provided_clock = gst_mpeg_clock_new ("MPEGParseClock",
@ -212,7 +213,7 @@ gst_mpeg_parse_get_time (GstClock *clock, gpointer data)
{ {
GstMPEGParse *parse = GST_MPEG_PARSE (data); GstMPEGParse *parse = GST_MPEG_PARSE (data);
return MPEGTIME_TO_GSTTIME (parse->previous_scr); return MPEGTIME_TO_GSTTIME (parse->current_scr);
} }
static void static void
@ -242,9 +243,12 @@ gst_mpeg_parse_send_data (GstMPEGParse *mpeg_parse, GstData *data, GstClockTime
} }
GST_BUFFER_TIMESTAMP (data) = time; GST_BUFFER_TIMESTAMP (data) = time;
GST_DEBUG (0, "mpeg_parse: current_scr %lld", time); GST_DEBUG (0, "current_scr %lld", time);
gst_pad_push (mpeg_parse->srcpad, GST_BUFFER (data)); if (GST_PAD_IS_USABLE (mpeg_parse->srcpad))
gst_pad_push (mpeg_parse->srcpad, GST_BUFFER (data));
else
gst_data_unref (data);
} }
} }
@ -256,18 +260,21 @@ gst_mpeg_parse_handle_discont (GstMPEGParse *mpeg_parse)
event = gst_event_new_discontinuous (FALSE, GST_FORMAT_TIME, event = gst_event_new_discontinuous (FALSE, GST_FORMAT_TIME,
MPEGTIME_TO_GSTTIME (mpeg_parse->current_scr), NULL); MPEGTIME_TO_GSTTIME (mpeg_parse->current_scr), NULL);
gst_pad_push (mpeg_parse->srcpad, GST_BUFFER (event)); if (GST_PAD_IS_USABLE (mpeg_parse->srcpad))
gst_pad_push (mpeg_parse->srcpad, GST_BUFFER (event));
else
gst_event_unref (event);
} }
static gboolean static gboolean
gst_mpeg_parse_parse_packhead (GstMPEGParse *mpeg_parse, GstBuffer *buffer) gst_mpeg_parse_parse_packhead (GstMPEGParse *mpeg_parse, GstBuffer *buffer)
{ {
guint8 *buf; guint8 *buf;
guint64 scr; guint64 scr, scr_adj;
guint32 scr1, scr2; guint32 scr1, scr2;
guint32 new_rate; guint32 new_rate;
GST_DEBUG (0, "mpeg_parse: in parse_packhead"); GST_DEBUG (0, "in parse_packhead");
buf = GST_BUFFER_DATA (buffer); buf = GST_BUFFER_DATA (buffer);
buf += 4; buf += 4;
@ -276,51 +283,74 @@ gst_mpeg_parse_parse_packhead (GstMPEGParse *mpeg_parse, GstBuffer *buffer)
scr2 = GUINT32_FROM_BE (*(guint32*) (buf+4)); scr2 = GUINT32_FROM_BE (*(guint32*) (buf+4));
if (GST_MPEG_PACKETIZE_IS_MPEG2 (mpeg_parse->packetize)) { if (GST_MPEG_PACKETIZE_IS_MPEG2 (mpeg_parse->packetize)) {
guint32 scr_ext;
/* :2=01 ! scr:3 ! marker:1==1 ! scr:15 ! marker:1==1 ! scr:15 */ /* :2=01 ! scr:3 ! marker:1==1 ! scr:15 ! marker:1==1 ! scr:15 */
scr = (scr1 & 0x38000000) << 3; scr = (scr1 & 0x38000000) << 3;
scr |= (scr1 & 0x03fff800) << 4; scr |= (scr1 & 0x03fff800) << 4;
scr |= (scr1 & 0x000003ff) << 5; scr |= (scr1 & 0x000003ff) << 5;
scr |= (scr2 & 0xf8000000) >> 27; scr |= (scr2 & 0xf8000000) >> 27;
scr_ext = (scr2 & 0x03fe0000) >> 17;
scr = (scr * 300 + scr_ext % 300) / 300;
GST_DEBUG (0, "%lld %d, %08x %08x %lld diff: %lld",
scr, scr_ext, scr1, scr2, mpeg_parse->bytes_since_scr,
scr - mpeg_parse->current_scr);
mpeg_parse->bytes_since_scr = 0;
buf += 6; buf += 6;
new_rate = (GUINT32_FROM_BE ((*(guint32 *) buf)) & 0xfffffc00) >> 10; new_rate = (GUINT32_FROM_BE ((*(guint32 *) buf)) & 0xfffffc00) >> 10;
//new_rate *= 133; /* FIXME trial and error */
new_rate *= 223; /* FIXME trial and error */
} }
else { else {
scr = (scr1 & 0x0e000000) << 5; scr = (scr1 & 0x0e000000) << 5;
scr |= (scr1 & 0x00fffe00) << 6; scr |= (scr1 & 0x00fffe00) << 6;
scr |= (scr1 & 0x000000ff) << 7; scr |= (scr1 & 0x000000ff) << 7;
scr |= (scr2 & 0xfe000000) >> 25; scr |= (scr2 & 0xfe000000) >> 25;
mpeg_parse->bytes_since_scr = 0;
buf += 5; buf += 5;
new_rate = (GUINT32_FROM_BE ((*(guint32 *) buf)) & 0x7ffffe00) >> 9; new_rate = (GUINT32_FROM_BE ((*(guint32 *) buf)) & 0x7ffffe00) >> 9;
new_rate *= 400;
} }
mpeg_parse->previous_scr = mpeg_parse->current_scr; scr_adj = scr + mpeg_parse->adjust;
GST_DEBUG (0, "SCR is %llu (%llu) next: %lld (%lld) diff: %lld (%lld)",
scr,
MPEGTIME_TO_GSTTIME (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));
if (ABS ((gint64)mpeg_parse->next_scr - (gint64)(scr_adj)) > 10000) {
GST_DEBUG (0, "discontinuity detected; expected: %llu got: %llu real:%lld adjust:%lld",
mpeg_parse->next_scr, scr_adj, scr, mpeg_parse->adjust);
mpeg_parse->adjust = mpeg_parse->next_scr - scr;
scr = mpeg_parse->next_scr;
GST_DEBUG (0, "new adjust: %lld", mpeg_parse->adjust);
}
else {
scr = scr_adj;
}
mpeg_parse->current_scr = scr; mpeg_parse->current_scr = scr;
GST_DEBUG (0, "mpeg_parse: SCR is %llu (%llu)", scr,
MPEGTIME_TO_GSTTIME (mpeg_parse->current_scr));
if (mpeg_parse->previous_scr > mpeg_parse->current_scr) {
GST_DEBUG (0, "mpeg_parse: discontinuity detected %llu (%llu)",
mpeg_parse->previous_scr, mpeg_parse->current_scr);
mpeg_parse->discont_pending = TRUE;
}
mpeg_parse->scr_pending = FALSE; mpeg_parse->scr_pending = FALSE;
if (mpeg_parse->bit_rate != new_rate) { if (mpeg_parse->mux_rate != new_rate) {
mpeg_parse->bit_rate = new_rate; mpeg_parse->mux_rate = new_rate;
g_object_notify (G_OBJECT (mpeg_parse), "bitrate"); g_object_notify (G_OBJECT (mpeg_parse), "bitrate");
} }
GST_DEBUG (0, "mpeg_parse: stream is %1.3fMbs", GST_DEBUG (0, "stream is %1.3fMbs", (mpeg_parse->mux_rate * 400) / 1000000.0);
(mpeg_parse->bit_rate) / 1000000.0);
return TRUE; return TRUE;
} }
@ -342,7 +372,7 @@ gst_mpeg_parse_loop (GstElement *element)
if (GST_IS_BUFFER (data)) { if (GST_IS_BUFFER (data)) {
GstBuffer *buffer = GST_BUFFER (data); GstBuffer *buffer = GST_BUFFER (data);
GST_DEBUG (0, "mpeg2demux: have chunk 0x%02X", id); GST_DEBUG (0, "have chunk 0x%02X", id);
switch (id) { switch (id) {
case 0xba: case 0xba:
@ -357,7 +387,7 @@ gst_mpeg_parse_loop (GstElement *element)
break; break;
default: default:
if (mpeg2 && ((id < 0xBD) || (id > 0xFE))) { if (mpeg2 && ((id < 0xBD) || (id > 0xFE))) {
g_warning ("mpeg2demux: ******** unknown id 0x%02X", id); g_warning ("******** unknown id 0x%02X", id);
} }
else { else {
if (mpeg2) { if (mpeg2) {
@ -415,8 +445,12 @@ gst_mpeg_parse_loop (GstElement *element)
} }
gst_buffer_unref (GST_BUFFER (data)); gst_buffer_unref (GST_BUFFER (data));
return; return;
} }
size = GST_BUFFER_SIZE (data);
mpeg_parse->bytes_since_scr += size;
if (CLASS (mpeg_parse)->send_data) if (CLASS (mpeg_parse)->send_data)
CLASS (mpeg_parse)->send_data (mpeg_parse, data, time); CLASS (mpeg_parse)->send_data (mpeg_parse, data, time);
@ -425,10 +459,29 @@ gst_mpeg_parse_loop (GstElement *element)
gst_element_clock_wait (GST_ELEMENT (mpeg_parse), mpeg_parse->clock, time, NULL); gst_element_clock_wait (GST_ELEMENT (mpeg_parse), mpeg_parse->clock, time, NULL);
} }
size = GST_BUFFER_SIZE (data); {
guint64 scr, bss, br;
/* we are interpolating the scr here */
/* mpeg_parse->current_scr += ((size * 90000LL) / (mpeg_parse->bit_rate)); */ scr = mpeg_parse->current_scr;
bss = mpeg_parse->bytes_since_scr;
br = mpeg_parse->mux_rate * 50;
if (GST_MPEG_PACKETIZE_IS_MPEG2 (mpeg_parse->packetize)) {
/*
* The mpeg spec says something like this, but that doesn't really work:
*
* mpeg_parse->next_scr = (scr * br + bss * 90000LL) / (90000LL + br);
*/
mpeg_parse->next_scr = scr + (bss * 90000LL) / br;
}
else {
/* we are interpolating the scr here */
mpeg_parse->next_scr = scr + (bss * 90000LL) / br;
}
GST_DEBUG (0, "size: %lld, total since SCR: %lld, next SCR: %lld",
size, bss, mpeg_parse->next_scr);
}
} }
} }
@ -472,7 +525,7 @@ gst_mpeg_parse_handle_src_query (GstPad *pad, GstPadQueryType type,
GstFormat peer_format; GstFormat peer_format;
gint64 peer_value; gint64 peer_value;
if (mpeg_parse->bit_rate == 0) if (mpeg_parse->mux_rate == 0)
return FALSE; return FALSE;
peer_format = GST_FORMAT_BYTES; peer_format = GST_FORMAT_BYTES;
@ -480,7 +533,7 @@ gst_mpeg_parse_handle_src_query (GstPad *pad, GstPadQueryType type,
GST_PAD_QUERY_TOTAL, &peer_format, &peer_value)) GST_PAD_QUERY_TOTAL, &peer_format, &peer_value))
{ {
/* multiply bywith 8 because vbr is in bits/second */ /* multiply bywith 8 because vbr is in bits/second */
*value = peer_value * 8 * GST_SECOND / mpeg_parse->bit_rate; *value = peer_value * GST_SECOND / (mpeg_parse->mux_rate * 50);
} }
else else
res = FALSE; res = FALSE;
@ -543,7 +596,7 @@ gst_mpeg_parse_handle_src_event (GstPad *pad, GstEvent *event)
if (GST_EVENT_SEEK_FLAGS (event) & GST_SEEK_FLAG_FLUSH) { if (GST_EVENT_SEEK_FLAGS (event) & GST_SEEK_FLAG_FLUSH) {
} }
desired_offset = mpeg_parse->bit_rate * GST_EVENT_SEEK_OFFSET (event) / (8 * GST_SECOND); desired_offset = mpeg_parse->mux_rate * 50 * GST_EVENT_SEEK_OFFSET (event) / (GST_SECOND);
if (!gst_bytestream_seek (mpeg_parse->packetize->bs, desired_offset, GST_SEEK_METHOD_SET)) { if (!gst_bytestream_seek (mpeg_parse->packetize->bs, desired_offset, GST_SEEK_METHOD_SET)) {
gst_event_unref (event); gst_event_unref (event);
@ -596,7 +649,7 @@ gst_mpeg_parse_get_property (GObject *object, guint prop_id, GValue *value, GPar
switch (prop_id) { switch (prop_id) {
case ARG_BIT_RATE: case ARG_BIT_RATE:
g_value_set_uint (value, mpeg_parse->bit_rate); g_value_set_uint (value, mpeg_parse->mux_rate * 400);
break; break;
case ARG_MPEG2: case ARG_MPEG2:
if (mpeg_parse->packetize) if (mpeg_parse->packetize)

9
gst/mpegstream/gstmpegparse.h
View file

@ -46,7 +46,7 @@ extern "C" {
#define GST_MPEG_PARSE_IS_MPEG2(parse) (GST_MPEG_PACKETIZE_IS_MPEG2 (GST_MPEG_PARSE (parse)->packetize)) #define GST_MPEG_PARSE_IS_MPEG2(parse) (GST_MPEG_PACKETIZE_IS_MPEG2 (GST_MPEG_PARSE (parse)->packetize))
#define MPEGTIME_TO_GSTTIME(time) (((time) * GST_SECOND) / 90000LL) #define MPEGTIME_TO_GSTTIME(time) (((time) * (GST_MSECOND/10)) / 9LL)
typedef struct _GstMPEGParse GstMPEGParse; typedef struct _GstMPEGParse GstMPEGParse;
typedef struct _GstMPEGParseClass GstMPEGParseClass; typedef struct _GstMPEGParseClass GstMPEGParseClass;
@ -59,9 +59,12 @@ struct _GstMPEGParse {
GstMPEGPacketize *packetize; GstMPEGPacketize *packetize;
/* pack header values */ /* pack header values */
guint32 bit_rate; guint32 mux_rate;
guint64 current_scr; guint64 current_scr;
guint64 previous_scr; guint64 next_scr;
guint64 bytes_since_scr;
gint64 adjust;
gboolean discont_pending; gboolean discont_pending;
gboolean scr_pending; gboolean scr_pending;