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gst/mpegaudioparse/gstmpegaudioparse.*: Make timestamp handling in mp3parse saner; now works for at least simple cases.

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Original commit message from CVS:
* gst/mpegaudioparse/gstmpegaudioparse.c:
(mp3_type_frame_length_from_header), (gst_mp3parse_reset),
(gst_mp3parse_init), (gst_mp3parse_dispose),
(gst_mp3parse_sink_event), (gst_mp3parse_chain), (head_check),
(gst_mp3parse_change_state):
* gst/mpegaudioparse/gstmpegaudioparse.h:
Make timestamp handling in mp3parse saner; now works for at least
simple cases.
This commit is contained in:
Michael Smith 2006-11-13 17:01:15 +00:00
parent 13ecca8090
commit 3b792adbec
3 changed files with 41 additions and 19 deletions
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11
ChangeLog
View file

@ -1,3 +1,14 @@
2006-11-13 Michael Smith <msmith@fluendo.com>
* gst/mpegaudioparse/gstmpegaudioparse.c:
(mp3_type_frame_length_from_header), (gst_mp3parse_reset),
(gst_mp3parse_init), (gst_mp3parse_dispose),
(gst_mp3parse_sink_event), (gst_mp3parse_chain), (head_check),
(gst_mp3parse_change_state):
* gst/mpegaudioparse/gstmpegaudioparse.h:
Make timestamp handling in mp3parse saner; now works for at least
simple cases.
2006-11-13 Michael Smith <msmith@fluendo.com>
* gst/mpegaudioparse/Makefile.am:

48
gst/mpegaudioparse/gstmpegaudioparse.c
View file

@ -109,13 +109,17 @@ gst_mp3parse_get_type (void)
return mp3parse_type;
}
static guint mp3types_bitrates[2][3][16] =
{ {{0, 32, 64, 96, 128, 160, 192, 224, 256, 288, 320, 352, 384, 416, 448,},
{0, 32, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384,},
{0, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320,}},
{{0, 32, 48, 56, 64, 80, 96, 112, 128, 144, 160, 176, 192, 224, 256,},
{0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160,},
{0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160,}},
static guint mp3types_bitrates[2][3][16] = {
{
{0, 32, 64, 96, 128, 160, 192, 224, 256, 288, 320, 352, 384, 416, 448,},
{0, 32, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384,},
{0, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320,}
},
{
{0, 32, 48, 56, 64, 80, 96, 112, 128, 144, 160, 176, 192, 224, 256,},
{0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160,},
{0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160,}
},
};
static guint mp3types_freqs[3][3] = { {44100, 48000, 32000},
@ -240,6 +244,8 @@ gst_mp3parse_reset (GstMPEGAudioParse * mp3parse)
{
mp3parse->skip = 0;
mp3parse->resyncing = TRUE;
mp3parse->next_ts = -1;
mp3parse->last_ts = -1;
gst_adapter_clear (mp3parse->adapter);
@ -296,11 +302,8 @@ gst_mp3parse_sink_event (GstPad * pad, GstEvent * event)
gst_event_parse_new_segment (event, NULL, NULL, &format, NULL, NULL,
NULL);
if (format != GST_FORMAT_TIME)
mp3parse->next_ts = 0;
else
/* we will be receiving timestamps */
mp3parse->next_ts = -1;
mp3parse->next_ts = -1;
mp3parse->last_ts = -1;
break;
}
default:
@ -331,11 +334,10 @@ gst_mp3parse_chain (GstPad * pad, GstBuffer * buf)
timestamp = GST_BUFFER_TIMESTAMP (buf);
if (GST_CLOCK_TIME_IS_VALID (timestamp)) {
GST_DEBUG_OBJECT (mp3parse, "Using incoming timestamp of %" GST_TIME_FORMAT,
GST_TIME_ARGS (timestamp));
/* If we don't yet have a next timestamp, and this is valid, use it */
if (!GST_CLOCK_TIME_IS_VALID (mp3parse->next_ts) &&
GST_CLOCK_TIME_IS_VALID (timestamp))
mp3parse->next_ts = timestamp;
}
gst_adapter_push (mp3parse->adapter, buf);
@ -441,8 +443,6 @@ gst_mp3parse_chain (GstPad * pad, GstBuffer * buf)
GST_DEBUG_OBJECT (mp3parse, "pushing buffer of %d bytes",
GST_BUFFER_SIZE (outbuf));
GST_BUFFER_TIMESTAMP (outbuf) = mp3parse->next_ts;
/* see http://www.codeproject.com/audio/MPEGAudioInfo.asp */
if (mp3parse->layer == 1)
spf = 384;
@ -456,7 +456,17 @@ gst_mp3parse_chain (GstPad * pad, GstBuffer * buf)
}
GST_BUFFER_DURATION (outbuf) = spf * GST_SECOND / mp3parse->rate;
mp3parse->next_ts += GST_BUFFER_DURATION (outbuf);
if (GST_CLOCK_TIME_IS_VALID (mp3parse->next_ts)) {
GST_BUFFER_TIMESTAMP (outbuf) = mp3parse->next_ts;
mp3parse->next_ts = GST_CLOCK_TIME_NONE;
} else if (GST_CLOCK_TIME_IS_VALID (mp3parse->last_ts)) {
GST_BUFFER_TIMESTAMP (outbuf) = mp3parse->last_ts +
GST_BUFFER_DURATION (outbuf);
} else {
GST_BUFFER_TIMESTAMP (outbuf) = 0;
}
mp3parse->last_ts = GST_BUFFER_TIMESTAMP (outbuf);
gst_buffer_set_caps (outbuf, GST_PAD_CAPS (mp3parse->srcpad));

1
gst/mpegaudioparse/gstmpegaudioparse.h
View file

@ -46,6 +46,7 @@ struct _GstMPEGAudioParse {
GstPad *sinkpad,*srcpad;
GstClockTime last_ts;
GstClockTime next_ts;
GstAdapter *adapter;