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celtdec: Handle lookahead, discont

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This commit is contained in:
David Schleef 2009-09-23 13:17:54 -07:00
parent 2390d3a31c
commit 05a1e071b9
2 changed files with 22 additions and 0 deletions
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21
ext/celt/gstceltdec.c
View file

@ -609,6 +609,7 @@ celt_dec_chain_parse_data (GstCeltDec * dec, GstBuffer * buf,
GstBuffer *outbuf;
gint16 *out_data;
gint error = CELT_OK;
int skip = 0;
if (timestamp != -1) {
dec->segment.last_stop = timestamp;
@ -636,6 +637,10 @@ celt_dec_chain_parse_data (GstCeltDec * dec, GstBuffer * buf,
size = 0;
}
if (dec->discont) {
celt_mode_info (dec->mode, CELT_GET_LOOKAHEAD, &skip);
}
res = gst_pad_alloc_buffer_and_set_caps (dec->srcpad,
GST_BUFFER_OFFSET_NONE, dec->frame_size * dec->header.nb_channels * 2,
GST_PAD_CAPS (dec->srcpad), &outbuf);
@ -655,6 +660,14 @@ celt_dec_chain_parse_data (GstCeltDec * dec, GstBuffer * buf,
return GST_FLOW_ERROR;
}
if (skip > 0) {
GST_ERROR ("skipping %d samples", skip);
GST_BUFFER_DATA (outbuf) = GST_BUFFER_DATA (outbuf) +
skip * dec->header.nb_channels * 2;
GST_BUFFER_SIZE (outbuf) = GST_BUFFER_SIZE (outbuf) -
skip * dec->header.nb_channels * 2;
}
if (dec->granulepos == -1) {
if (dec->segment.format != GST_FORMAT_TIME) {
GST_WARNING_OBJECT (dec, "segment not initialized or not TIME format");
@ -672,6 +685,10 @@ celt_dec_chain_parse_data (GstCeltDec * dec, GstBuffer * buf,
gst_util_uint64_scale_int (dec->granulepos - dec->frame_size, GST_SECOND,
dec->header.sample_rate);
GST_BUFFER_DURATION (outbuf) = dec->frame_duration;
if (dec->discont) {
GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT);
dec->discont = 0;
}
dec->granulepos += dec->frame_size;
dec->segment.last_stop += dec->frame_duration;
@ -696,6 +713,10 @@ celt_dec_chain (GstPad * pad, GstBuffer * buf)
dec = GST_CELT_DEC (gst_pad_get_parent (pad));
if (GST_BUFFER_IS_DISCONT (buf)) {
dec->discont = TRUE;
}
if (dec->packetno == 0)
res = celt_dec_chain_parse_header (dec, buf);
else if (dec->packetno == 1)

1
ext/celt/gstceltdec.h
View file

@ -58,6 +58,7 @@ struct _GstCeltDec {
GstSegment segment; /* STREAM LOCK */
gint64 granulepos; /* -1 = needs to be set from current time */
gboolean discont;
};
struct _GstCeltDecClass {