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opusenc: update output segment stop time to match clipped samples

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This will let oggmux generate a granpos on the last page that properly
represents the clipped samples at the end of the stream.
This commit is contained in:
Vincent Penquerc'h 2014-06-10 09:33:40 +01:00
parent 193eeb1243
commit 23029acf46
2 changed files with 28 additions and 0 deletions
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27
ext/opus/gstopusenc.c
View file

@ -329,6 +329,7 @@ gst_opus_enc_start (GstAudioEncoder * benc)
GST_DEBUG_OBJECT (enc, "start");
enc->tags = gst_tag_list_new_empty ();
enc->header_sent = FALSE;
enc->encoded_samples = 0;
return TRUE;
}
@ -704,6 +705,9 @@ gst_opus_enc_sink_event (GstAudioEncoder * benc, GstEvent * event)
gst_tag_setter_merge_tags (setter, list, mode);
break;
}
case GST_EVENT_SEGMENT:
enc->encoded_samples = 0;
break;
default:
break;
@ -793,6 +797,8 @@ gst_opus_enc_encode (GstOpusEnc * enc, GstBuffer * buf)
GstMapInfo omap;
gint outsize;
GstBuffer *outbuf;
GstSegment *segment;
GstClockTime duration;
guint max_payload_size;
gint frame_samples;
@ -813,6 +819,26 @@ gst_opus_enc_encode (GstOpusEnc * enc, GstBuffer * buf)
if (G_UNLIKELY (bsize % bytes)) {
GST_DEBUG_OBJECT (enc, "draining; adding silence samples");
/* If encoding part of a frame, and we have no set stop time on
* the output segment, we update the segment stop time to reflect
* the last sample. This will let oggmux set the last page's
* granpos to tell a decoder the dummy samples should be clipped.
*/
segment = &GST_AUDIO_ENCODER_OUTPUT_SEGMENT (enc);
if (!GST_CLOCK_TIME_IS_VALID (segment->stop)) {
int input_samples = bsize / (enc->n_channels * 2);
GST_DEBUG_OBJECT (enc,
"No stop time and partial frame, updating segment");
duration =
gst_util_uint64_scale (enc->encoded_samples + input_samples,
GST_SECOND, enc->sample_rate);
segment->stop = segment->start + duration;
GST_DEBUG_OBJECT (enc, "new output segment %" GST_SEGMENT_FORMAT,
segment);
gst_pad_push_event (GST_AUDIO_ENCODER_SRC_PAD (enc),
gst_event_new_segment (segment));
}
size = ((bsize / bytes) + 1) * bytes;
mdata = g_malloc0 (size);
memcpy (mdata, bdata, bsize);
@ -864,6 +890,7 @@ gst_opus_enc_encode (GstOpusEnc * enc, GstBuffer * buf)
ret =
gst_audio_encoder_finish_frame (GST_AUDIO_ENCODER (enc), outbuf,
frame_samples);
enc->encoded_samples += frame_samples;
done:

1
ext/opus/gstopusenc.h
View file

@ -74,6 +74,7 @@ struct _GstOpusEnc {
gint sample_rate;
gboolean header_sent;
guint64 encoded_samples;
GSList *headers;