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opusdec: handle NULL packets (used for PLC)

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This commit is contained in:
Vincent Penquerc'h 2011-11-21 11:44:01 +00:00
parent de87d061fc
commit a6ca3673b4
1 changed files with 13 additions and 7 deletions
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10
ext/opus/gstopusdec.c
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@ -244,12 +244,19 @@ opus_dec_chain_parse_data (GstOpusDec * dec, GstBuffer * buf)
size = 0;
}
if (data) {
samples =
opus_packet_get_samples_per_frame (data,
dec->sample_rate) * opus_packet_get_nb_frames (data, size);
packet_size = samples * dec->n_channels * 2;
GST_DEBUG_OBJECT (dec, "bandwidth %d", opus_packet_get_bandwidth (data));
GST_DEBUG_OBJECT (dec, "samples %d", samples);
} else {
/* use maximum size (120 ms) as we do now know in advance how many samples
will be returned */
samples = 120 * dec->sample_rate / 1000;
}
packet_size = samples * dec->n_channels * 2;
res = gst_pad_alloc_buffer_and_set_caps (GST_AUDIO_DECODER_SRC_PAD (dec),
GST_BUFFER_OFFSET_NONE, packet_size,
@ -262,14 +269,13 @@ opus_dec_chain_parse_data (GstOpusDec * dec, GstBuffer * buf)
out_data = (gint16 *) GST_BUFFER_DATA (outbuf);
GST_LOG_OBJECT (dec, "decoding %d samples, in size %u", samples, size);
n = opus_decode (dec->state, data, size, out_data, samples, 0);
if (n < 0) {
GST_ELEMENT_ERROR (dec, STREAM, DECODE, ("Decoding error: %d", n), (NULL));
return GST_FLOW_ERROR;
}
GST_DEBUG_OBJECT (dec, "decoded %d samples", n);
GST_BUFFER_SIZE (outbuf) = n * 2 * dec->n_channels;
res = gst_audio_decoder_finish_frame (GST_AUDIO_DECODER (dec), outbuf, 1);