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lavd/openal: don't return zero sized packet if no samples are available

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Signed-off-by: Marton Balint <cus@passwd.hu>
This commit is contained in:
Marton Balint 2016-09-30 11:08:51 +02:00
parent 2face3e7b5
commit fbf8ac7d2a
1 changed files with 10 additions and 3 deletions
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13
libavdevice/openal-dec.c
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@ -187,9 +187,16 @@ static int read_packet(AVFormatContext* ctx, AVPacket *pkt)
const char *error_msg; const char *error_msg;
ALCint nb_samples; ALCint nb_samples;
/* Get number of samples available */ for (;;) {
alcGetIntegerv(ad->device, ALC_CAPTURE_SAMPLES, (ALCsizei) sizeof(ALCint), &nb_samples); /* Get number of samples available */
if (error = al_get_error(ad->device, &error_msg)) goto fail; alcGetIntegerv(ad->device, ALC_CAPTURE_SAMPLES, (ALCsizei) sizeof(ALCint), &nb_samples);
if (error = al_get_error(ad->device, &error_msg)) goto fail;
if (nb_samples > 0)
break;
if (ctx->flags & AVFMT_FLAG_NONBLOCK)
return AVERROR(EAGAIN);
av_usleep(1000);
}
/* Create a packet of appropriate size */ /* Create a packet of appropriate size */
if ((error = av_new_packet(pkt, nb_samples*ad->sample_step)) < 0) if ((error = av_new_packet(pkt, nb_samples*ad->sample_step)) < 0)