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avcodec/pcm-blurayenc: set fixed number of samples per packet 

Other values are forbidden by specification.
This commit is contained in:
Paul B Mahol 2022-04-24 14:22:18 +02:00
parent 037fa0437d
commit 058a1ff9b4
1 changed files with 23 additions and 16 deletions
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39
libavcodec/pcm-blurayenc.c
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@ -33,28 +33,16 @@ static av_cold int pcm_bluray_encode_init(AVCodecContext *avctx)
{
BlurayPCMEncContext *s = avctx->priv_data;
uint8_t ch_layout;
int quant, freq;
switch (avctx->sample_rate) {
case 48000:
freq = 1;
break;
case 96000:
freq = 4;
break;
case 192000:
freq = 5;
break;
default:
return AVERROR_BUG;
}
int quant, freq, frame_size;
switch (avctx->sample_fmt) {
case AV_SAMPLE_FMT_S16:
avctx->bits_per_coded_sample = 16;
frame_size = 120;
quant = 1;
break;
case AV_SAMPLE_FMT_S32:
frame_size = 180;
avctx->bits_per_coded_sample = 24;
quant = 3;
break;
@ -62,6 +50,24 @@ static av_cold int pcm_bluray_encode_init(AVCodecContext *avctx)
return AVERROR_BUG;
}
switch (avctx->sample_rate) {
case 48000:
freq = 1;
break;
case 96000:
frame_size *= 2;
freq = 4;
break;
case 192000:
frame_size *= 4;
freq = 5;
break;
default:
return AVERROR_BUG;
}
frame_size *= avctx->ch_layout.nb_channels;
switch (avctx->ch_layout.u.mask) {
case AV_CH_LAYOUT_MONO:
ch_layout = 1;
@ -98,6 +104,7 @@ static av_cold int pcm_bluray_encode_init(AVCodecContext *avctx)
}
s->header = (((ch_layout << 4) | freq) << 8) | (quant << 6);
avctx->frame_size = frame_size;
return 0;
}
@ -308,5 +315,5 @@ const FFCodec ff_pcm_bluray_encoder = {
.p.sample_fmts = (const enum AVSampleFormat[]) {
AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_NONE },
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
.p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_VARIABLE_FRAME_SIZE,
.p.capabilities = AV_CODEC_CAP_DR1,
};