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pcmdec: use planar sample format for pcm_lxf

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This commit is contained in:
Justin Ruggles 2012-08-28 11:45:39 -04:00
parent c1a9cfd1fe
commit 7e5f045039
1 changed files with 15 additions and 18 deletions
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31
libavcodec/pcm.c
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@ -443,26 +443,23 @@ static int pcm_decode_frame(AVCodecContext *avctx, void *data,
case AV_CODEC_ID_PCM_LXF:
{
int i;
const uint8_t *src8;
dst_int32_t = (int32_t *)s->frame.data[0];
n /= avctx->channels;
// unpack and de-planarize
for (c = 0; c < avctx->channels; c++) {
dst_int32_t = (int32_t *)s->frame.extended_data[c];
for (i = 0; i < n; i++) {
for (c = 0, src8 = src + i * 5; c < avctx->channels; c++, src8 += n * 5) {
// extract low 20 bits and expand to 32 bits
*dst_int32_t++ = (src8[2] << 28) |
(src8[1] << 20) |
(src8[0] << 12) |
((src8[2] & 0xF) << 8) |
src8[1];
}
for (c = 0, src8 = src + i * 5; c < avctx->channels; c++, src8 += n * 5) {
*dst_int32_t++ = (src[2] << 28) |
(src[1] << 20) |
(src[0] << 12) |
((src[2] & 0x0F) << 8) |
src[1];
// extract high 20 bits and expand to 32 bits
*dst_int32_t++ = (src8[4] << 24) |
(src8[3] << 16) |
((src8[2] & 0xF0) << 8) |
(src8[4] << 4) |
(src8[3] >> 4);
*dst_int32_t++ = (src[4] << 24) |
(src[3] << 16) |
((src[2] & 0xF0) << 8) |
(src[4] << 4) |
(src[3] >> 4);
src += 5;
}
}
break;
@ -524,7 +521,7 @@ PCM_CODEC (AV_CODEC_ID_PCM_F32BE, AV_SAMPLE_FMT_FLT, pcm_f32be, "
PCM_CODEC (AV_CODEC_ID_PCM_F32LE, AV_SAMPLE_FMT_FLT, pcm_f32le, "PCM 32-bit floating point little-endian");
PCM_CODEC (AV_CODEC_ID_PCM_F64BE, AV_SAMPLE_FMT_DBL, pcm_f64be, "PCM 64-bit floating point big-endian");
PCM_CODEC (AV_CODEC_ID_PCM_F64LE, AV_SAMPLE_FMT_DBL, pcm_f64le, "PCM 64-bit floating point little-endian");
PCM_DECODER(AV_CODEC_ID_PCM_LXF, AV_SAMPLE_FMT_S32, pcm_lxf, "PCM signed 20-bit little-endian planar");
PCM_DECODER(AV_CODEC_ID_PCM_LXF, AV_SAMPLE_FMT_S32P, pcm_lxf, "PCM signed 20-bit little-endian planar");
PCM_CODEC (AV_CODEC_ID_PCM_MULAW, AV_SAMPLE_FMT_S16, pcm_mulaw, "PCM mu-law");
PCM_CODEC (AV_CODEC_ID_PCM_S8, AV_SAMPLE_FMT_U8, pcm_s8, "PCM signed 8-bit");
PCM_CODEC (AV_CODEC_ID_PCM_S16BE, AV_SAMPLE_FMT_S16, pcm_s16be, "PCM signed 16-bit big-endian");