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Code Issues Releases Activity

pcmdec: return buf_size instead of src-buf.

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The values will always be the same, so this change eliminates an unneeded
variable. It also gets rid of the need to reset src when memcpy() is used.
This commit is contained in:
Justin Ruggles 2011-09-29 16:00:00 -04:00
parent 85579b6381
commit 0093f96d34
1 changed files with 3 additions and 7 deletions
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10
libavcodec/pcm.c
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@ -247,16 +247,15 @@ static int pcm_decode_frame(AVCodecContext *avctx,
void *data, int *data_size, void *data, int *data_size,
AVPacket *avpkt) AVPacket *avpkt)
{ {
const uint8_t *buf = avpkt->data; const uint8_t *src = avpkt->data;
int buf_size = avpkt->size; int buf_size = avpkt->size;
PCMDecode *s = avctx->priv_data; PCMDecode *s = avctx->priv_data;
int sample_size, c, n, i; int sample_size, c, n, i;
uint8_t *samples; uint8_t *samples;
const uint8_t *src, *src8, *src2[MAX_CHANNELS]; const uint8_t *src8, *src2[MAX_CHANNELS];
int32_t *dst_int32_t; int32_t *dst_int32_t;
samples = data; samples = data;
src = buf;
sample_size = av_get_bits_per_sample(avctx->codec_id)/8; sample_size = av_get_bits_per_sample(avctx->codec_id)/8;
@ -329,7 +328,6 @@ static int pcm_decode_frame(AVCodecContext *avctx,
AV_WN16A(samples, bytestream_get_le16(&src2[c])); AV_WN16A(samples, bytestream_get_le16(&src2[c]));
samples += 2; samples += 2;
} }
src = src2[avctx->channels-1];
break; break;
case CODEC_ID_PCM_U16LE: case CODEC_ID_PCM_U16LE:
DECODE(16, le16, src, samples, n, 0, 0x8000) DECODE(16, le16, src, samples, n, 0, 0x8000)
@ -375,7 +373,6 @@ static int pcm_decode_frame(AVCodecContext *avctx,
#endif /* HAVE_BIGENDIAN */ #endif /* HAVE_BIGENDIAN */
case CODEC_ID_PCM_U8: case CODEC_ID_PCM_U8:
memcpy(samples, src, n*sample_size); memcpy(samples, src, n*sample_size);
src += n*sample_size;
samples += n * sample_size; samples += n * sample_size;
break; break;
case CODEC_ID_PCM_ZORK: case CODEC_ID_PCM_ZORK:
@ -439,14 +436,13 @@ static int pcm_decode_frame(AVCodecContext *avctx,
((src8[2] & 0xF0) << 8) | (src8[4] << 4) | (src8[3] >> 4); ((src8[2] & 0xF0) << 8) | (src8[4] << 4) | (src8[3] >> 4);
} }
} }
src += n * avctx->channels * 5;
samples = (uint8_t *) dst_int32_t; samples = (uint8_t *) dst_int32_t;
break; break;
default: default:
return -1; return -1;
} }
*data_size = samples - (uint8_t *)data; *data_size = samples - (uint8_t *)data;
return src - buf; return buf_size;
} }
#if CONFIG_ENCODERS #if CONFIG_ENCODERS