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Use memcpy() for PCM S16/S32 codecs when codec byte-order matches machine byte-order. 

Originally committed as revision 14784 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Peter Ross 2008-08-16 01:25:12 +00:00
parent 4c00864f31
commit 38a1c7f2be
1 changed files with 47 additions and 31 deletions
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78
libavcodec/pcm.c
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@ -172,13 +172,6 @@ static int pcm_encode_frame(AVCodecContext *avctx,
}
switch(avctx->codec->id) {
case CODEC_ID_PCM_F32BE:
case CODEC_ID_PCM_S32BE:
ENCODE(int32_t, be32, samples, dst, n, 0, 0)
break;
case CODEC_ID_PCM_S32LE:
ENCODE(int32_t, le32, samples, dst, n, 0, 0)
break;
case CODEC_ID_PCM_U32LE:
ENCODE(uint32_t, le32, samples, dst, n, 0, 0x80000000)
break;
@ -206,12 +199,6 @@ static int pcm_encode_frame(AVCodecContext *avctx,
samples++;
}
break;
case CODEC_ID_PCM_S16LE:
ENCODE(int16_t, le16, samples, dst, n, 0, 0)
break;
case CODEC_ID_PCM_S16BE:
ENCODE(int16_t, be16, samples, dst, n, 0, 0)
break;
case CODEC_ID_PCM_U16LE:
ENCODE(uint16_t, le16, samples, dst, n, 0, 0x8000)
break;
@ -225,9 +212,30 @@ static int pcm_encode_frame(AVCodecContext *avctx,
*dst++ = v - 128;
}
break;
#if WORDS_BIGENDIAN
case CODEC_ID_PCM_S32LE:
ENCODE(int32_t, le32, samples, dst, n, 0, 0)
break;
case CODEC_ID_PCM_S16LE:
ENCODE(int16_t, le16, samples, dst, n, 0, 0)
break;
case CODEC_ID_PCM_F32BE:
case CODEC_ID_PCM_S32BE:
case CODEC_ID_PCM_S16BE:
#else
case CODEC_ID_PCM_F32BE:
case CODEC_ID_PCM_S32BE:
ENCODE(int32_t, be32, samples, dst, n, 0, 0)
break;
case CODEC_ID_PCM_S16BE:
ENCODE(int16_t, be16, samples, dst, n, 0, 0)
break;
case CODEC_ID_PCM_S32LE:
case CODEC_ID_PCM_S16LE:
#endif /* WORDS_BIGENDIAN */
case CODEC_ID_PCM_U8:
memcpy(dst, samples, n);
dst += n;
memcpy(dst, samples, n*sample_size);
dst += n*sample_size;
break;
case CODEC_ID_PCM_ZORK:
for(;n>0;n--) {
@ -347,13 +355,6 @@ static int pcm_decode_frame(AVCodecContext *avctx,
n = buf_size/sample_size;
switch(avctx->codec->id) {
case CODEC_ID_PCM_F32BE:
case CODEC_ID_PCM_S32BE:
DECODE(int32_t, be32, src, samples, n, 0, 0)
break;
case CODEC_ID_PCM_S32LE:
DECODE(int32_t, le32, src, samples, n, 0, 0)
break;
case CODEC_ID_PCM_U32LE:
DECODE(uint32_t, le32, src, samples, n, 0, 0x80000000)
break;
@ -380,9 +381,6 @@ static int pcm_decode_frame(AVCodecContext *avctx,
(ff_reverse[v & 0xff] << 8);
}
break;
case CODEC_ID_PCM_S16LE:
DECODE(int16_t, le16, src, samples, n, 0, 0)
break;
case CODEC_ID_PCM_S16LE_PLANAR:
n /= avctx->channels;
for(c=0;c<avctx->channels;c++)
@ -392,9 +390,6 @@ static int pcm_decode_frame(AVCodecContext *avctx,
*samples++ = bytestream_get_le16(&src2[c]);
src = src2[avctx->channels-1];
break;
case CODEC_ID_PCM_S16BE:
DECODE(int16_t, be16, src, samples, n, 0, 0)
break;
case CODEC_ID_PCM_U16LE:
DECODE(uint16_t, le16, src, samples, n, 0, 0x8000)
break;
@ -408,10 +403,31 @@ static int pcm_decode_frame(AVCodecContext *avctx,
}
samples= (short*)dstu8;
break;
#if WORDS_BIGENDIAN
case CODEC_ID_PCM_S32LE:
DECODE(int32_t, le32, src, samples, n, 0, 0)
break;
case CODEC_ID_PCM_S16LE:
DECODE(int16_t, le16, src, samples, n, 0, 0)
break;
case CODEC_ID_PCM_F32BE:
case CODEC_ID_PCM_S32BE:
case CODEC_ID_PCM_S16BE:
#else
case CODEC_ID_PCM_F32BE:
case CODEC_ID_PCM_S32BE:
DECODE(int32_t, be32, src, samples, n, 0, 0)
break;
case CODEC_ID_PCM_S16BE:
DECODE(int16_t, be16, src, samples, n, 0, 0)
break;
case CODEC_ID_PCM_S32LE:
case CODEC_ID_PCM_S16LE:
#endif /* WORDS_BIGENDIAN */
case CODEC_ID_PCM_U8:
memcpy(samples, src, n);
src += n;
samples = (short*)((uint8_t*)data + n);
memcpy(samples, src, n*sample_size);
src += n*sample_size;
samples = (short*)((uint8_t*)data + n*sample_size);
break;
case CODEC_ID_PCM_ZORK:
for(;n>0;n--) {