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adpcmenc: remove some unneeded casts

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This commit is contained in:
Justin Ruggles 2012-01-30 13:34:43 -05:00
parent 149f2058a4
commit a3a0691bde
1 changed files with 4 additions and 4 deletions
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8
libavcodec/adpcmenc.c
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@ -230,12 +230,12 @@ static inline uint8_t adpcm_ms_compress_sample(ADPCMChannelStatus *c,
nibble = (nibble + bias) / c->idelta;
nibble = av_clip(nibble, -8, 7) & 0x0F;
predictor += (signed)((nibble & 0x08) ? (nibble - 0x10) : nibble) * c->idelta;
predictor += ((nibble & 0x08) ? (nibble - 0x10) : nibble) * c->idelta;
c->sample2 = c->sample1;
c->sample1 = av_clip_int16(predictor);
c->idelta = (ff_adpcm_AdaptationTable[(int)nibble] * c->idelta) >> 8;
c->idelta = (ff_adpcm_AdaptationTable[nibble] * c->idelta) >> 8;
if (c->idelta < 16)
c->idelta = 16;
@ -491,14 +491,14 @@ static int adpcm_encode_frame(AVCodecContext *avctx, uint8_t *frame,
/* c->status[0].step_index = 0;
XXX: not sure how to init the state machine */
bytestream_put_le16(&dst, c->status[0].prev_sample);
*dst++ = (uint8_t)c->status[0].step_index;
*dst++ = c->status[0].step_index;
*dst++ = 0; /* unknown */
samples++;
if (avctx->channels == 2) {
c->status[1].prev_sample = samples[0];
/* c->status[1].step_index = 0; */
bytestream_put_le16(&dst, c->status[1].prev_sample);
*dst++ = (uint8_t)c->status[1].step_index;
*dst++ = c->status[1].step_index;
*dst++ = 0;
samples++;
}