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zerocodec: factorize loop

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-03-21 03:29:30 +01:00
parent 15e07348fe
commit 9e69d3c6d4
1 changed files with 14 additions and 27 deletions
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41
libavcodec/zerocodec.c
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@ -66,45 +66,32 @@ static int zerocodec_decode_frame(AVCodecContext *avctx, void *data,
pic->key_frame = 1;
pic->pict_type = AV_PICTURE_TYPE_I;
for (i = 0; i < avctx->height; i++) {
zstream->next_out = dst;
zstream->avail_out = avctx->width << 1;
zret = inflate(zstream, Z_SYNC_FLUSH);
if (zret != Z_OK && zret != Z_STREAM_END) {
av_log(avctx, AV_LOG_ERROR,
"Inflate failed with return code: %d\n", zret);
return AVERROR(EINVAL);
}
dst += pic->linesize[0];
}
} else {
pic->key_frame = 0;
pic->pict_type = AV_PICTURE_TYPE_P;
for (i = 0; i < avctx->height; i++) {
}
zstream->next_out = dst;
zstream->avail_out = avctx->width << 1;
for (i = 0; i < avctx->height; i++) {
zret = inflate(zstream, Z_SYNC_FLUSH);
zstream->next_out = dst;
zstream->avail_out = avctx->width << 1;
if (zret != Z_OK && zret != Z_STREAM_END) {
av_log(avctx, AV_LOG_ERROR,
"Inflate failed with return code: %d\n", zret);
return AVERROR(EINVAL);
}
zret = inflate(zstream, Z_SYNC_FLUSH);
if (zret != Z_OK && zret != Z_STREAM_END) {
av_log(avctx, AV_LOG_ERROR,
"Inflate failed with return code: %d\n", zret);
return AVERROR(EINVAL);
}
if (!(avpkt->flags & AV_PKT_FLAG_KEY))
for (j = 0; j < avctx->width << 1; j++)
dst[j] += prev[j] & -!dst[j];
prev += prev_pic->linesize[0];
dst += pic->linesize[0];
}
prev += prev_pic->linesize[0];
dst += pic->linesize[0];
}
/* Release the previous buffer if need be */