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Code Issues Releases Activity

avcodec/huffyuvenc: Factorize store_huffman_tables() out

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-01-08 14:00:14 +01:00
parent 9e7b477c8c
commit 9d098ea32f
1 changed files with 29 additions and 24 deletions
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53
libavcodec/huffyuvenc.c
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@ -142,12 +142,33 @@ static int store_table(HYuvContext *s, const uint8_t *len, uint8_t *buf)
return index;
}
static int store_huffman_tables(HYuvContext *s, uint8_t *buf)
{
int i;
int size = 0;
int count = 3;
if (s->version > 2)
count = 1 + s->alpha + 2*s->chroma;
for (i = 0; i < count; i++) {
ff_huff_gen_len_table(s->len[i], s->stats[i]);
if (ff_huffyuv_generate_bits_table(s->bits[i], s->len[i]) < 0) {
return -1;
}
size += store_table(s, s->len[i], buf + size);
}
return size;
}
static av_cold int encode_init(AVCodecContext *avctx)
{
HYuvContext *s = avctx->priv_data;
int i, j;
int ret;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
int extradata_tables;
ff_huffyuv_common_init(avctx);
@ -257,7 +278,6 @@ static av_cold int encode_init(AVCodecContext *avctx)
return AVERROR(EINVAL);
}
extradata_tables = 1 + 2*s->chroma + s->alpha;
((uint8_t*)avctx->extradata)[0] = s->predictor | (s->decorrelate << 6);
((uint8_t*)avctx->extradata)[2] = s->interlaced ? 0x10 : 0x20;
if (s->context)
@ -265,7 +285,6 @@ static av_cold int encode_init(AVCodecContext *avctx)
if (s->version < 3) {
((uint8_t*)avctx->extradata)[1] = s->bitstream_bpp;
((uint8_t*)avctx->extradata)[3] = 0;
extradata_tables = 3;
} else {
((uint8_t*)avctx->extradata)[1] = ((s->bps-1)<<4) | s->chroma_h_shift | (s->chroma_v_shift<<2);
if (s->chroma)
@ -304,16 +323,10 @@ static av_cold int encode_init(AVCodecContext *avctx)
}
}
for (i = 0; i < extradata_tables; i++) {
ff_huff_gen_len_table(s->len[i], s->stats[i]);
if (ff_huffyuv_generate_bits_table(s->bits[i], s->len[i]) < 0) {
return -1;
}
s->avctx->extradata_size +=
store_table(s, s->len[i], &((uint8_t*)s->avctx->extradata)[s->avctx->extradata_size]);
}
ret = store_huffman_tables(s, s->avctx->extradata + s->avctx->extradata_size);
if (ret < 0)
return ret;
s->avctx->extradata_size += ret;
if (s->context) {
for (i = 0; i < 4; i++) {
@ -554,17 +567,9 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
return ret;
if (s->context) {
int count = 3;
if (s->version > 2)
count = 1 + s->alpha + 2*s->chroma;
for (i = 0; i < count; i++) {
ff_huff_gen_len_table(s->len[i], s->stats[i]);
if (ff_huffyuv_generate_bits_table(s->bits[i], s->len[i]) < 0)
return -1;
size += store_table(s, s->len[i], &pkt->data[size]);
}
size = store_huffman_tables(s, pkt->data);
if (size < 0)
return size;
for (i = 0; i < 4; i++)
for (j = 0; j < 256; j++)