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vc1dec: drop mv_f_last, simplify code

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-04-25 02:31:58 +02:00
parent 16cecf9c3d
commit 32a6dfeb12
2 changed files with 2 additions and 14 deletions
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1
libavcodec/vc1.h
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@ -354,7 +354,6 @@ typedef struct VC1Context{
uint8_t zzi_8x8[64];
uint8_t *blk_mv_type_base, *blk_mv_type; ///< 0: frame MV, 1: field MV (interlaced frame)
uint8_t *mv_f_base, *mv_f[2]; ///< 0: MV obtained from same field, 1: opposite field
uint8_t *mv_f_last_base, *mv_f_last[2];
uint8_t *mv_f_next_base, *mv_f_next[2];
int field_mode; ///< 1 for interlaced field pictures
int fptype;

15
libavcodec/vc1dec.c
View File

@ -5490,9 +5490,6 @@ av_cold int ff_vc1_decode_init_alloc_tables(VC1Context *v)
v->mv_f_base = av_mallocz(2 * (s->b8_stride * (s->mb_height * 2 + 1) + s->mb_stride * (s->mb_height + 1) * 2));
v->mv_f[0] = v->mv_f_base + s->b8_stride + 1;
v->mv_f[1] = v->mv_f[0] + (s->b8_stride * (s->mb_height * 2 + 1) + s->mb_stride * (s->mb_height + 1) * 2);
v->mv_f_last_base = av_mallocz(2 * (s->b8_stride * (s->mb_height * 2 + 1) + s->mb_stride * (s->mb_height + 1) * 2));
v->mv_f_last[0] = v->mv_f_last_base + s->b8_stride + 1;
v->mv_f_last[1] = v->mv_f_last[0] + (s->b8_stride * (s->mb_height * 2 + 1) + s->mb_stride * (s->mb_height + 1) * 2);
v->mv_f_next_base = av_mallocz(2 * (s->b8_stride * (s->mb_height * 2 + 1) + s->mb_stride * (s->mb_height + 1) * 2));
v->mv_f_next[0] = v->mv_f_next_base + s->b8_stride + 1;
v->mv_f_next[1] = v->mv_f_next[0] + (s->b8_stride * (s->mb_height * 2 + 1) + s->mb_stride * (s->mb_height + 1) * 2);
@ -5705,7 +5702,6 @@ av_cold int ff_vc1_decode_end(AVCodecContext *avctx)
av_freep(&v->mb_type_base);
av_freep(&v->blk_mv_type_base);
av_freep(&v->mv_f_base);
av_freep(&v->mv_f_last_base);
av_freep(&v->mv_f_next_base);
av_freep(&v->block);
av_freep(&v->cbp_base);
@ -6102,15 +6098,8 @@ static int vc1_decode_frame(AVCodecContext *avctx, void *data,
s->linesize >>= 1;
s->uvlinesize >>= 1;
if (v->s.pict_type != AV_PICTURE_TYPE_BI && v->s.pict_type != AV_PICTURE_TYPE_B) {
uint8_t *tmp[2];
tmp[0] = v->mv_f_last[0];
tmp[1] = v->mv_f_last[1];
v->mv_f_last[0] = v->mv_f_next[0];
v->mv_f_last[1] = v->mv_f_next[1];
v->mv_f_next[0] = v->mv_f[0];
v->mv_f_next[1] = v->mv_f[1];
v->mv_f[0] = tmp[0];
v->mv_f[1] = tmp[1];
FFSWAP(uint8_t *, v->mv_f_next[0], v->mv_f[0]);
FFSWAP(uint8_t *, v->mv_f_next[1], v->mv_f[1]);
}
}
av_dlog(s->avctx, "Consumed %i/%i bits\n",