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mpeg4videodec: move use_intra_dc_vlc from MpegEncContext to Mpeg4DecContext

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This commit is contained in:
Anton Khirnov 2013-11-26 14:34:52 +01:00
parent 3d7c84747d
commit e41ff4210a
3 changed files with 10 additions and 9 deletions
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1
libavcodec/mpeg4video.h
View File

@ -83,6 +83,7 @@ typedef struct Mpeg4DecContext {
int new_pred;
int enhancement_type;
int scalability;
int use_intra_dc_vlc;
/* bug workarounds */
int divx_version;

17
libavcodec/mpeg4videodec.c
View File

@ -925,9 +925,10 @@ int ff_mpeg4_decode_partitions(Mpeg4DecContext *ctx)
* Decode a block.
* @return <0 if an error occurred
*/
static inline int mpeg4_decode_block(MpegEncContext *s, int16_t *block,
static inline int mpeg4_decode_block(Mpeg4DecContext *ctx, int16_t *block,
int n, int coded, int intra, int rvlc)
{
MpegEncContext *s = &ctx->m;
int level, i, last, run, qmul, qadd, dc_pred_dir;
RLTable *rl;
RL_VLC_ELEM *rl_vlc;
@ -936,7 +937,7 @@ static inline int mpeg4_decode_block(MpegEncContext *s, int16_t *block,
// Note intra & rvlc should be optimized away if this is inlined
if (intra) {
if (s->use_intra_dc_vlc) {
if (ctx->use_intra_dc_vlc) {
/* DC coef */
if (s->partitioned_frame) {
level = s->dc_val[0][s->block_index[n]];
@ -1151,7 +1152,7 @@ static inline int mpeg4_decode_block(MpegEncContext *s, int16_t *block,
not_coded:
if (intra) {
if (!s->use_intra_dc_vlc) {
if (!ctx->use_intra_dc_vlc) {
block[0] = ff_mpeg4_pred_dc(s, n, block[0], &dc_pred_dir, 0);
i -= i >> 31; // if (i == -1) i = 0;
@ -1178,7 +1179,7 @@ static int mpeg4_decode_partitioned_mb(MpegEncContext *s, int16_t block[6][64])
mb_type = s->current_picture.mb_type[xy];
cbp = s->cbp_table[xy];
s->use_intra_dc_vlc = s->qscale < s->intra_dc_threshold;
ctx->use_intra_dc_vlc = s->qscale < s->intra_dc_threshold;
if (s->current_picture.qscale_table[xy] != s->qscale)
ff_set_qscale(s, s->current_picture.qscale_table[xy]);
@ -1228,7 +1229,7 @@ static int mpeg4_decode_partitioned_mb(MpegEncContext *s, int16_t block[6][64])
s->dsp.clear_blocks(s->block[0]);
/* decode each block */
for (i = 0; i < 6; i++) {
if (mpeg4_decode_block(s, block[i], i, cbp & 32, s->mb_intra, ctx->rvlc) < 0) {
if (mpeg4_decode_block(ctx, block[i], i, cbp & 32, s->mb_intra, ctx->rvlc) < 0) {
av_log(s->avctx, AV_LOG_ERROR,
"texture corrupted at %d %d %d\n",
s->mb_x, s->mb_y, s->mb_intra);
@ -1576,7 +1577,7 @@ intra:
}
cbp = (cbpc & 3) | (cbpy << 2);
s->use_intra_dc_vlc = s->qscale < s->intra_dc_threshold;
ctx->use_intra_dc_vlc = s->qscale < s->intra_dc_threshold;
if (dquant)
ff_set_qscale(s, s->qscale + quant_tab[get_bits(&s->gb, 2)]);
@ -1587,7 +1588,7 @@ intra:
s->dsp.clear_blocks(s->block[0]);
/* decode each block */
for (i = 0; i < 6; i++) {
if (mpeg4_decode_block(s, block[i], i, cbp & 32, 1, 0) < 0)
if (mpeg4_decode_block(ctx, block[i], i, cbp & 32, 1, 0) < 0)
return -1;
cbp += cbp;
}
@ -1596,7 +1597,7 @@ intra:
/* decode each block */
for (i = 0; i < 6; i++) {
if (mpeg4_decode_block(s, block[i], i, cbp & 32, 0, 0) < 0)
if (mpeg4_decode_block(ctx, block[i], i, cbp & 32, 0, 0) < 0)
return -1;
cbp += cbp;
}

1
libavcodec/mpegvideo.h
View File

@ -593,7 +593,6 @@ typedef struct MpegEncContext {
int vo_type;
int vol_control_parameters; ///< does the stream contain the low_delay flag, used to workaround buggy encoders
int intra_dc_threshold; ///< QP above whch the ac VLC should be used for intra dc
int use_intra_dc_vlc;
PutBitContext tex_pb; ///< used for data partitioned VOPs
PutBitContext pb2; ///< used for data partitioned VOPs
int mpeg_quant;