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Code Issues Releases Activity

avcodec/vc1_block: Don't duplicate #defines

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VC1 shares some VLCs with MSMPEG-4, but vc1_block.c
simply duplicates the defines instead of including
the appropriate headers; furthermore, use a proper
prefix for these defines: DC_VLC_BITS is also used
by other codecs.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2022-10-30 12:58:31 +01:00
parent 1669fe8631
commit 8f7bf45895
5 changed files with 34 additions and 26 deletions
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2
libavcodec/msmpeg4data.h
View File

@ -48,7 +48,9 @@ typedef struct MVTable {
} MVTable;
FF_VISIBILITY_PUSH_HIDDEN
#define MSMP4_MB_INTRA_VLC_BITS 9
extern VLC ff_msmp4_mb_i_vlc;
#define MSMP4_DC_VLC_BITS 9
extern VLC ff_msmp4_dc_luma_vlc[2];
extern VLC ff_msmp4_dc_chroma_vlc[2];

27
libavcodec/msmpeg4dec.c
View File

@ -37,7 +37,6 @@
#include "mpeg4videodec.h"
#include "msmpeg4data.h"
#define DC_VLC_BITS 9
#define V2_INTRA_CBPC_VLC_BITS 3
#define V2_MB_TYPE_VLC_BITS 7
#define MV_VLC_BITS 9
@ -237,7 +236,7 @@ static int msmpeg4v34_decode_mb(MpegEncContext *s, int16_t block[6][64])
cbp = code & 0x3f;
} else {
s->mb_intra = 1;
code = get_vlc2(&s->gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
code = get_vlc2(&s->gb, ff_msmp4_mb_i_vlc.table, MSMP4_MB_INTRA_VLC_BITS, 2);
/* predict coded block pattern */
cbp = 0;
for(i=0;i<6;i++) {
@ -317,23 +316,23 @@ static av_cold void msmpeg4_decode_init_static(void)
mv->table_mv_bits, 1, 1,
mv->table_mv_code, 2, 2, 2694);
INIT_VLC_STATIC(&ff_msmp4_dc_luma_vlc[0], DC_VLC_BITS, 120,
INIT_VLC_STATIC(&ff_msmp4_dc_luma_vlc[0], MSMP4_DC_VLC_BITS, 120,
&ff_table0_dc_lum[0][1], 8, 4,
&ff_table0_dc_lum[0][0], 8, 4, 1158);
INIT_VLC_STATIC(&ff_msmp4_dc_chroma_vlc[0], DC_VLC_BITS, 120,
INIT_VLC_STATIC(&ff_msmp4_dc_chroma_vlc[0], MSMP4_DC_VLC_BITS, 120,
&ff_table0_dc_chroma[0][1], 8, 4,
&ff_table0_dc_chroma[0][0], 8, 4, 1118);
INIT_VLC_STATIC(&ff_msmp4_dc_luma_vlc[1], DC_VLC_BITS, 120,
INIT_VLC_STATIC(&ff_msmp4_dc_luma_vlc[1], MSMP4_DC_VLC_BITS, 120,
&ff_table1_dc_lum[0][1], 8, 4,
&ff_table1_dc_lum[0][0], 8, 4, 1476);
INIT_VLC_STATIC(&ff_msmp4_dc_chroma_vlc[1], DC_VLC_BITS, 120,
INIT_VLC_STATIC(&ff_msmp4_dc_chroma_vlc[1], MSMP4_DC_VLC_BITS, 120,
&ff_table1_dc_chroma[0][1], 8, 4,
&ff_table1_dc_chroma[0][0], 8, 4, 1216);
INIT_VLC_STATIC(&v2_dc_lum_vlc, DC_VLC_BITS, 512,
INIT_VLC_STATIC(&v2_dc_lum_vlc, MSMP4_DC_VLC_BITS, 512,
&ff_v2_dc_lum_table[0][1], 8, 4,
&ff_v2_dc_lum_table[0][0], 8, 4, 1472);
INIT_VLC_STATIC(&v2_dc_chroma_vlc, DC_VLC_BITS, 512,
INIT_VLC_STATIC(&v2_dc_chroma_vlc, MSMP4_DC_VLC_BITS, 512,
&ff_v2_dc_chroma_table[0][1], 8, 4,
&ff_v2_dc_chroma_table[0][0], 8, 4, 1506);
@ -355,7 +354,7 @@ static av_cold void msmpeg4_decode_init_static(void)
offset += ff_mb_non_intra_vlc[i].table_size;
}
INIT_VLC_STATIC(&ff_msmp4_mb_i_vlc, MB_INTRA_VLC_BITS, 64,
INIT_VLC_STATIC(&ff_msmp4_mb_i_vlc, MSMP4_MB_INTRA_VLC_BITS, 64,
&ff_msmp4_mb_i_table[0][1], 4, 2,
&ff_msmp4_mb_i_table[0][0], 4, 2, 536);
@ -591,9 +590,9 @@ static int msmpeg4_decode_dc(MpegEncContext * s, int n, int *dir_ptr)
if(s->msmpeg4_version<=2){
if (n < 4) {
level = get_vlc2(&s->gb, v2_dc_lum_vlc.table, DC_VLC_BITS, 3);
level = get_vlc2(&s->gb, v2_dc_lum_vlc.table, MSMP4_DC_VLC_BITS, 3);
} else {
level = get_vlc2(&s->gb, v2_dc_chroma_vlc.table, DC_VLC_BITS, 3);
level = get_vlc2(&s->gb, v2_dc_chroma_vlc.table, MSMP4_DC_VLC_BITS, 3);
}
if (level < 0) {
av_log(s->avctx, AV_LOG_ERROR, "illegal dc vlc\n");
@ -603,9 +602,11 @@ static int msmpeg4_decode_dc(MpegEncContext * s, int n, int *dir_ptr)
level-=256;
}else{ //FIXME optimize use unified tables & index
if (n < 4) {
level = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
level = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table,
MSMP4_DC_VLC_BITS, 3);
} else {
level = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
level = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table,
MSMP4_DC_VLC_BITS, 3);
}
if (level == DC_MAX) {

1
libavcodec/msmpeg4dec.h
View File

@ -27,7 +27,6 @@
#define INTER_INTRA_VLC_BITS 3
#define MB_NON_INTRA_VLC_BITS 9
#define MB_INTRA_VLC_BITS 9
extern VLC ff_mb_non_intra_vlc[4];
extern VLC ff_inter_intra_vlc;

27
libavcodec/vc1_block.c
View File

@ -37,9 +37,6 @@
#include "vc1acdata.h"
#include "vc1data.h"
#define MB_INTRA_VLC_BITS 9
#define DC_VLC_BITS 9
// offset tables for interlaced picture MVDATA decoding
static const uint8_t offset_table[2][9] = {
{ 0, 1, 2, 4, 8, 16, 32, 64, 128 },
@ -596,9 +593,11 @@ static int vc1_decode_i_block(VC1Context *v, int16_t block[64], int n,
/* Get DC differential */
if (n < 4) {
dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table,
MSMP4_DC_VLC_BITS, 3);
} else {
dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table,
MSMP4_DC_VLC_BITS, 3);
}
if (dcdiff) {
const int m = (v->pq == 1 || v->pq == 2) ? 3 - v->pq : 0;
@ -740,9 +739,11 @@ static int vc1_decode_i_block_adv(VC1Context *v, int16_t block[64], int n,
/* Get DC differential */
if (n < 4) {
dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table,
MSMP4_DC_VLC_BITS, 3);
} else {
dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table,
MSMP4_DC_VLC_BITS, 3);
}
if (dcdiff) {
const int m = (quant == 1 || quant == 2) ? 3 - quant : 0;
@ -940,9 +941,11 @@ static int vc1_decode_intra_block(VC1Context *v, int16_t block[64], int n,
/* Get DC differential */
if (n < 4) {
dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table,
MSMP4_DC_VLC_BITS, 3);
} else {
dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table,
MSMP4_DC_VLC_BITS, 3);
}
if (dcdiff) {
const int m = (quant == 1 || quant == 2) ? 3 - quant : 0;
@ -2588,7 +2591,8 @@ static void vc1_decode_i_blocks(VC1Context *v)
}
// do actual MB decoding and displaying
cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table,
MSMP4_MB_INTRA_VLC_BITS, 2);
v->s.ac_pred = get_bits1(&v->s.gb);
for (k = 0; k < 6; k++) {
@ -2723,7 +2727,8 @@ static int vc1_decode_i_blocks_adv(VC1Context *v)
return 0;
}
cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table,
MSMP4_MB_INTRA_VLC_BITS, 2);
if (v->acpred_is_raw)
v->s.ac_pred = get_bits1(&v->s.gb);
else

3
libavcodec/wmv2dec.c
View File

@ -482,7 +482,8 @@ static int wmv2_decode_mb(MpegEncContext *s, int16_t block[6][64])
s->mb_intra = 1;
if (get_bits_left(&s->gb) <= 0)
return AVERROR_INVALIDDATA;
code = get_vlc2(&s->gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
code = get_vlc2(&s->gb, ff_msmp4_mb_i_vlc.table,
MSMP4_MB_INTRA_VLC_BITS, 2);
/* predict coded block pattern */
cbp = 0;
for (i = 0; i < 6; i++) {