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Code Issues Releases Activity

avcodec/asvdec: Avoid superfluous VLC structures

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Of all these VLCs here, only VLC.table was really used
after init, so use the ff_vlc_init_tables API
to get rid of them.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2023-09-20 18:55:47 +02:00
parent ab8a8246c8
commit a99285aedf
1 changed files with 25 additions and 25 deletions
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50
libavcodec/asvdec.c
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@ -45,11 +45,11 @@
#define ASV1_LEVEL_VLC_BITS 4
#define ASV2_LEVEL_VLC_BITS 10
static VLC ccp_vlc;
static VLC level_vlc;
static VLC dc_ccp_vlc;
static VLC ac_ccp_vlc;
static VLC asv2_level_vlc;
static VLCElem ccp_vlc[32];
static VLCElem level_vlc[16];
static VLCElem dc_ccp_vlc[16];
static VLCElem ac_ccp_vlc[64];
static VLCElem asv2_level_vlc[1024];
typedef struct ASVDecContext {
ASVCommonContext c;
@ -67,26 +67,26 @@ typedef struct ASVDecContext {
static av_cold void init_vlcs(void)
{
VLC_INIT_STATIC(&ccp_vlc, CCP_VLC_BITS, 17,
&ff_asv_ccp_tab[0][1], 2, 1,
&ff_asv_ccp_tab[0][0], 2, 1, 32);
VLC_INIT_LE_STATIC(&dc_ccp_vlc, DC_CCP_VLC_BITS, 8,
&ff_asv_dc_ccp_tab[0][1], 2, 1,
&ff_asv_dc_ccp_tab[0][0], 2, 1, 16);
VLC_INIT_LE_STATIC(&ac_ccp_vlc, AC_CCP_VLC_BITS, 16,
&ff_asv_ac_ccp_tab[0][1], 2, 1,
&ff_asv_ac_ccp_tab[0][0], 2, 1, 64);
VLC_INIT_STATIC(&level_vlc, ASV1_LEVEL_VLC_BITS, 7,
&ff_asv_level_tab[0][1], 2, 1,
&ff_asv_level_tab[0][0], 2, 1, 16);
VLC_INIT_LE_STATIC(&asv2_level_vlc, ASV2_LEVEL_VLC_BITS, 63,
&ff_asv2_level_tab[0][1], 4, 2,
&ff_asv2_level_tab[0][0], 4, 2, 1024);
VLC_INIT_STATIC_TABLE(ccp_vlc, CCP_VLC_BITS, 17,
&ff_asv_ccp_tab[0][1], 2, 1,
&ff_asv_ccp_tab[0][0], 2, 1, 0);
VLC_INIT_STATIC_TABLE(dc_ccp_vlc, DC_CCP_VLC_BITS, 8,
&ff_asv_dc_ccp_tab[0][1], 2, 1,
&ff_asv_dc_ccp_tab[0][0], 2, 1, VLC_INIT_LE);
VLC_INIT_STATIC_TABLE(ac_ccp_vlc, AC_CCP_VLC_BITS, 16,
&ff_asv_ac_ccp_tab[0][1], 2, 1,
&ff_asv_ac_ccp_tab[0][0], 2, 1, VLC_INIT_LE);
VLC_INIT_STATIC_TABLE(level_vlc, ASV1_LEVEL_VLC_BITS, 7,
&ff_asv_level_tab[0][1], 2, 1,
&ff_asv_level_tab[0][0], 2, 1, 0);
VLC_INIT_STATIC_TABLE(asv2_level_vlc, ASV2_LEVEL_VLC_BITS, 63,
&ff_asv2_level_tab[0][1], 4, 2,
&ff_asv2_level_tab[0][0], 4, 2, VLC_INIT_LE);
}
static inline int asv1_get_level(GetBitContext *gb)
{
int code = get_vlc2(gb, level_vlc.table, ASV1_LEVEL_VLC_BITS, 1);
int code = get_vlc2(gb, level_vlc, ASV1_LEVEL_VLC_BITS, 1);
if (code == 3)
return get_sbits(gb, 8);
@ -115,7 +115,7 @@ static inline int asv2_get_vlc2(GetBitContext *gb, const VLCElem *table, int bit
static inline int asv2_get_level(GetBitContext *gb)
{
int code = asv2_get_vlc2(gb, asv2_level_vlc.table, ASV2_LEVEL_VLC_BITS);
int code = asv2_get_vlc2(gb, asv2_level_vlc, ASV2_LEVEL_VLC_BITS);
if (code == 31)
return (int8_t) get_bits_le(gb, 8);
@ -130,7 +130,7 @@ static inline int asv1_decode_block(ASVDecContext *a, int16_t block[64])
block[0] = 8 * get_bits(&a->gb, 8);
for (i = 0; i < 11; i++) {
const int ccp = get_vlc2(&a->gb, ccp_vlc.table, CCP_VLC_BITS, 1);
const int ccp = get_vlc2(&a->gb, ccp_vlc, CCP_VLC_BITS, 1);
if (ccp) {
if (ccp == 16)
@ -162,7 +162,7 @@ static inline int asv2_decode_block(ASVDecContext *a, int16_t block[64])
block[0] = 8 * get_bits_le(&a->gb, 8);
ccp = asv2_get_vlc2(&a->gb, dc_ccp_vlc.table, DC_CCP_VLC_BITS);
ccp = asv2_get_vlc2(&a->gb, dc_ccp_vlc, DC_CCP_VLC_BITS);
if (ccp) {
if (ccp & 4)
block[a->permutated_scantable[1]] = (asv2_get_level(&a->gb) * a->intra_matrix[1]) >> 4;
@ -173,7 +173,7 @@ static inline int asv2_decode_block(ASVDecContext *a, int16_t block[64])
}
for (i = 1; i < count + 1; i++) {
const int ccp = asv2_get_vlc2(&a->gb, ac_ccp_vlc.table, AC_CCP_VLC_BITS);
const int ccp = asv2_get_vlc2(&a->gb, ac_ccp_vlc, AC_CCP_VLC_BITS);
if (ccp) {
if (ccp & 8)