RepoMirrors
/
ffmpeg
mirror of https://git.ffmpeg.org/ffmpeg.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

avcodec/speedhqdec: Avoid unnecessary VLC structure 

Everything besides VLC.table is basically write-only
and even VLC.table can be removed by accessing the
underlying table directly.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2023-09-24 16:07:37 +02:00
parent 0a610e22c1
commit fd4cb6ebee
1 changed files with 26 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

52
libavcodec/speedhqdec.c
View File

@ -71,10 +71,10 @@ static const uint8_t unscaled_quant_matrix[64] = {
27, 29, 35, 38, 46, 56, 69, 83
};
static VLC dc_lum_vlc_le;
static VLC dc_chroma_vlc_le;
static VLC dc_alpha_run_vlc_le;
static VLC dc_alpha_level_vlc_le;
static VLCElem dc_lum_vlc_le[512];
static VLCElem dc_chroma_vlc_le[514];
static VLCElem dc_alpha_run_vlc_le[160];
static VLCElem dc_alpha_level_vlc_le[288];
static RL_VLC_ELEM speedhq_rl_vlc[674];
@ -83,9 +83,9 @@ static inline int decode_dc_le(GetBitContext *gb, int component)
int code, diff;
if (component == 0 || component == 3) {
code = get_vlc2(gb, dc_lum_vlc_le.table, DC_VLC_BITS, 2);
code = get_vlc2(gb, dc_lum_vlc_le, DC_VLC_BITS, 2);
} else {
code = get_vlc2(gb, dc_chroma_vlc_le.table, DC_VLC_BITS, 2);
code = get_vlc2(gb, dc_chroma_vlc_le, DC_VLC_BITS, 2);
}
if (!code) {
diff = 0;
@ -109,7 +109,7 @@ static inline int decode_alpha_block(const SHQContext *s, GetBitContext *gb, uin
int run, level;
UPDATE_CACHE_LE(re, gb);
GET_VLC(run, re, gb, dc_alpha_run_vlc_le.table, ALPHA_VLC_BITS, 2);
GET_VLC(run, re, gb, dc_alpha_run_vlc_le, ALPHA_VLC_BITS, 2);
if (run < 0) break;
i += run;
@ -117,7 +117,7 @@ static inline int decode_alpha_block(const SHQContext *s, GetBitContext *gb, uin
return AVERROR_INVALIDDATA;
UPDATE_CACHE_LE(re, gb);
GET_VLC(level, re, gb, dc_alpha_level_vlc_le.table, ALPHA_VLC_BITS, 2);
GET_VLC(level, re, gb, dc_alpha_level_vlc_le, ALPHA_VLC_BITS, 2);
block[i++] = level;
}
@ -506,11 +506,11 @@ static av_cold void compute_alpha_vlcs(void)
av_assert0(entry == FF_ARRAY_ELEMS(run_code));
VLC_INIT_LE_SPARSE_STATIC(&dc_alpha_run_vlc_le, ALPHA_VLC_BITS,
FF_ARRAY_ELEMS(run_code),
run_bits, 1, 1,
run_code, 2, 2,
run_symbols, 2, 2, 160);
VLC_INIT_STATIC_SPARSE_TABLE(dc_alpha_run_vlc_le, ALPHA_VLC_BITS,
FF_ARRAY_ELEMS(run_code),
run_bits, 1, 1,
run_code, 2, 2,
run_symbols, 2, 2, VLC_INIT_LE);
/* Initialize VLC for alpha level. */
entry = 0;
@ -546,24 +546,24 @@ static av_cold void compute_alpha_vlcs(void)
av_assert0(entry == FF_ARRAY_ELEMS(level_code));
VLC_INIT_LE_SPARSE_STATIC(&dc_alpha_level_vlc_le, ALPHA_VLC_BITS,
FF_ARRAY_ELEMS(level_code),
level_bits, 1, 1,
level_code, 2, 2,
level_symbols, 2, 2, 288);
VLC_INIT_STATIC_SPARSE_TABLE(dc_alpha_level_vlc_le, ALPHA_VLC_BITS,
FF_ARRAY_ELEMS(level_code),
level_bits, 1, 1,
level_code, 2, 2,
level_symbols, 2, 2, VLC_INIT_LE);
}
static av_cold void speedhq_static_init(void)
{
/* Exactly the same as MPEG-2, except for a little-endian reader. */
VLC_INIT_CUSTOM_STATIC(&dc_lum_vlc_le, DC_VLC_BITS, 12,
ff_mpeg12_vlc_dc_lum_bits, 1, 1,
ff_mpeg12_vlc_dc_lum_code, 2, 2,
VLC_INIT_OUTPUT_LE, 512);
VLC_INIT_CUSTOM_STATIC(&dc_chroma_vlc_le, DC_VLC_BITS, 12,
ff_mpeg12_vlc_dc_chroma_bits, 1, 1,
ff_mpeg12_vlc_dc_chroma_code, 2, 2,
VLC_INIT_OUTPUT_LE, 514);
VLC_INIT_STATIC_TABLE(dc_lum_vlc_le, DC_VLC_BITS, 12,
ff_mpeg12_vlc_dc_lum_bits, 1, 1,
ff_mpeg12_vlc_dc_lum_code, 2, 2,
VLC_INIT_OUTPUT_LE);
VLC_INIT_STATIC_TABLE(dc_chroma_vlc_le, DC_VLC_BITS, 12,
ff_mpeg12_vlc_dc_chroma_bits, 1, 1,
ff_mpeg12_vlc_dc_chroma_code, 2, 2,
VLC_INIT_OUTPUT_LE);
ff_init_2d_vlc_rl(ff_speedhq_vlc_table, speedhq_rl_vlc, ff_speedhq_run,
ff_speedhq_level, SPEEDHQ_RL_NB_ELEMS,