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Remove redundant checks against MIN_CACHE_BITS

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With the removal of the libmpeg2 bitstream reader, MIN_CACHE_BITS
is always >= 25, so tests against smaller values can be removed.

Signed-off-by: Mans Rullgard <mans@mansr.com>
(cherry picked from commit f162e988aa)
This commit is contained in:
Mans Rullgard 2011-01-23 02:22:34 +00:00 committed by Michael Niedermayer
parent a4bff12cdd
commit 91d51ee4b5
4 changed files with 0 additions and 60 deletions
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8
libavcodec/aacdec.c
View File

@ -1062,9 +1062,6 @@ static int decode_spectrum_and_dequant(AACContext *ac, float coef[1024],
UPDATE_CACHE(re, gb); UPDATE_CACHE(re, gb);
GET_VLC(code, re, gb, vlc_tab, 8, 2); GET_VLC(code, re, gb, vlc_tab, 8, 2);
#if MIN_CACHE_BITS < 20
UPDATE_CACHE(re, gb);
#endif
cb_idx = cb_vector_idx[code]; cb_idx = cb_vector_idx[code];
nnz = cb_idx >> 8 & 15; nnz = cb_idx >> 8 & 15;
bits = SHOW_UBITS(re, gb, nnz) << (32-nnz); bits = SHOW_UBITS(re, gb, nnz) << (32-nnz);
@ -1157,12 +1154,7 @@ static int decode_spectrum_and_dequant(AACContext *ac, float coef[1024],
return -1; return -1;
} }
#if MIN_CACHE_BITS < 21
LAST_SKIP_BITS(re, gb, b + 1);
UPDATE_CACHE(re, gb);
#else
SKIP_BITS(re, gb, b + 1); SKIP_BITS(re, gb, b + 1);
#endif
b += 4; b += 4;
n = (1 << b) + SHOW_UBITS(re, gb, b); n = (1 << b) + SHOW_UBITS(re, gb, b);
LAST_SKIP_BITS(re, gb, b); LAST_SKIP_BITS(re, gb, b);

32
libavcodec/mpeg12.c
View File

@ -718,9 +718,6 @@ static inline int mpeg1_decode_block_inter(MpegEncContext *s,
if(((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF) if(((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
goto end; goto end;
} }
#if MIN_CACHE_BITS < 19
UPDATE_CACHE(re, &s->gb);
#endif
/* now quantify & encode AC coefficients */ /* now quantify & encode AC coefficients */
for(;;) { for(;;) {
GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0); GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
@ -760,14 +757,9 @@ static inline int mpeg1_decode_block_inter(MpegEncContext *s,
} }
block[j] = level; block[j] = level;
#if MIN_CACHE_BITS < 19
UPDATE_CACHE(re, &s->gb);
#endif
if(((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF) if(((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
break; break;
#if MIN_CACHE_BITS >= 19
UPDATE_CACHE(re, &s->gb); UPDATE_CACHE(re, &s->gb);
#endif
} }
end: end:
LAST_SKIP_BITS(re, &s->gb, 2); LAST_SKIP_BITS(re, &s->gb, 2);
@ -800,9 +792,6 @@ static inline int mpeg1_fast_decode_block_inter(MpegEncContext *s, DCTELEM *bloc
if(((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF) if(((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
goto end; goto end;
} }
#if MIN_CACHE_BITS < 19
UPDATE_CACHE(re, &s->gb);
#endif
/* now quantify & encode AC coefficients */ /* now quantify & encode AC coefficients */
for(;;) { for(;;) {
@ -839,14 +828,9 @@ static inline int mpeg1_fast_decode_block_inter(MpegEncContext *s, DCTELEM *bloc
} }
block[j] = level; block[j] = level;
#if MIN_CACHE_BITS < 19
UPDATE_CACHE(re, &s->gb);
#endif
if(((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF) if(((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
break; break;
#if MIN_CACHE_BITS >= 19
UPDATE_CACHE(re, &s->gb); UPDATE_CACHE(re, &s->gb);
#endif
} }
end: end:
LAST_SKIP_BITS(re, &s->gb, 2); LAST_SKIP_BITS(re, &s->gb, 2);
@ -891,9 +875,6 @@ static inline int mpeg2_decode_block_non_intra(MpegEncContext *s,
if(((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF) if(((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
goto end; goto end;
} }
#if MIN_CACHE_BITS < 19
UPDATE_CACHE(re, &s->gb);
#endif
/* now quantify & encode AC coefficients */ /* now quantify & encode AC coefficients */
for(;;) { for(;;) {
@ -927,14 +908,9 @@ static inline int mpeg2_decode_block_non_intra(MpegEncContext *s,
mismatch ^= level; mismatch ^= level;
block[j] = level; block[j] = level;
#if MIN_CACHE_BITS < 19
UPDATE_CACHE(re, &s->gb);
#endif
if(((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF) if(((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
break; break;
#if MIN_CACHE_BITS >= 19
UPDATE_CACHE(re, &s->gb); UPDATE_CACHE(re, &s->gb);
#endif
} }
end: end:
LAST_SKIP_BITS(re, &s->gb, 2); LAST_SKIP_BITS(re, &s->gb, 2);
@ -969,9 +945,6 @@ static inline int mpeg2_fast_decode_block_non_intra(MpegEncContext *s,
if(((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF) if(((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
goto end; goto end;
} }
#if MIN_CACHE_BITS < 19
UPDATE_CACHE(re, &s->gb);
#endif
/* now quantify & encode AC coefficients */ /* now quantify & encode AC coefficients */
for(;;) { for(;;) {
@ -1000,14 +973,9 @@ static inline int mpeg2_fast_decode_block_non_intra(MpegEncContext *s,
} }
block[j] = level; block[j] = level;
#if MIN_CACHE_BITS < 19
UPDATE_CACHE(re, &s->gb);
#endif
if(((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF) if(((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
break; break;
#if MIN_CACHE_BITS >=19
UPDATE_CACHE(re, &s->gb); UPDATE_CACHE(re, &s->gb);
#endif
} }
end: end:
LAST_SKIP_BITS(re, &s->gb, 2); LAST_SKIP_BITS(re, &s->gb, 2);

10
libavcodec/mpeg4videodec.c
View File

@ -1023,12 +1023,7 @@ static inline int mpeg4_decode_block(MpegEncContext * s, DCTELEM * block,
if(last) i+=192; if(last) i+=192;
} else { } else {
/* second escape */ /* second escape */
#if MIN_CACHE_BITS < 20
LAST_SKIP_BITS(re, &s->gb, 2);
UPDATE_CACHE(re, &s->gb);
#else
SKIP_BITS(re, &s->gb, 2); SKIP_BITS(re, &s->gb, 2);
#endif
GET_RL_VLC(level, run, re, &s->gb, rl_vlc, TEX_VLC_BITS, 2, 1); GET_RL_VLC(level, run, re, &s->gb, rl_vlc, TEX_VLC_BITS, 2, 1);
i+= run + rl->max_run[run>>7][level/qmul] +1; //FIXME opt indexing i+= run + rl->max_run[run>>7][level/qmul] +1; //FIXME opt indexing
level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1); level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
@ -1036,12 +1031,7 @@ static inline int mpeg4_decode_block(MpegEncContext * s, DCTELEM * block,
} }
} else { } else {
/* first escape */ /* first escape */
#if MIN_CACHE_BITS < 19
LAST_SKIP_BITS(re, &s->gb, 1);
UPDATE_CACHE(re, &s->gb);
#else
SKIP_BITS(re, &s->gb, 1); SKIP_BITS(re, &s->gb, 1);
#endif
GET_RL_VLC(level, run, re, &s->gb, rl_vlc, TEX_VLC_BITS, 2, 1); GET_RL_VLC(level, run, re, &s->gb, rl_vlc, TEX_VLC_BITS, 2, 1);
i+= run; i+= run;
level = level + rl->max_level[run>>7][(run-1)&63] * qmul;//FIXME opt indexing level = level + rl->max_level[run>>7][(run-1)&63] * qmul;//FIXME opt indexing

10
libavcodec/msmpeg4.c
View File

@ -1797,12 +1797,7 @@ int ff_msmpeg4_decode_block(MpegEncContext * s, DCTELEM * block,
#endif #endif
} else { } else {
/* second escape */ /* second escape */
#if MIN_CACHE_BITS < 23
LAST_SKIP_BITS(re, &s->gb, 2);
UPDATE_CACHE(re, &s->gb);
#else
SKIP_BITS(re, &s->gb, 2); SKIP_BITS(re, &s->gb, 2);
#endif
GET_RL_VLC(level, run, re, &s->gb, rl_vlc, TEX_VLC_BITS, 2, 1); GET_RL_VLC(level, run, re, &s->gb, rl_vlc, TEX_VLC_BITS, 2, 1);
i+= run + rl->max_run[run>>7][level/qmul] + run_diff; //FIXME opt indexing i+= run + rl->max_run[run>>7][level/qmul] + run_diff; //FIXME opt indexing
level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1); level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
@ -1816,12 +1811,7 @@ int ff_msmpeg4_decode_block(MpegEncContext * s, DCTELEM * block,
} }
} else { } else {
/* first escape */ /* first escape */
#if MIN_CACHE_BITS < 22
LAST_SKIP_BITS(re, &s->gb, 1);
UPDATE_CACHE(re, &s->gb);
#else
SKIP_BITS(re, &s->gb, 1); SKIP_BITS(re, &s->gb, 1);
#endif
GET_RL_VLC(level, run, re, &s->gb, rl_vlc, TEX_VLC_BITS, 2, 1); GET_RL_VLC(level, run, re, &s->gb, rl_vlc, TEX_VLC_BITS, 2, 1);
i+= run; i+= run;
level = level + rl->max_level[run>>7][(run-1)&63] * qmul;//FIXME opt indexing level = level + rl->max_level[run>>7][(run-1)&63] * qmul;//FIXME opt indexing