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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>
oldabi
Mans Rullgard 14 years ago
parent 611a6f59ce
commit f162e988aa
4 changed files with 0 additions and 60 deletions
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  1. 8
      libavcodec/aacdec.c
  2. 32
      libavcodec/mpeg12.c
  3. 10
      libavcodec/mpeg4videodec.c
  4. 10
      libavcodec/msmpeg4.c

8
libavcodec/aacdec.c
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@ -1062,9 +1062,6 @@ static int decode_spectrum_and_dequant(AACContext *ac, float coef[1024],
UPDATE_CACHE(re, gb);
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];
nnz = cb_idx >> 8 & 15;
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;
}
#if MIN_CACHE_BITS < 21
LAST_SKIP_BITS(re, gb, b + 1);
UPDATE_CACHE(re, gb);
#else
SKIP_BITS(re, gb, b + 1);
#endif
b += 4;
n = (1 << b) + SHOW_UBITS(re, gb, b);
LAST_SKIP_BITS(re, gb, b);

32
libavcodec/mpeg12.c
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@ -718,9 +718,6 @@ static inline int mpeg1_decode_block_inter(MpegEncContext *s,
if(((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
goto end;
}
#if MIN_CACHE_BITS < 19
UPDATE_CACHE(re, &s->gb);
#endif
/* now quantify & encode AC coefficients */
for(;;) {
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;
#if MIN_CACHE_BITS < 19
UPDATE_CACHE(re, &s->gb);
#endif
if(((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
break;
#if MIN_CACHE_BITS >= 19
UPDATE_CACHE(re, &s->gb);
#endif
}
end:
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)
goto end;
}
#if MIN_CACHE_BITS < 19
UPDATE_CACHE(re, &s->gb);
#endif
/* now quantify & encode AC coefficients */
for(;;) {
@ -839,14 +828,9 @@ static inline int mpeg1_fast_decode_block_inter(MpegEncContext *s, DCTELEM *bloc
}
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)
break;
#if MIN_CACHE_BITS >= 19
UPDATE_CACHE(re, &s->gb);
#endif
}
end:
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)
goto end;
}
#if MIN_CACHE_BITS < 19
UPDATE_CACHE(re, &s->gb);
#endif
/* now quantify & encode AC coefficients */
for(;;) {
@ -927,14 +908,9 @@ static inline int mpeg2_decode_block_non_intra(MpegEncContext *s,
mismatch ^= 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)
break;
#if MIN_CACHE_BITS >= 19
UPDATE_CACHE(re, &s->gb);
#endif
}
end:
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)
goto end;
}
#if MIN_CACHE_BITS < 19
UPDATE_CACHE(re, &s->gb);
#endif
/* now quantify & encode AC coefficients */
for(;;) {
@ -1000,14 +973,9 @@ static inline int mpeg2_fast_decode_block_non_intra(MpegEncContext *s,
}
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)
break;
#if MIN_CACHE_BITS >=19
UPDATE_CACHE(re, &s->gb);
#endif
}
end:
LAST_SKIP_BITS(re, &s->gb, 2);

10
libavcodec/mpeg4videodec.c
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@ -1023,12 +1023,7 @@ static inline int mpeg4_decode_block(MpegEncContext * s, DCTELEM * block,
if(last) i+=192;
} else {
/* 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);
#endif
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
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 {
/* 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);
#endif
GET_RL_VLC(level, run, re, &s->gb, rl_vlc, TEX_VLC_BITS, 2, 1);
i+= run;
level = level + rl->max_level[run>>7][(run-1)&63] * qmul;//FIXME opt indexing

10
libavcodec/msmpeg4.c
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@ -1797,12 +1797,7 @@ int ff_msmpeg4_decode_block(MpegEncContext * s, DCTELEM * block,
#endif
} else {
/* 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);
#endif
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
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 {
/* 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);
#endif
GET_RL_VLC(level, run, re, &s->gb, rl_vlc, TEX_VLC_BITS, 2, 1);
i+= run;
level = level + rl->max_level[run>>7][(run-1)&63] * qmul;//FIXME opt indexing

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