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| author | Michael Niedermayer <michaelni@gmx.at> | 2009-11-07 20:10:02 +0000 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2009-11-07 20:10:02 +0000 |
| commit | f3001e0deeacbfb0966b5d59bb1e0318f0eee4fc (patch) | |
| tree | d8735f5fb305e85655262dba2b95fd944980a943 | |
| parent | 2e0a80a12870948397a2dfea48788be4586f83b0 (diff) | |
| download | ffmpeg-f3001e0deeacbfb0966b5d59bb1e0318f0eee4fc.tar.gz | |
Simpliy exp*table init, based on patch by reimar.
Originally committed as revision 20470 to svn://svn.ffmpeg.org/ffmpeg/trunk
| -rw-r--r-- | libavcodec/mpegaudio_tablegen.h | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/libavcodec/mpegaudio_tablegen.h b/libavcodec/mpegaudio_tablegen.h index 362c30b4be..9c9ab49665 100644 --- a/libavcodec/mpegaudio_tablegen.h +++ b/libavcodec/mpegaudio_tablegen.h @@ -40,7 +40,7 @@ static uint32_t expval_table[512][16]; static void mpegaudio_tableinit(void) { - int i; + int i, value, exponent; for(i=1;i<TABLE_4_3_SIZE;i++) { double value = i/4; double f, fm; @@ -54,13 +54,13 @@ static void mpegaudio_tableinit(void) table_4_3_value[i] = m; table_4_3_exp[i] = -e; } - for(i=0; i<512*16; i++){ - double value = i & 15; - int exponent= (i>>4); - double f= value * cbrtf(value) * pow(2, (exponent-400)*0.25 + FRAC_BITS + 5); - expval_table[exponent][i&15]= llrint(f); - if((i&15)==1) - exp_table[exponent]= llrint(f); + for(exponent=0; exponent<512; exponent++) { + for(value=0; value<16; value++) { + int i= value + 16*exponent; + double f= (double)value * cbrtf(value) * pow(2, (exponent-400)*0.25 + FRAC_BITS + 5); + expval_table[exponent][value]= llrint(f); + } + exp_table[exponent]= expval_table[exponent][1]; } } #endif /* CONFIG_HARDCODED_TABLES */ |