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| author | Justin Ruggles <justin.ruggles@gmail.com> | 2008-08-17 17:41:48 +0000 |
|---|---|---|
| committer | Justin Ruggles <justin.ruggles@gmail.com> | 2008-08-17 17:41:48 +0000 |
| commit | ec0350c983c34d008fd10f07366abd80c19d06e0 (patch) | |
| tree | 2a88493c98e2b5caba6c1ce90d5362043d31b6ac /libavcodec/ac3dec.c | |
| parent | defa0cd6f53c5696a999198009b8e0fc662ff2ae (diff) | |
use LFG instead of Mersenne Twister for AC-3 PRNG
Originally committed as revision 14815 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/ac3dec.c')
| -rw-r--r-- | libavcodec/ac3dec.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/libavcodec/ac3dec.c b/libavcodec/ac3dec.c index 96296f2922..e8477d7ad3 100644 --- a/libavcodec/ac3dec.c +++ b/libavcodec/ac3dec.c @@ -33,7 +33,6 @@ #include <string.h> #include "libavutil/crc.h" -#include "libavutil/random.h" #include "avcodec.h" #include "ac3_parser.h" #include "bitstream.h" @@ -198,7 +197,7 @@ static av_cold int ac3_decode_init(AVCodecContext *avctx) ff_mdct_init(&s->imdct_512, 9, 1); ff_kbd_window_init(s->window, 5.0, 256); dsputil_init(&s->dsp, avctx); - av_init_random(0, &s->dith_state); + av_lfg_init(&s->dith_state, 0); /* set bias values for float to int16 conversion */ if(s->dsp.float_to_int16_interleave == ff_float_to_int16_interleave_c) { @@ -450,7 +449,7 @@ static void get_transform_coeffs_ch(AC3DecodeContext *s, int ch_index, mant_grou tbap = bap[i]; switch (tbap) { case 0: - coeffs[i] = (av_random(&s->dith_state) & 0x7FFFFF) - 0x400000; + coeffs[i] = (av_lfg_get(&s->dith_state) & 0x7FFFFF) - 0x400000; break; case 1: |