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| author | Justin Ruggles <justin.ruggles@gmail.com> | 2011-01-15 01:58:45 +0000 |
|---|---|---|
| committer | Justin Ruggles <justin.ruggles@gmail.com> | 2011-01-15 01:58:45 +0000 |
| commit | 7cc4be58b4daecd256deba31e5caf5bb11870f15 (patch) | |
| tree | d5ce20d13a6ac027ce43a19d76a5f3c12ab5da32 | |
| parent | d881a0e89548abaafb8466192923fb10905dabef (diff) | |
| download | ffmpeg-7cc4be58b4daecd256deba31e5caf5bb11870f15.tar.gz | |
Rearrange exponent buffer to group all blocks for a single channel together.
This will allow for faster and simpler processing of all blocks at once.
Originally committed as revision 26351 to svn://svn.ffmpeg.org/ffmpeg/trunk
| -rw-r--r-- | libavcodec/ac3enc.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/libavcodec/ac3enc.c b/libavcodec/ac3enc.c index f96883464f..1a87bb9a0f 100644 --- a/libavcodec/ac3enc.c +++ b/libavcodec/ac3enc.c @@ -1757,14 +1757,17 @@ static av_cold int allocate_buffers(AVCodecContext *avctx) alloc_fail); for (ch = 0; ch < s->channels; ch++) { + /* arrangement: block, channel, coeff */ block->bap[ch] = &s->bap_buffer [AC3_MAX_COEFS * (blk * s->channels + ch)]; block->mdct_coef[ch] = &s->mdct_coef_buffer [AC3_MAX_COEFS * (blk * s->channels + ch)]; - block->exp[ch] = &s->exp_buffer [AC3_MAX_COEFS * (blk * s->channels + ch)]; block->grouped_exp[ch] = &s->grouped_exp_buffer[128 * (blk * s->channels + ch)]; block->psd[ch] = &s->psd_buffer [AC3_MAX_COEFS * (blk * s->channels + ch)]; block->band_psd[ch] = &s->band_psd_buffer [64 * (blk * s->channels + ch)]; block->mask[ch] = &s->mask_buffer [64 * (blk * s->channels + ch)]; block->qmant[ch] = &s->qmant_buffer [AC3_MAX_COEFS * (blk * s->channels + ch)]; + + /* arrangement: channel, block, coeff */ + block->exp[ch] = &s->exp_buffer [AC3_MAX_COEFS * (AC3_MAX_BLOCKS * ch + blk)]; } } |