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author | Reimar Döffinger <Reimar.Doeffinger@gmx.de> | 2016-03-06 17:28:42 +0100 |
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committer | Reimar Döffinger <Reimar.Doeffinger@gmx.de> | 2016-03-08 23:56:51 +0100 |
commit | b91e3763905ad95602f2b4e91d37415692573248 (patch) | |
tree | e1d41e6d4d080ab85612d599c43d21608920f434 /libavcodec/aacenc.c | |
parent | b3e0371818917364be0b2f4b24831b4ed987392f (diff) | |
download | ffmpeg-b91e3763905ad95602f2b4e91d37415692573248.tar.gz |
aacenc: use generational cache instead of resetting.
Approximately 11% faster transcoding from mp3 with
default settings.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
Diffstat (limited to 'libavcodec/aacenc.c')
-rw-r--r-- | libavcodec/aacenc.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/libavcodec/aacenc.c b/libavcodec/aacenc.c index 5a70da1764..023260a7ae 100644 --- a/libavcodec/aacenc.c +++ b/libavcodec/aacenc.c @@ -78,11 +78,10 @@ static void put_audio_specific_config(AVCodecContext *avctx) void ff_quantize_band_cost_cache_init(struct AACEncContext *s) { - int sf, g; - for (sf = 0; sf < 256; sf++) { - for (g = 0; g < 128; g++) { - s->quantize_band_cost_cache[sf][g].bits = -1; - } + ++s->quantize_band_cost_cache_generation; + if (s->quantize_band_cost_cache_generation == 0) { + memset(s->quantize_band_cost_cache, 0, sizeof(s->quantize_band_cost_cache)); + s->quantize_band_cost_cache_generation = 1; } } |