mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-18 03:19:31 +02:00
b91e376390
Approximately 11% faster transcoding from mp3 with default settings. Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
54 lines
2.0 KiB
C
54 lines
2.0 KiB
C
/*
|
|
* AAC encoder quantization
|
|
* Copyright (C) 2015 Claudio Freire
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* AAC encoder quantization misc reusable function templates
|
|
* @author Claudio Freire ( klaussfreire gmail com )
|
|
*/
|
|
|
|
#ifndef AVCODEC_AACENC_QUANTIZATION_MISC_H
|
|
#define AVCODEC_AACENC_QUANTIZATION_MISC_H
|
|
|
|
static inline float quantize_band_cost_cached(struct AACEncContext *s, int w, int g, const float *in,
|
|
const float *scaled, int size, int scale_idx,
|
|
int cb, const float lambda, const float uplim,
|
|
int *bits, float *energy, int rtz)
|
|
{
|
|
AACQuantizeBandCostCacheEntry *entry;
|
|
av_assert1(scale_idx >= 0 && scale_idx < 256);
|
|
entry = &s->quantize_band_cost_cache[scale_idx][w*16+g];
|
|
if (entry->generation != s->quantize_band_cost_cache_generation || entry->cb != cb || entry->rtz != rtz) {
|
|
entry->rd = quantize_band_cost(s, in, scaled, size, scale_idx,
|
|
cb, lambda, uplim, &entry->bits, &entry->energy, rtz);
|
|
entry->cb = cb;
|
|
entry->rtz = rtz;
|
|
entry->generation = s->quantize_band_cost_cache_generation;
|
|
}
|
|
if (bits)
|
|
*bits = entry->bits;
|
|
if (energy)
|
|
*energy = entry->energy;
|
|
return entry->rd;
|
|
}
|
|
|
|
#endif /* AVCODEC_AACENC_QUANTIZATION_MISC_H */
|