aac5773f
 hucm
功能基本完成，接口待打磨
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/*
* 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 */
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