FFmpeg
aacenc_quantization_misc.h
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1 /*
2  * AAC encoder quantization
3  * Copyright (C) 2015 Claudio Freire
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 /**
23  * @file
24  * AAC encoder quantization misc reusable function templates
25  * @author Claudio Freire ( klaussfreire gmail com )
26  */
27 
28 #ifndef AVCODEC_AACENC_QUANTIZATION_MISC_H
29 #define AVCODEC_AACENC_QUANTIZATION_MISC_H
30 
31 static inline float quantize_band_cost_cached(struct AACEncContext *s, int w, int g, const float *in,
32  const float *scaled, int size, int scale_idx,
33  int cb, const float lambda, const float uplim,
34  int *bits, float *energy, int rtz)
35 {
37  av_assert1(scale_idx >= 0 && scale_idx < 256);
38  entry = &s->quantize_band_cost_cache[scale_idx][w*16+g];
39  if (entry->generation != s->quantize_band_cost_cache_generation || entry->cb != cb || entry->rtz != rtz) {
40  entry->rd = quantize_band_cost(s, in, scaled, size, scale_idx,
41  cb, lambda, uplim, &entry->bits, &entry->energy, rtz);
42  entry->cb = cb;
43  entry->rtz = rtz;
44  entry->generation = s->quantize_band_cost_cache_generation;
45  }
46  if (bits)
47  *bits = entry->bits;
48  if (energy)
49  *energy = entry->energy;
50  return entry->rd;
51 }
52 
53 #endif /* AVCODEC_AACENC_QUANTIZATION_MISC_H */
AACQuantizeBandCostCacheEntry
Definition: aacenc.h:86
AACQuantizeBandCostCacheEntry::cb
char cb
Definition: aacenc.h:90
cb
static double cb(void *priv, double x, double y)
Definition: vf_geq.c:215
w
uint8_t w
Definition: llviddspenc.c:39
AACQuantizeBandCostCacheEntry::generation
uint16_t generation
Definition: aacenc.h:92
s
#define s(width, name)
Definition: cbs_vp9.c:257
g
const char * g
Definition: vf_curves.c:117
bits
uint8_t bits
Definition: vp3data.h:141
AACQuantizeBandCostCacheEntry::energy
float energy
Definition: aacenc.h:88
quantize_band_cost_cached
static 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)
Definition: aacenc_quantization_misc.h:31
size
int size
Definition: twinvq_data.h:10344
AACQuantizeBandCostCacheEntry::rd
float rd
Definition: aacenc.h:87
av_assert1
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Definition: avassert.h:53
AACQuantizeBandCostCacheEntry::bits
int bits
Definition: aacenc.h:89
AACEncContext
AAC encoder context.
Definition: aacenc.h:378
AACQuantizeBandCostCacheEntry::rtz
char rtz
Definition: aacenc.h:91
quantize_band_cost
static float quantize_band_cost(struct AACEncContext *s, 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)
Definition: aacenc_quantization.h:250
AACEncContext::lambda
float lambda
Definition: aacenc.h:402