FFmpeg
aacenc_quantization.h
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1 /*
2  * AAC encoder quantizer
3  * Copyright (C) 2015 Rostislav Pehlivanov
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 quantizer
25  * @author Rostislav Pehlivanov ( atomnuker gmail com )
26  */
27 
28 #ifndef AVCODEC_AACENC_QUANTIZATION_H
29 #define AVCODEC_AACENC_QUANTIZATION_H
30 
31 #include <stddef.h>
32 
33 #include "aacenc.h"
34 #include "put_bits.h"
35 
36 
38  const float *in, float *quant, const float *scaled,
39  int size, int scale_idx, int cb,
40  const float lambda, const float uplim,
41  int *bits, float *energy);
42 
43 static inline float quantize_band_cost(struct AACEncContext *s, const float *in,
44  const float *scaled, int size, int scale_idx,
45  int cb, const float lambda, const float uplim,
46  int *bits, float *energy)
47 {
48  return ff_quantize_and_encode_band_cost(s, NULL, in, NULL, scaled, size, scale_idx,
49  cb, lambda, uplim, bits, energy);
50 }
51 
52 static inline int quantize_band_cost_bits(struct AACEncContext *s, const float *in,
53  const float *scaled, int size, int scale_idx,
54  int cb, const float lambda, const float uplim,
55  int *bits, float *energy)
56 {
57  int auxbits;
58  ff_quantize_and_encode_band_cost(s, NULL, in, NULL, scaled, size, scale_idx,
59  cb, 0.0f, uplim, &auxbits, energy);
60  if (bits) {
61  *bits = auxbits;
62  }
63  return auxbits;
64 }
65 
67 
68 #endif /* AVCODEC_AACENC_QUANTIZATION_H */
cb
static double cb(void *priv, double x, double y)
Definition: vf_geq.c:239
quantize_band_cost_bits
static int quantize_band_cost_bits(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)
Definition: aacenc_quantization.h:52
quant
static int quant(float coef, const float Q, const float rounding)
Quantize one coefficient.
Definition: aacenc_utils.h:59
s
#define s(width, name)
Definition: cbs_vp9.c:256
ff_quantize_and_encode_band_cost
float ff_quantize_and_encode_band_cost(AACEncContext *s, PutBitContext *pb, const float *in, float *quant, const float *scaled, int size, int scale_idx, int cb, const float lambda, const float uplim, int *bits, float *energy)
Definition: aaccoder.c:269
bits
uint8_t bits
Definition: vp3data.h:141
PutBitContext
Definition: put_bits.h:50
NULL
#define NULL
Definition: coverity.c:32
f
f
Definition: af_crystalizer.c:122
size
int size
Definition: twinvq_data.h:10344
aacenc_quantization_misc.h
AACEncContext
AAC encoder context.
Definition: aacenc.h:108
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)
Definition: aacenc_quantization.h:43
put_bits.h
aacenc.h