libavcodec/aacenc_quantization.h

   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
  37 float ff_quantize_and_encode_band_cost(AACEncContext *s, PutBitContext *pb,
  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
  66 #include "aacenc_quantization_misc.h"
  67
  68 #endif /* AVCODEC_AACENC_QUANTIZATION_H */