replaygain_synthesis.h
资源名称:tcpmp.rar [点击查看]
上传用户:wstnjxml
上传日期:2014-04-03
资源大小:7248k
文件大小:2k
源码类别:
Windows CE
开发平台:
C/C++
- /* replaygain_synthesis - Routines for applying ReplayGain to a signal
- * Copyright (C) 2002,2003,2004,2005 Josh Coalson
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
- #ifndef FLAC__SHARE__REPLAYGAIN_SYNTHESIS_H
- #define FLAC__SHARE__REPLAYGAIN_SYNTHESIS_H
- #include <stdlib.h> /* for size_t */
- #include "FLAC/ordinals.h"
- #define FLAC_SHARE__MAX_SUPPORTED_CHANNELS 2
- typedef enum {
- NOISE_SHAPING_NONE = 0,
- NOISE_SHAPING_LOW = 1,
- NOISE_SHAPING_MEDIUM = 2,
- NOISE_SHAPING_HIGH = 3
- } NoiseShaping;
- typedef struct {
- const float* FilterCoeff;
- FLAC__uint64 Mask;
- double Add;
- float Dither;
- float ErrorHistory [FLAC_SHARE__MAX_SUPPORTED_CHANNELS] [16]; /* 16th order Noise shaping */
- float DitherHistory [FLAC_SHARE__MAX_SUPPORTED_CHANNELS] [16];
- int LastRandomNumber [FLAC_SHARE__MAX_SUPPORTED_CHANNELS];
- unsigned LastHistoryIndex;
- NoiseShaping ShapingType;
- } DitherContext;
- void FLAC__replaygain_synthesis__init_dither_context(DitherContext *dither, int bits, int shapingtype);
- /* scale = (float) pow(10., (double)replaygain * 0.05); */
- size_t FLAC__replaygain_synthesis__apply_gain(FLAC__byte *data_out, FLAC__bool little_endian_data_out, FLAC__bool unsigned_data_out, const FLAC__int32 * const input[], unsigned wide_samples, unsigned channels, const unsigned source_bps, const unsigned target_bps, const double scale, const FLAC__bool hard_limit, FLAC__bool do_dithering, DitherContext *dither_context);
- #endif