| /* grabbag - Convenience lib for various routines common to several tools |
| * Copyright (C) 2002-2009 Josh Coalson |
| * Copyright (C) 2011-2013 Xiph.Org Foundation |
| * |
| * This library 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. |
| * |
| * This library 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 this library; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| /* |
| * This wraps the replaygain_analysis lib, which is LGPL. This wrapper |
| * allows analysis of different input resolutions by automatically |
| * scaling the input signal |
| */ |
| |
| /* This .h cannot be included by itself; #include "share/grabbag.h" instead. */ |
| |
| #ifndef GRABBAG__REPLAYGAIN_H |
| #define GRABBAG__REPLAYGAIN_H |
| |
| #include "FLAC/metadata.h" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| extern const unsigned GRABBAG__REPLAYGAIN_MAX_TAG_SPACE_REQUIRED; |
| |
| extern const FLAC__byte * const GRABBAG__REPLAYGAIN_TAG_REFERENCE_LOUDNESS; /* = "REPLAYGAIN_REFERENCE_LOUDNESS" */ |
| extern const FLAC__byte * const GRABBAG__REPLAYGAIN_TAG_TITLE_GAIN; /* = "REPLAYGAIN_TRACK_GAIN" */ |
| extern const FLAC__byte * const GRABBAG__REPLAYGAIN_TAG_TITLE_PEAK; /* = "REPLAYGAIN_TRACK_PEAK" */ |
| extern const FLAC__byte * const GRABBAG__REPLAYGAIN_TAG_ALBUM_GAIN; /* = "REPLAYGAIN_ALBUM_GAIN" */ |
| extern const FLAC__byte * const GRABBAG__REPLAYGAIN_TAG_ALBUM_PEAK; /* = "REPLAYGAIN_ALBUM_PEAK" */ |
| |
| FLAC__bool grabbag__replaygain_is_valid_sample_frequency(unsigned sample_frequency); |
| |
| FLAC__bool grabbag__replaygain_init(unsigned sample_frequency); |
| |
| /* 'bps' must be valid for FLAC, i.e. >=4 and <= 32 */ |
| FLAC__bool grabbag__replaygain_analyze(const FLAC__int32 * const input[], FLAC__bool is_stereo, unsigned bps, unsigned samples); |
| |
| void grabbag__replaygain_get_album(float *gain, float *peak); |
| void grabbag__replaygain_get_title(float *gain, float *peak); |
| |
| /* These three functions return an error string on error, or NULL if successful */ |
| const char *grabbag__replaygain_analyze_file(const char *filename, float *title_gain, float *title_peak); |
| const char *grabbag__replaygain_store_to_vorbiscomment(FLAC__StreamMetadata *block, float album_gain, float album_peak, float title_gain, float title_peak); |
| const char *grabbag__replaygain_store_to_vorbiscomment_reference(FLAC__StreamMetadata *block); |
| const char *grabbag__replaygain_store_to_vorbiscomment_album(FLAC__StreamMetadata *block, float album_gain, float album_peak); |
| const char *grabbag__replaygain_store_to_vorbiscomment_title(FLAC__StreamMetadata *block, float title_gain, float title_peak); |
| const char *grabbag__replaygain_store_to_file(const char *filename, float album_gain, float album_peak, float title_gain, float title_peak, FLAC__bool preserve_modtime); |
| const char *grabbag__replaygain_store_to_file_reference(const char *filename, FLAC__bool preserve_modtime); |
| const char *grabbag__replaygain_store_to_file_album(const char *filename, float album_gain, float album_peak, FLAC__bool preserve_modtime); |
| const char *grabbag__replaygain_store_to_file_title(const char *filename, float title_gain, float title_peak, FLAC__bool preserve_modtime); |
| |
| FLAC__bool grabbag__replaygain_load_from_vorbiscomment(const FLAC__StreamMetadata *block, FLAC__bool album_mode, FLAC__bool strict, double *reference, double *gain, double *peak); |
| double grabbag__replaygain_compute_scale_factor(double peak, double gain, double preamp, FLAC__bool prevent_clipping); |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif |