| 1 | /* grabbag - Convenience lib for various routines common to several tools |
| 2 | * Copyright (C) 2002-2009 Josh Coalson |
| 3 | * Copyright (C) 2011-2016 Xiph.Org Foundation |
| 4 | * |
| 5 | * This library is free software; you can redistribute it and/or |
| 6 | * modify it under the terms of the GNU Lesser General Public |
| 7 | * License as published by the Free Software Foundation; either |
| 8 | * version 2.1 of the License, or (at your option) any later version. |
| 9 | * |
| 10 | * This library is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | * Lesser General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU Lesser General Public |
| 16 | * License along with this library; if not, write to the Free Software |
| 17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | */ |
| 19 | |
| 20 | /* |
| 21 | * This wraps the replaygain_analysis lib, which is LGPL. This wrapper |
| 22 | * allows analysis of different input resolutions by automatically |
| 23 | * scaling the input signal |
| 24 | */ |
| 25 | |
| 26 | /* This .h cannot be included by itself; #include "share/grabbag.h" instead. */ |
| 27 | |
| 28 | #ifndef GRABBAG__REPLAYGAIN_H |
| 29 | #define GRABBAG__REPLAYGAIN_H |
| 30 | |
| 31 | #include "FLAC/metadata.h" |
| 32 | |
| 33 | #ifdef __cplusplus |
| 34 | extern "C" { |
| 35 | #endif |
| 36 | |
| 37 | extern const unsigned GRABBAG__REPLAYGAIN_MAX_TAG_SPACE_REQUIRED; |
| 38 | |
| 39 | extern const FLAC__byte * const GRABBAG__REPLAYGAIN_TAG_REFERENCE_LOUDNESS; /* = "REPLAYGAIN_REFERENCE_LOUDNESS" */ |
| 40 | extern const FLAC__byte * const GRABBAG__REPLAYGAIN_TAG_TITLE_GAIN; /* = "REPLAYGAIN_TRACK_GAIN" */ |
| 41 | extern const FLAC__byte * const GRABBAG__REPLAYGAIN_TAG_TITLE_PEAK; /* = "REPLAYGAIN_TRACK_PEAK" */ |
| 42 | extern const FLAC__byte * const GRABBAG__REPLAYGAIN_TAG_ALBUM_GAIN; /* = "REPLAYGAIN_ALBUM_GAIN" */ |
| 43 | extern const FLAC__byte * const GRABBAG__REPLAYGAIN_TAG_ALBUM_PEAK; /* = "REPLAYGAIN_ALBUM_PEAK" */ |
| 44 | |
| 45 | FLAC__bool grabbag__replaygain_is_valid_sample_frequency(unsigned sample_frequency); |
| 46 | |
| 47 | FLAC__bool grabbag__replaygain_init(unsigned sample_frequency); |
| 48 | |
| 49 | /* 'bps' must be valid for FLAC, i.e. >=4 and <= 32 */ |
| 50 | FLAC__bool grabbag__replaygain_analyze(const FLAC__int32 * const input[], FLAC__bool is_stereo, unsigned bps, unsigned samples); |
| 51 | |
| 52 | void grabbag__replaygain_get_album(float *gain, float *peak); |
| 53 | void grabbag__replaygain_get_title(float *gain, float *peak); |
| 54 | |
| 55 | /* These three functions return an error string on error, or NULL if successful */ |
| 56 | const char *grabbag__replaygain_analyze_file(const char *filename, float *title_gain, float *title_peak); |
| 57 | const char *grabbag__replaygain_store_to_vorbiscomment(FLAC__StreamMetadata *block, float album_gain, float album_peak, float title_gain, float title_peak); |
| 58 | const char *grabbag__replaygain_store_to_vorbiscomment_reference(FLAC__StreamMetadata *block); |
| 59 | const char *grabbag__replaygain_store_to_vorbiscomment_album(FLAC__StreamMetadata *block, float album_gain, float album_peak); |
| 60 | const char *grabbag__replaygain_store_to_vorbiscomment_title(FLAC__StreamMetadata *block, float title_gain, float title_peak); |
| 61 | 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); |
| 62 | const char *grabbag__replaygain_store_to_file_reference(const char *filename, FLAC__bool preserve_modtime); |
| 63 | const char *grabbag__replaygain_store_to_file_album(const char *filename, float album_gain, float album_peak, FLAC__bool preserve_modtime); |
| 64 | const char *grabbag__replaygain_store_to_file_title(const char *filename, float title_gain, float title_peak, FLAC__bool preserve_modtime); |
| 65 | |
| 66 | FLAC__bool grabbag__replaygain_load_from_vorbiscomment(const FLAC__StreamMetadata *block, FLAC__bool album_mode, FLAC__bool strict, double *reference, double *gain, double *peak); |
| 67 | double grabbag__replaygain_compute_scale_factor(double peak, double gain, double preamp, FLAC__bool prevent_clipping); |
| 68 | |
| 69 | #ifdef __cplusplus |
| 70 | } |
| 71 | #endif |
| 72 | |
| 73 | #endif |