replaygain.h - vx32 - Local 9vx git repository for patches.
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       replaygain.h (3110B)
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            1 /* grabbag - Convenience lib for various routines common to several tools
            2  * Copyright (C) 2002,2003,2004,2005  Josh Coalson
            3  *
            4  * This program is free software; you can redistribute it and/or
            5  * modify it under the terms of the GNU General Public License
            6  * as published by the Free Software Foundation; either version 2
            7  * of the License, or (at your option) any later version.
            8  *
            9  * This program is distributed in the hope that it will be useful,
           10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
           11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
           12  * GNU General Public License for more details.
           13  *
           14  * You should have received a copy of the GNU General Public License
           15  * along with this program; if not, write to the Free Software
           16  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
           17  */
           18 
           19 /*
           20  * This wraps the replaygain_analysis lib, which is LGPL.  This wrapper
           21  * allows analysis of different input resolutions by automatically
           22  * scaling the input signal
           23  */
           24 
           25 /* This .h cannot be included by itself; #include "share/grabbag.h" instead. */
           26 
           27 #ifndef GRABBAG__REPLAYGAIN_H
           28 #define GRABBAG__REPLAYGAIN_H
           29 
           30 #include "FLAC/metadata.h"
           31 
           32 #ifdef __cplusplus
           33 extern "C" {
           34 #endif
           35 
           36 extern const unsigned GRABBAG__REPLAYGAIN_MAX_TAG_SPACE_REQUIRED;
           37 
           38 FLAC__bool grabbag__replaygain_is_valid_sample_frequency(unsigned sample_frequency);
           39 
           40 FLAC__bool grabbag__replaygain_init(unsigned sample_frequency);
           41 
           42 /* 'bps' must be valid for FLAC, i.e. >=4 and <= 32 */
           43 FLAC__bool grabbag__replaygain_analyze(const FLAC__int32 * const input[], FLAC__bool is_stereo, unsigned bps, unsigned samples);
           44 
           45 void grabbag__replaygain_get_album(float *gain, float *peak);
           46 void grabbag__replaygain_get_title(float *gain, float *peak);
           47 
           48 /* These three functions return an error string on error, or NULL if successful */
           49 const char *grabbag__replaygain_analyze_file(const char *filename, float *title_gain, float *title_peak);
           50 const char *grabbag__replaygain_store_to_vorbiscomment(FLAC__StreamMetadata *block, float album_gain, float album_peak, float title_gain, float title_peak);
           51 const char *grabbag__replaygain_store_to_vorbiscomment_album(FLAC__StreamMetadata *block, float album_gain, float album_peak);
           52 const char *grabbag__replaygain_store_to_vorbiscomment_title(FLAC__StreamMetadata *block, float title_gain, float title_peak);
           53 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);
           54 const char *grabbag__replaygain_store_to_file_album(const char *filename, float album_gain, float album_peak, FLAC__bool preserve_modtime);
           55 const char *grabbag__replaygain_store_to_file_title(const char *filename, float title_gain, float title_peak, FLAC__bool preserve_modtime);
           56 
           57 FLAC__bool grabbag__replaygain_load_from_vorbiscomment(const FLAC__StreamMetadata *block, FLAC__bool album_mode, double *gain, double *peak);
           58 double grabbag__replaygain_compute_scale_factor(double peak, double gain, double preamp, FLAC__bool prevent_clipping);
           59 
           60 #ifdef __cplusplus
           61 }
           62 #endif
           63 
           64 #endif