mirror of https://github.com/xiph/flac
initial import
This commit is contained in:
Josh Coalson
parent
e7ff8fb714
commit
1f22816171
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@ -0,0 +1,74 @@
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/*
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* ReplayGainAnalysis - analyzes input samples and give the recommended dB change
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* Copyright (C) 2001 David Robinson and Glen Sawyer
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* concept and filter values by David Robinson (David@Robinson.org)
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* -- blame him if you think the idea is flawed
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* coding by Glen Sawyer (glensawyer@hotmail.com) 442 N 700 E, Provo, UT 84606 USA
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* -- blame him if you think this runs too slowly, or the coding is otherwise flawed
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* minor cosmetic tweaks to integrate with FLAC by Josh Coalson
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*
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* For an explanation of the concepts and the basic algorithms involved, go to:
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* http://www.replaygain.org/
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*/
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#ifndef GAIN_ANALYSIS_H
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#define GAIN_ANALYSIS_H
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#if defined(FLAC__NO_DLL) || defined(unix) || defined(__CYGWIN__) || defined(__CYGWIN32__)
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#define GAIN_ANALYSIS_API
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#else
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#ifdef GAIN_ANALYSIS_API_EXPORTS
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#define GAIN_ANALYSIS_API _declspec(dllexport)
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#else
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#define GAIN_ANALYSIS_API _declspec(dllimport)
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#define __LIBNAME__ "gain_analysis.lib"
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#pragma comment(lib, __LIBNAME__)
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#undef __LIBNAME__
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#endif
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#endif
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#include <stddef.h>
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#define GAIN_NOT_ENOUGH_SAMPLES -24601
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#define GAIN_ANALYSIS_ERROR 0
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#define GAIN_ANALYSIS_OK 1
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#define INIT_GAIN_ANALYSIS_ERROR 0
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#define INIT_GAIN_ANALYSIS_OK 1
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef float Float_t; /* Type used for filtering */
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GAIN_ANALYSIS_API int InitGainAnalysis ( long samplefreq );
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GAIN_ANALYSIS_API int AnalyzeSamples ( const Float_t* left_samples, const Float_t* right_samples, size_t num_samples, int num_channels );
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GAIN_ANALYSIS_API int ResetSampleFrequency ( long samplefreq );
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GAIN_ANALYSIS_API Float_t GetTitleGain ( void );
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GAIN_ANALYSIS_API Float_t GetAlbumGain ( void );
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#ifdef __cplusplus
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}
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#endif
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#endif /* GAIN_ANALYSIS_H */
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/* replaygain - Convenience lib for calculating/storing ReplayGain in FLAC
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* Copyright (C) 2002 Josh Coalson
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/*
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* This wraps the gain_analysis lib, which is LGPL. This wrapper
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* allows analysis of different input resolutions by automatically
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* scaling the input signal
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*/
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#ifndef FLAC__SHARE__REPLAYGAIN_H
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#define FLAC__SHARE__REPLAYGAIN_H
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#if defined(FLAC__NO_DLL) || defined(unix) || defined(__CYGWIN__) || defined(__CYGWIN32__)
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#define REPLAYGAIN_API
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#else
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#ifdef REPLAYGAIN_API_EXPORTS
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#define REPLAYGAIN_API _declspec(dllexport)
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#else
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#define REPLAYGAIN_API _declspec(dllimport)
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#define __LIBNAME__ "replaygain.lib"
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#pragma comment(lib, __LIBNAME__)
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#undef __LIBNAME__
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#endif
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#endif
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#include "FLAC/ordinals.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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REPLAYGAIN_API FLAC__bool FLAC__replaygain_init(unsigned sample_frequency);
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/* 'bps' must be valid for FLAC, i.e. >=4 and <= 32 */
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REPLAYGAIN_API FLAC__bool FLAC__replaygain_analyze(const FLAC__int32 * const input[], FLAC__bool is_stereo, unsigned bps, unsigned samples);
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REPLAYGAIN_API float FLAC__replaygain_get_album_gain();
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REPLAYGAIN_API float FLAC__replaygain_get_title_gain();
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#ifdef __cplusplus
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}
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#endif
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#endif
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@ -0,0 +1,20 @@
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## Process this file with automake to produce Makefile.in
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AUTOMAKE_OPTIONS = foreign
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INCLUDES = -I$(top_srcdir)/include
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noinst_LIBRARIES = libreplaygain.a
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libreplaygain_a_SOURCES = replaygain.c
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EXTRA_DIST = \
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Makefile.lite \
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Makefile.vc \
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replaygain.dsp
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debug:
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$(MAKE) all CFLAGS="@DEBUG@"
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profile:
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$(MAKE) all CFLAGS="@PROFILE@"
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@ -0,0 +1,15 @@
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#
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# GNU makefile
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#
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topdir = ../../..
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LIB_NAME = libreplaygain
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INCLUDES = -I$(topdir)/include
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OBJS = \
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replaygain.o
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include $(topdir)/build/lib.mk
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# DO NOT DELETE THIS LINE -- make depend depends on it.
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!include <win32.mak>
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!IFDEF DEBUG
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.c.obj:
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$(cc) /D "_LIB" -DFLAC__NO_DLL /GX $(cdebug) $(cflags) /I "..\..\..\include" -DSTRICT -YX /Od /D "_DEBUG" $<
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!else
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.c.obj:
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$(cc) /D "_LIB" -DFLAC__NO_DLL /O2 $(crelease) $(cflags) /I "..\..\..\include" -DSTRICT -YX -DNODEBUG $<
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!endif
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C_FILES= \
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replaygain.c \
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OBJS= $(C_FILES:.c=.obj)
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all: replaygain.lib
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replaygain.lib: $(OBJS)
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link.exe -lib /nodefaultlib -out:../../../obj/lib/$*.lib $(OBJS)
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clean:
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-del *.obj *.pch
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-del ..\..\..\obj\lib\replaygain.lib ..\..\..\obj\lib\replaygain.pdb
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/* replaygain - Convenience lib for calculating/storing ReplayGain in FLAC
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* Copyright (C) 2002 Josh Coalson
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "share/replaygain.h"
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#include "share/gain_analysis.h"
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#include "FLAC/assert.h"
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#include "FLAC/format.h"
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#ifdef local_min
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#undef local_min
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#endif
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#define local_min(a,b) ((a)<(b)?(a):(b))
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REPLAYGAIN_API FLAC__bool FLAC__replaygain_init(unsigned sample_frequency)
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{
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return InitGainAnalysis((long)sample_frequency) == INIT_GAIN_ANALYSIS_OK;
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}
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REPLAYGAIN_API FLAC__bool FLAC__replaygain_analyze(const FLAC__int32 * const input[], FLAC__bool is_stereo, unsigned bps, unsigned samples)
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{
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static Float_t lbuffer[4096], rbuffer[4096];
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static const unsigned nbuffer = sizeof(lbuffer) / sizeof(lbuffer[0]);
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unsigned i;
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FLAC__ASSERT(bps >= 4 && bps <= 32);
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FLAC__ASSERT(FLAC__MIN_BITS_PER_SAMPLE == 4);
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FLAC__ASSERT(FLAC__MAX_BITS_PER_SAMPLE == 32);
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if(bps == 16) {
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if(is_stereo) {
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while(samples > 0) {
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const unsigned n = local_min(samples, nbuffer);
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for(i = 0; i < n; i++) {
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lbuffer[i] = (Float_t)input[0][i];
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rbuffer[i] = (Float_t)input[1][i];
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}
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samples -= n;
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if(AnalyzeSamples(lbuffer, rbuffer, n, 2) != GAIN_ANALYSIS_OK)
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return false;
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}
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}
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else {
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while(samples > 0) {
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const unsigned n = local_min(samples, nbuffer);
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for(i = 0; i < n; i++)
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lbuffer[i] = (Float_t)input[0][i];
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samples -= n;
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if(AnalyzeSamples(lbuffer, 0, n, 1) != GAIN_ANALYSIS_OK)
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return false;
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}
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}
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}
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else {
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const double scale = (
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(bps > 16)?
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(double)1. / (double)(1u << (bps - 16)) :
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(double)(1u << (16 - bps))
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);
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if(is_stereo) {
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while(samples > 0) {
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const unsigned n = local_min(samples, nbuffer);
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for(i = 0; i < n; i++) {
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lbuffer[i] = (Float_t)(scale * (double)input[0][i]);
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rbuffer[i] = (Float_t)(scale * (double)input[1][i]);
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}
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samples -= n;
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if(AnalyzeSamples(lbuffer, rbuffer, n, 2) != GAIN_ANALYSIS_OK)
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return false;
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}
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}
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else {
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while(samples > 0) {
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const unsigned n = local_min(samples, nbuffer);
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for(i = 0; i < n; i++)
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lbuffer[i] = (Float_t)(scale * (double)input[0][i]);
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samples -= n;
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if(AnalyzeSamples(lbuffer, 0, n, 1) != GAIN_ANALYSIS_OK)
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return false;
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}
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}
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}
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return true;
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}
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REPLAYGAIN_API float FLAC__replaygain_get_album_gain()
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{
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return GetAlbumGain();
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}
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REPLAYGAIN_API float FLAC__replaygain_get_title_gain()
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{
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return GetTitleGain();
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}
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@ -0,0 +1,115 @@
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# Microsoft Developer Studio Project File - Name="replaygain" - Package Owner=<4>
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# Microsoft Developer Studio Generated Build File, Format Version 6.00
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# ** DO NOT EDIT **
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# TARGTYPE "Win32 (x86) Dynamic-Link Library" 0x0102
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CFG=replaygain - Win32 Debug
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!MESSAGE This is not a valid makefile. To build this project using NMAKE,
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!MESSAGE use the Export Makefile command and run
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||||
!MESSAGE
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!MESSAGE NMAKE /f "replaygain.mak".
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!MESSAGE
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!MESSAGE You can specify a configuration when running NMAKE
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!MESSAGE by defining the macro CFG on the command line. For example:
|
||||
!MESSAGE
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||||
!MESSAGE NMAKE /f "replaygain.mak" CFG="replaygain - Win32 Debug"
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!MESSAGE
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!MESSAGE Possible choices for configuration are:
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!MESSAGE
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!MESSAGE "replaygain - Win32 Release" (based on "Win32 (x86) Dynamic-Link Library")
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!MESSAGE "replaygain - Win32 Debug" (based on "Win32 (x86) Dynamic-Link Library")
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!MESSAGE
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# Begin Project
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||||
# PROP AllowPerConfigDependencies 0
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||||
# PROP Scc_ProjName "replaygain"
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# PROP Scc_LocalPath "..\..\.."
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CPP=cl.exe
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MTL=midl.exe
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||||
RSC=rc.exe
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||||
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!IF "$(CFG)" == "replaygain - Win32 Release"
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# PROP BASE Use_MFC 0
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||||
# PROP BASE Use_Debug_Libraries 0
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||||
# PROP BASE Output_Dir "Release"
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||||
# PROP BASE Intermediate_Dir "Release"
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||||
# PROP BASE Target_Dir ""
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||||
# PROP Use_MFC 0
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||||
# PROP Use_Debug_Libraries 0
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||||
# PROP Output_Dir "..\..\..\obj\lib"
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||||
# PROP Intermediate_Dir "Release"
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||||
# PROP Ignore_Export_Lib 0
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||||
# PROP Target_Dir ""
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||||
# ADD BASE CPP /nologo /MT /W3 /GX /O2 /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /YX /FD /c
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||||
# ADD CPP /nologo /MD /W3 /GR /GX /O2 /I ".\include" /I "..\..\..\include" /D "NDEBUG" /D "REPLAYGAIN_API_EXPORTS" /D "_WINDOWS" /D "_WINDLL" /D "WIN32" /D "_USRDLL" /FR /FD /c
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||||
# ADD BASE MTL /nologo /D "NDEBUG" /mktyplib203 /o "NUL" /win32
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||||
# ADD MTL /nologo /D "NDEBUG" /mktyplib203 /o "NUL" /win32
|
||||
# ADD BASE RSC /l 0x409 /d "NDEBUG"
|
||||
# ADD RSC /l 0x409 /d "NDEBUG" /d "_USRDLL"
|
||||
BSC32=bscmake.exe
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||||
# ADD BASE BSC32 /nologo
|
||||
# ADD BSC32 /nologo
|
||||
LINK32=link.exe
|
||||
# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:windows /dll /machine:I386
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||||
# ADD LINK32 /nologo /subsystem:windows /dll /machine:I386 /out:"..\..\..\obj\bin/replaygain.dll"
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||||
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||||
!ELSEIF "$(CFG)" == "replaygain - Win32 Debug"
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||||
|
||||
# PROP BASE Use_MFC 0
|
||||
# PROP BASE Use_Debug_Libraries 1
|
||||
# PROP BASE Output_Dir "Debug"
|
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# PROP BASE Intermediate_Dir "Debug"
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# PROP BASE Target_Dir ""
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# PROP Use_MFC 0
|
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# PROP Use_Debug_Libraries 1
|
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# PROP Output_Dir "..\..\..\obj\lib"
|
||||
# PROP Intermediate_Dir "Debug"
|
||||
# PROP Ignore_Export_Lib 0
|
||||
# PROP Target_Dir ""
|
||||
# ADD BASE CPP /nologo /MTd /W3 /Gm /GX /Zi /Od /D "WIN32" /D "_DEBUG" /D "_WINDOWS" /YX /FD /c
|
||||
# ADD CPP /nologo /MDd /W3 /Gm /GR /GX /ZI /Od /I ".\include" /I "..\..\..\include" /D "_DEBUG" /D "_CHATTER" /D "REPLAYGAIN_API_EXPORTS" /D "_WINDOWS" /D "_WINDLL" /D "WIN32" /D "_USRDLL" /FR /FD /c
|
||||
# ADD BASE MTL /nologo /D "_DEBUG" /mktyplib203 /o "NUL" /win32
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# ADD MTL /nologo /D "_DEBUG" /mktyplib203 /o "NUL" /win32
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# ADD BASE RSC /l 0x409 /d "_DEBUG"
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# ADD RSC /l 0x409 /d "_DEBUG" /d "_USRDLL"
|
||||
BSC32=bscmake.exe
|
||||
# ADD BASE BSC32 /nologo
|
||||
# ADD BSC32 /nologo
|
||||
LINK32=link.exe
|
||||
# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:windows /dll /debug /machine:I386 /pdbtype:sept
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||||
# ADD LINK32 /nologo /subsystem:windows /dll /debug /machine:I386 /out:"..\..\..\obj\bin/replaygain.dll" /pdbtype:sept
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||||
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||||
!ENDIF
|
||||
|
||||
# Begin Target
|
||||
|
||||
# Name "replaygain - Win32 Release"
|
||||
# Name "replaygain - Win32 Debug"
|
||||
# Begin Group "Source Files"
|
||||
|
||||
# PROP Default_Filter "cpp"
|
||||
# Begin Source File
|
||||
|
||||
SOURCE=.\replaygain.c
|
||||
# End Source File
|
||||
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|
||||
# Begin Group "Private Header Files"
|
||||
|
||||
# PROP Default_Filter ""
|
||||
# End Group
|
||||
# Begin Group "Protected Header Files"
|
||||
|
||||
# PROP Default_Filter ""
|
||||
# End Group
|
||||
# Begin Group "Public Header Files"
|
||||
|
||||
# PROP Default_Filter ""
|
||||
# Begin Source File
|
||||
|
||||
SOURCE=..\..\..\include\share\replaygain.h
|
||||
# End Source File
|
||||
# End Group
|
||||
# End Target
|
||||
# End Project
|
||||
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