diff options
Diffstat (limited to 'deps/flac-1.3.2/src/share/replaygain_analysis')
5 files changed, 0 insertions, 933 deletions
diff --git a/deps/flac-1.3.2/src/share/replaygain_analysis/Makefile.lite b/deps/flac-1.3.2/src/share/replaygain_analysis/Makefile.lite deleted file mode 100644 index 4fa2cc9..0000000 --- a/deps/flac-1.3.2/src/share/replaygain_analysis/Makefile.lite +++ /dev/null @@ -1,15 +0,0 @@ -# -# GNU makefile -# - -topdir = ../../.. - -LIB_NAME = libreplaygain_analysis -INCLUDES = -I$(topdir)/include - -SRCS_C = \ - replaygain_analysis.c - -include $(topdir)/build/lib.mk - -# DO NOT DELETE THIS LINE -- make depend depends on it. diff --git a/deps/flac-1.3.2/src/share/replaygain_analysis/replaygain_analysis.c b/deps/flac-1.3.2/src/share/replaygain_analysis/replaygain_analysis.c deleted file mode 100644 index 20a5b28..0000000 --- a/deps/flac-1.3.2/src/share/replaygain_analysis/replaygain_analysis.c +++ /dev/null @@ -1,572 +0,0 @@ -/* - * ReplayGainAnalysis - analyzes input samples and give the recommended dB change - * Copyright (C) 2001 David Robinson and Glen Sawyer - * - * 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 - * - * concept and filter values by David Robinson (David@Robinson.org) - * -- blame him if you think the idea is flawed - * original coding by Glen Sawyer (glensawyer@hotmail.com) - * -- blame him if you think this runs too slowly, or the coding is otherwise flawed - * - * lots of code improvements by Frank Klemm ( http://www.uni-jena.de/~pfk/mpp/ ) - * -- credit him for all the _good_ programming ;) - * - * minor cosmetic tweaks to integrate with FLAC by Josh Coalson - * - * - * For an explanation of the concepts and the basic algorithms involved, go to: - * http://www.replaygain.org/ - */ - -/* - * Here's the deal. Call - * - * InitGainAnalysis ( long samplefreq ); - * - * to initialize everything. Call - * - * AnalyzeSamples ( const flac_float_t* left_samples, - * const flac_float_t* right_samples, - * size_t num_samples, - * int num_channels ); - * - * as many times as you want, with as many or as few samples as you want. - * If mono, pass the sample buffer in through left_samples, leave - * right_samples NULL, and make sure num_channels = 1. - * - * GetTitleGain() - * - * will return the recommended dB level change for all samples analyzed - * SINCE THE LAST TIME you called GetTitleGain() OR InitGainAnalysis(). - * - * GetAlbumGain() - * - * will return the recommended dB level change for all samples analyzed - * since InitGainAnalysis() was called and finalized with GetTitleGain(). - * - * Pseudo-code to process an album: - * - * flac_float_t l_samples [4096]; - * flac_float_t r_samples [4096]; - * size_t num_samples; - * unsigned int num_songs; - * unsigned int i; - * - * InitGainAnalysis ( 44100 ); - * for ( i = 1; i <= num_songs; i++ ) { - * while ( ( num_samples = getSongSamples ( song[i], left_samples, right_samples ) ) > 0 ) - * AnalyzeSamples ( left_samples, right_samples, num_samples, 2 ); - * fprintf ("Recommended dB change for song %2d: %+6.2f dB\n", i, GetTitleGain() ); - * } - * fprintf ("Recommended dB change for whole album: %+6.2f dB\n", GetAlbumGain() ); - */ - -/* - * So here's the main source of potential code confusion: - * - * The filters applied to the incoming samples are IIR filters, - * meaning they rely on up to <filter order> number of previous samples - * AND up to <filter order> number of previous filtered samples. - * - * I set up the AnalyzeSamples routine to minimize memory usage and interface - * complexity. The speed isn't compromised too much (I don't think), but the - * internal complexity is higher than it should be for such a relatively - * simple routine. - * - * Optimization/clarity suggestions are welcome. - */ - -#ifdef HAVE_CONFIG_H -# include <config.h> -#endif - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <math.h> -#include "share/alloc.h" -#include "share/compat.h" -#include "share/replaygain_analysis.h" - -flac_float_t ReplayGainReferenceLoudness = 89.0; /* in dB SPL */ - -#define YULE_ORDER 10 -#define BUTTER_ORDER 2 -#define RMS_PERCENTILE 0.95 /* percentile which is louder than the proposed level */ -#define RMS_WINDOW_TIME 50 /* Time slice size [ms] */ -#define STEPS_per_dB 100. /* Table entries per dB */ -#define MAX_dB 120. /* Table entries for 0...MAX_dB (normal max. values are 70...80 dB) */ - -#define MAX_ORDER (BUTTER_ORDER > YULE_ORDER ? BUTTER_ORDER : YULE_ORDER) -#define PINK_REF 64.82 /* 298640883795 */ /* calibration value */ - -static flac_float_t linprebuf [MAX_ORDER * 2]; -static flac_float_t* linpre; /* left input samples, with pre-buffer */ -static flac_float_t* lstepbuf; -static flac_float_t* lstep; /* left "first step" (i.e. post first filter) samples */ -static flac_float_t* loutbuf; -static flac_float_t* lout; /* left "out" (i.e. post second filter) samples */ -static flac_float_t rinprebuf [MAX_ORDER * 2]; -static flac_float_t* rinpre; /* right input samples ... */ -static flac_float_t* rstepbuf; -static flac_float_t* rstep; -static flac_float_t* routbuf; -static flac_float_t* rout; -static unsigned int sampleWindow; /* number of samples required to reach number of milliseconds required for RMS window */ -static unsigned long totsamp; -static double lsum; -static double rsum; -#if 0 -static uint32_t A [(size_t)(STEPS_per_dB * MAX_dB)]; -static uint32_t B [(size_t)(STEPS_per_dB * MAX_dB)]; -#else -/* [JEC] Solaris Forte compiler doesn't like float calc in array indices */ -static uint32_t A [120 * 100]; -static uint32_t B [120 * 100]; -#endif - -#ifdef _MSC_VER -#pragma warning ( disable : 4305 ) -#endif - -struct ReplayGainFilter { - long rate; - unsigned downsample; - flac_float_t BYule[YULE_ORDER+1]; - flac_float_t AYule[YULE_ORDER+1]; - flac_float_t BButter[BUTTER_ORDER+1]; - flac_float_t AButter[BUTTER_ORDER+1]; -}; - -static struct ReplayGainFilter *replaygainfilter; - -static const struct ReplayGainFilter ReplayGainFilters[] = { - - { - 48000, 0, /* ORIGINAL */ - { 0.03857599435200, -0.02160367184185, -0.00123395316851, -0.00009291677959, -0.01655260341619, 0.02161526843274, -0.02074045215285, 0.00594298065125, 0.00306428023191, 0.00012025322027, 0.00288463683916 }, - { 1.00000000000000, -3.84664617118067, 7.81501653005538, -11.34170355132042, 13.05504219327545, -12.28759895145294, 9.48293806319790, -5.87257861775999, 2.75465861874613, -0.86984376593551, 0.13919314567432 }, - { 0.98621192462708, -1.97242384925416, 0.98621192462708 }, - { 1.00000000000000, -1.97223372919527, 0.97261396931306 }, - }, - - { - 44100, 0, /* ORIGINAL */ - { 0.05418656406430, -0.02911007808948, -0.00848709379851, -0.00851165645469, -0.00834990904936, 0.02245293253339, -0.02596338512915, 0.01624864962975, -0.00240879051584, 0.00674613682247, -0.00187763777362 }, - { 1.00000000000000, -3.47845948550071, 6.36317777566148, -8.54751527471874, 9.47693607801280, -8.81498681370155, 6.85401540936998, -4.39470996079559, 2.19611684890774, -0.75104302451432, 0.13149317958808 }, - { 0.98500175787242, -1.97000351574484, 0.98500175787242 }, - { 1.00000000000000, -1.96977855582618, 0.97022847566350 }, - }, - - { - 37800, 0, - { 0.10296717174470, -0.04877975583256, -0.02878009075237, -0.03519509188311, 0.02888717172493, -0.00609872684844, 0.00209851217112, 0.00911704668543, 0.01154404718589, -0.00630293688700, 0.00107527155228 }, - { 1.00000000000000, -2.64848054923531, 3.58406058405771, -3.83794914179161, 3.90142345804575, -3.50179818637243, 2.67085284083076, -1.82581142372418, 1.09530368139801, -0.47689017820395, 0.11171431535905 }, - { 0.98252400815195, -1.96504801630391, 0.98252400815195 }, - { 1.00000000000000, -1.96474258269041, 0.96535344991740 }, - }, - - { - 36000, 0, - { 0.11572297028613, -0.04120916051252, -0.04977731768022, -0.01047308680426, 0.00750863219157, 0.00055507694408, 0.00140344192886, 0.01286095246036, 0.00998223033885, -0.00725013810661, 0.00326503346879 }, - { 1.00000000000000, -2.43606802820871, 3.01907406973844, -2.90372016038192, 2.67947188094303, -2.17606479220391, 1.44912956803015, -0.87785765549050, 0.53592202672557, -0.26469344817509, 0.07495878059717 }, - { 0.98165826840326, -1.96331653680652, 0.98165826840326 }, - { 1.00000000000000, -1.96298008938934, 0.96365298422371 }, - }, - - { - 32000, 0, /* ORIGINAL */ - { 0.15457299681924, -0.09331049056315, -0.06247880153653, 0.02163541888798, -0.05588393329856, 0.04781476674921, 0.00222312597743, 0.03174092540049, -0.01390589421898, 0.00651420667831, -0.00881362733839 }, - { 1.00000000000000, -2.37898834973084, 2.84868151156327, -2.64577170229825, 2.23697657451713, -1.67148153367602, 1.00595954808547, -0.45953458054983, 0.16378164858596, -0.05032077717131, 0.02347897407020 }, - { 0.97938932735214, -1.95877865470428, 0.97938932735214 }, - { 1.00000000000000, -1.95835380975398, 0.95920349965459 }, - }, - - { - 28000, 0, - { 0.23882392323383, -0.22007791534089, -0.06014581950332, 0.05004458058021, -0.03293111254977, 0.02348678189717, 0.04290549799671, -0.00938141862174, 0.00015095146303, -0.00712601540885, -0.00626520210162 }, - { 1.00000000000000, -2.06894080899139, 1.76944699577212, -0.81404732584187, 0.25418286850232, -0.30340791669762, 0.35616884070937, -0.14967310591258, -0.07024154183279, 0.11078404345174, -0.03551838002425 }, - { 0.97647981663949, -1.95295963327897, 0.97647981663949 }, - { 1.00000000000000, -1.95240635772520, 0.95351290883275 }, - - }, - - { - 24000, 0, /* ORIGINAL */ - { 0.30296907319327, -0.22613988682123, -0.08587323730772, 0.03282930172664, -0.00915702933434, -0.02364141202522, -0.00584456039913, 0.06276101321749, -0.00000828086748, 0.00205861885564, -0.02950134983287 }, - { 1.00000000000000, -1.61273165137247, 1.07977492259970, -0.25656257754070, -0.16276719120440, -0.22638893773906, 0.39120800788284, -0.22138138954925, 0.04500235387352, 0.02005851806501, 0.00302439095741 }, - { 0.97531843204928, -1.95063686409857, 0.97531843204928 }, - { 1.00000000000000, -1.95002759149878, 0.95124613669835 }, - }, - - { - 22050, 0, /* ORIGINAL */ - { 0.33642304856132, -0.25572241425570, -0.11828570177555, 0.11921148675203, -0.07834489609479, -0.00469977914380, -0.00589500224440, 0.05724228140351, 0.00832043980773, -0.01635381384540, -0.01760176568150 }, - { 1.00000000000000, -1.49858979367799, 0.87350271418188, 0.12205022308084, -0.80774944671438, 0.47854794562326, -0.12453458140019, -0.04067510197014, 0.08333755284107, -0.04237348025746, 0.02977207319925 }, - { 0.97316523498161, -1.94633046996323, 0.97316523498161 }, - { 1.00000000000000, -1.94561023566527, 0.94705070426118 }, - }, - - { - 18900, 0, - { 0.38412657295385, -0.44533729608120, 0.20426638066221, -0.28031676047946, 0.31484202614802, -0.26078311203207, 0.12925201224848, -0.01141164696062, 0.03036522115769, -0.03776339305406, 0.00692036603586 }, - { 1.00000000000000, -1.74403915585708, 1.96686095832499, -2.10081452941881, 1.90753918182846, -1.83814263754422, 1.36971352214969, -0.77883609116398, 0.39266422457649, -0.12529383592986, 0.05424760697665 }, - { 0.96535326815829, -1.93070653631658, 0.96535326815829 }, - { 1.00000000000000, -1.92950577983524, 0.93190729279793 }, - }, - - { - 16000, 0, /* ORIGINAL */ - { 0.44915256608450, -0.14351757464547, -0.22784394429749, -0.01419140100551, 0.04078262797139, -0.12398163381748, 0.04097565135648, 0.10478503600251, -0.01863887810927, -0.03193428438915, 0.00541907748707 }, - { 1.00000000000000, -0.62820619233671, 0.29661783706366, -0.37256372942400, 0.00213767857124, -0.42029820170918, 0.22199650564824, 0.00613424350682, 0.06747620744683, 0.05784820375801, 0.03222754072173 }, - { 0.96454515552826, -1.92909031105652, 0.96454515552826 }, - { 1.00000000000000, -1.92783286977036, 0.93034775234268 }, - }, - - { - 12000, 0, /* ORIGINAL */ - { 0.56619470757641, -0.75464456939302, 0.16242137742230, 0.16744243493672, -0.18901604199609, 0.30931782841830, -0.27562961986224, 0.00647310677246, 0.08647503780351, -0.03788984554840, -0.00588215443421 }, - { 1.00000000000000, -1.04800335126349, 0.29156311971249, -0.26806001042947, 0.00819999645858, 0.45054734505008, -0.33032403314006, 0.06739368333110, -0.04784254229033, 0.01639907836189, 0.01807364323573 }, - { 0.96009142950541, -1.92018285901082, 0.96009142950541 }, - { 1.00000000000000, -1.91858953033784, 0.92177618768381 }, - }, - - { - 11025, 0, /* ORIGINAL */ - { 0.58100494960553, -0.53174909058578, -0.14289799034253, 0.17520704835522, 0.02377945217615, 0.15558449135573, -0.25344790059353, 0.01628462406333, 0.06920467763959, -0.03721611395801, -0.00749618797172 }, - { 1.00000000000000, -0.51035327095184, -0.31863563325245, -0.20256413484477, 0.14728154134330, 0.38952639978999, -0.23313271880868, -0.05246019024463, -0.02505961724053, 0.02442357316099, 0.01818801111503 }, - { 0.95856916599601, -1.91713833199203, 0.95856916599601 }, - { 1.00000000000000, -1.91542108074780, 0.91885558323625 }, - }, - - { - 8000, 0, /* ORIGINAL */ - { 0.53648789255105, -0.42163034350696, -0.00275953611929, 0.04267842219415, -0.10214864179676, 0.14590772289388, -0.02459864859345, -0.11202315195388, -0.04060034127000, 0.04788665548180, -0.02217936801134 }, - { 1.00000000000000, -0.25049871956020, -0.43193942311114, -0.03424681017675, -0.04678328784242, 0.26408300200955, 0.15113130533216, -0.17556493366449, -0.18823009262115, 0.05477720428674, 0.04704409688120 }, - { 0.94597685600279, -1.89195371200558, 0.94597685600279 }, - { 1.00000000000000, -1.88903307939452, 0.89487434461664 }, - }, - -}; - -#ifdef _MSC_VER -#pragma warning ( default : 4305 ) -#endif - -/* When calling this procedure, make sure that ip[-order] and op[-order] point to real data! */ - -static void -filter ( const flac_float_t* input, flac_float_t* output, size_t nSamples, const flac_float_t* a, const flac_float_t* b, size_t order, unsigned downsample ) -{ - double y; - size_t i; - size_t k; - - const flac_float_t* input_head = input; - const flac_float_t* input_tail; - - flac_float_t* output_head = output; - flac_float_t* output_tail; - - for ( i = 0; i < nSamples; i++, input_head += downsample, ++output_head ) { - - input_tail = input_head; - output_tail = output_head; - - y = *input_head * b[0]; - - for ( k = 1; k <= order; k++ ) { - input_tail -= downsample; - --output_tail; - y += *input_tail * b[k] - *output_tail * a[k]; - } - - output[i] = (flac_float_t)y; - } -} - -/* returns a INIT_GAIN_ANALYSIS_OK if successful, INIT_GAIN_ANALYSIS_ERROR if not */ - -static struct ReplayGainFilter* -CreateGainFilter ( long samplefreq ) -{ - unsigned i; - long maxrate = 0; - unsigned downsample = 1; - struct ReplayGainFilter* gainfilter = malloc(sizeof(*gainfilter)); - - if ( !gainfilter ) - return 0; - - while (1) { - for ( i = 0; i < sizeof(ReplayGainFilters)/sizeof(ReplayGainFilters[0]); ++i ) { - if (maxrate < ReplayGainFilters[i].rate) - maxrate = ReplayGainFilters[i].rate; - - if ( ReplayGainFilters[i].rate == samplefreq ) { - *gainfilter = ReplayGainFilters[i]; - gainfilter->downsample = downsample; - return gainfilter; - } - } - - if (samplefreq < maxrate) - break; - - while (samplefreq > maxrate) { - downsample *= 2; - samplefreq /= 2; - } - } - - free(gainfilter); - - return 0; -} - -static void* -ReallocateWindowBuffer(unsigned window_size, flac_float_t **window_buffer) -{ - *window_buffer = safe_realloc_(*window_buffer, sizeof(**window_buffer) * (window_size + MAX_ORDER)); - return *window_buffer; -} - -static int -ResetSampleFrequency ( long samplefreq ) { - int i; - - free(replaygainfilter); - - replaygainfilter = CreateGainFilter( samplefreq ); - - if ( ! replaygainfilter) - return INIT_GAIN_ANALYSIS_ERROR; - - sampleWindow = - (replaygainfilter->rate * RMS_WINDOW_TIME + 1000-1) / 1000; - - if ( ! ReallocateWindowBuffer(sampleWindow, &lstepbuf) || - ! ReallocateWindowBuffer(sampleWindow, &rstepbuf) || - ! ReallocateWindowBuffer(sampleWindow, &loutbuf) || - ! ReallocateWindowBuffer(sampleWindow, &routbuf) ) { - - return INIT_GAIN_ANALYSIS_ERROR; - } - - /* zero out initial values */ - for ( i = 0; i < MAX_ORDER; i++ ) - linprebuf[i] = lstepbuf[i] = loutbuf[i] = rinprebuf[i] = rstepbuf[i] = routbuf[i] = 0.; - - lsum = 0.; - rsum = 0.; - totsamp = 0; - - memset ( A, 0, sizeof(A) ); - - return INIT_GAIN_ANALYSIS_OK; -} - -int -ValidGainFrequency ( long samplefreq ) -{ - struct ReplayGainFilter* gainfilter = CreateGainFilter( samplefreq ); - - free(gainfilter); - - return gainfilter != 0; -} - -int -InitGainAnalysis ( long samplefreq ) -{ - if (ResetSampleFrequency(samplefreq) != INIT_GAIN_ANALYSIS_OK) { - return INIT_GAIN_ANALYSIS_ERROR; - } - - linpre = linprebuf + MAX_ORDER; - rinpre = rinprebuf + MAX_ORDER; - lstep = lstepbuf + MAX_ORDER; - rstep = rstepbuf + MAX_ORDER; - lout = loutbuf + MAX_ORDER; - rout = routbuf + MAX_ORDER; - - memset ( B, 0, sizeof(B) ); - - return INIT_GAIN_ANALYSIS_OK; -} - -/* returns GAIN_ANALYSIS_OK if successful, GAIN_ANALYSIS_ERROR if not */ - -int -AnalyzeSamples ( const flac_float_t* left_samples, const flac_float_t* right_samples, size_t num_samples, int num_channels ) -{ - unsigned downsample = replaygainfilter->downsample; - const flac_float_t* curleft; - const flac_float_t* curright; - long prebufsamples; - long batchsamples; - long cursamples; - long cursamplepos; - int i; - - num_samples /= downsample; - - if ( num_samples == 0 ) - return GAIN_ANALYSIS_OK; - - cursamplepos = 0; - batchsamples = num_samples; - - switch ( num_channels) { - case 1: right_samples = left_samples; - case 2: break; - default: return GAIN_ANALYSIS_ERROR; - } - - prebufsamples = MAX_ORDER; - if ((size_t) prebufsamples > num_samples) - prebufsamples = num_samples; - - for ( i = 0; i < prebufsamples; ++i ) { - linprebuf[i+MAX_ORDER] = left_samples [i * downsample]; - rinprebuf[i+MAX_ORDER] = right_samples[i * downsample]; - } - - while ( batchsamples > 0 ) { - cursamples = batchsamples > (long)(sampleWindow-totsamp) ? (long)(sampleWindow - totsamp) : batchsamples; - if ( cursamplepos < MAX_ORDER ) { - downsample = 1; - curleft = linpre+cursamplepos; - curright = rinpre+cursamplepos; - if (cursamples > MAX_ORDER - cursamplepos ) - cursamples = MAX_ORDER - cursamplepos; - } - else { - downsample = replaygainfilter->downsample; - curleft = left_samples + cursamplepos * downsample; - curright = right_samples + cursamplepos * downsample; - } - - filter ( curleft , lstep + totsamp, cursamples, replaygainfilter->AYule, replaygainfilter->BYule, YULE_ORDER, downsample ); - filter ( curright, rstep + totsamp, cursamples, replaygainfilter->AYule, replaygainfilter->BYule, YULE_ORDER, downsample ); - - filter ( lstep + totsamp, lout + totsamp, cursamples, replaygainfilter->AButter, replaygainfilter->BButter, BUTTER_ORDER, 1 ); - filter ( rstep + totsamp, rout + totsamp, cursamples, replaygainfilter->AButter, replaygainfilter->BButter, BUTTER_ORDER, 1 ); - - for ( i = 0; i < cursamples; i++ ) { /* Get the squared values */ - lsum += lout [totsamp+i] * lout [totsamp+i]; - rsum += rout [totsamp+i] * rout [totsamp+i]; - } - - batchsamples -= cursamples; - cursamplepos += cursamples; - totsamp += cursamples; - if ( totsamp == sampleWindow ) { /* Get the Root Mean Square (RMS) for this set of samples */ - double val = STEPS_per_dB * 10. * log10 ( (lsum+rsum) / totsamp * 0.5 + 1.e-37 ); - int ival = (int) val; - if ( ival < 0 ) ival = 0; - if ( ival >= (int)(sizeof(A)/sizeof(*A)) ) ival = (int)(sizeof(A)/sizeof(*A)) - 1; - A [ival]++; - lsum = rsum = 0.; - memmove ( loutbuf , loutbuf + totsamp, MAX_ORDER * sizeof(flac_float_t) ); - memmove ( routbuf , routbuf + totsamp, MAX_ORDER * sizeof(flac_float_t) ); - memmove ( lstepbuf, lstepbuf + totsamp, MAX_ORDER * sizeof(flac_float_t) ); - memmove ( rstepbuf, rstepbuf + totsamp, MAX_ORDER * sizeof(flac_float_t) ); - totsamp = 0; - } - if ( totsamp > sampleWindow ) /* somehow I really screwed up: Error in programming! Contact author about totsamp > sampleWindow */ - return GAIN_ANALYSIS_ERROR; - } - - if ( num_samples < MAX_ORDER ) { - memmove ( linprebuf, linprebuf + num_samples, (MAX_ORDER-num_samples) * sizeof(flac_float_t) ); - memmove ( rinprebuf, rinprebuf + num_samples, (MAX_ORDER-num_samples) * sizeof(flac_float_t) ); - memcpy ( linprebuf + MAX_ORDER - num_samples, left_samples, num_samples * sizeof(flac_float_t) ); - memcpy ( rinprebuf + MAX_ORDER - num_samples, right_samples, num_samples * sizeof(flac_float_t) ); - } - else { - downsample = replaygainfilter->downsample; - - left_samples += (num_samples - MAX_ORDER) * downsample; - right_samples += (num_samples - MAX_ORDER) * downsample; - - for ( i = 0; i < MAX_ORDER; ++i ) { - linprebuf[i] = left_samples [i * downsample]; - rinprebuf[i] = right_samples[i * downsample]; - } - } - - return GAIN_ANALYSIS_OK; -} - - -static flac_float_t -analyzeResult ( uint32_t* Array, size_t len ) -{ - uint32_t elems; - int32_t upper; - size_t i; - - elems = 0; - for ( i = 0; i < len; i++ ) - elems += Array[i]; - if ( elems == 0 ) - return GAIN_NOT_ENOUGH_SAMPLES; - -/* workaround for GCC bug #61423: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61423 */ -#if 0 - upper = (int32_t) ceil (elems * (1. - RMS_PERCENTILE)); -#else - upper = (int32_t) (elems / 20 + ((elems % 20) ? 1 : 0)); -#endif - for ( i = len; i-- > 0; ) { - if ( (upper -= Array[i]) <= 0 ) - break; - } - - return (flac_float_t) ((flac_float_t)PINK_REF - (flac_float_t)i / (flac_float_t)STEPS_per_dB); -} - - -flac_float_t -GetTitleGain ( void ) -{ - flac_float_t retval; - unsigned int i; - - retval = analyzeResult ( A, sizeof(A)/sizeof(*A) ); - - for ( i = 0; i < sizeof(A)/sizeof(*A); i++ ) { - B[i] += A[i]; - A[i] = 0; - } - - for ( i = 0; i < MAX_ORDER; i++ ) - linprebuf[i] = lstepbuf[i] = loutbuf[i] = rinprebuf[i] = rstepbuf[i] = routbuf[i] = 0.f; - - totsamp = 0; - lsum = rsum = 0.; - return retval; -} - - -flac_float_t -GetAlbumGain ( void ) -{ - return analyzeResult ( B, sizeof(B)/sizeof(*B) ); -} - -/* end of replaygain_analysis.c */ diff --git a/deps/flac-1.3.2/src/share/replaygain_analysis/replaygain_analysis_static.vcproj b/deps/flac-1.3.2/src/share/replaygain_analysis/replaygain_analysis_static.vcproj deleted file mode 100644 index 152d827..0000000 --- a/deps/flac-1.3.2/src/share/replaygain_analysis/replaygain_analysis_static.vcproj +++ /dev/null @@ -1,180 +0,0 @@ -<?xml version="1.0" encoding="Windows-1252"?>
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