--- /dev/null
+/* grabbag - Convenience lib for various routines common to several tools
+ * Copyright (C) 2002 Josh Coalson
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#if defined _MSC_VER || defined __MINGW32__
+#include <sys/utime.h> /* for utime() */
+#include <io.h> /* for chmod(), _setmode(), unlink() */
+#include <fcntl.h> /* for _O_BINARY */
+#else
+#include <sys/types.h> /* some flavors of BSD (like OS X) require this to get time_t */
+#include <utime.h> /* for utime() */
+#endif
+#ifdef __CYGWIN__
+#include <io.h> /* for setmode(), O_BINARY */
+#include <fcntl.h> /* for _O_BINARY */
+#endif
+#include <sys/stat.h> /* for stat(), maybe chmod() */
+#if defined _WIN32 && !defined __CYGWIN__
+#else
+#include <unistd.h> /* for unlink() */
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h> /* for strrchr() */
+#include "share/grabbag.h"
+
+
+GRABBAG_API void grabbag__file_copy_metadata(const char *srcpath, const char *destpath)
+{
+ struct stat srcstat;
+ struct utimbuf srctime;
+
+ if(0 == stat(srcpath, &srcstat)) {
+ srctime.actime = srcstat.st_atime;
+ srctime.modtime = srcstat.st_mtime;
+ (void)chmod(destpath, srcstat.st_mode);
+ (void)utime(destpath, &srctime);
+ }
+}
+
+GRABBAG_API off_t grabbag__file_get_filesize(const char *srcpath)
+{
+ struct stat srcstat;
+
+ if(0 == stat(srcpath, &srcstat))
+ return srcstat.st_size;
+ else
+ return -1;
+}
+
+GRABBAG_API const char *grabbag__file_get_basename(const char *srcpath)
+{
+ const char *p;
+
+ p = strrchr(srcpath, '/');
+ if(0 == p) {
+ p = strrchr(srcpath, '\\');
+ if(0 == p)
+ return srcpath;
+ }
+ return ++p;
+}
+
+GRABBAG_API FLAC__bool grabbag__file_change_stats(const char *filename, FLAC__bool read_only)
+{
+ struct stat stats;
+
+ if(0 == stat(filename, &stats)) {
+#if !defined _MSC_VER && !defined __MINGW32__
+ if(read_only) {
+ stats.st_mode &= ~S_IWUSR;
+ stats.st_mode &= ~S_IWGRP;
+ stats.st_mode &= ~S_IWOTH;
+ }
+ else {
+ stats.st_mode |= S_IWUSR;
+ }
+#else
+ if(read_only)
+ stats.st_mode &= ~S_IWRITE;
+ else
+ stats.st_mode |= S_IWRITE;
+#endif
+ if(0 != chmod(filename, stats.st_mode))
+ return false;
+ }
+ else
+ return false;
+
+ return true;
+}
+
+GRABBAG_API FLAC__bool grabbag__file_remove_file(const char *filename)
+{
+ return grabbag__file_change_stats(filename, /*read_only=*/false) && 0 == unlink(filename);
+}
+
+GRABBAG_API FILE *grabbag__file_get_binary_stdin()
+{
+ /* if something breaks here it is probably due to the presence or
+ * absence of an underscore before the identifiers 'setmode',
+ * 'fileno', and/or 'O_BINARY'; check your system header files.
+ */
+#if defined _MSC_VER || defined __MINGW32__
+ _setmode(_fileno(stdin), _O_BINARY);
+#elif defined __CYGWIN__
+ /* almost certainly not needed for any modern Cygwin, but let's be safe... */
+ setmode(_fileno(stdin), _O_BINARY);
+#endif
+
+ return stdin;
+}
+
+GRABBAG_API FILE *grabbag__file_get_binary_stdout()
+{
+ /* if something breaks here it is probably due to the presence or
+ * absence of an underscore before the identifiers 'setmode',
+ * 'fileno', and/or 'O_BINARY'; check your system header files.
+ */
+#if defined _MSC_VER || defined __MINGW32__
+ _setmode(_fileno(stdout), _O_BINARY);
+#elif defined __CYGWIN__
+ /* almost certainly not needed for any modern Cygwin, but let's be safe... */
+ setmode(_fileno(stdout), _O_BINARY);
+#endif
+
+ return stdout;
+}
--- /dev/null
+# Microsoft Developer Studio Project File - Name="grabbag" - Package Owner=<4>\r
+# Microsoft Developer Studio Generated Build File, Format Version 6.00\r
+# ** DO NOT EDIT **\r
+\r
+# TARGTYPE "Win32 (x86) Dynamic-Link Library" 0x0102\r
+\r
+CFG=grabbag - Win32 Debug\r
+!MESSAGE This is not a valid makefile. To build this project using NMAKE,\r
+!MESSAGE use the Export Makefile command and run\r
+!MESSAGE \r
+!MESSAGE NMAKE /f "grabbag.mak".\r
+!MESSAGE \r
+!MESSAGE You can specify a configuration when running NMAKE\r
+!MESSAGE by defining the macro CFG on the command line. For example:\r
+!MESSAGE \r
+!MESSAGE NMAKE /f "grabbag.mak" CFG="grabbag - Win32 Debug"\r
+!MESSAGE \r
+!MESSAGE Possible choices for configuration are:\r
+!MESSAGE \r
+!MESSAGE "grabbag - Win32 Release" (based on "Win32 (x86) Dynamic-Link Library")\r
+!MESSAGE "grabbag - Win32 Debug" (based on "Win32 (x86) Dynamic-Link Library")\r
+!MESSAGE \r
+\r
+# Begin Project\r
+# PROP AllowPerConfigDependencies 0\r
+# PROP Scc_ProjName "grabbag"\r
+# PROP Scc_LocalPath "..\..\.."\r
+CPP=cl.exe\r
+MTL=midl.exe\r
+RSC=rc.exe\r
+\r
+!IF "$(CFG)" == "grabbag - Win32 Release"\r
+\r
+# PROP BASE Use_MFC 0\r
+# PROP BASE Use_Debug_Libraries 0\r
+# PROP BASE Output_Dir "Release"\r
+# PROP BASE Intermediate_Dir "Release"\r
+# PROP BASE Target_Dir ""\r
+# PROP Use_MFC 0\r
+# PROP Use_Debug_Libraries 0\r
+# PROP Output_Dir "..\..\..\obj\lib"\r
+# PROP Intermediate_Dir "Release"\r
+# PROP Ignore_Export_Lib 0\r
+# PROP Target_Dir ""\r
+# ADD BASE CPP /nologo /MT /W3 /GX /O2 /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /YX /FD /c\r
+# ADD CPP /nologo /MD /W3 /GR /GX /O2 /I ".\include" /I "..\..\..\include" /D "NDEBUG" /D "REPLAYGAIN_API_EXPORTS" /D "_WINDOWS" /D "_WINDLL" /D "WIN32" /D "_USRDLL" /FR /FD /c\r
+# ADD BASE MTL /nologo /D "NDEBUG" /mktyplib203 /o "NUL" /win32\r
+# ADD MTL /nologo /D "NDEBUG" /mktyplib203 /o "NUL" /win32\r
+# ADD BASE RSC /l 0x409 /d "NDEBUG"\r
+# ADD RSC /l 0x409 /d "NDEBUG" /d "_USRDLL"\r
+BSC32=bscmake.exe\r
+# ADD BASE BSC32 /nologo\r
+# ADD BSC32 /nologo\r
+LINK32=link.exe\r
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:windows /dll /machine:I386\r
+# ADD LINK32 /nologo /subsystem:windows /dll /machine:I386 /out:"..\..\..\obj\bin/grabbag.dll"\r
+\r
+!ELSEIF "$(CFG)" == "grabbag - Win32 Debug"\r
+\r
+# PROP BASE Use_MFC 0\r
+# PROP BASE Use_Debug_Libraries 1\r
+# PROP BASE Output_Dir "Debug"\r
+# PROP BASE Intermediate_Dir "Debug"\r
+# PROP BASE Target_Dir ""\r
+# PROP Use_MFC 0\r
+# PROP Use_Debug_Libraries 1\r
+# PROP Output_Dir "..\..\..\obj\lib"\r
+# PROP Intermediate_Dir "Debug"\r
+# PROP Ignore_Export_Lib 0\r
+# PROP Target_Dir ""\r
+# ADD BASE CPP /nologo /MTd /W3 /Gm /GX /Zi /Od /D "WIN32" /D "_DEBUG" /D "_WINDOWS" /YX /FD /c\r
+# 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\r
+# ADD BASE MTL /nologo /D "_DEBUG" /mktyplib203 /o "NUL" /win32\r
+# ADD MTL /nologo /D "_DEBUG" /mktyplib203 /o "NUL" /win32\r
+# ADD BASE RSC /l 0x409 /d "_DEBUG"\r
+# ADD RSC /l 0x409 /d "_DEBUG" /d "_USRDLL"\r
+BSC32=bscmake.exe\r
+# ADD BASE BSC32 /nologo\r
+# ADD BSC32 /nologo\r
+LINK32=link.exe\r
+# 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\r
+# ADD LINK32 /nologo /subsystem:windows /dll /debug /machine:I386 /out:"..\..\..\obj\bin/grabbag.dll" /pdbtype:sept\r
+\r
+!ENDIF \r
+\r
+# Begin Target\r
+\r
+# Name "grabbag - Win32 Release"\r
+# Name "grabbag - Win32 Debug"\r
+# Begin Group "Source Files"\r
+\r
+# PROP Default_Filter "c"\r
+# Begin Source File\r
+\r
+SOURCE=.\file.c\r
+# End Source File\r
+# Begin Source File\r
+\r
+SOURCE=.\replaygain.c\r
+# End Source File\r
+# Begin Source File\r
+\r
+SOURCE=.\seektable.c\r
+# End Source File\r
+# End Group\r
+# Begin Group "Private Header Files"\r
+\r
+# PROP Default_Filter ""\r
+# Begin Source File\r
+\r
+SOURCE=..\..\..\include\share\grabbag\file.h\r
+# End Source File\r
+# Begin Source File\r
+\r
+SOURCE=..\..\..\include\share\grabbag\replaygain.h\r
+# End Source File\r
+# Begin Source File\r
+\r
+SOURCE=..\..\..\include\share\grabbag\seektable.h\r
+# End Source File\r
+# End Group\r
+# Begin Group "Protected Header Files"\r
+\r
+# PROP Default_Filter ""\r
+# End Group\r
+# Begin Group "Public Header Files"\r
+\r
+# PROP Default_Filter ""\r
+# Begin Source File\r
+\r
+SOURCE=..\..\..\include\share\grabbag.h\r
+# End Source File\r
+# End Group\r
+# End Target\r
+# End Project\r
--- /dev/null
+/* grabbag - Convenience lib for various routines common to several tools
+ * Copyright (C) 2002 Josh Coalson
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include "share/grabbag.h"
+#include "share/gain_analysis.h"
+#include "FLAC/assert.h"
+#include "FLAC/file_decoder.h"
+#include "FLAC/metadata.h"
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#if defined _MSC_VER || defined __MINGW32__
+#include <io.h> /* for chmod() */
+#endif
+#include <sys/stat.h> /* for stat(), maybe chmod() */
+
+#ifdef local_min
+#undef local_min
+#endif
+#define local_min(a,b) ((a)<(b)?(a):(b))
+
+#ifdef local_max
+#undef local_max
+#endif
+#define local_max(a,b) ((a)>(b)?(a):(b))
+
+static const FLAC__byte *tag_title_gain_ = "REPLAYGAIN_TRACK_GAIN";
+static const FLAC__byte *tag_title_peak_ = "REPLAYGAIN_TRACK_PEAK";
+static const FLAC__byte *tag_album_gain_ = "REPLAYGAIN_ALBUM_GAIN";
+static const FLAC__byte *tag_album_peak_ = "REPLAYGAIN_ALBUM_PEAK";
+static const char *peak_format_ = "%s=%1.8f";
+static const char *gain_format_ = "%s=%+2.2f dB";
+
+static double album_peak_, title_peak_;
+
+GRABBAG_API const unsigned GRABBAG__REPLAYGAIN_MAX_TAG_SPACE_REQUIRED = 148;
+/*
+ FLAC__STREAM_METADATA_VORBIS_COMMENT_ENTRY_LENGTH_LEN/8 + 21 + 1 + 10 +
+ FLAC__STREAM_METADATA_VORBIS_COMMENT_ENTRY_LENGTH_LEN/8 + 21 + 1 + 12 +
+ FLAC__STREAM_METADATA_VORBIS_COMMENT_ENTRY_LENGTH_LEN/8 + 21 + 1 + 10 +
+ FLAC__STREAM_METADATA_VORBIS_COMMENT_ENTRY_LENGTH_LEN/8 + 21 + 1 + 12
+*/
+
+
+static FLAC__bool get_file_stats_(const char *filename, struct stat *stats)
+{
+ FLAC__ASSERT(0 != filename);
+ FLAC__ASSERT(0 != stats);
+ return (0 == stat(filename, stats));
+}
+
+static void set_file_stats_(const char *filename, struct stat *stats)
+{
+ FLAC__ASSERT(0 != filename);
+ FLAC__ASSERT(0 != stats);
+
+ (void)chmod(filename, stats->st_mode);
+}
+
+static FLAC__bool append_tag_(FLAC__StreamMetadata *block, const char *format, const FLAC__byte *name, float value)
+{
+ char buffer[256];
+ FLAC__StreamMetadata_VorbisComment_Entry entry;
+
+ FLAC__ASSERT(0 != block);
+ FLAC__ASSERT(block->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
+ FLAC__ASSERT(0 != name);
+ FLAC__ASSERT(0 != value);
+
+ buffer[sizeof(buffer)-1] = '\0';
+ snprintf(buffer, sizeof(buffer)-1, format, name, value);
+
+ entry.entry = buffer;
+ entry.length = strlen(buffer);
+
+ return FLAC__metadata_object_vorbiscomment_insert_comment(block, block->data.vorbis_comment.num_comments, entry, /*copy=*/true);
+}
+
+GRABBAG_API FLAC__bool grabbag__replaygain_is_valid_sample_frequency(unsigned sample_frequency)
+{
+ static const unsigned valid_sample_rates[] = {
+ 8000,
+ 11025,
+ 12000,
+ 16000,
+ 22050,
+ 24000,
+ 32000,
+ 44100,
+ 48000
+ };
+ static const unsigned n_valid_sample_rates = sizeof(valid_sample_rates) / sizeof(valid_sample_rates[0]);
+
+ unsigned i;
+
+ for(i = 0; i < n_valid_sample_rates; i++)
+ if(sample_frequency == valid_sample_rates[i])
+ return true;
+ return false;
+}
+
+GRABBAG_API FLAC__bool grabbag__replaygain_init(unsigned sample_frequency)
+{
+ title_peak_ = album_peak_ = 0.0;
+ return InitGainAnalysis((long)sample_frequency) == INIT_GAIN_ANALYSIS_OK;
+}
+
+GRABBAG_API FLAC__bool grabbag__replaygain_analyze(const FLAC__int32 * const input[], FLAC__bool is_stereo, unsigned bps, unsigned samples)
+{
+ /* using a small buffer improves data locality; we'd like it to fit easily in the dcache */
+ static Float_t lbuffer[2048], rbuffer[2048];
+ static const unsigned nbuffer = sizeof(lbuffer) / sizeof(lbuffer[0]);
+ FLAC__int32 block_peak = 0, s;
+ unsigned i, j;
+
+ FLAC__ASSERT(bps >= 4 && bps <= FLAC__REFERENCE_CODEC_MAX_BITS_PER_SAMPLE);
+ FLAC__ASSERT(FLAC__MIN_BITS_PER_SAMPLE == 4);
+ /*
+ * We use abs() on a FLAC__int32 which is undefined for the most negative value.
+ * If the reference codec ever handles 32bps we will have to write a special
+ * case here.
+ */
+ FLAC__ASSERT(FLAC__REFERENCE_CODEC_MAX_BITS_PER_SAMPLE < 32);
+
+ if(bps == 16) {
+ if(is_stereo) {
+ j = 0;
+ while(samples > 0) {
+ const unsigned n = local_min(samples, nbuffer);
+ for(i = 0; i < n; i++, j++) {
+ s = input[0][j];
+ lbuffer[i] = (Float_t)s;
+ s = abs(s);
+ block_peak = local_max(block_peak, s);
+
+ s = input[1][j];
+ rbuffer[i] = (Float_t)s;
+ s = abs(s);
+ block_peak = local_max(block_peak, s);
+ }
+ samples -= n;
+ if(AnalyzeSamples(lbuffer, rbuffer, n, 2) != GAIN_ANALYSIS_OK)
+ return false;
+ }
+ }
+ else {
+ j = 0;
+ while(samples > 0) {
+ const unsigned n = local_min(samples, nbuffer);
+ for(i = 0; i < n; i++, j++) {
+ s = input[0][j];
+ lbuffer[i] = (Float_t)s;
+ s = abs(s);
+ block_peak = local_max(block_peak, s);
+ }
+ samples -= n;
+ if(AnalyzeSamples(lbuffer, 0, n, 1) != GAIN_ANALYSIS_OK)
+ return false;
+ }
+ }
+ }
+ else { /* bps must be < 32 according to above assertion */
+ const double scale = (
+ (bps > 16)?
+ (double)1. / (double)(1u << (bps - 16)) :
+ (double)(1u << (16 - bps))
+ );
+
+ if(is_stereo) {
+ j = 0;
+ while(samples > 0) {
+ const unsigned n = local_min(samples, nbuffer);
+ for(i = 0; i < n; i++, j++) {
+ s = input[0][j];
+ lbuffer[i] = (Float_t)(scale * (double)s);
+ s = abs(s);
+ block_peak = local_max(block_peak, s);
+
+ s = input[1][j];
+ rbuffer[i] = (Float_t)(scale * (double)s);
+ s = abs(s);
+ block_peak = local_max(block_peak, s);
+ }
+ samples -= n;
+ if(AnalyzeSamples(lbuffer, rbuffer, n, 2) != GAIN_ANALYSIS_OK)
+ return false;
+ }
+ }
+ else {
+ j = 0;
+ while(samples > 0) {
+ const unsigned n = local_min(samples, nbuffer);
+ for(i = 0; i < n; i++, j++) {
+ s = input[0][j];
+ lbuffer[i] = (Float_t)(scale * (double)s);
+ s = abs(s);
+ block_peak = local_max(block_peak, s);
+ }
+ samples -= n;
+ if(AnalyzeSamples(lbuffer, 0, n, 1) != GAIN_ANALYSIS_OK)
+ return false;
+ }
+ }
+ }
+
+ {
+ const double peak_scale = (double)(1u << (bps - 1));
+ double peak = (double)block_peak / peak_scale;
+ if(peak > title_peak_)
+ title_peak_ = peak;
+ if(peak > album_peak_)
+ album_peak_ = peak;
+ }
+
+ return true;
+}
+
+GRABBAG_API void grabbag__replaygain_get_album(float *gain, float *peak)
+{
+ *gain = (float)GetAlbumGain();
+ *peak = (float)album_peak_;
+ album_peak_ = 0.0;
+}
+
+GRABBAG_API void grabbag__replaygain_get_title(float *gain, float *peak)
+{
+ *gain = (float)GetTitleGain();
+ *peak = (float)title_peak_;
+ title_peak_ = 0.0;
+}
+
+
+typedef struct {
+ unsigned channels;
+ unsigned bits_per_sample;
+ unsigned sample_rate;
+ FLAC__bool error;
+} DecoderInstance;
+
+static FLAC__StreamDecoderWriteStatus write_callback_(const FLAC__FileDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data)
+{
+ DecoderInstance *instance = (DecoderInstance*)client_data;
+ const unsigned bits_per_sample = frame->header.bits_per_sample;
+ const unsigned channels = frame->header.channels;
+ const unsigned sample_rate = frame->header.sample_rate;
+ const unsigned samples = frame->header.blocksize;
+
+ (void)decoder;
+
+ if(
+ !instance->error &&
+ (channels == 2 || channels == 1) &&
+ bits_per_sample == instance->bits_per_sample &&
+ channels == instance->channels &&
+ sample_rate == instance->sample_rate
+ ) {
+ instance->error = !grabbag__replaygain_analyze(buffer, channels==2, bits_per_sample, samples);
+ }
+ else {
+ instance->error = true;
+ }
+
+ if(!instance->error)
+ return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
+ else
+ return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
+}
+
+static void metadata_callback_(const FLAC__FileDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data)
+{
+ DecoderInstance *instance = (DecoderInstance*)client_data;
+
+ (void)decoder;
+
+ if(metadata->type == FLAC__METADATA_TYPE_STREAMINFO) {
+ instance->bits_per_sample = metadata->data.stream_info.bits_per_sample;
+ instance->channels = metadata->data.stream_info.channels;
+ instance->sample_rate = metadata->data.stream_info.sample_rate;
+
+ if(instance->channels != 1 && instance->channels != 2) {
+ instance->error = true;
+ return;
+ }
+
+ if(!grabbag__replaygain_is_valid_sample_frequency(instance->sample_rate)) {
+ instance->error = true;
+ return;
+ }
+ }
+}
+
+static void error_callback_(const FLAC__FileDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data)
+{
+ DecoderInstance *instance = (DecoderInstance*)client_data;
+
+ (void)decoder, (void)status;
+
+ instance->error = true;
+}
+
+GRABBAG_API const char *grabbag__replaygain_analyze_file(const char *filename, float *title_gain, float *title_peak)
+{
+ DecoderInstance instance;
+ FLAC__FileDecoder *decoder = FLAC__file_decoder_new();
+
+ if(0 == decoder)
+ return "memory allocation error";
+
+ instance.error = false;
+
+ /* It does these three by default but lets be explicit: */
+ FLAC__file_decoder_set_md5_checking(decoder, false);
+ FLAC__file_decoder_set_metadata_ignore_all(decoder);
+ FLAC__file_decoder_set_metadata_respond(decoder, FLAC__METADATA_TYPE_STREAMINFO);
+
+ FLAC__file_decoder_set_filename(decoder, filename);
+ FLAC__file_decoder_set_write_callback(decoder, write_callback_);
+ FLAC__file_decoder_set_metadata_callback(decoder, metadata_callback_);
+ FLAC__file_decoder_set_error_callback(decoder, error_callback_);
+ FLAC__file_decoder_set_client_data(decoder, &instance);
+
+ if(FLAC__file_decoder_init(decoder) != FLAC__FILE_DECODER_OK) {
+ FLAC__file_decoder_delete(decoder);
+ return "initializing decoder";
+ }
+
+ if(!FLAC__file_decoder_process_until_end_of_file(decoder) || instance.error) {
+ FLAC__file_decoder_delete(decoder);
+ return "decoding file";
+ }
+
+ FLAC__file_decoder_delete(decoder);
+
+ grabbag__replaygain_get_title(title_gain, title_peak);
+
+ return 0;
+}
+
+GRABBAG_API const char *grabbag__replaygain_store_to_vorbiscomment(FLAC__StreamMetadata *block, float album_gain, float album_peak, float title_gain, float title_peak)
+{
+ const char *error;
+
+ if(0 != (error = grabbag__replaygain_store_to_vorbiscomment_title(block, title_gain, title_peak)))
+ return error;
+
+ if(0 != (error = grabbag__replaygain_store_to_vorbiscomment_album(block, album_gain, album_peak)))
+ return error;
+
+ return 0;
+}
+
+GRABBAG_API const char *grabbag__replaygain_store_to_vorbiscomment_album(FLAC__StreamMetadata *block, float album_gain, float album_peak)
+{
+ FLAC__ASSERT(0 != block);
+ FLAC__ASSERT(block->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
+
+ if(
+ FLAC__metadata_object_vorbiscomment_remove_entries_matching(block, tag_album_gain_) < 0 ||
+ FLAC__metadata_object_vorbiscomment_remove_entries_matching(block, tag_album_peak_) < 0
+ )
+ return "memory allocation error";
+
+ if(
+ !append_tag_(block, peak_format_, tag_album_peak_, album_peak) ||
+ !append_tag_(block, gain_format_, tag_album_gain_, album_gain)
+ )
+ return "memory allocation error";
+
+ return 0;
+}
+
+GRABBAG_API const char *grabbag__replaygain_store_to_vorbiscomment_title(FLAC__StreamMetadata *block, float title_gain, float title_peak)
+{
+ FLAC__ASSERT(0 != block);
+ FLAC__ASSERT(block->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
+
+ if(
+ FLAC__metadata_object_vorbiscomment_remove_entries_matching(block, tag_title_gain_) < 0 ||
+ FLAC__metadata_object_vorbiscomment_remove_entries_matching(block, tag_title_peak_) < 0
+ )
+ return "memory allocation error";
+
+ if(
+ !append_tag_(block, peak_format_, tag_title_peak_, title_peak) ||
+ !append_tag_(block, gain_format_, tag_title_gain_, title_gain)
+ )
+ return "memory allocation error";
+
+ return 0;
+}
+
+static const char *store_to_file_pre_(const char *filename, FLAC__Metadata_Chain **chain, FLAC__StreamMetadata **block)
+{
+ FLAC__Metadata_Iterator *iterator;
+ const char *error;
+ FLAC__bool found_vc_block = false;
+
+ if(0 == (*chain = FLAC__metadata_chain_new()))
+ return "memory allocation error";
+
+ if(!FLAC__metadata_chain_read(*chain, filename)) {
+ error = FLAC__Metadata_ChainStatusString[FLAC__metadata_chain_status(*chain)];
+ FLAC__metadata_chain_delete(*chain);
+ return error;
+ }
+
+ if(0 == (iterator = FLAC__metadata_iterator_new())) {
+ FLAC__metadata_chain_delete(*chain);
+ return "memory allocation error";
+ }
+
+ FLAC__metadata_iterator_init(iterator, *chain);
+
+ do {
+ *block = FLAC__metadata_iterator_get_block(iterator);
+ if((*block)->type == FLAC__METADATA_TYPE_VORBIS_COMMENT)
+ found_vc_block = true;
+ } while(!found_vc_block && FLAC__metadata_iterator_next(iterator));
+
+ if(!found_vc_block) {
+ /* create a new block */
+ *block = FLAC__metadata_object_new(FLAC__METADATA_TYPE_VORBIS_COMMENT);
+ if(0 == *block) {
+ FLAC__metadata_chain_delete(*chain);
+ FLAC__metadata_iterator_delete(iterator);
+ return "memory allocation error";
+ }
+ while(FLAC__metadata_iterator_next(iterator))
+ ;
+ if(!FLAC__metadata_iterator_insert_block_after(iterator, *block)) {
+ error = FLAC__Metadata_ChainStatusString[FLAC__metadata_chain_status(*chain)];
+ FLAC__metadata_chain_delete(*chain);
+ FLAC__metadata_iterator_delete(iterator);
+ return error;
+ }
+ /* iterator is left pointing to new block */
+ FLAC__ASSERT(FLAC__metadata_iterator_get_block(iterator) == *block);
+ }
+
+ FLAC__metadata_iterator_delete(iterator);
+
+ FLAC__ASSERT(0 != *block);
+ FLAC__ASSERT((*block)->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
+
+ return 0;
+}
+
+static const char *store_to_file_post_(const char *filename, FLAC__Metadata_Chain *chain, FLAC__bool preserve_modtime)
+{
+ struct stat stats;
+ const FLAC__bool have_stats = get_file_stats_(filename, &stats);
+
+ (void)grabbag__file_change_stats(filename, /*read_only=*/false);
+
+ FLAC__metadata_chain_sort_padding(chain);
+ if(!FLAC__metadata_chain_write(chain, /*use_padding=*/true, preserve_modtime)) {
+ FLAC__metadata_chain_delete(chain);
+ return FLAC__Metadata_ChainStatusString[FLAC__metadata_chain_status(chain)];
+ }
+
+ FLAC__metadata_chain_delete(chain);
+
+ if(have_stats)
+ set_file_stats_(filename, &stats);
+
+ return 0;
+}
+
+GRABBAG_API 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)
+{
+ FLAC__Metadata_Chain *chain;
+ FLAC__StreamMetadata *block;
+ const char *error;
+
+ if(0 != (error = store_to_file_pre_(filename, &chain, &block)))
+ return error;
+
+ if(0 != (error = grabbag__replaygain_store_to_vorbiscomment(block, album_gain, album_peak, title_gain, title_peak))) {
+ FLAC__metadata_chain_delete(chain);
+ return error;
+ }
+
+ if(0 != (error = store_to_file_post_(filename, chain, preserve_modtime)))
+ return error;
+
+ return 0;
+}
+
+GRABBAG_API const char *grabbag__replaygain_store_to_file_album(const char *filename, float album_gain, float album_peak, FLAC__bool preserve_modtime)
+{
+ FLAC__Metadata_Chain *chain;
+ FLAC__StreamMetadata *block;
+ const char *error;
+
+ if(0 != (error = store_to_file_pre_(filename, &chain, &block)))
+ return error;
+
+ if(0 != (error = grabbag__replaygain_store_to_vorbiscomment_album(block, album_gain, album_peak))) {
+ FLAC__metadata_chain_delete(chain);
+ return error;
+ }
+
+ if(0 != (error = store_to_file_post_(filename, chain, preserve_modtime)))
+ return error;
+
+ return 0;
+}
+
+GRABBAG_API const char *grabbag__replaygain_store_to_file_title(const char *filename, float title_gain, float title_peak, FLAC__bool preserve_modtime)
+{
+ FLAC__Metadata_Chain *chain;
+ FLAC__StreamMetadata *block;
+ const char *error;
+
+ if(0 != (error = store_to_file_pre_(filename, &chain, &block)))
+ return error;
+
+ if(0 != (error = grabbag__replaygain_store_to_vorbiscomment_title(block, title_gain, title_peak))) {
+ FLAC__metadata_chain_delete(chain);
+ return error;
+ }
+
+ if(0 != (error = store_to_file_post_(filename, chain, preserve_modtime)))
+ return error;
+
+ return 0;
+}
+
+static FLAC__bool parse_double_(const FLAC__StreamMetadata_VorbisComment_Entry *entry, double *val)
+{
+ char s[32], *end;
+ const char *p, *q;
+ double v;
+
+ FLAC__ASSERT(0 != entry);
+ FLAC__ASSERT(0 != val);
+
+fprintf(stderr,"@@@@ tag=[");fwrite(entry->entry,1,entry->length,stderr);fprintf(stderr,"]\n");
+ p = (const char *)entry->entry;
+ q = strchr(p, '=');
+ if(0 == q)
+ return false;
+ q++;
+ memset(s, 0, sizeof(s)-1);
+ strncpy(s, q, local_min(sizeof(s)-1, entry->length - (q-p)));
+fprintf(stderr,"@@@@ s=[%s]\n",s);
+
+ v = strtod(s, &end);
+ if(end == s)
+ return false;
+
+ *val = v;
+fprintf(stderr,"@@@@ v=[%0.12f]\n",v);
+ return true;
+}
+
+GRABBAG_API FLAC__bool grabbag__replaygain_load_from_vorbiscomment(const FLAC__StreamMetadata *block, FLAC__bool album_mode, double *gain, double *peak)
+{
+ int gain_offset, peak_offset;
+
+ FLAC__ASSERT(0 != block);
+ FLAC__ASSERT(block->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
+
+ if(0 > (gain_offset = FLAC__metadata_object_vorbiscomment_find_entry_from(block, /*offset=*/0, album_mode? tag_album_gain_ : tag_title_gain_)))
+ return false;
+ if(0 > (peak_offset = FLAC__metadata_object_vorbiscomment_find_entry_from(block, /*offset=*/0, album_mode? tag_album_peak_ : tag_title_peak_)))
+ return false;
+
+ if(!parse_double_(block->data.vorbis_comment.comments + gain_offset, gain))
+ return false;
+ if(!parse_double_(block->data.vorbis_comment.comments + peak_offset, peak))
+ return false;
+
+ return true;
+}
+
+GRABBAG_API double grabbag__replaygain_compute_scale_factor(double peak, double gain, double preamp, FLAC__bool prevent_clipping)
+{
+ double scale;
+ FLAC__ASSERT(peak >= 0.0);
+ gain += preamp;
+ scale = (float) pow(10.0, gain * 0.05);
+ if(prevent_clipping && peak > 0.0) {
+ const double max_scale = (float)(1.0 / peak);
+ if(scale > max_scale)
+ scale = max_scale;
+ }
+ return scale;
+}
projects / platform / upstream / flac.git / commitdiff