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gigextract.cpp

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00001 /***************************************************************************
00002  *                                                                         *
00003  *   libgig - C++ cross-platform Gigasampler format file loader library    *
00004  *                                                                         *
00005  *   Copyright (C) 2003-2005 by Christian Schoenebeck                      *
00006  *                              <cuse@users.sourceforge.net>               *
00007  *                                                                         *
00008  *   This program is free software; you can redistribute it and/or modify  *
00009  *   it under the terms of the GNU General Public License as published by  *
00010  *   the Free Software Foundation; either version 2 of the License, or     *
00011  *   (at your option) any later version.                                   *
00012  *                                                                         *
00013  *   This program is distributed in the hope that it will be useful,       *
00014  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
00015  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
00016  *   GNU General Public License for more details.                          *
00017  *                                                                         *
00018  *   You should have received a copy of the GNU General Public License     *
00019  *   along with this program; if not, write to the Free Software           *
00020  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston,                 *
00021  *   MA  02111-1307  USA                                                   *
00022  ***************************************************************************/
00023 
00024 #ifdef HAVE_CONFIG_H
00025 #include <config.h>
00026 #endif
00027 
00028 // just for testing the disk streaming capability of libgig;
00029 // you will also need to set this to 1 at the moment if you want to
00030 // extract compressed samples, as I haven't implemented the
00031 // decompression algorithm in gig::Sample::LoadSampleData() yet
00032 #define USE_DISK_STREAMING      1
00033 
00034 // only when USE_DISK_STREAMING is set to 1:
00035 // just for testing the disk stream capability; with this option set
00036 // gigextract will read the samples in smaller pieces, just to stress
00037 // gig::Sample::Read() method a bit
00038 #define HASHED_READS_TEST       1
00039 
00040 #include <iostream>
00041 #include <cstdlib>
00042 #include <string.h>
00043 #include <string>
00044 #include <stdlib.h>
00045 #include <sys/types.h>
00046 #include <sys/stat.h>
00047 #include <dirent.h>
00048 #include <errno.h>
00049 #include <dlfcn.h>
00050 
00051 // only libsndfile is available for Windows, so we use that for writing the sound files
00052 #ifdef WIN32
00053 # define HAVE_SNDFILE 1
00054 #endif // WIN32
00055 
00056 // we prefer libsndfile before libaudiofile
00057 #if HAVE_SNDFILE
00058 # include <sndfile.h>
00059 #else
00060 # include <audiofile.h>
00061 #endif // HAVE_SNDFILE
00062 
00063 #include "gig.h"
00064 
00065 using namespace std;
00066 
00067 typedef map<unsigned int, bool> OrderMap;
00068 OrderMap* pOrderedSamples = NULL;
00069 
00070 string Revision();
00071 void PrintVersion();
00072 void PrintUsage();
00073 void ExtractSamples(gig::File* gig, char* destdir, OrderMap* ordered);
00074 int writeWav(const char* filename, void* samples, long samplecount, int channels, int bitdepth, long rate);
00075 string ToString(int i);
00076 
00077 #ifndef HAVE_SNDFILE
00078 void* hAFlib; // handle to libaudiofile
00079 void openAFlib(void);
00080 void closeAFlib(void);
00081 // pointers to libaudiofile functions
00082 AFfilesetup(*_afNewFileSetup)(void);
00083 void(*_afFreeFileSetup)(AFfilesetup);
00084 void(*_afInitChannels)(AFfilesetup,int,int);
00085 void(*_afInitSampleFormat)(AFfilesetup,int,int,int);
00086 void(*_afInitFileFormat)(AFfilesetup,int);
00087 void(*_afInitRate)(AFfilesetup,int,double);
00088 int(*_afWriteFrames)(AFfilehandle,int,const void*,int);
00089 AFfilehandle(*_afOpenFile)(const char*,const char*,AFfilesetup);
00090 int(*_afCloseFile)(AFfilehandle file);
00091 #endif // !HAVE_SNDFILE
00092 
00093 int main(int argc, char *argv[]) {
00094      if (argc >= 2) {
00095         if (argv[1][0] == '-') {
00096             switch (argv[1][1]) {
00097                 case 'v':
00098                     PrintVersion();
00099                     return EXIT_SUCCESS;
00100             }
00101         }
00102     }
00103     if (argc < 3) {
00104         PrintUsage();
00105         return EXIT_FAILURE;
00106     }
00107     if (argc > 3) { // extracting specific samples
00108         pOrderedSamples = new OrderMap;
00109         for (int i = 3; i < argc; i++) {
00110             unsigned int index = atoi(argv[i]);
00111             (*pOrderedSamples)[index] = true;
00112         }
00113     }
00114     FILE* hFile = fopen(argv[1], "r");
00115     if (!hFile) {
00116         cout << "Invalid input file argument!" << endl;
00117         return EXIT_FAILURE;
00118     }
00119     fclose(hFile);
00120     DIR* dir = opendir(argv[2]);
00121     if (!dir) {
00122         cout << "Unable to open DESTDIR: ";
00123         switch (errno) {
00124             case EACCES:  cout << "Permission denied." << endl;
00125                           break;
00126             case EMFILE:  cout << "Too many file descriptors in use by process." << endl;
00127                           break;
00128             case ENFILE:  cout << "Too many files are currently open in the system." << endl;
00129                           break;
00130             case ENOENT:  cout << "Directory does not exist, or name is an empty string." << endl;
00131                           break;
00132             case ENOMEM:  cout << "Insufficient memory to complete the operation." << endl;
00133                           break;
00134             case ENOTDIR: cout << "Is not a directory." << endl;
00135                           break;
00136             default:      cout << "Unknown error" << endl;
00137         }
00138         return EXIT_FAILURE;
00139     }
00140     if (dir) closedir(dir);
00141     try {
00142         RIFF::File* riff = new RIFF::File(argv[1]);
00143         gig::File*  gig  = new gig::File(riff);
00144         cout << "Extracting samples from \"" << argv[1] << "\" to directory \"" << argv[2] << "\"." << endl << flush;
00145         ExtractSamples(gig, argv[2], pOrderedSamples);
00146         cout << "Extraction finished." << endl << flush;
00147         delete gig;
00148         delete riff;
00149         if (pOrderedSamples) delete pOrderedSamples;
00150     }
00151     catch (RIFF::Exception e) {
00152         e.PrintMessage();
00153         return EXIT_FAILURE;
00154     }
00155     catch (...) {
00156         cout << "Unknown exception while trying to parse file." << endl;
00157         return EXIT_FAILURE;
00158     }
00159 
00160     return EXIT_SUCCESS;
00161 }
00162 
00163 void ExtractSamples(gig::File* gig, char* destdir, OrderMap* ordered) {
00164 #ifndef HAVE_SNDFILE
00165     hAFlib = NULL;
00166     openAFlib();
00167 #endif // !HAVE_SNDFILE
00168     uint8_t* pWave  = NULL;
00169     long BufferSize = 0;
00170     int samples     = 0;
00171     cout << "Seeking for available samples..." << flush;
00172     gig::Sample* pSample = gig->GetFirstSample();
00173     cout << "OK" << endl << flush;
00174     while (pSample) {
00175         samples++;
00176         if (ordered) {
00177             if ((*ordered)[samples] == false) {
00178                 pSample = gig->GetNextSample();
00179                 continue;
00180             }
00181         }
00182         string name = pSample->pInfo->Name;
00183         string filename = destdir;
00184         if (filename[filename.size() - 1] != '/') filename += "/";
00185         filename += ToString(samples);
00186         filename += "_";
00187         if (name == "") {
00188             name = "(NO NAME)";
00189             filename += "NONAME";
00190         }
00191         else {
00192             filename += name;
00193             name.insert(0, "\"");
00194             name += "\"";
00195         }
00196         filename += ".wav";
00197         if (pSample->Compressed) cout << "Decompressing ";
00198         else                     cout << "Extracting ";
00199         cout << "Sample " << samples << ") " << name << " (" << pSample->BitDepth <<"Bits, " << pSample->SamplesPerSecond << "Hz, " << pSample->Channels << " Channels, " << pSample->SamplesTotal << " Samples)..." << flush;
00200 
00201 
00202 #if USE_DISK_STREAMING
00203         long neededsize = (pSample->Compressed) ? 10485760 /* 10 MB buffer */
00204                                                 : pSample->SamplesTotal * pSample->FrameSize;
00205         if (BufferSize < neededsize) {
00206             if (pWave) delete[] pWave;
00207             pWave = new uint8_t[neededsize];
00208             BufferSize = neededsize;
00209         }
00210 #  if HASHED_READS_TEST
00211         unsigned long readsamples     = 0,
00212                       readinthisrun   = 0,
00213                       samplepiecesize = 2000;
00214         uint8_t* pSamplePiece = pWave;
00215         do { // we read the sample in small pieces and increment the size with each run just to test streaming capability
00216             readinthisrun = pSample->Read(pSamplePiece, ++samplepiecesize);
00217             // 24 bit is truncated to 16 by Sample::Read at the moment
00218             pSamplePiece += readinthisrun * (2 * pSample->Channels); // readinthisrun * pSample->FrameSize;
00219             readsamples  += readinthisrun;
00220         } while (readinthisrun == samplepiecesize);
00221 
00222         if (pSample->Compressed) { // hack
00223             pSample->SamplesTotal = readsamples;
00224             pSample->BitDepth = 16;
00225         }
00226 #  else // read in one piece
00227         if (pSample->Compressed) {
00228             pSample->SamplesTotal = pSample->Read(pWave, 10485760 >> 2); // assumes 16 bit stereo
00229         }
00230         else {
00231             pSample->Read(pWave, pSample->SamplesTotal);
00232         }
00233 #  endif // HASHED_READS_TEST
00234 #else // no disk streaming
00235         if (pSample->Compressed) {
00236             cout << "Sorry, sample is compressed and Sample::LoadSampleData() has no decompression routine yet! - Solution: set USE_DISK_STREAMING in gigextract.cpp (line 29) to 1 and recompile!" << endl;
00237         }
00238         else pWave = (uint8_t*) pSample->LoadSampleData(); // load wave into RAM
00239 #endif // USE_DISK_STREAMING
00240         if (pWave) {
00241             int res = writeWav(filename.c_str(),
00242                                pWave,
00243                                pSample->SamplesTotal,
00244                                pSample->Channels,
00245                                pSample->BitDepth,
00246                                pSample->SamplesPerSecond);
00247             if (res < 0) cout << "Couldn't write sample data." << endl;
00248             else cout << "ok" << endl;
00249             pSample->ReleaseSampleData(); // free wave from RAM
00250         }
00251         else cout << "Failed to load sample data." << endl;
00252 
00253         pSample = gig->GetNextSample();
00254     }
00255     if (pWave) delete[] (uint8_t*) pWave;
00256 #ifndef HAVE_SNDFILE
00257     closeAFlib();
00258 #endif // !HAVE_SNDFILE
00259 }
00260 
00261 int writeWav(const char* filename, void* samples, long samplecount, int channels, int bitdepth, long rate) {
00262 #if HAVE_SNDFILE
00263     SNDFILE* hfile;
00264     SF_INFO  sfinfo;
00265     int format = SF_FORMAT_WAV;
00266     switch (bitdepth) {
00267         case 8:
00268             format |= SF_FORMAT_PCM_S8;
00269             cout << "8 bit" << endl << flush;
00270             break;
00271         case 16:
00272             format |= SF_FORMAT_PCM_16;
00273             cout << "16 bit" << endl << flush;
00274             break;
00275         case 24:
00276             format |= SF_FORMAT_PCM_24;
00277             cout << "24 bit" << endl << flush;
00278             break;
00279         case 32:
00280             format |= SF_FORMAT_PCM_32;
00281             cout << "32 bit" << endl << flush;
00282             break;
00283         default:
00284             cerr << "Error: Bithdepth " << ToString(bitdepth) << " not supported by libsndfile, ignoring sample!\n" << flush;
00285             return -1;
00286     }
00287     memset(&sfinfo, 0, sizeof (sfinfo));
00288     sfinfo.samplerate = rate;
00289     sfinfo.frames     = samplecount;
00290     sfinfo.channels   = channels;
00291     sfinfo.format     = format;
00292     if (!(hfile = sf_open(filename, SFM_WRITE, &sfinfo))) {
00293         cerr << "Error: Unable to open output file \'" << filename << "\'.\n" << flush;
00294         return -1;
00295     }
00296     if (sf_write_short(hfile, (short*)samples, channels * samplecount) != channels * samplecount) {
00297         cerr << sf_strerror(hfile) << endl << flush;
00298         sf_close(hfile);
00299         return -1;
00300     }
00301     sf_close(hfile);
00302 #else
00303     AFfilesetup setup = _afNewFileSetup();
00304     _afInitFileFormat(setup, AF_FILE_WAVE);
00305     _afInitChannels(setup, AF_DEFAULT_TRACK, channels);
00306     _afInitSampleFormat(setup, AF_DEFAULT_TRACK, AF_SAMPFMT_TWOSCOMP, bitdepth);
00307     _afInitRate(setup, AF_DEFAULT_TRACK, rate);
00308     if (setup == AF_NULL_FILESETUP) return -1;
00309     AFfilehandle hFile = _afOpenFile(filename, "w", setup);
00310     if (hFile == AF_NULL_FILEHANDLE) return -1;
00311     if (_afWriteFrames(hFile, AF_DEFAULT_TRACK, samples, samplecount) < 0) return -1;
00312     _afCloseFile(hFile);
00313     _afFreeFileSetup(setup);
00314 #endif // HAVE_SNDFILE
00315 
00316     return 0; // success
00317 }
00318 
00319 #ifndef HAVE_SNDFILE
00320 void openAFlib() {
00321     hAFlib = dlopen("libaudiofile.so", RTLD_NOW);
00322     if (!hAFlib) {
00323         cout << "Unable to load library libaudiofile.so: " << dlerror() << endl;
00324         return;
00325     }
00326     _afNewFileSetup     = (AFfilesetup(*)(void)) dlsym(hAFlib, "afNewFileSetup");
00327     _afFreeFileSetup    = (void(*)(AFfilesetup)) dlsym(hAFlib, "afFreeFileSetup");
00328     _afInitChannels     = (void(*)(AFfilesetup,int,int)) dlsym(hAFlib, "afInitChannels");
00329     _afInitSampleFormat = (void(*)(AFfilesetup,int,int,int)) dlsym(hAFlib, "afInitSampleFormat");
00330     _afInitFileFormat   = (void(*)(AFfilesetup,int)) dlsym(hAFlib, "afInitFileFormat");
00331     _afInitRate         = (void(*)(AFfilesetup,int,double)) dlsym(hAFlib, "afInitRate");
00332     _afWriteFrames      = (int(*)(AFfilehandle,int,const void*,int)) dlsym(hAFlib, "afWriteFrames");
00333     _afOpenFile         = (AFfilehandle(*)(const char*,const char*,AFfilesetup)) dlsym(hAFlib, "afOpenFile");
00334     _afCloseFile        = (int(*)(AFfilehandle file)) dlsym(hAFlib, "afCloseFile");
00335     if (dlerror()) cout << "Failed to load function from libaudiofile.so: " << dlerror() << endl;
00336 }
00337 
00338 void closeAFlib() {
00339     if (hAFlib) dlclose(hAFlib);
00340 }
00341 #endif // !HAVE_SNDFILE
00342 
00343 string Revision() {
00344     string s = "$Revision: 1.6 $";
00345     return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword
00346 }
00347 
00348 void PrintVersion() {
00349     cout << "gigextract revision " << Revision() << endl;
00350     cout << "using " << gig::libraryName() << " " << gig::libraryVersion();
00351     #if HAVE_SNDFILE
00352     char versionBuffer[128];
00353     sf_command(NULL, SFC_GET_LIB_VERSION, versionBuffer, 128);
00354     cout << ", " << versionBuffer;
00355     #endif // HAVE_SNDFILE
00356     cout << endl;
00357     #if !HAVE_SNDFILE
00358     cout << "built against libaudiofile "
00359          << LIBAUDIOFILE_MAJOR_VERSION << "." << LIBAUDIOFILE_MINOR_VERSION
00360     # ifdef LIBAUDIOFILE_MICRO_VERSION
00361          << "." << LIBAUDIOFILE_MICRO_VERSION
00362     # endif // LIBAUDIOFILE_MICRO_VERSION
00363          << endl;
00364     #endif // !HAVE_SNDFILE
00365 }
00366 
00367 void PrintUsage() {
00368     cout << "gigextract - extracts samples from a Gigasampler file." << endl;
00369     cout << endl;
00370     cout << "Usage: gigextract [-v] GIGFILE DESTDIR [SAMPLENR] [ [SAMPLENR] ...]" << endl;
00371     cout << endl;
00372     cout << "   GIGFILE  Input Gigasampler (.gig) file." << endl;
00373     cout << endl;
00374     cout << "   DESTDIR  Destination directory where all .wav files will be written to." << endl;
00375     cout << endl;
00376     cout << "   SAMPLENR Index (/indices) of Sample(s) which should be extracted." << endl;
00377     cout << "            If no sample indices are given, all samples will be extracted" << endl;
00378     cout << "            (use gigdump to look for available samples)." << endl;
00379     cout << endl;
00380     cout << "   -v       Print version and exit." << endl;
00381     cout << endl;
00382 }
00383 
00384 string ToString(int i) {
00385     static char strbuf[1024];
00386     sprintf(strbuf,"%d",i);
00387     string s = strbuf;
00388     return s;
00389 }

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