44 bit difference
|
View:
New views
5 Messages
—
Rating Filter:
Alert me
|
 |
44 bit difference
by Cuke
::
Rate this Message:
my extracted audio track differ from the cd-paranoia's one of 44bit.My track isn't played either..this is the i use for extraction. the qdebug() function is just for display debug info in qt project. where i'm mistaking?
cdrom_drive_t *d = NULL; char **ppsz_cd_drives; ppsz_cd_drives = cdio_get_devices_with_cap(NULL, CDIO_FS_AUDIO, false); if (ppsz_cd_drives) { d=cdda_identify(*ppsz_cd_drives, 1, NULL); }else{ qDebug() << "Unable to access to a cdrom with audio cd in it"; return; } cdio_free_device_list(ppsz_cd_drives); if ( !d ) { qDebug() << "Unable to identify audio CD disc.\n"; return; } cdda_verbose_set(d, CDDA_MESSAGE_PRINTIT, CDDA_MESSAGE_PRINTIT); if ( 0 != cdda_open(d) ) { qDebug() << "Unable to open disc.\n"; return; } cdrom_paranoia_t* p = cdio_paranoia_init(d); lsn_t i_first_lsn = cdda_disc_firstsector(d); if ( -1 == i_first_lsn ) { qDebug() << "Trouble getting starting LSN\n"; } else { lsn_t i_cursor; track_t i_track = cdda_sector_gettrack(d, i_first_lsn); lsn_t i_last_lsn = cdda_track_lastsector(d, i_track); //paranoia_modeset(p, PARANOIA_MODE_FULL^PARANOIA_MODE_NEVERSKIP); paranoia_seek(p, i_first_lsn, SEEK_SET); qDebug() << i_first_lsn << "-" << i_last_lsn; QFile file(tr("outtrack.wav")); if(!file.open(QIODevice::WriteOnly|QIODevice::Append)){ qDebug() << "impossibile aprire il file di scrittura"; } for ( i_cursor = i_first_lsn; i_cursor <= i_last_lsn; i_cursor ++) { int16_t *p_readbuf=paranoia_read(p, NULL); char *psz_err=cdda_errors(d); char *psz_mes=cdda_messages(d); if (psz_mes || psz_err) qDebug() << psz_err << psz_mes; if (psz_err) free(psz_err); if (psz_mes) free(psz_mes); if( !p_readbuf ) { qDebug() << "paranoia read error. Stopping.\n"; break; } char *temp= (char*) p_readbuf; file.write(temp,(qint64)CDIO_CD_FRAMESIZE_RAW); } file.close(); qDebug() << i_first_lsn << "\t" << i_last_lsn ; qDebug() << cdda_track_firstsector(d,i_track); } paranoia_free(p); cdda_close(d); return; |
|
|
Re: 44 bit difference
by Cuke
::
Rate this Message:
if you need more info i'm here!
|
|
|
Re: 44 bit difference
by Cuke
::
Rate this Message:
Ok so with the help of rocky i found that my program i post you didn't add the wav header. So i just add this lines of code after the OUTFILE open:
//Get the track size in bytes and conver int bytes= ( i_last_lsn - i_first_lsn + 1 ) * CDIO_CD_FRAMESIZE_RAW; cout << "Nr Bytes:" << bytes+44 << endl; //Open the output file ofstream outfile ("temp.wav",ofstream::binary | ofstream::app | ofstream::out); //Waw format header specification int waweChunkLength=bytes+44-8; int fmtChunkLength=16; int compressionCode=1; int numberOfChannels=2; int sampleRate=44100; int blockAlign=44100*2*2; int significantBps=4; int extraFormatBytes=16; outfile.write("RIFF",4); outfile.write((char*)&waweChunkLength,4); outfile.write("WAVEfmt ",8); outfile.write((char*)&fmtChunkLength,4); outfile.write((char*)&compressionCode,2); outfile.write((char*)&numberOfChannels,2); outfile.write((char*)&sampleRate,4); outfile.write((char*)&blockAlign,4); outfile.write((char*)&significantBps,2); outfile.write((char*)&extraFormatBytes,2); outfile.write("data",4); outfile.write((char*)&bytes,4); //Track Rip for ( i_cursor = i_first_lsn; i_cursor <= i_last_lsn; i_cursor ++) { Bare in mind hwr that the (char *) conversion is platform dependent and that this changed doesn't deal with endianness. main.cpp i included a working c++ source file. |
|
|
Re: 44 bit difference
by Robert William Fuller
::
Rate this Message:
So it was a 44 byte difference, not a "44 bit" difference. I might have
guessed something like that if you had said "bytes" instead of "bits" in the subject. It helps to be very careful when you state a problem. I'm glad to hear you solved it :-) Cuke wrote: > Ok so with the help of rocky i found that my program i post you didn't add > the wav header. So i just add this lines of code after the OUTFILE open: > > //Get the track size in bytes and conver > int bytes= ( i_last_lsn - i_first_lsn + 1 ) * CDIO_CD_FRAMESIZE_RAW; > cout << "Nr Bytes:" << bytes+44 << endl; > > //Open the output file > ofstream outfile ("temp.wav",ofstream::binary | ofstream::app | > ofstream::out); > > //Waw format header specification > int waweChunkLength=bytes+44-8; > int fmtChunkLength=16; > int compressionCode=1; > int numberOfChannels=2; > int sampleRate=44100; > int blockAlign=44100*2*2; > int significantBps=4; > int extraFormatBytes=16; > > outfile.write("RIFF",4); > outfile.write((char*)&waweChunkLength,4); > outfile.write("WAVEfmt ",8); > outfile.write((char*)&fmtChunkLength,4); > outfile.write((char*)&compressionCode,2); > outfile.write((char*)&numberOfChannels,2); > outfile.write((char*)&sampleRate,4); > outfile.write((char*)&blockAlign,4); > outfile.write((char*)&significantBps,2); > outfile.write((char*)&extraFormatBytes,2); > outfile.write("data",4); > outfile.write((char*)&bytes,4); > > //Track Rip > for ( i_cursor = i_first_lsn; i_cursor <= i_last_lsn; i_cursor ++) { > > Bare in mind hwr that the (char *) conversion is platform dependent and that > this changed doesn't deal with endianness. > http://www.nabble.com/file/p23128111/main.cpp main.cpp i included a working > c++ source file. _______________________________________________ Libcdio-help mailing list Libcdio-help@... http://lists.gnu.org/mailman/listinfo/libcdio-help |
|
|
Re: 44 bit difference
by Cuke
::
Rate this Message:
yes, sorry! :)
|
| Free embeddable forum powered by Nabble | Forum Help |
