From f180c1a5e8fc889ff1fb390d5cc94cdbc5085046 Mon Sep 17 00:00:00 2001 From: llornkcor Date: Mon, 25 Feb 2002 01:35:47 +0000 Subject: fucked up- no workie.. back out --- (limited to 'core/multimedia/opieplayer/wavplugin/wavplugin.cpp') diff --git a/core/multimedia/opieplayer/wavplugin/wavplugin.cpp b/core/multimedia/opieplayer/wavplugin/wavplugin.cpp index 7f63b3b..0be667f 100644 --- a/core/multimedia/opieplayer/wavplugin/wavplugin.cpp +++ b/core/multimedia/opieplayer/wavplugin/wavplugin.cpp @@ -17,8 +17,6 @@ ** not clear to you. ** **********************************************************************/ -// L.J.Potter added changes Fri 02-15-2002 - #include #include #include @@ -27,7 +25,6 @@ #include #include "wavplugin.h" - //#define debugMsg(a) qDebug(a) #define debugMsg(a) @@ -49,7 +46,7 @@ struct ChunkData { }; -const int sound_buffer_size = 512; // 4096; // you got to be kidding right? +const int sound_buffer_size = 4096; class WavPluginData { @@ -63,134 +60,293 @@ public: int out,max; int samples_due; int samples; - + int freq; + int chan; + int sampleRate; + int resolution; + WavPluginData() { - max = out = sound_buffer_size; - wavedata_remaining = 0; - samples_due = 0; - samples = -1; + max = out = sound_buffer_size; + wavedata_remaining = 0; + samples_due = 0; + samples = -1; } - // expands out samples to the frequency of 44kHz + // expands out samples to the frequency of 44kHz bool add( short *output, long count, long& done, bool stereo ) - { - done = 0; - qApp->processEvents(); - - if ( input == 0 ) { - qDebug("no input"); - return FALSE; - } - - while ( count ) { - int l,r; - if ( getSample(l, r) == FALSE ) { - qDebug("didn't get sample"); + { + qDebug("add"); + done = 0; + + if ( input == 0 ) { + qDebug("no input"); return FALSE; } - samples_due += chunkdata.samplesPerSec; - while ( count && (samples_due > chunkdata.samplesPerSec) ) { - *output++ = l; - if ( stereo ) - *output++ = r; - samples_due -= chunkdata.samplesPerSec; - count--; - done++; + + while ( count ) { + int l,r; + if ( getSample(l, r) == FALSE ) { + qDebug("didn't get sample"); + return FALSE; + } + samples_due += 44100; + while ( count && (samples_due > chunkdata.samplesPerSec) ) { + *output++ = l; + if ( stereo ) + *output++ = r; + samples_due -= chunkdata.samplesPerSec; + count--; + done++; + } } + + return TRUE; } - return TRUE; - } bool initialise() { - if ( input == 0 ) - return FALSE; + qDebug("initialize"); + if ( input == 0 ) + return FALSE; + + wavedata_remaining = -1; + + while ( wavedata_remaining == -1 ) { + // Keep reading chunks... + const int n = sizeof(chunk) - sizeof(chunk.data); + int t = input->readBlock( (char*)&chunk, n ); + if ( t != n ) { + if ( t == -1 ) + return FALSE; + return TRUE; + } + if ( qstrncmp(chunk.id,"data",4) == 0 ) { + samples = wavedata_remaining = chunk.size; + } else if ( qstrncmp(chunk.id,"RIFF",4) == 0 ) { + char d[4]; + if ( input->readBlock(d,4) != 4 ) { + return FALSE; + } + if ( qstrncmp(d,"WAVE",4) != 0 ) { + // skip + if ( chunk.size > 1000000000 || !input->at(input->at()+chunk.size-4) ) { + return FALSE; + } + } + } else if ( qstrncmp(chunk.id,"fmt ",4) == 0 ) { + if ( input->readBlock((char*)&chunkdata,sizeof(chunkdata)) != sizeof(chunkdata) ) { + return FALSE; + } +#define WAVE_FORMAT_PCM 1 + if ( chunkdata.formatTag != WAVE_FORMAT_PCM ) { + qDebug("WAV file: UNSUPPORTED FORMAT %d",chunkdata.formatTag); + return FALSE; + } + } - wavedata_remaining = -1; - while ( wavedata_remaining == -1 ) { - // Keep reading chunks... - const int n = sizeof(chunk) - sizeof(chunk.data); - int t = input->readBlock( (char*)&chunk, n ); - if ( t != n ) { - if ( t == -1 ) - return FALSE; - return TRUE; - } - if ( qstrncmp(chunk.id,"data",4) == 0 ) { - samples = wavedata_remaining = chunk.size; - } else if ( qstrncmp(chunk.id,"RIFF",4) == 0 ) { - char d[4]; - if ( input->readBlock(d,4) != 4 ) { - return FALSE; - } - if ( qstrncmp(d,"WAVE",4) != 0 ) { - // skip - if ( chunk.size > 1000000000 || !input->at(input->at()+chunk.size-4) ) { - return FALSE; - } - } - } else if ( qstrncmp(chunk.id,"fmt ",4) == 0 ) { - if ( input->readBlock((char*)&chunkdata,sizeof(chunkdata)) != sizeof(chunkdata) ) { - return FALSE; - } -#define WAVE_FORMAT_PCM 1 - if ( chunkdata.formatTag != WAVE_FORMAT_PCM ) { - qDebug("WAV file: UNSUPPORTED FORMAT %d",chunkdata.formatTag); - return FALSE; - } - } else { - // ignored chunk - if ( chunk.size > 1000000000 || !input->at(input->at()+chunk.size) ) { - return FALSE; - } - } - } // while - qDebug("bits %d", chunkdata.wBitsPerSample); - return TRUE; + + + else { + // ignored chunk + if ( chunk.size > 1000000000 || !input->at(input->at()+chunk.size) ) { + return FALSE; + } + } + } // while + + return TRUE; } - // gets a sample from the file + // gets a sample from the file bool getSample(int& l, int& r) - { - l = r = 0; + { + l = r = 0; - if ( input == 0 ) - return FALSE; + if ( input == 0 ) + return FALSE; - if ( (wavedata_remaining < 0) || !max ) - return FALSE; + if ( (wavedata_remaining < 0) || !max ) + return FALSE; - if ( out >= max ) { - max = input->readBlock( (char*)data, (uint)QMIN(sound_buffer_size,wavedata_remaining) ); + if ( out >= max ) { + max = input->readBlock( (char*)data, (uint)QMIN(sound_buffer_size,wavedata_remaining) ); - wavedata_remaining -= max; + wavedata_remaining -= max; - out = 0; - if ( max <= 0 ) { - max = 0; - return TRUE; - } - } - if ( chunkdata.wBitsPerSample == 8 ) { - l = (data[out++] - 128) * 128; - } else { - l = ((short*)data)[out/2]; - out += 2; - } - if ( chunkdata.channels == 1 ) { - r = l; - } else { - if ( chunkdata.wBitsPerSample == 8 ) { - r = (data[out++] - 128) * 128; - } else { - r = ((short*)data)[out/2]; - out += 2; - } - } - return TRUE; - } // getSample + out = 0; + if ( max <= 0 ) { + max = 0; + return TRUE; + } + } + if ( resolution == 8 ) { + l = (data[out++] - 128) * 128; + } else { + l = ((short*)data)[out/2]; + out += 2; + } + if ( chan == 1 ) { + r = l; + } else { + if ( resolution == 8 ) { + r = (data[out++] - 128) * 128; + } else { + r = ((short*)data)[out/2]; + out += 2; + } + } + return TRUE; + } // getSample + +////////////////////////////////////////////////////// +int getWavSettings(int fd) +{ //this came from wmrecord + + char t1[4]; + unsigned long l1; + int found; + short fmt; + unsigned short ch, brate; + unsigned long srate; + + + /* First read in the RIFF identifier. If this is missing then the + * file is not a valid WAVE file. + */ + if (read(fd, t1, 4)<4) { + qDebug(" Could not read from sound file.\n"); + return -1; + } + if (strncmp(t1, "RIFF", 4)) { + qDebug(" not a valid WAV file.\n"); + return -1; + } + /* Advance the file pointer to the next relevant field. */ + lseek(fd, 4, SEEK_CUR); + /* Read in the WAVE identifier. */ + if (read(fd, t1, 4)<4) { + qDebug("Could not read from sound file.\n"); + return -1; + } + if (strncmp(t1, "WAVE", 4)) { + qDebug("not a valid WAV file.\n"); + return -1; + } + /* Search through the file for the format chunk. If the end of the + * file is reached without finding the chunk, then the file is not a + * valid WAVE file. + */ + found = 0; + while (!found) { + if (read(fd, t1, 4)<4) { + qDebug("Could not read from sound file.\n"); + return -1; + } + if (strncmp(t1, "fmt ", 4)) { + /* Determine the length of the chunk found and skip to the next + * chunk. The chunk length is always stored in the four bytes + * following the chunk id. + */ + if (read(fd, &l1, 4)<4) { + qDebug("Could not read from sound file.\n"); + return -1; + } + lseek(fd, l1, SEEK_CUR); + } + else { + /* This is the format chunk, which stores the playback settings + * for the recording. + */ + /* Skip the length field, since we don't really need it. */ + lseek(fd, 4, SEEK_CUR); + /* Read in the format tag. If it has a value of 1, then there is + * no compression and we can attempt to play the file + * back. Otherwise, return. + */ + if (read(fd, &fmt, 2)<2) { + qDebug("Could not read from format chunk.\n"); + return -1; + } + if (fmt != 1) { + qDebug("Wave file contains compressed data." + " Unable to continue.\n"); + return -1; + } + /* Get the stereo mode. */ + if (read(fd, &ch, 2)<2) { + qDebug("Could not read from format chunk.\n"); + return -1; + } + else { + chan = ch; + qDebug("File has %d channels", chan); + } + /* Get the sample rate. */ + if (read(fd, &srate, 4)<4) { + qDebug("Could not read from format chunk.\n"); + return -1; + } + else { + sampleRate = srate; + qDebug("File has samplerate of %d", sampleRate); + } + /* Get the bit rate. This is at the end of the format chunk. */ + lseek(fd, 6, SEEK_CUR); + if (read(fd, &brate, 2)<2) { + qDebug("Could not read from format chunk.\n"); + return -1; + } + else { + resolution = brate; + qDebug("File has bitrate of %d", resolution); + } + + found++; + } + } + + /* Search through the file for the data chunk. If the end of the + * file is reached without finding the chunk, then the file is not a + * valid WAVE file. + */ + found = 0; + while (!found) { + if (read(fd, t1, 4)<4) { + qDebug("Could not read from sound file.\n"); + return -1; + } + if (strncmp(t1, "data", 4)) { + /* Determine the length of the chunk found and skip to the next + * chunk. The chunk length is always stored in the four bytes + * following the chunk id. + */ + if (read(fd, &l1, 4)<4) { + qDebug("Could not read from sound file.\n"); + return -1; + } + lseek(fd, l1, SEEK_CUR); + } + else { + /* This is the data chunk, which stores the recording. */ + /* Get the length field. */ + if (read(fd, &l1, 4)<4) { + qDebug("Could not read from sound file.\n"); + return -1; + } + else { + samples =l1; + qDebug("file has length of %d\nlasting %d seconds",l1, (( l1 / sampleRate) / chan) / 2 ); // ???? + return l1; + } + } + } + + return 0; +} + +////////////////////////////////////////////////// }; @@ -207,7 +363,7 @@ WavPlugin::~WavPlugin() { bool WavPlugin::isFileSupported( const QString& path ) { -// qDebug( "WavPlugin::isFileSupported" ); + debugMsg( "WavPlugin::isFileSupported" ); char *ext = strrchr( path.latin1(), '.' ); @@ -226,7 +382,7 @@ bool WavPlugin::isFileSupported( const QString& path ) { bool WavPlugin::open( const QString& path ) { -// qDebug( "WavPlugin::open" ); + qDebug( "WavPlugin::open" ); d->max = d->out = sound_buffer_size; d->wavedata_remaining = 0; @@ -234,12 +390,13 @@ bool WavPlugin::open( const QString& path ) { d->input = new QFile( path ); if ( d->input->open(IO_ReadOnly) == FALSE ) { - qDebug("couldn't open file"); - delete d->input; - d->input = 0; - return FALSE; + qDebug("couldn't open file"); + delete d->input; + d->input = 0; + return FALSE; } - + +// d->getWavSettings( d->input.handle()); d->initialise(); return TRUE; @@ -247,7 +404,7 @@ bool WavPlugin::open( const QString& path ) { bool WavPlugin::close() { -// qDebug( "WavPlugin::close" ); + qDebug( "WavPlugin::close" ); d->input->close(); delete d->input; @@ -257,44 +414,45 @@ bool WavPlugin::close() { bool WavPlugin::isOpen() { -// qDebug( "WavPlugin::isOpen" ); + qDebug( "WavPlugin::isOpen" ); return ( d->input != 0 ); } int WavPlugin::audioStreams() { -// qDebug( "WavPlugin::audioStreams" ); + qDebug( "WavPlugin::audioStreams" ); return 1; } int WavPlugin::audioChannels( int ) { -// qDebug( "WavPlugin::audioChannels" ); - return d->chunkdata.channels;// 2; // ### Always scale audio to stereo samples + debugMsg( "WavPlugin::audioChannels" ); + return d->chan; } int WavPlugin::audioFrequency( int ) { -// qDebug( "WavPlugin::audioFrequency %d", d->chunkdata.samplesPerSec ); - return d->chunkdata.samplesPerSec; //44100; // ### Always scale to frequency of 44100 + qDebug( "WavPlugin::audioFrequency" ); + return d->freq; } int WavPlugin::audioSamples( int ) { -// qDebug( "WavPlugin::audioSamples" ); - return d->samples / d->chunkdata.channels/2; // ### Scaled samples will be made stereo, - // Therefore if source is mono we will double the number of samples + qDebug( "WavPlugin::audioSamples" ); + return d->samples; +// return d->samples * 2 / d->chunkdata.channels; // ### Scaled samples will be made stereo, +// // Therefore if source is mono we will double the number of samples } bool WavPlugin::audioSetSample( long, int ) { -// qDebug( "WavPlugin::audioSetSample" ); + qDebug( "WavPlugin::audioSetSample" ); return FALSE; } long WavPlugin::audioGetSample( int ) { -// qDebug( "WavPlugin::audioGetSample" ); + qDebug( "WavPlugin::audioGetSample" ); return 0; } @@ -324,18 +482,13 @@ bool WavPlugin::audioReadStereoSamples( short *output, long samples, long& sampl */ bool WavPlugin::audioReadSamples( short *output, int channels, long samples, long& samplesMade, int ) { -// qDebug( "WavPlugin::audioReadSamples" ); + qDebug( "WavPlugin::audioReadSamples" ); return d->add( output, samples, samplesMade, channels != 1 ); } double WavPlugin::getTime() { -// qDebug( "WavPlugin::getTime" ); + qDebug( "WavPlugin::getTime" ); return 0.0; } -int WavPlugin::audioBitsPerSample( int ) { -// qDebug( "WavPlugin::audioFormat %d", d->chunkdata.wBitsPerSample ); - return d->chunkdata.wBitsPerSample; // -} - -- cgit v0.9.0.2