bool SoundFileStream::displayData
( int ch, double f_beg, double f_dur,
short *minBuffer, short *maxBuffer, short *minRMS, short *maxRMS, int bufferSize )
{
bool ok = _data != 0
&& ch < channels()
&& ( f_beg >= beginning() )
&& ( f_beg + f_dur <= beginning() + duration() );
if( !ok ) return false;
double fpu = f_dur / bufferSize;
double f_pos = f_beg - _dataOffset;
double f_pos_max = _dataSize;
short min = SHRT_MAX;
short max = SHRT_MIN;
double D_SHRT_MAX = (double) SHRT_MAX;
double D_SHRT_MIN = (double) SHRT_MIN;
int i;
for( i = 0; i < bufferSize; ++i ) {
int data_pos = floor(f_pos);
// increment position
// slower, but error-proof:
// f_pos = (double)(i+1) / width() * f_dur + f_beg;
// the following is a faster variant, but floating point operations are fallible,
// so we need to make sure we stay within the constraints of f_dur;
double f_pos1 = f_pos + fpu;
if( f_pos1 > f_pos_max ) f_pos1 = f_pos_max;
int frame_count = ceil(f_pos1) - data_pos;
float frac0 = data_pos + 1.f - f_pos;
float frac1 = f_pos1 + 1.f - ceil(f_pos1);
// get min, max and sum
short *samples = _data + (data_pos * channels()) + ch;
float sum = 0.f;
float sum2 = 0.f;
int f; // frame
for( f = 0; f < frame_count; ++f, samples += channels() ){
// TODO should we overlap min-max or not here?
float sample = *samples;
float frac;
if( f == 0 ) frac = frac0;
else if( f == frame_count - 1 ) frac = frac1;
else frac = 1.0;
if( sample < min ) min = sample;
if( sample > max ) max = sample;
sum += sample * frac;
sum2 += sample * sample * frac;
}
double n = fpu;
double avg = sum / n;
double stdDev = sqrt( abs((sum2 - (sum*avg) ) / n) );
minBuffer[i] = min;
maxBuffer[i] = max;
minRMS[i] = std::max(D_SHRT_MIN, std::min(D_SHRT_MAX, avg - stdDev ));
maxRMS[i] = std::max(D_SHRT_MIN, std::min(D_SHRT_MAX, avg + stdDev ));
f_pos = f_pos1;
min = maxBuffer[i];
max = minBuffer[i];
}
return true;
}
qint32 cMediaInfo::writeFilename()
{
QSqlQuery query;
query.prepare("SELECT id FROM file WHERE fileName=:fileName AND fileSize=:fileSize AND fileDate=:fileDate;");
query.bindValue(":fileName", fileName());
query.bindValue(":fileSize", fileSize());
query.bindValue(":fileDate", fileDate());
if(!query.exec())
{
myDebug << query.lastError().text();
return(-1);
}
if(query.next())
query.prepare("UPDATE file SET fileType=:fileType, length=:length, bitrate=:bitrate, sampleRate=:sampleRate, channels=:channels, bitsPerSample=:bitsPerSample, layer=:layer, version=:version, sampleWidth=:sampleWidth, sampleFrames=:sampleFrames, isEncrypted=:isEncrypted, trackGain=:trackGain, albumGain=:albumGain, trackPeak=:trackPeak, albumPeak=:albumPeak, protectionEnabled=:protectionEnabled, channelMode=:channelMode, isCopyrighted=:isCopyrighted, isOriginal=:isOriginal, album=:album, title=:title, copyright=:copyright, trackNumber=:trackNumber, contentGroupDescription=:contentGroupDescription, subTitle=:subTitle, originalAlbum=:originalAlbum, partOfSet=:partOfSet, subTitleOfSet=:subTitleOfSet, internationalStandardRecordingCode=:internationalStandardRecordingCode, leadArtist=:leadArtist, band=:band, conductor=:conductor, interpret=:interpret, originalArtist=:originalArtist, textWriter=:textWriter, originalTextWriter=:originalTextWriter, composer=:composer, encodedBy=:encodedBy, beatsPerMinute=:beatsPerMinute, language=:language, contentType=:contentType, mediaType=:mediaType, mood=:mood, producedNotice=:producedNotice, publisher=:publisher, fileOwner=:fileOwner, internetRadioStationName=:internetRadioStationName, internetRadioStationOwner=:internetRadioStationOwner, originalFilename=:originalFilename, playlistDelay=:playlistDelay, encodingTime=:encodingTime, originalReleaseTime=:originalReleaseTime, recordingTime=:recordingTime, releaseTime=:releaseTime, taggingTime=:taggingTime, swhwSettings=:swhwSettings, albumSortOrder=:albumSortOrder, performerSortOrder=:performerSortOrder, titleSortOrder=:titleSortOrder, synchronizedLyrics=:synchronizedLyrics, unsynchronizedLyrics=:unsynchronizedLyrics WHERE filename=:filename AND filesize=:filesize AND filedate=:filedate;");
else
query.prepare("INSERT INTO file (fileName, fileSize, fileDate, fileType, length, bitrate, sampleRate, channels, bitsPerSample, layer, version, sampleWidth, sampleFrames, isEncrypted, trackGain, albumGain, trackPeak, albumPeak, protectionEnabled, channelMode, isCopyrighted, isOriginal, album, title, copyright, trackNumber, contentGroupDescription, subTitle, originalAlbum, partOfSet, subTitleOfSet, internationalStandardRecordingCode, leadArtist, band, conductor, interpret, originalArtist, textWriter, originalTextWriter, composer, encodedBy, beatsPerMinute, language, contentType, mediaType, mood, producedNotice, publisher, fileOwner, internetRadioStationName, internetRadioStationOwner, originalFilename, playlistDelay, encodingTime, originalReleaseTime, recordingTime, releaseTime, taggingTime, swhwSettings, albumSortOrder, performerSortOrder, titleSortOrder, synchronizedLyrics, unsynchronizedLyrics) VALUES (:fileName, :fileSize, :fileDate, :fileType, :length, :bitrate, :sampleRate, :channels, :bitsPerSample, :layer, :version, :sampleWidth, :sampleFrames, :isEncrypted, :trackGain, :albumGain, :trackPeak, :albumPeak, :protectionEnabled, :channelMode, :isCopyrighted, :isOriginal, :album, :title, :copyright, :trackNumber, :contentGroupDescription, :subTitle, :originalAlbum, :partOfSet, :subTitleOfSet, :internationalStandardRecordingCode, :leadArtist, :band, :conductor, :interpret, :originalArtist, :textWriter, :originalTextWriter, :composer, :encodedBy, :beatsPerMinute, :language, :contentType, :mediaType, :mood, :producedNotice, :publisher, :fileOwner, :internetRadioStationName, :internetRadioStationOwner, :originalFilename, :playlistDelay, :encodingTime, :originalReleaseTime, :recordingTime, :releaseTime, :taggingTime, :swhwSettings, :albumSortOrder, :performerSortOrder, :titleSortOrder, :synchronizedLyrics, :unsynchronizedLyrics);");
query.bindValue(":fileName", fileName());
query.bindValue(":fileSize", fileSize());
query.bindValue(":fileDate", fileDate());
query.bindValue(":fileType", fileType());
query.bindValue(":length", length());
query.bindValue(":bitrate", bitrate());
query.bindValue(":sampleRate", sampleRate());
query.bindValue(":channels", channels());
query.bindValue(":bitsPerSample", bitsPerSample());
query.bindValue(":layer", layer());
query.bindValue(":version", version());
query.bindValue(":sampleWidth", sampleWidth());
query.bindValue(":sampleFrames", sampleFrames());
query.bindValue(":isEncrypted", isEncrypted());
query.bindValue(":trackGain", trackGain());
query.bindValue(":albumGain", albumGain());
query.bindValue(":trackPeak", trackPeak());
query.bindValue(":albumPeak", albumPeak());
query.bindValue(":protectionEnabled", protectionEnabled());
query.bindValue(":channelMode", channelMode());
query.bindValue(":isCopyrighted", isCopyrighted());
query.bindValue(":isOriginal", isOriginal());
query.bindValue(":album", album());
query.bindValue(":title", title());
query.bindValue(":copyright", copyright());
query.bindValue(":trackNumber", trackNumber());
query.bindValue(":contentGroupDescription", contentGroupDescription());
query.bindValue(":subTitle", subTitle());
query.bindValue(":originalAlbum", originalAlbum());
query.bindValue(":partOfSet", partOfSet());
query.bindValue(":subTitleOfSet", subTitleOfSet());
query.bindValue(":internationalStandardRecordingCode", internationalStandardRecordingCode());
query.bindValue(":leadArtist", leadArtist());
query.bindValue(":band", band());
query.bindValue(":conductor", conductor());
query.bindValue(":interpret", interpret().join(", "));
query.bindValue(":originalArtist", originalArtist());
query.bindValue(":textWriter", textWriter());
query.bindValue(":originalTextWriter", originalTextWriter());
query.bindValue(":composer", composer());
query.bindValue(":encodedBy", encodedBy());
query.bindValue(":beatsPerMinute", beatsPerMinute());
query.bindValue(":language", language().join(", "));
query.bindValue(":contentType", contentType().join(", "));
query.bindValue(":mediaType", mediaType().join(", "));
query.bindValue(":mood", mood());
query.bindValue(":producedNotice", producedNotice());
query.bindValue(":publisher", publisher());
query.bindValue(":fileOwner", fileOwner());
query.bindValue(":internetRadioStationName", internetRadioStationName());
query.bindValue(":internetRadioStationOwner", internetRadioStationOwner());
query.bindValue(":originalFilename", originalFilename());
query.bindValue(":playlistDelay", playlistDelay());
query.bindValue(":encodingTime", encodingTime());
query.bindValue(":originalReleaseTime", originalReleaseTime());
query.bindValue(":recordingTime", recordingTime());
query.bindValue(":releaseTime", releaseTime());
query.bindValue(":taggingTime", taggingTime());
query.bindValue(":swhwSettings", swhwSettings().join(", "));
query.bindValue(":albumSortOrder", albumSortOrder());
query.bindValue(":performerSortOrder", performerSortOrder());
query.bindValue(":titleSortOrder", titleSortOrder());
query.bindValue(":synchronizedLyrics", synchronizedLyrics().join());
query.bindValue(":unsynchronizedLyrics", unsynchronizedLyrics().join("||"));
if(!query.exec())
{
myDebug << query.lastError().text();
return(-1);
}
query.prepare("SELECT id FROM file WHERE fileName=:fileName AND fileSize=:fileSize AND fileDate=:fileDate;");
query.bindValue(":fileName", fileName());
query.bindValue(":fileSize", fileSize());
query.bindValue(":fileDate", fileDate());
if(!query.exec())
{
myDebug << query.lastError().text();
return(-1);
}
if(query.next())
return(query.value("id").toInt());
return(-1);
}
inline BasicImage<T> BasicImage<T>::copy() const {
return BasicImage(data(), rows(), columns(), channels());
}
ssize_t AudioStreamOutStub::write(const void* buffer, size_t bytes)
{
// fake timing for audio output
usleep(bytes * 1000000 / sizeof(int16_t) / AudioSystem::popCount(channels()) / sampleRate());
return bytes;
}
