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git-svn-id: https://lmms.svn.sf.net/svnroot/lmms/trunk/lmms@40 0778d3d1-df1d-0410-868b-ea421aaaa00d
This commit is contained in:
Tobias Doerffel
2005-12-20 11:14:59 +00:00
parent 156ad36850
commit ffb654bc05
11 changed files with 275 additions and 106 deletions
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131
src/lib/sample_buffer.cpp
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@@ -37,6 +37,7 @@
#include <QFileDialog>
#include <QFileInfo>
#include <QFile>
#include <QBuffer>
#else
@@ -46,6 +47,7 @@
#include <qfiledialog.h>
#include <qfileinfo.h>
#include <qfile.h>
#include <qbuffer.h>
#if QT_VERSION < 0x030100
#include <qregexp.h>
@@ -68,6 +70,14 @@
#include <vorbis/vorbisfile.h>
#endif
#ifdef HAVE_FLAC_STREAM_ENCODER_H
#include <FLAC/stream_encoder.h>
#endif
#ifdef HAVE_FLAC_STREAM_DECODER_H
#include <FLAC/stream_decoder.h>
#endif
#include "sample_buffer.h"
#include "interpolation.h"
@@ -78,6 +88,16 @@
#include "debug.h"
#ifndef QT4
#define write writeBlock
#define read readBlock
#define seek at
#define pos at
#endif
sampleBuffer::sampleBuffer( const QString & _audio_file,
bool _is_base64_data ) :
@@ -379,9 +399,6 @@ Uint32 sampleBuffer::decodeSampleSF( const char * _f, Sint16 * & _buf,
// callback-functions for reading ogg-file
#ifndef QT4
#define read readBlock
#define seek at
#define pos at
#endif
size_t qfileReadCallback( void * _ptr, size_t _size, size_t _n, void * _udata )
@@ -429,9 +446,6 @@ long qfileTellCallback( void * _udata )
return( static_cast<QFile *>( _udata )->pos() );
}
#undef read
#undef seek
#undef pos
@@ -951,6 +965,39 @@ QString sampleBuffer::openAudioFile( void ) const
}
#undef HAVE_FLAC_STREAM_ENCODER_H /* not yet... */
#ifdef HAVE_FLAC_STREAM_ENCODER_H
FLAC__StreamEncoderWriteStatus flacStreamEncoderWriteCallback(
const FLAC__StreamEncoder *
/*_encoder*/,
const FLAC__byte _buffer[],
unsigned int/* _samples*/,
unsigned int _bytes,
unsigned int/* _current_frame*/,
void * _client_data )
{
if( _bytes == 0 )
{
return( FLAC__STREAM_ENCODER_WRITE_STATUS_OK );
}
return( ( static_cast<QBuffer *>( _client_data )->write(
(const char *) _buffer, _bytes ) == -1 ) ?
FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR :
FLAC__STREAM_ENCODER_WRITE_STATUS_OK );
}
void flacStreamEncoderMetadataCallback( const FLAC__StreamEncoder *,
const FLAC__StreamMetadata *
/* _metadata*/,
void * /*_client_data*/ )
{
/* QBuffer * b = static_cast<QBuffer *>( _client_data );
b->seek( 0 );
b->write( (const char *) _metadata, sizeof( *_metadata ) );*/
}
#endif
QString sampleBuffer::toBase64( void ) const
@@ -959,9 +1006,68 @@ QString sampleBuffer::toBase64( void ) const
{
return( "" );
}
#ifdef HAVE_FLAC_STREAM_ENCODER_H
const Uint32 FRAMES_PER_BUF = 1024;
FLAC__StreamEncoder * flac_enc = FLAC__stream_encoder_new();
FLAC__stream_encoder_set_channels( flac_enc, DEFAULT_CHANNELS );
FLAC__stream_encoder_set_blocksize( flac_enc, FRAMES_PER_BUF );
FLAC__stream_encoder_set_do_exhaustive_model_search( flac_enc, TRUE );
// FLAC__stream_encoder_set_do_mid_side_stereo( flac_enc, TRUE );
FLAC__stream_encoder_set_sample_rate( flac_enc,
mixer::inst()->sampleRate() );
QBuffer ba_writer;
ba_writer.open( IO_WriteOnly );
FLAC__stream_encoder_set_client_data( flac_enc, &ba_writer );
FLAC__stream_encoder_set_write_callback( flac_enc,
flacStreamEncoderWriteCallback );
FLAC__stream_encoder_set_metadata_callback( flac_enc,
flacStreamEncoderMetadataCallback );
FLAC__stream_encoder_init( flac_enc );
Uint32 frame_cnt = 0;
while( frame_cnt < m_frames )
{
Uint32 remaining = tMin<Uint32>( FRAMES_PER_BUF,
m_frames - frame_cnt );
FLAC__int32 buf[FRAMES_PER_BUF * DEFAULT_CHANNELS];
for( Uint32 f = 0; f < remaining; ++f )
{
for( Uint8 ch = 0; ch < DEFAULT_CHANNELS; ++ch )
{
buf[f*DEFAULT_CHANNELS+ch] = (FLAC__int32)(
mixer::clip( m_data[f][ch] ) *
OUTPUT_SAMPLE_MULTIPLIER );
}
}
FLAC__stream_encoder_process_interleaved( flac_enc, buf,
remaining );
frame_cnt += remaining;
}
FLAC__stream_encoder_finish( flac_enc );
FLAC__stream_encoder_delete( flac_enc );
ba_writer.close();
#ifdef QT4
return( QByteArray::toBase64( QByteArray( m_data, m_frames ) ) );
return( QByteArray::toBase64( ba_writer.data() ) );
#else
QByteArray ba = ba_writer.buffer();
const Uint32 ssize = ba.size();
const Uint8 * src = (const Uint8 *) ba.data();
#endif
#else /* HAVE_FLAC_STREAM_ENCODER_H */
#ifdef QT4
return( QByteArray( (const char *) m_data, m_frames ).toBase64() );
#else
const Uint32 ssize = m_frames * sizeof( sampleFrame );
const Uint8 * src = (const Uint8 *) m_data;
#endif
#endif /* HAVE_FLAC_STREAM_ENCODER_H */
#ifndef QT4
// code mostly taken from
// qt-x11-opensource-src-4.0.1/src/corelib/tools/qbytearray.cpp
@@ -970,9 +1076,7 @@ QString sampleBuffer::toBase64( void ) const
const char padchar = '=';
int padlen = 0;
Uint32 ssize = m_frames * sizeof( sampleFrame );
Uint32 dsize = ( ( ssize * 4 ) / 3 ) + 3;
const Uint8 * src = (const Uint8 *) m_data;
const Uint32 dsize = ( ( ssize * 4 ) / 3 ) + 3;
char * ptr = new char[dsize + 1];
char * out = ptr;
@@ -1061,7 +1165,7 @@ void sampleBuffer::loadFromBase64( const QString & _data )
m_origFrames = _data.length() * 3 / ( 4 * sizeof( sampleFrame ) );
m_origData = new sampleFrame[m_origFrames];
#ifdef QT4
QByteArray data = QByteArray::fromBase64( _audio_file.toAscii() );
QByteArray data = QByteArray::fromBase64( _data.toAscii() );
memcpy( m_origData, data.data(), data.size() );
#else
// code mostly taken from
@@ -1175,6 +1279,11 @@ void sampleBuffer::deleteResamplingData( void * * _ptr )
}
#undef write
#undef read
#undef seek
#undef pos
#include "sample_buffer.moc"