Get rid of peakfile headers... Who needs 'em.

This commit is contained in:
Jonathan Moore Liles 2008-04-17 15:37:38 -05:00
parent 99e93c575e
commit e7b893ca24
2 changed files with 62 additions and 16 deletions

View File

@ -86,6 +86,45 @@ Peaks::fill_buffer ( float fpp, nframes_t s, nframes_t e ) const
/* } */
/* } */
#if 0
const int HEADER_SIZE = 24;
bool
Peaks::read_header ( void )
{
int major, minor;
if ( 2 != fscanf( _fp, "NON-PEAKS%2d%2d", &major, &minor ) )
return false;
if ( major != VERSION_MAJOR )
/* incompatible version */
return false;
int data[3];
int header_size;
fread( &header_size, sizeof( int ), 1, _fp );
if ( header_size < sizeof( data ) )
return false;
fread( data, sizeof( data ), 1, _fp );
int chunksize = data[1];
int channels = data[2];
int peaksize = data[3];
_data_offset = header_size + 12;
if ( header_size > sizeof( data ) )
fseek( _fp, _data_offset, SEEK_SET );
return true;
}
#endif
int
Peaks::read_peakfile_peaks ( Peak *peaks, nframes_t s, int npeaks, int chunksize ) const
{
@ -98,12 +137,14 @@ Peaks::read_peakfile_peaks ( Peak *peaks, nframes_t s, int npeaks, int chunksize
}
/* get chunk size of peak file */
int pfchunksize = 0;
if ( fread( &pfchunksize, sizeof( int ), 1, fp ) != 1 )
{
printf( "invalid peak file!\n" );
return 0;
}
/* FIXME: bogus */
int pfchunksize = 256;
/* if ( fread( &pfchunksize, sizeof( int ), 1, fp ) != 1 ) */
/* { */
/* printf( "invalid peak file!\n" ); */
/* return 0; */
/* } */
int channels = _clip->channels();
const int ratio = chunksize / pfchunksize;
@ -343,8 +384,8 @@ Peaks::make_peaks ( int chunksize )
return false;
}
/* write chunksize first */
fwrite( &chunksize, sizeof( int ), 1, fp );
/* /\* write chunksize first *\/ */
/* fwrite( &chunksize, sizeof( int ), 1, fp ); */
Peak peaks[ _clip->channels() ];
@ -392,14 +433,12 @@ Peaks::make_peaks ( int chunksize )
Peak_Writer::Peak_Writer ( const char *filename, int chunksize, int channels )
{
_channels = channels;
_channels = channels;
_chunksize = chunksize;
_index = 0;
_peak = new Peak[ channels ];
memset( _peak, 0, sizeof( Peak ) * channels );
@ -407,7 +446,7 @@ Peak_Writer::Peak_Writer ( const char *filename, int chunksize, int channels )
if ( ! ( _fp = fopen( peakname( filename ), "w" ) ) )
/* error! */;
write_header();
// write_header();
}
Peak_Writer::~Peak_Writer ( )
@ -423,14 +462,19 @@ Peak_Writer::write_header ( void )
int data[] = { _chunksize, _channels, sizeof( Peak ) };
int size = sizeof( data );
fwrite( &size, sizeof( size ), 1, _fp );
fwrite( &data, sizeof( data ), 1, _fp );
}
/** append peaks for samples in /buf/ to peakfile */
void
Peak_Writer::write ( sample_t *buf, nframes_t nframes )
{
for ( int i = _chunksize; nframes--; --i, buf += _channels )
for ( ; nframes--; ++_index, buf += _channels )
{
for ( int j = 0; j < _channels; ++j )
{
@ -442,11 +486,11 @@ Peak_Writer::write ( sample_t *buf, nframes_t nframes )
p->min = *buf;
}
if ( ! i )
if ( _index == _chunksize - 1 )
{
fwrite( _peak, sizeof( Peak ), _channels, _fp );
memset( _peak, 0, sizeof( Peak ) * _channels );
i = _chunksize;
_index = 0;
}
}

View File

@ -118,6 +118,8 @@ class Peak_Writer
int _chunksize;
int _channels;
int _index;
public:
Peak_Writer ( const char *filename, int chunksize, int channels );