gstreamer/ext/mikmod/mikmod_reader.c

107 lines
2.1 KiB
C
Raw Normal View History

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <unistd.h>
#include <string.h>
#include "gstmikmod.h"
extern int need_sync;
static BOOL GST_READER_Eof ( MREADER *reader );
static BOOL GST_READER_Read( MREADER *reader, void *ptr, size_t size );
static int GST_READER_Get ( MREADER *reader );
static BOOL GST_READER_Seek( MREADER* reader,long offset,int whence );
static long GST_READER_Tell( MREADER* reader );
static BOOL GST_READER_Eof( MREADER *reader )
{
GST_READER *gst_reader;
gst_reader = ( GST_READER * ) reader;
return gst_reader->eof;
}
static BOOL GST_READER_Read( MREADER *reader, void *ptr, size_t size )
{
GST_READER *gst_reader;
gst_reader = ( GST_READER * ) reader;
memcpy( ptr, GST_BUFFER_DATA( gst_reader->mik->Buffer ) + gst_reader->offset, size);
gst_reader->offset = gst_reader->offset + size;
return 1;
}
static int GST_READER_Get ( MREADER *reader )
{
GST_READER *gst_reader;
int res;
gst_reader = ( GST_READER * ) reader;
res = *( GST_BUFFER_DATA( gst_reader->mik->Buffer ) + gst_reader->offset );
gst_reader->offset += 1;
return res;
}
static BOOL GST_READER_Seek( MREADER *reader, long offset, int whence )
{
GST_READER *gst_reader;
gst_reader = ( GST_READER * ) reader;
if ( whence == SEEK_SET )
gst_reader->offset = offset;
else
gst_reader->offset += offset;
return 1;
}
static long GST_READER_Tell( MREADER *reader )
{
GST_READER *gst_reader;
gst_reader = ( GST_READER * ) reader;
return gst_reader->offset;
}
MREADER *GST_READER_new( GstMikMod *mik )
{
GST_READER *gst_reader;
gst_reader = ( GST_READER * ) g_malloc( sizeof( GST_READER ));
gst_reader->offset = 0;
gst_reader->eof = 0;
gst_reader->mik = mik;
if ( gst_reader )
{
gst_reader->core.Eof = &GST_READER_Eof;
gst_reader->core.Read = &GST_READER_Read;
gst_reader->core.Get = &GST_READER_Get;
gst_reader->core.Seek = &GST_READER_Seek;
gst_reader->core.Tell = &GST_READER_Tell;
}
return ( MREADER *)gst_reader;
}
void GST_READER_free ( MREADER *reader )
{
if ( reader )
g_free( reader );
}