int cdfs_cdda_file_read(struct inode * inode, char * buf, size_t count, unsigned start, int raw)
{
unsigned stop=start+count;
int status=0;
if (raw) //For audio CD raw=0, CDDA will not enter here unless using -option, let raw=1
{ //Audio CD will not enter here
status=cdfs_copy_from_cd(inode->i_sb, inode->i_ino, start, stop, buf);
}
else
{
//#define WAV_HEADER_SIZE 44 @ all.h
//PRINT("david: start=%d, stop=%d\n",start,stop);
if (start < WAV_HEADER_SIZE)
{
if (stop > WAV_HEADER_SIZE)
{ //Enter here once to make the file header
//david: recurrsively calling subroutine!!
status=cdfs_cdda_file_read( inode, buf, WAV_HEADER_SIZE-start, start , 0 );
status=cdfs_cdda_file_read( inode, buf+WAV_HEADER_SIZE-start, stop-WAV_HEADER_SIZE, WAV_HEADER_SIZE, 0 );
}
else
{
char temp[44];
cdfs_make_header(temp, inode->i_size);
memcpy(buf, temp+start, stop-start);
}
}
else
{
start -= WAV_HEADER_SIZE;
stop -= WAV_HEADER_SIZE;
status=cdfs_copy_from_cd(inode->i_sb, inode->i_ino, start, stop, buf);
}
}
return status;
}
void cdfs_cdda_file_read(struct inode * inode, char * buf, size_t count, unsigned start, int raw){
unsigned stop=start+count;
PRINT("cdda_file_read(%x, %x, %d, %d)\n", inode, buf, count, start);
if (raw) {
cdfs_copy_from_cd(inode->i_sb, inode->i_ino, start, stop, buf);
} else {
if (start < WAV_HEADER_SIZE) {
if (stop > WAV_HEADER_SIZE) {
cdfs_cdda_file_read( inode, buf, WAV_HEADER_SIZE-start, start , 0 );
cdfs_cdda_file_read( inode, buf+WAV_HEADER_SIZE-start, stop-WAV_HEADER_SIZE, WAV_HEADER_SIZE, 0 );
} else {
char temp[44];
cdfs_make_header(temp, inode->i_size);
memcpy(buf, temp+start, stop-start);
}
} else {
start -= WAV_HEADER_SIZE;
stop -= WAV_HEADER_SIZE;
cdfs_copy_from_cd(inode->i_sb, inode->i_ino, start, stop, buf);
}
}
}
