unsigned int write_track_block(TZX_FILE *pTZXfile, struct membuf tracks[], int first_track, int last_track)
{
char blockbuf[MAX_BLOCK_SIZE];
int track;
int track_count = last_track - first_track + 1;
int block_ptr = (track_count+1) * 2; // space for pointer table at start plus 0x0000 terminator
int block_tbl_ptr = 0;
printf("writing tracks %d-%d\n", first_track, last_track);
memset(blockbuf, 0, MAX_BLOCK_SIZE);
for (track = first_track; track <= last_track; track++)
{
int track_len = membuf_memlen(&tracks[track]);
if (track_len > 0) // skip null tracks
{
memcpy(blockbuf+block_ptr, membuf_get(&tracks[track]), track_len);
blockbuf[block_tbl_ptr++] = block_ptr & 0xff;
blockbuf[block_tbl_ptr++] = block_ptr >> 8;
membuf_free(&tracks[track]);
block_ptr += track_len;
}
}
void membuf_delete(struct membuf **sbp)
{
struct membuf *sb;
sb = *sbp;
membuf_free(sb);
free(sb);
sb = NULL;
*sbp = sb;
}
static int membuf_release(struct inode *in, struct file *file)
{
struct membuf *buf = (struct membuf *)file->private_data;
membuf_unmap(buf);
membuf_free(buf);
kfree(buf);
return 0;
}
void sbe_free(struct sbe *e)
{
membuf_free(e->mb);
}
