/*
* write method of the file structure
*/
unsigned int
wav_write(struct file *file, unsigned char *data, unsigned int count)
{
struct wav *f = (struct wav *)file;
unsigned int n;
if (f->wbytes >= 0 && count > f->wbytes) {
count = f->wbytes; /* wbytes fits in count */
if (count == 0) {
#ifdef DEBUG
if (debug_level >= 3) {
wav_dbg(f);
dbg_puts(": write complete\n");
}
#endif
file_hup(&f->pipe.file);
return 0;
}
}
n = pipe_write(file, data, count);
if (f->wbytes >= 0)
f->wbytes -= n;
f->endpos += n;
return n;
}
unsigned int
siofile_write(struct file *file, unsigned char *data, unsigned int count)
{
struct siofile *f = (struct siofile *)file;
unsigned int n;
#ifdef DEBUG
if (f->wtickets == 0) {
file_dbg(&f->file);
dbg_puts(": called with no write tickets\n");
}
#endif
if (count > f->wtickets)
count = f->wtickets;
n = f->started ? sio_write(f->hdl, data, count) : 0;
if (n == 0) {
f->file.state &= ~FILE_WOK;
if (sio_eof(f->hdl)) {
#ifdef DEBUG
dbg_puts(f->file.name);
dbg_puts(": failed to write on device\n");
#endif
file_hup(&f->file);
} else {
#ifdef DEBUG
if (debug_level >= 4) {
file_dbg(&f->file);
dbg_puts(": writing blocked\n");
}
#endif
}
return 0;
} else {
f->wtickets -= n;
if (f->wtickets == 0) {
f->file.state &= ~FILE_WOK;
#ifdef DEBUG
if (debug_level >= 4) {
file_dbg(&f->file);
dbg_puts(": write tickets exhausted\n");
}
#endif
}
}
return n;
}