/*
* This function is an /enumerator/ in the terminology of iteratees
* [http://okmij.org/ftp/Streams.html].
*
* Return value: 0 - success, -1 - error.
*/
static int
process_file(enum Codec_T ct, const char *inpath, struct Buffer *inbuf,
const struct Repr_Format *repr)
{
debug_print("process_file: \"%s\"", inpath);
FILE *f = NULL;
if (streq(inpath, "-")) {
f = stdin;
} else if ((f = fopen(inpath, "rb")) == NULL) {
error(0, errno, "%s", inpath);
return -1;
}
if (adjust_buffer(inbuf, f) < 0) {
error(0, errno, "%s", inpath);
return -1;
}
int retval = -1;
size_t filepos = 0;
struct Stream str = STREAM_INIT;
void *z = NULL;
for (;;) {
const size_t orig_size = read_block(inbuf->wptr, inbuf->size,
f, &str);
str.type = ((str.size = orig_size) == 0) ? S_EOF : S_CHUNK;
str.data = inbuf->wptr;
if (str.type == S_EOF && str.errmsg != NULL) {
error_at_line(0, 0, inpath, filepos, "%s", str.errmsg);
break;
}
const IterV indic = run_codec(ct, &z, &str, repr);
assert(indic == IE_DONE || indic == IE_CONT);
filepos += orig_size - str.size;
if (indic == IE_CONT && str.errmsg != NULL) {
error_at_line(0, 0, inpath, filepos, "%s", str.errmsg);
break;
}
assert(str.size == 0);
if (indic == IE_DONE) {
retval = 0;
break;
}
}
if (!streq(inpath, "-"))
retval |= fclose(f);
free(str.errmsg);
free_codec(ct, z); /* XXX malloc/free for each input file is not good */
return retval;
}
/* Codec thread function */
static void NORETURN_ATTR codec_thread(void)
{
struct queue_event ev;
while (1)
{
cancel_cpu_boost();
queue_wait(&codec_queue, &ev);
switch (ev.id)
{
case Q_CODEC_LOAD:
LOGFQUEUE("codec < Q_CODEC_LOAD");
load_codec((const struct codec_load_info *)ev.data);
break;
case Q_CODEC_RUN:
LOGFQUEUE("codec < Q_CODEC_RUN");
run_codec();
break;
case Q_CODEC_PAUSE:
LOGFQUEUE("codec < Q_CODEC_PAUSE");
break;
case Q_CODEC_SEEK:
LOGFQUEUE("codec < Q_CODEC_SEEK: %lu", (unsigned long)ev.data);
seek_codec(ev.data);
break;
case Q_CODEC_UNLOAD:
LOGFQUEUE("codec < Q_CODEC_UNLOAD");
unload_codec();
break;
case Q_CODEC_DO_CALLBACK:
LOGFQUEUE("codec < Q_CODEC_DO_CALLBACK");
do_callback((void (*)(void))ev.data);
break;
default:
LOGFQUEUE("codec < default : %ld", ev.id);
}
}
}
/* Handle Q_CODEC_SEEK */
static void seek_codec(unsigned long time)
{
if (codec_type == AFMT_UNKNOWN)
{
logf("no codec to seek");
codec_queue_ack(Q_CODEC_SEEK);
codec_seek_complete_callback();
return;
}
/* Post it up one level */
queue_post(&codec_queue, Q_CODEC_SEEK, time);
codec_queue_ack(Q_CODEC_SEEK);
/* Have to run it again */
run_codec();
}