static int receive(struct sr_input *in, GString *buf)
{
struct context *inc;
int ret;
g_string_append_len(in->buf, buf->str, buf->len);
if (in->buf->len < MIN_DATA_CHUNK_OFFSET) {
/*
* Don't even try until there's enough room
* for the data segment to start.
*/
return SR_OK;
}
inc = in->priv;
if (!in->sdi_ready) {
if ((ret = parse_wav_header(in->buf, inc)) == SR_ERR_NA)
/* Not enough data yet. */
return SR_OK;
else if (ret != SR_OK)
return ret;
/* sdi is ready, notify frontend. */
in->sdi_ready = TRUE;
return SR_OK;
}
ret = process_buffer(in);
return ret;
}
static int format_match(GHashTable *metadata)
{
GString *buf;
int ret;
buf = g_hash_table_lookup(metadata, GINT_TO_POINTER(SR_INPUT_META_HEADER));
if (strncmp(buf->str, "RIFF", 4))
return SR_ERR;
if (strncmp(buf->str + 8, "WAVE", 4))
return SR_ERR;
if (strncmp(buf->str + 12, "fmt ", 4))
return SR_ERR;
/*
* Only gets called when we already know this is a WAV file, so
* this parser can log error messages.
*/
if ((ret = parse_wav_header(buf, NULL)) != SR_OK)
return ret;
return SR_OK;
}
int main(void) {
FRESULT res;
WORD br;
sei(); // Globally enable interrupts
hibernate_init();
DAC_init();
keys_init();
if (pf_mount(&fs)) { sound_osch(); }
else { sound_gut(); }
while(1) {
cli(); // disable interrupts to avoid race condition with sleep function
if (FLAG_CHECK(NEW_SOUND)) {
hibernate_timer_stop();
FLAG_CLEAR(NEW_SOUND);
sei();
switch (special_mode) {
case 1:
if (new_sound_id == old_sound_id - 1) {
special_mode = 2;
goto sound_ende;
} else if (new_sound_id == old_sound_id + 1) {
special_mode = 4;
goto sound_ende;
} else if (new_sound_id == old_sound_id) {
credits_counter = CREDITS_COUNTER_MAX - 5;
special_mode = 0;
goto sound_ende;
} else special_mode = 0;
break;
case 2:
special_mode = 3;
break;
case 4:
special_mode = 5;
break;
default:
special_mode = 0;
}
if (new_sound_id == 36) {
special_mode = 1;
goto sound_ende;
}
old_sound_id = new_sound_id;
char* filename;
if (++credits_counter > CREDITS_COUNTER_MAX) {
credits_counter = 0;
filename = "image.hex";
} else {
if (new_sound_id == 255) goto sound_ende;
filename = filenames(bank, new_sound_id);
}
uint8_t tries = 3;
while (pf_open(filename) && pf_open("error1.wav")) {
if ((tries--) == 0) goto sound_ende;
_delay_ms(10);
pf_mount(&fs);
}
if (parse_wav_header()) {
if (pf_open("error2.wav") || parse_wav_header()) goto sound_ende;
}
do {
#define read_length 16384
if (wavinfo.data_length > read_length) {
res = pf_read(0, read_length, &br);
wavinfo.data_length -= read_length;
} else {
res = pf_read(0, wavinfo.data_length, &br);
break;
}
} while (res==0 && br==read_length && wavinfo.data_length>0 && !FLAG_CHECK(NEW_SOUND));
stop_audio();
sound_ende:
hibernate_timer_init();
} else {
sleep_enable();
sei();
sleep_cpu();
sleep_disable();
}
hibernate_check();
}
}
