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some audio problems fixed, missing files added

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@31 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2007-02-08 20:12:45 +00:00
parent 7a93adeb29
commit abe0ea43b5
9 changed files with 583 additions and 288 deletions
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134
platform/gp2x/code940/940.c
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@ -6,10 +6,11 @@ static unsigned char *mp3_data = (unsigned char *) 0x01000000;
YM2612 *ym2612_940;
// from init.s
void wait_irq(void);
int wait_get_job(int oldjob);
void spend_cycles(int c);
void cache_clean(void);
void cache_clean_flush(void);
void dcache_clean(void);
void dcache_clean_flush(void);
void drain_wb(void);
// this should help to resolve race confition where shared var
// is changed by other core just before we update it
void set_if_not_changed(int *val, int oldval, int newval);
@ -41,7 +42,6 @@ static void mp3_decode(void)
shared_data->mp3_buffer[shared_ctl->mp3_buffsel], 0);
if (err) {
if (err == ERR_MP3_INDATA_UNDERFLOW) {
shared_ctl->mp3_offs = shared_ctl->mp3_len; // EOF
set_if_not_changed(&shared_ctl->mp3_offs, mp3_offs, shared_ctl->mp3_len);
return;
} else if (err <= -6 && err >= -12) {
@ -56,97 +56,73 @@ static void mp3_decode(void)
}
void Main940(int startvector, int pc_at_irq)
void Main940(void)
{
int mix_buffer = shared_data->mix_buffer;
int *ym_buffer = shared_data->ym_buffer;
int job = 0;
ym2612_940 = &shared_data->ym2612;
// debug
shared_ctl->vstarts[startvector]++;
shared_ctl->last_irq_pc = pc_at_irq;
// asm volatile ("mcr p15, 0, r0, c7, c10, 4" ::: "r0");
// for (;;)
for (;;)
{
int job_num = 0;
/*
while (!shared_ctl->busy)
job = wait_get_job(job);
shared_ctl->lastjob = job;
switch (job)
{
//shared_ctl->waitc++;
spend_cycles(8*1024);
}
*/
/*
if (!shared_ctl->busy)
{
wait_irq();
}
shared_ctl->lastbusy = shared_ctl->busy;
*/
case JOB940_INITALL:
/* ym2612 */
shared_ctl->writebuff0[0] = shared_ctl->writebuff1[0] = 0xffff;
YM2612Init_(shared_ctl->baseclock, shared_ctl->rate);
/* Helix mp3 decoder */
shared_data->mp3dec = MP3InitDecoder();
break;
for (job_num = 0; job_num < MAX_940JOBS; job_num++)
{
shared_ctl->lastjob = (job_num << 8) | shared_ctl->jobs[job_num];
case JOB940_INVALIDATE_DCACHE:
drain_wb();
dcache_clean_flush();
break;
switch (shared_ctl->jobs[job_num])
{
case JOB940_INITALL:
/* ym2612 */
shared_ctl->writebuff0[0] = shared_ctl->writebuff1[0] = 0xffff;
YM2612Init_(shared_ctl->baseclock, shared_ctl->rate);
/* Helix mp3 decoder */
shared_data->mp3dec = MP3InitDecoder();
break;
case JOB940_YM2612RESETCHIP:
YM2612ResetChip_();
break;
case JOB940_YM2612RESETCHIP:
YM2612ResetChip_();
break;
case JOB940_PICOSTATELOAD:
YM2612PicoStateLoad_();
break;
case JOB940_PICOSTATELOAD:
YM2612PicoStateLoad_();
break;
case JOB940_YM2612UPDATEONE: {
int i, dw, *wbuff;
if (shared_ctl->writebuffsel == 1) {
wbuff = (int *) shared_ctl->writebuff1;
} else {
wbuff = (int *) shared_ctl->writebuff0;
}
/* playback all writes */
for (i = 2048/2; i > 0; i--) {
UINT16 d;
dw = *wbuff++;
d = dw;
if (d == 0xffff) break;
YM2612Write_(d >> 8, d);
d = (dw>>16);
if (d == 0xffff) break;
YM2612Write_(d >> 8, d);
}
YM2612UpdateOne_(mix_buffer, shared_ctl->length, shared_ctl->stereo, 1);
break;
case JOB940_YM2612UPDATEONE: {
int i, dw, *wbuff;
if (shared_ctl->writebuffsel == 1) {
wbuff = (int *) shared_ctl->writebuff1;
} else {
wbuff = (int *) shared_ctl->writebuff0;
}
case JOB940_MP3DECODE:
mp3_decode();
break;
/* playback all writes */
for (i = 2048/2; i > 0; i--) {
UINT16 d;
dw = *wbuff++;
d = dw;
if (d == 0xffff) break;
YM2612Write_(d >> 8, d);
d = (dw>>16);
if (d == 0xffff) break;
YM2612Write_(d >> 8, d);
}
YM2612UpdateOne_(ym_buffer, shared_ctl->length, shared_ctl->stereo, 1);
break;
}
case JOB940_MP3DECODE:
mp3_decode();
break;
}
cache_clean();
// asm volatile ("mov r0, #0" ::: "r0");
// asm volatile ("mcr p15, 0, r0, c7, c10, 4" ::: "r0"); /* drain write buffer, should be done on nonbuffered write */
// cache_clean_flush();
shared_ctl->loopc++;
// // shared_ctl->busy = 0; // shared mem is not reliable?
wait_irq();
dcache_clean();
}
}