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[VITA][PSP] New Audio Driver

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This commit is contained in:
Francisco José García García 2017-12-26 16:50:33 +01:00
parent 961972a858
commit c23d84c54f
1 changed files with 78 additions and 69 deletions
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147
audio/drivers/psp_audio.c
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@ -39,13 +39,16 @@ typedef struct psp_audio
{
bool nonblocking;
uint32_t* buffer;
uint32_t* zeroBuffer;
SceUID thread;
int rate;
size_t buffer_size;
size_t period_size;
volatile bool running;
fifo_buffer_t *buffer;
volatile uint16_t read_pos;
volatile uint16_t write_pos;
sthread_t *worker_thread;
slock_t *fifo_lock;
scond_t *cond;
@ -55,11 +58,11 @@ typedef struct psp_audio
#define AUDIO_OUT_COUNT 512u
#define AUDIO_BUFFER_SIZE (1u<<13u)
#define AUDIO_BUFFER_SIZE_MASK (AUDIO_BUFFER_SIZE-1)
static void audioMainLoop(void *data)
{
psp_audio_t* psp = (psp_audio_t*)data;
uint8_t *buf = (uint8_t *)calloc(1, psp->period_size);
#ifdef VITA
int port = sceAudioOutOpenPort(
@ -71,22 +74,34 @@ static void audioMainLoop(void *data)
while (psp->running)
{
size_t avail;
size_t fifo_size;
slock_lock(psp->fifo_lock);
avail = fifo_read_avail(psp->buffer);
fifo_size = MIN(psp->period_size, avail);
fifo_read(psp->buffer, buf, fifo_size);
scond_signal(psp->cond);
slock_unlock(psp->fifo_lock);
bool cond = false;
uint16_t read_pos = psp->read_pos;
uint16_t read_pos_2 = psp->read_pos;
/* If underrun, fill rest with silence. */
memset(buf + fifo_size, 0, psp->period_size - fifo_size);
slock_lock(psp->fifo_lock);
cond = ((uint16_t)(psp->write_pos - read_pos) & AUDIO_BUFFER_SIZE_MASK)
< (AUDIO_OUT_COUNT * 2);
if (!cond)
{
read_pos += AUDIO_OUT_COUNT;
read_pos &= AUDIO_BUFFER_SIZE_MASK;
psp->read_pos = read_pos;
}
slock_unlock(psp->fifo_lock);
slock_lock(psp->cond_lock);
scond_signal(psp->cond);
slock_unlock(psp->cond_lock);
#ifdef VITA
sceAudioOutOutput(port, buf);
sceAudioOutOutput(port,
cond ? (psp->zeroBuffer)
: (psp->buffer + read_pos_2));
#else
sceAudioSRCOutputBlocking(PSP_AUDIO_VOLUME_MAX, buf);
sceAudioSRCOutputBlocking(PSP_AUDIO_VOLUME_MAX, cond ? (psp->zeroBuffer)
: (psp->buffer + read_pos));
#endif
}
@ -96,11 +111,6 @@ static void audioMainLoop(void *data)
sceAudioSRCChRelease();
#endif
slock_lock(psp->cond_lock);
psp->running = false;
scond_signal(psp->cond);
slock_unlock(psp->cond_lock);
free(buf);
return;
}
@ -117,19 +127,24 @@ static void *psp_audio_init(const char *device,
(void)device;
(void)latency;
psp->buffer_size = AUDIO_BUFFER_SIZE * sizeof(uint32_t);
psp->period_size = AUDIO_OUT_COUNT * sizeof(uint32_t);
/* Cache aligned, not necessary but helpful. */
psp->buffer = (uint32_t*)
memalign(64, AUDIO_BUFFER_SIZE * sizeof(uint32_t));
memset(psp->buffer, 0, AUDIO_BUFFER_SIZE * sizeof(uint32_t));
psp->zeroBuffer = (uint32_t*)
memalign(64, AUDIO_OUT_COUNT * sizeof(uint32_t));
memset(psp->zeroBuffer, 0, AUDIO_OUT_COUNT * sizeof(uint32_t));
psp->read_pos = 0;
psp->write_pos = 0;
psp->rate = rate;
psp->fifo_lock = slock_new();
psp->cond_lock = slock_new();
psp->cond = scond_new();
psp->buffer = fifo_new(psp->buffer_size);
psp->rate = rate;
psp->nonblocking = false;
psp->running = true;
psp->worker_thread = sthread_create(audioMainLoop, psp);
return psp;
@ -144,13 +159,10 @@ static void psp_audio_free(void *data)
if(psp->running){
if (psp->worker_thread)
{
slock_lock(psp->cond_lock);
psp->running = false;
slock_unlock(psp->cond_lock);
sthread_join(psp->worker_thread);
}
if (psp->buffer)
fifo_free(psp->buffer);
if (psp->cond)
scond_free(psp->cond);
if (psp->fifo_lock)
@ -158,58 +170,54 @@ static void psp_audio_free(void *data)
if (psp->cond_lock)
slock_free(psp->cond_lock);
}
free(psp->buffer);
psp->worker_thread = NULL;
free(psp->zeroBuffer);
free(psp);
}
static ssize_t psp_audio_write(void *data, const void *buf, size_t size)
{
psp_audio_t* psp = (psp_audio_t*)data;
uint16_t write_pos = psp->write_pos;
uint16_t sampleCount = size / sizeof(uint32_t);
if (!psp->running)
return -1;
if (psp->nonblocking)
{
size_t avail;
size_t write_amt;
if (AUDIO_BUFFER_SIZE - ((uint16_t)
(psp->write_pos - psp->read_pos) & AUDIO_BUFFER_SIZE_MASK) < size)
return 0;
}
slock_lock(psp->fifo_lock);
avail = fifo_write_avail(psp->buffer);
write_amt = MIN(avail, size);
slock_lock(psp->cond_lock);
while (AUDIO_BUFFER_SIZE - ((uint16_t)
(psp->write_pos - psp->read_pos) & AUDIO_BUFFER_SIZE_MASK) < size)
scond_wait(psp->cond, psp->cond_lock);
slock_unlock(psp->cond_lock);
fifo_write(psp->buffer, buf, write_amt);
slock_unlock(psp->fifo_lock);
return write_amt;
slock_lock(psp->fifo_lock);
if((write_pos + sampleCount) > AUDIO_BUFFER_SIZE)
{
memcpy(psp->buffer + write_pos, buf,
(AUDIO_BUFFER_SIZE - write_pos) * sizeof(uint32_t));
memcpy(psp->buffer, (uint32_t*) buf +
(AUDIO_BUFFER_SIZE - write_pos),
(write_pos + sampleCount - AUDIO_BUFFER_SIZE) * sizeof(uint32_t));
}
else
{
size_t written = 0;
while (written < size && psp->running)
{
size_t avail;
slock_lock(psp->fifo_lock);
avail = fifo_write_avail(psp->buffer);
memcpy(psp->buffer + write_pos, buf, size);
if (avail == 0)
{
slock_unlock(psp->fifo_lock);
slock_lock(psp->cond_lock);
if (psp->running)
scond_wait(psp->cond, psp->cond_lock);
slock_unlock(psp->cond_lock);
}
else
{
size_t write_amt = MIN(size - written, avail);
fifo_write(psp->buffer,
(const char*)buf + written, write_amt);
slock_unlock(psp->fifo_lock);
written += write_amt;
}
}
return written;
}
write_pos += sampleCount;
write_pos &= AUDIO_BUFFER_SIZE_MASK;
psp->write_pos = write_pos;
slock_unlock(psp->fifo_lock);
return size;
}
static bool psp_audio_alive(void *data)
@ -274,7 +282,8 @@ static size_t psp_write_avail(void *data)
if (!psp||!psp->running)
return 0;
slock_lock(psp->fifo_lock);
val = fifo_write_avail(psp->buffer);
val = AUDIO_BUFFER_SIZE - ((uint16_t)
(psp->write_pos - psp->read_pos) & AUDIO_BUFFER_SIZE_MASK);
slock_unlock(psp->fifo_lock);
return val;
}