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Update RSound to use callback locks.

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This commit is contained in:
Themaister 2011-02-08 17:50:38 +01:00
parent 2137ca8e3f
commit 81e8368099
1 changed files with 5 additions and 15 deletions
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20
audio/rsound.c
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@ -31,7 +31,6 @@ typedef struct rsd
rsound_fifo_buffer_t *buffer;
SDL_mutex *lock;
SDL_mutex *cond_lock;
SDL_cond *cond;
} rsd_t;
@ -40,11 +39,9 @@ static ssize_t audio_cb(void *data, size_t bytes, void *userdata)
{
rsd_t *rsd = userdata;
SDL_mutexP(rsd->lock);
size_t avail = rsnd_fifo_read_avail(rsd->buffer);
size_t write_size = bytes > avail ? avail : bytes;
rsnd_fifo_read(rsd->buffer, data, write_size);
SDL_mutexV(rsd->lock);
SDL_CondSignal(rsd->cond);
return write_size;
@ -71,7 +68,6 @@ static void* __rsd_init(const char* device, int rate, int latency)
return NULL;
}
rsd->lock = SDL_CreateMutex();
rsd->cond_lock = SDL_CreateMutex();
rsd->cond = SDL_CreateCond();
@ -111,11 +107,11 @@ static ssize_t __rsd_write(void* data, const void* buf, size_t size)
if (rsd->nonblock)
{
SDL_mutexP(rsd->lock);
rsd_callback_lock(rsd->rd);
size_t avail = rsnd_fifo_write_avail(rsd->buffer);
size_t write_amt = avail > size ? size : avail;
rsnd_fifo_write(rsd->buffer, buf, write_amt);
SDL_mutexV(rsd->lock);
rsd_callback_unlock(rsd->rd);
return write_amt;
}
else
@ -123,12 +119,12 @@ static ssize_t __rsd_write(void* data, const void* buf, size_t size)
size_t written = 0;
while (written < size && !rsd->has_error)
{
SDL_mutexP(rsd->lock);
rsd_callback_lock(rsd->rd);
size_t avail = rsnd_fifo_write_avail(rsd->buffer);
if (avail == 0)
{
SDL_mutexV(rsd->lock);
rsd_callback_unlock(rsd->rd);
if (!rsd->has_error)
{
SDL_mutexP(rsd->cond_lock);
@ -140,7 +136,7 @@ static ssize_t __rsd_write(void* data, const void* buf, size_t size)
{
size_t write_amt = size - written > avail ? avail : size - written;
rsnd_fifo_write(rsd->buffer, (const char*)buf + written, write_amt);
SDL_mutexV(rsd->lock);
rsd_callback_unlock(rsd->rd);
written += write_amt;
}
}
@ -179,7 +175,6 @@ static void __rsd_free(void *data)
rsd_free(rsd->rd);
rsnd_fifo_free(rsd->buffer);
SDL_DestroyMutex(rsd->lock);
SDL_DestroyMutex(rsd->cond_lock);
SDL_DestroyCond(rsd->cond);
@ -195,9 +190,4 @@ const audio_driver_t audio_rsound = {
.free = __rsd_free,
.ident = "rsound"
};