static void * api_main_loop(void * itf) {
rh_aout_api_itf self = (rh_aout_api_itf)itf;
struct sles_api_instance * instance = (struct sles_api_instance *)itf;
rh_aout_itf * array;
int len;
for(;;) {
poll_cmd_pipe(self);
process_cmd_pipe(self);
if( bucket_lock( instance->aout_itf_bucket, (void***)&array, &len ) == 0 ) {
int i;
for(i=0; i<len; i++)
(*(array[i]))->update(array[i]);
bucket_unlock( instance->aout_itf_bucket );
}
}
return NULL;
}
static int recv_consumed_buffer_cmd(rh_aout_api_itf self, rh_asmp_itf asmp_itf) {
struct sles_api_instance * api_instance = (struct sles_api_instance *)self;
int len;
rh_aout_itf * array;
int e = 0;
if( bucket_lock( api_instance->aout_itf_bucket, (void***)&array, &len ) == 0 ) {
int i;
for(i=0; i<len; i++) {
rh_asmp_itf audio_sample;
rh_aout_itf audio_channel = array[i];
if( (*audio_channel)->get_sample(audio_channel, &audio_sample) == 0 ) {
if( audio_sample == asmp_itf ) {
struct aout_instance * channel_instance =
(struct aout_instance *)audio_channel;
e = buffer_queue_return_drain_buffer( &channel_instance->bq );
break;
}
}
}
bucket_unlock( api_instance->aout_itf_bucket );
}
return e;
}
static int stop(rh_aout_api_itf self, rh_asmp_itf asmp_itf) {
struct sles_api_instance * api_instance = (struct sles_api_instance *)self;
int len;
rh_aout_itf * array;
int e = 0;
if( bucket_lock( api_instance->aout_itf_bucket, (void***)&array, &len ) == 0 ) {
int i;
for(i=0; i<len; i++) {
rh_asmp_itf audio_sample;
rh_aout_itf audio_channel = array[i];
if( (*audio_channel)->get_sample(audio_channel, &audio_sample) == 0 ) {
if( audio_sample == asmp_itf ) {
e = (*audio_channel)->stop(audio_channel);
(*audio_channel)->set_sample(audio_channel, NULL);
break;
}
}
}
bucket_unlock( api_instance->aout_itf_bucket );
}
return e;
}
/*
* heap_get_bestfit_block --
* extracts a memory block of equal size index
*/
int
heap_get_bestfit_block(PMEMobjpool *pop, struct bucket *b,
struct memory_block *m)
{
if (bucket_lock(b) != 0)
return EAGAIN;
int i;
uint32_t units = m->size_idx;
for (i = 0; i < MAX_BUCKET_REFILL; ++i) {
if (bucket_get_rm_block_bestfit(b, m) != 0)
heap_ensure_bucket_filled(pop, b, 1);
else
break;
}
if (i == MAX_BUCKET_REFILL) {
bucket_unlock(b);
return ENOMEM;
}
if (units != m->size_idx)
heap_recycle_block(pop, b, m, units);
bucket_unlock(b);
return 0;
}
/*
* heap_get_exact_block --
* extracts exactly this memory block and cuts it accordingly
*/
int
heap_get_exact_block(PMEMobjpool *pop, struct bucket *b,
struct memory_block *m, uint32_t units)
{
if (bucket_lock(b) != 0)
return EAGAIN;
if (bucket_get_rm_block_exact(b, *m) != 0)
return ENOMEM;
if (units != m->size_idx)
heap_recycle_block(pop, b, m, units);
bucket_unlock(b);
return 0;
}
static int close_all_channels(rh_aout_api_itf self) {
struct sles_api_instance * api_instance = (struct sles_api_instance *)self;
int len;
rh_aout_itf * array;
if( bucket_lock( api_instance->aout_itf_bucket, (void***)&array, &len ) == 0 ) {
int i;
for(i=0; i<len; i++)
if(array[i])
(*(array[i]))->close(&array[i]);
bucket_unlock( api_instance->aout_itf_bucket );
}
return 0;
}
static int _play(rh_aout_api_itf self, rh_asmp_itf asmp_itf, int loop_flag) {
struct sles_api_instance * api_instance = (struct sles_api_instance *)self;
int len;
rh_aout_itf * array;
int e = 0;
for(;;) {
int found = 0;
if( bucket_lock( api_instance->aout_itf_bucket, (void***)&array, &len ) == 0 ) {
int i;
// is this sample already assigned to a channel? try to find its channel.
for(i=0; i<len; i++) {
rh_asmp_itf audio_sample;
rh_aout_itf audio_channel = array[i];
if( (*audio_channel)->get_sample(audio_channel, &audio_sample) == 0 ) {
if( audio_sample == asmp_itf ) {
found = 1;
if(loop_flag)
e = (*audio_channel)->loop(audio_channel);
else
e = (*audio_channel)->play(audio_channel);
break;
}
}
}
if(!found) {
// sample not yet assigned to a channel, find and empty one and assign it.
for(i=0; i<len; i++) {
rh_asmp_itf audio_sample;
rh_aout_itf audio_channel = array[i];
if( (*audio_channel)->get_sample(audio_channel, &audio_sample) == 0 ) {
if( audio_sample == NULL ) {
found = 1;
(*audio_channel)->set_sample(audio_channel, asmp_itf);
(*audio_channel)->open(
audio_channel,
(*asmp_itf)->channels(asmp_itf),
(*asmp_itf)->samplerate(asmp_itf),
(*asmp_itf)->samplesize(asmp_itf) );
if(loop_flag)
e = (*audio_channel)->loop(audio_channel);
else
e = (*audio_channel)->play(audio_channel);
break;
}
}
}
}
bucket_unlock( api_instance->aout_itf_bucket );
}
if(!found) {
// no empty channels available, create a new channel and try again.
if((e = add_channels(self, 1)) != 0)
break;
}
else
break;
}
return e;
}
/*
* heap_degrade_run_if_empty -- makes a chunk out of an empty run
*/
int
heap_degrade_run_if_empty(PMEMobjpool *pop, struct bucket *b,
struct memory_block m)
{
struct zone *z = &pop->heap->layout->zones[m.zone_id];
struct chunk_header *hdr = &z->chunk_headers[m.chunk_id];
ASSERT(hdr->type == CHUNK_TYPE_RUN);
struct chunk_run *run = (struct chunk_run *)&z->chunks[m.chunk_id];
int err = 0;
if ((err = pthread_mutex_lock(heap_get_run_lock(pop, m))) != 0)
return err;
int i;
for (i = 0; i < bucket_bitmap_nval(b) - 1; ++i)
if (run->bitmap[i] != 0)
goto out;
if (run->bitmap[i] != bucket_bitmap_lastval(b))
goto out;
m.block_off = 0;
m.size_idx = RUN_UNIT_MAX;
uint32_t size_idx_sum = 0;
while (size_idx_sum != bucket_bitmap_nallocs(b)) {
if (bucket_get_rm_block_exact(b, m) != 0) {
ERR("persistent and volatile state mismatched");
ASSERT(0);
}
size_idx_sum += m.size_idx;
m.block_off += RUN_UNIT_MAX;
if (m.block_off + RUN_UNIT_MAX > bucket_bitmap_nallocs(b))
m.size_idx = bucket_bitmap_nallocs(b) - m.block_off;
else
m.size_idx = RUN_UNIT_MAX;
}
struct bucket *defb = pop->heap->buckets[DEFAULT_BUCKET];
if ((err = bucket_lock(defb)) != 0) {
ERR("Failed to lock default bucket");
ASSERT(0);
}
m.block_off = 0;
m.size_idx = 1;
heap_chunk_init(pop, hdr, CHUNK_TYPE_FREE, m.size_idx);
uint64_t *mhdr;
uint64_t op_result;
struct memory_block fm =
heap_free_block(pop, defb, m, &mhdr, &op_result);
VALGRIND_ADD_TO_TX(mhdr, sizeof (*mhdr));
*mhdr = op_result;
VALGRIND_REMOVE_FROM_TX(mhdr, sizeof (*mhdr));
pop->persist(mhdr, sizeof (*mhdr));
if ((err = bucket_insert_block(defb, fm)) != 0) {
ERR("Failed to update heap volatile state");
}
bucket_unlock(defb);
out:
if (pthread_mutex_unlock(heap_get_run_lock(pop, m)) != 0) {
ERR("Failed to release run lock");
ASSERT(0);
}
return err;
}