bool Voice_pool_resize(Voice_pool* pool, uint16_t size)
{
assert(pool != NULL);
//assert(size >= 0);
uint16_t new_size = size;
if (new_size == pool->size)
return true;
// Remove excess voices if any
for (uint16_t i = new_size; i < pool->size; ++i)
{
del_Voice(pool->voices[i]);
pool->voices[i] = NULL;
}
if (new_size < pool->size)
pool->size = new_size;
// Handle 0 voices
if (new_size == 0)
{
memory_free(pool->voices);
pool->voices = NULL;
return true;
}
// Resize voice array
Voice** new_voices = memory_realloc_items(Voice*, new_size, pool->voices);
if (new_voices == NULL)
return false;
pool->voices = new_voices;
// Sanitise new fields if any
for (uint16_t i = pool->size; i < new_size; ++i)
pool->voices[i] = NULL;
// Allocate new voices
for (uint16_t i = pool->size; i < new_size; ++i)
{
pool->voices[i] = new_Voice();
if (pool->voices[i] == NULL ||
!Voice_reserve_state_space(pool->voices[i], pool->state_size))
{
for (--i; i >= pool->size; --i)
{
del_Voice(pool->voices[i]);
pool->voices[i] = NULL;
}
return false;
}
}
pool->size = new_size;
return true;
}
Voice* new_Voice(void)
{
Voice* voice = memory_alloc_item(Voice);
if (voice == NULL)
return NULL;
voice->id = 0;
voice->prio = VOICE_PRIO_INACTIVE;
voice->gen = NULL;
voice->state_size = 0;
voice->state = NULL;
voice->state_size = sizeof(Voice_state);
voice->state = memory_alloc_item(Voice_state);
voice->rand_p = new_Random();
voice->rand_s = new_Random();
if (voice->state == NULL || voice->rand_p == NULL ||
voice->rand_s == NULL)
{
del_Voice(voice);
return NULL;
}
Random_set_context(voice->rand_p, "vp");
Random_set_context(voice->rand_s, "vs");
Voice_state_clear(voice->state);
return voice;
}
void del_Voice_pool(Voice_pool* pool)
{
if (pool == NULL)
return;
for (uint16_t i = 0; i < pool->size; ++i)
{
del_Voice(pool->voices[i]);
pool->voices[i] = NULL;
}
memory_free(pool->voices);
memory_free(pool);
return;
}
Voice_pool* new_Voice_pool(uint16_t size)
{
//assert(size >= 0);
Voice_pool* pool = memory_alloc_item(Voice_pool);
if (pool == NULL)
return NULL;
pool->size = size;
pool->state_size = 0;
pool->new_group_id = 0;
pool->voices = NULL;
pool->group_iter_offset = 0;
pool->group_iter = *VOICE_GROUP_AUTO;
if (size > 0)
{
pool->voices = memory_alloc_items(Voice, size);
if (pool->voices == NULL)
{
memory_free(pool);
return NULL;
}
}
for (int i = 0; i < size; ++i)
{
pool->voices[i] = new_Voice();
if (pool->voices[i] == NULL)
{
for (--i; i >= 0; --i)
{
del_Voice(pool->voices[i]);
}
memory_free(pool->voices);
memory_free(pool);
return NULL;
}
}
return pool;
}