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// -- internal --
// public
#include "rodeo/audio.h"
#include "rodeo/log.h"
// private
#include "audio/rodeo_audio_t.h"
// -- external --
#include "SDL.h"
#include "SDL_mixer.h"
static uint32_t **irodeo_audio_channelPool;
static uint32_t irodeo_audio_channelPool_num;
static uint32_t irodeo_audio_channelPool_size;
void
rodeo_audio_initialize(uint32_t num_sound_pools, uint32_t size_sound_pools)
{
if(Mix_OpenAudio(44100, MIX_DEFAULT_FORMAT, 2, 2048) < 0)
{
rodeo_log(
rodeo_logLevel_error,
"Failed to initialize SDL Audio. SDL_Error: %s",
SDL_GetError()
);
}
else
{
irodeo_audio_channelPool_num = num_sound_pools;
irodeo_audio_channelPool_size = size_sound_pools;
void *mem_alloc =
malloc(
((irodeo_audio_channelPool_num) * sizeof(intptr_t)) +
((irodeo_audio_channelPool_num * irodeo_audio_channelPool_size) * sizeof(uint32_t)
));
irodeo_audio_channelPool = mem_alloc;
uint32_t *channelPool = (uint32_t*)(irodeo_audio_channelPool + ((irodeo_audio_channelPool_num) * sizeof(intptr_t)));
{
int32_t allocated_channels =
Mix_AllocateChannels((
int32_t)irodeo_audio_channelPool_num * (int32_t)irodeo_audio_channelPool_size
);
rodeo_log(
rodeo_logLevel_info,
"Number of channels opened: %d",
allocated_channels
);
}
uint32_t temp_channel_id = 0;
for(uint32_t i = 0; i < irodeo_audio_channelPool_num; ++i)
{
irodeo_audio_channelPool[i] =
channelPool + (i * sizeof(uint32_t));
for(uint32_t j = 0; j < irodeo_audio_channelPool_size; ++j)
{
irodeo_audio_channelPool[i][j] = temp_channel_id;
temp_channel_id += 1;
}
int32_t assigning_tag_status = Mix_GroupChannel(
(int32_t)temp_channel_id,
(int32_t)i
);
if(0 == assigning_tag_status)
{
rodeo_log(
rodeo_logLevel_error,
"Failed to assign tag to sound channel. Mix_Error: %s",
Mix_GetError()
);
}
}
// Lets not explode player's ears, yea?
rodeo_audio_masterVolume_set(0.5f);
}
}
void
rodeo_audio_deinitialize(void)
{
free(irodeo_audio_channelPool);
Mix_Quit();
}
uint32_t
irodeo_audio_channelPool_num_get(void)
{
return irodeo_audio_channelPool_num;
}
uint32_t
irodeo_audio_channelPool_size_get(void)
{
return irodeo_audio_channelPool_size;
}
void
rodeo_audio_masterVolume_set(float volume_level)
{
Mix_MasterVolume((int32_t)(volume_level * (float)MIX_MAX_VOLUME));
Mix_VolumeMusic((int32_t)(volume_level * (float)MIX_MAX_VOLUME));
}
float
rodeo_audio_masterVolume_get(void)
{
return ((float)Mix_MasterVolume(-1)) / (float)MIX_MAX_VOLUME;
}
void
rodeo_audio_channelPool_volume_set(uint32_t channel_pool_id, float volume_level)
{
for(uint32_t i = 0; i < irodeo_audio_channelPool_size; i += 1)
{
Mix_Volume((int32_t)irodeo_audio_channelPool[channel_pool_id][i], (int32_t)(volume_level * (float)MIX_MAX_VOLUME));
}
}
float
rodeo_audio_channelPool_volume_get(uint32_t channel_pool_id)
{
return ((float)Mix_Volume((int32_t)channel_pool_id, -1) /
(float)MIX_MAX_VOLUME);
}
rodeo_audio_sound_t*
rodeo_audio_sound_create_from_path(cstr path)
{
rodeo_audio_sound_t *sample_sound = malloc(sizeof(rodeo_audio_sound_t));
sample_sound->sdl_sound = Mix_LoadWAV(cstr_str(&path));
if(NULL == sample_sound->sdl_sound)
{
rodeo_log(
rodeo_logLevel_error,
"Failed to load sound. Mix_Error: %s",
Mix_GetError()
);
}
return sample_sound;
}
void
rodeo_audio_sound_destroy(rodeo_audio_sound_t* sound)
{
Mix_FreeChunk(sound->sdl_sound);
free(sound);
}
void
rodeo_audio_sound_play(rodeo_audio_sound_t *sound, uint32_t channel_pool_id)
{
Mix_PlayChannel((int32_t)channel_pool_id, sound->sdl_sound, 0);
}
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