Playing Back Large Amount of Voices

Samples Directory

/CRIWARE/SDK/pc/samples/criatomex/playback_many_voices

Sample Description

In CRI Atom, a player can play back large amount of Voices.

Maximum number of Voices is passed to the library initialization function criAtomEx_Initialize as max_virtual_voices member of CriAtomExConfig structure.
You set larger values (100 when you want to play back 100 Voices) to this member.

#define SMP_NUM_VOICE   (100)
 
CriAtomExConfig atomex_config;
CriAtomExAcbHn acb_hn;
CriAtomExAdxVoicePoolConfig adxvp_config;
CriAtomExVoicePoolHn voice_pool;
CriAtomExPlayerHn player;
    
    /* Initialize the library setting with default value */
    criAtomEx_SetDefaultConfig(&atomex_config);
    /* Set the number of virtual voices */
    atomex_config.max_virtual_voices = SMP_NUM_VOICE;
    /* Initialize the library */
    criAtomEx_Initialize(&atomex_config, NULL, 0);
    
    /* Read and register ACF file */
    criAtomEx_RegisterAcfFile(NULL, PATH ACF_FILE, NULL, 0);
    /* Load an ACB file and create an ACB handle */
    acb_hn = criAtomExAcb_LoadAcbFile(NULL, PATH ACB_FILE, NULL, PATH AWB_FILE, NULL, 0);
 
    /* Create an ADX Voice Pool */
    criAtomExVoicePool_SetDefaultConfigForAdxVoicePool(&adxvp_config);
    /* Set the number of Voices */
    adxvp_config.num_voices = SMP_NUM_VOICE;
    /* Create Voice Pool */
    voice_pool = criAtomExVoicePool_AllocateAdxVoicePool(&adxvp_config, NULL, 0);
 
    /* Create a player */
    player = criAtomExPlayer_Create(NULL, NULL, 0);
    /* Set Cue ID */
    criAtomExPlayer_SetCueId(player, acb_hn, CRI_ATOMCUESHEET_THUNDER1);
    /* Start playback */
    criAtomExPlayer_Start(player);

When the criAtomExPlayer_Start function is called, sound is played back using Voices one after the other.
When Voices are exhausted, oldest Voice is stopped and is reused.

Since the maximum number of Voices is fixed, it is possible to limit the CPU load within certain range regardless of the content of the data.