Block playback

Sample directory

/cri/pc/samples/criatomex/playback_block

Data used in the sample

/cri/common/smpdata/criatomex/

• SampleProject.acf
• AtomCueSheet.acb
• AtomCueSheet.awb
  

Sample description

This is a sample program that branches the jingle sound, which is a block cue, during playback.

Block queues are created with CRI Atom Craft.
See here for details → Block playback

On the program side,
the first block index is specified to the player with the criAtomExPlayer_SetFirstBlockIndex function,
and the second and subsequent block indexes are specified to the playback ID with the criAtomExPlayback_SetNextBlockIndex function.

The code to play and control a block queue with a branch in the middle is shown below.

/* Create the player */
player = criAtomExPlayer_Create(NULL, NULL, 0);
 
/* Set the block Cue */
player = criAtomExPlayer_SetCueName(acb, "block");
 
/* Select the first block */
criAtomExPlayer_SetFirstBlockIndex(app_obj->player, 0);
 
/* Start playback */
CriAtomExPlaybackId playback_id;
playback_id = criAtomExPlayer_Start(player);
    :
/* Specify the next block */
if (status_of_something) {
    criAtomExPlayback_SetNextBlockIndex(playback_id, 1);
} else {
    criAtomExPlayback_SetNextBlockIndex(playback_id, 2);
}

You can also receive a callback when blocks switch by using the criAtomExPlayer_SetBlockTransitionCallback function, as in the code below.

void main()
{
    /* Register transition callback */
    criAtomExPlayer_SetBlockTransitionCallback(
        app_obj->player, &user_transition_callback_func, app_obj);
}
 
void user_transition_callback_func(
    void *obj, CriAtomExPlaybackId id, CriAtomExBlockIndex index)
{
    printf("PlaybackId:%d, BlockIndex:%d\n", id, index);
}