#include <emscripten/webaudio.h>

#include <stdio.h>

#include <assert.h>

// This test showcases posting messages (function calls) between the main thread and the Audio Worklet thread

// using the emscripten_audio_worklet_post_function_*() API.

// This event will fire on the main thread.

void MessageReceivedOnMainThread(int d, int e, int f)

{

printf("MessageReceivedOnMainThread: d=%d, e=%d, f=%d\n", d, e, f);

assert(!emscripten_current_thread_is_audio_worklet());

assert(d == 1 && e == 2 && f == 3);

#ifdef REPORT_RESULT

REPORT_RESULT(1); // test succeeded, were able to post a message from main thread to audio thread and back!

#endif

}

// This event will fire on the audio worklet thread.

void MessageReceivedInAudioWorkletThread(int a, int b)

{

printf("MessageReceivedInAudioWorkletThread: a=%d, b=%d\n", a, b);

assert(emscripten_current_thread_is_audio_worklet());

assert(a == 42 && b == 9000);

emscripten_audio_worklet_post_function_viii(EMSCRIPTEN_AUDIO_MAIN_THREAD, MessageReceivedOnMainThread, /*d=*/1, /*e=*/2, /*f=*/3);

}

// This callback will fire when the audio worklet thread has been initialized.

void WebAudioWorkletThreadInitialized(EMSCRIPTEN_WEBAUDIO_T audioContext, EM_BOOL success, void *userData)

{

printf("WebAudioWorkletThreadInitialized\n");

emscripten_audio_worklet_post_function_vii(audioContext, MessageReceivedInAudioWorkletThread, /*a=*/42, /*b=*/9000);

}

uint8_t wasmAudioWorkletStack[4096];

int main()

{

// Create an audio context

EMSCRIPTEN_WEBAUDIO_T context = emscripten_create_audio_context(0 /* use default constructor options */);

// and kick off Audio Worklet scope initialization, which shares the Wasm Module and Memory to the AudioWorklet scope and initializes its stack.

emscripten_start_wasm_audio_worklet_thread_async(context, wasmAudioWorkletStack, sizeof(wasmAudioWorkletStack), WebAudioWorkletThreadInitialized, 0);

}