opensl_play2.cpp

void Voice::Play(bool loop)
{
	if (!IsReady()) {
		return;
	}
	auto playback = [](SLAndroidSimpleBufferQueueItf q, void* context_) {
		double now = GetTime();
		if (now - systemMisc.GetLastUpdateTime() >= 0.5) {
			return;
		}

		WaveContext* context = (WaveContext*)context_;
		int totalSize;
		const void* buf = RiffFindChunk(context->fileImg, "data", &totalSize);
		int enqueued = context->enqueuedSize;
		if (enqueued >= totalSize) {
			if (!context->loop) {
				return;
			}
			enqueued = 0;
		}
		int toEnqueue = std::min(totalSize - enqueued, 32768);
		enqueued += toEnqueue;
		context->enqueuedSize = enqueued;
		SLCall(q, Enqueue, (char*)buf + enqueued - toEnqueue, toEnqueue);
	};
	SLCall(context->playerPlay, SetPlayState, SL_PLAYSTATE_STOPPED);
	SLCall(context->playerBufferQueue, RegisterCallback, playback, context);
	context->enqueuedSize = 0;
	context->loop = loop;
	SLCall(context->playerPlay, SetPlayState, SL_PLAYSTATE_PLAYING);
	playback(context->playerBufferQueue, context);
}