Esempi in C++ (Cpp) per AudioDriverPulseAudio::start_counting_ticks

Esempio n. 1

File: audio_driver_pulseaudio.cpp Progetto: bigscorpions/godot

void AudioDriverPulseAudio::thread_func(void *p_udata) {

	AudioDriverPulseAudio *ad = (AudioDriverPulseAudio *)p_udata;
	unsigned int write_ofs = 0;
	size_t avail_bytes = 0;

	while (!ad->exit_thread) {

		size_t read_bytes = 0;
		size_t written_bytes = 0;

		if (avail_bytes == 0) {
			ad->lock();
			ad->start_counting_ticks();

			if (!ad->active) {
				for (unsigned int i = 0; i < ad->pa_buffer_size; i++) {
					ad->samples_out.write[i] = 0;
				}
			} else {
				ad->audio_server_process(ad->buffer_frames, ad->samples_in.ptrw());

				if (ad->channels == ad->pa_map.channels) {
					for (unsigned int i = 0; i < ad->pa_buffer_size; i++) {
						ad->samples_out.write[i] = ad->samples_in[i] >> 16;
					}
				} else {
					// Uneven amount of channels
					unsigned int in_idx = 0;
					unsigned int out_idx = 0;

					for (unsigned int i = 0; i < ad->buffer_frames; i++) {
						for (int j = 0; j < ad->pa_map.channels - 1; j++) {
							ad->samples_out.write[out_idx++] = ad->samples_in[in_idx++] >> 16;
						}
						uint32_t l = ad->samples_in[in_idx++] >> 16;
						uint32_t r = ad->samples_in[in_idx++] >> 16;
						ad->samples_out.write[out_idx++] = (l + r) / 2;
					}
				}
			}

			avail_bytes = ad->pa_buffer_size * sizeof(int16_t);
			write_ofs = 0;
			ad->stop_counting_ticks();
			ad->unlock();
		}