fs2open.github.com/code/cutscene/Decoder.cpp

#include "cutscene/Decoder.h"

#include <memory>

namespace cutscene {
Decoder::Decoder() : m_decoding(true) {
}

Decoder::~Decoder() {
}

bool Decoder::tryPopAudioData(AudioFramePtr& out) {
	auto res = m_audioQueue->try_pull_front(out);
	return res == queue_op_status::success;
}

bool Decoder::tryPopSubtitleData(SubtitleFramePtr& out) {
	auto res = m_subtitleQueue->try_pull_front(out);
	return res == queue_op_status::success;
}

bool Decoder::tryPopVideoFrame(VideoFramePtr& out) {
	auto res = m_videoQueue->try_pull_front(out);
	return res == queue_op_status::success;
}

void Decoder::initializeQueues(size_t queueSize) {
	m_queueSize = queueSize;

	m_videoQueue.reset(new sync_bounded_queue<VideoFramePtr>(m_queueSize));
	m_audioQueue.reset(new sync_bounded_queue<AudioFramePtr>(m_queueSize));
	m_subtitleQueue.reset(new sync_bounded_queue<SubtitleFramePtr>(m_queueSize));
}

void Decoder::stopDecoder() {
	m_decoding = false;

	m_videoQueue->close();
	m_audioQueue->close();
	m_subtitleQueue->close();
}

bool Decoder::canPushAudioData() {
	return !isAudioQueueFull();
}

void Decoder::pushAudioData(AudioFramePtr&& data) {
	Assertion(data, "Invalid audio data passed!");

	try {
		m_audioQueue->push_back(std::move(data));
	}
	catch (sync_queue_is_closed&) {
		// Ignore
	}
}

bool Decoder::canPushSubtitleData() {
	return !isSubtitleQueueFull();
}
void Decoder::pushSubtitleData(SubtitleFramePtr&& data) {
	Assertion(data, "Invalid audio data passed!");

	try {
		m_subtitleQueue->push_back(std::move(data));
	}
	catch (sync_queue_is_closed&) {
		// Ignore
	}
}

bool Decoder::canPushVideoData() {
	return !isVideoQueueFull();
}

void Decoder::pushFrameData(VideoFramePtr&& frame) {
	Assertion(frame, "Invalid video data passed!");

	try {
		m_videoQueue->push_back(std::move(frame));
	}
	catch (sync_queue_is_closed&) {
		// Ignore
	}
}
}