1/* Copyright (c) 2013-2018 Jeffrey Pfau
  2 *
  3 * This Source Code Form is subject to the terms of the Mozilla Public
  4 * License, v. 2.0. If a copy of the MPL was not distributed with this
  5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
  6#include "VideoProxy.h"
  7
  8#include "CoreController.h"
  9
 10#include <QThread>
 11
 12using namespace QGBA;
 13
 14VideoProxy::VideoProxy() {
 15	mVideoLoggerRendererCreate(&m_logger.d, false);
 16	m_logger.d.block = true;
 17	m_logger.d.waitOnFlush = false;
 18
 19	m_logger.d.init = &cbind<&VideoProxy::init>;
 20	m_logger.d.reset = &cbind<&VideoProxy::reset>;
 21	m_logger.d.deinit = &cbind<&VideoProxy::deinit>;
 22	m_logger.d.lock = &cbind<&VideoProxy::lock>;
 23	m_logger.d.unlock = &cbind<&VideoProxy::unlock>;
 24	m_logger.d.wait = &cbind<&VideoProxy::wait>;
 25	m_logger.d.wake = &callback<void, int>::func<&VideoProxy::wake>;
 26
 27	m_logger.d.writeData = &callback<bool, const void*, size_t>::func<&VideoProxy::writeData>;
 28	m_logger.d.readData = &callback<bool, void*, size_t, bool>::func<&VideoProxy::readData>;
 29	m_logger.d.postEvent = &callback<void, enum mVideoLoggerEvent>::func<&VideoProxy::postEvent>;
 30
 31	connect(this, &VideoProxy::dataAvailable, this, &VideoProxy::processData);
 32}
 33
 34void VideoProxy::attach(CoreController* controller) {
 35	CoreController::Interrupter interrupter(controller);
 36	controller->thread()->core->videoLogger = &m_logger.d;
 37}
 38
 39void VideoProxy::detach(CoreController* controller) {
 40	CoreController::Interrupter interrupter(controller);
 41	if (controller->thread()->core->videoLogger == &m_logger.d) {
 42		controller->thread()->core->videoLogger = nullptr;
 43	}
 44}
 45
 46void VideoProxy::processData() {
 47	mVideoLoggerRendererRun(&m_logger.d, false);
 48	m_fromThreadCond.wakeAll();
 49}
 50
 51void VideoProxy::init() {
 52	RingFIFOInit(&m_dirtyQueue, 0x80000);
 53}
 54
 55void VideoProxy::reset() {
 56	m_mutex.lock();
 57	RingFIFOClear(&m_dirtyQueue);
 58	m_toThreadCond.wakeAll();
 59	m_mutex.unlock();
 60}
 61
 62void VideoProxy::deinit() {
 63	RingFIFODeinit(&m_dirtyQueue);
 64}
 65
 66bool VideoProxy::writeData(const void* data, size_t length) {
 67	while (!RingFIFOWrite(&m_dirtyQueue, data, length)) {
 68		if (QThread::currentThread() == thread()) {
 69			// We're on the main thread
 70			mVideoLoggerRendererRun(&m_logger.d, false);
 71		} else {
 72			emit dataAvailable();
 73			m_mutex.lock();
 74			m_toThreadCond.wakeAll();
 75			m_fromThreadCond.wait(&m_mutex);
 76			m_mutex.unlock();
 77		}
 78	}
 79	return true;
 80}
 81
 82bool VideoProxy::readData(void* data, size_t length, bool block) {
 83	bool read = false;
 84	while (true) {
 85		read = RingFIFORead(&m_dirtyQueue, data, length);
 86		if (!block || read) {
 87			break;
 88		}
 89		m_mutex.lock();
 90		m_fromThreadCond.wakeAll();
 91		m_toThreadCond.wait(&m_mutex);
 92		m_mutex.unlock();
 93	}
 94	return read;
 95}
 96
 97void VideoProxy::postEvent(enum mVideoLoggerEvent event) {
 98	if (QThread::currentThread() == thread()) {
 99		// We're on the main thread
100		handleEvent(event);
101	} else {
102		QMetaObject::invokeMethod(this, "handleEvent", Qt::BlockingQueuedConnection, Q_ARG(int, event));
103	}
104}
105
106void VideoProxy::handleEvent(int event) {
107	m_mutex.lock();
108	m_logger.d.handleEvent(&m_logger.d, static_cast<enum mVideoLoggerEvent>(event));
109	m_mutex.unlock();
110}
111
112void VideoProxy::lock() {
113	m_mutex.lock();
114}
115
116void VideoProxy::unlock() {
117	m_mutex.unlock();
118}
119
120void VideoProxy::wait() {
121	m_mutex.lock();
122	while (RingFIFOSize(&m_dirtyQueue)) {
123		if (QThread::currentThread() == thread()) {
124			// We're on the main thread
125			mVideoLoggerRendererRun(&m_logger.d, false);
126		} else {
127			emit dataAvailable();
128			m_toThreadCond.wakeAll();
129			m_fromThreadCond.wait(&m_mutex, 1);
130		}
131	}
132	m_mutex.unlock();
133}
134
135void VideoProxy::wake(int y) {
136	if ((y & 15) == 15) {
137		emit dataAvailable();
138		m_toThreadCond.wakeAll();
139	}
140}