@@ -5,6 +5,8 @@ * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "AudioDevice.h"
 
+#include "LogController.h"
+
 extern "C" {
 #include "gba/gba.h"
 #include "gba/audio.h"
@@ -24,6 +26,7 @@ }
 
 void AudioDevice::setFormat(const QAudioFormat& format) {
 	if (!m_context || !GBAThreadIsActive(m_context)) {
+		LOG(INFO) << tr("Can't set format of context-less audio device");
 		return;
 	}
 #if RESAMPLE_LIBRARY == RESAMPLE_NN
@@ -49,6 +52,7 @@ maxSize = 0xFFFFFFFF;
 	}
 
 	if (!m_context->gba) {
+		LOG(WARN) << tr("Audio device is missing its GBA");
 		return 0;
 	}
 
@@ -68,5 +72,6 @@ #endif
 }
 
 qint64 AudioDevice::writeData(const char*, qint64) {
+	LOG(WARN) << tr("Writing data to read-only audio device");
 	return 0;
 }

@@ -6,6 +6,7 @@ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "AudioProcessorQt.h"
 
 #include "AudioDevice.h"
+#include "LogController.h"
 
 #include <QAudioOutput>
 
@@ -34,6 +35,7 @@ }
 
 void AudioProcessorQt::start() {
 	if (!input()) {
+		LOG(WARN) << tr("Can't start an audio processor without input");
 		return;
 	}
 

@@ -5,6 +5,8 @@ * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "AudioProcessorSDL.h"
 
+#include "LogController.h"
+
 extern "C" {
 #include "gba/supervisor/thread.h"
 }
@@ -23,6 +25,7 @@ }
 
 void AudioProcessorSDL::start() {
 	if (!input()) {
+		LOG(WARN) << tr("Can't start an audio processor without input");
 		return;
 	}
 

@@ -5,6 +5,7 @@ * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "CheatsModel.h"
 
+#include "LogController.h"
 #include "VFileDevice.h"
 
 #include <QFont>
@@ -203,6 +204,7 @@
 void CheatsModel::loadFile(const QString& path) {
 	VFile* vf = VFileDevice::open(path, O_RDONLY);
 	if (!vf) {
+		LOG(WARN) << tr("Failed to open cheats file: %1").arg(path);
 		return;
 	}
 	beginResetModel();

@@ -8,6 +8,7 @@
 #ifdef USE_MAGICK
 
 #include "GBAApp.h"
+#include "LogController.h"
 
 #include <QMap>
 
@@ -34,6 +35,7 @@ }
 
 void GIFView::startRecording() {
 	if (!ImageMagickGIFEncoderOpen(&m_encoder, m_filename.toUtf8().constData())) {
+		LOG(ERROR) << tr("Failed to open output GIF file: %1").arg(m_filename);
 		return;
 	}
 	m_ui.start->setEnabled(false);

@@ -224,6 +224,7 @@ closeGame();
 	if (!dirmode) {
 		QFile file(path);
 		if (!file.open(QIODevice::ReadOnly)) {
+			postLog(GBA_LOG_ERROR, tr("Failed to open game file: %1").arg(path));
 			return;
 		}
 		file.close();
@@ -338,6 +339,7 @@ return;
 	}
 	VFile* vf = VFileDevice::open(path, O_RDONLY);
 	if (!vf) {
+		postLog(GBA_LOG_ERROR, tr("Failed to open snapshot file for reading: %1").arg(path));
 		return;
 	}
 	threadInterrupt();
@@ -352,6 +354,7 @@ return;
 	}
 	VFile* vf = VFileDevice::open(path, O_WRONLY | O_CREAT | O_TRUNC);
 	if (!vf) {
+		postLog(GBA_LOG_ERROR, tr("Failed to open snapshot file for writing: %1").arg(path));
 		return;
 	}
 	threadInterrupt();

@@ -7,10 +7,22 @@ #include "LogController.h"
 
 using namespace QGBA;
 
+LogController LogController::s_global(GBA_LOG_ALL);
+
 LogController::LogController(int levels, QObject* parent)
 	: QObject(parent)
 	, m_logLevel(levels)
 {
+	if (this != &s_global) {
+		connect(&s_global, SIGNAL(logPosted(int, const QString&)), this, SLOT(postLog(int, const QString&)));
+		connect(this, SIGNAL(levelsSet(int)), &s_global, SLOT(setLevels(int)));
+		connect(this, SIGNAL(levelsEnabled(int)), &s_global, SLOT(enableLevels(int)));
+		connect(this, SIGNAL(levelsDisabled(int)), &s_global, SLOT(disableLevels(int)));
+	}
+}
+
+LogController::Stream LogController::operator()(int level) {
+	return Stream(this, level);
 }
 
 void LogController::postLog(int level, const QString& string) {
@@ -33,6 +45,10 @@
 void LogController::disableLevels(int levels) {
 	m_logLevel &= ~levels;
 	emit levelsDisabled(levels);
+}
+
+LogController* LogController::global() {
+	return &s_global;
 }
 
 QString LogController::toString(int level) {

@@ -40,6 +40,7 @@ int levels() const { return m_logLevel; }
 
 	Stream operator()(int level);
 
+	static LogController* global();
 	static QString toString(int level);
 
 signals:
@@ -56,7 +57,11 @@ void disableLevels(int levels);
 
 private:
 	int m_logLevel;
+
+	static LogController s_global;
 };
+
+#define LOG(L) (*LogController::global())(GBA_LOG_ ## L)
 
 }
 

@@ -7,6 +7,7 @@ #include "MemoryModel.h"
 
 #include "GBAApp.h"
 #include "GameController.h"
+#include "LogController.h"
 
 #include <QAction>
 #include <QApplication>
@@ -153,7 +154,7 @@ return;
 	}
 	QFile outfile(filename);
 	if (!outfile.open(QIODevice::WriteOnly | QIODevice::Truncate)) {
-		// TODO: Log
+		LOG(WARN) << tr("Failed to open output file: %1").arg(filename);
 		return;
 	}
 	QDataStream stream(&outfile);

@@ -6,6 +6,7 @@ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "PaletteView.h"
 
 #include "GBAApp.h"
+#include "LogController.h"
 #include "VFileDevice.h"
 
 #include <QFileDialog>
@@ -93,6 +94,7 @@ }
 	QString filename = dialog->selectedFiles()[0];
 	VFile* vf = VFileDevice::open(filename, O_WRONLY | O_CREAT | O_TRUNC);
 	if (!vf) {
+		LOG(ERROR) << tr("Failed to open output palette file: %1").arg(filename);
 		m_controller->threadContinue();
 		return;
 	}

@@ -8,6 +8,7 @@
 #ifdef USE_FFMPEG
 
 #include "GBAApp.h"
+#include "LogController.h"
 
 #include <QMap>
 
@@ -198,6 +199,7 @@ if (!validateSettings()) {
 		return;
 	}
 	if (!FFmpegEncoderOpen(&m_encoder, m_filename.toUtf8().constData())) {
+		LOG(ERROR) << tr("Failed to open output video file: %1").arg(m_filename);
 		return;
 	}
 	m_ui.start->setEnabled(false);