GBA: Palette RIFF exporter

CHANGES

@@ -2,7 +2,7 @@
 Features:
  - Ability to hide individual background layers, or OBJs
  - Ability to mute individual audio channels
- - Palette viewer
+ - Palette viewer and exporter
  - Volume control
  - More shortcuts are editable (e.g. quick save/load)
  - Rewind now shows the frame after rewinding

src/gba/supervisor/export.c

@@ -0,0 +1,57 @@
+/* Copyright (c) 2013-2015 Jeffrey Pfau
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * 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 "export.h"
+
+#include "gba/video.h"
+#include "util/vfs.h"
+
+bool GBAExportPaletteRIFF(struct VFile* vf, size_t entries, const uint16_t* colors) {
+	if (entries > 0xFFFF) {
+		return false;
+	}
+	uint32_t chunkSize = 4 + 4 * entries;
+	uint32_t size = chunkSize + 12;
+
+	// Header
+	if (vf->write(vf, "RIFF", 4) < 4) {
+		return false;
+	}
+	if (VFileWrite32LE(vf, size) < 4) {
+		return false;
+	}
+	if (vf->write(vf, "PAL ", 4) < 4) {
+		return false;
+	}
+
+	// Data chunk
+	if (vf->write(vf, "data", 4) < 4) {
+		return false;
+	}
+	if (VFileWrite32LE(vf, chunkSize) < 4) {
+		return false;
+	}
+	if (VFileWrite16LE(vf, 0x0300) < 2) {
+		return false;
+	}
+	if (VFileWrite16LE(vf, entries) < 2) {
+		return false;
+	}
+
+	size_t i;
+	for (i = 0; i < entries; ++i) {
+		uint8_t block[4] = {
+			GBA_R8(colors[i]),
+			GBA_G8(colors[i]),
+			GBA_B8(colors[i]),
+			0
+		};
+		if (vf->write(vf, block, 4) < 4) {
+			return false;
+		}
+	}
+
+	return true;
+}

src/gba/supervisor/export.h

@@ -0,0 +1,15 @@
+/* Copyright (c) 2013-2015 Jeffrey Pfau
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * 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/. */
+#ifndef GBA_EXPORT_H
+#define GBA_EXPORT_H
+
+#include "util/common.h"
+
+struct VFile;
+
+bool GBAExportPaletteRIFF(struct VFile* vf, size_t entries, const uint16_t* colors);
+
+#endif

src/platform/qt/PaletteView.cpp

@@ -5,8 +5,14 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "PaletteView.h"
 
+#include <QFileDialog>
 #include <QFontDatabase>
 
+extern "C" {
+#include "gba/supervisor/export.h"
+#include "util/vfs.h"
+}
+
 using namespace QGBA;
 
 PaletteView::PaletteView(GameController* controller, QWidget* parent)
@@ -33,6 +39,8 @@ PaletteView::PaletteView(GameController* controller, QWidget* parent)
 
 	connect(m_ui.bgGrid, SIGNAL(indexPressed(int)), this, SLOT(selectIndex(int)));
 	connect(m_ui.objGrid, &Swatch::indexPressed, [this] (int index) { selectIndex(index + 256); });
+	connect(m_ui.exportBG, &QAbstractButton::clicked, [this] () { exportPalette(0, 256); });
+	connect(m_ui.exportOBJ, &QAbstractButton::clicked, [this] () { exportPalette(256, 256); });
 
 	connect(controller, SIGNAL(gameStopped(GBAThread*)), this, SLOT(close()));
 }
@@ -64,3 +72,26 @@ void PaletteView::selectIndex(int index) {
 	m_ui.g->setText(tr("0x%0 (%1)").arg(g, 2, 16, QChar('0')).arg(g, 2, 10, QChar('0')));
 	m_ui.b->setText(tr("0x%0 (%1)").arg(b, 2, 16, QChar('0')).arg(b, 2, 10, QChar('0')));
 }
+
+void PaletteView::exportPalette(int start, int length) {
+	if (start >= 512) {
+		return;
+	}
+	if (start + length > 512) {
+		length = 512 - start;
+	}
+	m_controller->threadInterrupt();
+	QString filename = QFileDialog::getSaveFileName(this, tr("Export palette"), QString(), tr("Windows PAL (*.pal)"));
+	if (filename.isNull()) {
+		m_controller->threadContinue();
+		return;
+	}
+	VFile* vf = VFileOpen(filename.toLocal8Bit().constData(), O_WRONLY | O_CREAT | O_TRUNC);
+	if (!vf) {
+		m_controller->threadContinue();
+		return;
+	}
+	GBAExportPaletteRIFF(vf, length, &m_controller->thread()->gba->video.palette[start]);
+	vf->close(vf);
+	m_controller->threadContinue();
+}

src/platform/qt/PaletteView.h

@@ -32,6 +32,8 @@ private slots:
 	void selectIndex(int);
 
 private:
+	void exportPalette(int start, int length);
+
 	Ui::PaletteView m_ui;
 
 	GameController* m_controller;

src/platform/qt/PaletteView.ui

@@ -6,8 +6,8 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>452</width>
+    <width>440</width>
-    <height>349</height>
+    <height>397</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -292,6 +292,63 @@
      </layout>
     </widget>
    </item>
+   <item>
+    <layout class="QHBoxLayout" name="horizontalLayout_3">
+     <item>
+      <spacer name="horizontalSpacer_4">
+       <property name="orientation">
+        <enum>Qt::Horizontal</enum>
+       </property>
+       <property name="sizeHint" stdset="0">
+        <size>
+         <width>20</width>
+         <height>0</height>
+        </size>
+       </property>
+      </spacer>
+     </item>
+     <item>
+      <widget class="QPushButton" name="exportBG">
+       <property name="text">
+        <string>Export BG</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <spacer name="horizontalSpacer_5">
+       <property name="orientation">
+        <enum>Qt::Horizontal</enum>
+       </property>
+       <property name="sizeHint" stdset="0">
+        <size>
+         <width>40</width>
+         <height>0</height>
+        </size>
+       </property>
+      </spacer>
+     </item>
+     <item>
+      <widget class="QPushButton" name="exportOBJ">
+       <property name="text">
+        <string>Export OBJ</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <spacer name="horizontalSpacer_6">
+       <property name="orientation">
+        <enum>Qt::Horizontal</enum>
+       </property>
+       <property name="sizeHint" stdset="0">
+        <size>
+         <width>20</width>
+         <height>0</height>
+        </size>
+       </property>
+      </spacer>
+     </item>
+    </layout>
+   </item>
   </layout>
  </widget>
  <customwidgets>