SDL: Add Pandora-specific main file

src/platform/sdl/CMakeLists.txt

@@ -53,7 +53,9 @@ if(BUILD_RASPI)
 	install(TARGETS ${BINARY_NAME}-rpi DESTINATION bin COMPONENT ${BINARY_NAME}-rpi)
 endif()
 
-if(BUILD_BBB OR BUILD_RASPI OR NOT BUILD_GL)
+if(BUILD_PANDORA)
+	list(APPEND MAIN_SRC ${CMAKE_SOURCE_DIR}/src/platform/sdl/pandora-sdl.c)
+elseif(BUILD_BBB OR BUILD_RASPI OR NOT BUILD_GL)
 	list(APPEND MAIN_SRC ${CMAKE_SOURCE_DIR}/src/platform/sdl/sw-sdl.c)
 else()
 	list(APPEND MAIN_SRC ${CMAKE_SOURCE_DIR}/src/platform/sdl/gl-sdl.c)

src/platform/sdl/main.h

@@ -77,6 +77,12 @@ struct SDLSoftwareRenderer {
 	GLuint texLocation;
 	GLuint positionLocation;
 #endif
+
+#ifdef BUILD_PANDORA
+	int fb;
+	int odd;
+	void* base[2];
+#endif
 };
 
 bool GBASDLInit(struct SDLSoftwareRenderer* renderer);

src/platform/sdl/pandora-sdl.c

@@ -0,0 +1,109 @@
+/* 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 "main.h"
+
+#include "gba/supervisor/thread.h"
+
+#include <linux/omapfb.h>
+#include <linux/fb.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+
+bool GBASDLInit(struct SDLSoftwareRenderer* renderer) {
+	SDL_SetVideoMode(800, 480, 16, SDL_FULLSCREEN);
+
+	renderer->odd = 0;
+	renderer->fb = open("/dev/fb1", O_RDWR);
+	if (renderer->fb < 0) {
+		return false;
+	}
+
+	struct omapfb_plane_info plane;
+	struct omapfb_mem_info mem;
+	if (ioctl(renderer->fb, OMAPFB_QUERY_PLANE, &plane) < 0) {
+		return false;
+	}
+	if (ioctl(renderer->fb, OMAPFB_QUERY_MEM, &mem) < 0) {
+		return false;
+	}
+
+	if (plane.enabled) {
+		plane.enabled = 0;
+		ioctl(renderer->fb, OMAPFB_SETUP_PLANE, &plane);
+	}
+
+	mem.size = VIDEO_HORIZONTAL_PIXELS * VIDEO_VERTICAL_PIXELS * 4;
+	ioctl(renderer->fb, OMAPFB_SETUP_MEM, &mem);
+
+	plane.enabled = 1;
+	plane.pos_x = 40;
+	plane.pos_y = 0;
+	plane.out_width = 720;
+	plane.out_height = 480;
+	ioctl(renderer->fb, OMAPFB_SETUP_PLANE, &plane);
+
+	struct fb_var_screeninfo info;
+	ioctl(renderer->fb, FBIOGET_VSCREENINFO, &info);
+	info.xres = VIDEO_HORIZONTAL_PIXELS;
+	info.yres = VIDEO_VERTICAL_PIXELS;
+	info.xres_virtual = VIDEO_HORIZONTAL_PIXELS;
+	info.yres_virtual = VIDEO_VERTICAL_PIXELS * 2;
+	info.bits_per_pixel = 16;
+	ioctl(renderer->fb, FBIOPUT_VSCREENINFO, &info);
+
+	renderer->odd = 0;
+	renderer->base[0] = mmap(0, VIDEO_HORIZONTAL_PIXELS * VIDEO_VERTICAL_PIXELS * 4, PROT_READ | PROT_WRITE, MAP_SHARED, renderer->fb, 0);
+	renderer->base[1] = (uint16_t*) renderer->base[0] + VIDEO_HORIZONTAL_PIXELS * VIDEO_VERTICAL_PIXELS;
+
+	renderer->d.outputBuffer = renderer->base[0];
+	renderer->d.outputBufferStride = VIDEO_HORIZONTAL_PIXELS;
+	return true;
+}
+
+void GBASDLRunloop(struct GBAThread* context, struct SDLSoftwareRenderer* renderer) {
+	SDL_Event event;
+
+	while (context->state < THREAD_EXITING) {
+		while (SDL_PollEvent(&event)) {
+			GBASDLHandleEvent(context, &renderer->events, &event);
+		}
+
+		if (GBASyncWaitFrameStart(&context->sync, context->frameskip)) {
+			int arg = 0;
+			ioctl(renderer->fb, FBIO_WAITFORVSYNC, &arg);
+
+			struct fb_var_screeninfo info;
+			ioctl(renderer->fb, FBIOGET_VSCREENINFO, &info);
+			info.yoffset = VIDEO_VERTICAL_PIXELS * renderer->odd;
+			ioctl(renderer->fb, FBIOPAN_DISPLAY, &info);
+
+			renderer->odd = !renderer->odd;
+			renderer->d.outputBuffer = renderer->base[renderer->odd];
+		}
+		GBASyncWaitFrameEnd(&context->sync);
+	}
+}
+
+void GBASDLDeinit(struct SDLSoftwareRenderer* renderer) {
+	munmap(renderer->base[0], VIDEO_HORIZONTAL_PIXELS * VIDEO_VERTICAL_PIXELS * 4);
+
+	struct omapfb_plane_info plane;
+	struct omapfb_mem_info mem;
+	ioctl(renderer->fb, OMAPFB_QUERY_PLANE, &plane);
+	ioctl(renderer->fb, OMAPFB_QUERY_MEM, &mem);
+
+	mem.size = 0;
+	ioctl(renderer->fb, OMAPFB_SETUP_MEM, &mem);
+
+	plane.enabled = 0;
+	plane.pos_x = 0;
+	plane.pos_y = 0;
+	plane.out_width = 0;
+	plane.out_height = 0;
+	ioctl(renderer->fb, OMAPFB_SETUP_PLANE, &plane);
+
+	close(renderer->fb);
+}