1#ifdef USE_CLI_DEBUGGER
  2#include "debugger/cli-debugger.h"
  3#endif
  4
  5#ifdef USE_GDB_STUB
  6#include "debugger/gdb-stub.h"
  7#endif
  8
  9#include "gba-thread.h"
 10#include "gba.h"
 11#include "gba-config.h"
 12#include "sdl-audio.h"
 13#include "sdl-events.h"
 14#include "renderers/video-software.h"
 15#include "platform/commandline.h"
 16#include "util/configuration.h"
 17
 18#include <SDL.h>
 19#ifdef __APPLE__
 20#include <OpenGL/gl.h>
 21#else
 22#include <GL/gl.h>
 23#endif
 24
 25#include <errno.h>
 26#include <signal.h>
 27#include <sys/time.h>
 28
 29#define PORT "sdl-gl"
 30
 31struct GLSoftwareRenderer {
 32	struct GBAVideoSoftwareRenderer d;
 33	struct GBASDLAudio audio;
 34	struct GBASDLEvents events;
 35#if SDL_VERSION_ATLEAST(2, 0, 0)
 36	SDL_Window* window;
 37#endif
 38
 39	int viewportWidth;
 40	int viewportHeight;
 41	GLuint tex;
 42};
 43
 44static int _GBASDLInit(struct GLSoftwareRenderer* renderer);
 45static void _GBASDLDeinit(struct GLSoftwareRenderer* renderer);
 46static void _GBASDLRunloop(struct GBAThread* context, struct GLSoftwareRenderer* renderer);
 47static void _GBASDLStart(struct GBAThread* context);
 48static void _GBASDLClean(struct GBAThread* context);
 49
 50static const GLint _glVertices[] = {
 51	0, 0,
 52	256, 0,
 53	256, 256,
 54	0, 256
 55};
 56
 57static const GLint _glTexCoords[] = {
 58	0, 0,
 59	1, 0,
 60	1, 1,
 61	0, 1
 62};
 63
 64int main(int argc, char** argv) {
 65	struct GLSoftwareRenderer renderer;
 66	GBAVideoSoftwareRendererCreate(&renderer.d);
 67
 68	struct Configuration config;
 69	ConfigurationInit(&config);
 70	GBAConfigLoad(&config);
 71
 72	struct GBAOptions opts = {};
 73	struct GBAArguments args = {};
 74	struct GraphicsOpts graphicsOpts = {};
 75
 76	struct SubParser subparser;
 77
 78	GBAConfigMapGeneralOpts(&config, PORT, &opts);
 79	GBAConfigMapGraphicsOpts(&config, PORT, &opts);
 80
 81	initParserForGraphics(&subparser, &graphicsOpts);
 82	if (!parseArguments(&args, &opts, argc, argv, &subparser)) {
 83		usage(argv[0], subparser.usage);
 84		freeArguments(&args);
 85		GBAConfigFreeOpts(&opts);
 86		return 1;
 87	}
 88
 89	renderer.viewportWidth = opts.width;
 90	renderer.viewportHeight = opts.height;
 91#if SDL_VERSION_ATLEAST(2, 0, 0)
 92	renderer.events.fullscreen = opts.fullscreen;
 93	renderer.events.windowUpdated = 0;
 94#endif
 95
 96	if (!_GBASDLInit(&renderer)) {
 97		freeArguments(&args);
 98		GBAConfigFreeOpts(&opts);
 99		return 1;
100	}
101
102	struct GBAThread context = {
103		.renderer = &renderer.d.d,
104		.audioBuffers = 512,
105		.startCallback = _GBASDLStart,
106		.cleanCallback = _GBASDLClean,
107		.sync.videoFrameWait = false,
108		.sync.audioWait = true,
109		.userData = &renderer
110	};
111
112	context.debugger = createDebugger(&args);
113
114	GBAMapOptionsToContext(&opts, &context);
115	GBAMapArgumentsToContext(&args, &context);
116
117	renderer.audio.samples = context.audioBuffers;
118	GBASDLInitAudio(&renderer.audio);
119
120	renderer.events.bindings = &context.inputMap;
121	GBASDLInitEvents(&renderer.events);
122	GBASDLEventsLoadConfig(&renderer.events, &config);
123
124	GBAThreadStart(&context);
125
126	_GBASDLRunloop(&context, &renderer);
127
128	GBAThreadJoin(&context);
129	freeArguments(&args);
130	GBAConfigFreeOpts(&opts);
131	free(context.debugger);
132
133	_GBASDLDeinit(&renderer);
134
135	return 0;
136}
137
138static int _GBASDLInit(struct GLSoftwareRenderer* renderer) {
139	if (SDL_Init(SDL_INIT_VIDEO) < 0) {
140		return 0;
141	}
142
143#ifndef COLOR_16_BIT
144	SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);
145	SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8);
146	SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
147#else
148	SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 5);
149#ifdef COLOR_5_6_5
150	SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 6);
151#else
152	SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 5);
153#endif
154	SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 5);
155#endif
156
157#if SDL_VERSION_ATLEAST(2, 0, 0)
158	renderer->window = SDL_CreateWindow(PROJECT_NAME, SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, renderer->viewportWidth, renderer->viewportHeight, SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE | (SDL_WINDOW_FULLSCREEN_DESKTOP * renderer->events.fullscreen));
159	SDL_GL_CreateContext(renderer->window);
160	SDL_GL_SetSwapInterval(1);
161	SDL_GetWindowSize(renderer->window, &renderer->viewportWidth, &renderer->viewportHeight);
162	renderer->events.window = renderer->window;
163#else
164	SDL_GL_SetAttribute(SDL_GL_SWAP_CONTROL, 1);
165#ifdef COLOR_16_BIT
166	SDL_SetVideoMode(renderer->viewportWidth, renderer->viewportHeight, 16, SDL_OPENGL);
167#else
168	SDL_SetVideoMode(renderer->viewportWidth, renderer->viewportHeight, 32, SDL_OPENGL);
169#endif
170#endif
171
172	renderer->d.outputBuffer = malloc(256 * 256 * 4);
173	renderer->d.outputBufferStride = 256;
174	glGenTextures(1, &renderer->tex);
175	glBindTexture(GL_TEXTURE_2D, renderer->tex);
176	glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
177	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
178	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
179#ifndef _WIN32
180	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
181	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
182#endif
183
184	glViewport(0, 0, renderer->viewportWidth, renderer->viewportHeight);
185
186	return 1;
187}
188
189static void _GBASDLRunloop(struct GBAThread* context, struct GLSoftwareRenderer* renderer) {
190	SDL_Event event;
191
192	glEnable(GL_TEXTURE_2D);
193	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
194	glEnableClientState(GL_VERTEX_ARRAY);
195	glVertexPointer(2, GL_INT, 0, _glVertices);
196	glTexCoordPointer(2, GL_INT, 0, _glTexCoords);
197	glMatrixMode (GL_PROJECTION);
198	glLoadIdentity();
199	glOrtho(0, 240, 160, 0, 0, 1);
200	while (context->state < THREAD_EXITING) {
201		if (GBASyncWaitFrameStart(&context->sync, context->frameskip)) {
202			glBindTexture(GL_TEXTURE_2D, renderer->tex);
203#ifdef COLOR_16_BIT
204#ifdef COLOR_5_6_5
205			glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 256, 256, 0, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, renderer->d.outputBuffer);
206#else
207			glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 256, 256, 0, GL_RGBA, GL_UNSIGNED_SHORT_1_5_5_5_REV, renderer->d.outputBuffer);
208#endif
209#else
210			glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 256, 256, 0, GL_RGBA, GL_UNSIGNED_BYTE, renderer->d.outputBuffer);
211#endif
212			if (context->sync.videoFrameWait) {
213				glFlush();
214			}
215		}
216		glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
217		GBASyncWaitFrameEnd(&context->sync);
218#if SDL_VERSION_ATLEAST(2, 0, 0)
219		SDL_GL_SwapWindow(renderer->window);
220#else
221		SDL_GL_SwapBuffers();
222#endif
223
224		while (SDL_PollEvent(&event)) {
225			GBASDLHandleEvent(context, &renderer->events, &event);
226#if SDL_VERSION_ATLEAST(2, 0, 0)
227			// Event handling can change the size of the screen
228			if (renderer->events.windowUpdated) {
229				SDL_GetWindowSize(renderer->window, &renderer->viewportWidth, &renderer->viewportHeight);
230				glViewport(0, 0, renderer->viewportWidth, renderer->viewportHeight);
231				renderer->events.windowUpdated = 0;
232			}
233#endif
234		}
235	}
236}
237
238static void _GBASDLDeinit(struct GLSoftwareRenderer* renderer) {
239	free(renderer->d.outputBuffer);
240
241	GBASDLDeinitEvents(&renderer->events);
242	GBASDLDeinitAudio(&renderer->audio);
243#if SDL_VERSION_ATLEAST(2, 0, 0)
244	SDL_DestroyWindow(renderer->window);
245#endif
246	SDL_Quit();
247}
248
249static void _GBASDLStart(struct GBAThread* threadContext) {
250	struct GLSoftwareRenderer* renderer = threadContext->userData;
251	renderer->audio.audio = &threadContext->gba->audio;
252	renderer->audio.thread = threadContext;
253}
254
255static void _GBASDLClean(struct GBAThread* threadContext) {
256	struct GLSoftwareRenderer* renderer = threadContext->userData;
257	renderer->audio.audio = 0;
258}