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		.audioBuffers = 512,
 74		.videoSync = false,
 75		.audioSync = true,
 76	};
 77	struct GBAArguments args = {};
 78	struct GraphicsOpts graphicsOpts = {};
 79
 80	struct SubParser subparser;
 81
 82	GBAConfigMapGeneralOpts(&config, PORT, &opts);
 83	GBAConfigMapGraphicsOpts(&config, PORT, &opts);
 84
 85	initParserForGraphics(&subparser, &graphicsOpts);
 86	if (!parseArguments(&args, &opts, argc, argv, &subparser)) {
 87		usage(argv[0], subparser.usage);
 88		freeArguments(&args);
 89		GBAConfigFreeOpts(&opts);
 90		return 1;
 91	}
 92
 93	renderer.viewportWidth = opts.width;
 94	renderer.viewportHeight = opts.height;
 95#if SDL_VERSION_ATLEAST(2, 0, 0)
 96	renderer.events.fullscreen = opts.fullscreen;
 97	renderer.events.windowUpdated = 0;
 98#endif
 99
100	if (!_GBASDLInit(&renderer)) {
101		freeArguments(&args);
102		GBAConfigFreeOpts(&opts);
103		return 1;
104	}
105
106	struct GBAThread context = {
107		.renderer = &renderer.d.d,
108		.startCallback = _GBASDLStart,
109		.cleanCallback = _GBASDLClean,
110		.userData = &renderer
111	};
112
113	context.debugger = createDebugger(&args);
114
115	GBAMapOptionsToContext(&opts, &context);
116	GBAMapArgumentsToContext(&args, &context);
117
118	renderer.audio.samples = context.audioBuffers;
119	GBASDLInitAudio(&renderer.audio);
120
121	renderer.events.bindings = &context.inputMap;
122	GBASDLInitEvents(&renderer.events);
123	GBASDLEventsLoadConfig(&renderer.events, &config);
124
125	GBAThreadStart(&context);
126
127	_GBASDLRunloop(&context, &renderer);
128
129	GBAThreadJoin(&context);
130	freeArguments(&args);
131	GBAConfigFreeOpts(&opts);
132	free(context.debugger);
133
134	_GBASDLDeinit(&renderer);
135
136	return 0;
137}
138
139static int _GBASDLInit(struct GLSoftwareRenderer* renderer) {
140	if (SDL_Init(SDL_INIT_VIDEO) < 0) {
141		return 0;
142	}
143
144#ifndef COLOR_16_BIT
145	SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);
146	SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8);
147	SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
148#else
149	SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 5);
150#ifdef COLOR_5_6_5
151	SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 6);
152#else
153	SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 5);
154#endif
155	SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 5);
156#endif
157
158#if SDL_VERSION_ATLEAST(2, 0, 0)
159	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));
160	SDL_GL_CreateContext(renderer->window);
161	SDL_GL_SetSwapInterval(1);
162	SDL_GetWindowSize(renderer->window, &renderer->viewportWidth, &renderer->viewportHeight);
163	renderer->events.window = renderer->window;
164#else
165	SDL_GL_SetAttribute(SDL_GL_SWAP_CONTROL, 1);
166#ifdef COLOR_16_BIT
167	SDL_SetVideoMode(renderer->viewportWidth, renderer->viewportHeight, 16, SDL_OPENGL);
168#else
169	SDL_SetVideoMode(renderer->viewportWidth, renderer->viewportHeight, 32, SDL_OPENGL);
170#endif
171#endif
172
173	renderer->d.outputBuffer = malloc(256 * 256 * 4);
174	renderer->d.outputBufferStride = 256;
175	glGenTextures(1, &renderer->tex);
176	glBindTexture(GL_TEXTURE_2D, renderer->tex);
177	glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
178	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
179	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
180#ifndef _WIN32
181	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
182	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
183#endif
184
185	glViewport(0, 0, renderer->viewportWidth, renderer->viewportHeight);
186
187	return 1;
188}
189
190static void _GBASDLRunloop(struct GBAThread* context, struct GLSoftwareRenderer* renderer) {
191	SDL_Event event;
192
193	glEnable(GL_TEXTURE_2D);
194	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
195	glEnableClientState(GL_VERTEX_ARRAY);
196	glVertexPointer(2, GL_INT, 0, _glVertices);
197	glTexCoordPointer(2, GL_INT, 0, _glTexCoords);
198	glMatrixMode (GL_PROJECTION);
199	glLoadIdentity();
200	glOrtho(0, 240, 160, 0, 0, 1);
201	while (context->state < THREAD_EXITING) {
202		if (GBASyncWaitFrameStart(&context->sync, context->frameskip)) {
203			glBindTexture(GL_TEXTURE_2D, renderer->tex);
204#ifdef COLOR_16_BIT
205#ifdef COLOR_5_6_5
206			glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 256, 256, 0, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, renderer->d.outputBuffer);
207#else
208			glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 256, 256, 0, GL_RGBA, GL_UNSIGNED_SHORT_1_5_5_5_REV, renderer->d.outputBuffer);
209#endif
210#else
211			glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 256, 256, 0, GL_RGBA, GL_UNSIGNED_BYTE, renderer->d.outputBuffer);
212#endif
213			if (context->sync.videoFrameWait) {
214				glFlush();
215			}
216		}
217		glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
218		GBASyncWaitFrameEnd(&context->sync);
219#if SDL_VERSION_ATLEAST(2, 0, 0)
220		SDL_GL_SwapWindow(renderer->window);
221#else
222		SDL_GL_SwapBuffers();
223#endif
224
225		while (SDL_PollEvent(&event)) {
226			GBASDLHandleEvent(context, &renderer->events, &event);
227#if SDL_VERSION_ATLEAST(2, 0, 0)
228			// Event handling can change the size of the screen
229			if (renderer->events.windowUpdated) {
230				SDL_GetWindowSize(renderer->window, &renderer->viewportWidth, &renderer->viewportHeight);
231				glViewport(0, 0, renderer->viewportWidth, renderer->viewportHeight);
232				renderer->events.windowUpdated = 0;
233			}
234#endif
235		}
236	}
237}
238
239static void _GBASDLDeinit(struct GLSoftwareRenderer* renderer) {
240	free(renderer->d.outputBuffer);
241
242	GBASDLDeinitEvents(&renderer->events);
243	GBASDLDeinitAudio(&renderer->audio);
244#if SDL_VERSION_ATLEAST(2, 0, 0)
245	SDL_DestroyWindow(renderer->window);
246#endif
247	SDL_Quit();
248}
249
250static void _GBASDLStart(struct GBAThread* threadContext) {
251	struct GLSoftwareRenderer* renderer = threadContext->userData;
252	renderer->audio.audio = &threadContext->gba->audio;
253	renderer->audio.thread = threadContext;
254}
255
256static void _GBASDLClean(struct GBAThread* threadContext) {
257	struct GLSoftwareRenderer* renderer = threadContext->userData;
258	renderer->audio.audio = 0;
259}