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