122 lines
2.9 KiB
C++
122 lines
2.9 KiB
C++
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#include "Video.h"
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#include <GL/gl.h>
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#include <GL/glu.h>
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#include <SDL.h>
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#include <iostream>
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#include <SDL_sound.h>
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#include <math.h>
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using namespace std;
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static void Video_sound_callback(void * userdata, Uint8 * stream, int len)
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{
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static int pos = 0;
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Sint16 * str = (Sint16 *) stream;
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for (int i = 0; i < len / 4; i++)
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{
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str[i*2] = (Sint16) (32000.0 * sin(pos * 263.0 / 44100.0 * 2.0 * M_PI));
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str[i*2+1] = 0;
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pos++;
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}
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}
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Video::Video()
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{
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if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER))
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{
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cerr << "SDL_Init() returned error!" << endl;
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exit(3);
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}
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const SDL_VideoInfo * vidInfo = SDL_GetVideoInfo();
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if (vidInfo != NULL)
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{
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m_defaultWidth = vidInfo->current_w;
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m_defaultHeight = vidInfo->current_h;
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}
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else
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{
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cerr << "Warning: SDL_GetVideoInfo() returned NULL!" << endl;
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m_defaultWidth = 1024;
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m_defaultHeight = 768;
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}
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m_surface = NULL;
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m_width = 0;
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m_height = 0;
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// Sound_Init();
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SDL_AudioSpec desired;
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desired.freq = 44100;
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desired.format = AUDIO_S16SYS;
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desired.channels = 2;
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desired.samples = 4096;
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desired.callback = Video_sound_callback;
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desired.userdata = this;
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if (SDL_OpenAudio(&desired, NULL) < 0)
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{
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cerr << "Sound_OpenAudio() error." << endl;
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exit(3);
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}
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}
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Video::~Video()
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{
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Sound_Quit();
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SDL_Quit();
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}
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void Video::start(int width, int height, bool fullscreen, bool grab_input,
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int samples)
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{
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if (m_surface == NULL)
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{
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if (width == 0)
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width = m_defaultWidth;
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if (height == 0)
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height = m_defaultHeight;
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int flags = SDL_HWSURFACE | SDL_OPENGL;
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if (fullscreen)
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flags |= SDL_FULLSCREEN;
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SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
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if (samples > 1)
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{
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SDL_GL_SetAttribute(SDL_GL_MULTISAMPLEBUFFERS, 1);
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SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES, samples);
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}
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m_surface = SDL_SetVideoMode(width, height, 32, flags);
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if (grab_input)
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{
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SDL_ShowCursor(SDL_DISABLE);
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SDL_WM_GrabInput(SDL_GRAB_ON);
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}
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SDL_WM_SetCaption("Anaglym", "Anaglym");
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m_fullscreen = fullscreen;
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m_width = width;
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m_height = height;
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glEnable(GL_DEPTH_TEST);
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glEnable(GL_LIGHTING);
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glEnable(GL_LIGHT0);
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glShadeModel(GL_SMOOTH);
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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gluPerspective(60.0, (double) width / (double) height, 0.01, 10000.0);
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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}
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}
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void Video::stop()
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{
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if (m_surface != NULL)
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{
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SDL_FreeSurface(m_surface);
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m_surface = NULL;
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}
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}
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