mirror of
https://github.com/glest/glest-source.git
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346 lines
8.9 KiB
C++
346 lines
8.9 KiB
C++
// ==============================================================
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// This file is part of MegaGlest Shared Library (www.glest.org)
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//
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// Copyright (C) 2012 Mark Vejvoda (mark_vejvoda@hotmail.com)
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//
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// You can redistribute this code and/or modify it under
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// the terms of the GNU General Public License as published
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// by the Free Software Foundation; either version 2 of the
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// License, or (at your option) any later version
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// ==============================================================
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#include <GL/glew.h>
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#include "video_player.h"
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#include <SDL.h>
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#include <SDL_mutex.h>
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#include <vector>
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#if defined(WIN32)
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#include <windows.h>
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#endif
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#ifdef HAS_LIBVLC
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#include <vlc/vlc.h>
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#endif
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#if defined(WIN32)
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/**
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* @param location The location of the registry key. For example "Software\\Bethesda Softworks\\Morrowind"
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* @param name the name of the registry key, for example "Installed Path"
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* @return the value of the key or an empty string if an error occured.
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*/
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std::string getRegKey(const std::string& location, const std::string& name){
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HKEY key;
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CHAR value[1024];
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DWORD bufLen = 1024*sizeof(CHAR);
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long ret;
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ret = RegOpenKeyExA(HKEY_LOCAL_MACHINE, location.c_str(), 0, KEY_QUERY_VALUE, &key);
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if( ret != ERROR_SUCCESS ){
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return std::string();
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}
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ret = RegQueryValueExA(key, name.c_str(), 0, 0, (LPBYTE) value, &bufLen);
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RegCloseKey(key);
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if ( (ret != ERROR_SUCCESS) || (bufLen > 1024*sizeof(TCHAR)) ){
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return std::string();
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}
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string stringValue = value;
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size_t i = stringValue.length();
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while( i > 0 && stringValue[i-1] == '\0' ){
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--i;
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}
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return stringValue.substr(0,i);
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}
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#endif
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struct ctx {
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GLuint textureId; // Texture ID
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SDL_Surface *surf;
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SDL_mutex *mutex;
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int width;
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int height;
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void *rawData;
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};
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// Load a texture
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static void loadTexture(struct ctx *ctx) {
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void *rawData = ctx->rawData;
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Uint8 * pixelSource = 0;
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Uint8 * pixelDestination = (Uint8 *) rawData;
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Uint32 pix = 0;
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for (unsigned int i = ctx->height; i > 0; i--) {
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for (unsigned int j = 0; j < ctx->width; j++) {
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pixelSource = (Uint8 *) ctx->surf->pixels + (i-1) * ctx->surf->pitch + j * 2;
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pix = *(Uint16 *) pixelSource;
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SDL_GetRGBA(pix, ctx->surf->format, &(pixelDestination[0]), &(pixelDestination[1]), &(pixelDestination[2]), &(pixelDestination[3]));
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pixelDestination += 4;
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}
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}
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// Building the texture
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glBindTexture(GL_TEXTURE_2D, ctx->textureId);
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glTexImage2D(GL_TEXTURE_2D, 0, 4, ctx->width, ctx->height, 0, GL_RGBA, GL_UNSIGNED_BYTE, (Uint8 *) rawData);
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}
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static void *lock(void *data, void **p_pixels) {
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struct ctx *ctx = (struct ctx *)data;
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SDL_LockMutex(ctx->mutex);
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SDL_LockSurface(ctx->surf);
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*p_pixels = ctx->surf->pixels;
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return NULL; /* picture identifier, not needed here */
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}
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static void unlock(void *data, void *id, void *const *p_pixels) {
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struct ctx *ctx = (struct ctx *)data;
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/* VLC just rendered the video, but we can also render stuff */
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SDL_UnlockSurface(ctx->surf);
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SDL_UnlockMutex(ctx->mutex);
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}
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static void display(void *data, void *id) {
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/* VLC wants to display the video */
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(void) data;
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}
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VideoPlayer::VideoPlayer(string filename, SDL_Surface *surface,
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int width, int height,int colorBits,string pluginsPath,
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bool verboseEnabled) {
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this->filename = filename;
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this->surface = surface;
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this->width = width;
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this->height = height;
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this->colorBits = colorBits;
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this->pluginsPath = pluginsPath;
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this->verboseEnabled = verboseEnabled;
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this->stop = false;
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}
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VideoPlayer::~VideoPlayer() {
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}
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bool VideoPlayer::hasBackEndVideoPlayer() {
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#ifdef HAS_LIBVLC
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return true;
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#endif
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return false;
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}
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void VideoPlayer::PlayVideo() {
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#ifdef HAS_LIBVLC
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libvlc_instance_t *libvlc = NULL;
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libvlc_media_t *m = NULL;
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libvlc_media_player_t *mp = NULL;
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// string pluginParam = "";
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// if(pluginsPath != "") {
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// pluginParam = "--plugin-path=" + pluginsPath;
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// }
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std::vector<const char *> vlc_argv;
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vlc_argv.push_back("--no-xlib" /* tell VLC to not use Xlib */);
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vlc_argv.push_back("--no-video-title-show");
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if(verboseEnabled) vlc_argv.push_back("--verbose=2");
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#if defined(WIN32)
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if(verboseEnabled) _putenv("VLC_VERBOSE=2");
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#endif
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int vlc_argc = vlc_argv.size();
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// char const *vlc_argv[] =
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// {
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// //"--no-audio", /* skip any audio track */
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// "--no-xlib", /* tell VLC to not use Xlib */
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// "--no-video-title-show",
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// pluginParam.c_str(),
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// };
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// int vlc_argc = sizeof(vlc_argv) / sizeof(*vlc_argv);
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#endif
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SDL_Surface *empty = NULL;
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SDL_Event event;
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int done = 0, action = 0, pause = 0, n = 0;
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struct ctx ctx;
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ctx.width = width;
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ctx.height = height;
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ctx.rawData = (void *) malloc(width * height * 4);
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glEnable(GL_TEXTURE_2D);
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glEnable(GL_DEPTH_TEST);
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// Init Texture
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glGenTextures(1, &ctx.textureId);
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glBindTexture(GL_TEXTURE_2D, ctx.textureId);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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empty = SDL_CreateRGBSurface(SDL_SWSURFACE, width, height,
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colorBits, 0, 0, 0, 0);
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ctx.surf = SDL_CreateRGBSurface(SDL_SWSURFACE, width, height,
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colorBits, 0x001f, 0x07e0, 0xf800, 0);
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ctx.mutex = SDL_CreateMutex();
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bool successLoadingVLC = false;
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#ifdef HAS_LIBVLC
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/*
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* Initialize libVLC
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*/
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if(verboseEnabled) printf("Trying [%s]\n",getenv("VLC_PLUGIN_PATH"));
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libvlc = libvlc_new(vlc_argc, &vlc_argv[0]);
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/* It is meaningless to try all this because we have to restart mg to pickup new env vars
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#if defined(WIN32)
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if(libvlc == NULL) {
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// For windows check registry for install path
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std::string strValue = getRegKey("Software\\VideoLAN\\VLC", "InstallDir");
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if(strValue != "") {
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if(strValue.length() >= 2) {
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if(strValue[0] == '"') {
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strValue = strValue.erase(0);
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}
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if(strValue[strValue.length()-1] == '"') {
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strValue = strValue.erase(strValue.length()-1);
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}
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}
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strValue = "VLC_PLUGIN_PATH=" + strValue;
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_putenv(strValue.c_str());
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if(verboseEnabled) printf("Trying [%s]\n",getenv("VLC_PLUGIN_PATH"));
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libvlc = libvlc_new(vlc_argc, &vlc_argv[0]);
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}
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if(libvlc == NULL) {
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_putenv("VLC_PLUGIN_PATH=c:\\program files\\videolan\\vlc\\plugins");
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if(verboseEnabled) printf("Trying [%s]\n",getenv("VLC_PLUGIN_PATH"));
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libvlc = libvlc_new(vlc_argc, &vlc_argv[0]);
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}
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if(libvlc == NULL) {
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_putenv("VLC_PLUGIN_PATH=\\program files\\videolan\\vlc\\plugins");
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if(verboseEnabled) printf("Trying [%s]\n",getenv("VLC_PLUGIN_PATH"));
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libvlc = libvlc_new(vlc_argc, &vlc_argv[0]);
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}
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if(libvlc == NULL) {
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_putenv("VLC_PLUGIN_PATH=c:\\program files (x86)\\videolan\\vlc\\plugins");
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if(verboseEnabled) printf("Trying [%s]\n",getenv("VLC_PLUGIN_PATH"));
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libvlc = libvlc_new(vlc_argc, &vlc_argv[0]);
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}
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if(libvlc == NULL) {
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_putenv("VLC_PLUGIN_PATH=\\program files (x86)\\videolan\\vlc\\plugins");
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if(verboseEnabled) printf("Trying [%s]\n",getenv("VLC_PLUGIN_PATH"));
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libvlc = libvlc_new(vlc_argc, &vlc_argv[0]);
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}
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}
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#endif
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*/
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if(libvlc != NULL) {
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m = libvlc_media_new_path(libvlc, filename.c_str());
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mp = libvlc_media_player_new_from_media(m);
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libvlc_media_release(m);
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libvlc_video_set_callbacks(mp, lock, unlock, display, &ctx);
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libvlc_video_set_format(mp, "RV16", width, height, this->surface->pitch);
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libvlc_media_player_play(mp);
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successLoadingVLC = true;
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}
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#endif
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/*
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* Main loop
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*/
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bool needToQuit = false;
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while(successLoadingVLC == true && !done && stop == false) {
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action = 0;
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/* Keys: enter (fullscreen), space (pause), escape (quit) */
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while( SDL_PollEvent( &event ) ) {
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switch(event.type) {
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case SDL_QUIT:
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done = 1;
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needToQuit = true;
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break;
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case SDL_KEYDOWN:
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action = event.key.keysym.sym;
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break;
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case SDL_MOUSEBUTTONDOWN:
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done = 1;
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break;
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}
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}
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if(!done && stop == false) {
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switch(action) {
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case SDLK_ESCAPE:
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done = 1;
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break;
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case SDLK_RETURN:
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//options ^= SDL_FULLSCREEN;
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//screen = SDL_SetVideoMode(WIDTH, HEIGHT, 0, options);
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done = 1;
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break;
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case ' ':
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//pause = !pause;
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break;
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}
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if(!pause) {
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n++;
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}
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loadTexture(&ctx); // Loading the texture
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// Square
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glBegin(GL_QUADS);
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glTexCoord2d(0, 1);
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glVertex2f(-0.85, 0.85);
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glTexCoord2d(1, 1);
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glVertex2f(0.85, 0.85);
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glTexCoord2d(1, 0);
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glVertex2f(0.85, -0.85);
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glTexCoord2d(0, 0);
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glVertex2f(-0.85, -0.85);
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glEnd();
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SDL_GL_SwapBuffers();
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}
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}
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#ifdef HAS_LIBVLC
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if(libvlc != NULL) {
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/*
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* Stop stream and clean up libVLC
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*/
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libvlc_media_player_stop(mp);
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libvlc_media_player_release(mp);
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libvlc_release(libvlc);
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}
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#endif
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/*
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* Close window and clean up libSDL
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*/
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SDL_DestroyMutex(ctx.mutex);
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SDL_FreeSurface(ctx.surf);
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SDL_FreeSurface(empty);
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glDeleteTextures(1, &ctx.textureId);
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free(ctx.rawData);
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if(needToQuit == true) {
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SDL_Event quit_event = {SDL_QUIT};
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SDL_PushEvent(&quit_event);
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}
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}
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