/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "RenderServer.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "FrameBuffer.h"

#include <sys/types.h>
#include <unistd.h>
#include <codec_defs.h>
#ifdef _WIN32
#include <winsock2.h>
#endif

#ifdef __linux__
#include <X11/Xlib.h>
#endif

static void printUsage(const char *progName)
{
    fprintf(stderr, "Usage: %s -windowid <windowid> [options]\n", progName);
    fprintf(stderr, "    -windowid <windowid>   - window id to render into\n");
    fprintf(stderr, "    -x <num>               - render subwindow x position\n");
    fprintf(stderr, "    -y <num>               - render subwindow y position\n");
    fprintf(stderr, "    -width <num>           - render subwindow width\n");
    fprintf(stderr, "    -height <num>          - render subwindow height\n");
    exit(-1);
}

int main(int argc, char *argv[])
{
    int winX = 0;
    int winY = 0;
    int winWidth = 320;
    int winHeight = 480;
    FBNativeWindowType windowId = NULL;
    int iWindowId  = 0;

    //
    // Parse command line arguments
    //
    for (int i=1; i<argc; i++) {
        if (!strcmp(argv[i], "-windowid")) {
            if (++i >= argc || sscanf(argv[i],"%d", &iWindowId) != 1) {
                printUsage(argv[0]);
            }
        }
        else if (!strncmp(argv[i], "-x", 2)) {
            if (++i >= argc || sscanf(argv[i],"%d", &winX) != 1) {
                printUsage(argv[0]);
            }
        }
        else if (!strncmp(argv[i], "-y", 2)) {
            if (++i >= argc || sscanf(argv[i],"%d", &winY) != 1) {
                printUsage(argv[0]);
            }
        }
        else if (!strncmp(argv[i], "-width", 6)) {
            if (++i >= argc || sscanf(argv[i],"%d", &winWidth) != 1) {
                printUsage(argv[0]);
            }
        }
        else if (!strncmp(argv[i], "-height", 7)) {
            if (++i >= argc || sscanf(argv[i],"%d", &winHeight) != 1) {
                printUsage(argv[0]);
            }
        }
    }

    windowId = (FBNativeWindowType)iWindowId;
    if (!windowId) {
        // window id must be provided
        printUsage(argv[0]);
    }

#if 0 //Enable to attach gdb to renderer on startup
    fprintf(stderr, "renderer pid %d , press any key to continue...\n", getpid());
    getchar();
#else
    fprintf(stderr, "renderer pid %d \n", getpid());
#endif

#ifdef _WIN32
    WSADATA  wsaData;
    int      rc = WSAStartup( MAKEWORD(2,2), &wsaData);
    if (rc != 0) {
            printf( "could not initialize Winsock\n" );
    }
#endif

#ifdef __linux__
    // some OpenGL implementations may call X functions
    // it is safer to synchronize all X calls made by all the
    // rendering threads. (although the calls we do are locked
    // in the FrameBuffer singleton object).
    XInitThreads();
#endif

    //
    // initialize Framebuffer
    //
    bool inited = FrameBuffer::initialize(winWidth, winHeight);
    if (!inited) {
        fprintf(stderr,"Failed to initialize Framebuffer\n");
        return -1;
    }

    inited = FrameBuffer::setupSubWindow(windowId,
                                         winX, winY, winWidth, winHeight, 0.0);
    if (!inited) {
        fprintf(stderr,"Failed to create subwindow Framebuffer\n");
        return -1;
    }

    //
    // Create and run a render server listening to the given port number
    //
    char addr[256];
    RenderServer *server = RenderServer::create(addr, sizeof(addr));
    if (!server) {
        fprintf(stderr,"Cannot initialize render server\n");
        return -1;
    }
    printf("render server listening at '%s'\n", addr);

#ifndef _WIN32
    //
    // run the server listener loop
    //
    server->Main();
#else
    //
    // on windows we need to handle messages for the
    // created subwindow. So we run the server on a seperate
    // thread and running the windows message pump loop
    // in this main thread.
    //
    server->start();

    //
    // Dispatch events for the subwindow
    // During termination of the render server, the FrameBuffer
    // will be finalized, the Framebuffer subwindow will
    // get destroyed and the following loop will exit.
    //
    MSG msg;
    HWND hWnd = FrameBuffer::getFB()->getSubWindow();
    while( GetMessage(&msg, hWnd, 0, 0) > 0 ) {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }
#endif

    return 0;
}