/********************************************************************************

 *                                                                              *

 * Test of the overlay used for moved pictures, test more closed to real life.  *

 * Running trojan moose :) Coded by Mike Gorchak.                               *

 *                                                                              *

 ********************************************************************************/

#include <stdlib.h>

#include <stdio.h>

#include <string.h>

#include "SDL.h"

#define MOOSEPIC_W 64

#define MOOSEPIC_H 88

#define MOOSEFRAME_SIZE (MOOSEPIC_W * MOOSEPIC_H)

#define MOOSEFRAMES_COUNT 10

SDL_Color MooseColors[84]={

    { 49,  49,  49}, { 66,  24,   0}, { 66,  33,   0}, { 66,  66,  66},

    { 66, 115,  49}, { 74,  33,   0}, { 74,  41,  16}, { 82,  33,   8},

    { 82,  41,   8}, { 82,  49,  16}, { 82,  82,  82}, { 90,  41,   8},

    { 90,  41,  16}, { 90,  57,  24}, { 99,  49,  16}, { 99,  66,  24},

    { 99,  66,  33}, { 99,  74,  33}, {107,  57,  24}, {107,  82,  41},

    {115,  57,  33}, {115,  66,  33}, {115,  66,  41}, {115,  74,   0},

    {115,  90,  49}, {115, 115, 115}, {123,  82,   0}, {123,  99,  57},

    {132,  66,  41}, {132,  74,  41}, {132,  90,   8}, {132,  99,  33},

    {132,  99,  66}, {132, 107,  66}, {140,  74,  49}, {140,  99,  16},

    {140, 107,  74}, {140, 115,  74}, {148, 107,  24}, {148, 115,  82},

    {148, 123,  74}, {148, 123,  90}, {156, 115,  33}, {156, 115,  90},

    {156, 123,  82}, {156, 132,  82}, {156, 132,  99}, {156, 156, 156},

    {165, 123,  49}, {165, 123,  90}, {165, 132,  82}, {165, 132,  90},

    {165, 132,  99}, {165, 140,  90}, {173, 132,  57}, {173, 132,  99},

    {173, 140, 107}, {173, 140, 115}, {173, 148,  99}, {173, 173, 173},

    {181, 140,  74}, {181, 148, 115}, {181, 148, 123}, {181, 156, 107},

    {189, 148, 123}, {189, 156,  82}, {189, 156, 123}, {189, 156, 132},

    {189, 189, 189}, {198, 156, 123}, {198, 165, 132}, {206, 165,  99},

    {206, 165, 132}, {206, 173, 140}, {206, 206, 206}, {214, 173, 115},

    {214, 173, 140}, {222, 181, 148}, {222, 189, 132}, {222, 189, 156},

    {222, 222, 222}, {231, 198, 165}, {231, 231, 231}, {239, 206, 173}

};

/* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */

static void quit(int rc)

{

	SDL_Quit();

	exit(rc);

}

/* All RGB2YUV conversion code and some other parts of code has been taken from testoverlay.c */

/* NOTE: These RGB conversion functions are not intended for speed,

         only as examples.

*/

void RGBtoYUV(Uint8 *rgb, int *yuv, int monochrome, int luminance)

{

    if (monochrome)

    {

#if 1 /* these are the two formulas that I found on the FourCC site... */

        yuv[0] = 0.299*rgb[0] + 0.587*rgb[1] + 0.114*rgb[2];

        yuv[1] = 128;

        yuv[2] = 128;

#else

        yuv[0] = (0.257 * rgb[0]) + (0.504 * rgb[1]) + (0.098 * rgb[2]) + 16;

        yuv[1] = 128;

        yuv[2] = 128;

#endif

    }

    else

    {

#if 1 /* these are the two formulas that I found on the FourCC site... */

        yuv[0] = 0.299*rgb[0] + 0.587*rgb[1] + 0.114*rgb[2];

        yuv[1] = (rgb[2]-yuv[0])*0.565 + 128;

        yuv[2] = (rgb[0]-yuv[0])*0.713 + 128;

#else

        yuv[0] = (0.257 * rgb[0]) + (0.504 * rgb[1]) + (0.098 * rgb[2]) + 16;

        yuv[1] = 128 - (0.148 * rgb[0]) - (0.291 * rgb[1]) + (0.439 * rgb[2]);

        yuv[2] = 128 + (0.439 * rgb[0]) - (0.368 * rgb[1]) - (0.071 * rgb[2]);

#endif

    }

    if (luminance!=100)

    {

        yuv[0]=yuv[0]*luminance/100;

        if (yuv[0]>255)

            yuv[0]=255;

    }

}

void ConvertRGBtoYV12(SDL_Surface *s, SDL_Overlay *o, int monochrome, int luminance)

{

	int x,y;

	int yuv[3];

	Uint8 *p,*op[3];

	SDL_LockSurface(s);

	SDL_LockYUVOverlay(o);

	/* Convert */

	for(y=0; y<s->h && y<o->h; y++)

	{

		p=((Uint8 *) s->pixels)+s->pitch*y;

		op[0]=o->pixels[0]+o->pitches[0]*y;

		op[1]=o->pixels[1]+o->pitches[1]*(y/2);

		op[2]=o->pixels[2]+o->pitches[2]*(y/2);

		for(x=0; x<s->w && x<o->w; x++)

		{

			RGBtoYUV(p, yuv, monochrome, luminance);

			*(op[0]++)=yuv[0];

			if(x%2==0 && y%2==0)

			{

				*(op[1]++)=yuv[2];

				*(op[2]++)=yuv[1];

			}

			p+=s->format->BytesPerPixel;

		}

	}

	SDL_UnlockYUVOverlay(o);

	SDL_UnlockSurface(s);

}

void ConvertRGBtoIYUV(SDL_Surface *s, SDL_Overlay *o, int monochrome, int luminance)

{

	int x,y;

	int yuv[3];

	Uint8 *p,*op[3];

	SDL_LockSurface(s);

	SDL_LockYUVOverlay(o);

	/* Convert */

	for(y=0; y<s->h && y<o->h; y++)

	{

		p=((Uint8 *) s->pixels)+s->pitch*y;

		op[0]=o->pixels[0]+o->pitches[0]*y;

		op[1]=o->pixels[1]+o->pitches[1]*(y/2);

		op[2]=o->pixels[2]+o->pitches[2]*(y/2);

		for(x=0; x<s->w && x<o->w; x++)

		{

			RGBtoYUV(p,yuv, monochrome, luminance);

			*(op[0]++)=yuv[0];

			if(x%2==0 && y%2==0)

			{

				*(op[1]++)=yuv[1];

				*(op[2]++)=yuv[2];

			}

			p+=s->format->BytesPerPixel;

		}

	}

	SDL_UnlockYUVOverlay(o);

	SDL_UnlockSurface(s);

}

void ConvertRGBtoUYVY(SDL_Surface *s, SDL_Overlay *o, int monochrome, int luminance)

{

	int x,y;

	int yuv[3];

	Uint8 *p,*op;

	SDL_LockSurface(s);

	SDL_LockYUVOverlay(o);

	for(y=0; y<s->h && y<o->h; y++)

	{

		p=((Uint8 *) s->pixels)+s->pitch*y;

		op=o->pixels[0]+o->pitches[0]*y;

		for(x=0; x<s->w && x<o->w; x++)

		{

			RGBtoYUV(p, yuv, monochrome, luminance);

			if(x%2==0)

			{

				*(op++)=yuv[1];

				*(op++)=yuv[0];

				*(op++)=yuv[2];

			}

			else

				*(op++)=yuv[0];

			p+=s->format->BytesPerPixel;

		}

	}

	SDL_UnlockYUVOverlay(o);

	SDL_UnlockSurface(s);

}

void ConvertRGBtoYVYU(SDL_Surface *s, SDL_Overlay *o, int monochrome, int luminance)

{

	int x,y;

	int yuv[3];

	Uint8 *p,*op;

	SDL_LockSurface(s);

	SDL_LockYUVOverlay(o);

	for(y=0; y<s->h && y<o->h; y++)

	{

		p=((Uint8 *) s->pixels)+s->pitch*y;

		op=o->pixels[0]+o->pitches[0]*y;

		for(x=0; x<s->w && x<o->w; x++)

		{

			RGBtoYUV(p,yuv, monochrome, luminance);

			if(x%2==0)

			{

				*(op++)=yuv[0];

				*(op++)=yuv[2];

				op[1]=yuv[1];

			}

			else

			{

				*op=yuv[0];

				op+=2;

			}

			p+=s->format->BytesPerPixel;

		}

	}

	SDL_UnlockYUVOverlay(o);

	SDL_UnlockSurface(s);

}

void ConvertRGBtoYUY2(SDL_Surface *s, SDL_Overlay *o, int monochrome, int luminance)

{

	int x,y;

	int yuv[3];

	Uint8 *p,*op;

	SDL_LockSurface(s);

	SDL_LockYUVOverlay(o);

	for(y=0; y<s->h && y<o->h; y++)

	{

		p=((Uint8 *) s->pixels)+s->pitch*y;

		op=o->pixels[0]+o->pitches[0]*y;

		for(x=0; x<s->w && x<o->w; x++)

		{

			RGBtoYUV(p,yuv, monochrome, luminance);

			if(x%2==0)

			{

				*(op++)=yuv[0];

				*(op++)=yuv[1];

				op[1]=yuv[2];

			}

			else

			{

				*op=yuv[0];

				op+=2;

			}

			p+=s->format->BytesPerPixel;

		}

	}

	SDL_UnlockYUVOverlay(o);

	SDL_UnlockSurface(s);

}

static void PrintUsage(char *argv0)

{

    fprintf(stderr, "Usage: %s [arg] [arg] [arg] ...\n", argv0);

    fprintf(stderr, "\n");

    fprintf(stderr, "Where 'arg' is any of the following options:\n");

    fprintf(stderr, "\n");

    fprintf(stderr, "	-fps <frames per second>\n");

    fprintf(stderr, "	-format <fmt> (one of the: YV12, IYUV, YUY2, UYVY, YVYU)\n");

    fprintf(stderr, "	-scale <scale factor> (initial scale of the overlay)\n");

    fprintf(stderr, "	-help (shows this help)\n");

    fprintf(stderr, "\n");

    fprintf(stderr, "Press ESC to exit, or SPACE to freeze the movie while application running.\n");

    fprintf(stderr, "\n");

}

int main(int argc, char **argv)

{

    Uint8* RawMooseData;

    SDL_RWops* handle;

    SDL_Surface* screen;

    SDL_Surface* MooseFrame[MOOSEFRAMES_COUNT];

    SDL_Overlay* overlay;

    SDL_Rect overlayrect;

    SDL_Event event;

    Uint32 lastftick;

    int paused=0;

    int resized=0;

    int i;

    int fps=12;

    int fpsdelay;

    int overlay_format=SDL_YUY2_OVERLAY;

    int scale=5;

    if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE) < 0)

    {

        fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError());

        return 3;

    }

    while ( argc > 1 )

    {

        if (strcmp(argv[1], "-fps")== 0)

        {

            if (argv[2])

            {

                fps = atoi(argv[2]);

                if (fps==0)

                {

                    fprintf(stderr, "The -fps option requires an argument [from 1 to 1000], default is 12.\n");

                    quit(10);

                }

                if ((fps<0) || (fps>1000))

                {

                    fprintf(stderr, "The -fps option must be in range from 1 to 1000, default is 12.\n");

                    quit(10);

                }

                argv += 2;

                argc -= 2;

            }

            else

            {

                fprintf(stderr, "The -fps option requires an argument [from 1 to 1000], default is 12.\n");

                quit(10);

            }

        } else

        if (strcmp(argv[1], "-format") == 0)

        {

            if (argv[2])

            {

                if (!strcmp(argv[2],"YV12"))

                    overlay_format = SDL_YV12_OVERLAY;

                else if(!strcmp(argv[2],"IYUV"))

                    overlay_format = SDL_IYUV_OVERLAY;

                else if(!strcmp(argv[2],"YUY2"))

                    overlay_format = SDL_YUY2_OVERLAY;

                else if(!strcmp(argv[2],"UYVY"))

                    overlay_format = SDL_UYVY_OVERLAY;

                else if(!strcmp(argv[2],"YVYU"))

                    overlay_format = SDL_YVYU_OVERLAY;

                else

                {

                    fprintf(stderr, "The -format option %s is not recognized, see help for info.\n", argv[2]);

                    quit(10);

                }

                argv += 2;

                argc -= 2;

            }

            else

            {

                fprintf(stderr, "The -format option requires an argument, default is YUY2.\n");

                quit(10);

            }

        } else

        if (strcmp(argv[1], "-scale") == 0)

        {

            if (argv[2])

            {

                scale = atoi(argv[2]);

                if (scale==0)

                {

                    fprintf(stderr, "The -scale option requires an argument [from 1 to 50], default is 5.\n");

                    quit(10);

                }

                if ((scale<0) || (scale>50))

                {

                    fprintf(stderr, "The -scale option must be in range from 1 to 50, default is 5.\n");

                    quit(10);

                }

                argv += 2;

                argc -= 2;

            }

            else

            {

                fprintf(stderr, "The -fps option requires an argument [from 1 to 1000], default is 12.\n");

                quit(10);

            }

        } else

        if ((strcmp(argv[1], "-help") == 0 ) || (strcmp(argv[1], "-h") == 0))

        {

            PrintUsage(argv[0]);

            quit(0);

        } else

        {

            fprintf(stderr, "Unrecognized option: %s.\n", argv[1]);

            quit(10);

        }

        break;

    }

    RawMooseData=(Uint8*)malloc(MOOSEFRAME_SIZE * MOOSEFRAMES_COUNT);

    if (RawMooseData==NULL)

    {

        fprintf(stderr, "Can't allocate memory for movie !\n");

        free(RawMooseData);

        quit(1);

    }

    /* load the trojan moose images */

    handle=SDL_RWFromFile("moose.dat", "rb");

    if (handle==NULL)

    {

        fprintf(stderr, "Can't find the file moose.dat !\n");

        free(RawMooseData);

        quit(2);

    }

    SDL_RWread(handle, RawMooseData, MOOSEFRAME_SIZE, MOOSEFRAMES_COUNT);

    SDL_RWclose(handle);

    /* Set video mode */

    if ( (screen=SDL_SetVideoMode(MOOSEPIC_W*scale, MOOSEPIC_H*scale, 0, SDL_RESIZABLE | SDL_SWSURFACE)) == NULL )

    {

        fprintf(stderr, "Couldn't set video mode: %s\n", SDL_GetError());

        free(RawMooseData);

        quit(4);

    }

    /* Set the window manager title bar */

    SDL_WM_SetCaption("SDL test overlay: running moose", "testoverlay2");

    for (i=0; i<MOOSEFRAMES_COUNT; i++)

    {

        MooseFrame[i]=SDL_CreateRGBSurfaceFrom(RawMooseData+i*MOOSEFRAME_SIZE, MOOSEPIC_W,

                                               MOOSEPIC_H, 8, MOOSEPIC_W, 0, 0, 0, 0);

        if (MooseFrame[i]==NULL)

        {

            fprintf(stderr, "Couldn't create SDL_Surfaces:%s\n", SDL_GetError());

            free(RawMooseData);

            quit(5);

        }

        SDL_SetColors(MooseFrame[i], MooseColors, 0, 84);

	{

		SDL_Surface *newsurf;

		SDL_PixelFormat format;

		format.palette=NULL;

		format.BitsPerPixel=32;

		format.BytesPerPixel=4;

#if SDL_BYTEORDER == SDL_LIL_ENDIAN

		format.Rshift=0;

		format.Gshift=8;

		format.Bshift=16;

#else

		format.Rshift=24;

		format.Gshift=16;

		format.Bshift=8;

#endif

		format.Ashift=0;

		format.Rmask=0xff<<format.Rshift;

		format.Gmask=0xff<<format.Gshift;

		format.Bmask=0xff<<format.Bshift;

		format.Amask=0;

		format.Rloss=0;

		format.Gloss=0;

		format.Bloss=0;

		format.Aloss=8;

		format.colorkey=0;

		format.alpha=0;

		newsurf=SDL_ConvertSurface(MooseFrame[i], &format, SDL_SWSURFACE);

		if(!newsurf)

		{

                    fprintf(stderr, "Couldn't convert picture to 32bits RGB: %s\n", SDL_GetError());

                    quit(6);

		}

		SDL_FreeSurface(MooseFrame[i]);

		MooseFrame[i]=newsurf;

	}

    }

    free(RawMooseData);

    overlay=SDL_CreateYUVOverlay(MOOSEPIC_W, MOOSEPIC_H, overlay_format, screen);

    if (!overlay)

    {

        fprintf(stderr, "Couldn't create overlay: %s\n", SDL_GetError());

        quit(7);

    }

    printf("Created %dx%dx%d %s %s overlay\n",overlay->w,overlay->h,overlay->planes,

           overlay->hw_overlay?"hardware":"software",

           overlay->format==SDL_YV12_OVERLAY?"YV12":

           overlay->format==SDL_IYUV_OVERLAY?"IYUV":

           overlay->format==SDL_YUY2_OVERLAY?"YUY2":

           overlay->format==SDL_UYVY_OVERLAY?"UYVY":

           overlay->format==SDL_YVYU_OVERLAY?"YVYU":

           "Unknown");

    for(i=0; i<overlay->planes; i++)

    {

        printf("  plane %d: pitch=%d\n", i, overlay->pitches[i]);

    }

    overlayrect.x=0;

    overlayrect.y=0;

    overlayrect.w=MOOSEPIC_W*scale;

    overlayrect.h=MOOSEPIC_H*scale;

    /* set the start frame */

    i=0;

    fpsdelay=1000/fps;

    /* Ignore key up events, they don't even get filtered */

    SDL_EventState(SDL_KEYUP, SDL_IGNORE);

    lastftick=SDL_GetTicks();

    /* Loop, waiting for QUIT or RESIZE */

    while (1)

    {

        if (SDL_PollEvent(&event))

        {

            switch (event.type)

            {

                case SDL_VIDEORESIZE:

                     screen=SDL_SetVideoMode(event.resize.w, event.resize.h, 0, SDL_RESIZABLE | SDL_SWSURFACE);

                     overlayrect.w=event.resize.w;

                     overlayrect.h=event.resize.h;

                     if (paused)

                     {

                         resized=1;

                     }

                     break;