Beispiel #1
0
static void SaveGif(const char* FileName,
    GifByteType *OutputBuffer,
    ColorMapObject *OutputColorMap,
    int ExpColorMapSize, int Width, int Height)
{
    int i;
    GifFileType *GifFile;
    GifByteType *Ptr = OutputBuffer;

    if ((GifFile = EGifOpenFileName(FileName,0)) == NULL)
       QuitGifError(GifFile);

    if (EGifPutScreenDesc(GifFile,
          Width, Height, ExpColorMapSize, 0,
          OutputColorMap) == GIF_ERROR ||
        EGifPutImageDesc(GifFile,
          0, 0, Width, Height, FALSE, NULL) == GIF_ERROR)
       QuitGifError(GifFile);

    printf("Image '%s' at (%d, %d) [%dx%d]\n", FileName,
       GifFile->Image.Left, GifFile->Image.Top,
       GifFile->Image.Width, GifFile->Image.Height);

    for (i = 0; i < Height; i++) {
      if (EGifPutLine(GifFile, Ptr, Width) == GIF_ERROR)
         QuitGifError(GifFile);
      Ptr += Width;
    }

    if (EGifCloseFile(GifFile) == GIF_ERROR)
        QuitGifError(GifFile);
}
Beispiel #2
0
void save_image (image* img, char* file, image_format fmt) {
  if (fmt == imgIRMID) {
    FILE* fp;
    fp = fopen (file, "w");
    fwrite (img, img->size, 1, fp);
    fclose (fp);
  } else if (fmt == imgGIF) {
    GifFileType* GifFileOut = (GifFileType *)NULL;
    GifFileOut = EGifOpenFileName (file, 0);

    GifColorType* color_map = new GifColorType[0x100 * 3];
    for (uint n = 0; n < 0x100 ; ++n) {
      color_map[n].Red = n;
      color_map[n].Green = n;
      color_map[n].Blue = n;
    }
    ColorMapObject* map_object = MakeMapObject (0x100, color_map);

    GifRowType pixels = (GifRowType) new GifPixelType[img->xy];
    for (uint n = 0; n < img->xy; ++n)
      pixels[n] = (GifPixelType)data(img)[n];

    EGifPutScreenDesc (GifFileOut, img->dimx, img->dimy, 0x100, 0x100, map_object);
    EGifPutImageDesc (GifFileOut, 0, 0, img->dimx, img->dimy, 0, map_object);
    EGifPutLine (GifFileOut, pixels, img->xy);
    EGifCloseFile (GifFileOut);
  }
}
Beispiel #3
0
/******************************************************************************
* Save the GIF resulting image.						      *
******************************************************************************/
static void SaveGif(GifByteType *OutputBuffer,
		    ColorMapObject *OutputColorMap,
		    int ExpColorMapSize, int Width, int Height)
{
    int i;
    GifFileType *GifFile;
    GifByteType *Ptr = OutputBuffer + Width * (Height - 1);

    /* Open stdout for the output file: */
    if ((GifFile = EGifOpenFileHandle(1)) == NULL)
	QuitGifError(GifFile);

    if (EGifPutScreenDesc(GifFile,
			  Width, Height, ExpColorMapSize, 0,
			  OutputColorMap) == GIF_ERROR ||
	EGifPutImageDesc(GifFile,
			 0, 0, Width, Height, FALSE, NULL) ==
	                                                             GIF_ERROR)
	QuitGifError(GifFile);

    GifQprintf("\n%s: Image 1 at (%d, %d) [%dx%d]:     ",
	       PROGRAM_NAME, GifFile->Image.Left, GifFile->Image.Top,
	       GifFile->Image.Width, GifFile->Image.Height);

    for (i = 0; i < Height; i++) {
	if (EGifPutLine(GifFile, Ptr, Width) == GIF_ERROR)
	    QuitGifError(GifFile);
	GifQprintf("\b\b\b\b%-4d", Height - i - 1);

	Ptr -= Width;
    }

    if (EGifCloseFile(GifFile) == GIF_ERROR)
	QuitGifError(GifFile);
}
Beispiel #4
0
/******************************************************************************
* Save the GIF resulting image.						      *
******************************************************************************/
static void RotateGifImage(GifRowType *ScreenBuffer, GifFileType *SrcGifFile,
			   int Angle, GifColorType *ColorMap,
			   int ExpColorMapSize, int DstWidth, int DstHeight)
{
    int i,
	LineSize = DstWidth * sizeof(GifPixelType);
    GifFileType *DstGifFile;
    GifRowType LineBuffer;

    if ((LineBuffer = (GifRowType) malloc(LineSize)) == NULL)
	GIF_EXIT("Failed to allocate memory required, aborted.");

    /* Open stdout for the output file: */
    if ((DstGifFile = EGifOpenFileHandle(1)) == NULL)
	QuitGifError(DstGifFile);

    if (EGifPutScreenDesc(DstGifFile, DstWidth, DstHeight,
			  ExpColorMapSize, 0, ExpColorMapSize,
			  ColorMap) == GIF_ERROR ||
	EGifPutImageDesc(DstGifFile, 0, 0, DstWidth, DstHeight,
			 FALSE, ExpColorMapSize, NULL) == GIF_ERROR)
	QuitGifError(DstGifFile);

    for (i = 0; i < DstHeight; i++) {
	RotateGifLine(ScreenBuffer, SrcGifFile -> SBackGroundColor,
		      SrcGifFile -> SWidth, SrcGifFile -> SHeight,
		      Angle, LineBuffer, DstWidth, DstHeight, i);
	if (EGifPutLine(DstGifFile, LineBuffer, DstWidth) == GIF_ERROR)
	    QuitGifError(DstGifFile);
	GifQprintf("\b\b\b\b%-4d", DstHeight - i - 1);
    }

    if (EGifCloseFile(DstGifFile) == GIF_ERROR)
	QuitGifError(DstGifFile);
}
Beispiel #5
0
INLINE void *
gif_save(const Image *image, const ColorMapObject *color_map, Frame *frames, int count, int frame_size, int *size)
{
    GifBuffer buf = {0,};
    int estimated = count * (image->columns * image->rows);
    buf.alloc = estimated;
    buf.data = malloc(estimated);
    GifFileType *gif_file = EGifOpen(&buf, gif_buffer_write, NULL);
    if (!gif_file) {
        return NULL;
    }
    if (EGifPutScreenDesc(gif_file, image->columns, image->rows, NCOLORS, 0, color_map) == GIF_ERROR) {
        EGifCloseFile(gif_file, NULL);
        return NULL;
    }
    if (GIF_BEGIN_APP_EXTENSION(gif_file) == GIF_ERROR) {
        EGifCloseFile(gif_file, NULL);
        return NULL;
    }
    unsigned char meta[] = {
        0x01, //  data sub-block index (always 1)
        0xFF, 0xFF // 65535 repetitions - unsigned
    };
    if (GIF_END_APP_EXTENSION(gif_file, meta) == GIF_ERROR) {
        EGifCloseFile(gif_file, NULL);
        return NULL;
    }
    int ii;
    unsigned char *p = (unsigned char*)frames;
    for (ii = 0; ii < count; ii++, p += frame_size) {
        Frame *frame = (Frame*)p;
        // GCE
        unsigned char gce[] = {
            0x08, // no transparency
            frame->duration % 256, // LSB of delay
            frame->duration / 256, // MSB of delay in millisecs
            0x00, // no transparent color
        };
        if (EGifPutExtension(gif_file, GRAPHICS_EXT_FUNC_CODE, sizeof(gce), gce) == GIF_ERROR) {
            EGifCloseFile(gif_file, NULL);
            return NULL;
        }
        if (EGifPutImageDesc(gif_file, 0, 0, frame->width, frame->height, 0, NULL) == GIF_ERROR) {
            EGifCloseFile(gif_file, NULL);
            return NULL;
        }
        int yy;
        GifPixelType *p = frame->data;
        for (yy = 0; yy < frame->height; yy++, p += frame->width) {
            if (EGifPutLine(gif_file, p, frame->width) == GIF_ERROR) {
                EGifCloseFile(gif_file, NULL);
                return NULL;
            }
        }
    } 
    EGifCloseFile(gif_file, NULL);
    *size = buf.size;
    return buf.data;
}
Beispiel #6
0
static int gifdrv_open(screenshot_t *screenshot, const char *filename)
{
    unsigned int i;
    gfxoutputdrv_data_t *sdata;
    GifColorType ColorMap256[256];
#if GIFLIB_MAJOR >= 5
    int ec;
#endif

    if (screenshot->palette->num_entries > 256) {
        log_error(LOG_DEFAULT, "Max 256 colors supported.");
        return -1;
    }

    sdata = lib_malloc(sizeof(gfxoutputdrv_data_t));

    screenshot->gfxoutputdrv_data = sdata;

    sdata->line = 0;

    sdata->ext_filename = util_add_extension_const(filename, gif_drv.default_extension);

    sdata->fd = VICE_EGifOpenFileName(sdata->ext_filename, 0, &ec);

    if (sdata->fd == NULL) {
        lib_free(sdata->ext_filename);
        lib_free(sdata);
        return -1;
    }

    sdata->data = lib_malloc(screenshot->width);

    gif_colors = VICE_MakeMapObject(screenshot->palette->num_entries, ColorMap256);

    for (i = 0; i < screenshot->palette->num_entries; i++) {
        gif_colors->Colors[i].Blue = screenshot->palette->entries[i].blue;
        gif_colors->Colors[i].Green = screenshot->palette->entries[i].green;
        gif_colors->Colors[i].Red = screenshot->palette->entries[i].red;
    }

#if GIFLIB_MAJOR < 5
    EGifSetGifVersion("87a");
#endif

    if (EGifPutScreenDesc(sdata->fd, screenshot->width, screenshot->height, 8, 0, gif_colors) == GIF_ERROR ||
        EGifPutImageDesc(sdata->fd, 0, 0, screenshot->width, screenshot->height, 0, NULL) == GIF_ERROR) {
        VICE_EGifCloseFile(sdata->fd);
        VICE_FreeMapObject(gif_colors);
        lib_free(sdata->data);
        lib_free(sdata->ext_filename);
        lib_free(sdata);
        return -1;
    }

    return 0;
}
/******************************************************************************
 Save the GIF resulting image.
******************************************************************************/
static void SaveGif(GifByteType *OutputBuffer,
            int Width, int Height,
            int ExpColorMapSize, ColorMapObject *OutputColorMap)
{
    int i = 0, Error = 0;
    GifFileType *GifFile = NULL;
    GifByteType *Ptr = OutputBuffer;

    /* Open stdout for the output file: */
    if ((GifFile = EGifOpenFileHandle(1, &Error)) == NULL) {
        PrintGifError(Error);
        exit(EXIT_FAILURE);
    }

    if (EGifPutScreenDesc(GifFile,Width, Height, ExpColorMapSize, 0, OutputColorMap) == GIF_ERROR 
        || EGifPutImageDesc(GifFile,0, 0, Width, Height, false, NULL) == GIF_ERROR){
        PrintGifError(Error);
        if (GifFile != NULL) {
            EGifCloseFile(GifFile, NULL);
        }
        exit(EXIT_FAILURE);
    }

    GifQprintf("\n%s: Image 1 at (%d, %d) [%dx%d]:     ",
           PROGRAM_NAME, GifFile->Image.Left, GifFile->Image.Top,
           GifFile->Image.Width, GifFile->Image.Height);

    for (i = 0; i < Height; i++) {
        if (EGifPutLine(GifFile, Ptr, Width) == GIF_ERROR){
            if (GifFile != NULL) {
                EGifCloseFile(GifFile, NULL);
            }
            exit(EXIT_FAILURE);
        }
        GifQprintf("\b\b\b\b%-4d", Height - i - 1);

        Ptr += Width;
    }

    if (EGifCloseFile(GifFile, &Error) == GIF_ERROR){
        PrintGifError(Error);
        if (GifFile != NULL) {
            EGifCloseFile(GifFile, NULL);
        }
        exit(EXIT_FAILURE);
    }
}
Beispiel #8
0
void init_gifs(char *fileName, int sizex, int sizey)
{
  if(gifFileIn==NULL) {
    gifFileIn = DGifOpenFileName("kaavyhdi.gif");
    if(gifFileIn==NULL) {failExit;}
    printf("%i,%i: %i\n", gifFileIn->SWidth, gifFileIn->SHeight, gifFileIn->SColorResolution);
    if(DGifSlurp(gifFileIn) == GIF_ERROR) failExit;
    printf("slurp done\n");
  }
  gifFileOut = EGifOpenFileName(fileName, FALSE);
  if(gifFileOut==NULL) failExit;

  printf("making output...\n");
  if(EGifPutScreenDesc(gifFileOut, sizex, sizey, gifFileIn->SColorResolution,
                       gifFileIn->SBackGroundColor, 
                       MakeMapObject(gifFileIn->SColorMap->ColorCount,
                                     gifFileIn->SColorMap->Colors)) == GIF_ERROR) failExit;
  if(EGifPutImageDesc(gifFileOut, 0, 0, sizex, sizey, FALSE, NULL) == GIF_ERROR) failExit;
}
Beispiel #9
0
static int gifdrv_open_memmap(const char *filename, int x_size, int y_size, uint8_t *palette)
{
    unsigned int i;
    GifColorType ColorMap256[256];
#if GIFLIB_MAJOR >= 5
    int ec;
#endif

    gifdrv_memmap_ext_filename = util_add_extension_const(filename, gif_drv.default_extension);

    gifdrv_memmap_fd = VICE_EGifOpenFileName(gifdrv_memmap_ext_filename, 0, &ec);

    if (gifdrv_memmap_fd == NULL) {
        lib_free(gifdrv_memmap_ext_filename);
        return -1;
    }

    gif_colors = VICE_MakeMapObject(256, ColorMap256);

    for (i = 0; i < 256; i++) {
        gif_colors->Colors[i].Blue = palette[(i * 3) + 2];
        gif_colors->Colors[i].Green = palette[(i * 3) + 1];
        gif_colors->Colors[i].Red = palette[i * 3];
    }

#if GIFLIB_MAJOR < 5
    EGifSetGifVersion("87a");
#endif

    if (EGifPutScreenDesc(gifdrv_memmap_fd, x_size, y_size, 8, 0, gif_colors) == GIF_ERROR ||
        EGifPutImageDesc(gifdrv_memmap_fd, 0, 0, x_size, y_size, 0, NULL) == GIF_ERROR) {
        VICE_EGifCloseFile(gifdrv_memmap_fd);
        VICE_FreeMapObject(gif_colors);
        lib_free(gifdrv_memmap_ext_filename);
        return -1;
    }

    return 0;
}
Beispiel #10
0
/******************************************************************************
* Interpret the command line and scan the given GIF file.		      *
******************************************************************************/
int main(int argc, char **argv)
{
    int	i, iy, last_iy, l, t, w, h, Error, NumFiles, ExtCode,
	ImageNum = 0,
	SizeFlag = FALSE,
	ScaleFlag = FALSE,
	XScaleFlag = FALSE,
	YScaleFlag = FALSE,
	HelpFlag = FALSE;
    double Scale, y;
    GifRecordType RecordType;
    char s[80];
    GifByteType *Extension;
    GifRowType LineIn, LineOut;
    char **FileName = NULL;
    GifFileType *GifFileIn = NULL, *GifFileOut = NULL;

    if ((Error = GAGetArgs(argc, argv, CtrlStr,
		&GifQuietPrint, &SizeFlag, &XSize, &YSize, &ScaleFlag, &Scale,
		&XScaleFlag, &XScale, &YScaleFlag, &YScale,
		&HelpFlag, &NumFiles, &FileName)) != FALSE ||
		(NumFiles > 1 && !HelpFlag)) {
	if (Error)
	    GAPrintErrMsg(Error);
	else if (NumFiles > 1)
	    GIF_MESSAGE("Error in command line parsing - one GIF file please.");
	GAPrintHowTo(CtrlStr);
	exit(EXIT_FAILURE);
    }

    if (HelpFlag) {
	fprintf(stderr, VersionStr);
	GAPrintHowTo(CtrlStr);
	exit(EXIT_SUCCESS);
    }

    /* If specific direction was set, set other direction to 1: */
    if (!XScaleFlag && YScaleFlag) XScale = 1.0;
    if (!YScaleFlag && XScaleFlag) YScale = 1.0;

    /* If the specific direction was not set, but global one did use it: */
    if (!XScaleFlag && ScaleFlag) XScale = Scale;
    if (!YScaleFlag && ScaleFlag) YScale = Scale;

    if (XScale > MAX_SCALE) {
	sprintf(s, "XScale too big, maximum scale selected instead (%f).",
								MAX_SCALE);
	GIF_MESSAGE(s);
	XScale = MAX_SCALE;
    }
    if (YScale > MAX_SCALE) {
	sprintf(s, "YScale too big, maximum scale selected instead (%f).",
								MAX_SCALE);
	GIF_MESSAGE(s);
	YScale = MAX_SCALE;
    }

    if (NumFiles == 1) {
	if ((GifFileIn = DGifOpenFileName(*FileName)) == NULL)
	    QuitGifError(GifFileIn, GifFileOut);
    }
    else {
	/* Use the stdin instead: */
	if ((GifFileIn = DGifOpenFileHandle(0)) == NULL)
	    QuitGifError(GifFileIn, GifFileOut);
    }
    BackGroundColor = GifFileIn->SBackGroundColor;

    /* If size was specified, it is used to derive the scale: */
    if (SizeFlag) {
	XScale = XSize / ((double) GifFileIn->SWidth);
	YScale = YSize / ((double) GifFileIn->SHeight);
    }
    else
    {
	XSize = (int) (GifFileIn->SWidth * XScale + 0.5);
	YSize = (int) (GifFileIn->SHeight * YScale + 0.5);
    }

    /* As at this time we know the Screen size of the input gif file, and as */
    /* all image(s) in file must be less/equal to it, we can allocate the    */
    /* scan lines for the input file, and output file. The number of lines   */
    /* to allocate for each is set by ScaleDown & XScale & YScale:	     */
    LineOut = (GifRowType) malloc(XSize * sizeof(GifPixelType));
    LineIn = (GifRowType) malloc(GifFileIn->SWidth * sizeof(GifPixelType));

    /* Open stdout for the output file: */
    if ((GifFileOut = EGifOpenFileHandle(1)) == NULL)
	QuitGifError(GifFileIn, GifFileOut);

    /* And dump out its new scaled screen information: */
    if (EGifPutScreenDesc(GifFileOut, XSize, YSize,
	GifFileIn->SColorResolution, GifFileIn->SBackGroundColor,
	GifFileIn->SColorMap) == GIF_ERROR)
	QuitGifError(GifFileIn, GifFileOut);

    /* Scan the content of the GIF file and load the image(s) in: */
    do {
	if (DGifGetRecordType(GifFileIn, &RecordType) == GIF_ERROR)
	    QuitGifError(GifFileIn, GifFileOut);

	switch (RecordType) {
	    case IMAGE_DESC_RECORD_TYPE:
		if (DGifGetImageDesc(GifFileIn) == GIF_ERROR)
		    QuitGifError(GifFileIn, GifFileOut);
		/* Put the image descriptor to out file: */
		l = (int) (GifFileIn->Image.Left * XScale + 0.5);
		w = (int) (GifFileIn->Image.Width * XScale + 0.5);
		t = (int) (GifFileIn->Image.Top * YScale + 0.5);
		h = (int) (GifFileIn->Image.Height * YScale + 0.5);
		if (l < 0) l = 0;
		if (t < 0) t = 0;
		if (l + w > XSize) w = XSize - l;
		if (t + h > YSize) h = YSize - t;

		if (EGifPutImageDesc(GifFileOut, l, t, w, h,
		    GifFileIn->Image.Interlace,
		    GifFileIn->Image.ColorMap) == GIF_ERROR)
		    QuitGifError(GifFileIn, GifFileOut);

		if (GifFileIn->Image.Interlace) {
		    GIF_EXIT("Cannt resize interlaced images - use GifInter first.");
		}
		else {
		    GifQprintf("\n%s: Image %d at (%d, %d) [%dx%d]:     ",
			PROGRAM_NAME, ++ImageNum,
			GifFileOut->Image.Left, GifFileOut->Image.Top,
			GifFileOut->Image.Width, GifFileOut->Image.Height);

		    for (i = GifFileIn->Image.Height, y = 0.0, last_iy = -1;
			 i-- > 0;
			 y += YScale) {
			if (DGifGetLine(GifFileIn, LineIn,
					GifFileIn->Image.Width) == GIF_ERROR)
			    QuitGifError(GifFileIn, GifFileOut);

			iy = (int) y;
			if (last_iy < iy && last_iy < YSize) {
			    ResizeLine(LineIn, LineOut,
				       GifFileIn->Image.Width, GifFileOut->Image.Width);

			    for (;
				 last_iy < iy && last_iy < GifFileOut->Image.Height - 1;
				 last_iy++) {
				GifQprintf("\b\b\b\b%-4d", last_iy + 1);
				if (EGifPutLine(GifFileOut, LineOut,
						GifFileOut->Image.Width) ==
								    GIF_ERROR)
				    QuitGifError(GifFileIn, GifFileOut);
			    }
			}
		    }

		    /* If scale is not dividable - dump last lines: */
		    while (++last_iy < GifFileOut->Image.Height) {
			GifQprintf("\b\b\b\b%-4d", last_iy);
			if (EGifPutLine(GifFileOut, LineOut,
					GifFileOut->Image.Width) == GIF_ERROR)
			    QuitGifError(GifFileIn, GifFileOut);
		    }
		}
		break;
	    case EXTENSION_RECORD_TYPE:
		/* Skip any extension blocks in file: */
		if (DGifGetExtension(GifFileIn, &ExtCode, &Extension) == GIF_ERROR)
		    QuitGifError(GifFileIn, GifFileOut);
		if (EGifPutExtension(GifFileOut, ExtCode, Extension[0],
							Extension) == GIF_ERROR)
		    QuitGifError(GifFileIn, GifFileOut);

		/* No support to more than one extension blocks, so discard: */
		while (Extension != NULL) {
		    if (DGifGetExtensionNext(GifFileIn, &Extension) == GIF_ERROR)
			QuitGifError(GifFileIn, GifFileOut);
		}
		break;
	    case TERMINATE_RECORD_TYPE:
		break;
	    default:		    /* Should be traps by DGifGetRecordType. */
		break;
	}
    }
    while (RecordType != TERMINATE_RECORD_TYPE);

    if (DGifCloseFile(GifFileIn) == GIF_ERROR)
	QuitGifError(GifFileIn, GifFileOut);
    if (EGifCloseFile(GifFileOut) == GIF_ERROR)
	QuitGifError(GifFileIn, GifFileOut);

    free(LineOut);
    free(LineIn);

    return 0;
}
Beispiel #11
0
/******************************************************************************
 Interpret the command line and scan the given GIF file.
******************************************************************************/
int main(int argc, char **argv)
{
    int	i, j, l, c, LevelStep, LogNumLevels, ErrorCode, Count = 0; 
    bool Error, LevelsFlag = false, SizeFlag = false, HelpFlag = false;
    GifRowType Line;
    ColorMapObject *ColorMap;
    GifFileType *GifFile;

    if ((Error = GAGetArgs(argc, argv, CtrlStr,
		&GifNoisyPrint, &LevelsFlag, &NumLevels,
		&SizeFlag, &ImageWidth, &ImageHeight,
		&HelpFlag)) != false) {
	GAPrintErrMsg(Error);
	GAPrintHowTo(CtrlStr);
	exit(EXIT_FAILURE);
    }

    if (HelpFlag) {
	(void)fprintf(stderr, VersionStr, GIFLIB_MAJOR, GIFLIB_MINOR);
	GAPrintHowTo(CtrlStr);
	exit(EXIT_SUCCESS);
    }

    /* Make sure the number of levels is power of 2 (up to 32 levels.). */
    for (i = 1; i < 6; i++) if (NumLevels == (1 << i)) break;
    if (i == 6) GIF_EXIT("#Lvls (-l option) is not power of 2 up to 32.");
    LogNumLevels = i + 3;		       /* Multiple by 8 (see below). */
    LevelStep = 256 / NumLevels;

    /* Make sure the image dimension is a multiple of NumLevels horizontally */
    /* and 7 (White, Red, Green, Blue and Yellow Cyan Magenta) vertically.   */
    ImageWidth = (ImageWidth / NumLevels) * NumLevels;
    ImageHeight = (ImageHeight / 7) * 7;

    /* Open stdout for the output file: */
    if ((GifFile = EGifOpenFileHandle(1, &ErrorCode)) == NULL) {
	PrintGifError(ErrorCode);
	exit(EXIT_FAILURE);
    }

    /* Dump out screen description with given size and generated color map:  */
    /* The color map has 7 NumLevels colors for White, Red, Green and then   */
    /* The secondary colors Yellow Cyan and magenta.			     */
    if ((ColorMap = GifMakeMapObject(8 * NumLevels, NULL)) == NULL)
	GIF_EXIT("Failed to allocate memory required, aborted.");

    for (i = 0; i < 8; i++)				   /* Set color map. */
	for (j = 0; j < NumLevels; j++) {
	    l = LevelStep * j;
	    c = i * NumLevels + j;
	    ColorMap->Colors[c].Red = (i == 0 || i == 1 || i == 4 || i == 6) * l;
	    ColorMap->Colors[c].Green =	(i == 0 || i == 2 || i == 4 || i == 5) * l;
	    ColorMap->Colors[c].Blue = (i == 0 || i == 3 || i == 5 || i == 6) * l;
	}

    if (EGifPutScreenDesc(GifFile, ImageWidth, ImageHeight, LogNumLevels, 0, ColorMap) == GIF_ERROR) {
	PrintGifError(GifFile->Error);
    }

    /* Dump out the image descriptor: */
    if (EGifPutImageDesc(GifFile,
			 0, 0, ImageWidth, ImageHeight, 
			 false, NULL) == GIF_ERROR) {

	PrintGifError(GifFile->Error);
	exit(EXIT_FAILURE);
    }

    GifQprintf("\n%s: Image 1 at (%d, %d) [%dx%d]:     ",
		    PROGRAM_NAME, GifFile->Image.Left, GifFile->Image.Top,
		    GifFile->Image.Width, GifFile->Image.Height);

    /* Allocate one scan line to be used for all image.			     */
    if ((Line = (GifRowType) malloc(sizeof(GifPixelType) * ImageWidth)) == NULL)
	GIF_EXIT("Failed to allocate memory required, aborted.");

    /* Dump the pixels: */
    for (c = 0; c < 7; c++) {
	for (i = 0, l = 0; i < NumLevels; i++)
	    for (j = 0; j < ImageWidth / NumLevels; j++)
		Line[l++] = i + NumLevels * c;
	for (i = 0; i < ImageHeight / 7; i++) {
	    if (EGifPutLine(GifFile, Line, ImageWidth) == GIF_ERROR) {
		PrintGifError(GifFile->Error);
		exit(EXIT_FAILURE);
	    }
	    GifQprintf("\b\b\b\b%-4d", Count++);
	}
    }

    if (EGifCloseFile(GifFile, &ErrorCode) == GIF_ERROR) {
	PrintGifError(ErrorCode);
	exit(EXIT_FAILURE);
    }

    return 0;
}
GDALDataset *
GIFDataset::CreateCopy( const char * pszFilename, GDALDataset *poSrcDS, 
               int bStrict, char ** papszOptions, 
               GDALProgressFunc pfnProgress, void * pProgressData )

{
    int  nBands = poSrcDS->GetRasterCount();
    int  nXSize = poSrcDS->GetRasterXSize();
    int  nYSize = poSrcDS->GetRasterYSize();
    int	 bInterlace = FALSE;

/* -------------------------------------------------------------------- */
/*      Check for interlaced option.                                    */
/* -------------------------------------------------------------------- */
    bInterlace = CSLFetchBoolean(papszOptions, "INTERLACING", FALSE);

/* -------------------------------------------------------------------- */
/*      Some some rudimentary checks                                    */
/* -------------------------------------------------------------------- */
    if( nBands != 1 )
    {
        CPLError( CE_Failure, CPLE_NotSupported, 
                  "GIF driver only supports one band images.\n" );

        return NULL;
    }

    if (nXSize > 65535 || nYSize > 65535)
    {
        CPLError( CE_Failure, CPLE_NotSupported, 
                  "GIF driver only supports datasets up to 65535x65535 size.\n" );

        return NULL;
    }

    if( poSrcDS->GetRasterBand(1)->GetRasterDataType() != GDT_Byte 
        && bStrict )
    {
        CPLError( CE_Failure, CPLE_NotSupported, 
                  "GIF driver doesn't support data type %s. "
                  "Only eight bit bands supported.\n", 
                  GDALGetDataTypeName( 
                      poSrcDS->GetRasterBand(1)->GetRasterDataType()) );

        return NULL;
    }

/* -------------------------------------------------------------------- */
/*      Open the output file.                                           */
/* -------------------------------------------------------------------- */
    GifFileType *hGifFile;
    VSILFILE *fp;

    fp = VSIFOpenL( pszFilename, "wb" );
    if( fp == NULL )
    {
        CPLError( CE_Failure, CPLE_OpenFailed, 
                  "Failed to create %s:\n%s", 
                  pszFilename, VSIStrerror( errno ) );
        return NULL;
    }

#if defined(GIFLIB_MAJOR) && GIFLIB_MAJOR >= 5
    int nError;
    hGifFile = EGifOpen( fp, VSIGIFWriteFunc, &nError );
#else
    hGifFile = EGifOpen( fp, VSIGIFWriteFunc );
#endif
    if( hGifFile == NULL )
    {
        VSIFCloseL( fp );
        CPLError( CE_Failure, CPLE_OpenFailed, 
                  "EGifOpenFilename(%s) failed.  Does file already exist?",
                  pszFilename );

        return NULL;
    }

/* -------------------------------------------------------------------- */
/*      Prepare colortable.                                             */
/* -------------------------------------------------------------------- */
    GDALRasterBand	*poBand = poSrcDS->GetRasterBand(1);
    ColorMapObject	*psGifCT;
    int			iColor;

    if( poBand->GetColorTable() == NULL )
    {
        psGifCT = GifMakeMapObject( 256, NULL );
        for( iColor = 0; iColor < 256; iColor++ )
        {
            psGifCT->Colors[iColor].Red = (GifByteType) iColor;
            psGifCT->Colors[iColor].Green = (GifByteType) iColor;
            psGifCT->Colors[iColor].Blue = (GifByteType) iColor;
        }
    }
    else
    {
        GDALColorTable	*poCT = poBand->GetColorTable();
        int nFullCount = 1;

        while( nFullCount < poCT->GetColorEntryCount() )
            nFullCount = nFullCount * 2;

        psGifCT = GifMakeMapObject( nFullCount, NULL );
        for( iColor = 0; iColor < poCT->GetColorEntryCount(); iColor++ )
        {
            GDALColorEntry	sEntry;

            poCT->GetColorEntryAsRGB( iColor, &sEntry );
            psGifCT->Colors[iColor].Red = (GifByteType) sEntry.c1;
            psGifCT->Colors[iColor].Green = (GifByteType) sEntry.c2;
            psGifCT->Colors[iColor].Blue = (GifByteType) sEntry.c3;
        }
        for( ; iColor < nFullCount; iColor++ )
        {
            psGifCT->Colors[iColor].Red = 0;
            psGifCT->Colors[iColor].Green = 0;
            psGifCT->Colors[iColor].Blue = 0;
        }
    }

/* -------------------------------------------------------------------- */
/*      Setup parameters.                                               */
/* -------------------------------------------------------------------- */
    if (EGifPutScreenDesc(hGifFile, nXSize, nYSize, 
                          psGifCT->ColorCount, 255, psGifCT) == GIF_ERROR)
    {
        GifFreeMapObject(psGifCT);
        GDALPrintGifError(hGifFile, "Error writing gif file.");
        GIFAbstractDataset::myEGifCloseFile(hGifFile);
        VSIFCloseL( fp );
        return NULL;
    }
    
    GifFreeMapObject(psGifCT);
    psGifCT = NULL;

    /* Support for transparency */
    int bNoDataValue;
    double noDataValue = poBand->GetNoDataValue(&bNoDataValue);
    if (bNoDataValue && noDataValue >= 0 && noDataValue <= 255)
    {
        unsigned char extensionData[4];
        extensionData[0] = 1; /*  Transparent Color Flag */
        extensionData[1] = 0;
        extensionData[2] = 0;
        extensionData[3] = (unsigned char)noDataValue;
        EGifPutExtension(hGifFile, 0xf9, 4, extensionData);
    }

    if (EGifPutImageDesc(hGifFile, 0, 0, nXSize, nYSize, bInterlace, NULL) == GIF_ERROR )
    {
        GDALPrintGifError(hGifFile, "Error writing gif file.");
        GIFAbstractDataset::myEGifCloseFile(hGifFile);
        VSIFCloseL( fp );
        return NULL;
    }

/* -------------------------------------------------------------------- */
/*      Loop over image, copying image data.                            */
/* -------------------------------------------------------------------- */
    CPLErr      eErr;
    GDALPamDataset *poDS;
    GByte      *pabyScanline;

    pabyScanline = (GByte *) CPLMalloc( nXSize );

    if( !pfnProgress( 0.0, NULL, pProgressData ) )
        eErr = CE_Failure;

    if( !bInterlace )
    {
        for( int iLine = 0; iLine < nYSize; iLine++ )
        {
            eErr = poBand->RasterIO( GF_Read, 0, iLine, nXSize, 1, 
                                     pabyScanline, nXSize, 1, GDT_Byte,
                                     nBands, nBands * nXSize );

            if( eErr != CE_None || EGifPutLine( hGifFile, pabyScanline, nXSize ) == GIF_ERROR )
            {
                CPLError( CE_Failure, CPLE_AppDefined, 
                          "Error writing gif file." );
                goto error;
            }

            if( !pfnProgress( (iLine + 1) * 1.0 / nYSize, NULL, pProgressData ) )
            {
                goto error;
            }

        }
    }
    else
    {
        int 	i, j;
        int nLinesRead = 0;
        int nLinesToRead = 0;
        for ( i = 0; i < 4; i++)
        {
            for (j = InterlacedOffset[i]; j < nYSize; j += InterlacedJumps[i]) 
            {
                nLinesToRead ++;
            }
        }

        /* Need to perform 4 passes on the images: */
        for ( i = 0; i < 4; i++)
        {
            for (j = InterlacedOffset[i]; j < nYSize; j += InterlacedJumps[i]) 
            {
                eErr= poBand->RasterIO( GF_Read, 0, j, nXSize, 1, 
                                        pabyScanline, nXSize, 1, GDT_Byte,
                                        1, nXSize );

                if (eErr != CE_None || EGifPutLine(hGifFile, pabyScanline, nXSize) == GIF_ERROR)
                {
                    CPLError( CE_Failure, CPLE_AppDefined, 
                            "Error writing gif file." );
                    goto error;
                }

                nLinesRead ++;
                if( !pfnProgress( nLinesRead * 1.0 / nYSize, NULL, pProgressData ) )
                {
                    goto error;
                }
            }
        }
    }

    CPLFree( pabyScanline );
    pabyScanline = NULL;

/* -------------------------------------------------------------------- */
/*      cleanup                                                         */
/* -------------------------------------------------------------------- */
    if (GIFAbstractDataset::myEGifCloseFile(hGifFile) == GIF_ERROR)
    {
        CPLError( CE_Failure, CPLE_AppDefined, 
                  "EGifCloseFile() failed.\n" );
        hGifFile = NULL;
        goto error;
    }
    hGifFile = NULL;

    VSIFCloseL( fp );
    fp = NULL;

/* -------------------------------------------------------------------- */
/*      Do we need a world file?                                          */
/* -------------------------------------------------------------------- */
    if( CSLFetchBoolean( papszOptions, "WORLDFILE", FALSE ) )
    {
    	double      adfGeoTransform[6];
	
	if( poSrcDS->GetGeoTransform( adfGeoTransform ) == CE_None )
            GDALWriteWorldFile( pszFilename, "wld", adfGeoTransform );
    }

/* -------------------------------------------------------------------- */
/*      Re-open dataset, and copy any auxilary pam information.         */
/* -------------------------------------------------------------------- */

    /* If outputing to stdout, we can't reopen it, so we'll return */
    /* a fake dataset to make the caller happy */
    CPLPushErrorHandler(CPLQuietErrorHandler);
    poDS = (GDALPamDataset*) GDALOpen(pszFilename, GA_ReadOnly);
    CPLPopErrorHandler();
    if (poDS)
    {
        poDS->CloneInfo( poSrcDS, GCIF_PAM_DEFAULT );
        return poDS;
    }
    else
    {
        CPLErrorReset();

        GIFDataset* poGIF_DS = new GIFDataset();
        poGIF_DS->nRasterXSize = nXSize;
        poGIF_DS->nRasterYSize = nYSize;
        for(int i=0;i<nBands;i++)
            poGIF_DS->SetBand( i+1, new GIFRasterBand( poGIF_DS, i+1, NULL, 0 ) );
        return poGIF_DS;
    }

error:
    if (hGifFile)
        GIFAbstractDataset::myEGifCloseFile(hGifFile);
    if (fp)
        VSIFCloseL( fp );
    if (pabyScanline)
        CPLFree( pabyScanline );
    return NULL;
}
Beispiel #13
0
/******************************************************************************
* Interpret the command line, prepar global data and call the Gif routines.   *
******************************************************************************/
void main(int argc, char **argv)
{
    int	Error, NumFiles, ImageWidth, ImageHeight, Dummy, Red, Green, Blue,
	ColorMapSize, InFileHandle,
	ImageSizeFlag = FALSE, ColorMapFlag = FALSE, HelpFlag = FALSE;
    char **FileName = NULL, *ColorMapFile;
    GifColorType *ColorMap;
    FILE *InColorMapFile;

    if ((Error = GAGetArgs(argc, argv, CtrlStr, &GifQuitePrint,
		&ImageSizeFlag, &ImageWidth, &ImageHeight,
		&ColorMapFlag, &ColorMapFile,
		&HelpFlag,
		&NumFiles, &FileName)) != FALSE ||
		(NumFiles > 1 && !HelpFlag)) {
	if (Error)
	    GAPrintErrMsg(Error);
	else if (NumFiles > 1)
	    GIF_MESSAGE("Error in command line parsing - one GIF file please.");
	GAPrintHowTo(CtrlStr);
	exit(1);
    }

    if (HelpFlag) {
	fprintf(stderr, VersionStr);
	GAPrintHowTo(CtrlStr);
	exit(0);
    }

    if (ColorMapFlag) {
	/* Read color map from given file: */
	if ((InColorMapFile = fopen(ColorMapFile, "rt")) == NULL) {
	    GIF_MESSAGE("Failed to open COLOR MAP file (not exists!?).");
	    exit(2);
	}
	if ((ColorMap = (GifColorType *) 
	                malloc(sizeof(GifColorType) * 255))  /* Biggest map. */
	    == NULL) {
	    GIF_MESSAGE("Failed to allocate bitmap, aborted.");
	    exit(3);
	}

	for (ColorMapSize = 0;
	     ColorMapSize < 256 && !feof(InColorMapFile);
	     ColorMapSize++) {
	    fscanf(InColorMapFile, "%3d %3d %3d %3d\n",
						&Dummy, &Red, &Green, &Blue);
	    ColorMap[ColorMapSize].Red = Red;
	    ColorMap[ColorMapSize].Green = Green;
	    ColorMap[ColorMapSize].Blue = Blue;
	}
    }
    else {
	ColorMap = EGAPallete;
	ColorMapSize = EGA_PALLETE_SIZE;
    }

    if (NumFiles == 1) {
#ifdef __MSDOS__
	if ((InFileHandle = open(*FileName, O_RDONLY | O_BINARY)) == -1) {
#else
	if ((InFileHandle = open(*FileName, O_RDONLY)) == -1) {
#endif /* __MSDOS__ */
	    GIF_MESSAGE("Failed to open RAW image file (not exists!?).");
	    exit(2);
	}
	dup2(InFileHandle, 0);		       /* Make stdin from this file. */
    }
    else {
#ifdef __MSDOS__
	setmode(0, O_BINARY);		  /* Make sure it is in binary mode. */
#endif /* __MSDOS__ */
    }

#ifdef __MSDOS__
    setvbuf(stdin, NULL, _IOFBF, GIF_FILE_BUFFER_SIZE);
#endif /* __MSDOS__ */

    /* Conver Raw image from stdin to Gif file in stdout: */
    Raw2Gif(ImageWidth, ImageHeight, ColorMap, ColorMapSize);
}

/******************************************************************************
* Convert Raw image (One byte per pixel) into Gif file. Raw data is read from *
* stdin, and Gif is dumped to stdout. ImagwWidth times ImageHeight bytes are  *
* read. Color map is dumped from ColorMap.				      *
******************************************************************************/
int Raw2Gif(int ImageWidth, int ImageHeight,
				GifColorType *ColorMap, int ColorMapSize)
{
    static int BitsPerPixelArray[] = { 2, 4 ,8, 16, 32, 64, 128, 256 };
    int i, j, BitsPerPixel;
    static GifPixelType *ScanLine;
    GifFileType *GifFile;

    for (BitsPerPixel = 0;
	 BitsPerPixel < 8 && BitsPerPixelArray[BitsPerPixel] != ColorMapSize;
	 BitsPerPixel++);
    if (++BitsPerPixel > 8) {
	GIF_MESSAGE("Number of color map is NOT power of 2 up to 256.");
	exit(3);
    }

    if ((ScanLine = (GifPixelType *) malloc(sizeof(GifPixelType) * ImageWidth))
								== NULL) {
	GIF_MESSAGE("Failed to allocate scan line, aborted.");
	exit(3);
    }

    if ((GifFile = EGifOpenFileHandle(1)) == NULL) {	   /* Gif to stdout. */
	free((char *) ScanLine);
	return HandleGifError(GifFile);
    }

    if (EGifPutScreenDesc(GifFile, ImageWidth, ImageHeight, BitsPerPixel,
			  0, BitsPerPixel, ColorMap) == GIF_ERROR) {
	free((char *) ScanLine);
	return HandleGifError(GifFile);
    }

    if (EGifPutImageDesc(GifFile, 0, 0, ImageWidth, ImageHeight, FALSE, 1,
			 NULL) == GIF_ERROR) {
	free((char *) ScanLine);
	return HandleGifError(GifFile);
    }

    /* Here it is - get one raw line from stdin, and dump to stdout Gif: */
    GifQprintf("\n%s: Image 1 at (0, 0) [%dx%d]:     ",
	PROGRAM_NAME, ImageWidth, ImageHeight);
    for (i = 0; i < ImageHeight; i++) {
	/* Note we assume here PixelSize == Byte, which is not necessarily   */
	/* so. If not - must read one byte at a time, and coerce to pixel.   */
	if (fread(ScanLine, 1, ImageWidth, stdin) != ImageWidth) {
	    GIF_MESSAGE("RAW input file ended prematurely.");
	    exit(3);
	}

	for (j = 0; j < ImageWidth; j++)
	    if (ScanLine[j] >= ColorMapSize)
		GIF_MESSAGE("Warning: RAW data color > maximum color map entry.");

	if (EGifPutLine(GifFile, ScanLine, ImageWidth) == GIF_ERROR) {
	    free((char *) ScanLine);
	    return HandleGifError(GifFile);
	}
	GifQprintf("\b\b\b\b%-4d", i);
    }

    if (EGifCloseFile(GifFile) == GIF_ERROR) {
	free((char *) ScanLine);
	return HandleGifError(GifFile);
    }

    free((char *) ScanLine);
    return 0;
}

/******************************************************************************
* Handle last GIF error. Try to close the file and free all allocated memory. *
******************************************************************************/
static int HandleGifError(GifFileType *GifFile)
{
    int i = GifLastError();

    if (EGifCloseFile(GifFile) == GIF_ERROR) {
	GifLastError();
    }
    return i;
}
Beispiel #14
0
static int write_gif_info(const psx_image* image, image_writer_fn func, void* param,
                                                     float quality, psx_image_header* header)
{
    size_t buf_size;
#if GIFLIB_MAJOR >= 5
    int errorcode = 0;
#endif

    struct gif_image_ctx* ctx = (struct gif_image_ctx*)calloc(1, sizeof(struct gif_image_ctx));
    if (!ctx) {
        return -1; // out of memory.
    }

    ctx->writer = func;
    ctx->writer_param = param;

#if GIFLIB_MAJOR >= 5
    if ((ctx->gif = EGifOpen((void*)ctx, write_gif_from_memory, &errorcode)) == NULL) {
        free(ctx);
        return -1;
    }

    if (image->num_frames > 1) {
        EGifSetGifVersion(ctx->gif, true);
    }
#else
    if ((ctx->gif = EGifOpen((void*)ctx, write_gif_from_memory)) == NULL) {
        free(ctx);
        return -1;
    }

    if (image->num_frames > 1) {
        EGifSetGifVersion("89a");
    } else {
        EGifSetGifVersion("87a");
    }
#endif

    if (EGifPutScreenDesc(ctx->gif, image->width, image->height, 8, 0, NULL) == GIF_ERROR) {
        GIF_CLOSE_EFILE(ctx->gif);
        free(ctx);
        return -1;
    }

    if (image->num_frames > 1) { // add netscape2.0 application extension to an animation gif.
#if GIFLIB_MAJOR >= 5
        EGifPutExtensionLeader(ctx->gif, APPLICATION_EXT_FUNC_CODE);
        EGifPutExtensionBlock(ctx->gif, 11, "NETSCAPE2.0");
        EGifPutExtensionBlock(ctx->gif, 3, "\x01\x00\x00");
        EGifPutExtensionTrailer(ctx->gif);
#else
        EGifPutExtensionFirst(ctx->gif, APPLICATION_EXT_FUNC_CODE, 11, "NETSCAPE2.0");
        EGifPutExtensionLast(ctx->gif, APPLICATION_EXT_FUNC_CODE, 3, "\x01\x00\x00");
#endif
    }

    buf_size = image->width * image->height * sizeof(GifByteType);

    ctx->red_buf = (GifByteType*)malloc(buf_size);
    ctx->green_buf = (GifByteType*)malloc(buf_size);
    ctx->blue_buf = (GifByteType*)malloc(buf_size);
    ctx->output_buffer = (GifByteType*)malloc(buf_size);

    if (!ctx->red_buf || !ctx->green_buf || !ctx->blue_buf || !ctx->output_buffer) {
        GIF_CLOSE_EFILE(ctx->gif);

        if (ctx->red_buf) 
            free(ctx->red_buf);
        if (ctx->green_buf)
            free(ctx->green_buf);
        if (ctx->blue_buf)
            free(ctx->blue_buf);
        if (ctx->output_buffer)
            free(ctx->output_buffer);

        free(ctx);
        return -1;
    }

    header->priv = ctx;
    header->width = image->width;
    header->height = image->height;
    header->pitch = image->pitch;
    header->depth = get_depth(image->format);
    header->bpp = get_bpp(image->format);
    header->format = (int)image->format;
    header->alpha = 1;
    header->frames = (int)image->num_frames;
    return 0;
}
Beispiel #15
0
int main(int argc, char **argv) {
   FILE *input_file;
   float arg,size,rx,ry,rz;
   float f,fmin=1e10,fmax=-1e10;
   uint16_t i;
   uint64_t count;
   int xi,yi,zi,xo,yo,zo,nx,ny,nz,dx,dy,dz,x0,y0,z0,h;
   int **image;
   char format,type,comment[256];
   GifFileType *GIFfile;
   ColorMapObject *GIFcmap;
   GifPixelType *GIFline;
   //
   // command line args
   //
   if (!((argc == 6) || (argc == 7)  || (argc == 8) || (argc == 9) || (argc == 10) || (argc == 13) || (argc == 16) || (argc == 19))) {
      printf("command line: vol_gif in.vol out.gif nx ny nz [format [type [arg [size [dx dy dz [x0 y0 z0 [rx ry rz]]]]]]]\n");
      printf("   in.vol = input volume file\n");
      printf("   out.gif = output GIF file\n");
      printf("   nx,ny,nz = x,y,z input voxel number\n");
      printf("   format = 'f' for float 32, 'i' for uint16_t (default 'f')\n");
      printf("   type = 's' for section, 'h' for height (default 's')\n");
      printf("   arg = gamma for 's', threshold for 'h' (default 1)\n");
      printf("   size = mm per voxel (default 1)\n");
      printf("   dx,dy,dz = x,y,z output voxel number (default all)\n");
      printf("   x0,y0,z0 = x,y,z output voxel origin (default 0)\n");
      printf("   to be implemented: rx,ry,rz = view rotation angles (degrees; default 0)\n");
      exit(-1);
      }
   format = 'f';
   type = 's';
   arg = 1;
   size = 1.0;
   rx = ry = rz = 0;
   sscanf(argv[3],"%d",&nx);
   sscanf(argv[4],"%d",&ny);
   sscanf(argv[5],"%d",&nz);
   dx = nx; dy = ny; dz = nz;
   x0 = y0 = z0 = 0;
   if (argc >= 7) {
      sscanf(argv[6],"%c",&format);
      if (!((format == 'f') || (format == 'i'))) {
         printf("vol_gif: oops -- format must be 'f' or 'i'\n");
         exit(-1);
         }
      }
   if (argc >= 8) {
      sscanf(argv[7],"%c",&type);
      if (!((type == 's') || (type == 'h'))) {
         printf("vol_gif: oops -- type must be 's' or 'h'\n");
         exit(-1);
         }
      }
   if (argc >= 9) {
      sscanf(argv[8],"%f",&arg);
      }
   if (argc >= 10) {
      sscanf(argv[9],"%f",&size);
      }
   if (argc >= 13) {
      sscanf(argv[10],"%d",&x0);
      sscanf(argv[11],"%d",&y0);
      sscanf(argv[12],"%d",&z0);
      }
   if (argc >= 16) {
      sscanf(argv[13],"%d",&dx);
      sscanf(argv[14],"%d",&dy);
      sscanf(argv[15],"%d",&dz);
      }
   if (argc >= 19) {
      sscanf(argv[16],"%f",&rx);
      sscanf(argv[17],"%f",&ry);
      sscanf(argv[18],"%f",&rz);
      }
   //
   // check and find limits
   //
   input_file = fopen(argv[1],"rb");
   if (input_file == NULL) {
      printf("vol_gif: oops -- can not open %s\n",argv[1]);
      exit(-1);
      }
   if (((x0 + dx) > nx) || ((y0 + dy) > ny) || ((z0 + dz) > nz)) {
      printf("vol_gif: oops -- region too large\n");
      exit(-1);
      }
   printf("read %s\n",argv[1]);
   if (format == 'f') {
      count = 0;
      while (fread(&f,sizeof(f),1,input_file) != 0) {
         if (f > fmax) fmax = f;
         if (f < fmin) fmin = f;
         count += 1;
         }
      }
   else if (format == 'i') {
      count = 0;
      while (fread(&i,sizeof(i),1,input_file) != 0) {
         if (i > fmax) fmax = i;
         if (i < fmin) fmin = i;
         count += 1;
         }
      }
   printf("   %" PRIu64 " points, min %f, max %f\n",count,fmin,fmax);
   printf("   nx ny nz: %d %d %d\n",nx,ny,nz);
   rewind(input_file);
   //
   // set up color map
   //
#if GIFLIB_MAJOR >= 5
   GIFcmap = GifMakeMapObject(256, NULL);
#else
   GIFcmap = MakeMapObject(256, NULL);
#endif
   for (i = 0; i < 256; i++) {
      GIFcmap->Colors[i].Red = i;
      GIFcmap->Colors[i].Green = i;
      GIFcmap->Colors[i].Blue = i;
      }
   //
   // open GIF file
   //
   printf("write %s\n",argv[2]);

   EGifPutScreenDesc(GIFfile,dx,dy,8,0,GIFcmap);
   unsigned char loop_count[] = {1,0,0};
#if GIFLIB_MAJOR >= 5
   GIFfile = EGifOpenFileName(argv[2], 0, NULL);
   EGifPutExtension(GIFfile, APPLICATION_EXT_FUNC_CODE, 11, "NETSCAPE2.0");
   EGifPutExtension(GIFfile, APPLICATION_EXT_FUNC_CODE, 3, loop_count);
#else
   GIFfile = EGifOpenFileName(argv[2], 0);
   EGifPutExtensionFirst(GIFfile, APPLICATION_EXT_FUNC_CODE, 11, "NETSCAPE2.0");
   EGifPutExtensionLast(GIFfile, APPLICATION_EXT_FUNC_CODE, 3, loop_count);
#endif


   unsigned char delay_count[5] = { 
      0, // no transparency
      0, // delay time
      0, // delay time
      0 // transparent index not used
      };
   //
   // allocate image
   //
   image = malloc(dy*sizeof(int *));
   for (yo = 0; yo < dy; ++yo) {
      image[yo] = malloc(dx*sizeof(int));
      for (xo = 0; xo < dx; ++xo)
         image[yo][xo] = 0;
      }
   GIFline = malloc(dx*sizeof(GifPixelType));
   //
   // scan file
   //
   xi = yi = zi = 0;
   for (zo = 0; zo < dz; ++zo) {
      printf("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b   layer = %d",zo);
      EGifPutExtension(GIFfile,GRAPHICS_EXT_FUNC_CODE,4,delay_count);
      EGifPutImageDesc(GIFfile,0,0,dx,dy,0,NULL);
      //
      // read layer
      //
      for (yo = 0; yo < dy; ++yo) {
         for (xo = 0; xo < dx; ++xo) {
            if (format == 'f') {
               read_voxel_f(input_file,&f,xo+x0,yo+y0,zo+z0,&xi,&yi,&zi,nx,ny,nz);
               if (type == 'h') {
                  h = 255*zo/(nz-1.0);
                  if ((h > image[yo][xo]) && (f > arg))
                     image[yo][xo] = h;
                  GIFline[xo] = image[yo][xo]*(nz-1.0)/zo;
                  }
               else if (type == 's') {
                  GIFline[xo] = 255*pow((f-fmin)/(fmax-fmin),arg);
                  }
               }
            else if (format == 'i') {
               read_voxel_i(input_file,&i,xo+x0,yo+y0,zo+z0,&xi,&yi,&zi,nx,ny,nz);
               if (type == 'h') {
                  h = 255*zo/(nz-1.0);
                  if ((h > image[yo][xo]) && (i > arg))
                     image[yo][xo] = h;
                  GIFline[xo] = image[yo][xo]*(nz-1.0)/zo;
                  }
               else if (type == 's') {
                  GIFline[xo] = 255*pow((i-fmin)/(fmax-fmin),arg);
                  }
               }
            }
         EGifPutLine(GIFfile,GIFline,dx);
         }
      }
   printf("\n");
   //
   // put mm per pixel in comment
   //
   sprintf(comment,"mm per pixel: %f;",size);
   EGifPutComment(GIFfile,comment);
   //
   // exit
   //
   fclose(input_file);
   EGifCloseFile(GIFfile);
   exit(0);
   }
Beispiel #16
0
bool toGif(QImage& img, QString& path)
{
    int errcode;

    if(QFile(path).exists()) // Remove old file
        QFile::remove(path);

    GifFileType* t = EGifOpenFileName(path.toLocal8Bit().data(),true, &errcode);
    if(!t){
        EGifCloseFile(t, &errcode);
        QTextStream(stdout)  << "Can't open\n";
        return false;
    }

    EGifSetGifVersion(t, true);

    GifColorType* colorArr = new GifColorType[256];
    ColorMapObject* cmo = GifMakeMapObject(256, colorArr);

    bool unfinished = false;
    QImage tarQImg(img.width(), img.height(), QImage::Format_Indexed8);
    QVector<QRgb> table;
    for(int y = 0; y < img.height(); y++){
        for(int x = 0; x < img.width(); x++){
            if(table.size() >= 256){
                unfinished = true;
                break;
            }
            QRgb pix;
            if(!table.contains(pix = img.pixel(x,y))){
                table.push_back(pix);
                tarQImg.setColor(tarQImg.colorCount(), pix);
            }
            tarQImg.setPixel(x,y,table.indexOf(pix));
        }
        if(table.size() >= 256){
            unfinished = true;
            break;
        }
    }

    if(unfinished){
        EGifCloseFile(t, &errcode);
        QTextStream(stdout)  << "Unfinished\n";
        return false;
    }


    for(int l = tarQImg.colorCount(); l < 256; l++){
        tarQImg.setColor(l,0);
    }

    if(tarQImg.colorTable().size() != 256){
        EGifCloseFile(t, &errcode);
        QTextStream(stdout)  << "A lot of colors\n";
        return false;
    }

    QVector<QRgb> clTab = tarQImg.colorTable();

    for(int i = 0; i < 255; i++){
        QRgb rgb = clTab[i];
        colorArr[i].Red = qRed(rgb);
        colorArr[i].Green = qGreen(rgb);
        colorArr[i].Blue = qBlue(rgb);
    }
    cmo->Colors = colorArr;

    errcode = EGifPutScreenDesc(t, img.width(), img.height(), 256, 0, cmo);
    if(errcode != GIF_OK){
        EGifCloseFile(t, &errcode);
        QTextStream(stdout)  << "EGifPutScreenDesc error 1\n";
        return false;
    }

    errcode = EGifPutImageDesc(t, 0, 0, img.width(), img.height(), false, 0);
    if(errcode != GIF_OK){
        EGifCloseFile(t, &errcode);
        QTextStream(stdout)  << "EGifPutImageDesc error 2\n";
        return false;
    }

    //gen byte array
    GifByteType* byteArr = tarQImg.bits();

    for(int h = 0; h < tarQImg.height(); h++){
        errcode = EGifPutLine(t, byteArr, tarQImg.width());
        if(errcode != GIF_OK){
            EGifCloseFile(t, &errcode);
            QTextStream(stdout)  << "EGifPutLine error 3\n";
            return false;
        }

        byteArr += tarQImg.width();
        byteArr += ((tarQImg.width() % 4)!=0 ? 4 - (tarQImg.width() % 4) : 0);
    }

    if(errcode != GIF_OK){
        QTextStream(stdout)  << "GIF error 4\n";
        return false;
    }
    EGifCloseFile(t, &errcode);

    return true;
}
Beispiel #17
0
bool CxImageGIF::Encode(CxFile * fp)
{
	if (EncodeSafeCheck(fp)) return false;

	GifFileType *GifFile = NULL;
	ColorMapObject *OutputColorMap = NULL;
	int i, ColorMapSize;

	if(head.biBitCount != 8)
	{
		if(head.biBitCount < 8)IncreaseBpp(8);
		else DecreaseBpp(8, true);
	}

	try
	{
		GifFile = EGifOpen(fp, writeCxFile);

		ColorMapSize = head.biClrUsed;
		OutputColorMap = MakeMapObject(ColorMapSize, NULL);

		RGBQUAD* pPal = GetPalette();
		for(i=0; i<ColorMapSize; ++i) 
		{
			OutputColorMap->Colors[i].Red = pPal[i].rgbRed;
			OutputColorMap->Colors[i].Green = pPal[i].rgbGreen;
			OutputColorMap->Colors[i].Blue = pPal[i].rgbBlue;
		}

		EGifPutScreenDesc(GifFile, head.biWidth, head.biHeight, OutputColorMap->ColorCount, info.nBkgndIndex== -1 ? 0 : info.nBkgndIndex, OutputColorMap);

		FreeMapObject(OutputColorMap);
		OutputColorMap = NULL;

		if(info.nBkgndIndex != -1)
		{
			unsigned char ExtStr[4] = { 1, 0, 0, info.nBkgndIndex };
			EGifPutExtension(GifFile, GRAPHICS_EXT_FUNC_CODE, 4, ExtStr);
		}

		EGifPutImageDesc(GifFile, 0, 0, head.biWidth, head.biHeight, FALSE, NULL);

		for (i = 0; i < head.biHeight; i++)
			EGifPutLine(GifFile, GetBits(head.biHeight - i - 1), head.biWidth);

		EGifCloseFile(GifFile);
		GifFile = NULL;
	} catch (int errid) {
		strncpy(info.szLastError,GifGetErrorMessage(errid),255);
		if(OutputColorMap)
		{
			FreeMapObject(OutputColorMap);
			OutputColorMap = NULL;
		}
		if(GifFile)
		{
			EGifCloseFile(GifFile);
			GifFile = NULL;
		}
		return false;
	} catch (char *message) {
		strncpy(info.szLastError,message,255);
		if(OutputColorMap)
		{
			FreeMapObject(OutputColorMap);
			OutputColorMap = NULL;
		}
		if(GifFile)
		{
			EGifCloseFile(GifFile);
			GifFile = NULL;
		}
		return false;
	}

	return true;
}
Beispiel #18
0
/******************************************************************************
* Perform the disassembly operation - take one input files into few output.   *
******************************************************************************/
static int DoDisassemblyNum(const char *InFileName, char *OutFileName, int FileNum)
{
    int	ExtCode, CodeSize, FileEmpty;
    GifRecordType RecordType;
    char CrntFileName[80], *p;
    GifByteType *Extension, *CodeBlock;
    GifFileType *GifFileIn = NULL, *GifFileOut = NULL;
	int ErrorCode;

    /* If name has type postfix, strip it out, and make sure name is less    */
    /* or equal to 6 chars, so we will have 2 chars in name for numbers.     */
    //strupr(OutFileName);		      /* Make sure all is upper case */
	#if 0
	printf("OutFileName : %s\n", OutFileName);
	if ((p = strrchr(OutFileName, '.')) != NULL && strlen(p) <= 4) p[0] = 0;
    if ((p = strrchr(OutFileName, '/')) != NULL ||
	(p = strrchr(OutFileName, '\\')) != NULL ||
	(p = strrchr(OutFileName, ':')) != NULL) {
	if (strlen(p) > 7) p[7] = 0;   /* p includes the '/', '\\', ':' char */
    }
    else {
	/* Only name is given for current directory: */
	//if (strlen(OutFileName) > 6) OutFileName[6] = 0;
    }
	printf("OutFileName : %s\n", OutFileName);
	#endif

    /* Open input file: */
    if (InFileName != NULL) {
	if ((GifFileIn = DGifOpenFileName(InFileName, &ErrorCode)) == NULL)
	    return QuitGifError(GifFileIn, GifFileOut);
    }
    else {
	/* Use the stdin instead: */
	if ((GifFileIn = DGifOpenFileHandle(0, &ErrorCode)) == NULL)
	    return QuitGifError(GifFileIn, GifFileOut);
    }

    /* Scan the content of GIF file and dump image(s) to seperate file(s): */
	//sprintf(CrntFileName, "%s_%02d.gif", OutFileName, FileNum);
	sprintf(CrntFileName, "%s", OutFileName);
	if ((GifFileOut = EGifOpenFileName(CrntFileName, TRUE, &ErrorCode)) == NULL)
	    return QuitGifError(GifFileIn, GifFileOut);
	FileEmpty = TRUE;

	/* And dump out its exactly same screen information: */
	if (EGifPutScreenDesc(GifFileOut,
	    GifFileIn->SWidth, GifFileIn->SHeight,
	    GifFileIn->SColorResolution, GifFileIn->SBackGroundColor,
	    GifFileIn->SColorMap) == GIF_ERROR)
	    return QuitGifError(GifFileIn, GifFileOut);

	do {
	    if (DGifGetRecordType(GifFileIn, &RecordType) == GIF_ERROR)
			return QuitGifError(GifFileIn, GifFileOut);

	    switch (RecordType) {
		case IMAGE_DESC_RECORD_TYPE:
		    FileEmpty = FALSE;
		    if (DGifGetImageDesc(GifFileIn) == GIF_ERROR)
				return QuitGifError(GifFileIn, GifFileOut);
		    /* Put same image descriptor to out file: */
		    if (EGifPutImageDesc(GifFileOut,
			GifFileIn->Image.Left, GifFileIn->Image.Top,
			GifFileIn->Image.Width, GifFileIn->Image.Height,
			GifFileIn->Image.Interlace,
			GifFileIn->Image.ColorMap) == GIF_ERROR)
				return QuitGifError(GifFileIn, GifFileOut);

		    /* Now read image itself in decoded form as we dont      */
		    /* really care what is there, and this is much faster.   */
		    if (DGifGetCode(GifFileIn, &CodeSize, &CodeBlock) == GIF_ERROR
		     || EGifPutCode(GifFileOut, CodeSize, CodeBlock) == GIF_ERROR)
				return QuitGifError(GifFileIn, GifFileOut);
		    while (CodeBlock != NULL)
			if (DGifGetCodeNext(GifFileIn, &CodeBlock) == GIF_ERROR ||
			    EGifPutCodeNext(GifFileOut, CodeBlock) == GIF_ERROR)
				return QuitGifError(GifFileIn, GifFileOut);
		    break;
		case EXTENSION_RECORD_TYPE:
		    FileEmpty = FALSE;
		    /* Skip any extension blocks in file: */
		    if (DGifGetExtension(GifFileIn, &ExtCode, &Extension)
			== GIF_ERROR)
				return QuitGifError(GifFileIn, GifFileOut);
		    if (EGifPutExtension(GifFileOut, ExtCode, Extension[0],
							Extension) == GIF_ERROR)
				return QuitGifError(GifFileIn, GifFileOut);

		    /* No support to more than one extension blocks, discard */
		    while (Extension != NULL)
			if (DGifGetExtensionNext(GifFileIn, &Extension)
			    == GIF_ERROR)
			    return QuitGifError(GifFileIn, GifFileOut);
		    break;
		case TERMINATE_RECORD_TYPE:
		    break;
		default:	     /* Should be traps by DGifGetRecordType */
		    break;
	    }
	}
	while (RecordType != IMAGE_DESC_RECORD_TYPE &&
	       RecordType != TERMINATE_RECORD_TYPE);

	if (EGifCloseFile(GifFileOut, &ErrorCode) == GIF_ERROR)
	    return QuitGifError(GifFileIn, GifFileOut);
	if (FileEmpty) {
	    /* Might happen on last file - delete it if so: */
	    unlink(CrntFileName);
	}

    if (DGifCloseFile(GifFileIn, &ErrorCode) == GIF_ERROR)
		return QuitGifError(GifFileIn, GifFileOut);
}
Beispiel #19
0
/******************************************************************************
* Interpret the command line and scan the given GIF file.		      *
******************************************************************************/
int main(int argc, char **argv)
{
    int	i, Error, NumFiles, ExtCode, CodeSize, ImageNum = 0,
	ImageFlag = FALSE, ImageNFlag = FALSE, ImageN, ImageX1, ImageY1,
	ImageX2, ImageY2, ImageWidth, ImageDepth,
	Complement = FALSE, HelpFlag = FALSE;
    GifRecordType RecordType;
    GifByteType *Extension, *CodeBlock;
    char **FileName = NULL;
    GifRowType Line;
    GifFileType *GifFileIn = NULL, *GifFileOut = NULL;

    /* Same image dimension vars for both Image & ImageN as only one allowed.*/
    if ((Error = GAGetArgs(argc, argv, CtrlStr, &GifQuietPrint, &Complement,
		&ImageFlag, &ImageX1, &ImageY1, &ImageX2, &ImageY2,
		&ImageNFlag, &ImageN, &ImageX1, &ImageY1, &ImageX2, &ImageY2,
		&HelpFlag, &NumFiles, &FileName)) != FALSE ||
		(NumFiles > 1 && !HelpFlag)) {
	if (Error)
	    GAPrintErrMsg(Error);
	else if (NumFiles > 1)
	    GIF_MESSAGE("Error in command line parsing - one GIF file please.");
	GAPrintHowTo(CtrlStr);
	exit(EXIT_FAILURE);
    }

    if (HelpFlag) {
	fprintf(stderr, VersionStr);
	GAPrintHowTo(CtrlStr);
	exit(EXIT_SUCCESS);
    }

    /* Test to make sure exactly one of ImageFlag & ImageNFlag is set: */
    if ((ImageFlag && ImageNFlag) || (!ImageFlag && !ImageNFlag)) {
	GIF_MESSAGE("Exactly one of [-i ...] && [-n ...] please.");
	GAPrintHowTo(CtrlStr);
	exit(EXIT_FAILURE);
    }
    if (ImageFlag) ImageN = 1;		    /* Its first image we are after. */

    /* Make sure the first coordinates of clipping box are smaller: */
    if (ImageX1 > ImageX2) {
	i = ImageX1;
	ImageX1 = ImageX2;
	ImageX2 = i;
    }
    if (ImageY1 > ImageY2) {
	i = ImageX1;
	ImageY1 = ImageY2;
	ImageY2 = i;
    }

    if (NumFiles == 1) {
	if ((GifFileIn = DGifOpenFileName(*FileName)) == NULL)
	    QuitGifError(GifFileIn, GifFileOut);
    }
    else {
	/* Use the stdin instead: */
	if ((GifFileIn = DGifOpenFileHandle(0)) == NULL)
	    QuitGifError(GifFileIn, GifFileOut);
    }

    /* Open stdout for the output file: */
    if ((GifFileOut = EGifOpenFileHandle(1)) == NULL)
	QuitGifError(GifFileIn, GifFileOut);

    /* Width and depth of clipped image. */
    if (!Complement)
	ImageWidth = ImageX2 - ImageX1 + 1;
    else
	ImageWidth = GifFileIn->SWidth
	    - (ImageX2 != ImageX1) * (ImageX2 - ImageX1 + 1);
    if (!Complement)
	ImageDepth = ImageY2 - ImageY1 + 1;
    else
	ImageDepth = GifFileIn->SHeight
	    - (ImageY2 != ImageY1) * (ImageY2 - ImageY1 + 1);

    /* And dump out exactly same screen information: */
    if (EGifPutScreenDesc(GifFileOut,
	GifFileIn->SWidth, GifFileIn->SHeight,
	GifFileIn->SColorResolution, GifFileIn->SBackGroundColor,
	GifFileIn->SColorMap) == GIF_ERROR)
	QuitGifError(GifFileIn, GifFileOut);

    /* Scan the content of the GIF file and load the image(s) in: */
    do {
	if (DGifGetRecordType(GifFileIn, &RecordType) == GIF_ERROR)
	    QuitGifError(GifFileIn, GifFileOut);

	switch (RecordType) {
	    case IMAGE_DESC_RECORD_TYPE:
		if (DGifGetImageDesc(GifFileIn) == GIF_ERROR)
		    QuitGifError(GifFileIn, GifFileOut);
		if (++ImageNum == ImageN) {
		    /* We can handle only non interlaced images here: */
		    if (GifFileIn->Image.Interlace)
			GIF_EXIT("Image to clip is interlaced - use GifInter first.");

		    /* This is the image we should clip - test sizes and     */
		    /* dump out new clipped screen descriptor if o.k.	     */
		    if (GifFileIn->Image.Width <= ImageX2 ||
			GifFileIn->Image.Height <= ImageY2)
			GIF_EXIT("Image is smaller than given clip dimensions.");

		    /* Put the image descriptor to out file: */
		    if (EGifPutImageDesc(GifFileOut,
			GifFileIn->Image.Left, GifFileIn->Image.Top,
			ImageWidth, ImageDepth,
			FALSE, GifFileIn->Image.ColorMap) == GIF_ERROR)
			QuitGifError(GifFileIn, GifFileOut);

		    /* o.k. - read the image and clip it: */
		    Line = (GifRowType) malloc(GifFileIn->Image.Width *
							sizeof(GifPixelType));
		    GifQprintf("\n%s: Image %d at (%d, %d) [%dx%d]:     ",
			PROGRAM_NAME, ImageNum,
			GifFileIn->Image.Left, GifFileIn->Image.Top,
			GifFileIn->Image.Width, GifFileIn->Image.Height);

		    /* Skip lines below ImageY1: */
		    for (i = 0; i < ImageY1; i++) {
			if (DGifGetLine(GifFileIn, Line, GifFileIn->Image.Width)
			    == GIF_ERROR)
			    QuitGifError(GifFileIn, GifFileOut);

			if (Complement) {
			    if (ImageX1 == ImageX2) {
				/* don't remove any vertical band */
				if (EGifPutLine(GifFileOut, Line,
						ImageWidth) == GIF_ERROR)
				    QuitGifError(GifFileIn, GifFileOut);
			    }
			    else
			    {
				if (EGifPutLine(GifFileOut, Line,
						ImageX1) == GIF_ERROR)
				    QuitGifError(GifFileIn, GifFileOut);

				if (EGifPutLine(GifFileOut,
						&Line[ImageX2 + 1],
						GifFileIn->SWidth - (ImageX2 + 1)
						) == GIF_ERROR)
				    QuitGifError(GifFileIn, GifFileOut);
			    }
			}

			GifQprintf("\b\b\b\b%-4d", i);
		    }

		    /* Clip the lines from ImageY1 to ImageY2 (to X1 - X2): */
		    for (i = ImageY1; i <= ImageY2; i++) {
			if (DGifGetLine(GifFileIn, Line, GifFileIn->Image.Width)
			    == GIF_ERROR)
			    QuitGifError(GifFileIn, GifFileOut);

			if (!Complement)
			    if (EGifPutLine(GifFileOut, &Line[ImageX1],
					    ImageWidth) == GIF_ERROR)
				QuitGifError(GifFileIn, GifFileOut);

			GifQprintf("\b\b\b\b%-4d", i);
		    }

		    /* Skip lines above ImageY2: */
		    for (i = ImageY2 + 1; i < GifFileIn->Image.Height; i++) {
			if (DGifGetLine(GifFileIn, Line, GifFileIn->Image.Width)
			    == GIF_ERROR)
			    QuitGifError(GifFileIn, GifFileOut);

			if (Complement) {
			    if (ImageX1 == ImageX2) {
				/* don't remove any vertical band */
				if (EGifPutLine(GifFileOut, Line,
						ImageWidth) == GIF_ERROR)
				    QuitGifError(GifFileIn, GifFileOut);
			    }
			    else
			    {
				if (EGifPutLine(GifFileOut, Line,
						ImageX1) == GIF_ERROR)
				    QuitGifError(GifFileIn, GifFileOut);

				if (EGifPutLine(GifFileOut,
						&Line[ImageX2 + 1],
						GifFileIn->SWidth - (ImageX2 + 1)
						) == GIF_ERROR)
				    QuitGifError(GifFileIn, GifFileOut);
			    }
			}

			GifQprintf("\b\b\b\b%-4d", i);
		    }

		    free((char *) Line);
		}
		else {
		    /* Copy the image as is (we dont modify this one): */
		    if (EGifPutImageDesc(GifFileOut,
			GifFileIn->Image.Left, GifFileIn->Image.Top,
			GifFileIn->Image.Width, GifFileIn->Image.Height,
			GifFileIn->Image.Interlace,
			GifFileIn->Image.ColorMap) == GIF_ERROR)
			QuitGifError(GifFileIn, GifFileOut);

		    /* Now read image itself in decoded form as we dont      */
		    /* really care what is there, and this is much faster.   */
		    if (DGifGetCode(GifFileIn, &CodeSize, &CodeBlock) == GIF_ERROR
		     || EGifPutCode(GifFileOut, CodeSize, CodeBlock) == GIF_ERROR)
			QuitGifError(GifFileIn, GifFileOut);
		    while (CodeBlock != NULL)
			if (DGifGetCodeNext(GifFileIn, &CodeBlock) == GIF_ERROR ||
			    EGifPutCodeNext(GifFileOut, CodeBlock) == GIF_ERROR)
			    QuitGifError(GifFileIn, GifFileOut);
		}
		break;
	    case EXTENSION_RECORD_TYPE:
		/* Skip any extension blocks in file: */
		if (DGifGetExtension(GifFileIn, &ExtCode, &Extension) == GIF_ERROR)
		    QuitGifError(GifFileIn, GifFileOut);
		if (EGifPutExtension(GifFileOut, ExtCode, Extension[0],
							Extension) == GIF_ERROR)
		    QuitGifError(GifFileIn, GifFileOut);

		/* No support to more than one extension blocks, so discard: */
		while (Extension != NULL) {
		    if (DGifGetExtensionNext(GifFileIn, &Extension) == GIF_ERROR)
			QuitGifError(GifFileIn, GifFileOut);
		}
		break;
	    case TERMINATE_RECORD_TYPE:
		break;
	    default:		    /* Should be traps by DGifGetRecordType. */
		break;
	}
    }
    while (RecordType != TERMINATE_RECORD_TYPE);

    if (DGifCloseFile(GifFileIn) == GIF_ERROR)
	QuitGifError(GifFileIn, GifFileOut);
    if (EGifCloseFile(GifFileOut) == GIF_ERROR)
	QuitGifError(GifFileIn, GifFileOut);

    return 0;
}
/******************************************************************************
 Interpret the command line and scan the given GIF file.
******************************************************************************/
int main(int argc, char **argv)
{
    unsigned int Ratio;
    int	i, l, LevelWidth, LogNumLevels, ErrorCode, Count = 0;
    bool Error, FlipDir, DoAllMaximum = false,
	DirectionFlag = false, LevelsFlag = false, ColorFlag = false,
	MinFlag = false, MaxFlag = false, SizeFlag = false, HelpFlag = false;
    GifPixelType Color;
    char *DirectionStr = DEFAULT_DIR;
    GifRowType Line;
    ColorMapObject *ColorMap;
    GifFileType *GifFile;

    if ((Error = GAGetArgs(argc, argv, CtrlStr, &GifNoisyPrint,
		&DirectionFlag, &DirectionStr, &LevelsFlag, &NumLevels,
		&ColorFlag, &RedColor, &GreenColor, &BlueColor,
		&MinFlag, &MinimumIntensity, &MaxFlag, &MaximumIntensity,
		&SizeFlag, &ImageWidth, &ImageHeight,
		&HelpFlag)) != false) {
	GAPrintErrMsg(Error);
	GAPrintHowTo(CtrlStr);
	exit(EXIT_FAILURE);
    }

    if (HelpFlag) {
	(void)fprintf(stderr, VersionStr, GIFLIB_MAJOR, GIFLIB_MINOR);
	GAPrintHowTo(CtrlStr);
	exit(EXIT_SUCCESS);
    }

    /* Make sure intensities are in the right range: */
    if (MinimumIntensity < 0 || MinimumIntensity > 100 ||
	MaximumIntensity < 0 || MaximumIntensity > 100)
	GIF_EXIT("Intensities (-m or -M options) are not in [0..100] range (percent).");

    /* Convert DirectionStr to our local representation: */
    Direction = DIR_NONE;
    FlipDir = false;
     /* Make sure it's upper case. */
    for (i = 0; i < (int)strlen(DirectionStr);  i++)
	if (islower(DirectionStr[i]))
	    DirectionStr[i] = toupper(DirectionStr[i]);

    switch(DirectionStr[0]) {
	case 'T': /* Top or North */
	case 'N':
	    if (strlen(DirectionStr) < 2)
		Direction = DIR_TOP;
	    else
		switch(DirectionStr[1]) {
		    case 'R':
		    case 'E':
			Direction = DIR_TOP_RIGHT;
			break;
		    case 'L':
		    case 'W':
			Direction = DIR_TOP_LEFT;
			FlipDir = true;
			break;
		}
	    break;
	case 'R': /* Right or East */
	case 'E':
	    Direction = DIR_RIGHT;
	    break;
	case 'B': /* Bottom or South */
	case 'S':
	    if (strlen(DirectionStr) < 2) {
		Direction = DIR_BOT;
		FlipDir = true;
	    }
	    else
		switch(DirectionStr[1]) {
		    case 'R':
		    case 'E':
			Direction = DIR_BOT_RIGHT;
			break;
		    case 'L':
		    case 'W':
			Direction = DIR_BOT_LEFT;
			FlipDir = true;
			break;
		}
	    break;
	case 'L': /* Left or West */
	case 'W':
	    Direction = DIR_LEFT;
	    FlipDir = true;
	    break;
    }
    if (Direction == DIR_NONE)
	GIF_EXIT("Direction requested (-d option) is weird!");

    /* We are going to handle only TOP, TOP_RIGHT, RIGHT, BOT_RIGHT  so flip */
    /* the complement cases (TOP <-> BOT for example) by flipping the	     */
    /* Color i with color (NumLevels - i - 1).				     */
    if (FlipDir) {
	switch (Direction) {
	    case DIR_BOT:
		Direction = DIR_TOP;
		break;
	    case DIR_BOT_LEFT:
		Direction = DIR_TOP_RIGHT;
		break;
	    case DIR_LEFT:
		Direction = DIR_RIGHT;
		break;
	    case DIR_TOP_LEFT:
		Direction = DIR_BOT_RIGHT;
		break;
	}
    }

    /* If binary mask is requested (special case): */
    if (MinimumIntensity == 100 && MaximumIntensity == 100 && NumLevels == 2) {
	MinimumIntensity = 0;
	DoAllMaximum = true;
	Direction = DIR_RIGHT;
    }

    /* Make sure colors are in the right range: */
    if (RedColor > 255 || GreenColor > 255 || BlueColor > 255)
	GIF_EXIT("Colors are not in the ragne [0..255].");

    /* Make sure number of levels is power of 2 (up to 8 bits per pixel).    */
    for (i = 1; i < 8; i++) if (NumLevels == (1 << i)) break;
    if (i == 8) GIF_EXIT("#Lvls (-l option) is not power of 2.");
    LogNumLevels = i;

    /* Open stdout for the output file: */
    if ((GifFile = EGifOpenFileHandle(1, &ErrorCode)) == NULL) {
	PrintGifError(ErrorCode);
	exit(EXIT_FAILURE);
    }

    /* Dump out screen description with given size and generated color map:  */
    if ((ColorMap = GifMakeMapObject(NumLevels, NULL)) == NULL)
	GIF_EXIT("Failed to allocate memory required, aborted.");

    for (i = 1; i <= NumLevels; i++) {
	/* Ratio will be in the range of 0..100 for required intensity: */
	Ratio = (MaximumIntensity * (i * (256 / NumLevels)) +
		 MinimumIntensity * ((NumLevels - i) * (256 / NumLevels))) /
		 256;
	ColorMap->Colors[i-1].Red   = (RedColor * Ratio) / 100;
	ColorMap->Colors[i-1].Green = (GreenColor * Ratio) / 100;
	ColorMap->Colors[i-1].Blue  = (BlueColor * Ratio) / 100;
    }
    if (EGifPutScreenDesc(GifFile,
	ImageWidth, ImageHeight, LogNumLevels, 0, ColorMap)
	== GIF_ERROR)
	QuitGifError(GifFile);

    /* Dump out the image descriptor: */
    if (EGifPutImageDesc(GifFile,
	0, 0, ImageWidth, ImageHeight, false, NULL) == GIF_ERROR)
	QuitGifError(GifFile);

    GifQprintf("\n%s: Image 1 at (%d, %d) [%dx%d]:     ",
	       PROGRAM_NAME, GifFile->Image.Left, GifFile->Image.Top,
	       GifFile->Image.Width, GifFile->Image.Height);

    /* Allocate one scan line twice as big as image is, as we are going to   */
    /* shift along it, while we dump the scan lines:			     */
    if ((Line = (GifRowType) malloc(sizeof(GifPixelType) * ImageWidth * 2)) == NULL)
	GIF_EXIT("Failed to allocate memory required, aborted.");

    if (Direction == DIR_TOP) {
	int LevelHeight;
	/* We must evaluate the line each time level is changing: */
	LevelHeight = ImageHeight / NumLevels;
	for (Color = NumLevels, i = l = 0; i < ImageHeight; i++) {
	    if (i == l) {
		int j;
		/* Time to update the line to next color level: */
		if (Color != 0) Color--;
		for (j = 0; j < ImageWidth; j++)
		    Line[j] = (FlipDir ? NumLevels - Color - 1 : Color);
		l += LevelHeight;
	    }
	    if (EGifPutLine(GifFile, Line, ImageWidth) == GIF_ERROR)
		QuitGifError(GifFile);
	    GifQprintf("\b\b\b\b%-4d", Count++);
	}
    }
    else if (Direction == DIR_RIGHT) {
	/* We pre-prepare the scan lines as going from color zero to maximum */
	/* color and dump the same scan line Height times:		     */
	/* Note this case should handle the Boolean Mask special case.	     */
	LevelWidth = ImageWidth / NumLevels;
	if (DoAllMaximum) {
	    /* Special case - do all in maximum color: */
	    for (i = 0; i < ImageWidth; i++) Line[i] = 1;
	}
	else {
	    for (Color = i = 0, l = LevelWidth; i < ImageWidth; i++, l--) {
		if (l == 0) {
		    l = LevelWidth;
		    if (Color < NumLevels - 1) Color++;
		}
		Line[i] = (FlipDir ? NumLevels - Color - 1 : Color);
	    }
	}

	for (i = 0; i < ImageHeight; i++) {
	    /* coverity[uninit_use_in_call] */
	    if (EGifPutLine(GifFile, Line, ImageWidth) == GIF_ERROR)
		QuitGifError(GifFile);
	    GifQprintf("\b\b\b\b%-4d", Count++);
	}
    }
    else {
	int Accumulator, StartX, StepX;
	/* We are in one of the TOP_RIGHT, BOT_RIGHT cases: we will          */
	/* initialize the Line with its double ImageWidth length from the    */
	/* minimum intensity to the maximum intensity and shift along it     */
	/* while we go along the image height.				     */
	LevelWidth = ImageWidth * 2 / NumLevels;
	for (Color = i = 0, l = LevelWidth; i < ImageWidth * 2; i++, l--) {
	    if (l == 0) {
		l = LevelWidth;
		if (Color < NumLevels - 1) Color++;
	    }
	    Line[i] = (FlipDir ? NumLevels - Color - 1 : Color);
	}
	/* We need to implement a DDA to know how much to shift Line while   */
	/* we go down along image height. we set the parameters for it now:  */
	Accumulator = 0;
	switch(Direction) {
	    case DIR_TOP_RIGHT:
		StartX = ImageWidth;
		StepX = -1;
		break;
	    case DIR_BOT_RIGHT:
	    default:
		StartX = 0;
		StepX = 1;
		break;
	}

	/* Time to dump information out: */
	for (i = 0; i < ImageHeight; i++) {
	    if (EGifPutLine(GifFile, &Line[StartX], ImageWidth) == GIF_ERROR)
		QuitGifError(GifFile);
	    GifQprintf("\b\b\b\b%-4d", Count++);
	    if ((Accumulator += ImageWidth) > ImageHeight) {
		while (Accumulator > ImageHeight) {
		    Accumulator -= ImageHeight;
		    StartX += StepX;
		}
		if (Direction < 0) Direction = 0;
		if (Direction > ImageWidth) Direction = ImageWidth;
	    }
	}
    }

    if (EGifCloseFile(GifFile, &ErrorCode) == GIF_ERROR)
    {
	PrintGifError(ErrorCode);
	exit(EXIT_FAILURE);
    }

    return 0;
}
Beispiel #21
0
/******************************************************************************
 Main sequence
******************************************************************************/
int main(int argc, char **argv)
{
    GifFileType *GifFileIn = NULL, *GifFileOut = NULL;
    GifRecordType RecordType;
    int CodeSize, ExtCode, ErrorCode;
    GifByteType *CodeBlock, *Extension;

    /*
     * Command-line processing goes here.
     */

    /* Use stdin as input (note this also read screen descriptor in: */
    if ((GifFileIn = DGifOpenFileHandle(0, &ErrorCode)) == NULL) {
	PrintGifError(ErrorCode);
	exit(EXIT_FAILURE);
    }

    /* Use the stdout as output: */
    if ((GifFileOut = EGifOpenFileHandle(1, &ErrorCode)) == NULL) {
	PrintGifError(ErrorCode);
	exit(EXIT_FAILURE);
    }

    /* And dump out its screen information: */
    if (EGifPutScreenDesc(GifFileOut,
	GifFileIn->SWidth, GifFileIn->SHeight,
	GifFileIn->SColorResolution, GifFileIn->SBackGroundColor,
	GifFileIn->SColorMap) == GIF_ERROR)
	QuitGifError(GifFileIn, GifFileOut);

    /* Scan the content of the input GIF file and load the image(s) in: */
    do {
	if (DGifGetRecordType(GifFileIn, &RecordType) == GIF_ERROR)
	    QuitGifError(GifFileIn, GifFileOut);

	switch (RecordType) {
	    case IMAGE_DESC_RECORD_TYPE:
		if (DGifGetImageDesc(GifFileIn) == GIF_ERROR)
		    QuitGifError(GifFileIn, GifFileOut);
		/* Put image descriptor to out file: */
		if (EGifPutImageDesc(GifFileOut,
		    GifFileIn->Image.Left, GifFileIn->Image.Top,
		    GifFileIn->Image.Width, GifFileIn->Image.Height,
		    GifFileIn->Image.Interlace,
		    GifFileIn->Image.ColorMap) == GIF_ERROR)
		    QuitGifError(GifFileIn, GifFileOut);

		/* Now read image itself in decoded form as we dont really   */
		/* care what we have there, and this is much faster.	     */
		if (DGifGetCode(GifFileIn, &CodeSize, &CodeBlock) == GIF_ERROR ||
		    EGifPutCode(GifFileOut, CodeSize, CodeBlock) == GIF_ERROR)
		    QuitGifError(GifFileIn, GifFileOut);
		while (CodeBlock != NULL) {
		    if (DGifGetCodeNext(GifFileIn, &CodeBlock) == GIF_ERROR ||
			EGifPutCodeNext(GifFileOut, CodeBlock) == GIF_ERROR)
		    QuitGifError(GifFileIn, GifFileOut);
		}
		break;
	    case EXTENSION_RECORD_TYPE:
		/* pass through extension records */
		if (DGifGetExtension(GifFileIn, &ExtCode, &Extension) == GIF_ERROR)
		    QuitGifError(GifFileIn, GifFileOut);
		if (EGifPutExtensionLeader(GifFileOut, ExtCode) == GIF_ERROR)
		    QuitGifError(GifFileIn, GifFileOut);
		if (EGifPutExtensionBlock(GifFileOut, 
					  Extension[0],
					  Extension + 1) == GIF_ERROR)
		    QuitGifError(GifFileIn, GifFileOut);
		while (Extension != NULL) {
		    if (DGifGetExtensionNext(GifFileIn, &Extension)==GIF_ERROR)
			QuitGifError(GifFileIn, GifFileOut);
		    if (Extension != NULL)
			if (EGifPutExtensionBlock(GifFileOut, 
						  Extension[0],
						  Extension + 1) == GIF_ERROR)
			    QuitGifError(GifFileIn, GifFileOut);
		}
		if (EGifPutExtensionTrailer(GifFileOut) == GIF_ERROR)
		    QuitGifError(GifFileIn, GifFileOut);
		break;
	    case TERMINATE_RECORD_TYPE:
		break;
	    default:	     /* Should be trapped by DGifGetRecordType */
		break;
	}
    }
    while (RecordType != TERMINATE_RECORD_TYPE);

    if (DGifCloseFile(GifFileIn, &ErrorCode) == GIF_ERROR)
    {
	PrintGifError(ErrorCode);
	if (GifFileIn != NULL) {
	    EGifCloseFile(GifFileIn, NULL);
	}
	exit(EXIT_FAILURE);
    }
    if (EGifCloseFile(GifFileOut, &ErrorCode) == GIF_ERROR)
    {
	PrintGifError(ErrorCode);
	if (GifFileOut != NULL) {
	    EGifCloseFile(GifFileOut, NULL);
	}
	exit(EXIT_FAILURE);
    }

    return 0;
}
bool ParupaintPanvasInputOutput::exportGIF(ParupaintPanvas * panvas, const QString & filename, QString & errorStr)
{
	Q_ASSERT(panvas);
	if(filename.isEmpty())
		return (errorStr = "Enter a filename to save to.").isEmpty();

#ifndef PARUPAINT_NOGIF
	int error = 0;
	GifFileType * gif = EGifOpenFileName(filename.toStdString().c_str(), false, &error);

	foreach(const QImage & image, panvas->mergedImageFrames(true)){

		error = 0;
		bool alpha = false;
		QImage toWrite = convertToIndexed8(image, &alpha);

		QVector<QRgb> colorTable = toWrite.colorTable();
		ColorMapObject cmap;

		int numColors = 1 << BitSize(toWrite.colorCount());
		numColors = 256;

		cmap.ColorCount = numColors;
		cmap.BitsPerPixel = 8;	/// @todo based on numColors (or not? we did ask for Format_Indexed8, so the data is always 8-bit, right?)
		GifColorType* colorValues = (GifColorType*)malloc(cmap.ColorCount * sizeof(GifColorType));
		cmap.Colors = colorValues;
		int c = 0;
		for(; c < toWrite.colorCount(); ++c)
		{
			//qDebug("color %d has %02X%02X%02X", c, qRed(colorTable[c]), qGreen(colorTable[c]), qBlue(colorTable[c]));
			colorValues[c].Red = qRed(colorTable[c]);
			colorValues[c].Green = qGreen(colorTable[c]);
			colorValues[c].Blue = qBlue(colorTable[c]);
		}
		// In case we had an actual number of colors that's not a power of 2,
		// fill the rest with something (black perhaps).
		for (; c < numColors; ++c)
		{
			colorValues[c].Red = 0;
			colorValues[c].Green = 0;
			colorValues[c].Blue = 0;
		}

		/// @todo how to specify which version, or decide based on features in use
		// Because of this call, libgif is not re-entrant
		EGifSetGifVersion(gif, true);

		if ((error = EGifPutScreenDesc(gif, toWrite.width(), toWrite.height(), numColors, 0, &cmap)) == GIF_ERROR)
			qCritical("EGifPutScreenDesc returned error %d", error);

		int fps = (100.0/panvas->frameRate());

		char flags = 1 << 3;
		if(alpha) flags |= 1;

		char graphics_ext[] = {
			flags,
			(char)(fps % 256), (char)(fps / 256),
			(char)(alpha ? 0x00 : 0xff)
		};
		EGifPutExtension(gif, GRAPHICS_EXT_FUNC_CODE, 4, graphics_ext);

		if ((error = EGifPutImageDesc(gif, 0, 0, toWrite.width(), toWrite.height(), 0, &cmap)) == GIF_ERROR)
			qCritical("EGifPutImageDesc returned error %d", error);

		int lc = toWrite.height();
		int llen = toWrite.bytesPerLine();
		for (int l = 0; l < lc; ++l) {
			uchar* line = toWrite.scanLine(l);
			if ((error = EGifPutLine(gif, (GifPixelType*)line, llen)) == GIF_ERROR) {
				qCritical("EGifPutLine returned error %d", error);
			}
		}

		if(true){
			// loop forever
			unsigned char loopblock[3] = {1, 0, 0};
			EGifPutExtensionLeader(gif, APPLICATION_EXT_FUNC_CODE);
			EGifPutExtensionBlock(gif, 11, "NETSCAPE2.0");
			EGifPutExtensionBlock(gif, 3, loopblock);
			EGifPutExtensionTrailer(gif);
		}
	}

	EGifCloseFile(gif, &error);
	return true;
#endif
	return (errorStr = "GIF export not available.").isEmpty();
}
Beispiel #23
0
int 
write_gif(const char *filename, int width, int height, char *rgb)
{
    int i;
    int colormap_size = 256;
    GifByteType *red, *green, *blue, *buffer, *ptr;
    GifFileType *outfile;
    ColorMapObject *colormap;

    red = malloc(width * height * sizeof(GifByteType));
    green = malloc(width * height * sizeof(GifByteType));
    blue = malloc(width * height * sizeof(GifByteType));
    buffer = malloc(width * height * sizeof(GifByteType));

    if (red == NULL || green == NULL || blue == NULL || buffer == NULL)
    {
        fprintf(stderr, "Can't allocate memory for GIF file.\n");
        return(0);
    }

    colormap = MakeMapObject(colormap_size, NULL);

    for (i = 0; i < width * height; i++)
    {
        red[i]   = (GifByteType) rgb[3*i  ];
        green[i] = (GifByteType) rgb[3*i+1];
        blue[i]  = (GifByteType) rgb[3*i+2];
    }
  
    if (QuantizeBuffer(width, height, &colormap_size, red, green, blue,   
                       buffer, colormap->Colors) == GIF_ERROR)
    {
        PrintGifError();
        return(0);
    }

    free(red);
    free(green);
    free(blue);

    outfile = EGifOpenFileName((char *) filename, FALSE);
    if (outfile == NULL)
    {
        PrintGifError();
        return(0);
    }

    if (EGifPutScreenDesc(outfile, width, height, colormap_size, 0, colormap)
        == GIF_ERROR)
    {
        PrintGifError();
        return(0);
    }

    if (EGifPutImageDesc(outfile, 0, 0, width, height, FALSE, NULL)
        == GIF_ERROR)
    {
        PrintGifError();
        return(0);
    }

    ptr = buffer;
    for (i = 0; i < height; i++)
    {
        if (EGifPutLine(outfile, ptr, width) == GIF_ERROR)
        {
            PrintGifError();
            return(0);
        }
        ptr += width;
    }

    EGifSpew(outfile);

    if (EGifCloseFile(outfile) == GIF_ERROR) 
        PrintGifError();

    free(buffer);

    return(1);
}
Beispiel #24
0
/******************************************************************************
* Interpret the command line and scan the given GIF file.		      *
******************************************************************************/
int main(int argc, char **argv)
{
    int	i, j, Error, NumFiles, ExtCode, Row, Col, Width, Height,
	DarkestColor = 0, ColorIntens = 10000, HelpFlag = FALSE;
    GifRecordType RecordType;
    GifByteType *Extension;
    char **FileName = NULL;
    GifRowType LineBuffer;
    ColorMapObject *ColorMap;
    GifFileType *GifFileIn = NULL, *GifFileOut = NULL;

    if ((Error = GAGetArgs(argc, argv, CtrlStr, &GifQuietPrint, &HelpFlag,
		&NumFiles, &FileName)) != FALSE ||
		(NumFiles > 1 && !HelpFlag)) {
	if (Error)
	    GAPrintErrMsg(Error);
	else if (NumFiles > 1)
	    GIF_MESSAGE("Error in command line parsing - one GIF file please.");
	GAPrintHowTo(CtrlStr);
	exit(EXIT_FAILURE);
    }

    if (HelpFlag) {
	fprintf(stderr, VersionStr);
	GAPrintHowTo(CtrlStr);
	exit(EXIT_SUCCESS);
    }

    if (NumFiles == 1) {
	if ((GifFileIn = DGifOpenFileName(*FileName)) == NULL)
	    QuitGifError(GifFileIn, GifFileOut);
    }
    else {
	/* Use the stdin instead: */
	if ((GifFileIn = DGifOpenFileHandle(0)) == NULL)
	    QuitGifError(GifFileIn, GifFileOut);
    }

    /* Open stdout for the output file: */
    if ((GifFileOut = EGifOpenFileHandle(1)) == NULL)
	QuitGifError(GifFileIn, GifFileOut);

    /* Dump out exactly same screen information: */
    if (EGifPutScreenDesc(GifFileOut,
	GifFileIn->SWidth, GifFileIn->SHeight,
	GifFileIn->SColorResolution, GifFileIn->SBackGroundColor,
	GifFileIn->SColorMap) == GIF_ERROR)
	QuitGifError(GifFileIn, GifFileOut);

    if ((LineBuffer = (GifRowType) malloc(GifFileIn->SWidth)) == NULL)
	GIF_EXIT("Failed to allocate memory required, aborted.");

    /* Scan the content of the GIF file and load the image(s) in: */
    do {
	if (DGifGetRecordType(GifFileIn, &RecordType) == GIF_ERROR)
	    QuitGifError(GifFileIn, GifFileOut);

	switch (RecordType) {
	    case IMAGE_DESC_RECORD_TYPE:
		if (DGifGetImageDesc(GifFileIn) == GIF_ERROR)
		    QuitGifError(GifFileIn, GifFileOut);
		if (GifFileIn->Image.Interlace)
		    GIF_EXIT("Cannt fix interlaced images.");

		Row = GifFileIn->Image.Top; /* Image Position relative to Screen. */
		Col = GifFileIn->Image.Left;
		Width = GifFileIn->Image.Width;
		Height = GifFileIn->Image.Height;
		GifQprintf("\n%s: Image %d at (%d, %d) [%dx%d]:     ",
		    PROGRAM_NAME, ++ImageNum, Col, Row, Width, Height);

		/* Put the image descriptor to out file: */
		if (EGifPutImageDesc(GifFileOut, Col, Row, Width, Height,
		    FALSE, GifFileIn->Image.ColorMap) == GIF_ERROR)
		    QuitGifError(GifFileIn, GifFileOut);

		/* Find the darkest color in color map to use as a filler. */
		ColorMap = (GifFileIn->Image.ColorMap ? GifFileIn->Image.ColorMap :
						     GifFileIn->SColorMap);
		for (i = 0; i < ColorMap->ColorCount; i++) {
		    j = ((int) ColorMap->Colors[i].Red) * 30 +
			((int) ColorMap->Colors[i].Green) * 59 +
			((int) ColorMap->Colors[i].Blue) * 11;
		    if (j < ColorIntens) {
			ColorIntens = j;
			DarkestColor = i;
		    }
		}

		/* Load the image, and dump it. */
		for (i = 0; i < Height; i++) {
		    GifQprintf("\b\b\b\b%-4d", i);
		    if (DGifGetLine(GifFileIn, LineBuffer, Width)
			== GIF_ERROR) break;
		    if (EGifPutLine(GifFileOut, LineBuffer, Width)
			== GIF_ERROR) QuitGifError(GifFileIn, GifFileOut);
		}

		if (i < Height) {
		    fprintf(stderr, "\nFollowing error occured (and ignored):");
		    PrintGifError();

		    /* Fill in with the darkest color in color map. */
		    for (j = 0; j < Width; j++)
			LineBuffer[j] = DarkestColor;
		    for (; i < Height; i++)
			if (EGifPutLine(GifFileOut, LineBuffer, Width)
			    == GIF_ERROR) QuitGifError(GifFileIn, GifFileOut);
		}
		break;
	    case EXTENSION_RECORD_TYPE:
		/* Skip any extension blocks in file: */
		if (DGifGetExtension(GifFileIn, &ExtCode, &Extension) == GIF_ERROR)
		    QuitGifError(GifFileIn, GifFileOut);
		if (Extension && EGifPutExtension(GifFileOut, ExtCode,
					Extension[0], Extension) == GIF_ERROR)
		    QuitGifError(GifFileIn, GifFileOut);

		/* No support to more than one extension blocks, so discard: */
		while (Extension != NULL) {
		    if (DGifGetExtensionNext(GifFileIn, &Extension) == GIF_ERROR)
			QuitGifError(GifFileIn, GifFileOut);
		}
		break;
	    case TERMINATE_RECORD_TYPE:
		break;
	    default:		    /* Should be traps by DGifGetRecordType. */
		break;
	}
    }
    while (RecordType != TERMINATE_RECORD_TYPE);

    if (DGifCloseFile(GifFileIn) == GIF_ERROR)
	QuitGifError(GifFileIn, GifFileOut);
    if (EGifCloseFile(GifFileOut) == GIF_ERROR)
	QuitGifError(GifFileIn, GifFileOut);

    return 0;
}
Beispiel #25
0
bool Graphics::toGif(QImage &img, QString &path)
{
    int errcode;

    if(QFile(path).exists()) // Remove old file
        QFile::remove(path);

    GifFileType *t = EGifOpenFileName(path.toStdString().c_str(), true, &errcode);

    if(!t)
    {
        EGifCloseFile(t, &errcode);
        std::cout << "Can't open\n";
        return false;
    }

    EGifSetGifVersion(t, true);
    std::vector<GifColorType>colorArr;
    colorArr.resize(256);
    ColorMapObject *cmo = GifMakeMapObject(256, colorArr.data());
    bool unfinished = false;
    QImage tarQImg(img.width(), img.height(), QImage::Format_Indexed8);
    QVector<QRgb> table;

    for(int y = 0; y < img.height(); y++)
    {
        for(int x = 0; x < img.width(); x++)
        {
            if(table.size() >= 256)
            {
                unfinished = true;
                break;
            }

            QRgb pix;

            if(!table.contains(pix = img.pixel(x, y)))
            {
                table.push_back(pix);
                tarQImg.setColor(tarQImg.colorCount(), pix);
            }

            tarQImg.setPixel(x, y, static_cast<uint>(table.indexOf(pix)));
        }

        if(table.size() >= 256)
        {
            unfinished = true;
            break;
        }
    }

    if(unfinished)
    {
        GifFreeMapObject(cmo);
        EGifCloseFile(t, &errcode);
        std::cout << "Unfinished\n";
        return false;
    }

    for(int l = tarQImg.colorCount(); l < 256; l++)
        tarQImg.setColor(l, 0);

    if(tarQImg.colorTable().size() != 256)
    {
        GifFreeMapObject(cmo);
        EGifCloseFile(t, &errcode);
        std::cout << "A lot of colors\n";
        return false;
    }

    std::vector<QRgb> clTab = tarQImg.colorTable().toStdVector();

    for(size_t i = 0; i < 255; i++)
    {
        QRgb rgb = clTab[i];
        colorArr[i].Red     = static_cast<unsigned char>(qRed(rgb));
        colorArr[i].Green   = static_cast<unsigned char>(qGreen(rgb));
        colorArr[i].Blue    = static_cast<unsigned char>(qBlue(rgb));
    }

    cmo->Colors = colorArr.data();
    errcode = EGifPutScreenDesc(t, img.width(), img.height(), 256, 0, cmo);

    if(errcode != GIF_OK)
    {
        GifFreeMapObject(cmo);
        EGifCloseFile(t, &errcode);
        std::cout << "EGifPutScreenDesc error 1\n";
        return false;
    }

    errcode = EGifPutImageDesc(t, 0, 0, img.width(), img.height(), false, 0);

    if(errcode != GIF_OK)
    {
        GifFreeMapObject(cmo);
        EGifCloseFile(t, &errcode);
        std::cout << "EGifPutImageDesc error 2\n";
        return false;
    }

    //gen byte array
    GifByteType *byteArr = tarQImg.bits();

    for(int h = 0; h < tarQImg.height(); h++)
    {
        errcode = EGifPutLine(t, byteArr, tarQImg.width());

        if(errcode != GIF_OK)
        {
            GifFreeMapObject(cmo);
            EGifCloseFile(t, &errcode);
            std::cout << "EGifPutLine error 3\n";
            return false;
        }

        byteArr += tarQImg.width();
        byteArr += ((tarQImg.width() % 4) != 0 ? 4 - (tarQImg.width() % 4) : 0);
    }

    GifFreeMapObject(cmo);
    EGifCloseFile(t, &errcode);
    return true;
}
Beispiel #26
0
/******************************************************************************
* Perform the assembly operation - take few input files into one output.      *
******************************************************************************/
static void DoAssembly(int NumFiles, char **FileNames)
{
    int	i, ExtCode, CodeSize;
    GifRecordType RecordType;
    GifByteType *Extension, *CodeBlock;
    GifFileType *GifFileIn = NULL, *GifFileOut = NULL;

    /* Open stdout for the output file: */
    if ((GifFileOut = EGifOpenFileHandle(1)) == NULL)
	QuitGifError(GifFileIn, GifFileOut);

    /* Scan the content of the GIF file and load the image(s) in: */
    for (i = 0; i < NumFiles; i++) {
	if ((GifFileIn = DGifOpenFileName(FileNames[i])) == NULL)
	    QuitGifError(GifFileIn, GifFileOut);

	/* And dump out screen descriptor iff its first image.	*/
	if (i == 0)
	    if (EGifPutScreenDesc(GifFileOut,
		GifFileIn -> SWidth, GifFileIn -> SHeight,
		GifFileIn -> SColorResolution, GifFileIn -> SBackGroundColor,
		GifFileIn -> SBitsPerPixel, GifFileIn -> SColorMap) == GIF_ERROR)
		QuitGifError(GifFileIn, GifFileOut);

	do {
	    if (DGifGetRecordType(GifFileIn, &RecordType) == GIF_ERROR)
		QuitGifError(GifFileIn, GifFileOut);

	    switch (RecordType) {
		case IMAGE_DESC_RECORD_TYPE:
		    if (DGifGetImageDesc(GifFileIn) == GIF_ERROR)
			QuitGifError(GifFileIn, GifFileOut);
		    /* Put image descriptor to out file: */
		    if (EGifPutImageDesc(GifFileOut,
			GifFileIn -> ILeft, GifFileIn -> ITop,
			GifFileIn -> IWidth, GifFileIn -> IHeight,
			GifFileIn -> IInterlace, GifFileIn -> IBitsPerPixel,
			GifFileIn -> IColorMap) == GIF_ERROR)
			QuitGifError(GifFileIn, GifFileOut);

		    /* Now read image itself in decoded form as we dont      */
		    /* dont care what is there, and this is much faster.     */
		    if (DGifGetCode(GifFileIn, &CodeSize, &CodeBlock) == GIF_ERROR
		     || EGifPutCode(GifFileOut, CodeSize, CodeBlock) == GIF_ERROR)
			QuitGifError(GifFileIn, GifFileOut);
		    while (CodeBlock != NULL)
			if (DGifGetCodeNext(GifFileIn, &CodeBlock) == GIF_ERROR ||
			    EGifPutCodeNext(GifFileOut, CodeBlock) == GIF_ERROR)
			    QuitGifError(GifFileIn, GifFileOut);
		    break;
		case EXTENSION_RECORD_TYPE:
		    /* Skip any extension blocks in file: */
		    if (DGifGetExtension(GifFileIn, &ExtCode, &Extension)
			== GIF_ERROR)
			QuitGifError(GifFileIn, GifFileOut);
		    if (EGifPutExtension(GifFileOut, ExtCode, Extension[0],
						       Extension) == GIF_ERROR)
			QuitGifError(GifFileIn, GifFileOut);

		    /* No support to more than one extension blocks, discard.*/
		    while (Extension != NULL)
			if (DGifGetExtensionNext(GifFileIn, &Extension)
			    == GIF_ERROR)
				QuitGifError(GifFileIn, GifFileOut);
		    break;
		case TERMINATE_RECORD_TYPE:
		    break;
		default:	    /* Should be traps by DGifGetRecordType. */
		    break;
	    }
	}
	while (RecordType != TERMINATE_RECORD_TYPE);

	if (DGifCloseFile(GifFileIn) == GIF_ERROR)
	    QuitGifError(GifFileIn, GifFileOut);
    }

    if (EGifCloseFile(GifFileOut) == GIF_ERROR)
	QuitGifError(GifFileIn, GifFileOut);
}
Beispiel #27
0
/******************************************************************************
* Interpret the command line and scan the given GIF file.		      *
******************************************************************************/
int main(int argc, char **argv)
{
    int	Error, NumFiles, ExtCode, CodeSize, ImageNum = 0,
	ImageNFlag = FALSE, ImageN, HelpFlag = FALSE, HasGIFOutput;
    GifRecordType RecordType;
    GifByteType *Extension, *CodeBlock;
    char **FileName = NULL, *ColorFileName, *TranslateFileName;
    GifFileType *GifFileIn = NULL, *GifFileOut = NULL;

    if ((Error = GAGetArgs(argc, argv, CtrlStr, &GifQuietPrint, &SaveFlag, 
		&TranslateFlag, &TranslateFileName,
		&LoadFlag, &ColorFileName,
		&GammaFlag, &Gamma, &ImageNFlag, &ImageN,
		&HelpFlag, &NumFiles, &FileName)) != FALSE ||
		(NumFiles > 1 && !HelpFlag)) {
	if (Error)
	    GAPrintErrMsg(Error);
	else if (NumFiles > 1)
	    GIF_MESSAGE("Error in command line parsing - one GIF file please.");
	GAPrintHowTo(CtrlStr);
	exit(EXIT_FAILURE);
    }

    if (HelpFlag) {
	fprintf(stderr, VersionStr);
	GAPrintHowTo(CtrlStr);
	exit(EXIT_SUCCESS);
    }

    if (SaveFlag + LoadFlag + GammaFlag + TranslateFlag > 1)
	GIF_EXIT("Can not handle more than one of -s -l, -t, or -g at the same time.");

    if (NumFiles == 1) {
	if ((GifFileIn = DGifOpenFileName(*FileName)) == NULL)
	    QuitGifError(GifFileIn, GifFileOut);
    }
    else {
	/* Use stdin instead: */
	if ((GifFileIn = DGifOpenFileHandle(0)) == NULL)
	    QuitGifError(GifFileIn, GifFileOut);
    }

    if (SaveFlag) {
	/* We are dumping out the color map as text file to stdout: */
	ColorFile = stdout;
    }
    else {
	if (TranslateFlag) {
	    /* We are loading new color map from specified file: */
	    if ((TranslateFile = fopen(TranslateFileName, "rt")) == NULL)
		GIF_EXIT("Failed to open specified color translation file.");
	}

	if (LoadFlag) {
	    /* We are loading new color map from specified file: */
	    if ((ColorFile = fopen(ColorFileName, "rt")) == NULL)
		GIF_EXIT("Failed to open specified color map file.");
	}
    }

    if ((HasGIFOutput = (LoadFlag || TranslateFlag || GammaFlag)) != 0) {
	/* Open stdout for GIF output file: */
	if ((GifFileOut = EGifOpenFileHandle(1)) == NULL)
	    QuitGifError(GifFileIn, GifFileOut);
    }

    if (!ImageNFlag) {
	/* We are suppose to modify the screen color map, so do it: */
	GifFileIn->SColorMap = ModifyColorMap(GifFileIn->SColorMap);
	if (!HasGIFOutput) {
	    /* We can quit here, as we have the color map: */
	    if (GifFileIn != NULL) DGifCloseFile(GifFileIn);
	    fclose(ColorFile);
	    exit(EXIT_SUCCESS);
	}
    }
    /* And dump out its new possible repositioned screen information: */
    if (HasGIFOutput)
	if (EGifPutScreenDesc(GifFileOut,
	    GifFileIn->SWidth, GifFileIn->SHeight,
	    GifFileIn->SColorResolution, GifFileIn->SBackGroundColor,
	    GifFileIn->SColorMap) == GIF_ERROR)
	    QuitGifError(GifFileIn, GifFileOut);

    /* Scan the content of the GIF file and load the image(s) in: */
    do {
	if (DGifGetRecordType(GifFileIn, &RecordType) == GIF_ERROR)
	    QuitGifError(GifFileIn, GifFileOut);

	switch (RecordType) {
	    case IMAGE_DESC_RECORD_TYPE:
		if (DGifGetImageDesc(GifFileIn) == GIF_ERROR)
		    QuitGifError(GifFileIn, GifFileOut);
		if ((++ImageNum == ImageN) && ImageNFlag) {
		    /* We are suppose to modify this image color map, do it: */
		    GifFileIn->SColorMap =ModifyColorMap(GifFileIn->SColorMap);
		    if (!HasGIFOutput) {
			/* We can quit here, as we have the color map: */
			if (GifFileIn != NULL) DGifCloseFile(GifFileIn);
			fclose(ColorFile);
			exit(EXIT_SUCCESS);
		    }
		}
		if (HasGIFOutput)
		    if (EGifPutImageDesc(GifFileOut,
			GifFileIn->Image.Left, GifFileIn->Image.Top,
			GifFileIn->Image.Width, GifFileIn->Image.Height,
			GifFileIn->Image.Interlace,
			GifFileIn->Image.ColorMap) == GIF_ERROR)
			QuitGifError(GifFileIn, GifFileOut);

		if (!TranslateFlag || (ImageNFlag && (ImageN != ImageNum)))
		{
		    /* Now read image itself in decoded form as we don't */
		    /* really care what we have there, and this is much  */
		    /* faster.						 */
		    if (DGifGetCode(GifFileIn, &CodeSize, &CodeBlock) == GIF_ERROR)
			QuitGifError(GifFileIn, GifFileOut);
		    if (HasGIFOutput)
			if (EGifPutCode(GifFileOut, CodeSize, CodeBlock) == GIF_ERROR)
			    QuitGifError(GifFileIn, GifFileOut);
		    while (CodeBlock != NULL) {
			if (DGifGetCodeNext(GifFileIn, &CodeBlock) == GIF_ERROR)
			    QuitGifError(GifFileIn, GifFileOut);
			if (HasGIFOutput)
			    if (EGifPutCodeNext(GifFileOut, CodeBlock) == GIF_ERROR)
				QuitGifError(GifFileIn, GifFileOut);
		    }
		}
		else	/* we need to mung pixels intices */
		{
		    int	i;
		    register GifPixelType *cp;

		    GifPixelType *Line
			= (GifPixelType *) malloc(GifFileIn->Image.Width *
						  sizeof(GifPixelType));
		    for (i = 0; i < GifFileIn->Image.Height; i++) {
			if (DGifGetLine(GifFileIn, Line,GifFileIn->Image.Width)
			    == GIF_ERROR) {
			    QuitGifError(GifFileIn, GifFileOut);
			}

			/* translation step goes here */
			for (cp = Line; cp < Line+GifFileIn->Image.Width; cp++)
			    *cp = Translation[*cp];

			if (EGifPutLine(GifFileOut,
					Line, GifFileIn->Image.Width)
			    == GIF_ERROR) {
			    QuitGifError(GifFileIn, GifFileOut);
			}
		    }
		    free((char *) Line);
		}
		break;
	    case EXTENSION_RECORD_TYPE:
		/* Skip any extension blocks in file: */
		if (DGifGetExtension(GifFileIn, &ExtCode, &Extension) == GIF_ERROR)
		    QuitGifError(GifFileIn, GifFileOut);
		if (HasGIFOutput)
		    if (EGifPutExtension(GifFileOut, ExtCode, Extension[0],
							Extension) == GIF_ERROR)
			QuitGifError(GifFileIn, GifFileOut);

		/* No support to more than one extension blocks, so discard: */
		while (Extension != NULL) {
		    if (DGifGetExtensionNext(GifFileIn, &Extension) == GIF_ERROR)
			QuitGifError(GifFileIn, GifFileOut);
		}
		break;
	    case TERMINATE_RECORD_TYPE:
		break;
	    default:		    /* Should be traps by DGifGetRecordType. */
		break;
	}
    }
    while (RecordType != TERMINATE_RECORD_TYPE);

    if (DGifCloseFile(GifFileIn) == GIF_ERROR)
	QuitGifError(GifFileIn, GifFileOut);
    if (HasGIFOutput)
	if (EGifCloseFile(GifFileOut) == GIF_ERROR)
	    QuitGifError(GifFileIn, GifFileOut);

    return 0;
}
Beispiel #28
0
bool MCImageEncodeGIF(MCImageIndexedBitmap *p_indexed, IO_handle p_stream, uindex_t &r_bytes_written)
{
	bool t_success = true;

	int32_t t_transparent = -1;
	uindex_t t_palette_size;
	uindex_t t_depth;


	t_depth = GifBitSize(p_indexed->palette_size);
	// GIF requires palette size to be 2^depth
	t_palette_size = 1 << t_depth;

	int t_err = 0;
	GifFileType *t_gif = nil;
	ColorMapObject *t_colormap = nil;
	
	MCGIFWriteContext t_context;
	t_context.stream = p_stream;
	t_context.byte_count = 0;

	t_success = nil != (t_gif = EGifOpen(&t_context, gif_writeFunc, &t_err));

	if (t_success)
		t_success = nil != (t_colormap = GifMakeMapObject(t_palette_size, nil));

	if (t_success)
	{
		for (uindex_t i = 0; i < p_indexed->palette_size; i++)
		{
			t_colormap->Colors[i].Red = p_indexed->palette[i].red;
			t_colormap->Colors[i].Green = p_indexed->palette[i].green;
			t_colormap->Colors[i].Blue = p_indexed->palette[i].blue;
		}
		for (uindex_t i = p_indexed->palette_size; i < t_palette_size; i++)
		{
			t_colormap->Colors[i].Red =
				t_colormap->Colors[i].Green =
				t_colormap->Colors[i].Blue = 0;
		}

		if (MCImageIndexedBitmapHasTransparency(p_indexed))
		{
			t_transparent = p_indexed->transparent_index;
			t_colormap->Colors[t_transparent].Red =
				t_colormap->Colors[t_transparent].Green = 
				t_colormap->Colors[t_transparent].Blue = 0xFF;
		}

		t_success = GIF_OK == EGifPutScreenDesc(t_gif, p_indexed->width, p_indexed->height, t_depth, 0, t_colormap);
	}

	if (t_success)
	{
		if (t_transparent != -1)
		{
			GraphicsControlBlock t_gcb;
			MCMemoryClear(&t_gcb, sizeof(t_gcb));
			t_gcb.TransparentColor = t_transparent;

			GifByteType t_extension[4];

			uindex_t t_extension_size;
			t_extension_size = EGifGCBToExtension(&t_gcb, t_extension);

			// Should always be 4 bytes
			MCAssert(t_extension_size == sizeof(t_extension));

			t_success = GIF_OK == EGifPutExtension(t_gif, GRAPHICS_EXT_FUNC_CODE, sizeof(t_extension), t_extension);
		}
	}

	if (t_success)
		t_success = GIF_OK == EGifPutImageDesc(t_gif, 0, 0, p_indexed->width, p_indexed->height, false, nil);

	for (uindex_t y = 0; t_success && y < p_indexed->height; y++)
		t_success = GIF_OK == EGifPutLine(t_gif, (uint8_t*)p_indexed->data + y * p_indexed->stride, p_indexed->width);

	int t_error_code;
	if (GIF_ERROR == EGifCloseFile(t_gif, &t_error_code))
		t_success = false;

	GifFreeMapObject(t_colormap);

	if (t_success)
		r_bytes_written = t_context.byte_count;

	return t_success;
}
Beispiel #29
0
/*!
 * \brief   pixToGif()
 *
 * \param[in]    pix 1, 2, 4, 8, 16 or 32 bpp
 * \param[in]    gif  opened gif stream
 * \return  0 if OK, 1 on error
 *
 * <pre>
 * Notes:
 *      (1) This encodes the pix to the gif stream. The stream is not
 *          closes by this function.
 *      (2) It is static to make this function private.
 * </pre>
 */
static l_int32
pixToGif(PIX *pix, GifFileType *gif)
{
char            *text;
l_int32          wpl, i, j, w, h, d, ncolor, rval, gval, bval;
l_int32          gif_ncolor = 0;
l_uint32        *data, *line;
PIX             *pixd;
PIXCMAP         *cmap;
ColorMapObject  *gif_cmap;
GifByteType     *gif_line;
#if (GIFLIB_MAJOR == 5 && GIFLIB_MINOR >= 1) || GIFLIB_MAJOR > 5
int              giferr;
#endif  /* 5.1 and beyond */

    PROCNAME("pixToGif");

    if (!pix)
        return ERROR_INT("pix not defined", procName, 1);
    if (!gif)
        return ERROR_INT("gif not defined", procName, 1);

    d = pixGetDepth(pix);
    if (d == 32) {
        pixd = pixConvertRGBToColormap(pix, 1);
    } else if (d > 1) {
        pixd = pixConvertTo8(pix, TRUE);
    } else {  /* d == 1; make sure there's a colormap */
        pixd = pixClone(pix);
        if (!pixGetColormap(pixd)) {
            cmap = pixcmapCreate(1);
            pixcmapAddColor(cmap, 255, 255, 255);
            pixcmapAddColor(cmap, 0, 0, 0);
            pixSetColormap(pixd, cmap);
        }
    }

    if (!pixd)
        return ERROR_INT("failed to convert image to indexed", procName, 1);
    d = pixGetDepth(pixd);

    if ((cmap = pixGetColormap(pixd)) == NULL) {
        pixDestroy(&pixd);
        return ERROR_INT("cmap is missing", procName, 1);
    }

        /* 'Round' the number of gif colors up to a power of 2 */
    ncolor = pixcmapGetCount(cmap);
    for (i = 0; i <= 8; i++) {
        if ((1 << i) >= ncolor) {
            gif_ncolor = (1 << i);
            break;
        }
    }
    if (gif_ncolor < 1) {
        pixDestroy(&pixd);
        return ERROR_INT("number of colors is invalid", procName, 1);
    }

        /* Save the cmap colors in a gif_cmap */
    if ((gif_cmap = GifMakeMapObject(gif_ncolor, NULL)) == NULL) {
        pixDestroy(&pixd);
        return ERROR_INT("failed to create GIF color map", procName, 1);
    }
    for (i = 0; i < gif_ncolor; i++) {
        rval = gval = bval = 0;
        if (ncolor > 0) {
            if (pixcmapGetColor(cmap, i, &rval, &gval, &bval) != 0) {
                pixDestroy(&pixd);
                GifFreeMapObject(gif_cmap);
                return ERROR_INT("failed to get color from color map",
                                 procName, 1);
            }
            ncolor--;
        }
        gif_cmap->Colors[i].Red = rval;
        gif_cmap->Colors[i].Green = gval;
        gif_cmap->Colors[i].Blue = bval;
    }

    pixGetDimensions(pixd, &w, &h, NULL);
    if (EGifPutScreenDesc(gif, w, h, gif_cmap->BitsPerPixel, 0, gif_cmap)
        != GIF_OK) {
        pixDestroy(&pixd);
        GifFreeMapObject(gif_cmap);
        return ERROR_INT("failed to write screen description", procName, 1);
    }
    GifFreeMapObject(gif_cmap); /* not needed after this point */

    if (EGifPutImageDesc(gif, 0, 0, w, h, FALSE, NULL) != GIF_OK) {
        pixDestroy(&pixd);
        return ERROR_INT("failed to image screen description", procName, 1);
    }

    data = pixGetData(pixd);
    wpl = pixGetWpl(pixd);
    if (d != 1 && d != 2 && d != 4 && d != 8) {
        pixDestroy(&pixd);
        return ERROR_INT("image depth is not in {1, 2, 4, 8}", procName, 1);
    }

    if ((gif_line = (GifByteType *)LEPT_CALLOC(sizeof(GifByteType), w))
        == NULL) {
        pixDestroy(&pixd);
        return ERROR_INT("mem alloc fail for data line", procName, 1);
    }

    for (i = 0; i < h; i++) {
        line = data + i * wpl;
            /* Gif's way of setting the raster line up for compression */
        for (j = 0; j < w; j++) {
            switch(d)
            {
            case 8:
                gif_line[j] = GET_DATA_BYTE(line, j);
                break;
            case 4:
                gif_line[j] = GET_DATA_QBIT(line, j);
                break;
            case 2:
                gif_line[j] = GET_DATA_DIBIT(line, j);
                break;
            case 1:
                gif_line[j] = GET_DATA_BIT(line, j);
                break;
            }
        }

            /* Compress and save the line */
        if (EGifPutLine(gif, gif_line, w) != GIF_OK) {
            LEPT_FREE(gif_line);
            pixDestroy(&pixd);
            return ERROR_INT("failed to write data line into GIF", procName, 1);
        }
    }

        /* Write a text comment.  This must be placed after writing the
         * data (!!)  Note that because libgif does not provide a function
         * for reading comments from file, you will need another way
         * to read comments. */
    if ((text = pixGetText(pix)) != NULL) {
        if (EGifPutComment(gif, text) != GIF_OK)
            L_WARNING("gif comment not written\n", procName);
    }

    LEPT_FREE(gif_line);
    pixDestroy(&pixd);
    return 0;
}
Beispiel #30
0
/******************************************************************************
* Interpret the command line and scan the given GIF file.		      *
******************************************************************************/
void main(int argc, char **argv)
{
    int	Error, NumFiles, ExtCode;
    GifRecordType RecordType;
    GifByteType *Extension;
    char **FileName = NULL;
    GifRowType *ImageBuffer;
    GifFileType *GifFileIn = NULL, *GifFileOut = NULL;

    if ((Error = GAGetArgs(argc, argv, CtrlStr, &GifQuitePrint,
		&InterlacedFlag, &SequencialFlag, &HelpFlag,
		&NumFiles, &FileName)) != FALSE ||
		(NumFiles > 1 && !HelpFlag)) {
	if (Error)
	    GAPrintErrMsg(Error);
	else if (NumFiles > 1)
	    GIF_MESSAGE("Error in command line parsing - one GIF file please.");
	GAPrintHowTo(CtrlStr);
	exit(1);
    }

    if (HelpFlag) {
	fprintf(stderr, VersionStr);
	GAPrintHowTo(CtrlStr);
	exit(0);
    }

    if (NumFiles == 1) {
	if ((GifFileIn = DGifOpenFileName(*FileName)) == NULL)
	    QuitGifError(GifFileIn, GifFileOut);
    }
    else {
	/* Use the stdin instead: */
	if ((GifFileIn = DGifOpenFileHandle(0)) == NULL)
	    QuitGifError(GifFileIn, GifFileOut);
    }

    /* Open stdout for the output file: */
    if ((GifFileOut = EGifOpenFileHandle(1)) == NULL)
	QuitGifError(GifFileIn, GifFileOut);

    /* And dump out exactly same screen information: */
    if (EGifPutScreenDesc(GifFileOut,
	GifFileIn -> SWidth, GifFileIn -> SHeight,
	GifFileIn -> SColorResolution, GifFileIn -> SBackGroundColor,
	GifFileIn -> SBitsPerPixel, GifFileIn -> SColorMap) == GIF_ERROR)
	QuitGifError(GifFileIn, GifFileOut);

    /* Scan the content of the GIF file and load the image(s) in: */
    do {
	if (DGifGetRecordType(GifFileIn, &RecordType) == GIF_ERROR)
	    QuitGifError(GifFileIn, GifFileOut);

	switch (RecordType) {
	    case IMAGE_DESC_RECORD_TYPE:
		if (DGifGetImageDesc(GifFileIn) == GIF_ERROR)
		    QuitGifError(GifFileIn, GifFileOut);

		/* Put the image descriptor to out file: */
		if (EGifPutImageDesc(GifFileOut,
		    GifFileIn -> ILeft, GifFileIn -> ITop,
		    GifFileIn -> IWidth, GifFileIn -> IHeight,
		    InterlacedFlag, GifFileIn -> IBitsPerPixel,
		    GifFileIn -> IColorMap) == GIF_ERROR)
		    QuitGifError(GifFileIn, GifFileOut);

		/* Load the image (either Interlaced or not), and dump it as */
		/* defined in GifFileOut -> IInterlaced.		     */
		if (LoadImage(GifFileIn, &ImageBuffer) == GIF_ERROR)
		    QuitGifError(GifFileIn, GifFileOut);
		if (DumpImage(GifFileOut, ImageBuffer) == GIF_ERROR)
		    QuitGifError(GifFileIn, GifFileOut);
		break;
	    case EXTENSION_RECORD_TYPE:
		/* Skip any extension blocks in file: */
		if (DGifGetExtension(GifFileIn, &ExtCode, &Extension) == GIF_ERROR)
		    QuitGifError(GifFileIn, GifFileOut);
		if (EGifPutExtension(GifFileOut, ExtCode, Extension[0],
							Extension) == GIF_ERROR)
		    QuitGifError(GifFileIn, GifFileOut);

		/* No support to more than one extension blocks, so discard: */
		while (Extension != NULL) {
		    if (DGifGetExtensionNext(GifFileIn, &Extension) == GIF_ERROR)
			QuitGifError(GifFileIn, GifFileOut);
		}
		break;
	    case TERMINATE_RECORD_TYPE:
		break;
	    default:		    /* Should be traps by DGifGetRecordType. */
		break;
	}
    }
    while (RecordType != TERMINATE_RECORD_TYPE);

    if (DGifCloseFile(GifFileIn) == GIF_ERROR)
	QuitGifError(GifFileIn, GifFileOut);
    if (EGifCloseFile(GifFileOut) == GIF_ERROR)
	QuitGifError(GifFileIn, GifFileOut);
}