C++ GifFreeMapObject函数代码示例

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本文整理汇总了C++中GifFreeMapObject函数的典型用法代码示例。如果您正苦于以下问题：C++ GifFreeMapObject函数的具体用法？C++ GifFreeMapObject怎么用？C++ GifFreeMapObject使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。

在下文中一共展示了GifFreeMapObject函数的18个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。

示例1: DGifGetScreenDesc

/******************************************************************************
 This routine should be called before any other DGif calls. Note that
 this routine is called automatically from DGif file open routines.
******************************************************************************/
int
DGifGetScreenDesc(GifFileType *GifFile)
{
    int BitsPerPixel;
    bool SortFlag;
    GifByteType Buf[3];
    GifFilePrivateType *Private = (GifFilePrivateType *)GifFile->Private;

    if (!IS_READABLE(Private)) {
        /* This file was NOT open for reading: */
        GifFile->Error = D_GIF_ERR_NOT_READABLE;
        return GIF_ERROR;
    }

    /* Put the screen descriptor into the file: */
    if (DGifGetWord(GifFile, &GifFile->SWidth) == GIF_ERROR ||
        DGifGetWord(GifFile, &GifFile->SHeight) == GIF_ERROR)
        return GIF_ERROR;

    if (READ(GifFile, Buf, 3) != 3) {
        GifFile->Error = D_GIF_ERR_READ_FAILED;
	GifFreeMapObject(GifFile->SColorMap);
	GifFile->SColorMap = NULL;
        return GIF_ERROR;
    }
    GifFile->SColorResolution = (((Buf[0] & 0x70) + 1) >> 4) + 1;
    SortFlag = (Buf[0] & 0x08) != 0;
    BitsPerPixel = (Buf[0] & 0x07) + 1;
    GifFile->SBackGroundColor = Buf[1];
    GifFile->AspectByte = Buf[2]; 
    if (Buf[0] & 0x80) {    /* Do we have global color map? */
	int i;

        GifFile->SColorMap = GifMakeMapObject(1 << BitsPerPixel, NULL);
        if (GifFile->SColorMap == NULL) {
            GifFile->Error = D_GIF_ERR_NOT_ENOUGH_MEM;
            return GIF_ERROR;
        }

        /* Get the global color map: */
	GifFile->SColorMap->SortFlag = SortFlag;
        for (i = 0; i < GifFile->SColorMap->ColorCount; i++) {
	    /* coverity[check_return] */
            if (READ(GifFile, Buf, 3) != 3) {
                GifFreeMapObject(GifFile->SColorMap);
                GifFile->SColorMap = NULL;
                GifFile->Error = D_GIF_ERR_READ_FAILED;
                return GIF_ERROR;
            }
            GifFile->SColorMap->Colors[i].Red = Buf[0];
            GifFile->SColorMap->Colors[i].Green = Buf[1];
            GifFile->SColorMap->Colors[i].Blue = Buf[2];
        }
    } else {
        GifFile->SColorMap = NULL;
    }

    return GIF_OK;
}

开发者ID:cdotstout，项目名称:rpi-rgb-led-matrix，代码行数:63，代码来源:dgif_lib.c

示例2: EGifCloseFile

/******************************************************************************
 This routine should be called last, to close the GIF file.
******************************************************************************/
int
EGifCloseFile(GifFileType *GifFile)
{
    GifByteType Buf;
    GifFilePrivateType *Private;
    FILE *File;

    if (GifFile == NULL)
        return GIF_ERROR;

    Private = (GifFilePrivateType *) GifFile->Private;
    if (Private == NULL)
	return GIF_ERROR;
    if (!IS_WRITEABLE(Private)) {
        /* This file was NOT open for writing: */
        GifFile->Error = E_GIF_ERR_NOT_WRITEABLE;
        return GIF_ERROR;
    }

    File = Private->File;

    Buf = TERMINATOR_INTRODUCER;
    InternalWrite(GifFile, &Buf, 1);

    if (GifFile->Image.ColorMap) {
        GifFreeMapObject(GifFile->Image.ColorMap);
        GifFile->Image.ColorMap = NULL;
    }
    if (GifFile->SColorMap) {
        GifFreeMapObject(GifFile->SColorMap);
        GifFile->SColorMap = NULL;
    }
    if (Private) {
        if (Private->HashTable) {
            free((char *) Private->HashTable);
        }
	    free((char *) Private);
    }

    if (File && fclose(File) != 0) {
        GifFile->Error = E_GIF_ERR_CLOSE_FAILED;
        return GIF_ERROR;
    }

    /* 
     * Without the #ifndef, we get spurious warnings because Coverity mistakenly
     * thinks the GIF structure is freed on an error return. 
     */
#ifndef __COVERITY__
    free(GifFile);
#endif /* __COVERITY__ */

    return GIF_OK;
}

开发者ID:jparishy，项目名称:LEGIFExporter，代码行数:57，代码来源:egif_lib.c

示例3: DGifCloseFile

/******************************************************************************
 This routine should be called last, to close the GIF file.
******************************************************************************/
int
DGifCloseFile(GifFileType *GifFile, int *ErrorCode)
{
    GifFilePrivateType *Private;

    if (GifFile == NULL || GifFile->Private == NULL)
        return GIF_ERROR;

    if (GifFile->Image.ColorMap) {
        GifFreeMapObject(GifFile->Image.ColorMap);
        GifFile->Image.ColorMap = NULL;
    }

    if (GifFile->SColorMap) {
        GifFreeMapObject(GifFile->SColorMap);
        GifFile->SColorMap = NULL;
    }

    if (GifFile->SavedImages) {
        GifFreeSavedImages(GifFile);
        GifFile->SavedImages = NULL;
    }

    GifFreeExtensions(&GifFile->ExtensionBlockCount, &GifFile->ExtensionBlocks);

    Private = (GifFilePrivateType *) GifFile->Private;

    if (!IS_READABLE(Private)) {
        /* This file was NOT open for reading: */
	if (ErrorCode != NULL)
	    *ErrorCode = D_GIF_ERR_NOT_READABLE;
	free((char *)GifFile->Private);
	free(GifFile);
        return GIF_ERROR;
    }

    if (Private->File && (fclose(Private->File) != 0)) {
	if (ErrorCode != NULL)
	    *ErrorCode = D_GIF_ERR_CLOSE_FAILED;
	free((char *)GifFile->Private);
	free(GifFile);
        return GIF_ERROR;
    }

    free((char *)GifFile->Private);
    free(GifFile);
    if (ErrorCode != NULL)
	*ErrorCode = D_GIF_SUCCEEDED;
    return GIF_OK;
}

开发者ID:1007650105，项目名称:aseprite，代码行数:53，代码来源:dgif_lib.c

示例4: DGifCloseFile

/******************************************************************************
 This routine should be called last, to close the GIF file.
******************************************************************************/
int
DGifCloseFile(GifFileType *GifFile)
{
    GifFilePrivateType *Private;

    if (GifFile == NULL || GifFile->Private == NULL)
        return GIF_ERROR;

    if (GifFile->Image.ColorMap) {
        GifFreeMapObject(GifFile->Image.ColorMap);
        GifFile->Image.ColorMap = NULL;
    }

    if (GifFile->SColorMap) {
        GifFreeMapObject(GifFile->SColorMap);
        GifFile->SColorMap = NULL;
    }

    if (GifFile->SavedImages) {
        GifFreeSavedImages(GifFile);
        GifFile->SavedImages = NULL;
    }

    GifFreeExtensions(&GifFile->ExtensionBlockCount, &GifFile->ExtensionBlocks);

    Private = (GifFilePrivateType *) GifFile->Private;

    if (!IS_READABLE(Private)) {
        /* This file was NOT open for reading: */
        GifFile->Error = D_GIF_ERR_NOT_READABLE;
        return GIF_ERROR;
    }

    if (Private->File && (fclose(Private->File) != 0)) {
        GifFile->Error = D_GIF_ERR_CLOSE_FAILED;
        return GIF_ERROR;
    }

    free((char *)GifFile->Private);

    /* 
     * Without the #ifndef, we get spurious warnings because Coverity mistakenly
     * thinks the GIF structure is freed on an error return. 
     */
#ifndef __COVERITY__
    free(GifFile);
#endif /* __COVERITY__ */

    return GIF_OK;
}

开发者ID:9miao，项目名称:CrossApp，代码行数:53，代码来源:dgif_lib.c

示例5: FreeLastSavedImage

/* Private Function:
 * Frees the last image in the GifFile->SavedImages array
 */
void
FreeLastSavedImage(GifFileType *GifFile)
{
    SavedImage *sp;

    if ((GifFile == NULL) || (GifFile->SavedImages == NULL))
        return;

    /* Remove one SavedImage from the GifFile */
    GifFile->ImageCount--;
    sp = &GifFile->SavedImages[GifFile->ImageCount];

    /* Deallocate its Colormap */
    if (sp->ImageDesc.ColorMap != NULL) {
        GifFreeMapObject(sp->ImageDesc.ColorMap);
        sp->ImageDesc.ColorMap = NULL;
    }

    /* Deallocate the image data */
    if (sp->RasterBits != NULL)
        free((char *)sp->RasterBits);

    /* Deallocate any extensions */
    GifFreeExtensions(&sp->ExtensionBlockCount, &sp->ExtensionBlocks);

    /*** FIXME: We could realloc the GifFile->SavedImages structure but is
     * there a point to it? Saves some memory but we'd have to do it every
     * time.  If this is used in GifFreeSavedImages then it would be inefficient
     * (The whole array is going to be deallocated.)  If we just use it when
     * we want to free the last Image it's convenient to do it here.
     */
}

开发者ID:JetBrains，项目名称:jdk8u_jdk，代码行数:35，代码来源:gifalloc.c

示例6: cleanUp

static void cleanUp(GifInfo* info) {
	free(info->backupPtr);
	info->backupPtr = NULL;
	free(info->infos);
	info->infos = NULL;
	free(info->rasterBits);
	info->rasterBits = NULL;
	free(info->comment);
	info->comment = NULL;

	GifFileType* GifFile = info->gifFilePtr;
	if (GifFile->SavedImages != NULL) {
		SavedImage *sp;
		for (sp = GifFile->SavedImages;
				sp < GifFile->SavedImages + GifFile->ImageCount; sp++) {
			if (sp->ImageDesc.ColorMap != NULL) {
				GifFreeMapObject(sp->ImageDesc.ColorMap);
				sp->ImageDesc.ColorMap = NULL;
			}
		}
		free(GifFile->SavedImages);
		GifFile->SavedImages = NULL;
	}
	DGifCloseFile(GifFile);
	free(info);
}

开发者ID:kyze8439690，项目名称:Qingbo，代码行数:26，代码来源:gif.c

示例7: free

void
AnimatedGifEncoder::end_encoding() {
    free(gif_buf);
    gif_buf = NULL;
    if (output_color_map) {
        GifFreeMapObject(output_color_map);
        output_color_map = NULL;
    }
    if (gif_file) {
        EGifCloseFile(gif_file);
        gif_file = NULL;
    }
}

开发者ID:dariusk，项目名称:dfk-gif，代码行数:13，代码来源:gif_encoder.cpp

示例8: GifFreeSavedImages

void
GifFreeSavedImages(GifFileType *GifFile) {
	SavedImage *sp;

	if ((GifFile == NULL) || (GifFile->SavedImages == NULL)) {
		return;
	}
	for (sp = GifFile->SavedImages;
	     sp < GifFile->SavedImages + GifFile->ImageCount; sp++) {
		if (sp->ImageDesc.ColorMap != NULL) {
			GifFreeMapObject(sp->ImageDesc.ColorMap);
			sp->ImageDesc.ColorMap = NULL;
		}

//        if (sp->RasterBits != NULL)
//            free((char *)sp->RasterBits);
//
//	GifFreeExtensions(&sp->ExtensionBlockCount, &sp->ExtensionBlocks);
	}
	free((char *) GifFile->SavedImages);
	GifFile->SavedImages = NULL;
}

开发者ID:BridgePasserby，项目名称:android-gif-drawable，代码行数:22，代码来源:gifalloc.c

示例9: GifUnionColorMap

/*******************************************************************************
 Compute the union of two given color maps and return it.  If result can't
 fit into 256 colors, NULL is returned, the allocated union otherwise.
 ColorIn1 is copied as is to ColorUnion, while colors from ColorIn2 are
 copied iff they didn't exist before.  ColorTransIn2 maps the old
 ColorIn2 into the ColorUnion color map table./
*******************************************************************************/
ColorMapObject *
GifUnionColorMap(const ColorMapObject *ColorIn1,
              const ColorMapObject *ColorIn2,
              GifPixelType ColorTransIn2[])
{
    int i, j, CrntSlot, RoundUpTo, NewGifBitSize;
    ColorMapObject *ColorUnion;

    /*
     * We don't worry about duplicates within either color map; if
     * the caller wants to resolve those, he can perform unions
     * with an empty color map.
     */

    /* Allocate table which will hold the result for sure. */
    ColorUnion = GifMakeMapObject(MAX(ColorIn1->ColorCount,
                               ColorIn2->ColorCount) * 2, NULL);

    if (ColorUnion == NULL)
        return (NULL);

    /*
     * Copy ColorIn1 to ColorUnion.
     */
    for (i = 0; i < ColorIn1->ColorCount; i++)
        ColorUnion->Colors[i] = ColorIn1->Colors[i];
    CrntSlot = ColorIn1->ColorCount;

    /*
     * Potentially obnoxious hack:
     *
     * Back CrntSlot down past all contiguous {0, 0, 0} slots at the end
     * of table 1.  This is very useful if your display is limited to
     * 16 colors.
     */
    while (ColorIn1->Colors[CrntSlot - 1].Red == 0
           && ColorIn1->Colors[CrntSlot - 1].Green == 0
           && ColorIn1->Colors[CrntSlot - 1].Blue == 0)
        CrntSlot--;

    /* Copy ColorIn2 to ColorUnion (use old colors if they exist): */
    for (i = 0; i < ColorIn2->ColorCount && CrntSlot <= 256; i++) {
        /* Let's see if this color already exists: */
        for (j = 0; j < ColorIn1->ColorCount; j++)
            if (memcmp (&ColorIn1->Colors[j], &ColorIn2->Colors[i],
                        sizeof(GifColorType)) == 0)
                break;

        if (j < ColorIn1->ColorCount)
            ColorTransIn2[i] = j;    /* color exists in Color1 */
        else {
            /* Color is new - copy it to a new slot: */
            ColorUnion->Colors[CrntSlot] = ColorIn2->Colors[i];
            ColorTransIn2[i] = CrntSlot++;
        }
    }

    if (CrntSlot > 256) {
        GifFreeMapObject(ColorUnion);
        return ((ColorMapObject *) NULL);
    }

    NewGifBitSize = GifBitSize(CrntSlot);
    RoundUpTo = (1 << NewGifBitSize);

    if (RoundUpTo != ColorUnion->ColorCount) {
        register GifColorType *Map = ColorUnion->Colors;

        /*
         * Zero out slots up to next power of 2.
         * We know these slots exist because of the way ColorUnion's
         * start dimension was computed.
         */
        for (j = CrntSlot; j < RoundUpTo; j++)
            Map[j].Red = Map[j].Green = Map[j].Blue = 0;

        /* perhaps we can shrink the map? */
        if (RoundUpTo < ColorUnion->ColorCount) {
            GifColorType *new_map = (GifColorType *)realloc(Map,
                                 sizeof(GifColorType) * RoundUpTo);
            if( new_map == NULL ) {
                GifFreeMapObject(ColorUnion);
                return ((ColorMapObject *) NULL);
            }
            ColorUnion->Colors = new_map;
        }
    }

    ColorUnion->ColorCount = RoundUpTo;
    ColorUnion->BitsPerPixel = NewGifBitSize;

    return (ColorUnion);
}

开发者ID:JetBrains，项目名称:jdk8u_jdk，代码行数:100，代码来源:gifalloc.c

示例10: pixToGif

/*!
 * \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);
//.........这里部分代码省略.........

开发者ID:pnordhus，项目名称:leptonica，代码行数:101，代码来源:gifio.c

示例11: DGifGetImageDesc

/******************************************************************************
 This routine should be called before any attempt to read an image.
 Note it is assumed the Image desc. header has been read.
******************************************************************************/
int
DGifGetImageDesc(GifFileType *GifFile)
{
    unsigned int BitsPerPixel;
    GifByteType Buf[3];
    GifFilePrivateType *Private = (GifFilePrivateType *)GifFile->Private;
    SavedImage *sp;

    if (!IS_READABLE(Private)) {
        /* This file was NOT open for reading: */
        GifFile->Error = D_GIF_ERR_NOT_READABLE;
        return GIF_ERROR;
    }

    if (DGifGetWord(GifFile, &GifFile->Image.Left) == GIF_ERROR ||
        DGifGetWord(GifFile, &GifFile->Image.Top) == GIF_ERROR ||
        DGifGetWord(GifFile, &GifFile->Image.Width) == GIF_ERROR ||
        DGifGetWord(GifFile, &GifFile->Image.Height) == GIF_ERROR)
        return GIF_ERROR;
    if (READ(GifFile, Buf, 1) != 1) {
        GifFile->Error = D_GIF_ERR_READ_FAILED;
	GifFreeMapObject(GifFile->Image.ColorMap);
	GifFile->Image.ColorMap = NULL;
        return GIF_ERROR;
    }
    BitsPerPixel = (Buf[0] & 0x07) + 1;
    GifFile->Image.Interlace = (Buf[0] & 0x40) ? giftrue : giffalse;

    /* Setup the colormap */
    if (GifFile->Image.ColorMap) {
        GifFreeMapObject(GifFile->Image.ColorMap);
        GifFile->Image.ColorMap = NULL;
    }
    /* Does this image have local color map? */
    if (Buf[0] & 0x80) {
	unsigned int i;

        GifFile->Image.ColorMap = GifMakeMapObject(1 << BitsPerPixel, NULL);
        if (GifFile->Image.ColorMap == NULL) {
            GifFile->Error = D_GIF_ERR_NOT_ENOUGH_MEM;
            return GIF_ERROR;
        }

        /* Get the image local color map: */
        for (i = 0; i < GifFile->Image.ColorMap->ColorCount; i++) {
            if (READ(GifFile, Buf, 3) != 3) {
                GifFreeMapObject(GifFile->Image.ColorMap);
                GifFile->Error = D_GIF_ERR_READ_FAILED;
                GifFile->Image.ColorMap = NULL;
                return GIF_ERROR;
            }
            GifFile->Image.ColorMap->Colors[i].Red = Buf[0];
            GifFile->Image.ColorMap->Colors[i].Green = Buf[1];
            GifFile->Image.ColorMap->Colors[i].Blue = Buf[2];
        }
    }

    if (GifFile->SavedImages) {
        if ((GifFile->SavedImages = (SavedImage *)realloc(GifFile->SavedImages,
                                      sizeof(SavedImage) *
                                      (GifFile->ImageCount + 1))) == NULL) {
            GifFile->Error = D_GIF_ERR_NOT_ENOUGH_MEM;
            return GIF_ERROR;
        }
    } else {
        if ((GifFile->SavedImages =
             (SavedImage *) malloc(sizeof(SavedImage))) == NULL) {
            GifFile->Error = D_GIF_ERR_NOT_ENOUGH_MEM;
            return GIF_ERROR;
        }
    }

    sp = &GifFile->SavedImages[GifFile->ImageCount];
    memcpy(&sp->ImageDesc, &GifFile->Image, sizeof(GifImageDesc));
    if (GifFile->Image.ColorMap != NULL) {
        sp->ImageDesc.ColorMap = GifMakeMapObject(
                                 GifFile->Image.ColorMap->ColorCount,
                                 GifFile->Image.ColorMap->Colors);
        if (sp->ImageDesc.ColorMap == NULL) {
            GifFile->Error = D_GIF_ERR_NOT_ENOUGH_MEM;
            return GIF_ERROR;
        }
    }
    sp->RasterBits = (unsigned char *)NULL;
    sp->ExtensionBlockCount = 0;
    sp->ExtensionBlocks = (ExtensionBlock *) NULL;

    GifFile->ImageCount++;

    Private->PixelCount = (long)GifFile->Image.Width *
       (long)GifFile->Image.Height;

    /* Reset decompress algorithm parameters. */
    (void)DGifSetupDecompress(GifFile);

    return GIF_OK;
//.........这里部分代码省略.........

开发者ID:9miao，项目名称:CrossApp，代码行数:101，代码来源:dgif_lib.c

示例12: SetErrorMessage

void EncodeToGifBufferWorker::Execute () {
    GifByteType
        * redBuff = (GifByteType *) _pixbuf,
        * greenBuff = (GifByteType *) _pixbuf + _width * _height,
        * blueBuff = (GifByteType *) _pixbuf + 2 * _width * _height,
        * alphaBuff = (GifByteType *) _pixbuf + 3 * _width * _height,
        * gifimgbuf = (GifByteType *) malloc(_width * _height * sizeof(GifByteType)); // the indexed image
    ColorMapObject *cmap;
    SavedImage * simg;

    if (NULL == gifimgbuf){
        SetErrorMessage("Out of memory");
        return;
    }

    cmap = GifMakeMapObject(_cmapSize, NULL);

    if (NULL == cmap){
        free(gifimgbuf);
        SetErrorMessage("Out of memory");
        return;
    }

    if (GIF_ERROR == GifQuantizeBuffer(
                _width, _height, &_colors,
               redBuff, greenBuff, blueBuff,
               gifimgbuf, cmap->Colors
        )){
        free(gifimgbuf);
        GifFreeMapObject(cmap);
        SetErrorMessage("Unable to quantize image");
        return;
    }

    int errcode;
    gifWriteCbData buffinf = {NULL, 0};
    GifFileType * gif;

    gif = EGifOpen((void *) &buffinf, gifWriteCB, &errcode);

    if (NULL == gif){
        free(gifimgbuf);
        GifFreeMapObject(cmap);
        SetErrorMessage(GifErrorString(errcode));
        return;
    }

    gif->SWidth = _width;
    gif->SHeight = _height;
    gif->SColorResolution = _cmapSize;

    simg = GifMakeSavedImage(gif, NULL);

    if (NULL == simg){
        free(gifimgbuf);
        EGifCloseFile(gif, &errcode); // will also free cmap
        SetErrorMessage("Out of memory");
        return;
    }

    simg->ImageDesc.Left = 0;
    simg->ImageDesc.Top = 0;
    simg->ImageDesc.Width = _width;
    simg->ImageDesc.Height = _height;
    simg->ImageDesc.Interlace = _interlaced;
    simg->ImageDesc.ColorMap = cmap;
    simg->RasterBits = gifimgbuf;

    // for some reason giflib sometimes creates an invalid file if the global
    // color table is not set as well
    gif->SColorMap = cmap;

    if (_trans){
        ExtensionBlock ext;
        // 1. assign transparent color index in color table
        GraphicsControlBlock gcb = {0, false, 0, _colors++};
        // 2. replace transparent pixels above threshold with this color
        remapTransparentPixels(gifimgbuf, alphaBuff, _width, _height, gcb.TransparentColor, _threshold);
        // 3. create a control block
        size_t extlen = EGifGCBToExtension(&gcb, (GifByteType *) &ext);
        if (GIF_ERROR == GifAddExtensionBlock(
                &(simg->ExtensionBlockCount),
                &(simg->ExtensionBlocks),
                GRAPHICS_EXT_FUNC_CODE,
                extlen,
                (unsigned char *) &ext)
            ) {
            EGifCloseFile(gif, &errcode);
            SetErrorMessage("Out of memory");
            return;
        }
    }


    if (GIF_ERROR == EGifSpew(gif)){
        EGifCloseFile(gif, &errcode);
        SetErrorMessage(GifErrorString(gif->Error));
        return;
    }

//.........这里部分代码省略.........

开发者ID:AtheistOfFail，项目名称:twitter_analysis，代码行数:101，代码来源:gif_worker.cpp

示例13: DGifGetImageDesc

 //读取单个帧的图片信息(图片的上下左右坐标，帧的局部颜色空间等)
int
DGifGetImageDesc(GifFileType *GifFile)
{
    unsigned int BitsPerPixel;
    GifByteType Buf[3];
    GifFilePrivateType *Private = (GifFilePrivateType *)GifFile->Private;
    SavedImage *sp;

    if (!IS_READABLE(Private)) {
        /* This file was NOT open for reading: */
        GifFile->Error = D_GIF_ERR_NOT_READABLE;
        return GIF_ERROR;
    }

    //读取当前帧的上下左右坐标
    if (DGifGetWord(GifFile, &GifFile->Image.Left) == GIF_ERROR ||
        DGifGetWord(GifFile, &GifFile->Image.Top) == GIF_ERROR ||
        DGifGetWord(GifFile, &GifFile->Image.Width) == GIF_ERROR ||
        DGifGetWord(GifFile, &GifFile->Image.Height) == GIF_ERROR)
        return GIF_ERROR;

    //读取长度1字节的信息(即当前帧的Packed Field)
    if (READ(GifFile, Buf, 1) != 1) {
        GifFile->Error = D_GIF_ERR_READ_FAILED;
	GifFreeMapObject(GifFile->Image.ColorMap);
	GifFile->Image.ColorMap = NULL;
        return GIF_ERROR;
    }

    //局部颜色空间的大小
    BitsPerPixel = (Buf[0] & 0x07) + 1;

    //判断当前帧是否交错模式
    GifFile->Image.Interlace = (Buf[0] & 0x40) ? true : false;

    /* Setup the colormap */
    if (GifFile->Image.ColorMap) {
        GifFreeMapObject(GifFile->Image.ColorMap);
        GifFile->Image.ColorMap = NULL;
    }

    //判断当前帧是否使用局部的颜色空间
    if (Buf[0] & 0x80) {
	unsigned int i;

        GifFile->Image.ColorMap = GifMakeMapObject(1 << BitsPerPixel, NULL);
        if (GifFile->Image.ColorMap == NULL) {
            GifFile->Error = D_GIF_ERR_NOT_ENOUGH_MEM;
            return GIF_ERROR;
        }

        //获取局部颜色空间 并储存到临时的帧描述内
        for (i = 0; i < GifFile->Image.ColorMap->ColorCount; i++) {
	    /* coverity[check_return] */
            if (READ(GifFile, Buf, 3) != 3) {
                GifFreeMapObject(GifFile->Image.ColorMap);
                GifFile->Error = D_GIF_ERR_READ_FAILED;
                GifFile->Image.ColorMap = NULL;
                return GIF_ERROR;
            }
            GifFile->Image.ColorMap->Colors[i].Red = Buf[0];
            GifFile->Image.ColorMap->Colors[i].Green = Buf[1];
            GifFile->Image.ColorMap->Colors[i].Blue = Buf[2];
        }
    }

    //判断之前是否已经有储存帧图像
    if (GifFile->SavedImages) {
        //如果有已经储存的帧图像 需要重新分配空间
        SavedImage* new_saved_images =
            (SavedImage *)realloc(GifFile->SavedImages,
                            sizeof(SavedImage) * (GifFile->ImageCount + 1));
        if (new_saved_images == NULL) {
            GifFile->Error = D_GIF_ERR_NOT_ENOUGH_MEM;
            return GIF_ERROR;
        }
        GifFile->SavedImages = new_saved_images;
    } else {
        if ((GifFile->SavedImages =
             (SavedImage *) malloc(sizeof(SavedImage))) == NULL) {
            GifFile->Error = D_GIF_ERR_NOT_ENOUGH_MEM;
            return GIF_ERROR;
        }
    }

    //指向新的SavedImage
    sp = &GifFile->SavedImages[GifFile->ImageCount];
    //写入之前获取的帧图像描述
    memcpy(&sp->ImageDesc, &GifFile->Image, sizeof(GifImageDesc));
    //写入局部颜色空间
    if (GifFile->Image.ColorMap != NULL) {
        sp->ImageDesc.ColorMap = GifMakeMapObject(
                                 GifFile->Image.ColorMap->ColorCount,
                                 GifFile->Image.ColorMap->Colors);
        if (sp->ImageDesc.ColorMap == NULL) {
            GifFile->Error = D_GIF_ERR_NOT_ENOUGH_MEM;
            return GIF_ERROR;
        }
    }
//.........这里部分代码省略.........

开发者ID:7heaven，项目名称:libgif_comment，代码行数:101，代码来源:dgif_lib.c

示例14: CSLFetchBoolean


//.........这里部分代码省略.........
    }
    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.                            */

开发者ID:GeospatialDaryl，项目名称:VS2013__00_GDAL_111_x64，代码行数:67，代码来源:gifdataset.cpp

示例15: gif_encode

void *
gif_encode(Image *image, int single, int *size)
{
    int width = image->columns;
    int height = image->rows;
    int total = width * height;
    GifByteType red[total];
    GifByteType green[total];
    GifByteType blue[total];

    // Quantize the images using IM/GM first, to reduce
    // their number of colors to 256.
    int count = GetImageListLength(image);
    QuantizeInfo info;
    GetQuantizeInfo(&info);
    info.dither = 0;
    info.number_colors = NCOLORS;
    QuantizeImage(&info, image);
    if (count > 1) {
#ifdef _MAGICK_USES_IM
        RemapImages(&info, image->next, image);
#else
        MapImages(image->next, image, 0);
#endif
    }

    if (!acquire_image_pixels(image, red, green, blue)) {
        return NULL;
    }

    size_t frame_size = sizeof(Frame) + total;
    Frame *frames = malloc(frame_size * count);

    ColorMapObject *palette = GifMakeMapObject(NCOLORS, NULL);
    int palette_size = NCOLORS;

    // Quantize again using giflib, since it yields a palette which produces
    // better compression, reducing the file size by 20%. Note that this second
    // quantization is very fast, because the image already has 256 colors, so
    // its effect on performance is negligible.
    if (GifQuantizeBuffer(width, height, &palette_size, red, green, blue, frames->data, palette->Colors) == GIF_ERROR) {
        GifFreeMapObject(palette);
        free(frames);
        return NULL;
    }

    frames->width = width;
    frames->height = height;
    frames->duration = image->delay;
    GifColorType *colors = palette->Colors;

    Image *cur = image->next;
    PixelCache *cache = pixel_cache_new();
    unsigned char *p = (unsigned char*)frames;
    int ii;
    for (ii = 1; ii < count; ii++, cur = cur->next) {
        p += frame_size;
        Frame *frame = (Frame*)p;
        frame->width = width;
        frame->height = height;
        frame->duration = cur->delay;
        GifPixelType *data = frame->data;
        
        if (!aprox_image_pixels(cur, colors, palette_size, cache, data)) {
            GifFreeMapObject(palette);
            free(frames);
            pixel_cache_free(cache);
            return NULL;
        }
    }
    pixel_cache_free(cache);
    void *ret = gif_save(image, palette, frames, count, frame_size, size);
    GifFreeMapObject(palette);
    free(frames);
    return ret;
}

开发者ID:cortex，项目名称:magick，代码行数:76，代码来源:gif.c

示例16: ASSERT


//.........这里部分代码省略.........
                }
                LOGD("Rendered image (%d)", imageIndex);

                // Generate the image in the output GIF.
                for (int y = 0; y < gifOut->SHeight; y++) {
                    for (int x = 0; x < gifOut->SWidth; x++) {
                      const GifByteType dstColorIndex = computeNewColorIndex(
                          gifIn, transparentColor, renderBuffer.get(), x, y);
                      *(dstRowBuffer.get() + x) = dstColorIndex;
                    }
                    if (EGifPutLine(gifOut, dstRowBuffer.get(), gifOut->SWidth) == GIF_ERROR) {
                        LOGE("Could not write raster data (%d)", imageIndex);
                        return false;
                    }
                }
                LOGD("Wrote raster data (%d)", imageIndex);

                // Save the disposal mode for rendering the next image.
                // We only support DISPOSE_DO_NOT and DISPOSE_BACKGROUND.
                prevImageDisposalMode = disposalMode;
                if (prevImageDisposalMode == DISPOSAL_UNSPECIFIED) {
                    prevImageDisposalMode = DISPOSE_DO_NOT;
                } else if (prevImageDisposalMode == DISPOSE_PREVIOUS) {
                    prevImageDisposalMode = DISPOSE_BACKGROUND;
                }
                if (prevImageDisposalMode == DISPOSE_BACKGROUND) {
                    prevImageDimens.Left = gifIn->Image.Left;
                    prevImageDimens.Top = gifIn->Image.Top;
                    prevImageDimens.Width = gifIn->Image.Width;
                    prevImageDimens.Height = gifIn->Image.Height;
                }

                if (gifOut->Image.ColorMap) {
                    GifFreeMapObject(gifOut->Image.ColorMap);
                    gifOut->Image.ColorMap = NULL;
                }

                imageIndex++;
            } break;
            case EXTENSION_RECORD_TYPE: {
                int extCode;
                GifByteType* ext;
                if (DGifGetExtension(gifIn, &extCode, &ext) == GIF_ERROR) {
                    LOGE("Could not read extension block");
                    return false;
                }
                LOGD("Read extension block, code: %d", extCode);
                if (extCode == GRAPHICS_EXT_FUNC_CODE) {
                    GraphicsControlBlock gcb;
                    if (DGifExtensionToGCB(ext[0], ext + 1, &gcb) == GIF_ERROR) {
                        LOGE("Could not interpret GCB extension");
                        return false;
                    }
                    transparentColor = gcb.TransparentColor;

                    // This logic for setting the background color based on the first GCB
                    // doesn't quite match the GIF spec, but empirically it seems to work and it
                    // matches what libframesequence (Rastermill) does.
                    if (imageIndex == 0 && gifIn->SColorMap) {
                        if (gcb.TransparentColor == NO_TRANSPARENT_COLOR) {
                            GifColorType bgColorIndex =
                                    gifIn->SColorMap->Colors[gifIn->SBackGroundColor];
                            bgColor = gifColorToColorARGB(bgColorIndex);
                            LOGD("Set background color based on first GCB");
                        }
                    }

开发者ID:b-project，项目名称:Messaging，代码行数:67，代码来源:GifTranscoder.cpp

示例17: gifOnJNIUnload

void gifOnJNIUnload(JavaVM *vm, void *reserved) {
    GifFreeMapObject(defaultCmap);
}

开发者ID:SOKP，项目名称:hermes，代码行数:3，代码来源:gif.c

示例18: MCImageEncodeGIF

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;
}

开发者ID:soapdog，项目名称:livecode，代码行数:89，代码来源:igif.cpp

注：本文中的GifFreeMapObject函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。

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C++ GifFreeMapObject函数代码示例

示例1: DGifGetScreenDesc

示例2: EGifCloseFile

示例3: DGifCloseFile

示例4: DGifCloseFile

示例5: FreeLastSavedImage

示例6: cleanUp

示例7: free

示例8: GifFreeSavedImages

示例9: GifUnionColorMap

示例10: pixToGif

示例11: DGifGetImageDesc

示例12: SetErrorMessage

示例13: DGifGetImageDesc

示例14: CSLFetchBoolean

示例15: gif_encode

示例16: ASSERT

示例17: gifOnJNIUnload

示例18: MCImageEncodeGIF

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dphi-official/Machine_Learning_Bootcamp

tianli/matlab_offscreen: Matlab offscree

win7系统注册表编辑器打开的操作方法

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芙蓉王（硬领航）多少钱一包？

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CVE-2020-36276

SimpleSoftwareIO/simple-sms: Send and re

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C++ GifFreeMapObject函数代码示例

示例1: DGifGetScreenDesc

示例2: EGifCloseFile

示例3: DGifCloseFile

示例4: DGifCloseFile

示例5: FreeLastSavedImage

示例6: cleanUp

示例7: free

示例8: GifFreeSavedImages

示例9: GifUnionColorMap

示例10: pixToGif

示例11: DGifGetImageDesc

示例12: SetErrorMessage

示例13: DGifGetImageDesc

示例14: CSLFetchBoolean

示例15: gif_encode

示例16: ASSERT

示例17: gifOnJNIUnload

示例18: MCImageEncodeGIF

请发表评论

全部评论

上一篇：

下一篇：

dphi-official/Machine_Learning_Bootcamp

tianli/matlab_offscreen: Matlab offscree

win7系统注册表编辑器打开的操作方法

これがマストドンだ！ 使い方からインスタ

芙蓉王（硬领航）多少钱一包？

剪的笔顺,诠释剪的笔画,认识剪的部首

六六分期app的软件客服如何联系？(六六分期

florent37/ViewAnimator: A fluent Android

florent37/Shrine-MaterialDesign2: implem

CVE-2020-36276

SimpleSoftwareIO/simple-sms: Send and re

关于我们

产品与服务

解决方案

139-2527-9053

これがマストドンだ！使い方からインスタ