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Diffstat (limited to 'giflib-4.1.6/util/gifflip.c')
| -rw-r--r-- | giflib-4.1.6/util/gifflip.c | 347 |
1 files changed, 0 insertions, 347 deletions
diff --git a/giflib-4.1.6/util/gifflip.c b/giflib-4.1.6/util/gifflip.c deleted file mode 100644 index db0e3dc..0000000 --- a/giflib-4.1.6/util/gifflip.c +++ /dev/null @@ -1,347 +0,0 @@ -/***************************************************************************** -* "Gif-Lib" - Yet another gif library. * -* * -* Written by: Gershon Elber Ver 0.1, Jul. 1989 * -****************************************************************************** -* Program to rotate image 90 degrees to the right/left or flip the image * -* horizintally/vertically (mirror). * -* Options: * -* -q : quiet printing mode. * -* -r : rotate 90 degrees to the right (default). * -* -l : rotate 90 degrees to the left. * -* -x : Mirror the image horizontally (first line switch places with last). * -* -y : Mirror the image vertically (first column switch places with last). * -* -h : on-line help * -****************************************************************************** -* History: * -* 10 Jul 89 - Version 1.0 by Gershon Elber. * -*****************************************************************************/ - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif - -#ifdef __MSDOS__ -#include <stdlib.h> -#include <alloc.h> -#endif /* __MSDOS__ */ - -#ifndef __MSDOS__ -#include <stdlib.h> -#endif -#include <stdio.h> -#include <ctype.h> -#include <string.h> -#include "gif_lib.h" -#include "getarg.h" - -#define PROGRAM_NAME "GifFlip" - -#define FLIP_NONE 0 -#define FLIP_RIGHT 1 -#define FLIP_LEFT 2 -#define FLIP_HORIZ 3 -#define FLIP_VERT 4 - -#ifdef __MSDOS__ -extern unsigned int - _stklen = 16384; /* Increase default stack size. */ -#endif /* __MSDOS__ */ - -#ifdef SYSV -static char *VersionStr = - "Gif toolkit module,\t\tGershon Elber\n\ - (C) Copyright 1989 Gershon Elber.\n"; -static char - *CtrlStr = "GifFlip q%- r%- l%- x%- y%- h%- GifFile!*s"; -#else -static char - *VersionStr = - PROGRAM_NAME - GIF_LIB_VERSION - " Gershon Elber, " - __DATE__ ", " __TIME__ "\n" - "(C) Copyright 1989 Gershon Elber.\n"; -static char - *CtrlStr = - PROGRAM_NAME - " q%- r%- l%- x%- y%- h%- GifFile!*s"; -#endif /* SYSV */ - -/* Make some variables global, so we could access them faster: */ -static int - ImageNum = 0; - -static int LoadImage(GifFileType *GifFile, GifRowType **ImageBuffer); -static int DumpImage(GifFileType *GifFile, GifRowType *ImageBuffer, - int Width, int Height, int FlipDirection); -static void QuitGifError(GifFileType *GifFileIn, GifFileType *GifFileOut); - -/****************************************************************************** -* Interpret the command line and scan the given GIF file. * -******************************************************************************/ -int main(int argc, char **argv) -{ - int i, Error, NumFiles, ExtCode, FlipDirection = FLIP_RIGHT, - RightFlag = FALSE, LeftFlag = FALSE, - HorizFlag = FALSE, VertFlag = FALSE, HelpFlag = FALSE; - GifRecordType RecordType; - GifByteType *Extension; - char **FileName = NULL; - GifRowType *ImageBuffer; - GifFileType *GifFileIn = NULL, *GifFileOut = NULL; - - if ((Error = GAGetArgs(argc, argv, CtrlStr, &GifQuietPrint, - &RightFlag, &LeftFlag, &HorizFlag, &VertFlag, &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 ((i = (RightFlag != 0) + (LeftFlag != 0) + - (HorizFlag != 0) + (VertFlag != 0)) > 1) - GIF_EXIT("Only one of -r, -l, -x, -y please."); - if (i == 0) - FlipDirection = FLIP_RIGHT; /* Make it the default. */ - else { - if (RightFlag) FlipDirection = FLIP_RIGHT; - if (LeftFlag) FlipDirection = FLIP_LEFT; - if (HorizFlag) FlipDirection = FLIP_HORIZ; - if (VertFlag) FlipDirection = FLIP_VERT; - } - - 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); - - if (RightFlag || LeftFlag) { - /* Dump out same screen information, but flip Screen Width/Height: */ - if (EGifPutScreenDesc(GifFileOut, - GifFileIn->SHeight, GifFileIn->SWidth, - GifFileIn->SColorResolution, GifFileIn->SBackGroundColor, - GifFileIn->SColorMap) == GIF_ERROR) - QuitGifError(GifFileIn, GifFileOut); - } - else { - /* 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 (GifFileIn->Image.Interlace) - GIF_EXIT("Cannt flip interlaced images - use GifInter first."); - - /* Put the image descriptor to out file: */ - if (RightFlag) { - /* Rotate to the right: */ - if (EGifPutImageDesc(GifFileOut, - GifFileIn->SHeight - GifFileIn->Image.Height - - GifFileIn->Image.Top, - GifFileIn->Image.Left, - GifFileIn->Image.Height, GifFileIn->Image.Width, - FALSE, GifFileIn->Image.ColorMap) == GIF_ERROR) - QuitGifError(GifFileIn, GifFileOut); - } - else if (LeftFlag) { - /* Rotate to the left: */ - if (EGifPutImageDesc(GifFileOut, - GifFileIn->Image.Top, - GifFileIn->SWidth - GifFileIn->Image.Width - - GifFileIn->Image.Left, - GifFileIn->Image.Height, GifFileIn->Image.Width, - FALSE, GifFileIn->Image.ColorMap) == GIF_ERROR) - QuitGifError(GifFileIn, GifFileOut); - } - else { - /* No rotation - only flipping vert. or horiz.: */ - if (EGifPutImageDesc(GifFileOut, - GifFileIn->Image.Left, GifFileIn->Image.Top, - GifFileIn->Image.Width, GifFileIn->Image.Height, - FALSE, GifFileIn->Image.ColorMap) == GIF_ERROR) - QuitGifError(GifFileIn, GifFileOut); - } - - /* Load the image (either Interlaced or not), and dump it */ - /* fliped as requrested by Flags: */ - if (LoadImage(GifFileIn, &ImageBuffer) == GIF_ERROR) - QuitGifError(GifFileIn, GifFileOut); - if (DumpImage(GifFileOut, ImageBuffer, GifFileIn->Image.Width, - GifFileIn->Image.Height, FlipDirection) == 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; -} - -/****************************************************************************** -* Routine to read Image out. The image can be Non interlaced only. * -* The memory required to hold the image is allocate by the routine itself. * -* Return GIF_OK if succesful, GIF_ERROR otherwise. * -******************************************************************************/ -static int LoadImage(GifFileType *GifFile, GifRowType **ImageBufferPtr) -{ - int Size, i; - GifRowType *ImageBuffer; - - /* Allocate the image as vector of column of rows. We cannt allocate */ - /* the all screen at once, as this broken minded CPU can allocate up to */ - /* 64k at a time and our image can be bigger than that: */ - if ((ImageBuffer = (GifRowType *) - malloc(GifFile->Image.Height * sizeof(GifRowType *))) == NULL) - GIF_EXIT("Failed to allocate memory required, aborted."); - - Size = GifFile->Image.Width * sizeof(GifPixelType);/* One row size in bytes.*/ - for (i = 0; i < GifFile->Image.Height; i++) { - /* Allocate the rows: */ - if ((ImageBuffer[i] = (GifRowType) malloc(Size)) == NULL) - GIF_EXIT("Failed to allocate memory required, aborted."); - } - - *ImageBufferPtr = ImageBuffer; - - GifQprintf("\n%s: Image %d at (%d, %d) [%dx%d]: ", - PROGRAM_NAME, ++ImageNum, GifFile->Image.Left, GifFile->Image.Top, - GifFile->Image.Width, GifFile->Image.Height); - - for (i = 0; i < GifFile->Image.Height; i++) { - GifQprintf("\b\b\b\b%-4d", i); - if (DGifGetLine(GifFile, ImageBuffer[i], GifFile->Image.Width) - == GIF_ERROR) return GIF_ERROR; - } - - return GIF_OK; -} - -/****************************************************************************** -* Routine to dump image out. The given Image buffer should always hold the * -* image sequencially, and Width & Height hold image dimensions BEFORE flip. * -* Image will be dumped according to FlipDirection. * -* Once dumped, the memory holding the image is freed. * -* Return GIF_OK if succesful, GIF_ERROR otherwise. * -******************************************************************************/ -static int DumpImage(GifFileType *GifFile, GifRowType *ImageBuffer, - int Width, int Height, int FlipDirection) -{ - int i, j, Count; - GifRowType Line; /* New scan line is copied to it. */ - - /* Allocate scan line that will fit both image width and height: */ - if ((Line = (GifRowType) malloc((Width > Height ? Width : Height) - * sizeof(GifPixelType))) == NULL) - GIF_EXIT("Failed to allocate memory required, aborted."); - - switch (FlipDirection) { - case FLIP_RIGHT: - for (Count = Width, i = 0; i < Width; i++) { - GifQprintf("\b\b\b\b%-4d", Count--); - for (j = 0; j < Height; j++) - Line[j] = ImageBuffer[Height - j - 1][i]; - if (EGifPutLine(GifFile, Line, Height) == GIF_ERROR) - return GIF_ERROR; - } - break; - case FLIP_LEFT: - for (i = Width - 1; i >= 0; i--) { - GifQprintf("\b\b\b\b%-4d", i + 1); - for (j = 0; j < Height; j++) - Line[j] = ImageBuffer[j][i]; - if (EGifPutLine(GifFile, Line, Height) == GIF_ERROR) - return GIF_ERROR; - } - break; - case FLIP_HORIZ: - for (i = Height - 1; i >= 0; i--) { - GifQprintf("\b\b\b\b%-4d", i); - if (EGifPutLine(GifFile, ImageBuffer[i], Width) == GIF_ERROR) - return GIF_ERROR; - } - break; - case FLIP_VERT: - for (Count = Height, i = 0; i < Height; i++) { - GifQprintf("\b\b\b\b%-4d", Count--); - for (j = 0; j < Width; j++) - Line[j] = ImageBuffer[i][Width - j - 1]; - if (EGifPutLine(GifFile, Line, Width) == GIF_ERROR) - return GIF_ERROR; - } - break; - } - - /* Free the memory used for this image, and the temporary scan line: */ - for (i = 0; i < Height; i++) free((char *) ImageBuffer[i]); - free((char *) ImageBuffer); - - free((char *) Line); - - return GIF_OK; -} - -/****************************************************************************** -* Close both input and output file (if open), and exit. * -******************************************************************************/ -static void QuitGifError(GifFileType *GifFileIn, GifFileType *GifFileOut) -{ - PrintGifError(); - if (GifFileIn != NULL) DGifCloseFile(GifFileIn); - if (GifFileOut != NULL) EGifCloseFile(GifFileOut); - exit(EXIT_FAILURE); -} |