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-rw-r--r--giflib-4.1.6/util/gifclip.c324
1 files changed, 0 insertions, 324 deletions
diff --git a/giflib-4.1.6/util/gifclip.c b/giflib-4.1.6/util/gifclip.c
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index a12507e..0000000
--- a/giflib-4.1.6/util/gifclip.c
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@@ -1,324 +0,0 @@
-/*****************************************************************************
-* "Gif-Lib" - Yet another gif library. *
-* *
-* Written by: Gershon Elber Ver 0.1, Jul. 1989 *
-******************************************************************************
-* Program to clip an image and dump out only portion of it. *
-* Options: *
-* -q : quiet printing mode. *
-* -i left top width bottom : clipping information for first image. *
-* -n n left top width bottom : clipping information for nth image. *
-* -c complement; remove the bands specified by -i or -n *
-* -h : on-line help *
-******************************************************************************
-* History: *
-* 8 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 "GifClip"
-
-#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 = "GifClip q%- c%- i%-Xmin|Ymin|Xmax|Ymax!d!d!d!d n%-n|Xmin|Ymin|Xmax|Ymax!d!d!d!d!d 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%- c%- i%-Xmin|Ymin|Xmax|Ymax!d!d!d!d n%-n|Xmin|Ymin|Xmax|Ymax!d!d!d!d!d h%- GifFile!*s";
-#endif /* SYSV */
-
-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, 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;
-}
-
-/******************************************************************************
-* 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);
-}
-
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