diff options
Diffstat (limited to 'giflib-4.1.6/util/giffiltr.c')
| -rw-r--r-- | giflib-4.1.6/util/giffiltr.c | 142 |
1 files changed, 0 insertions, 142 deletions
diff --git a/giflib-4.1.6/util/giffiltr.c b/giflib-4.1.6/util/giffiltr.c deleted file mode 100644 index f2c1d67..0000000 --- a/giflib-4.1.6/util/giffiltr.c +++ /dev/null @@ -1,142 +0,0 @@ -/* - * Skeleton file for generic GIF `filter' program --- sequentially read GIF - * records from stdin, process them, send them out. Most of the junk above - * `int main' isn't needed for the skeleton, but is likely to be for what - * you'll do with it. - * - * If you compile this, it will turn into an expensive GIF copying routine; - * stdin to stdout with no changes and minimal validation. Well, it's a - * decent test of the low-level routines, anyway. - * - * Note: due to the vicissitudes of Lempel-Ziv compression, the output of this - * copier may not be bitwise identical to its input. This can happen if you - * copy an image from a much more (or much *less*) memory-limited system; your - * compression may use more (or fewer) bits. The uncompressed rasters should, - * however, be identical (you can check this with icon2gif -d). - */ - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif - -#ifdef __MSDOS__ -#include <dos.h> -#include <alloc.h> -#include <graphics.h> -#include <io.h> -#endif /* __MSDOS__ */ - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#ifdef HAVE_FCNTL_H -#include <fcntl.h> -#endif /* HAVE_FCNTL_H */ -#include "getarg.h" -#include "gif_lib.h" - -#define PROGRAM_NAME "giffiltr" - -#ifdef __MSDOS__ -extern unsigned int - _stklen = 16384; /* Increase default stack size. */ -#endif /* __MSDOS__ */ - - -/****************************************************************************** -* 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); -} - -/****************************************************************************** -* Main sequence * -******************************************************************************/ -int main(int argc, char **argv) -{ - GifFileType *GifFileIn = NULL, *GifFileOut = NULL; - GifRecordType RecordType; - int CodeSize, ExtCode; - GifByteType *CodeBlock, *Extension; - - /* - * Command-line processing goes here. - */ - - /* Use the stdin as input (note this also read screen descriptor in: */ - if ((GifFileIn = DGifOpenFileHandle(0)) == NULL) - QuitGifError(GifFileIn, GifFileOut); - - /* Use the stdout as output: */ - if ((GifFileOut = EGifOpenFileHandle(1)) == NULL) - QuitGifError(GifFileIn, GifFileOut); - - /* 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: - /* Skip any extension blocks in file: */ - if (DGifGetExtension(GifFileIn, &ExtCode, &Extension) == GIF_ERROR) - QuitGifError(GifFileIn, GifFileOut); - if (EGifPutExtension(GifFileOut, ExtCode, Extension[0], - Extension + 1) == 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 trapped 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; -} |