summaryrefslogtreecommitdiffstats
path: root/giflib-4.1.6/util/gif2rgb.c
diff options
context:
space:
mode:
Diffstat (limited to 'giflib-4.1.6/util/gif2rgb.c')
-rw-r--r--giflib-4.1.6/util/gif2rgb.c336
1 files changed, 0 insertions, 336 deletions
diff --git a/giflib-4.1.6/util/gif2rgb.c b/giflib-4.1.6/util/gif2rgb.c
deleted file mode 100644
index e44f3f6..0000000
--- a/giflib-4.1.6/util/gif2rgb.c
+++ /dev/null
@@ -1,336 +0,0 @@
-/*****************************************************************************
-* "Gif-Lib" - Yet another gif library. *
-* *
-* Written by: Gershon Elber Ver 0.1, Jul. 1989 *
-******************************************************************************
-* Program to convert GIF file to RGB 24 bits. *
-* Options: *
-* -q : quiet printing mode. *
-* -1 : dump as one file using RGBRGB triples. *
-* -h : on-line help. *
-* -o FileName : specify the output file name(s). *
-******************************************************************************
-* History: *
-* 5 Jan 90 - Version 1.0 by Gershon Elber. *
-*****************************************************************************/
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#ifdef __MSDOS__
-#include <graphics.h>
-#include <stdlib.h>
-#include <alloc.h>
-#include <io.h>
-#include <dos.h>
-#include <bios.h>
-#endif /* __MSDOS__ */
-
-#ifndef __MSDOS__
-#include <stdlib.h>
-#endif
-#include <stdio.h>
-#include <ctype.h>
-#include <string.h>
-#ifdef HAVE_FCNTL_H
-#include <fcntl.h>
-#endif /* HAVE_FCNTL_H */
-#include "gif_lib.h"
-#include "getarg.h"
-
-#define PROGRAM_NAME "Gif2RGB"
-
-#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 = "Gif2RGB q%- 1%- o%-OutFileName!s 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%- 1%- o%-OutFileName!s h%- GifFile!*s";
-#endif /* SYSV */
-
-/* Make some variables global, so we could access them faster: */
-static int
- ImageNum = 0,
- BackGround = 0,
- OneFileFlag = FALSE,
- HelpFlag = FALSE,
- InterlacedOffset[] = { 0, 4, 2, 1 }, /* The way Interlaced image should. */
- InterlacedJumps[] = { 8, 8, 4, 2 }; /* be read - offsets and jumps... */
-static ColorMapObject
- *ColorMap;
-
-static void DumpScreen2RGB(char *FileName, int OneFileFlag,
- GifRowType *ScreenBuffer,
- int ScreenWidth, int ScreenHeight);
-
-/******************************************************************************
-* Interpret the command line and scan the given GIF file. *
-******************************************************************************/
-int main(int argc, char **argv)
-{
- int i, j, Error, NumFiles, Size, Row, Col, Width, Height, ExtCode, Count,
- OutFileFlag = FALSE;
- GifRecordType RecordType;
- GifByteType *Extension;
- char *OutFileName,
- **FileName = NULL;
- GifRowType *ScreenBuffer;
- GifFileType *GifFile;
-
- if ((Error = GAGetArgs(argc, argv, CtrlStr, &GifQuietPrint,
- &OneFileFlag, &OutFileFlag, &OutFileName,
- &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 (!OutFileFlag) OutFileName = NULL;
-
- if (NumFiles == 1) {
- if ((GifFile = DGifOpenFileName(*FileName)) == NULL) {
- PrintGifError();
- exit(EXIT_FAILURE);
- }
- }
- else {
- /* Use the stdin instead: */
-
-#ifdef __MSDOS__
- setmode(0, O_BINARY);
-#endif /* __MSDOS__ */
- if ((GifFile = DGifOpenFileHandle(0)) == NULL) {
- PrintGifError();
- exit(EXIT_FAILURE);
- }
- }
-
- /* Allocate the screen 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: */
- /* Note this screen is device independent - its the screen as defined by */
- /* the GIF file parameters itself. */
- if ((ScreenBuffer = (GifRowType *)
- malloc(GifFile->SHeight * sizeof(GifRowType *))) == NULL)
- GIF_EXIT("Failed to allocate memory required, aborted.");
-
- Size = GifFile->SWidth * sizeof(GifPixelType);/* Size in bytes one row.*/
- if ((ScreenBuffer[0] = (GifRowType) malloc(Size)) == NULL) /* First row. */
- GIF_EXIT("Failed to allocate memory required, aborted.");
-
- for (i = 0; i < GifFile->SWidth; i++) /* Set its color to BackGround. */
- ScreenBuffer[0][i] = GifFile->SBackGroundColor;
- for (i = 1; i < GifFile->SHeight; i++) {
- /* Allocate the other rows, and set their color to background too: */
- if ((ScreenBuffer[i] = (GifRowType) malloc(Size)) == NULL)
- GIF_EXIT("Failed to allocate memory required, aborted.");
-
- memcpy(ScreenBuffer[i], ScreenBuffer[0], Size);
- }
-
- /* Scan the content of the GIF file and load the image(s) in: */
- do {
- if (DGifGetRecordType(GifFile, &RecordType) == GIF_ERROR) {
- PrintGifError();
- exit(EXIT_FAILURE);
- }
- switch (RecordType) {
- case IMAGE_DESC_RECORD_TYPE:
- if (DGifGetImageDesc(GifFile) == GIF_ERROR) {
- PrintGifError();
- exit(EXIT_FAILURE);
- }
- Row = GifFile->Image.Top; /* Image Position relative to Screen. */
- Col = GifFile->Image.Left;
- Width = GifFile->Image.Width;
- Height = GifFile->Image.Height;
- GifQprintf("\n%s: Image %d at (%d, %d) [%dx%d]: ",
- PROGRAM_NAME, ++ImageNum, Col, Row, Width, Height);
- if (GifFile->Image.Left + GifFile->Image.Width > GifFile->SWidth ||
- GifFile->Image.Top + GifFile->Image.Height > GifFile->SHeight) {
- fprintf(stderr, "Image %d is not confined to screen dimension, aborted.\n",ImageNum);
- exit(EXIT_FAILURE);
- }
- if (GifFile->Image.Interlace) {
- /* Need to perform 4 passes on the images: */
- for (Count = i = 0; i < 4; i++)
- for (j = Row + InterlacedOffset[i]; j < Row + Height;
- j += InterlacedJumps[i]) {
- GifQprintf("\b\b\b\b%-4d", Count++);
- if (DGifGetLine(GifFile, &ScreenBuffer[j][Col],
- Width) == GIF_ERROR) {
- PrintGifError();
- exit(EXIT_FAILURE);
- }
- }
- }
- else {
- for (i = 0; i < Height; i++) {
- GifQprintf("\b\b\b\b%-4d", i);
- if (DGifGetLine(GifFile, &ScreenBuffer[Row++][Col],
- Width) == GIF_ERROR) {
- PrintGifError();
- exit(EXIT_FAILURE);
- }
- }
- }
- break;
- case EXTENSION_RECORD_TYPE:
- /* Skip any extension blocks in file: */
- if (DGifGetExtension(GifFile, &ExtCode, &Extension) == GIF_ERROR) {
- PrintGifError();
- exit(EXIT_FAILURE);
- }
- while (Extension != NULL) {
- if (DGifGetExtensionNext(GifFile, &Extension) == GIF_ERROR) {
- PrintGifError();
- exit(EXIT_FAILURE);
- }
- }
- break;
- case TERMINATE_RECORD_TYPE:
- break;
- default: /* Should be traps by DGifGetRecordType. */
- break;
- }
- } while (RecordType != TERMINATE_RECORD_TYPE);
-
- /* Lets dump it - set the global variables required and do it: */
- BackGround = GifFile->SBackGroundColor;
- ColorMap = (GifFile->Image.ColorMap
- ? GifFile->Image.ColorMap
- : GifFile->SColorMap);
- if (ColorMap == NULL) {
- fprintf(stderr, "Gif Image does not have a colormap\n");
- exit(EXIT_FAILURE);
- }
-
- DumpScreen2RGB(OutFileName, OneFileFlag,
- ScreenBuffer, GifFile->SWidth, GifFile->SHeight);
-
- if (DGifCloseFile(GifFile) == GIF_ERROR) {
- PrintGifError();
- exit(EXIT_FAILURE);
- }
-
- return 0;
-}
-
-/******************************************************************************
-* The real dumping routine. *
-******************************************************************************/
-static void DumpScreen2RGB(char *FileName, int OneFileFlag,
- GifRowType *ScreenBuffer,
- int ScreenWidth, int ScreenHeight)
-{
- int i, j;
- GifRowType GifRow;
- static GifColorType *ColorMapEntry;
- FILE *f[3];
-
- if (FileName != NULL) {
- char OneFileName[80];
-
- if (OneFileFlag) {
- if ((f[0] = fopen(FileName, "wb")) == NULL)
- GIF_EXIT("Can't open input file name.");
- } else {
- static char *Postfixes[] = { ".R", ".G", ".B" };
-
- for (i = 0; i < 3; i++) {
- strcpy(OneFileName, FileName);
- strcat(OneFileName, Postfixes[i]);
-
- if ((f[i] = fopen(OneFileName, "wb")) == NULL) {
- GIF_EXIT("Can't open input file name.");
- }
- }
- }
- } else {
- OneFileFlag = TRUE;
-
- #ifdef __MSDOS__
- setmode(0, O_BINARY);
- #endif /* __MSDOS__ */
-
- f[0] = stdout;
- }
-
- if (OneFileFlag) {
- unsigned char *Buffer, *BufferP;
-
- if ((Buffer = (unsigned char *) malloc(ScreenWidth * 3)) == NULL)
- GIF_EXIT("Failed to allocate memory required, aborted.");
- for (i = 0; i < ScreenHeight; i++) {
- GifRow = ScreenBuffer[i];
- GifQprintf("\b\b\b\b%-4d", ScreenHeight - i);
- for (j = 0, BufferP = Buffer; j < ScreenWidth; j++) {
- ColorMapEntry = &ColorMap->Colors[GifRow[j]];
- *BufferP++ = ColorMapEntry->Red;
- *BufferP++ = ColorMapEntry->Green;
- *BufferP++ = ColorMapEntry->Blue;
- }
- if (fwrite(Buffer, ScreenWidth * 3, 1, f[0]) != 1)
- GIF_EXIT("Write to file(s) failed.");
- }
-
- free((char *) Buffer);
- fclose(f[0]);
- } else {
- unsigned char *Buffers[3];
-
- if ((Buffers[0] = (unsigned char *) malloc(ScreenWidth)) == NULL ||
- (Buffers[1] = (unsigned char *) malloc(ScreenWidth)) == NULL ||
- (Buffers[2] = (unsigned char *) malloc(ScreenWidth)) == NULL)
- GIF_EXIT("Failed to allocate memory required, aborted.");
-
- for (i = 0; i < ScreenHeight; i++) {
- GifRow = ScreenBuffer[i];
- GifQprintf("\b\b\b\b%-4d", ScreenHeight - i);
- for (j = 0; j < ScreenWidth; j++) {
- ColorMapEntry = &ColorMap->Colors[GifRow[j]];
- Buffers[0][j] = ColorMapEntry->Red;
- Buffers[1][j] = ColorMapEntry->Green;
- Buffers[2][j] = ColorMapEntry->Blue;
- }
- if (fwrite(Buffers[0], ScreenWidth, 1, f[0]) != 1 ||
- fwrite(Buffers[1], ScreenWidth, 1, f[1]) != 1 ||
- fwrite(Buffers[2], ScreenWidth, 1, f[2]) != 1)
- GIF_EXIT("Write to file(s) failed.");
- }
-
- free((char *) Buffers[0]);
- free((char *) Buffers[1]);
- free((char *) Buffers[2]);
- fclose(f[0]);
- fclose(f[1]);
- fclose(f[2]);
- }
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-18 04:22:33 +0000