-/* gif2swf.c
+/* -*- mode: c; tab-width: 4; -*- [for (x)emacs]
+ gif2swf.c
GIF to SWF converter tool
- Copyright (c) 2005 Daichi Shinozaki <dseg@shield.jp>
-
+ Copyleft (c) 2005 Daichi Shinozaki <dseg@shield.jp>
+
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+*/
#include <stdio.h>
#include <fcntl.h>
#define MAX_INPUT_FILES 1024
#define VERBOSE(x) (global.verbose>=x)
-#define PROGRAM_NAME "gif2swf"
+#define PROGRAM_NAME "gif2swf"
struct {
float framerate;
int do_cgi;
int version;
char *outfile;
+ int imagecount;
} global;
struct {
int getTransparentColor(GifFileType * gft)
{
- int i;
- ExtensionBlock* ext = gft->SavedImages[0].ExtensionBlocks;
-
- for (i=0; i < gft->SavedImages[0].ExtensionBlockCount; i++, ext++)
- if ((ext->Function == GRAPHICS_EXT_FUNC_CODE) &&
- (ext->Bytes[0] & 1)) { // there is a transparent color
- return ext->Bytes[3] == 0 ?
- 255 : // exception
- ext->Bytes[3];
- }
-
- return -1;
+ int i;
+ ExtensionBlock* ext = gft->SavedImages[0].ExtensionBlocks;
+
+ for (i=0; i < gft->SavedImages[0].ExtensionBlockCount; i++, ext++)
+ if ((ext->Function == GRAPHICS_EXT_FUNC_CODE) &&
+ (ext->Bytes[0] & 1)) { // there is a transparent color
+ return ext->Bytes[3] == 0 ?
+ 255 : // exception
+ ext->Bytes[3];
+ }
+
+ return -1;
}
TAG *MovieStart(SWF * swf, float framerate, int dx, int dy)
swf->movieSize.ymax = dy * 20;
t = swf->firstTag = swf_InsertTag(NULL, ST_SETBACKGROUNDCOLOR);
-
+
rgb.r = rgb.g = rgb.b = rgb.a = 0x00;
-
+
//rgb.g = 0xff; //<--- handy for testing alpha conversion
swf_SetRGB(t, &rgb);
t = swf_InsertTag(t, ST_END);
if ((!isatty(so)) && (!sname))
- f = so;
+ f = so;
else {
- if (!sname)
- sname = "output.swf";
- f = open(sname,O_WRONLY|O_CREAT|O_TRUNC|O_BINARY, 0644);
+ if (!sname)
+ sname = "output.swf";
+ f = open(sname, O_WRONLY|O_CREAT|O_TRUNC|O_BINARY, 0644);
}
- if(global.do_cgi) {
- if FAILED(swf_WriteCGI(swf)) fprintf(stderr,"WriteCGI() failed.\n");
+ if (global.do_cgi) {
+ if FAILED(swf_WriteCGI(swf)) fprintf(stderr,"WriteCGI() failed.\n");
} else {
- if(global.version >= 6) {
- if (swf_WriteSWC(f, swf)<0)
- fprintf(stderr, "Unable to write output file: %s\n", sname);
- } else {
- if (swf_WriteSWF(f, swf)<0)
+ if (global.version >= 6) {
+ if (swf_WriteSWC(f, swf)<0)
+ fprintf(stderr, "Unable to write output file: %s\n", sname);
+ } else {
+ if (swf_WriteSWF(f, swf)<0)
fprintf(stderr, "Unable to write output file: %s\n", sname);
- }
- if (f != so)
- close(f);
+ }
+ if (f != so)
+ close(f);
}
swf_FreeTags(swf);
return 0;
}
-TAG *MovieAddFrame(SWF * swf, TAG * t, char *sname, int id)
+TAG *MovieAddFrame(SWF * swf, TAG * t, char *sname, int id, int imgidx)
{
SHAPE *s;
SRECT r;
U8 *imagedata, *from, *to;
RGBA* pal;
-
+
struct gif_header header;
int i, j, bgcolor, numcolors = 0, alphapalette = 0;
int bpp; // byte per pixel
int swf_width, padlen;
-
+
ColorMapObject* colormap;
GifColorType c;
- int interlacedOffset[] = { 0, 4, 2, 1 }; // The way Interlaced image should
- int interlacedJumps[] = { 8, 8, 4, 2 }; // be read - offsets and jumps...
-
+ int interlacedOffset[] = { 0, 4, 2, 1 };// The way Interlaced image should
+ int interlacedJumps[] = { 8, 8, 4, 2 }; // be read - offsets and jumps...
+
FILE *fi;
- GifFileType* gft;
-
+ GifFileType* gft;
+
if ((fi = fopen(sname, "rb")) == NULL) {
- if (VERBOSE(1))
- fprintf(stderr, "Read access failed: %s\n", sname);
- return t;
+ if (VERBOSE(1))
+ fprintf(stderr, "Read access failed: %s\n", sname);
+ return t;
}
-
- if((gft = DGifOpenFileName(sname)) == NULL) {
+
+ if ((gft = DGifOpenFileName(sname)) == NULL) {
fprintf(stderr, "%s is not a GIF file!\n", sname);
return t;
}
- if(DGifSlurp(gft) != GIF_OK) {
+ if (DGifSlurp(gft) != GIF_OK) {
PrintGifError();
return t;
}
header.height = gft->SHeight;
pal = (RGBA*)malloc(256*sizeof(RGBA));
- memset(pal,0,256*sizeof(RGBA));
-
+ memset(pal, 0, 256*sizeof(RGBA));
+
// Local colormap has precedence over Global colormap
colormap = gft->Image.ColorMap ? gft->Image.ColorMap : gft->SColorMap;
numcolors = colormap->ColorCount;
alphapalette = getTransparentColor(gft);
bpp = (alphapalette >= 0 ? 4 : 3);
- // bgColor is the background color to fill the bitmap with
- // if an image is smaller than screen coordinates
- if (gft->SColorMap) { // There is a GlobalColorMap
- bgcolor = gft->SBackGroundColor; // The BackGroundColor is meaningful
- } else {
- if (alphapalette >= 0) // There is a transparency color
- bgcolor = alphapalette; // set the bgColor to tranparent
- else
- bgcolor = 0; // Don't know what to do here.
- // If this doesn't work, we could
- // create a new color and set the
- // alpha-channel to transparent
- // (unless we are using all the 256
- // colors, in which case either we
- // give up, or move to 16-bits palette
- }
-
- for(i=0; i<numcolors; i++) {
+ // bgcolor is the background color to fill the bitmap
+ // if DWORD-aligned imagebuffer is bigger than the actual image
+ if (gft->SColorMap) { // There is a GlobalColorMap
+ bgcolor = gft->SBackGroundColor;// The BackGroundColor is meaningful
+ } else
+ if (alphapalette >= 0) // There is a transparency color
+ bgcolor = alphapalette; // set the bgColor to tranparent
+ else
+ bgcolor = 0; // Don't know what to do here.
+ // If this doesn't work, we could
+ // create a new color and set the
+ // alpha-channel to transparent
+ // (unless we are using all the 256
+ // colors, in which case either we
+ // give up, or move to 16-bits palette
+
+ for (i=0; i<numcolors; i++) {
c = colormap->Colors[i];
- if(i == alphapalette)
- pal[i].r = pal[i].g = pal[i].b = pal[i].a = 0; // Fully transparent
+ if (i == alphapalette)
+ pal[i].r = pal[i].g = pal[i].b = pal[i].a = 0;// Fully transparent
else {
- pal[i].r = c.Red;
- pal[i].g = c.Green;
- pal[i].b = c.Blue;
- pal[i].a = 255; // Fully opaque
- }
+ pal[i].r = c.Red;
+ pal[i].g = c.Green;
+ pal[i].b = c.Blue;
+ pal[i].a = 255; // Fully opaque
+ }
}
-
- if(alphapalette >= 0)
- t = swf_InsertTag(t, ST_DEFINEBITSLOSSLESS2);
+
+ if (alphapalette >= 0) // There is a transparency color
+ t = swf_InsertTag(t, ST_DEFINEBITSLOSSLESS2);
else
- t = swf_InsertTag(t, ST_DEFINEBITSLOSSLESS);
-
- swf_SetU16(t, id); // id
-
- // Ah! The Flash specs says scanlines must be DWORD ALIGNED!
- // (but image width is the correct number of pixels)
- swf_width = BYTES_PER_SCANLINE(header.width);
-
- if ((imagedata = (U8 *)malloc(swf_width*header.height)) == NULL) {
- fprintf(stderr, "Failed to allocate memory required, aborted.");
- exit(2);
- }
- to = imagedata;
- from = (U8 *)gft->SavedImages[0].RasterBits;
-
- if (swf_width == header.width) {
- // we are all nicely aligned and don't need to move the bitmap around.
- // Just copy the bits into the image buffer.*/
- if (!gft->Image.Interlace)
- memcpy(to, from, header.width*header.height);
- else // Need to perform 4 passes on the interlaced images
- for (i = 0; i < 4; i++)
- for (j = interlacedOffset[i]; j < header.height;
- j += interlacedJumps[i], from += header.width)
- memcpy(to + header.width*j, from, header.width);
- } else {
- padlen = swf_width - header.width;
-
- // here we need to pad the scanline
- if (!gft->Image.Interlace) {
- for (i=0; i < header.height; i++, from+=header.width, to+=swf_width) {
- memcpy(to, from, header.width);
- memset(to + header.width, bgcolor, padlen);
- }
- } else { // Need to perform 4 passes on the interlaced images
- for (i = 0; i < 4; i++)
- for (j = interlacedOffset[i]; j < header.height;
- j += interlacedJumps[i], from += header.width) {
- memcpy(to + swf_width*j, from, header.width);
- memset(to + swf_width*j, bgcolor, padlen);
- }
- }
- }
+ t = swf_InsertTag(t, ST_DEFINEBITSLOSSLESS);
+
+ swf_SetU16(t, id); // id
+
+ // Ah! The Flash specs says scanlines must be DWORD ALIGNED!
+ // (but image width is the correct number of pixels)
+ swf_width = BYTES_PER_SCANLINE(header.width);
+ if ((imagedata = (U8 *)malloc(swf_width*header.height)) == NULL) {
+ fprintf(stderr, "Failed to allocate memory required, aborted.");
+ exit(2);
+ }
+ to = imagedata;
+ from = (U8 *)gft->SavedImages[imgidx].RasterBits;
+
+ if (swf_width == header.width) {
+ // we are all nicely aligned and don't need to move the bitmap around.
+ // Just copy the bits into the image buffer.
+ if (!gft->Image.Interlace)
+ memcpy(to, from, header.width*header.height);
+ else // Need to perform 4 passes on the interlaced images
+ for (i = 0; i < 4; i++)
+ for (j = interlacedOffset[i]; j < header.height;
+ j += interlacedJumps[i], from += header.width)
+ memcpy(to + header.width*j, from, header.width);
+ } else {
+ padlen = swf_width - header.width;
+
+ // here we need to pad the scanline
+ if (!gft->Image.Interlace) {
+ for (i=0; i < header.height; i++, from+=header.width, to+=swf_width) {
+ memcpy(to, from, header.width);
+ memset(to + header.width, bgcolor, padlen);
+ }
+ } else { // Need to perform 4 passes on the interlaced images
+ for (i = 0; i < 4; i++)
+ for (j = interlacedOffset[i]; j < header.height;
+ j += interlacedJumps[i], from += header.width) {
+ memcpy(to + swf_width*j, from, header.width);
+ memset(to + swf_width*j, bgcolor, padlen);
+ }
+ }
+ }
swf_SetLosslessBitsIndexed(t,header.width,header.height,imagedata,pal,256);
+
t = swf_InsertTag(t, ST_DEFINESHAPE);
swf_ShapeNew(&s);
m.sy = 20 * 0x10000;
fs = swf_ShapeAddBitmapFillStyle(s, &m, id, 0);
- swf_SetU16(t, id + 1); // id
+ swf_SetU16(t, id + 1); // id
r.xmin = r.ymin = 0;
r.xmax = header.width * 20;
swf_ShapeSetLine(t, s, 0, -r.ymax);
swf_ShapeSetEnd(t);
-
+
+ t = swf_InsertTag(t, ST_REMOVEOBJECT2);
+ swf_SetU16(t, 1); // depth
+
t = swf_InsertTag(t, ST_PLACEOBJECT2);
swf_GetMatrix(NULL, &m);
free(pal);
free(imagedata);
DGifCloseFile(gft);
-
+
return t;
}
GifFileType* gft;
if (!s)
- exit(2);
+ exit(2);
(*realname) = s;
strcpy(s, fname);
// Check whether file exists (with typical extensions)
if ((fi = fopen(s, "rb")) == NULL) {
- sprintf(s, "%s.gif", fname);
- if ((fi = fopen(s, "rb")) == NULL) {
- sprintf(s, "%s.GIF", fname);
- if ((fi = fopen(s, "rb")) == NULL) {
- sprintf(s, "%s.Gif", fname);
- if ((fi = fopen(s, "rb")) == NULL)
- fprintf(stderr, "Couldn't open %s!\n", fname);
- return -1;
- }
- }
+ sprintf(s, "%s.gif", fname);
+ if ((fi = fopen(s, "rb")) == NULL) {
+ sprintf(s, "%s.GIF", fname);
+ if ((fi = fopen(s, "rb")) == NULL) {
+ sprintf(s, "%s.Gif", fname);
+ if ((fi = fopen(s, "rb")) == NULL) {
+ fprintf(stderr, "Couldn't open %s!\n", fname);
+ return -1;
+ }
+ }
+ }
}
fclose(fi);
-
- if((gft = DGifOpenFileName(s)) == NULL) {
+
+ if ((gft = DGifOpenFileName(s)) == NULL) {
fprintf(stderr, "%s is not a GIF file!\n", fname);
return -1;
}
- if(DGifSlurp(gft) != GIF_OK) {
+ if (DGifSlurp(gft) != GIF_OK) {
PrintGifError();
return -1;
}
-
+
if (global.max_image_width < gft->SWidth)
global.max_image_width = gft->SWidth;
if (global.max_image_height < gft->SHeight)
global.max_image_height = gft->SHeight;
- DGifCloseFile(gft);
+ global.imagecount = gft->ImageCount;
+
+ DGifCloseFile(gft);
return 0;
}
{
int res = 0;
if (arg[1])
- res = -1;
+ res = -1;
else
- switch (arg[0]) {
- case 'r':
- if (val)
- global.framerate = atof(val);
- if ((global.framerate < 1.0/256) ||(global.framerate >= 256.0)) {
- if (VERBOSE(1))
- fprintf(stderr,
- "Error: You must specify a valid framerate between 1/256 and 255.\n");
- exit(1);
- }
- res = 1;
- break;
-
- case 'o':
- if (val)
- global.outfile = val;
- res = 1;
- break;
-
- case 'z':
- global.version = 6;
- res = 0;
- break;
-
- case 'C':
- global.do_cgi = 1;
- break;
-
- case 'v':
- if (val)
- global.verbose = atoi(val);
- res = 1;
- break;
-
- case 'X':
- if (val)
- global.force_width = atoi(val);
- res = 1;
- break;
-
- case 'Y':
- if (val)
- global.force_height = atoi(val);
- res = 1;
- break;
-
- case 'V':
- printf("gif2swf - part of %s %s\n", PACKAGE, VERSION);
- exit(0);
-
- default:
- res = -1;
- break;
- }
+ switch (arg[0]) {
+ case 'r':
+ if (val)
+ global.framerate = atof(val);
+ if ((global.framerate < 1.0/256) ||(global.framerate >= 256.0)) {
+ if (VERBOSE(1))
+ fprintf(stderr,
+ "Error: You must specify a valid framerate between 1/256 and 255.\n");
+ exit(1);
+ }
+ res = 1;
+ break;
+
+ case 'o':
+ if (val)
+ global.outfile = val;
+ res = 1;
+ break;
+
+ case 'z':
+ global.version = 6;
+ res = 0;
+ break;
+
+ case 'C':
+ global.do_cgi = 1;
+ break;
+
+ case 'v':
+ if (val)
+ global.verbose = atoi(val);
+ res = 1;
+ break;
+
+ case 'X':
+ if (val)
+ global.force_width = atoi(val);
+ res = 1;
+ break;
+
+ case 'Y':
+ if (val)
+ global.force_height = atoi(val);
+ res = 1;
+ break;
+
+ case 'V':
+ printf("gif2swf - part of %s %s\n", PACKAGE, VERSION);
+ exit(0);
+
+ default:
+ res = -1;
+ break;
+ }
if (res < 0) {
- if (VERBOSE(1))
- fprintf(stderr, "Unknown option: -%s\n", arg);
- exit(1);
- return 0;
+ if (VERBOSE(1))
+ fprintf(stderr, "Unknown option: -%s\n", arg);
+ exit(1);
+ return 0;
}
return res;
}
return args_long2shortoption(options, name, val);
}
-int args_callback_command(char *arg, char *next) // actually used as filename
+int args_callback_command(char *arg, char *next) // actually used as filename
{
char *s;
if (CheckInputFile(arg, &s) < 0) {
- if (VERBOSE(1))
- fprintf(stderr, "Error opening input file: %s\n", arg);
- free(s);
+ if (VERBOSE(1))
+ fprintf(stderr, "Error opening input file: %s\n", arg);
+ free(s);
} else {
- image[global.nfiles].filename = s;
- global.nfiles++;
- if (global.nfiles >= MAX_INPUT_FILES) {
- if (VERBOSE(1))
- fprintf(stderr, "Error: Too many input files.\n");
- exit(1);
- }
+ image[global.nfiles].filename = s;
+ global.nfiles++;
+ if (global.nfiles >= MAX_INPUT_FILES) {
+ if (VERBOSE(1))
+ fprintf(stderr, "Error: Too many input files.\n");
+ exit(1);
+ }
}
-
+
return 0;
}
{
SWF swf;
TAG *t;
-
+
memset(&global, 0x00, sizeof(global));
global.framerate = 1.0;
global.version = 4;
processargs(argc, argv);
-
- if(global.nfiles<=0) {
- fprintf(stderr, "No gif files found in arguments\n");
- return 1;
+
+ if (global.nfiles<=0) {
+ fprintf(stderr, "No gif files found in arguments\n");
+ return 1;
}
if (VERBOSE(2))
- fprintf(stderr, "Processing %i file(s)...\n", global.nfiles);
+ fprintf(stderr, "Processing %i file(s)...\n", global.nfiles);
+
+ if (global.imagecount > 1) // multi-image GIF?
+ global.framerate = 12.0; // default value(1.0) is not handy for animation GIFs
t = MovieStart(&swf, global.framerate,
- global.force_width ? global.force_width : global.max_image_width,
- global.force_height ? global.force_height : global.max_image_height);
+ global.force_width ? global.force_width : global.max_image_width,
+ global.force_height ? global.force_height : global.max_image_height);
{
- int i;
- for (i = 0; i < global.nfiles; i++) {
- if (VERBOSE(3))
- fprintf(stderr, "[%03i] %s\n", i,
- image[i].filename);
- t = MovieAddFrame(&swf, t, image[i].filename, (i * 2) + 1);
- free(image[i].filename);
- }
+ int i, j;
+ for (i = 0; i < global.nfiles; i++) {
+ if (VERBOSE(3))
+ fprintf(stderr, "[%03i] %s\n", i,
+ image[i].filename);
+ t = MovieAddFrame(&swf, t, image[i].filename, (i*2)+1, 0);
+ for (j = 2; j <= global.imagecount; j++)
+ t = MovieAddFrame(&swf, t, image[i].filename, (j*2)-1, j-1);
+ free(image[i].filename);
+ }
}
MovieFinish(&swf, t, global.outfile);
git.asbjorn.biz / swftools.git / commitdiff