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gif loader 

SVN revision: 21951
This commit is contained in:
doursse 2006-04-08 12:22:18 +00:00 committed by doursse
parent a5f92ff318
commit c7224e4190
4 changed files with 390 additions and 3 deletions
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46
legacy/evas/configure.in
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@ -144,11 +144,9 @@ if test "x$have_fontconfig" = "xyes"; then
[
have_fontconfig="yes"
AC_DEFINE(HAVE_FONTCONFIG, 1, [have fontconfig searching capabilities])
AC_MSG_RESULT(yes)
],
[
have_fontconfig="no"
AC_MSG_RESULT(no)
]
)
else
@ -647,6 +645,46 @@ AM_CONDITIONAL(BUILD_ENGINE_XRENDER_XCB, test "x$have_evas_xrender_xcb" = "xyes"
#####################################################################
## Image loaders
#######################################
## GIF
have_gif="no";
AC_CHECK_HEADER(gif_lib.h,
[ have_gif="yes" ],
[ have_gif="no" ]
)
AC_MSG_CHECKING(whether to enable gif image loader)
AC_ARG_ENABLE(image-loader-gif,
[ --enable-image-loader-gif enable GIF image loader], [
if test x"$enableval" = x"yes" ; then
AC_MSG_RESULT(yes)
have_gif="yes"
else
AC_MSG_RESULT(no)
have_gif="no"
fi
], [
AC_MSG_RESULT($have_gif)
]
)
if test "x$have_gif" = "xyes"; then
AC_CHECK_HEADER(gif_lib.h,
[ AC_CHECK_LIB(gif, DGifOpenFileName,
[ gif_libs="-lgif"
have_gif="yes" ],
[ AC_CHECK_LIB(ungif, DGifOpenFileName,
[ gif_libs="-lungif"
have_gif="yes" ],
[ have_gif="no" ]) ]) ],
[ have_gif="no" ]
)
fi
if test "x$have_gif" = "xyes"; then
AC_DEFINE(BUILD_LOADER_GIF, 1, [GIF Image Loader Support])
gif_cflags=""
fi
AM_CONDITIONAL(BUILD_LOADER_GIF, test x$have_gif = xyes)
#######################################
## PNG
have_png="no";
@ -1652,6 +1690,8 @@ AC_SUBST(qt_cflags)
AC_SUBST(qt_libs)
AC_SUBST(qt_moc)
AC_SUBST(gif_cflags)
AC_SUBST(gif_libs)
AC_SUBST(png_cflags)
AC_SUBST(png_libs)
AC_SUBST(jpeg_cflags)
@ -1723,6 +1763,7 @@ src/modules/engines/xrender_xcb/Makefile
src/modules/loaders/Makefile
src/modules/loaders/edb/Makefile
src/modules/loaders/eet/Makefile
src/modules/loaders/gif/Makefile
src/modules/loaders/jpeg/Makefile
src/modules/loaders/png/Makefile
src/modules/savers/Makefile
@ -1773,6 +1814,7 @@ echo " XRender Xcb.............: $have_evas_xrender_xcb"
# FIXME: xrender engine to be written
echo
echo "Image Loaders:"
echo " GIF.....................: $have_gif"
echo " PNG.....................: $have_png"
echo " JPEG....................: $have_jpeg"
echo " EET.....................: $have_eet"

6
legacy/evas/src/modules/loaders/Makefile.am
View File

@ -8,6 +8,10 @@ if BUILD_LOADER_EET
eet_subdir = eet
endif
if BUILD_LOADER_GIF
gif_subdir = gif
endif
if BUILD_LOADER_JPEG
jpeg_subdir = jpeg
endif
@ -16,4 +20,4 @@ if BUILD_LOADER_PNG
png_subdir = png
endif
SUBDIRS = $(edb_subdir) $(eet_subdir) $(jpeg_subdir) $(png_subdir)
SUBDIRS = $(edb_subdir) $(eet_subdir) $(gif_subdir) $(jpeg_subdir) $(png_subdir)

24
legacy/evas/src/modules/loaders/gif/Makefile.am Normal file
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@ -0,0 +1,24 @@
## Process this file with automake to produce Makefile.in
AUTOMAKE_OPTIONS = 1.4 foreign
# A list of all the files in the current directory which can be regenerated
MAINTAINERCLEANFILES = Makefile.in
INCLUDES = -I. \
-I$(top_srcdir)/src/lib \
-I$(top_srcdir)/src/lib/include \
@FREETYPE_CFLAGS@ @gif_cflags@
pkgdir = $(libdir)/evas/modules/loaders/gif/$(MODULE_ARCH)
pkg_LTLIBRARIES = module.la
module_la_SOURCES = evas_image_load_gif.c
module_la_LIBADD = @gif_libs@ $(top_builddir)/src/lib/libevas.la
module_la_LDFLAGS = -module -avoid-version -L$(top_builddir)/src/lib -L$(top_builddir)/src/lib/.libs
module_la_DEPENDENCIES = $(top_builddir)/config.h
EXTRA_DIST = evas_image_load_gif.c

317
legacy/evas/src/modules/loaders/gif/evas_image_load_gif.c Normal file
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@ -0,0 +1,317 @@
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <gif_lib.h>
#include "evas_common.h"
#include "evas_private.h"
int evas_image_load_file_head_gif(RGBA_Image *im, const char *file, const char *key);
int evas_image_load_file_data_gif(RGBA_Image *im, const char *file, const char *key);
Evas_Image_Load_Func evas_image_load_gif_func =
{
evas_image_load_file_head_gif,
evas_image_load_file_data_gif
};
int
evas_image_load_file_head_gif(RGBA_Image *im, const char *file, const char *key)
{
int fd;
GifFileType *gif;
GifRecordType rec;
int done;
int w;
int h;
int alpha;
done = 0;
w = 0;
h = 0;
alpha = -1;
if (!file) return 0;
#ifndef __EMX__
fd = open(file, O_RDONLY);
#else
fd = open(file, O_RDONLY | O_BINARY);
#endif
if (fd < 0)
return 0;
gif = DGifOpenFileHandle(fd);
if (!gif)
{
close(fd);
return 0;
}
do
{
if (DGifGetRecordType(gif, &rec) == GIF_ERROR)
{
/* PrintGifError(); */
rec = TERMINATE_RECORD_TYPE;
}
if ((rec == IMAGE_DESC_RECORD_TYPE) && (!done))
{
if (DGifGetImageDesc(gif) == GIF_ERROR)
{
/* PrintGifError(); */
rec = TERMINATE_RECORD_TYPE;
}
w = gif->Image.Width;
h = gif->Image.Height;
done = 1;
}
else if (rec == EXTENSION_RECORD_TYPE)
{
int ext_code;
GifByteType *ext;
ext = NULL;
DGifGetExtension(gif, &ext_code, &ext);
while (ext)
{
if ((ext_code == 0xf9) && (ext[1] & 1) && (alpha < 0))
{
alpha = (int)ext[4];
}
ext = NULL;
DGifGetExtensionNext(gif, &ext);
}
}
} while (rec != TERMINATE_RECORD_TYPE);
if (alpha >= 0) im->flags |= RGBA_IMAGE_HAS_ALPHA;
if (!im->image)
im->image = evas_common_image_surface_new(im);
if (!im->image)
{
DGifCloseFile(gif);
return 0;
}
im->image->w = w;
im->image->h = h;
DGifCloseFile(gif);
return 1;
}
int
evas_image_load_file_data_gif(RGBA_Image *im, const char *file, const char *key)
{
int intoffset[] = { 0, 4, 2, 1 };
int intjump[] = { 8, 8, 4, 2 };
double per;
double per_inc;
int fd;
GifFileType *gif;
GifRecordType rec;
GifRowType *rows;
ColorMapObject *cmap;
DATA32 *ptr;
int done;
int last_y;
int last_per;
int w;
int h;
int alpha;
int i;
int j;
int bg;
int r;
int g;
int b;
rows = NULL;
per = 0.0;
done = 0;
last_y = 0;
last_per = 0;
w = 0;
h = 0;
alpha = -1;
if (!file) return 0;
#ifndef __EMX__
fd = open(file, O_RDONLY);
#else
fd = open(file, O_RDONLY | O_BINARY);
#endif
if (fd < 0)
return 0;
gif = DGifOpenFileHandle(fd);
if (!gif)
{
close(fd);
return 0;
}
do
{
if (DGifGetRecordType(gif, &rec) == GIF_ERROR)
{
/* PrintGifError(); */
rec = TERMINATE_RECORD_TYPE;
}
if ((rec == IMAGE_DESC_RECORD_TYPE) && (!done))
{
if (DGifGetImageDesc(gif) == GIF_ERROR)
{
/* PrintGifError(); */
rec = TERMINATE_RECORD_TYPE;
}
w = gif->Image.Width;
h = gif->Image.Height;
rows = malloc(h * sizeof(GifRowType *));
if (!rows)
{
DGifCloseFile(gif);
return 0;
}
for (i = 0; i < h; i++)
{
rows[i] = NULL;
}
for (i = 0; i < h; i++)
{
rows[i] = malloc(w * sizeof(GifPixelType));
if (!rows[i])
{
DGifCloseFile(gif);
for (i = 0; i < h; i++)
{
if (rows[i])
{
free(rows[i]);
}
}
free(rows);
return 0;
}
}
if (gif->Image.Interlace)
{
for (i = 0; i < 4; i++)
{
for (j = intoffset[i]; j < h; j += intjump[i])
{
DGifGetLine(gif, rows[j], w);
}
}
}
else
{
for (i = 0; i < h; i++)
{
DGifGetLine(gif, rows[i], w);
}
}
done = 1;
}
else if (rec == EXTENSION_RECORD_TYPE)
{
int ext_code;
GifByteType *ext;
ext = NULL;
DGifGetExtension(gif, &ext_code, &ext);
while (ext)
{
if ((ext_code == 0xf9) && (ext[1] & 1) && (alpha < 0))
{
alpha = (int)ext[4];
}
ext = NULL;
DGifGetExtensionNext(gif, &ext);
}
}
} while (rec != TERMINATE_RECORD_TYPE);
if (alpha >= 0) im->flags |= RGBA_IMAGE_HAS_ALPHA;
if (!im->image)
im->image = evas_common_image_surface_new(im);
if (!im->image)
{
DGifCloseFile(gif);
return 0;
}
im->image->w = w;
im->image->h = h;
evas_common_image_surface_alloc(im->image);
if (!im->image->data)
{
evas_common_image_surface_free(im->image);
DGifCloseFile(gif);
for (i = 0; i < h; i++)
{
free(rows[i]);
}
free(rows);
return 0;
}
bg = gif->SBackGroundColor;
cmap = (gif->Image.ColorMap ? gif->Image.ColorMap : gif->SColorMap);
ptr = im->image->data;
per_inc = 100.0 / (((double)w) * h);
for (i = 0; i < h; i++)
{
for (j = 0; j < w; j++)
{
if (rows[i][j] == alpha)
{
r = cmap->Colors[bg].Red;
g = cmap->Colors[bg].Green;
b = cmap->Colors[bg].Blue;
*ptr++ = 0x00ffffff & ((r << 16) | (g << 8) | b);
}
else
{
r = cmap->Colors[rows[i][j]].Red;
g = cmap->Colors[rows[i][j]].Green;
b = cmap->Colors[rows[i][j]].Blue;
*ptr++ = (0xff << 24) | (r << 16) | (g << 8) | b;
}
per += per_inc;
}
}
DGifCloseFile(gif);
for (i = 0; i < h; i++)
{
free(rows[i]);
}
free(rows);
return 1;
}
int module_open(Evas_Module *em)
{
if (!em) return 0;
em->functions = (void *)(&evas_image_load_gif_func);
return 1;
}
void module_close(void)
{
}
Evas_Module_Api evas_modapi =
{
EVAS_MODULE_API_VERSION,
EVAS_MODULE_TYPE_IMAGE_LOADER,
"gif",
"none"
};