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@ -18,7 +18,11 @@
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#define _IMAGE_CONFIG
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <gif_lib.h>
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#include "image.h"
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#include "options.h"
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@ -36,6 +40,7 @@ void img_init(img_t *img, win_t *win) {
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if (img) {
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img->im = NULL;
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img->multi.cap = img->multi.cnt = 0;
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img->zoom = options->zoom;
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img->zoom = MAX(img->zoom, zoom_min);
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img->zoom = MIN(img->zoom, zoom_max);
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@ -50,7 +55,153 @@ void img_init(img_t *img, win_t *win) {
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}
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}
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int img_load_gif(img_t *img, const fileinfo_t *file) {
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DATA32 *data, *ptr;
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DATA32 *prev_frame = NULL;
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Imlib_Image *im;
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GifFileType *gif;
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GifRowType *rows = NULL;
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GifRecordType rec;
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ColorMapObject *cmap;
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int i, j;
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int bg, r, g, b;
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int w = 0, h = 0;
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int intoffset[] = { 0, 4, 2, 1 };
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int intjump[] = { 8, 8, 4, 2 };
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int transp = -1;
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int err = 0;
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if (img->multi.cap == 0) {
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img->multi.cap = 8;
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img->multi.frames = (Imlib_Image**)
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s_malloc(sizeof(Imlib_Image*) * img->multi.cap);
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}
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img->multi.cnt = 0;
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img->multi.cur = 0;
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gif = DGifOpenFileName(file->path);
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if (!gif) {
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warn("could not open gif file: %s", file->name);
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return 0;
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}
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do {
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if (DGifGetRecordType(gif, &rec) == GIF_ERROR) {
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warn("could not open gif file: %s", file->name);
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err = 1;
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break;
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}
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if (rec == EXTENSION_RECORD_TYPE) {
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int ext_code;
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GifByteType *ext = NULL;
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DGifGetExtension(gif, &ext_code, &ext);
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while (ext) {
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if ((ext_code == 0xf9) && (ext[1] & 1) && (transp < 0))
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transp = (int) ext[4];
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ext = NULL;
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DGifGetExtensionNext(gif, &ext);
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}
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} else if (rec == IMAGE_DESC_RECORD_TYPE) {
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if (DGifGetImageDesc(gif) == GIF_ERROR) {
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warn("could not open gif frame # %d: %s", img->multi.cnt, file->name);
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err = 1;
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break;
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}
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w = gif->Image.Width;
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h = gif->Image.Height;
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rows = (GifRowType*) s_malloc(h * sizeof(GifRowType));
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for (i = 0; i < h; i++)
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rows[i] = (GifRowType) s_malloc(w * sizeof(GifPixelType));
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if (gif->Image.Interlace) {
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for (i = 0; i < 4; i++) {
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for (j = intoffset[i]; j < h; j += intjump[i])
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DGifGetLine(gif, rows[j], w);
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}
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} else {
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for (i = 0; i < h; i++)
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DGifGetLine(gif, rows[i], w);
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}
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bg = gif->SBackGroundColor;
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cmap = gif->Image.ColorMap ? gif->Image.ColorMap : gif->SColorMap;
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ptr = data = (DATA32*) s_malloc(sizeof(DATA32) * w * h);
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if (img->multi.cnt) {
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imlib_context_set_image(img->multi.frames[img->multi.cnt - 1]);
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prev_frame = imlib_image_get_data_for_reading_only();
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}
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for (i = 0; i < h; i++) {
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for (j = 0; j < w; j++) {
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if (rows[i][j] == transp) {
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if (prev_frame) {
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*ptr++ = prev_frame[i * w + j];
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} else {
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r = cmap->Colors[bg].Red;
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g = cmap->Colors[bg].Green;
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b = cmap->Colors[bg].Blue;
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*ptr++ = 0x00ffffff & ((r << 16) | (g << 8) | b);
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}
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} else {
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r = cmap->Colors[rows[i][j]].Red;
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g = cmap->Colors[rows[i][j]].Green;
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b = cmap->Colors[rows[i][j]].Blue;
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*ptr++ = (0xff << 24) | (r << 16) | (g << 8) | b;
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}
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}
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}
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im = imlib_create_image_using_copied_data(w, h, data);
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for (i = 0; i < h; i++)
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free(rows[i]);
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free(rows);
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free(data);
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if (!im) {
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warn("could not open gif frame # %d: %s", img->multi.cnt, file->name);
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err = 1;
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break;
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}
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imlib_context_set_image(im);
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imlib_image_set_format("gif");
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if (transp >= 0)
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imlib_image_set_has_alpha(1);
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if (img->multi.cnt == img->multi.cap) {
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img->multi.cap *= 2;
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img->multi.frames = (Imlib_Image**)
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s_realloc(img->multi.frames,
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img->multi.cap * sizeof(Imlib_Image*));
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}
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img->multi.frames[img->multi.cnt++] = im;
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}
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} while (rec != TERMINATE_RECORD_TYPE);
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DGifCloseFile(gif);
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if (!err && img->multi.cnt > 1) {
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imlib_context_set_image(img->im);
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imlib_free_image();
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img->im = img->multi.frames[0];
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} else {
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for (i = 0; i < img->multi.cnt; i++) {
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imlib_context_set_image(img->multi.frames[i]);
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imlib_free_image();
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}
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img->multi.cnt = 0;
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}
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imlib_context_set_image(img->im);
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return !err;
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}
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int img_load(img_t *img, const fileinfo_t *file) {
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char *fmt;
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if (!img || !file || !file->name || !file->path)
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return 0;
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@ -63,6 +214,10 @@ int img_load(img_t *img, const fileinfo_t *file) {
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imlib_image_set_changes_on_disk();
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imlib_context_set_anti_alias(img->aa);
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fmt = imlib_image_format();
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if (!strcmp(fmt, "gif"))
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img_load_gif(img, file);
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img->scalemode = options->scalemode;
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img->re = 0;
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img->checkpan = 0;
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@ -191,6 +346,27 @@ void img_render(img_t *img, win_t *win) {
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win_draw(win);
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}
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int img_change_frame(img_t *img, int d) {
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if (!img || !img->multi.cnt || !d)
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return 0;
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d += img->multi.cur;
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if (d < 0)
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d = 0;
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else if (d >= img->multi.cnt)
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d = img->multi.cnt - 1;
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img->multi.cur = d;
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img->im = img->multi.frames[d];
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imlib_context_set_image(img->im);
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img->w = imlib_image_get_width();
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img->h = imlib_image_get_height();
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img->checkpan = 1;
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return 1;
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}
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int img_fit_win(img_t *img, win_t *win) {
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if (!img || !img->im || !win)
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return 0;
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