Read GIF's repeat information from file.
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99dfd14919
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078136d217
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@ -43,7 +43,7 @@ static const float zoom_levels[] = {
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enum {
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GIF_DELAY = 100, /* delay time (in ms) */
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GIF_AUTOPLAY = 1, /* autoplay when loaded [0/1] */
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GIF_LOOP = 0 /* endless loop [0/1] */
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GIF_LOOP = -1 /* endless loop [0 / 1 / -1=as specified in file] */
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};
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/* gamma correction: the user-visible ranges [-GAMMA_RANGE, 0] and
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25
image.c
25
image.c
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@ -83,6 +83,8 @@ void img_init(img_t *img, win_t *win)
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img->alpha = !RENDER_WHITE_ALPHA;
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img->multi.cap = img->multi.cnt = 0;
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img->multi.animate = false;
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img->multi.anim_repeats = -1;
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img->multi.repeats_currently_left = 0;
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img->cmod = imlib_create_color_modifier();
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img->gamma = MIN(MAX(options->gamma, -GAMMA_RANGE), GAMMA_RANGE);
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@ -144,6 +146,8 @@ bool img_load_gif(img_t *img, const fileinfo_t *file)
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}
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img->multi.cnt = 0;
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img->multi.sel = 0;
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img->multi.anim_repeats = -1;
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img->multi.repeats_currently_left = 0;
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#if defined(GIFLIB_MAJOR) && GIFLIB_MAJOR >= 5
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gif = DGifOpenFileName(file->path, NULL);
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@ -170,7 +174,7 @@ bool img_load_gif(img_t *img, const fileinfo_t *file)
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DGifGetExtension(gif, &ext_code, &ext);
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while (ext) {
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if (ext_code == 0xf9) {
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if (ext_code == 0xf9) { /*Graphics Control Extension*/
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if (ext[1] & 1)
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transp = (int) ext[4];
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else
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@ -181,6 +185,16 @@ bool img_load_gif(img_t *img, const fileinfo_t *file)
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delay = MAX(delay, MIN_GIF_DELAY);
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disposal = (unsigned int) ext[1] >> 2 & 0x7;
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} else if (ext_code == 0xff) { /*Application Extension*/
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if(ext[0] == 11 && memcmp(ext+1, "NETSCAPE2.0", 11) == 0) {
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DGifGetExtensionNext(gif, &ext);
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if(ext && ext[0] == 3 && ext[1] == 1) {
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img->multi.repeats_currently_left =
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img->multi.anim_repeats =
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((unsigned int) ext[3] << 8 | (unsigned int) ext[2]);
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}
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}
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}
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ext = NULL;
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DGifGetExtensionNext(gif, &ext);
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@ -797,8 +811,15 @@ bool img_frame_animate(img_t *img, bool restart)
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return false;
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if (img->multi.sel + 1 >= img->multi.cnt) {
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if (restart || GIF_LOOP) {
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if (GIF_LOOP == 1 || (GIF_LOOP == -1 && img->multi.anim_repeats == 0) ) {
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img_frame_goto(img, 0);
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} else if(restart) {
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img_frame_goto(img, 0);
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img->multi.repeats_currently_left =
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(img->multi.anim_repeats != -1 ? img->multi.anim_repeats : 0);
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} else if(GIF_LOOP == -1 && img->multi.repeats_currently_left != 0) {
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img_frame_goto(img, 0);
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--img->multi.repeats_currently_left;
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} else {
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img->multi.animate = false;
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return false;
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