Function stbi__out_gif_code

lite/example/cpp_example/mge/cv/stb_image.h:7297–7332

}

static void stbi__out_gif_code(stbi__gif* g, stbi__uint16 code) {
    stbi_uc *p, *c;
    int idx;

    // recurse to decode the prefixes, since the linked-list is backwards,
    // and working backwards through an interleaved image would be nasty
    if (g->codes[code].prefix >= 0)
        stbi__out_gif_code(g, g->codes[code].prefix);

    if (g->cur_y >= g->max_y)
        return;

    idx = g->cur_x + g->cur_y;
    p = &g->out[idx];
    g->history[idx / 4] = 1;

    c = &g->color_table[g->codes[code].suffix * 4];
    if (c[3] > 128) {  // don't render transparent pixels;
        p[0] = c[2];
        p[1] = c[1];
        p[2] = c[0];
        p[3] = c[3];
    }
    g->cur_x += 4;

    if (g->cur_x >= g->max_x) {
        g->cur_x = g->start_x;
        g->cur_y += g->step;

        while (g->cur_y >= g->max_y && g->parse > 0) {
            g->step = (1 << g->parse) * g->line_size;
            g->cur_y = g->start_y + (g->step >> 1);
            --g->parse;
        }
    }
}

static stbi_uc* stbi__process_gif_raster(stbi__context* s, stbi__gif* g) {
    stbi_uc lzw_cs;