Function stbi__psd_load

lite/example/cpp_example/mge/cv/stb_image.h:6739–6949

}

static void* stbi__psd_load(
        stbi__context* s, int* x, int* y, int* comp, int req_comp,
        stbi__result_info* ri, int bpc) {
    int pixelCount;
    int channelCount, compression;
    int channel, i;
    int bitdepth;
    int w, h;
    stbi_uc* out;
    STBI_NOTUSED(ri);

    // Check identifier
    if (stbi__get32be(s) != 0x38425053)  // "8BPS"
        return stbi__errpuc("not PSD", "Corrupt PSD image");

    // Check file type version.
    if (stbi__get16be(s) != 1)
        return stbi__errpuc("wrong version", "Unsupported version of PSD image");

    // Skip 6 reserved bytes.
    stbi__skip(s, 6);

    // Read the number of channels (R, G, B, A, etc).
    channelCount = stbi__get16be(s);
    if (channelCount < 0 || channelCount > 16)
        return stbi__errpuc(
                "wrong channel count", "Unsupported number of channels in PSD image");

    // Read the rows and columns of the image.
    h = stbi__get32be(s);
    w = stbi__get32be(s);

    if (h > STBI_MAX_DIMENSIONS)
        return stbi__errpuc("too large", "Very large image (corrupt?)");
    if (w > STBI_MAX_DIMENSIONS)
        return stbi__errpuc("too large", "Very large image (corrupt?)");

    // Make sure the depth is 8 bits.
    bitdepth = stbi__get16be(s);
    if (bitdepth != 8 && bitdepth != 16)
        return stbi__errpuc(
                "unsupported bit depth", "PSD bit depth is not 8 or 16 bit");

    // Make sure the color mode is RGB.
    // Valid options are:
    //   0: Bitmap
    //   1: Grayscale
    //   2: Indexed color
    //   3: RGB color
    //   4: CMYK color
    //   7: Multichannel
    //   8: Duotone
    //   9: Lab color
    if (stbi__get16be(s) != 3)
        return stbi__errpuc("wrong color format", "PSD is not in RGB color format");

    // Skip the Mode Data.  (It's the palette for indexed color; other info for other
    // modes.)