// Copyright 2020 Google LLC

//

// Licensed under the Apache License, Version 2.0 (the "License");

// you may not use this file except in compliance with the License.

// You may obtain a copy of the License at

//

//      http://www.apache.org/licenses/LICENSE-2.0

//

// Unless required by applicable law or agreed to in writing, software

// distributed under the License is distributed on an "AS IS" BASIS,

// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

// See the License for the specific language governing permissions and

// limitations under the License.

#include <stdint.h>

#include <gdk-pixbuf/gdk-pixbuf.h>

#define WIDTH 10

#define HEIGHT 20

#define ROWSTRIDE (WIDTH * 4)

int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {

    if (!(size >= WIDTH * HEIGHT * 4)) {

        return 0;

    }

    const gchar *profile;

    GdkPixbuf *pixbuf, *tmp, *tmp2;

    GBytes *bytes;

    bytes = g_bytes_new_static(data, size);

    pixbuf = g_object_new(GDK_TYPE_PIXBUF,

            "width", WIDTH,

            "height", HEIGHT,

            "rowstride", ROWSTRIDE,

            "bits-per-sample", 8,"n-channels", 3,

            "has-alpha", FALSE,

            "pixel-bytes", bytes,

            NULL);

    if (pixbuf == NULL) {

        g_bytes_unref(bytes);

        return 0;

    }

    tmp = gdk_pixbuf_scale_simple(pixbuf,

            gdk_pixbuf_get_width(pixbuf) / 4,

            gdk_pixbuf_get_height(pixbuf) / 4,

            GDK_INTERP_NEAREST);

    if (tmp) g_object_unref(tmp);

    unsigned int rot_amount = ((unsigned int) data[0]) % 4;

    tmp = gdk_pixbuf_rotate_simple(pixbuf, rot_amount * 90);

    if (tmp) g_object_unref(tmp);

    tmp = gdk_pixbuf_flip(pixbuf, TRUE);

    if (tmp) g_object_unref(tmp);

    tmp = gdk_pixbuf_composite_color_simple(pixbuf,

            gdk_pixbuf_get_width(pixbuf) / 4,

            gdk_pixbuf_get_height(pixbuf) / 4,

            GDK_INTERP_NEAREST,

            128,

            8,

            G_MAXUINT32,

            G_MAXUINT32/2);

    if (tmp) g_object_unref(tmp);

    char *buf = (char *) calloc(size + 1, sizeof(char));

    memcpy(buf, data, size);

    buf[size] = '\0';

    gdk_pixbuf_set_option(pixbuf, buf, buf);

    profile = gdk_pixbuf_get_option(pixbuf, buf);

    tmp = gdk_pixbuf_new_from_data(gdk_pixbuf_get_pixels(pixbuf),

            GDK_COLORSPACE_RGB,

            FALSE,

            gdk_pixbuf_get_bits_per_sample(pixbuf),

            gdk_pixbuf_get_width(pixbuf),

            gdk_pixbuf_get_height(pixbuf),

            gdk_pixbuf_get_rowstride(pixbuf),

            NULL,

            NULL);

    tmp2 = gdk_pixbuf_flip(tmp, TRUE);

    if (tmp) g_object_unref(tmp);

    free(buf);

    g_bytes_unref(bytes);

    g_object_unref(pixbuf);

    if (tmp2) g_object_unref(tmp2);

    return 0;

}