ultrahdr: Add fuzz application for encode API

// Copyright 2023 The Android Open Source Project

//

// 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.

package {

    // See: http://go/android-license-faq

    // A large-scale-change added 'default_applicable_licenses' to import

    // all of the 'license_kinds' from "frameworks_native_license"

    // to get the below license kinds:

    //   SPDX-license-identifier-Apache-2.0

    default_applicable_licenses: ["frameworks_native_license"],

}

cc_defaults {

    name: "ultrahdr_fuzzer_defaults",

    host_supported: true,

    static_libs: ["liblog"],

    target: {

        darwin: {

            enabled: false,

        },

    },

    fuzz_config: {

        cc: [

            "android-media-fuzzing-reports@google.com",

        ],

        description: "The fuzzers target the APIs of jpeg hdr",

        service_privilege: "constrained",

        users: "multi_user",

    },

}

cc_fuzz {

    name: "ultrahdr_enc_fuzzer",

    defaults: ["ultrahdr_fuzzer_defaults"],

    srcs: [

        "ultrahdr_enc_fuzzer.cpp",

    ],

    shared_libs: [

        "libimage_io",

        "libjpeg",

        "liblog",

    ],

    static_libs: [

        "libjpegdecoder",

        "libjpegencoder",

        "libultrahdr",

        "libutils",

    ],

    fuzz_config: {

        fuzzed_code_usage: "future_version",

        vector: "local_no_privileges_required",

    },

}

/*

 * Copyright 2023 The Android Open Source Project

 *

 * 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.

 */

// System include files

#include <fuzzer/FuzzedDataProvider.h>

#include <algorithm>

#include <iostream>

#include <random>

#include <vector>

// User include files

#include "ultrahdr/gainmapmath.h"

#include "ultrahdr/jpegencoderhelper.h"

#include "utils/Log.h"

using namespace android::ultrahdr;

// constants

const int kMinWidth = 8;

const int kMaxWidth = 7680;

const int kMinHeight = 8;

const int kMaxHeight = 4320;

const int kScaleFactor = 4;

const int kJpegBlock = 16;

// Color gamuts for image data, sync with ultrahdr.h

const int kCgMin = ULTRAHDR_COLORGAMUT_UNSPECIFIED + 1;

const int kCgMax = ULTRAHDR_COLORGAMUT_MAX;

// Transfer functions for image data, sync with ultrahdr.h

const int kTfMin = ULTRAHDR_TF_UNSPECIFIED + 1;

const int kTfMax = ULTRAHDR_TF_MAX;

// Transfer functions for image data, sync with ultrahdr.h

const int kOfMin = ULTRAHDR_OUTPUT_UNSPECIFIED + 1;

const int kOfMax = ULTRAHDR_OUTPUT_MAX;

// quality factor

const int kQfMin = 0;

const int kQfMax = 100;

// seed

const unsigned kSeed = 0x7ab7;

class JpegHDRFuzzer {

public:

    JpegHDRFuzzer(const uint8_t* data, size_t size) : mFdp(data, size){};

    void process();

    void fillP010Buffer(uint16_t* data, int width, int height, int stride);

    void fill420Buffer(uint8_t* data, int size);

private:

    FuzzedDataProvider mFdp;

};

void JpegHDRFuzzer::fillP010Buffer(uint16_t* data, int width, int height, int stride) {

    uint16_t* tmp = data;

    std::vector<uint16_t> buffer(16);

    for (int i = 0; i < buffer.size(); i++) {

        buffer[i] = mFdp.ConsumeIntegralInRange<int>(0, (1 << 10) - 1);

    }

    for (int j = 0; j < height; j++) {

        for (int i = 0; i < width; i += buffer.size()) {

            memcpy(data + i, buffer.data(), std::min((int)buffer.size(), (width - i)));

            std::shuffle(buffer.begin(), buffer.end(), std::default_random_engine(kSeed));

        }

        tmp += stride;

    }

}

void JpegHDRFuzzer::fill420Buffer(uint8_t* data, int size) {

    std::vector<uint8_t> buffer(16);

    mFdp.ConsumeData(buffer.data(), buffer.size());

    for (int i = 0; i < size; i += buffer.size()) {

        memcpy(data + i, buffer.data(), std::min((int)buffer.size(), (size - i)));

        std::shuffle(buffer.begin(), buffer.end(), std::default_random_engine(kSeed));

    }

}

void JpegHDRFuzzer::process() {

    while (mFdp.remaining_bytes()) {

        struct jpegr_uncompressed_struct p010Img {};

        struct jpegr_uncompressed_struct yuv420Img {};

        struct jpegr_uncompressed_struct grayImg {};

        struct jpegr_compressed_struct jpegImgR {};

        struct jpegr_compressed_struct jpegImg {};

        struct jpegr_compressed_struct jpegGainMap {};

        // which encode api to select

        int muxSwitch = mFdp.ConsumeIntegralInRange<int>(0, 4);

        // quality factor

        int quality = mFdp.ConsumeIntegralInRange<int>(kQfMin, kQfMax);

        // hdr_tf

        auto tf = static_cast<ultrahdr_transfer_function>(

                mFdp.ConsumeIntegralInRange<int>(kTfMin, kTfMax));

        // p010 Cg

        auto p010Cg =

                static_cast<ultrahdr_color_gamut>(mFdp.ConsumeIntegralInRange<int>(kCgMin, kCgMax));

        // 420 Cg

        auto yuv420Cg =

                static_cast<ultrahdr_color_gamut>(mFdp.ConsumeIntegralInRange<int>(kCgMin, kCgMax));

        // hdr_of

        auto of = static_cast<ultrahdr_output_format>(

                mFdp.ConsumeIntegralInRange<int>(kOfMin, kOfMax));

        int width = mFdp.ConsumeIntegralInRange<int>(kMinWidth, kMaxWidth);

        width = (width >> 1) << 1;

        int height = mFdp.ConsumeIntegralInRange<int>(kMinHeight, kMaxHeight);

        height = (height >> 1) << 1;

        std::unique_ptr<uint16_t[]> bufferY = nullptr;

        std::unique_ptr<uint16_t[]> bufferUV = nullptr;

        std::unique_ptr<uint8_t[]> yuv420ImgRaw = nullptr;

        std::unique_ptr<uint8_t[]> grayImgRaw = nullptr;

        if (muxSwitch != 4) {

            // init p010 image

            bool isUVContiguous = mFdp.ConsumeBool();

            bool hasYStride = mFdp.ConsumeBool();

            int yStride = hasYStride ? mFdp.ConsumeIntegralInRange<int>(width, width + 128) : width;

            p010Img.width = width;

            p010Img.height = height;

            p010Img.colorGamut = p010Cg;

            p010Img.luma_stride = hasYStride ? yStride : 0;

            int bppP010 = 2;

            if (isUVContiguous) {

                size_t p010Size = yStride * height * 3 / 2;

                bufferY = std::make_unique<uint16_t[]>(p010Size);

                p010Img.data = bufferY.get();

                p010Img.chroma_data = nullptr;

                p010Img.chroma_stride = 0;

                fillP010Buffer(bufferY.get(), width, height, yStride);

                fillP010Buffer(bufferY.get() + yStride * height, width, height / 2, yStride);

            } else {

                int uvStride = mFdp.ConsumeIntegralInRange<int>(width, width + 128);

                size_t p010YSize = yStride * height;

                bufferY = std::make_unique<uint16_t[]>(p010YSize);

                p010Img.data = bufferY.get();

                fillP010Buffer(bufferY.get(), width, height, yStride);

                size_t p010UVSize = uvStride * p010Img.height / 2;

                bufferUV = std::make_unique<uint16_t[]>(p010UVSize);

                p010Img.chroma_data = bufferUV.get();

                p010Img.chroma_stride = uvStride;

                fillP010Buffer(bufferUV.get(), width, height / 2, uvStride);

            }

        } else {

            int map_width = width / kScaleFactor;

            int map_height = height / kScaleFactor;

            map_width = static_cast<size_t>(floor((map_width + kJpegBlock - 1) / kJpegBlock)) *

                    kJpegBlock;

            map_height = ((map_height + 1) >> 1) << 1;

            // init 400 image

            grayImg.width = map_width;

            grayImg.height = map_height;

            grayImg.colorGamut = ULTRAHDR_COLORGAMUT_UNSPECIFIED;

            const size_t graySize = map_width * map_height;

            grayImgRaw = std::make_unique<uint8_t[]>(graySize);

            grayImg.data = grayImgRaw.get();

            fill420Buffer(grayImgRaw.get(), graySize);

            grayImg.chroma_data = nullptr;

            grayImg.luma_stride = 0;

            grayImg.chroma_stride = 0;

        }

        if (muxSwitch > 0) {

            // init 420 image

            yuv420Img.width = width;

            yuv420Img.height = height;

            yuv420Img.colorGamut = yuv420Cg;

            const size_t yuv420Size = (yuv420Img.width * yuv420Img.height * 3) / 2;

            yuv420ImgRaw = std::make_unique<uint8_t[]>(yuv420Size);

            yuv420Img.data = yuv420ImgRaw.get();

            fill420Buffer(yuv420ImgRaw.get(), yuv420Size);

            yuv420Img.chroma_data = nullptr;

            yuv420Img.luma_stride = 0;

            yuv420Img.chroma_stride = 0;

        }

        // dest

        // 2 * p010 size as input data is random, DCT compression might not behave as expected

        jpegImgR.maxLength = std::max(8 * 1024 /* min size 8kb */, width * height * 3 * 2);

        auto jpegImgRaw = std::make_unique<uint8_t[]>(jpegImgR.maxLength);

        jpegImgR.data = jpegImgRaw.get();

//#define DUMP_PARAM

#ifdef DUMP_PARAM

        std::cout << "Api Select " << muxSwitch << std::endl;

        std::cout << "image dimensions " << width << " x " << height << std::endl;

        std::cout << "p010 color gamut " << p010Img.colorGamut << std::endl;

        std::cout << "p010 luma stride " << p010Img.luma_stride << std::endl;

        std::cout << "p010 chroma stride " << p010Img.chroma_stride << std::endl;

        std::cout << "420 color gamut " << yuv420Img.colorGamut << std::endl;

        std::cout << "quality factor " << quality << std::endl;

#endif

        JpegR jpegHdr;

        android::status_t status = android::UNKNOWN_ERROR;

        if (muxSwitch == 0) { // api 0

            jpegImgR.length = 0;

            status = jpegHdr.encodeJPEGR(&p010Img, tf, &jpegImgR, quality, nullptr);

        } else if (muxSwitch == 1) { // api 1

            jpegImgR.length = 0;

            status = jpegHdr.encodeJPEGR(&p010Img, &yuv420Img, tf, &jpegImgR, quality, nullptr);

        } else {

            // compressed img

            JpegEncoderHelper encoder;

            if (encoder.compressImage(yuv420Img.data, yuv420Img.width, yuv420Img.height, quality,

                                      nullptr, 0)) {

                jpegImg.length = encoder.getCompressedImageSize();

                jpegImg.maxLength = jpegImg.length;

                jpegImg.data = encoder.getCompressedImagePtr();

                jpegImg.colorGamut = yuv420Cg;

                if (muxSwitch == 2) { // api 2

                    jpegImgR.length = 0;

                    status = jpegHdr.encodeJPEGR(&p010Img, &yuv420Img, &jpegImg, tf, &jpegImgR);

                } else if (muxSwitch == 3) { // api 3

                    jpegImgR.length = 0;

                    status = jpegHdr.encodeJPEGR(&p010Img, &jpegImg, tf, &jpegImgR);

                } else if (muxSwitch == 4) { // api 4

                    jpegImgR.length = 0;

                    JpegEncoderHelper gainMapEncoder;

                    if (gainMapEncoder.compressImage(grayImg.data, grayImg.width, grayImg.height,

                                                     quality, nullptr, 0, true)) {

                        jpegGainMap.length = gainMapEncoder.getCompressedImageSize();

                        jpegGainMap.maxLength = jpegImg.length;

                        jpegGainMap.data = gainMapEncoder.getCompressedImagePtr();

                        jpegGainMap.colorGamut = ULTRAHDR_COLORGAMUT_UNSPECIFIED;

                        ultrahdr_metadata_struct metadata;

                        metadata.version = "1.3.1";

                        if (tf == ULTRAHDR_TF_HLG) {

                            metadata.maxContentBoost = kHlgMaxNits / kSdrWhiteNits;

                        } else if (tf == ULTRAHDR_TF_PQ) {

                            metadata.maxContentBoost = kPqMaxNits / kSdrWhiteNits;

                        } else {

                            metadata.maxContentBoost = 0;

                        }

                        metadata.minContentBoost = 1.0f;

                        status = jpegHdr.encodeJPEGR(&jpegImg, &jpegGainMap, &metadata, &jpegImgR);

                    }

                }

            }

        }

        if (status == android::OK) {

            jpegr_uncompressed_struct decodedJpegR;

            auto decodedRaw = std::make_unique<uint8_t[]>(width * height * 8);

            decodedJpegR.data = decodedRaw.get();

            jpegHdr.decodeJPEGR(&jpegImgR, &decodedJpegR,

                                mFdp.ConsumeFloatingPointInRange<float>(1.0, FLT_MAX), nullptr, of,

                                nullptr, nullptr);

            std::vector<uint8_t> iccData(0);

            std::vector<uint8_t> exifData(0);

            jpegr_info_struct info{0, 0, &iccData, &exifData};

            jpegHdr.getJPEGRInfo(&jpegImgR, &info);

        }

    }

}

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

    JpegHDRFuzzer fuzzHandle(data, size);

    fuzzHandle.process();

    return 0;

}