diff --git a/libs/ultrahdr/jpegr.cpp b/libs/ultrahdr/jpegr.cpp
new file mode 100644
index 0000000..8e1dc8c
--- /dev/null
+++ b/libs/ultrahdr/jpegr.cpp
@@ -0,0 +1,1080 @@
+/*
+ * Copyright 2022 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.
+ */
+
+#include <ultrahdr/jpegr.h>
+#include <ultrahdr/jpegencoderhelper.h>
+#include <ultrahdr/jpegdecoderhelper.h>
+#include <ultrahdr/gainmapmath.h>
+#include <ultrahdr/jpegrutils.h>
+#include <ultrahdr/multipictureformat.h>
+#include <ultrahdr/icc.h>
+
+#include <image_io/jpeg/jpeg_marker.h>
+#include <image_io/jpeg/jpeg_info.h>
+#include <image_io/jpeg/jpeg_scanner.h>
+#include <image_io/jpeg/jpeg_info_builder.h>
+#include <image_io/base/data_segment_data_source.h>
+#include <utils/Log.h>
+
+#include <map>
+#include <memory>
+#include <sstream>
+#include <string>
+#include <cmath>
+#include <condition_variable>
+#include <deque>
+#include <mutex>
+#include <thread>
+#include <unistd.h>
+
+using namespace std;
+using namespace photos_editing_formats::image_io;
+
+namespace android::ultrahdr {
+
+#define USE_SRGB_INVOETF_LUT 1
+#define USE_HLG_OETF_LUT 1
+#define USE_PQ_OETF_LUT 1
+#define USE_HLG_INVOETF_LUT 1
+#define USE_PQ_INVOETF_LUT 1
+#define USE_APPLY_GAIN_LUT 1
+
+#define JPEGR_CHECK(x)          \
+  {                             \
+    status_t status = (x);      \
+    if ((status) != NO_ERROR) { \
+      return status;            \
+    }                           \
+  }
+
+// The current JPEGR version that we encode to
+static const uint32_t kJpegrVersion = 1;
+
+// Map is quarter res / sixteenth size
+static const size_t kMapDimensionScaleFactor = 4;
+// JPEG block size.
+// JPEG encoding / decoding will require 8 x 8 DCT transform.
+// Width must be 8 dividable, and height must be 2 dividable.
+static const size_t kJpegBlock = 8;
+// JPEG compress quality (0 ~ 100) for gain map
+static const int kMapCompressQuality = 85;
+
+#define CONFIG_MULTITHREAD 1
+int GetCPUCoreCount() {
+  int cpuCoreCount = 1;
+#if CONFIG_MULTITHREAD
+#if defined(_SC_NPROCESSORS_ONLN)
+  cpuCoreCount = sysconf(_SC_NPROCESSORS_ONLN);
+#else
+  // _SC_NPROC_ONLN must be defined...
+  cpuCoreCount = sysconf(_SC_NPROC_ONLN);
+#endif
+#endif
+  return cpuCoreCount;
+}
+
+status_t JpegR::areInputImagesValid(jr_uncompressed_ptr uncompressed_p010_image,
+                                    jr_uncompressed_ptr uncompressed_yuv_420_image) {
+  if (uncompressed_p010_image == nullptr) {
+    return ERROR_JPEGR_INVALID_NULL_PTR;
+  }
+
+  if (uncompressed_p010_image->width % kJpegBlock != 0
+          || uncompressed_p010_image->height % 2 != 0) {
+    ALOGE("Image size can not be handled: %dx%d.",
+            uncompressed_p010_image->width, uncompressed_p010_image->height);
+    return ERROR_JPEGR_INVALID_INPUT_TYPE;
+  }
+
+  if (uncompressed_p010_image->luma_stride != 0
+          && uncompressed_p010_image->luma_stride < uncompressed_p010_image->width) {
+    ALOGE("Image stride can not be smaller than width, stride=%d, width=%d",
+                uncompressed_p010_image->luma_stride, uncompressed_p010_image->width);
+    return ERROR_JPEGR_INVALID_INPUT_TYPE;
+  }
+
+  if (uncompressed_yuv_420_image == nullptr) {
+    return NO_ERROR;
+  }
+
+  if (uncompressed_yuv_420_image->luma_stride != 0) {
+    ALOGE("Stride is not supported for YUV420 image");
+    return ERROR_JPEGR_UNSUPPORTED_FEATURE;
+  }
+
+  if (uncompressed_yuv_420_image->chroma_data != nullptr) {
+    ALOGE("Pointer to chroma plane is not supported for YUV420 image, chroma data must"
+          "be immediately after the luma data.");
+    return ERROR_JPEGR_UNSUPPORTED_FEATURE;
+  }
+
+  if (uncompressed_p010_image->width != uncompressed_yuv_420_image->width
+      || uncompressed_p010_image->height != uncompressed_yuv_420_image->height) {
+    ALOGE("Image resolutions mismatch: P010: %dx%d, YUV420: %dx%d",
+              uncompressed_p010_image->width,
+              uncompressed_p010_image->height,
+              uncompressed_yuv_420_image->width,
+              uncompressed_yuv_420_image->height);
+    return ERROR_JPEGR_RESOLUTION_MISMATCH;
+  }
+
+  return NO_ERROR;
+}
+
+/* Encode API-0 */
+status_t JpegR::encodeJPEGR(jr_uncompressed_ptr uncompressed_p010_image,
+                            ultrahdr_transfer_function hdr_tf,
+                            jr_compressed_ptr dest,
+                            int quality,
+                            jr_exif_ptr exif) {
+  if (uncompressed_p010_image == nullptr || dest == nullptr) {
+    return ERROR_JPEGR_INVALID_NULL_PTR;
+  }
+
+  if (quality < 0 || quality > 100) {
+    return ERROR_JPEGR_INVALID_INPUT_TYPE;
+  }
+
+  if (status_t ret = areInputImagesValid(
+          uncompressed_p010_image, /* uncompressed_yuv_420_image */ nullptr) != NO_ERROR) {
+    return ret;
+  }
+
+  ultrahdr_metadata_struct metadata;
+  metadata.version = kJpegrVersion;
+
+  jpegr_uncompressed_struct uncompressed_yuv_420_image;
+  unique_ptr<uint8_t[]> uncompressed_yuv_420_image_data = make_unique<uint8_t[]>(
+      uncompressed_p010_image->width * uncompressed_p010_image->height * 3 / 2);
+  uncompressed_yuv_420_image.data = uncompressed_yuv_420_image_data.get();
+  JPEGR_CHECK(toneMap(uncompressed_p010_image, &uncompressed_yuv_420_image));
+
+  jpegr_uncompressed_struct map;
+  JPEGR_CHECK(generateGainMap(
+      &uncompressed_yuv_420_image, uncompressed_p010_image, hdr_tf, &metadata, &map));
+  std::unique_ptr<uint8_t[]> map_data;
+  map_data.reset(reinterpret_cast<uint8_t*>(map.data));
+
+  jpegr_compressed_struct compressed_map;
+  compressed_map.maxLength = map.width * map.height;
+  unique_ptr<uint8_t[]> compressed_map_data = make_unique<uint8_t[]>(compressed_map.maxLength);
+  compressed_map.data = compressed_map_data.get();
+  JPEGR_CHECK(compressGainMap(&map, &compressed_map));
+
+  sp<DataStruct> icc = IccHelper::writeIccProfile(ULTRAHDR_TF_SRGB,
+                                                  uncompressed_yuv_420_image.colorGamut);
+
+  JpegEncoderHelper jpeg_encoder;
+  if (!jpeg_encoder.compressImage(uncompressed_yuv_420_image.data,
+                                  uncompressed_yuv_420_image.width,
+                                  uncompressed_yuv_420_image.height, quality,
+                                  icc->getData(), icc->getLength())) {
+    return ERROR_JPEGR_ENCODE_ERROR;
+  }
+  jpegr_compressed_struct jpeg;
+  jpeg.data = jpeg_encoder.getCompressedImagePtr();
+  jpeg.length = jpeg_encoder.getCompressedImageSize();
+
+  JPEGR_CHECK(appendGainMap(&jpeg, &compressed_map, exif, &metadata, dest));
+
+  return NO_ERROR;
+}
+
+/* Encode API-1 */
+status_t JpegR::encodeJPEGR(jr_uncompressed_ptr uncompressed_p010_image,
+                            jr_uncompressed_ptr uncompressed_yuv_420_image,
+                            ultrahdr_transfer_function hdr_tf,
+                            jr_compressed_ptr dest,
+                            int quality,
+                            jr_exif_ptr exif) {
+  if (uncompressed_p010_image == nullptr
+   || uncompressed_yuv_420_image == nullptr
+   || dest == nullptr) {
+    return ERROR_JPEGR_INVALID_NULL_PTR;
+  }
+
+  if (quality < 0 || quality > 100) {
+    return ERROR_JPEGR_INVALID_INPUT_TYPE;
+  }
+
+  if (status_t ret = areInputImagesValid(
+          uncompressed_p010_image, uncompressed_yuv_420_image) != NO_ERROR) {
+    return ret;
+  }
+
+  ultrahdr_metadata_struct metadata;
+  metadata.version = kJpegrVersion;
+
+  jpegr_uncompressed_struct map;
+  JPEGR_CHECK(generateGainMap(
+      uncompressed_yuv_420_image, uncompressed_p010_image, hdr_tf, &metadata, &map));
+  std::unique_ptr<uint8_t[]> map_data;
+  map_data.reset(reinterpret_cast<uint8_t*>(map.data));
+
+  jpegr_compressed_struct compressed_map;
+  compressed_map.maxLength = map.width * map.height;
+  unique_ptr<uint8_t[]> compressed_map_data = make_unique<uint8_t[]>(compressed_map.maxLength);
+  compressed_map.data = compressed_map_data.get();
+  JPEGR_CHECK(compressGainMap(&map, &compressed_map));
+
+  sp<DataStruct> icc = IccHelper::writeIccProfile(ULTRAHDR_TF_SRGB,
+                                                  uncompressed_yuv_420_image->colorGamut);
+
+  JpegEncoderHelper jpeg_encoder;
+  if (!jpeg_encoder.compressImage(uncompressed_yuv_420_image->data,
+                                  uncompressed_yuv_420_image->width,
+                                  uncompressed_yuv_420_image->height, quality,
+                                  icc->getData(), icc->getLength())) {
+    return ERROR_JPEGR_ENCODE_ERROR;
+  }
+  jpegr_compressed_struct jpeg;
+  jpeg.data = jpeg_encoder.getCompressedImagePtr();
+  jpeg.length = jpeg_encoder.getCompressedImageSize();
+
+  JPEGR_CHECK(appendGainMap(&jpeg, &compressed_map, exif, &metadata, dest));
+
+  return NO_ERROR;
+}
+
+/* Encode API-2 */
+status_t JpegR::encodeJPEGR(jr_uncompressed_ptr uncompressed_p010_image,
+                            jr_uncompressed_ptr uncompressed_yuv_420_image,
+                            jr_compressed_ptr compressed_jpeg_image,
+                            ultrahdr_transfer_function hdr_tf,
+                            jr_compressed_ptr dest) {
+  if (uncompressed_p010_image == nullptr
+   || uncompressed_yuv_420_image == nullptr
+   || compressed_jpeg_image == nullptr
+   || dest == nullptr) {
+    return ERROR_JPEGR_INVALID_NULL_PTR;
+  }
+
+  if (status_t ret = areInputImagesValid(
+          uncompressed_p010_image, uncompressed_yuv_420_image) != NO_ERROR) {
+    return ret;
+  }
+
+  ultrahdr_metadata_struct metadata;
+  metadata.version = kJpegrVersion;
+
+  jpegr_uncompressed_struct map;
+  JPEGR_CHECK(generateGainMap(
+      uncompressed_yuv_420_image, uncompressed_p010_image, hdr_tf, &metadata, &map));
+  std::unique_ptr<uint8_t[]> map_data;
+  map_data.reset(reinterpret_cast<uint8_t*>(map.data));
+
+  jpegr_compressed_struct compressed_map;
+  compressed_map.maxLength = map.width * map.height;
+  unique_ptr<uint8_t[]> compressed_map_data = make_unique<uint8_t[]>(compressed_map.maxLength);
+  compressed_map.data = compressed_map_data.get();
+  JPEGR_CHECK(compressGainMap(&map, &compressed_map));
+
+  JPEGR_CHECK(appendGainMap(compressed_jpeg_image, &compressed_map, nullptr, &metadata, dest));
+
+  return NO_ERROR;
+}
+
+/* Encode API-3 */
+status_t JpegR::encodeJPEGR(jr_uncompressed_ptr uncompressed_p010_image,
+                            jr_compressed_ptr compressed_jpeg_image,
+                            ultrahdr_transfer_function hdr_tf,
+                            jr_compressed_ptr dest) {
+  if (uncompressed_p010_image == nullptr
+   || compressed_jpeg_image == nullptr
+   || dest == nullptr) {
+    return ERROR_JPEGR_INVALID_NULL_PTR;
+  }
+
+  if (status_t ret = areInputImagesValid(
+          uncompressed_p010_image, /* uncompressed_yuv_420_image */ nullptr) != NO_ERROR) {
+    return ret;
+  }
+
+  JpegDecoderHelper jpeg_decoder;
+  if (!jpeg_decoder.decompressImage(compressed_jpeg_image->data, compressed_jpeg_image->length)) {
+    return ERROR_JPEGR_DECODE_ERROR;
+  }
+  jpegr_uncompressed_struct uncompressed_yuv_420_image;
+  uncompressed_yuv_420_image.data = jpeg_decoder.getDecompressedImagePtr();
+  uncompressed_yuv_420_image.width = jpeg_decoder.getDecompressedImageWidth();
+  uncompressed_yuv_420_image.height = jpeg_decoder.getDecompressedImageHeight();
+  uncompressed_yuv_420_image.colorGamut = compressed_jpeg_image->colorGamut;
+
+  if (uncompressed_p010_image->width != uncompressed_yuv_420_image.width
+   || uncompressed_p010_image->height != uncompressed_yuv_420_image.height) {
+    return ERROR_JPEGR_RESOLUTION_MISMATCH;
+  }
+
+  ultrahdr_metadata_struct metadata;
+  metadata.version = kJpegrVersion;
+
+  jpegr_uncompressed_struct map;
+  JPEGR_CHECK(generateGainMap(
+      &uncompressed_yuv_420_image, uncompressed_p010_image, hdr_tf, &metadata, &map));
+  std::unique_ptr<uint8_t[]> map_data;
+  map_data.reset(reinterpret_cast<uint8_t*>(map.data));
+
+  jpegr_compressed_struct compressed_map;
+  compressed_map.maxLength = map.width * map.height;
+  unique_ptr<uint8_t[]> compressed_map_data = make_unique<uint8_t[]>(compressed_map.maxLength);
+  compressed_map.data = compressed_map_data.get();
+  JPEGR_CHECK(compressGainMap(&map, &compressed_map));
+
+  JPEGR_CHECK(appendGainMap(compressed_jpeg_image, &compressed_map, nullptr, &metadata, dest));
+
+  return NO_ERROR;
+}
+
+status_t JpegR::getJPEGRInfo(jr_compressed_ptr compressed_jpegr_image, jr_info_ptr jpegr_info) {
+  if (compressed_jpegr_image == nullptr || jpegr_info == nullptr) {
+    return ERROR_JPEGR_INVALID_NULL_PTR;
+  }
+
+  jpegr_compressed_struct primary_image, gain_map;
+  JPEGR_CHECK(extractPrimaryImageAndGainMap(compressed_jpegr_image,
+                                            &primary_image, &gain_map));
+
+  JpegDecoderHelper jpeg_decoder;
+  if (!jpeg_decoder.getCompressedImageParameters(primary_image.data, primary_image.length,
+                                                 &jpegr_info->width, &jpegr_info->height,
+                                                 jpegr_info->iccData, jpegr_info->exifData)) {
+    return ERROR_JPEGR_DECODE_ERROR;
+  }
+
+  return NO_ERROR;
+}
+
+/* Decode API */
+status_t JpegR::decodeJPEGR(jr_compressed_ptr compressed_jpegr_image,
+                            jr_uncompressed_ptr dest,
+                            float max_display_boost,
+                            jr_exif_ptr exif,
+                            ultrahdr_output_format output_format,
+                            jr_uncompressed_ptr gain_map,
+                            ultrahdr_metadata_ptr metadata) {
+  if (compressed_jpegr_image == nullptr || dest == nullptr) {
+    return ERROR_JPEGR_INVALID_NULL_PTR;
+  }
+
+  if (max_display_boost < 1.0f) {
+      return ERROR_JPEGR_INVALID_INPUT_TYPE;
+  }
+
+  if (output_format == ULTRAHDR_OUTPUT_SDR) {
+    JpegDecoderHelper jpeg_decoder;
+    if (!jpeg_decoder.decompressImage(compressed_jpegr_image->data, compressed_jpegr_image->length,
+                                      true)) {
+        return ERROR_JPEGR_DECODE_ERROR;
+    }
+    jpegr_uncompressed_struct uncompressed_rgba_image;
+    uncompressed_rgba_image.data = jpeg_decoder.getDecompressedImagePtr();
+    uncompressed_rgba_image.width = jpeg_decoder.getDecompressedImageWidth();
+    uncompressed_rgba_image.height = jpeg_decoder.getDecompressedImageHeight();
+    memcpy(dest->data, uncompressed_rgba_image.data,
+           uncompressed_rgba_image.width * uncompressed_rgba_image.height * 4);
+    dest->width = uncompressed_rgba_image.width;
+    dest->height = uncompressed_rgba_image.height;
+
+    if (gain_map == nullptr && exif == nullptr) {
+      return NO_ERROR;
+    }
+
+    if (exif != nullptr) {
+      if (exif->data == nullptr) {
+        return ERROR_JPEGR_INVALID_NULL_PTR;
+      }
+      if (exif->length < jpeg_decoder.getEXIFSize()) {
+        return ERROR_JPEGR_BUFFER_TOO_SMALL;
+      }
+      memcpy(exif->data, jpeg_decoder.getEXIFPtr(), jpeg_decoder.getEXIFSize());
+      exif->length = jpeg_decoder.getEXIFSize();
+    }
+    if (gain_map == nullptr) {
+      return NO_ERROR;
+    }
+  }
+
+  jpegr_compressed_struct compressed_map;
+  JPEGR_CHECK(extractGainMap(compressed_jpegr_image, &compressed_map));
+
+  JpegDecoderHelper gain_map_decoder;
+  if (!gain_map_decoder.decompressImage(compressed_map.data, compressed_map.length)) {
+    return ERROR_JPEGR_DECODE_ERROR;
+  }
+
+  if (gain_map != nullptr) {
+    gain_map->width = gain_map_decoder.getDecompressedImageWidth();
+    gain_map->height = gain_map_decoder.getDecompressedImageHeight();
+    int size = gain_map->width * gain_map->height;
+    gain_map->data = malloc(size);
+    memcpy(gain_map->data, gain_map_decoder.getDecompressedImagePtr(), size);
+  }
+
+  ultrahdr_metadata_struct uhdr_metadata;
+  if (!getMetadataFromXMP(static_cast<uint8_t*>(gain_map_decoder.getXMPPtr()),
+                          gain_map_decoder.getXMPSize(), &uhdr_metadata)) {
+    return ERROR_JPEGR_DECODE_ERROR;
+  }
+
+  if (metadata != nullptr) {
+      metadata->version = uhdr_metadata.version;
+      metadata->minContentBoost = uhdr_metadata.minContentBoost;
+      metadata->maxContentBoost = uhdr_metadata.maxContentBoost;
+  }
+
+  if (output_format == ULTRAHDR_OUTPUT_SDR) {
+    return NO_ERROR;
+  }
+
+  JpegDecoderHelper jpeg_decoder;
+  if (!jpeg_decoder.decompressImage(compressed_jpegr_image->data, compressed_jpegr_image->length)) {
+    return ERROR_JPEGR_DECODE_ERROR;
+  }
+
+  if (exif != nullptr) {
+    if (exif->data == nullptr) {
+      return ERROR_JPEGR_INVALID_NULL_PTR;
+    }
+    if (exif->length < jpeg_decoder.getEXIFSize()) {
+      return ERROR_JPEGR_BUFFER_TOO_SMALL;
+    }
+    memcpy(exif->data, jpeg_decoder.getEXIFPtr(), jpeg_decoder.getEXIFSize());
+    exif->length = jpeg_decoder.getEXIFSize();
+  }
+
+  jpegr_uncompressed_struct map;
+  map.data = gain_map_decoder.getDecompressedImagePtr();
+  map.width = gain_map_decoder.getDecompressedImageWidth();
+  map.height = gain_map_decoder.getDecompressedImageHeight();
+
+  jpegr_uncompressed_struct uncompressed_yuv_420_image;
+  uncompressed_yuv_420_image.data = jpeg_decoder.getDecompressedImagePtr();
+  uncompressed_yuv_420_image.width = jpeg_decoder.getDecompressedImageWidth();
+  uncompressed_yuv_420_image.height = jpeg_decoder.getDecompressedImageHeight();
+
+  JPEGR_CHECK(applyGainMap(&uncompressed_yuv_420_image, &map, &uhdr_metadata, output_format,
+                           max_display_boost, dest));
+  return NO_ERROR;
+}
+
+status_t JpegR::compressGainMap(jr_uncompressed_ptr uncompressed_gain_map,
+                                jr_compressed_ptr dest) {
+  if (uncompressed_gain_map == nullptr || dest == nullptr) {
+    return ERROR_JPEGR_INVALID_NULL_PTR;
+  }
+
+  JpegEncoderHelper jpeg_encoder;
+  if (!jpeg_encoder.compressImage(uncompressed_gain_map->data,
+                                  uncompressed_gain_map->width,
+                                  uncompressed_gain_map->height,
+                                  kMapCompressQuality,
+                                  nullptr,
+                                  0,
+                                  true /* isSingleChannel */)) {
+    return ERROR_JPEGR_ENCODE_ERROR;
+  }
+
+  if (dest->maxLength < jpeg_encoder.getCompressedImageSize()) {
+    return ERROR_JPEGR_BUFFER_TOO_SMALL;
+  }
+
+  memcpy(dest->data, jpeg_encoder.getCompressedImagePtr(), jpeg_encoder.getCompressedImageSize());
+  dest->length = jpeg_encoder.getCompressedImageSize();
+  dest->colorGamut = ULTRAHDR_COLORGAMUT_UNSPECIFIED;
+
+  return NO_ERROR;
+}
+
+const int kJobSzInRows = 16;
+static_assert(kJobSzInRows > 0 && kJobSzInRows % kMapDimensionScaleFactor == 0,
+              "align job size to kMapDimensionScaleFactor");
+
+class JobQueue {
+ public:
+  bool dequeueJob(size_t& rowStart, size_t& rowEnd);
+  void enqueueJob(size_t rowStart, size_t rowEnd);
+  void markQueueForEnd();
+  void reset();
+
+ private:
+  bool mQueuedAllJobs = false;
+  std::deque<std::tuple<size_t, size_t>> mJobs;
+  std::mutex mMutex;
+  std::condition_variable mCv;
+};
+
+bool JobQueue::dequeueJob(size_t& rowStart, size_t& rowEnd) {
+  std::unique_lock<std::mutex> lock{mMutex};
+  while (true) {
+    if (mJobs.empty()) {
+      if (mQueuedAllJobs) {
+        return false;
+      } else {
+        mCv.wait(lock);
+      }
+    } else {
+      auto it = mJobs.begin();
+      rowStart = std::get<0>(*it);
+      rowEnd = std::get<1>(*it);
+      mJobs.erase(it);
+      return true;
+    }
+  }
+  return false;
+}
+
+void JobQueue::enqueueJob(size_t rowStart, size_t rowEnd) {
+  std::unique_lock<std::mutex> lock{mMutex};
+  mJobs.push_back(std::make_tuple(rowStart, rowEnd));
+  lock.unlock();
+  mCv.notify_one();
+}
+
+void JobQueue::markQueueForEnd() {
+  std::unique_lock<std::mutex> lock{mMutex};
+  mQueuedAllJobs = true;
+}
+
+void JobQueue::reset() {
+  std::unique_lock<std::mutex> lock{mMutex};
+  mJobs.clear();
+  mQueuedAllJobs = false;
+}
+
+status_t JpegR::generateGainMap(jr_uncompressed_ptr uncompressed_yuv_420_image,
+                                jr_uncompressed_ptr uncompressed_p010_image,
+                                ultrahdr_transfer_function hdr_tf,
+                                ultrahdr_metadata_ptr metadata,
+                                jr_uncompressed_ptr dest) {
+  if (uncompressed_yuv_420_image == nullptr
+   || uncompressed_p010_image == nullptr
+   || metadata == nullptr
+   || dest == nullptr) {
+    return ERROR_JPEGR_INVALID_NULL_PTR;
+  }
+
+  if (uncompressed_yuv_420_image->width != uncompressed_p010_image->width
+   || uncompressed_yuv_420_image->height != uncompressed_p010_image->height) {
+    return ERROR_JPEGR_RESOLUTION_MISMATCH;
+  }
+
+  if (uncompressed_yuv_420_image->colorGamut == ULTRAHDR_COLORGAMUT_UNSPECIFIED
+   || uncompressed_p010_image->colorGamut == ULTRAHDR_COLORGAMUT_UNSPECIFIED) {
+    return ERROR_JPEGR_INVALID_COLORGAMUT;
+  }
+
+  size_t image_width = uncompressed_yuv_420_image->width;
+  size_t image_height = uncompressed_yuv_420_image->height;
+  size_t map_width = image_width / kMapDimensionScaleFactor;
+  size_t map_height = image_height / kMapDimensionScaleFactor;
+  size_t map_stride = static_cast<size_t>(
+          floor((map_width + kJpegBlock - 1) / kJpegBlock)) * kJpegBlock;
+  size_t map_height_aligned = ((map_height + 1) >> 1) << 1;
+
+  dest->width = map_stride;
+  dest->height = map_height_aligned;
+  dest->colorGamut = ULTRAHDR_COLORGAMUT_UNSPECIFIED;
+  dest->data = new uint8_t[map_stride * map_height_aligned];
+  std::unique_ptr<uint8_t[]> map_data;
+  map_data.reset(reinterpret_cast<uint8_t*>(dest->data));
+
+  ColorTransformFn hdrInvOetf = nullptr;
+  float hdr_white_nits = 0.0f;
+  switch (hdr_tf) {
+    case ULTRAHDR_TF_LINEAR:
+      hdrInvOetf = identityConversion;
+      break;
+    case ULTRAHDR_TF_HLG:
+#if USE_HLG_INVOETF_LUT
+      hdrInvOetf = hlgInvOetfLUT;
+#else
+      hdrInvOetf = hlgInvOetf;
+#endif
+      hdr_white_nits = kHlgMaxNits;
+      break;
+    case ULTRAHDR_TF_PQ:
+#if USE_PQ_INVOETF_LUT
+      hdrInvOetf = pqInvOetfLUT;
+#else
+      hdrInvOetf = pqInvOetf;
+#endif
+      hdr_white_nits = kPqMaxNits;
+      break;
+    default:
+      // Should be impossible to hit after input validation.
+      return ERROR_JPEGR_INVALID_TRANS_FUNC;
+  }
+
+  metadata->maxContentBoost = hdr_white_nits / kSdrWhiteNits;
+  metadata->minContentBoost = 1.0f;
+  float log2MinBoost = log2(metadata->minContentBoost);
+  float log2MaxBoost = log2(metadata->maxContentBoost);
+
+  ColorTransformFn hdrGamutConversionFn = getHdrConversionFn(
+      uncompressed_yuv_420_image->colorGamut, uncompressed_p010_image->colorGamut);
+
+  ColorCalculationFn luminanceFn = nullptr;
+  switch (uncompressed_yuv_420_image->colorGamut) {
+    case ULTRAHDR_COLORGAMUT_BT709:
+      luminanceFn = srgbLuminance;
+      break;
+    case ULTRAHDR_COLORGAMUT_P3:
+      luminanceFn = p3Luminance;
+      break;
+    case ULTRAHDR_COLORGAMUT_BT2100:
+      luminanceFn = bt2100Luminance;
+      break;
+    case ULTRAHDR_COLORGAMUT_UNSPECIFIED:
+      // Should be impossible to hit after input validation.
+      return ERROR_JPEGR_INVALID_COLORGAMUT;
+  }
+
+  std::mutex mutex;
+  const int threads = std::clamp(GetCPUCoreCount(), 1, 4);
+  size_t rowStep = threads == 1 ? image_height : kJobSzInRows;
+  JobQueue jobQueue;
+
+  std::function<void()> generateMap = [uncompressed_yuv_420_image, uncompressed_p010_image,
+                                       metadata, dest, hdrInvOetf, hdrGamutConversionFn,
+                                       luminanceFn, hdr_white_nits, log2MinBoost, log2MaxBoost,
+                                       &jobQueue]() -> void {
+    size_t rowStart, rowEnd;
+    size_t dest_map_width = uncompressed_yuv_420_image->width / kMapDimensionScaleFactor;
+    size_t dest_map_stride = dest->width;
+    while (jobQueue.dequeueJob(rowStart, rowEnd)) {
+      for (size_t y = rowStart; y < rowEnd; ++y) {
+        for (size_t x = 0; x < dest_map_width; ++x) {
+          Color sdr_yuv_gamma =
+              sampleYuv420(uncompressed_yuv_420_image, kMapDimensionScaleFactor, x, y);
+          Color sdr_rgb_gamma = srgbYuvToRgb(sdr_yuv_gamma);
+#if USE_SRGB_INVOETF_LUT
+          Color sdr_rgb = srgbInvOetfLUT(sdr_rgb_gamma);
+#else
+          Color sdr_rgb = srgbInvOetf(sdr_rgb_gamma);
+#endif
+          float sdr_y_nits = luminanceFn(sdr_rgb) * kSdrWhiteNits;
+
+          Color hdr_yuv_gamma = sampleP010(uncompressed_p010_image, kMapDimensionScaleFactor, x, y);
+          Color hdr_rgb_gamma = bt2100YuvToRgb(hdr_yuv_gamma);
+          Color hdr_rgb = hdrInvOetf(hdr_rgb_gamma);
+          hdr_rgb = hdrGamutConversionFn(hdr_rgb);
+          float hdr_y_nits = luminanceFn(hdr_rgb) * hdr_white_nits;
+
+          size_t pixel_idx = x + y * dest_map_stride;
+          reinterpret_cast<uint8_t*>(dest->data)[pixel_idx] =
+              encodeGain(sdr_y_nits, hdr_y_nits, metadata, log2MinBoost, log2MaxBoost);
+        }
+      }
+    }
+  };
+
+  // generate map
+  std::vector<std::thread> workers;
+  for (int th = 0; th < threads - 1; th++) {
+    workers.push_back(std::thread(generateMap));
+  }
+
+  rowStep = (threads == 1 ? image_height : kJobSzInRows) / kMapDimensionScaleFactor;
+  for (size_t rowStart = 0; rowStart < map_height;) {
+    size_t rowEnd = std::min(rowStart + rowStep, map_height);
+    jobQueue.enqueueJob(rowStart, rowEnd);
+    rowStart = rowEnd;
+  }
+  jobQueue.markQueueForEnd();
+  generateMap();
+  std::for_each(workers.begin(), workers.end(), [](std::thread& t) { t.join(); });
+
+  map_data.release();
+  return NO_ERROR;
+}
+
+status_t JpegR::applyGainMap(jr_uncompressed_ptr uncompressed_yuv_420_image,
+                             jr_uncompressed_ptr uncompressed_gain_map,
+                             ultrahdr_metadata_ptr metadata,
+                             ultrahdr_output_format output_format,
+                             float max_display_boost,
+                             jr_uncompressed_ptr dest) {
+  if (uncompressed_yuv_420_image == nullptr
+   || uncompressed_gain_map == nullptr
+   || metadata == nullptr
+   || dest == nullptr) {
+    return ERROR_JPEGR_INVALID_NULL_PTR;
+  }
+
+  dest->width = uncompressed_yuv_420_image->width;
+  dest->height = uncompressed_yuv_420_image->height;
+  ShepardsIDW idwTable(kMapDimensionScaleFactor);
+  float display_boost = std::min(max_display_boost, metadata->maxContentBoost);
+  GainLUT gainLUT(metadata, display_boost);
+
+  JobQueue jobQueue;
+  std::function<void()> applyRecMap = [uncompressed_yuv_420_image, uncompressed_gain_map,
+                                       metadata, dest, &jobQueue, &idwTable, output_format,
+                                       &gainLUT, display_boost]() -> void {
+    size_t width = uncompressed_yuv_420_image->width;
+    size_t height = uncompressed_yuv_420_image->height;
+
+    size_t rowStart, rowEnd;
+    while (jobQueue.dequeueJob(rowStart, rowEnd)) {
+      for (size_t y = rowStart; y < rowEnd; ++y) {
+        for (size_t x = 0; x < width; ++x) {
+          Color yuv_gamma_sdr = getYuv420Pixel(uncompressed_yuv_420_image, x, y);
+          Color rgb_gamma_sdr = srgbYuvToRgb(yuv_gamma_sdr);
+#if USE_SRGB_INVOETF_LUT
+          Color rgb_sdr = srgbInvOetfLUT(rgb_gamma_sdr);
+#else
+          Color rgb_sdr = srgbInvOetf(rgb_gamma_sdr);
+#endif
+          float gain;
+          // TODO: determine map scaling factor based on actual map dims
+          size_t map_scale_factor = kMapDimensionScaleFactor;
+          // TODO: If map_scale_factor is guaranteed to be an integer, then remove the following.
+          // Currently map_scale_factor is of type size_t, but it could be changed to a float
+          // later.
+          if (map_scale_factor != floorf(map_scale_factor)) {
+            gain = sampleMap(uncompressed_gain_map, map_scale_factor, x, y);
+          } else {
+            gain = sampleMap(uncompressed_gain_map, map_scale_factor, x, y, idwTable);
+          }
+
+#if USE_APPLY_GAIN_LUT
+          Color rgb_hdr = applyGainLUT(rgb_sdr, gain, gainLUT);
+#else
+          Color rgb_hdr = applyGain(rgb_sdr, gain, metadata, display_boost);
+#endif
+          rgb_hdr = rgb_hdr / display_boost;
+          size_t pixel_idx = x + y * width;
+
+          switch (output_format) {
+            case ULTRAHDR_OUTPUT_HDR_LINEAR:
+            {
+              uint64_t rgba_f16 = colorToRgbaF16(rgb_hdr);
+              reinterpret_cast<uint64_t*>(dest->data)[pixel_idx] = rgba_f16;
+              break;
+            }
+            case ULTRAHDR_OUTPUT_HDR_HLG:
+            {
+#if USE_HLG_OETF_LUT
+              ColorTransformFn hdrOetf = hlgOetfLUT;
+#else
+              ColorTransformFn hdrOetf = hlgOetf;
+#endif
+              Color rgb_gamma_hdr = hdrOetf(rgb_hdr);
+              uint32_t rgba_1010102 = colorToRgba1010102(rgb_gamma_hdr);
+              reinterpret_cast<uint32_t*>(dest->data)[pixel_idx] = rgba_1010102;
+              break;
+            }
+            case ULTRAHDR_OUTPUT_HDR_PQ:
+            {
+#if USE_HLG_OETF_LUT
+              ColorTransformFn hdrOetf = pqOetfLUT;
+#else
+              ColorTransformFn hdrOetf = pqOetf;
+#endif
+              Color rgb_gamma_hdr = hdrOetf(rgb_hdr);
+              uint32_t rgba_1010102 = colorToRgba1010102(rgb_gamma_hdr);
+              reinterpret_cast<uint32_t*>(dest->data)[pixel_idx] = rgba_1010102;
+              break;
+            }
+            default:
+            {}
+              // Should be impossible to hit after input validation.
+          }
+        }
+      }
+    }
+  };
+
+  const int threads = std::clamp(GetCPUCoreCount(), 1, 4);
+  std::vector<std::thread> workers;
+  for (int th = 0; th < threads - 1; th++) {
+    workers.push_back(std::thread(applyRecMap));
+  }
+  const int rowStep = threads == 1 ? uncompressed_yuv_420_image->height : kJobSzInRows;
+  for (int rowStart = 0; rowStart < uncompressed_yuv_420_image->height;) {
+    int rowEnd = std::min(rowStart + rowStep, uncompressed_yuv_420_image->height);
+    jobQueue.enqueueJob(rowStart, rowEnd);
+    rowStart = rowEnd;
+  }
+  jobQueue.markQueueForEnd();
+  applyRecMap();
+  std::for_each(workers.begin(), workers.end(), [](std::thread& t) { t.join(); });
+  return NO_ERROR;
+}
+
+status_t JpegR::extractPrimaryImageAndGainMap(jr_compressed_ptr compressed_jpegr_image,
+                                              jr_compressed_ptr primary_image,
+                                              jr_compressed_ptr gain_map) {
+  if (compressed_jpegr_image == nullptr) {
+    return ERROR_JPEGR_INVALID_NULL_PTR;
+  }
+
+  MessageHandler msg_handler;
+  std::shared_ptr<DataSegment> seg =
+                  DataSegment::Create(DataRange(0, compressed_jpegr_image->length),
+                                      static_cast<const uint8_t*>(compressed_jpegr_image->data),
+                                      DataSegment::BufferDispositionPolicy::kDontDelete);
+  DataSegmentDataSource data_source(seg);
+  JpegInfoBuilder jpeg_info_builder;
+  jpeg_info_builder.SetImageLimit(2);
+  JpegScanner jpeg_scanner(&msg_handler);
+  jpeg_scanner.Run(&data_source, &jpeg_info_builder);
+  data_source.Reset();
+
+  if (jpeg_scanner.HasError()) {
+    return ERROR_JPEGR_INVALID_INPUT_TYPE;
+  }
+
+  const auto& jpeg_info = jpeg_info_builder.GetInfo();
+  const auto& image_ranges = jpeg_info.GetImageRanges();
+  if (image_ranges.empty()) {
+    return ERROR_JPEGR_INVALID_INPUT_TYPE;
+  }
+
+  if (image_ranges.size() != 2) {
+    // Must be 2 JPEG Images
+    return ERROR_JPEGR_INVALID_INPUT_TYPE;
+  }
+
+  if (primary_image != nullptr) {
+    primary_image->data = static_cast<uint8_t*>(compressed_jpegr_image->data) +
+                                               image_ranges[0].GetBegin();
+    primary_image->length = image_ranges[0].GetLength();
+  }
+
+  if (gain_map != nullptr) {
+    gain_map->data = static_cast<uint8_t*>(compressed_jpegr_image->data) +
+                                              image_ranges[1].GetBegin();
+    gain_map->length = image_ranges[1].GetLength();
+  }
+
+  return NO_ERROR;
+}
+
+
+status_t JpegR::extractGainMap(jr_compressed_ptr compressed_jpegr_image,
+                               jr_compressed_ptr dest) {
+  if (compressed_jpegr_image == nullptr || dest == nullptr) {
+    return ERROR_JPEGR_INVALID_NULL_PTR;
+  }
+
+  return extractPrimaryImageAndGainMap(compressed_jpegr_image, nullptr, dest);
+}
+
+// JPEG/R structure:
+// SOI (ff d8)
+//
+// (Optional, only if EXIF package is from outside)
+// APP1 (ff e1)
+// 2 bytes of length (2 + length of exif package)
+// EXIF package (this includes the first two bytes representing the package length)
+//
+// (Required, XMP package) APP1 (ff e1)
+// 2 bytes of length (2 + 29 + length of xmp package)
+// name space ("http://ns.adobe.com/xap/1.0/\0")
+// XMP
+//
+// (Required, MPF package) APP2 (ff e2)
+// 2 bytes of length
+// MPF
+//
+// (Required) primary image (without the first two bytes (SOI), may have other packages)
+//
+// SOI (ff d8)
+//
+// (Required, XMP package) APP1 (ff e1)
+// 2 bytes of length (2 + 29 + length of xmp package)
+// name space ("http://ns.adobe.com/xap/1.0/\0")
+// XMP
+//
+// (Required) secondary image (the gain map, without the first two bytes (SOI))
+//
+// Metadata versions we are using:
+// ECMA TR-98 for JFIF marker
+// Exif 2.2 spec for EXIF marker
+// Adobe XMP spec part 3 for XMP marker
+// ICC v4.3 spec for ICC
+status_t JpegR::appendGainMap(jr_compressed_ptr compressed_jpeg_image,
+                              jr_compressed_ptr compressed_gain_map,
+                              jr_exif_ptr exif,
+                              ultrahdr_metadata_ptr metadata,
+                              jr_compressed_ptr dest) {
+  if (compressed_jpeg_image == nullptr
+   || compressed_gain_map == nullptr
+   || metadata == nullptr
+   || dest == nullptr) {
+    return ERROR_JPEGR_INVALID_NULL_PTR;
+  }
+
+  const string nameSpace = "http://ns.adobe.com/xap/1.0/";
+  const int nameSpaceLength = nameSpace.size() + 1;  // need to count the null terminator
+
+  // calculate secondary image length first, because the length will be written into the primary
+  // image xmp
+  const string xmp_secondary = generateXmpForSecondaryImage(*metadata);
+  const int xmp_secondary_length = 2 /* 2 bytes representing the length of the package */
+                                 + nameSpaceLength /* 29 bytes length of name space including \0 */
+                                 + xmp_secondary.size(); /* length of xmp packet */
+  const int secondary_image_size = 2 /* 2 bytes length of APP1 sign */
+                                 + xmp_secondary_length
+                                 + compressed_gain_map->length;
+  // primary image
+  const string xmp_primary = generateXmpForPrimaryImage(secondary_image_size);
+  // same as primary
+  const int xmp_primary_length = 2 + nameSpaceLength + xmp_primary.size();
+
+  int pos = 0;
+  // Begin primary image
+  // Write SOI
+  JPEGR_CHECK(Write(dest, &photos_editing_formats::image_io::JpegMarker::kStart, 1, pos));
+  JPEGR_CHECK(Write(dest, &photos_editing_formats::image_io::JpegMarker::kSOI, 1, pos));
+
+  // Write EXIF
+  if (exif != nullptr) {
+    const int length = 2 + exif->length;
+    const uint8_t lengthH = ((length >> 8) & 0xff);
+    const uint8_t lengthL = (length & 0xff);
+    JPEGR_CHECK(Write(dest, &photos_editing_formats::image_io::JpegMarker::kStart, 1, pos));
+    JPEGR_CHECK(Write(dest, &photos_editing_formats::image_io::JpegMarker::kAPP1, 1, pos));
+    JPEGR_CHECK(Write(dest, &lengthH, 1, pos));
+    JPEGR_CHECK(Write(dest, &lengthL, 1, pos));
+    JPEGR_CHECK(Write(dest, exif->data, exif->length, pos));
+  }
+
+  // Prepare and write XMP
+  {
+    const int length = xmp_primary_length;
+    const uint8_t lengthH = ((length >> 8) & 0xff);
+    const uint8_t lengthL = (length & 0xff);
+    JPEGR_CHECK(Write(dest, &photos_editing_formats::image_io::JpegMarker::kStart, 1, pos));
+    JPEGR_CHECK(Write(dest, &photos_editing_formats::image_io::JpegMarker::kAPP1, 1, pos));
+    JPEGR_CHECK(Write(dest, &lengthH, 1, pos));
+    JPEGR_CHECK(Write(dest, &lengthL, 1, pos));
+    JPEGR_CHECK(Write(dest, (void*)nameSpace.c_str(), nameSpaceLength, pos));
+    JPEGR_CHECK(Write(dest, (void*)xmp_primary.c_str(), xmp_primary.size(), pos));
+  }
+
+  // Prepare and write MPF
+  {
+      const int length = 2 + calculateMpfSize();
+      const uint8_t lengthH = ((length >> 8) & 0xff);
+      const uint8_t lengthL = (length & 0xff);
+      int primary_image_size = pos + length + compressed_jpeg_image->length;
+      // between APP2 + package size + signature
+      // ff e2 00 58 4d 50 46 00
+      // 2 + 2 + 4 = 8 (bytes)
+      // and ff d8 sign of the secondary image
+      int secondary_image_offset = primary_image_size - pos - 8;
+      sp<DataStruct> mpf = generateMpf(primary_image_size,
+                                       0, /* primary_image_offset */
+                                       secondary_image_size,
+                                       secondary_image_offset);
+      JPEGR_CHECK(Write(dest, &photos_editing_formats::image_io::JpegMarker::kStart, 1, pos));
+      JPEGR_CHECK(Write(dest, &photos_editing_formats::image_io::JpegMarker::kAPP2, 1, pos));
+      JPEGR_CHECK(Write(dest, &lengthH, 1, pos));
+      JPEGR_CHECK(Write(dest, &lengthL, 1, pos));
+      JPEGR_CHECK(Write(dest, (void*)mpf->getData(), mpf->getLength(), pos));
+  }
+
+  // Write primary image
+  JPEGR_CHECK(Write(dest,
+      (uint8_t*)compressed_jpeg_image->data + 2, compressed_jpeg_image->length - 2, pos));
+  // Finish primary image
+
+  // Begin secondary image (gain map)
+  // Write SOI
+  JPEGR_CHECK(Write(dest, &photos_editing_formats::image_io::JpegMarker::kStart, 1, pos));
+  JPEGR_CHECK(Write(dest, &photos_editing_formats::image_io::JpegMarker::kSOI, 1, pos));
+
+  // Prepare and write XMP
+  {
+    const int length = xmp_secondary_length;
+    const uint8_t lengthH = ((length >> 8) & 0xff);
+    const uint8_t lengthL = (length & 0xff);
+    JPEGR_CHECK(Write(dest, &photos_editing_formats::image_io::JpegMarker::kStart, 1, pos));
+    JPEGR_CHECK(Write(dest, &photos_editing_formats::image_io::JpegMarker::kAPP1, 1, pos));
+    JPEGR_CHECK(Write(dest, &lengthH, 1, pos));
+    JPEGR_CHECK(Write(dest, &lengthL, 1, pos));
+    JPEGR_CHECK(Write(dest, (void*)nameSpace.c_str(), nameSpaceLength, pos));
+    JPEGR_CHECK(Write(dest, (void*)xmp_secondary.c_str(), xmp_secondary.size(), pos));
+  }
+
+  // Write secondary image
+  JPEGR_CHECK(Write(dest,
+        (uint8_t*)compressed_gain_map->data + 2, compressed_gain_map->length - 2, pos));
+
+  // Set back length
+  dest->length = pos;
+
+  // Done!
+  return NO_ERROR;
+}
+
+status_t JpegR::toneMap(jr_uncompressed_ptr src, jr_uncompressed_ptr dest) {
+  if (src == nullptr || dest == nullptr) {
+    return ERROR_JPEGR_INVALID_NULL_PTR;
+  }
+
+  size_t src_luma_stride = src->luma_stride;
+  size_t src_chroma_stride = src->chroma_stride;
+  uint16_t* src_luma_data = reinterpret_cast<uint16_t*>(src->data);
+  uint16_t* src_chroma_data = reinterpret_cast<uint16_t*>(src->chroma_data);
+
+  if (src_chroma_data == nullptr) {
+    src_chroma_data = &reinterpret_cast<uint16_t*>(src->data)[src_luma_stride * src->height];
+  }
+  if (src_luma_stride == 0) {
+    src_luma_stride = src->width;
+  }
+  if (src_chroma_stride == 0) {
+    src_chroma_stride = src_luma_stride;
+  }
+
+  dest->width = src->width;
+  dest->height = src->height;
+
+  size_t dest_luma_pixel_count = dest->width * dest->height;
+
+  for (size_t y = 0; y < src->height; ++y) {
+    for (size_t x = 0; x < src->width; ++x) {
+      size_t src_y_idx = y * src_luma_stride + x;
+      size_t src_u_idx = (y >> 1) * src_chroma_stride + (x & ~0x1);
+      size_t src_v_idx = src_u_idx + 1;
+
+      uint16_t y_uint = src_luma_data[src_y_idx] >> 6;
+      uint16_t u_uint = src_chroma_data[src_u_idx] >> 6;
+      uint16_t v_uint = src_chroma_data[src_v_idx] >> 6;
+
+      size_t dest_y_idx = x + y * dest->width;
+      size_t dest_uv_idx = x / 2 + (y / 2) * (dest->width / 2);
+
+      uint8_t* y = &reinterpret_cast<uint8_t*>(dest->data)[dest_y_idx];
+      uint8_t* u = &reinterpret_cast<uint8_t*>(dest->data)[dest_luma_pixel_count + dest_uv_idx];
+      uint8_t* v = &reinterpret_cast<uint8_t*>(
+              dest->data)[dest_luma_pixel_count * 5 / 4 + dest_uv_idx];
+
+      *y = static_cast<uint8_t>((y_uint >> 2) & 0xff);
+      *u = static_cast<uint8_t>((u_uint >> 2) & 0xff);
+      *v = static_cast<uint8_t>((v_uint >> 2) & 0xff);
+    }
+  }
+
+  dest->colorGamut = src->colorGamut;
+
+  return NO_ERROR;
+}
+
+} // namespace android::ultrahdr