JPEG/R refactor: rename jpegrecoverymap library to ultrahdr
Test: build
Bug: b/264715926
Change-Id: I227fb5960f8fc7e13aae354bf77ec033850faf10
diff --git a/libs/ultrahdr/jpegencoderhelper.cpp b/libs/ultrahdr/jpegencoderhelper.cpp
new file mode 100644
index 0000000..fc6e4d1
--- /dev/null
+++ b/libs/ultrahdr/jpegencoderhelper.cpp
@@ -0,0 +1,239 @@
+/*
+ * 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/jpegencoderhelper.h>
+
+#include <utils/Log.h>
+
+#include <errno.h>
+
+namespace android::ultrahdr {
+
+// The destination manager that can access |mResultBuffer| in JpegEncoderHelper.
+struct destination_mgr {
+public:
+ struct jpeg_destination_mgr mgr;
+ JpegEncoderHelper* encoder;
+};
+
+JpegEncoderHelper::JpegEncoderHelper() {
+}
+
+JpegEncoderHelper::~JpegEncoderHelper() {
+}
+
+bool JpegEncoderHelper::compressImage(const void* image, int width, int height, int quality,
+ const void* iccBuffer, unsigned int iccSize,
+ bool isSingleChannel) {
+ if (width % 8 != 0 || height % 2 != 0) {
+ ALOGE("Image size can not be handled: %dx%d", width, height);
+ return false;
+ }
+
+ mResultBuffer.clear();
+ if (!encode(image, width, height, quality, iccBuffer, iccSize, isSingleChannel)) {
+ return false;
+ }
+ ALOGI("Compressed JPEG: %d[%dx%d] -> %zu bytes",
+ (width * height * 12) / 8, width, height, mResultBuffer.size());
+ return true;
+}
+
+void* JpegEncoderHelper::getCompressedImagePtr() {
+ return mResultBuffer.data();
+}
+
+size_t JpegEncoderHelper::getCompressedImageSize() {
+ return mResultBuffer.size();
+}
+
+void JpegEncoderHelper::initDestination(j_compress_ptr cinfo) {
+ destination_mgr* dest = reinterpret_cast<destination_mgr*>(cinfo->dest);
+ std::vector<JOCTET>& buffer = dest->encoder->mResultBuffer;
+ buffer.resize(kBlockSize);
+ dest->mgr.next_output_byte = &buffer[0];
+ dest->mgr.free_in_buffer = buffer.size();
+}
+
+boolean JpegEncoderHelper::emptyOutputBuffer(j_compress_ptr cinfo) {
+ destination_mgr* dest = reinterpret_cast<destination_mgr*>(cinfo->dest);
+ std::vector<JOCTET>& buffer = dest->encoder->mResultBuffer;
+ size_t oldsize = buffer.size();
+ buffer.resize(oldsize + kBlockSize);
+ dest->mgr.next_output_byte = &buffer[oldsize];
+ dest->mgr.free_in_buffer = kBlockSize;
+ return true;
+}
+
+void JpegEncoderHelper::terminateDestination(j_compress_ptr cinfo) {
+ destination_mgr* dest = reinterpret_cast<destination_mgr*>(cinfo->dest);
+ std::vector<JOCTET>& buffer = dest->encoder->mResultBuffer;
+ buffer.resize(buffer.size() - dest->mgr.free_in_buffer);
+}
+
+void JpegEncoderHelper::outputErrorMessage(j_common_ptr cinfo) {
+ char buffer[JMSG_LENGTH_MAX];
+
+ /* Create the message */
+ (*cinfo->err->format_message) (cinfo, buffer);
+ ALOGE("%s\n", buffer);
+}
+
+bool JpegEncoderHelper::encode(const void* image, int width, int height, int jpegQuality,
+ const void* iccBuffer, unsigned int iccSize, bool isSingleChannel) {
+ jpeg_compress_struct cinfo;
+ jpeg_error_mgr jerr;
+
+ cinfo.err = jpeg_std_error(&jerr);
+ // Override output_message() to print error log with ALOGE().
+ cinfo.err->output_message = &outputErrorMessage;
+ jpeg_create_compress(&cinfo);
+ setJpegDestination(&cinfo);
+
+ setJpegCompressStruct(width, height, jpegQuality, &cinfo, isSingleChannel);
+ jpeg_start_compress(&cinfo, TRUE);
+
+ if (iccBuffer != nullptr && iccSize > 0) {
+ jpeg_write_marker(&cinfo, JPEG_APP0 + 2, static_cast<const JOCTET*>(iccBuffer), iccSize);
+ }
+
+ if (!compress(&cinfo, static_cast<const uint8_t*>(image), isSingleChannel)) {
+ return false;
+ }
+ jpeg_finish_compress(&cinfo);
+ jpeg_destroy_compress(&cinfo);
+ return true;
+}
+
+void JpegEncoderHelper::setJpegDestination(jpeg_compress_struct* cinfo) {
+ destination_mgr* dest = static_cast<struct destination_mgr *>((*cinfo->mem->alloc_small) (
+ (j_common_ptr) cinfo, JPOOL_PERMANENT, sizeof(destination_mgr)));
+ dest->encoder = this;
+ dest->mgr.init_destination = &initDestination;
+ dest->mgr.empty_output_buffer = &emptyOutputBuffer;
+ dest->mgr.term_destination = &terminateDestination;
+ cinfo->dest = reinterpret_cast<struct jpeg_destination_mgr*>(dest);
+}
+
+void JpegEncoderHelper::setJpegCompressStruct(int width, int height, int quality,
+ jpeg_compress_struct* cinfo, bool isSingleChannel) {
+ cinfo->image_width = width;
+ cinfo->image_height = height;
+ if (isSingleChannel) {
+ cinfo->input_components = 1;
+ cinfo->in_color_space = JCS_GRAYSCALE;
+ } else {
+ cinfo->input_components = 3;
+ cinfo->in_color_space = JCS_YCbCr;
+ }
+ jpeg_set_defaults(cinfo);
+
+ jpeg_set_quality(cinfo, quality, TRUE);
+ jpeg_set_colorspace(cinfo, isSingleChannel ? JCS_GRAYSCALE : JCS_YCbCr);
+ cinfo->raw_data_in = TRUE;
+ cinfo->dct_method = JDCT_IFAST;
+
+ if (!isSingleChannel) {
+ // Configure sampling factors. The sampling factor is JPEG subsampling 420 because the
+ // source format is YUV420.
+ cinfo->comp_info[0].h_samp_factor = 2;
+ cinfo->comp_info[0].v_samp_factor = 2;
+ cinfo->comp_info[1].h_samp_factor = 1;
+ cinfo->comp_info[1].v_samp_factor = 1;
+ cinfo->comp_info[2].h_samp_factor = 1;
+ cinfo->comp_info[2].v_samp_factor = 1;
+ }
+}
+
+bool JpegEncoderHelper::compress(
+ jpeg_compress_struct* cinfo, const uint8_t* image, bool isSingleChannel) {
+ if (isSingleChannel) {
+ return compressSingleChannel(cinfo, image);
+ }
+ return compressYuv(cinfo, image);
+}
+
+bool JpegEncoderHelper::compressYuv(jpeg_compress_struct* cinfo, const uint8_t* yuv) {
+ JSAMPROW y[kCompressBatchSize];
+ JSAMPROW cb[kCompressBatchSize / 2];
+ JSAMPROW cr[kCompressBatchSize / 2];
+ JSAMPARRAY planes[3] {y, cb, cr};
+
+ size_t y_plane_size = cinfo->image_width * cinfo->image_height;
+ size_t uv_plane_size = y_plane_size / 4;
+ uint8_t* y_plane = const_cast<uint8_t*>(yuv);
+ uint8_t* u_plane = const_cast<uint8_t*>(yuv + y_plane_size);
+ uint8_t* v_plane = const_cast<uint8_t*>(yuv + y_plane_size + uv_plane_size);
+ std::unique_ptr<uint8_t[]> empty(new uint8_t[cinfo->image_width]);
+ memset(empty.get(), 0, cinfo->image_width);
+
+ while (cinfo->next_scanline < cinfo->image_height) {
+ for (int i = 0; i < kCompressBatchSize; ++i) {
+ size_t scanline = cinfo->next_scanline + i;
+ if (scanline < cinfo->image_height) {
+ y[i] = y_plane + scanline * cinfo->image_width;
+ } else {
+ y[i] = empty.get();
+ }
+ }
+ // cb, cr only have half scanlines
+ for (int i = 0; i < kCompressBatchSize / 2; ++i) {
+ size_t scanline = cinfo->next_scanline / 2 + i;
+ if (scanline < cinfo->image_height / 2) {
+ int offset = scanline * (cinfo->image_width / 2);
+ cb[i] = u_plane + offset;
+ cr[i] = v_plane + offset;
+ } else {
+ cb[i] = cr[i] = empty.get();
+ }
+ }
+
+ int processed = jpeg_write_raw_data(cinfo, planes, kCompressBatchSize);
+ if (processed != kCompressBatchSize) {
+ ALOGE("Number of processed lines does not equal input lines.");
+ return false;
+ }
+ }
+ return true;
+}
+
+bool JpegEncoderHelper::compressSingleChannel(jpeg_compress_struct* cinfo, const uint8_t* image) {
+ JSAMPROW y[kCompressBatchSize];
+ JSAMPARRAY planes[1] {y};
+
+ uint8_t* y_plane = const_cast<uint8_t*>(image);
+ std::unique_ptr<uint8_t[]> empty(new uint8_t[cinfo->image_width]);
+ memset(empty.get(), 0, cinfo->image_width);
+
+ while (cinfo->next_scanline < cinfo->image_height) {
+ for (int i = 0; i < kCompressBatchSize; ++i) {
+ size_t scanline = cinfo->next_scanline + i;
+ if (scanline < cinfo->image_height) {
+ y[i] = y_plane + scanline * cinfo->image_width;
+ } else {
+ y[i] = empty.get();
+ }
+ }
+ int processed = jpeg_write_raw_data(cinfo, planes, kCompressBatchSize);
+ if (processed != kCompressBatchSize / 2) {
+ ALOGE("Number of processed lines does not equal input lines.");
+ return false;
+ }
+ }
+ return true;
+}
+
+} // namespace ultrahdr