libjpegrecoverymap: add JPEG decoder for YUV and single channel
Bug: b/252835416
Test: jpegdecoder_test
Change-Id: I418595d4e54ca0f6a25f442c95dd96a9a150b690
diff --git a/libs/jpegrecoverymap/tests/jpegdecoder_test.cpp b/libs/jpegrecoverymap/tests/jpegdecoder_test.cpp
new file mode 100644
index 0000000..8e01351
--- /dev/null
+++ b/libs/jpegrecoverymap/tests/jpegdecoder_test.cpp
@@ -0,0 +1,102 @@
+/*
+ * 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 <jpegrecoverymap/jpegdecoder.h>
+#include <gtest/gtest.h>
+#include <utils/Log.h>
+
+#include <fcntl.h>
+
+namespace android::recoverymap {
+
+#define YUV_IMAGE "/sdcard/Documents/minnie-320x240-yuv.jpg"
+#define YUV_IMAGE_SIZE 20193
+#define GREY_IMAGE "/sdcard/Documents/minnie-320x240-y.jpg"
+#define GREY_IMAGE_SIZE 20193
+
+class JpegDecoderTest : public testing::Test {
+public:
+ struct Image {
+ std::unique_ptr<uint8_t[]> buffer;
+ size_t size;
+ };
+ JpegDecoderTest();
+ ~JpegDecoderTest();
+protected:
+ virtual void SetUp();
+ virtual void TearDown();
+
+ Image mYuvImage, mGreyImage;
+};
+
+JpegDecoderTest::JpegDecoderTest() {}
+
+JpegDecoderTest::~JpegDecoderTest() {}
+
+static size_t getFileSize(int fd) {
+ struct stat st;
+ if (fstat(fd, &st) < 0) {
+ ALOGW("%s : fstat failed", __func__);
+ return 0;
+ }
+ return st.st_size; // bytes
+}
+
+static bool loadFile(const char filename[], JpegDecoderTest::Image* result) {
+ int fd = open(filename, O_CLOEXEC);
+ if (fd < 0) {
+ return false;
+ }
+ int length = getFileSize(fd);
+ if (length == 0) {
+ close(fd);
+ return false;
+ }
+ result->buffer.reset(new uint8_t[length]);
+ if (read(fd, result->buffer.get(), length) != static_cast<ssize_t>(length)) {
+ close(fd);
+ return false;
+ }
+ close(fd);
+ return true;
+}
+
+void JpegDecoderTest::SetUp() {
+ if (!loadFile(YUV_IMAGE, &mYuvImage)) {
+ FAIL() << "Load file " << YUV_IMAGE << " failed";
+ }
+ mYuvImage.size = YUV_IMAGE_SIZE;
+ if (!loadFile(GREY_IMAGE, &mGreyImage)) {
+ FAIL() << "Load file " << GREY_IMAGE << " failed";
+ }
+ mGreyImage.size = GREY_IMAGE_SIZE;
+}
+
+void JpegDecoderTest::TearDown() {}
+
+TEST_F(JpegDecoderTest, decodeYuvImage) {
+ JpegDecoder decoder;
+ EXPECT_TRUE(decoder.decompressImage(mYuvImage.buffer.get(), mYuvImage.size));
+ ASSERT_GT(decoder.getDecompressedImageSize(), static_cast<uint32_t>(0));
+}
+
+TEST_F(JpegDecoderTest, decodeGreyImage) {
+ JpegDecoder decoder;
+ EXPECT_TRUE(decoder.decompressImage(mGreyImage.buffer.get(), mGreyImage.size));
+ ASSERT_GT(decoder.getDecompressedImageSize(), static_cast<uint32_t>(0));
+}
+
+}
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