Add oss-fuzz implementation to tests/

tests/oss-fuzz/avif_decode_fuzzer.cc

@@ -0,0 +1,89 @@
+// Copyright 2020 Google Inc.
+//
+// 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 "avif/avif.h"
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  static avifRGBFormat rgbFormats[] = {AVIF_RGB_FORMAT_RGB,
+                                       AVIF_RGB_FORMAT_RGBA};
+  static size_t rgbFormatsCount = sizeof(rgbFormats) / sizeof(rgbFormats[0]);
+
+  static avifChromaUpsampling upsamplings[] = {AVIF_CHROMA_UPSAMPLING_BILINEAR,
+                                               AVIF_CHROMA_UPSAMPLING_NEAREST};
+  static size_t upsamplingsCount = sizeof(upsamplings) / sizeof(upsamplings[0]);
+
+  static uint32_t rgbDepths[] = {8, 10};
+  static size_t rgbDepthsCount = sizeof(rgbDepths) / sizeof(rgbDepths[0]);
+
+  static uint32_t yuvDepths[] = {8, 10};
+  static size_t yuvDepthsCount = sizeof(yuvDepths) / sizeof(yuvDepths[0]);
+
+  avifDecoder *decoder = avifDecoderCreate();
+  avifResult result = avifDecoderSetIOMemory(decoder, Data, Size);
+  if (result == AVIF_RESULT_OK) {
+    result = avifDecoderParse(decoder);
+  }
+  if (result == AVIF_RESULT_OK) {
+    for (int loop = 0; loop < 2; ++loop) {
+      while (avifDecoderNextImage(decoder) == AVIF_RESULT_OK) {
+        avifRGBImage rgb;
+        avifRGBImageSetDefaults(&rgb, decoder->image);
+
+        for (size_t rgbFormatsIndex = 0; rgbFormatsIndex < rgbFormatsCount;
+             ++rgbFormatsIndex) {
+          for (size_t upsamplingsIndex = 0; upsamplingsIndex < upsamplingsCount;
+               ++upsamplingsIndex) {
+            for (size_t rgbDepthsIndex = 0; rgbDepthsIndex < rgbDepthsCount;
+                 ++rgbDepthsIndex) {
+              // Convert to RGB
+              rgb.format = rgbFormats[rgbFormatsIndex];
+              rgb.depth = rgbDepths[rgbDepthsIndex];
+              rgb.chromaUpsampling = upsamplings[upsamplingsIndex];
+              avifRGBImageAllocatePixels(&rgb);
+              avifResult rgbResult = avifImageYUVToRGB(decoder->image, &rgb);
+              if (rgbResult == AVIF_RESULT_OK) {
+                for (size_t yuvDepthsIndex = 0; yuvDepthsIndex < yuvDepthsCount;
+                     ++yuvDepthsIndex) {
+                  // ... and back to YUV
+                  avifImage *tempImage = avifImageCreate(
+                      decoder->image->width, decoder->image->height,
+                      yuvDepths[yuvDepthsIndex], decoder->image->yuvFormat);
+                  avifResult yuvResult = avifImageRGBToYUV(tempImage, &rgb);
+                  if (yuvResult != AVIF_RESULT_OK) {
+                  }
+                  avifImageDestroy(tempImage);
+                }
+              }
+
+              avifRGBImageFreePixels(&rgb);
+            }
+          }
+        }
+      }
+
+      if (loop != 1) {
+        result = avifDecoderReset(decoder);
+        if (result == AVIF_RESULT_OK) {
+        } else {
+          break;
+        }
+      }
+    }
+  }
+
+  avifDecoderDestroy(decoder);
+  return 0; // Non-zero return values are reserved for future use.
+}