Update Piex

Add support for Sony ARW 4.0.

Fix overflow issue in GetOlympusPreviewImage.

Fix issue with Canon RP raw CR3 files.

piex.gyp

@@ -18,11 +18,13 @@
   'type': 'static_library',
   'sources': [
     'src/piex.cc',
+    'src/piex_cr3.cc',
     'src/tiff_parser.cc',
   ],
   'variables': {
     'headers': [
       'src/piex.h',
+      'src/piex_cr3.h',
       'src/piex_types.h',
       'src/tiff_parser.h',
     ],

src/image_type_recognition/image_type_recognition_lite.cc

@@ -183,13 +183,14 @@ class ArwTypeChecker : public TypeChecker {
     // Search for (kSignatureFileTypeSection + kSignatureVersions[i]) in first
     // requested bytes
     const string kSignatureSection("\x00\xb0\x01\x00\x04\x00\x00\x00", 8);
-    const int kSignatureVersionsSize = 5;
+    const int kSignatureVersionsSize = 6;
     const string kSignatureVersions[kSignatureVersionsSize] = {
         string("\x02\x00", 2),  // ARW 1.0
         string("\x03\x00", 2),  // ARW 2.0
         string("\x03\x01", 2),  // ARW 2.1
         string("\x03\x02", 2),  // ARW 2.2
         string("\x03\x03", 2),  // ARW 2.3
+        string("\x04\x00", 2),  // ARW 4.0
     };
     bool matched = false;
     for (int i = 0; i < kSignatureVersionsSize; ++i) {

src/piex.cc

@@ -283,9 +283,9 @@ bool GetOlympusPreviewImage(StreamInterface* stream,
   }
 
   if (raw_processing_ifd.Has(kOlymTagAspectFrame)) {
-    std::vector<std::uint32_t> aspect_frame(4);
+    std::vector<std::uint32_t> aspect_frame;
     if (raw_processing_ifd.Get(kOlymTagAspectFrame, &aspect_frame) &&
-        aspect_frame[2] > aspect_frame[0] &&
+        aspect_frame.size() == 4 && aspect_frame[2] > aspect_frame[0] &&
         aspect_frame[3] > aspect_frame[1]) {
       preview_image_data->full_width = aspect_frame[2] - aspect_frame[0] + 1;
       preview_image_data->full_height = aspect_frame[3] - aspect_frame[1] + 1;

src/piex_cr3.cc

@@ -41,7 +41,7 @@ constexpr Uuid kUuidPrvw = {0xea, 0xf4, 0x2b, 0x5e, 0x1c, 0x98, 0x4b, 0x88,
                             0xb9, 0xfb, 0xb7, 0xdc, 0x40, 0x6e, 0x4d, 0x16};
 
 constexpr size_t kTagSize = 4;
-using BoxTag = std::array<std::uint8_t, kTagSize>;
+using BoxTag = std::array<char, kTagSize>;
 
 constexpr BoxTag NewTag(const char s[kTagSize + 1]) {
   return BoxTag{s[0], s[1], s[2], s[3]};
@@ -232,8 +232,8 @@ Box GetNextBox(StreamInterface* stream, size_t offset) {
     return Box();
   }
   BoxTag tag;
-  Error status =
-      stream->GetData(offset + sizeof(length_32), kTagSize, tag.data());
+  Error status = stream->GetData(offset + sizeof(length_32), kTagSize,
+                                 reinterpret_cast<std::uint8_t*>(tag.data()));
   if (status != kOk) {
     return Box();
   }
@@ -531,7 +531,7 @@ bool IsImage(StreamInterface* stream, const Image& image) {
 
 Error Cr3GetPreviewData(StreamInterface* stream,
                         PreviewImageData* preview_image_data) {
-  ProcessData data{preview_image_data};
+  ProcessData data{.preview_image_data = preview_image_data};
   if (!ProcessStream(stream, kMdatTag, &data)) {
     return kFail;
   }
@@ -548,7 +548,7 @@ Error Cr3GetPreviewData(StreamInterface* stream,
 
 bool Cr3GetOrientation(StreamInterface* stream, std::uint32_t* orientation) {
   PreviewImageData preview_image_data;
-  ProcessData data{&preview_image_data};
+  ProcessData data{.preview_image_data = &preview_image_data};
   if (ProcessStream(stream, kCmt1Tag, &data)) {
     *orientation = preview_image_data.exif_orientation;
     return true;

src/tiff_parser.cc

@@ -27,7 +27,6 @@ namespace {
 
 using tiff_directory::Endian;
 using tiff_directory::Rational;
-using tiff_directory::SRational;
 using tiff_directory::SizeOfType;
 using tiff_directory::TIFF_TYPE_LONG;
 using tiff_directory::TIFF_TYPE_UNDEFINED;
@@ -396,8 +395,8 @@ bool GetImageData(const TiffDirectory& tiff_directory, StreamInterface* stream,
       default:
         return false;
     }
-    length = static_cast<std::uint32_t>(
-        std::accumulate(strip_byte_counts.begin(), strip_byte_counts.end(), 0));
+    length = static_cast<std::uint32_t>(std::accumulate(
+        strip_byte_counts.begin(), strip_byte_counts.end(), 0U));
     offset = strip_offsets[0];
   } else if (tiff_directory.Has(kPanaTagJpegImage)) {
     if (!tiff_directory.GetOffsetAndLength(
@@ -715,14 +714,14 @@ bool TiffParser::Parse(const TagSet& desired_tags,
   return true;
 }
 
-bool TiffParser::ParseIfd(const std::uint32_t offset_to_ifd,
+bool TiffParser::ParseIfd(const std::uint32_t ifd_offset,
                           const TagSet& desired_tags,
                           const std::uint16_t max_number_ifds,
                           IfdVector* tiff_directory) {
   std::uint32_t next_ifd_offset;
   TiffDirectory tiff_ifd(static_cast<Endian>(endian_));
-  if (!ParseDirectory(tiff_offset_, offset_to_ifd, endian_, desired_tags,
-                      stream_, &tiff_ifd, &next_ifd_offset) ||
+  if (!ParseDirectory(tiff_offset_, ifd_offset, endian_, desired_tags, stream_,
+                      &tiff_ifd, &next_ifd_offset) ||
       !ParseSubIfds(tiff_offset_, desired_tags, max_number_ifds, endian_,
                     stream_, &tiff_ifd)) {
     return false;

src/tiff_parser.h

@@ -184,7 +184,7 @@ class TiffParser {
   // Runs over the Tiff IFD, Exif IFD and subIFDs to get the preview image data.
   // Returns false if something with the Tiff tags is wrong.
   bool GetPreviewImageData(const TiffContent& tiff_content,
-                           PreviewImageData* image_metadata);
+                           PreviewImageData* preview_image_data);
 
   // Returns false if called more that once or something with the Tiff data is
   // wrong.