Prototype of RAW decoding in Skia.

gyp/piex.gyp

+# Copyright 2015 Google Inc. All Rights Reserved.
+#
+# 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.
+{
+'variables': {
+  'skia_warnings_as_errors': 0,
+},
+'targets': [{
+  'target_name': 'piex-selector',
+  'type': 'none',
+  'conditions': [
+    [ 'skia_android_framework', {
+        'dependencies': [ 'android_deps.gyp:piex' ],
+        'export_dependent_settings': [ 'android_deps.gyp:piex' ],
+      }, {
+        'dependencies': [ 'piex' ],
+        'export_dependent_settings': [ 'piex' ],
+    }]
+  ]
+},{
+  'target_name': 'piex',
+  'type': 'static_library',
+  'sources': [
+    '../third_party/externals/piex/src/piex.cc',
+    '../third_party/externals/piex/src/tiff_parser.cc',

[scroggo, 2016/01/06 22:30:20]

This supports TIFF? Maybe this covers skbug.com/4593?

[ebrauer, 2016/01/07 09:05:17]

It does not support (implement) the TIFF specification. However, it is possible
to parse through tiff IFDs (and sub IFDs and EXIF) to gather predefined tags. It
might be possible to extend Piex to give you some preview data from tiff files,
but I think not too many tiff files store jpeg compressed preview images.

+  ],
+  'variables': {
+    'headers': [
+      '../third_party/externals/piex/src/piex.h',
+      '../third_party/externals/piex/src/piex_types.h',
+      '../third_party/externals/piex/src/tiff_parser.h',
+    ],
+  },
+  'include_dirs': ['../third_party/externals/piex'],
+  'cflags': ['-Wsign-compare'],
+  'dependencies': [
+    'binary_parse',
+    'image_type_recognition',
+    'tiff_directory',
+  ],
+  'direct_dependent_settings': {
+    'include_dirs': [
+      '../third_party/externals/piex',
+    ],
+  },
+}, {
+  'target_name': 'binary_parse',
+  'type': 'static_library',
+  'sources': [
+      '../third_party/externals/piex/src/binary_parse/cached_paged_byte_array.cc',
+      '../third_party/externals/piex/src/binary_parse/range_checked_byte_ptr.cc',
+  ],
+  'variables': {
+    'headers': [
+      '../third_party/externals/piex/src/binary_parse/cached_paged_byte_array.h',
+      '../third_party/externals/piex/src/binary_parse/range_checked_byte_ptr.h',
+    ],
+  },
+  'include_dirs': ['../third_party/externals/piex'],
+  'cflags': ['-Wsign-compare'],
+}, {
+  'target_name': 'image_type_recognition',
+  'type': 'static_library',
+  'sources': [
+    '../third_party/externals/piex/src/image_type_recognition/image_type_recognition_lite.cc',
+  ],
+  'variables': {
+    'headers': ['../third_party/externals/piex/src/image_type_recognition/image_type_recognition_lite.h'],
+  },
+  'include_dirs': ['../third_party/externals/piex'],
+  'cflags': ['-Wsign-compare'],
+  'dependencies': ['binary_parse'],
+}, {
+  'target_name': 'tiff_directory',
+  'type': 'static_library',
+  'sources': [
+    '../third_party/externals/piex/src/tiff_directory/tiff_directory.cc',
+  ],
+  'variables': {
+    'headers': ['../third_party/externals/piex/src/tiff_directory/tiff_directory.h'],
+  },
+  'include_dirs': ['../third_party/externals/piex'],
+  'dependencies': ['binary_parse'],
+}],
+}