Adding third_party/openh264/src, build files and unittests

third_party/openh264/openh264.gyp

+# Copyright 2015 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+{
+  'conditions': [
+    ['build_openh264==1', {
+      # === Building with OpenH264 ===
+      'includes': [
+        'openh264.gypi',
+      ],
+      'variables': {
+        # Defines shared by all openh264 targets.
+        'openh264_defines': [
+          # This is supposed to be defined in version.h but isn't for some
+          # windows and mac targets. It's only used for debug printing so we fix
+          # this issue by give it a default value.
+          'VERSION_NUMBER="openh264 v.?.?"',

[torbjorng, 2015/11/05 13:18:25]

If it isn't defined for some builds, one can safely assume the wrong version.h
is grabbed.  This in turn is caused by the include path.

[hbos_chromium, 2015/11/10 14:36:47]

I don't like this workaround but I'd rather try to address it in a follow-up CL.

+        ],
+        'conditions': [
+          # cflags shared by all openh264 targets.
+          ['OS!="win"', {
+            'openh264_cflags_add': [
+              '-fvisibility=default',

[torbjorng, 2015/11/05 13:18:25]

See comment on other file.

+              '-w',
+            ],
+          }, {
+            'openh264_cflags_add': [
+              '/w',
+            ],
+          }],
+          # Defines that are specific to target platforms.
+          ['OS!="android"', {
+            'openh264_defines_os': [],
+          }, {
+            'openh264_defines_os': [
+              'ANDROID_NDK',
+            ],
+          }],
+        ],
+      },
+      'targets': [
+        {
+          'target_name': 'openh264_common',
+          'type': 'static_library',
+          'conditions': [
+            ['OS=="android"', {
+              'dependencies': [
+                # Defines "android_get/setCpu..." functions. The original
+                # OpenH264 build files replaces these using macros for
+                # "wels_..." versions of the same functions. We do not have
+                # access to these and use the <cpu-features.h> ones instead.
+                '<(DEPTH)/build/android/ndk.gyp:cpu_features',
+              ],
+            }],
+          ],
+          'defines': [

[torbjorng, 2015/11/05 13:18:25]

Presumably, the following block of code could be shared for all targets...?

[hbos_chromium, 2015/11/10 14:36:47]

Now using 'target_defaults' instead.

+            '<@(openh264_defines)',
+            '<@(openh264_defines_os)',
+          ],
+          'cflags': [ '<@(openh264_cflags_add)', ],
+          'xcode_settings': {
+            'WARNING_CFLAGS': [ '<@(openh264_cflags_add)', ],
+          },
+          'include_dirs': [
+            'src/codec/api/svc',
+            'src/codec/common/inc',
+            'src/codec/common/src',
+          ],
+          'sources': [
+            '<@(openh264_common_sources)',
+          ],
+        },
+        {
+          'target_name': 'openh264_processing',
+          'type': 'static_library',
+          'dependencies': [
+            'openh264_common',
+          ],
+          'defines': [
+            '<@(openh264_defines)',
+            '<@(openh264_defines_os)',
+          ],
+          'cflags': [ '<@(openh264_cflags_add)', ],
+          'xcode_settings': {
+            'WARNING_CFLAGS': [ '<@(openh264_cflags_add)', ],
+          },
+          'include_dirs': [
+            'src/codec/api/svc',
+            'src/codec/common/inc',
+            'src/codec/common/src',
+            'src/codec/processing/interface',
+            'src/codec/processing/interface/',
+            'src/codec/processing/src/adaptivequantization',
+            'src/codec/processing/src/backgrounddetection',
+            'src/codec/processing/src/common',
+            'src/codec/processing/src/complexityanalysis',
+            'src/codec/processing/src/denoise',
+            'src/codec/processing/src/downsample',
+            'src/codec/processing/src/imagerotate',
+            'src/codec/processing/src/scenechangedetection',
+            'src/codec/processing/src/scrolldetection',
+            'src/codec/processing/src/vaacalc',
+          ],
+          'sources': [
+            '<@(openh264_processing_sources)',
+          ],
+        },
+        {
+          'target_name': 'openh264_encoder',
+          'type': 'static_library',
+          'dependencies': [
+            'openh264_common',
+            'openh264_processing',
+          ],
+          'defines': [
+            '<@(openh264_defines)',
+            '<@(openh264_defines_os)',
+          ],
+          'cflags': [ '<@(openh264_cflags_add)', ],
+          'xcode_settings': {
+            'WARNING_CFLAGS': [ '<@(openh264_cflags_add)', ],
+          },
+          'include_dirs': [
+            'src/codec/api/svc',
+            'src/codec/common/inc',
+            'src/codec/common/src',
+            'src/codec/encoder/core/inc',
+            'src/codec/encoder/core/src',
+            'src/codec/encoder/plus/inc',
+            'src/codec/encoder/plus/src',
+            'src/codec/processing/interface/',
+          ],
+          'sources': [
+            '<@(openh264_encoder_sources)',
+          ],
+        },
+        {
+          'target_name': 'openh264_decoder',
+          'type': 'static_library',
+          'dependencies': [
+            'openh264_common',
+            'openh264_processing',
+          ],
+          'defines': [
+            '<@(openh264_defines)',
+            '<@(openh264_defines_os)',
+            # Disables decoder_core.cpp debug prints.
+            'CODEC_FOR_TESTBED',
+          ],
+          'cflags': [ '<@(openh264_cflags_add)', ],
+          'xcode_settings': {
+            'WARNING_CFLAGS': [ '<@(openh264_cflags_add)', ],
+          },
+          'include_dirs': [
+            'src/codec/api/svc',
+            'src/codec/common/inc',
+            'src/codec/common/src',
+            'src/codec/decoder/core/inc',
+            'src/codec/decoder/core/src',
+            'src/codec/decoder/plus/inc',
+            'src/codec/decoder/plus/src',
+            'src/codec/processing/interface/',
+          ],
+          'sources': [
+            '<@(openh264_decoder_sources)',
+          ],
+        },
+      ],
+    },{
+      # Building without OpenH264. Defining a dummy target because every build
+      # file needs to have at least one target.
+      'targets': [
+        {
+          'target_name': 'openh264_dummy_target',
+          'type': 'none',
+        }
+      ],
+    }],
+  ],
+}