Split video_capture_module specific implementation (external vs internal capture)

into its own targets. Dependencies must link directly with the desired one.

Targets linking with libjingle_media:
 - internal implementation when build_with_chromium=0, default otherwise.

Targets linking with default/external capture implementation:
 - anything dependent on webrtc_test_common
 - anything dependent on video_engine_core

Targets linking with internal capture implementation:
 - vie_auto_test
 - anything dependent on webrtc_test_renderer

GN changes:
 - Not many since there is almost no test definitions.

TESTED: passes all the bots. If this inadvertently breaks a target please fix the linking rules so the target has the desired implementation linked in.

BUG=3768
R=glaznev@webrtc.org
TBR=kjellander@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/24589004

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@7209 4adac7df-926f-26a2-2b94-8c16560cd09d

8 files changed, 254 insertions, 229 deletions

diff --git a/build/common.gypi b/build/common.gypi
index 4b17eb4d..72876009 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -132,9 +132,6 @@
         # Exclude internal ADM since Chromium uses its own IO handling.
         'include_internal_audio_device%': 0,
 
-        # Exclude internal VCM in Chromium build.
-        'include_internal_video_capture%': 0,
-
         # Exclude internal video render module in Chromium build.
         'include_internal_video_render%': 0,
       }, {  # Settings for the standalone (not-in-Chromium) build.
@@ -145,7 +142,6 @@
 
         'include_pulse_audio%': 1,
         'include_internal_audio_device%': 1,
-        'include_internal_video_capture%': 1,
         'include_internal_video_render%': 1,
       }],
       ['build_with_libjingle==1', {
diff --git a/build/webrtc.gni b/build/webrtc.gni
index d46b8c64..5e3adfaa 100644
--- a/build/webrtc.gni
+++ b/build/webrtc.gni
@@ -74,9 +74,6 @@ declare_args() {
     # Exclude internal ADM since Chromium uses its own IO handling.
     rtc_include_internal_audio_device = false
 
-    # Exclude internal VCM in Chromium build.
-    rtc_include_internal_video_capture = false
-
     # Exclude internal video render module in Chromium build.
     rtc_include_internal_video_render = false
   } else {
@@ -89,7 +86,6 @@ declare_args() {
 
     rtc_include_pulse_audio = true
     rtc_include_internal_audio_device = true
-    rtc_include_internal_video_capture = true
     rtc_include_internal_video_render = true
   }
 
diff --git a/modules/video_capture/BUILD.gn b/modules/video_capture/BUILD.gn
index 7d6ddc0e..56322738 100644
--- a/modules/video_capture/BUILD.gn
+++ b/modules/video_capture/BUILD.gn
@@ -8,16 +8,10 @@
 
 import("../../build/webrtc.gni")
 
-config("video_capture_config") {
-  if (is_ios) {
-    libs = [
-      "AVFoundation.framework",
-      "CoreMedia.framework",
-      "CoreVideo.framework",
-    ]
-  }
-}
-
+# Note this target is missing an implementation for the video capture.
+# Targets must link with either 'video_capture_impl' or
+# 'video_capture_internal_impl' depending on whether they want to
+# use the internal capturer.
 source_set("video_capture") {
   sources = [
     "device_info_impl.cc",
@@ -32,108 +26,138 @@ source_set("video_capture") {
     "video_capture_impl.h",
   ]
 
-  libs = []
-  deps = []
-
-  if (rtc_include_internal_video_capture) {
-    if (is_linux) {
-      sources += [
-        "linux/device_info_linux.cc",
-        "linux/device_info_linux.h",
-        "linux/video_capture_linux.cc",
-        "linux/video_capture_linux.h",
-      ]
-    }
-    if (is_mac) {
-      sources += [
-        "mac/qtkit/video_capture_qtkit.h",
-        "mac/qtkit/video_capture_qtkit.mm",
-        "mac/qtkit/video_capture_qtkit_info.h",
-        "mac/qtkit/video_capture_qtkit_info.mm",
-        "mac/qtkit/video_capture_qtkit_info_objc.h",
-        "mac/qtkit/video_capture_qtkit_info_objc.mm",
-        "mac/qtkit/video_capture_qtkit_objc.h",
-        "mac/qtkit/video_capture_qtkit_objc.mm",
-        "mac/qtkit/video_capture_qtkit_utility.h",
-        "mac/video_capture_mac.mm",
-      ]
-
-      libs += [
-        "CoreVideo.framework",
-        "QTKit.framework",
-      ]
-    }
-    if (is_win) {
-      sources += [
-        "windows/device_info_ds.cc",
-        "windows/device_info_ds.h",
-        "windows/device_info_mf.cc",
-        "windows/device_info_mf.h",
-        "windows/help_functions_ds.cc",
-        "windows/help_functions_ds.h",
-        "windows/sink_filter_ds.cc",
-        "windows/sink_filter_ds.h",
-        "windows/video_capture_ds.cc",
-        "windows/video_capture_ds.h",
-        "windows/video_capture_factory_windows.cc",
-        "windows/video_capture_mf.cc",
-        "windows/video_capture_mf.h",
-      ]
-
-      libs += [ "Strmiids.lib" ]
-      deps += [ "//third_party/winsdk_samples"]
-    }
-    if (is_android) {
-      sources += [
-        "android/device_info_android.cc",
-        "android/device_info_android.h",
-        "android/video_capture_android.cc",
-        "android/video_capture_android.h",
-      ]
-
-      deps += [
-        "//third_party/icu:icuuc",
-        "//third_party/jsoncpp",
-      ]
-    }
-    if (is_ios) {
-      sources += [
-        "ios/device_info_ios.h",
-        "ios/device_info_ios.mm",
-        "ios/device_info_ios_objc.h",
-        "ios/device_info_ios_objc.mm",
-        "ios/rtc_video_capture_ios_objc.h",
-        "ios/rtc_video_capture_ios_objc.mm",
-        "ios/video_capture_ios.h",
-        "ios/video_capture_ios.mm",
-      ]
-
-      cflags += [
-        "-fobjc-arc",  # CLANG_ENABLE_OBJC_ARC = YES.
-        # To avoid warnings for deprecated videoMinFrameDuration and
-        # videoMaxFrameDuration properties in iOS 7.0.
-        # See webrtc:3705 for more details.
-        "-Wno-deprecated-declarations",
-      ]
-    }
-  } else {
-    sources += [
-      "external/device_info_external.cc",
-      "external/video_capture_external.cc",
-    ]
+  deps = [
+    "../../common_video",
+    "../../system_wrappers",
+    "../utility",
+  ]
+
+  if (is_clang) {
+    # Suppress warnings from Chrome's Clang plugins.
+    # See http://code.google.com/p/webrtc/issues/detail?id=163 for details.
+    configs -= [ "//build/config/clang:find_bad_constructs" ]
   }
+}
+
+source_set("video_capture_impl") {
+  sources = [
+    "external/device_info_external.cc",
+    "external/video_capture_external.cc",
+  ]
 
-  all_dependent_configs = [ ":video_capture_config"]
+  deps = [
+    ":video_capture",
+  ]
 
   if (is_clang) {
     # Suppress warnings from Chrome's Clang plugins.
     # See http://code.google.com/p/webrtc/issues/detail?id=163 for details.
     configs -= [ "//build/config/clang:find_bad_constructs" ]
   }
+}
 
-  deps += [
-    "../../common_video",
-    "../../system_wrappers",
-    "../utility",
+config("video_capture_internal_impl_config") {
+  if (is_ios) {
+    libs = [
+      "AVFoundation.framework",
+      "CoreMedia.framework",
+      "CoreVideo.framework",
+    ]
+  }
+}
+
+source_set("video_capture_internal_impl") {
+  deps = [
+    ":video_capture",
   ]
+
+  if (is_linux) {
+    sources = [
+      "linux/device_info_linux.cc",
+      "linux/device_info_linux.h",
+      "linux/video_capture_linux.cc",
+      "linux/video_capture_linux.h",
+    ]
+  }
+  if (is_mac) {
+    sources = [
+      "mac/qtkit/video_capture_qtkit.h",
+      "mac/qtkit/video_capture_qtkit.mm",
+      "mac/qtkit/video_capture_qtkit_info.h",
+      "mac/qtkit/video_capture_qtkit_info.mm",
+      "mac/qtkit/video_capture_qtkit_info_objc.h",
+      "mac/qtkit/video_capture_qtkit_info_objc.mm",
+      "mac/qtkit/video_capture_qtkit_objc.h",
+      "mac/qtkit/video_capture_qtkit_objc.mm",
+      "mac/qtkit/video_capture_qtkit_utility.h",
+      "mac/video_capture_mac.mm",
+    ]
+
+    libs = [
+      "CoreVideo.framework",
+      "QTKit.framework",
+    ]
+  }
+  if (is_win) {
+    sources = [
+      "windows/device_info_ds.cc",
+      "windows/device_info_ds.h",
+      "windows/device_info_mf.cc",
+      "windows/device_info_mf.h",
+      "windows/help_functions_ds.cc",
+      "windows/help_functions_ds.h",
+      "windows/sink_filter_ds.cc",
+      "windows/sink_filter_ds.h",
+      "windows/video_capture_ds.cc",
+      "windows/video_capture_ds.h",
+      "windows/video_capture_factory_windows.cc",
+      "windows/video_capture_mf.cc",
+      "windows/video_capture_mf.h",
+    ]
+
+    libs = [ "Strmiids.lib" ]
+
+    deps += [ "//third_party/winsdk_samples"]
+  }
+  if (is_android) {
+    sources = [
+      "android/device_info_android.cc",
+      "android/device_info_android.h",
+      "android/video_capture_android.cc",
+      "android/video_capture_android.h",
+    ]
+
+    deps += [
+      "//third_party/icu:icuuc",
+      "//third_party/jsoncpp",
+    ]
+  }
+  if (is_ios) {
+    sources = [
+      "ios/device_info_ios.h",
+      "ios/device_info_ios.mm",
+      "ios/device_info_ios_objc.h",
+      "ios/device_info_ios_objc.mm",
+      "ios/rtc_video_capture_ios_objc.h",
+      "ios/rtc_video_capture_ios_objc.mm",
+      "ios/video_capture_ios.h",
+      "ios/video_capture_ios.mm",
+    ]
+
+    cflags = [
+      "-fobjc-arc",  # CLANG_ENABLE_OBJC_ARC = YES.
+      # To avoid warnings for deprecated videoMinFrameDuration and
+      # videoMaxFrameDuration properties in iOS 7.0.
+      # See webrtc:3705 for more details.
+      "-Wno-deprecated-declarations",
+    ]
+  }
+
+  all_dependent_configs = [ ":video_capture_internal_impl_config" ]
+
+  if (is_clang) {
+    # Suppress warnings from Chrome's Clang plugins.
+    # See http://code.google.com/p/webrtc/issues/detail?id=163 for details.
+    configs -= [ "//build/config/clang:find_bad_constructs" ]
+  }
 }
diff --git a/modules/video_capture/video_capture.gypi b/modules/video_capture/video_capture.gypi
index 68d41968..1843405e 100644
--- a/modules/video_capture/video_capture.gypi
+++ b/modules/video_capture/video_capture.gypi
@@ -9,6 +9,10 @@
 {
   'targets': [
     {
+      # Note this library is missing an implementation for the video capture.
+      # Targets must link with either 'video_capture_module_impl' or
+      # 'video_capture_module_internal_impl' depending on whether they want to
+      # use the internal capturer.
       'target_name': 'video_capture_module',
       'type': 'static_library',
       'dependencies': [
@@ -28,128 +32,130 @@
         'video_capture_impl.cc',
         'video_capture_impl.h',
       ],
+    },
+    {
+      # Default video capture module implementation that only supports external
+      # capture.
+      'target_name': 'video_capture_module_impl',
+      'type': 'static_library',
+      'dependencies': [
+        'video_capture_module',
+      ],
+      'sources': [
+        'external/device_info_external.cc',
+        'external/video_capture_external.cc',
+      ],
+    },
+    {
+      'target_name': 'video_capture_module_internal_impl',
+      'type': 'static_library',
+      'dependencies': [
+        'video_capture_module',
+      ],
       'conditions': [
-        ['include_internal_video_capture==0', {
+        ['OS=="linux"', {
           'sources': [
-            'external/device_info_external.cc',
-            'external/video_capture_external.cc',
+            'linux/device_info_linux.cc',
+            'linux/device_info_linux.h',
+            'linux/video_capture_linux.cc',
+            'linux/video_capture_linux.h',
           ],
-        }, {  # include_internal_video_capture == 1
-          'conditions': [
-            ['OS=="linux"', {
-              'sources': [
-                'linux/device_info_linux.cc',
-                'linux/device_info_linux.h',
-                'linux/video_capture_linux.cc',
-                'linux/video_capture_linux.h',
-              ],
-            }],  # linux
-            ['OS=="mac"', {
-              'sources': [
-                'mac/qtkit/video_capture_qtkit.h',
-                'mac/qtkit/video_capture_qtkit.mm',
-                'mac/qtkit/video_capture_qtkit_info.h',
-                'mac/qtkit/video_capture_qtkit_info.mm',
-                'mac/qtkit/video_capture_qtkit_info_objc.h',
-                'mac/qtkit/video_capture_qtkit_info_objc.mm',
-                'mac/qtkit/video_capture_qtkit_objc.h',
-                'mac/qtkit/video_capture_qtkit_objc.mm',
-                'mac/qtkit/video_capture_qtkit_utility.h',
-                'mac/video_capture_mac.mm',
-              ],
-              'link_settings': {
-                'xcode_settings': {
-                  'OTHER_LDFLAGS': [
-                    '-framework Cocoa',
-                    '-framework CoreVideo',
-                    '-framework QTKit',
-                  ],
-                },
-              },
-            }],  # mac
-            ['OS=="win"', {
-              'dependencies': [
-                '<(DEPTH)/third_party/winsdk_samples/winsdk_samples.gyp:directshow_baseclasses',
-              ],
-              'sources': [
-                'windows/device_info_ds.cc',
-                'windows/device_info_ds.h',
-                'windows/device_info_mf.cc',
-                'windows/device_info_mf.h',
-                'windows/help_functions_ds.cc',
-                'windows/help_functions_ds.h',
-                'windows/sink_filter_ds.cc',
-                'windows/sink_filter_ds.h',
-                'windows/video_capture_ds.cc',
-                'windows/video_capture_ds.h',
-                'windows/video_capture_factory_windows.cc',
-                'windows/video_capture_mf.cc',
-                'windows/video_capture_mf.h',
-              ],
-              'link_settings': {
-                'libraries': [
-                  '-lStrmiids.lib',
-                ],
-              },
-            }],  # win
-            ['OS=="android"', {
-              'dependencies': [
-                '<(DEPTH)/third_party/icu/icu.gyp:icuuc',
-                '<(DEPTH)/third_party/jsoncpp/jsoncpp.gyp:jsoncpp',
-              ],
-              'sources': [
-                'android/device_info_android.cc',
-                'android/device_info_android.h',
-                'android/video_capture_android.cc',
-                'android/video_capture_android.h',
+        }],  # linux
+        ['OS=="mac"', {
+          'sources': [
+            'mac/qtkit/video_capture_qtkit.h',
+            'mac/qtkit/video_capture_qtkit.mm',
+            'mac/qtkit/video_capture_qtkit_info.h',
+            'mac/qtkit/video_capture_qtkit_info.mm',
+            'mac/qtkit/video_capture_qtkit_info_objc.h',
+            'mac/qtkit/video_capture_qtkit_info_objc.mm',
+            'mac/qtkit/video_capture_qtkit_objc.h',
+            'mac/qtkit/video_capture_qtkit_objc.mm',
+            'mac/qtkit/video_capture_qtkit_utility.h',
+            'mac/video_capture_mac.mm',
+          ],
+          'link_settings': {
+            'xcode_settings': {
+              'OTHER_LDFLAGS': [
+                '-framework Cocoa',
+                '-framework CoreVideo',
+                '-framework QTKit',
               ],
-            }],  # android
-            ['OS=="ios"', {
-              'sources': [
-                'ios/device_info_ios.h',
-                'ios/device_info_ios.mm',
-                'ios/device_info_ios_objc.h',
-                'ios/device_info_ios_objc.mm',
-                'ios/rtc_video_capture_ios_objc.h',
-                'ios/rtc_video_capture_ios_objc.mm',
-                'ios/video_capture_ios.h',
-                'ios/video_capture_ios.mm',
+            },
+          },
+        }],  # mac
+        ['OS=="win"', {
+          'dependencies': [
+            '<(DEPTH)/third_party/winsdk_samples/winsdk_samples.gyp:directshow_baseclasses',
+          ],
+          'sources': [
+            'windows/device_info_ds.cc',
+            'windows/device_info_ds.h',
+            'windows/device_info_mf.cc',
+            'windows/device_info_mf.h',
+            'windows/help_functions_ds.cc',
+            'windows/help_functions_ds.h',
+            'windows/sink_filter_ds.cc',
+            'windows/sink_filter_ds.h',
+            'windows/video_capture_ds.cc',
+            'windows/video_capture_ds.h',
+            'windows/video_capture_factory_windows.cc',
+            'windows/video_capture_mf.cc',
+            'windows/video_capture_mf.h',
+          ],
+          'link_settings': {
+            'libraries': [
+              '-lStrmiids.lib',
+            ],
+          },
+        }],  # win
+        ['OS=="android"', {
+          'dependencies': [
+            '<(DEPTH)/third_party/icu/icu.gyp:icuuc',
+            '<(DEPTH)/third_party/jsoncpp/jsoncpp.gyp:jsoncpp',
+          ],
+          'sources': [
+            'android/device_info_android.cc',
+            'android/device_info_android.h',
+            'android/video_capture_android.cc',
+            'android/video_capture_android.h',
+          ],
+        }],  # android
+        ['OS=="ios"', {
+          'sources': [
+            'ios/device_info_ios.h',
+            'ios/device_info_ios.mm',
+            'ios/device_info_ios_objc.h',
+            'ios/device_info_ios_objc.mm',
+            'ios/rtc_video_capture_ios_objc.h',
+            'ios/rtc_video_capture_ios_objc.mm',
+            'ios/video_capture_ios.h',
+            'ios/video_capture_ios.mm',
+          ],
+          'xcode_settings': {
+            'CLANG_ENABLE_OBJC_ARC': 'YES',
+            'WARNING_CFLAGS':  [
+              # To avoid warnings for deprecated videoMinFrameDuration and
+              # videoMaxFrameDuration properties in iOS 7.0.
+              # See webrtc:3705 for more details.
+              '-Wno-deprecated-declarations',
+            ],
+          },
+          'all_dependent_settings': {
+            'xcode_settings': {
+              'OTHER_LDFLAGS': [
+                '-framework AVFoundation',
+                '-framework CoreMedia',
+                '-framework CoreVideo',
+                '-framework UIKit',
               ],
-              'xcode_settings': {
-                'CLANG_ENABLE_OBJC_ARC': 'YES',
-                'WARNING_CFLAGS':  [
-                  # To avoid warnings for deprecated videoMinFrameDuration and
-                  # videoMaxFrameDuration properties in iOS 7.0.
-                  # See webrtc:3705 for more details.
-                  '-Wno-deprecated-declarations',
-                ],
-              },
-              'all_dependent_settings': {
-                'xcode_settings': {
-                  'OTHER_LDFLAGS': [
-                    '-framework AVFoundation',
-                    '-framework CoreMedia',
-                    '-framework CoreVideo',
-                    '-framework UIKit',
-                  ],
-                },
-              },
-            }],  # ios
-          ], # conditions
-        }],  # include_internal_video_capture
+            },
+          },
+        }],  # ios
       ], # conditions
-    },
+    }
   ],
   'conditions': [
-    ['include_tests==1 and OS=="android"', {
-      # Use WebRTC capture code for Android APK tests that are built from a
-      # Chromium checkout. Normally when built as a part of Chromium the
-      # Chromium video capture code is used. This overrides the default in
-      # webrtc/build/common.gypi.
-      'variables': {
-        'include_internal_video_capture': 1,
-      },
-    }],
     ['include_tests==1', {
       'targets': [
         {
@@ -157,6 +163,7 @@
           'type': '<(gtest_target_type)',
           'dependencies': [
             'video_capture_module',
+	    'video_capture_module_internal_impl',
             'webrtc_utility',
             '<(webrtc_root)/system_wrappers/source/system_wrappers.gyp:system_wrappers',
             '<(DEPTH)/testing/gtest.gyp:gtest',
diff --git a/test/webrtc_test_common.gyp b/test/webrtc_test_common.gyp
index be6b303f..9d7cfce5 100644
--- a/test/webrtc_test_common.gyp
+++ b/test/webrtc_test_common.gyp
@@ -59,7 +59,7 @@
         '<(DEPTH)/testing/gtest.gyp:gtest',
         '<(DEPTH)/third_party/gflags/gflags.gyp:gflags',
         '<(webrtc_root)/modules/modules.gyp:media_file',
-        '<(webrtc_root)/modules/modules.gyp:video_capture_module',
+        '<(webrtc_root)/modules/modules.gyp:video_capture_module_impl',
         '<(webrtc_root)/test/test.gyp:frame_generator',
         '<(webrtc_root)/test/test.gyp:test_support',
         '<(webrtc_root)/webrtc.gyp:webrtc',
@@ -107,7 +107,7 @@
       ],
       'dependencies': [
         '<(DEPTH)/testing/gtest.gyp:gtest',
-        '<(webrtc_root)/modules/modules.gyp:video_capture_module',
+        '<(webrtc_root)/modules/modules.gyp:video_capture_module_internal_impl',
         '<(webrtc_root)/modules/modules.gyp:media_file',
         '<(webrtc_root)/test/test.gyp:frame_generator',
         '<(webrtc_root)/test/test.gyp:test_support',
diff --git a/video_engine/test/auto_test/vie_auto_test.gypi b/video_engine/test/auto_test/vie_auto_test.gypi
index 96291660..60290849 100644
--- a/video_engine/test/auto_test/vie_auto_test.gypi
+++ b/video_engine/test/auto_test/vie_auto_test.gypi
@@ -15,7 +15,7 @@
         '<(webrtc_root)/system_wrappers/source/system_wrappers.gyp:system_wrappers',
         '<(webrtc_root)/system_wrappers/source/system_wrappers.gyp:field_trial_default',
         '<(webrtc_root)/modules/modules.gyp:video_render_module',
-        '<(webrtc_root)/modules/modules.gyp:video_capture_module',
+        '<(webrtc_root)/modules/modules.gyp:video_capture_module_internal_impl',
         '<(webrtc_root)/voice_engine/voice_engine.gyp:voice_engine',
         '<(DEPTH)/testing/gtest.gyp:gtest',
         '<(DEPTH)/third_party/gflags/gflags.gyp:gflags',
diff --git a/video_engine/video_engine_core.gypi b/video_engine/video_engine_core.gypi
index 8ce25234..ffe63c56 100644
--- a/video_engine/video_engine_core.gypi
+++ b/video_engine/video_engine_core.gypi
@@ -122,6 +122,7 @@
           'type': '<(gtest_target_type)',
           'dependencies': [
             'video_engine_core',
+            '<(webrtc_root)/modules/modules.gyp:video_capture_module_internal_impl',
             '<(DEPTH)/testing/gtest.gyp:gtest',
             '<(DEPTH)/testing/gmock.gyp:gmock',
             '<(webrtc_root)/test/test.gyp:test_support_main',
diff --git a/webrtc_examples.gyp b/webrtc_examples.gyp
index 8d8e2277..f4e3f6f7 100644
--- a/webrtc_examples.gyp
+++ b/webrtc_examples.gyp
@@ -15,6 +15,7 @@
           'type': 'loadable_module',
           'dependencies': [
             '<(DEPTH)/third_party/icu/icu.gyp:icuuc',
+            '<(webrtc_root)/modules/modules.gyp:video_capture_module_internal_impl',
             '<(webrtc_root)/system_wrappers/source/system_wrappers.gyp:field_trial_default',
             '<(webrtc_root)/test/test.gyp:channel_transport',
             '<(webrtc_root)/video_engine/video_engine.gyp:video_engine_core',