Implement VP8 encoder for chromoting

Added EncoderVp8 with test for chromoting.

TEST=remoting_unittests
BUG=50235

Review URL: http://codereview.chromium.org/3005036

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@60854 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 46 insertions, 1 deletions

diff --git a/media/base/media.h b/media/base/media.h
index 3d1a83a..fd3269e 100644
--- a/media/base/media.h
+++ b/media/base/media.h
@@ -25,6 +25,14 @@ bool InitializeMediaLibrary(const FilePath& module_dir);
 // Returns true if OpenMAX was successfully initialized and loaded.
 bool InitializeOpenMaxLibrary(const FilePath& module_dir);
 
+// This is temporary to get the address of vpx_codec_vp8_cx_algo in FFmpeg.
+// This method should only be called after media library is loaded.
+
+// TODO(hclam): Remove this after we have a getter function for the same
+// purpose in libvpx.
+// See bug: http://code.google.com/p/webm/issues/detail?id=169
+void* GetVp8CxAlgoAddress();
+
 }  // namespace media
 
 #endif  // MEDIA_BASE_MEDIA_H_
diff --git a/media/base/media_posix.cc b/media/base/media_posix.cc
index eebae5e..d5137eb 100644
--- a/media/base/media_posix.cc
+++ b/media/base/media_posix.cc
@@ -10,6 +10,7 @@
 
 #include "base/file_path.h"
 #include "base/logging.h"
+#include "base/native_library.h"
 #include "base/path_service.h"
 #include "media/ffmpeg/ffmpeg_common.h"
 #include "third_party/ffmpeg/ffmpeg_stubs.h"
@@ -69,6 +70,9 @@ std::string GetDSOName(tp_ffmpeg::StubModules stub_key) {
 
 }  // namespace
 
+// Address of vpx_codec_vp8_cx_algo.
+static void* vp8_cx_algo_address = NULL;
+
 // Attempts to initialize the media library (loading DSOs, etc.).
 // Returns true if everything was successfully initialized, false otherwise.
 bool InitializeMediaLibrary(const FilePath& module_dir) {
@@ -85,7 +89,18 @@ bool InitializeMediaLibrary(const FilePath& module_dir) {
     paths[module].push_back(path.value());
   }
 
-  return tp_ffmpeg::InitializeStubs(paths);
+  bool ret = tp_ffmpeg::InitializeStubs(paths);
+
+  // TODO(hclam): This is temporary to obtain address of
+  // vpx_codec_vp8_cx_algo. This should be removed once libvpx has a
+  // getter method for it.
+  base::NativeLibrary sumo_lib =
+      base::LoadNativeLibrary(module_dir.Append(sumo_name));
+  if (sumo_lib) {
+    vp8_cx_algo_address = base::GetFunctionPointerFromNativeLibrary(
+        sumo_lib, "vpx_codec_vp8_cx_algo");
+  }
+  return ret;
 }
 
 #if defined(OS_LINUX)
@@ -114,4 +129,8 @@ bool InitializeOpenMaxLibrary(const FilePath& module_dir) {
 }
 #endif
 
+void* GetVp8CxAlgoAddress() {
+  return vp8_cx_algo_address;
+}
+
 }  // namespace media
diff --git a/media/base/media_win.cc b/media/base/media_win.cc
index 6f9e0f8..f31ab5b 100644
--- a/media/base/media_win.cc
+++ b/media/base/media_win.cc
@@ -8,6 +8,7 @@
 
 #include "base/file_path.h"
 #include "base/logging.h"
+#include "base/native_library.h"
 #include "base/path_service.h"
 #include "base/scoped_ptr.h"
 
@@ -47,6 +48,9 @@ FilePath::CharType* GetDLLName(FFmpegDLLKeys dll_key) {
 
 }  // namespace
 
+// Address of vpx_codec_vp8_cx_algo.
+static void* vp8_cx_algo_address = NULL;
+
 // Attempts to initialize the media library (loading DLLs, DSOs, etc.).
 // Returns true if everything was successfully initialized, false otherwise.
 bool InitializeMediaLibrary(const FilePath& base_path) {
@@ -78,6 +82,16 @@ bool InitializeMediaLibrary(const FilePath& base_path) {
 #endif
   }
 
+  // TODO(hclam): This is temporary to obtain address of
+  // vpx_codec_vp8_cx_algo. This should be removed once libvpx has a
+  // getter method for it.
+  base::NativeLibrary avcodec_lib =
+      base::LoadNativeLibrary(FilePath(GetDLLName(media::FILE_LIBAVCODEC)));
+  if (avcodec_lib) {
+    vp8_cx_algo_address = base::GetFunctionPointerFromNativeLibrary(
+        avcodec_lib, "vpx_codec_vp8_cx_algo");
+  }
+
   // Check that we loaded all libraries successfully.  We only need to check the
   // last array element because the loop above will break without initializing
   // it on any prior error.
@@ -97,4 +111,8 @@ bool InitializeOpenMaxLibrary(const FilePath& module_dir) {
   return false;
 }
 
+void* GetVp8CxAlgoAddress() {
+  return vp8_cx_algo_address;
+}
+
 }  // namespace media