AndroidVideoEncodeAccelerator is born!

AVEA is the encode-side analogue of AndroidVideoDecodeAccelerator, or the
Android analogue of ExynosVideoEncodeAccelerator, depending on your POV.
Also included in this CL:
- MediaCodecBridge learns how to be an encoder, too.
- MediaCodecBridge::Start is sunk into Create since they were always called
  together.
- android.os.Log() is given an exception parameter instead of concatenating its
  .toString() (and losing its stacktrace!)
- MediaCodecBridge exposes its buffers to reduce unnecessary memcpy'ing

Performance impact: isolating encode performance by making Android decode only
240p and no audio send/receive with the following URLs:
z620/gprecise: https://apprtc.appspot.com/?video=maxHeight=240&audio=false&r=<ROOM>
Nexus5: https://apprtc.appspot.com/?video=minHeight=720,maxHeight=720,minWidth=1280,maxWidth=1280&audio=false&r=<ROOM>
All 4 cores are max'd are running at top speed (ondemand governor ramps them up
on its own with this workload).
SW encode: CPU utilization 80% and desktop receives 0.1-0.5FPS (jankily).
HW encode: CPU utilization 60-70% and desktop receives 30FPS reliably.

Comparing an easier workload of encoding 360p:
z620/gprecise: https://apprtc.appspot.com/?video=maxHeight=240&audio=false&r=<ROOM>
Nexus5: https://apprtc.appspot.com/?video=minHeight=360,maxHeight=360,minWidth=640,maxWidth=640&audio=false&r=<ROOM>
Set all 4 cores to "performance" governor for stable comparison.
SW encode: CPU utilization 63% and desktop receives 30FPS reliably.
HW encode: CPU utilization 53% and desktop receives 30FPS reliably.

BUG=313115

Review URL: https://codereview.chromium.org/74563002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@238658 0039d316-1c4b-4281-b951-d872f2087c98

4 files changed, 17 insertions, 0 deletions

diff --git a/gpu/config/gpu_blacklist.cc b/gpu/config/gpu_blacklist.cc
index 39946b0..92c5207 100644
--- a/gpu/config/gpu_blacklist.cc
+++ b/gpu/config/gpu_blacklist.cc
@@ -36,6 +36,8 @@ GpuBlacklist* GpuBlacklist::Create() {
                             GPU_FEATURE_TYPE_TEXTURE_SHARING);
   list->AddSupportedFeature("accelerated_video_decode",
                             GPU_FEATURE_TYPE_ACCELERATED_VIDEO_DECODE);
+  list->AddSupportedFeature("accelerated_video_encode",
+                            GPU_FEATURE_TYPE_ACCELERATED_VIDEO_ENCODE);
   list->AddSupportedFeature("3d_css",
                             GPU_FEATURE_TYPE_3D_CSS);
   list->AddSupportedFeature("accelerated_video",
diff --git a/gpu/config/gpu_blacklist_unittest.cc b/gpu/config/gpu_blacklist_unittest.cc
index b1ed333..af381e0 100644
--- a/gpu/config/gpu_blacklist_unittest.cc
+++ b/gpu/config/gpu_blacklist_unittest.cc
@@ -123,6 +123,10 @@ GPU_BLACKLIST_FEATURE_TEST(AcceleratedVideoDecode,
                            "accelerated_video_decode",
                            GPU_FEATURE_TYPE_ACCELERATED_VIDEO_DECODE)
 
+GPU_BLACKLIST_FEATURE_TEST(AcceleratedVideoEncode,
+                           "accelerated_video_encode",
+                           GPU_FEATURE_TYPE_ACCELERATED_VIDEO_ENCODE)
+
 GPU_BLACKLIST_FEATURE_TEST(Css3D,
                            "3d_css",
                            GPU_FEATURE_TYPE_3D_CSS)
diff --git a/gpu/config/gpu_feature_type.h b/gpu/config/gpu_feature_type.h
index b082d78..e0e4df4 100644
--- a/gpu/config/gpu_feature_type.h
+++ b/gpu/config/gpu_feature_type.h
@@ -19,6 +19,7 @@ enum GpuFeatureType {
   GPU_FEATURE_TYPE_FLASH_STAGE3D,
   GPU_FEATURE_TYPE_TEXTURE_SHARING,
   GPU_FEATURE_TYPE_ACCELERATED_VIDEO_DECODE,
+  GPU_FEATURE_TYPE_ACCELERATED_VIDEO_ENCODE,
   GPU_FEATURE_TYPE_3D_CSS,
   GPU_FEATURE_TYPE_ACCELERATED_VIDEO,
   GPU_FEATURE_TYPE_PANEL_FITTING,
diff --git a/gpu/config/software_rendering_list_json.cc b/gpu/config/software_rendering_list_json.cc
index 6ed261f..d686d84 100644
--- a/gpu/config/software_rendering_list_json.cc
+++ b/gpu/config/software_rendering_list_json.cc
@@ -971,6 +971,16 @@ LONG_STRING_CONST(
       "features": [
         "force_compositing_mode"
       ]
+    },
+    {
+      "id": 82,
+      "description": "MediaCodec is still too buggy to use for encoding (b/11536167).",
+      "os": {
+        "type": "android"
+      },
+      "features": [
+        "accelerated_video_encode"
+      ]
     }
   ]
 }