Parse VPCodecConfiguration and extract VP9 profile

media/formats/mp4/box_definitions.cc

Index: media/formats/mp4/box_definitions.cc
diff --git a/media/formats/mp4/box_definitions.cc b/media/formats/mp4/box_definitions.cc
index 82a94709f73f5572dd0f2dc6b52fe5c41080b9fb..f8d5a3edd8e5142fa1e84b5f08dac002857ae40b 100644
--- a/media/formats/mp4/box_definitions.cc
+++ b/media/formats/mp4/box_definitions.cc
@@ -565,6 +565,44 @@ bool AVCDecoderConfigurationRecord::ParseInternal(
   return true;
 }
 
+VPCodecConfigurationRecord::VPCodecConfigurationRecord()
+    : profile(VIDEO_CODEC_PROFILE_UNKNOWN) {}
+
+VPCodecConfigurationRecord::VPCodecConfigurationRecord(
+    const VPCodecConfigurationRecord& other) = default;
+
+VPCodecConfigurationRecord::~VPCodecConfigurationRecord() {}
+
+FourCC VPCodecConfigurationRecord::BoxType() const {
+  return FOURCC_VPCC;
+}
+
+bool VPCodecConfigurationRecord::Parse(BoxReader* reader) {
+  uint8_t profile_indication = 0;
+  RCHECK(reader->ReadFullBoxHeader() && reader->Read1(&profile_indication));
+  // The remaining fields are not parsed as we don't care about them for now.
+
+  switch (profile_indication) {
+    case 0:
+      profile = VP9PROFILE_PROFILE0;
+      break;
+    case 1:
+      profile = VP9PROFILE_PROFILE1;
+      break;
+    case 2:
+      profile = VP9PROFILE_PROFILE2;
+      break;
+    case 3:
+      profile = VP9PROFILE_PROFILE3;
+      break;
+    default:
+      MEDIA_LOG(ERROR, reader->media_log()) << "Unsupported VP9 profile: "
+                                            << profile_indication;
+      return false;
+  }
+  return true;
+}
+
 PixelAspectRatioBox::PixelAspectRatioBox() : h_spacing(1), v_spacing(1) {}
 PixelAspectRatioBox::PixelAspectRatioBox(const PixelAspectRatioBox& other) =
     default;
@@ -646,12 +684,16 @@ bool VideoSampleEntry::Parse(BoxReader* reader) {
     }
 #endif
 #if BUILDFLAG(ENABLE_MP4_VP9_DEMUXING)
-    case FOURCC_VP09:
-      frame_bitstream_converter = NULL;
+    case FOURCC_VP09: {
+      DVLOG(2) << __FUNCTION__ << " parsing VPCodecConfigurationRecord (vpcC)";
+      std::unique_ptr<VPCodecConfigurationRecord> vp_config(
+          new VPCodecConfigurationRecord());
+      RCHECK(reader->ReadChild(vp_config.get()));
+      frame_bitstream_converter = nullptr;
       video_codec = kCodecVP9;
-      // TODO(kqyang): Read VPCodecConfiguration and extract profile
-      // (crbug.com/604863).
+      video_codec_profile = vp_config->profile;
       break;
+    }
 #endif
     default:
       // Unknown/unsupported format