Bug 1407919 - Part6 - Check bit depth in WebMDecoder to determine if we support HDR. r=gerald

MozReview-Commit-ID: Jq569mlINNh

--HG--
extra : rebase_source : 57a352d9e621fc9a204f8865784332ec9aab96a5

dom/media/webm/WebMDecoder.cpp

@@ -10,6 +10,7 @@
 #include "AOMDecoder.h"
 #endif
 #include "MediaContainerType.h"
+#include "PDMFactory.h"
 #include "VideoUtils.h"
 
 namespace mozilla {
@@ -41,9 +42,30 @@ WebMDecoder::IsSupportedType(const MediaContainerType& aContainerType)
     // Note: Only accept VP8/VP9 in a video container type, not in an audio
     // container type.
 
-    if (isVideo &&
-        (IsVP8CodecString(codec) || IsVP9CodecString(codec))) {
-      continue;
+    if (isVideo) {
+      UniquePtr<TrackInfo> trackInfo;
+      if (IsVP9CodecString(codec))  {
+        trackInfo = CreateTrackInfoWithMIMETypeAndContainerTypeExtraParameters(
+          NS_LITERAL_CSTRING("video/vp9"), aContainerType);
+      } else if (IsVP8CodecString(codec)) {
+        trackInfo = CreateTrackInfoWithMIMETypeAndContainerTypeExtraParameters(
+          NS_LITERAL_CSTRING("video/vp8"), aContainerType);
+      }
+      // If it is vp8 or vp9, check the bit depth.
+      if (trackInfo) {
+        uint8_t profile = 0;
+        uint8_t level = 0;
+        uint8_t bitDepth = 0;
+        if (ExtractVPXCodecDetails(codec, profile, level, bitDepth)) {
+          trackInfo->GetAsVideoInfo()->mBitDepth = bitDepth;
+        }
+        // Verify that we have a PDM that supports this bit depth.
+        RefPtr<PDMFactory> platform = new PDMFactory();
+        if (!platform->Supports(*trackInfo, nullptr)) {
+          return false;
+        }
+        continue;
+      }
     }
 #ifdef MOZ_AV1
     if (isVideo && AOMDecoder::IsSupportedCodec(codec)) {