Introduce Dolby Vision video codec and Demuxer support

media/base/video_codecs.h

Index: media/base/video_codecs.h
diff --git a/media/base/video_codecs.h b/media/base/video_codecs.h
index 0937422aadbf4863210b31a76b967035b1d40c90..40b05c6d99c42f87744ce6e017c5af70b6bc7b93 100644
--- a/media/base/video_codecs.h
+++ b/media/base/video_codecs.h
@@ -25,12 +25,13 @@ enum VideoCodec {
   kCodecVP8,
   kCodecVP9,
   kCodecHEVC,
+  kCodecDolbyVision,
   // DO NOT ADD RANDOM VIDEO CODECS!
   //
   // The only acceptable time to add a new codec is if there is production code
   // that uses said codec in the same CL.
 
-  kVideoCodecMax = kCodecHEVC  // Must equal the last "real" codec above.
+  kVideoCodecMax = kCodecDolbyVision  // Must equal the last "real" codec above.
 };
 
 // Video codec profiles. Keep in sync with mojo::VideoCodecProfile (see
@@ -71,8 +72,13 @@ enum VideoCodecProfile {
   HEVCPROFILE_MAIN = HEVCPROFILE_MIN,
   HEVCPROFILE_MAIN10 = 17,
   HEVCPROFILE_MAIN_STILL_PICTURE = 18,
-  HEVCPROFILE_MAX = HEVCPROFILE_MAIN_STILL_PICTURE,
-  VIDEO_CODEC_PROFILE_MAX = HEVCPROFILE_MAX,
+  DOLBYVISION_MIN = 19,
+  DOLBYVISION_PROFILE0 = DOLBYVISION_MIN,
+  DOLBYVISION_PROFILE4 = 20,
+  DOLBYVISION_PROFILE5 = 21,

[wolenetz, 2017/01/25 23:42:41]

To be clear, this enumeration's lack of inclusion of DV profiles 1,2,3,6 and
usage of MIN/MAX to bound the range of the DV portion of the enum makes it
difficult to see how profiles 1,2,3,6 might ever be added. Is their omission now
(and in the foreseeable future) intentional?

[erickung1, 2017/02/03 18:18:31]

this is intentional since profile 1 2 3 and 6 are deprecated by Dolby

+  DOLBYVISION_PROFILE7 = 22,
+  DOLBYVISION_MAX = DOLBYVISION_PROFILE7,
+  VIDEO_CODEC_PROFILE_MAX = DOLBYVISION_MAX,
 };
 
 std::string MEDIA_EXPORT GetCodecName(VideoCodec codec);
@@ -102,6 +108,12 @@ MEDIA_EXPORT bool ParseHEVCCodecId(const std::string& codec_id,
                                    uint8_t* level_idc);
 #endif
 
+#if BUILDFLAG(ENABLE_DOLBY_VISION_DEMUXING)
+MEDIA_EXPORT bool ParseDolbyVisionCodecId(const std::string& codec_id,
+                                          VideoCodecProfile* profile,
+                                          uint8_t* level_id);
+#endif
+
 MEDIA_EXPORT VideoCodec StringToVideoCodec(const std::string& codec_id);
 
 }  // namespace media