Add MimeUtil::Parse{Audio|Video}CodecString

media/base/mime_util.h

Index: media/base/mime_util.h
diff --git a/media/base/mime_util.h b/media/base/mime_util.h
index d7a39f41a959dc2045d2addab12cbb2045b53be2..0ff67036d80d8837fd5d966adc10345f009505b6 100644
--- a/media/base/mime_util.h
+++ b/media/base/mime_util.h
@@ -8,7 +8,9 @@
 #include <string>
 #include <vector>
 
+#include "media/base/audio_codecs.h"
 #include "media/base/media_export.h"
+#include "media/base/video_codecs.h"
 
 namespace media {
 
@@ -25,6 +27,31 @@ MEDIA_EXPORT void SplitCodecsToVector(const std::string& codecs,
                                       std::vector<std::string>* codecs_out,
                                       bool strip);
 
+// Returns true if successfully parsed the given |mime_type| and |codec_id|,
+// setting |out_*| arguments to the parsed video codec, profile, and level.
+// |out_is_ambiguous| will be true when the codec string is incomplete such that
+// some guessing was required to decide the codec, profile, or level.
+// Returns false if parsing fails (invalid string, or unrecognized video codec),
+// in which case values for |out_*| arguments are undefined.
+MEDIA_EXPORT bool ParseVideoCodecString(const std::string& mime_type,
+                                        const std::string& codec_id,
+                                        bool* out_is_ambiguous,
+                                        VideoCodec* out_codec,
+                                        VideoCodecProfile* out_profile,
+                                        uint8_t* out_level,
+                                        VideoColorSpace* out_colorspace);
+
+// Returns true if successfully parsed the given |mime_type| and |codec_id|,
+// setting |out_audio_codec| to found codec. |out_is_ambiguous| will be true
+// when the codec string is incomplete such that some guessing was required to
+// decide the codec.
+// Returns false if parsing fails (invalid string, or unrecognized audio codec),
+// in which case values for |out_*| arguments are undefined.
+MEDIA_EXPORT bool ParseAudioCodecString(const std::string& mime_type,
+                                        const std::string& codec_id,
+                                        bool* out_is_ambiguous,
+                                        AudioCodec* out_codec);
+
 // Indicates that the MIME type and (possible codec string) are supported.
 enum SupportsType {
   // The given MIME type and codec combination is not supported.