private static String buildTrackName(MediaFormat format) {
if (format.adaptive) {
return "auto";
}
String trackName;
if (MimeTypes.isVideo(format.mimeType)) {
trackName =
joinWithSeparator(
joinWithSeparator(buildResolutionString(format), buildBitrateString(format)),
buildTrackIdString(format));
} else if (MimeTypes.isAudio(format.mimeType)) {
trackName =
joinWithSeparator(
joinWithSeparator(
joinWithSeparator(buildLanguageString(format), buildAudioPropertyString(format)),
buildBitrateString(format)),
buildTrackIdString(format));
} else {
trackName =
joinWithSeparator(
joinWithSeparator(buildLanguageString(format), buildBitrateString(format)),
buildTrackIdString(format));
}
return trackName.length() == 0 ? "unknown" : trackName;
}
