0.2.42 - DTS surround sound support

server/internal/api/playback.go

@@ -481,6 +481,8 @@ func sessionPlaybackCapabilities(sess store.Session) emby.PlaybackCapabilities {
 			capabilities.HEVCHDR10Plus = true
 		case "video_hevc_dolby_vision":
 			capabilities.HEVCDolbyVision = true
+		case "audio_passthrough_v1":
+			capabilities.AudioProfileV1 = true
 		default:
 			parsePlaybackCapabilityValue(value, &capabilities)
 		}
@@ -508,6 +510,9 @@ func (s *Server) effectivePlaybackCapabilities(
 }
 
 func parsePlaybackCapabilityValue(value string, capabilities *emby.PlaybackCapabilities) {
+	if parseAudioCapability(value, capabilities) {
+		return
+	}
 	parseIntCapability(value, "video_h264_level_", &capabilities.H264Level)
 	parseIntCapability(value, "video_h264_high10_level_", &capabilities.H264High10Level)
 	parseIntCapability(value, "video_hevc_main_level_", &capabilities.HEVCMainLevel)
@@ -520,6 +525,51 @@ func parsePlaybackCapabilityValue(value string, capabilities *emby.PlaybackCapab
 	)
 }
 
+func parseAudioCapability(value string, capabilities *emby.PlaybackCapabilities) bool {
+	const prefix = "audio_"
+	if !strings.HasPrefix(value, prefix) {
+		return false
+	}
+	if strings.HasPrefix(value, "audio_max_channels_") {
+		parsed, err := strconv.Atoi(strings.TrimPrefix(value, "audio_max_channels_"))
+		if err == nil && parsed >= 2 && parsed <= 8 {
+			capabilities.AudioMaxChannels = parsed
+		}
+		return true
+	}
+	for _, suffix := range []string{"_passthrough", "_decode"} {
+		if !strings.HasSuffix(value, suffix) {
+			continue
+		}
+		codec := strings.TrimSuffix(strings.TrimPrefix(value, prefix), suffix)
+		if !validAudioCapabilityCodec(codec) {
+			return true
+		}
+		if suffix == "_passthrough" {
+			if capabilities.AudioPassthrough == nil {
+				capabilities.AudioPassthrough = map[string]bool{}
+			}
+			capabilities.AudioPassthrough[codec] = true
+		} else {
+			if capabilities.AudioDecode == nil {
+				capabilities.AudioDecode = map[string]bool{}
+			}
+			capabilities.AudioDecode[codec] = true
+		}
+		return true
+	}
+	return true
+}
+
+func validAudioCapabilityCodec(codec string) bool {
+	switch codec {
+	case "ac3", "eac3", "atmos", "dts", "dts_hd", "truehd":
+		return true
+	default:
+		return false
+	}
+}
+
 func parseIntCapability(value, prefix string, destination *int) {
 	if !strings.HasPrefix(value, prefix) {
 		return