Add support maxwidth/maxheight settings for homekit source

internal/homekit/homekit.go

@@ -134,6 +134,8 @@ func streamHandler(rawURL string) (core.Producer, error) {
 	client, err := homekit.Dial(rawURL, srtp.Server)
 	if client != nil && rawQuery != "" {
 		query := streams.ParseQuery(rawQuery)
+		client.MaxWidth = core.Atoi(query.Get("maxwidth"))
+		client.MaxHeight = core.Atoi(query.Get("maxheight"))
 		client.Bitrate = parseBitrate(query.Get("bitrate"))
 	}
 

pkg/homekit/helpers.go

@@ -67,10 +67,10 @@ func audioToMedia(codecs []camera.AudioCodecConfiguration) *core.Media {
 	return media
 }
 
-func trackToVideo(track *core.Receiver, video0 *camera.VideoCodecConfiguration) *camera.VideoCodecConfiguration {
+func trackToVideo(track *core.Receiver, video0 *camera.VideoCodecConfiguration, maxWidth, maxHeight int) *camera.VideoCodecConfiguration {
 	profileID := video0.CodecParams[0].ProfileID[0]
 	level := video0.CodecParams[0].Level[0]
-	attrs := video0.VideoAttrs[0]
+	var attrs camera.VideoCodecAttributes
 
 	if track != nil {
 		profile := h264.GetProfileLevelID(track.Codec.FmtpLine)
@@ -90,6 +90,9 @@ func trackToVideo(track *core.Receiver, video0 *camera.VideoCodecConfiguration)
 		}
 
 		for _, s := range video0.VideoAttrs {
+			if (maxWidth > 0 && int(s.Width) > maxWidth) || (maxHeight > 0 && int(s.Height) > maxHeight) {
+				continue
+			}
 			if s.Width > attrs.Width || s.Height > attrs.Height {
 				attrs = s
 			}

pkg/homekit/producer.go

@@ -29,7 +29,9 @@ type Client struct {
 
 	stream *camera.Stream
 
-	Bitrate int // in bits/s
+	MaxWidth  int
+	MaxHeight int
+	Bitrate   int // in bits/s
 }
 
 func Dial(rawURL string, server *srtp.Server) (*Client, error) {
@@ -115,7 +117,7 @@ func (c *Client) Start() error {
 	}
 
 	videoTrack := c.trackByKind(core.KindVideo)
-	videoCodec := trackToVideo(videoTrack, &c.videoConfig.Codecs[0])
+	videoCodec := trackToVideo(videoTrack, &c.videoConfig.Codecs[0], c.MaxWidth, c.MaxHeight)
 
 	audioTrack := c.trackByKind(core.KindAudio)
 	audioCodec := trackToAudio(audioTrack, &c.audioConfig.Codecs[0])