Add 'decklink' channel

Author: hmelder

Daemons/vmpserverd/profiles/com.hugomelder.software.plist

@@ -65,6 +65,8 @@
         <dict>
             <key>v4l2</key>
             <string>v4l2src device={V4L2DEV} ! videoconvertscale add-borders=1 ! video/x-raw, width=1920, height=1080 ! queue ! intervideosink channel={VIDEOCHANNEL.0}</string>
+            <key>decklink</key>
+            <string>decklinksrc device-number={DEV} ! videoconvert ! videoscale ! videorate ! video/x-raw, width=1920, height=1080 ! intervideosink channel={VIDEOCHANNEL.0}</string>
             <key>videoTest</key>
             <string>videotestsrc is-live=1 ! video/x-raw,width={WIDTH},height={HEIGHT},format=NV12 !
  intervideosink channel={VIDEOCHANNEL.0}</string>

Daemons/vmpserverd/profiles/com.hugomelder.vaapi.plist

@@ -97,6 +97,8 @@
                 communication in the same process.
             -->
             <string>v4l2src device={V4L2DEV} ! videoconvertscale add-borders=1 ! video/x-raw, width=1920, height=1080 ! intervideosink channel={VIDEOCHANNEL.0}</string>
+            <key>decklink</key>
+            <string>decklinksrc device-number={DEV} ! videoconvert ! videoscale ! videorate ! video/x-raw, width=1920, height=1080 ! intervideosink channel={VIDEOCHANNEL.0}</string>
             <key>videoTest</key>
             <string>videotestsrc is-live=1 ! video/x-raw,width={WIDTH},height={HEIGHT},format=NV12 ! intervideosink channel={VIDEOCHANNEL.0}</string>
         </dict>

Daemons/vmpserverd/src/VMPRTSPServer.m

@@ -360,6 +360,19 @@ - (BOOL)_startChannelPipelinesWithError:(NSError **)error {
 				@"WIDTH" : [width stringValue],
 				@"HEIGHT" : [height stringValue]
 			};
+		} else if ([type isEqualToString:VMPConfigChannelTypeDecklink]) {
+			VMPInfo(@"Starting channel %@ of type %@", name, type);
+			NSNumber *device = properties[@"deviceNumber"];
+			if (!device) {
+				CONFIG_ERROR(error, @"decklink channel is missing 'deviceNumber' property")
+				return NO;
+			}
+
+			// Substitution dictionary for pipeline template
+			vars = @{
+				@"VIDEOCHANNEL.0" : name,
+				@"DEV" : [device stringValue],
+			};
 		}
 
 		// Skip pipeline creation if type is unknown

Daemons/vmpserverd/src/models/VMPConfigChannelModel.h

@@ -10,6 +10,8 @@
 
 /// Channel for capturing V4L2 devices
 extern NSString *const VMPConfigChannelTypeV4L2;
+/// Channel for capturing from Decklinks
+extern NSString *const VMPConfigChannelTypeDecklink;
 /// Channel for creating a reproducible video test pattern
 extern NSString *const VMPConfigChannelTypeVideoTest;
 /// Channel for creating a reproducible audio test tone

Daemons/vmpserverd/src/models/VMPConfigChannelModel.m

@@ -10,6 +10,7 @@
 #import "VMPModelCommon.h"
 
 NSString *const VMPConfigChannelTypeV4L2 = @"v4l2";
+NSString *const VMPConfigChannelTypeDecklink = @"decklink";
 NSString *const VMPConfigChannelTypeVideoTest = @"videoTest";
 NSString *const VMPConfigChannelTypeAudioTest = @"audioTest";
 NSString *const VMPConfigChannelTypePulseAudio = @"pulse";