Holger Hans Peter Freyther | 602559f | 2012-08-05 09:27:20 +0200 | [diff] [blame^] | 1 | " |
| 2 | Simple UDP replay from the state files |
| 3 | " |
| 4 | |
| 5 | PackageLoader fileInPackage: #Sockets. |
| 6 | |
| 7 | Object subclass: RTPReplay [ |
| 8 | | filename | |
| 9 | RTPReplay class >> on: aFile [ |
| 10 | ^ self new |
| 11 | file: aFile; yourself |
| 12 | ] |
| 13 | |
| 14 | file: aFile [ |
| 15 | filename := aFile |
| 16 | ] |
| 17 | |
| 18 | streamAudio: aHost port: aPort [ |
| 19 | | file last_time last_image udp_send socket dest | |
| 20 | |
| 21 | last_time := nil. |
| 22 | last_image := nil. |
| 23 | file := FileStream open: filename. |
| 24 | |
| 25 | "Send the payload" |
| 26 | dest := Sockets.SocketAddress byName: aHost. |
| 27 | socket := Sockets.DatagramSocket new. |
| 28 | udp_send := [:payload | | datagram | |
| 29 | datagram := Sockets.Datagram data: payload contents address: dest port: aPort. |
| 30 | socket nextPut: datagram |
| 31 | ]. |
| 32 | |
| 33 | [file atEnd] whileFalse: [ |
| 34 | | lineStream time data now_image | |
| 35 | lineStream := file nextLine readStream. |
| 36 | |
| 37 | "Read the time, skip the blank, parse the data" |
| 38 | time := Number readFrom: lineStream. |
| 39 | lineStream skip: 1. |
| 40 | |
| 41 | data := WriteStream on: (ByteArray new: 30). |
| 42 | [lineStream atEnd] whileFalse: [ |
| 43 | | hex | |
| 44 | hex := lineStream next: 2. |
| 45 | data nextPut: (Number readFrom: hex readStream radix: 16). |
| 46 | ]. |
| 47 | |
| 48 | last_time isNil |
| 49 | ifTrue: [ |
| 50 | "First time, send it right now" |
| 51 | last_time := time. |
| 52 | last_image := Time millisecondClockValue. |
| 53 | udp_send value: data. |
| 54 | ] |
| 55 | ifFalse: [ |
| 56 | | wait_image new_image_time | |
| 57 | |
| 58 | "How long to wait?" |
| 59 | wait_image := last_image + ((time - last_time) * 1000). |
| 60 | [ wait_image > Time millisecondClockValue ] whileTrue: []. |
| 61 | |
| 62 | udp_send value: data. |
| 63 | last_time := time. |
| 64 | last_image := wait_image. |
| 65 | ] |
| 66 | ] |
| 67 | ] |
| 68 | ] |
| 69 | |