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 | |
Holger Hans Peter Freyther | f42e908 | 2012-08-05 16:10:32 +0200 | [diff] [blame] | 7 | Object subclass: SDPUtils [ |
| 8 | "Look into using PetitParser." |
| 9 | SDPUtils class >> findPort: aSDP [ |
| 10 | aSDP linesDo: [:line | |
| 11 | (line startsWith: 'm=audio ') ifTrue: [ |
| 12 | | stream | |
| 13 | stream := line readStream |
| 14 | skip: 'm=audio ' size; |
| 15 | yourself. |
| 16 | ^ Number readFrom: stream. |
| 17 | ] |
| 18 | ]. |
| 19 | |
| 20 | ^ self error: 'Not found'. |
| 21 | ] |
| 22 | |
| 23 | SDPUtils class >> findHost: aSDP [ |
| 24 | aSDP linesDo: [:line | |
| 25 | (line startsWith: 'c=IN IP4 ') ifTrue: [ |
| 26 | | stream | |
| 27 | ^ stream := line readStream |
| 28 | skip: 'c=IN IP4 ' size; |
| 29 | upToEnd. |
| 30 | ] |
| 31 | ]. |
| 32 | |
| 33 | ^ self error: 'Not found'. |
| 34 | ] |
| 35 | ] |
| 36 | |
Holger Hans Peter Freyther | 602559f | 2012-08-05 09:27:20 +0200 | [diff] [blame] | 37 | Object subclass: RTPReplay [ |
Holger Hans Peter Freyther | f42e908 | 2012-08-05 16:10:32 +0200 | [diff] [blame] | 38 | | filename socket | |
Holger Hans Peter Freyther | 602559f | 2012-08-05 09:27:20 +0200 | [diff] [blame] | 39 | RTPReplay class >> on: aFile [ |
| 40 | ^ self new |
Holger Hans Peter Freyther | f42e908 | 2012-08-05 16:10:32 +0200 | [diff] [blame] | 41 | initialize; |
Holger Hans Peter Freyther | 602559f | 2012-08-05 09:27:20 +0200 | [diff] [blame] | 42 | file: aFile; yourself |
| 43 | ] |
| 44 | |
Holger Hans Peter Freyther | f42e908 | 2012-08-05 16:10:32 +0200 | [diff] [blame] | 45 | initialize [ |
| 46 | socket := Sockets.DatagramSocket new. |
| 47 | ] |
| 48 | |
Holger Hans Peter Freyther | 602559f | 2012-08-05 09:27:20 +0200 | [diff] [blame] | 49 | file: aFile [ |
| 50 | filename := aFile |
| 51 | ] |
| 52 | |
Holger Hans Peter Freyther | f42e908 | 2012-08-05 16:10:32 +0200 | [diff] [blame] | 53 | localPort [ |
| 54 | ^ socket port |
| 55 | ] |
| 56 | |
Holger Hans Peter Freyther | 602559f | 2012-08-05 09:27:20 +0200 | [diff] [blame] | 57 | streamAudio: aHost port: aPort [ |
Holger Hans Peter Freyther | f42e908 | 2012-08-05 16:10:32 +0200 | [diff] [blame] | 58 | | file last_time last_image udp_send dest | |
Holger Hans Peter Freyther | 602559f | 2012-08-05 09:27:20 +0200 | [diff] [blame] | 59 | |
| 60 | last_time := nil. |
| 61 | last_image := nil. |
| 62 | file := FileStream open: filename. |
| 63 | |
| 64 | "Send the payload" |
| 65 | dest := Sockets.SocketAddress byName: aHost. |
Holger Hans Peter Freyther | 602559f | 2012-08-05 09:27:20 +0200 | [diff] [blame] | 66 | udp_send := [:payload | | datagram | |
| 67 | datagram := Sockets.Datagram data: payload contents address: dest port: aPort. |
| 68 | socket nextPut: datagram |
| 69 | ]. |
| 70 | |
| 71 | [file atEnd] whileFalse: [ |
| 72 | | lineStream time data now_image | |
| 73 | lineStream := file nextLine readStream. |
| 74 | |
| 75 | "Read the time, skip the blank, parse the data" |
| 76 | time := Number readFrom: lineStream. |
| 77 | lineStream skip: 1. |
| 78 | |
| 79 | data := WriteStream on: (ByteArray new: 30). |
| 80 | [lineStream atEnd] whileFalse: [ |
| 81 | | hex | |
| 82 | hex := lineStream next: 2. |
| 83 | data nextPut: (Number readFrom: hex readStream radix: 16). |
| 84 | ]. |
| 85 | |
| 86 | last_time isNil |
| 87 | ifTrue: [ |
| 88 | "First time, send it right now" |
| 89 | last_time := time. |
| 90 | last_image := Time millisecondClockValue. |
| 91 | udp_send value: data. |
| 92 | ] |
| 93 | ifFalse: [ |
| 94 | | wait_image new_image_time | |
| 95 | |
| 96 | "How long to wait?" |
| 97 | wait_image := last_image + ((time - last_time) * 1000). |
Holger Hans Peter Freyther | f42e908 | 2012-08-05 16:10:32 +0200 | [diff] [blame] | 98 | [ wait_image > Time millisecondClockValue ] |
| 99 | whileTrue: [Processor yield]. |
Holger Hans Peter Freyther | 602559f | 2012-08-05 09:27:20 +0200 | [diff] [blame] | 100 | |
| 101 | udp_send value: data. |
| 102 | last_time := time. |
| 103 | last_image := wait_image. |
| 104 | ] |
| 105 | ] |
| 106 | ] |
| 107 | ] |
| 108 | |