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 | |
Jacob Erlbeck | 8b66649 | 2013-12-13 13:18:19 +0100 | [diff] [blame] | 45 | RTPReplay class >> on: aFile fromPort: aPort [ |
| 46 | ^ self new |
| 47 | initialize: aPort; |
| 48 | file: aFile; yourself |
| 49 | ] |
| 50 | |
Holger Hans Peter Freyther | f42e908 | 2012-08-05 16:10:32 +0200 | [diff] [blame] | 51 | initialize [ |
Jacob Erlbeck | 8b66649 | 2013-12-13 13:18:19 +0100 | [diff] [blame] | 52 | self initialize: 0. |
| 53 | ] |
| 54 | |
| 55 | initialize: aPort [ |
| 56 | socket := Sockets.DatagramSocket local: '0.0.0.0' port: aPort. |
Holger Hans Peter Freyther | f42e908 | 2012-08-05 16:10:32 +0200 | [diff] [blame] | 57 | ] |
| 58 | |
Holger Hans Peter Freyther | 602559f | 2012-08-05 09:27:20 +0200 | [diff] [blame] | 59 | file: aFile [ |
| 60 | filename := aFile |
| 61 | ] |
| 62 | |
Holger Hans Peter Freyther | f42e908 | 2012-08-05 16:10:32 +0200 | [diff] [blame] | 63 | localPort [ |
| 64 | ^ socket port |
| 65 | ] |
| 66 | |
Holger Hans Peter Freyther | 602559f | 2012-08-05 09:27:20 +0200 | [diff] [blame] | 67 | streamAudio: aHost port: aPort [ |
Holger Hans Peter Freyther | f42e908 | 2012-08-05 16:10:32 +0200 | [diff] [blame] | 68 | | file last_time last_image udp_send dest | |
Holger Hans Peter Freyther | 602559f | 2012-08-05 09:27:20 +0200 | [diff] [blame] | 69 | |
| 70 | last_time := nil. |
| 71 | last_image := nil. |
Jacob Erlbeck | 8b66649 | 2013-12-13 13:18:19 +0100 | [diff] [blame] | 72 | file := FileStream open: filename mode: #read. |
Holger Hans Peter Freyther | 602559f | 2012-08-05 09:27:20 +0200 | [diff] [blame] | 73 | |
| 74 | "Send the payload" |
| 75 | dest := Sockets.SocketAddress byName: aHost. |
Holger Hans Peter Freyther | 602559f | 2012-08-05 09:27:20 +0200 | [diff] [blame] | 76 | udp_send := [:payload | | datagram | |
| 77 | datagram := Sockets.Datagram data: payload contents address: dest port: aPort. |
| 78 | socket nextPut: datagram |
| 79 | ]. |
| 80 | |
| 81 | [file atEnd] whileFalse: [ |
| 82 | | lineStream time data now_image | |
| 83 | lineStream := file nextLine readStream. |
| 84 | |
| 85 | "Read the time, skip the blank, parse the data" |
| 86 | time := Number readFrom: lineStream. |
| 87 | lineStream skip: 1. |
| 88 | |
| 89 | data := WriteStream on: (ByteArray new: 30). |
| 90 | [lineStream atEnd] whileFalse: [ |
| 91 | | hex | |
| 92 | hex := lineStream next: 2. |
| 93 | data nextPut: (Number readFrom: hex readStream radix: 16). |
| 94 | ]. |
| 95 | |
| 96 | last_time isNil |
| 97 | ifTrue: [ |
| 98 | "First time, send it right now" |
| 99 | last_time := time. |
| 100 | last_image := Time millisecondClockValue. |
| 101 | udp_send value: data. |
| 102 | ] |
| 103 | ifFalse: [ |
| 104 | | wait_image new_image_time | |
| 105 | |
| 106 | "How long to wait?" |
| 107 | wait_image := last_image + ((time - last_time) * 1000). |
Holger Hans Peter Freyther | f42e908 | 2012-08-05 16:10:32 +0200 | [diff] [blame] | 108 | [ wait_image > Time millisecondClockValue ] |
| 109 | whileTrue: [Processor yield]. |
Holger Hans Peter Freyther | 602559f | 2012-08-05 09:27:20 +0200 | [diff] [blame] | 110 | |
| 111 | udp_send value: data. |
| 112 | last_time := time. |
| 113 | last_image := wait_image. |
| 114 | ] |
| 115 | ] |
| 116 | ] |
| 117 | ] |
| 118 | |