| { |
| "$schema": "http://json-schema.org/draft-07/schema#", |
| "$id": "https://something/streaming_schema.json", |
| "definitions": { |
| "ssrc": {"type": "integer", "minimum": 0, "maximum": 4294967295}, |
| "delay": {"type": "integer", "minimum": 1, "maximum": 4000}, |
| "resolution": { |
| "width": {"type": "integer", "minimum": 320}, |
| "height": {"type": "integer", "minimum": 240} |
| }, |
| "frame_rate": { |
| "type": "string", |
| "pattern": "[0-9]+(/[0-9]+)?", |
| "examples": ["30", "30000/1001"] |
| }, |
| "dimensions": { |
| "allOf": [ |
| {"$ref": "#/definitions/resolution"}, |
| {"properties": {"frameRate": {"$ref": "#/definitions/frame_rate"}}} |
| ] |
| }, |
| "rtp_extensions": { |
| "type": "array", |
| "items": {"type": "string", "enum": ["adaptive_playout_delay"]} |
| }, |
| "stream": { |
| "properties": { |
| "index": {"type": "integer", "minimum": 0}, |
| "type": {"type": "string", "enum": ["audio_source", "video_source"]}, |
| "codecName": {"type": "string"}, |
| "rtpProfile": {"type": "string", "enum": ["cast"]}, |
| "rtpPayloadType": {"type": "integer", "minimum": 96, "maximum": 127}, |
| "ssrc": {"$ref": "#/definitions/ssrc"}, |
| "targetDelay": {"$ref": "#/definitions/delay"}, |
| "aesKey": {"type": "string", "pattern": "[0-9a-fA-F]{32}"}, |
| "aesIvMask": {"type": "string", "pattern": "[0-9a-fA-F]{32}"}, |
| "receiverRtcpEventLog": {"type": "boolean"}, |
| "receiverRtcpDscp": {"type": "integer", "minimum": 0, "default": 46}, |
| "rtpExtensions": {"$ref": "#/definitions/rtp_extensions"}, |
| "timeBase": { |
| "type": "string", |
| "pattern": "1/[0-9]+", |
| "default": "1/90000" |
| } |
| }, |
| "required": [ |
| "index", |
| "type", |
| "codecName", |
| "rtpPayloadType", |
| "ssrc", |
| "targetDelay", |
| "aesKey", |
| "aesIvMask", |
| "timeBase" |
| ] |
| }, |
| "audio_stream": { |
| "allOf": [ |
| {"$ref": "#/definitions/stream"}, |
| { |
| "properties": { |
| "bitRate": {"type": "integer", "minimum": 0}, |
| "channels": {"type": "integer", "minimum": 1} |
| }, |
| "required": ["bitRate", "channels"] |
| } |
| ] |
| }, |
| "video_stream": { |
| "allOf": [ |
| {"$ref": "#/definitions/stream"}, |
| { |
| "properties": { |
| "maxFrameRate": {"$ref": "#/definitions/frame_rate"}, |
| "maxBitRate": {"type": "integer", "minimum": 0}, |
| "resolutions": { |
| "type": "array", |
| "items": {"$ref": "#/definitions/resolution"} |
| }, |
| "errorRecoveryMode": { |
| "type": "string", |
| "enum": ["castv2", "intra_mb_refresh"], |
| "default": "castv2" |
| } |
| }, |
| "required": ["maxFrameRate", "maxBitRate", "resolutions"] |
| } |
| ] |
| }, |
| "offer": { |
| "properties": { |
| "supportedStreams": { |
| "type": "array", |
| "items": {"$ref": "#/definitions/stream"} |
| }, |
| "castMode": {"type": "string", "enum": ["mirroring", "remoting"]}, |
| "receiverStatus": {"type": "boolean"} |
| } |
| }, |
| "audio_constraints": { |
| "properties": { |
| "maxSampleRate": { |
| "type": "integer", |
| "minimum": 16000, |
| "default": 48000, |
| "maximum": 96000 |
| }, |
| "maxChannels": {"type": "integer", "minimum": 1, "default": 2}, |
| "minBitRate": {"type": "integer", "minimum": 32000, "maximum": 320000}, |
| "maxBitRate": {"type": "integer", "minimum": 32000, "maximum": 320000}, |
| "maxDelay": {"$ref": "#/definitions/delay"} |
| }, |
| "required": ["maxSampleRate", "maxChannels", "maxBitRate", "maxDelay"] |
| }, |
| "video_constraints": { |
| "properties": { |
| "maxPixelsPerSecond": {"type": "number", "minimum": 0}, |
| "minDimensions": {"$ref": "#/definitions/dimensions"}, |
| "maxDimensions": {"$ref": "#/definitions/dimensions"}, |
| "minBitRate": {"type": "integer", "minimum": 300000}, |
| "maxBitRate": {"type": "integer", "minimum": 300000}, |
| "maxDelay": {"$ref": "#/definitions/delay"} |
| }, |
| "required": [ |
| "maxPixelsPerSecond", |
| "maxDimensions", |
| "maxBitRate", |
| "maxDelay" |
| ] |
| }, |
| "constraints": { |
| "properties": { |
| "audio": {"$ref": "#/definitions/audio_constraints"}, |
| "video": {"$ref": "#/definitions/video_constraints"} |
| }, |
| "required": ["audio", "video"] |
| }, |
| "display": { |
| "$id": "#display", |
| "properties": { |
| "dimensions": {"$ref": "#/definitions/dimensions"}, |
| "aspectRatio": {"type": "string", "pattern": "[0-9]+:[0-9]+"}, |
| "scaling": {"type": "string", "enum": ["sender", "receiver"]} |
| }, |
| "required": [] |
| }, |
| "error": { |
| "properties": { |
| "code": {"type": "integer"}, |
| "description": {"type": "string"}, |
| "details": {"type": "string"} |
| }, |
| "required": ["code", "description"] |
| }, |
| "answer": { |
| "type": "object", |
| "properties": { |
| "udpPort": {"type": "integer", "minimum": 1, "maximum": 65535}, |
| "sendIndexes": { |
| "type": "array", |
| "items": {"type": "integer", "minimum": 0} |
| }, |
| "ssrcs": {"type": "array", "items": {"$ref": "#/definitions/ssrc"}}, |
| "constraints": {"$ref": "#/definitions/constraints"}, |
| "display": {"$ref": "#/definitions/display"}, |
| "receiverRtcpEventLog": { |
| "type": "array", |
| "items": {"type": "integer", "minimum": 0} |
| }, |
| "receiverRtcpDscp": { |
| "type": "array", |
| "items": {"type": "integer", "minimum": 0} |
| }, |
| "receiverGetStatus": {"type": "boolean"}, |
| "rtpExtensions": {"$ref": "#/definitions/rtp_extensions"} |
| }, |
| "required": ["udpPort", "constraints", "sendIndexes", "ssrcs"] |
| }, |
| "status_response": { |
| "properties": { |
| "wifiSpeed": { |
| "type": "array", |
| "items": {"type": "integer", "minimum": 0} |
| }, |
| "wifiFcsError": { |
| "type": "array", |
| "items": {"type": "integer", "minimum": 0} |
| }, |
| "wifiSnr": {"type": "number", "examples": ["3.23", "50.1"]} |
| } |
| }, |
| "capabilities": { |
| "$id": "#capabilities", |
| "type": "object", |
| "properties": { |
| "mediaCaps": { |
| "type": "array", |
| "items": { |
| "type": "string", |
| "enum": [ |
| "audio", |
| "aac", |
| "opus", |
| "video", |
| "4k", |
| "h264", |
| "vp8", |
| "hevc", |
| "vp9" |
| ] |
| } |
| }, |
| "remoting": {"type": "integer"} |
| }, |
| "required": ["mediaCaps"] |
| } |
| }, |
| "type": "object", |
| "properties": { |
| "offer": {"$ref": "#/definitions/offer"}, |
| "answer": {"$ref": "#/definitions/answer"}, |
| "capabilities": {"$ref": "#/definitions/capabilities"}, |
| "error": {"$ref": "#/definitions/error"}, |
| "result": {"type": "string", "enum": ["ok", "error"]}, |
| "seqNum": {"type": "integer", "minimum": 0}, |
| "sessionId": {"type": "integer"}, |
| "get_status": { |
| "type": "array", |
| "items": { |
| "type": "string", |
| "enum": ["wifiFcsError", "wifiSnr", "wifiSpeed"] |
| } |
| }, |
| "status": {"$ref": "#/definitions/status_response"}, |
| "type": { |
| "type": "string", |
| "enum": [ |
| "OFFER", |
| "ANSWER", |
| "GET_STATUS", |
| "STATUS_RESPONSE", |
| "GET_CAPABILITIES", |
| "CAPABILITIES_RESPONSE", |
| "RPC" |
| ] |
| } |
| }, |
| "required": ["type"], |
| "allOf": [ |
| { |
| "if": { |
| "properties": {"type": {"enum": ["ANSWER", "CAPABILITIES_RESPONSE"]}} |
| }, |
| "then": {"required": ["result"]} |
| }, |
| { |
| "if": {"properties": {"type": {"const": "OFFER"}}}, |
| "then": {"required": ["offer"]} |
| }, |
| { |
| "if": { |
| "properties": {"type": {"const": "ANSWER"}, "result": {"const": "ok"}} |
| }, |
| "then": {"required": ["answer"]} |
| }, |
| { |
| "if": { |
| "properties": { |
| "type": {"const": "CAPABILITIES_RESPONSE"}, |
| "result": {"const": "ok"} |
| } |
| }, |
| "then": {"required": ["capabilities"]} |
| }, |
| { |
| "if": {"properties": {"type": {"const": "GET_STATUS"}}}, |
| "then": {"required": ["get_status"]} |
| }, |
| { |
| "if": {"properties": {"type": {"const": "STATUS_RESPONSE"}}}, |
| "then": {"required": ["status"]} |
| }, |
| { |
| "if": { |
| "properties": {"type": {"const": "RPC"}, "result": {"const": "ok"}} |
| }, |
| "then": {"required": ["rpc"]} |
| } |
| ] |
| } |
