forked from Teaonly/android-eye
-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Signed-off-by: Zhou Chang <[email protected]>
- Loading branch information
Showing
5 changed files
with
269 additions
and
19 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,86 @@ | ||
| function TeaMedia(blob, parseDone) { | ||
| // vars | ||
| this.pcmBlocks = null; | ||
| this.nalBlocks = null; | ||
|
|
||
| // call backs | ||
| this.onParseDone = parseDone; | ||
|
|
||
| // public interfaces | ||
| this.getPicturePayload = function() { | ||
|
|
||
| }.bind(this); | ||
|
|
||
| this.getAudioPayload = function() { | ||
|
|
||
| }.bind(this); | ||
|
|
||
| // internal functions | ||
| this._findNext = function(payload, i) { | ||
| var info = {'type': 0, 'length': 0}; | ||
|
|
||
| if ( payload[i] === 0x19 | ||
| && payload[i+1] === 0x79 | ||
| && payload[i+2] === 0x10 | ||
| && payload[i+3] === 0x10) { | ||
|
|
||
| info.type = 1; | ||
| info.length = (payload[i+7] << 24) + (payload[i+6] << 16) + (payload[i+5] << 8) + payload[i+4]; | ||
|
|
||
| } else if ( payload[i] === 0x19 | ||
| && payload[i+1] === 0x82 | ||
| && payload[i+2] === 0x08 | ||
| && payload[i+3] === 0x25) { | ||
| info.type = 2; | ||
| info.length = (payload[i+7] << 24) + (payload[i+6] << 16) + (payload[i+5] << 8) + payload[i+4]; | ||
| } | ||
|
|
||
| return info; | ||
|
|
||
| }.bind(this); | ||
|
|
||
| this._decodeBuffer = function(arrayBuffer) { | ||
| var payload = new Uint8Array(arrayBuffer); | ||
|
|
||
| var i = 0; | ||
| while(1) { | ||
| if ( payload.length - i <= 8) { | ||
| // drop left data, because it is not a packet. | ||
| break; | ||
| } | ||
|
|
||
| info = this._findNext(payload, i); | ||
| if ( info.type === 1) { | ||
| this.nalBlocks.push ( payload.subarray(i+8, i+8+info.length) ); | ||
| i = i + 8 + info.length; | ||
| } else if ( info.type === 2) { | ||
| this.pcmBlocks.push ( payload.subarray(i+8, i+8+info.length) ); | ||
| i = i + 8 + info.length; | ||
| } else { | ||
| break; | ||
| } | ||
| } | ||
|
|
||
| this.onParseDone(); | ||
|
|
||
| }.bind(this); | ||
|
|
||
| this._constructor = function() { | ||
| this.pcmBlocks = []; | ||
| this.nalBlocks = []; | ||
|
|
||
| var fileReader = new FileReader(); | ||
| var that = this; | ||
| fileReader.onload = function() { | ||
| that._decodeBuffer( this.result); | ||
| }; | ||
| fileReader.readAsArrayBuffer(blob); | ||
|
|
||
| }.bind(this); | ||
|
|
||
|
|
||
|
|
||
|
|
||
| // init | ||
| this._constructor(); | ||
| }; |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,152 @@ | ||
| function Player (canvas, sampleRate) { | ||
| // vars | ||
| this._canvas = null; | ||
| this._canvasContext = null; | ||
|
|
||
| this._avc = null; | ||
| this._videoBufferList = null; | ||
| this._dummyCanvas = null; | ||
| this._dummyCtx = null; | ||
|
|
||
|
|
||
| this._sampleRate = -1; | ||
| this._audioCtx = null; | ||
| this._beginTime = -1; | ||
| this._audioBufferList = null; | ||
|
|
||
| // call backs | ||
| this.onStreamStarvation = null; | ||
|
|
||
| // public functions | ||
| this._constructor = function() { | ||
| this._canvas = canvas; | ||
| this._canvasContext = this._canvas.getContext("2d"); | ||
|
|
||
| window.AudioContext = window.AudioContext || window.webkitAudioContext; | ||
| this._audioCtx = new AudioContext(); | ||
| this._sampleRate = sampleRate; | ||
| this._audioBufferList = new Array(); | ||
|
|
||
|
|
||
|
|
||
| this._avc = new Avc(); | ||
| this._avc.onPictureDecoded = function(buffer, wid, hei) { | ||
| var yuv = new Uint8Array(buffer.length); | ||
| yuv.set( buffer, 0, buffer.length); | ||
| this._pushVideoBuffer({'yuv':yuv, 'wid':wid, 'hei':hei}); | ||
| }.bind(this); | ||
|
|
||
| this._videoBufferList = new Array(); | ||
|
|
||
| }.bind(this); | ||
|
|
||
| this.playMedia = function(media) { | ||
| var i = 0; | ||
| var totalLength = 0; | ||
| for(i = 0; i < media.pcmBlocks.length; i++) { | ||
|
|
||
| var audioDecoder = new AdpcmDecoder(); | ||
| var pcmData = audioDecoder.doDecode(media.pcmBlocks[i]); | ||
| audioDecoder.release(); | ||
| delete audioDecoder; | ||
|
|
||
| this._pushAudioBuffer(pcmData); | ||
| } | ||
|
|
||
| delete media; | ||
| }.bind(this); | ||
|
|
||
| // private functions | ||
| this._pushAudioBuffer = function(pcmData) { | ||
| var source = this._createAudioSource(pcmData); | ||
| source.connect(this._audioCtx.destination); | ||
|
|
||
| source.onended = function(evt) { | ||
| this._audioBufferList.shift(); | ||
| if ( (this._audioBufferList.length === 0) && (this.onStreamStarvation !== null) ) { | ||
| this.onStreamStarvation(); | ||
| } | ||
| this._beginTime = this._audioCtx.currentTime; | ||
| }.bind(this); | ||
|
|
||
| var bufferedDuration = 0; | ||
| var leftDuration = 0; | ||
| if ( this._audioBufferList.length > 0) { | ||
| for (i = 1; i < this._audioBufferList.length; i++) { | ||
| bufferedDuration += this._audioBufferList[i].buffer.duration; | ||
| } | ||
| leftDuration = this._audioCtx.currentTime - this._beginTime; | ||
| } else { | ||
| this._beginTime = this._audioCtx.currentTime; | ||
| } | ||
| this._audioBufferList.push(source); | ||
|
|
||
| source.start(leftDuration + bufferedDuration); | ||
| }.bind(this); | ||
|
|
||
| this._createAudioSource = function(data) { | ||
| // create pcm buffer | ||
| var pcmShort = new Int16Array(data.length/2); | ||
| for(var i = 0, j = 0; i < data.length; i+=2) { | ||
| pcmShort[j] = (data[i] & 0xFF) | ((data[i+1] & 0xff) << 8); | ||
| j++; | ||
| } | ||
| var pcmFloat = new Float32Array(pcmShort.length); | ||
| for(var i = 0; i < pcmFloat.length; i++) { | ||
| pcmFloat[i] = pcmShort[i] / 32768; | ||
| } | ||
| delete pcmShort; | ||
| var audioBuffer = this._audioCtx.createBuffer(1, pcmFloat.length, this._sampleRate); | ||
| audioBuffer.getChannelData(0).set(pcmFloat); | ||
|
|
||
| // create play source node | ||
| var source = this._audioCtx.createBufferSource(); | ||
| source.buffer = audioBuffer; | ||
| return source; | ||
| }.bind(this); | ||
|
|
||
| this._showPicture = function(picture) { | ||
| if ( this._dummyCtx === null) { | ||
| this._dummyCanvas = document.createElement("canvas"); | ||
| this._dummyCanvas.width = picture.wid; | ||
| this._dummyCanvas.height = picture.hei; | ||
| this._dummyCtx = this._dummyCanvas.getContext("2d"); | ||
| } | ||
|
|
||
| var imageData = this._dummyCtx.createImageData(picture.wid, picture.hei); | ||
| yuv2ImageData(picture.yuv, imageData); | ||
| this._dummyCtx.putImageData(imageData, 0, 0); | ||
|
|
||
| var img = new Image(); | ||
| img.src = this._dummyCanvas.toDataURL("image/png"); | ||
| img.onload = function () { | ||
| this._canvasContext.drawImage(img, 0, 0, this._canvas.width, this._canvas.height); | ||
| delete img; | ||
| }.bind(this); | ||
| img.onerror = function (stuff) { | ||
| console.log("Img Onerror:", stuff); | ||
| }; | ||
| }.bind(this); | ||
|
|
||
| this._playVideo = function() { | ||
| if ( this._videoBufferList.length >= 2) { | ||
| setTimeout(this._playVideo, 200); | ||
| } | ||
|
|
||
| this._showPicture(this._videoBufferList[0] ); | ||
| delete this._videoBufferList[0].payload; | ||
| this._videoBufferList.shift(); | ||
| }.bind(this); | ||
|
|
||
| this._pushVideoBuffer = function(picture) { | ||
| this._videoBufferList.push(picture); | ||
|
|
||
| if ( this._videoBufferList.length === 1) { | ||
| setTimeout(this._playVideo, 10); | ||
| } | ||
|
|
||
| }.bind(this); | ||
|
|
||
| // init | ||
| this._constructor(); | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters