Scaffold project

api_sketch.ts

@@ -0,0 +1,135 @@
+abstract class Target {
+
+}
+
+class ArrayBufferTarget extends Target {
+
+}
+
+class StreamTarget extends Target {
+
+}
+
+type OutputOptions = {
+    format: 'mp4' | 'webm' | 'mkv',
+    target: Target
+};
+
+class Output {
+    constructor(options: OutputOptions) {
+
+    }
+
+    addVideoTrack(source: VideoSource) {
+
+    }
+
+    addAudioTrack(source: AudioSource) {
+
+    }
+
+    start() {
+        
+    }
+
+    async finalize() {
+
+    }
+}
+
+abstract class InputSource {
+
+}
+
+type InputOptions = {
+    source: InputSource
+};
+
+class Input {
+    constructor(options: InputOptions) {
+
+    }
+}
+
+abstract class VideoSource {
+
+}
+
+abstract class AudioSource {
+    
+}
+
+type VideoCodecConfig = {
+    codec: 'avc' | 'hevc' | 'vp8' | 'vp9' | 'av1',
+    bitrate: number 
+};
+
+type AudioCodecConfig = {
+    codec: 'aac' | 'opus' | 'vorbis',
+    bitrate: number
+};
+
+class VideoFrameSource extends VideoSource {
+    constructor(codecConfig: VideoCodecConfig) {
+        super();
+    }
+
+    digest(videoFrame: VideoFrame) {
+        
+    }
+}
+
+class CanvasSource extends VideoSource {
+    constructor(canvas: HTMLCanvasElement, codecConfig: VideoCodecConfig) {
+        super();
+    }
+
+    digest(timestamp: number) {
+
+    }
+}
+
+class MediaStreamTrackVideoSource extends VideoSource {
+    constructor(track: MediaStreamTrack, codecConfig: VideoCodecConfig) {
+        super();
+    }
+}
+
+class AudioDataSource extends AudioSource {
+    constructor(audioData: AudioData, codecConfig: AudioCodecConfig) {
+        super();
+    }
+}
+
+class AudioBufferSource extends AudioSource {
+    constructor(audioBuffer: AudioBuffer, codecConfig: AudioCodecConfig) {
+        super();
+    }
+}
+
+class MediaStreamTrackAudioSource extends AudioSource {
+    constructor(track: MediaStreamTrack, codecConfig: AudioCodecConfig) {
+        super();
+    }
+}
+
+let output = new Output({
+    format: 'mp4',
+    target: new ArrayBufferTarget()
+});
+
+let source = new CanvasSource(document.createElement('canvas'), {
+    codec: 'avc',
+    bitrate: 1e6
+});
+
+output.addVideoTrack(source);
+
+output.start();
+
+source.digest(0)
+source.digest(1)
+source.digest(2)
+source.digest(3)
+
+output.finalize()