add fetchStream

packages/artplayer-plugin-flv/src/flvParse/index.js

@@ -0,0 +1,77 @@
+import fetchStream from './fetchStream';
+import readFile from './readFile';
+
+export default class FlvParse {
+    constructor(flv) {
+        this.flv = flv;
+        this.uint8 = [];
+        this.index = 0;
+        this.header = {};
+        this.tags = [];
+
+        flv.on('flvFetchStart', () => {
+            console.log('flvFetchStart');
+        });
+
+        flv.on('flvFetchInfo', info => {
+            console.log('flvFetchInfo', info);
+        });
+
+        flv.on('flvFetchCancel', () => {
+            console.log('flvFetchCancel');
+        });
+
+        flv.on('flvFetchError', error => {
+            console.log('flvFetchError', error);
+        });
+
+        flv.on('flvFetching', value => {
+            console.log(value);
+        });
+
+        flv.on('flvFetchEnd', value => {
+            console.log('flvFetchEnd', value);
+            if (value) {
+                this.uint8 = value;
+            }
+        });
+
+        const { url } = flv.options;
+        if (typeof url === 'string') {
+            fetchStream(flv, url);
+        } else {
+            readFile(flv, url);
+        }
+    }
+
+    parse() {
+        this.header.signature = this.read(3);
+        this.header.version = this.read(1);
+        this.header.flags = this.read(1);
+        this.header.headersize = this.read(4);
+        this.read(4);
+        while (this.index < this.uint8.length) {
+            const tag = {};
+            tag.tagType = this.read(1);
+            tag.dataSize = this.read(3);
+            tag.Timestamp = this.read(4);
+            tag.StreamID = this.read(3);
+            tag.body = this.read(FlvParse.getBodySum(tag.dataSize));
+            this.tags.push(tag);
+            this.read(4);
+        }
+    }
+
+    read(length) {
+        const tempUint8 = [];
+        for (let i = 0; i < length; i += 1) {
+            tempUint8.push(this.uint8[this.index]);
+            this.index += 1;
+        }
+        return tempUint8;
+    }
+
+    static getBodySum(arr) {
+        return arr[0] * 256 ** 2 + arr[1] * 256 + arr[2];
+    }
+}