dragonbones-runtime/.cache/egret-core-5.1.0/src/egret/media/native/NativeSoundChannel.ts

the tools to build dragonbones file for diffrent framework

//////////////////////////////////////////////////////////////////////////////////////
//
//  Copyright (c) 2014-present, Egret Technology.
//  All rights reserved.
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//  modification, are permitted provided that the following conditions are met:
//
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above copyright
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//       derived from this software without specific prior written permission.
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//////////////////////////////////////////////////////////////////////////////////////

namespace egret.native {

    /**
     * @private
     * @inheritDoc
     */
    export class NativeSoundChannel extends egret.EventDispatcher implements egret.SoundChannel {


        /**
         * @private
         */
        $url:string;
        /**
         * @private
         */
        $loops:number;
        /**
         * @private
         */
        $startTime:number = 0;
        /**
         * @private
         */
        private audio:any = null;

        //声音是否已经播放完成
        private isStopped:boolean = false;

        /**
         * @private
         */
        constructor(audio:any) {
            super();
            audio.addEventListener("ended", this.onPlayEnd);
            this.audio = audio;
        }

        $play():void {
            if (this.isStopped) {
                egret.$error(1036);
                return;
            }

            try {
                this.audio.currentTime = this.$startTime;
            }
            catch (e) {

            }
            finally {
                this.audio.volume = this.$volume;
                this.audio.play();
            }
        }

        /**
         * @private
         */
        private onPlayEnd = () => {
            if (this.$loops == 1) {
                this.stop();

                this.dispatchEventWith(egret.Event.SOUND_COMPLETE);
                return;
            }

            if (this.$loops > 0) {
                this.$loops--;
            }

            /////////////
            //this.audio.load();
            this.$play();
        };

        /**
         * @private
         * @inheritDoc
         */
        public stop() {
            if (!this.audio)
                return;

            if (!this.isStopped) {
                sys.$popSoundChannel(this);
            }
            this.isStopped = true;

            let audio = this.audio;
            audio.pause();
            audio.removeEventListener("ended", this.onPlayEnd);
            this.audio = null;

            NativeSound.$recycle(this.$url, audio);
        }

        private $volume:number = 1;
        /**
         * @private
         * @inheritDoc
         */
        public get volume():number {
            return this.$volume;
        }

        /**
         * @inheritDoc
         */
        public set volume(value:number) {
            if (this.isStopped) {
                egret.$error(1036);
                return;
            }
            this.$volume = value;            
            if (!this.audio)
                return;
            this.audio.volume = value;
        }

        /**
         * @private
         * @inheritDoc
         */
        public get position():number {
            if (!this.audio)
                return 0;
            return this.audio.currentTime;
        }
    }
}