//please use this one instead of parseClip bc i need the async stuff here //for rendering to work - i don't think any of the other methods have to //be async but everything's gotta be here soundify = { //jimmie const soundify = async (clip) => Algebra.match({ Volume: async ({clip, soundLevel}) => { //lauren let sClip = clip; if(sClip.tag) { sClip = await soundify(clip); } const output = audioCtx.createBuffer( sClip.numberOfChannels, audioCtx.sampleRate * sClip.duration, //duration equal to duration audioCtx.sampleRate ); //actually fill the buffer, first with clip 1 for (let channelNumber = 0; channelNumber < sClip.numberOfChannels; channelNumber++) { const outputData = output.getChannelData(channelNumber); const bufferData = sClip.getChannelData(channelNumber); for (let i = bufferData.length - 1; i >= 0; i--) { outputData[i] += bufferData[i] * soundLevel; } output.getChannelData(channelNumber).set(outputData); } return output; }, AddOn: async ({clips}) => { let sClips = clips; for (let i = 0; i < sClips.length; i++) { if (sClips[i].tag) sClips[i] = await soundify(clips[i]); } //make the new buffer const output = audioCtx.createBuffer( sClips.reduce((max, clip) => Math.max(clip.numberOfChannels, max), 0), audioCtx.sampleRate * (sClips.reduce((duration, clip) => duration + clip.duration, 0)), //duration equal to sum of durations yay audioCtx.sampleRate ); //fold the array into a single buffer sClips.reduce((bufferLength, clip) => { let currLength; for (let channelNumber = 0; channelNumber < clip.numberOfChannels; channelNumber++) { const outputData = output.getChannelData(channelNumber); const bufferData = clip.getChannelData(channelNumber); for (let i = bufferData.length - 1; i >= 0; i--) { outputData[i + bufferLength] += bufferData[i]; } output.getChannelData(channelNumber).set(outputData); currLength = bufferData.length; } return bufferLength + currLength; }, 0) return output; }, Overlay: async ({clips}) => { //code adapted from crunker: https://github.com/jackedgson/crunker/blob/master/src/crunker.ts //soundify these down to just audio buffers //if it has a .tag, it's still a Clip let soundifiedClipPromises = clips.map(async (clip) => clip.tag ? await soundify(clip) : clip); let soundifiedClips = await Promise.all(soundifiedClipPromises); //create the output buffer const output = audioCtx.createBuffer( Math.max(...soundifiedClips.map((clip) => clip.numberOfChannels)), audioCtx.sampleRate * Math.max(...soundifiedClips.map((clip) => clip.duration)), //duration equal to max duration audioCtx.sampleRate ); //put each clip in the output buffer now soundifiedClips.forEach((clip) => { for (let channelNumber = 0; channelNumber < clip.numberOfChannels; channelNumber++) { const outputData = output.getChannelData(channelNumber); const bufferData = clip.getChannelData(channelNumber); for (let i = clip.getChannelData(channelNumber).length - 1; i >= 0; i--) { outputData[i] += bufferData[i]; } output.getChannelData(channelNumber).set(outputData); } }); return output; }, Reverse: async ({clip}) => { let sClip = clip; if(sClip.tag) { sClip = await soundify(clip); } const output = audioCtx.createBuffer( sClip.numberOfChannels, audioCtx.sampleRate * sClip.duration, //duration equal to duration audioCtx.sampleRate ); //actually fill the buffer, first with clip 1 for (let channelNumber = 0; channelNumber < sClip.numberOfChannels; channelNumber++) { const outputData = output.getChannelData(channelNumber); const bufferData = sClip.getChannelData(channelNumber); for (let i = bufferData.length - 1; i >= 0; i--) { outputData[i] += bufferData[bufferData.length - 1 - i]; } output.getChannelData(channelNumber).set(outputData); } return output; }, FadeOut: async ({clip}) => {//lauren let sClip = clip; if(sClip.tag) { sClip = await soundify(clip); } const output = audioCtx.createBuffer( sClip.numberOfChannels, audioCtx.sampleRate * sClip.duration, //duration equal to duration audioCtx.sampleRate ); //actually fill the buffer, first with clip 1 for (let channelNumber = 0; channelNumber < sClip.numberOfChannels; channelNumber++) { const outputData = output.getChannelData(channelNumber); const bufferData = sClip.getChannelData(channelNumber); for (let i = bufferData.length - 1; i >= 0; i--) { outputData[i] += bufferData[i] * (1 - (i / (bufferData.length - 1))); } output.getChannelData(channelNumber).set(outputData); } return output; }, FromAudio: async ({audio}) => { return audio; //return await audioCtx.decodeAudioData(audio); }, FromFrequency: async ({frequency, length}) => { const output = audioCtx.createBuffer( 2, audioCtx.sampleRate * length, //duration equal to duration audioCtx.sampleRate ); //actually fill the buffer, first with clip 1 for (let channelNumber = 0; channelNumber < 2; channelNumber++) { const outputData = output.getChannelData(channelNumber); for (let i = 0; i < audioCtx.sampleRate * length; i++) { outputData[i] += Math.sin(i / 44100 * frequency * 2 * Math.PI); } output.getChannelData(channelNumber).set(outputData); } return output; }, FromSilence: async ({length}) => { const output = audioCtx.createBuffer( 2, audioCtx.sampleRate * length, //duration equal to duration audioCtx.sampleRate ); //actually fill the buffer, first with clip 1 for (let channelNumber = 0; channelNumber < 2; channelNumber++) { const outputData = output.getChannelData(channelNumber); for (let i = 0; i < audioCtx.sampleRate * length; i++) { outputData[i] += 0; } output.getChannelData(channelNumber).set(outputData); } return output; } })(clip); return soundify; }