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Add toAvFrame, NodeAv* -> Av*, add server README, fix track synchronizer in conversion, increase default cache size for ReadableStreamSource

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This commit is contained in:
Vanilagy
2026-05-13 15:26:13 +02:00
parent d2d485196f
commit 292189e3d4
15 changed files with 4597 additions and 88 deletions
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packages/server/src/audio-sample.ts
+24 -6
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@@ -6,9 +6,9 @@
* file, You can obtain one at https://mozilla.org/MPL/2.0/.
*/
import { AudioSampleResource } from 'mediabunny';
import { AudioSample, AudioSampleResource } from 'mediabunny';
import * as NodeAv from 'node-av';
import { toAudioSampleFormat } from './misc';
import { fromAudioSampleFormat, getChannelLayout, toAudioSampleFormat } from './misc';
import { assert, toUint8Array } from '../../../src/misc';
/**
@@ -17,10 +17,13 @@ import { assert, toUint8Array } from '../../../src/misc';
* [`AVFrame`](https://ffmpeg.org/doxygen/2.7/structAVFrame.html). You can use this resource to create `AudioSample`
* instances that are directly backed by FFmpeg's `AVFrame` without data having to be copied.
*
* When passed, the `Frame` is now owned by resource, meaning it takes care of closing the frame later. If you want to
* keep a copy for your own use, clone the frame first.
*
* @group \@mediabunny/server
* @public
*/
export class NodeAvFrameAudioSampleResource extends AudioSampleResource {
export class AvFrameAudioSampleResource extends AudioSampleResource {
/** @internal */
_frame: NodeAv.Frame | null;
@@ -30,7 +33,7 @@ export class NodeAvFrameAudioSampleResource extends AudioSampleResource {
*/
get frame() {
if (!this._frame) {
throw new Error('NodeAvFrameAudioSampleResource has been closed.');
throw new Error('AvFrameAudioSampleResource has been closed.');
}
return this._frame;
@@ -40,7 +43,7 @@ export class NodeAvFrameAudioSampleResource extends AudioSampleResource {
super();
if (frame.getMediaType() !== NodeAv.AVMEDIA_TYPE_AUDIO) {
throw new Error('NodeAvFrameAudioSampleResource must be initialized with an audio frame.');
throw new Error('AvFrameAudioSampleResource must be initialized with an audio frame.');
}
this._frame = frame;
@@ -49,7 +52,8 @@ export class NodeAvFrameAudioSampleResource extends AudioSampleResource {
getFormat(): AudioSampleFormat {
const result = toAudioSampleFormat(this.frame.format as NodeAv.AVSampleFormat);
if (result === null) {
throw new TypeError('Unsupported audio sample format: ' + this.frame.format);
const name = NodeAv.avGetSampleFmtName(this.frame.format as NodeAv.AVSampleFormat);
throw new TypeError(`Unsupported audio sample format: ${name} (${this.frame.format})`);
}
return result;
@@ -81,3 +85,17 @@ export class NodeAvFrameAudioSampleResource extends AudioSampleResource {
return toUint8Array(this.frame.data[planeIndex]!);
}
}
export const copyAudioSampleToAvFrame = (sample: AudioSample, frame: NodeAv.Frame) => {
frame.format = fromAudioSampleFormat(sample.format);
frame.nbSamples = sample.numberOfFrames;
frame.sampleRate = sample.sampleRate;
frame.channelLayout = getChannelLayout(sample.numberOfChannels);
frame.allocBuffer();
assert(frame.data);
for (let i = 0; i < frame.data.length; i++) {
sample.copyTo(frame.data[i]!, { planeIndex: i });
}
};