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Use decoder information for resampler sample rate, fix Opus sample rate to 48 kHz everywhere

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Vanilagy
2025-09-10 23:03:20 +02:00
parent f314f04037
commit 6f06631355
12 changed files with 52 additions and 40 deletions
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src/ogg/ogg-demuxer.ts
+3 -3
View File
@@ -6,7 +6,7 @@
* file, You can obtain one at https://mozilla.org/MPL/2.0/.
*/
import { OPUS_INTERNAL_SAMPLE_RATE } from '../codec';
import { OPUS_SAMPLE_RATE } from '../codec';
import { parseModesFromVorbisSetupPacket, parseOpusIdentificationHeader } from '../codec-data';
import { Demuxer } from '../demuxer';
import { Input } from '../input';
@@ -249,7 +249,7 @@ export class OggDemuxer extends Demuxer {
const header = parseOpusIdentificationHeader(firstPacket.data);
bitstream.numberOfChannels = header.outputChannelCount;
bitstream.sampleRate = header.inputSampleRate;
bitstream.sampleRate = OPUS_SAMPLE_RATE; // Always the same
bitstream.codecInfo.opusInfo = {
preSkip: header.preSkip,
@@ -574,7 +574,7 @@ class OggAudioTrackBacking implements InputAudioTrackBacking {
constructor(public bitstream: LogicalBitstream, public demuxer: OggDemuxer) {
// Opus always uses a fixed sample rate for its internal calculations, even if the actual rate is different
this.internalSampleRate = bitstream.codecInfo.codec === 'opus'
? OPUS_INTERNAL_SAMPLE_RATE
? OPUS_SAMPLE_RATE
: bitstream.sampleRate;
}
src/ogg/ogg-muxer.ts
+2 -2
View File
@@ -6,7 +6,7 @@
* file, You can obtain one at https://mozilla.org/MPL/2.0/.
*/
import { OPUS_INTERNAL_SAMPLE_RATE, validateAudioChunkMetadata } from '../codec';
import { OPUS_SAMPLE_RATE, validateAudioChunkMetadata } from '../codec';
import { parseModesFromVorbisSetupPacket, parseOpusIdentificationHeader } from '../codec-data';
import {
assert,
@@ -119,7 +119,7 @@ export class OggMuxer extends Muxer {
track,
serialNumber,
internalSampleRate: track.source._codec === 'opus'
? OPUS_INTERNAL_SAMPLE_RATE
? OPUS_SAMPLE_RATE
: meta.decoderConfig.sampleRate,
codecInfo: {
codec: track.source._codec,