Migrate all codec data parsing logic into new file

src/isobmff/isobmff-boxes.ts

@@ -14,7 +14,6 @@ import {
 import {
 	AudioCodec,
 	generateAv1CodecConfigurationFromCodecString,
-	parseOpusIdentificationHeader,
 	parsePcmCodec,
 	PCM_AUDIO_CODECS,
 	PcmAudioCodec,
@@ -32,6 +31,7 @@ import {
 	IsobmffVideoTrackData,
 	Sample,
 } from './isobmff-muxer';
+import { parseOpusIdentificationHeader } from '../codec-data';
 
 export class IsobmffBoxWriter {
 	private helper = new Uint8Array(8);

src/isobmff/isobmff-demuxer.ts

@@ -1,18 +1,21 @@
-import { AvcDecoderConfigurationRecord, HevcDecoderConfigurationRecord } from '../avc';
 import {
 	AacCodecInfo,
 	AudioCodec,
-	Av1CodecInfo,
 	extractAudioCodecString,
-	extractAv1CodecInfoFromFrame,
 	extractVideoCodecString,
-	extractVp9CodecInfoFromFrame,
 	MediaCodec,
 	parseAacAudioSpecificConfig,
 	PCM_AUDIO_CODECS,
 	VideoCodec,
-	Vp9CodecInfo,
 } from '../codec';
+import {
+	AvcDecoderConfigurationRecord,
+	HevcDecoderConfigurationRecord,
+	Vp9CodecInfo,
+	Av1CodecInfo,
+	extractVp9CodecInfoFromFrame,
+	extractAv1CodecInfoFromFrame,
+} from '../codec-data';
 import { Demuxer } from '../demuxer';
 import { Input } from '../input';
 import {

src/isobmff/isobmff-muxer.ts

@@ -21,7 +21,7 @@ import {
 	serializeAvcDecoderConfigurationRecord,
 	serializeHevcDecoderConfigurationRecord,
 	transformAnnexBToLengthPrefixed,
-} from '../avc';
+} from '../codec-data';
 
 export const GLOBAL_TIMESCALE = 1000;
 const TIMESTAMP_OFFSET = 2_082_844_800; // Seconds between Jan 1 1904 and Jan 1 1970