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Improve readability of constant numbers and documentation in DtsUtil

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PiperOrigin-RevId: 597493602
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rohks 2024-01-11 02:23:09 -08:00 committed by Copybara-Service
parent 733301d562
commit 0f33ef3906
1 changed files with 7 additions and 6 deletions
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13
libraries/extractor/src/main/java/androidx/media3/extractor/DtsUtil.java
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@ -60,21 +60,22 @@ public final class DtsUtil {
private static final byte FIRST_BYTE_LE = (byte) (SYNC_VALUE_LE >>> 24);
private static final byte FIRST_BYTE_14B_LE = (byte) (SYNC_VALUE_14B_LE >>> 24);
/** Maps AMODE to the number of channels. See ETSI TS 102 114 table 5.4. */
/** Maps AMODE to the number of channels. See ETSI TS 102 114 table 5-4. */
private static final int[] CHANNELS_BY_AMODE =
new int[] {1, 2, 2, 2, 2, 3, 3, 4, 4, 5, 6, 6, 6, 7, 8, 8};
/** Maps SFREQ to the sampling frequency in Hz. See ETSI TS 102 144 table 5.5. */
/** Maps SFREQ to the sampling frequency in Hz. See ETSI TS 102 114 table 5-5. */
private static final int[] SAMPLE_RATE_BY_SFREQ =
new int[] {
-1, 8000, 16000, 32000, -1, -1, 11025, 22050, 44100, -1, -1, 12000, 24000, 48000, -1, -1
-1, 8_000, 16_000, 32_000, -1, -1, 11_025, 22_050, 44_100, -1, -1, 12_000, 24_000, 48_000,
-1, -1
};
/** Maps RATE to 2 * bitrate in kbit/s. See ETSI TS 102 144 table 5.7. */
/** Maps RATE to 2 * bitrate in kbit/s. See ETSI TS 102 114 table 5-7. */
private static final int[] TWICE_BITRATE_KBPS_BY_RATE =
new int[] {
64, 112, 128, 192, 224, 256, 384, 448, 512, 640, 768, 896, 1024, 1152, 1280, 1536, 1920,
2048, 2304, 2560, 2688, 2816, 2823, 2944, 3072, 3840, 4096, 6144, 7680
64, 112, 128, 192, 224, 256, 384, 448, 512, 640, 768, 896, 1_024, 1_152, 1_280, 1_536,
1_920, 2_048, 2_304, 2_560, 2_688, 2_816, 2_823, 2_944, 3_072, 3_840, 4_096, 6_144, 7_680
};
/**