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From ANSI-CTA-608-E R-2014 section 8.4:
> When closed captioning is used on line 21, field 2, it shall conform
> to all of the applicable specifications and recommended practices as
> defined for field 1 services with the following differences:
> 1. The non-printing character of the miscellaneous control-character
> pairs that fall in the range of 0x14, 0x20 to 0x14, 0x2F in field 1,
> shall be replaced with 0x15, 0x20 to 0x15, 0x2F when used in field
> 2.
> 2. The non-printing character of the miscellaneous control-character
> pairs that fall in the range of 0x1C, 0x20 to 0x1C, 0x2F in field
> 1, shall be replaced with 0x1D, 0x20 to 0x1D, 0x2F when used in
> field 2.
This basically means that `cc1=0x15` in field 2 should be interpreted as
`cc1=0x14` in field 1, and same for `0x1D -> 0x1C`.
The `isMiscCode` method above already handles this by ignoring the LSB
(the only difference between `0x14` and `0x15`, and `0x1C` and `0x1D`)
by AND-ing with `0xF6` instead of `0xF7`. This change uses the same
trick in `isServiceSwitchCommand`.
Issue: google/ExoPlayer#10666
#minor-release
PiperOrigin-RevId: 483927506
(cherry picked from commit
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| .. | ||
| cast | ||
| common | ||
| database | ||
| datasource | ||
| datasource_cronet | ||
| datasource_okhttp | ||
| datasource_rtmp | ||
| decoder | ||
| decoder_av1 | ||
| decoder_ffmpeg | ||
| decoder_flac | ||
| decoder_opus | ||
| decoder_vp9 | ||
| effect | ||
| exoplayer | ||
| exoplayer_dash | ||
| exoplayer_hls | ||
| exoplayer_ima | ||
| exoplayer_rtsp | ||
| exoplayer_smoothstreaming | ||
| exoplayer_workmanager | ||
| extractor | ||
| session | ||
| test_data | ||
| test_exoplayer_playback | ||
| test_session_common | ||
| test_session_current | ||
| test_utils | ||
| test_utils_robolectric | ||
| transformer | ||
| ui | ||
| ui_leanback | ||