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Revert "Distinguish a failed key source from one with no entry"

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This reverts commit 22a3e3fd01.
This commit is contained in:
Matthew Jackson
2026-07-29 19:15:21 -07:00
parent 50f37462db
commit 4ed245868e
3 changed files with 9 additions and 25 deletions
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src/mux/codec/dts.rs
+6 -7
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@@ -690,13 +690,12 @@ fn dts_core_duration_ns(data: &[u8]) -> u64 {
const DTS_PCMBLOCK_SAMPLES: u32 = 32;
const DTS_SUBBAND_SAMPLES: u32 = 8;
/// Number of LEGAL `AMODE` (channel-arrangement) codes. The 6-bit AMODE field
/// (ETSI TS 102 114 §5.3.1) defines 16 channel arrangements, codes 0-15, of
/// which 10-15 are the 6/7/8-channel layouts; codes 16-63 are
/// reserved/user-defined and undecodable. A frame is dropped only when
/// `audio_mode >= DTS_AMODE_COUNT` (i.e. a truly reserved 16-63 code); dropping a
/// legal 10-15 multichannel core would silence recoverable audio. The per-AMODE
/// channel counts live in `DTS_AMODE_CH` in `mux/mp4/audio.rs`, cross-checked
/// against the speaker masks in `DTS_AMODE_LAYOUT` by an invariant test.
/// (ETSI TS 102 114 §5.3.1) has 16 defined channel arrangements, codes 0-15;
/// only 16-63 are reserved/user-defined and undecodable. ffmpeg's
/// `ff_dca_channels[16] = {1,2,2,2,2,3,3,4,4,5,6,6,6,7,8,8}` confirms all 16 are
/// decodable — codes 10-15 are the 6/7/8-channel layouts. A frame is dropped
/// only when `audio_mode >= DTS_AMODE_COUNT` (i.e. a truly reserved 16-63 code);
/// dropping a legal 10-15 multichannel core would silence recoverable audio.
const DTS_AMODE_COUNT: u32 = 16;
const DTS_LFE_FLAG_INVALID: u32 = 3;