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| author | Justin Ruggles <justin.ruggles@gmail.com> | 2011-05-23 17:45:51 +0200 |
|---|---|---|
| committer | Reinhard Tartler <siretart@tauware.de> | 2011-05-24 07:52:31 +0200 |
| commit | 7f3a7b5c40b7fda09cbba4bb53e1ced133970930 (patch) | |
| tree | 7da170e37b9398fa5228d68daa119255f9184226 /libavcodec/ac3tab.h | |
| parent | a7a187a1beb8551101b592bf85f0f31a0db22f61 (diff) | |
| download | ffmpeg-7f3a7b5c40b7fda09cbba4bb53e1ced133970930.tar.gz | |
ac3enc: add channel coupling support
Channel coupling is an optional AC-3 feature that increases quality by
combining high frequency information from multiple channels into a
single channel. The per-channel high frequency information is sent with
less accuracy in both the frequency and time domains. This allows more
bits to be used for lower frequencies while preserving enough
information to reconstruct the high frequencies.
Diffstat (limited to 'libavcodec/ac3tab.h')
| -rw-r--r-- | libavcodec/ac3tab.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/libavcodec/ac3tab.h b/libavcodec/ac3tab.h index 292ce0d32f..e5cd368bb7 100644 --- a/libavcodec/ac3tab.h +++ b/libavcodec/ac3tab.h @@ -39,6 +39,7 @@ extern const uint8_t ff_ac3_dec_channel_map[8][2][6]; extern const uint16_t ff_ac3_sample_rate_tab[3]; extern const uint16_t ff_ac3_bitrate_tab[19]; extern const uint8_t ff_ac3_rematrix_band_tab[5]; +extern const uint8_t ff_eac3_default_cpl_band_struct[18]; extern const int16_t ff_ac3_window[AC3_WINDOW_SIZE/2]; extern const uint8_t ff_ac3_log_add_tab[260]; extern const uint16_t ff_ac3_hearing_threshold_tab[AC3_CRITICAL_BANDS][3]; |