diff options
Diffstat (limited to 'libavcodec/ac3tab.c')
-rw-r--r-- | libavcodec/ac3tab.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/libavcodec/ac3tab.c b/libavcodec/ac3tab.c index 69ede84de8..36a7449a72 100644 --- a/libavcodec/ac3tab.c +++ b/libavcodec/ac3tab.c @@ -79,6 +79,21 @@ const uint8_t ff_ac3_channels_tab[8] = { 2, 1, 2, 3, 3, 4, 4, 5 }; +/** + * Table to remap channels from SMPTE order to AC-3 order. + * [channel_mode][lfe][ch] + */ +const uint8_t ff_ac3_enc_channel_map[8][2][6] = { + { { 0, 1, }, { 0, 1, 2, } }, + { { 0, }, { 0, 1, } }, + { { 0, 1, }, { 0, 1, 2, } }, + { { 0, 2, 1, }, { 0, 2, 1, 3, } }, + { { 0, 1, 2, }, { 0, 1, 3, 2, } }, + { { 0, 2, 1, 3, }, { 0, 2, 1, 4, 3, } }, + { { 0, 1, 2, 3, 4, }, { 0, 1, 3, 4, 2, } }, + { { 0, 2, 1, 3, 4, }, { 0, 2, 1, 4, 5, 3 } }, +}; + /* possible frequencies */ const uint16_t ff_ac3_sample_rate_tab[3] = { 48000, 44100, 32000 }; |