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opustab: comment ff_celt_tf_select

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Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
This commit is contained in:
Rostislav Pehlivanov 2017-07-10 23:39:56 +01:00
parent ba67c2349c
commit 03d8fbc09c
1 changed files with 9 additions and 4 deletions
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13
libavcodec/opustab.c
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@ -772,11 +772,16 @@ const uint8_t ff_celt_log_freq_range[] = {
0, 0, 0, 0, 0, 0, 0, 0, 8, 8, 8, 8, 16, 16, 16, 21, 21, 24, 29, 34, 36
};
/* Positive - increased freqeuency resolution (only possible on transients)
* Negative - increased time resolution */
const int8_t ff_celt_tf_select[4][2][2][2] = {
{ { { 0, -1 }, { 0, -1 } }, { { 0, -1 }, { 0, -1 } } },
{ { { 0, -1 }, { 0, -2 } }, { { 1, 0 }, { 1, -1 } } },
{ { { 0, -2 }, { 0, -3 } }, { { 2, 0 }, { 1, -1 } } },
{ { { 0, -2 }, { 0, -3 } }, { { 3, 0 }, { 1, -1 } } }
/* OFF ON Transient frame */
/* OFF ON OFF ON TF select flag */
/* OFF ON OFF ON OFF ON OFF ON TF change flag */
{ { { 0, -1 }, { 0, -1 } }, { { 0, -1 }, { 0, -1 } } }, /* 120 */
{ { { 0, -1 }, { 0, -2 } }, { { 1, 0 }, { 1, -1 } } }, /* 240 */
{ { { 0, -2 }, { 0, -3 } }, { { 2, 0 }, { 1, -1 } } }, /* 480 */
{ { { 0, -2 }, { 0, -3 } }, { { 3, 0 }, { 1, -1 } } } /* 960 */
};
const float ff_celt_mean_energy[] = {