diff options
| 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/ac3enc_float.c | |
| parent | a7a187a1beb8551101b592bf85f0f31a0db22f61 (diff) | |
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/ac3enc_float.c')
| -rw-r--r-- | libavcodec/ac3enc_float.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/libavcodec/ac3enc_float.c b/libavcodec/ac3enc_float.c index d2435dee15..4f61440b52 100644 --- a/libavcodec/ac3enc_float.c +++ b/libavcodec/ac3enc_float.c @@ -93,8 +93,10 @@ static int normalize_samples(AC3EncodeContext *s) */ static void scale_coefficients(AC3EncodeContext *s) { - s->ac3dsp.float_to_fixed24(s->fixed_coef_buffer, s->mdct_coef_buffer, - AC3_MAX_COEFS * AC3_MAX_BLOCKS * s->channels); + int chan_size = AC3_MAX_COEFS * AC3_MAX_BLOCKS; + s->ac3dsp.float_to_fixed24(s->fixed_coef_buffer + chan_size, + s->mdct_coef_buffer + chan_size, + chan_size * s->channels); } |