diff options
| author | Rostislav Pehlivanov <atomnuker@gmail.com> | 2015-06-26 23:16:34 +0300 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2015-06-29 17:44:40 +0300 |
| commit | 7c10b87b5744179f16411f5981e96738021ec7ca (patch) | |
| tree | 3c2dde11cc45c0fe3ce67124084064e14bd4021d /libavcodec/aacenc.c | |
| parent | da8b228977406b1be95d7881e38651f4e61d1fc6 (diff) | |
aacenc: add support for coding of intensity stereo scalefactor indices
This commit adds support for the coding of intensity stereo scalefactor indices.
It does not do any marking of such bands and as such does no functional changes
to the encoder. It removes any old twoloop specific code for PNS and moves it
into a seperate function which handles setting of scalefactor indices for
PNS and IS bands.
Reviewed-by: Claudio Freire <klaussfreire@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec/aacenc.c')
| -rw-r--r-- | libavcodec/aacenc.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/libavcodec/aacenc.c b/libavcodec/aacenc.c index 897c3a10df..3a512ffeee 100644 --- a/libavcodec/aacenc.c +++ b/libavcodec/aacenc.c @@ -389,7 +389,7 @@ static void encode_scale_factors(AVCodecContext *avctx, AACEncContext *s, SingleChannelElement *sce) { int diff, off_sf = sce->sf_idx[0], off_pns = sce->sf_idx[0] - NOISE_OFFSET; - int noise_flag = 1; + int off_is = 0, noise_flag = 1; int i, w; for (w = 0; w < sce->ics.num_windows; w += sce->ics.group_len[w]) { @@ -402,6 +402,10 @@ static void encode_scale_factors(AVCodecContext *avctx, AACEncContext *s, put_bits(&s->pb, NOISE_PRE_BITS, diff + NOISE_PRE); continue; } + } else if (sce->band_type[w*16 + i] == INTENSITY_BT || + sce->band_type[w*16 + i] == INTENSITY_BT2) { + diff = sce->sf_idx[w*16 + i] - off_is; + off_is = sce->sf_idx[w*16 + i]; } else { diff = sce->sf_idx[w*16 + i] - off_sf; off_sf = sce->sf_idx[w*16 + i]; |