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| author | Alex Converse <alex.converse@gmail.com> | 2010-06-07 21:52:08 +0000 |
|---|---|---|
| committer | Alex Converse <alex.converse@gmail.com> | 2010-06-07 21:52:08 +0000 |
| commit | 932963b8e2e96b3d8c7506d9cf093b54f89d1e78 (patch) | |
| tree | 834d494d60c3f8fce93438b53c5f4164698ee984 /libavcodec/sbr.h | |
| parent | 082a0a33c45d9bc4f3a8d9b1365b5416485ed388 (diff) | |
| download | ffmpeg-932963b8e2e96b3d8c7506d9cf093b54f89d1e78.tar.gz | |
Rewrite the SBR decoder QMF analysis filter on top of the IMDCT instead of the RDFT.
This is based on a procedure to implement the filterbank on the DCT-IV described in
Hsu, H.W. et al. "A Complex Quadrature Mirror Filterbanks for MPEG-4 HE-AAC"
http://sites.google.com/site/wenchiehlee1020/Papers/ComplexFB_AES_121paper144.pdf
Originally committed as revision 23516 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/sbr.h')
| -rw-r--r-- | libavcodec/sbr.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/sbr.h b/libavcodec/sbr.h index 2d9f4a519d..f1da5c5fec 100644 --- a/libavcodec/sbr.h +++ b/libavcodec/sbr.h @@ -176,7 +176,7 @@ typedef struct { float s_m[7][48]; float gain[7][48]; DECLARE_ALIGNED(16, float, qmf_filter_scratch)[5][64]; - RDFTContext rdft; + FFTContext mdct_ana; FFTContext mdct; } SpectralBandReplication; |