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Prepare for optimised forward MDCT implementations

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This adds a function pointer for forward MDCT to FFTContext and
initialises it with the existing C function.  ff_calc_mdct() is
changed to an inline function calling the selected version as
done for other fft/mdct functions.

Originally committed as revision 19818 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Måns Rullgård
2009-09-11 02:24:19 +00:00
parent 750f5034cf
commit 46c32e2654
3 changed files with 10 additions and 2 deletions
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libavcodec/mdct.c
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@@ -180,7 +180,7 @@ void ff_imdct_calc_c(MDCTContext *s, FFTSample *output, const FFTSample *input)
* @param input N samples
* @param out N/2 samples
*/
void ff_mdct_calc(MDCTContext *s, FFTSample *out, const FFTSample *input)
void ff_mdct_calc_c(MDCTContext *s, FFTSample *out, const FFTSample *input)
{
int i, j, n, n8, n4, n2, n3;
FFTSample re, im;