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Move/add COSTABLE/SINTABLE macros to dsputil to add extern definitions

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for ff_cos_* and ff_sin_* without introducing too much code duplication.

Originally committed as revision 20243 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Reimar Döffinger 2009-10-15 17:55:51 +00:00
parent 91405541d5
commit 4ee726b670
4 changed files with 64 additions and 40 deletions
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2
libavcodec/costablegen.c
View File

@ -37,7 +37,7 @@ int main(void)
for (i = 4; i <= BITS; i++) {
int m = 1 << i;
double freq = 2*M_PI/m;
printf("const DECLARE_ALIGNED_16(FFTSample, ff_cos_%i[]) = {\n ", m);
printf("COSTABLE(%i) = {\n ", m);
for (j = 0; j < m/2 - 1; j++) {
int idx = j > m/4 ? m/2 - j : j;
printf(" "FLOATFMT",", cos(idx*freq));

37
libavcodec/dsputil.h
View File

@ -743,11 +743,44 @@ typedef struct FFTContext {
} FFTContext;
#if CONFIG_HARDCODED_TABLES
extern const FFTSample* const ff_cos_tabs[13];
#define COSTABLE_CONST const
#else
extern FFTSample* const ff_cos_tabs[13];
#define COSTABLE_CONST
#endif
#define COSTABLE(size) \
COSTABLE_CONST DECLARE_ALIGNED_16(FFTSample, ff_cos_##size[size/2])
#define SINTABLE(size) \
DECLARE_ALIGNED_16(FFTSample, ff_sin_##size[size/2])
extern COSTABLE(16);
extern COSTABLE(32);
extern COSTABLE(64);
extern COSTABLE(128);
extern COSTABLE(256);
extern COSTABLE(512);
extern COSTABLE(1024);
extern COSTABLE(2048);
extern COSTABLE(4096);
extern COSTABLE(8192);
extern COSTABLE(16384);
extern COSTABLE(32768);
extern COSTABLE(65536);
extern COSTABLE_CONST FFTSample* const ff_cos_tabs[13];
extern SINTABLE(16);
extern SINTABLE(32);
extern SINTABLE(64);
extern SINTABLE(128);
extern SINTABLE(256);
extern SINTABLE(512);
extern SINTABLE(1024);
extern SINTABLE(2048);
extern SINTABLE(4096);
extern SINTABLE(8192);
extern SINTABLE(16384);
extern SINTABLE(32768);
extern SINTABLE(65536);
/**
* Sets up a complex FFT.
* @param nbits log2 of the length of the input array

39
libavcodec/fft.c
View File

@ -28,32 +28,23 @@
#include "dsputil.h"
#if CONFIG_HARDCODED_TABLES
#define COSTABLE(size) \
extern const DECLARE_ALIGNED_16(FFTSample, ff_cos_##size[size/2]);
#else
#define COSTABLE(size) \
DECLARE_ALIGNED_16(FFTSample, ff_cos_##size[size/2]);
#endif
/* cos(2*pi*x/n) for 0<=x<=n/4, followed by its reverse */
COSTABLE(16)
COSTABLE(32)
COSTABLE(64)
COSTABLE(128)
COSTABLE(256)
COSTABLE(512)
COSTABLE(1024)
COSTABLE(2048)
COSTABLE(4096)
COSTABLE(8192)
COSTABLE(16384)
COSTABLE(32768)
COSTABLE(65536)
#if CONFIG_HARDCODED_TABLES
const
#if !CONFIG_HARDCODED_TABLES
COSTABLE(16);
COSTABLE(32);
COSTABLE(64);
COSTABLE(128);
COSTABLE(256);
COSTABLE(512);
COSTABLE(1024);
COSTABLE(2048);
COSTABLE(4096);
COSTABLE(8192);
COSTABLE(16384);
COSTABLE(32768);
COSTABLE(65536);
#endif
FFTSample * const ff_cos_tabs[] = {
COSTABLE_CONST FFTSample * const ff_cos_tabs[] = {
ff_cos_16, ff_cos_32, ff_cos_64, ff_cos_128, ff_cos_256, ff_cos_512, ff_cos_1024,
ff_cos_2048, ff_cos_4096, ff_cos_8192, ff_cos_16384, ff_cos_32768, ff_cos_65536,
};

26
libavcodec/rdft.c
View File

@ -27,19 +27,19 @@
*/
/* sin(2*pi*x/n) for 0<=x<n/4, followed by n/2<=x<3n/4 */
DECLARE_ALIGNED_16(FFTSample, ff_sin_16[8]);
DECLARE_ALIGNED_16(FFTSample, ff_sin_32[16]);
DECLARE_ALIGNED_16(FFTSample, ff_sin_64[32]);
DECLARE_ALIGNED_16(FFTSample, ff_sin_128[64]);
DECLARE_ALIGNED_16(FFTSample, ff_sin_256[128]);
DECLARE_ALIGNED_16(FFTSample, ff_sin_512[256]);
DECLARE_ALIGNED_16(FFTSample, ff_sin_1024[512]);
DECLARE_ALIGNED_16(FFTSample, ff_sin_2048[1024]);
DECLARE_ALIGNED_16(FFTSample, ff_sin_4096[2048]);
DECLARE_ALIGNED_16(FFTSample, ff_sin_8192[4096]);
DECLARE_ALIGNED_16(FFTSample, ff_sin_16384[8192]);
DECLARE_ALIGNED_16(FFTSample, ff_sin_32768[16384]);
DECLARE_ALIGNED_16(FFTSample, ff_sin_65536[32768]);
SINTABLE(16);
SINTABLE(32);
SINTABLE(64);
SINTABLE(128);
SINTABLE(256);
SINTABLE(512);
SINTABLE(1024);
SINTABLE(2048);
SINTABLE(4096);
SINTABLE(8192);
SINTABLE(16384);
SINTABLE(32768);
SINTABLE(65536);
FFTSample * const ff_sin_tabs[] = {
ff_sin_16, ff_sin_32, ff_sin_64, ff_sin_128, ff_sin_256, ff_sin_512, ff_sin_1024,
ff_sin_2048, ff_sin_4096, ff_sin_8192, ff_sin_16384, ff_sin_32768, ff_sin_65536,