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3dnow2 implementation of imdct.

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6% faster vorbis and wma.

Originally committed as revision 5954 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Loren Merritt
2006-08-08 04:01:04 +00:00
parent 2c5ad5fd74
commit bcfa3e58ee
5 changed files with 93 additions and 7 deletions
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6
libavcodec/dsputil.h
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@@ -594,6 +594,8 @@ void get_psnr(uint8_t *orig_image[3], uint8_t *coded_image[3],
FFTSample type */
typedef float FFTSample;
struct MDCTContext;
typedef struct FFTComplex {
FFTSample re, im;
} FFTComplex;
@@ -605,6 +607,8 @@ typedef struct FFTContext {
FFTComplex *exptab;
FFTComplex *exptab1; /* only used by SSE code */
void (*fft_calc)(struct FFTContext *s, FFTComplex *z);
void (*imdct_calc)(struct MDCTContext *s, FFTSample *output,
const FFTSample *input, FFTSample *tmp);
} FFTContext;
int ff_fft_init(FFTContext *s, int nbits, int inverse);
@@ -635,6 +639,8 @@ typedef struct MDCTContext {
int ff_mdct_init(MDCTContext *s, int nbits, int inverse);
void ff_imdct_calc(MDCTContext *s, FFTSample *output,
const FFTSample *input, FFTSample *tmp);
void ff_imdct_calc_3dn2(MDCTContext *s, FFTSample *output,
const FFTSample *input, FFTSample *tmp);
void ff_mdct_calc(MDCTContext *s, FFTSample *out,
const FFTSample *input, FFTSample *tmp);
void ff_mdct_end(MDCTContext *s);