liboilfuncs-dct

liboilfuncs-dct

Synopsis

void                oil_dct36_f32                       (float *d_36,
                                                         int dstr,
                                                         const float *s_36,
                                                         int sstr);
void                oil_fdct8_f64                       (double *d_8,
                                                         const double *s_8,
                                                         int dstr,
                                                         int sstr);
void                oil_fdct8x8_f64                     (double *d_8x8,
                                                         int dstr,
                                                         const double *s_8x8,
                                                         int sstr);
void                oil_fdct8x8s_s16                    (int16_t *d_8x8,
                                                         int ds,
                                                         const int16_t *s_8x8,
                                                         int ss);
void                oil_idct8_f64                       (double *d_8,
                                                         int dstr,
                                                         const double *s_8,
                                                         int sstr);
void                oil_idct8x8_f64                     (double *d_8x8,
                                                         int dstr,
                                                         const double *s_8x8,
                                                         int sstr);
void                oil_idct8x8_s16                     (int16_t *d_8x8,
                                                         int dstr,
                                                         const int16_t *s_8x8,
                                                         int sstr);
void                oil_imdct12_f64                     (double *d_12,
                                                         const double *s_6);
void                oil_imdct32_f32                     (float *d_32,
                                                         const float *s_32);
void                oil_imdct36_f64                     (double *d_36,
                                                         const double *s_18);
void                oil_mdct12_f64                      (double *d_6,
                                                         const double *s_12);
void                oil_mdct36_f64                      (double *d_18,
                                                         const double *s_36);
void                oil_idct8theora_s16                 (int16_t *d_8,
                                                         int dstr,
                                                         const int16_t *s_8,
                                                         int sstr);
void                oil_idct8x8lim10_f64                (double *d_8x8,
                                                         int dstr,
                                                         const double *s_8x8,
                                                         int sstr);
void                oil_idct8x8lim10_s16                (int16_t *d_8x8,
                                                         int dstr,
                                                         const int16_t *s_8x8,
                                                         int sstr);
void                oil_idct8x8theora_s16               (int16_t *d_8x8,
                                                         int dstr,
                                                         const int16_t *s_8x8,
                                                         int sstr);

Description

Details

oil_dct36_f32 ()

void                oil_dct36_f32                       (float *d_36,
                                                         int dstr,
                                                         const float *s_36,
                                                         int sstr);

FIXME: This function is broken.

d_36 :

dstr :

s_36 :

sstr :


oil_fdct8_f64 ()

void                oil_fdct8_f64                       (double *d_8,
                                                         const double *s_8,
                                                         int dstr,
                                                         int sstr);

Performs a Forward Discrete Cosine Transform on s_8 and places the result in d_8.

d_8 :

s_8 :

dstr :

sstr :


oil_fdct8x8_f64 ()

void                oil_fdct8x8_f64                     (double *d_8x8,
                                                         int dstr,
                                                         const double *s_8x8,
                                                         int sstr);

Performs a 2-D Forward Discrete Cosine Transform on s_8x8 and places the result in d_8x8.

d_8x8 :

dstr :

s_8x8 :

sstr :


oil_fdct8x8s_s16 ()

void                oil_fdct8x8s_s16                    (int16_t *d_8x8,
                                                         int ds,
                                                         const int16_t *s_8x8,
                                                         int ss);

Performs a 2-D Forward Discrete Cosine Transform on s_8x8 and places the result in d_8x8.

This function uses an alternate scaling used by RTjpeg.

d_8x8 :

ds :

s_8x8 :

ss :


oil_idct8_f64 ()

void                oil_idct8_f64                       (double *d_8,
                                                         int dstr,
                                                         const double *s_8,
                                                         int sstr);

Performs a Inverse Discrete Cosine Transform on s_8 and places the result in d_8.

d_8 :

dstr :

s_8 :

sstr :


oil_idct8x8_f64 ()

void                oil_idct8x8_f64                     (double *d_8x8,
                                                         int dstr,
                                                         const double *s_8x8,
                                                         int sstr);

Performs a 2-D Inverse Discrete Cosine Transform on s_8x8 and places the result in d_8x8.

d_8x8 :

dstr :

s_8x8 :

sstr :


oil_idct8x8_s16 ()

void                oil_idct8x8_s16                     (int16_t *d_8x8,
                                                         int dstr,
                                                         const int16_t *s_8x8,
                                                         int sstr);

Performs a limited 2-D Inverse Discrete Cosine Transform on s_8x8 and places the result in d_8x8.

d_8x8 :

dstr :

s_8x8 :

sstr :


oil_imdct12_f64 ()

void                oil_imdct12_f64                     (double *d_12,
                                                         const double *s_6);

Performs a Inverse Modified Discrete Cosine Transform (IMDCT) on the source array s_6 and places the result in d_12.

d_12 :

s_6 :


oil_imdct32_f32 ()

void                oil_imdct32_f32                     (float *d_32,
                                                         const float *s_32);

Performs a Inverse Modified Discrete Cosine Transform (IMDCT) on the source array s_32 and places the result in d_32.

d_32 :

s_32 :


oil_imdct36_f64 ()

void                oil_imdct36_f64                     (double *d_36,
                                                         const double *s_18);

Performs a Inverse Modified Discrete Cosine Transform (IMDCT) on the source array s_18 and places the result in d_36.

d_36 :

s_18 :


oil_mdct12_f64 ()

void                oil_mdct12_f64                      (double *d_6,
                                                         const double *s_12);

Performs a Modified Discrete Cosine Transform (MDCT) on the source array s_12 and places the result in d_6.

d_6 :

s_12 :


oil_mdct36_f64 ()

void                oil_mdct36_f64                      (double *d_18,
                                                         const double *s_36);

Performs a Modified Discrete Cosine Transform (MDCT) on the source array s_36 and places the result in d_18.

d_18 :

s_36 :


oil_idct8theora_s16 ()

void                oil_idct8theora_s16                 (int16_t *d_8,
                                                         int dstr,
                                                         const int16_t *s_8,
                                                         int sstr);

Performs a Inverse Discrete Cosine Transform on s_8 and places the result in d_8, as defined by the Theora specification.

d_8 :

dstr :

s_8 :

sstr :


oil_idct8x8lim10_f64 ()

void                oil_idct8x8lim10_f64                (double *d_8x8,
                                                         int dstr,
                                                         const double *s_8x8,
                                                         int sstr);

Performs a 2-D Inverse Discrete Cosine Transform on s_8x8 and places the result in d_8x8.

d_8x8 :

dstr :

s_8x8 :

sstr :


oil_idct8x8lim10_s16 ()

void                oil_idct8x8lim10_s16                (int16_t *d_8x8,
                                                         int dstr,
                                                         const int16_t *s_8x8,
                                                         int sstr);

Performs a limited 2-D Inverse Discrete Cosine Transform on s_8x8 and places the result in d_8x8. The source 8x8 block must be non-zero only in the 10 lowest-order components.

d_8x8 :

dstr :

s_8x8 :

sstr :


oil_idct8x8theora_s16 ()

void                oil_idct8x8theora_s16               (int16_t *d_8x8,
                                                         int dstr,
                                                         const int16_t *s_8x8,
                                                         int sstr);

Performs a Inverse Discrete Cosine Transform on s_8x8 and places the result in d_8x8, as defined by the Theora specification.

d_8x8 :

dstr :

s_8x8 :

sstr :