liboilfuncs-copy

liboilfuncs-copy

Synopsis

void                oil_compare_u8                      (uint32_t *d_1,
                                                         const uint8_t *s1,
                                                         const uint8_t *s2,
                                                         int n);
void                oil_copy_u8                         (uint8_t *dest,
                                                         const uint8_t *src,
                                                         int n);
void                oil_permute_f32                     (float *dest,
                                                         int dstr,
                                                         const float *src1,
                                                         int sstr1,
                                                         const int32_t *src2,
                                                         int sstr2,
                                                         int n);
void                oil_permute_f64                     (double *dest,
                                                         int dstr,
                                                         const double *src1,
                                                         int sstr1,
                                                         const int32_t *src2,
                                                         int sstr2,
                                                         int n);
void                oil_permute_s16                     (int16_t *dest,
                                                         int dstr,
                                                         const int16_t *src1,
                                                         int sstr1,
                                                         const int32_t *src2,
                                                         int sstr2,
                                                         int n);
void                oil_permute_s32                     (int32_t *dest,
                                                         int dstr,
                                                         const int32_t *src1,
                                                         int sstr1,
                                                         const int32_t *src2,
                                                         int sstr2,
                                                         int n);
void                oil_permute_s8                      (int8_t *dest,
                                                         int dstr,
                                                         const int8_t *src1,
                                                         int sstr1,
                                                         const int32_t *src2,
                                                         int sstr2,
                                                         int n);
void                oil_permute_u16                     (uint16_t *dest,
                                                         int dstr,
                                                         const uint16_t *src1,
                                                         int sstr1,
                                                         const int32_t *src2,
                                                         int sstr2,
                                                         int n);
void                oil_permute_u32                     (uint32_t *dest,
                                                         int dstr,
                                                         const uint32_t *src1,
                                                         int sstr1,
                                                         const int32_t *src2,
                                                         int sstr2,
                                                         int n);
void                oil_permute_u8                      (uint8_t *dest,
                                                         int dstr,
                                                         const uint8_t *src1,
                                                         int sstr1,
                                                         const int32_t *src2,
                                                         int sstr2,
                                                         int n);
void                oil_splat_u32                       (uint32_t *dest,
                                                         int dstr,
                                                         const uint32_t *s1_1,
                                                         int n);
void                oil_splat_u8                        (uint8_t *dest,
                                                         int dstr,
                                                         const uint8_t *s1_1,
                                                         int n);
void                oil_swab_u16                        (uint16_t *d_n,
                                                         const uint16_t *s_n,
                                                         int n);
void                oil_swab_u32                        (uint32_t *d_n,
                                                         const uint32_t *s_n,
                                                         int n);
void                oil_tablelookup_u8                  (uint8_t *d,
                                                         int ds,
                                                         const uint8_t *s1,
                                                         int ss1,
                                                         const uint8_t *s2_256,
                                                         int ss2,
                                                         int n);
void                oil_testzero_u8                     (uint32_t *d_1,
                                                         const uint8_t *s,
                                                         int n);
void                oil_trans8x8_f64                    (double *d_8x8,
                                                         int ds,
                                                         const double *s_8x8,
                                                         int ss);
void                oil_trans8x8_u16                    (uint16_t *d_8x8,
                                                         int ds,
                                                         const uint16_t *s_8x8,
                                                         int ss);
void                oil_trans8x8_u32                    (uint32_t *d_8x8,
                                                         int ds,
                                                         const uint32_t *s_8x8,
                                                         int ss);
void                oil_trans8x8_u8                     (uint8_t *d_8x8,
                                                         int ds,
                                                         const uint8_t *s_8x8,
                                                         int ss);
void                oil_unzigzag8x8_s16                 (int16_t *d_8x8,
                                                         int ds,
                                                         const int16_t *s_8x8,
                                                         int ss);
void                oil_zigzag8x8_s16                   (int16_t *d_8x8,
                                                         int ds,
                                                         const int16_t *s_8x8,
                                                         int ss);
void                oil_splat_u32_ns                    (uint32_t *dest,
                                                         const uint32_t *s1_1,
                                                         int n);
void                oil_splat_u8_ns                     (uint8_t *dest,
                                                         const uint8_t *s1_1,
                                                         int n);
#define             oil_trans8x8_s16                    (dest, dstr, src, sstr)
#define             oil_memcpy                          (dest,src,n_bytes)

Description

Details

oil_compare_u8 ()

void                oil_compare_u8                      (uint32_t *d_1,
                                                         const uint8_t *s1,
                                                         const uint8_t *s2,
                                                         int n);

Compares two arrays. The index of the first two elements that are unequal is written into dest. If all elements are equal, n is written into dest.

d_1 :

 destination array

s1 :

 source array

s2 :

 source array

n :

 number of elements

oil_copy_u8 ()

void                oil_copy_u8                         (uint8_t *dest,
                                                         const uint8_t *src,
                                                         int n);

Copies from source to destination.

dest :

 destination array

src :

 source array

n :

 number of elements

oil_permute_f32 ()

void                oil_permute_f32                     (float *dest,
                                                         int dstr,
                                                         const float *src1,
                                                         int sstr1,
                                                         const int32_t *src2,
                                                         int sstr2,
                                                         int n);

Copies elements in src1 to dest, permuting them by src2. That is, dest[i] is set to src1[src2[i]]. Values in src2 must be non-negative and less than n.

dest :

dstr :

src1 :

sstr1 :

src2 :

sstr2 :

n :

oil_permute_f64 ()

void                oil_permute_f64                     (double *dest,
                                                         int dstr,
                                                         const double *src1,
                                                         int sstr1,
                                                         const int32_t *src2,
                                                         int sstr2,
                                                         int n);

Copies elements in src1 to dest, permuting them by src2. That is, dest[i] is set to src1[src2[i]]. Values in src2 must be non-negative and less than n.

dest :

dstr :

src1 :

sstr1 :

src2 :

sstr2 :

n :

oil_permute_s16 ()

void                oil_permute_s16                     (int16_t *dest,
                                                         int dstr,
                                                         const int16_t *src1,
                                                         int sstr1,
                                                         const int32_t *src2,
                                                         int sstr2,
                                                         int n);

Copies elements in src1 to dest, permuting them by src2. That is, dest[i] is set to src1[src2[i]]. Values in src2 must be non-negative and less than n.

dest :

dstr :

src1 :

sstr1 :

src2 :

sstr2 :

n :

oil_permute_s32 ()

void                oil_permute_s32                     (int32_t *dest,
                                                         int dstr,
                                                         const int32_t *src1,
                                                         int sstr1,
                                                         const int32_t *src2,
                                                         int sstr2,
                                                         int n);

Copies elements in src1 to dest, permuting them by src2. That is, dest[i] is set to src1[src2[i]]. Values in src2 must be non-negative and less than n.

dest :

dstr :

src1 :

sstr1 :

src2 :

sstr2 :

n :

oil_permute_s8 ()

void                oil_permute_s8                      (int8_t *dest,
                                                         int dstr,
                                                         const int8_t *src1,
                                                         int sstr1,
                                                         const int32_t *src2,
                                                         int sstr2,
                                                         int n);

Copies elements in src1 to dest, permuting them by src2. That is, dest[i] is set to src1[src2[i]]. Values in src2 must be non-negative and less than n.

dest :

dstr :

src1 :

sstr1 :

src2 :

sstr2 :

n :

oil_permute_u16 ()

void                oil_permute_u16                     (uint16_t *dest,
                                                         int dstr,
                                                         const uint16_t *src1,
                                                         int sstr1,
                                                         const int32_t *src2,
                                                         int sstr2,
                                                         int n);

Copies elements in src1 to dest, permuting them by src2. That is, dest[i] is set to src1[src2[i]]. Values in src2 must be non-negative and less than n.

dest :

dstr :

src1 :

sstr1 :

src2 :

sstr2 :

n :

oil_permute_u32 ()

void                oil_permute_u32                     (uint32_t *dest,
                                                         int dstr,
                                                         const uint32_t *src1,
                                                         int sstr1,
                                                         const int32_t *src2,
                                                         int sstr2,
                                                         int n);

Copies elements in src1 to dest, permuting them by src2. That is, dest[i] is set to src1[src2[i]]. Values in src2 must be non-negative and less than n.

dest :

dstr :

src1 :

sstr1 :

src2 :

sstr2 :

n :

oil_permute_u8 ()

void                oil_permute_u8                      (uint8_t *dest,
                                                         int dstr,
                                                         const uint8_t *src1,
                                                         int sstr1,
                                                         const int32_t *src2,
                                                         int sstr2,
                                                         int n);

Copies elements in src1 to dest, permuting them by src2. That is, dest[i] is set to src1[src2[i]]. Values in src2 must be non-negative and less than n.

dest :

dstr :

src1 :

sstr1 :

src2 :

sstr2 :

n :

oil_splat_u32 ()

void                oil_splat_u32                       (uint32_t *dest,
                                                         int dstr,
                                                         const uint32_t *s1_1,
                                                         int n);

Copies the constant source value s1_1 to each element in dest.

dest :

dstr :

s1_1 :

n :

oil_splat_u8 ()

void                oil_splat_u8                        (uint8_t *dest,
                                                         int dstr,
                                                         const uint8_t *s1_1,
                                                         int n);

Copies the constant source value s1_1 to each element in dest.

dest :

dstr :

s1_1 :

n :

oil_swab_u16 ()

void                oil_swab_u16                        (uint16_t *d_n,
                                                         const uint16_t *s_n,
                                                         int n);

Swaps the endianness of values in the source array and places the results in the destination array. The arguments s_n and d_n may be equal.

d_n :

s_n :

 n:

n :

oil_swab_u32 ()

void                oil_swab_u32                        (uint32_t *d_n,
                                                         const uint32_t *s_n,
                                                         int n);

Swaps the endianness of values in the source array and places the results in the destination array. The arguments s_n and d_n may be equal.

d_n :

s_n :

 n:

n :

oil_tablelookup_u8 ()

void                oil_tablelookup_u8                  (uint8_t *d,
                                                         int ds,
                                                         const uint8_t *s1,
                                                         int ss1,
                                                         const uint8_t *s2_256,
                                                         int ss2,
                                                         int n);

Looks up each element in s1 using the lookup table in s2_256, and places the table value in d.

d :

ds :

s1 :

ss1 :

s2_256 :

ss2 :

n :

oil_testzero_u8 ()

void                oil_testzero_u8                     (uint32_t *d_1,
                                                         const uint8_t *s,
                                                         int n);

Tests each element in the source array for equality with 0. The index of the first zero element is written into dest. If all elements are non-zero, n is written into dest.

This function is roughly equivalent to strnlen(). One notable difference is that implementations of this function may legally read past the zero byte.

d_1 :

 destination array

s :

 source array

n :

 number of elements

oil_trans8x8_f64 ()

void                oil_trans8x8_f64                    (double *d_8x8,
                                                         int ds,
                                                         const double *s_8x8,
                                                         int ss);

Performs a matrix transpose the 8x8 block represented by s_8x8 and places the result in d_8x8.

d_8x8 :

ds :

s_8x8 :

ss :

oil_trans8x8_u16 ()

void                oil_trans8x8_u16                    (uint16_t *d_8x8,
                                                         int ds,
                                                         const uint16_t *s_8x8,
                                                         int ss);

Performs a matrix transpose the 8x8 block represented by s_8x8 and places the result in d_8x8. Note that this function can also be used for any type of this size.

d_8x8 :

ds :

s_8x8 :

ss :

oil_trans8x8_u32 ()

void                oil_trans8x8_u32                    (uint32_t *d_8x8,
                                                         int ds,
                                                         const uint32_t *s_8x8,
                                                         int ss);

Performs a matrix transpose the 8x8 block represented by s_8x8 and places the result in d_8x8. Note that this function can also be used for any type of this size.

d_8x8 :

ds :

s_8x8 :

ss :

oil_trans8x8_u8 ()

void                oil_trans8x8_u8                     (uint8_t *d_8x8,
                                                         int ds,
                                                         const uint8_t *s_8x8,
                                                         int ss);

Performs a matrix transpose the 8x8 block represented by s_8x8 and places the result in d_8x8. Note that this function can also be used for any type of this size.

d_8x8 :

ds :

s_8x8 :

ss :

oil_unzigzag8x8_s16 ()

void                oil_unzigzag8x8_s16                 (int16_t *d_8x8,
                                                         int ds,
                                                         const int16_t *s_8x8,
                                                         int ss);

Reorders an 8x8 block to reverse the zig-zag reordering of oil_zigzag8x8_s16.

d_8x8 :

ds :

s_8x8 :

ss :

oil_zigzag8x8_s16 ()

void                oil_zigzag8x8_s16                   (int16_t *d_8x8,
                                                         int ds,
                                                         const int16_t *s_8x8,
                                                         int ss);

Reorders an 8x8 block using a zig-zag pattern. The zig-zag pattern is described in the JPEG specification.

FIXME: describe zigzag pattern

d_8x8 :

ds :

s_8x8 :

ss :

oil_splat_u32_ns ()

void                oil_splat_u32_ns                    (uint32_t *dest,
                                                         const uint32_t *s1_1,
                                                         int n);

Copies the constant source value s1_1 to each element in dest.

dest :

s1_1 :

n :

oil_splat_u8_ns ()

void                oil_splat_u8_ns                     (uint8_t *dest,
                                                         const uint8_t *s1_1,
                                                         int n);

Copies the constant source value s1_1 to each element in dest.

dest :

s1_1 :

n :

oil_trans8x8_s16()

#define             oil_trans8x8_s16(dest, dstr, src, sstr)

Macro wrapping trans8x8_u16().

dest :

dstr :

src :

sstr :

oil_memcpy()

#define             oil_memcpy(dest,src,n_bytes)

Macro that uses oil_copy_u8() to provide an implementation of memcpy(). Note that oil_copy_u8() is optimized for short copies, and may be very slow for large copies compared to alternatives, including the system memcpy().

dest :

src :

n_bytes :
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