Go to the source code of this file.
Typedefs | |
typedef unsigned char | scale2x_uint8 |
typedef unsigned short | scale2x_uint16 |
typedef unsigned | scale2x_uint32 |
Functions | |
void | scale2x_8_def (scale2x_uint8 *dst0, scale2x_uint8 *dst1, const scale2x_uint8 *src0, const scale2x_uint8 *src1, const scale2x_uint8 *src2, unsigned count) |
Scale by a factor of 2 a row of pixels of 8 bits. | |
void | scale2x_16_def (scale2x_uint16 *dst0, scale2x_uint16 *dst1, const scale2x_uint16 *src0, const scale2x_uint16 *src1, const scale2x_uint16 *src2, unsigned count) |
Scale by a factor of 2 a row of pixels of 16 bits. | |
void | scale2x_32_def (scale2x_uint32 *dst0, scale2x_uint32 *dst1, const scale2x_uint32 *src0, const scale2x_uint32 *src1, const scale2x_uint32 *src2, unsigned count) |
Scale by a factor of 2 a row of pixels of 32 bits. | |
void | scale2x3_8_def (scale2x_uint8 *dst0, scale2x_uint8 *dst1, scale2x_uint8 *dst2, const scale2x_uint8 *src0, const scale2x_uint8 *src1, const scale2x_uint8 *src2, unsigned count) |
Scale by a factor of 2x3 a row of pixels of 8 bits. | |
void | scale2x3_16_def (scale2x_uint16 *dst0, scale2x_uint16 *dst1, scale2x_uint16 *dst2, const scale2x_uint16 *src0, const scale2x_uint16 *src1, const scale2x_uint16 *src2, unsigned count) |
Scale by a factor of 2x3 a row of pixels of 16 bits. | |
void | scale2x3_32_def (scale2x_uint32 *dst0, scale2x_uint32 *dst1, scale2x_uint32 *dst2, const scale2x_uint32 *src0, const scale2x_uint32 *src1, const scale2x_uint32 *src2, unsigned count) |
Scale by a factor of 2x3 a row of pixels of 32 bits. | |
void | scale2x4_8_def (scale2x_uint8 *dst0, scale2x_uint8 *dst1, scale2x_uint8 *dst2, scale2x_uint8 *dst3, const scale2x_uint8 *src0, const scale2x_uint8 *src1, const scale2x_uint8 *src2, unsigned count) |
Scale by a factor of 2x4 a row of pixels of 8 bits. | |
void | scale2x4_16_def (scale2x_uint16 *dst0, scale2x_uint16 *dst1, scale2x_uint16 *dst2, scale2x_uint16 *dst3, const scale2x_uint16 *src0, const scale2x_uint16 *src1, const scale2x_uint16 *src2, unsigned count) |
Scale by a factor of 2x4 a row of pixels of 16 bits. | |
void | scale2x4_32_def (scale2x_uint32 *dst0, scale2x_uint32 *dst1, scale2x_uint32 *dst2, scale2x_uint32 *dst3, const scale2x_uint32 *src0, const scale2x_uint32 *src1, const scale2x_uint32 *src2, unsigned count) |
Scale by a factor of 2x4 a row of pixels of 32 bits. |
typedef unsigned short scale2x_uint16 |
typedef unsigned scale2x_uint32 |
typedef unsigned char scale2x_uint8 |
void scale2x3_16_def | ( | scale2x_uint16 * | dst0, |
scale2x_uint16 * | dst1, | ||
scale2x_uint16 * | dst2, | ||
const scale2x_uint16 * | src0, | ||
const scale2x_uint16 * | src1, | ||
const scale2x_uint16 * | src2, | ||
unsigned | count | ||
) |
Scale by a factor of 2x3 a row of pixels of 16 bits.
void scale2x3_32_def | ( | scale2x_uint32 * | dst0, |
scale2x_uint32 * | dst1, | ||
scale2x_uint32 * | dst2, | ||
const scale2x_uint32 * | src0, | ||
const scale2x_uint32 * | src1, | ||
const scale2x_uint32 * | src2, | ||
unsigned | count | ||
) |
Scale by a factor of 2x3 a row of pixels of 32 bits.
void scale2x3_8_def | ( | scale2x_uint8 * | dst0, |
scale2x_uint8 * | dst1, | ||
scale2x_uint8 * | dst2, | ||
const scale2x_uint8 * | src0, | ||
const scale2x_uint8 * | src1, | ||
const scale2x_uint8 * | src2, | ||
unsigned | count | ||
) |
Scale by a factor of 2x3 a row of pixels of 8 bits.
void scale2x4_16_def | ( | scale2x_uint16 * | dst0, |
scale2x_uint16 * | dst1, | ||
scale2x_uint16 * | dst2, | ||
scale2x_uint16 * | dst3, | ||
const scale2x_uint16 * | src0, | ||
const scale2x_uint16 * | src1, | ||
const scale2x_uint16 * | src2, | ||
unsigned | count | ||
) |
Scale by a factor of 2x4 a row of pixels of 16 bits.
void scale2x4_32_def | ( | scale2x_uint32 * | dst0, |
scale2x_uint32 * | dst1, | ||
scale2x_uint32 * | dst2, | ||
scale2x_uint32 * | dst3, | ||
const scale2x_uint32 * | src0, | ||
const scale2x_uint32 * | src1, | ||
const scale2x_uint32 * | src2, | ||
unsigned | count | ||
) |
Scale by a factor of 2x4 a row of pixels of 32 bits.
void scale2x4_8_def | ( | scale2x_uint8 * | dst0, |
scale2x_uint8 * | dst1, | ||
scale2x_uint8 * | dst2, | ||
scale2x_uint8 * | dst3, | ||
const scale2x_uint8 * | src0, | ||
const scale2x_uint8 * | src1, | ||
const scale2x_uint8 * | src2, | ||
unsigned | count | ||
) |
Scale by a factor of 2x4 a row of pixels of 8 bits.
void scale2x_16_def | ( | scale2x_uint16 * | dst0, |
scale2x_uint16 * | dst1, | ||
const scale2x_uint16 * | src0, | ||
const scale2x_uint16 * | src1, | ||
const scale2x_uint16 * | src2, | ||
unsigned | count | ||
) |
Scale by a factor of 2 a row of pixels of 16 bits.
This function operates like scale2x_8_def() but for 16 bits pixels.
src0 | Pointer at the first pixel of the previous row. |
src1 | Pointer at the first pixel of the current row. |
src2 | Pointer at the first pixel of the next row. |
count | Length in pixels of the src0, src1 and src2 rows. It must be at least 2. |
dst0 | First destination row, double length in pixels. |
dst1 | Second destination row, double length in pixels. |
void scale2x_32_def | ( | scale2x_uint32 * | dst0, |
scale2x_uint32 * | dst1, | ||
const scale2x_uint32 * | src0, | ||
const scale2x_uint32 * | src1, | ||
const scale2x_uint32 * | src2, | ||
unsigned | count | ||
) |
Scale by a factor of 2 a row of pixels of 32 bits.
This function operates like scale2x_8_def() but for 32 bits pixels.
src0 | Pointer at the first pixel of the previous row. |
src1 | Pointer at the first pixel of the current row. |
src2 | Pointer at the first pixel of the next row. |
count | Length in pixels of the src0, src1 and src2 rows. It must be at least 2. |
dst0 | First destination row, double length in pixels. |
dst1 | Second destination row, double length in pixels. |
void scale2x_8_def | ( | scale2x_uint8 * | dst0, |
scale2x_uint8 * | dst1, | ||
const scale2x_uint8 * | src0, | ||
const scale2x_uint8 * | src1, | ||
const scale2x_uint8 * | src2, | ||
unsigned | count | ||
) |
Scale by a factor of 2 a row of pixels of 8 bits.
The function is implemented in C. The pixels over the left and right borders are assumed of the same color of the pixels on the border. Note that the implementation is optimized to write data sequentially to maximize the bandwidth on video memory.
src0 | Pointer at the first pixel of the previous row. |
src1 | Pointer at the first pixel of the current row. |
src2 | Pointer at the first pixel of the next row. |
count | Length in pixels of the src0, src1 and src2 rows. It must be at least 2. |
dst0 | First destination row, double length in pixels. |
dst1 | Second destination row, double length in pixels. |