| // Auto-generated file. Do not edit! |
| // Template: src/s8-ibilinear/scalar.c.in |
| // Generator: tools/xngen |
| // |
| // Copyright 2021 Google LLC |
| // |
| // This source code is licensed under the BSD-style license found in the |
| // LICENSE file in the root directory of this source tree. |
| |
| #include <assert.h> |
| |
| #include <xnnpack/ibilinear.h> |
| #include <xnnpack/math.h> |
| |
| |
| void xnn_u8_ibilinear_ukernel__scalar_c1( |
| size_t output_pixels, |
| size_t channels, |
| const uint8_t**restrict input, |
| size_t input_offset, |
| const int16_t*restrict weights, |
| uint8_t*restrict output, |
| size_t output_increment) |
| { |
| assert(output_pixels != 0); |
| assert(channels != 0); |
| |
| do { |
| const uint8_t* i0 = (const uint8_t*) ((uintptr_t) input[0] + input_offset); |
| const uint8_t* i1 = (const uint8_t*) ((uintptr_t) input[1] + input_offset); |
| const uint8_t* i2 = (const uint8_t*) ((uintptr_t) input[2] + input_offset); |
| const uint8_t* i3 = (const uint8_t*) ((uintptr_t) input[3] + input_offset); |
| input += 4; |
| |
| const int32_t valphah = (int32_t) (uint32_t) (uint16_t) weights[0]; |
| const int32_t valphav = (int32_t) (uint32_t) (uint16_t) weights[1]; |
| weights += 2; |
| |
| const int32_t vrounding = INT32_C(0x00200000); |
| |
| size_t c = channels; |
| do { |
| const int32_t vtl = (int32_t) *i0++; |
| const int32_t vtr = (int32_t) *i1++; |
| const int32_t vbl = (int32_t) *i2++; |
| const int32_t vbr = (int32_t) *i3++; |
| |
| const int32_t vtd = vtr - vtl; |
| const int32_t vbd = vbr - vbl; |
| |
| const int32_t vt = (vtl << 11) + vtd * valphah; |
| const int32_t vb = (vbl << 11) + vbd * valphah; |
| |
| const int32_t vd = vb - vt; |
| |
| const int32_t vacc = (vt << 11) + vd * valphav; |
| |
| const int32_t vo = asr_s32(vacc + vrounding, 22); |
| |
| *output++ = vo; |
| |
| c -= sizeof(uint8_t); |
| } while (c != 0); |
| |
| output = (uint8_t*) ((uintptr_t) output + output_increment); |
| } while (--output_pixels != 0); |
| } |