| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * Not a Contribution, Apache license notifications and license are retained |
| * for attribution purposes only. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <stdint.h> |
| #include <malloc.h> |
| #include <arm_neon.h> |
| #include "hwc_delta_panel.h" |
| |
| #define BYTE_PER_PIXEL 4 |
| #define X_LAST 392 |
| |
| const static int X_START_TABLE[] = {0,176,168,160,152,152,144,144,136,136,136,128,128,128,120, |
| 120,120,112,112,112,112,104,104,104,104,96,96,96,96,96,88, |
| 88,88,88,88,80,80,80,80,80,80,72,72,72,72,72,72,64,64,64,64, |
| 64,64,64,64,56,56,56,56,56,56,56,48,48,48,48,48,48,48,48,48, |
| 40,40,40,40,40,40,40,40,40,40,32,32,32,32,32,32,32,32,32,32, |
| 32,32,24,24,24,24,24,24,24,24,24,24,24,24,24,16,16,16,16,16, |
| 16,16,16,16,16,16,16,16,16,16,16,16,8,8,8,8,8,8,8,8,8,8,8,8, |
| 8,8,8,8,8,8,8,8,8,8,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8, |
| 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,16,16,16,16,16, |
| 16,16,16,16,16,16,16,16,16,16,16,16,24,24,24,24,24,24,24,24, |
| 24,24,24,24,24,32,32,32,32,32,32,32,32,32,32,32,32,40,40,40, |
| 40,40,40,40,40,40,40,48,48,48,48,48,48,48,48,48,56,56,56,56, |
| 56,56,56,64,64,64,64,64,64,64,64,72,72,72,72,72,72,80,80,80, |
| 80,80,80,88,88,88,88,88,96,96,96,96,96,104,104,104,104,112, |
| 112,112,112,120,120,120,128,128,128,136,136,136,144,144,152, |
| 152,160,168,176}; |
| |
| const static int TABLE_SIZE = sizeof(X_START_TABLE) / sizeof(X_START_TABLE[0]); |
| const static uint8_t MASK[8] = {0xff, 0, 0xff, 0, 0xff, 0, 0xff, 0}; |
| |
| /* |
| * Delta Real Panel Rending - Delta real pixel rending for Wearable device panel. |
| * pImage - Point to head of display image |
| * width - Input image width |
| * height - Input image height |
| */ |
| void deltaPanelRendering(uint8_t *pImage, int width, int height) |
| { |
| int x, y; |
| uint8_t *pData; |
| int byteWidth; |
| uint32_t *pPixelAbove, *pPixelCenter, *pPixelBelow, *pPixelEnd; |
| int64_t diff; |
| int xStart, xEnd; |
| const uint8x8_t MASK_8X8 = vld1_u8(MASK); |
| const uint8x8_t THREE_8X8 = vdup_n_u8(3); |
| |
| byteWidth = width * BYTE_PER_PIXEL; |
| pData = pImage + byteWidth; |
| |
| // center |
| for(y = 1; y < (height - 1) && y < TABLE_SIZE; y++) |
| { |
| xStart = X_START_TABLE[y]; |
| xEnd = X_LAST - X_START_TABLE[y]; |
| pPixelCenter = ((uint32_t*)pData) + xStart; |
| pPixelEnd = ((uint32_t*)pData) + xEnd; |
| pPixelAbove = pPixelCenter - width; |
| pPixelBelow = pPixelCenter + width; |
| |
| // process 8 pixels |
| while (pPixelCenter <= pPixelEnd) |
| { |
| __asm__ __volatile__ ( |
| "vld4.8 {d8-d11}, [%[above]]! \n" |
| "vld4.8 {d12-d15}, [%[below]]! \n" |
| "vld4.8 {d16-d19}, [%[center]] \n" |
| #ifdef DELTA_PANEL_R |
| "vbit d12, d8, %[mask] \n" |
| #endif |
| #ifdef DELTA_PANEL_G |
| "vbit d13, d9, %[mask] \n" |
| #endif |
| #ifdef DELTA_PANEL_B |
| "vbit d14, d10, %[mask] \n" |
| #endif |
| #ifdef DELTA_PANEL_R |
| "vmovl.u8 q0, d12 \n" |
| #endif |
| #ifdef DELTA_PANEL_G |
| "vmovl.u8 q1, d13 \n" |
| #endif |
| #ifdef DELTA_PANEL_B |
| "vmovl.u8 q2, d14 \n" |
| #endif |
| #ifdef DELTA_PANEL_R |
| "vmlal.u8 q0, d16, %[three] \n" |
| #endif |
| #ifdef DELTA_PANEL_G |
| "vmlal.u8 q1, d17, %[three] \n" |
| #endif |
| #ifdef DELTA_PANEL_B |
| "vmlal.u8 q2, d18, %[three] \n" |
| #endif |
| #ifdef DELTA_PANEL_R |
| "vshrn.i16 d16, q0, #2 \n" |
| #endif |
| #ifdef DELTA_PANEL_G |
| "vshrn.i16 d17, q1, #2 \n" |
| #endif |
| #ifdef DELTA_PANEL_B |
| "vshrn.i16 d18, q2, #2 \n" |
| #endif |
| "vst4.8 {d16-d19}, [%[center]]! \n" |
| : [above]"+&r"(pPixelAbove) |
| , [below]"+&r"(pPixelBelow) |
| , [center]"+&r"(pPixelCenter) |
| : [mask]"w"(MASK_8X8) |
| , [three]"w"(THREE_8X8) |
| : "d8", "d9", "d10", "d11" |
| , "d12", "d13", "d14", "d15" |
| , "d16", "d17", "d18", "d19" |
| , "q0", "q1", "q2", "memory"); |
| } |
| |
| pData += byteWidth; |
| } |
| } |
