Move utility functions to a common library

This change creates a library that contains utility functions commonly
used in different EVS versions.

Bug: 13542573
Test: VTS
Change-Id: Ica8f5e6228d7d4b1426d8cc9cd2c570d6b584897
Signed-off-by: Changyeon Jo <changyeon@google.com>
diff --git a/automotive/evs/1.0/default/android.hardware.automotive.evs@1.0-service.rc b/automotive/evs/1.0/default/android.hardware.automotive.evs@1.0-service.rc
index 117c249..8dcd969 100644
--- a/automotive/evs/1.0/default/android.hardware.automotive.evs@1.0-service.rc
+++ b/automotive/evs/1.0/default/android.hardware.automotive.evs@1.0-service.rc
@@ -2,3 +2,4 @@
     class hal
     user automotive_evs
     group automotive_evs
+    disabled # do not start automatically
diff --git a/automotive/evs/1.0/vts/functional/Android.bp b/automotive/evs/1.0/vts/functional/Android.bp
index 2ef33fd..8988bfd 100644
--- a/automotive/evs/1.0/vts/functional/Android.bp
+++ b/automotive/evs/1.0/vts/functional/Android.bp
@@ -19,13 +19,15 @@
     srcs: [
         "VtsHalEvsV1_0TargetTest.cpp",
         "FrameHandler.cpp",
-        "FormatConvert.cpp"
     ],
     defaults: ["VtsHalTargetTestDefaults"],
     shared_libs: [
         "libui",
     ],
-    static_libs: ["android.hardware.automotive.evs@1.0"],
+    static_libs: [
+        "android.hardware.automotive.evs@1.0",
+        "android.hardware.automotive.evs@common-default-lib",
+    ],
     test_suites: ["general-tests"],
     cflags: [
         "-O0",
diff --git a/automotive/evs/1.0/vts/functional/FormatConvert.cpp b/automotive/evs/1.0/vts/functional/FormatConvert.cpp
deleted file mode 100644
index 3d82d32..0000000
--- a/automotive/evs/1.0/vts/functional/FormatConvert.cpp
+++ /dev/null
@@ -1,206 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * 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.
- */
-
-#define LOG_TAG "VtsHalEvsTest"
-
-#include "FormatConvert.h"
-
-
-// Round up to the nearest multiple of the given alignment value
-template<unsigned alignment>
-int align(int value) {
-    static_assert((alignment && !(alignment & (alignment - 1))),
-                  "alignment must be a power of 2");
-
-    unsigned mask = alignment - 1;
-    return (value + mask) & ~mask;
-}
-
-
-// Limit the given value to the provided range.  :)
-static inline float clamp(float v, float min, float max) {
-    if (v < min) return min;
-    if (v > max) return max;
-    return v;
-}
-
-
-static uint32_t yuvToRgbx(const unsigned char Y, const unsigned char Uin, const unsigned char Vin,
-                          bool bgrxFormat = false) {
-    // Don't use this if you want to see the best performance.  :)
-    // Better to do this in a pixel shader if we really have to, but on actual
-    // embedded hardware we expect to be able to texture directly from the YUV data
-    float U = Uin - 128.0f;
-    float V = Vin - 128.0f;
-
-    float Rf = Y + 1.140f*V;
-    float Gf = Y - 0.395f*U - 0.581f*V;
-    float Bf = Y + 2.032f*U;
-    unsigned char R = (unsigned char)clamp(Rf, 0.0f, 255.0f);
-    unsigned char G = (unsigned char)clamp(Gf, 0.0f, 255.0f);
-    unsigned char B = (unsigned char)clamp(Bf, 0.0f, 255.0f);
-
-    if (!bgrxFormat) {
-        return (R      ) |
-               (G <<  8) |
-               (B << 16) |
-               0xFF000000;  // Fill the alpha channel with ones
-    } else {
-        return (R << 16) |
-               (G <<  8) |
-               (B      ) |
-               0xFF000000;  // Fill the alpha channel with ones
-    }
-}
-
-
-void copyNV21toRGB32(unsigned width, unsigned height,
-                     uint8_t* src,
-                     uint32_t* dst, unsigned dstStridePixels,
-                     bool bgrxFormat)
-{
-    // The NV21 format provides a Y array of 8bit values, followed by a 1/2 x 1/2 interleaved
-    // U/V array.  It assumes an even width and height for the overall image, and a horizontal
-    // stride that is an even multiple of 16 bytes for both the Y and UV arrays.
-    unsigned strideLum = align<16>(width);
-    unsigned sizeY = strideLum * height;
-    unsigned strideColor = strideLum;   // 1/2 the samples, but two interleaved channels
-    unsigned offsetUV = sizeY;
-
-    uint8_t* srcY = src;
-    uint8_t* srcUV = src+offsetUV;
-
-    for (unsigned r = 0; r < height; r++) {
-        // Note that we're walking the same UV row twice for even/odd luminance rows
-        uint8_t* rowY  = srcY  + r*strideLum;
-        uint8_t* rowUV = srcUV + (r/2 * strideColor);
-
-        uint32_t* rowDest = dst + r*dstStridePixels;
-
-        for (unsigned c = 0; c < width; c++) {
-            unsigned uCol = (c & ~1);   // uCol is always even and repeats 1:2 with Y values
-            unsigned vCol = uCol | 1;   // vCol is always odd
-            rowDest[c] = yuvToRgbx(rowY[c], rowUV[uCol], rowUV[vCol], bgrxFormat);
-        }
-    }
-}
-
-
-void copyYV12toRGB32(unsigned width, unsigned height,
-                     uint8_t* src,
-                     uint32_t* dst, unsigned dstStridePixels,
-                     bool bgrxFormat)
-{
-    // The YV12 format provides a Y array of 8bit values, followed by a 1/2 x 1/2 U array, followed
-    // by another 1/2 x 1/2 V array.  It assumes an even width and height for the overall image,
-    // and a horizontal stride that is an even multiple of 16 bytes for each of the Y, U,
-    // and V arrays.
-    unsigned strideLum = align<16>(width);
-    unsigned sizeY = strideLum * height;
-    unsigned strideColor = align<16>(strideLum/2);
-    unsigned sizeColor = strideColor * height/2;
-    unsigned offsetU = sizeY;
-    unsigned offsetV = sizeY + sizeColor;
-
-    uint8_t* srcY = src;
-    uint8_t* srcU = src+offsetU;
-    uint8_t* srcV = src+offsetV;
-
-    for (unsigned r = 0; r < height; r++) {
-        // Note that we're walking the same U and V rows twice for even/odd luminance rows
-        uint8_t* rowY = srcY + r*strideLum;
-        uint8_t* rowU = srcU + (r/2 * strideColor);
-        uint8_t* rowV = srcV + (r/2 * strideColor);
-
-        uint32_t* rowDest = dst + r*dstStridePixels;
-
-        for (unsigned c = 0; c < width; c++) {
-            rowDest[c] = yuvToRgbx(rowY[c], rowU[c], rowV[c], bgrxFormat);
-        }
-    }
-}
-
-
-void copyYUYVtoRGB32(unsigned width, unsigned height,
-                     uint8_t* src, unsigned srcStridePixels,
-                     uint32_t* dst, unsigned dstStridePixels,
-                     bool bgrxFormat)
-{
-    uint32_t* srcWords = (uint32_t*)src;
-
-    const int srcRowPadding32 = srcStridePixels/2 - width/2;  // 2 bytes per pixel, 4 bytes per word
-    const int dstRowPadding32 = dstStridePixels   - width;    // 4 bytes per pixel, 4 bytes per word
-
-    for (unsigned r = 0; r < height; r++) {
-        for (unsigned c = 0; c < width/2; c++) {
-            // Note:  we're walking two pixels at a time here (even/odd)
-            uint32_t srcPixel = *srcWords++;
-
-            uint8_t Y1 = (srcPixel)       & 0xFF;
-            uint8_t U  = (srcPixel >> 8)  & 0xFF;
-            uint8_t Y2 = (srcPixel >> 16) & 0xFF;
-            uint8_t V  = (srcPixel >> 24) & 0xFF;
-
-            // On the RGB output, we're writing one pixel at a time
-            *(dst+0) = yuvToRgbx(Y1, U, V, bgrxFormat);
-            *(dst+1) = yuvToRgbx(Y2, U, V, bgrxFormat);
-            dst += 2;
-        }
-
-        // Skip over any extra data or end of row alignment padding
-        srcWords += srcRowPadding32;
-        dst += dstRowPadding32;
-    }
-}
-
-
-void copyNV21toBGR32(unsigned width, unsigned height,
-                     uint8_t* src,
-                     uint32_t* dst, unsigned dstStridePixels)
-{
-    return copyNV21toRGB32(width, height, src, dst, dstStridePixels, true);
-}
-
-
-void copyYV12toBGR32(unsigned width, unsigned height,
-                     uint8_t* src,
-                     uint32_t* dst, unsigned dstStridePixels)
-{
-    return copyYV12toRGB32(width, height, src, dst, dstStridePixels, true);
-}
-
-
-void copyYUYVtoBGR32(unsigned width, unsigned height,
-                     uint8_t* src, unsigned srcStridePixels,
-                     uint32_t* dst, unsigned dstStridePixels)
-{
-    return copyYUYVtoRGB32(width, height, src, srcStridePixels, dst, dstStridePixels, true);
-}
-
-
-void copyMatchedInterleavedFormats(unsigned width, unsigned height,
-                                   void* src, unsigned srcStridePixels,
-                                   void* dst, unsigned dstStridePixels,
-                                   unsigned pixelSize) {
-    for (unsigned row = 0; row < height; row++) {
-        // Copy the entire row of pixel data
-        memcpy(dst, src, width * pixelSize);
-
-        // Advance to the next row (keeping in mind that stride here is in units of pixels)
-        src = (uint8_t*)src + srcStridePixels * pixelSize;
-        dst = (uint8_t*)dst + dstStridePixels * pixelSize;
-    }
-}
diff --git a/automotive/evs/1.0/vts/functional/FormatConvert.h b/automotive/evs/1.0/vts/functional/FormatConvert.h
deleted file mode 100644
index 4a94f99..0000000
--- a/automotive/evs/1.0/vts/functional/FormatConvert.h
+++ /dev/null
@@ -1,74 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * 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.
- */
-
-#ifndef EVS_VTS_FORMATCONVERT_H
-#define EVS_VTS_FORMATCONVERT_H
-
-#include <queue>
-#include <stdint.h>
-
-
-// Given an image buffer in NV21 format (HAL_PIXEL_FORMAT_YCRCB_420_SP), output 32bit RGBx/BGRx
-// values.  The NV21 format provides a Y array of 8bit values, followed by a 1/2 x 1/2 interleaved
-// U/V array.  It assumes an even width and height for the overall image, and a horizontal
-// stride that is an even multiple of 16 bytes for both the Y and UV arrays.
-void copyNV21toRGB32(unsigned width, unsigned height,
-                     uint8_t* src,
-                     uint32_t* dst, unsigned dstStridePixels,
-                     bool bgrxFormat = false);
-
-void copyNV21toBGR32(unsigned width, unsigned height,
-                     uint8_t* src,
-                     uint32_t* dst, unsigned dstStridePixels);
-
-
-// Given an image buffer in YV12 format (HAL_PIXEL_FORMAT_YV12), output 32bit RGBx/BGRx values.
-// The YV12 format provides a Y array of 8bit values, followed by a 1/2 x 1/2 U array, followed
-// by another 1/2 x 1/2 V array.  It assumes an even width and height for the overall image,
-// and a horizontal stride that is an even multiple of 16 bytes for each of the Y, U,
-// and V arrays.
-void copyYV12toRGB32(unsigned width, unsigned height,
-                     uint8_t* src,
-                     uint32_t* dst, unsigned dstStridePixels,
-                     bool bgrxFormat = false);
-
-void copyYV12toBGR32(unsigned width, unsigned height,
-                     uint8_t* src,
-                     uint32_t* dst, unsigned dstStridePixels);
-
-// Given an image buffer in YUYV format (HAL_PIXEL_FORMAT_YCBCR_422_I), output 32bit RGBx/BGRx
-// values.  The NV21 format provides a Y array of 8bit values, followed by a 1/2 x 1/2 interleaved
-// U/V array.  It assumes an even width and height for the overall image, and a horizontal
-// stride that is an even multiple of 16 bytes for both the Y and UV arrays.
-void copyYUYVtoRGB32(unsigned width, unsigned height,
-                     uint8_t* src, unsigned srcStrideBytes,
-                     uint32_t* dst, unsigned dstStrideBytes,
-                     bool bgrxFormat = false);
-
-void copyYUYVtoBGR32(unsigned width, unsigned height,
-                     uint8_t* src, unsigned srcStrideBytes,
-                     uint32_t* dst, unsigned dstStrideBytes);
-
-
-// Given an simple rectangular image buffer with an integer number of bytes per pixel,
-// copy the pixel values into a new rectangular buffer (potentially with a different stride).
-// This is typically used to copy RGBx data into an RGBx output buffer.
-void copyMatchedInterleavedFormats(unsigned width, unsigned height,
-                                   void* src, unsigned srcStridePixels,
-                                   void* dst, unsigned dstStridePixels,
-                                   unsigned pixelSize);
-
-#endif // EVS_VTS_FORMATCONVERT_H
diff --git a/automotive/evs/1.0/vts/functional/FrameHandler.cpp b/automotive/evs/1.0/vts/functional/FrameHandler.cpp
index bc3790f..6a01a44 100644
--- a/automotive/evs/1.0/vts/functional/FrameHandler.cpp
+++ b/automotive/evs/1.0/vts/functional/FrameHandler.cpp
@@ -240,46 +240,47 @@
     tgt->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, (void**)&tgtPixels);
 
     if (srcPixels && tgtPixels) {
+        using namespace ::android::hardware::automotive::evs::common;
         if (tgtBuffer.format == HAL_PIXEL_FORMAT_RGBA_8888) {
             if (srcBuffer.format == HAL_PIXEL_FORMAT_YCRCB_420_SP) {   // 420SP == NV21
-                copyNV21toRGB32(width, height,
-                                srcPixels,
-                                tgtPixels, tgtBuffer.stride);
+                Utils::copyNV21toRGB32(width, height,
+                                       srcPixels,
+                                       tgtPixels, tgtBuffer.stride);
             } else if (srcBuffer.format == HAL_PIXEL_FORMAT_YV12) { // YUV_420P == YV12
-                copyYV12toRGB32(width, height,
-                                srcPixels,
-                                tgtPixels, tgtBuffer.stride);
+                Utils::copyYV12toRGB32(width, height,
+                                       srcPixels,
+                                       tgtPixels, tgtBuffer.stride);
             } else if (srcBuffer.format == HAL_PIXEL_FORMAT_YCBCR_422_I) { // YUYV
-                copyYUYVtoRGB32(width, height,
-                                srcPixels, srcBuffer.stride,
-                                tgtPixels, tgtBuffer.stride);
+                Utils::copyYUYVtoRGB32(width, height,
+                                       srcPixels, srcBuffer.stride,
+                                       tgtPixels, tgtBuffer.stride);
             } else if (srcBuffer.format == tgtBuffer.format) {  // 32bit RGBA
-                copyMatchedInterleavedFormats(width, height,
-                                              srcPixels, srcBuffer.stride,
-                                              tgtPixels, tgtBuffer.stride,
-                                              tgtBuffer.pixelSize);
+                Utils::copyMatchedInterleavedFormats(width, height,
+                                                     srcPixels, srcBuffer.stride,
+                                                     tgtPixels, tgtBuffer.stride,
+                                                     tgtBuffer.pixelSize);
             } else {
                 ALOGE("Camera buffer format is not supported");
                 success = false;
             }
         } else if (tgtBuffer.format == HAL_PIXEL_FORMAT_BGRA_8888) {
             if (srcBuffer.format == HAL_PIXEL_FORMAT_YCRCB_420_SP) {   // 420SP == NV21
-                copyNV21toBGR32(width, height,
-                                srcPixels,
-                                tgtPixels, tgtBuffer.stride);
+                Utils::copyNV21toBGR32(width, height,
+                                       srcPixels,
+                                       tgtPixels, tgtBuffer.stride);
             } else if (srcBuffer.format == HAL_PIXEL_FORMAT_YV12) { // YUV_420P == YV12
-                copyYV12toBGR32(width, height,
-                                srcPixels,
-                                tgtPixels, tgtBuffer.stride);
+                Utils::copyYV12toBGR32(width, height,
+                                       srcPixels,
+                                       tgtPixels, tgtBuffer.stride);
             } else if (srcBuffer.format == HAL_PIXEL_FORMAT_YCBCR_422_I) { // YUYV
-                copyYUYVtoBGR32(width, height,
-                                srcPixels, srcBuffer.stride,
-                                tgtPixels, tgtBuffer.stride);
+                Utils::copyYUYVtoBGR32(width, height,
+                                       srcPixels, srcBuffer.stride,
+                                       tgtPixels, tgtBuffer.stride);
             } else if (srcBuffer.format == tgtBuffer.format) {  // 32bit RGBA
-                copyMatchedInterleavedFormats(width, height,
-                                              srcPixels, srcBuffer.stride,
-                                              tgtPixels, tgtBuffer.stride,
-                                              tgtBuffer.pixelSize);
+                Utils::copyMatchedInterleavedFormats(width, height,
+                                                     srcPixels, srcBuffer.stride,
+                                                     tgtPixels, tgtBuffer.stride,
+                                                     tgtBuffer.pixelSize);
             } else {
                 ALOGE("Camera buffer format is not supported");
                 success = false;