void copyToDebugSurface() {
if (!mOutputSurface.get()) return;
size_t bufferSize = mLockedBuffer.height * mLockedBuffer.stride *
PIXEL_SIZE;
ANativeWindow_Buffer outBuffer;
ARect outBufferBounds;
mOutputSurface->lock(&outBuffer, &outBufferBounds);
ASSERT_EQ(mLockedBuffer.width, outBuffer.width);
ASSERT_EQ(mLockedBuffer.height, outBuffer.height);
ASSERT_EQ(mLockedBuffer.stride, outBuffer.stride);
if (mLockedBuffer.format == outBuffer.format) {
memcpy(outBuffer.bits, mLockedBuffer.data, bufferSize);
} else {
ASSERT_EQ(mLockedBuffer.format, PIXEL_FORMAT_RGBA_8888);
ASSERT_EQ(mLockedBuffer.dataSpace, HAL_DATASPACE_SRGB);
ASSERT_EQ(outBuffer.format, PIXEL_FORMAT_RGBA_8888);
uint8_t* outPointer = reinterpret_cast<uint8_t*>(outBuffer.bits);
for (int y = 0; y < outBuffer.height; ++y) {
int rowOffset = y * outBuffer.stride; // pixels
for (int x = 0; x < outBuffer.width; ++x) {
int colOffset = (rowOffset + x) * PIXEL_SIZE; // bytes
// RGB are converted
for (int c = 0; c < (PIXEL_SIZE - 1); ++c) {
outPointer[colOffset + c] = srgbToLinear(
mLockedBuffer.data[colOffset + c]);
}
// Alpha isn't converted
outPointer[colOffset + 3] =
mLockedBuffer.data[colOffset + 3];
}
}
}
mOutputSurface->unlockAndPost();
int sleepSeconds = atoi(getenv(SHOW_DEBUG_STRING));
sleep(sleepSeconds);
}
static uint8_t srgbToLinear(uint8_t u) {
float f = u / 255.0f;
return static_cast<uint8_t>(srgbToLinear(f) * 255.0f + 0.5f);
}
