drm_hwcomposer: Move hw_module related code out of DrmHwcTwo.* files

... to reduce complexity of DrmHwcTwo class.

Create "hwc2_device" directory that will be later used to fit
all frontend-related code.

Signed-off-by: Roman Stratiienko <roman.o.stratiienko@globallogic.com>
diff --git a/DrmHwcTwo.cpp b/DrmHwcTwo.cpp
index ad4936b..06c1909 100644
--- a/DrmHwcTwo.cpp
+++ b/DrmHwcTwo.cpp
@@ -38,13 +38,7 @@
 
 namespace android {
 
-DrmHwcTwo::DrmHwcTwo() : hwc2_device() {
-  common.tag = HARDWARE_DEVICE_TAG;
-  common.version = HWC_DEVICE_API_VERSION_2_0;
-  common.close = HookDevClose;
-  getCapabilities = HookDevGetCapabilities;
-  getFunction = HookDevGetFunction;
-}
+DrmHwcTwo::DrmHwcTwo() = default;
 
 HWC2::Error DrmHwcTwo::CreateDisplay(hwc2_display_t displ,
                                      HWC2::DisplayType type) {
@@ -1285,320 +1279,4 @@
   }
 }
 
-// static
-int DrmHwcTwo::HookDevClose(hw_device_t *dev) {
-  // NOLINTNEXTLINE (cppcoreguidelines-pro-type-reinterpret-cast): Safe
-  auto *hwc2_dev = reinterpret_cast<hwc2_device_t *>(dev);
-  std::unique_ptr<DrmHwcTwo> ctx(toDrmHwcTwo(hwc2_dev));
-  return 0;
-}
-
-// static
-void DrmHwcTwo::HookDevGetCapabilities(hwc2_device_t * /*dev*/,
-                                       uint32_t *out_count,
-                                       int32_t * /*out_capabilities*/) {
-  *out_count = 0;
-}
-
-// static
-hwc2_function_pointer_t DrmHwcTwo::HookDevGetFunction(
-    struct hwc2_device * /*dev*/, int32_t descriptor) {
-  auto func = static_cast<HWC2::FunctionDescriptor>(descriptor);
-  switch (func) {
-    // Device functions
-    case HWC2::FunctionDescriptor::CreateVirtualDisplay:
-      return ToHook<HWC2_PFN_CREATE_VIRTUAL_DISPLAY>(
-          DeviceHook<int32_t, decltype(&DrmHwcTwo::CreateVirtualDisplay),
-                     &DrmHwcTwo::CreateVirtualDisplay, uint32_t, uint32_t,
-                     int32_t *, hwc2_display_t *>);
-    case HWC2::FunctionDescriptor::DestroyVirtualDisplay:
-      return ToHook<HWC2_PFN_DESTROY_VIRTUAL_DISPLAY>(
-          DeviceHook<int32_t, decltype(&DrmHwcTwo::DestroyVirtualDisplay),
-                     &DrmHwcTwo::DestroyVirtualDisplay, hwc2_display_t>);
-    case HWC2::FunctionDescriptor::Dump:
-      return ToHook<HWC2_PFN_DUMP>(
-          DeviceHook<void, decltype(&DrmHwcTwo::Dump), &DrmHwcTwo::Dump,
-                     uint32_t *, char *>);
-    case HWC2::FunctionDescriptor::GetMaxVirtualDisplayCount:
-      return ToHook<HWC2_PFN_GET_MAX_VIRTUAL_DISPLAY_COUNT>(
-          DeviceHook<uint32_t, decltype(&DrmHwcTwo::GetMaxVirtualDisplayCount),
-                     &DrmHwcTwo::GetMaxVirtualDisplayCount>);
-    case HWC2::FunctionDescriptor::RegisterCallback:
-      return ToHook<HWC2_PFN_REGISTER_CALLBACK>(
-          DeviceHook<int32_t, decltype(&DrmHwcTwo::RegisterCallback),
-                     &DrmHwcTwo::RegisterCallback, int32_t,
-                     hwc2_callback_data_t, hwc2_function_pointer_t>);
-
-    // Display functions
-    case HWC2::FunctionDescriptor::AcceptDisplayChanges:
-      return ToHook<HWC2_PFN_ACCEPT_DISPLAY_CHANGES>(
-          DisplayHook<decltype(&HwcDisplay::AcceptDisplayChanges),
-                      &HwcDisplay::AcceptDisplayChanges>);
-    case HWC2::FunctionDescriptor::CreateLayer:
-      return ToHook<HWC2_PFN_CREATE_LAYER>(
-          DisplayHook<decltype(&HwcDisplay::CreateLayer),
-                      &HwcDisplay::CreateLayer, hwc2_layer_t *>);
-    case HWC2::FunctionDescriptor::DestroyLayer:
-      return ToHook<HWC2_PFN_DESTROY_LAYER>(
-          DisplayHook<decltype(&HwcDisplay::DestroyLayer),
-                      &HwcDisplay::DestroyLayer, hwc2_layer_t>);
-    case HWC2::FunctionDescriptor::GetActiveConfig:
-      return ToHook<HWC2_PFN_GET_ACTIVE_CONFIG>(
-          DisplayHook<decltype(&HwcDisplay::GetActiveConfig),
-                      &HwcDisplay::GetActiveConfig, hwc2_config_t *>);
-    case HWC2::FunctionDescriptor::GetChangedCompositionTypes:
-      return ToHook<HWC2_PFN_GET_CHANGED_COMPOSITION_TYPES>(
-          DisplayHook<decltype(&HwcDisplay::GetChangedCompositionTypes),
-                      &HwcDisplay::GetChangedCompositionTypes, uint32_t *,
-                      hwc2_layer_t *, int32_t *>);
-    case HWC2::FunctionDescriptor::GetClientTargetSupport:
-      return ToHook<HWC2_PFN_GET_CLIENT_TARGET_SUPPORT>(
-          DisplayHook<decltype(&HwcDisplay::GetClientTargetSupport),
-                      &HwcDisplay::GetClientTargetSupport, uint32_t, uint32_t,
-                      int32_t, int32_t>);
-    case HWC2::FunctionDescriptor::GetColorModes:
-      return ToHook<HWC2_PFN_GET_COLOR_MODES>(
-          DisplayHook<decltype(&HwcDisplay::GetColorModes),
-                      &HwcDisplay::GetColorModes, uint32_t *, int32_t *>);
-    case HWC2::FunctionDescriptor::GetDisplayAttribute:
-      return ToHook<HWC2_PFN_GET_DISPLAY_ATTRIBUTE>(
-          DisplayHook<decltype(&HwcDisplay::GetDisplayAttribute),
-                      &HwcDisplay::GetDisplayAttribute, hwc2_config_t, int32_t,
-                      int32_t *>);
-    case HWC2::FunctionDescriptor::GetDisplayConfigs:
-      return ToHook<HWC2_PFN_GET_DISPLAY_CONFIGS>(
-          DisplayHook<decltype(&HwcDisplay::GetDisplayConfigs),
-                      &HwcDisplay::GetDisplayConfigs, uint32_t *,
-                      hwc2_config_t *>);
-    case HWC2::FunctionDescriptor::GetDisplayName:
-      return ToHook<HWC2_PFN_GET_DISPLAY_NAME>(
-          DisplayHook<decltype(&HwcDisplay::GetDisplayName),
-                      &HwcDisplay::GetDisplayName, uint32_t *, char *>);
-    case HWC2::FunctionDescriptor::GetDisplayRequests:
-      return ToHook<HWC2_PFN_GET_DISPLAY_REQUESTS>(
-          DisplayHook<decltype(&HwcDisplay::GetDisplayRequests),
-                      &HwcDisplay::GetDisplayRequests, int32_t *, uint32_t *,
-                      hwc2_layer_t *, int32_t *>);
-    case HWC2::FunctionDescriptor::GetDisplayType:
-      return ToHook<HWC2_PFN_GET_DISPLAY_TYPE>(
-          DisplayHook<decltype(&HwcDisplay::GetDisplayType),
-                      &HwcDisplay::GetDisplayType, int32_t *>);
-    case HWC2::FunctionDescriptor::GetDozeSupport:
-      return ToHook<HWC2_PFN_GET_DOZE_SUPPORT>(
-          DisplayHook<decltype(&HwcDisplay::GetDozeSupport),
-                      &HwcDisplay::GetDozeSupport, int32_t *>);
-    case HWC2::FunctionDescriptor::GetHdrCapabilities:
-      return ToHook<HWC2_PFN_GET_HDR_CAPABILITIES>(
-          DisplayHook<decltype(&HwcDisplay::GetHdrCapabilities),
-                      &HwcDisplay::GetHdrCapabilities, uint32_t *, int32_t *,
-                      float *, float *, float *>);
-    case HWC2::FunctionDescriptor::GetReleaseFences:
-      return ToHook<HWC2_PFN_GET_RELEASE_FENCES>(
-          DisplayHook<decltype(&HwcDisplay::GetReleaseFences),
-                      &HwcDisplay::GetReleaseFences, uint32_t *, hwc2_layer_t *,
-                      int32_t *>);
-    case HWC2::FunctionDescriptor::PresentDisplay:
-      return ToHook<HWC2_PFN_PRESENT_DISPLAY>(
-          DisplayHook<decltype(&HwcDisplay::PresentDisplay),
-                      &HwcDisplay::PresentDisplay, int32_t *>);
-    case HWC2::FunctionDescriptor::SetActiveConfig:
-      return ToHook<HWC2_PFN_SET_ACTIVE_CONFIG>(
-          DisplayHook<decltype(&HwcDisplay::SetActiveConfig),
-                      &HwcDisplay::SetActiveConfig, hwc2_config_t>);
-    case HWC2::FunctionDescriptor::SetClientTarget:
-      return ToHook<HWC2_PFN_SET_CLIENT_TARGET>(
-          DisplayHook<decltype(&HwcDisplay::SetClientTarget),
-                      &HwcDisplay::SetClientTarget, buffer_handle_t, int32_t,
-                      int32_t, hwc_region_t>);
-    case HWC2::FunctionDescriptor::SetColorMode:
-      return ToHook<HWC2_PFN_SET_COLOR_MODE>(
-          DisplayHook<decltype(&HwcDisplay::SetColorMode),
-                      &HwcDisplay::SetColorMode, int32_t>);
-    case HWC2::FunctionDescriptor::SetColorTransform:
-      return ToHook<HWC2_PFN_SET_COLOR_TRANSFORM>(
-          DisplayHook<decltype(&HwcDisplay::SetColorTransform),
-                      &HwcDisplay::SetColorTransform, const float *, int32_t>);
-    case HWC2::FunctionDescriptor::SetOutputBuffer:
-      return ToHook<HWC2_PFN_SET_OUTPUT_BUFFER>(
-          DisplayHook<decltype(&HwcDisplay::SetOutputBuffer),
-                      &HwcDisplay::SetOutputBuffer, buffer_handle_t, int32_t>);
-    case HWC2::FunctionDescriptor::SetPowerMode:
-      return ToHook<HWC2_PFN_SET_POWER_MODE>(
-          DisplayHook<decltype(&HwcDisplay::SetPowerMode),
-                      &HwcDisplay::SetPowerMode, int32_t>);
-    case HWC2::FunctionDescriptor::SetVsyncEnabled:
-      return ToHook<HWC2_PFN_SET_VSYNC_ENABLED>(
-          DisplayHook<decltype(&HwcDisplay::SetVsyncEnabled),
-                      &HwcDisplay::SetVsyncEnabled, int32_t>);
-    case HWC2::FunctionDescriptor::ValidateDisplay:
-      return ToHook<HWC2_PFN_VALIDATE_DISPLAY>(
-          DisplayHook<decltype(&HwcDisplay::ValidateDisplay),
-                      &HwcDisplay::ValidateDisplay, uint32_t *, uint32_t *>);
-#if PLATFORM_SDK_VERSION > 27
-    case HWC2::FunctionDescriptor::GetRenderIntents:
-      return ToHook<HWC2_PFN_GET_RENDER_INTENTS>(
-          DisplayHook<decltype(&HwcDisplay::GetRenderIntents),
-                      &HwcDisplay::GetRenderIntents, int32_t, uint32_t *,
-                      int32_t *>);
-    case HWC2::FunctionDescriptor::SetColorModeWithRenderIntent:
-      return ToHook<HWC2_PFN_SET_COLOR_MODE_WITH_RENDER_INTENT>(
-          DisplayHook<decltype(&HwcDisplay::SetColorModeWithIntent),
-                      &HwcDisplay::SetColorModeWithIntent, int32_t, int32_t>);
-#endif
-#if PLATFORM_SDK_VERSION > 28
-    case HWC2::FunctionDescriptor::GetDisplayIdentificationData:
-      return ToHook<HWC2_PFN_GET_DISPLAY_IDENTIFICATION_DATA>(
-          DisplayHook<decltype(&HwcDisplay::GetDisplayIdentificationData),
-                      &HwcDisplay::GetDisplayIdentificationData, uint8_t *,
-                      uint32_t *, uint8_t *>);
-    case HWC2::FunctionDescriptor::GetDisplayCapabilities:
-      return ToHook<HWC2_PFN_GET_DISPLAY_CAPABILITIES>(
-          DisplayHook<decltype(&HwcDisplay::GetDisplayCapabilities),
-                      &HwcDisplay::GetDisplayCapabilities, uint32_t *,
-                      uint32_t *>);
-    case HWC2::FunctionDescriptor::GetDisplayBrightnessSupport:
-      return ToHook<HWC2_PFN_GET_DISPLAY_BRIGHTNESS_SUPPORT>(
-          DisplayHook<decltype(&HwcDisplay::GetDisplayBrightnessSupport),
-                      &HwcDisplay::GetDisplayBrightnessSupport, bool *>);
-    case HWC2::FunctionDescriptor::SetDisplayBrightness:
-      return ToHook<HWC2_PFN_SET_DISPLAY_BRIGHTNESS>(
-          DisplayHook<decltype(&HwcDisplay::SetDisplayBrightness),
-                      &HwcDisplay::SetDisplayBrightness, float>);
-#endif /* PLATFORM_SDK_VERSION > 28 */
-#if PLATFORM_SDK_VERSION > 29
-    case HWC2::FunctionDescriptor::GetDisplayConnectionType:
-      return ToHook<HWC2_PFN_GET_DISPLAY_CONNECTION_TYPE>(
-          DisplayHook<decltype(&HwcDisplay::GetDisplayConnectionType),
-                      &HwcDisplay::GetDisplayConnectionType, uint32_t *>);
-    case HWC2::FunctionDescriptor::GetDisplayVsyncPeriod:
-      return ToHook<HWC2_PFN_GET_DISPLAY_VSYNC_PERIOD>(
-          DisplayHook<decltype(&HwcDisplay::GetDisplayVsyncPeriod),
-                      &HwcDisplay::GetDisplayVsyncPeriod,
-                      hwc2_vsync_period_t *>);
-    case HWC2::FunctionDescriptor::SetActiveConfigWithConstraints:
-      return ToHook<HWC2_PFN_SET_ACTIVE_CONFIG_WITH_CONSTRAINTS>(
-          DisplayHook<decltype(&HwcDisplay::SetActiveConfigWithConstraints),
-                      &HwcDisplay::SetActiveConfigWithConstraints,
-                      hwc2_config_t, hwc_vsync_period_change_constraints_t *,
-                      hwc_vsync_period_change_timeline_t *>);
-    case HWC2::FunctionDescriptor::SetAutoLowLatencyMode:
-      return ToHook<HWC2_PFN_SET_AUTO_LOW_LATENCY_MODE>(
-          DisplayHook<decltype(&HwcDisplay::SetAutoLowLatencyMode),
-                      &HwcDisplay::SetAutoLowLatencyMode, bool>);
-    case HWC2::FunctionDescriptor::GetSupportedContentTypes:
-      return ToHook<HWC2_PFN_GET_SUPPORTED_CONTENT_TYPES>(
-          DisplayHook<decltype(&HwcDisplay::GetSupportedContentTypes),
-                      &HwcDisplay::GetSupportedContentTypes, uint32_t *,
-                      uint32_t *>);
-    case HWC2::FunctionDescriptor::SetContentType:
-      return ToHook<HWC2_PFN_SET_CONTENT_TYPE>(
-          DisplayHook<decltype(&HwcDisplay::SetContentType),
-                      &HwcDisplay::SetContentType, int32_t>);
-#endif
-    // Layer functions
-    case HWC2::FunctionDescriptor::SetCursorPosition:
-      return ToHook<HWC2_PFN_SET_CURSOR_POSITION>(
-          LayerHook<decltype(&HwcLayer::SetCursorPosition),
-                    &HwcLayer::SetCursorPosition, int32_t, int32_t>);
-    case HWC2::FunctionDescriptor::SetLayerBlendMode:
-      return ToHook<HWC2_PFN_SET_LAYER_BLEND_MODE>(
-          LayerHook<decltype(&HwcLayer::SetLayerBlendMode),
-                    &HwcLayer::SetLayerBlendMode, int32_t>);
-    case HWC2::FunctionDescriptor::SetLayerBuffer:
-      return ToHook<HWC2_PFN_SET_LAYER_BUFFER>(
-          LayerHook<decltype(&HwcLayer::SetLayerBuffer),
-                    &HwcLayer::SetLayerBuffer, buffer_handle_t, int32_t>);
-    case HWC2::FunctionDescriptor::SetLayerColor:
-      return ToHook<HWC2_PFN_SET_LAYER_COLOR>(
-          LayerHook<decltype(&HwcLayer::SetLayerColor),
-                    &HwcLayer::SetLayerColor, hwc_color_t>);
-    case HWC2::FunctionDescriptor::SetLayerCompositionType:
-      return ToHook<HWC2_PFN_SET_LAYER_COMPOSITION_TYPE>(
-          LayerHook<decltype(&HwcLayer::SetLayerCompositionType),
-                    &HwcLayer::SetLayerCompositionType, int32_t>);
-    case HWC2::FunctionDescriptor::SetLayerDataspace:
-      return ToHook<HWC2_PFN_SET_LAYER_DATASPACE>(
-          LayerHook<decltype(&HwcLayer::SetLayerDataspace),
-                    &HwcLayer::SetLayerDataspace, int32_t>);
-    case HWC2::FunctionDescriptor::SetLayerDisplayFrame:
-      return ToHook<HWC2_PFN_SET_LAYER_DISPLAY_FRAME>(
-          LayerHook<decltype(&HwcLayer::SetLayerDisplayFrame),
-                    &HwcLayer::SetLayerDisplayFrame, hwc_rect_t>);
-    case HWC2::FunctionDescriptor::SetLayerPlaneAlpha:
-      return ToHook<HWC2_PFN_SET_LAYER_PLANE_ALPHA>(
-          LayerHook<decltype(&HwcLayer::SetLayerPlaneAlpha),
-                    &HwcLayer::SetLayerPlaneAlpha, float>);
-    case HWC2::FunctionDescriptor::SetLayerSidebandStream:
-      return ToHook<HWC2_PFN_SET_LAYER_SIDEBAND_STREAM>(
-          LayerHook<decltype(&HwcLayer::SetLayerSidebandStream),
-                    &HwcLayer::SetLayerSidebandStream,
-                    const native_handle_t *>);
-    case HWC2::FunctionDescriptor::SetLayerSourceCrop:
-      return ToHook<HWC2_PFN_SET_LAYER_SOURCE_CROP>(
-          LayerHook<decltype(&HwcLayer::SetLayerSourceCrop),
-                    &HwcLayer::SetLayerSourceCrop, hwc_frect_t>);
-    case HWC2::FunctionDescriptor::SetLayerSurfaceDamage:
-      return ToHook<HWC2_PFN_SET_LAYER_SURFACE_DAMAGE>(
-          LayerHook<decltype(&HwcLayer::SetLayerSurfaceDamage),
-                    &HwcLayer::SetLayerSurfaceDamage, hwc_region_t>);
-    case HWC2::FunctionDescriptor::SetLayerTransform:
-      return ToHook<HWC2_PFN_SET_LAYER_TRANSFORM>(
-          LayerHook<decltype(&HwcLayer::SetLayerTransform),
-                    &HwcLayer::SetLayerTransform, int32_t>);
-    case HWC2::FunctionDescriptor::SetLayerVisibleRegion:
-      return ToHook<HWC2_PFN_SET_LAYER_VISIBLE_REGION>(
-          LayerHook<decltype(&HwcLayer::SetLayerVisibleRegion),
-                    &HwcLayer::SetLayerVisibleRegion, hwc_region_t>);
-    case HWC2::FunctionDescriptor::SetLayerZOrder:
-      return ToHook<HWC2_PFN_SET_LAYER_Z_ORDER>(
-          LayerHook<decltype(&HwcLayer::SetLayerZOrder),
-                    &HwcLayer::SetLayerZOrder, uint32_t>);
-    case HWC2::FunctionDescriptor::Invalid:
-    default:
-      return nullptr;
-  }
-}
-
-// static
-int DrmHwcTwo::HookDevOpen(const struct hw_module_t *module, const char *name,
-                           struct hw_device_t **dev) {
-  if (strcmp(name, HWC_HARDWARE_COMPOSER) != 0) {
-    ALOGE("Invalid module name- %s", name);
-    return -EINVAL;
-  }
-
-  std::unique_ptr<DrmHwcTwo> ctx(new DrmHwcTwo());
-  if (!ctx) {
-    ALOGE("Failed to allocate DrmHwcTwo");
-    return -ENOMEM;
-  }
-
-  HWC2::Error err = ctx->Init();
-  if (err != HWC2::Error::None) {
-    ALOGE("Failed to initialize DrmHwcTwo err=%d\n", err);
-    return -EINVAL;
-  }
-
-  ctx->common.module = (hw_module_t *)module;
-  *dev = &ctx.release()->common;
-
-  return 0;
-}
 }  // namespace android
-
-// NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
-static struct hw_module_methods_t hwc2_module_methods = {
-    .open = android::DrmHwcTwo::HookDevOpen,
-};
-
-// NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
-hw_module_t HAL_MODULE_INFO_SYM = {
-    .tag = HARDWARE_MODULE_TAG,
-    .module_api_version = HARDWARE_MODULE_API_VERSION(2, 0),
-    .id = HWC_HARDWARE_MODULE_ID,
-    .name = "DrmHwcTwo module",
-    .author = "The Android Open Source Project",
-    .methods = &hwc2_module_methods,
-    .dso = nullptr,
-    .reserved = {0},
-};