/*
* Copyright (c) 2014-2018, The Linux Foundation. All rights reserved.
* Not a Contribution.
*
* Copyright 2015 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 __HWC_SESSION_H__
#define __HWC_SESSION_H__
#include <vendor/display/config/1.0/IDisplayConfig.h>
#include <core/core_interface.h>
#include <utils/locker.h>
#include "hwc_callbacks.h"
#include "hwc_layers.h"
#include "hwc_display.h"
#include "hwc_display_primary.h"
#include "hwc_display_external.h"
#include "hwc_display_virtual.h"
#include "hwc_color_manager.h"
#include "hwc_socket_handler.h"
namespace sdm {
using ::vendor::display::config::V1_0::IDisplayConfig;
using ::android::hardware::Return;
// Create a singleton uevent listener thread valid for life of hardware composer process.
// This thread blocks on uevents poll inside uevent library implementation. This poll exits
// only when there is a valid uevent, it can not be interrupted otherwise. Tieing life cycle
// of this thread with HWC session cause HWC deinitialization to wait infinitely for the
// thread to exit.
class HWCUEventListener {
public:
virtual ~HWCUEventListener() {}
virtual void UEventHandler(const char *uevent_data, int length) = 0;
};
class HWCUEvent {
public:
HWCUEvent();
static void UEventThread(HWCUEvent *hwc_event);
void Register(HWCUEventListener *uevent_listener);
inline bool InitDone() { return init_done_; }
private:
std::mutex mutex_;
std::condition_variable caller_cv_;
HWCUEventListener *uevent_listener_ = nullptr;
bool init_done_ = false;
};
class HWCSession : hwc2_device_t, HWCUEventListener, IDisplayConfig, public qClient::BnQClient {
public:
struct HWCModuleMethods : public hw_module_methods_t {
HWCModuleMethods() { hw_module_methods_t::open = HWCSession::Open; }
};
explicit HWCSession(const hw_module_t *module);
int Init();
int Deinit();
HWC2::Error CreateVirtualDisplayObject(uint32_t width, uint32_t height, int32_t *format);
template <typename... Args>
static int32_t CallDisplayFunction(hwc2_device_t *device, hwc2_display_t display,
HWC2::Error (HWCDisplay::*member)(Args...), Args... args) {
if (!device) {
return HWC2_ERROR_BAD_PARAMETER;
}
if (display >= HWC_NUM_DISPLAY_TYPES) {
return HWC2_ERROR_BAD_DISPLAY;
}
HWCSession *hwc_session = static_cast<HWCSession *>(device);
auto status = HWC2::Error::BadDisplay;
if (hwc_session->hwc_display_[display]) {
auto hwc_display = hwc_session->hwc_display_[display];
status = (hwc_display->*member)(std::forward<Args>(args)...);
}
return INT32(status);
}
template <typename... Args>
static int32_t CallLayerFunction(hwc2_device_t *device, hwc2_display_t display,
hwc2_layer_t layer, HWC2::Error (HWCLayer::*member)(Args...),
Args... args) {
if (!device) {
return HWC2_ERROR_BAD_DISPLAY;
}
HWCSession *hwc_session = static_cast<HWCSession *>(device);
auto status = HWC2::Error::BadDisplay;
if (hwc_session->hwc_display_[display]) {
status = HWC2::Error::BadLayer;
auto hwc_layer = hwc_session->hwc_display_[display]->GetHWCLayer(layer);
if (hwc_layer != nullptr) {
status = (hwc_layer->*member)(std::forward<Args>(args)...);
if (hwc_session->hwc_display_[display]->GetGeometryChanges()) {
hwc_session->hwc_display_[display]->ResetValidation();
}
}
}
return INT32(status);
}
// HWC2 Functions that require a concrete implementation in hwc session
// and hence need to be member functions
static int32_t AcceptDisplayChanges(hwc2_device_t *device, hwc2_display_t display);
static int32_t CreateLayer(hwc2_device_t *device, hwc2_display_t display,
hwc2_layer_t *out_layer_id);
static int32_t CreateVirtualDisplay(hwc2_device_t *device, uint32_t width, uint32_t height,
int32_t *format, hwc2_display_t *out_display_id);
static int32_t DestroyLayer(hwc2_device_t *device, hwc2_display_t display, hwc2_layer_t layer);
static int32_t DestroyVirtualDisplay(hwc2_device_t *device, hwc2_display_t display);
static void Dump(hwc2_device_t *device, uint32_t *out_size, char *out_buffer);
static int32_t PresentDisplay(hwc2_device_t *device, hwc2_display_t display,
int32_t *out_retire_fence);
static int32_t RegisterCallback(hwc2_device_t *device, int32_t descriptor,
hwc2_callback_data_t callback_data,
hwc2_function_pointer_t pointer);
static int32_t SetOutputBuffer(hwc2_device_t *device, hwc2_display_t display,
buffer_handle_t buffer, int32_t releaseFence);
static int32_t SetLayerZOrder(hwc2_device_t *device, hwc2_display_t display, hwc2_layer_t layer,
uint32_t z);
static int32_t SetPowerMode(hwc2_device_t *device, hwc2_display_t display, int32_t int_mode);
static int32_t ValidateDisplay(hwc2_device_t *device, hwc2_display_t display,
uint32_t *out_num_types, uint32_t *out_num_requests);
static int32_t SetColorMode(hwc2_device_t *device, hwc2_display_t display,
int32_t /*android_color_mode_t*/ int_mode);
static int32_t SetColorTransform(hwc2_device_t *device, hwc2_display_t display,
const float *matrix, int32_t /*android_color_transform_t*/ hint);
private:
static const int kExternalConnectionTimeoutMs = 500;
static const int kPartialUpdateControlTimeoutMs = 100;
// hwc methods
static int Open(const hw_module_t *module, const char *name, hw_device_t **device);
static int Close(hw_device_t *device);
static void GetCapabilities(struct hwc2_device *device, uint32_t *outCount,
int32_t *outCapabilities);
static hwc2_function_pointer_t GetFunction(struct hwc2_device *device, int32_t descriptor);
// Uevent handler
virtual void UEventHandler(const char *uevent_data, int length);
int GetEventValue(const char *uevent_data, int length, const char *event_info);
int HotPlugHandler(bool connected);
void ResetPanel();
int32_t ConnectDisplay(int disp);
int DisconnectDisplay(int disp);
int GetVsyncPeriod(int disp);
int32_t GetConfigCount(int disp_id, uint32_t *count);
int32_t GetActiveConfigIndex(int disp_id, uint32_t *config);
int32_t SetActiveConfigIndex(int disp_id, uint32_t config);
int32_t ControlPartialUpdate(int dpy, bool enable);
int32_t DisplayBWTransactionPending(bool *status);
int32_t SetSecondaryDisplayStatus(int disp_id, HWCDisplay::DisplayStatus status);
int32_t GetPanelBrightness(int *level);
int32_t MinHdcpEncryptionLevelChanged(int disp_id, uint32_t min_enc_level);
// service methods
void StartServices();
// Methods from ::android::hardware::display::config::V1_0::IDisplayConfig follow.
Return<void> isDisplayConnected(IDisplayConfig::DisplayType dpy,
isDisplayConnected_cb _hidl_cb) override;
Return<int32_t> setSecondayDisplayStatus(IDisplayConfig::DisplayType dpy,
IDisplayConfig::DisplayExternalStatus status) override;
Return<int32_t> configureDynRefeshRate(IDisplayConfig::DisplayDynRefreshRateOp op,
uint32_t refreshRate) override;
Return<void> getConfigCount(IDisplayConfig::DisplayType dpy,
getConfigCount_cb _hidl_cb) override;
Return<void> getActiveConfig(IDisplayConfig::DisplayType dpy,
getActiveConfig_cb _hidl_cb) override;
Return<int32_t> setActiveConfig(IDisplayConfig::DisplayType dpy, uint32_t config) override;
Return<void> getDisplayAttributes(uint32_t configIndex, IDisplayConfig::DisplayType dpy,
getDisplayAttributes_cb _hidl_cb) override;
Return<int32_t> setPanelBrightness(uint32_t level) override;
Return<void> getPanelBrightness(getPanelBrightness_cb _hidl_cb) override;
Return<int32_t> minHdcpEncryptionLevelChanged(IDisplayConfig::DisplayType dpy,
uint32_t min_enc_level) override;
Return<int32_t> refreshScreen() override;
Return<int32_t> controlPartialUpdate(IDisplayConfig::DisplayType dpy, bool enable) override;
Return<int32_t> toggleScreenUpdate(bool on) override;
Return<int32_t> setIdleTimeout(uint32_t value) override;
Return<void> getHDRCapabilities(IDisplayConfig::DisplayType dpy,
getHDRCapabilities_cb _hidl_cb) override;
Return<int32_t> setCameraLaunchStatus(uint32_t on) override;
Return<void> displayBWTransactionPending(displayBWTransactionPending_cb _hidl_cb) override;
// QClient methods
virtual android::status_t notifyCallback(uint32_t command, const android::Parcel *input_parcel,
android::Parcel *output_parcel);
void DynamicDebug(const android::Parcel *input_parcel);
void SetFrameDumpConfig(const android::Parcel *input_parcel);
android::status_t SetMaxMixerStages(const android::Parcel *input_parcel);
android::status_t SetDisplayMode(const android::Parcel *input_parcel);
android::status_t ConfigureRefreshRate(const android::Parcel *input_parcel);
android::status_t QdcmCMDHandler(const android::Parcel *input_parcel,
android::Parcel *output_parcel);
android::status_t HandleGetDisplayAttributesForConfig(const android::Parcel *input_parcel,
android::Parcel *output_parcel);
android::status_t GetVisibleDisplayRect(const android::Parcel *input_parcel,
android::Parcel *output_parcel);
android::status_t SetMixerResolution(const android::Parcel *input_parcel);
android::status_t SetColorModeOverride(const android::Parcel *input_parcel);
android::status_t SetStandByMode(const android::Parcel *input_parcel);
void Refresh(hwc2_display_t display);
void HotPlug(hwc2_display_t display, HWC2::Connection state);
static Locker locker_;
CoreInterface *core_intf_ = nullptr;
HWCDisplay *hwc_display_[HWC_NUM_DISPLAY_TYPES] = {nullptr};
HWCCallbacks callbacks_;
HWCBufferAllocator buffer_allocator_;
HWCBufferSyncHandler buffer_sync_handler_;
HWCColorManager *color_mgr_ = nullptr;
bool reset_panel_ = false;
bool secure_display_active_ = false;
bool external_pending_connect_ = false;
bool new_bw_mode_ = false;
bool need_invalidate_ = false;
int bw_mode_release_fd_ = -1;
qService::QService *qservice_ = nullptr;
HWCSocketHandler socket_handler_;
bool hdmi_is_primary_ = false;
Locker callbacks_lock_;
};
} // namespace sdm
#endif // __HWC_SESSION_H__