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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim:set ts=4 sw=4 sts=4 et: */
/*
* Copyright (c) 2015 The Linux Foundation. All rights reserved.
*
* 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 mozilla_HwcHALBase
#define mozilla_HwcHALBase
#include "mozilla/UniquePtr.h"
#include "nsRect.h"
#include <hardware/hwcomposer.h>
#ifndef HWC_BLIT
#if ANDROID_VERSION >= 21
#define HWC_BLIT 0xFF
#elif ANDROID_VERSION >= 17
#define HWC_BLIT (HWC_FRAMEBUFFER_TARGET + 1)
#else
// ICS didn't support this. However, we define this
// for passing compilation
#define HWC_BLIT 0xFF
#endif // #if ANDROID_VERSION
#endif // #ifndef HWC_BLIT
namespace mozilla {
#if ANDROID_VERSION >= 17
using HwcDevice = hwc_composer_device_1_t;
using HwcList = hwc_display_contents_1_t;
using HwcLayer = hwc_layer_1_t;
#else
using HwcDevice = hwc_composer_device_t;
using HwcList = hwc_layer_list_t;
using HwcLayer = hwc_layer_t;
#endif
// HwcHAL definition for HwcEvent callback types
// Note: hwc_procs is different between ICS and later,
// and the signature of invalidate is also different.
// Use this wrap struct to hide the detail. BTW,
// we don't have to register callback functions on ICS, so
// there is no callbacks for ICS in HwcHALProcs.
typedef struct HwcHALProcs {
void (*invalidate)(const struct hwc_procs* procs);
void (*vsync)(const struct hwc_procs* procs, int disp, int64_t timestamp);
void (*hotplug)(const struct hwc_procs* procs, int disp, int connected);
} HwcHALProcs_t;
// HwcHAL class
// This class handle all the HAL related work
// The purpose of HwcHAL is to make HwcComposer2D simpler.
class HwcHALBase {
public:
// Query Types. We can add more types easily in the future
enum class QueryType {
COLOR_FILL = 0x8,
RB_SWAP = 0x40
};
public:
explicit HwcHALBase() = default;
virtual ~HwcHALBase() {}
// Create HwcHAL module, Only HwcComposer2D calls this.
// If other modules want to use HwcHAL, please use APIs in
// HwcComposer2D
static UniquePtr<HwcHALBase> CreateHwcHAL();
// Check if mHwc exists
virtual bool HasHwc() const = 0;
// Set EGL info (only ICS need this info)
virtual void SetEGLInfo(hwc_display_t aEGLDisplay,
hwc_surface_t aEGLSurface) = 0;
// HwcDevice query properties
virtual bool Query(QueryType aType) = 0;
// HwcDevice set
virtual int Set(HwcList *aList,
uint32_t aDisp) = 0;
// Reset HwcDevice
virtual int ResetHwc() = 0;
// HwcDevice prepare
virtual int Prepare(HwcList *aList,
uint32_t aDisp,
hwc_rect_t aDispRect,
buffer_handle_t aHandle,
int aFenceFd) = 0;
// Check transparency support
virtual bool SupportTransparency() const = 0;
// Get a geometry change flag
virtual uint32_t GetGeometryChangedFlag(bool aGeometryChanged) const = 0;
// Set crop help
virtual void SetCrop(HwcLayer &aLayer,
const hwc_rect_t &aSrcCrop) const = 0;
// Enable HW Vsync
virtual bool EnableVsync(bool aEnable) = 0;
// Register HW event callback functions
virtual bool RegisterHwcEventCallback(const HwcHALProcs_t &aProcs) = 0;
protected:
constexpr static uint32_t HwcAPIVersion(uint32_t aMaj, uint32_t aMin) {
// HARDWARE_MAKE_API_VERSION_2, from Android hardware.h
return (((aMaj & 0xff) << 24) | ((aMin & 0xff) << 16) | (1 & 0xffff));
}
};
} // namespace mozilla
#endif // mozilla_HwcHALBase
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