| // Copyright 2018 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // WARNING: This file is machine generated by fidlc. |
| |
| #pragma once |
| |
| #include <ddk/protocol/amlogic-canvas.h> |
| #include <ddktl/device-internal.h> |
| #include <zircon/assert.h> |
| #include <zircon/compiler.h> |
| #include <zircon/types.h> |
| |
| #include "amlogic-canvas-internal.h" |
| |
| // DDK canvas-protocol support |
| // |
| // :: Proxies :: |
| // |
| // ddk::CanvasProtocolProxy is a simple wrapper around |
| // canvas_protocol_t. It does not own the pointers passed to it |
| // |
| // :: Mixins :: |
| // |
| // ddk::CanvasProtocol is a mixin class that simplifies writing DDK drivers |
| // that implement the canvas protocol. It doesn't set the base protocol. |
| // |
| // :: Examples :: |
| // |
| // // A driver that implements a ZX_PROTOCOL_CANVAS device. |
| // class CanvasDevice { |
| // using CanvasDeviceType = ddk::Device<CanvasDevice, /* ddk mixins */>; |
| // |
| // class CanvasDevice : public CanvasDeviceType, |
| // public ddk::CanvasProtocol<CanvasDevice> { |
| // public: |
| // CanvasDevice(zx_device_t* parent) |
| // : CanvasDeviceType("my-canvas-protocol-device", parent) {} |
| // |
| // zx_status_t CanvasConfig(zx_handle_t vmo, size_t offset, const canvas_info_t* info, uint8_t* |
| // out_canvas_idx); |
| // |
| // zx_status_t CanvasFree(uint8_t canvas_idx); |
| // |
| // ... |
| // }; |
| |
| namespace ddk { |
| |
| template <typename D> |
| class CanvasProtocol : public internal::base_protocol { |
| public: |
| CanvasProtocol() { |
| internal::CheckCanvasProtocolSubclass<D>(); |
| ops_.config = CanvasConfig; |
| ops_.free = CanvasFree; |
| |
| // Can only inherit from one base_protocol implementation. |
| ZX_ASSERT(ddk_proto_id_ = 0); |
| ddk_proto_id_ = ZX_PROTOCOL_CANVAS; |
| ddk_proto_ops_ = &ops_; |
| } |
| |
| protected: |
| canvas_protocol_ops_t ops_ = {}; |
| |
| private: |
| // Configures a canvas. |
| // Adds a framebuffer to the canvas lookup table. |
| static zx_status_t CanvasConfig(void* ctx, zx_handle_t vmo, size_t offset, |
| const canvas_info_t* info, uint8_t* out_canvas_idx) { |
| return static_cast<D*>(ctx)->CanvasConfig(vmo, offset, info, out_canvas_idx); |
| } |
| // Frees up a canvas. |
| static zx_status_t CanvasFree(void* ctx, uint8_t canvas_idx) { |
| return static_cast<D*>(ctx)->CanvasFree(canvas_idx); |
| } |
| }; |
| |
| class CanvasProtocolProxy { |
| public: |
| CanvasProtocolProxy() : ops_(nullptr), ctx_(nullptr) {} |
| CanvasProtocolProxy(const canvas_protocol_t* proto) : ops_(proto->ops), ctx_(proto->ctx) {} |
| |
| void GetProto(canvas_protocol_t* proto) { |
| proto->ctx = ctx_; |
| proto->ops = ops_; |
| } |
| bool is_valid() { return ops_ != nullptr; } |
| void clear() { |
| ctx_ = nullptr; |
| ops_ = nullptr; |
| } |
| // Configures a canvas. |
| // Adds a framebuffer to the canvas lookup table. |
| zx_status_t Config(zx_handle_t vmo, size_t offset, const canvas_info_t* info, |
| uint8_t* out_canvas_idx) { |
| return ops_->config(ctx_, vmo, offset, info, out_canvas_idx); |
| } |
| // Frees up a canvas. |
| zx_status_t Free(uint8_t canvas_idx) { return ops_->free(ctx_, canvas_idx); } |
| |
| private: |
| canvas_protocol_ops_t* ops_; |
| void* ctx_; |
| }; |
| |
| } // namespace ddk |