1 /* 2 * Copyright (c) 2016-2018, The Linux Foundation. All rights reserved. 3 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * * Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * * Redistributions in binary form must reproduce the above 10 * copyright notice, this list of conditions and the following 11 * disclaimer in the documentation and/or other materials provided 12 * with the distribution. 13 * * Neither the name of The Linux Foundation nor the names of its 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS 21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 24 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 25 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 26 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 27 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #ifndef __GR_BUF_DESCRIPTOR_H__ 31 #define __GR_BUF_DESCRIPTOR_H__ 32 33 #include <android/hardware/graphics/mapper/2.1/IMapper.h> 34 #include <atomic> 35 36 namespace gralloc { 37 using android::hardware::graphics::mapper::V2_0::Error; 38 using android::hardware::graphics::mapper::V2_1::IMapper; 39 using android::hardware::hidl_vec; 40 41 const uint32_t kBufferDescriptorSize = 7; 42 const uint32_t kMagicVersion = 0x76312E30; // v1.0 43 44 class BufferDescriptor { 45 public: BufferDescriptor()46 BufferDescriptor() {} BufferDescriptor(uint64_t id)47 explicit BufferDescriptor(uint64_t id) : id_(id) {} 48 Encode(const IMapper::BufferDescriptorInfo & bd_info)49 static hidl_vec<uint32_t> Encode(const IMapper::BufferDescriptorInfo &bd_info) { 50 hidl_vec<uint32_t> out; 51 out.resize(kBufferDescriptorSize); 52 out[0] = kMagicVersion; 53 out[1] = bd_info.width; 54 out[2] = bd_info.height; 55 out[3] = bd_info.layerCount; 56 out[4] = static_cast<uint32_t>(bd_info.format); 57 out[5] = static_cast<uint32_t>(bd_info.usage); 58 out[6] = static_cast<uint32_t>(bd_info.usage >> 32); 59 return out; 60 } 61 Decode(const hidl_vec<uint32_t> & in)62 Error Decode(const hidl_vec<uint32_t> &in) { 63 if (in.size() != kBufferDescriptorSize || in[0] != kMagicVersion) { 64 return Error::BAD_DESCRIPTOR; 65 } 66 width_ = static_cast<int32_t>(in[1]); 67 height_ = static_cast<int32_t>(in[2]); 68 layer_count_ = in[3]; 69 format_ = static_cast<int32_t>(in[4]); 70 usage_ = static_cast<uint64_t>(in[6]) << 32 | in[5]; 71 return Error::NONE; 72 } 73 SetUsage(uint64_t usage)74 void SetUsage(uint64_t usage) { usage_ |= usage; } 75 SetDimensions(int w,int h)76 void SetDimensions(int w, int h) { 77 width_ = w; 78 height_ = h; 79 } 80 SetColorFormat(int format)81 void SetColorFormat(int format) { format_ = format; } 82 SetLayerCount(uint32_t layer_count)83 void SetLayerCount(uint32_t layer_count) { layer_count_ = layer_count; } 84 GetUsage()85 uint64_t GetUsage() const { return usage_; } 86 GetWidth()87 int GetWidth() const { return width_; } 88 GetHeight()89 int GetHeight() const { return height_; } 90 GetFormat()91 int GetFormat() const { return format_; } 92 GetLayerCount()93 uint32_t GetLayerCount() const { return layer_count_; } 94 GetId()95 uint64_t GetId() const { return id_; } 96 97 private: 98 int width_ = -1; 99 int height_ = -1; 100 int format_ = -1; 101 uint32_t layer_count_ = 1; 102 uint64_t usage_ = 0; 103 const uint64_t id_ = 0; 104 }; 105 }; // namespace gralloc 106 #endif // __GR_BUF_DESCRIPTOR_H__ 107