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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "ui/ozone/platform/dri/dri_buffer.h" | |
| 6 | |
| 7 #include "base/logging.h" | |
| 8 #include "ui/ozone/platform/dri/dri_wrapper.h" | |
| 9 | |
| 10 namespace ui { | |
| 11 | |
| 12 namespace { | |
| 13 | |
| 14 // Modesetting cannot happen from a buffer with transparencies. Return the size | |
| 15 // of a pixel without alpha. | |
| 16 uint8_t GetColorDepth(SkColorType type) { | |
| 17 switch (type) { | |
| 18 case kUnknown_SkColorType: | |
| 19 case kAlpha_8_SkColorType: | |
| 20 return 0; | |
| 21 case kIndex_8_SkColorType: | |
| 22 return 8; | |
| 23 case kRGB_565_SkColorType: | |
| 24 return 16; | |
| 25 case kARGB_4444_SkColorType: | |
| 26 return 12; | |
| 27 case kN32_SkColorType: | |
| 28 return 24; | |
| 29 default: | |
| 30 NOTREACHED(); | |
| 31 return 0; | |
| 32 } | |
| 33 } | |
| 34 | |
| 35 } // namespace | |
| 36 | |
| 37 DriBuffer::DriBuffer(DriWrapper* dri) | |
| 38 : dri_(dri), handle_(0), framebuffer_(0) {} | |
| 39 | |
| 40 DriBuffer::~DriBuffer() { | |
| 41 if (!surface_) | |
| 42 return; | |
| 43 | |
| 44 if (framebuffer_) | |
| 45 dri_->RemoveFramebuffer(framebuffer_); | |
| 46 | |
| 47 SkImageInfo info; | |
| 48 void* pixels = const_cast<void*>(surface_->peekPixels(&info, NULL)); | |
| 49 if (!pixels) | |
| 50 return; | |
| 51 | |
| 52 dri_->DestroyDumbBuffer(info, handle_, stride_, pixels); | |
| 53 } | |
| 54 | |
| 55 bool DriBuffer::Initialize(const SkImageInfo& info) { | |
| 56 void* pixels = NULL; | |
| 57 if (!dri_->CreateDumbBuffer(info, &handle_, &stride_, &pixels)) { | |
| 58 VLOG(2) << "Cannot create drm dumb buffer"; | |
| 59 return false; | |
| 60 } | |
| 61 | |
| 62 if (!dri_->AddFramebuffer(info.width(), | |
| 63 info.height(), | |
| 64 GetColorDepth(info.colorType()), | |
| 65 info.bytesPerPixel() << 3, | |
| 66 stride_, | |
| 67 handle_, | |
| 68 &framebuffer_)) { | |
| 69 VLOG(2) << "Failed to register framebuffer: " << strerror(errno); | |
| 70 return false; | |
| 71 } | |
| 72 | |
| 73 surface_ = skia::AdoptRef(SkSurface::NewRasterDirect(info, pixels, stride_)); | |
| 74 if (!surface_) { | |
| 75 VLOG(2) << "Cannot install Skia pixels for drm buffer"; | |
| 76 return false; | |
| 77 } | |
| 78 | |
| 79 return true; | |
| 80 } | |
| 81 | |
| 82 SkCanvas* DriBuffer::GetCanvas() const { | |
| 83 return surface_->getCanvas(); | |
| 84 } | |
| 85 | |
| 86 uint32_t DriBuffer::GetFramebufferId() const { | |
| 87 return framebuffer_; | |
| 88 } | |
| 89 | |
| 90 uint32_t DriBuffer::GetHandle() const { | |
| 91 return handle_; | |
| 92 } | |
| 93 | |
| 94 gfx::Size DriBuffer::GetSize() const { | |
| 95 return gfx::Size(surface_->width(), surface_->height()); | |
| 96 } | |
| 97 | |
| 98 DriBufferGenerator::DriBufferGenerator(DriWrapper* dri) : dri_(dri) {} | |
| 99 | |
| 100 DriBufferGenerator::~DriBufferGenerator() {} | |
| 101 | |
| 102 scoped_refptr<ScanoutBuffer> DriBufferGenerator::Create(const gfx::Size& size) { | |
| 103 scoped_refptr<DriBuffer> buffer(new DriBuffer(dri_)); | |
| 104 SkImageInfo info = SkImageInfo::MakeN32Premul(size.width(), size.height()); | |
| 105 if (!buffer->Initialize(info)) | |
| 106 return NULL; | |
| 107 | |
| 108 return buffer; | |
| 109 } | |
| 110 | |
| 111 } // namespace ui | |
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