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| 1 // Copyright 2017 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 "chrome/browser/android/vr_shell/vr_controller_model.h" |
| 6 |
| 7 #include "base/files/file_path.h" |
| 8 #include "base/files/file_util.h" |
| 9 #include "base/memory/ptr_util.h" |
| 10 #include "base/path_service.h" |
| 11 #include "chrome/browser/android/vr_shell/gltf_parser.h" |
| 12 #include "components/component_updater/component_updater_paths.h" |
| 13 #include "ui/gfx/codec/png_codec.h" |
| 14 |
| 15 namespace vr_shell { |
| 16 |
| 17 namespace { |
| 18 |
| 19 enum { |
| 20 ELEMENTS_BUFFER_ID = 0, |
| 21 INDICES_BUFFER_ID = 1, |
| 22 }; |
| 23 |
| 24 constexpr char kPosition[] = "POSITION"; |
| 25 constexpr char kTexCoord[] = "TEXCOORD_0"; |
| 26 |
| 27 } // namespace |
| 28 |
| 29 constexpr char const VrControllerModel::kComponentName[]; |
| 30 constexpr char const VrControllerModel::kDefaultVersion[]; |
| 31 constexpr char const VrControllerModel::kModelsDirectory[]; |
| 32 constexpr char const VrControllerModel::kModelFilename[]; |
| 33 constexpr char const VrControllerModel::kTexturesDirectory[]; |
| 34 constexpr char const* VrControllerModel::kTextureFilenames[]; |
| 35 |
| 36 VrControllerModel::VrControllerModel( |
| 37 std::unique_ptr<gltf::Asset> gltf_asset, |
| 38 std::vector<std::unique_ptr<gltf::Buffer>> buffers) |
| 39 : gltf_asset_(std::move(gltf_asset)), |
| 40 texture_bitmaps_(State::STATE_COUNT), |
| 41 buffers_(std::move(buffers)) {} |
| 42 |
| 43 VrControllerModel::~VrControllerModel() = default; |
| 44 |
| 45 const GLvoid* VrControllerModel::ElementsBuffer() const { |
| 46 const gltf::BufferView* buffer_view = |
| 47 gltf_asset_->GetBufferView(ELEMENTS_BUFFER_ID); |
| 48 DCHECK(buffer_view && buffer_view->target == GL_ARRAY_BUFFER); |
| 49 const char* buffer = Buffer(); |
| 50 return buffer ? buffer + buffer_view->byte_offset : nullptr; |
| 51 } |
| 52 |
| 53 GLsizeiptr VrControllerModel::ElementsBufferSize() const { |
| 54 const gltf::BufferView* buffer_view = |
| 55 gltf_asset_->GetBufferView(ELEMENTS_BUFFER_ID); |
| 56 DCHECK(buffer_view && buffer_view->target == GL_ARRAY_BUFFER); |
| 57 return buffer_view->byte_length; |
| 58 } |
| 59 |
| 60 const GLvoid* VrControllerModel::IndicesBuffer() const { |
| 61 const gltf::BufferView* buffer_view = |
| 62 gltf_asset_->GetBufferView(INDICES_BUFFER_ID); |
| 63 DCHECK(buffer_view && buffer_view->target == GL_ELEMENT_ARRAY_BUFFER); |
| 64 const char* buffer = Buffer(); |
| 65 return buffer ? buffer + buffer_view->byte_offset : nullptr; |
| 66 } |
| 67 |
| 68 GLsizeiptr VrControllerModel::IndicesBufferSize() const { |
| 69 const gltf::BufferView* buffer_view = |
| 70 gltf_asset_->GetBufferView(INDICES_BUFFER_ID); |
| 71 DCHECK(buffer_view && buffer_view->target == GL_ELEMENT_ARRAY_BUFFER); |
| 72 return buffer_view->byte_length; |
| 73 } |
| 74 |
| 75 GLenum VrControllerModel::DrawMode() const { |
| 76 const gltf::Mesh* mesh = gltf_asset_->GetMesh(0); |
| 77 DCHECK(mesh && mesh->primitives.size()); |
| 78 return mesh->primitives[0]->mode; |
| 79 } |
| 80 |
| 81 const gltf::Accessor* VrControllerModel::IndicesAccessor() const { |
| 82 const gltf::Mesh* mesh = gltf_asset_->GetMesh(0); |
| 83 DCHECK(mesh && mesh->primitives.size()); |
| 84 return mesh->primitives[0]->indices; |
| 85 } |
| 86 |
| 87 const gltf::Accessor* VrControllerModel::PositionAccessor() const { |
| 88 return Accessor(kPosition); |
| 89 } |
| 90 |
| 91 const gltf::Accessor* VrControllerModel::TextureCoordinateAccessor() const { |
| 92 return Accessor(kTexCoord); |
| 93 } |
| 94 |
| 95 void VrControllerModel::SetTexture(int state, |
| 96 std::unique_ptr<SkBitmap> bitmap) { |
| 97 DCHECK(state >= 0 && state < STATE_COUNT); |
| 98 texture_bitmaps_[state] = std::move(bitmap); |
| 99 } |
| 100 |
| 101 const SkBitmap* VrControllerModel::GetTexture(int state) const { |
| 102 DCHECK(state >= 0 && state < STATE_COUNT); |
| 103 return texture_bitmaps_[state].get(); |
| 104 } |
| 105 |
| 106 const char* VrControllerModel::Buffer() const { |
| 107 if (buffers_.empty()) |
| 108 return nullptr; |
| 109 return buffers_[0]->data(); |
| 110 } |
| 111 |
| 112 const gltf::Accessor* VrControllerModel::Accessor( |
| 113 const std::string& key) const { |
| 114 const gltf::Mesh* mesh = gltf_asset_->GetMesh(0); |
| 115 DCHECK(mesh && mesh->primitives.size()); |
| 116 auto it = mesh->primitives[0]->attributes.find(key); |
| 117 DCHECK(it != mesh->primitives[0]->attributes.begin()); |
| 118 return it->second; |
| 119 } |
| 120 |
| 121 std::unique_ptr<VrControllerModel> VrControllerModel::LoadFromComponent() { |
| 122 base::FilePath models_path; |
| 123 PathService::Get(component_updater::DIR_COMPONENT_USER, &models_path); |
| 124 models_path = models_path.Append(VrControllerModel::kComponentName) |
| 125 .Append(VrControllerModel::kDefaultVersion) |
| 126 .Append(VrControllerModel::kModelsDirectory); |
| 127 auto model_path = models_path.Append(VrControllerModel::kModelFilename); |
| 128 |
| 129 // No further action if model file is not present |
| 130 if (!base::PathExists(model_path)) { |
| 131 LOG(WARNING) << "Controller model files not found"; |
| 132 return nullptr; |
| 133 } |
| 134 |
| 135 GltfParser gltf_parser; |
| 136 std::vector<std::unique_ptr<gltf::Buffer>> buffers; |
| 137 auto asset = gltf_parser.Parse(model_path, &buffers); |
| 138 if (!asset) { |
| 139 LOG(ERROR) << "Failed to read controller model"; |
| 140 return nullptr; |
| 141 } |
| 142 |
| 143 auto controller_model = |
| 144 base::MakeUnique<VrControllerModel>(std::move(asset), std::move(buffers)); |
| 145 |
| 146 auto textures_path = |
| 147 models_path.Append(VrControllerModel::kTexturesDirectory); |
| 148 |
| 149 for (int i = 0; i < VrControllerModel::STATE_COUNT; i++) { |
| 150 auto texture_path = |
| 151 textures_path.Append(VrControllerModel::kTextureFilenames[i]); |
| 152 std::string data; |
| 153 auto bitmap = base::MakeUnique<SkBitmap>(); |
| 154 if (!base::ReadFileToString(texture_path, &data) || |
| 155 !gfx::PNGCodec::Decode( |
| 156 reinterpret_cast<const unsigned char*>(data.data()), data.size(), |
| 157 bitmap.get()) || |
| 158 bitmap->colorType() != kRGBA_8888_SkColorType) { |
| 159 LOG(ERROR) << "Failed to read controller texture"; |
| 160 return nullptr; |
| 161 } |
| 162 controller_model->SetTexture(i, std::move(bitmap)); |
| 163 } |
| 164 |
| 165 return controller_model; |
| 166 } |
| 167 |
| 168 } // namespace vr_shell |
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