| // 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. |
| |
| #include <fbl/algorithm.h> |
| #include <math.h> |
| #include <zircon/device/display-controller.h> |
| |
| #include "utils.h" |
| #include "virtual-layer.h" |
| |
| static constexpr uint32_t kSrcFrameBouncePeriod = 90; |
| static constexpr uint32_t kDestFrameBouncePeriod = 60; |
| static constexpr uint32_t kRotationPeriod = 24; |
| static constexpr uint32_t kScalePeriod = 45; |
| |
| static uint32_t get_fg_color() { |
| static uint32_t layer_count = 0; |
| static uint32_t colors[] = { |
| 0xffff0000, 0xff00ff00, 0xff0000ff, |
| }; |
| return colors[layer_count++ % fbl::count_of(colors)]; |
| } |
| |
| // Checks if two rectangles intersect, and if so, returns their intersection. |
| static bool compute_intersection(const frame_t& a, const frame_t& b, frame_t* intersection) { |
| uint32_t left = fbl::max(a.x_pos, b.x_pos); |
| uint32_t right = fbl::min(a.x_pos + a.width, b.x_pos + b.width); |
| uint32_t top = fbl::max(a.y_pos, b.y_pos); |
| uint32_t bottom = fbl::min(a.y_pos + a.height, b.y_pos + b.height); |
| |
| if (left >= right || top >= bottom) { |
| return false; |
| } |
| |
| intersection->x_pos = left; |
| intersection->y_pos = top; |
| intersection->width = right - left; |
| intersection->height = bottom - top; |
| |
| return true; |
| } |
| |
| static uint32_t interpolate_scaling(uint32_t x, uint32_t frame_num) { |
| return x / 2 + interpolate(x / 2, frame_num, kScalePeriod); |
| } |
| |
| VirtualLayer::VirtualLayer(Display* display) { |
| displays_.push_back(display); |
| width_ = display->mode().horizontal_resolution; |
| height_ = display->mode().vertical_resolution; |
| } |
| |
| VirtualLayer::VirtualLayer(const fbl::Vector<Display>& displays) { |
| for (auto& d : displays) { |
| displays_.push_back(&d); |
| } |
| |
| width_ = 0; |
| height_ = 0; |
| for (auto* d : displays_) { |
| width_ += d->mode().horizontal_resolution; |
| height_ = fbl::max(height_, d->mode().vertical_resolution); |
| } |
| } |
| |
| layer_t* VirtualLayer::CreateLayer(zx_handle_t dc_handle) { |
| layers_.push_back(layer_t()); |
| layers_[layers_.size() - 1].active = false; |
| |
| fuchsia_hardware_display_ControllerCreateLayerRequest create_layer_msg; |
| create_layer_msg.hdr.ordinal = fuchsia_hardware_display_ControllerCreateLayerOrdinal; |
| |
| fuchsia_hardware_display_ControllerCreateLayerResponse create_layer_rsp; |
| zx_channel_call_args_t call_args = {}; |
| call_args.wr_bytes = &create_layer_msg; |
| call_args.rd_bytes = &create_layer_rsp; |
| call_args.wr_num_bytes = sizeof(create_layer_msg); |
| call_args.rd_num_bytes = sizeof(create_layer_rsp); |
| uint32_t actual_bytes, actual_handles; |
| if (zx_channel_call(dc_handle, 0, ZX_TIME_INFINITE, &call_args, |
| &actual_bytes, &actual_handles) != ZX_OK) { |
| printf("Creating layer failed\n"); |
| return nullptr; |
| } |
| if (create_layer_rsp.res != ZX_OK) { |
| printf("Creating layer failed\n"); |
| return nullptr; |
| } |
| layers_[layers_.size() - 1].id = create_layer_rsp.layer_id; |
| |
| return &layers_[layers_.size() - 1]; |
| } |
| |
| PrimaryLayer::PrimaryLayer(Display* display) : VirtualLayer(display) { |
| image_format_ = display->format(); |
| } |
| |
| PrimaryLayer::PrimaryLayer(const fbl::Vector<Display>& displays) : VirtualLayer(displays) { |
| image_format_ = displays_[0]->format(); |
| SetImageDimens(width_, height_); |
| } |
| |
| bool PrimaryLayer::Init(zx_handle_t dc_handle) { |
| if ((displays_.size() > 1 || rotates_) && scaling_) { |
| printf("Unsupported config\n"); |
| return false; |
| } |
| uint32_t fg_color = get_fg_color(); |
| uint32_t bg_color = alpha_enable_ ? 0x3fffffff : 0xffffffff; |
| |
| images_[0] = Image::Create( |
| dc_handle, image_width_, image_height_, image_format_, fg_color, bg_color, |
| intel_y_tiling_); |
| if (layer_flipping_) { |
| images_[1] = Image::Create( |
| dc_handle, image_width_, image_height_, image_format_, fg_color, bg_color, |
| intel_y_tiling_); |
| } else { |
| images_[0]->Render(-1, -1); |
| } |
| |
| if (!images_[0] || (layer_flipping_ && !images_[1])) { |
| return false; |
| } |
| |
| for (unsigned i = 0; i < displays_.size(); i++) { |
| layer_t* layer = CreateLayer(dc_handle); |
| if (layer == nullptr) { |
| return false; |
| } |
| |
| if (!images_[0]->Import(dc_handle, &layer->import_info[0])) { |
| return false; |
| } |
| if (layer_flipping_) { |
| if (!images_[1]->Import(dc_handle, &layer->import_info[1])) { |
| return false; |
| } |
| } else { |
| zx_object_signal(layer->import_info[alt_image_].events[WAIT_EVENT], |
| 0, ZX_EVENT_SIGNALED); |
| } |
| |
| fuchsia_hardware_display_ControllerSetLayerPrimaryConfigRequest config; |
| config.hdr.ordinal = fuchsia_hardware_display_ControllerSetLayerPrimaryConfigOrdinal; |
| config.layer_id = layer->id; |
| images_[0]->GetConfig(&config.image_config); |
| |
| if (zx_channel_write(dc_handle, 0, &config, sizeof(config), nullptr, 0) != ZX_OK) { |
| printf("Setting layer config failed\n"); |
| return false; |
| } |
| |
| fuchsia_hardware_display_ControllerSetLayerPrimaryAlphaRequest alpha_config; |
| alpha_config.hdr.ordinal = fuchsia_hardware_display_ControllerSetLayerPrimaryAlphaOrdinal; |
| alpha_config.layer_id = layer->id; |
| alpha_config.mode = alpha_enable_ ? fuchsia_hardware_display_AlphaMode_HW_MULTIPLY |
| : fuchsia_hardware_display_AlphaMode_DISABLE; |
| alpha_config.val = alpha_val_; |
| |
| if (zx_channel_write(dc_handle, 0, |
| &alpha_config, sizeof(alpha_config), nullptr, 0) != ZX_OK) { |
| printf("Setting layer alpha config failed\n"); |
| return false; |
| } |
| } |
| |
| StepLayout(0); |
| if (!layer_flipping_) { |
| SetLayerImages(dc_handle, false); |
| } |
| if (!(pan_src_ || pan_dest_)) { |
| SetLayerPositions(dc_handle); |
| } |
| |
| return true; |
| } |
| |
| void PrimaryLayer::StepLayout(int32_t frame_num) { |
| if (layer_flipping_) { |
| alt_image_ = frame_num % 2; |
| } |
| if (pan_src_) { |
| src_frame_.x_pos = |
| interpolate(image_width_ - src_frame_.width, frame_num, kSrcFrameBouncePeriod); |
| |
| } |
| if (pan_dest_) { |
| dest_frame_.x_pos = |
| interpolate(width_ - dest_frame_.width, frame_num, kDestFrameBouncePeriod); |
| } |
| if (rotates_) { |
| switch ((frame_num / kRotationPeriod) % 4) { |
| case 0: |
| rotation_ = fuchsia_hardware_display_Transform_IDENTITY; |
| break; |
| case 1: |
| rotation_ = fuchsia_hardware_display_Transform_ROT_90; |
| break; |
| case 2: |
| rotation_ = fuchsia_hardware_display_Transform_ROT_180; |
| break; |
| case 3: |
| rotation_ = fuchsia_hardware_display_Transform_ROT_270; |
| break; |
| } |
| |
| if (frame_num % kRotationPeriod == 0 && frame_num != 0) { |
| uint32_t tmp = dest_frame_.width; |
| dest_frame_.width = dest_frame_.height; |
| dest_frame_.height = tmp; |
| } |
| } |
| |
| frame_t display = {}; |
| for (unsigned i = 0; i < displays_.size(); i++) { |
| display.height = displays_[i]->mode().vertical_resolution; |
| display.width = displays_[i]->mode().horizontal_resolution; |
| |
| // Calculate the portion of the dest frame which shows up on this display |
| if (compute_intersection(display, dest_frame_, &layers_[i].dest)) { |
| // Find the subset of the src region which shows up on this display |
| if (rotation_ == fuchsia_hardware_display_Transform_IDENTITY || |
| rotation_ == fuchsia_hardware_display_Transform_ROT_180) { |
| if (!scaling_) { |
| layers_[i].src.x_pos = |
| src_frame_.x_pos + (layers_[i].dest.x_pos - dest_frame_.x_pos); |
| layers_[i].src.y_pos = src_frame_.y_pos; |
| layers_[i].src.width = layers_[i].dest.width; |
| layers_[i].src.height = layers_[i].dest.height; |
| } else { |
| layers_[i].src.x_pos = src_frame_.x_pos + interpolate_scaling( |
| layers_[i].dest.x_pos - dest_frame_.x_pos, frame_num); |
| layers_[i].src.y_pos = src_frame_.y_pos; |
| layers_[i].src.width = interpolate_scaling(layers_[i].dest.width, frame_num); |
| layers_[i].src.height = interpolate_scaling(layers_[i].dest.height, frame_num); |
| } |
| } else { |
| layers_[i].src.x_pos = src_frame_.x_pos; |
| layers_[i].src.y_pos = |
| src_frame_.y_pos + (layers_[i].dest.y_pos - dest_frame_.y_pos); |
| layers_[i].src.height = layers_[i].dest.width; |
| layers_[i].src.width = layers_[i].dest.height; |
| } |
| |
| // Put the dest frame coordinates in the display's coord space |
| layers_[i].dest.x_pos -= display.x_pos; |
| layers_[i].active = true; |
| } else { |
| layers_[i].active = false; |
| } |
| |
| display.x_pos += display.width; |
| } |
| |
| if (layer_toggle_) { |
| for (auto& layer : layers_) { |
| layer.active = !(frame_num % 2); |
| } |
| } |
| } |
| |
| void PrimaryLayer::SendLayout(zx_handle_t channel) { |
| if (layer_flipping_) { |
| SetLayerImages(channel, alt_image_); |
| } |
| if (scaling_ || pan_src_ || pan_dest_) { |
| SetLayerPositions(channel); |
| } |
| } |
| |
| bool PrimaryLayer::WaitForReady() { |
| return Wait(SIGNAL_EVENT); |
| } |
| |
| void PrimaryLayer::Render(int32_t frame_num) { |
| if (!layer_flipping_) { |
| return; |
| } |
| images_[alt_image_]->Render(frame_num < 2 ? 0 : frame_num - 2, frame_num); |
| for (auto& layer : layers_) { |
| zx_object_signal(layer.import_info[alt_image_].events[WAIT_EVENT], 0, ZX_EVENT_SIGNALED); |
| } |
| } |
| |
| void PrimaryLayer::SetLayerPositions(zx_handle_t dc_handle) { |
| fuchsia_hardware_display_ControllerSetLayerPrimaryPositionRequest msg; |
| msg.hdr.ordinal = fuchsia_hardware_display_ControllerSetLayerPrimaryPositionOrdinal; |
| |
| for (auto& layer : layers_) { |
| msg.layer_id = layer.id; |
| msg.transform = rotation_; |
| |
| msg.src_frame.width = layer.src.width; |
| msg.src_frame.height = layer.src.height; |
| msg.src_frame.x_pos = layer.src.x_pos; |
| msg.src_frame.y_pos = layer.src.y_pos; |
| |
| msg.dest_frame.width = layer.dest.width; |
| msg.dest_frame.height = layer.dest.height; |
| msg.dest_frame.x_pos = layer.dest.x_pos; |
| msg.dest_frame.y_pos = layer.dest.y_pos; |
| |
| if (zx_channel_write(dc_handle, 0, &msg, sizeof(msg), nullptr, 0) != ZX_OK) { |
| ZX_ASSERT(false); |
| } |
| } |
| } |
| |
| void VirtualLayer::SetLayerImages(zx_handle_t dc_handle, bool alt_image) { |
| fuchsia_hardware_display_ControllerSetLayerImageRequest msg; |
| msg.hdr.ordinal = fuchsia_hardware_display_ControllerSetLayerImageOrdinal; |
| |
| for (auto& layer : layers_) { |
| msg.layer_id = layer.id; |
| msg.image_id = layer.import_info[alt_image].id; |
| msg.wait_event_id = layer.import_info[alt_image].event_ids[WAIT_EVENT]; |
| msg.signal_event_id = layer.import_info[alt_image].event_ids[SIGNAL_EVENT]; |
| |
| if (zx_channel_write(dc_handle, 0, &msg, sizeof(msg), nullptr, 0) != ZX_OK) { |
| ZX_ASSERT(false); |
| } |
| } |
| } |
| |
| bool PrimaryLayer::Wait(uint32_t idx) { |
| zx_time_t deadline = zx_deadline_after(ZX_MSEC(100)); |
| for (auto& layer : layers_) { |
| uint32_t observed; |
| if (!layer.active) { |
| continue; |
| } |
| zx_handle_t event = layer.import_info[alt_image_].events[idx]; |
| zx_status_t res; |
| if ((res = zx_object_wait_one(event, ZX_EVENT_SIGNALED, deadline, &observed)) == ZX_OK) { |
| if (layer_flipping_) { |
| zx_object_signal(event, ZX_EVENT_SIGNALED, 0); |
| } |
| } else { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| CursorLayer::CursorLayer(Display* display) : VirtualLayer(display) { } |
| |
| CursorLayer::CursorLayer(const fbl::Vector<Display>& displays) : VirtualLayer(displays) { } |
| |
| bool CursorLayer::Init(zx_handle_t dc_handle) { |
| fuchsia_hardware_display_CursorInfo info = displays_[0]->cursor(); |
| uint32_t bg_color = 0xffffffff; |
| image_ = Image::Create( |
| dc_handle, info.width, info.height, info.pixel_format, get_fg_color(), bg_color, false); |
| if (!image_) { |
| return false; |
| } |
| image_->Render(-1, -1); |
| |
| for (unsigned i = 0; i < displays_.size(); i++) { |
| layer_t* layer = CreateLayer(dc_handle); |
| if (layer == nullptr) { |
| return false; |
| } |
| |
| layer->active = true; |
| if (!image_->Import(dc_handle, &layer->import_info[0])) { |
| return false; |
| } |
| zx_object_signal(layer->import_info[0].events[WAIT_EVENT], 0, ZX_EVENT_SIGNALED); |
| |
| fuchsia_hardware_display_ControllerSetLayerCursorConfigRequest config; |
| config.hdr.ordinal = fuchsia_hardware_display_ControllerSetLayerCursorConfigOrdinal; |
| config.layer_id = layer->id; |
| config.image_config.height = info.height; |
| config.image_config.width = info.width; |
| config.image_config.pixel_format = info.pixel_format; |
| config.image_config.type = IMAGE_TYPE_SIMPLE; |
| |
| if (zx_channel_write(dc_handle, 0, &config, sizeof(config), nullptr, 0) != ZX_OK) { |
| printf("Setting layer config failed\n"); |
| return false; |
| } |
| } |
| |
| SetLayerImages(dc_handle, false); |
| |
| return true; |
| } |
| |
| void CursorLayer::StepLayout(int32_t frame_num) { |
| fuchsia_hardware_display_CursorInfo info = displays_[0]->cursor(); |
| |
| x_pos_ = interpolate(width_ + info.width, frame_num, kDestFrameBouncePeriod) - info.width; |
| y_pos_ = interpolate(height_ + info.height, frame_num, kDestFrameBouncePeriod) - info.height; |
| } |
| |
| void CursorLayer::SendLayout(zx_handle_t dc_handle) { |
| fuchsia_hardware_display_ControllerSetLayerCursorPositionRequest msg; |
| msg.hdr.ordinal = fuchsia_hardware_display_ControllerSetLayerCursorPositionOrdinal; |
| |
| uint32_t display_start = 0; |
| for (unsigned i = 0; i < displays_.size(); i++) { |
| msg.layer_id = layers_[i].id; |
| msg.x = x_pos_ - display_start; |
| msg.y = y_pos_; |
| |
| if (zx_channel_write(dc_handle, 0, &msg, sizeof(msg), nullptr, 0) != ZX_OK) { |
| ZX_ASSERT(false); |
| } |
| |
| display_start += displays_[i]->mode().horizontal_resolution; |
| } |
| } |
| |
| ColorLayer::ColorLayer(Display* display) : VirtualLayer(display) { } |
| |
| ColorLayer::ColorLayer(const fbl::Vector<Display>& displays) : VirtualLayer(displays) { } |
| |
| bool ColorLayer::Init(zx_handle_t dc_handle) { |
| for (unsigned i = 0; i < displays_.size(); i++) { |
| layer_t* layer = CreateLayer(dc_handle); |
| if (layer == nullptr) { |
| return false; |
| } |
| |
| layer->active = true; |
| |
| constexpr uint32_t kColorLayerFormat = ZX_PIXEL_FORMAT_ARGB_8888; |
| uint32_t kColorLayerColor = get_fg_color(); |
| |
| uint32_t size = sizeof(fuchsia_hardware_display_ControllerSetLayerColorConfigRequest) + |
| FIDL_ALIGN(ZX_PIXEL_FORMAT_BYTES(kColorLayerFormat)); |
| uint8_t data[size]; |
| |
| auto config = |
| reinterpret_cast<fuchsia_hardware_display_ControllerSetLayerColorConfigRequest*>(data); |
| config->hdr.ordinal = fuchsia_hardware_display_ControllerSetLayerColorConfigOrdinal; |
| config->layer_id = layer->id; |
| config->pixel_format = kColorLayerFormat; |
| config->color_bytes.count = ZX_PIXEL_FORMAT_BYTES(kColorLayerFormat); |
| config->color_bytes.data = reinterpret_cast<void*>(FIDL_ALLOC_PRESENT); |
| |
| *reinterpret_cast<uint32_t*>(config + 1) = kColorLayerColor; |
| |
| if (zx_channel_write(dc_handle, 0, data, size, nullptr, 0) != ZX_OK) { |
| printf("Setting layer config failed\n"); |
| return false; |
| } |
| } |
| |
| return true; |
| } |