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2c5a71e721
This patch should contain all the code we need to run Flutter on Fuchsia's software framebuffer (without text). I haven't actually tried running the code, so I'm sure it doesn't work yet.
91 lines
2.5 KiB
C++
91 lines
2.5 KiB
C++
// Copyright 2016 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "flutter/content_handler/framebuffer_skia.h"
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#include <magenta/syscalls.h>
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#include <utility>
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#include "lib/ftl/logging.h"
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namespace flutter_content_handler {
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namespace {
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struct BackingStoreInfo {
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mx_handle_t vmo;
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uintptr_t buffer;
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size_t size;
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};
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void DidReleaseSurface(void* pixels, void* context) {
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BackingStoreInfo* info = static_cast<BackingStoreInfo*>(context);
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mx_process_vm_unmap(0, info->buffer, info->size);
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mx_handle_close(info->vmo);
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delete info;
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}
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} // namespace
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FramebufferSkia::FramebufferSkia() {}
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FramebufferSkia::~FramebufferSkia() {}
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void FramebufferSkia::Bind(mojo::InterfaceHandle<mojo::Framebuffer> framebuffer,
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mojo::FramebufferInfoPtr info) {
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if (!framebuffer) {
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FTL_LOG(ERROR) << "Failed to bind framebuffer";
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surface_ = nullptr;
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return;
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}
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framebuffer_.Bind(std::move(framebuffer));
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info_ = std::move(info);
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uintptr_t buffer = 0;
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size_t row_bytes = info_->row_bytes;
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size_t size = row_bytes * info_->size->height;
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mx_status_t status =
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mx_process_vm_map(0, info_->vmo.get().value(), 0, size, &buffer,
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MX_VM_FLAG_PERM_READ | MX_VM_FLAG_PERM_WRITE);
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if (status < 0) {
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FTL_LOG(ERROR) << "Cannot map framebuffer (status=" << status << ")";
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return;
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}
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SkColorType sk_color_type;
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SkAlphaType sk_alpha_type;
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switch (info_->format) {
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case mojo::FramebufferFormat::RGB_565:
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sk_color_type = kRGB_565_SkColorType;
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sk_alpha_type = kOpaque_SkAlphaType;
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break;
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case mojo::FramebufferFormat::ARGB_8888:
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sk_color_type = kRGBA_8888_SkColorType;
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sk_alpha_type = kPremul_SkAlphaType;
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break;
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default:
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FTL_LOG(WARNING) << "Unknown color type " << info_->format;
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sk_color_type = kRGB_565_SkColorType;
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sk_alpha_type = kOpaque_SkAlphaType;
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break;
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}
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SkImageInfo image_info = SkImageInfo::Make(
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info_->size->width, info_->size->height, sk_color_type, sk_alpha_type);
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BackingStoreInfo* backing_store_info = new BackingStoreInfo();
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backing_store_info->vmo = info_->vmo.release().value();
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backing_store_info->buffer = buffer;
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backing_store_info->size = size;
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surface_ = SkSurface::MakeRasterDirectReleaseProc(
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image_info, reinterpret_cast<void*>(buffer), row_bytes, DidReleaseSurface,
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backing_store_info);
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}
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} // namespace flutter_content_handler
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