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thumbnail.go
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/
thumbnail.go
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// Copyright (C) 2017 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package resolve
import (
"context"
"fmt"
"github.com/google/gapid/core/image"
"github.com/google/gapid/gapis/api"
"github.com/google/gapid/gapis/database"
"github.com/google/gapid/gapis/messages"
"github.com/google/gapid/gapis/service"
"github.com/google/gapid/gapis/service/path"
)
// Thumbnail resolves and returns the thumbnail from the path p.
func Thumbnail(ctx context.Context, p *path.Thumbnail, r *path.ResolveConfig) (*image.Info, error) {
switch parent := p.Parent().(type) {
case *path.Command:
return CommandThumbnail(ctx, p.DesiredMaxWidth, p.DesiredMaxHeight, p.DesiredFormat, p.DisableOptimization, parent, r)
case *path.CommandTreeNode:
return CommandTreeNodeThumbnail(ctx, p.DesiredMaxWidth, p.DesiredMaxHeight, p.DesiredFormat, p.DisableOptimization, parent, r)
case *path.ResourceData:
return ResourceDataThumbnail(ctx, p.DesiredMaxWidth, p.DesiredMaxHeight, p.DesiredFormat, parent, r)
default:
return nil, fmt.Errorf("Unexpected Thumbnail parent %T", parent)
}
}
// CommandThumbnail resolves and returns the thumbnail for the framebuffer at p.
func CommandThumbnail(
ctx context.Context,
w, h uint32,
f *image.Format,
noOpt bool,
p *path.Command,
r *path.ResolveConfig) (*image.Info, error) {
imageInfoPath, err := FramebufferAttachment(ctx,
&service.ReplaySettings{
DisableReplayOptimization: noOpt,
Device: r.GetReplayDevice(),
},
p,
api.FramebufferAttachment_Color0,
&service.RenderSettings{
MaxWidth: w,
MaxHeight: h,
DrawMode: service.DrawMode_NORMAL,
},
&service.UsageHints{
Preview: true,
},
r,
)
if err != nil {
return nil, err
}
var boxedImageInfo interface{}
if f != nil {
boxedImageInfo, err = Get(ctx, imageInfoPath.As(f).Path(), r)
} else {
boxedImageInfo, err = Get(ctx, imageInfoPath.Path(), r)
}
if err != nil {
return nil, err
}
return boxedImageInfo.(*image.Info), nil
}
// CommandTreeNodeThumbnail resolves and returns the thumbnail for the framebuffer at p.
func CommandTreeNodeThumbnail(
ctx context.Context,
w, h uint32,
f *image.Format,
noOpt bool,
p *path.CommandTreeNode,
r *path.ResolveConfig) (*image.Info, error) {
boxedCmdTree, err := database.Resolve(ctx, p.Tree.ID())
if err != nil {
return nil, err
}
cmdTree := boxedCmdTree.(*commandTree)
item, absID := cmdTree.index(p.Indices)
switch item := item.(type) {
case api.CmdIDGroup:
thumbnail := []uint64{uint64(item.Range.Last())}
if userData, ok := item.UserData.(*CmdGroupData); ok {
thumbnail = []uint64{uint64(userData.Representation)}
} else if len(absID) > 0 {
thumbnail = append(absID, uint64(item.Range.Last()))
}
return CommandThumbnail(ctx, w, h, f, noOpt, cmdTree.path.Capture.Command(thumbnail[0], thumbnail[1:]...), r)
case api.SubCmdIdx:
return CommandThumbnail(ctx, w, h, f, noOpt, cmdTree.path.Capture.Command(uint64(item[0]), item[1:]...), r)
case api.SubCmdRoot:
return CommandThumbnail(ctx, w, h, f, noOpt, cmdTree.path.Capture.Command(uint64(item.Id[0]), item.Id[1:]...), r)
default:
panic(fmt.Errorf("Unexpected type: %T", item))
}
}
// ResourceDataThumbnail resolves and returns the thumbnail for the resource at p.
func ResourceDataThumbnail(ctx context.Context, w, h uint32, f *image.Format, p *path.ResourceData, r *path.ResolveConfig) (*image.Info, error) {
obj, err := ResolveInternal(ctx, p, r)
if err != nil {
return nil, err
}
t, ok := obj.(image.Thumbnailer)
if !ok {
return nil, fmt.Errorf("Type %T does not support thumbnailing", obj)
}
img, err := t.Thumbnail(ctx, w, h, 1)
if err != nil {
return nil, err
}
if img == nil || img.Format == nil || img.Bytes == nil {
return nil, &service.ErrDataUnavailable{Reason: messages.ErrNoTextureData("")}
}
if f != nil {
// Convert the image to the desired format.
if img.Format.Key() != f.Key() {
img, err = img.Convert(ctx, f)
if err != nil {
return nil, err
}
}
}
// Image format supports resizing. See if the image should be.
scaleX, scaleY := float32(1), float32(1)
if w > 0 && img.Width > w {
scaleX = float32(w) / float32(img.Width)
}
if h > 0 && img.Height > h {
scaleY = float32(h) / float32(img.Height)
}
scale := scaleX // scale := min(scaleX, scaleY)
if scale > scaleY {
scale = scaleY
}
targetWidth := uint32(float32(img.Width) * scale)
targetHeight := uint32(float32(img.Height) * scale)
// Prevent scaling to zero size.
if targetWidth == 0 {
targetWidth = 1
}
if targetHeight == 0 {
targetHeight = 1
}
if targetWidth == img.Width && targetHeight == img.Height {
// Image is already at requested target size.
return img, err
}
return img.Resize(ctx, targetWidth, targetHeight, 1)
}