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// Copyright (C) 2025 The Android Open Source Project
//
// 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 filesystem
import (
"path/filepath"
"strconv"
"strings"
"android/soong/android"
)
type recoveryBackgroundPictures struct {
android.ModuleBase
properties recoveryBackgroundPicturesProperties
}
type recoveryBackgroundPicturesProperties struct {
Image_width *int64
Fonts []string `android:"path"`
Resources []string `android:"path"`
}
func RecoveryBackgroundPicturesFactory() android.Module {
module := &recoveryBackgroundPictures{}
android.InitAndroidArchModule(module, android.DeviceSupported, android.MultilibCommon)
module.AddProperties(&module.properties)
return module
}
func (f *recoveryBackgroundPictures) InstallInRoot() bool {
return true
}
var (
recoveryBackgroundTextList = []string{
"recovery_installing",
"recovery_installing_security",
"recovery_erasing",
"recovery_error",
"recovery_no_command",
}
recoveryWipeDataTextList = []string{
"recovery_cancel_wipe_data",
"recovery_factory_data_reset",
"recovery_try_again",
"recovery_wipe_data_menu_header",
"recovery_wipe_data_confirmation",
}
)
func (f *recoveryBackgroundPictures) GenerateAndroidBuildActions(ctx android.ModuleContext) {
rule := android.NewRuleBuilder(pctx, ctx).
Sbox(android.PathForModuleOut(ctx, "images"),
android.PathForModuleOut(ctx, "gen.sbox.textproto")).
SandboxInputs()
fontDir, resDir := f.assembleFontsAndRes(ctx, rule)
var images android.Paths
for _, name := range recoveryBackgroundTextList {
image := f.addImageGenRule(ctx, rule, fontDir, resDir, name, true)
images = append(images, image)
}
for _, name := range recoveryWipeDataTextList {
image := f.addImageGenRule(ctx, rule, fontDir, resDir, name, false)
images = append(images, image)
}
rule.Build("recovery_background_images", "recovery_background_images")
for _, image := range images {
ctx.InstallFile(android.PathForModuleInstall(ctx, "res", "images"), image.Base(), image)
}
}
// Copies the fonts and resources to a well known location inside the sandbox.
// Returns the assembled font and res dir inside the sandbox.
func (f *recoveryBackgroundPictures) assembleFontsAndRes(ctx android.ModuleContext, rule *android.RuleBuilder) (android.Path, android.Path) {
fontDir := android.PathForModuleOut(ctx, "images", "fonts")
fonts := android.PathsForModuleSrc(ctx, f.properties.Fonts)
// Assemble the fonts at root.
cmd := rule.Command()
cmd.Textf("mkdir -p %s", cmd.PathForInput(fontDir)).
Textf("&& cp -t %s", cmd.PathForInput(fontDir))
for _, f := range fonts {
cmd.Input(f)
}
// Assemeble the res by preserving rel paths.
resDir := android.PathForModuleOut(ctx, "images", "res")
cmd.Textf("&& mkdir -p %s", cmd.PathForInput(resDir))
for _, res := range android.PathsForModuleSrc(ctx, f.properties.Resources) {
relDir := filepath.Dir(res.Rel())
cmd.Textf("&& mkdir -p %s/%s", cmd.PathForInput(resDir), relDir).
Textf("&& cp %s %s/%s", cmd.PathForInput(res), cmd.PathForInput(resDir), relDir).
Implicit(res)
}
return fontDir, resDir
}
// Adds rules to generate recovery images using RecoveryImageGenerator.jar
// Returns the paths of the generated recovery images.
func (f *recoveryBackgroundPictures) addImageGenRule(ctx android.ModuleContext,
rule *android.RuleBuilder,
fontDir android.Path,
resDir android.Path,
textName string,
centerAlign bool) android.WritablePath {
out := android.PathForModuleOut(ctx, "images", strings.TrimPrefix(textName, "recovery_")+"_text.png")
generator := ctx.Config().HostJavaToolPath(ctx, "RecoveryImageGenerator.jar")
cmd := rule.Command()
cmd.Textf("java -jar").Input(generator).
FlagWithArg("--image_width ", strconv.FormatInt(*(f.properties.Image_width), 10)).
FlagWithArg("--text_name ", textName).
FlagWithArg("--font_dir ", cmd.PathForInput(fontDir)).
FlagWithArg("--resource_dir ", cmd.PathForInput(resDir)).
Implicits(android.PathsForModuleSrc(ctx, f.properties.Resources))
if centerAlign {
cmd.Flag("--center_alignment ")
}
cmd.FlagWithOutput("--output_file ", out)
rule.Command().BuiltTool("zopflipng").
ImplicitTool(ctx.Config().HostCcSharedLibPath(ctx, "libc++")).
Textf(" -y --iterations=1 --filters=0 %s %s > /dev/null", cmd.PathForInput(out), cmd.PathForInput(out))
return out
}
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