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authorTianjie <xunchang@google.com>2020-12-21 04:46:11 +0100
committerTianjie <xunchang@google.com>2020-12-21 05:00:30 +0100
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tree49409231437647cacced72d3c573b9fff0b7ec7c /tools/image_generator
parentMerge "Do not call exit() immediately after serving sideload" (diff)
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diff --git a/tools/image_generator/README.md b/tools/image_generator/README.md
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@@ -19,3 +19,13 @@ emulators with different dpi.
4. `resourceDirectory`: The resource directory that contains all the translated
strings in xml format, e.g. bootable/recovery/tools/recovery_l10n/res/
5. `outputFilename`: Path to the generated image.
+
+# Locales
+Supported locales and background texts are located in
+[tools/recovery_l10n/res/](../recovery_l10n/res/values). For each background text, the tool renders
+a localized image for every supported locale.
+
+Each individual localized image contains an encoded locale header string, and the rendered
+background text. The locale header string is generated by `Locale.forLanguageTag`. And sample
+result include `en-US`, `zh-CN`, etc. These individual images are then concatenated together to
+form the final resource image that locates in res/images, e.g. `install_text.png`