History

Chih-Hung Hsieh 65ab67312b Fix performance-for-range-copy warnings Bug: 30413223 Test: make with WITH_TIDY=1 DEFAULT_GLOBAL_TIDY_CHECKS=-,performance Change-Id: I1b76a22eab100a31e77048626e48169fe7eeaf92		2018-12-17 19:57:21 +00:00
..
vts/functional	Fix performance-for-range-copy warnings	2018-12-17 19:57:21 +00:00
Android.bp	Update Makefiles Missed In Previous Commits	2018-03-19 16:37:46 -07:00
ICryptoFactory.hal	Fix incorrect comment in ICryptoFactory.hal	2018-02-01 12:26:43 -08:00
IDrmFactory.hal	Create drm 1.1 HAL	2018-01-21 16:06:49 -08:00
IDrmPlugin.hal	Revert "Revert "Fix MediaDrm security level APIs""	2018-02-11 18:58:21 +00:00
README.md	DRM 1.1: Add VINTF doc	2018-10-25 16:50:06 -07:00
types.hal	Add new secure stop methods	2018-01-29 14:27:29 -08:00

README.md

VINTF Device Manifest

In Android Pie, an <fqname> tag was introduced to be able to express multiple different versions of the same HAL in VINTF manifests (for DRM) in device manifest. For devices launching with previous versions of Android and upgrading to Android Pie, the device manifest must not use <fqname> to satisfy requirements for non-optional HALs, because older version of libvintf do not recognize it, causing errors during OTA update.

Assuming that the HAL provides @1.0::I*/default, @1.1::I*/clearkey and @1.1::I*/foo instances:

Devices upgrading to Android Pie

`target-level=1` or `target-level=2`

FCM (framework compatibility matrix) version 2 (released in Android Oreo MR1) requires DRM 1.0. If the new device manifest has Target FCM Version (i.e. target-level) 1 or 2, it should use the following snippet:

<hal format="hidl">
    <name>android.hardware.drm</name>
    <transport>hwbinder</transport>
    <version>1.0</version>
    <interface>
        <name>ICryptoFactory</name>
        <instance>default</instance>
    </interface>
    <interface>
        <name>IDrmFactory</name>
        <instance>default</instance>
    </interface>
    <fqname>@1.1::ICryptoFactory/clearkey</fqname>
    <fqname>@1.1::IDrmFactory/clearkey</fqname>
    <fqname>@1.1::ICryptoFactory/foo</fqname>
    <fqname>@1.1::IDrmFactory/foo</fqname>
</hal>

`target-level=3`

FCM (framework compatibility matrix) version 3 (released in Android Pie) requires DRM 1.1. If the new device manifest has Target FCM Version (i.e. target-level) 3, it should use the following snippet:

<hal format="hidl">
    <name>android.hardware.drm</name>
    <transport>hwbinder</transport>
    <version>1.1</version>
    <interface>
        <name>ICryptoFactory</name>
        <instance>clearkey</instance>
        <instance>foo</instance>
    </interface>
    <interface>
        <name>IDrmFactory</name>
        <instance>clearkey</instance>
        <instance>foo</instance>
    </interface>
    <fqname>@1.0::ICryptoFactory/default</fqname>
    <fqname>@1.0::IDrmFactory/default</fqname>
</hal>

Devices launching with Android Pie

If you have a new device launched with Android Pie (no OTA), both of the aforementioned snippets can be used. Besides, it is recommended to use the new, clearer format:

<hal format="hidl">
    <name>android.hardware.drm</name>
    <transport>hwbinder</transport>
    <fqname>@1.0::ICryptoFactory/default</fqname>
    <fqname>@1.0::IDrmFactory/default</fqname>
    <fqname>@1.1::ICryptoFactory/clearkey</fqname>
    <fqname>@1.1::IDrmFactory/clearkey</fqname>
    <fqname>@1.1::ICryptoFactory/foo</fqname>
    <fqname>@1.1::IDrmFactory/foo</fqname>
</hal>