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57 lines
2.0 KiB
Plaintext
57 lines
2.0 KiB
Plaintext
// 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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module media.mojom;
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// An interface to query output protection status and enable output protection
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// on links that support it.
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interface OutputProtection {
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enum ProtectionType {
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NONE = 0,
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HDCP = 1,
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};
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// Video output link types.
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enum LinkType {
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NONE = 0,
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UNKNOWN = 1,
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INTERNAL = 2,
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VGA = 4,
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HDMI = 8,
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DVI = 16,
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DISPLAYPORT = 32,
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NETWORK = 64,
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};
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// Queries link status and protection status.
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// Clients need to query status periodically in order to detect changes.
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//
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// - success: Whether the query succeeded. If false, values of |link_mask| and
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// |protection_mask| should be ignored.
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// - link_mask: The type of connected output links, which is a bit-mask of the
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// LinkType values.
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// - protection_mask: The type of enabled protections, which is a bit-mask of
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// the ProtectionType values.
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QueryStatus() => (bool success, uint32 link_mask, uint32 protection_mask);
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// Sets desired protection methods.
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//
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// When the desired protection method(s) have been applied to all applicable
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// output links, the relevant bit(s) of the |protection_mask| returned by
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// QueryStatus() will be set. Otherwise, the relevant bit(s) of
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// |protection_mask| will not be set; there is no separate error code or
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// callback.
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//
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// Protections will be disabled if no longer desired by all instances.
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//
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// - desired_protection_mask: The desired protection methods, which
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// is a bit-mask of the ProtectionType values.
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// - success: True when the protection request has been made. This may be
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// before the protection have actually been applied. Call QueryStatus() to
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// get protection status. False if it failed to make the protection request,
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// and in this case there is no need to call QueryStatus().
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EnableProtection(uint32 desired_protection_mask) => (bool success);
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};
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