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75 lines
2.9 KiB
Plaintext
75 lines
2.9 KiB
Plaintext
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// Copyright 2017 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 that helps proxy part of ContentDecryptionModule (CDM)
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// functionalities to a different entity, e.g. hardware CDM modules.
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// In general, the interpretation of the method and callback parameters are
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// protocol dependent.
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// CdmProxy implementation is hosted in the GPU process.
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interface CdmProxy {
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// See media/cdm/cdm_proxy.h.
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[Native]
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enum Status;
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// See media/cdm/cdm_proxy.h.
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[Native]
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enum Protocol;
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// See media/cdm/cdm_proxy.h.
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[Native]
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enum Function;
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// Initializes the proxy.
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// If the proxy created a crypto session, then the ID for the crypto session
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// is |crypto_session_id|.
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// |cdm_id| can be used to connect the remote media pipeline and CdmProxy.
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Initialize(associated CdmProxyClient client) => (Status status,
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Protocol protocol,
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uint32 crypto_session_id,
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int32 cdm_id);
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// Processes and updates the state of the proxy.
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// |function| specifies what type of function to use.
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// |crypto_session_id| is a value returned from Initialize() or
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// CreateMediaCryptoSessions().
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// |input_data| is the input data to be processed.
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// |output_data_size| is the expected size of |output_data|. Some protocols
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// require this field in order to determine the size of the output, but some
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// may completely ignore it.
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// The output data is passed back in |output_data|.
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Process(Function function,
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uint32 crypto_session_id,
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array<uint8> input_data,
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uint32 output_data_size) => (Status status,
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array<uint8> output_data);
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// Creates a crypto session for handling media.
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// If extra data has to be passed to further setup the media crypto session,
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// pass the data as |input_data|.
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// |crypto_session_id| is the ID for the crypto session.
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// |output_data| is extra value, if any.
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CreateMediaCryptoSession(array<uint8> input_data) => (
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Status status, uint32 crypto_session_id, uint64 output_data);
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// Sets a key in the proxy.
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// |crypto_session_id| is the crypto session for decryption.
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// |key_id| is the ID of the key.
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// |key_blob| is the opaque key blob for decrypting or decoding.
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SetKey(uint32 crypto_session_id, array<uint8> key_id, array<uint8> key_blob);
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// Removes a key from the proxy.
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// |crypto_session_id| is the crypto session for decryption.
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// |key_id| is the ID of the key.
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RemoveKey(uint32 crypto_session_id, array<uint8> key_id);
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};
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// Client of CdmProxy.
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// CdmProxyClient is running in the fully sandboxed CDM (e.g. utility) process.
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interface CdmProxyClient {
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// Notifies the client that there has been a hardware reset.
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NotifyHardwareReset();
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};
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