1/*
2 * Copyright (C) 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.hardware.media.omx@1.0;
18
19import android.hardware.media@1.0::types;
20
21/**
22 * Ref: frameworks/av/media/libmedia/aidl/android/IOMXBufferSource.aidl
23 *
24 * IOmxBufferSource is an interface for a listener for certain events from an
25 * IOmxNode instance. Use IOmxNode::setInputSurface() to attach an
26 * IOmxBufferSource instance to an IOmxNode instance.
27 *
28 * @see OMX_STATETYPE in the OpenMax IL standard.
29 */
30interface IOmxBufferSource {
31
32    /**
33     * onOmxExecuting() is invoked when the node state changes to
34     * OMX_StateExecuting state.
35     */
36    oneway onOmxExecuting();
37
38    /**
39     * onOmxIdle() is invoked when the node transitions from OMX_StateExecuting
40     * to OMX_StateIdle.
41     */
42    oneway onOmxIdle();
43
44    /**
45     * onOmxLoaded() is invoked when the node transitions from OMX_StateIdle or
46     * OMX_StateExecuting to OMX_StateLoaded.
47     */
48    oneway onOmxLoaded();
49
50    /**
51     * onInputBufferAdded() is invoked after a new input buffer is added to the
52     * node. This may happen within IOmxNode::allocateSecureBuffer() or
53     * IOmxNode::useBuffer().
54     *
55     * @param[in] buffer is the id of the added buffer.
56     */
57    oneway onInputBufferAdded(BufferId buffer);
58
59    /**
60     * onInputBufferEmptied() is invoked after an input buffer is emptied. This
61     * may happen within IOmxNode::emptyBuffer().
62     *
63     * @param[in] buffer is the id of the emptied buffer.
64     * @param[in] fence is the fence associated with the buffer.
65     */
66    oneway onInputBufferEmptied(BufferId buffer, Fence fence);
67};
68
69