1/*
2 * Copyright (C) 2009 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
17#ifndef UTILS_H_
18
19#define UTILS_H_
20
21#include <media/stagefright/foundation/AString.h>
22#include <stdint.h>
23#include <utils/Errors.h>
24#include <utils/RefBase.h>
25#include <system/audio.h>
26#include <media/BufferingSettings.h>
27#include <media/MediaPlayerInterface.h>
28
29namespace android {
30
31struct AMessage;
32status_t convertMetaDataToMessage(
33        const sp<MetaData> &meta, sp<AMessage> *format);
34void convertMessageToMetaData(
35        const sp<AMessage> &format, sp<MetaData> &meta);
36
37// Returns a pointer to the next NAL start code in buffer of size |length| starting at |data|, or
38// a pointer to the end of the buffer if the start code is not found.
39// TODO: combine this with avc_utils::getNextNALUnit
40const uint8_t *findNextNalStartCode(const uint8_t *data, size_t length);
41
42AString MakeUserAgent();
43
44// Convert a MIME type to a AudioSystem::audio_format
45status_t mapMimeToAudioFormat(audio_format_t& format, const char* mime);
46
47// Convert a aac profile to a AudioSystem::audio_format
48void mapAACProfileToAudioFormat(audio_format_t& format, uint64_t eAacProfile);
49
50// Send information from MetaData to the HAL via AudioSink
51status_t sendMetaDataToHal(sp<MediaPlayerBase::AudioSink>& sink, const sp<MetaData>& meta);
52
53// Check whether the stream defined by meta can be offloaded to hardware
54bool canOffloadStream(const sp<MetaData>& meta, bool hasVideo,
55                      bool isStreaming, audio_stream_type_t streamType);
56
57AString uriDebugString(const AString &uri, bool incognito = false);
58
59struct HLSTime {
60    int32_t mSeq;
61    int64_t mTimeUs;
62    sp<AMessage> mMeta;
63
64    explicit HLSTime(const sp<AMessage> &meta = NULL);
65    int64_t getSegmentTimeUs() const;
66};
67
68bool operator <(const HLSTime &t0, const HLSTime &t1);
69
70// read and write various object to/from AMessage
71
72void writeToAMessage(const sp<AMessage> &msg, const AudioPlaybackRate &rate);
73void readFromAMessage(const sp<AMessage> &msg, AudioPlaybackRate *rate /* nonnull */);
74
75void writeToAMessage(const sp<AMessage> &msg, const AVSyncSettings &sync, float videoFpsHint);
76void readFromAMessage(
77        const sp<AMessage> &msg, AVSyncSettings *sync /* nonnull */, float *videoFps /* nonnull */);
78
79void writeToAMessage(const sp<AMessage> &msg, const BufferingSettings &buffering);
80void readFromAMessage(const sp<AMessage> &msg, BufferingSettings *buffering /* nonnull */);
81
82AString nameForFd(int fd);
83}  // namespace android
84
85#endif  // UTILS_H_
86