Utils.h revision 83fbbb8f8705445a4d4a9532d17690098f36f50f 
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/MediaPlayerInterface.h>
27
28namespace android {
29
30#define FOURCC(c1, c2, c3, c4) \
31    ((c1) << 24 | (c2) << 16 | (c3) << 8 | (c4))
32
33uint16_t U16_AT(const uint8_t *ptr);
34uint32_t U32_AT(const uint8_t *ptr);
35uint64_t U64_AT(const uint8_t *ptr);
36
37uint16_t U16LE_AT(const uint8_t *ptr);
38uint32_t U32LE_AT(const uint8_t *ptr);
39uint64_t U64LE_AT(const uint8_t *ptr);
40
41uint64_t ntoh64(uint64_t x);
42uint64_t hton64(uint64_t x);
43
44class MetaData;
45struct AMessage;
46status_t convertMetaDataToMessage(
47        const sp<MetaData> &meta, sp<AMessage> *format);
48void convertMessageToMetaData(
49        const sp<AMessage> &format, sp<MetaData> &meta);
50
51AString MakeUserAgent();
52
53// Convert a MIME type to a AudioSystem::audio_format
54status_t mapMimeToAudioFormat(audio_format_t& format, const char* mime);
55
56// Convert a aac profile to a AudioSystem::audio_format
57void mapAACProfileToAudioFormat(audio_format_t& format, uint64_t eAacProfile);
58
59// Send information from MetaData to the HAL via AudioSink
60status_t sendMetaDataToHal(sp<MediaPlayerBase::AudioSink>& sink, const sp<MetaData>& meta);
61
62// Check whether the stream defined by meta can be offloaded to hardware
63bool canOffloadStream(const sp<MetaData>& meta, bool hasVideo,
64                      bool isStreaming, audio_stream_type_t streamType);
65
66AString uriDebugString(const AString &uri, bool incognito = false);
67
68struct HLSTime {
69    int32_t mSeq;
70    int64_t mTimeUs;
71    sp<AMessage> mMeta;
72
73    HLSTime(const sp<AMessage> &meta = NULL);
74    int64_t getSegmentTimeUs() const;
75};
76
77bool operator <(const HLSTime &t0, const HLSTime &t1);
78
79// read and write various object to/from AMessage
80
81void writeToAMessage(sp<AMessage> msg, const AudioPlaybackRate &rate);
82void readFromAMessage(const sp<AMessage> &msg, AudioPlaybackRate *rate /* nonnull */);
83
84void writeToAMessage(sp<AMessage> msg, const AVSyncSettings &sync, float videoFpsHint);
85void readFromAMessage(
86        const sp<AMessage> &msg, AVSyncSettings *sync /* nonnull */, float *videoFps /* nonnull */);
87
88}  // namespace android
89
90#endif  // UTILS_H_
91