Utils.h revision ad3af3305f024bcbbd55c894a4995e449498e1ba 
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
44struct 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// Send information from MetaData to the HAL via AudioSink
57status_t sendMetaDataToHal(sp<MediaPlayerBase::AudioSink>& sink, const sp<MetaData>& meta);
58
59// Check whether the stream defined by meta can be offloaded to hardware
60bool canOffloadStream(const sp<MetaData>& meta, bool hasVideo, bool isStreaming);
61
62}  // namespace android
63
64#endif  // UTILS_H_
65