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 28 namespace android { 29 30 #define FOURCC(c1, c2, c3, c4) \ 31 (c1 << 24 | c2 << 16 | c3 << 8 | c4) 32 33 uint16_t U16_AT(const uint8_t *ptr); 34 uint32_t U32_AT(const uint8_t *ptr); 35 uint64_t U64_AT(const uint8_t *ptr); 36 37 uint16_t U16LE_AT(const uint8_t *ptr); 38 uint32_t U32LE_AT(const uint8_t *ptr); 39 uint64_t U64LE_AT(const uint8_t *ptr); 40 41 uint64_t ntoh64(uint64_t x); 42 uint64_t hton64(uint64_t x); 43 44 class MetaData; 45 struct AMessage; 46 status_t convertMetaDataToMessage( 47 const sp<MetaData> &meta, sp<AMessage> *format); 48 void convertMessageToMetaData( 49 const sp<AMessage> &format, sp<MetaData> &meta); 50 51 // Returns a pointer to the next NAL start code in buffer of size |length| starting at |data|, or 52 // a pointer to the end of the buffer if the start code is not found. 53 // TODO: combine this with avc_utils::getNextNALUnit 54 const uint8_t *findNextNalStartCode(const uint8_t *data, size_t length); 55 56 AString MakeUserAgent(); 57 58 // Convert a MIME type to a AudioSystem::audio_format 59 status_t mapMimeToAudioFormat(audio_format_t& format, const char* mime); 60 61 // Convert a aac profile to a AudioSystem::audio_format 62 void mapAACProfileToAudioFormat(audio_format_t& format, uint64_t eAacProfile); 63 64 // Send information from MetaData to the HAL via AudioSink 65 status_t sendMetaDataToHal(sp<MediaPlayerBase::AudioSink>& sink, const sp<MetaData>& meta); 66 67 // Check whether the stream defined by meta can be offloaded to hardware 68 bool canOffloadStream(const sp<MetaData>& meta, bool hasVideo, 69 bool isStreaming, audio_stream_type_t streamType); 70 71 AString uriDebugString(const AString &uri, bool incognito = false); 72 73 struct HLSTime { 74 int32_t mSeq; 75 int64_t mTimeUs; 76 sp<AMessage> mMeta; 77 78 HLSTime(const sp<AMessage> &meta = NULL); 79 int64_t getSegmentTimeUs() const; 80 }; 81 82 bool operator <(const HLSTime &t0, const HLSTime &t1); 83 84 // read and write various object to/from AMessage 85 86 void writeToAMessage(sp<AMessage> msg, const AudioPlaybackRate &rate); 87 void readFromAMessage(const sp<AMessage> &msg, AudioPlaybackRate *rate /* nonnull */); 88 89 void writeToAMessage(sp<AMessage> msg, const AVSyncSettings &sync, float videoFpsHint); 90 void readFromAMessage( 91 const sp<AMessage> &msg, AVSyncSettings *sync /* nonnull */, float *videoFps /* nonnull */); 92 93 AString nameForFd(int fd); 94 95 } // namespace android 96 97 #endif // UTILS_H_ 98