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 29 namespace android { 30 31 #define FOURCC(c1, c2, c3, c4) \ 32 ((c1) << 24 | (c2) << 16 | (c3) << 8 | (c4)) 33 34 uint16_t U16_AT(const uint8_t *ptr); 35 uint32_t U32_AT(const uint8_t *ptr); 36 uint64_t U64_AT(const uint8_t *ptr); 37 38 uint16_t U16LE_AT(const uint8_t *ptr); 39 uint32_t U32LE_AT(const uint8_t *ptr); 40 uint64_t U64LE_AT(const uint8_t *ptr); 41 42 uint64_t ntoh64(uint64_t x); 43 uint64_t hton64(uint64_t x); 44 45 class MetaData; 46 struct AMessage; 47 status_t convertMetaDataToMessage( 48 const sp<MetaData> &meta, sp<AMessage> *format); 49 void convertMessageToMetaData( 50 const sp<AMessage> &format, sp<MetaData> &meta); 51 52 // Returns a pointer to the next NAL start code in buffer of size |length| starting at |data|, or 53 // a pointer to the end of the buffer if the start code is not found. 54 // TODO: combine this with avc_utils::getNextNALUnit 55 const uint8_t *findNextNalStartCode(const uint8_t *data, size_t length); 56 57 AString MakeUserAgent(); 58 59 // Convert a MIME type to a AudioSystem::audio_format 60 status_t mapMimeToAudioFormat(audio_format_t& format, const char* mime); 61 62 // Convert a aac profile to a AudioSystem::audio_format 63 void mapAACProfileToAudioFormat(audio_format_t& format, uint64_t eAacProfile); 64 65 // Send information from MetaData to the HAL via AudioSink 66 status_t sendMetaDataToHal(sp<MediaPlayerBase::AudioSink>& sink, const sp<MetaData>& meta); 67 68 // Check whether the stream defined by meta can be offloaded to hardware 69 bool canOffloadStream(const sp<MetaData>& meta, bool hasVideo, 70 bool isStreaming, audio_stream_type_t streamType); 71 72 AString uriDebugString(const AString &uri, bool incognito = false); 73 74 struct HLSTime { 75 int32_t mSeq; 76 int64_t mTimeUs; 77 sp<AMessage> mMeta; 78 79 explicit HLSTime(const sp<AMessage> &meta = NULL); 80 int64_t getSegmentTimeUs() const; 81 }; 82 83 bool operator <(const HLSTime &t0, const HLSTime &t1); 84 85 // read and write various object to/from AMessage 86 87 void writeToAMessage(const sp<AMessage> &msg, const AudioPlaybackRate &rate); 88 void readFromAMessage(const sp<AMessage> &msg, AudioPlaybackRate *rate /* nonnull */); 89 90 void writeToAMessage(const sp<AMessage> &msg, const AVSyncSettings &sync, float videoFpsHint); 91 void readFromAMessage( 92 const sp<AMessage> &msg, AVSyncSettings *sync /* nonnull */, float *videoFps /* nonnull */); 93 94 void writeToAMessage(const sp<AMessage> &msg, const BufferingSettings &buffering); 95 void readFromAMessage(const sp<AMessage> &msg, BufferingSettings *buffering /* nonnull */); 96 97 AString nameForFd(int fd); 98 99 } // namespace android 100 101 #endif // UTILS_H_ 102
