Android(安卓)Audio Debug相关方法

Audio的FW和HAL层dump PCM数据(非offload的场景，对应offload，dump出来的还是原数据)

1.抓取Systrace  <1>怎么加参考：frameworks/av/services/audioflinger/Threads.cpp    #define ATRACE_TAG ATRACE_TAG_AUDIO     ATRACE_BEGIN("write");     //代码。。。     ATRACE_END();  <2>怎么使用Systrace参考：     https://maoao530.github.io/2017/02/06/systrace/2.混音之前dump PCM数据  frameworks/av/media/libmedia/AudioTrack.cpp   #include   nsecs_t AudioTrack::processAudioBuffer(){    {//add begin     int tmpFd =::open("/data/local/test/dumpAudioTrack.pcm", O_CREAT | O_WRONLY | O_APPEND , 0777);     if(tmpFd < 0){        ALOGE("Fail to open dumpTrack file");     }else{        ::write(tmpFd, audioBuffer.raw, audioBuffer.frameCount * 2/* ChannelCount*/ * 2); //第1个2：双声道 1:单声道        ::close(tmpFd);        }      }      //add end      releaseBuffer(&audioBuffer);  }3、混音之后dump PCM数据   frameworks/av/services/audioflinger/Tracks.cpp   #include    status_t AudioFlinger::PlaybackThread::Track::getNextBuffer(AudioBufferProvider::Buffer* buffer, int64_t pts __unused){    {//add begin       int tmpFd =::open("/data/local/test/dumpTracks.pcm", O_CREAT | O_WRONLY | O_APPEND , 0777);       if(tmpFd < 0){         ALOGE("Fail to open dumpTrack file");       }else{         ::write(tmpFd, audioBuffer.raw, audioBuffer.size);        }     }     //add end    return status;  }注意：以上只是抓的AudioTrack播放的，AudioRecord录音的也是在nsecs_t AudioRecord::processAudioBuffer()里抓pcm录音数据。 4、HAL层dump数据   hardware/xxx平台/audio/tinyalsa_hal/audio_hw.c   //dump PCM数据函数<1>static void dump_out_data(const void* buffer,size_t bytes, int *size) {  ALOGD("dump pcm file.");   static FILE* fd;   static int offset = 0;   if(fd == NULL) {        fd=fopen("/data/local/test/dumpaudio_hw.pcm","wb+");           if(fd == NULL) {           ALOGD("DEBUG open /data/debug.pcm error =%d ,errno = %d",fd,errno);           offset = 0;       }   }   fwrite(buffer,bytes,1,fd);    offset += bytes;    fflush(fd);    if(offset >= (500*1024*1024))/*大于500M停止写入*/ {        *size = 0;        fclose(fd);       offset = 0;        system("setprop media.audio.record 0");        ALOGD("TEST playback pcmfile end");    } }<2>添加位置static ssize_t out_write(struct audio_stream_out *stream, const void* buffer, size_t bytes){   //add begin   dump_out_data(buffer, bytes, &prop_pcm);   //add end   char value[PROPERTY_VALUE_MAX];   property_get("media.audio.debug",value, NULL);}<br>

如何获取当前GenericSource选中的媒体抽取器的类型(mp3,aac等)
dumpsys media.extractor

Recent extractors, most recent first:  MP3Extractor for mime NULL, source TinyCacheSource(CallbackDataSource(RemoteDataSource(FileSource(fd(/data/app/com.sunmi.audio-1/base.apk), 1186524, 9423124)))), pid 750: deleted    track {srte: (int32_t) 44100, mime: (char*) audio/mpeg, encp: (int32_t) 1236, encd: (int32_t) 576, dura: (int64_t) 235546122, brte: (int32_t) 320000, #chn: (int32_t) 2} : active  <unspecified> for mime NULL, source TinyCacheSource(CallbackDataSource(RemoteDataSource(FileSource(fd(/system/media/audio/ui/KeypressInvalid.ogg), 0, 9847)))), pid 1556: active    track {vinf: (unknown type 0, size 30), vdat: (unknown type 0, size 114), vboo: (unknown type 0, size 4038), srte: (int32_t) 44100, mxBr: (int32_t) 0, mime: (char*) audio/vorbis, lang: (char*) , inpS: (int32_t) 65307, ffmt: (char*) application/ogg, dura: (int64_t) 182000, brte: (int32_t) 239920, #chn: (int32_t) 1} : active  <unspecified> for mime NULL, source TinyCacheSource(CallbackDataSource(RemoteDataSource(FileSource(fd(/system/media/audio/ui/KeypressReturn.ogg), 0, 6246)))), pid 1556: deleted    track {vinf: (unknown type 0, size 30), vdat: (unknown type 0, size 45), vboo: (unknown type 0, size 3920), srte: (int32_t) 48000, mxBr: (int32_t) -1, mime: (char*) audio/vorbis, lang: (char*) , inpS: (int32_t) 65307, ffmt: (char*) application/ogg, dura: (int64_t) 108000, brte: (int32_t) 140000, #chn: (int32_t) 1} : deleted  <unspecified> for mime NULL, source TinyCacheSource(CallbackDataSource(RemoteDataSource(FileSource(fd(/system/media/audio/ui/KeypressDelete.ogg), 0, 5832)))), pid 1556: deleted    track {vinf: (unknown type 0, size 30), vdat: (unknown type 0, size 45), vboo: (unknown type 0, size 3920), srte: (int32_t) 48000, mxBr: (int32_t) -1, mime: (char*) audio/vorbis, lang: (char*) , inpS: (int32_t) 65307, ffmt: (char*) application/ogg, dura: (int64_t) 108000, brte: (int32_t) 140000, #chn: (int32_t) 1} : deleted  <unspecified> for mime NULL, source TinyCacheSource(CallbackDataSource(RemoteDataSource(FileSource(fd(/system/media/audio/ui/Trusted.ogg), 0, 5713)))), pid 1881: active    track {vinf: (unknown type 0, size 30), vdat: (unknown type 0, size 45), vboo: (unknown type 0, size 4225), srte: (int32_t) 48000, mxBr: (int32_t) 0, mime: (char*) audio/vorbis, lang: (char*) , inpS: (int32_t) 65307, ffmt: (char*) application/ogg, dura: (int64_t) 80000, brte: (int32_t) 160000, #chn: (int32_t) 2} : active  <unspecified> for mime NULL, source TinyCacheSource(CallbackDataSource(RemoteDataSource(FileSource(fd(/system/media/audio/ui/KeypressSpacebar.ogg), 0, 5952)))), pid 1556: deleted    track {vinf: (unknown type 0, size 30), vdat: (unknown type 0, size 45), vboo: (unknown type 0, size 3920), srte: (int32_t) 48000, mxBr: (int32_t) -1, mime: (char*) audio/vorbis, lang: (char*) , inpS: (int32_t) 65307, ffmt: (char*) application/ogg, dura: (int64_t) 108000, brte: (int32_t) 140000, #chn: (int32_t) 1} : deleted  <unspecified> for mime NULL, source TinyCacheSource(CallbackDataSource(RemoteDataSource(FileSource(fd(/system/media/audio/ui/Unlock.ogg), 0, 7853)))), pid 1881: deleted    track {vinf: (unknown type 0, size 30), vdat: (unknown type 0, size 45), vboo: (unknown type 0, size 4225), srte: (int32_t) 44100, mxBr: (int32_t) -1, mime: (char*) audio/vorbis, lang: (char*) , inpS: (int32_t) 65307, ffmt: (char*) application/ogg, dura: (int64_t) 188000, brte: (int32_t) 160000, #chn: (int32_t) 2} : deleted  <unspecified> for mime NULL, source TinyCacheSource(CallbackDataSource(RemoteDataSource(FileSource(fd(/system/media/audio/ui/KeypressStandard.ogg), 0, 5837)))), pid 1556: deleted    track {vinf: (unknown type 0, size 30), vdat: (unknown type 0, size 45), vboo: (unknown type 0, size 3920), srte: (int32_t) 48000, mxBr: (int32_t) -1, mime: (char*) audio/vorbis, lang: (char*) , inpS: (int32_t) 65307, ffmt: (char*) application/ogg, dura: (int64_t) 108000, brte: (int32_t) 140000, #chn: (int32_t) 1} : deleted  <unspecified> for mime NULL, source TinyCacheSource(CallbackDataSource(RemoteDataSource(FileSource(fd(/system/media/audio/ui/Lock.ogg), 0, 8308)))), pid 1881: deleted    track {vinf: (unknown type 0, size 30), vdat: (unknown type 0, size 45), vboo: (unknown type 0, size 4225), srte: (int32_t) 44100, mxBr: (int32_t) -1, mime: (char*) audio/vorbis, lang: (char*) , inpS: (int32_t) 65307, ffmt: (char*) application/ogg, dura: (int64_t) 226000, brte: (int32_t) 160000, #chn: (int32_t) 2} : deleted  <unspecified> for mime NULL, source TinyCacheSource(CallbackDataSource(RemoteDataSource(FileSource(fd(/system/media/audio/ui/Effect_Tick.ogg), 0, 5136)))), pid 1556: deleted    track {vinf: (unknown type 0, size 30), vdat: (unknown type 0, size 45), vboo: (unknown type 0, size 3796), srte: (int32_t) 48000, mxBr: (int32_t) 0, mime: (char*) audio/vorbis, lang: (char*) , inpS: (int32_t) 65307, ffmt: (char*) application/ogg, dura: (int64_t) 94000, brte: (int32_t) 96000, #chn: (int32_t) 2} : deleted

察看当前Audio 支待哪些设备
adb shell dumpsys media.audio_policy > /home/jon/audio_policy.txt

- Available output devices:  Device 1:  - id:  1  - tag name: Earpiece  - type: AUDIO_DEVICE_OUT_EARPIECE                         - Profiles:      Profile 0:          - format: AUDIO_FORMAT_PCM_16_BIT          - sampling rates:48000          - channel masks:0x0010  Device 2:  - id:  2  - tag name: Speaker  - type: AUDIO_DEVICE_OUT_SPEAKER                          - Profiles:      Profile 0:          - format: AUDIO_FORMAT_PCM_16_BIT          - sampling rates:48000          - channel masks:0x0003  Device 3:  - id:  6  - tag name: Telephony Tx  - type: AUDIO_DEVICE_OUT_TELEPHONY_TX                     - Profiles:      Profile 0:          - format: AUDIO_FORMAT_PCM_16_BIT          - sampling rates:8000, 16000          - channel masks:0x0001, 0x0003

更多相关文章

随机推荐