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  • lavf/mpeg : Support alaw in Hikvision CCTV recordings.

    3 avril 2015, par Carl Eugen Hoyos
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  • Android ExoPlayer stream mp3 over HTTP

    8 juillet 2016, par kevintcoughlin

    I’m trying to get a grasp on the new ExoPlayer library introduced this year at Google I/O 2014 so that I can incorporate it into my application.

    I’m attempting to stream an mp3 over HTTP, but so far have been unsuccessful. I’m not sure if it’s possible, but I’m trying to accomplish this without extending any of the base Source/Sample classes. My code is as follows :

    In my Activity

    SampleSource s = new FrameworkSampleSource(this, Uri.parse("http://traffic.libsyn.com/joeroganexp/p518.mp3"), null, 1);
    

    
// Since I only have 1 audio renderer
    
ExoPlayer player = ExoPlayer.Factory.newInstance(1);
    

    
MediaCodecAudioTrackRenderer audioRenderer = new MediaCodecAudioTrackRenderer(s);
    
player.prepare(audioRenderer);
    
player.setPlayWhenReady(true);

    Logcat

    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ SniffFFMPEG
    
07-06 15:52:34.080    3363-3376/com.kevintcoughlin.smodr I/FFmpegExtractor﹕ android-source:0xb7c53e00
    
07-06 15:52:34.084    3363-3376/com.kevintcoughlin.smodr D/FFMPEG﹕ android source begin open
    
07-06 15:52:34.084    3363-3376/com.kevintcoughlin.smodr D/FFMPEG﹕ android open, url: android-source:0xb7c53e00
    
07-06 15:52:34.084    3363-3376/com.kevintcoughlin.smodr D/FFMPEG﹕ ffmpeg open android data source success, source ptr: 0xb7c53e00
    
07-06 15:52:34.088    3363-3376/com.kevintcoughlin.smodr D/FFMPEG﹕ android source open success
    
07-06 15:52:34.108    3363-3363/com.kevintcoughlin.smodr W/EGL_genymotion﹕ eglSurfaceAttrib not implemented
    
07-06 15:52:34.116    3363-3363/com.kevintcoughlin.smodr E/OpenGLRenderer﹕ Getting MAX_TEXTURE_SIZE from GradienCache
    
07-06 15:52:34.120    3363-3363/com.kevintcoughlin.smodr E/OpenGLRenderer﹕ MAX_TEXTURE_SIZE: 16384
    
07-06 15:52:34.128    3363-3363/com.kevintcoughlin.smodr E/OpenGLRenderer﹕ Getting MAX_TEXTURE_SIZE from Caches::initConstraints()
    
07-06 15:52:34.128    3363-3363/com.kevintcoughlin.smodr E/OpenGLRenderer﹕ MAX_TEXTURE_SIZE: 16384
    
07-06 15:52:34.128    3363-3363/com.kevintcoughlin.smodr D/OpenGLRenderer﹕ Enabling debug mode 0
    
07-06 15:52:34.640    3363-3376/com.kevintcoughlin.smodr I/FFMPEG﹕ [mp3 @ 0xb7c57040] Estimating duration from bitrate, this may be inaccurate
    
07-06 15:52:34.640    3363-3376/com.kevintcoughlin.smodr I/FFMPEG﹕ Input #0, mp3, from 'android-source:0xb7c53e00':
    
07-06 15:52:34.640    3363-3376/com.kevintcoughlin.smodr I/FFMPEG﹕ Metadata:
    
07-06 15:52:34.640    3363-3376/com.kevintcoughlin.smodr I/FFMPEG﹕ TSS             : Logic Pro 9.1.8
    
07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr I/FFMPEG﹕ title           : #518 - Matt Fulchiron
    
07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr I/FFMPEG﹕ artist          : Joe Rogan Experience
    
07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr I/FFMPEG﹕ album_artist    : Joe Rogan Experience
    
07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr I/FFMPEG﹕ Duration: 02:57:10.21, start: 0.000000, bitrate: 127 kb/s
    
07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr I/FFMPEG﹕ Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/s
    
07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr I/FFmpegExtractor﹕ FFmpegExtrator, url: android-source:0xb7c53e00, format_name: mp3, format_long_name: MP2/3 (MPEG audio layer 2/3)
    
07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr I/FFmpegExtractor﹕ list the formats suppoted by ffmpeg:
    
07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr I/FFmpegExtractor﹕ ========================================
    
07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[00]: mpeg
    
07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[01]: mpegts
    
07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[02]: mov,mp4,m4a,3gp,3g2,mj2
    
07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[03]: matroska,webm
    
07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[04]: asf
    
07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[05]: rm
    
07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[06]: flv
    
07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[07]: swf
    
07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[08]: avi
    
07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[09]: ape
    
07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[10]: dts
    
07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[11]: flac
    
07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[12]: ac3
    
07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[13]: wav
    
07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[14]: ogg
    
07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[15]: vc1
    
07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[16]: hevc
    
07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr I/FFmpegExtractor﹕ ========================================
    
07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr D/FFMPEG﹕ android source close
    
07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr W/FFmpegExtractor﹕ sniff through BetterSniffFFMPEG failed, try LegacySniffFFMPEG
    
07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr I/FFmpegExtractor﹕ source url:http://traffic.libsyn.com/joeroganexp/p518.mp3
    
07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr D/FFMPEG﹕ android source begin open
    
07-06 15:52:34.648    3363-3376/com.kevintcoughlin.smodr D/FFMPEG﹕ android open, url: android-source:0xb7c53e00|file:http://traffic.libsyn.com/joeroganexp/p518.mp3
    
07-06 15:52:34.648    3363-3376/com.kevintcoughlin.smodr D/FFMPEG﹕ ffmpeg open android data source success, source ptr: 0xb7c53e00
    
07-06 15:52:34.648    3363-3376/com.kevintcoughlin.smodr D/FFMPEG﹕ android source open success
    
07-06 15:52:34.708    3363-3394/com.kevintcoughlin.smodr D/dalvikvm﹕ GC_FOR_ALLOC freed 361K, 4% free 10852K/11288K, paused 75ms, total 75ms
    
07-06 15:52:34.844    3363-3376/com.kevintcoughlin.smodr I/FFMPEG﹕ [mp3 @ 0xb7ca7700] Estimating duration from bitrate, this may be inaccurate
    
07-06 15:52:34.844    3363-3376/com.kevintcoughlin.smodr I/FFMPEG﹕ Input #0, mp3, from 'android-source:0xb7c53e00|file:http://traffic.libsyn.com/joeroganexp/p518.mp3':
    
07-06 15:52:34.844    3363-3376/com.kevintcoughlin.smodr I/FFMPEG﹕ Metadata:
    
07-06 15:52:34.844    3363-3376/com.kevintcoughlin.smodr I/FFMPEG﹕ TSS             : Logic Pro 9.1.8
    
07-06 15:52:34.848    3363-3376/com.kevintcoughlin.smodr I/FFMPEG﹕ title           : #518 - Matt Fulchiron
    
07-06 15:52:34.848    3363-3376/com.kevintcoughlin.smodr I/FFMPEG﹕ artist          : Joe Rogan Experience
    
07-06 15:52:34.848    3363-3376/com.kevintcoughlin.smodr I/FFMPEG﹕ album_artist    : Joe Rogan Experience
    
07-06 15:52:34.848    3363-3376/com.kevintcoughlin.smodr I/FFMPEG﹕ Duration: 02:57:10.21, start: 0.000000, bitrate: 127 kb/s
    
07-06 15:52:34.848    3363-3376/com.kevintcoughlin.smodr I/FFMPEG﹕ Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/s
    
07-06 15:52:34.848    3363-3376/com.kevintcoughlin.smodr I/FFmpegExtractor﹕ FFmpegExtrator, url: android-source:0xb7c53e00|file:http://traffic.libsyn.com/joeroganexp/p518.mp3, format_name: mp3, format_long_name: MP2/3 (MPEG audio layer 2/3)
    
07-06 15:52:34.852    3363-3376/com.kevintcoughlin.smodr I/FFmpegExtractor﹕ list the formats suppoted by ffmpeg:
    
07-06 15:52:34.852    3363-3376/com.kevintcoughlin.smodr I/FFmpegExtractor﹕ ========================================
    
07-06 15:52:34.852    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[00]: mpeg
    
07-06 15:52:34.852    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[01]: mpegts
    
07-06 15:52:34.852    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[02]: mov,mp4,m4a,3gp,3g2,mj2
    
07-06 15:52:34.852    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[03]: matroska,webm
    
07-06 15:52:34.852    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[04]: asf
    
07-06 15:52:34.852    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[05]: rm
    
07-06 15:52:34.852    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[06]: flv
    
07-06 15:52:34.852    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[07]: swf
    
07-06 15:52:34.852    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[08]: avi
    
07-06 15:52:34.852    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[09]: ape
    
07-06 15:52:34.852    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[10]: dts
    
07-06 15:52:34.856    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[11]: flac
    
07-06 15:52:34.856    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[12]: ac3
    
07-06 15:52:34.856    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[13]: wav
    
07-06 15:52:34.856    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[14]: ogg
    
07-06 15:52:34.856    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[15]: vc1
    
07-06 15:52:34.856    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[16]: hevc
    
07-06 15:52:34.856    3363-3376/com.kevintcoughlin.smodr I/FFmpegExtractor﹕ ========================================
    
07-06 15:52:34.856    3363-3376/com.kevintcoughlin.smodr D/FFMPEG﹕ android source close
    
07-06 15:52:34.856    3363-3376/com.kevintcoughlin.smodr D/FFmpegExtractor﹕ SniffFFMPEG failed to sniff this source
    
07-06 15:52:34.856    3363-3397/com.kevintcoughlin.smodr D/dalvikvm﹕ GC_FOR_ALLOC freed 120K, 3% free 12342K/12696K, paused 29ms, total 60ms
    
07-06 15:52:34.860    3363-3397/com.kevintcoughlin.smodr I/dalvikvm-heap﹕ Grow heap (frag case) to 13.981MB for 1960012-byte allocation
    
07-06 15:52:34.872    3363-3387/com.kevintcoughlin.smodr D/dalvikvm﹕ GC_FOR_ALLOC freed <1K, 3% free 14256K/14612K, paused 10ms, total 10ms
    
07-06 15:52:34.880    3363-3376/com.kevintcoughlin.smodr I/OMXClient﹕ Using client-side OMX mux.
    
07-06 15:52:34.976    3363-3400/com.kevintcoughlin.smodr I/OMXClient﹕ Using client-side OMX mux.
    
07-06 15:52:35.144    3363-3393/com.kevintcoughlin.smodr D/dalvikvm﹕ GC_FOR_ALLOC freed 1512K, 12% free 13705K/15532K, paused 12ms, total 36ms
    
07-06 15:52:35.152    3363-3393/com.kevintcoughlin.smodr I/dalvikvm-heap﹕ Grow heap (frag case) to 15.315MB for 1962812-byte allocation
    
07-06 15:52:35.200    3363-3388/com.kevintcoughlin.smodr D/dalvikvm﹕ GC_FOR_ALLOC freed <1K, 11% free 15621K/17452K, paused 39ms, total 39ms
    
07-06 15:52:35.356    3363-3400/com.kevintcoughlin.smodr E/ACodec﹕ OMX/mediaserver died, signalling error!
    
07-06 15:52:35.356    3363-3400/com.kevintcoughlin.smodr E/MediaCodec﹕ Codec reported an error. (omx error 0x8000100d, internalError -32)
    
07-06 15:52:35.376    3363-3400/com.kevintcoughlin.smodr A/ACodec﹕ frameworks/av/media/libstagefright/ACodec.cpp:499 CHECK(mem.get() != NULL) failed.
    
07-06 15:52:35.376    3363-3400/com.kevintcoughlin.smodr A/libc﹕ Fatal signal 4 (SIGILL) at 0xb76d563d (code=2), thread 3400 (MediaCodec_loop)

    To my untrained eye it seems like I can get the TrackInfo correctly, but am having a problem reading the data over HTTP. It also seems that how the framework sniffs the mimetype is failing even though I do receive type ’audio/mpeg’.

    Again, I appreciate any direction I receive. I realize that these APIs are very new.

    Thanks !

  • Segmentation fault in samplerate conversion function

    17 juin 2014, par user3749290

    playmp3() using libmpg123

    if (isPaused==0 && mpg123_read(mh, buffer, buffer_size, &done) == MPG123_OK)
    
{
    
    char * resBuffer=&buffer[0]; //22100=0,5s
    
    buffer = resample(resBuffer,22100,22100);
    
    if((ao_play(dev, (char*)buffer, done)==0)){
    
        return 1;
    
}

    resample() Using avcodec from ffmpeg

    #define LENGTH_MS 500       // how many milliseconds of speech to store
    
#define RATE 44100      // the sampling rate (input)
    
#define FORMAT PA_SAMPLE_S16NE  // sample size: 8 or 16 bits
    
#define CHANNELS 2      // 1 = mono 2 = stereo
    

    
struct AVResampleContext* audio_cntx = 0;
    

    
char * resample(char in_buffer[(LENGTH_MS*RATE*16*CHANNELS)/8000],int out_rate,int nsamples)
    
{
    
    char out_buffer[ sizeof( in_buffer ) * 4];
    
    audio_cntx = av_resample_init( out_rate, //out rate
    
        RATE, //in rate
    
        16, //filter length
    
        10, //phase count
    
        0, //linear FIR filter
    
        1.0 ); //cutoff frequency
    
    assert( audio_cntx && "Failed to create resampling context!");
    
    int samples_consumed;
    
    int samples_output = av_resample( audio_cntx, //resample context
    
        (short*)out_buffer, //buffout
    
        (short*)in_buffer,  //buffin
    
        &samples_consumed,  //&consumed
    
        nsamples,       //nb_samples
    
        sizeof(out_buffer)/2,//lenout
    
        0);//is_last
    
    assert( samples_output > 0 && "Error calling av_resample()!" );
    
    av_resample_close( audio_cntx );
    
    //*resample = malloc(sizeof(out_buffer));
    
    return &out_buffer[0];  
    
}

    When i run this code i get 3393 Segmentation fault (core dump created). Why ?

    For example, the use of pointers is correct ?
    and 22100 are the samples that are contained in 0.5 seconds of the song ?

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