Perf top for cedarx/vlc video playback (http://linux-sunxi.org/VLC)

gistfile1.txt

AUDIO: 44100 Hz, 2 ch, s16le, 192.0 kbit/13.60% (ratio: 23999->176400)
Selected audio codec: [faad] afm: faad (FAAD AAC (MPEG-2/MPEG-4 Audio))

Apparently 44100 Hz -> 48000 Hz sample rate conversion can be
ridiculously slow and heavily taxing the CPU.

   PerfTop:    8051 irqs/sec  kernel:19.1%  exact:  0.0% [4000Hz cycles],  (all, 1 CPU)
--------------------------------------------------------------------------------------------------------------------------------

    65.32%  libsamplerate.so.0.1.7     [.] 0x000045a0                       
     9.24%  libm-2.15.so               [.] __lrintl                         
     1.88%  [kernel]                   [k] __do_softirq                     
     1.19%  libaudio_format_plugin.so  [.] Fl32toS16                        
     0.87%  libc-2.15.so               [.] memcpy                           
     0.79%  libavcodec.so.53.61.100    [.] decode_ics.constprop.4           
     0.70%  perf                       [.] dso__find_symbol                 
     0.62%  [kernel]                   [k] finish_task_switch.constprop.75  
     0.57%  perf                       [.] _sort__dso_cmp                   
     0.55%  libasound.so.2.0.0         [.] 0x00074250                       
     0.54%  libc-2.15.so               [.] strcmp                           
     0.53%  perf                       [.] add_hist_entry.isra.2            
     0.50%  perf                       [.] sort__dso_cmp                    
     0.46%  libpthread-2.15.so         [.] pthread_mutex_lock               
     0.45%  perf                       [.] perf_top__mmap_read              
     0.42%  perf                       [.] perf_evsel__parse_sample