[Speex-dev] speex_encode_int performance iphone4 + iOS5

Luke Walker luke_walker at junglecat.org
Thu Jan 19 16:16:43 PST 2012

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Hi,I'm having performance issues encoding with speex on iphone4 + iOS5. The same code yields excellent results on iPad2 + iOS5, Mac OS X 10.6 as well as Windows 7. The call to speex_encode_int is takes ~0.0065 to complete. Because encoding is so latent the receiver incurs underruns.
Here is my speex setup:
unsigned val = 0;encoder_state_ = speex_encoder_init(speex_lib_get_mode(SPEEX_MODEID_NB));val = 7;speex_encoder_ctl(encoder_state_, SPEEX_SET_QUALITY, &val); val = 0;speex_encoder_ctl(encoder_state_, SPEEX_SET_COMPLEXITY, &val);val = 8000;speex_encoder_ctl(encoder_state_, SPEEX_SET_BITRATE, &val);val = 0;speex_encoder_ctl(encoder_state_, SPEEX_SET_VAD, &val);val = 0;speex_encoder_ctl(encoder_state_, SPEEX_SET_DTX, &val);val = 0;speex_encoder_ctl(encoder_state_, SPEEX_SET_VBR, &val);
Here is the time elapsed on iphone4:Encoding took 0.006500 seconds.Encoding took 0.004000 seconds.
And on Mac OS X:Encoding took 0.000805 seconds.Encoding took 0.000792 seconds.
Thanks in advance!  		 	   		  
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