hi, i am using alsa0.9.4
i have written an application which works fine .but there is buffer underun problem .but it corrects itself after some time. i ant to overcome this problem.
please help.
i am here by attaching the program for verification.
i am setting : #define PERIODSIZE 512 #define BUFSIZE 512 * 4 int format = SND_PCM_FORMAT_S16_LE snd_pcm_uframes_t buffer_size = PERIODSIZE * 4 snd_pcm_uframes_t period_size = PERIODSIZE /* user buffer*/ char buf[BUFSIZE * 10];
Can anybody please explain as i am setting period_size = 512 , bufsize = 512*4, am i reading(readi) 2048 bytes? or 2048 frames?
whts the diffrence between frames and bytes?
while writing (writei) do i need to convert betwenn bytes and frames
please explain whats this period_size and buffer_size. And alsa is it necessory to keep application buffer to collect the sound as buf[BUFSIZE *10]?
if i want to read only 256 bytes with out any underrun or overrun to what values i must set buffer_size and period_size ? and also what should be the minimum size of application buf.?
And also if i am integrating this with RTP, i am getting broken pipe error while reading . But with out RTp it works fine. Whats the reason?
thanks, regards
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