>as i said above, nice work, and nice that someone does this. >i tried yesterday your mmap implemantation and at least get it to work >somehow, but im right that: > >outbuffer = (area->addr + (area->first + area->step * (offset)) / 8); > >returns only a pointer to the buffer? i have to do: > > memset(outbuffer, 0, frames_transmit); > memcpy(outbuffer, data, frames_transmit); > >to really wright data to the buffer. i get also some kind of fragments >staying in buffer if i guess one 'frames_transmit' is smaller than the >written before or/and if its not aligned to fragment_size, a funny >effect, but im currently don't know how to clean it up.
forget all this and use snd_pcm_mmap_copy_areas. forget all that and use ... well, you know ;) --p
