On Sun, Aug 31, 2008 at 3:05 AM, Magnus Holmgren <[EMAIL PROTECTED]> wrote:
> Joseph Garvin wrote: > > To shrink my plugin size I'm trying to convert my sound samples to be >> 22050hz instead of 44100. But when I do this the sound always plays too fast >> like a chipmunk. I'm calling pcm_set_frequency(22050) but no matter what >> number I give it (I tested crazy values like 100) I get the same result. It >> always tries to play at 44100hz. I'm trying on the Sansa e200 simulator. Is >> this a limitation of the simulator or maybe of the e200? If so it'd be nice >> to get some sort of console warning. >> > > pcm_set_frequency sets the frequency of the hardware, but it is usually > quite limited in what frequencies it supports. Try dsp_configure, using > DSP_SWITCH_FREQUENCY, to set the frequency. See the mpegplayer audio thread > for an example. I tried: struct dsp_config* dsp = (struct dsp_config *)rb->dsp_configure(NULL, DSP_MYDSP, CODEC_IDX_AUDIO); rb->dsp_configure(dsp, DSP_SWITCH_FREQUENCY, 22050); rb->pcm_set_frequency(22050); rb->pcm_apply_settings(); But this still had no effect, at least in the simulator. Do I need to use dsp_process somehow? It's unclear to me how it works. I'm still playing the sound with pcm_play_data.