<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - "Transistor" game makes every client playing at double speed" href="https://bugs.freedesktop.org/show_bug.cgi?id=87713#c5">Comment # 5</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - "Transistor" game makes every client playing at double speed" href="https://bugs.freedesktop.org/show_bug.cgi?id=87713">bug 87713</a> from <a class="email" href="mailto:superquad.vortex2@gmail.com" title="Raymond <superquad.vortex2@gmail.com>"> Raymond</a> <pre>static snd_pcm_uframes_t snd_ca0106_pcm_pointer_playback(struct snd_pcm_substream *substream) { struct snd_ca0106 *emu = snd_pcm_substream_chip(substream); struct snd_pcm_runtime *runtime = substream->runtime; struct snd_ca0106_pcm *epcm = runtime->private_data; unsigned int ptr, prev_ptr; int channel = epcm->channel_id; int timeout = 10; if (!epcm->running) return 0; prev_ptr = -1; do { ptr = snd_ca0106_ptr_read(emu, PLAYBACK_LIST_PTR, channel); ptr = (ptr >> 3) * runtime->period_size; ptr += bytes_to_frames(runtime, snd_ca0106_ptr_read(emu, PLAYBACK_POINTER, channel)); if (ptr >= runtime->buffer_size) ptr -= runtime->buffer_size; if (prev_ptr == ptr) return ptr; prev_ptr = ptr; } while (--timeout); dev_warn(emu->card->dev, "ca0106: unstable DMA pointer!\n"); return 0; } pointer callback return value from hardware register, do the sound card report realtime accurate update poistion ? <a href="http://cgit.freedesktop.org/pulseaudio/pulseaudio/plain/src/tests/alsa-time-test.c">http://cgit.freedesktop.org/pulseaudio/pulseaudio/plain/src/tests/alsa-time-test.c</a> try different fill rate do the sound card report hw_ptr better than period size ?</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>