static int oss_init_out (HWVoiceOut *hw, audsettings_t *as) { OSSVoiceOut *oss = (OSSVoiceOut *) hw; struct oss_params req, obt; int endianness; int err; int fd; audfmt_e effective_fmt; audsettings_t obt_as; oss->fd = -1; req.fmt = aud_to_ossfmt (as->fmt); req.freq = as->freq; req.nchannels = as->nchannels; req.fragsize = conf.fragsize; req.nfrags = conf.nfrags; if (oss_open (0, &req, &obt, &fd)) { return -1; } err = oss_to_audfmt (obt.fmt, &effective_fmt, &endianness); if (err) { oss_anal_close (&fd); return -1; } obt_as.freq = obt.freq; obt_as.nchannels = obt.nchannels; obt_as.fmt = effective_fmt; obt_as.endianness = endianness; audio_pcm_init_info (&hw->info, &obt_as); oss->nfrags = obt.nfrags; oss->fragsize = obt.fragsize; if (obt.nfrags * obt.fragsize & hw->info.align) { dolog ("warning: Misaligned DAC buffer, size %d, alignment %d\n", obt.nfrags * obt.fragsize, hw->info.align + 1); } hw->samples = (obt.nfrags * obt.fragsize) >> hw->info.shift; oss->mmapped = 0; if (conf.try_mmap) { oss->pcm_buf = mmap ( 0, hw->samples << hw->info.shift, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0 ); if (oss->pcm_buf == MAP_FAILED) { oss_logerr (errno, "Failed to map %d bytes of DAC\n", hw->samples << hw->info.shift); } else { int err; int trig = 0; if (ioctl (fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) { oss_logerr (errno, "SNDCTL_DSP_SETTRIGGER 0 failed\n"); } else { trig = PCM_ENABLE_OUTPUT; if (ioctl (fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) { oss_logerr ( errno, "SNDCTL_DSP_SETTRIGGER PCM_ENABLE_OUTPUT failed\n" ); } else { oss->mmapped = 1; } } if (!oss->mmapped) { err = munmap (oss->pcm_buf, hw->samples << hw->info.shift); if (err) { oss_logerr (errno, "Failed to unmap buffer %p size %d\n", oss->pcm_buf, hw->samples << hw->info.shift); } } } } if (!oss->mmapped) { oss->pcm_buf = audio_calloc ( AUDIO_FUNC, hw->samples, 1 << hw->info.shift ); if (!oss->pcm_buf) { dolog ( "Could not allocate DAC buffer (%d samples, each %d bytes)\n", hw->samples, 1 << hw->info.shift ); oss_anal_close (&fd); return -1; } } oss->fd = fd; return 0; }
static int oss_init_out (HWVoiceOut *hw, audsettings_t *as) { OSSVoiceOut *oss = (OSSVoiceOut *) hw; struct oss_params req, obt; int endianness; int err; int fd; audfmt_e effective_fmt; audsettings_t obt_as; oss->fd = -1; req.fmt = aud_to_ossfmt (as->fmt); req.freq = as->freq; req.nchannels = as->nchannels; req.fragsize = conf.fragsize; req.nfrags = conf.nfrags; if (oss_open (0, &req, &obt, &fd)) { return -1; } err = oss_to_audfmt (obt.fmt, &effective_fmt, &endianness); if (err) { oss_anal_close (&fd); return -1; } obt_as.freq = obt.freq; obt_as.nchannels = obt.nchannels; obt_as.fmt = effective_fmt; obt_as.endianness = endianness; audio_pcm_init_info (&hw->info, &obt_as); oss->nfrags = obt.nfrags; oss->fragsize = obt.fragsize; if (obt.nfrags * obt.fragsize & hw->info.align) { dolog ("warning: Misaligned DAC buffer, size %d, alignment %d\n", obt.nfrags * obt.fragsize, hw->info.align + 1); } hw->samples = (obt.nfrags * obt.fragsize) >> hw->info.shift; oss->mmapped = 0; if (conf.try_mmap) { oss->pcm_buf = mmap ( 0, hw->samples << hw->info.shift, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0 ); if (oss->pcm_buf == MAP_FAILED) { oss_logerr (errno, "Failed to map %d bytes of DAC\n", hw->samples << hw->info.shift); } else { int err; int trig = 0; if (ioctl (fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) { oss_logerr (errno, "SNDCTL_DSP_SETTRIGGER 0 failed\n"); } else { trig = PCM_ENABLE_OUTPUT; if (ioctl (fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) { oss_logerr ( errno, "SNDCTL_DSP_SETTRIGGER PCM_ENABLE_OUTPUT failed\n" ); } else { oss->mmapped = 1; } } if (!oss->mmapped) { err = munmap (oss->pcm_buf, hw->samples << hw->info.shift); if (err) { oss_logerr (errno, "Failed to unmap buffer %p size %d\n", oss->pcm_buf, hw->samples << hw->info.shift); } } } } if (!oss->mmapped) { oss->pcm_buf = audio_calloc ( AUDIO_FUNC, hw->samples, 1 << hw->info.shift ); if (!oss->pcm_buf) { dolog ( "Could not allocate DAC buffer (%d samples, each %d bytes)\n", hw->samples, 1 << hw->info.shift ); oss_anal_close (&fd); return -1; } } oss->fd = fd; return 0; }