diff options
Diffstat (limited to 'desiredata/src')
| -rw-r--r-- | desiredata/src/s_audio_alsamm.c | 185 |
1 files changed, 62 insertions, 123 deletions
diff --git a/desiredata/src/s_audio_alsamm.c b/desiredata/src/s_audio_alsamm.c index a0a2d101..06205214 100644 --- a/desiredata/src/s_audio_alsamm.c +++ b/desiredata/src/s_audio_alsamm.c @@ -54,17 +54,10 @@ #define CLIP32(x) (((x)>F32MAX)?F32MAX:((x) < -F32MAX)?-F32MAX:(x)) #define ALSAMM_FORMAT SND_PCM_FORMAT_S32 -/* - maximum of 4 devices - you can mix rme9632,hdsp9632 (18 chans) rme9652,hdsp9652 (26 chans), dsp-madi (64 chans) - if synced -*/ +/* maximum of 4 devices. you can mix rme9632,hdsp9632 (18 chans) rme9652,hdsp9652 (26 chans), dsp-madi (64 chans) if synced */ -/* - we need same samplerate, buffertime and so on for - each card soo we use global vars... - time is in us, size in frames (i hope so ;-) -*/ +/* we need same samplerate, buffertime and so on for each card soo we use global vars... + time is in us, size in frames (i hope so ;-) */ static unsigned int alsamm_sr = 0; static unsigned int alsamm_buffertime = 0; static unsigned int alsamm_buffersize = 0; @@ -178,9 +171,8 @@ int alsamm_open_audio(int rate) { sys_schedadvance,sys_advance_samples,alsamm_buffertime, sys_blocksize,alsamm_buffersize); alsamm_periods = 0; /* no one wants periods setting from command line ;-) */ - for (i=0;i<alsa_noutdev;i++) { - /* post("open audio out %d, of %lx, %d",i,&alsa_device[i], - alsa_outdev[i].a_handle); */ + for (int i=0; i<alsa_noutdev;i++) { + /* post("open audio out %d, of %lx, %d",i,&alsa_device[i], alsa_outdev[i].a_handle); */ try { CHK(set_hwparams(alsa_outdev[i].a_handle, hw_params, &(alsa_outdev[i].a_channels))); CHK(set_swparams(alsa_outdev[i].a_handle, sw_params,1)); @@ -191,7 +183,7 @@ int alsamm_open_audio(int rate) { post("playback device with %d channels and buffer_time %d us opened", alsa_outdev[i].a_channels, alsamm_buffertime); } catch (AlsaError) {continue;} } - for (i=0;i<alsa_nindev;i++) { + for (int i=0; i<alsa_nindev; i++) { if(sys_verbose) post("capture card %d:--------------------",i); CHK(set_hwparams(alsa_indev[i].a_handle, hw_params, &(alsa_indev[i].a_channels))); alsamm_inchannels += alsa_indev[i].a_channels; @@ -230,7 +222,7 @@ int alsamm_open_audio(int rate) { void alsamm_close_audio() { if(debug&&sys_verbose) post("closing devices"); alsamm_stop(); - for (int i=0;i< alsa_noutdev;i++) { + for (int i=0; i<alsa_noutdev; i++) { //if(debug&&sys_verbose) post("unlink audio out %d, of %lx",i,used_outdevice[i]); if(alsa_outdev[i].a_synced != 0) { CHK(snd_pcm_unlink(alsa_outdev[i].a_handle)); @@ -240,7 +232,7 @@ void alsamm_close_audio() { if(alsa_outdev[i].a_addr) {free(alsa_outdev[i].a_addr); alsa_outdev[i].a_addr=0;} alsa_outdev[i].a_channels = 0; } - for (int i=0;i< alsa_nindev;i++) { + for (int i=0; i<alsa_nindev; i++) { CHK(snd_pcm_close(alsa_indev[i].a_handle)); if(alsa_indev[i].a_addr) {free(alsa_indev[i].a_addr); alsa_indev[i].a_addr=0;} alsa_indev[i].a_channels = 0; @@ -257,7 +249,6 @@ static int set_hwparams(snd_pcm_t *handle, snd_pcm_hw_params_t *params,int *chs) try { #ifndef ALSAAPI9 unsigned int rrate; - int dir; /* choose all parameters */ CHK(snd_pcm_hw_params_any(handle, params)); /* set the nointerleaved read/write format */ @@ -269,7 +260,7 @@ static int set_hwparams(snd_pcm_t *handle, snd_pcm_hw_params_t *params,int *chs) /* set the stream rate */ rrate = alsamm_sr; if(debug&&sys_verbose) post("Samplerate request: %i Hz",rrate); - dir=-1; + int dir=-1; CHK(snd_pcm_hw_params_set_rate_near(handle, params, &rrate, &dir)); if (rrate != alsamm_sr) { post("Warning: rate %iHz doesn't match requested %iHz", rrate,alsamm_sr); @@ -281,9 +272,9 @@ static int set_hwparams(snd_pcm_t *handle, snd_pcm_hw_params_t *params,int *chs) CHK(snd_pcm_hw_params_get_channels_max(params, (unsigned *)&maxchs)); CHK(snd_pcm_hw_params_get_channels_min(params, (unsigned *)&minchs)); if(debug&&sys_verbose) post("Getting channels:min=%d, max= %d for request=%d",minchs,maxchs,channels); - if(channels < 0)channels=maxchs; - if(channels > maxchs)channels = maxchs; - if(channels < minchs)channels = minchs; + if(channels<0) channels=maxchs; + if(channels>maxchs) channels = maxchs; + if(channels<minchs) channels = minchs; if(channels != *chs) post("requested channels=%d but used=%d",*chs,channels); *chs = channels; if(debug&&sys_verbose) post("trying to use channels: %d",channels); @@ -348,13 +339,13 @@ static int set_swparams(snd_pcm_t *handle, snd_pcm_sw_params_t *swparams, int pl snd_pcm_sw_params_get_stop_threshold(swparams, &bs); if(debug&&sys_verbose) post("sw_params: set stop_thresh_hold= %d (was %d)", (int) bs,(int)obs); /* AUTOSILENCE: silence if overrun.... */ - snd_pcm_sw_params_get_silence_threshold (swparams, &ops); - CHK(snd_pcm_sw_params_set_silence_threshold (handle, swparams, alsamm_period_size)); - snd_pcm_sw_params_get_silence_threshold (swparams, &ps); + snd_pcm_sw_params_get_silence_threshold(swparams, &ops); + CHK(snd_pcm_sw_params_set_silence_threshold(handle, swparams, alsamm_period_size)); + snd_pcm_sw_params_get_silence_threshold(swparams, &ps); if(debug&&sys_verbose) post("sw_params: set silence_threshold = %d (was %d)", (int) ps,(int)ops); - snd_pcm_sw_params_get_silence_size (swparams, &ops); + snd_pcm_sw_params_get_silence_size(swparams, &ops); CHK(snd_pcm_sw_params_set_silence_size(handle, swparams, alsamm_period_size)); - snd_pcm_sw_params_get_silence_size (swparams, &ps); + snd_pcm_sw_params_get_silence_size(swparams, &ps); if(debug&&sys_verbose) post("sw_params: set silence_size = %d (was %d)", (int) ps,(int)ops); /* AVAIL: allow the transfer when at least period_size samples can be processed */ snd_pcm_sw_params_get_avail_min(swparams, &ops); @@ -379,10 +370,7 @@ static int set_swparams(snd_pcm_t *handle, snd_pcm_sw_params_t *swparams, int pl /* ALSA Transfer helps */ /* xrun_recovery is called if time to late or error - Note: use outhandle if synced i/o - the devices are linked so prepare - has only be called on out, - hopefully resume too... + Note: use outhandle if synced i/o; the devices are linked so prepare has only be called on out, hopefully resume too... */ static int xrun_recovery(snd_pcm_t *handle, int err) { if (debug) alsamm_xruns++; /* count xruns */ @@ -405,12 +393,10 @@ static int xrun_recovery(snd_pcm_t *handle, int err) { static int alsamm_get_channels(snd_pcm_t *dev, snd_pcm_uframes_t *avail, snd_pcm_uframes_t *offset, int nchns, char **addr) { int err = 0; const snd_pcm_channel_area_t *mm_areas; - if (nchns > 0 && avail != NULL && offset != NULL) { - if ((err = snd_pcm_mmap_begin(dev, &mm_areas, offset, avail)) < 0) { - check_error(err,"setmems: begin_mmap failure ???"); - return err; - } - for (int chn = 0; chn < nchns; chn++) { + if (nchns>0 && avail && offset) { + err = snd_pcm_mmap_begin(dev, &mm_areas, offset, avail); + if (err<0) {check_error(err,"setmems: begin_mmap failure ???"); return err;} + for (int chn=0; chn<nchns; chn++) { const snd_pcm_channel_area_t *a = &mm_areas[chn]; addr[chn] = (char *) a->addr + ((a->first + a->step * *offset) / 8); } @@ -421,16 +407,13 @@ static int alsamm_get_channels(snd_pcm_t *dev, snd_pcm_uframes_t *avail, snd_pcm static void alsamm_start() { int err = 0; - int chn; /* first prepare for in/out */ for (int devno=0; devno<alsa_noutdev; devno++) { snd_pcm_uframes_t offset, avail; t_alsa_dev *dev = &alsa_outdev[devno]; /* snd_pcm_prepare also in xrun, but cannot harm here */ - if ((err = snd_pcm_prepare (dev->a_handle)) < 0) { - check_error(err,"outcard prepare error for playback"); - return; - } + err = snd_pcm_prepare(dev->a_handle); + if (err<0) {check_error(err,"outcard prepare error for playback"); return;} offset = 0; avail = snd_pcm_avail_update(dev->a_handle); if (avail != (snd_pcm_uframes_t) alsamm_buffer_size) { @@ -440,12 +423,9 @@ static void alsamm_start() { if(debug&&sys_verbose) post("start: set mems for avail=%d,offset=%d at buffersize=%d",avail,offset,alsamm_buffer_size); if(avail > 0) { int comitted = 0; - if ((err = alsamm_get_channels(dev->a_handle, &avail, &offset, dev->a_channels,dev->a_addr)) < 0) { - check_error(err,"setting initial out channelspointer failure ?"); - continue; - } - for (chn = 0; chn < dev->a_channels; chn++) - memset(dev->a_addr[chn],0,avail*ALSAMM_SAMPLEWIDTH_32); + err = alsamm_get_channels(dev->a_handle, &avail, &offset, dev->a_channels,dev->a_addr); + if (err<0) {check_error(err,"setting initial out channelspointer failure ?"); continue;} + for (int chn=0; chn<dev->a_channels; chn++) memset(dev->a_addr[chn],0,avail*ALSAMM_SAMPLEWIDTH_32); comitted = snd_pcm_mmap_commit (dev->a_handle, offset, avail); avail = snd_pcm_avail_update(dev->a_handle); if(debug&&sys_verbose) post("start: now channels cleared, out with avail=%d, offset=%d,comitted=%d",avail,offset,comitted); @@ -454,20 +434,16 @@ static void alsamm_start() { avail = snd_pcm_avail_update(dev->a_handle); if(debug&&sys_verbose) post("start: finish start, out with avail=%d, offset=%d",avail,offset); /* we have no autostart so anyway start*/ - if ((err = snd_pcm_start (dev->a_handle)) < 0) { - check_error(err,"could not start playback"); - } + err = snd_pcm_start (dev->a_handle); + if (err<0) check_error(err,"could not start playback"); } - for (int devno = 0;devno < alsa_nindev;devno++) { + for (int devno=0; devno<alsa_nindev; devno++) { snd_pcm_uframes_t ioffset, iavail; t_alsa_dev *dev = &alsa_indev[devno]; - /* if devices are synced then dont need to prepare - hopefully dma in aereas allready filled correct by the card */ - if(dev->a_synced == 0) { - if ((err = snd_pcm_prepare (dev->a_handle)) < 0) { - check_error(err,"incard prepare error for capture"); - /* return err;*/ - } + /* if devices are synced then don't need to prepare; hopefully dma in aereas allready filled correct by the card */ + if (dev->a_synced == 0) { + err = snd_pcm_prepare (dev->a_handle); + if (err<0) {check_error(err,"incard prepare error for capture"); /* return err;*/} } ioffset = 0; iavail = snd_pcm_avail_update (dev->a_handle); @@ -475,10 +451,8 @@ static void alsamm_start() { if (debug) post("start in: set in mems for avail=%d,offset=%d at buffersize=%d",iavail,ioffset,alsamm_buffer_size); if (iavail > (snd_pcm_uframes_t) 0) { if (debug) post("empty buffer not available at start, since avail %d != %d buffersize", iavail, alsamm_buffer_size); - if ((err = alsamm_get_channels(dev->a_handle, &iavail, &ioffset, dev->a_channels,dev->a_addr)) < 0) { - check_error(err,"getting in channelspointer failure ????"); - continue; - } + err = alsamm_get_channels(dev->a_handle, &iavail, &ioffset, dev->a_channels,dev->a_addr); + if (err<0) {check_error(err,"getting in channelspointer failure ????"); continue;} snd_pcm_mmap_commit (dev->a_handle, ioffset, iavail); iavail = snd_pcm_avail_update (dev->a_handle); if (debug) post("start in now avail=%d",iavail); @@ -487,22 +461,18 @@ static void alsamm_start() { /* if devices are synced then dont need to start */ /* start with autostart , but anyway start */ if(dev->a_synced == 0) { - if ((err = snd_pcm_start (dev->a_handle)) < 0) { - check_error(err,"could not start capture"); - continue; - } + err = snd_pcm_start (dev->a_handle); + if (err<0) {check_error(err,"could not start capture"); continue;} } } } static void alsamm_stop() { - /* first stop in... */ for (int devno=0; devno<alsa_nindev; devno++) { t_alsa_dev *dev = &alsa_indev[devno]; if(sys_verbose) post("stop in device %d",devno); CH(snd_pcm_drop(dev->a_handle)); } - /* then outs */ for (int devno=0; devno<alsa_noutdev;devno++) { t_alsa_dev *dev = &alsa_outdev[devno]; if(sys_verbose) post("stop out device %d",devno); @@ -520,7 +490,7 @@ static void alsamm_stop() { Problems to solve: - a) Since in ALSA MMAP, the MMAP reagion can change (dont ask me why) + a) Since in ALSA MMAP, the MMAP reagion can change (don't ask me why) we have to do it each cycle or we say on RME HAMMERFALL/HDSP/DSPMADI it never changes to it once. so maybe we can do it once in open @@ -544,10 +514,8 @@ int alsamm_send_dacs() { int outchannels = sys_outchannels; timelast = sys_getrealtime(); if (debug) { - if(dac_send++ < 0) - post("dac send called in %d, out %d, xrun %d",inchannels,outchannels, alsamm_xruns); - if(alsamm_xruns && (alsamm_xruns % 1000) == 0) - post("1000 xruns accoured"); + if(dac_send++ < 0) post("dac send called in %d, out %d, xrun %d",inchannels,outchannels, alsamm_xruns); + if(alsamm_xruns && (alsamm_xruns % 1000) == 0) post("1000 xruns accoured"); if(dac_send < WATCH_PERIODS) { out_cm[dac_send] = -1; in_avail[dac_send] = out_avail[dac_send] = -1; @@ -559,8 +527,7 @@ int alsamm_send_dacs() { if (!inchannels && !outchannels) return SENDDACS_NO; /* here we should check if in and out samples are here. but, the point is if out samples available also in sample should, - so we dont make a precheck of insamples here and let outsample check be the - the first of the first card. */ + so we don't make a precheck of insamples here and let outsample check be the first of the first card. */ /* OUTPUT Transfer */ fpo = sys_soundout; for(devno = 0;devno < alsa_noutdev;devno++) { @@ -574,10 +541,7 @@ int alsamm_send_dacs() { if (oavail < 0) { if (debug) broken_opipe++; err = xrun_recovery(out, -EPIPE); - if (err < 0) { - check_error(err,"otavail<0 recovery failed"); - return SENDDACS_NO; - } + if (err < 0) {check_error(err,"otavail<0 recovery failed"); return SENDDACS_NO;} oavail = snd_pcm_avail_update(out); } /* check if we are late and have to (able to) catch up */ @@ -585,22 +549,14 @@ int alsamm_send_dacs() { state = snd_pcm_state(out); if (state == SND_PCM_STATE_XRUN) { err = xrun_recovery(out, -EPIPE); - if (err < 0) { - check_error(err,"DAC XRUN recovery failed"); - return SENDDACS_NO; - } + if (err < 0) {check_error(err,"DAC XRUN recovery failed"); return SENDDACS_NO;} oavail = snd_pcm_avail_update(out); } else if (state == SND_PCM_STATE_SUSPENDED) { err = xrun_recovery(out, -ESTRPIPE); - if (err < 0) { - check_error(err,"DAC SUSPEND recovery failed"); - return SENDDACS_NO; - } + if (err < 0) {check_error(err,"DAC SUSPEND recovery failed"); return SENDDACS_NO;} oavail = snd_pcm_avail_update(out); } - if(debug && dac_send < WATCH_PERIODS) { - out_avail[dac_send] = oavail; - } + if(debug && dac_send < WATCH_PERIODS) out_avail[dac_send] = oavail; /* we only transfer transfersize of bytes request, this should only happen on first card otherwise we got a problem :-(()*/ if(oavail < sys_dacblocksize) return SENDDACS_NO; @@ -612,7 +568,6 @@ int alsamm_send_dacs() { transfer (normally when buffersize is a multiple of transfersize this should never happen) */ while (size > 0) { - int chn; snd_pcm_sframes_t oframes; oframes = size; err = alsamm_get_channels(out, (unsigned long *)&oframes, (unsigned long *)&ooffset,ochannels,dev->a_addr); @@ -620,14 +575,12 @@ int alsamm_send_dacs() { out_offset[dac_send] = ooffset; outaddr[dac_send] = (char *) dev->a_addr[0]; } - if (err < 0) { - if ((err = xrun_recovery(out, err)) < 0) { - check_error(err,"MMAP begins avail error"); - break; /* next card please */ - } + if (err<0) { + err = xrun_recovery(out, err); + if (err<0) {check_error(err,"MMAP begins avail error"); break; /* next card please */} } /* transfer into memory */ - for (chn = 0; chn < ochannels; chn++) { + for (int chn=0; chn<ochannels; chn++) { t_alsa_sample32 *buf = (t_alsa_sample32 *)dev->a_addr[chn]; /* osc(buf, oframes, (dac_send%1000 < 500)?-100.0:-10.0,440,&(indexes[chn])); */ for (i = 0, fp2 = fp1 + chn*sys_dacblocksize; i < oframes; i++,fp2++) { @@ -667,17 +620,11 @@ int alsamm_send_dacs() { state = snd_pcm_state(in); if (state == SND_PCM_STATE_XRUN) { err = xrun_recovery(in, -EPIPE); - if (err < 0) { - check_error(err,"ADC XRUN recovery failed"); - return SENDDACS_NO; - } + if (err<0) {check_error(err,"ADC XRUN recovery failed"); return SENDDACS_NO;} iavail=snd_pcm_avail_update(in); } else if (state == SND_PCM_STATE_SUSPENDED) { err = xrun_recovery(in, -ESTRPIPE); - if (err < 0) { - check_error(err,"ADC SUSPEND recovery failed"); - return SENDDACS_NO; - } + if (err < 0) {check_error(err,"ADC SUSPEND recovery failed"); return SENDDACS_NO;} iavail=snd_pcm_avail_update(in); } /* only transfer full transfersize or nothing */ @@ -689,14 +636,11 @@ int alsamm_send_dacs() { transfer (normally when buffersize is a multiple of transfersize this should never happen) */ while(size > 0) { - int chn; snd_pcm_sframes_t iframes = size; - err = alsamm_get_channels(in, (unsigned long *)&iframes, (unsigned long *)&ioffset,ichannels,dev->a_addr); - if (err < 0) { - if ((err = xrun_recovery(in, err)) < 0) { - check_error(err,"MMAP begins avail error"); - return SENDDACS_NO; - } + err = alsamm_get_channels(in, (unsigned long *)&iframes, (unsigned long *)&ioffset,ichannels,dev->a_addr); + if (err<0) { + err = xrun_recovery(in, err); + if (err<0) {check_error(err,"MMAP begins avail error"); return SENDDACS_NO;} } if(debug && dac_send < WATCH_PERIODS) { in_avail[dac_send] = iavail; @@ -704,21 +648,18 @@ int alsamm_send_dacs() { inaddr[dac_send] = dev->a_addr[0]; } /* transfer into memory */ - for (chn = 0; chn < ichannels; chn++) { + for (int chn=0; chn<ichannels; chn++) { t_alsa_sample32 *buf = (t_alsa_sample32 *) dev->a_addr[chn]; for (i = 0, fp2 = fp1 + chn*sys_dacblocksize; i < iframes; i++,fp2++) { /* mask the lowest bits, since subchannels info can make zero samples nonzero */ - *fp2 = (float) ((t_alsa_sample32) (buf[i] & 0xFFFFFF00)) - * (1.0 / (float) INT32_MAX); + *fp2 = (float) (t_alsa_sample32(buf[i] & 0xFFFFFF00)) * (1.0 / float(INT32_MAX)); } } commitres = snd_pcm_mmap_commit(in, ioffset, iframes); if (commitres < 0 || commitres != iframes) { post("please never"); - if ((err = xrun_recovery(in, commitres >= 0 ? -EPIPE : commitres)) < 0) { - check_error(err,"MMAP synced in commit error"); - return SENDDACS_NO; - } + err = xrun_recovery(in, commitres >= 0 ? -EPIPE : commitres); + if (err<0) {check_error(err,"MMAP synced in commit error"); return SENDDACS_NO;} } fp1 += iframes; size -= iframes; @@ -738,9 +679,7 @@ void alsamm_showstat(snd_pcm_t *handle) { int err; snd_pcm_status_t *status; snd_pcm_status_alloca(&status); - if ((err = snd_pcm_status(handle, status)) < 0) { - check_error(err, "Get Stream status error"); - return; - } + err = snd_pcm_status(handle, status); + if (err<0) {check_error(err,"Get Stream status error"); return;} snd_pcm_status_dump(status, alsa_stdout); } |