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-rw-r--r--apps/plugins/pdbox/PDa/src/s_audio_alsa.c946
1 files changed, 0 insertions, 946 deletions
diff --git a/apps/plugins/pdbox/PDa/src/s_audio_alsa.c b/apps/plugins/pdbox/PDa/src/s_audio_alsa.c
deleted file mode 100644
index b8e8535dc9..0000000000
--- a/apps/plugins/pdbox/PDa/src/s_audio_alsa.c
+++ /dev/null
@@ -1,946 +0,0 @@
-/* Copyright (c) 1997-2003 Guenter Geiger, Miller Puckette, Larry Troxler,
-* Winfried Ritsch, Karl MacMillan, and others.
-* For information on usage and redistribution, and for a DISCLAIMER OF ALL
-* WARRANTIES, see the file, "LICENSE.txt," in this distribution. */
-
-/* this file inputs and outputs audio using the ALSA API available on linux. */
-
-#include <alsa/asoundlib.h>
-
-#include "m_pd.h"
-#include "s_stuff.h"
-#include <errno.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/types.h>
-#include <sys/time.h>
-#include <sys/stat.h>
-#include <sys/ioctl.h>
-#include <fcntl.h>
-#include <sched.h>
-#include <sys/mman.h>
-
-typedef int16_t t_alsa_sample16;
-typedef int32_t t_alsa_sample32;
-#define ALSA_SAMPLEWIDTH_16 sizeof(t_alsa_sample16)
-#define ALSA_SAMPLEWIDTH_32 sizeof(t_alsa_sample32)
-#define ALSA_XFERSIZE16 (signed int)(sizeof(t_alsa_sample16) * DEFDACBLKSIZE)
-#define ALSA_XFERSIZE32 (signed int)(sizeof(t_alsa_sample32) * DEFDACBLKSIZE)
-#define ALSA_MAXDEV 1
-#define ALSA_JITTER 1024
-#define ALSA_EXTRABUFFER 2048
-#define ALSA_DEFFRAGSIZE 64
-#define ALSA_DEFNFRAG 12
-
-#ifndef INT32_MAX
-#define INT32_MAX 0x7fffffff
-#endif
-
-#if (SND_LIB_MAJOR < 1)
-#define ALSAAPI9
-#endif
-
-typedef struct _alsa_dev
-{
- snd_pcm_t *inhandle;
- snd_pcm_t *outhandle;
- int innoninterleave; /* true if we're set for noninterleaved read */
- int outnoninterleave; /* same for write */
-} t_alsa_dev;
-
-t_alsa_dev alsa_device;
-static void *alsa_snd_buf = 0;
-static void **alsa_buf_ptrs;
-static int alsa_samplewidth;
-static snd_pcm_status_t* in_status;
-static snd_pcm_status_t* out_status;
-
-static int alsa_mode;
-static int alsa_buf_samps; /* believed actual ALSA bufsize in sample frames */
-static int alsa_inchannels;
-static int alsa_outchannels;
-
-/* Defines */
-#define DEBUG(x) x
-#define DEBUG2(x) {x;}
-
-static void alsa_checkiosync( void);
-static void alsa_numbertoname(int devno, char *devname, int nchar);
-
- /* don't assume we can turn all 31 bits when doing float-to-fix;
- otherwise some audio drivers (e.g. Midiman/ALSA) wrap around. */
-#define FMAX 0x7ffff000
-#define CLIP32(x) (((x)>FMAX)?FMAX:((x) < -FMAX)?-FMAX:(x))
-
-/* support for ALSA pcmv2 api by Karl MacMillan<karlmac@peabody.jhu.edu> */
-
-static void check_error(int err, const char *why)
-{
- if (err < 0)
- fprintf(stderr, "%s: %s\n", why, snd_strerror(err));
-}
-
-/* was: alsa_open_audio(int wantinchans, int wantoutchans, int srate) */
-
-int alsa_open_audio(int naudioindev, int *audioindev, int nchindev,
- int *chindev, int naudiooutdev, int *audiooutdev, int nchoutdev,
- int *choutdev, int rate)
-{
- int err, inchans = 0, outchans = 0, subunitdir;
- char devname[512];
- snd_pcm_hw_params_t* hw_params;
- snd_pcm_sw_params_t* sw_params;
- snd_output_t* out;
- int frag_size = (sys_blocksize ? sys_blocksize : ALSA_DEFFRAGSIZE);
- int nfrags, i;
- short* tmp_buf;
- unsigned int tmp_uint;
- snd_pcm_uframes_t tmp_snd_pcm_uframes;
- int wantinchans, wantoutchans, devno;
-
- if (naudioindev >= 2 || naudiooutdev >= 2)
- post("alsa: only one input and output device allowed (extras ignored");
- if (naudioindev >= 1 && naudiooutdev >= 1 &&
- audioindev[0] != audiooutdev[0])
- post("alsa: changing output device to agree with input device");
- if (nchindev)
- wantinchans = chindev[0];
- else wantinchans = (naudioindev ? 2 : 0);
- if (nchoutdev)
- wantoutchans = choutdev[0];
- else wantoutchans = (naudiooutdev ? 2 : 0);
- devno = (naudioindev > 0 ? audioindev[0] :
- (naudiooutdev > 0 ? audiooutdev[0] : 0));
-
- alsa_numbertoname(devno, devname, 512);
-
- if (sys_verbose)
- post("device name %s; channels in %d, out %d", devname, wantinchans,
- wantoutchans);
-
- nfrags = sys_schedadvance * (float)rate / (1e6 * frag_size);
- /* save our belief as to ALSA's buffer size for later */
- alsa_buf_samps = nfrags * frag_size;
-
- if (sys_verbose)
- post("audio buffer set to %d", (int)(0.001 * sys_schedadvance));
-
- alsa_device.innoninterleave = alsa_device.outnoninterleave = 0;
- if (wantinchans)
- {
- err = snd_pcm_open(&alsa_device.inhandle, devname,
- SND_PCM_STREAM_CAPTURE, SND_PCM_NONBLOCK);
-
- check_error(err, "snd_pcm_open (input)");
- if (err < 0)
- inchans = 0;
- else
- {
- inchans = wantinchans;
- snd_pcm_nonblock(alsa_device.inhandle, 1);
- }
- }
- if (wantoutchans)
- {
- err = snd_pcm_open(&alsa_device.outhandle, devname,
- SND_PCM_STREAM_PLAYBACK, SND_PCM_NONBLOCK);
-
- check_error(err, "snd_pcm_open (output)");
- if (err < 0)
- outchans = 0;
- else
- {
- outchans = wantoutchans;
- snd_pcm_nonblock(alsa_device.outhandle, 1);
- }
- }
- if (inchans)
- {
- if (sys_verbose)
- post("opening sound input...");
- err = snd_pcm_hw_params_malloc(&hw_params);
- check_error(err, "snd_pcm_hw_params_malloc (input)");
-
- // get the default params
- err = snd_pcm_hw_params_any(alsa_device.inhandle, hw_params);
- check_error(err, "snd_pcm_hw_params_any (input)");
-
- /* try to set interleaved access */
- err = snd_pcm_hw_params_set_access(alsa_device.inhandle,
- hw_params, SND_PCM_ACCESS_RW_INTERLEAVED);
- if (err < 0)
- {
- /* OK, so try non-interleaved */
- err = snd_pcm_hw_params_set_access(alsa_device.inhandle,
- hw_params, SND_PCM_ACCESS_RW_NONINTERLEAVED);
- if (err >= 0)
- {
- post("using non-interleaved audio input");
- alsa_device.innoninterleave = 1;
- }
- }
- check_error(err, "snd_pcm_hw_params_set_access (input)");
- // Try to set 32 bit format first
- err = snd_pcm_hw_params_set_format(alsa_device.inhandle, hw_params,
- SND_PCM_FORMAT_S32);
- if (err < 0)
- {
- /* fprintf(stderr,
- "PD-ALSA: 32 bit format not available - using 16\n"); */
- err = snd_pcm_hw_params_set_format(alsa_device.inhandle, hw_params,
- SND_PCM_FORMAT_S16);
- check_error(err, "snd_pcm_hw_params_set_format (input)");
- alsa_samplewidth = 2;
- }
- else
- {
- alsa_samplewidth = 4;
- }
- post("Sample width set to %d bytes", alsa_samplewidth);
- // set the subformat
- err = snd_pcm_hw_params_set_subformat(alsa_device.inhandle, hw_params,
- SND_PCM_SUBFORMAT_STD);
- check_error(err, "snd_pcm_hw_params_set_subformat (input)");
- // set the number of channels
- tmp_uint = inchans;
- err = snd_pcm_hw_params_set_channels_min(alsa_device.inhandle,
- hw_params, &tmp_uint);
- check_error(err, "snd_pcm_hw_params_set_channels (input)");
- if (tmp_uint != (unsigned)inchans)
- post("ALSA: set input channels to %d", tmp_uint);
- inchans = tmp_uint;
- // set the sampling rate
- err = snd_pcm_hw_params_set_rate_min(alsa_device.inhandle, hw_params,
- &rate, 0);
- check_error(err, "snd_pcm_hw_params_set_rate_min (input)");
-#if 0
- err = snd_pcm_hw_params_get_rate(hw_params, &subunitdir);
- post("input sample rate %d", err);
-#endif
- // set the period - ie frag size
- // post("fragsize a %d", frag_size);
-
- /* LATER try this to get a recommended period size...
- right now, it trips an assertion failure in ALSA lib */
-#if 0
- post("input period was %d, min %d, max %d\n",
- snd_pcm_hw_params_get_period_size(hw_params, 0),
- snd_pcm_hw_params_get_period_size_min(hw_params, 0),
- snd_pcm_hw_params_get_period_size_max(hw_params, 0));
-#endif
-#ifdef ALSAAPI9
- err = snd_pcm_hw_params_set_period_size_near(alsa_device.inhandle,
- hw_params,
- (snd_pcm_uframes_t)
- frag_size, 0);
-#else
- tmp_snd_pcm_uframes = frag_size;
- err = snd_pcm_hw_params_set_period_size_near(alsa_device.inhandle,
- hw_params, &tmp_snd_pcm_uframes, 0);
-#endif
- check_error(err, "snd_pcm_hw_params_set_period_size_near (input)");
- // post("fragsize b %d", frag_size);
- // set the number of periods - ie numfrags
- // post("nfrags a %d", nfrags);
-#ifdef ALSAAPI9
- err = snd_pcm_hw_params_set_periods_near(alsa_device.inhandle,
- hw_params, nfrags, 0);
-#else
- tmp_uint = nfrags;
- err = snd_pcm_hw_params_set_periods_near(alsa_device.inhandle,
- hw_params, &tmp_uint, 0);
-#endif
- check_error(err, "snd_pcm_hw_params_set_periods_near (input)");
- // set the buffer size
-#ifdef ALSAAPI9
- err = snd_pcm_hw_params_set_buffer_size_near(alsa_device.inhandle,
- hw_params, nfrags * frag_size);
-#else
- tmp_snd_pcm_uframes = nfrags * frag_size;
- err = snd_pcm_hw_params_set_buffer_size_near(alsa_device.inhandle,
- hw_params, &tmp_snd_pcm_uframes);
-#endif
- check_error(err, "snd_pcm_hw_params_set_buffer_size_near (input)");
-
- err = snd_pcm_hw_params(alsa_device.inhandle, hw_params);
- check_error(err, "snd_pcm_hw_params (input)");
-
- snd_pcm_hw_params_free(hw_params);
-
- err = snd_pcm_sw_params_malloc(&sw_params);
- check_error(err, "snd_pcm_sw_params_malloc (input)");
- err = snd_pcm_sw_params_current(alsa_device.inhandle, sw_params);
- check_error(err, "snd_pcm_sw_params_current (input)");
- err = snd_pcm_sw_params_set_start_threshold(alsa_device.inhandle,
- sw_params, nfrags * frag_size);
- check_error(err, "snd_pcm_sw_params_set_start_threshold (input)");
- err = snd_pcm_sw_params_set_stop_threshold(alsa_device.inhandle,
- sw_params, 0x7fffffff);
- check_error(err, "snd_pcm_sw_params_set_stop_threshold (input)");
- err = snd_pcm_sw_params_set_avail_min(alsa_device.inhandle, sw_params,
- frag_size);
- check_error(err, "snd_pcm_sw_params_set_avail_min (input)");
- err = snd_pcm_sw_params(alsa_device.inhandle, sw_params);
- check_error(err, "snd_pcm_sw_params (input)");
-
- snd_pcm_sw_params_free(sw_params);
-
- snd_output_stdio_attach(&out, stderr, 0);
-#if 0
- if (sys_verbose)
- {
- snd_pcm_dump_hw_setup(alsa_device.inhandle, out);
- snd_pcm_dump_sw_setup(alsa_device.inhandle, out);
- }
-#endif
- }
-
- if (outchans)
- {
- int foo;
- if (sys_verbose)
- post("opening sound output...");
- err = snd_pcm_hw_params_malloc(&hw_params);
- check_error(err, "snd_pcm_sw_params (output)");
-
- // get the default params
- err = snd_pcm_hw_params_any(alsa_device.outhandle, hw_params);
- check_error(err, "snd_pcm_hw_params_any (output)");
- // set interleaved access - FIXME deal with other access types
- err = snd_pcm_hw_params_set_access(alsa_device.outhandle, hw_params,
- SND_PCM_ACCESS_RW_INTERLEAVED);
- check_error(err, "snd_pcm_hw_params_set_access (output)");
-
- /* try to set interleaved access */
- err = snd_pcm_hw_params_set_access(alsa_device.outhandle,
- hw_params, SND_PCM_ACCESS_RW_INTERLEAVED);
- if (err < 0)
- {
- /* OK, so try non-interleaved */
- err = snd_pcm_hw_params_set_access(alsa_device.outhandle,
- hw_params, SND_PCM_ACCESS_RW_NONINTERLEAVED);
- if (err >= 0)
- {
- post("using non-interleaved audio");
- alsa_device.outnoninterleave = 1;
- }
- }
- check_error(err, "snd_pcm_hw_params_set_access (output)");
-
-
- // Try to set 32 bit format first
- err = snd_pcm_hw_params_set_format(alsa_device.outhandle, hw_params,
- SND_PCM_FORMAT_S32);
- if (err < 0)
- {
- err = snd_pcm_hw_params_set_format(alsa_device.outhandle,
- hw_params,SND_PCM_FORMAT_S16);
- check_error(err, "snd_pcm_hw_params_set_format (output)");
- /* fprintf(stderr,
- "PD-ALSA: 32 bit format not available - using 16\n"); */
- alsa_samplewidth = 2;
- }
- else
- {
- alsa_samplewidth = 4;
- }
- // set the subformat
- err = snd_pcm_hw_params_set_subformat(alsa_device.outhandle, hw_params,
- SND_PCM_SUBFORMAT_STD);
- check_error(err, "snd_pcm_hw_params_set_subformat (output)");
- // set the number of channels
- tmp_uint = outchans;
- err = snd_pcm_hw_params_set_channels_min(alsa_device.outhandle,
- hw_params, &tmp_uint);
- check_error(err, "snd_pcm_hw_params_set_channels (output)");
- if (tmp_uint != (unsigned)outchans)
- post("alsa: set output channels to %d", tmp_uint);
- outchans = tmp_uint;
- // set the sampling rate
- err = snd_pcm_hw_params_set_rate_min(alsa_device.outhandle, hw_params,
- &rate, 0);
- check_error(err, "snd_pcm_hw_params_set_rate_min (output)");
-#if 0
- err = snd_pcm_hw_params_get_rate(hw_params, &subunitdir);
- post("output sample rate %d", err);
-#endif
- // set the period - ie frag size
-#if 0
- post("output period was %d, min %d, max %d\n",
- snd_pcm_hw_params_get_period_size(hw_params, 0),
- snd_pcm_hw_params_get_period_size_min(hw_params, 0),
- snd_pcm_hw_params_get_period_size_max(hw_params, 0));
-#endif
- // post("fragsize c %d", frag_size);
-#ifdef ALSAAPI9
- err = snd_pcm_hw_params_set_period_size_near(alsa_device.outhandle,
- hw_params,
- (snd_pcm_uframes_t)
- frag_size, 0);
-#else
- tmp_snd_pcm_uframes = frag_size;
- err = snd_pcm_hw_params_set_period_size_near(alsa_device.outhandle,
- hw_params, &tmp_snd_pcm_uframes, 0);
-#endif
- // post("fragsize d %d", frag_size);
- check_error(err, "snd_pcm_hw_params_set_period_size_near (output)");
- // set the number of periods - ie numfrags
-#ifdef ALSAAPI9
- err = snd_pcm_hw_params_set_periods_near(alsa_device.outhandle,
- hw_params, nfrags, 0);
-#else
- tmp_uint = nfrags;
- err = snd_pcm_hw_params_set_periods_near(alsa_device.outhandle,
- hw_params, &tmp_uint, 0);
-#endif
- check_error(err, "snd_pcm_hw_params_set_periods_near (output)");
- // set the buffer size
-#ifdef ALSAAPI9
- err = snd_pcm_hw_params_set_buffer_size_near(alsa_device.outhandle,
- hw_params, nfrags * frag_size);
-#else
- tmp_snd_pcm_uframes = nfrags * frag_size;
- err = snd_pcm_hw_params_set_buffer_size_near(alsa_device.outhandle,
- hw_params, &tmp_snd_pcm_uframes);
-#endif
- check_error(err, "snd_pcm_hw_params_set_buffer_size_near (output)");
-
- err = snd_pcm_hw_params(alsa_device.outhandle, hw_params);
- check_error(err, "snd_pcm_hw_params (output)");
-
- snd_pcm_hw_params_free(hw_params);
-
- err = snd_pcm_sw_params_malloc(&sw_params);
- check_error(err, "snd_pcm_sw_params_malloc (output)");
- err = snd_pcm_sw_params_current(alsa_device.outhandle, sw_params);
- check_error(err, "snd_pcm_sw_params_current (output)");
- err = snd_pcm_sw_params_set_start_threshold(alsa_device.outhandle,
- sw_params, nfrags * frag_size);
- check_error(err, "snd_pcm_sw_params_set_start_threshold (output)");
- err = snd_pcm_sw_params_set_stop_threshold(alsa_device.outhandle,
- sw_params, 0x7fffffff);
- check_error(err, "snd_pcm_sw_params_set_stop_threshold (output)");
- err = snd_pcm_sw_params_set_avail_min(alsa_device.outhandle, sw_params,
- frag_size);
- check_error(err, "snd_pcm_sw_params_set_avail_min (output)");
- err = snd_pcm_sw_params(alsa_device.outhandle, sw_params);
- check_error(err, "snd_pcm_sw_params (output)");
- snd_pcm_sw_params_free(sw_params);
-
- snd_output_stdio_attach(&out, stderr, 0);
-#if 0
- if (sys_verbose)
- {
- snd_pcm_dump_hw_setup(alsa_device.outhandle, out);
- snd_pcm_dump_sw_setup(alsa_device.outhandle, out);
- }
-#endif
- }
-
- if (inchans)
- snd_pcm_prepare(alsa_device.inhandle);
- if (outchans)
- snd_pcm_prepare(alsa_device.outhandle);
-
- // if duplex we can link the channels so they start together
- if (inchans && outchans)
- snd_pcm_link(alsa_device.inhandle, alsa_device.outhandle);
-
- // set up the status variables
- err = snd_pcm_status_malloc(&in_status);
- check_error(err, "snd_pcm_status_malloc");
- err = snd_pcm_status_malloc(&out_status);
- check_error(err, "snd_pcm_status_malloc");
-
- // set up the buffer
- if (alsa_snd_buf)
- free(alsa_snd_buf);
- alsa_snd_buf = (void *)malloc(
- sizeof(char) * alsa_samplewidth * DEFDACBLKSIZE *
- (outchans > inchans ? outchans : inchans));
- memset(alsa_snd_buf, 0, sizeof(char) * alsa_samplewidth * DEFDACBLKSIZE *
- (outchans > inchans ? outchans : inchans));
- /* make an array of pointers too in case we need them */
- if (alsa_buf_ptrs)
- free(alsa_buf_ptrs);
- alsa_buf_ptrs = (void **)malloc(
- sizeof(void *) * (outchans > inchans ? outchans : inchans));
- for (i = 0; i < (outchans > inchans ? outchans : inchans); i++)
- alsa_buf_ptrs[i] = (t_alsa_sample32 *)alsa_snd_buf + i * DEFDACBLKSIZE;
-
- // fill the buffer with silence
- if (outchans)
- {
- i = (frag_size * nfrags)/DEFDACBLKSIZE + 1;
- while (i--)
- {
- if (alsa_device.outnoninterleave)
- snd_pcm_writen(alsa_device.outhandle, alsa_buf_ptrs,
- DEFDACBLKSIZE);
- else snd_pcm_writei(alsa_device.outhandle, alsa_snd_buf,
- DEFDACBLKSIZE);
- }
- /* confused about this: */
- /* if ((err = snd_pcm_start(alsa_device.outhandle) < 0))
- check_error(err, "output start failed\n"); */
- }
- else if (inchans)
- {
- if (snd_pcm_start(alsa_device.inhandle) < 0)
- check_error(err, "input start failed\n");
- }
- alsa_outchannels = outchans;
- alsa_inchannels = inchans;
-
- return (!(inchans || outchans));
-}
-
-void alsa_close_audio(void)
-{
- int err;
- if (alsa_inchannels)
- {
- err = snd_pcm_close(alsa_device.inhandle);
- check_error(err, "snd_pcm_close (input)");
- }
- if (alsa_outchannels)
- {
- err = snd_pcm_close(alsa_device.outhandle);
- check_error(err, "snd_pcm_close (output)");
- }
-}
-
-// #define DEBUG_ALSA_XFER
-
-int alsa_send_dacs(void)
-{
- static int16_t *sp;
- static int xferno = 0;
- static int callno = 0;
- static double timenow;
- double timelast;
- t_sample *fp, *fp1, *fp2;
- int i, j, k, err, devno = 0;
- int inputcount = 0, outputcount = 0, inputlate = 0, outputlate = 0;
- int result;
- int inchannels = (sys_inchannels > alsa_inchannels ?
- alsa_inchannels : sys_inchannels);
- int outchannels = (sys_outchannels > alsa_outchannels ?
- alsa_outchannels : sys_outchannels);
- unsigned int intransfersize = DEFDACBLKSIZE;
- unsigned int outtransfersize = DEFDACBLKSIZE;
-
- // get the status
- if (!inchannels && !outchannels)
- {
- return SENDDACS_NO;
- }
-
- timelast = timenow;
- timenow = sys_getrealtime();
-
-#ifdef DEBUG_ALSA_XFER
- if (timenow - timelast > 0.050)
- fprintf(stderr, "(%d)",
- (int)(1000 * (timenow - timelast))), fflush(stderr);
-#endif
-
- callno++;
-
- alsa_checkiosync(); /* check I/O are in sync and data not late */
-
- if (alsa_inchannels)
- {
- snd_pcm_status(alsa_device.inhandle, in_status);
- if (snd_pcm_status_get_avail(in_status) < intransfersize)
- return SENDDACS_NO;
- }
- if (alsa_outchannels)
- {
- snd_pcm_status(alsa_device.outhandle, out_status);
- if (snd_pcm_status_get_avail(out_status) < outtransfersize)
- return SENDDACS_NO;
- }
-
- /* do output */
- if (alsa_outchannels)
- {
- fp = sys_soundout;
- if (alsa_samplewidth == 4)
- {
- if (alsa_device.outnoninterleave)
- {
- int n = outchannels * DEFDACBLKSIZE;
- for (i = 0, fp1 = fp; i < n; i++)
- {
- float s1 = *fp1 * INT32_MAX;
- ((t_alsa_sample32 *)alsa_snd_buf)[i] = CLIP32(s1);
- }
- n = alsa_outchannels * DEFDACBLKSIZE;
- for (; i < n; i++)
- ((t_alsa_sample32 *)alsa_snd_buf)[i] = 0;
- }
- else
- {
- for (i = 0, fp1 = fp; i < outchannels; i++,
- fp1 += DEFDACBLKSIZE)
- {
- for (j = i, k = DEFDACBLKSIZE, fp2 = fp1; k--;
- j += alsa_outchannels, fp2++)
- {
- float s1 = *fp2 * INT32_MAX;
- ((t_alsa_sample32 *)alsa_snd_buf)[j] = CLIP32(s1);
- }
- }
- }
- }
- else
- {
- for (i = 0, fp1 = fp; i < outchannels; i++, fp1 += DEFDACBLKSIZE)
- {
- for (j = i, k = DEFDACBLKSIZE, fp2 = fp1; k--;
- j += alsa_outchannels, fp2++)
- {
- int s = *fp2 * 32767.;
- if (s > 32767)
- s = 32767;
- else if (s < -32767)
- s = -32767;
- ((t_alsa_sample16 *)alsa_snd_buf)[j] = s;
- }
- }
- }
-
- if (alsa_device.outnoninterleave)
- result = snd_pcm_writen(alsa_device.outhandle, alsa_buf_ptrs,
- outtransfersize);
- else result = snd_pcm_writei(alsa_device.outhandle, alsa_snd_buf,
- outtransfersize);
-
- if (result != (int)outtransfersize)
- {
- #ifdef DEBUG_ALSA_XFER
- if (result >= 0 || errno == EAGAIN)
- fprintf(stderr, "ALSA: write returned %d of %d\n",
- result, outtransfersize);
- else fprintf(stderr, "ALSA: write: %s\n",
- snd_strerror(errno));
- fprintf(stderr,
- "inputcount %d, outputcount %d, outbufsize %d\n",
- inputcount, outputcount,
- (ALSA_EXTRABUFFER + sys_advance_samples)
- * alsa_samplewidth * outchannels);
- #endif
- sys_log_error(ERR_DACSLEPT);
- return (SENDDACS_NO);
- }
-
- /* zero out the output buffer */
- memset(sys_soundout, 0, DEFDACBLKSIZE * sizeof(*sys_soundout) *
- sys_outchannels);
- if (sys_getrealtime() - timenow > 0.002)
- {
- #ifdef DEBUG_ALSA_XFER
- fprintf(stderr, "output %d took %d msec\n",
- callno, (int)(1000 * (timenow - timelast))), fflush(stderr);
- #endif
- timenow = sys_getrealtime();
- sys_log_error(ERR_DACSLEPT);
- }
- }
- /* do input */
- if (alsa_inchannels)
- {
- if (alsa_device.innoninterleave)
- result = snd_pcm_readn(alsa_device.inhandle, alsa_buf_ptrs,
- intransfersize);
- else result = snd_pcm_readi(alsa_device.inhandle, alsa_snd_buf,
- intransfersize);
- if (result < (int)intransfersize)
- {
-#ifdef DEBUG_ALSA_XFER
- if (result < 0)
- fprintf(stderr,
- "snd_pcm_read %d %d: %s\n",
- callno, xferno, snd_strerror(errno));
- else fprintf(stderr,
- "snd_pcm_read %d %d returned only %d\n",
- callno, xferno, result);
- fprintf(stderr,
- "inputcount %d, outputcount %d, inbufsize %d\n",
- inputcount, outputcount,
- (ALSA_EXTRABUFFER + sys_advance_samples)
- * alsa_samplewidth * inchannels);
-#endif
- sys_log_error(ERR_ADCSLEPT);
- return (SENDDACS_NO);
- }
- fp = sys_soundin;
- if (alsa_samplewidth == 4)
- {
- if (alsa_device.innoninterleave)
- {
- int n = inchannels * DEFDACBLKSIZE;
- for (i = 0, fp1 = fp; i < n; i++)
- *fp1 = (float) ((t_alsa_sample32 *)alsa_snd_buf)[i]
- * (1./ INT32_MAX);
- }
- else
- {
- for (i = 0, fp1 = fp; i < inchannels;
- i++, fp1 += DEFDACBLKSIZE)
- {
- for (j = i, k = DEFDACBLKSIZE, fp2 = fp1; k--;
- j += alsa_inchannels, fp2++)
- *fp2 = (float) ((t_alsa_sample32 *)alsa_snd_buf)[j]
- * (1./ INT32_MAX);
- }
- }
- }
- else
- {
- for (i = 0, fp1 = fp; i < inchannels; i++, fp1 += DEFDACBLKSIZE)
- {
- for (j = i, k = DEFDACBLKSIZE, fp2 = fp1; k--;
- j += alsa_inchannels, fp2++)
- *fp2 = (float) ((t_alsa_sample16 *)alsa_snd_buf)[j]
- * 3.051850e-05;
- }
- }
- }
- xferno++;
- if (sys_getrealtime() - timenow > 0.002)
- {
-#ifdef DEBUG_ALSA_XFER
- fprintf(stderr, "routine took %d msec\n",
- (int)(1000 * (sys_getrealtime() - timenow)));
-#endif
- sys_log_error(ERR_ADCSLEPT);
- }
- return SENDDACS_YES;
-}
-
-void alsa_printstate( void)
-{
- int i, result;
- snd_pcm_sframes_t indelay, outdelay;
- if (sys_audioapi != API_ALSA)
- {
- error("restart-audio: implemented for ALSA only.");
- return;
- }
- if (sys_inchannels)
- {
- result = snd_pcm_delay(alsa_device.inhandle, &indelay);
- if (result < 0)
- post("snd_pcm_delay 1 failed");
- else post("in delay %d", indelay);
- }
- if (sys_outchannels)
- {
- result = snd_pcm_delay(alsa_device.outhandle, &outdelay);
- if (result < 0)
- post("snd_pcm_delay 2 failed");
- else post("out delay %d", outdelay);
- }
- post("sum %d (%d mod 64)\n", indelay + outdelay, (indelay+outdelay)%64);
-
- post("buf samples %d", alsa_buf_samps);
-}
-
-
-void alsa_resync( void)
-{
- int i, result;
- if (sys_audioapi != API_ALSA)
- {
- error("restart-audio: implemented for ALSA only.");
- return;
- }
- memset(alsa_snd_buf, 0,
- sizeof(char) * alsa_samplewidth * DEFDACBLKSIZE * sys_outchannels);
- for (i = 0; i < 1000000; i++)
- {
- if (alsa_device.outnoninterleave)
- result = snd_pcm_writen(alsa_device.outhandle, alsa_buf_ptrs,
- DEFDACBLKSIZE);
- else result = snd_pcm_writei(alsa_device.outhandle, alsa_snd_buf,
- DEFDACBLKSIZE);
- if (result != (int)DEFDACBLKSIZE)
- break;
- }
- post("%d written", i);
-}
-
-void alsa_putzeros(int n)
-{
- int i, result;
- memset(alsa_snd_buf, 0,
- sizeof(char) * alsa_samplewidth * DEFDACBLKSIZE * alsa_outchannels);
- for (i = 0; i < n; i++)
- {
- if (alsa_device.outnoninterleave)
- result = snd_pcm_writen(alsa_device.outhandle, alsa_buf_ptrs,
- DEFDACBLKSIZE);
- else result = snd_pcm_writei(alsa_device.outhandle, alsa_snd_buf,
- DEFDACBLKSIZE);
-#if 0
- if (result != DEFDACBLKSIZE)
- post("result %d", result);
-#endif
- }
- /* post ("putzeros %d", n); */
-}
-
-void alsa_getzeros(int n)
-{
- int i, result;
- for (i = 0; i < n; i++)
- {
- result = snd_pcm_readi(alsa_device.inhandle, alsa_snd_buf,
- DEFDACBLKSIZE);
-#if 0
- if (result != DEFDACBLKSIZE)
- post("result %d", result);
-#endif
- }
- /* post ("getzeros %d", n); */
-}
-
- /* call this only if both input and output are open */
-static void alsa_checkiosync( void)
-{
- int i, result, checkit = 1, giveup = 1000, alreadylogged = 0;
- snd_pcm_sframes_t indelay, outdelay, defect;
-
- if (!(alsa_outchannels && alsa_inchannels))
- return;
- while (checkit)
- {
- checkit = 0;
- if (giveup-- <= 0)
- return;
- result = snd_pcm_delay(alsa_device.outhandle, &outdelay);
- if (result < 0)
- {
- post("output snd_pcm_delay failed: %s", snd_strerror(result));
- if (snd_pcm_status(alsa_device.outhandle, out_status) < 0)
- post("output snd_pcm_status failed");
- else post("astate %d",
- snd_pcm_status_get_state(out_status));
- return;
- }
- if (outdelay < 0)
- sys_log_error(ERR_DATALATE), alreadylogged = 1;
-
- if (sys_inchannels)
- {
- result = snd_pcm_delay(alsa_device.inhandle, &indelay);
- if (result < 0)
- {
- post("input snd_pcm_delay failed");
- return;
- }
- defect = indelay + outdelay - alsa_buf_samps;
- if (defect < -(3 * DEFDACBLKSIZE / 2) )
- {
- checkit = 1;
- alsa_putzeros(1);
- if (!alreadylogged)
- sys_log_error(ERR_RESYNC), alreadylogged = 1;
- }
- else if (defect > 0)
- {
- checkit = 1;
- alsa_getzeros(1);
- if (!alreadylogged)
- sys_log_error(ERR_RESYNC), alreadylogged = 1;
- }
- /* if (alreadylogged)
- post("in %d out %d defect %d", indelay, outdelay, defect); */
- }
- }
-}
-
-static int alsa_nnames = 0;
-static char **alsa_names = 0;
-
-void alsa_adddev(char *name)
-{
- if (alsa_nnames)
- alsa_names = (char **)t_resizebytes(alsa_names,
- alsa_nnames * sizeof(char *),
- (alsa_nnames+1) * sizeof(char *));
- else alsa_names = (char **)t_getbytes(sizeof(char *));
- alsa_names[alsa_nnames] = gensym(name)->s_name;
- alsa_nnames++;
-}
-
-static void alsa_numbertoname(int devno, char *devname, int nchar)
-{
- int ndev = 0, cardno = -1;
- while (!snd_card_next(&cardno) && cardno >= 0)
- ndev++;
- if (devno < 2*ndev)
- {
- if (devno & 1)
- snprintf(devname, nchar, "plughw:%d", devno/2);
- else snprintf(devname, nchar, "hw:%d", devno/2);
- }
- else if (devno <2*ndev + alsa_nnames)
- snprintf(devname, nchar, "%s", alsa_names[devno - 2*ndev]);
- else snprintf(devname, nchar, "???");
-}
-
- /* For each hardware card found, we list two devices, the "hard" and
- "plug" one. The card scan is derived from portaudio code. */
-void alsa_getdevs(char *indevlist, int *nindevs,
- char *outdevlist, int *noutdevs, int *canmulti,
- int maxndev, int devdescsize)
-{
- int ndev = 0, cardno = -1, i, j;
- *canmulti = 0; /* only one device; must be the same for input&output */
- while (!snd_card_next(&cardno) && cardno >= 0)
- {
- snd_ctl_t *ctl;
- snd_ctl_card_info_t *info;
- char devname[80];
- const char *desc;
- if (2 * ndev + 2 > maxndev)
- break;
- /* apparently, "cardno" is just a counter; but check that here */
- if (ndev != cardno)
- fprintf(stderr, "oops: ALSA cards not reported in order?\n");
- sprintf(devname, "hw:%d", cardno );
- /* fprintf(stderr, "\ntry %s...\n", devname); */
- if (snd_ctl_open(&ctl, devname, 0) >= 0)
- {
- snd_ctl_card_info_malloc(&info);
- snd_ctl_card_info(ctl, info);
- desc = snd_ctl_card_info_get_name(info);
- snd_ctl_card_info_free(info);
- }
- else
- {
- fprintf(stderr, "ALSA card scan error\n");
- desc = "???";
- }
- /* fprintf(stderr, "name: %s\n", snd_ctl_card_info_get_name(info)); */
- sprintf(indevlist + 2*ndev * devdescsize, "%s (hardware)", desc);
- sprintf(indevlist + (2*ndev + 1) * devdescsize, "%s (plug-in)", desc);
- sprintf(outdevlist + 2*ndev * devdescsize, "%s (hardware)", desc);
- sprintf(outdevlist + (2*ndev + 1) * devdescsize, "%s (plug-in)", desc);
- ndev++;
- }
- for (i = 0, j = 2*ndev; i < alsa_nnames; i++, j++)
- {
- if (j >= maxndev)
- break;
- snprintf(indevlist + j * devdescsize, devdescsize, "%s",
- alsa_names[i]);
- }
- *nindevs = *noutdevs = j;
-}
-