Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 737 insertions, 0 deletions

diff --git a/third_party/rust/cubeb-sys/libcubeb/src/cubeb_sun.c b/third_party/rust/cubeb-sys/libcubeb/src/cubeb_sun.c
new file mode 100644
index 0000000000..d3dcb12ff3
--- /dev/null
+++ b/third_party/rust/cubeb-sys/libcubeb/src/cubeb_sun.c
@@ -0,0 +1,737 @@
+/*
+ * Copyright © 2019-2020 Nia Alarie <nia@NetBSD.org>
+ *
+ * This program is made available under an ISC-style license.  See the
+ * accompanying file LICENSE for details.
+ */
+#include "cubeb-internal.h"
+#include "cubeb/cubeb.h"
+#include "cubeb_tracing.h"
+#include <fcntl.h>
+#include <limits.h>
+#include <pthread.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/audioio.h>
+#include <sys/ioctl.h>
+#include <unistd.h>
+
+/* Default to 4 + 1 for the default device. */
+#ifndef SUN_DEVICE_COUNT
+#define SUN_DEVICE_COUNT (5)
+#endif
+
+/* Supported well by most hardware. */
+#ifndef SUN_PREFER_RATE
+#define SUN_PREFER_RATE (48000)
+#endif
+
+/* Standard acceptable minimum. */
+#ifndef SUN_LATENCY_MS
+#define SUN_LATENCY_MS (40)
+#endif
+
+#ifndef SUN_DEFAULT_DEVICE
+#define SUN_DEFAULT_DEVICE "/dev/audio"
+#endif
+
+#ifndef SUN_BUFFER_FRAMES
+#define SUN_BUFFER_FRAMES (32)
+#endif
+
+/*
+ * Supported on NetBSD regardless of hardware.
+ */
+
+#ifndef SUN_MAX_CHANNELS
+#ifdef __NetBSD__
+#define SUN_MAX_CHANNELS (12)
+#else
+#define SUN_MAX_CHANNELS (2)
+#endif
+#endif
+
+#ifndef SUN_MIN_RATE
+#define SUN_MIN_RATE (1000)
+#endif
+
+#ifndef SUN_MAX_RATE
+#define SUN_MAX_RATE (192000)
+#endif
+
+static struct cubeb_ops const sun_ops;
+
+struct cubeb {
+  struct cubeb_ops const * ops;
+};
+
+struct sun_stream {
+  char name[32];
+  int fd;
+  void * buf;
+  struct audio_info info;
+  unsigned frame_size; /* precision in bytes * channels */
+  bool floating;
+};
+
+struct cubeb_stream {
+  struct cubeb * context;
+  void * user_ptr;
+  pthread_t thread;
+  pthread_mutex_t mutex; /* protects running, volume, frames_written */
+  bool running;
+  float volume;
+  struct sun_stream play;
+  struct sun_stream record;
+  cubeb_data_callback data_cb;
+  cubeb_state_callback state_cb;
+  uint64_t frames_written;
+  uint64_t blocks_written;
+};
+
+int
+sun_init(cubeb ** context, char const * context_name)
+{
+  cubeb * c;
+
+  (void)context_name;
+  if ((c = calloc(1, sizeof(cubeb))) == NULL) {
+    return CUBEB_ERROR;
+  }
+  c->ops = &sun_ops;
+  *context = c;
+  return CUBEB_OK;
+}
+
+static void
+sun_destroy(cubeb * context)
+{
+  free(context);
+}
+
+static char const *
+sun_get_backend_id(cubeb * context)
+{
+  return "sun";
+}
+
+static int
+sun_get_preferred_sample_rate(cubeb * context, uint32_t * rate)
+{
+  (void)context;
+
+  *rate = SUN_PREFER_RATE;
+  return CUBEB_OK;
+}
+
+static int
+sun_get_max_channel_count(cubeb * context, uint32_t * max_channels)
+{
+  (void)context;
+
+  *max_channels = SUN_MAX_CHANNELS;
+  return CUBEB_OK;
+}
+
+static int
+sun_get_min_latency(cubeb * context, cubeb_stream_params params,
+                    uint32_t * latency_frames)
+{
+  (void)context;
+
+  *latency_frames = SUN_LATENCY_MS * params.rate / 1000;
+  return CUBEB_OK;
+}
+
+static int
+sun_get_hwinfo(const char * device, struct audio_info * format, int * props,
+               struct audio_device * dev)
+{
+  int fd = -1;
+
+  if ((fd = open(device, O_RDONLY)) == -1) {
+    goto error;
+  }
+#ifdef AUDIO_GETFORMAT
+  if (ioctl(fd, AUDIO_GETFORMAT, format) != 0) {
+    goto error;
+  }
+#endif
+#ifdef AUDIO_GETPROPS
+  if (ioctl(fd, AUDIO_GETPROPS, props) != 0) {
+    goto error;
+  }
+#endif
+  if (ioctl(fd, AUDIO_GETDEV, dev) != 0) {
+    goto error;
+  }
+  close(fd);
+  return CUBEB_OK;
+error:
+  if (fd != -1) {
+    close(fd);
+  }
+  return CUBEB_ERROR;
+}
+
+/*
+ * XXX: PR kern/54264
+ */
+static int
+sun_prinfo_verify_sanity(struct audio_prinfo * prinfo)
+{
+  return prinfo->precision >= 8 && prinfo->precision <= 32 &&
+         prinfo->channels >= 1 && prinfo->channels < SUN_MAX_CHANNELS &&
+         prinfo->sample_rate < SUN_MAX_RATE &&
+         prinfo->sample_rate > SUN_MIN_RATE;
+}
+
+static int
+sun_enumerate_devices(cubeb * context, cubeb_device_type type,
+                      cubeb_device_collection * collection)
+{
+  unsigned i;
+  cubeb_device_info device = {0};
+  char dev[16] = SUN_DEFAULT_DEVICE;
+  char dev_friendly[64];
+  struct audio_info hwfmt;
+  struct audio_device hwname;
+  struct audio_prinfo * prinfo = NULL;
+  int hwprops;
+
+  collection->device = calloc(SUN_DEVICE_COUNT, sizeof(cubeb_device_info));
+  if (collection->device == NULL) {
+    return CUBEB_ERROR;
+  }
+  collection->count = 0;
+
+  for (i = 0; i < SUN_DEVICE_COUNT; ++i) {
+    if (i > 0) {
+      (void)snprintf(dev, sizeof(dev), "/dev/audio%u", i - 1);
+    }
+    if (sun_get_hwinfo(dev, &hwfmt, &hwprops, &hwname) != CUBEB_OK) {
+      continue;
+    }
+#ifdef AUDIO_GETPROPS
+    device.type = 0;
+    if ((hwprops & AUDIO_PROP_CAPTURE) != 0 &&
+        sun_prinfo_verify_sanity(&hwfmt.record)) {
+      /* the device supports recording, probably */
+      device.type |= CUBEB_DEVICE_TYPE_INPUT;
+    }
+    if ((hwprops & AUDIO_PROP_PLAYBACK) != 0 &&
+        sun_prinfo_verify_sanity(&hwfmt.play)) {
+      /* the device supports playback, probably */
+      device.type |= CUBEB_DEVICE_TYPE_OUTPUT;
+    }
+    switch (device.type) {
+    case 0:
+      /* device doesn't do input or output, aliens probably involved */
+      continue;
+    case CUBEB_DEVICE_TYPE_INPUT:
+      if ((type & CUBEB_DEVICE_TYPE_INPUT) == 0) {
+        /* this device is input only, not scanning for those, skip it */
+        continue;
+      }
+      break;
+    case CUBEB_DEVICE_TYPE_OUTPUT:
+      if ((type & CUBEB_DEVICE_TYPE_OUTPUT) == 0) {
+        /* this device is output only, not scanning for those, skip it */
+        continue;
+      }
+      break;
+    }
+    if ((type & CUBEB_DEVICE_TYPE_INPUT) != 0) {
+      prinfo = &hwfmt.record;
+    }
+    if ((type & CUBEB_DEVICE_TYPE_OUTPUT) != 0) {
+      prinfo = &hwfmt.play;
+    }
+#endif
+    if (i > 0) {
+      (void)snprintf(dev_friendly, sizeof(dev_friendly), "%s %s %s (%d)",
+                     hwname.name, hwname.version, hwname.config, i - 1);
+    } else {
+      (void)snprintf(dev_friendly, sizeof(dev_friendly), "%s %s %s (default)",
+                     hwname.name, hwname.version, hwname.config);
+    }
+    device.devid = (void *)(uintptr_t)i;
+    device.device_id = strdup(dev);
+    device.friendly_name = strdup(dev_friendly);
+    device.group_id = strdup(dev);
+    device.vendor_name = strdup(hwname.name);
+    device.type = type;
+    device.state = CUBEB_DEVICE_STATE_ENABLED;
+    device.preferred =
+        (i == 0) ? CUBEB_DEVICE_PREF_ALL : CUBEB_DEVICE_PREF_NONE;
+#ifdef AUDIO_GETFORMAT
+    device.max_channels = prinfo->channels;
+    device.default_rate = prinfo->sample_rate;
+#else
+    device.max_channels = 2;
+    device.default_rate = SUN_PREFER_RATE;
+#endif
+    device.default_format = CUBEB_DEVICE_FMT_S16NE;
+    device.format = CUBEB_DEVICE_FMT_S16NE;
+    device.min_rate = SUN_MIN_RATE;
+    device.max_rate = SUN_MAX_RATE;
+    device.latency_lo = SUN_LATENCY_MS * SUN_MIN_RATE / 1000;
+    device.latency_hi = SUN_LATENCY_MS * SUN_MAX_RATE / 1000;
+    collection->device[collection->count++] = device;
+  }
+  return CUBEB_OK;
+}
+
+static int
+sun_device_collection_destroy(cubeb * context,
+                              cubeb_device_collection * collection)
+{
+  unsigned i;
+
+  for (i = 0; i < collection->count; ++i) {
+    free((char *)collection->device[i].device_id);
+    free((char *)collection->device[i].friendly_name);
+    free((char *)collection->device[i].group_id);
+    free((char *)collection->device[i].vendor_name);
+  }
+  free(collection->device);
+  return CUBEB_OK;
+}
+
+static int
+sun_copy_params(int fd, cubeb_stream * stream, cubeb_stream_params * params,
+                struct audio_info * info, struct audio_prinfo * prinfo)
+{
+  prinfo->channels = params->channels;
+  prinfo->sample_rate = params->rate;
+#ifdef AUDIO_ENCODING_SLINEAR_LE
+  switch (params->format) {
+  case CUBEB_SAMPLE_S16LE:
+    prinfo->encoding = AUDIO_ENCODING_SLINEAR_LE;
+    prinfo->precision = 16;
+    break;
+  case CUBEB_SAMPLE_S16BE:
+    prinfo->encoding = AUDIO_ENCODING_SLINEAR_BE;
+    prinfo->precision = 16;
+    break;
+  case CUBEB_SAMPLE_FLOAT32NE:
+    prinfo->encoding = AUDIO_ENCODING_SLINEAR;
+    prinfo->precision = 32;
+    break;
+  default:
+    LOG("Unsupported format");
+    return CUBEB_ERROR_INVALID_FORMAT;
+  }
+#else
+  switch (params->format) {
+  case CUBEB_SAMPLE_S16NE:
+    prinfo->encoding = AUDIO_ENCODING_LINEAR;
+    prinfo->precision = 16;
+    break;
+  case CUBEB_SAMPLE_FLOAT32NE:
+    prinfo->encoding = AUDIO_ENCODING_LINEAR;
+    prinfo->precision = 32;
+    break;
+  default:
+    LOG("Unsupported format");
+    return CUBEB_ERROR_INVALID_FORMAT;
+  }
+#endif
+  if (ioctl(fd, AUDIO_SETINFO, info) == -1) {
+    return CUBEB_ERROR;
+  }
+  if (ioctl(fd, AUDIO_GETINFO, info) == -1) {
+    return CUBEB_ERROR;
+  }
+  return CUBEB_OK;
+}
+
+static int
+sun_stream_stop(cubeb_stream * s)
+{
+  pthread_mutex_lock(&s->mutex);
+  if (s->running) {
+    s->running = false;
+    pthread_mutex_unlock(&s->mutex);
+    pthread_join(s->thread, NULL);
+  } else {
+    pthread_mutex_unlock(&s->mutex);
+  }
+  return CUBEB_OK;
+}
+
+static void
+sun_stream_destroy(cubeb_stream * s)
+{
+  sun_stream_stop(s);
+  pthread_mutex_destroy(&s->mutex);
+  if (s->play.fd != -1) {
+    close(s->play.fd);
+  }
+  if (s->record.fd != -1) {
+    close(s->record.fd);
+  }
+  free(s->play.buf);
+  free(s->record.buf);
+  free(s);
+}
+
+static void
+sun_float_to_linear32(void * buf, unsigned sample_count, float vol)
+{
+  float * in = buf;
+  int32_t * out = buf;
+  int32_t * tail = out + sample_count;
+
+  while (out < tail) {
+    float f = *(in++) * vol;
+    if (f < -1.0)
+      f = -1.0;
+    else if (f > 1.0)
+      f = 1.0;
+    *(out++) = f * (float)INT32_MAX;
+  }
+}
+
+static void
+sun_linear32_to_float(void * buf, unsigned sample_count)
+{
+  int32_t * in = buf;
+  float * out = buf;
+  float * tail = out + sample_count;
+
+  while (out < tail) {
+    *(out++) = (1.0 / 0x80000000) * *(in++);
+  }
+}
+
+static void
+sun_linear16_set_vol(int16_t * buf, unsigned sample_count, float vol)
+{
+  unsigned i;
+  int32_t multiplier = vol * 0x8000;
+
+  for (i = 0; i < sample_count; ++i) {
+    buf[i] = (buf[i] * multiplier) >> 15;
+  }
+}
+
+static void *
+sun_io_routine(void * arg)
+{
+  cubeb_stream * s = arg;
+  cubeb_state state = CUBEB_STATE_STARTED;
+  size_t to_read = 0;
+  long to_write = 0;
+  size_t write_ofs = 0;
+  size_t read_ofs = 0;
+  int drain = 0;
+
+  CUBEB_REGISTER_THREAD("cubeb rendering thread");
+
+  s->state_cb(s, s->user_ptr, CUBEB_STATE_STARTED);
+  while (state != CUBEB_STATE_ERROR) {
+    pthread_mutex_lock(&s->mutex);
+    if (!s->running) {
+      pthread_mutex_unlock(&s->mutex);
+      state = CUBEB_STATE_STOPPED;
+      break;
+    }
+    pthread_mutex_unlock(&s->mutex);
+    if (s->record.fd != -1 && s->record.floating) {
+      sun_linear32_to_float(s->record.buf,
+                            s->record.info.record.channels * SUN_BUFFER_FRAMES);
+    }
+    to_write = s->data_cb(s, s->user_ptr, s->record.buf, s->play.buf,
+                          SUN_BUFFER_FRAMES);
+    if (to_write == CUBEB_ERROR) {
+      state = CUBEB_STATE_ERROR;
+      break;
+    }
+    if (s->play.fd != -1) {
+      float vol;
+
+      pthread_mutex_lock(&s->mutex);
+      vol = s->volume;
+      pthread_mutex_unlock(&s->mutex);
+
+      if (s->play.floating) {
+        sun_float_to_linear32(s->play.buf,
+                              s->play.info.play.channels * to_write, vol);
+      } else {
+        sun_linear16_set_vol(s->play.buf, s->play.info.play.channels * to_write,
+                             vol);
+      }
+    }
+    if (to_write < SUN_BUFFER_FRAMES) {
+      drain = 1;
+    }
+    to_write = s->play.fd != -1 ? to_write : 0;
+    to_read = s->record.fd != -1 ? SUN_BUFFER_FRAMES : 0;
+    write_ofs = 0;
+    read_ofs = 0;
+    while (to_write > 0 || to_read > 0) {
+      size_t bytes;
+      ssize_t n, frames;
+
+      if (to_write > 0) {
+        bytes = to_write * s->play.frame_size;
+        if ((n = write(s->play.fd, (uint8_t *)s->play.buf + write_ofs, bytes)) <
+            0) {
+          state = CUBEB_STATE_ERROR;
+          break;
+        }
+        frames = n / s->play.frame_size;
+        pthread_mutex_lock(&s->mutex);
+        s->frames_written += frames;
+        pthread_mutex_unlock(&s->mutex);
+        to_write -= frames;
+        write_ofs += n;
+      }
+      if (to_read > 0) {
+        bytes = to_read * s->record.frame_size;
+        if ((n = read(s->record.fd, (uint8_t *)s->record.buf + read_ofs,
+                      bytes)) < 0) {
+          state = CUBEB_STATE_ERROR;
+          break;
+        }
+        frames = n / s->record.frame_size;
+        to_read -= frames;
+        read_ofs += n;
+      }
+    }
+    if (drain && state != CUBEB_STATE_ERROR) {
+      state = CUBEB_STATE_DRAINED;
+      break;
+    }
+  }
+  s->state_cb(s, s->user_ptr, state);
+  CUBEB_UNREGISTER_THREAD();
+  return NULL;
+}
+
+static int
+sun_stream_init(cubeb * context, cubeb_stream ** stream,
+                char const * stream_name, cubeb_devid input_device,
+                cubeb_stream_params * input_stream_params,
+                cubeb_devid output_device,
+                cubeb_stream_params * output_stream_params,
+                unsigned latency_frames, cubeb_data_callback data_callback,
+                cubeb_state_callback state_callback, void * user_ptr)
+{
+  int ret = CUBEB_OK;
+  cubeb_stream * s = NULL;
+
+  (void)stream_name;
+  (void)latency_frames;
+  if ((s = calloc(1, sizeof(cubeb_stream))) == NULL) {
+    ret = CUBEB_ERROR;
+    goto error;
+  }
+  s->record.fd = -1;
+  s->play.fd = -1;
+  if (input_device != 0) {
+    snprintf(s->record.name, sizeof(s->record.name), "/dev/audio%zu",
+             (uintptr_t)input_device - 1);
+  } else {
+    snprintf(s->record.name, sizeof(s->record.name), "%s", SUN_DEFAULT_DEVICE);
+  }
+  if (output_device != 0) {
+    snprintf(s->play.name, sizeof(s->play.name), "/dev/audio%zu",
+             (uintptr_t)output_device - 1);
+  } else {
+    snprintf(s->play.name, sizeof(s->play.name), "%s", SUN_DEFAULT_DEVICE);
+  }
+  if (input_stream_params != NULL) {
+    if (input_stream_params->prefs & CUBEB_STREAM_PREF_LOOPBACK) {
+      LOG("Loopback not supported");
+      ret = CUBEB_ERROR_NOT_SUPPORTED;
+      goto error;
+    }
+    if (s->record.fd == -1) {
+      if ((s->record.fd = open(s->record.name, O_RDONLY)) == -1) {
+        LOG("Audio device could not be opened as read-only");
+        ret = CUBEB_ERROR_DEVICE_UNAVAILABLE;
+        goto error;
+      }
+    }
+    AUDIO_INITINFO(&s->record.info);
+#ifdef AUMODE_RECORD
+    s->record.info.mode = AUMODE_RECORD;
+#endif
+    if ((ret = sun_copy_params(s->record.fd, s, input_stream_params,
+                               &s->record.info, &s->record.info.record)) !=
+        CUBEB_OK) {
+      LOG("Setting record params failed");
+      goto error;
+    }
+    s->record.floating =
+        (input_stream_params->format == CUBEB_SAMPLE_FLOAT32NE);
+  }
+  if (output_stream_params != NULL) {
+    if (output_stream_params->prefs & CUBEB_STREAM_PREF_LOOPBACK) {
+      LOG("Loopback not supported");
+      ret = CUBEB_ERROR_NOT_SUPPORTED;
+      goto error;
+    }
+    if (s->play.fd == -1) {
+      if ((s->play.fd = open(s->play.name, O_WRONLY)) == -1) {
+        LOG("Audio device could not be opened as write-only");
+        ret = CUBEB_ERROR_DEVICE_UNAVAILABLE;
+        goto error;
+      }
+    }
+    AUDIO_INITINFO(&s->play.info);
+#ifdef AUMODE_PLAY
+    s->play.info.mode = AUMODE_PLAY;
+#endif
+    if ((ret = sun_copy_params(s->play.fd, s, output_stream_params,
+                               &s->play.info, &s->play.info.play)) !=
+        CUBEB_OK) {
+      LOG("Setting play params failed");
+      goto error;
+    }
+    s->play.floating = (output_stream_params->format == CUBEB_SAMPLE_FLOAT32NE);
+  }
+  s->context = context;
+  s->volume = 1.0;
+  s->state_cb = state_callback;
+  s->data_cb = data_callback;
+  s->user_ptr = user_ptr;
+  if (pthread_mutex_init(&s->mutex, NULL) != 0) {
+    LOG("Failed to create mutex");
+    goto error;
+  }
+  s->play.frame_size =
+      s->play.info.play.channels * (s->play.info.play.precision / 8);
+  if (s->play.fd != -1 &&
+      (s->play.buf = calloc(SUN_BUFFER_FRAMES, s->play.frame_size)) == NULL) {
+    ret = CUBEB_ERROR;
+    goto error;
+  }
+  s->record.frame_size =
+      s->record.info.record.channels * (s->record.info.record.precision / 8);
+  if (s->record.fd != -1 &&
+      (s->record.buf = calloc(SUN_BUFFER_FRAMES, s->record.frame_size)) ==
+          NULL) {
+    ret = CUBEB_ERROR;
+    goto error;
+  }
+  *stream = s;
+  return CUBEB_OK;
+error:
+  if (s != NULL) {
+    sun_stream_destroy(s);
+  }
+  return ret;
+}
+
+static int
+sun_stream_start(cubeb_stream * s)
+{
+  s->running = true;
+  if (pthread_create(&s->thread, NULL, sun_io_routine, s) != 0) {
+    LOG("Couldn't create thread");
+    return CUBEB_ERROR;
+  }
+  return CUBEB_OK;
+}
+
+static int
+sun_stream_get_position(cubeb_stream * s, uint64_t * position)
+{
+#ifdef AUDIO_GETOOFFS
+  struct audio_offset offset;
+
+  if (ioctl(s->play.fd, AUDIO_GETOOFFS, &offset) == -1) {
+    return CUBEB_ERROR;
+  }
+  s->blocks_written += offset.deltablks;
+  *position = (s->blocks_written * s->play.info.blocksize) / s->play.frame_size;
+  return CUBEB_OK;
+#else
+  pthread_mutex_lock(&s->mutex);
+  *position = s->frames_written;
+  pthread_mutex_unlock(&s->mutex);
+  return CUBEB_OK;
+#endif
+}
+
+static int
+sun_stream_get_latency(cubeb_stream * s, uint32_t * latency)
+{
+#ifdef AUDIO_GETBUFINFO
+  struct audio_info info;
+
+  if (ioctl(s->play.fd, AUDIO_GETBUFINFO, &info) == -1) {
+    return CUBEB_ERROR;
+  }
+
+  *latency = (info.play.seek + info.blocksize) / s->play.frame_size;
+  return CUBEB_OK;
+#else
+  cubeb_stream_params params;
+
+  params.rate = s->play.info.play.sample_rate;
+
+  return sun_get_min_latency(NULL, params, latency);
+#endif
+}
+
+static int
+sun_stream_set_volume(cubeb_stream * stream, float volume)
+{
+  pthread_mutex_lock(&stream->mutex);
+  stream->volume = volume;
+  pthread_mutex_unlock(&stream->mutex);
+  return CUBEB_OK;
+}
+
+static int
+sun_get_current_device(cubeb_stream * stream, cubeb_device ** const device)
+{
+  *device = calloc(1, sizeof(cubeb_device));
+  if (*device == NULL) {
+    return CUBEB_ERROR;
+  }
+  (*device)->input_name =
+      stream->record.fd != -1 ? strdup(stream->record.name) : NULL;
+  (*device)->output_name =
+      stream->play.fd != -1 ? strdup(stream->play.name) : NULL;
+  return CUBEB_OK;
+}
+
+static int
+sun_stream_device_destroy(cubeb_stream * stream, cubeb_device * device)
+{
+  (void)stream;
+  free(device->input_name);
+  free(device->output_name);
+  free(device);
+  return CUBEB_OK;
+}
+
+static struct cubeb_ops const sun_ops = {
+    .init = sun_init,
+    .get_backend_id = sun_get_backend_id,
+    .get_max_channel_count = sun_get_max_channel_count,
+    .get_min_latency = sun_get_min_latency,
+    .get_preferred_sample_rate = sun_get_preferred_sample_rate,
+    .enumerate_devices = sun_enumerate_devices,
+    .device_collection_destroy = sun_device_collection_destroy,
+    .destroy = sun_destroy,
+    .stream_init = sun_stream_init,
+    .stream_destroy = sun_stream_destroy,
+    .stream_start = sun_stream_start,
+    .stream_stop = sun_stream_stop,
+    .stream_get_position = sun_stream_get_position,
+    .stream_get_latency = sun_stream_get_latency,
+    .stream_get_input_latency = NULL,
+    .stream_set_volume = sun_stream_set_volume,
+    .stream_set_name = NULL,
+    .stream_get_current_device = sun_get_current_device,
+    .stream_device_destroy = sun_stream_device_destroy,
+    .stream_register_device_changed_callback = NULL,
+    .register_device_collection_changed = NULL};