soundout autoconf

1 files changed, 0 insertions, 152 deletions

diff --git a/gtk/soundout/alsaout.c b/gtk/soundout/alsaout.c
deleted file mode 100644
index 5c5e667..0000000
--- a/gtk/soundout/alsaout.c
+++ /dev/null
@@ -1,152 +0,0 @@
-#include "alsaout.h"
-#include <stdbool.h>
-#include <stdatomic.h>
-#include <stdlib.h>
-#include <sys/eventfd.h>
-#include <pthread.h>
-#include <unistd.h>
-#include <poll.h>
-#include <asoundlib.h>
-
-enum {
-  BUF_FRAMES = 1024,
-};
-
-struct alsaout_state {
-  struct sound_state ss;
-  sound_callback cbfunc;
-  void *userptr;
-  snd_pcm_t *apcm;
-  int fd_event;
-  int fds_space;
-  struct pollfd *fds;
-  bool paused;
-  bool terminate;
-  atomic_flag cb_flag;
-  bool thread_valid;
-  pthread_t alsa_thread;
-  int16_t buf[BUF_FRAMES*2];
-};
-
-static void *alsaout_thread(void *ptr) {
-  struct alsaout_state *as = ptr;
-  for (;;) {
-    as->fds[0] = (struct pollfd) {
-      .fd = as->fd_event,
-      .events = POLLIN,
-    };
-    int fd_cnt = 1;
-    fd_cnt += snd_pcm_poll_descriptors(
-        as->apcm, as->fds + 1, as->fds_space - 1
-    );
-    int err = poll(as->fds, fd_cnt, -1);
-    if (err <= 0) {
-      continue;
-    }
-    if (as->terminate) return 0;
-    if (as->fds[0].revents) {
-      uint64_t eventdata;
-      read(as->fd_event, &eventdata, sizeof(eventdata));
-    }
-    unsigned short event;
-    if (snd_pcm_poll_descriptors_revents(
-        as->apcm, as->fds + 1, fd_cnt - 1, &event) < 0) continue;
-    if (!event) continue;
-    snd_pcm_sframes_t frames = snd_pcm_avail_update(as->apcm);
-    if (frames <= 0) continue;
-    while (frames) {
-      snd_pcm_sframes_t genframes = frames;
-      if (genframes > BUF_FRAMES) genframes = BUF_FRAMES;
-      while (atomic_flag_test_and_set_explicit(
-          &as->cb_flag, memory_order_acquire));
-      if (as->paused) {
-        atomic_flag_clear_explicit(&as->cb_flag, memory_order_release);
-        break;
-      }
-      as->cbfunc(as->userptr, as->buf, genframes);
-      atomic_flag_clear_explicit(&as->cb_flag, memory_order_release);
-      frames -= genframes;
-      if (snd_pcm_state(as->apcm) == SND_PCM_STATE_XRUN) {
-        err = snd_pcm_prepare(as->apcm);
-      }
-      snd_pcm_sframes_t written = snd_pcm_writei(as->apcm, as->buf, genframes);
-      if (written < 0) {
-        snd_pcm_prepare(as->apcm);
-      }
-    }
-  }
-}
-
-static void alsaout_pause(struct sound_state *ss, int pause, int flush) {
-  struct alsaout_state *as = (struct alsaout_state *)ss;
-  
-  while (atomic_flag_test_and_set_explicit(
-      &as->cb_flag, memory_order_acquire));
-  as->paused = pause;
-  snd_pcm_pause(as->apcm, pause);
-  atomic_flag_clear_explicit(&as->cb_flag, memory_order_release);
-  uint64_t event = 1;
-  write(as->fd_event, &event, sizeof(event));
-}
-
-static void alsaout_free(struct sound_state *ss) {
-  if (!ss) return;
-  struct alsaout_state *as = (struct alsaout_state *)ss;
-  if (as->thread_valid) {
-    as->terminate = true;
-    uint64_t event = 1;
-    write(as->fd_event, &event, sizeof(event));
-    pthread_join(as->alsa_thread, 0);
-  }
-  if (as->fd_event != -1) {
-    close(as->fd_event);
-  }
-  if (as->fds) free(as->fds);
-  if (as->apcm) {
-    snd_pcm_close(as->apcm);
-  }
-  free(as);
-}
-
-struct sound_state *alsaout_init(
-  const char *clientname, unsigned srate,
-  sound_callback cbfunc, void *userptr) {
-  (void)clientname;
-  struct alsaout_state *as = malloc(sizeof(*as));
-  if (!as) goto err;
-  *as = (struct alsaout_state) {
-    .ss = {
-      .pause = alsaout_pause,
-      .free = alsaout_free,
-      .apiname = "ALSA",
-    },
-    .cbfunc = cbfunc,
-    .userptr = userptr,
-    .fd_event = -1,
-    .cb_flag = ATOMIC_FLAG_INIT,
-    .paused = true,
-  };
-  if (snd_pcm_open(&as->apcm, "default", SND_PCM_STREAM_PLAYBACK, 0)) {
-    goto err;
-  }
-  as->fd_event = eventfd(0, EFD_CLOEXEC);
-  if (as->fd_event < 0) goto err;
-  as->fds_space = snd_pcm_poll_descriptors_count(as->apcm) + 1;
-  as->fds = malloc(sizeof(*as->fds) * as->fds_space);
-  if (!as->fds) goto err;
-  if (snd_pcm_set_params(
-      as->apcm,
-      SND_PCM_FORMAT_S16, SND_PCM_ACCESS_RW_INTERLEAVED, 2, srate, 1,
-      1000*1000/60)) {
-    goto err;
-  }
-  if (pthread_create(&as->alsa_thread, 0, alsaout_thread, as)) {
-    goto err;
-  }
-  as->thread_valid = true;
-  return as;
-
-err:
-  alsaout_free(&as->ss);
-  return 0;
-}