-/*
- * Copyright (C) 2005-2014 Andre Noll <maan@systemlinux.org>
- *
- * Licensed under the GPL v2. For licencing details see COPYING.
- */
+/* Copyright (C) 2005 Andre Noll <maan@tuebingen.mpg.de>, see file COPYING. */
/** \file alsa_write.c paraslash's alsa output plugin */
#include <regex.h>
#include <sys/types.h>
#include <alsa/asoundlib.h>
+#include <lopsub.h>
+#include "write_cmd.lsg.h"
#include "para.h"
#include "fd.h"
#include "string.h"
#include "list.h"
#include "sched.h"
-#include "ggo.h"
#include "buffer_tree.h"
#include "write.h"
-#include "write_common.h"
-#include "alsa_write.cmdline.h"
#include "error.h"
/** Data specific to the alsa writer. */
/* time until buffer underrun occurs, in milliseconds */
unsigned buffer_time;
struct timeval drain_barrier;
- /* File descriptor for select(). */
+ /* File descriptor to monitor for reading. */
int poll_fd;
};
}
/* Install PCM software and hardware configuration. */
-static int alsa_init(struct private_alsa_write_data *pad,
- struct alsa_write_args_info *conf)
+static int alsa_init(struct writer_node *wn)
{
- snd_pcm_hw_params_t *hwparams;
- snd_pcm_sw_params_t *swparams;
+ struct private_alsa_write_data *pad = wn->private_data;
+ snd_pcm_hw_params_t *hwparams = NULL;
+ snd_pcm_sw_params_t *swparams = NULL;
snd_pcm_uframes_t start_threshold, stop_threshold;
snd_pcm_uframes_t buffer_size, period_size;
snd_output_t *output_log;
int ret;
- const char *msg;
+ const char *msg, *dev = WRITE_CMD_OPT_STRING_VAL(ALSA, DEVICE, wn->lpr);
unsigned period_time;
- PARA_INFO_LOG("opening %s\n", conf->device_arg);
+ PARA_INFO_LOG("opening %s\n", dev);
msg = "unable to open pcm";
- ret = snd_pcm_open(&pad->handle, conf->device_arg,
- SND_PCM_STREAM_PLAYBACK, SND_PCM_NONBLOCK);
+ ret = snd_pcm_open(&pad->handle, dev, SND_PCM_STREAM_PLAYBACK,
+ SND_PCM_NONBLOCK);
if (ret < 0)
goto fail;
- snd_pcm_hw_params_alloca(&hwparams);
+ ret = snd_pcm_hw_params_malloc(&hwparams);
+ assert(ret >= 0);
msg = "Broken alsa configuration";
ret = snd_pcm_hw_params_any(pad->handle, hwparams);
if (ret < 0)
if (ret < 0)
goto fail;
/* alsa wants microseconds */
- pad->buffer_time = conf->buffer_time_arg * 1000;
+ pad->buffer_time = 1000U * WRITE_CMD_OPT_UINT32_VAL(ALSA, BUFFER_TIME,
+ wn->lpr);
msg = "could not set buffer time";
ret = snd_pcm_hw_params_set_buffer_time_near(pad->handle, hwparams,
&pad->buffer_time, NULL);
period_time = pad->buffer_time * 250; /* buffer time / 4 */
msg = "could not set period time";
ret = snd_pcm_hw_params_set_period_time_near(pad->handle, hwparams,
- &period_time, 0);
+ &period_time, NULL);
if (ret < 0)
goto fail;
goto fail;
/* software parameter setup */
- snd_pcm_sw_params_alloca(&swparams);
+ ret = snd_pcm_sw_params_malloc(&swparams);
+ assert(ret >= 0);
snd_pcm_sw_params_current(pad->handle, swparams);
snd_pcm_sw_params_set_avail_min(pad->handle, swparams, period_size);
if (buffer_size < 1)
}
snd_output_close(output_log);
}
- return 1;
+ ret = 1;
+ goto out;
fail:
if (ret < 0)
PARA_ERROR_LOG("%s: %s\n", msg, snd_strerror(-ret));
else
PARA_ERROR_LOG("%s\n", msg);
- return -E_ALSA;
+ ret = -E_ALSA;
+out:
+ snd_pcm_hw_params_free(hwparams);
+ snd_pcm_sw_params_free(swparams);
+ return ret;
}
-static void alsa_write_pre_select(struct sched *s, struct task *t)
+static void alsa_write_pre_monitor(struct sched *s, void *context)
{
struct pollfd pfd;
- struct writer_node *wn = container_of(t, struct writer_node, task);
+ struct writer_node *wn = context;
struct private_alsa_write_data *pad = wn->private_data;
int ret = btr_node_status(wn->btrn, wn->min_iqs, BTR_NT_LEAF);
return;
}
pad->poll_fd = pfd.fd;
- para_fd_set(pfd.fd, &s->rfds, &s->max_fileno);
+ sched_monitor_readfd(pfd.fd, s);
}
static void alsa_close(struct writer_node *wn)
if (!pad)
return;
+ if (!pad->handle)
+ goto free_pad;
/*
* It's OK to have a blocking operation here because we already made
* sure that the PCM output buffer is (nearly) empty.
snd_pcm_drain(pad->handle);
snd_pcm_close(pad->handle);
snd_config_update_free_global();
+free_pad:
free(pad);
}
-static int alsa_write_post_select(__a_unused struct sched *s,
- struct task *t)
+static int alsa_write_post_monitor(__a_unused struct sched *s, void *context)
{
- struct writer_node *wn = container_of(t, struct writer_node, task);
+ struct writer_node *wn = context;
struct private_alsa_write_data *pad = wn->private_data;
struct btr_node *btrn = wn->btrn;
char *data;
snd_pcm_sframes_t frames;
int ret;
- ret = task_get_notification(t);
+ ret = task_get_notification(wn->task);
if (ret < 0)
goto err;
again:
ret = btr_node_status(btrn, wn->min_iqs, BTR_NT_LEAF);
+ if (ret < 0)
+ goto err;
if (ret == 0)
return 0;
btr_merge(btrn, wn->min_iqs);
bytes = btr_next_buffer(btrn, &data);
if (ret < 0 || bytes < wn->min_iqs) { /* eof */
assert(btr_no_parent(btrn));
- ret = -E_WRITE_COMMON_EOF;
+ ret = -E_EOF;
if (!pad)
goto err;
/* wait until pending frames are played */
if (bytes == 0) /* no data available */
return 0;
- pad = para_calloc(sizeof(*pad));
- get_btr_sample_rate(btrn, &val);
+ pad = wn->private_data = zalloc(sizeof(*pad));
+ ret = get_btr_sample_rate(btrn, &val);
+ if (ret < 0)
+ goto err;
pad->sample_rate = val;
- get_btr_channels(btrn, &val);
+ ret = get_btr_channels(btrn, &val);
+ if (ret < 0)
+ goto err;
pad->channels = val;
- get_btr_sample_format(btrn, &val);
+ ret = get_btr_sample_format(btrn, &val);
+ if (ret < 0)
+ goto err;
pad->sample_format = get_alsa_pcm_format(val);
-
- PARA_INFO_LOG("%d channel(s), %dHz\n", pad->channels,
+ PARA_INFO_LOG("%u channel(s), %uHz\n", pad->channels,
pad->sample_rate);
- ret = alsa_init(pad, wn->conf);
- if (ret < 0) {
- free(pad);
+ ret = alsa_init(wn);
+ if (ret < 0)
goto err;
- }
- wn->private_data = pad;
wn->min_iqs = pad->bytes_per_frame;
goto again;
}
frames = snd_pcm_writei(pad->handle, data, frames);
if (frames == 0 || frames == -EAGAIN) {
char buf[100];
- if (pad->poll_fd >= 0 && FD_ISSET(pad->poll_fd, &s->rfds))
+ if (pad->poll_fd >= 0 && sched_read_ok(pad->poll_fd, s))
if (read(pad->poll_fd, buf, 100))
do_nothing;
return 0;
goto again;
}
if (frames == -EPIPE) {
- PARA_WARNING_LOG("underrun (tried to write %zu bytes)\n", bytes);
+ snd_pcm_status_t *status;
+ snd_pcm_status_malloc(&status);
+ if (snd_pcm_status_get_state(status) == SND_PCM_STATE_XRUN)
+ PARA_WARNING_LOG("underrun\n");
+ snd_pcm_status_free(status);
snd_pcm_prepare(pad->handle);
return 0;
}
return ret;
}
-__malloc static void *alsa_parse_config_or_die(int argc, char **argv)
-{
- struct alsa_write_args_info *conf = para_calloc(sizeof(*conf));
-
- /* exits on errors */
- alsa_write_cmdline_parser(argc, argv, conf);
- return conf;
-}
-
-static void alsa_free_config(void *conf)
-{
- alsa_write_cmdline_parser_free(conf);
-}
+struct writer lsg_write_cmd_com_alsa_user_data = {
-/**
- * The init function of the alsa writer.
- *
- * \param w Pointer to the writer to initialize.
- *
- * \sa struct \ref writer.
- */
-void alsa_write_init(struct writer *w)
-{
- struct alsa_write_args_info dummy;
-
- alsa_write_cmdline_parser_init(&dummy);
- w->close = alsa_close;
- w->pre_select = alsa_write_pre_select;
- w->post_select = alsa_write_post_select;
- w->parse_config_or_die = alsa_parse_config_or_die;
- w->free_config = alsa_free_config;
- w->help = (struct ggo_help)DEFINE_GGO_HELP(alsa_write);
- alsa_write_cmdline_parser_free(&dummy);
-}
+ .pre_monitor = alsa_write_pre_monitor,
+ .post_monitor = alsa_write_post_monitor,
+ .close = alsa_close,
+};
projects / paraslash.git / blobdiff