/*
- * Copyright (C) 2009-2010 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2009-2011 Andre Noll <maan@systemlinux.org>
*
* Licensed under the GPL v2. For licencing details see COPYING.
*/
#include <regex.h>
#include <sys/ioctl.h>
#include <fcntl.h>
-#include <dirent.h>
#include <sys/soundcard.h>
#include <stdbool.h>
#include "oss_write.cmdline.h"
#include "error.h"
-/** Always use 16 bit little endian. */
-#define FORMAT AFMT_S16_LE
-
/** Data specific to the oss writer. */
struct private_oss_write_data {
/** The file handle of the device. */
int bytes_per_frame;
};
+static int get_oss_format(enum sample_format sf)
+{
+ switch (sf) {
+ case SF_S8: return AFMT_S8;
+ case SF_U8: return AFMT_U8;
+ case SF_S16_LE: return AFMT_S16_LE;
+ case SF_S16_BE: return AFMT_S16_BE;
+ case SF_U16_LE: return AFMT_U16_LE;
+ case SF_U16_BE: return AFMT_U16_BE;
+ default: return AFMT_S16_LE;
+ }
+}
+
static void oss_pre_select(struct sched *s, struct task *t)
{
struct writer_node *wn = container_of(t, struct writer_node, task);
struct private_oss_write_data *powd = wn->private_data;
int ret = btr_node_status(wn->btrn, wn->min_iqs, BTR_NT_LEAF);
- t->error = 0;
- if (ret < 0)
- sched_min_delay(s);
- else if (ret > 0)
- para_fd_set(powd->fd, &s->wfds, &s->max_fileno);
+ if (ret == 0)
+ return;
+ if (ret < 0 || !powd)
+ return sched_min_delay(s);
+ para_fd_set(powd->fd, &s->wfds, &s->max_fileno);
}
static void oss_close(struct writer_node *wn)
{
struct private_oss_write_data *powd = wn->private_data;
- if (powd->fd >= 0)
- close(powd->fd);
+ if (!powd)
+ return;
+ close(powd->fd);
free(powd);
}
* incorrectly believe that the device is still in 44.1 kHz mode when actually
* the speed is decreased to 22.05 kHz.
*/
-static int oss_init(struct writer_node *wn, unsigned samplerate, unsigned channels)
+static int oss_init(struct writer_node *wn, unsigned sample_rate,
+ unsigned channels, int sample_format)
{
- int ret, format = FORMAT;
+ int ret, format;
unsigned ch, rate;
struct oss_write_args_info *conf = wn->conf;
- struct private_oss_write_data *powd = wn->private_data;
+ struct private_oss_write_data *powd = para_calloc(sizeof(*powd));
PARA_INFO_LOG("opening %s\n", conf->device_arg);
ret = para_open(conf->device_arg, O_WRONLY, 0);
if (ret < 0)
- return ret;
+ goto err_free;
powd->fd = ret;
ret = mark_fd_nonblocking(powd->fd);
if (ret < 0)
goto err;
/* set PCM format */
+ sample_format = format = get_oss_format(sample_format);
ret = ioctl(powd->fd, SNDCTL_DSP_SETFMT, &format);
if (ret < 0) {
ret = -ERRNO_TO_PARA_ERROR(errno);
goto err;
}
ret = -E_BAD_SAMPLE_FORMAT;
- if (format != FORMAT)
+ if (format != sample_format)
goto err;
/* set number of channels */
- ret = -E_BAD_CHANNEL_COUNT;
- if (channels == 0)
- goto err;
ch = channels;
ret = ioctl(powd->fd, SNDCTL_DSP_CHANNELS, &ch);
if (ret < 0) {
ret = -E_BAD_CHANNEL_COUNT;
if (ch != channels)
goto err;
- powd->bytes_per_frame = ch * 2;
+ if (format == SF_U8 || format == SF_S8)
+ powd->bytes_per_frame = ch;
+ else
+ powd->bytes_per_frame = ch * 2;
/*
* Set sampling rate
* device, the the highest possible speed is automatically used. The
* value actually used is returned as the new value of the argument.
*/
- rate = samplerate;
+ rate = sample_rate;
ret = ioctl(powd->fd, SNDCTL_DSP_SPEED, &rate);
if (ret < 0) {
ret = -ERRNO_TO_PARA_ERROR(errno);
goto err;
}
- if (rate != samplerate) {
- unsigned min = PARA_MIN(rate, samplerate),
- max = PARA_MAX(rate, samplerate);
+ if (rate != sample_rate) {
+ unsigned min = PARA_MIN(rate, sample_rate),
+ max = PARA_MAX(rate, sample_rate);
/*
* Check whether the returned sample rate differs significantly
* from the requested one.
if (100 * max > 110 * min) /* more than 10% deviation */
goto err;
PARA_NOTICE_LOG("using %dHz rather than %dHz\n", rate,
- samplerate);
+ sample_rate);
}
wn->min_iqs = powd->bytes_per_frame;
+ wn->private_data = powd;
return 1;
err:
close(powd->fd);
- powd->fd = -1;
+err_free:
+ free(powd);
return ret;
}
struct task *t)
{
struct writer_node *wn = container_of(t, struct writer_node, task);
- struct oss_write_args_info *conf = wn->conf;
struct private_oss_write_data *powd = wn->private_data;
struct btr_node *btrn = wn->btrn;
size_t frames, bytes;
goto out;
if (ret == 0)
return;
- if (powd->fd < 0) {
- int32_t rate, ch;
- ret = -1;
- if (!conf->samplerate_given) /* config option trumps btr_exec */
- ret = get_btr_samplerate(wn->btrn, &rate);
- if (ret < 0)
- rate = conf->samplerate_arg;
- ret = -1;
- if (!conf->channels_given)
- ret = get_btr_channels(wn->btrn, &ch);
- if (ret < 0)
- ch = conf->channels_arg;
- ret = oss_init(wn, rate, ch);
+ if (!powd) {
+ int32_t rate, ch, format;
+ get_btr_sample_rate(btrn, &rate);
+ get_btr_channels(btrn, &ch);
+ get_btr_sample_format(btrn, &format);
+ ret = oss_init(wn, rate, ch, format);
if (ret < 0)
goto out;
return;
bytes = btr_next_buffer(btrn, &data);
frames = bytes / powd->bytes_per_frame;
if (!frames) { /* eof and less than a single frame available */
- ret = -E_OSS_EOF;
+ ret = -E_WRITE_COMMON_EOF;
goto out;
}
ret = 0;
btr_remove_node(btrn);
}
-static int oss_open(struct writer_node *wn)
-{
- struct private_oss_write_data *powd;
-
- powd = para_calloc(sizeof(*powd));
- wn->private_data = powd;
- powd->fd = -1;
- return 1;
-}
-
-__malloc static void *oss_parse_config(const char *options)
+__malloc static void *oss_parse_config_or_die(const char *options)
{
- int ret;
struct oss_write_args_info *conf = para_calloc(sizeof(*conf));
- ret = oss_cmdline_parser_string(options, conf, "oss_write");
- if (ret)
- goto err_out;
+ /* exits on errors */
+ oss_cmdline_parser_string(options, conf, "oss_write");
return conf;
-err_out:
- free(conf);
- return NULL;
}
static void oss_free_config(void *conf)
struct oss_write_args_info dummy;
oss_cmdline_parser_init(&dummy);
- w->open = oss_open;
w->close = oss_close;
w->pre_select = oss_pre_select;
w->post_select = oss_post_select;
- w->parse_config = oss_parse_config;
+ w->parse_config_or_die = oss_parse_config_or_die;
w->free_config = oss_free_config;
w->shutdown = NULL;
w->help = (struct ggo_help) {
projects / paraslash.git / blobdiff