#include <alsa/asoundlib.h>
-#include "write.cmdline.h"
+#include "alsa_write.cmdline.h"
#include "error.h"
-extern struct gengetopt_args_info conf;
#define FORMAT SND_PCM_FORMAT_S16_LE
/** data specific to the alsa writer */
struct private_alsa_data {
-/** the alsa handle */
-snd_pcm_t *handle;
-/** determined and set by alsa_open() */
-size_t bytes_per_frame;
-struct timeval next_chunk;
+ /** the alsa handle */
+ snd_pcm_t *handle;
+ /** determined and set by alsa_open() */
+ size_t bytes_per_frame;
+ /** don't write anything until this time */
+ struct timeval next_chunk;
};
/*
snd_pcm_info_t *info;
snd_pcm_uframes_t period_size;
struct private_alsa_data *pad = para_calloc(sizeof(struct private_alsa_data));
- w->private_data = pad;
+ struct alsa_write_args_info *conf = w->conf;
+ w->private_data = pad;
snd_pcm_info_alloca(&info);
- err = snd_pcm_open(&pad->handle, conf.device_arg,
+ err = snd_pcm_open(&pad->handle, conf->device_arg,
SND_PCM_STREAM_PLAYBACK, 0);
if (err < 0)
return -E_PCM_OPEN;
if (snd_pcm_hw_params_set_format(pad->handle, hwparams, FORMAT) < 0)
return -E_SAMPLE_FORMAT;
if (snd_pcm_hw_params_set_channels(pad->handle, hwparams,
- conf.channels_arg) < 0)
+ conf->channels_arg) < 0)
return -E_CHANNEL_COUNT;
if (snd_pcm_hw_params_set_rate_near(pad->handle, hwparams,
- (unsigned int*) &conf.sample_rate_arg, 0) < 0)
+ (unsigned int*) &conf->sample_rate_arg, 0) < 0)
return -E_SET_RATE;
err = snd_pcm_hw_params_get_buffer_time_max(hwparams, &buffer_time, 0);
if (err < 0 || !buffer_time)
if (snd_pcm_sw_params(pad->handle, swparams) < 0)
return -E_SW_PARAMS;
pad->bytes_per_frame = snd_pcm_format_physical_width(FORMAT)
- * conf.channels_arg / 8;
+ * conf->channels_arg / 8;
// if (snd_pcm_nonblock(pad->handle, 1))
// PARA_ERROR_LOG("%s\n", "failed to set nonblock mode");
return period_size * pad->bytes_per_frame;
free(pad);
}
+__malloc void *alsa_parse_config(char *options)
+{
+ struct alsa_write_args_info *conf
+ = para_calloc(sizeof(struct alsa_write_args_info));
+ PARA_INFO_LOG("options: %s, %d\n", options, strcspn(options, " \t"));
+ int ret = alsa_cmdline_parser_string(options, conf, "alsa_write");
+ if (ret)
+ goto err_out;
+ PARA_INFO_LOG("help given: %d\n", conf->help_given);
+ return conf;
+err_out:
+ free(conf);
+ return NULL;
+}
+
/** the init function of the alsa writer */
void alsa_writer_init(struct writer *w)
{
w->close = alsa_close;
w->pre_select = alsa_write_pre_select;
w->post_select = alsa_write_post_select;
+ w->parse_config = alsa_parse_config;
w->shutdown = NULL; /* nothing to do */
}