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/* -*- c++ -*- */
/*
* Copyright 2004 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* GNU Radio is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* GNU Radio is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Radio; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gri_alsa.h>
#include <algorithm>
static snd_pcm_access_t access_types[] = {
SND_PCM_ACCESS_MMAP_INTERLEAVED,
SND_PCM_ACCESS_MMAP_NONINTERLEAVED,
SND_PCM_ACCESS_MMAP_COMPLEX,
SND_PCM_ACCESS_RW_INTERLEAVED,
SND_PCM_ACCESS_RW_NONINTERLEAVED
};
static snd_pcm_format_t format_types[] = {
// SND_PCM_FORMAT_UNKNOWN,
SND_PCM_FORMAT_S8,
SND_PCM_FORMAT_U8,
SND_PCM_FORMAT_S16_LE,
SND_PCM_FORMAT_S16_BE,
SND_PCM_FORMAT_U16_LE,
SND_PCM_FORMAT_U16_BE,
SND_PCM_FORMAT_S24_LE,
SND_PCM_FORMAT_S24_BE,
SND_PCM_FORMAT_U24_LE,
SND_PCM_FORMAT_U24_BE,
SND_PCM_FORMAT_S32_LE,
SND_PCM_FORMAT_S32_BE,
SND_PCM_FORMAT_U32_LE,
SND_PCM_FORMAT_U32_BE,
SND_PCM_FORMAT_FLOAT_LE,
SND_PCM_FORMAT_FLOAT_BE,
SND_PCM_FORMAT_FLOAT64_LE,
SND_PCM_FORMAT_FLOAT64_BE,
SND_PCM_FORMAT_IEC958_SUBFRAME_LE,
SND_PCM_FORMAT_IEC958_SUBFRAME_BE,
SND_PCM_FORMAT_MU_LAW,
SND_PCM_FORMAT_A_LAW,
SND_PCM_FORMAT_IMA_ADPCM,
SND_PCM_FORMAT_MPEG,
SND_PCM_FORMAT_GSM,
SND_PCM_FORMAT_SPECIAL,
SND_PCM_FORMAT_S24_3LE,
SND_PCM_FORMAT_S24_3BE,
SND_PCM_FORMAT_U24_3LE,
SND_PCM_FORMAT_U24_3BE,
SND_PCM_FORMAT_S20_3LE,
SND_PCM_FORMAT_S20_3BE,
SND_PCM_FORMAT_U20_3LE,
SND_PCM_FORMAT_U20_3BE,
SND_PCM_FORMAT_S18_3LE,
SND_PCM_FORMAT_S18_3BE,
SND_PCM_FORMAT_U18_3LE,
SND_PCM_FORMAT_U18_3BE
};
static unsigned int test_rates[] = {
8000, 16000, 22050, 32000, 44100, 48000, 96000, 192000
};
#define NELEMS(x) (sizeof(x)/sizeof(x[0]))
void
gri_alsa_dump_hw_params (snd_pcm_t *pcm, snd_pcm_hw_params_t *hwparams, FILE *fp)
{
fprintf (fp, "PCM name: %s\n", snd_pcm_name (pcm));
fprintf (fp, "Access types:\n");
for (unsigned i = 0; i < NELEMS (access_types); i++){
snd_pcm_access_t at = access_types[i];
fprintf (fp, " %-20s %s\n",
snd_pcm_access_name (at),
snd_pcm_hw_params_test_access (pcm, hwparams, at) == 0 ? "YES" : "NO");
}
fprintf (fp, "Formats:\n");
for (unsigned i = 0; i < NELEMS (format_types); i++){
snd_pcm_format_t ft = format_types[i];
if (0)
fprintf (fp, " %-20s %s\n",
snd_pcm_format_name (ft),
snd_pcm_hw_params_test_format (pcm, hwparams, ft) == 0 ? "YES" : "NO");
else {
if (snd_pcm_hw_params_test_format (pcm, hwparams, ft) == 0)
fprintf (fp, " %-20s YES\n", snd_pcm_format_name (ft));
}
}
fprintf (fp, "Number of channels\n");
unsigned int min_chan, max_chan;
snd_pcm_hw_params_get_channels_min (hwparams, &min_chan);
snd_pcm_hw_params_get_channels_max (hwparams, &max_chan);
fprintf (fp, " min channels: %d\n", min_chan);
fprintf (fp, " max channels: %d\n", max_chan);
unsigned int chan;
max_chan = std::min (max_chan, 16U); // truncate display...
for (chan = min_chan; chan <= max_chan; chan++){
fprintf (fp, " %d channels\t%s\n", chan,
snd_pcm_hw_params_test_channels (pcm, hwparams, chan) == 0 ? "YES" : "NO");
}
fprintf (fp, "Sample Rates:\n");
unsigned int min_rate, max_rate;
int min_dir, max_dir;
snd_pcm_hw_params_get_rate_min (hwparams, &min_rate, &min_dir);
snd_pcm_hw_params_get_rate_max (hwparams, &max_rate, &max_dir);
fprintf (fp, " min rate: %7d (dir = %d)\n", min_rate, min_dir);
fprintf (fp, " max rate: %7d (dir = %d)\n", max_rate, max_dir);
for (unsigned i = 0; i < NELEMS (test_rates); i++){
unsigned int rate = test_rates[i];
fprintf (fp, " %6u %s\n", rate,
snd_pcm_hw_params_test_rate (pcm, hwparams, rate, 0) == 0 ? "YES" : "NO");
}
fflush (fp);
}
bool
gri_alsa_pick_acceptable_format (snd_pcm_t *pcm,
snd_pcm_hw_params_t *hwparams,
snd_pcm_format_t acceptable_formats[],
unsigned nacceptable_formats,
snd_pcm_format_t *selected_format,
const char *error_msg_tag,
bool verbose)
{
int err;
// pick a format that we like...
for (unsigned i = 0; i < nacceptable_formats; i++){
if (snd_pcm_hw_params_test_format (pcm, hwparams,
acceptable_formats[i]) == 0){
err = snd_pcm_hw_params_set_format (pcm, hwparams, acceptable_formats[i]);
if (err < 0){
fprintf (stderr, "%s[%s]: failed to set format: %s\n",
error_msg_tag, snd_pcm_name (pcm), snd_strerror (err));
return false;
}
if (verbose)
fprintf (stdout, "%s[%s]: using %s\n",
error_msg_tag, snd_pcm_name (pcm),
snd_pcm_format_name (acceptable_formats[i]));
*selected_format = acceptable_formats[i];
return true;
}
}
fprintf (stderr, "%s[%s]: failed to find acceptable format",
error_msg_tag, snd_pcm_name (pcm));
return false;
}
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