diff options
author | Simon Wilson <simonwilson@google.com> | 2012-12-03 10:45:26 -0800 |
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committer | Simon Wilson <simonwilson@google.com> | 2012-12-03 11:09:13 -0800 |
commit | f7f35cc62b51ec01cbf3787c8902e79cadbb85df (patch) | |
tree | 908dfb175d9940efcc6d431ff5e8911399d18786 /tinypcminfo.c | |
parent | 43544884f44313176621f57b370b4ba114fe5b8c (diff) |
Add tinypcminfo utility
This uses the new pcm_params_* API.
Diffstat (limited to 'tinypcminfo.c')
-rw-r--r-- | tinypcminfo.c | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/tinypcminfo.c b/tinypcminfo.c new file mode 100644 index 0000000..3282186 --- /dev/null +++ b/tinypcminfo.c @@ -0,0 +1,97 @@ +/* tinypcminfo.c +** +** Copyright 2012, The Android Open Source Project +** +** Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in the +** documentation and/or other materials provided with the distribution. +** * Neither the name of The Android Open Source Project nor the names of +** its contributors may be used to endorse or promote products derived +** from this software without specific prior written permission. +** +** THIS SOFTWARE IS PROVIDED BY The Android Open Source Project ``AS IS'' AND +** ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +** ARE DISCLAIMED. IN NO EVENT SHALL The Android Open Source Project BE LIABLE +** FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +** DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR +** SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER +** CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +** LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +** OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH +** DAMAGE. +*/ + +#include <tinyalsa/asoundlib.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +int main(int argc, char **argv) +{ + unsigned int device = 0; + unsigned int card = 0; + int i; + + if (argc < 3) { + fprintf(stderr, "Usage: %s -D card -d device\n", argv[0]); + return 1; + } + + /* parse command line arguments */ + argv += 1; + while (*argv) { + if (strcmp(*argv, "-D") == 0) { + argv++; + if (*argv) + card = atoi(*argv); + } + if (strcmp(*argv, "-d") == 0) { + argv++; + if (*argv) + device = atoi(*argv); + } + if (*argv) + argv++; + } + + printf("Info for card %d, device %d:\n", card, device); + + for (i = 0; i < 2; i++) { + struct pcm_params *params; + unsigned int min; + unsigned int max; + + printf("\nPCM %s:\n", i == 0 ? "out" : "in"); + + params = pcm_params_get(card, device, i == 0 ? PCM_OUT : PCM_IN); + if (params == NULL) { + printf("Device does not exist.\n"); + continue; + } + + min = pcm_params_get_min(params, PCM_PARAM_RATE); + max = pcm_params_get_max(params, PCM_PARAM_RATE); + printf(" Rate:\tmin=%uHz\tmax=%uHz\n", min, max); + min = pcm_params_get_min(params, PCM_PARAM_CHANNELS); + max = pcm_params_get_max(params, PCM_PARAM_CHANNELS); + printf(" Channels:\tmin=%u\t\tmax=%u\n", min, max); + min = pcm_params_get_min(params, PCM_PARAM_SAMPLE_BITS); + max = pcm_params_get_max(params, PCM_PARAM_SAMPLE_BITS); + printf(" Sample bits:\tmin=%u\t\tmax=%u\n", min, max); + min = pcm_params_get_min(params, PCM_PARAM_PERIOD_SIZE); + max = pcm_params_get_max(params, PCM_PARAM_PERIOD_SIZE); + printf(" Period size:\tmin=%u\t\tmax=%u\n", min, max); + min = pcm_params_get_min(params, PCM_PARAM_PERIODS); + max = pcm_params_get_max(params, PCM_PARAM_PERIODS); + printf("Period count:\tmin=%u\t\tmax=%u\n", min, max); + + pcm_params_free(params); + } + + return 0; +} |