1/* tinypcminfo.c
2**
3** Copyright 2012, The Android Open Source Project
4**
5** Redistribution and use in source and binary forms, with or without
6** modification, are permitted provided that the following conditions are met:
7**     * Redistributions of source code must retain the above copyright
8**       notice, this list of conditions and the following disclaimer.
9**     * Redistributions in binary form must reproduce the above copyright
10**       notice, this list of conditions and the following disclaimer in the
11**       documentation and/or other materials provided with the distribution.
12**     * Neither the name of The Android Open Source Project nor the names of
13**       its contributors may be used to endorse or promote products derived
14**       from this software without specific prior written permission.
15**
16** THIS SOFTWARE IS PROVIDED BY The Android Open Source Project ``AS IS'' AND
17** ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19** ARE DISCLAIMED. IN NO EVENT SHALL The Android Open Source Project BE LIABLE
20** FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21** DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22** SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
23** CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24** LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25** OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
26** DAMAGE.
27*/
28
29#include <tinyalsa/asoundlib.h>
30#include <stdio.h>
31#include <stdlib.h>
32#include <string.h>
33
34int main(int argc, char **argv)
35{
36    unsigned int device = 0;
37    unsigned int card = 0;
38    int i;
39
40    if (argc < 3) {
41        fprintf(stderr, "Usage: %s -D card -d device\n", argv[0]);
42        return 1;
43    }
44
45    /* parse command line arguments */
46    argv += 1;
47    while (*argv) {
48        if (strcmp(*argv, "-D") == 0) {
49            argv++;
50            if (*argv)
51                card = atoi(*argv);
52        }
53        if (strcmp(*argv, "-d") == 0) {
54            argv++;
55            if (*argv)
56                device = atoi(*argv);
57        }
58        if (*argv)
59            argv++;
60    }
61
62    printf("Info for card %d, device %d:\n", card, device);
63
64    for (i = 0; i < 2; i++) {
65        struct pcm_params *params;
66        unsigned int min;
67        unsigned int max;
68
69        printf("\nPCM %s:\n", i == 0 ? "out" : "in");
70
71        params = pcm_params_get(card, device, i == 0 ? PCM_OUT : PCM_IN);
72        if (params == NULL) {
73            printf("Device does not exist.\n");
74            continue;
75        }
76
77        min = pcm_params_get_min(params, PCM_PARAM_RATE);
78        max = pcm_params_get_max(params, PCM_PARAM_RATE);
79        printf("        Rate:\tmin=%uHz\tmax=%uHz\n", min, max);
80        min = pcm_params_get_min(params, PCM_PARAM_CHANNELS);
81        max = pcm_params_get_max(params, PCM_PARAM_CHANNELS);
82        printf("    Channels:\tmin=%u\t\tmax=%u\n", min, max);
83        min = pcm_params_get_min(params, PCM_PARAM_SAMPLE_BITS);
84        max = pcm_params_get_max(params, PCM_PARAM_SAMPLE_BITS);
85        printf(" Sample bits:\tmin=%u\t\tmax=%u\n", min, max);
86        min = pcm_params_get_min(params, PCM_PARAM_PERIOD_SIZE);
87        max = pcm_params_get_max(params, PCM_PARAM_PERIOD_SIZE);
88        printf(" Period size:\tmin=%u\t\tmax=%u\n", min, max);
89        min = pcm_params_get_min(params, PCM_PARAM_PERIODS);
90        max = pcm_params_get_max(params, PCM_PARAM_PERIODS);
91        printf("Period count:\tmin=%u\t\tmax=%u\n", min, max);
92
93        pcm_params_free(params);
94    }
95
96    return 0;
97}
98