mirror of
https://github.com/alsa-project/alsa-lib.git
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Add test/chmap program
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
parent
662f79d4ec
commit
3fc13d6f5b
3 changed files with 257 additions and 1 deletions
1
.gitignore
vendored
1
.gitignore
vendored
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@ -51,6 +51,7 @@ test/latency
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test/midiloop
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test/namehint
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test/oldapi
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test/chmap
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test/pcm
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test/pcm_min
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test/playmidi1
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@ -2,7 +2,7 @@ SUBDIRS=. lsb
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check_PROGRAMS=control pcm pcm_min latency seq \
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playmidi1 timer rawmidi midiloop \
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oldapi queue_timer namehint client_event_filter
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oldapi queue_timer namehint client_event_filter chmap
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control_LDADD=../src/libasound.la
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pcm_LDADD=../src/libasound.la
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@ -18,6 +18,7 @@ queue_timer_LDADD=../src/libasound.la
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namehint_LDADD=../src/libasound.la
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client_event_filter_LDADD=../src/libasound.la
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code_CFLAGS=-Wall -pipe -g -O2
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chmap_LDADD=../src/libasound.la
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INCLUDES=-I$(top_srcdir)/include
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AM_CFLAGS=-Wall -pipe -g
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254
test/chmap.c
Normal file
254
test/chmap.c
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@ -0,0 +1,254 @@
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/*
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* channel mapping API test program
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <getopt.h>
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#include "../include/asoundlib.h"
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static void usage(void)
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{
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printf("usage: chmap [options] query\n"
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" chmap [options] get\n"
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" chmap [options] set CH0 CH1 CH2...\n"
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"options:\n"
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" -D device Specify PCM device to handle\n"
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" -f format PCM format\n"
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" -c channels Channels\n"
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" -r rate Sample rate\n");
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}
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static const char * const chname[] = {
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"Unknown",
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"FL", "FC", "FR",
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"FLC", "FRC", "RL", "RC", "RR",
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"RLC", "RRC", "SL", "SR", "LFE",
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"FLW", "FRW", "FLH",
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"FCH", "FCH", "FRH",
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"TC"
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};
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#define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
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static void print_channels(int channels, int *map)
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{
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int i;
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printf(" ");
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for (i = 0; i < channels; i++) {
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unsigned int c = *map++;
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if (c >= ARRAY_SIZE(chname))
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printf(" Ch%d", c);
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else
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printf(" %s", chname[c]);
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}
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printf("\n");
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}
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static int to_channel(const char *name)
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{
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unsigned int i;
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if (isdigit(*name))
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return atoi(name);
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for (i = 0; i < ARRAY_SIZE(chname); i++)
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if (!strcmp(chname[i], name))
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return i;
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return 0;
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}
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static const char *chmap_type(int type)
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{
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switch (type) {
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case SND_CHMAP_NONE:
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return "None";
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case SND_CHMAP_FIXED:
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return "Fixed";
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case SND_CHMAP_VAR:
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return "Variable";
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case SND_CHMAP_PAIRED:
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return "Paired";
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default:
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return "Unknown";
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}
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}
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static int query_chmaps(snd_pcm_t *pcm)
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{
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int **maps = snd_pcm_query_chmaps(pcm);
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int **p, *v;
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if (!maps) {
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printf("Cannot query maps\n");
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return 1;
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}
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for (p = maps; (v = *p) != NULL; p++) {
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printf("Type = %s, Channels = %d\n", chmap_type(v[0]), v[1]);
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print_channels(v[1], v + 2);
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}
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snd_pcm_free_chmaps(maps);
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return 0;
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}
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static int setup_pcm(snd_pcm_t *pcm, int format, int channels, int rate)
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{
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snd_pcm_hw_params_t *params;
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snd_pcm_hw_params_alloca(¶ms);
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if (snd_pcm_hw_params_any(pcm, params) < 0) {
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printf("Cannot init hw_params\n");
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return -1;
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}
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if (format != SND_PCM_FORMAT_UNKNOWN) {
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if (snd_pcm_hw_params_set_format(pcm, params, format) < 0) {
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printf("Cannot set format %s\n",
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snd_pcm_format_name(format));
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return -1;
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}
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}
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if (channels > 0) {
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if (snd_pcm_hw_params_set_channels(pcm, params, channels) < 0) {
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printf("Cannot set channels %d\n", channels);
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return -1;
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}
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}
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if (rate > 0) {
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if (snd_pcm_hw_params_set_rate_near(pcm, params, (unsigned int *)&rate, 0) < 0) {
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printf("Cannot set rate %d\n", rate);
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return -1;
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}
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}
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if (snd_pcm_hw_params(pcm, params) < 0) {
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printf("Cannot set hw_params\n");
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return -1;
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}
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return 0;
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}
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static int get_chmap(snd_pcm_t *pcm, int format, int channels, int rate)
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{
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int *map;
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if (setup_pcm(pcm, format, channels, rate))
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return 1;
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map = snd_pcm_get_chmap(pcm);
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if (!map) {
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printf("Cannot get chmap\n");
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return 1;
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}
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printf("Channels = %d\n", *map);
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print_channels(*map, map + 1);
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free(map);
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return 0;
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}
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static int set_chmap(snd_pcm_t *pcm, int format, int channels, int rate,
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int nargs, char **arg)
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{
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int i;
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int *map;
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if (channels && channels != nargs) {
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printf("Inconsistent channels %d vs %d\n", channels, nargs);
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return 1;
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}
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if (!channels) {
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if (!nargs) {
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printf("No channels are given\n");
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return 1;
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}
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channels = nargs;
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}
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if (setup_pcm(pcm, format, channels, rate))
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return 1;
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map = malloc(sizeof(int) * channels + 1);
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if (!map) {
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printf("cannot malloc\n");
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return 1;
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}
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*map = channels;
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for (i = 0; i < channels; i++)
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map[i + 1] = to_channel(arg[i]);
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if (snd_pcm_set_chmap(pcm, map) < 0) {
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printf("Cannot set chmap\n");
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return 1;
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}
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free(map);
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map = snd_pcm_get_chmap(pcm);
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if (!map) {
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printf("Cannot get chmap\n");
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return 1;
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}
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printf("Get channels = %d\n", *map);
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print_channels(*map, map + 1);
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free(map);
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return 0;
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}
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int main(int argc, char **argv)
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{
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char *device = NULL;
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int stream = SND_PCM_STREAM_PLAYBACK;
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int format = SND_PCM_FORMAT_UNKNOWN;
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int channels = 0;
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int rate = 0;
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snd_pcm_t *pcm;
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int c;
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while ((c = getopt(argc, argv, "D:s:f:c:r:")) != -1) {
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switch (c) {
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case 'D':
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device = optarg;
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break;
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case 's':
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if (*optarg == 'c' || *optarg == 'C')
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stream = SND_PCM_STREAM_CAPTURE;
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else
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stream = SND_PCM_STREAM_PLAYBACK;
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break;
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case 'f':
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format = snd_pcm_format_value(optarg);
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break;
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case 'c':
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channels = atoi(optarg);
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break;
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case 'r':
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rate = atoi(optarg);
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break;
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default:
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usage();
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return 1;
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}
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}
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if (argc <= optind) {
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usage();
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return 1;
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}
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if (!device) {
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printf("No device is specified\n");
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return 1;
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}
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if (snd_pcm_open(&pcm, device, stream, SND_PCM_NONBLOCK) < 0) {
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printf("Cannot open PCM stream %s for %s\n", device,
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snd_pcm_stream_name(stream));
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return 1;
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}
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switch (*argv[optind]) {
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case 'q':
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return query_chmaps(pcm);
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case 'g':
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return get_chmap(pcm, format, channels, rate);
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case 's':
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return set_chmap(pcm, format, channels, rate,
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argc - optind - 1, argv + optind + 1);
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}
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usage();
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return 1;
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}
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