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Some systems include both "default:" and "hw:" for the same usb device

This commit is contained in:
Sam Lantinga 2016-10-07 11:18:55 -07:00
parent 8e1994614c
commit 3b0c79363d
1 changed files with 22 additions and 2 deletions
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24
src/audio/alsa/SDL_alsa_audio.c
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@ -771,7 +771,28 @@ ALSA_HotplugThread(void *arg)
ALSA_Device *seen = NULL;
ALSA_Device *prev;
int i;
const char *match = "default:";
size_t match_len = strlen(match);
/* determine what kind of name to match. Use "hw:" devices if they
exist, otherwise use "default:" */
for (i = 0; hints[i]; i++) {
char *name = ALSA_snd_device_name_get_hint(hints[i], "NAME");
if (!name) {
continue;
}
if (SDL_strncmp(name, "hw:", 3) == 0) {
match = "hw:";
match_len = strlen(match);
free(name);
break;
}
free(name);
}
/* look through the list of device names to find matches */
for (i = 0; hints[i]; i++) {
char *name = ALSA_snd_device_name_get_hint(hints[i], "NAME");
if (!name) {
@ -779,8 +800,7 @@ ALSA_HotplugThread(void *arg)
}
/* only want physical hardware interfaces */
if (SDL_strncmp(name, "hw:", 3) == 0 ||
SDL_strncmp(name, "default:", 8) == 0) {
if (SDL_strncmp(name, match, match_len) == 0) {
char *ioid = ALSA_snd_device_name_get_hint(hints[i], "IOID");
const SDL_bool isoutput = (ioid == NULL) || (SDL_strcmp(ioid, "Output") == 0);
const SDL_bool isinput = (ioid == NULL) || (SDL_strcmp(ioid, "Input") == 0);