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only run system() command when vol has changed (#1148)

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* only run system command when vol has changed

* fix indent
old-commit-hash: 431155029399e904258d6e7b525ebec037ae608c
This commit is contained in:
eFini
2020-03-31 07:41:17 +10:00
committed by GitHub
parent 3f5d11ff3b
commit 02ad0e743e
1 changed files with 10 additions and 5 deletions
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selfdrive/ui/sound.cc
+10 -5
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@@ -13,12 +13,17 @@ extern "C"{
#include "slplay.h"
}
void set_volume(int volume) {
char volume_change_cmd[64];
sprintf(volume_change_cmd, "service call audio 3 i32 3 i32 %d i32 1 &", volume);
int last_volume = 0;
// 5 second timeout at 60fps
int volume_changed = system(volume_change_cmd);
void set_volume(int volume) {
if (last_volume != volume) {
char volume_change_cmd[64];
sprintf(volume_change_cmd, "service call audio 3 i32 3 i32 %d i32 1 &", volume);
// 5 second timeout at 60fps
int volume_changed = system(volume_change_cmd);
last_volume = volume;
}
}