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tentative ios fix background audio pause/resume

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This commit is contained in:
Stefano D'Angelo 2024-04-11 10:44:27 +02:00
parent ff8a589019
commit a2ffd4611b
3 changed files with 34 additions and 4 deletions
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2
templates/ios/src/app-Bridging-Header.h
View File

@ -20,5 +20,7 @@
char audioStart();
void audioStop();
void audioPause();
void audioResume();
void setParameter(int i, float v);
float getParameter(int i);

6
templates/ios/src/app.swift
View File

@ -97,6 +97,12 @@ struct templateApp: App {
var body: some Scene {
WindowGroup {
ContentView()
.onReceive(NotificationCenter.default.publisher(for: UIApplication.didEnterBackgroundNotification)) { _ in
audioPause()
}
.onReceive(NotificationCenter.default.publisher(for: UIApplication.willEnterForegroundNotification)) { _ in
audioResume()
}
}
}
}

30
templates/ios/src/native.mm
View File

@ -36,6 +36,8 @@
#define BLOCK_SIZE 32
static ma_device device;
static ma_device_config deviceConfig;
char device_inited = 0;
static plugin instance;
static void * mem;
#if NUM_NON_OPT_CHANNELS_IN > NUM_CHANNELS_IN
@ -189,14 +191,14 @@ extern "C"
char audioStart() {
#if NUM_CHANNELS_IN + NUM_CHANNELS_OUT > 0
# if NUM_CHANNELS_IN == 0
ma_device_config deviceConfig = ma_device_config_init(ma_device_type_playback);
deviceConfig = ma_device_config_init(ma_device_type_playback);
# elif NUM_CHANNELS_OUT == 0
ma_device_config deviceConfig = ma_device_config_init(ma_device_type_capture);
deviceConfig = ma_device_config_init(ma_device_type_capture);
# else
ma_device_config deviceConfig = ma_device_config_init(ma_device_type_duplex);
deviceConfig = ma_device_config_init(ma_device_type_duplex);
# endif
#else
ma_device_config deviceConfig = ma_device_config_init(ma_device_type_playback);
deviceConfig = ma_device_config_init(ma_device_type_playback);
#endif
deviceConfig.periodSizeInFrames = BLOCK_SIZE;
@ -328,6 +330,9 @@ char audioStart() {
ma_device_uninit(&device);
return false;
}
device_inited = 1;
return true;
}
@ -341,6 +346,23 @@ void audioStop() {
// No need to close MIDI connections (e.g. via MIDIClientDispose), the system terminates them when the app terminates.
}
extern "C"
void audioPause() {
if (device_inited) {
ma_device_stop(&device);
ma_device_uninit(&device);
}
}
extern "C"
void audioResume() {
// TODO: couldn't this could fail?...
if (device_inited) {
ma_device_init(NULL, &deviceConfig, &device);
ma_device_start(&device);
}
}
extern "C"
float getParameter(int i) {
#if PARAMETERS_N > 0