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Shared/KBVoiceRecordManager.m
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312
Shared/KBVoiceRecordManager.m
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//
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// KBVoiceRecordManager.m
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//
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#import "KBVoiceRecordManager.h"
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#import "KBConfig.h"
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#import "KBVoiceBridgeNotification.h"
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#import "KBHUD.h"
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#import <AVFoundation/AVFoundation.h>
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static void KBVoiceBridgeDarwinCallback(CFNotificationCenterRef center, void *observer, CFStringRef name, const void *object, CFDictionaryRef userInfo);
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@interface KBVoiceRecordManager () <AVAudioRecorderDelegate>
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@property (nonatomic, strong) AVAudioRecorder *recorder;
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@property (nonatomic, strong) NSURL *recordURL;
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@property (nonatomic, assign, readwrite, getter=isRecording) BOOL recording;
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@property (nonatomic, assign) BOOL pendingStart;
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@end
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@implementation KBVoiceRecordManager
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+ (instancetype)shared {
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static KBVoiceRecordManager *m; static dispatch_once_t onceToken; dispatch_once(&onceToken, ^{ m = [KBVoiceRecordManager new]; });
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return m;
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}
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- (instancetype)init {
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if (self = [super init]) {
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CFNotificationCenterAddObserver(CFNotificationCenterGetDarwinNotifyCenter(),
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(__bridge const void *)(self),
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KBVoiceBridgeDarwinCallback,
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(__bridge CFStringRef)KBDarwinVoiceStartRequest,
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NULL,
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CFNotificationSuspensionBehaviorDeliverImmediately);
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CFNotificationCenterAddObserver(CFNotificationCenterGetDarwinNotifyCenter(),
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(__bridge const void *)(self),
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KBVoiceBridgeDarwinCallback,
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(__bridge CFStringRef)KBDarwinVoiceStopRequest,
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NULL,
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CFNotificationSuspensionBehaviorDeliverImmediately);
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}
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return self;
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}
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- (void)dealloc {
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CFNotificationCenterRemoveObserver(CFNotificationCenterGetDarwinNotifyCenter(),
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(__bridge const void *)(self),
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(__bridge CFStringRef)KBDarwinVoiceStartRequest,
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NULL);
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CFNotificationCenterRemoveObserver(CFNotificationCenterGetDarwinNotifyCenter(),
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(__bridge const void *)(self),
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(__bridge CFStringRef)KBDarwinVoiceStopRequest,
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NULL);
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}
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static void KBVoiceBridgeDarwinCallback(CFNotificationCenterRef center, void *observer, CFStringRef name, const void *object, CFDictionaryRef userInfo) {
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KBVoiceRecordManager *self = (__bridge KBVoiceRecordManager *)observer;
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if (!self) { return; }
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NSString *n = (__bridge NSString *)name;
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NSLog(@"[KBVoiceBridge][App] Darwin received: %@", n);
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dispatch_async(dispatch_get_main_queue(), ^{
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if ([n isEqualToString:KBDarwinVoiceStartRequest]) {
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[self startRecording];
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} else if ([n isEqualToString:KBDarwinVoiceStopRequest]) {
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[self stopRecording];
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}
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});
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}
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#pragma mark - Public
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- (void)startRecording {
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if (self.isRecording) {
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NSLog(@"[KBVoiceBridge][App] startRecording already recording, stop then restart");
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[self stopRecording];
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// return;
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}
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NSLog(@"[KBVoiceBridge][App] startRecording begin");
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[self kb_clearSharedState];
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AVAudioSession *session = [AVAudioSession sharedInstance];
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AVAudioSessionRecordPermission permission = session.recordPermission;
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if (permission == AVAudioSessionRecordPermissionDenied) {
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NSLog(@"[KBVoiceBridge][App] recordPermission denied");
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[self kb_postFailed:KBLocalized(@"麦克风权限未开启")];
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return;
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}
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if (permission == AVAudioSessionRecordPermissionUndetermined) {
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NSLog(@"[KBVoiceBridge][App] recordPermission undetermined, requesting");
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self.pendingStart = YES;
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__weak typeof(self) weakSelf = self;
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[session requestRecordPermission:^(BOOL granted) {
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dispatch_async(dispatch_get_main_queue(), ^{
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__strong typeof(weakSelf) self = weakSelf;
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if (!self) { return; }
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if (!self.pendingStart) { return; }
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self.pendingStart = NO;
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if (!granted) {
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NSLog(@"[KBVoiceBridge][App] recordPermission request denied");
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[self kb_postFailed:KBLocalized(@"麦克风权限未开启")];
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return;
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}
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NSLog(@"[KBVoiceBridge][App] recordPermission request granted");
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[self startRecording];
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});
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}];
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return;
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}
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NSError *error = nil;
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if (@available(iOS 10.0, *)) {
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[session setCategory:AVAudioSessionCategoryPlayAndRecord
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mode:AVAudioSessionModeDefault
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options:AVAudioSessionCategoryOptionDefaultToSpeaker | AVAudioSessionCategoryOptionAllowBluetooth
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error:&error];
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} else {
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[session setCategory:AVAudioSessionCategoryPlayAndRecord error:&error];
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}
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if (error) {
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NSLog(@"[KBVoiceBridge][App] setCategory error: %@", error.localizedDescription);
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[self kb_postFailed:KBLocalized(@"麦克风初始化失败")];
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return;
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}
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[session setActive:YES error:&error];
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if (error) {
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NSLog(@"[KBVoiceBridge][App] setActive error: %@", error.localizedDescription);
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[self kb_postFailed:error.localizedDescription ?: KBLocalized(@"麦克风启动失败")];
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return;
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}
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if (!session.isInputAvailable) {
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NSLog(@"[KBVoiceBridge][App] input not available");
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[self kb_postFailed:KBLocalized(@"麦克风不可用")];
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return;
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}
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NSURL *aacURL = [self kb_voiceFileURLWithExtension:@"m4a"];
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if (!aacURL) {
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NSLog(@"[KBVoiceBridge][App] app group not configured");
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[self kb_postFailed:KBLocalized(@"App Group 未配置，无法共享录音")];
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return;
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}
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NSDictionary *aacSettings = [self kb_voiceRecordSettingsAAC];
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if ([self kb_tryStartRecorderWithSettings:aacSettings fileURL:aacURL error:&error]) {
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NSLog(@"[KBVoiceBridge][App] recorder started (aac) url=%@", aacURL);
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self.recordURL = aacURL;
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self.recording = YES;
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return;
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}
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NSURL *pcmURL = [self kb_voiceFileURLWithExtension:@"caf"];
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if (!pcmURL) {
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NSLog(@"[KBVoiceBridge][App] app group not configured");
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[self kb_postFailed:KBLocalized(@"App Group 未配置，无法共享录音")];
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return;
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}
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NSDictionary *pcmSettings = [self kb_voiceRecordSettingsPCM];
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error = nil;
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if ([self kb_tryStartRecorderWithSettings:pcmSettings fileURL:pcmURL error:&error]) {
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NSLog(@"[KBVoiceBridge][App] recorder started (pcm) url=%@", pcmURL);
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self.recordURL = pcmURL;
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self.recording = YES;
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return;
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}
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NSLog(@"[KBVoiceBridge][App] recorder start failed: %@", error.localizedDescription);
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NSString *tip = error.localizedDescription ?: KBLocalized(@"录音启动失败，可能是系统限制或宿主 App 不允许录音");
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[self kb_postFailed:tip];
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}
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- (void)stopRecording {
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self.pendingStart = NO;
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NSLog(@"[KBVoiceBridge][App] stopRecording");
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if (self.recorder.isRecording) {
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[self.recorder stop];
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}
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}
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#pragma mark - AVAudioRecorderDelegate
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- (void)audioRecorderDidFinishRecording:(AVAudioRecorder *)recorder successfully:(BOOL)flag {
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[[AVAudioSession sharedInstance] setActive:NO error:nil];
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NSLog(@"[KBVoiceBridge][App] finishRecording flag=%d url=%@", flag, recorder.url);
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NSURL *fileURL = recorder.url ?: self.recordURL;
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self.recorder = nil;
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self.recordURL = nil;
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self.recording = NO;
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if (!flag || !fileURL) {
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[self kb_postFailed:KBLocalized(@"录音失败")];
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return;
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}
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[self kb_saveSharedFileURL:fileURL];
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[self kb_postDarwin:KBDarwinVoiceReady];
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}
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- (void)audioRecorderEncodeErrorDidOccur:(AVAudioRecorder *)recorder error:(NSError *)error {
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[[AVAudioSession sharedInstance] setActive:NO error:nil];
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NSLog(@"[KBVoiceBridge][App] encodeError: %@", error.localizedDescription);
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self.recorder = nil;
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self.recordURL = nil;
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self.recording = NO;
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[self kb_postFailed:error.localizedDescription ?: KBLocalized(@"录音失败")];
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}
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#pragma mark - Helpers
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- (NSDictionary *)kb_voiceRecordSettingsAAC {
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return @{AVFormatIDKey: @(kAudioFormatMPEG4AAC),
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AVSampleRateKey: @(16000),
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AVNumberOfChannelsKey: @(1),
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AVEncoderAudioQualityKey: @(AVAudioQualityMedium)};
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}
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- (NSDictionary *)kb_voiceRecordSettingsPCM {
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return @{AVFormatIDKey: @(kAudioFormatLinearPCM),
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AVSampleRateKey: @(16000),
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AVNumberOfChannelsKey: @(1),
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AVLinearPCMBitDepthKey: @(16),
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AVLinearPCMIsFloatKey: @(NO),
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AVLinearPCMIsBigEndianKey: @(NO)};
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}
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- (NSURL *)kb_voiceFileURLWithExtension:(NSString *)ext {
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NSURL *dirURL = [self kb_voiceDirectoryURL];
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if (!dirURL) {
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return nil;
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}
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NSTimeInterval ts = [[NSDate date] timeIntervalSince1970] * 1000;
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NSString *safeExt = (ext.length > 0) ? ext : @"m4a";
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NSString *fileName = [NSString stringWithFormat:@"kb_voice_%lld.%@", (long long)ts, safeExt];
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return [dirURL URLByAppendingPathComponent:fileName];
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}
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- (NSURL *)kb_voiceDirectoryURL {
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NSURL *containerURL = [[NSFileManager defaultManager] containerURLForSecurityApplicationGroupIdentifier:AppGroup];
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if (!containerURL) {
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return nil;
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}
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NSURL *dirURL = [containerURL URLByAppendingPathComponent:@"voice" isDirectory:YES];
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if (dirURL && ![[NSFileManager defaultManager] fileExistsAtPath:dirURL.path]) {
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[[NSFileManager defaultManager] createDirectoryAtURL:dirURL withIntermediateDirectories:YES attributes:nil error:nil];
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}
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return dirURL;
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}
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- (BOOL)kb_tryStartRecorderWithSettings:(NSDictionary *)settings fileURL:(NSURL *)fileURL error:(NSError **)error {
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AVAudioRecorder *recorder = [[AVAudioRecorder alloc] initWithURL:fileURL settings:settings error:error];
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if (*error || !recorder) {
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NSLog(@"[KBVoiceBridge][App] create recorder failed: %@", (*error).localizedDescription);
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return NO;
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}
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recorder.delegate = self;
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recorder.meteringEnabled = YES;
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if (![recorder prepareToRecord]) {
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NSLog(@"[KBVoiceBridge][App] prepareToRecord failed");
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return NO;
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}
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if (![recorder record]) {
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NSLog(@"[KBVoiceBridge][App] record returned NO");
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return NO;
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}
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self.recorder = recorder;
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return YES;
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}
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- (NSUserDefaults *)kb_voiceUserDefaults {
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return [[NSUserDefaults alloc] initWithSuiteName:AppGroup];
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}
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- (void)kb_clearSharedState {
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NSUserDefaults *ud = [self kb_voiceUserDefaults];
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[ud removeObjectForKey:KBVoiceBridgeFilePathKey];
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[ud removeObjectForKey:KBVoiceBridgeErrorKey];
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[ud removeObjectForKey:KBVoiceBridgeTimestampKey];
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[ud synchronize];
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}
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- (void)kb_saveSharedFileURL:(NSURL *)fileURL {
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if (!fileURL) { return; }
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NSUserDefaults *ud = [self kb_voiceUserDefaults];
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[ud setObject:fileURL.path ?: @"" forKey:KBVoiceBridgeFilePathKey];
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[ud setObject:@([[NSDate date] timeIntervalSince1970]) forKey:KBVoiceBridgeTimestampKey];
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[ud removeObjectForKey:KBVoiceBridgeErrorKey];
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[ud synchronize];
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}
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- (void)kb_saveSharedError:(NSString *)message {
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NSUserDefaults *ud = [self kb_voiceUserDefaults];
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[ud setObject:message ?: @"" forKey:KBVoiceBridgeErrorKey];
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[ud setObject:@([[NSDate date] timeIntervalSince1970]) forKey:KBVoiceBridgeTimestampKey];
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[ud removeObjectForKey:KBVoiceBridgeFilePathKey];
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[ud synchronize];
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}
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- (void)kb_postFailed:(NSString *)message {
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[self kb_saveSharedError:message];
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[self kb_postDarwin:KBDarwinVoiceFailed];
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if ([UIApplication sharedApplication].applicationState == UIApplicationStateActive) {
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NSString *tip = message.length > 0 ? message : KBLocalized(@"录音失败");
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[KBHUD showInfo:tip];
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}
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}
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- (void)kb_postDarwin:(NSString *)name {
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CFNotificationCenterPostNotification(CFNotificationCenterGetDarwinNotifyCenter(),
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(__bridge CFStringRef)name,
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NULL, NULL, true);
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}
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@end
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