ios16 单声道audiounit

Change-Id: I956697a9f0a4f006a3456c6ed89962a6b14cfc98

Author: tonychanchen

Source/LinkSDKDemo/Video/P2P/Controller/TIoTDemoPreviewDeviceVC.m

@@ -264,7 +264,7 @@ - (void)getDeviceStatusWithType:(NSString *)singleType qualityType:(NSString *)q
                 TIoTCoreAudioConfig *audio_config = [TIoTCoreAudioConfig new];
                 audio_config.refreshSession = NO;
                 audio_config.sampleRate = TIoTAVCaptionFLVAudio_16;
-                audio_config.channels = 2;
+                audio_config.channels = 1;
                 audio_config.isEchoCancel = NO;
                 audio_config.pitch =  tt_pitch; // -6声音会变粗一点;    6声音会变细一点
 

Source/LinkSDKDemo/Video/P2P/Controller/TIoTSessionManager.m

@@ -96,8 +96,12 @@ - (void)resumeRTCAudioSession {
         if (@available(iOS 10.0, *)) {
             categoryOptions |= AVAudioSessionCategoryOptionAllowBluetooth;
         }
-        [[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayAndRecord withOptions:categoryOptions error:nil];
-        [[AVAudioSession sharedInstance] setActive:YES error:nil];
+        AVAudioSession *session = [AVAudioSession sharedInstance];
+        [session setCategory:AVAudioSessionCategoryPlayAndRecord withOptions:categoryOptions error:nil];
+//        [session setPreferredSampleRate:16000 error:nil];
+//        [session setPreferredInputNumberOfChannels:1 error:nil];
+//        [session setPreferredIOBufferDuration:0.064 error:nil]; //16000*0.032*2=1024字节
+        [session setActive:YES error:nil];
     }
 }
 //功能结束时重置audioSession,重置到缓存的audioSession设置

Source/SDK/LinkVideo/FLV/TIoTAACEncoder.m

@@ -127,7 +127,7 @@ -(void)encodePCMData:(NSData *)pcmdata {
     ConverterContext *cxt = self->convertContext;
     if (cxt && cxt->converter) {
 
-        dispatch_async(encodeQueue, ^{
+//        dispatch_async(encodeQueue, ^{
 
             NSUInteger pcmLength = pcmdata.length;
             void *pcmData = pcmdata.bytes;
@@ -168,7 +168,7 @@ -(void)encodePCMData:(NSData *)pcmdata {
                 free(outputBuffer);
                 outputBuffer = NULL;
             }
-        });
+//        });
     }
 }