定義一個(gè)自己的writer繼承GPUImageMovieWriter
#import@interface YQSImageMovieWriter : GPUImageMovieWriter
-(void)pause;
-(void)continueWrite;
-(void)configure;//每次暫停或者播放之前都要調(diào)用
@end
//
//? YQSImageMovieWriter.m
//? YQSImageViewController
//
//? Created by lenkeng on 17/01/2018.
//? Copyright ? 2018 lenkeng. All rights reserved.
//
#import "YQSImageMovieWriter.h"
@interface YQSImageMovieWriter(){
? ? BOOL _isPause;
//? ? BOOL _isAudioOn;
? ? CMTime _offset;
? ? CMTime _timeOffset;
? ? CMTime _last;
? ? BOOL _isDisCount;
}
@end
@implementation YQSImageMovieWriter
//BOOL _isDisCount = YES;
//CMTime _offset = kCMTimeZero;
//CMTime _timeOffset = CMTimeMake(0, 1);
//CMTime _isDisCount = YES;
-(void)newFrameReadyAtTime:(CMTime)frameTime atIndex:(NSInteger)textureIndex{
? ? if (_isPause) {
? ? ? ? return;
? ? }
? ? if (_isDisCount) {
? ? ? ? _isDisCount = NO;
? ? ? ? _offset = CMTimeSubtract(frameTime, _last);
? ? ? ? if (_offset.value > 0) {
? ? ? ? ? ? _timeOffset = CMTimeAdd(_timeOffset, _offset);
? ? ? ? }
? ? }
? ? _last = frameTime;
? ? frameTime = CMTimeSubtract(frameTime, _timeOffset);
//? ? NSLog(@"_timeOffset->%lf, ->%lf", _timeOffset.value, _timeOffset.timescale);
? ? [super newFrameReadyAtTime:frameTime atIndex:textureIndex];
}
-(void)pause{
? ? _isPause = YES;
}
-(void)continueWrite{
? ? _isPause = NO;
//? ? [self configure];
}
-(void)configure{
? ? _timeOffset = CMTimeMake(0, 1);
? ? _isDisCount = YES;
//? ? _isAudioOn = YES;
? ? _offset = kCMTimeZero;
}
-(void)processAudioBuffer:(CMSampleBufferRef)audioBuffer{
? ? if (_isPause) {
? ? ? ? return;
? ? }
? ?[super processAudioBuffer:audioBuffer];
}
@end
注釋一下 configure在錄制,暫停,之前調(diào)用即可
