定义一个自己的writer继承GPUImageMovieWriter
#import@interface YQSImageMovieWriter : GPUImageMovieWriter
-(void)pause;
-(void)continueWrite;
-(void)configure;//每次暂停或者播放之前都要调用
@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
注释一下 configure在录制,暂停,之前调用即可
