IJKPlayer获取实时数据（上）- 添加外部接口

2018-04-13

一、添加接口

1、在IJKMediaPlayBack.h添加三个方法

image.png

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- (CVPixelBufferRef)framePixelbuffer;
- (void)framePixelbufferLock;
- (void)framePixelbufferUnlock;

2、在ff_ffplay_def.h 的 FFPlayer 数据结构中添加如下:

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// 引入头文件
#include <CoreVideo/CoreVideo.h>
  
CVPixelBufferRef szt_pixelbuffer;
pthread_mutex_t szt_pixelbuffer_mutex;

3、在ijkplayer.h中添加：

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// 引入头文件
#include <CoreVideo/CoreVideo.h>

CVPixelBufferRef ijkmp_get_pixelbuffer(IjkMediaPlayer *mp);
int ijkmp_pixelbuffer_mutex_init(IjkMediaPlayer *mp);
int ijkmp_pixelbuffer_mutex_lock(IjkMediaPlayer *mp);
int ijkmp_pixelbuffer_mutex_unlock(IjkMediaPlayer *mp);

4、在ijkplayer.c添加:

CVPixelBufferRef ijkmp_get_pixelbuffer(IjkMediaPlayer *mp)
{
    return mp->ffplayer->szt_pixelbuffer;
}

int ijkmp_pixelbuffer_mutex_init(IjkMediaPlayer *mp)
{
    int ret = ffp_pixelbuffer_mutex_init(mp->ffplayer);
    return ret;
}

int ijkmp_pixelbuffer_mutex_lock(IjkMediaPlayer *mp)
{
    int ret = ffp_pixelbuffer_lock(mp->ffplayer);
    return ret;
}

int ijkmp_pixelbuffer_mutex_unlock(IjkMediaPlayer *mp)
{
    int ret = ffp_pixelbuffer_unlock(mp->ffplayer);
    return ret;
}

5、在ff_ffplay.h添加:

image.png

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int       ffp_pixelbuffer_mutex_init(FFPlayer *ffp);
int       ffp_pixelbuffer_lock(FFPlayer *ffp);
int       ffp_pixelbuffer_unlock(FFPlayer *ffp);

6、在ff_ffplay.c添加:

int ffp_pixelbuffer_mutex_init(FFPlayer *ffp)
{
    int ret = pthread_mutex_init(&ffp->szt_pixelbuffer_mutex, NULL);
    return ret;
}
            
int ffp_pixelbuffer_lock(FFPlayer *ffp)
{
    int ret = pthread_mutex_lock(&ffp->szt_pixelbuffer_mutex);
    return ret;
}
            
int ffp_pixelbuffer_unlock(FFPlayer *ffp)
{
    int ret = pthread_mutex_unlock(&ffp->szt_pixelbuffer_mutex);
    return ret;
}

7、在IJKFFMoviePlayerController.h添加:

image.png

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- (CVPixelBufferRef)framePixelbuffer;
- (void)framePixelbufferLock;
- (void)framePixelbufferUnlock;

8、在IJKFFMoviePlayerController.m添加:

- (CVPixelBufferRef)framePixelbuffer
{
    if (_mediaPlayer)
    {
        return ijkmp_get_pixelbuffer(_mediaPlayer);
    }
    
    return NULL;
}

- (void)framePixelbufferLock
{
    if (_mediaPlayer)
    {
        ijkmp_pixelbuffer_mutex_lock(_mediaPlayer);
    }
}

- (void)framePixelbufferUnlock
{
    if (_mediaPlayer)
    {
        ijkmp_pixelbuffer_mutex_unlock(_mediaPlayer);
    }
}

二、如何使用：

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[self.ijkplayer framePixelbufferLock];
CVPixelBufferRef pixelBuffer = [self.ijkplayer framePixelbuffer];
[self.ijkplayer framePixelbufferUnlock];

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