structv4l2_pix_formatpix; /* V4L2_BUF_TYPE_VIDEO_CAPTURE */ struct v4l2_pix_format_mplane pix_mp; /* V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE */ struct v4l2_window win; /* V4L2_BUF_TYPE_VIDEO_OVERLAY */ struct v4l2_vbi_format vbi; /* V4L2_BUF_TYPE_VBI_CAPTURE */ struct v4l2_sliced_vbi...
struct v4l2_format是v4l2中一个很重要的结构体,用于视频格式设置,定义如下: structv4l2_format{ __u32type; union {structv4l2_pix_formatpix;/* V4L2_BUF_TYPE_VIDEO_CAPTURE */structv4l2_pix_format_mplanepix_mp;/* V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE */structv4l2_windowwin;/* V4L2_BUF_TYPE_VIDEO_...
structv4l2_format{__u32type;union{structv4l2_pix_formatpix;/* V4L2_BUF_TYPE_VIDEO_CAPTURE */structv4l2_pix_format_mplanepix_mp;/* V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE */structv4l2_windowwin;/* V4L2_BUF_TYPE_VIDEO_OVERLAY */structv4l2_vbi_formatvbi;/* V4L2_BUF_TYPE_VBI_CAPTURE */structv4...
struct v4l2_format { __u32 type; // 数据流类型,由enum v4l2_buf_type定义 union { struct v4l2_pix_format pix; /* V4L2_BUF_TYPE_VIDEO_CAPTURE */ struct v4l2_pix_format_mplane pix_mp; /* V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE */ struct v4l2_window win; /* V4L2_BUF_TYPE_VIDEO_OVERLAY ...
Video type, format and size(struct v4l2_format * fmt) struct v4l2_format { enum v4l2_buf_type type; union { struct v4l2_pix_format pix; struct v4l2_pix_format_mplane pix_mp; struct v4l2_window win; struct v4l2_vbi_format vbi; struct v4l2_sliced_vbi_format sliced; __u8 raw_data[200...
Video type, format and size(struct v4l2_format * fmt) struct v4l2_format { enum v4l2_buf_type type; union { struct v4l2_pix_format pix; struct v4l2_pix_format_mplane pix_mp; struct v4l2_window win; struct v4l2_vbi_format vbi; struct v4l2_sliced_vbi_format sliced; __u8 raw_data[200...
设置图像格式需要用到struct v4l2_format结构体,该结构体描述每帧图像的具体格式,包括帧类型以及图像的长、宽等信息。 structv4l2_format{ __u32type;//镇类型, 应用程序设置union{structv4l2_pix_formatpix;// 视频设备使用structv4l2_pix_format_mplanepix_mp;/* V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE */struct...
1.3.3 struct v4l2_format数据流格式 structv4l2_format{__u32 type;/*数据流的格式类型: enum v4l2_buf_type*/union{structv4l2_pix_formatpix;/* V4L2_BUF_TYPE_VIDEO_CAPTURE 视频捕获设备使用*/structv4l2_pix_format_mplanepix_mp;/* V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE */structv4l2_windowwin;/* V4...
函数xvip_dma_init()先初始化struct xvip_dma的数据成员,包括dma->lock、dma->pipe.lock、dma->queued_bufs、dma->queued_lock;再根据buffer类型,初始化v4l2_format里的像数点格式,struct v4l2_pix_format pix 或者struct v4l2_pix_format_mplane pix_mp。接下来设置pad.flags为MEDIA_PAD_FL_SINK或者MEDIA_PAD...
函数xvip_dma_init()先初始化struct xvip_dma的数据成员,包括dma->lock、dma->pipe.lock、dma->queued_bufs、dma->queued_lock;再根据buffer类型,初始化v4l2_format里的像数点格式,struct v4l2_pix_format pix 或者struct v4l2_pix_format_mplane pix_mp。接下来设置pad.flags为MEDIA_PAD_FL_SINK或者MEDIA_PAD...