结构体 AVDRMFrameDescriptor 

#[repr(C)]
pub struct AVDRMFrameDescriptor {
    pub nb_objects: c_int,
    pub objects: [AVDRMObjectDescriptor; 4],
    pub nb_layers: c_int,
    pub layers: [AVDRMLayerDescriptor; 4],
}

DRM frame descriptor.

This is used as the data pointer for AV_PIX_FMT_DRM_PRIME frames. It is also used by user-allocated frame pools - allocating in AVHWFramesContext.pool must return AVBufferRefs which contain an object of this type.

The fields of this structure should be set such it can be imported directly by EGL using the EGL_EXT_image_dma_buf_import and EGL_EXT_image_dma_buf_import_modifiers extensions. (Note that the exact layout of a particular format may vary between platforms - we only specify that the same platform should be able to import it.)

The total number of planes must not exceed AV_DRM_MAX_PLANES, and the order of the planes by increasing layer index followed by increasing plane index must be the same as the order which would be used for the data pointers in the equivalent software format.

Fields

nb_objects: c_int

Number of DRM objects making up this frame.

objects: [AVDRMObjectDescriptor; 4]

Array of objects making up the frame.

nb_layers: c_int

Number of layers in the frame.

layers: [AVDRMLayerDescriptor; 4]

Array of layers in the frame.

trait 实现

impl Clone for AVDRMFrameDescriptor

fn clone(&self) -> AVDRMFrameDescriptor

Returns a duplicate of the value. 阅读更多

fn clone_from(&mut self, source: &Self)

从 source 执行拷贝赋值。 阅读更多

impl Debug for AVDRMFrameDescriptor

fn fmt(&self, f: &mut Formatter<'_>) -> Result

使用给定的格式化器格式化该值。 阅读更多

impl PartialEq for AVDRMFrameDescriptor

fn eq(&self, other: &AVDRMFrameDescriptor) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

测试 !=。默认实现几乎总是足够的，没有充分理由不应被重写。

impl Copy for AVDRMFrameDescriptor

impl Eq for AVDRMFrameDescriptor

impl StructuralPartialEq for AVDRMFrameDescriptor