结构体 AVFilterParams 

#[repr(C)]
pub struct AVFilterParams {
    pub filter: *mut AVFilterContext,
    pub filter_name: *mut c_char,
    pub instance_name: *mut c_char,
    pub opts: *mut AVDictionary,
    pub inputs: *mut *mut AVFilterPadParams,
    pub nb_inputs: c_uint,
    pub outputs: *mut *mut AVFilterPadParams,
    pub nb_outputs: c_uint,
}

Parameters describing a filter to be created in a filtergraph.

Created as a child of AVFilterGraphSegment by avfilter_graph_segment_parse(). Freed in avfilter_graph_segment_free().

Fields

filter: *mut AVFilterContext

The filter context.

Created by avfilter_graph_segment_create_filters() based on AVFilterParams.filter_name and instance_name.

Callers may also create the filter context manually, then they should av_free() filter_name and set it to NULL. Such AVFilterParams instances are then skipped by avfilter_graph_segment_create_filters().

filter_name: *mut c_char

Name of the AVFilter to be used.

An av_malloc()’ed string, set by avfilter_graph_segment_parse(). Will be passed to avfilter_get_by_name() by avfilter_graph_segment_create_filters().

Callers may av_free() this string and replace it with another one or NULL. If the caller creates the filter instance manually, this string MUST be set to NULL.

When both AVFilterParams.filter an AVFilterParams.filter_name are NULL, this AVFilterParams instance is skipped by avfilter_graph_segment_*() functions.

instance_name: *mut c_char

Name to be used for this filter instance.

An av_malloc()’ed string, may be set by avfilter_graph_segment_parse() or left NULL. The caller may av_free() this string and replace with another one or NULL.

Will be used by avfilter_graph_segment_create_filters() - passed as the third argument to avfilter_graph_alloc_filter(), then freed and set to NULL.

opts: *mut AVDictionary

Options to be applied to the filter.

Filled by avfilter_graph_segment_parse(). Afterwards may be freely modified by the caller.

Will be applied to the filter by avfilter_graph_segment_apply_opts() with an equivalent of av_opt_set_dict2(filter, &opts, AV_OPT_SEARCH_CHILDREN), i.e. any unapplied options will be left in this dictionary.

inputs: *mut *mut AVFilterPadParams

nb_inputs: c_uint

outputs: *mut *mut AVFilterPadParams

nb_outputs: c_uint

trait 实现

impl Clone for AVFilterParams

fn clone(&self) -> AVFilterParams

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 AVFilterParams

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 AVFilterParams

fn eq(&self, other: &AVFilterParams) -> 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 AVFilterParams

impl Eq for AVFilterParams

impl StructuralPartialEq for AVFilterParams