mirror of
https://github.com/asticode/go-astiav.git
synced 2025-10-07 09:01:07 +08:00
63 lines
1.5 KiB
Go
63 lines
1.5 KiB
Go
package astiav
|
|
|
|
//#cgo pkg-config: libavfilter libavutil
|
|
//#include <libavfilter/avfilter.h>
|
|
//#include <libavfilter/buffersink.h>
|
|
//#include <libavfilter/buffersrc.h>
|
|
//#include <libavutil/frame.h>
|
|
import "C"
|
|
import "unsafe"
|
|
|
|
// https://github.com/FFmpeg/FFmpeg/blob/n5.0/libavfilter/avfilter.h#L67
|
|
type FilterContext struct {
|
|
c *C.struct_AVFilterContext
|
|
}
|
|
|
|
func newFilterContext() *FilterContext {
|
|
return &FilterContext{}
|
|
}
|
|
|
|
func (fc *FilterContext) Free() {
|
|
C.avfilter_free(fc.c)
|
|
}
|
|
|
|
func (fc *FilterContext) BuffersrcAddFrame(f *Frame, fs BuffersrcFlags) error {
|
|
var cf *C.struct_AVFrame
|
|
if f != nil {
|
|
cf = f.c
|
|
}
|
|
return newError(C.av_buffersrc_add_frame_flags(fc.c, cf, C.int(fs)))
|
|
}
|
|
|
|
func (fc *FilterContext) BuffersinkGetFrame(f *Frame, fs BuffersinkFlags) error {
|
|
var cf *C.struct_AVFrame
|
|
if f != nil {
|
|
cf = f.c
|
|
}
|
|
return newError(C.av_buffersink_get_frame_flags(fc.c, cf, C.int(fs)))
|
|
}
|
|
|
|
func (fc *FilterContext) NbInputs() int {
|
|
return int(fc.c.nb_inputs)
|
|
}
|
|
|
|
func (fc *FilterContext) NbOutputs() int {
|
|
return int(fc.c.nb_outputs)
|
|
}
|
|
|
|
func (fc *FilterContext) Inputs() (ls []*FilterLink) {
|
|
lcs := (*[maxArraySize](*C.struct_AVFilterLink))(unsafe.Pointer(fc.c.inputs))
|
|
for i := 0; i < fc.NbInputs(); i++ {
|
|
ls = append(ls, newFilterLinkFromC(lcs[i]))
|
|
}
|
|
return
|
|
}
|
|
|
|
func (fc *FilterContext) Outputs() (ls []*FilterLink) {
|
|
lcs := (*[maxArraySize](*C.struct_AVFilterLink))(unsafe.Pointer(fc.c.outputs))
|
|
for i := 0; i < fc.NbOutputs(); i++ {
|
|
ls = append(ls, newFilterLinkFromC(lcs[i]))
|
|
}
|
|
return
|
|
}
|