package goffmpeg
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/*
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#include <stdlib.h>
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#include "libcffmpeg.h"
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*/
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import "C"
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import "unsafe"
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const (
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// ScaleNone self add no scale raw frame data
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ScaleNone = 0
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// ScaleFastBilinear SWS_FAST_BILINEAR
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ScaleFastBilinear = 1
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// ScaleBilinear SWS_BILINEAR
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ScaleBilinear = 2
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// ScaleBicubic SWS_BICUBIC
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ScaleBicubic = 4
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// ScaleX SWS_X
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ScaleX = 8
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// ScalePoint SWS_POINT
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ScalePoint = 0x10
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// ScaleArea SWS_AREA
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ScaleArea = 0x20
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// ScaleBicublin SWS_BICUBLIN
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ScaleBicublin = 0x40
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// ScaleGauss SWS_GAUSS
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ScaleGauss = 0x80
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// ScaleSinc SWS_SINC
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ScaleSinc = 0x100
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// ScaleLancZos SWS_LANCZOS
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ScaleLancZos = 0x200
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// ScaleSpline SWS_SPLINE
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ScaleSpline = 0x400
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)
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// SrcFormat format
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const srcFormat = 23
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// GoConv conv
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type GoConv struct {
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srcW int
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srcH int
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dstW int
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dstH int
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conv C.cconv
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}
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// NewConv new conv
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func NewConv(srcW, srcH, dstW, dstH, scaleFlag int) *GoConv {
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c := C.wrap_fn_create_conv(C.int(srcW), C.int(srcH), C.int(srcFormat), C.int(dstW), C.int(dstH), C.int(scaleFlag))
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if c == nil {
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return nil
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}
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return &GoConv{
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srcW,
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srcH,
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dstW,
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dstH,
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c,
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}
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}
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// Free free
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func (c *GoConv) Free() {
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if c.conv != nil {
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C.wrap_fn_destroy_conv(c.conv)
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}
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}
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// ConvToPicture conv to pic
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func (c *GoConv) ConvToPicture(src []byte) []byte {
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if c.conv == nil {
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return nil
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}
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cin := C.CBytes(src)
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defer C.free(cin)
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bgr := C.wrap_fn_conv(c.conv, (*C.uchar)(cin))
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defer C.free(unsafe.Pointer(bgr))
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if bgr != nil {
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return C.GoBytes(bgr, C.int(c.dstW*c.dstH*3))
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}
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return nil
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}
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/////////////// for conv
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// ConvGPU conv gpu resize
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func ConvGPU(in []byte, w, h, dstW, dstH int) []byte {
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return nil
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}
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