From 633ab812c30fa2353800ad6431f41f25993ec6bd Mon Sep 17 00:00:00 2001
From: zhangmeng <775834166@qq.com>
Date: 星期一, 13 五月 2019 12:43:07 +0800
Subject: [PATCH] add scale
---
goffmpeg.go | 36 ++++++++++++++++++++++++++++++++++++
1 files changed, 36 insertions(+), 0 deletions(-)
diff --git a/goffmpeg.go b/goffmpeg.go
index d7676d2..0a2e4ee 100644
--- a/goffmpeg.go
+++ b/goffmpeg.go
@@ -12,6 +12,31 @@
"unsafe"
)
+const (
+ // ScaleFastBilinear SWS_FAST_BILINEAR
+ ScaleFastBilinear = 1
+ // ScaleBilinear SWS_BILINEAR
+ ScaleBilinear = 2
+ // ScaleBicubic SWS_BICUBIC
+ ScaleBicubic = 4
+ // ScaleX SWS_X
+ ScaleX = 8
+ // ScalePoint SWS_POINT
+ ScalePoint = 0x10
+ // ScaleArea SWS_AREA
+ ScaleArea = 0x20
+ // ScaleBicublin SWS_BICUBLIN
+ ScaleBicublin = 0x40
+ // ScaleGauss SWS_GAUSS
+ ScaleGauss = 0x80
+ // ScaleSinc SWS_SINC
+ ScaleSinc = 0x100
+ // ScaleLancZos SWS_LANCZOS
+ ScaleLancZos = 0x200
+ // ScaleSpline SWS_SPLINE
+ ScaleSpline = 0x400
+)
+
var libcffmpeg C.libcffmpeg
// InitFFmpeg init ffmepg
@@ -46,6 +71,17 @@
}
}
+// NewWithScale scale out pic
+func NewWithScale(w, h int, flag int) *GoFFMPEG {
+ f := C.wrap_fn_create()
+ if f != nil {
+ C.wrap_fn_scale(f, C.int(w), C.int(h), C.int(flag))
+ }
+ return &GoFFMPEG{
+ ffmpeg: f,
+ }
+}
+
// Free free handle
func (h *GoFFMPEG) Free() {
C.wrap_fn_destroy(h.ffmpeg)
--
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