From dc65b072a13994ff02cc7b54f3b00ba087e7f86a Mon Sep 17 00:00:00 2001
From: zhangmeng <775834166@qq.com>
Date: 星期三, 20 十一月 2019 14:05:52 +0800
Subject: [PATCH] add zerocopy
---
godecjpeg.go | 27 +++++++++++++++++++++++++++
1 files changed, 27 insertions(+), 0 deletions(-)
diff --git a/godecjpeg.go b/godecjpeg.go
index 6cef6af..ac1151f 100644
--- a/godecjpeg.go
+++ b/godecjpeg.go
@@ -34,3 +34,30 @@
}
return nil, int(width), int(height)
}
+
+// Decode2 decode jpeg file
+// return val: -1 open error; -2, find stream error; -3, converter create error
+func Decode2(input string, gb bool) (unsafe.Pointer, []byte, int, int) {
+ in := C.CString(input)
+ defer C.free(unsafe.Pointer(in))
+
+ withGB := 0
+ if gb {
+ withGB = 1
+ }
+
+ var width C.int
+ var height C.int
+ p := C.wrap_fn_decode(unsafe.Pointer(libcffmpeg), in, C.int(withGB), &width, &height)
+
+ if width > 0 && height > 0 {
+ wid := int(width)
+ hei := int(height)
+ const maxLen = 0x7fffffff
+ size := int(width * height * 3)
+ data := (*[maxLen]byte)(unsafe.Pointer(p))[:size:size]
+
+ return p, data, wid, hei
+ }
+ return nil, nil, 0, 0
+}
--
Gitblit v1.8.0