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
---
godec.go | 19 ++++++++++++++++++-
1 files changed, 18 insertions(+), 1 deletions(-)
diff --git a/godec.go b/godec.go
index aab8c7a..25baa88 100644
--- a/godec.go
+++ b/godec.go
@@ -19,10 +19,27 @@
var srcW, srcH, srcF C.int
p := C.wrap_fn_decoder_pic(unsafe.Pointer(libcffmpeg), h.ffmpeg, &srcW, &srcH, &srcF, &length, &fid)
- if srcW == 0 || srcH == 0 {
+ if p == nil || length == 0 || srcW == 0 || srcH == 0 {
return nil, 0, 0, 0
}
defer C.free(unsafe.Pointer(p))
return C.GoBytes(p, length), int(srcW), int(srcH), int64(fid)
}
+
+// GetYUV2 get yuv data
+func (h *GoFFMPEG) GetYUV2() (unsafe.Pointer, []byte, int, int, int64) {
+ var fid C.long
+ var length C.int
+ var srcW, srcH, srcF C.int
+
+ p := C.wrap_fn_decoder_pic(unsafe.Pointer(libcffmpeg), h.ffmpeg, &srcW, &srcH, &srcF, &length, &fid)
+ if p == nil || length == 0 || srcW == 0 || srcH == 0 {
+ return nil, nil, 0, 0, 0
+ }
+ const maxLen = 0x7fffffff
+ size := int(length)
+ data := (*[maxLen]byte)(unsafe.Pointer(p))[:size:size]
+
+ return unsafe.Pointer(p), data, int(srcW), int(srcH), int64(fid)
+}
--
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