2023-03-08：x265的视频编码器，不用ffmpeg，用libx265.dll也行。请用go语言调用libx265.dll，将yuv文件编码成h265文件。
答案2023-03-08：
使用 github.com/moonfdd/x265-go 库,代码写在了这个库里。
这个库根据头文件编写，不依赖头文件。
执行命令：
go run ./examples/simplest_x265_encoder/main.go
参考了雷霄骅的基于libx265的视频编码器，代码用golang编写。代码如下：
// https://github.com/leixiaohua1020/simplest_encoder/blob/master/simplest_x265_encoder/simplest_x265_encoder.cpp
package main
import (
"fmt"
"os"
"unsafe"
"github.com/moonfdd/ffmpeg-go/ffcommon"
"github.com/moonfdd/x265-go/libx265"
"github.com/moonfdd/x265-go/libx265common"
)
func main0() ffcommon.FInt {
var i, j ffcommon.FInt
var ret ffcommon.FInt
var y_size ffcommon.FInt
var buff []byte
//FILE* fp_src = fopen("../cuc_ieschool_640x360_yuv444p.yuv", "rb");
fp_src, _ := os.Open("./resources/cuc_ieschool_640x360_yuv420p.yuv")
fp_dst_file := "./out/cuc_ieschool_640x360_yuv420p.h265"
fp_dst, _ := os.Create(fp_dst_file)
var pNals *libx265.X265Nal
var iNal ffcommon.FUint32T = 0
var pParam *libx265.X265Param
var pHandle *libx265.X265Encoder
var pPic_in *libx265.X265Picture
//Encode 50 frame
//if set 0, encode all frame
var frame_num ffcommon.FInt = 0
var csp ffcommon.FInt = libx265.X265_CSP_I420
var width, height ffcommon.FInt = 640, 360
//Check
if fp_src == nil || fp_dst == nil {
fmt.Printf("Error open files.\n")
return -1
}
pParam = libx265.X265ParamAlloc()
pParam.X265ParamDefault()
pParam.BRepeatHeaders = 1 //write sps,pps before keyframe
pParam.InternalCsp = csp
pParam.SourceWidth = width
pParam.SourceHeight = height
pParam.FpsNum = 25
pParam.FpsDenom = 1
//Init
pHandle = pParam.X265EncoderOpen207()
if pHandle == nil {
fmt.Printf("x265_encoder_open err\n")
return 0
}
y_size = pParam.SourceWidth * pParam.SourceHeight
pPic_in = libx265.X265PictureAlloc()
pParam.X265PictureInit(pPic_in)
if frame_num == 0 {
fi, _ := fp_src.Stat()
switch csp {
case libx265.X265_CSP_I444:
buff = make([]byte, y_size*3)
frame_num = int32(fi.Size()) / (y_size * 3)
pPic_in.Planes[0] = uintptr(unsafe.Pointer(&buff[0]))
pPic_in.Planes[1] = uintptr(unsafe.Pointer(&buff[0])) + uintptr(y_size)
pPic_in.Planes[2] = uintptr(unsafe.Pointer(&buff[0])) + uintptr(y_size*2)
pPic_in.Stride[0] = width
pPic_in.Stride[1] = width
pPic_in.Stride[2] = width
case libx265.X265_CSP_I420:
buff = make([]byte, y_size*3/2)
frame_num = int32(fi.Size()) / (y_size * 3 / 2)
pPic_in.Planes[0] = uintptr(unsafe.Pointer(&buff[0]))
pPic_in.Planes[1] = uintptr(unsafe.Pointer(&buff[0])) + uintptr(y_size)
pPic_in.Planes[2] = uintptr(unsafe.Pointer(&buff[0])) + uintptr(y_size*5/4)
pPic_in.Stride[0] = width
pPic_in.Stride[1] = width / 2
pPic_in.Stride[2] = width / 2
default:
fmt.Printf("Colorspace Not Support.\n")
return -1
}
}
//Loop to Encode
for i = 0; i < frame_num; i++ {
switch csp {
case libx265.X265_CSP_I444:
fp_src.Read(ffcommon.ByteSliceFromByteP((*byte)(unsafe.Pointer(pPic_in.Planes[0])), int(y_size))) //Y
fp_src.Read(ffcommon.ByteSliceFromByteP((*byte)(unsafe.Pointer(pPic_in.Planes[1])), int(y_size))) //U
fp_src.Read(ffcommon.ByteSliceFromByteP((*byte)(unsafe.Pointer(pPic_in.Planes[2])), int(y_size))) //V
case libx265.X265_CSP_I420:
fp_src.Read(ffcommon.ByteSliceFromByteP((*byte)(unsafe.Pointer(pPic_in.Planes[0])), int(y_size))) //Y
fp_src.Read(ffcommon.ByteSliceFromByteP((*byte)(unsafe.Pointer(pPic_in.Planes[1])), int(y_size/4))) //U
fp_src.Read(ffcommon.ByteSliceFromByteP((*byte)(unsafe.Pointer(pPic_in.Planes[2])), int(y_size/4))) //V
default:
fmt.Printf("Colorspace Not Support.\n")
return -1
}
ret = pHandle.X265EncoderEncode(&pNals, &iNal, pPic_in, nil)
fmt.Printf("Succeed encode frame: %5d\n", i)
for j = 0; j < int32(iNal); j++ {
a := unsafe.Sizeof(libx265.X265Nal{})
pNal := (*libx265.X265Nal)(unsafe.Pointer(uintptr(unsafe.Pointer(pNals)) + uintptr(a*uintptr(j))))
fp_dst.Write(ffcommon.ByteSliceFromByteP(pNal.Payload, int(pNal.SizeBytes)))
}
}
//flush encoder
for {
ret = pHandle.X265EncoderEncode(&pNals, &iNal, nil, nil)
if ret == 0 {
break
}
fmt.Printf("Flush 1 frame.\n")
for j = 0; j < int32(iNal); j++ {
a := unsafe.Sizeof(libx265.X265Nal{})
pNal := (*libx265.X265Nal)(unsafe.Pointer(uintptr(unsafe.Pointer(pNals)) + uintptr(a*uintptr(j))))
fp_dst.Write(ffcommon.ByteSliceFromByteP(pNal.Payload, int(pNal.SizeBytes)))
}
i++
}
pHandle.X265EncoderClose()
pPic_in.X265PictureFree()
pParam.X265ParamFree()
fp_src.Close()
fp_dst.Close()
fmt.Printf("\nffplay %s\n", fp_dst_file)
return 0
}
func main() {
os.Setenv("Path", os.Getenv("Path")+";./lib")
libx265common.SetLibx265Path("./lib/libx265.dll")
main0()
}
