2023-03-07:x264的视频编码器,不用ffmpeg,用libx264.dll也行。请用go语言调用libx264.dll,将yuv文件编码成h264文件。
2023-03-07:x264的视频编码器,不用ffmpeg,用libx264.dll也行。请用go语言调用libx264.dll,将yuv文件编码成h264文件。
答案2023-03-07:
使用 github.com/moonfdd/x264-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_x264_encoder/main.go
参考了雷霄骅的基于libx264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_x264_encoder/simplest_x264_encoder.cpp
package main
import (
"fmt"
"os"
"unsafe"
"github.com/moonfdd/ffmpeg-go/ffcommon"
"github.com/moonfdd/x264-go/libx264"
"github.com/moonfdd/x264-go/libx264common"
)
func main0() ffcommon.FInt {
var ret ffcommon.FInt
var y_size ffcommon.FInt
var i, j ffcommon.FInt
//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.h264"
fp_dst, _ := os.Create(fp_dst_file)
//Encode 50 frame
//if set 0, encode all frame
var frame_num ffcommon.FInt = 0
var csp ffcommon.FInt = libx264.X264_CSP_I420
var width, height ffcommon.FInt = 640, 360
var iNal ffcommon.FInt = 0
var pNals *libx264.X264NalT
var pHandle *libx264.X264T
pPic_in := new(libx264.X264PictureT)
pPic_out := new(libx264.X264PictureT)
pParam := new(libx264.X264ParamT)
//Check
if fp_src == nil || fp_dst == nil {
fmt.Printf("Error open files.\n")
return -1
}
pParam.X264ParamDefault()
pParam.IWidth = width
pParam.IHeight = height
/*
//Param
pParam->i_log_level = X264_LOG_DEBUG;
pParam->i_threads = X264_SYNC_LOOKAHEAD_AUTO;
pParam->i_frame_total = 0;
pParam->i_keyint_max = 10;
pParam->i_bframe = 5;
pParam->b_open_gop = 0;
pParam->i_bframe_pyramid = 0;
pParam->rc.i_qp_constant=0;
pParam->rc.i_qp_max=0;
pParam->rc.i_qp_min=0;
pParam->i_bframe_adaptive = X264_B_ADAPT_TRELLIS;
pParam->i_fps_den = 1;
pParam->i_fps_num = 25;
pParam->i_timebase_den = pParam->i_fps_num;
pParam->i_timebase_num = pParam->i_fps_den;
*/
pParam.ICsp = csp
pParam.X264ParamApplyProfile(libx264.X264ProfileNames[5])
pHandle = pParam.X264EncoderOpen164()
pPic_out.X264PictureInit()
pPic_in.X264PictureAlloc(csp, pParam.IWidth, pParam.IHeight)
//ret = x264_encoder_headers(pHandle, &pNals, &iNal);
y_size = pParam.IWidth * pParam.IHeight
//detect frame number
if frame_num == 0 {
fi, _ := fp_src.Stat()
switch csp {
case libx264.X264_CSP_I444:
frame_num = int32(fi.Size()) / (y_size * 3)
case libx264.X264_CSP_I420:
frame_num = int32(fi.Size()) / (y_size * 3 / 2)
default:
fmt.Printf("Colorspace Not Support.\n")
return -1
}
}
//Loop to Encode
for i = 0; i < frame_num; i++ {
switch csp {
case libx264.X264_CSP_I444:
fp_src.Read(ffcommon.ByteSliceFromByteP(pPic_in.Img.Plane[0], int(y_size))) //Y
fp_src.Read(ffcommon.ByteSliceFromByteP(pPic_in.Img.Plane[1], int(y_size))) //U
fp_src.Read(ffcommon.ByteSliceFromByteP(pPic_in.Img.Plane[2], int(y_size))) //V
case libx264.X264_CSP_I420:
fp_src.Read(ffcommon.ByteSliceFromByteP(pPic_in.Img.Plane[0], int(y_size))) //Y
fp_src.Read(ffcommon.ByteSliceFromByteP(pPic_in.Img.Plane[1], int(y_size/4))) //U
fp_src.Read(ffcommon.ByteSliceFromByteP(pPic_in.Img.Plane[2], int(y_size/4))) //V
default:
fmt.Printf("Colorspace Not Support.\n")
return -1
}
pPic_in.IPts = int64(i)
ret = pHandle.X264EncoderEncode(&pNals, &iNal, pPic_in, pPic_out)
if ret < 0 {
fmt.Printf("Error.\n")
return -1
}
fmt.Printf("Succeed encode frame: %5d\n", i)
for j = 0; j < iNal; j++ {
a := unsafe.Sizeof(libx264.X264NalT{})
pNal := (*libx264.X264NalT)(unsafe.Pointer(uintptr(unsafe.Pointer(pNals)) + uintptr(a*uintptr(j))))
fp_dst.Write(ffcommon.ByteSliceFromByteP(pNal.PPayload, int(pNal.IPayload)))
}
}
i = 0
//flush encoder
for {
ret = pHandle.X264EncoderEncode(&pNals, &iNal, nil, pPic_out)
if ret == 0 {
break
}
fmt.Printf("Flush 1 frame.\n")
for j = 0; j < iNal; j++ {
a := unsafe.Sizeof(libx264.X264NalT{})
pNal := (*libx264.X264NalT)(unsafe.Pointer(uintptr(unsafe.Pointer(pNals)) + uintptr(a*uintptr(j))))
fp_dst.Write(ffcommon.ByteSliceFromByteP(pNal.PPayload, int(pNal.IPayload)))
}
i++
}
pPic_in.X264PictureClean()
pHandle.X264EncoderClose()
pHandle = nil
fp_src.Close()
fp_dst.Close()
fmt.Printf("\nffplay %s\n", fp_dst_file)
return 0
}
func main() {
fmt.Println(libx264.X264_POINTVER)
os.Setenv("Path", os.Getenv("Path")+";./lib")
libx264common.SetLibx264Path("./lib/libx264-164.dll")
main0()
}
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