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优化编解码相关代码

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ziyue
2022-05-25 15:11:26 +08:00
parent 0739b1ddd2
commit 9736badcea
9 changed files with 630 additions and 395 deletions
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61
src/Codec/H264Encoder.cpp
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@@ -9,17 +9,14 @@
*/
#ifdef ENABLE_X264
#include "H264Encoder.h"
#include "Util/TimeTicker.h"
using namespace toolkit;
namespace mediakit {
H264Encoder::H264Encoder() {
}
H264Encoder::H264Encoder() {}
H264Encoder::~H264Encoder() {
//* 清除图像区域
@@ -39,7 +36,6 @@ H264Encoder::~H264Encoder() {
}
}
/*typedef struct x264_param_t
{
CPU 标志位
@@ -212,7 +208,7 @@ Value的值就是fps。
void (*param_free)( void* );
} x264_param_t;*/
bool H264Encoder::init(int iWidth, int iHeight, int iFps) {
bool H264Encoder::init(int iWidth, int iHeight, int iFps, int iBitRate) {
if (_pX264Handle) {
return true;
}
@@ -222,7 +218,7 @@ bool H264Encoder::init(int iWidth, int iHeight, int iFps) {
x264_param_default_preset(pX264Param, "ultrafast", "zerolatency");
//* cpuFlags
pX264Param->i_threads = X264_SYNC_LOOKAHEAD_AUTO; //* 取空缓冲区继续使用不死锁的保证.
pX264Param->i_threads = X264_SYNC_LOOKAHEAD_AUTO; //* 取空缓冲区继续使用不死锁的保证.
//* video Properties
pX264Param->i_width = iWidth; //* 宽度.
pX264Param->i_height = iHeight; //* 高度
@@ -230,21 +226,21 @@ bool H264Encoder::init(int iWidth, int iHeight, int iFps) {
pX264Param->i_keyint_max = iFps * 3; //ffmpeg:gop_size 关键帧最大间隔
pX264Param->i_keyint_min = iFps * 1; //ffmpeg:keyint_min 关键帧最小间隔
//* Rate control Parameters
pX264Param->rc.i_bitrate = 5000; //* 码率(比特率,单位Kbps)
pX264Param->rc.i_qp_step = 1; //最大的在帧与帧之间进行切变的量化因子的变化量。ffmpeg:max_qdiff
pX264Param->rc.i_qp_min = 10; //ffmpeg:qmin;最小的量化因子。取值范围1-51。建议在10-30之间。
pX264Param->rc.i_qp_max = 41; //ffmpeg:qmax;最大的量化因子。取值范围1-51。建议在10-30之间。
pX264Param->rc.i_bitrate = iBitRate / 1000; //* 码率(比特率,单位Kbps)
pX264Param->rc.i_qp_step = 1; //最大的在帧与帧之间进行切变的量化因子的变化量。ffmpeg:max_qdiff
pX264Param->rc.i_qp_min = 10; //ffmpeg:qmin;最小的量化因子。取值范围1-51。建议在10-30之间。
pX264Param->rc.i_qp_max = 41; //ffmpeg:qmax;最大的量化因子。取值范围1-51。建议在10-30之间。
pX264Param->rc.f_qcompress = 0.6;//ffmpeg:qcompress 量化器压缩比率0-1.越小则比特率越区域固定，但是越高越使量化器参数越固定
pX264Param->analyse.i_me_range = 16; //ffmpeg:me_range 运动侦测的半径
pX264Param->i_frame_reference = 3; //ffmpeg:refsB和P帧向前预测参考的帧数。取值范围1-16。
//该值不影响解码的速度，但是越大解码
//所需的内存越大。这个值在一般情况下
//越大效果越好，但是超过6以后效果就
//不明显了。
pX264Param->analyse.i_me_range = 16; //ffmpeg:me_range 运动侦测的半径
pX264Param->i_frame_reference = 3; //ffmpeg:refsB和P帧向前预测参考的帧数。取值范围1-16。
//该值不影响解码的速度，但是越大解码
//所需的内存越大。这个值在一般情况下
//越大效果越好，但是超过6以后效果就
//不明显了。
pX264Param->analyse.i_trellis = 1; //ffmpeg:trellis
pX264Param->analyse.i_trellis = 1; //ffmpeg:trellis
//pX264Param->analyse.i_me_method=X264_ME_DIA;//ffmpeg:me_method ME_ZERO 运动侦测的方式
pX264Param->rc.f_qblur = 0.5; //ffmpeg:qblur
pX264Param->rc.f_qblur = 0.5; //ffmpeg:qblur
//* bitstream parameters
/*open-GOP
@@ -268,7 +264,7 @@ bool H264Encoder::init(int iWidth, int iHeight, int iFps) {
由于B帧压缩性能好于P帧，因此open-GOP在编码性能上稍微优于close-GOP，
但为了兼容性和少一些麻烦，还是把opne-GOP关闭的好。*/
pX264Param->b_open_gop = 0;
pX264Param->i_bframe = 0; //最大B帧数.
pX264Param->i_bframe = 0; //最大B帧数.
pX264Param->i_bframe_pyramid = 0;
pX264Param->i_bframe_adaptive = X264_B_ADAPT_TRELLIS;
//* Log
@@ -304,20 +300,19 @@ bool H264Encoder::init(int iWidth, int iHeight, int iFps) {
return true;
}
int H264Encoder::inputData(char* apcYuv[3], int aiYuvLen[3], int64_t i64Pts, H264Frame** ppFrame) {
int H264Encoder::inputData(char *yuv[3], int linesize[3], int64_t cts, H264Frame **out_frame) {
//TimeTicker1(5);
_pPicIn->img.i_stride[0] = aiYuvLen[0];
_pPicIn->img.i_stride[1] = aiYuvLen[1];
_pPicIn->img.i_stride[2] = aiYuvLen[2];
_pPicIn->img.plane[0] = (uint8_t *) apcYuv[0];
_pPicIn->img.plane[1] = (uint8_t *) apcYuv[1];
_pPicIn->img.plane[2] = (uint8_t *) apcYuv[2];
_pPicIn->i_pts = i64Pts;
_pPicIn->img.i_stride[0] = linesize[0];
_pPicIn->img.i_stride[1] = linesize[1];
_pPicIn->img.i_stride[2] = linesize[2];
_pPicIn->img.plane[0] = (uint8_t *) yuv[0];
_pPicIn->img.plane[1] = (uint8_t *) yuv[1];
_pPicIn->img.plane[2] = (uint8_t *) yuv[2];
_pPicIn->i_pts = cts;
int iNal;
x264_nal_t* pNals;
x264_nal_t *pNals;
int iResult = x264_encoder_encode(_pX264Handle, &pNals, &iNal, _pPicIn,
_pPicOut);
int iResult = x264_encoder_encode(_pX264Handle, &pNals, &iNal, _pPicIn, _pPicOut);
if (iResult <= 0) {
return 0;
}
@@ -327,7 +322,7 @@ int H264Encoder::inputData(char* apcYuv[3], int aiYuvLen[3], int64_t i64Pts, H26
_aFrames[i].iLength = pNal.i_payload;
_aFrames[i].pucData = pNal.p_payload;
}
*ppFrame = _aFrames;
*out_frame = _aFrames;
return iNal;
}