91av视频/亚洲h视频/操亚洲美女/外国一级黄色毛片 - 国产三级三级三级三级

  • 大小: 112KB
    文件類型: .gz
    金幣: 1
    下載: 0 次
    發布日期: 2021-06-06
  • 語言: 其他
  • 標簽: YUV??RGB??

資源簡介

libyuv庫，包含RGB和yuv之間的轉換接口，圖像縮放接口等。包含頭文件libyuv.h即可，接口在yuv_convert.cpp中，代碼量很少，一看就懂。

資源截圖

代碼片段和文件信息 

#include?“yuv_convert.h“

#include?
#include?
#include?
#include?
#include?
#include?
#include?

//#include?“util/time_util.hpp“
//#include?“base/log_system.hpp“

#ifdef?__cplusplus
extern?“C“?{
#endif

#include?“libyuv.h“

#ifdef?__cplusplus
}
#endif

using?namespace?libyuv;

//static?LogSystem?log_（“yuv_convert“）;
//#define?debug_info（fmt?args...）?log_.Dbg（“%s@%d:?“?fmt?__FUNCTION__?__LINE__?##args）
//#define?print_info（fmt?args...）?log_.Info（“%s@%d:?“?fmt?__FUNCTION__?__LINE__?##args）
//#define?error_info（fmt?args...）?log_.Err（“%s@%d:?“?fmt?__FUNCTION__?__LINE__?##args）

int?fb_index?=?-1;
unsigned?char?*rgb_buffer;
unsigned?char?*yuv_buffer;
unsigned?char?*fb_mem;
unsigned?int?w;
unsigned?int?h;

void?ConvToI420（unsigned?char?*dataIn?unsigned?char?*dataOut?int?width?int?height?enum?ConvertType?type）
{
????unsigned?int?FourCC?=?0;

????switch?（type）?{
????????case?CONV_UYVY_TO_I420:
????????????FourCC?=?FOURCC_2VUY;
????????????break;

????????case?CONV_ABGR_TO_I420:
????????????FourCC?=?FOURCC_ABGR;
????????????break;

????????default:
????????????FourCC?=?FOURCC_2VUY;
????????????break;
????}

????//unsigned?long?long?int?time1?=?GetTimeOfSysUs（）;
????ConvertToI420（dataIn?width?*?height?*?3?/?2
??????????????????dataOut?width?dataOut?+?（width?*?height）?width?/?2?dataOut?+?（width?*?height?*?5?/?4）?width?/?2
??????????????????0?0?width?height?width?height?kRotate0?FourCC）;
????//unsigned?long?long?int?time2?=?GetTimeOfSysUs（）;
????//debug_info（“ConvertToI420?delay:?%lldms\n“?（time2?-?time1）?/?1000）;
}

void?ConvToARGB（unsigned?char?*dataIn?unsigned?char?*dataOut?int?width?int?height?enum?ConvertType?type）
{
????unsigned?int?FourCC?=?0;

????switch?（type）?{
????????case?CONV_I420_TO_ARGB:
????????????FourCC?=?FOURCC_IYUV;
????????????break;

????????case?CONV_UYVY_TO_ARGB:
????????????FourCC?=?FOURCC_2VUY;
????????????break;

????????default:
????????????FourCC?=?FOURCC_IYUV;
????????????break;
????}

????//unsigned?long?long?int?time1?=?GetTimeOfSysUs（）;
????ConvertToARGB（dataIn?width?*?height?*?3?/?2?dataOut?width?*?4?0?0?width?height?width?height?kRotate0?FourCC）;
????//unsigned?long?long?int?time2?=?GetTimeOfSysUs（）;
????//debug_info（“ConvertToARGB?delay:?%lldms\n“?（time2?-?time1）?/?1000）;
}


void?YuvInit（unsigned?int?width?unsigned?int?height）
{
????w?=?width;
????h?=?height;

????printf（“YuvInit?w:%d?h:%d\n“?w?h）;
????rgb_buffer?=?（unsigned?char?*）malloc（w?*?h?*?4）;
????yuv_buffer?=?（unsigned?char?*）malloc（w?*?h?*?2）;

????system（“sudo?service?lightdm?stop“）;
????fb_index?=?open（“/dev/fb0“?O_RDWR）;
????fb_mem?=?（unsigned?char?*）mmap（NULL?w?*?h?*?4?PROT_READ?|?PROT_WRITE?MAP_SHARED?fb_index?0）;
}

void?YuvWriteframe（unsigned?char?*data）
{
????ConvToARGB（data?rgb_buffer?w?h?CONV_I420_TO_ARGB）;
????memcpy（fb_

評論

共有 條評論