print the run time and speed ratio for encoding

fix the bug for RGB2YUV

 #include "AVTranscoder.h"
+#include "tools.h"
+
 extern "C" {
 #include <libswscale/swscale.h> 
 }
@@ -10,6 +12,9 @@ extern "C" {
 #define SCALED_H 60
 #define SRC_W 320
 #define SRC_H 240
+uint8_t blank_r = 0x16;
+uint8_t blank_g = 0x5a;
+uint8_t blank_b = 0x82;
 
 CAVTranscoder::CAVTranscoder(bool bOne2One):
 _start_time(INT64_MAX),
@@ -43,6 +48,7 @@ _last_videos_got(-1)
 			printf("Error alloc frame buffer for scaling video frame");
 		}
 	}
+	RGB2YUV(blank_r, blank_g, blank_b, &_blank_y, &_blank_u, &_blank_v);
 }
 
 
@@ -342,9 +348,9 @@ int CAVTranscoder::open_output_file(const char *filename)
 			}
 		}
 		if(fill_pure_color){//fill with pure color
-				memset(pDstFrame->data[0], 0, _nOutputWidth * _nOutputHeight);
-				memset(pDstFrame->data[1], 0x80, _nOutputWidth *_nOutputHeight / 4);
-				memset(pDstFrame->data[2], 0x80, _nOutputWidth * _nOutputHeight / 4);
+				memset(pDstFrame->data[0], _blank_y, _nOutputWidth * _nOutputHeight);
+				memset(pDstFrame->data[1], _blank_u, _nOutputWidth *_nOutputHeight / 4);
+				memset(pDstFrame->data[2], _blank_v, _nOutputWidth * _nOutputHeight / 4);
 		}
 
 		int imageIdx = 0;
@@ -422,7 +428,10 @@ int CAVTranscoder::open_output_file(const char *filename)
 		int nDstSize = avpicture_get_size(AV_PIX_FMT_YUV420P,_nOutputWidth, _nOutputHeight);
 		uint8_t *dstbuf = new uint8_t[nDstSize];
 		avpicture_fill((AVPicture*)pDstFrame, dstbuf, AV_PIX_FMT_YUV420P, _nOutputWidth, _nOutputHeight);
-		memset(dstbuf, 0x80, nDstSize);
+
+		memset(pDstFrame->data[0], _blank_y, _nOutputWidth * _nOutputHeight);
+		memset(pDstFrame->data[1], _blank_u, _nOutputWidth *_nOutputHeight / 4);
+		memset(pDstFrame->data[2], _blank_v, _nOutputWidth * _nOutputHeight / 4);
 
 		if (decoders_got_frame.size() == 2){
 			if (_last_videos_got != 2) {

@@ -44,6 +44,8 @@ private:
 	struct SwsContext * _swsCtx;
 	AVFrame * _scaledFrame;
 	int _last_videos_got;
+
+	uint8_t _blank_y, _blank_u, _blank_v;
 public:
 	void set_max_audio(int max_audio);
 };

@@ -961,6 +961,8 @@ int load_record_info(char * record_info)
 
 int process_av_files(char * record_info)
 {
+	time_t start, end;
+	time(&start);
 	load_record_info(record_info);
 
 	get_outinfo_file_name(record_info);
@@ -1014,6 +1016,10 @@ int process_av_files(char * record_info)
 
 	save_out_info(((double)cur_time)/1000.0, out_media_file.c_str());
 
+	time(&end);
+
+	printf("\nfinished,used %"PRIu64" second,encoded %.0lf second, the speed ratio is %.3lfX\n", end - start, (double)cur_time / 1000, cur_time / 1000.0 / (end - start));
+
 	return 0;
 }
 

@@ -93,6 +93,7 @@
     <ClInclude Include="AudioDecoder.h" />
     <ClInclude Include="AVDecoder.h" />
     <ClInclude Include="media_info.h" />
+    <ClInclude Include="tools.h" />
     <ClInclude Include="VideoDecoder.h" />
     <ClInclude Include="AVTranscoder.h" />
   </ItemGroup>

@@ -53,5 +53,8 @@
     <ClInclude Include="AVTranscoder.h">
       <Filter>头文件</Filter>
     </ClInclude>
+    <ClInclude Include="tools.h">
+      <Filter>头文件</Filter>
+    </ClInclude>
   </ItemGroup>
 </Project>
\ No newline at end of file

@@ -39,6 +39,6 @@ time_t calc_sec1970(int Y, int M, int D, int h, int m, int s)
 
 void RGB2YUV(unsigned char r, unsigned char  g, unsigned char b, unsigned char *y, unsigned char * u, unsigned char * v){
 	*y = (unsigned char)(0.30*r + 0.59*g + 0.11*b);
-	*u = (unsigned char)(0.493*(b - (*y)));
-	*v = (unsigned char)(0.877*(r - (*y)));
+	*u = (unsigned char)(0.493*(b - (*y)) + 128);
+	*v = (unsigned char)(0.877*(r - (*y)) + 128);
 }