add ts_info.cpp for HLS research

trunk/research/ts_info.cpp

@@ -0,0 +1,50 @@
+/**
+g++ -o ts_info ts_info.cpp -g -O0 -ansi
+*/
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <string.h>
+
+/**
+ISO/IEC 13818-1:2000(E)
+Introduction
+SECTION 1 ¨C GENERAL
+SECTION 2 ¨C TECHNICAL ELEMENTS
+    2.4 Transport Stream bitstream requirements
+    2.5 Program Stream bitstream requirements
+    2.6 Program and program element descriptors
+    2.7 Restrictions on the multiplexed stream semantics
+Annex A ¨C CRC Decoder Model
+*/
+
+#define trace(msg, ...) printf(msg"\n", ##__VA_ARGS__);
+
+int main(int /*argc*/, char** /*argv*/)
+{
+    const char* file = "livestream-1347.ts";
+    int fd = open(file, O_RDONLY);
+    
+    trace("demuxer+read packet count offset P+0  P+1  P+2  P+x P+L2 P+L1 P+L0");
+    for (int i = 0, offset = 0; ; i++) {
+        unsigned char PES[188];
+        memset(PES, 0, sizeof(PES));
+        
+        int ret = read(fd, PES, sizeof(PES));
+        if (ret == 0) {
+            trace("demuxer+read EOF, read completed, offset: %07d.", offset);
+            break;
+        }
+        trace("demuxer+read packet %04d %07d 0x%02x 0x%02x 0x%02x ... 0x%02x 0x%02x 0x%02x", 
+            i, offset, PES[0], PES[1], PES[2], PES[185], PES[186], PES[187]);
+        
+        
+        offset += ret;
+    }
+    
+    close(fd);
+    return 0;
+}
+