From 5a00b6f95ebe4d6e487ef96c88d385844541a15b Mon Sep 17 00:00:00 2001
From: deva <deva>
Date: Sat, 12 Aug 2006 15:47:29 +0000
Subject: New tasks! Made dvfile read at most 25 fps.

---
 client/dvfile.cc | 18 ++++++++++++++++--
 client/dvfile.h  |  1 +
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/client/dvfile.cc b/client/dvfile.cc
index 601c21d..a34de3d 100644
--- a/client/dvfile.cc
+++ b/client/dvfile.cc
@@ -31,6 +31,8 @@
 
 #include "info.h"
 
+#include <sys/time.h>
+
 dvfile::dvfile()
 {
   fp = fopen(TEST_MOVIE, "r");
@@ -44,9 +46,18 @@ dvfile::~dvfile()
 
 Frame *dvfile::readFrame()
 {
-  unsigned char *ptr = new unsigned char[DVPACKAGE_SIZE];
+  timeval tv;
+
+  // Wait untill atleast 1/25th of a second has passed in order to
+  // preserve 25fps when enough cpu is available
+  gettimeofday(&tv, NULL);
+  long long unsigned int diff =
+    tv.tv_sec * 1000000LL + 
+    tv.tv_usec - last_frame;
 
-  sleep_1_frame();
+  if(diff < (1000000 / 25)) usleep((1000000 / 25) - diff);
+  
+  unsigned char *ptr = new unsigned char[DVPACKAGE_SIZE];
 
   if(fp) {
     while(fread(ptr, DVPACKAGE_SIZE, 1, fp) == 0) {
@@ -58,5 +69,8 @@ Frame *dvfile::readFrame()
   
   Frame *frame = new Frame((char*)ptr, DVPACKAGE_SIZE, VF_DV, NULL, 0, AF_DV);
 
+  gettimeofday(&tv, NULL);
+  last_frame = tv.tv_sec * 1000000LL + tv.tv_usec;
+
   return frame;
 }
diff --git a/client/dvfile.h b/client/dvfile.h
index 9e21a4d..8a45044 100644
--- a/client/dvfile.h
+++ b/client/dvfile.h
@@ -46,6 +46,7 @@ public:
   Frame *readFrame();
 
 private:
+  long long last_frame;
   FILE* fp;
 };
 
-- 
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