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(-)
(limited to 'client')
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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