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Fixed breaking off replay in case the user hits "Play" or "Pause" too soon after going into "Pause live video" mode

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This commit is contained in:
Klaus Schmidinger
2003-05-30 13:23:54 +02:00
parent de86dc7d01
commit 77b56da51f
3 changed files with 56 additions and 49 deletions
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95
recording.c
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@@ -4,7 +4,7 @@
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: recording.c 1.79 2003/05/24 11:22:34 kls Exp $
* $Id: recording.c 1.80 2003/05/30 13:23:54 kls Exp $
*/
#include "recording.h"
@@ -769,6 +769,12 @@ void cRecordingUserCommand::InvokeCommand(const char *State, const char *Recordi
#define INDEXFILESUFFIX "/index.vdr"
// The number of frames to stay off the end in case of time shift:
#define INDEXSAFETYLIMIT 100 // frames
// The maximum time to wait before giving up while catching up on an index file:
#define MAXINDEXCATCHUP 8 // seconds
// The minimum age of an index file for considering it no longer to be written:
#define MININDEXAGE 3600 // seconds
@@ -852,47 +858,50 @@ bool cIndexFile::CatchUp(int Index)
{
// returns true unless something really goes wrong, so that 'index' becomes NULL
if (index && f >= 0) {
if (Index < 0 || Index >= last) {
struct stat buf;
if (fstat(f, &buf) == 0) {
if (time(NULL) - buf.st_mtime > MININDEXAGE) {
// apparently the index file is not being written any more
close(f);
f = -1;
return true;
}
int newLast = buf.st_size / sizeof(tIndex) - 1;
if (newLast > last) {
if (size <= newLast) {
size *= 2;
if (size <= newLast)
size = newLast + 1;
}
index = (tIndex *)realloc(index, size * sizeof(tIndex));
if (index) {
int offset = (last + 1) * sizeof(tIndex);
int delta = (newLast - last) * sizeof(tIndex);
if (lseek(f, offset, SEEK_SET) == offset) {
if (safe_read(f, &index[last + 1], delta) != delta) {
esyslog("ERROR: can't read from index");
free(index);
index = NULL;
close(f);
f = -1;
return true;
}
last = newLast;
}
else
LOG_ERROR_STR(fileName);
}
else
esyslog("ERROR: can't realloc() index");
}
}
else
LOG_ERROR_STR(fileName);
}
for (int i = 0; i <= MAXINDEXCATCHUP && (Index < 0 || Index >= last); i++) {
struct stat buf;
if (fstat(f, &buf) == 0) {
if (time(NULL) - buf.st_mtime > MININDEXAGE) {
// apparently the index file is not being written any more
close(f);
f = -1;
break;
}
int newLast = buf.st_size / sizeof(tIndex) - 1;
if (newLast > last) {
if (size <= newLast) {
size *= 2;
if (size <= newLast)
size = newLast + 1;
}
index = (tIndex *)realloc(index, size * sizeof(tIndex));
if (index) {
int offset = (last + 1) * sizeof(tIndex);
int delta = (newLast - last) * sizeof(tIndex);
if (lseek(f, offset, SEEK_SET) == offset) {
if (safe_read(f, &index[last + 1], delta) != delta) {
esyslog("ERROR: can't read from index");
free(index);
index = NULL;
close(f);
f = -1;
break;
}
last = newLast;
}
else
LOG_ERROR_STR(fileName);
}
else
esyslog("ERROR: can't realloc() index");
}
}
else
LOG_ERROR_STR(fileName);
if (Index < last - (i ? 2 * INDEXSAFETYLIMIT : 0) || Index > 10 * INDEXSAFETYLIMIT) // keep off the end in case of "Pause live video"
break;
sleep(1);
}
}
return index != NULL;
}
@@ -940,7 +949,7 @@ int cIndexFile::GetNextIFrame(int Index, bool Forward, uchar *FileNumber, int *F
int d = Forward ? 1 : -1;
for (;;) {
Index += d;
if (Index >= 0 && Index < last - ((Forward && StayOffEnd) ? 100 : 0)) {
if (Index >= 0 && Index < last - ((Forward && StayOffEnd) ? INDEXSAFETYLIMIT : 0)) {
if (index[Index].type == I_FRAME) {
if (FileNumber)
*FileNumber = index[Index].number;