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vdr/recording.c
Klaus Schmidinger ddd1e13e53 Version 1.3.29 
- Fixed a race condition in cTransfer (thanks to Klaus Heppenheimer for reporting this one).
  In doing so, the 'active' variables used by the actual derived cThread classes
  have been replaced by the cThread::Running() function.
  Plugin authors may want to check their derived cThread classes and replace any 'active'
  variables the same way as, for instance, done in transfer.c.
- Fixed handling EPG data for time shifted events (thanks to Marco Schlüßler).
- Increased the default value for 'Min. user inactivity' to 300 minutes (suggested
  by Helmut Auer).
- Now storing the channel id in the info.vdr file even if there is no EPG info
  available (thanks to Andreas Brachold for reporting that there are empty info.vdr
  files created in that case).
- Added some 'mkdir -p' to the Makefile's 'install' target (thanks to Wayne Keer).
- Changed the title of the recording info menu (thanks to Rolf Ahrenberg).
- Fixed handling the frame number display if '7' is pressed before the first editing
  mark, or '9' after the last one (thanks to Thomas Günther).
- Now discarding any previous numerical input to switch channels if Up, Down, Channel+,
  Channel-, Left or Right is pressed (thanks to Wolfgang Rohdewald for reporting a
  problem with this).
- Pressing Ok while entering a channel number now immediately switches to that
  channel, without waiting for further input.
- Avoiding unnecessary OSD draw operations caused by the audio track description
  display in the ST:TNG skin's channel display (thanks to Oliver Endriss for reporting
  this).
- Removed the VIDEO_STILLPICTURE_WORKS_WITH_VDR_FRAMES stuff from
  cDvbDevice::StillPicture(), since apparently the VIDEO_STILLPICTURE call works.
2005-08-15 18:00:00 +02:00

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/*
* recording.c: Recording file handling
*
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: recording.c 1.111 2005/08/13 14:00:48 kls Exp $
*/
#include "recording.h"
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <sys/stat.h>
#include <unistd.h>
#include "channels.h"
#include "i18n.h"
#include "interface.h"
#include "remux.h" //XXX+ I_FRAME
#include "skins.h"
#include "tools.h"
#include "videodir.h"
#define SUMMARYFALLBACK
#define RECEXT ".rec"
#define DELEXT ".del"
/* This was the original code, which works fine in a Linux only environment.
Unfortunately, because of Windows and its brain dead file system, we have
to use a more complicated approach, in order to allow users who have enabled
the VFAT compile time option to see their recordings even if they forget to
enable VFAT when compiling a new version of VDR... Gee, do I hate Windows.
(kls 2002-07-27)
#define DATAFORMAT "%4d-%02d-%02d.%02d:%02d.%02d.%02d" RECEXT
#define NAMEFORMAT "%s/%s/" DATAFORMAT
*/
// start of implementation for brain dead systems
#define DATAFORMAT "%4d-%02d-%02d.%02d%*c%02d.%02d.%02d" RECEXT
#ifdef VFAT
#define nameFORMAT "%4d-%02d-%02d.%02d.%02d.%02d.%02d" RECEXT
#else
#define nameFORMAT "%4d-%02d-%02d.%02d:%02d.%02d.%02d" RECEXT
#endif
#define NAMEFORMAT "%s/%s/" nameFORMAT
// end of implementation for brain dead systems
#define RESUMEFILESUFFIX "/resume%s%s.vdr"
#ifdef SUMMARYFALLBACK
#define SUMMARYFILESUFFIX "/summary.vdr"
#endif
#define INFOFILESUFFIX "/info.vdr"
#define MARKSFILESUFFIX "/marks.vdr"
#define MINDISKSPACE 1024 // MB
#define DELETEDLIFETIME 1 // hours after which a deleted recording will be actually removed
#define REMOVECHECKDELTA 3600 // seconds between checks for removing deleted files
#define DISKCHECKDELTA 100 // seconds between checks for free disk space
#define REMOVELATENCY 10 // seconds to wait until next check after removing a file
#define TIMERMACRO_TITLE "TITLE"
#define TIMERMACRO_EPISODE "EPISODE"
#define MAX_SUBTITLE_LENGTH 40
void RemoveDeletedRecordings(void)
{
static time_t LastRemoveCheck = 0;
if (time(NULL) - LastRemoveCheck > REMOVECHECKDELTA) {
// Make sure only one instance of VDR does this:
cLockFile LockFile(VideoDirectory);
if (!LockFile.Lock())
return;
// Remove the oldest file that has been "deleted":
cRecordings DeletedRecordings(true);
if (DeletedRecordings.Load()) {
cRecording *r = DeletedRecordings.First();
cRecording *r0 = r;
while (r) {
if (r->start < r0->start)
r0 = r;
r = DeletedRecordings.Next(r);
}
if (r0 && time(NULL) - r0->start > DELETEDLIFETIME * 3600) {
r0->Remove();
RemoveEmptyVideoDirectories();
LastRemoveCheck += REMOVELATENCY;
return;
}
}
LastRemoveCheck = time(NULL);
}
}
void AssertFreeDiskSpace(int Priority)
{
// With every call to this function we try to actually remove
// a file, or mark a file for removal ("delete" it), so that
// it will get removed during the next call.
static time_t LastFreeDiskCheck = 0;
int Factor = (Priority == -1) ? 10 : 1;
if (time(NULL) - LastFreeDiskCheck > DISKCHECKDELTA / Factor) {
if (!VideoFileSpaceAvailable(MINDISKSPACE)) {
// Make sure only one instance of VDR does this:
cLockFile LockFile(VideoDirectory);
if (!LockFile.Lock())
return;
// Remove the oldest file that has been "deleted":
isyslog("low disk space while recording, trying to remove a deleted recording...");
cRecordings DeletedRecordings(true);
if (DeletedRecordings.Load()) {
cRecording *r = DeletedRecordings.First();
cRecording *r0 = r;
while (r) {
if (r->start < r0->start)
r0 = r;
r = DeletedRecordings.Next(r);
}
if (r0 && r0->Remove()) {
LastFreeDiskCheck += REMOVELATENCY / Factor;
return;
}
}
// No "deleted" files to remove, so let's see if we can delete a recording:
isyslog("...no deleted recording found, trying to delete an old recording...");
if (Recordings.Load()) {
cRecording *r = Recordings.First();
cRecording *r0 = NULL;
while (r) {
if (!r->IsEdited() && r->lifetime < MAXLIFETIME) { // edited recordings and recordings with MAXLIFETIME live forever
if ((r->lifetime == 0 && Priority > r->priority) || // the recording has no guaranteed lifetime and the new recording has higher priority
(r->lifetime > 0 && (time(NULL) - r->start) / SECSINDAY >= r->lifetime)) { // the recording's guaranteed lifetime has expired
if (r0) {
if (r->priority < r0->priority || (r->priority == r0->priority && r->start < r0->start))
r0 = r; // in any case we delete the one with the lowest priority (or the older one in case of equal priorities)
}
else
r0 = r;
}
}
r = Recordings.Next(r);
}
if (r0 && r0->Delete()) {
Recordings.Del(r0);
return;
}
}
// Unable to free disk space, but there's nothing we can do about that...
isyslog("...no old recording found, giving up");
Interface->Confirm(tr("Low disk space!"), 30);
}
LastFreeDiskCheck = time(NULL);
}
}
// --- cResumeFile ------------------------------------------------------------
cResumeFile::cResumeFile(const char *FileName)
{
fileName = MALLOC(char, strlen(FileName) + strlen(RESUMEFILESUFFIX) + 1);
if (fileName) {
strcpy(fileName, FileName);
sprintf(fileName + strlen(fileName), RESUMEFILESUFFIX, Setup.ResumeID ? "." : "", Setup.ResumeID ? *itoa(Setup.ResumeID) : "");
}
else
esyslog("ERROR: can't allocate memory for resume file name");
}
cResumeFile::~cResumeFile()
{
free(fileName);
}
int cResumeFile::Read(void)
{
int resume = -1;
if (fileName) {
struct stat st;
if (stat(fileName, &st) == 0) {
if ((st.st_mode & S_IWUSR) == 0) // no write access, assume no resume
return -1;
}
int f = open(fileName, O_RDONLY);
if (f >= 0) {
if (safe_read(f, &resume, sizeof(resume)) != sizeof(resume)) {
resume = -1;
LOG_ERROR_STR(fileName);
}
close(f);
}
else if (errno != ENOENT)
LOG_ERROR_STR(fileName);
}
return resume;
}
bool cResumeFile::Save(int Index)
{
if (fileName) {
int f = open(fileName, O_WRONLY | O_CREAT | O_TRUNC, DEFFILEMODE);
if (f >= 0) {
if (safe_write(f, &Index, sizeof(Index)) < 0)
LOG_ERROR_STR(fileName);
close(f);
return true;
}
}
return false;
}
void cResumeFile::Delete(void)
{
if (fileName) {
if (remove(fileName) < 0 && errno != ENOENT)
LOG_ERROR_STR(fileName);
}
}
// --- cRecordingInfo --------------------------------------------------------
cRecordingInfo::cRecordingInfo(tChannelID ChannelID, const cEvent *Event)
{
channelID = ChannelID;
if (Event) {
event = Event;
ownEvent = NULL;
}
else
event = ownEvent = new cEvent(0);
}
cRecordingInfo::~cRecordingInfo()
{
delete ownEvent;
}
void cRecordingInfo::SetData(const char *Title, const char *ShortText, const char *Description)
{
if (!isempty(Title))
((cEvent *)event)->SetTitle(Title);
if (!isempty(ShortText))
((cEvent *)event)->SetShortText(ShortText);
if (!isempty(Description))
((cEvent *)event)->SetDescription(Description);
}
bool cRecordingInfo::Read(FILE *f)
{
if (ownEvent) {
cReadLine ReadLine;
char *s;
while ((s = ReadLine.Read(f)) != NULL) {
char *t = skipspace(s + 1);
switch (*s) {
case 'C': {
char *p = strchr(t, ' ');
if (p)
*p = 0; // strips optional channel name
if (*t)
channelID = tChannelID::FromString(t);
}
break;
default: if (!ownEvent->Parse(s))
return false;
break;
}
}
return true;
}
return false;
}
bool cRecordingInfo::Write(FILE *f, const char *Prefix) const
{
if (channelID.Valid())
fprintf(f, "%sC %s\n", Prefix, *channelID.ToString());
event->Dump(f, Prefix, true);
return true;
}
// --- cRecording ------------------------------------------------------------
#define RESUME_NOT_INITIALIZED (-2)
struct tCharExchange { char a; char b; };
tCharExchange CharExchange[] = {
{ '~', '/' },
{ ' ', '_' },
{ '\'', '\x01' },
{ '/', '\x02' },
{ 0, 0 }
};
static char *ExchangeChars(char *s, bool ToFileSystem)
{
char *p = s;
while (*p) {
#ifdef VFAT
// The VFAT file system can't handle all characters, so we
// have to take extra efforts to encode/decode them:
if (ToFileSystem) {
switch (*p) {
// characters that can be used "as is":
case '!':
case '@':
case '$':
case '%':
case '&':
case '(':
case ')':
case '+':
case ',':
case '-':
case ';':
case '=':
case '0' ... '9':
case 'a' ... 'z':
case 'A' ... 'Z':
case '<EFBFBD>': case '<EFBFBD>':
case '<EFBFBD>': case '<EFBFBD>':
case '<EFBFBD>': case '<EFBFBD>':
case '<EFBFBD>':
break;
// characters that can be mapped to other characters:
case ' ': *p = '_'; break;
case '~': *p = '/'; break;
// characters that have to be encoded:
default:
if (*p != '.' || !*(p + 1) || *(p + 1) == '~') { // Windows can't handle '.' at the end of directory names
int l = p - s;
s = (char *)realloc(s, strlen(s) + 10);
p = s + l;
char buf[4];
sprintf(buf, "#%02X", (unsigned char)*p);
memmove(p + 2, p, strlen(p) + 1);
strncpy(p, buf, 3);
p += 2;
}
}
}
else {
switch (*p) {
// mapped characters:
case '_': *p = ' '; break;
case '/': *p = '~'; break;
// encodes characters:
case '#': {
if (strlen(p) > 2) {
char buf[3];
sprintf(buf, "%c%c", *(p + 1), *(p + 2));
unsigned char c = strtol(buf, NULL, 16);
*p = c;
memmove(p + 1, p + 3, strlen(p) - 2);
}
}
break;
// backwards compatibility:
case '\x01': *p = '\''; break;
case '\x02': *p = '/'; break;
case '\x03': *p = ':'; break;
}
}
#else
for (struct tCharExchange *ce = CharExchange; ce->a && ce->b; ce++) {
if (*p == (ToFileSystem ? ce->a : ce->b)) {
*p = ToFileSystem ? ce->b : ce->a;
break;
}
}
#endif
p++;
}
return s;
}
cRecording::cRecording(cTimer *Timer, const cEvent *Event)
{
resume = RESUME_NOT_INITIALIZED;
titleBuffer = NULL;
sortBuffer = NULL;
fileName = NULL;
name = NULL;
// set up the actual name:
const char *Title = Event ? Event->Title() : NULL;
const char *Subtitle = Event ? Event->ShortText() : NULL;
char SubtitleBuffer[MAX_SUBTITLE_LENGTH];
if (isempty(Title))
Title = Timer->Channel()->Name();
if (isempty(Subtitle))
Subtitle = " ";
else if (strlen(Subtitle) > MAX_SUBTITLE_LENGTH) {
// let's make sure the Subtitle doesn't produce too long a file name:
strn0cpy(SubtitleBuffer, Subtitle, MAX_SUBTITLE_LENGTH);
Subtitle = SubtitleBuffer;
}
char *macroTITLE = strstr(Timer->File(), TIMERMACRO_TITLE);
char *macroEPISODE = strstr(Timer->File(), TIMERMACRO_EPISODE);
if (macroTITLE || macroEPISODE) {
name = strdup(Timer->File());
name = strreplace(name, TIMERMACRO_TITLE, Title);
name = strreplace(name, TIMERMACRO_EPISODE, Subtitle);
// avoid blanks at the end:
int l = strlen(name);
while (l-- > 2) {
if (name[l] == ' ' && name[l - 1] != '~')
name[l] = 0;
else
break;
}
if (Timer->IsSingleEvent()) {
Timer->SetFile(name); // this was an instant recording, so let's set the actual data
Timers.SetModified();
}
}
else if (Timer->IsSingleEvent() || !Setup.UseSubtitle)
name = strdup(Timer->File());
else
asprintf(&name, "%s~%s", Timer->File(), Subtitle);
// substitute characters that would cause problems in file names:
strreplace(name, '\n', ' ');
start = Timer->StartTime();
priority = Timer->Priority();
lifetime = Timer->Lifetime();
// handle info:
info = new cRecordingInfo(Timer->Channel()->GetChannelID(), Event);
// this is a somewhat ugly hack to get the 'summary' information from the
// timer into the recording info, but it saves us from having to actually
// copy the entire event data:
if (!isempty(Timer->Summary()))
info->SetData(isempty(info->Title()) ? Timer->File() : NULL, NULL, Timer->Summary());
}
cRecording::cRecording(const char *FileName)
{
resume = RESUME_NOT_INITIALIZED;
titleBuffer = NULL;
sortBuffer = NULL;
fileName = strdup(FileName);
FileName += strlen(VideoDirectory) + 1;
char *p = strrchr(FileName, '/');
name = NULL;
info = new cRecordingInfo;
if (p) {
time_t now = time(NULL);
struct tm tm_r;
struct tm t = *localtime_r(&now, &tm_r); // this initializes the time zone in 't'
t.tm_isdst = -1; // makes sure mktime() will determine the correct DST setting
if (7 == sscanf(p + 1, DATAFORMAT, &t.tm_year, &t.tm_mon, &t.tm_mday, &t.tm_hour, &t.tm_min, &priority, &lifetime)) {
t.tm_year -= 1900;
t.tm_mon--;
t.tm_sec = 0;
start = mktime(&t);
name = MALLOC(char, p - FileName + 1);
strncpy(name, FileName, p - FileName);
name[p - FileName] = 0;
name = ExchangeChars(name, false);
}
// read an optional info file:
char *InfoFileName = NULL;
asprintf(&InfoFileName, "%s%s", fileName, INFOFILESUFFIX);
FILE *f = fopen(InfoFileName, "r");
if (f) {
info->Read(f);
fclose(f);
}
else if (errno != ENOENT)
LOG_ERROR_STR(InfoFileName);
free(InfoFileName);
#ifdef SUMMARYFALLBACK
// fall back to the old 'summary.vdr' if there was no 'info.vdr':
if (isempty(info->Title())) {
char *SummaryFileName = NULL;
asprintf(&SummaryFileName, "%s%s", fileName, SUMMARYFILESUFFIX);
FILE *f = fopen(SummaryFileName, "r");
if (f) {
int line = 0;
char *data[3] = { NULL };
cReadLine ReadLine;
char *s;
while ((s = ReadLine.Read(f)) != NULL) {
if (*s || line > 1) {
if (data[line]) {
int len = strlen(s);
len += strlen(data[line]) + 1;
data[line] = (char *)realloc(data[line], len + 1);
strcat(data[line], "\n");
strcat(data[line], s);
}
else
data[line] = strdup(s);
}
else
line++;
}
fclose(f);
if (line == 1) {
data[2] = data[1];
data[1] = NULL;
}
info->SetData(data[0], data[1], data[2]);
for (int i = 0; i < 3; i ++)
free(data[i]);
}
else if (errno != ENOENT)
LOG_ERROR_STR(SummaryFileName);
free(SummaryFileName);
}
#endif
}
}
cRecording::~cRecording()
{
free(titleBuffer);
free(sortBuffer);
free(fileName);
free(name);
delete info;
}
char *cRecording::StripEpisodeName(char *s)
{
char *t = s, *s1 = NULL, *s2 = NULL;
while (*t) {
if (*t == '/') {
if (s1) {
if (s2)
s1 = s2;
s2 = t;
}
else
s1 = t;
}
t++;
}
if (s1 && s2)
memmove(s1 + 1, s2, t - s2 + 1);
return s;
}
char *cRecording::SortName(void) const
{
if (!sortBuffer) {
char *s = StripEpisodeName(strdup(FileName() + strlen(VideoDirectory) + 1));
int l = strxfrm(NULL, s, 0) + 1;
sortBuffer = MALLOC(char, l);
strxfrm(sortBuffer, s, l);
free(s);
}
return sortBuffer;
}
int cRecording::GetResume(void) const
{
if (resume == RESUME_NOT_INITIALIZED) {
cResumeFile ResumeFile(FileName());
resume = ResumeFile.Read();
}
return resume;
}
int cRecording::Compare(const cListObject &ListObject) const
{
cRecording *r = (cRecording *)&ListObject;
return strcasecmp(SortName(), r->SortName());
}
const char *cRecording::FileName(void) const
{
if (!fileName) {
struct tm tm_r;
struct tm *t = localtime_r(&start, &tm_r);
name = ExchangeChars(name, true);
asprintf(&fileName, NAMEFORMAT, VideoDirectory, name, t->tm_year + 1900, t->tm_mon + 1, t->tm_mday, t->tm_hour, t->tm_min, priority, lifetime);
name = ExchangeChars(name, false);
}
return fileName;
}
const char *cRecording::Title(char Delimiter, bool NewIndicator, int Level) const
{
char New = NewIndicator && IsNew() ? '*' : ' ';
free(titleBuffer);
titleBuffer = NULL;
if (Level < 0 || Level == HierarchyLevels()) {
struct tm tm_r;
struct tm *t = localtime_r(&start, &tm_r);
char *s;
if (Level > 0 && (s = strrchr(name, '~')) != NULL)
s++;
else
s = name;
asprintf(&titleBuffer, "%02d.%02d.%02d%c%02d:%02d%c%c%s",
t->tm_mday,
t->tm_mon + 1,
t->tm_year % 100,
Delimiter,
t->tm_hour,
t->tm_min,
New,
Delimiter,
s);
// let's not display a trailing '~':
if (!NewIndicator)
stripspace(titleBuffer);
s = &titleBuffer[strlen(titleBuffer) - 1];
if (*s == '~')
*s = 0;
}
else if (Level < HierarchyLevels()) {
const char *s = name;
const char *p = s;
while (*++s) {
if (*s == '~') {
if (Level--)
p = s + 1;
else
break;
}
}
titleBuffer = MALLOC(char, s - p + 3);
*titleBuffer = Delimiter;
*(titleBuffer + 1) = Delimiter;
strn0cpy(titleBuffer + 2, p, s - p + 1);
}
else
return "";
return titleBuffer;
}
const char *cRecording::PrefixFileName(char Prefix)
{
cString p = PrefixVideoFileName(FileName(), Prefix);
if (*p) {
free(fileName);
fileName = strdup(p);
return fileName;
}
return NULL;
}
int cRecording::HierarchyLevels(void) const
{
const char *s = name;
int level = 0;
while (*++s) {
if (*s == '~')
level++;
}
return level;
}
bool cRecording::IsEdited(void) const
{
const char *s = strrchr(name, '~');
s = !s ? name : s + 1;
return *s == '%';
}
bool cRecording::WriteInfo(void)
{
char *InfoFileName = NULL;
asprintf(&InfoFileName, "%s%s", fileName, INFOFILESUFFIX);
FILE *f = fopen(InfoFileName, "w");
if (f) {
info->Write(f);
fclose(f);
}
else
LOG_ERROR_STR(InfoFileName);
free(InfoFileName);
return true;
}
bool cRecording::Delete(void)
{
bool result = true;
char *NewName = strdup(FileName());
char *ext = strrchr(NewName, '.');
if (strcmp(ext, RECEXT) == 0) {
strncpy(ext, DELEXT, strlen(ext));
if (access(NewName, F_OK) == 0) {
// the new name already exists, so let's remove that one first:
isyslog("removing recording %s", NewName);
RemoveVideoFile(NewName);
}
isyslog("deleting recording %s", FileName());
result = RenameVideoFile(FileName(), NewName);
}
free(NewName);
return result;
}
bool cRecording::Remove(void)
{
// let's do a final safety check here:
if (!endswith(FileName(), DELEXT)) {
esyslog("attempt to remove recording %s", FileName());
return false;
}
isyslog("removing recording %s", FileName());
return RemoveVideoFile(FileName());
}
// --- cRecordings -----------------------------------------------------------
cRecordings Recordings;
cRecordings::cRecordings(bool Deleted)
{
deleted = Deleted;
lastUpdate = 0;
}
void cRecordings::ScanVideoDir(const char *DirName)
{
cReadDir d(DirName);
struct dirent *e;
while ((e = d.Next()) != NULL) {
if (strcmp(e->d_name, ".") && strcmp(e->d_name, "..")) {
char *buffer;
asprintf(&buffer, "%s/%s", DirName, e->d_name);
struct stat st;
if (stat(buffer, &st) == 0) {
if (S_ISLNK(st.st_mode)) {
char *old = buffer;
buffer = ReadLink(old);
free(old);
if (!buffer)
continue;
if (stat(buffer, &st) != 0) {
free(buffer);
continue;
}
}
if (S_ISDIR(st.st_mode)) {
if (endswith(buffer, deleted ? DELEXT : RECEXT)) {
cRecording *r = new cRecording(buffer);
if (r->Name())
Add(r);
else
delete r;
}
else
ScanVideoDir(buffer);
}
}
free(buffer);
}
}
}
bool cRecordings::NeedsUpdate(void)
{
return lastUpdate <= LastModifiedTime(AddDirectory(VideoDirectory, ".update"));
}
bool cRecordings::Load(void)
{
lastUpdate = time(NULL); // doing this first to make sure we don't miss anything
Clear();
ScanVideoDir(VideoDirectory);
Sort();
return Count() > 0;
}
cRecording *cRecordings::GetByName(const char *FileName)
{
for (cRecording *recording = First(); recording; recording = Next(recording)) {
if (strcmp(recording->FileName(), FileName) == 0)
return recording;
}
return NULL;
}
void cRecordings::AddByName(const char *FileName)
{
cRecording *recording = GetByName(FileName);
if (!recording) {
recording = new cRecording(FileName);
Add(recording);
}
}
void cRecordings::DelByName(const char *FileName)
{
cRecording *recording = GetByName(FileName);
if (recording)
Del(recording);
}
// --- cMark -----------------------------------------------------------------
cMark::cMark(int Position, const char *Comment)
{
position = Position;
comment = Comment ? strdup(Comment) : NULL;
}
cMark::~cMark()
{
free(comment);
}
cString cMark::ToText(void)
{
char *buffer;
asprintf(&buffer, "%s%s%s\n", *IndexToHMSF(position, true), comment ? " " : "", comment ? comment : "");
return cString(buffer, true);
}
bool cMark::Parse(const char *s)
{
free(comment);
comment = NULL;
position = HMSFToIndex(s);
const char *p = strchr(s, ' ');
if (p) {
p = skipspace(p);
if (*p)
comment = strdup(p);
}
return true;
}
bool cMark::Save(FILE *f)
{
return fprintf(f, ToText()) > 0;
}
// --- cMarks ----------------------------------------------------------------
bool cMarks::Load(const char *RecordingFileName)
{
if (cConfig<cMark>::Load(AddDirectory(RecordingFileName, MARKSFILESUFFIX))) {
Sort();
return true;
}
return false;
}
void cMarks::Sort(void)
{
for (cMark *m1 = First(); m1; m1 = Next(m1)) {
for (cMark *m2 = Next(m1); m2; m2 = Next(m2)) {
if (m2->position < m1->position) {
swap(m1->position, m2->position);
swap(m1->comment, m2->comment);
}
}
}
}
cMark *cMarks::Add(int Position)
{
cMark *m = Get(Position);
if (!m) {
cConfig<cMark>::Add(m = new cMark(Position));
Sort();
}
return m;
}
cMark *cMarks::Get(int Position)
{
for (cMark *mi = First(); mi; mi = Next(mi)) {
if (mi->position == Position)
return mi;
}
return NULL;
}
cMark *cMarks::GetPrev(int Position)
{
for (cMark *mi = Last(); mi; mi = Prev(mi)) {
if (mi->position < Position)
return mi;
}
return NULL;
}
cMark *cMarks::GetNext(int Position)
{
for (cMark *mi = First(); mi; mi = Next(mi)) {
if (mi->position > Position)
return mi;
}
return NULL;
}
// --- cRecordingUserCommand -------------------------------------------------
const char *cRecordingUserCommand::command = NULL;
void cRecordingUserCommand::InvokeCommand(const char *State, const char *RecordingFileName)
{
if (command) {
char *cmd;
asprintf(&cmd, "%s %s \"%s\"", command, State, *strescape(RecordingFileName, "\"$"));
isyslog("executing '%s'", cmd);
SystemExec(cmd);
free(cmd);
}
}
// --- XXX+
//XXX+ somewhere else???
// --- cIndexFile ------------------------------------------------------------
#define INDEXFILESUFFIX "/index.vdr"
// The number of frames to stay off the end in case of time shift:
#define INDEXSAFETYLIMIT 150 // 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
cIndexFile::cIndexFile(const char *FileName, bool Record)
:resumeFile(FileName)
{
f = -1;
fileName = NULL;
size = 0;
last = -1;
index = NULL;
if (FileName) {
fileName = MALLOC(char, strlen(FileName) + strlen(INDEXFILESUFFIX) + 1);
if (fileName) {
strcpy(fileName, FileName);
char *pFileExt = fileName + strlen(fileName);
strcpy(pFileExt, INDEXFILESUFFIX);
int delta = 0;
if (access(fileName, R_OK) == 0) {
struct stat buf;
if (stat(fileName, &buf) == 0) {
delta = buf.st_size % sizeof(tIndex);
if (delta) {
delta = sizeof(tIndex) - delta;
esyslog("ERROR: invalid file size (%ld) in '%s'", buf.st_size, fileName);
}
last = (buf.st_size + delta) / sizeof(tIndex) - 1;
if (!Record && last >= 0) {
size = last + 1;
index = MALLOC(tIndex, size);
if (index) {
f = open(fileName, O_RDONLY);
if (f >= 0) {
if ((int)safe_read(f, index, buf.st_size) != buf.st_size) {
esyslog("ERROR: can't read from file '%s'", fileName);
free(index);
index = NULL;
close(f);
f = -1;
}
// we don't close f here, see CatchUp()!
}
else
LOG_ERROR_STR(fileName);
}
else
esyslog("ERROR: can't allocate %d bytes for index '%s'", size * sizeof(tIndex), fileName);
}
}
else
LOG_ERROR;
}
else if (!Record)
isyslog("missing index file %s", fileName);
if (Record) {
if ((f = open(fileName, O_WRONLY | O_CREAT | O_APPEND, DEFFILEMODE)) >= 0) {
if (delta) {
esyslog("ERROR: padding index file with %d '0' bytes", delta);
while (delta--)
writechar(f, 0);
}
}
else
LOG_ERROR_STR(fileName);
}
}
else
esyslog("ERROR: can't copy file name '%s'", FileName);
}
}
cIndexFile::~cIndexFile()
{
if (f >= 0)
close(f);
free(fileName);
free(index);
}
bool cIndexFile::CatchUp(int Index)
{
// returns true unless something really goes wrong, so that 'index' becomes NULL
if (index && f >= 0) {
cMutexLock MutexLock(&mutex);
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;
cCondWait::SleepMs(1000);
}
}
return index != NULL;
}
bool cIndexFile::Write(uchar PictureType, uchar FileNumber, int FileOffset)
{
if (f >= 0) {
tIndex i = { FileOffset, PictureType, FileNumber, 0 };
if (safe_write(f, &i, sizeof(i)) < 0) {
LOG_ERROR_STR(fileName);
close(f);
f = -1;
return false;
}
last++;
}
return f >= 0;
}
bool cIndexFile::Get(int Index, uchar *FileNumber, int *FileOffset, uchar *PictureType, int *Length)
{
if (CatchUp(Index)) {
if (Index >= 0 && Index < last) {
*FileNumber = index[Index].number;
*FileOffset = index[Index].offset;
if (PictureType)
*PictureType = index[Index].type;
if (Length) {
int fn = index[Index + 1].number;
int fo = index[Index + 1].offset;
if (fn == *FileNumber)
*Length = fo - *FileOffset;
else
*Length = -1; // this means "everything up to EOF" (the buffer's Read function will act accordingly)
}
return true;
}
}
return false;
}
int cIndexFile::GetNextIFrame(int Index, bool Forward, uchar *FileNumber, int *FileOffset, int *Length, bool StayOffEnd)
{
if (CatchUp()) {
int d = Forward ? 1 : -1;
for (;;) {
Index += d;
if (Index >= 0 && Index < last - ((Forward && StayOffEnd) ? INDEXSAFETYLIMIT : 0)) {
if (index[Index].type == I_FRAME) {
if (FileNumber)
*FileNumber = index[Index].number;
else
FileNumber = &index[Index].number;
if (FileOffset)
*FileOffset = index[Index].offset;
else
FileOffset = &index[Index].offset;
if (Length) {
// all recordings end with a non-I_FRAME, so the following should be safe:
int fn = index[Index + 1].number;
int fo = index[Index + 1].offset;
if (fn == *FileNumber)
*Length = fo - *FileOffset;
else {
esyslog("ERROR: 'I' frame at end of file #%d", *FileNumber);
*Length = -1;
}
}
return Index;
}
}
else
break;
}
}
return -1;
}
int cIndexFile::Get(uchar FileNumber, int FileOffset)
{
if (CatchUp()) {
//TODO implement binary search!
int i;
for (i = 0; i < last; i++) {
if (index[i].number > FileNumber || (index[i].number == FileNumber) && index[i].offset >= FileOffset)
break;
}
return i;
}
return -1;
}
// --- cFileName -------------------------------------------------------------
#include <errno.h>
#include <unistd.h>
#include "videodir.h"
#define MAXFILESPERRECORDING 255
#define RECORDFILESUFFIX "/%03d.vdr"
#define RECORDFILESUFFIXLEN 20 // some additional bytes for safety...
cFileName::cFileName(const char *FileName, bool Record, bool Blocking)
{
file = -1;
fileNumber = 0;
record = Record;
blocking = Blocking;
// Prepare the file name:
fileName = MALLOC(char, strlen(FileName) + RECORDFILESUFFIXLEN);
if (!fileName) {
esyslog("ERROR: can't copy file name '%s'", fileName);
return;
}
strcpy(fileName, FileName);
pFileNumber = fileName + strlen(fileName);
SetOffset(1);
}
cFileName::~cFileName()
{
Close();
free(fileName);
}
int cFileName::Open(void)
{
if (file < 0) {
int BlockingFlag = blocking ? 0 : O_NONBLOCK;
if (record) {
dsyslog("recording to '%s'", fileName);
file = OpenVideoFile(fileName, O_RDWR | O_CREAT | BlockingFlag);
if (file < 0)
LOG_ERROR_STR(fileName);
}
else {
if (access(fileName, R_OK) == 0) {
dsyslog("playing '%s'", fileName);
file = open(fileName, O_RDONLY | BlockingFlag);
if (file < 0)
LOG_ERROR_STR(fileName);
}
else if (errno != ENOENT)
LOG_ERROR_STR(fileName);
}
}
return file;
}
void cFileName::Close(void)
{
if (file >= 0) {
if ((record && CloseVideoFile(file) < 0) || (!record && close(file) < 0))
LOG_ERROR_STR(fileName);
file = -1;
}
}
int cFileName::SetOffset(int Number, int Offset)
{
if (fileNumber != Number)
Close();
if (0 < Number && Number <= MAXFILESPERRECORDING) {
fileNumber = Number;
sprintf(pFileNumber, RECORDFILESUFFIX, fileNumber);
if (record) {
if (access(fileName, F_OK) == 0) {
// files exists, check if it has non-zero size
struct stat buf;
if (stat(fileName, &buf) == 0) {
if (buf.st_size != 0)
return SetOffset(Number + 1); // file exists and has non zero size, let's try next suffix
else {
// zero size file, remove it
dsyslog ("cFileName::SetOffset: removing zero-sized file %s\n", fileName);
unlink (fileName);
}
}
else
return SetOffset(Number + 1); // error with fstat - should not happen, just to be on the safe side
}
else if (errno != ENOENT) { // something serious has happened
LOG_ERROR_STR(fileName);
return -1;
}
// found a non existing file suffix
}
if (Open() >= 0) {
if (!record && Offset >= 0 && lseek(file, Offset, SEEK_SET) != Offset) {
LOG_ERROR_STR(fileName);
return -1;
}
}
return file;
}
esyslog("ERROR: max number of files (%d) exceeded", MAXFILESPERRECORDING);
return -1;
}
int cFileName::NextFile(void)
{
return SetOffset(fileNumber + 1);
}
// --- Index stuff -----------------------------------------------------------
cString IndexToHMSF(int Index, bool WithFrame)
{
char buffer[16];
int f = (Index % FRAMESPERSEC) + 1;
int s = (Index / FRAMESPERSEC);
int m = s / 60 % 60;
int h = s / 3600;
s %= 60;
snprintf(buffer, sizeof(buffer), WithFrame ? "%d:%02d:%02d.%02d" : "%d:%02d:%02d", h, m, s, f);
return buffer;
}
int HMSFToIndex(const char *HMSF)
{
int h, m, s, f = 0;
if (3 <= sscanf(HMSF, "%d:%d:%d.%d", &h, &m, &s, &f))
return (h * 3600 + m * 60 + s) * FRAMESPERSEC + f - 1;
return 0;
}
int SecondsToFrames(int Seconds)
{
return Seconds * FRAMESPERSEC;
}
// --- ReadFrame -------------------------------------------------------------
int ReadFrame(int f, uchar *b, int Length, int Max)
{
if (Length == -1)
Length = Max; // this means we read up to EOF (see cIndex)
else if (Length > Max) {
esyslog("ERROR: frame larger than buffer (%d > %d)", Length, Max);
Length = Max;
}
int r = safe_read(f, b, Length);
if (r < 0)
LOG_ERROR;
return r;
}
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