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spark: fix TODO in cVideo::ShowPicture()

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rebuild the MPEG stillpicture if the source jpeg has changed
additionally check for zero sized m2v from broken ffmpeg versions
This commit is contained in:
Stefan Seyfried
2012-02-25 14:54:45 +01:00
parent c9ff86fd77
commit ee1a408f9b
1 changed files with 14 additions and 6 deletions
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20
libspark/video.cpp
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@@ -22,6 +22,7 @@
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <utime.h>
#include <cstring>
#include <cstdio>
@@ -333,10 +334,14 @@ void cVideo::ShowPicture(const char * fname)
char destname[512];
char cmd[512];
char *p;
unsigned char *data;
int mfd;
struct stat st;
struct stat st, st2;
strcpy(destname, "/var/cache");
if (stat(fname, &st2))
{
lt_info("%s: could not stat %s (%m)\n", __func__, fname);
return;
}
mkdir(destname, 0755);
/* the cache filename is (example for /share/tuxbox/neutrino/icons/radiomode.jpg):
/var/cache/share.tuxbox.neutrino.icons.radiomode.jpg.m2v
@@ -347,14 +352,17 @@ void cVideo::ShowPicture(const char * fname)
while ((p = strchr(p, '/')) != NULL)
*p = '.';
strcat(destname, ".m2v");
/* ...then check if it exists already...
TODO: check if the cache file is older than the jpeg file... */
if (access(destname, R_OK))
/* ...then check if it exists already... */
if (stat(destname, &st) || (st.st_mtime != st2.st_mtime) || (st.st_size == 0))
{
/* it does not exist, so call ffmpeg to create it... */
struct utimbuf u;
u.actime = time(NULL);
u.modtime = st2.st_mtime;
/* it does not exist or has a different date, so call ffmpeg... */
sprintf(cmd, "ffmpeg -y -f mjpeg -i '%s' -s 1280x720 '%s' </dev/null",
fname, destname);
system(cmd); /* TODO: use libavcodec to directly convert it */
utime(destname, &u);
}
mfd = open(destname, O_RDONLY);
if (mfd < 0)