diff options
Diffstat (limited to 'ttxtsubsdisplay.c')
| -rw-r--r-- | ttxtsubsdisplay.c | 39 |
1 files changed, 28 insertions, 11 deletions
diff --git a/ttxtsubsdisplay.c b/ttxtsubsdisplay.c index c986818..96d3c72 100644 --- a/ttxtsubsdisplay.c +++ b/ttxtsubsdisplay.c @@ -104,7 +104,8 @@ cTtxtSubsDisplay::cTtxtSubsDisplay(void) _doDisplay(1), _osd(NULL), _osdLock(), - _lastDataTime(NULL) + _lastDataTime(NULL), + _pageChanged(true) { memset(&_page.data, 0, sizeof(_page.data)); _lastDataTime = (struct timeval *) calloc(1, sizeof(*_lastDataTime)); @@ -182,8 +183,12 @@ void cTtxtSubsDisplay::TtxtData(const uint8_t *Data, uint64_t sched_time) if ((tv.tv_usec - _lastDataTime->tv_usec) > 500000) { _pageState = interimshow; - ClearOSD(); - ShowOSD(); + if (_pageChanged) + { + ClearOSD(); + ShowOSD(); + _pageChanged = false; + } } } @@ -209,8 +214,12 @@ void cTtxtSubsDisplay::TtxtData(const uint8_t *Data, uint64_t sched_time) if (_pageState == collecting) { _pageState = finished; - ClearOSD(); - ShowOSD(); + if (_pageChanged) + { + ClearOSD(); + ShowOSD(); + _pageChanged = false; + } } if (_pageState == interimshow) _pageState = finished; @@ -220,16 +229,17 @@ void cTtxtSubsDisplay::TtxtData(const uint8_t *Data, uint64_t sched_time) if (mag == _mag && no == _no) { + if (fi[3] & 0x80) // Erase Page + { + memset(&_page, 0, sizeof(_page)); + _page.flags |= erasepage; + } + _page.mag = mag; _page.no = no; _page.flags = 0; _page.national_charset = 0; - if (fi[3] & 0x80) // Erase Page - { - _page.flags |= erasepage; - memset(&_page.data, 0, sizeof(_page.data)); // only if erasepage is set? - } if (fi[5] & 0x20) // Newsflash _page.flags |= newsflash; if (fi[5] & 0x80) // Subtitle @@ -265,7 +275,14 @@ void cTtxtSubsDisplay::TtxtData(const uint8_t *Data, uint64_t sched_time) // mag == _page.mag: The magazines can be sent interleaved int i; for (i = 0; i < 40; i++) - _page.data[packet][i] = invtab[d->data[i]]; + { + unsigned char c = invtab[d->data[i]]; + if (c != _page.data[packet][i]) + { + _page.data[packet][i] = c; + _pageChanged = true; + } + } _pageState = collecting; gettimeofday(_lastDataTime, NULL); |