diff options
Diffstat (limited to 'drivers/media/dvb/ngene/ngene-dvb.c')
| -rw-r--r-- | drivers/media/dvb/ngene/ngene-dvb.c | 46 |
1 files changed, 38 insertions, 8 deletions
diff --git a/drivers/media/dvb/ngene/ngene-dvb.c b/drivers/media/dvb/ngene/ngene-dvb.c index 0b4943233166..fcb16a615aab 100644 --- a/drivers/media/dvb/ngene/ngene-dvb.c +++ b/drivers/media/dvb/ngene/ngene-dvb.c @@ -118,6 +118,16 @@ static void swap_buffer(u32 *p, u32 len) } } +/* start of filler packet */ +static u8 fill_ts[] = { 0x47, 0x1f, 0xff, 0x10, TS_FILLER }; + +/* #define DEBUG_CI_XFER */ +#ifdef DEBUG_CI_XFER +static u32 ok; +static u32 overflow; +static u32 stripped; +#endif + void *tsin_exchange(void *priv, void *buf, u32 len, u32 clock, u32 flags) { struct ngene_channel *chan = priv; @@ -126,21 +136,41 @@ void *tsin_exchange(void *priv, void *buf, u32 len, u32 clock, u32 flags) if (flags & DF_SWAP32) swap_buffer(buf, len); + if (dev->ci.en && chan->number == 2) { - if (dvb_ringbuffer_free(&dev->tsin_rbuf) > len) { - dvb_ringbuffer_write(&dev->tsin_rbuf, buf, len); - wake_up_interruptible(&dev->tsin_rbuf.queue); + while (len >= 188) { + if (memcmp(buf, fill_ts, sizeof fill_ts) != 0) { + if (dvb_ringbuffer_free(&dev->tsin_rbuf) >= 188) { + dvb_ringbuffer_write(&dev->tsin_rbuf, buf, 188); + wake_up(&dev->tsin_rbuf.queue); +#ifdef DEBUG_CI_XFER + ok++; +#endif + } +#ifdef DEBUG_CI_XFER + else + overflow++; +#endif + } +#ifdef DEBUG_CI_XFER + else + stripped++; + + if (ok % 100 == 0 && overflow) + printk(KERN_WARNING "%s: ok %u overflow %u dropped %u\n", __func__, ok, overflow, stripped); +#endif + buf += 188; + len -= 188; } - return 0; + return NULL; } - if (chan->users > 0) { + + if (chan->users > 0) dvb_dmx_swfilter(&chan->demux, buf, len); - } + return NULL; } -u8 fill_ts[188] = { 0x47, 0x1f, 0xff, 0x10 }; - void *tsout_exchange(void *priv, void *buf, u32 len, u32 clock, u32 flags) { struct ngene_channel *chan = priv; |