diff options
author | Mauro Carvalho Chehab <mchehab@brturbo.com.br> | 2005-09-10 00:03:37 +0400 |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-09-10 00:57:49 +0400 |
commit | 793cf9e6a54c698e109a599c8b8e303658fcaae6 (patch) | |
tree | 522a88bad46df318b04888bad91c49504d3565eb /drivers/media/common | |
parent | a1938038dd7e4188a8663e49242fa77dd2adb7ed (diff) | |
download | linux-793cf9e6a54c698e109a599c8b8e303658fcaae6.tar.xz |
[PATCH] v4l: common part Updates and tuner additions
- Remove $Id CVS logs for V4L files
- Included newer cards.
- Added a new NEC protocol for ir based on pulse distance.
- Enable ATSC support for DViCO FusionHDTV5 Gold.
- Added tuner LG NTSC (TALN mini series).
- Fixed tea5767 autodetection.
- Resolve more tuner types.
- Commented debug function removed from mainstream.
- Remove comments from mainstream. Still on development tree.
- linux/version dependencies removed.
- BTSC Lang1 now is set to auto_stereo mode.
- New tuner standby API.
- i2c-core.c uses hexadecimal for the i2c address, so it should stay consistent.
Signed-off-by: Uli Luckas <luckas@musoft.de>
Signed-off-by: Mac Michaels <wmichaels1@earthlink.net>
Signed-off-by: Michael Krufky <mkrufky@m1k.net>
Signed-off-by: Hermann Pitton <hermann.pitton@onlinehome.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/media/common')
-rw-r--r-- | drivers/media/common/ir-common.c | 68 |
1 files changed, 67 insertions, 1 deletions
diff --git a/drivers/media/common/ir-common.c b/drivers/media/common/ir-common.c index ab7a1fba4427..a0e700d7a4a4 100644 --- a/drivers/media/common/ir-common.c +++ b/drivers/media/common/ir-common.c @@ -1,5 +1,4 @@ /* - * $Id: ir-common.c,v 1.11 2005/07/07 14:44:43 mchehab Exp $ * * some common structs and functions to handle infrared remotes via * input layer ... @@ -335,6 +334,72 @@ int ir_dump_samples(u32 *samples, int count) return 0; } +/* decode raw samples, pulse distance coding used by NEC remotes */ +int ir_decode_pulsedistance(u32 *samples, int count, int low, int high) +{ + int i,last,bit,len; + u32 curBit; + u32 value; + + /* find start burst */ + for (i = len = 0; i < count * 32; i++) { + bit = getbit(samples,i); + if (bit) { + len++; + } else { + if (len >= 29) + break; + len = 0; + } + } + + /* start burst to short */ + if (len < 29) + return 0xffffffff; + + /* find start silence */ + for (len = 0; i < count * 32; i++) { + bit = getbit(samples,i); + if (bit) { + break; + } else { + len++; + } + } + + /* silence to short */ + if (len < 7) + return 0xffffffff; + + /* go decoding */ + len = 0; + last = 1; + value = 0; curBit = 1; + for (; i < count * 32; i++) { + bit = getbit(samples,i); + if (last) { + if(bit) { + continue; + } else { + len = 1; + } + } else { + if (bit) { + if (len > (low + high) /2) + value |= curBit; + curBit <<= 1; + if (curBit == 1) + break; + } else { + len++; + } + } + last = bit; + } + + return value; +} + /* decode raw samples, biphase coding, used by rc5 for example */ int ir_decode_biphase(u32 *samples, int count, int low, int high) { @@ -383,6 +448,7 @@ EXPORT_SYMBOL_GPL(ir_input_keydown); EXPORT_SYMBOL_GPL(ir_extract_bits); EXPORT_SYMBOL_GPL(ir_dump_samples); EXPORT_SYMBOL_GPL(ir_decode_biphase); +EXPORT_SYMBOL_GPL(ir_decode_pulsedistance); /* * Local variables: |