/usr/share/pyshared/freevo/tv/ivtv.py is in python-freevo 1.9.2b2-4.2.
This file is owned by root:root, with mode 0o644.
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# -----------------------------------------------------------------------
# Python interface to ivtv based capture cards.
# -----------------------------------------------------------------------
# $Id: ivtv.py 11905 2011-11-14 21:54:46Z adam $
#
# Notes: http://ivtv.sf.net
# Todo:
#
# -----------------------------------------------------------------------
# Freevo - A Home Theater PC framework
# Copyright (C) 2003 Krister Lagerstrom, et al.
# Please see the file freevo/Docs/CREDITS for a complete list of authors.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of MER-
# CHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
# Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# -----------------------------------------------------------------------
import logging
logger = logging.getLogger("freevo.tv.ivtv")
import string, struct, fcntl, time
import config
import tv.v4l2
def i32(x): return (x&0x80000000L and -2*0x40000000 or 0) + int(x&0x7fffffff)
_IOC_NRBITS = 8
_IOC_TYPEBITS = 8
_IOC_SIZEBITS = 14
_IOC_DIRBITS = 2
_IOC_NRMASK = ((1 << _IOC_NRBITS)-1)
_IOC_TYPEMASK = ((1 << _IOC_TYPEBITS)-1)
_IOC_SIZEMASK = ((1 << _IOC_SIZEBITS)-1)
_IOC_DIRMASK = ((1 << _IOC_DIRBITS)-1)
_IOC_NRSHIFT = 0
_IOC_TYPESHIFT = (_IOC_NRSHIFT+_IOC_NRBITS)
_IOC_SIZESHIFT = (_IOC_TYPESHIFT+_IOC_TYPEBITS)
_IOC_DIRSHIFT = (_IOC_SIZESHIFT+_IOC_SIZEBITS)
# Direction bits.
_IOC_NONE = 0
_IOC_WRITE = 1
_IOC_READ = 2
def _IOC(dir, type, nr, size):
return (((dir) << _IOC_DIRSHIFT) | \
(ord(type) << _IOC_TYPESHIFT) | \
((nr) << _IOC_NRSHIFT) | \
((size) << _IOC_SIZESHIFT))
def _IO(type, nr): return _IOC(_IOC_NONE, (type), (nr), 0)
def _IOR(type, nr, size): return _IOC(_IOC_READ, (type), (nr), struct.calcsize(size))
def _IOW(type, nr, size): return _IOC(_IOC_WRITE, (type), (nr), struct.calcsize(size))
def _IOWR(type, nr, size): return _IOC(_IOC_READ|_IOC_WRITE, (type), (nr), struct.calcsize(size))
# used to decode ioctl numbers..
def _IOC_DIR(nr): return (((nr) >> _IOC_DIRSHIFT) & _IOC_DIRMASK)
def _IOC_TYPE(nr): return (((nr) >> _IOC_TYPESHIFT) & _IOC_TYPEMASK)
def _IOC_NR(nr): return (((nr) >> _IOC_NRSHIFT) & _IOC_NRMASK)
def _IOC_SIZE(nr): return (((nr) >> _IOC_SIZESHIFT) & _IOC_SIZEMASK)
# structs
CODEC_ST = '15I'
MSP_MATRIX_ST = '2i'
VBI_EMBED_ST = "I"
GOP_END_ST = "I"
# ioctls
# changed in ivtv-0.8.0 and higher
IVTV_IOC_G_CODEC = 0xFFEE7703
IVTV_IOC_S_CODEC = 0xFFEE7704
MSP_SET_MATRIX = 0x40086D11
GETVBI_EMBED_NO = _IOR('@', 55, VBI_EMBED_ST) #IVTV_IOC_G_VBI_EMBED
SETVBI_EMBED_NO = _IOW('@', 54, VBI_EMBED_ST) #IVTV_IOC_S_VBI_EMBED
GOP_END_NO = _IOWR('@', 50, GOP_END_ST) #IVTV_IOC_S_GOP_END used to wait for a GOP
# Stream types
IVTV_STREAM_PS = 0
IVTV_STREAM_TS = 1
IVTV_STREAM_MPEG1 = 2
IVTV_STREAM_PES_AV = 3
IVTV_STREAM_PES_V = 5
IVTV_STREAM_PES_A = 7
IVTV_STREAM_DVD = 10
class IVTV(tv.v4l2.Videodev):
def __init__(self, device):
tv.v4l2.Videodev.__init__(self, device)
def streamTypeIvtvToV4l2(self, stream_type):
map_ivtv_to_v4l2 = {
0 : 0, 1 : 3, 2 : 2, 3 : 3, 5 : 3, 7 : 3,
10 : 3, 11 : 4, 12 : 5, 13 : 3, 14 : 3
}
try:
_debug_('streamTypeIvtvToV4l2 %s -> %s' % (stream_type, map_ivtv_to_v4l2[stream_type]), 2)
return map_ivtv_to_v4l2[stream_type]
except:
_debug_('streamTypeIvtvToV4l2 %s failed' % (stream_type), DWARNING)
return 0
def streamTypeV4l2ToIVTV(self, stream_type):
map_v4l2_to_ivtv = {
0 : 0, 2 : 2, 3 : 10, 4 : 11, 5 : 12,
}
try:
_debug_('streamTypeV4l2ToIVTV %s -> %s' % (stream_type, map_v4l2_to_ivtv[stream_type]), 2)
return map_v4l2_to_ivtv[stream_type]
except:
_debug_('streamTypeV4l2ToIVTV %s failed' % (stream_type), DWARNING)
return 0
def getCodecInfo(self):
if self.version >= 0x800:
aspect = tv.v4l2.Videodev.getcontrol(self, 'Video Aspect')+1
audio_bitmask = 0
audio_bitmask |= (tv.v4l2.Videodev.getcontrol(self, 'Audio Sampling Frequency') << 0)
audio_bitmask |= (tv.v4l2.Videodev.getcontrol(self, 'Audio Layer II Bitrate') << 2)
try:
audio_bitmask |= (tv.v4l2.Videodev.getcontrol(self, 'Audio Encoding Layer') << 6)
except AttributeError, why:
audio_bitmask |= (tv.v4l2.Videodev.getcontrol(self, 'Audio Encoding') << 6)
audio_bitmask |= (tv.v4l2.Videodev.getcontrol(self, 'Audio Stereo Mode') << 8)
audio_bitmask |= (tv.v4l2.Videodev.getcontrol(self, 'Audio Stereo Mode Extension') << 10)
audio_bitmask |= (tv.v4l2.Videodev.getcontrol(self, 'Audio Emphasis') << 12)
audio_bitmask |= (tv.v4l2.Videodev.getcontrol(self, 'Audio CRC') << 14)
bframes = tv.v4l2.Videodev.getcontrol(self, 'Video B Frames')+1
bitrate_mode = tv.v4l2.Videodev.getcontrol(self, 'Video Bitrate Mode')
bitrate = tv.v4l2.Videodev.getcontrol(self, 'Video Bitrate')
bitrate_peak = tv.v4l2.Videodev.getcontrol(self, 'Video Peak Bitrate')
dnr_mode = 0
dnr_mode |= tv.v4l2.Videodev.getcontrol(self, 'Spatial Filter Mode') << 0
dnr_mode |= tv.v4l2.Videodev.getcontrol(self, 'Temporal Filter Mode') << 1
dnr_spatial = tv.v4l2.Videodev.getcontrol(self, 'Spatial Filter')
dnr_temporal = tv.v4l2.Videodev.getcontrol(self, 'Temporal Filter')
dnr_type = tv.v4l2.Videodev.getcontrol(self, 'Median Filter Type')
framerate = 0
framespergop = tv.v4l2.Videodev.getcontrol(self, 'Video GOP Size')
gop_closure = tv.v4l2.Videodev.getcontrol(self, 'Video GOP Closure')
pulldown = 0
#insert_navigation_packets = tv.v4l2.Videodev.getcontrol(self, 'insert_navigation_packets')
stream_type = self.streamTypeV4l2ToIVTV(tv.v4l2.Videodev.getcontrol(self, 'Stream Type'))
codec_list = (aspect, audio_bitmask, bframes, bitrate_mode, bitrate, bitrate_peak,
dnr_mode, dnr_spatial, dnr_temporal, dnr_type, framerate, framespergop, gop_closure,
pulldown, stream_type)
return IVTVCodec(codec_list)
val = struct.pack( CODEC_ST, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 )
r = fcntl.ioctl(self.device, i32(IVTV_IOC_G_CODEC), val)
codec_list = struct.unpack(CODEC_ST, r)
_debug_("getCodecInfo: val=%r, r=%r, res=%r" % (val, r, struct.unpack(CODEC_ST, r)), 3)
return IVTVCodec(codec_list)
def setCodecInfo(self, codec):
if self.version >= 0x800:
"""
'audio_bitmask' : 0xE9,
NOTE: doesn't quite map to firmware api
0:1 'Audio Sampling Frequency':
'00' 44.1Khz
'01' 48Khz
'10' 32Khz
'11' reserved
2:3 'Audio Encoding Layer':
'01'=Layer I
'10'=Layer II
4:7 'Audio Layer II Bitrate':
Index | Layer I | Layer II
------+-------------+------------
'0000' | free format | free format
'0001' | 32 kbit/s | 32 kbit/s
'0010' | 64 kbit/s | 48 kbit/s
'0011' | 96 kbit/s | 56 kbit/s
'0100' | 128 kbit/s | 64 kbit/s
'0101' | 160 kbit/s | 80 kbit/s
'0110' | 192 kbit/s | 96 kbit/s
'0111' | 224 kbit/s | 112 kbit/s
'1000' | 256 kbit/s | 128 kbit/s
'1001' | 288 kbit/s | 160 kbit/s
'1010' | 320 kbit/s | 192 kbit/s
'1011' | 352 kbit/s | 224 kbit/s
'1100' | 384 kbit/s | 256 kbit/s
'1101' | 416 kbit/s | 320 kbit/s
'1110' | 448 kbit/s | 384 kbit/s
Note: For Layer II, not all combinations of total bitrate
and mode are allowed. See ISO11172-3 3-Annex B, Table 3-B.2
8:9 'Audio Stereo Mode':
'00'=Stereo
'01'=JointStereo
'10'=Dual
'11'=Mono
10:11 'Audio Stereo Mode Extension' used in joint_stereo mode.
In Layer I and II they indicate which subbands are in
intensity_stereo. All other subbands are coded in stereo.
'00' subbands 4-31 in intensity_stereo, bound==4
'01' subbands 8-31 in intensity_stereo, bound==8
'10' subbands 12-31 in intensity_stereo, bound==12
'11' subbands 16-31 in intensity_stereo, bound==16
12:13 'Audio Emphasis':
'00' None
'01' 50/15uS
'10' reserved
'11' CCITT J.17
14 'Audio CRC':
'0' off
'1' on
15 'Audio Copyright': not used
'0' off
'1' on
16 'Audio Generation': not used
'0' copy
'1' original
IVTV_STREAM_PS 0 -> 0: MPEG-2 Program Stream
IVTV_STREAM_TS 1 -> 3:
IVTV_STREAM_MPEG1 2 -> 2: MPEG-1 System Stream
IVTV_STREAM_PES_AV 3 -> 3:
IVTV_STREAM_PES_V 5 -> 3:
IVTV_STREAM_PES_A 7 -> 3:
IVTV_STREAM_DVD 10 -> 3: MPEG-2 DVD-compatible Stream
IVTV_STREAM_VCD 11 -> 4: MPEG-1 VCD-compatible Stream
IVTV_STREAM_SVCD 12 -> 5: MPEG-2 SVCD-compatible Stream
IVTV_STREAM_DVD_S1 13 -> 3:
IVTV_STREAM_DVD_S2 14 -> 3:
VIDIOC_S_INPUT 'input' : 4,
VIDIOC_S_FMT 'resolution' : '720x576',
'Video Aspect' 'aspect' : 2,
'Video B Frames' 'bframes' : 3,
'Video Bitrate Mode' 'bitrate_mode' : 0,
'Video Bitrate' 'bitrate' : 8000000,
'Video Peak Bitrate' 'bitrate_peak' : 9600000,
'Spatial Filter Mode' 'dnr_mode, bit 0': 3,
'Temporal Filter Mode' 'dnr_mode, bit 1': 3,
'Median Filter Type' 'dnr_type' : 0,
'Spatial Filter' 'dnr_spatial : 0,
'Temporal Filter' 'dnr_temporal : 0,
VIDIOC_S_STD 'framerate' : 0,
'Video GOP Size' 'framespergop' : 12,
'Video GOP Closure' 'gop_closure' : 1,
'Stream Type' 'stream_type' : 14,
"""
tv.v4l2.Videodev.updatecontrol(self, 'Video Aspect', codec.aspect-1)
tv.v4l2.Videodev.updatecontrol(self, 'Audio Sampling Frequency', (codec.audio_bitmask >> 0) & 0x03)
tv.v4l2.Videodev.updatecontrol(self, 'Audio Layer II Bitrate', (codec.audio_bitmask >> 2) & 0x0F)
try:
tv.v4l2.Videodev.updatecontrol(self, 'Audio Encoding Layer', (codec.audio_bitmask >> 6) & 0x01)
except AttributeError, why:
tv.v4l2.Videodev.updatecontrol(self, 'Audio Encoding', (codec.audio_bitmask >> 6) & 0x01)
tv.v4l2.Videodev.updatecontrol(self, 'Audio Stereo Mode', (codec.audio_bitmask >> 8) & 0x03)
tv.v4l2.Videodev.updatecontrol(self, 'Audio Stereo Mode Extension', (codec.audio_bitmask >> 10) & 0x03)
tv.v4l2.Videodev.updatecontrol(self, 'Audio Emphasis', (codec.audio_bitmask >> 12) & 0x03)
tv.v4l2.Videodev.updatecontrol(self, 'Audio CRC', (codec.audio_bitmask >> 14) & 0x01)
tv.v4l2.Videodev.updatecontrol(self, 'Video B Frames', codec.bframes-1)
tv.v4l2.Videodev.updatecontrol(self, 'Video Bitrate Mode', codec.bitrate_mode)
tv.v4l2.Videodev.updatecontrol(self, 'Video Bitrate', codec.bitrate)
tv.v4l2.Videodev.updatecontrol(self, 'Video Peak Bitrate', codec.bitrate_peak)
tv.v4l2.Videodev.updatecontrol(self, 'Spatial Filter Mode', (codec.dnr_mode >> 0) & 0x01)
tv.v4l2.Videodev.updatecontrol(self, 'Temporal Filter Mode', (codec.dnr_mode >> 1) & 0x01)
tv.v4l2.Videodev.updatecontrol(self, 'Spatial Filter', codec.dnr_spatial)
tv.v4l2.Videodev.updatecontrol(self, 'Temporal Filter', codec.dnr_temporal)
tv.v4l2.Videodev.updatecontrol(self, 'Median Filter Type', codec.dnr_type)
tv.v4l2.Videodev.updatecontrol(self, 'Video GOP Size', codec.framespergop)
tv.v4l2.Videodev.updatecontrol(self, 'Video GOP Closure', codec.gop_closure)
tv.v4l2.Videodev.updatecontrol(self, 'Stream Type', self.streamTypeIvtvToV4l2(codec.stream_type))
return
val = struct.pack( CODEC_ST,
codec.aspect,
codec.audio_bitmask,
codec.bframes,
codec.bitrate_mode,
codec.bitrate,
codec.bitrate_peak,
codec.dnr_mode,
codec.dnr_spatial,
codec.dnr_temporal,
codec.dnr_type,
codec.framerate, # read only, ignored on write
codec.framespergop, # read only, ignored on write
codec.gop_closure,
codec.pulldown, # removed from ivtv driver
codec.stream_type)
r = fcntl.ioctl(self.device, i32(IVTV_IOC_S_CODEC), val)
_debug_("setCodecInfo: val=%r, r=%r" % (val, r), 3)
def mspSetMatrix(self, input=None, output=None):
if not input: input = 3
if not output: output = 1
val = struct.pack(MSP_MATRIX_ST, input, output)
r = fcntl.ioctl(self.device, i32(MSP_SET_MATRIX), val)
_debug_("mspSetMatrix: val=%r, r=%r" % (val, r), 3)
def getvbiembed(self):
if self.version >= 0x800:
return self.getcontrol('Stream VBI Format')
try:
r = fcntl.ioctl(self.device, i32(GETVBI_EMBED_NO), struct.pack(VBI_EMBED_ST, 0))
_debug_("getvbiembed: val=%r, r=%r, res=%r" % (struct.pack(VBI_EMBED_ST, 0), r,
struct.unpack(VBI_EMBED_ST, r)), 3)
return struct.unpack(VBI_EMBED_ST, r)[0]
except IOError:
_debug_('getvbiembed: failed', DWARNING)
return 0
def setvbiembed(self, value):
if self.version >= 0x800:
self.setcontrol('Stream VBI Format', value)
return
try:
r = fcntl.ioctl(self.device, i32(SETVBI_EMBED_NO), struct.pack(VBI_EMBED_ST, value))
_debug_("setvbiembed: val=%r, res=%r" % (struct.pack(VBI_EMBED_ST, value), r), 3)
except IOError:
_debug_('setvbiembed: failed', DWARNING)
def gopend(self, value):
r = fcntl.ioctl(self.device, i32(GOP_END_NO), struct.pack(GOP_END_ST, value))
_debug_("gopend: val=%r, res=%r" % (struct.pack(GOP_END_ST, value), r), 1)
def init_settings(self, opts=None):
if not opts:
opts = config.TV_IVTV_OPTIONS
if not tv.v4l2.Videodev.init_settings(self):
return False
(width, height) = string.split(opts['resolution'], 'x')
self.setfmt(int(width), int(height))
#if self.version >= 0x800:
# tv.v4l2.Videodev.enumcontrols(self)
codec = self.getCodecInfo()
codec.aspect = opts['aspect']
codec.audio_bitmask = opts['audio_bitmask']
codec.bframes = opts['bframes']
codec.bitrate_mode = opts['bitrate_mode']
codec.bitrate = opts['bitrate']
codec.bitrate_peak = opts['bitrate_peak']
codec.dnr_mode = opts['dnr_mode']
codec.dnr_spatial = opts['dnr_spatial']
codec.dnr_temporal = opts['dnr_temporal']
codec.dnr_type = opts['dnr_type']
# framerate is set by the std
#codec.framerate = opts['framerate']
codec.framespergop = opts['framespergop']
codec.gop_closure = opts['gop_closure']
codec.pulldown = opts['pulldown']
codec.stream_type = opts['stream_type']
self.setCodecInfo(codec)
return True
def print_settings(self):
tv.v4l2.Videodev.print_settings(self)
codec = self.getCodecInfo()
print 'CODEC::aspect: %s' % codec.aspect
print 'CODEC::audio_bitmask: 0x%X' % codec.audio_bitmask
print 'CODEC::bframes: %s' % codec.bframes
print 'CODEC::bitrate_mode: %s' % codec.bitrate_mode
print 'CODEC::bitrate: %s' % codec.bitrate
print 'CODEC::bitrate_peak: %s' % codec.bitrate_peak
print 'CODEC::dnr_mode: %s' % codec.dnr_mode
print 'CODEC::dnr_spatial: %s' % codec.dnr_spatial
print 'CODEC::dnr_temporal: %s' % codec.dnr_temporal
print 'CODEC::dnr_type: %s' % codec.dnr_type
print 'CODEC::framerate: %s' % codec.framerate
print 'CODEC::framespergop: %s' % codec.framespergop
print 'CODEC::gop_closure: %s' % codec.gop_closure
print 'CODEC::pulldown: %s' % codec.pulldown
print 'CODEC::stream_type: %s' % codec.stream_type
class IVTVCodec:
def __init__(self, args):
self.aspect = args[0]
self.audio_bitmask = args[1]
self.bframes = args[2]
self.bitrate_mode = args[3]
self.bitrate = args[4]
self.bitrate_peak = args[5]
self.dnr_mode = args[6]
self.dnr_spatial = args[7]
self.dnr_temporal = args[8]
self.dnr_type = args[9]
self.framerate = args[10]
self.framespergop = args[11]
self.gop_closure = args[12]
self.pulldown = args[13]
self.stream_type = args[14]
def __str__(self):
res = 'aspect=%d, ' % self.aspect
res += 'audio_bitmask=0x%0X, ' % self.audio_bitmask
res += 'bframes=%d, ' % self.bframes
res += 'bitrate_mode=%d, ' % self.bitrate_mode
res += 'bitrate=%d, ' % self.bitrate
res += 'bitrate_peak=%d, ' % self.bitrate_peak
res += 'dnr_mode=%d, ' % self.dnr_mode
res += 'dnr_spatial=%d, ' % self.dnr_spatial
res += 'dnr_temporal=%d, ' % self.dnr_temporal
res += 'dnr_type=%d, ' % self.dnr_type
res += 'framerate=%d, ' % self.framerate
res += 'framespergop=%d, ' % self.framespergop
res += 'gop_closure=%d, ' % self.gop_closure
res += 'pulldown=%d, ' % self.pulldown
res += 'stream_type=%d' % self.stream_type
return res
if __name__ == '__main__':
config.DEBUG = 2
ivtv_dev = IVTV('/dev/video0')
if not ivtv_dev.init_settings():
import sys
sys.exit(1)
ivtv_dev.listcontrols()
x = ivtv_dev.getcontrol('Spatial Luma Filter Type')
print x
ivtv_dev.setcontrol('Spatial Luma Filter Type', x+1)
print ivtv_dev.getcontrol('Spatial Luma Filter Type')
print ivtv_dev.getextctrl(0x00991002)
#print "PS tests begins"
#print ivtv_dev.getextctrl(0x00980905)
#ivtv_dev.setextctrl(0x00980905, 50000)
#print ivtv_dev.getextctrl(0x00980905)
#print "PS tests ends"
#ivtv_dev.print_settings()
#print 'driver="%s"' % ivtv_dev.driver
#print 'version=%x' % ivtv_dev.version
#print config.TV_IVTV_OPTIONS
#print ivtv_dev.print_settings()
##embed = ivtv_dev.getvbiembed()
##print "current vbi embed=%s" % embed
##ivtv_dev.setvbiembed(1)
##print "set vbi embed=%s (%s)" % (ivtv_dev.getvbiembed(), 1)
##ivtv_dev.setvbiembed(embed)
##print "reset vbi embed=%s (%s)" % (ivtv_dev.getvbiembed(), embed)
##print ivtv_dev.getCodecInfo()
#codec = IVTVCodec((2, 0x00e9, 3, 0, 8000000, 9600000, 0, 0, 8, 0, 0, 15, 1, 0, 10))
#print 'codec:', codec
#ivtv_dev.setCodecInfo(codec)
#print ivtv_dev.getCodecInfo()
"""
To run this as standalone use the following before running python ivtv.py
pythonversion=$(python -V 2>&1 | cut -d" " -f2 | cut -d"." -f1-2)
export PYTHONPATH=/usr/lib/python${pythonversion}/site-packages/freevo
export FREEVO_SHARE=/usr/share/freevo
export FREEVO_CONFIG=/usr/share/freevo/freevo_config.py
export FREEVO_CONTRIB=/usr/share/freevo/contrib
export RUNAPP=""
python ivtv.py
"""
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