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| 10 | |
10 | |
| 11 | This module provides an interface to the Linux DVB API. It is a straightforward |
11 | This module provides an interface to the Linux DVB API. It is a straightforward |
| 12 | translation of the C API. You should read the Linux DVB API description to make |
12 | translation of the C API. You should read the Linux DVB API description to make |
| 13 | any sense of this module. It can be found here: |
13 | any sense of this module. It can be found here: |
| 14 | |
14 | |
| 15 | http://www.linuxtv.org/developer/dvbapi.xml |
15 | http://www.linuxtv.org/docs/dvbapi/dvbapi.html |
| 16 | |
16 | |
| 17 | All constants from F<frontend.h> and F<demux.h> are exported by their C |
17 | All constants from F<frontend.h> and F<demux.h> are exported by their C |
| 18 | name and by default. |
18 | name and by default. |
| 19 | |
19 | |
| 20 | Noteworthy differences to the C API: unions and sub-structs are usually |
20 | Noteworthy differences to the C API: unions and sub-structs are usually |
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| 111 | sub ber { _read_ber ($_[0]{fd}) } |
111 | sub ber { _read_ber ($_[0]{fd}) } |
| 112 | sub snr { _snr ($_[0]{fd}) } |
112 | sub snr { _snr ($_[0]{fd}) } |
| 113 | sub signal_strength { _signal_strength ($_[0]{fd}) } |
113 | sub signal_strength { _signal_strength ($_[0]{fd}) } |
| 114 | sub uncorrected { _uncorrected ($_[0]{fd}) } |
114 | sub uncorrected { _uncorrected ($_[0]{fd}) } |
| 115 | |
115 | |
| 116 | #sub set { _set ($_[0]{fd}, $_[0]{type}) } |
116 | =item $fe->set (parameter => value, ...) |
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117 | |
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118 | Sets frontend parameters. All values are stuffed into the |
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119 | C<dvb_frontend_parameters> structure without conversion and passed to |
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120 | FE_SET_FRONTEND. |
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121 | |
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122 | Returns true on success. |
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123 | |
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124 | All modes: |
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125 | |
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126 | frequency => |
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127 | inversion => |
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128 | |
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129 | QPSK frontends: |
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130 | |
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131 | symbol_rate => |
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132 | fec_inner => |
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133 | |
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134 | QAM frontends: |
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135 | |
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136 | symbol_rate => |
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137 | fec_inner => |
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138 | modulation => |
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139 | |
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140 | QFDM frontends: |
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141 | |
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142 | bandwidth => |
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143 | code_rate_HP => |
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144 | code_rate_LP => |
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145 | constellation => |
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146 | transmission_mode => |
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147 | |
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148 | =cut |
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149 | |
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150 | sub set { |
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151 | my ($self) = shift; |
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152 | _set $self->{fd}, { @_ }, $self->{type} |
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153 | } |
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154 | |
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155 | =item $fe->parameters |
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156 | |
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157 | Calls FE_GET_FRONTEND and returns a hash reference that contains the same keys |
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158 | as given to the C<set> method. |
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159 | |
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160 | Example: |
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161 | |
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162 | Data::Dumper::Dumper $fe->get |
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163 | |
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164 | { |
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165 | frequency => 426000000, # 426 Mhz |
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166 | inversion => 0, # INVERSION_OFF |
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167 | symbol_rate => 6900000, # 6.9 MB/s |
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168 | fec_inner => 0, # FEC_NONE |
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169 | modulation => 3, # QAM_64 |
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170 | } |
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171 | |
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172 | =cut |
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173 | |
| 117 | sub parameters { _get ($_[0]{fd}, $_[0]{type}) } |
174 | sub parameters { _get ($_[0]{fd}, $_[0]{type}) } |
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175 | sub get { _get ($_[0]{fd}, $_[0]{type}) } # unannounced alias |
| 118 | sub event { _event ($_[0]{fd}, $_[0]{type}) } |
176 | sub event { _event ($_[0]{fd}, $_[0]{type}) } |
| 119 | |
177 | |
| 120 | package Linux::DVB::Demux; |
178 | package Linux::DVB::Demux; |
| 121 | |
179 | |
| 122 | @ISA = qw(Linux::DVB); |
180 | @ISA = qw(Linux::DVB); |
