Generic Image Library: packed_dynamic_channel_reference

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Classes | Functions
packed_dynamic_channel_reference
Channel » Models

Represents a reference proxy to a channel operating over a bit range whose offset is specified at run time. Models ChannelConcept. More...

## Classes
class | packed_dynamic_channel_reference< BitField, NumBits, false >
| Models a constant subbyte channel reference whose bit offset is a runtime parameter. Models ChannelConcept Same as packed_channel_reference, except that the offset is a runtime parameter. More...
class | packed_dynamic_channel_reference< BitField, NumBits, true >
| Models a mutable subbyte channel reference whose bit offset is a runtime parameter. Models ChannelConcept Same as packed_channel_reference, except that the offset is a runtime parameter. More...

## Functions
template<typename BF, int NB, bool M, typename R>
void | swap (const boost::gil::packed_dynamic_channel_reference< BF, NB, M > x, R &y)
| swap for packed_dynamic_channel_reference
template<typename BF, int NB, bool M>
void | swap (typename boost::gil::packed_dynamic_channel_reference< BF, NB, M >::value_type &x, const boost::gil::packed_dynamic_channel_reference< BF, NB, M > y)
| swap for packed_dynamic_channel_reference
template<typename BF, int NB, bool M>
void | swap (const boost::gil::packed_dynamic_channel_reference< BF, NB, M > x, const boost::gil::packed_dynamic_channel_reference< BF, NB, M > y)
| swap for packed_dynamic_channel_reference

## Detailed Description

Represents a reference proxy to a channel operating over a bit range whose offset is specified at run time. Models ChannelConcept.

Example:

// Reference to a 2-bit channel whose offset is specified at construction time
using bits2_dynamic_ref_t = packed_dynamic_channel_reference<uint8_t,2,true> const;
uint16_t data=0;
bits2_dynamic_ref_t channel_ref(&data,1);
channel_ref = channel_traits<bits2_dynamic_ref_t>::max_value(); // == 3
assert(data == 6); // == (3<<1) == 6