wrap_position_with_loop()

std::vector< uint64_t > MayaFlux::Kakshya::wrap_position_with_loop	(	const std::vector< uint64_t > &	position,
		const Region &	loop_region,
		bool	looping_enabled
	)

Wrap a position within loop boundaries if looping is enabled.

Parameters

position	Current position.
loop_start	Loop start position.
loop_end	Loop end position.
looping_enabled	Whether looping is enabled.

Returns

Wrapped position.

Definition at line 122 of file CoordUtils.cpp.

{
    if (!looping_enabled || loop_region.start_coordinates.size() < 2 || loop_region.end_coordinates.size() < 2) {
        return positions;
    }
 
    uint64_t loop_start_frame = loop_region.start_coordinates[0];
    uint64_t loop_start_channel = loop_region.start_coordinates[1];
    uint64_t loop_end_frame = loop_region.end_coordinates[0];
    uint64_t loop_end_channel = loop_region.end_coordinates[1];
 
    if (loop_end_frame <= loop_start_frame) {
        return positions;
    }
 
    std::vector<uint64_t> wrapped_positions = positions;
    uint64_t loop_length = loop_end_frame - loop_start_frame + 1;
 
    for (size_t ch = loop_start_channel; ch <= loop_end_channel && ch < positions.size(); ++ch) {
        if (positions[ch] > loop_end_frame) {
            uint64_t overflow = positions[ch] - loop_end_frame;
            wrapped_positions[ch] = loop_start_frame + (overflow % loop_length);
        }
    }
 
    return wrapped_positions;
}

References MayaFlux::Kakshya::Region::end_coordinates, and MayaFlux::Kakshya::Region::start_coordinates.

Referenced by MayaFlux::Kakshya::SoundStreamContainer::set_read_position().

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