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Settles, at least for now, on 15-tap notch filtering.

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Thomas Harte
2018-11-26 22:34:31 -05:00
parent 61a63a673c
commit d45c2a1f28
3 changed files with 78 additions and 55 deletions
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Outputs/OpenGL/ScanTarget.hpp
+5 -3
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@@ -14,6 +14,8 @@
#include "Primitives/TextureTarget.hpp"
#include "Primitives/Rectangle.hpp"
#include "../../SignalProcessing/FIRFilter.hpp"
#include <array>
#include <atomic>
#include <cstdint>
@@ -179,12 +181,12 @@ class ScanTarget: public Outputs::Display::ScanTarget {
static std::unique_ptr<Shader> input_shader(InputDataType input_data_type, DisplayType display_type);
static std::unique_ptr<Shader> composite_to_svideo_shader(int colour_cycle_numerator, int colour_cycle_denominator, int processing_width);
static std::unique_ptr<Shader> svideo_to_rgb_shader(int colour_cycle_numerator, int colour_cycle_denominator, int processing_width);
static std::vector<float> coefficients_for_filter(int colour_cycle_numerator, int colour_cycle_denominator, int processing_width, float multiple_of_colour_clock);
static SignalProcessing::FIRFilter colour_filter(int colour_cycle_numerator, int colour_cycle_denominator, int processing_width, float low_cutoff, float high_cutoff);
struct PipelineStage {
PipelineStage(Shader *shader, GLenum texture_unit) :
PipelineStage(Shader *shader, GLenum texture_unit, GLint magnification_filter) :
shader(shader),
target(LineBufferWidth, LineBufferHeight, texture_unit, GL_LINEAR, false) {}
target(LineBufferWidth, LineBufferHeight, texture_unit, magnification_filter, false) {}
std::unique_ptr<Shader> shader;
TextureTarget target;