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Diffstat (limited to '')
-rw-r--r-- | src/audio_core/hle/filter.cpp | 117 |
1 files changed, 0 insertions, 117 deletions
diff --git a/src/audio_core/hle/filter.cpp b/src/audio_core/hle/filter.cpp deleted file mode 100644 index b24a79b89..000000000 --- a/src/audio_core/hle/filter.cpp +++ /dev/null @@ -1,117 +0,0 @@ -// Copyright 2016 Citra Emulator Project -// Licensed under GPLv2 or any later version -// Refer to the license.txt file included. - -#include <array> -#include <cstddef> -#include "audio_core/hle/common.h" -#include "audio_core/hle/dsp.h" -#include "audio_core/hle/filter.h" -#include "common/common_types.h" -#include "common/math_util.h" - -namespace DSP { -namespace HLE { - -void SourceFilters::Reset() { - Enable(false, false); -} - -void SourceFilters::Enable(bool simple, bool biquad) { - simple_filter_enabled = simple; - biquad_filter_enabled = biquad; - - if (!simple) - simple_filter.Reset(); - if (!biquad) - biquad_filter.Reset(); -} - -void SourceFilters::Configure(SourceConfiguration::Configuration::SimpleFilter config) { - simple_filter.Configure(config); -} - -void SourceFilters::Configure(SourceConfiguration::Configuration::BiquadFilter config) { - biquad_filter.Configure(config); -} - -void SourceFilters::ProcessFrame(StereoFrame16& frame) { - if (!simple_filter_enabled && !biquad_filter_enabled) - return; - - if (simple_filter_enabled) { - FilterFrame(frame, simple_filter); - } - - if (biquad_filter_enabled) { - FilterFrame(frame, biquad_filter); - } -} - -// SimpleFilter - -void SourceFilters::SimpleFilter::Reset() { - y1.fill(0); - // Configure as passthrough. - a1 = 0; - b0 = 1 << 15; -} - -void SourceFilters::SimpleFilter::Configure( - SourceConfiguration::Configuration::SimpleFilter config) { - - a1 = config.a1; - b0 = config.b0; -} - -std::array<s16, 2> SourceFilters::SimpleFilter::ProcessSample(const std::array<s16, 2>& x0) { - std::array<s16, 2> y0; - for (size_t i = 0; i < 2; i++) { - const s32 tmp = (b0 * x0[i] + a1 * y1[i]) >> 15; - y0[i] = MathUtil::Clamp(tmp, -32768, 32767); - } - - y1 = y0; - - return y0; -} - -// BiquadFilter - -void SourceFilters::BiquadFilter::Reset() { - x1.fill(0); - x2.fill(0); - y1.fill(0); - y2.fill(0); - // Configure as passthrough. - a1 = a2 = b1 = b2 = 0; - b0 = 1 << 14; -} - -void SourceFilters::BiquadFilter::Configure( - SourceConfiguration::Configuration::BiquadFilter config) { - - a1 = config.a1; - a2 = config.a2; - b0 = config.b0; - b1 = config.b1; - b2 = config.b2; -} - -std::array<s16, 2> SourceFilters::BiquadFilter::ProcessSample(const std::array<s16, 2>& x0) { - std::array<s16, 2> y0; - for (size_t i = 0; i < 2; i++) { - const s32 tmp = (b0 * x0[i] + b1 * x1[i] + b2 * x2[i] + a1 * y1[i] + a2 * y2[i]) >> 14; - y0[i] = MathUtil::Clamp(tmp, -32768, 32767); - } - - x2 = x1; - x1 = x0; - y2 = y1; - y1 = y0; - - return y0; -} - -} // namespace HLE -} // namespace DSP |