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author | liamwhite <liamwhite@users.noreply.github.com> | 2022-07-23 21:20:39 +0200 |
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committer | GitHub <noreply@github.com> | 2022-07-23 21:20:39 +0200 |
commit | 97729fd8e9c2f8cabc626ab03a666c9428e01c5e (patch) | |
tree | f6a2f3b6c71b51a646d1502c01a4f6be92a3ed26 /src/audio_core/renderer/command/effect/delay.cpp | |
parent | Merge pull request #8629 from Docteh/test_transifex (diff) | |
parent | Project Andio (diff) | |
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Diffstat (limited to 'src/audio_core/renderer/command/effect/delay.cpp')
-rw-r--r-- | src/audio_core/renderer/command/effect/delay.cpp | 238 |
1 files changed, 238 insertions, 0 deletions
diff --git a/src/audio_core/renderer/command/effect/delay.cpp b/src/audio_core/renderer/command/effect/delay.cpp new file mode 100644 index 000000000..a4e408d40 --- /dev/null +++ b/src/audio_core/renderer/command/effect/delay.cpp @@ -0,0 +1,238 @@ +// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project +// SPDX-License-Identifier: GPL-2.0-or-later + +#include "audio_core/renderer/adsp/command_list_processor.h" +#include "audio_core/renderer/command/effect/delay.h" + +namespace AudioCore::AudioRenderer { +/** + * Update the DelayInfo state according to the given parameters. + * + * @param params - Input parameters to update the state. + * @param state - State to be updated. + */ +static void SetDelayEffectParameter(const DelayInfo::ParameterVersion1& params, + DelayInfo::State& state) { + auto channel_spread{params.channel_spread}; + state.feedback_gain = params.feedback_gain * 0.97998046875f; + state.delay_feedback_gain = state.feedback_gain * (1.0f - channel_spread); + if (params.channel_count == 4 || params.channel_count == 6) { + channel_spread >>= 1; + } + state.delay_feedback_cross_gain = channel_spread * state.feedback_gain; + state.lowpass_feedback_gain = params.lowpass_amount * 0.949951171875f; + state.lowpass_gain = 1.0f - state.lowpass_feedback_gain; +} + +/** + * Initialize a new DelayInfo state according to the given parameters. + * + * @param params - Input parameters to update the state. + * @param state - State to be updated. + * @param workbuffer - Game-supplied memory for the state. (Unused) + */ +static void InitializeDelayEffect(const DelayInfo::ParameterVersion1& params, + DelayInfo::State& state, + [[maybe_unused]] const CpuAddr workbuffer) { + state = {}; + + for (u32 channel = 0; channel < params.channel_count; channel++) { + Common::FixedPoint<32, 32> sample_count_max{0.064f}; + sample_count_max *= params.sample_rate.to_int_floor() * params.delay_time_max; + + Common::FixedPoint<18, 14> delay_time{params.delay_time}; + delay_time *= params.sample_rate / 1000; + Common::FixedPoint<32, 32> sample_count{delay_time}; + + if (sample_count > sample_count_max) { + sample_count = sample_count_max; + } + + state.delay_lines[channel].sample_count_max = sample_count_max.to_int_floor(); + state.delay_lines[channel].sample_count = sample_count.to_int_floor(); + state.delay_lines[channel].buffer.resize(state.delay_lines[channel].sample_count, 0); + if (state.delay_lines[channel].buffer.size() == 0) { + state.delay_lines[channel].buffer.push_back(0); + } + state.delay_lines[channel].buffer_pos = 0; + state.delay_lines[channel].decay_rate = 1.0f; + } + + SetDelayEffectParameter(params, state); +} + +/** + * Delay effect impl, according to the parameters and current state, on the input mix buffers, + * saving the results to the output mix buffers. + * + * @tparam NumChannels - Number of channels to process. 1-6. + * @param params - Input parameters to use. + * @param state - State to use, must be initialized (see InitializeDelayEffect). + * @param inputs - Input mix buffers to performan the delay on. + * @param outputs - Output mix buffers to receive the delayed samples. + * @param sample_count - Number of samples to process. + */ +template <size_t NumChannels> +static void ApplyDelay(const DelayInfo::ParameterVersion1& params, DelayInfo::State& state, + std::vector<std::span<const s32>>& inputs, + std::vector<std::span<s32>>& outputs, const u32 sample_count) { + for (u32 sample_index = 0; sample_index < sample_count; sample_index++) { + std::array<Common::FixedPoint<50, 14>, NumChannels> input_samples{}; + for (u32 channel = 0; channel < NumChannels; channel++) { + input_samples[channel] = inputs[channel][sample_index] * 64; + } + + std::array<Common::FixedPoint<50, 14>, NumChannels> delay_samples{}; + for (u32 channel = 0; channel < NumChannels; channel++) { + delay_samples[channel] = state.delay_lines[channel].Read(); + } + + // clang-format off + std::array<std::array<Common::FixedPoint<18, 14>, NumChannels>, NumChannels> matrix{}; + if constexpr (NumChannels == 1) { + matrix = {{ + {state.feedback_gain}, + }}; + } else if constexpr (NumChannels == 2) { + matrix = {{ + {state.delay_feedback_gain, state.delay_feedback_cross_gain}, + {state.delay_feedback_cross_gain, state.delay_feedback_gain}, + }}; + } else if constexpr (NumChannels == 4) { + matrix = {{ + {state.delay_feedback_gain, state.delay_feedback_cross_gain, state.delay_feedback_cross_gain, 0.0f}, + {state.delay_feedback_cross_gain, state.delay_feedback_gain, 0.0f, state.delay_feedback_cross_gain}, + {state.delay_feedback_cross_gain, 0.0f, state.delay_feedback_gain, state.delay_feedback_cross_gain}, + {0.0f, state.delay_feedback_cross_gain, state.delay_feedback_cross_gain, state.delay_feedback_gain}, + }}; + } else if constexpr (NumChannels == 6) { + matrix = {{ + {state.delay_feedback_gain, 0.0f, state.delay_feedback_cross_gain, 0.0f, state.delay_feedback_cross_gain, 0.0f}, + {0.0f, state.delay_feedback_gain, state.delay_feedback_cross_gain, 0.0f, 0.0f, state.delay_feedback_cross_gain}, + {state.delay_feedback_cross_gain, state.delay_feedback_cross_gain, state.delay_feedback_gain, 0.0f, 0.0f, 0.0f}, + {0.0f, 0.0f, 0.0f, params.feedback_gain, 0.0f, 0.0f}, + {state.delay_feedback_cross_gain, 0.0f, 0.0f, 0.0f, state.delay_feedback_gain, state.delay_feedback_cross_gain}, + {0.0f, state.delay_feedback_cross_gain, 0.0f, 0.0f, state.delay_feedback_cross_gain, state.delay_feedback_gain}, + }}; + } + // clang-format on + + std::array<Common::FixedPoint<50, 14>, NumChannels> gained_samples{}; + for (u32 channel = 0; channel < NumChannels; channel++) { + Common::FixedPoint<50, 14> delay{}; + for (u32 j = 0; j < NumChannels; j++) { + delay += delay_samples[j] * matrix[j][channel]; + } + gained_samples[channel] = input_samples[channel] * params.in_gain + delay; + } + + for (u32 channel = 0; channel < NumChannels; channel++) { + state.lowpass_z[channel] = gained_samples[channel] * state.lowpass_gain + + state.lowpass_z[channel] * state.lowpass_feedback_gain; + state.delay_lines[channel].Write(state.lowpass_z[channel]); + } + + for (u32 channel = 0; channel < NumChannels; channel++) { + outputs[channel][sample_index] = (input_samples[channel] * params.dry_gain + + delay_samples[channel] * params.wet_gain) + .to_int_floor() / + 64; + } + } +} + +/** + * Apply a delay effect if enabled, according to the parameters and current state, on the input mix + * buffers, saving the results to the output mix buffers. + * + * @param params - Input parameters to use. + * @param state - State to use, must be initialized (see InitializeDelayEffect). + * @param enabled - If enabled, delay will be applied, otherwise input is copied to output. + * @param inputs - Input mix buffers to performan the delay on. + * @param outputs - Output mix buffers to receive the delayed samples. + * @param sample_count - Number of samples to process. + */ +static void ApplyDelayEffect(const DelayInfo::ParameterVersion1& params, DelayInfo::State& state, + const bool enabled, std::vector<std::span<const s32>>& inputs, + std::vector<std::span<s32>>& outputs, const u32 sample_count) { + + if (!IsChannelCountValid(params.channel_count)) { + LOG_ERROR(Service_Audio, "Invalid delay channels {}", params.channel_count); + return; + } + + if (enabled) { + switch (params.channel_count) { + case 1: + ApplyDelay<1>(params, state, inputs, outputs, sample_count); + break; + case 2: + ApplyDelay<2>(params, state, inputs, outputs, sample_count); + break; + case 4: + ApplyDelay<4>(params, state, inputs, outputs, sample_count); + break; + case 6: + ApplyDelay<6>(params, state, inputs, outputs, sample_count); + break; + default: + for (u32 channel = 0; channel < params.channel_count; channel++) { + if (inputs[channel].data() != outputs[channel].data()) { + std::memcpy(outputs[channel].data(), inputs[channel].data(), + sample_count * sizeof(s32)); + } + } + break; + } + } else { + for (u32 channel = 0; channel < params.channel_count; channel++) { + if (inputs[channel].data() != outputs[channel].data()) { + std::memcpy(outputs[channel].data(), inputs[channel].data(), + sample_count * sizeof(s32)); + } + } + } +} + +void DelayCommand::Dump([[maybe_unused]] const ADSP::CommandListProcessor& processor, + std::string& string) { + string += fmt::format("DelayCommand\n\tenabled {} \n\tinputs: ", effect_enabled); + for (u32 i = 0; i < MaxChannels; i++) { + string += fmt::format("{:02X}, ", inputs[i]); + } + string += "\n\toutputs: "; + for (u32 i = 0; i < MaxChannels; i++) { + string += fmt::format("{:02X}, ", outputs[i]); + } + string += "\n"; +} + +void DelayCommand::Process(const ADSP::CommandListProcessor& processor) { + std::vector<std::span<const s32>> input_buffers(parameter.channel_count); + std::vector<std::span<s32>> output_buffers(parameter.channel_count); + + for (s16 i = 0; i < parameter.channel_count; i++) { + input_buffers[i] = processor.mix_buffers.subspan(inputs[i] * processor.sample_count, + processor.sample_count); + output_buffers[i] = processor.mix_buffers.subspan(outputs[i] * processor.sample_count, + processor.sample_count); + } + + auto state_{reinterpret_cast<DelayInfo::State*>(state)}; + + if (effect_enabled) { + if (parameter.state == DelayInfo::ParameterState::Updating) { + SetDelayEffectParameter(parameter, *state_); + } else if (parameter.state == DelayInfo::ParameterState::Initialized) { + InitializeDelayEffect(parameter, *state_, workbuffer); + } + } + ApplyDelayEffect(parameter, *state_, effect_enabled, input_buffers, output_buffers, + processor.sample_count); +} + +bool DelayCommand::Verify(const ADSP::CommandListProcessor& processor) { + return true; +} + +} // namespace AudioCore::AudioRenderer |