/* * Carla Native Plugins * Copyright (C) 2013-2023 Filipe Coelho * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * For a full copy of the GNU General Public License see the doc/GPL.txt file. */ #include "CarlaNativePrograms.hpp" #include "CarlaString.hpp" #include "audio-base.hpp" #include // -------------------------------------------------------------------------------------------------------------------- class VolumeFilter { static constexpr const float kPIf = static_cast(M_PI); float a0, b1, z1; public: VolumeFilter(const float sampleRate) noexcept { setSampleRate(sampleRate); } void reset() noexcept { a0 = 1.f - b1; z1 = 0.f; } void setSampleRate(const float sampleRate) noexcept { const float frequency = 30.0f / sampleRate; b1 = std::exp(-2.f * kPIf * frequency); a0 = 1.f - b1; z1 = 0.f; } void processStereo(const float gain, float* buffers[2], const uint32_t frames) noexcept { const float _a0 = a0; const float _b1 = b1; float _z1 = z1; for (uint32_t i=0; i < frames; ++i) { _z1 = gain * _a0 + _z1 * _b1; buffers[0][i] *= _z1; buffers[1][i] *= _z1; } z1 = _z1; } }; // -------------------------------------------------------------------------------------------------------------------- #ifndef __MOD_DEVICES__ class AudioFilePlugin : public NativePluginWithMidiPrograms #else class AudioFilePlugin : public NativePluginClass #endif { public: #ifndef __MOD_DEVICES__ static constexpr const char* const audiofilesWildcard = #ifdef HAVE_SNDFILE "*.aif;*.aifc;*.aiff;*.au;*.bwf;*.flac;*.htk;*.iff;*.mat4;*.mat5;*.oga;*.ogg;*.opus;" "*.paf;*.pvf;*.pvf5;*.sd2;*.sf;*.snd;*.svx;*.vcc;*.w64;*.wav;*.xi;" #endif #ifdef HAVE_FFMPEG "*.3g2;*.3gp;*.aac;*.ac3;*.amr;*.ape;*.mp2;*.mp3;*.mpc;*.wma;" #ifndef HAVE_SNDFILE "*.flac;*.oga;*.ogg;*.w64;*.wav;" #endif #else "*.mp3;" #endif ; enum PendingInlineDisplay : uint8_t { InlineDisplayNotPending, InlineDisplayNeedRequest, InlineDisplayRequesting }; #endif enum Parameters { kParameterLooping, kParameterHostSync, kParameterVolume, kParameterEnabled, kParameterQuadChannels, kParameterInfoChannels, kParameterInfoBitRate, kParameterInfoBitDepth, kParameterInfoSampleRate, kParameterInfoLength, kParameterInfoPosition, kParameterInfoPoolFill, kParameterCount }; AudioFilePlugin(const NativeHostDescriptor* const host) #ifndef __MOD_DEVICES__ : NativePluginWithMidiPrograms(host, fPrograms, 3), fPrograms(hostGetFilePath("audio"), audiofilesWildcard), #else : NativePluginClass(host), #endif fVolumeFilter(getSampleRate()) {} protected: // ---------------------------------------------------------------------------------------------------------------- // Plugin parameter calls uint32_t getParameterCount() const override { return kParameterCount; } const NativeParameter* getParameterInfo(const uint32_t index) const override { static NativeParameter param; param.scalePointCount = 0; param.scalePoints = nullptr; param.unit = nullptr; param.ranges.step = 1.0f; param.ranges.stepSmall = 1.0f; param.ranges.stepLarge = 1.0f; param.designation = NATIVE_PARAMETER_DESIGNATION_NONE; switch (index) { case kParameterLooping: param.name = "Loop Mode"; param.hints = static_cast(NATIVE_PARAMETER_IS_AUTOMATABLE| NATIVE_PARAMETER_IS_ENABLED| NATIVE_PARAMETER_IS_BOOLEAN); param.ranges.def = 1.0f; param.ranges.min = 0.0f; param.ranges.max = 1.0f; break; case kParameterHostSync: param.name = "Host Sync"; param.hints = static_cast(NATIVE_PARAMETER_IS_AUTOMATABLE| NATIVE_PARAMETER_IS_ENABLED| NATIVE_PARAMETER_IS_BOOLEAN); #ifdef __MOD_DEVICES__ param.ranges.def = 0.0f; #else param.ranges.def = 1.0f; #endif param.ranges.min = 0.0f; param.ranges.max = 1.0f; break; case kParameterVolume: param.name = "Volume"; param.hints = static_cast(NATIVE_PARAMETER_IS_AUTOMATABLE| NATIVE_PARAMETER_IS_ENABLED); param.ranges.def = 100.0f; param.ranges.min = 0.0f; param.ranges.max = 127.0f; param.ranges.stepSmall = 0.5f; param.ranges.stepLarge = 10.0f; param.unit = "%"; break; case kParameterEnabled: param.name = "Enabled"; param.hints = static_cast(NATIVE_PARAMETER_IS_AUTOMATABLE| NATIVE_PARAMETER_IS_ENABLED| NATIVE_PARAMETER_IS_BOOLEAN| NATIVE_PARAMETER_USES_DESIGNATION); param.ranges.def = 1.0f; param.ranges.min = 0.0f; param.ranges.max = 1.0f; param.designation = NATIVE_PARAMETER_DESIGNATION_ENABLED; break; case kParameterQuadChannels: param.name = "Quad Channels"; param.hints = static_cast(NATIVE_PARAMETER_IS_AUTOMATABLE| NATIVE_PARAMETER_IS_ENABLED| NATIVE_PARAMETER_IS_INTEGER| NATIVE_PARAMETER_USES_SCALEPOINTS); param.ranges.def = 0.0f; param.ranges.min = 0.0f; param.ranges.max = 2.0f; { static const NativeParameterScalePoint scalePoints[3] = { { "Channels 1 + 2", 0 }, { "Channels 3 + 4", 1 }, { "Channels 1&2 + 3&4", 2 } }; param.scalePointCount = 3; param.scalePoints = scalePoints; } break; case kParameterInfoChannels: param.name = "Num Channels"; param.hints = static_cast(NATIVE_PARAMETER_IS_AUTOMATABLE| NATIVE_PARAMETER_IS_ENABLED| NATIVE_PARAMETER_IS_INTEGER| NATIVE_PARAMETER_IS_OUTPUT); param.ranges.def = 0.0f; param.ranges.min = 0.0f; param.ranges.max = 2.0f; break; case kParameterInfoBitRate: param.name = "Bit Rate"; param.hints = static_cast(NATIVE_PARAMETER_IS_AUTOMATABLE| NATIVE_PARAMETER_IS_ENABLED| NATIVE_PARAMETER_IS_INTEGER| NATIVE_PARAMETER_IS_OUTPUT); param.ranges.def = 0.0f; param.ranges.min = -1.0f; param.ranges.max = 384000.0f * 64.0f * 2.0f; break; case kParameterInfoBitDepth: param.name = "Bit Depth"; param.hints = static_cast(NATIVE_PARAMETER_IS_AUTOMATABLE| NATIVE_PARAMETER_IS_ENABLED| NATIVE_PARAMETER_IS_INTEGER| NATIVE_PARAMETER_IS_OUTPUT); param.ranges.def = 0.0f; param.ranges.min = 0.0f; param.ranges.max = 64.0f; break; case kParameterInfoSampleRate: param.name = "Sample Rate"; param.hints = static_cast(NATIVE_PARAMETER_IS_AUTOMATABLE| NATIVE_PARAMETER_IS_ENABLED| NATIVE_PARAMETER_IS_INTEGER| NATIVE_PARAMETER_IS_OUTPUT); param.ranges.def = 0.0f; param.ranges.min = 0.0f; param.ranges.max = 384000.0f; break; case kParameterInfoLength: param.name = "Length"; param.hints = static_cast(NATIVE_PARAMETER_IS_AUTOMATABLE| NATIVE_PARAMETER_IS_ENABLED| NATIVE_PARAMETER_IS_OUTPUT); param.ranges.def = 0.0f; param.ranges.min = 0.0f; param.ranges.max = (float)INT64_MAX; param.unit = "s"; break; case kParameterInfoPosition: param.name = "Position"; param.hints = static_cast(NATIVE_PARAMETER_IS_AUTOMATABLE| NATIVE_PARAMETER_IS_ENABLED| NATIVE_PARAMETER_IS_OUTPUT); param.ranges.def = 0.0f; param.ranges.min = 0.0f; param.ranges.max = 100.0f; param.unit = "%"; break; case kParameterInfoPoolFill: param.name = "Pool Fill"; param.hints = static_cast(NATIVE_PARAMETER_IS_AUTOMATABLE| NATIVE_PARAMETER_IS_ENABLED| NATIVE_PARAMETER_IS_OUTPUT); param.ranges.def = 0.0f; param.ranges.min = 0.0f; param.ranges.max = 100.0f; param.unit = "%"; break; default: return nullptr; } return ¶m; } float getParameterValue(const uint32_t index) const override { switch (index) { case kParameterLooping: return fLoopMode ? 1.0f : 0.0f; case kParameterHostSync: return fHostSync ? 1.f : 0.f; case kParameterEnabled: return fEnabled ? 1.f : 0.f; case kParameterQuadChannels: return fQuadMode; case kParameterVolume: return fVolume * 100.f; case kParameterInfoPosition: return fLastPosition; case kParameterInfoPoolFill: return fReadableBufferFill; case kParameterInfoBitRate: return static_cast(fReader.getCurrentBitRate()); } const ADInfo nfo = fReader.getFileInfo(); switch (index) { case kParameterInfoChannels: return static_cast(nfo.channels); case kParameterInfoBitDepth: return static_cast(nfo.bit_depth); case kParameterInfoSampleRate: return static_cast(nfo.sample_rate); case kParameterInfoLength: return static_cast(nfo.length)/1000.f; } return 0.f; } void setParameterValue(const uint32_t index, const float value) override { if (index == kParameterVolume) { fVolume = value / 100.f; return; } if (index == kParameterQuadChannels) { const int ivalue = static_cast(value + 0.5f); CARLA_SAFE_ASSERT_INT_RETURN(value >= AudioFileReader::kQuad1and2 && value <= AudioFileReader::kQuadAll, value,); fQuadMode = static_cast(ivalue); fPendingFileReload = true; hostRequestIdle(); return; } const bool b = value > 0.5f; switch (index) { case kParameterLooping: if (fLoopMode != b) fLoopMode = b; break; case kParameterHostSync: if (fHostSync != b) { fInternalTransportFrame = 0; fHostSync = b; } break; case kParameterEnabled: if (fEnabled != b) { fInternalTransportFrame = 0; fEnabled = b; } break; default: break; } } // ---------------------------------------------------------------------------------------------------------------- // Plugin state calls void setCustomData(const char* const key, const char* const value) override { if (std::strcmp(key, "file") != 0) return; #ifndef __MOD_DEVICES__ invalidateNextFilename(); #endif loadFilename(value); } #ifndef __MOD_DEVICES__ void setStateFromFile(const char* const filename) override { loadFilename(filename); } #endif // ---------------------------------------------------------------------------------------------------------------- // Plugin process calls #ifndef __MOD_DEVICES__ void process2(const float* const*, float** const outBuffer, const uint32_t frames, const NativeMidiEvent*, uint32_t) override #else void process(const float* const*, float** const outBuffer, const uint32_t frames, const NativeMidiEvent*, uint32_t) override #endif { float* const out1 = outBuffer[0]; float* const out2 = outBuffer[1]; float* const playCV = outBuffer[2]; if (! fDoProcess) { // carla_stderr("P: no process"); carla_zeroFloats(out1, frames); carla_zeroFloats(out2, frames); carla_zeroFloats(playCV, frames); fLastPosition = 0.f; fReadableBufferFill = 0.f; return; } bool playing; uint64_t framePos; if (fHostSync) { const NativeTimeInfo* const timePos = getTimeInfo(); playing = fEnabled && timePos->playing; framePos = timePos->frame; } else { playing = fEnabled; framePos = fInternalTransportFrame; if (playing) fInternalTransportFrame += frames; } // not playing if (! playing) { carla_zeroFloats(out1, frames); carla_zeroFloats(out2, frames); carla_zeroFloats(playCV, frames); return; } const bool offline = isOffline(); bool needsIdleRequest = false; if (fReader.tickFrames(outBuffer, 0, frames, framePos, fLoopMode, offline) && ! fPendingFileRead) { if (offline) { fPendingFileRead = false; fReader.readPoll(); } else { fPendingFileRead = true; needsIdleRequest = true; } } fLastPosition = fReader.getLastPlayPosition() * 100.f; fReadableBufferFill = fReader.getReadableBufferFill() * 100.f; fVolumeFilter.processStereo(fVolume, outBuffer, frames); #ifndef __MOD_DEVICES__ if (fInlineDisplay.writtenValues < 32) { fInlineDisplay.lastValuesL[fInlineDisplay.writtenValues] = carla_findMaxNormalizedFloat(out1, frames); fInlineDisplay.lastValuesR[fInlineDisplay.writtenValues] = carla_findMaxNormalizedFloat(out2, frames); ++fInlineDisplay.writtenValues; } if (fInlineDisplay.pending == InlineDisplayNotPending) { needsIdleRequest = true; fInlineDisplay.pending = InlineDisplayNeedRequest; } #endif if (needsIdleRequest) hostRequestIdle(); } // ---------------------------------------------------------------------------------------------------------------- // Plugin UI calls void uiShow(const bool show) override { if (! show) return; if (const char* const filename = uiOpenFile(false, "Open Audio File", "")) uiCustomDataChanged("file", filename); uiClosed(); } // ---------------------------------------------------------------------------------------------------------------- // Plugin dispatcher calls void idle() override { #ifndef __MOD_DEVICES__ NativePluginWithMidiPrograms::idle(); if (fInlineDisplay.pending == InlineDisplayNeedRequest) { fInlineDisplay.pending = InlineDisplayRequesting; hostQueueDrawInlineDisplay(); } #endif if (fPendingFileReload) { fPendingFileReload = fPendingFileRead = false; if (char* const filename = fFilename.releaseBufferPointer()) { loadFilename(filename); std::free(filename); } } else if (fPendingFileRead) { fPendingFileRead = false; fReader.readPoll(); } } void sampleRateChanged(const double sampleRate) override { fVolumeFilter.setSampleRate(sampleRate); if (char* const filename = fFilename.releaseBufferPointer()) { loadFilename(filename); std::free(filename); } } #ifndef __MOD_DEVICES__ const NativeInlineDisplayImageSurface* renderInlineDisplay(const uint32_t rwidth, const uint32_t height) override { CARLA_SAFE_ASSERT_RETURN(height > 4, nullptr); const uint32_t width = rwidth == height ? height * 4 : rwidth; /* NOTE the code is this function is not optimized, still learning my way through pixels... */ const size_t stride = width * 4; const size_t dataSize = stride * height; const uint pxToMove = fDoProcess ? fInlineDisplay.writtenValues : 0; uchar* data = fInlineDisplay.data; if (fInlineDisplay.dataSize != dataSize || data == nullptr) { delete[] data; data = new uchar[dataSize]; std::memset(data, 0, dataSize); fInlineDisplay.data = data; fInlineDisplay.dataSize = dataSize; } else if (pxToMove != 0) { // shift all previous values to the left for (uint w=0; w < width - pxToMove; ++w) for (uint h=0; h < height; ++h) std::memmove(&data[h * stride + w * 4], &data[h * stride + (w+pxToMove) * 4], 4); } fInlineDisplay.width = static_cast(width); fInlineDisplay.height = static_cast(height); fInlineDisplay.stride = static_cast(stride); if (pxToMove != 0) { const uint h2 = height / 2; // clear current line for (uint w=width-pxToMove; w < width; ++w) for (uint h=0; h < height; ++h) memset(&data[h * stride + w * 4], 0, 4); // draw upper/left for (uint i=0; i < pxToMove && i < 32; ++i) { const float valueL = fInlineDisplay.lastValuesL[i]; const float valueR = fInlineDisplay.lastValuesR[i]; const uint h2L = static_cast(valueL * (float)h2); const uint h2R = static_cast(valueR * (float)h2); const uint w = width - pxToMove + i; for (uint h=0; h < h2L; ++h) { // -30dB //if (valueL < 0.032f) // continue; data[(h2 - h) * stride + w * 4 + 3] = 160; // -12dB if (valueL < 0.25f) { data[(h2 - h) * stride + w * 4 + 1] = 255; } // -3dB else if (valueL < 0.70f) { data[(h2 - h) * stride + w * 4 + 2] = 255; data[(h2 - h) * stride + w * 4 + 1] = 255; } else { data[(h2 - h) * stride + w * 4 + 2] = 255; } } for (uint h=0; h < h2R; ++h) { // -30dB //if (valueR < 0.032f) // continue; data[(h2 + h) * stride + w * 4 + 3] = 160; // -12dB if (valueR < 0.25f) { data[(h2 + h) * stride + w * 4 + 1] = 255; } // -3dB else if (valueR < 0.70f) { data[(h2 + h) * stride + w * 4 + 2] = 255; data[(h2 + h) * stride + w * 4 + 1] = 255; } else { data[(h2 + h) * stride + w * 4 + 2] = 255; } } } } fInlineDisplay.writtenValues = 0; fInlineDisplay.pending = InlineDisplayNotPending; return (NativeInlineDisplayImageSurface*)(NativeInlineDisplayImageSurfaceCompat*)&fInlineDisplay; } #endif // ---------------------------------------------------------------------------------------------------------------- private: bool fLoopMode = true; #ifdef __MOD_DEVICES__ bool fHostSync = false; #else bool fHostSync = true; #endif bool fEnabled = true; bool fDoProcess = false; bool fPendingFileRead = false; bool fPendingFileReload = false; AudioFileReader::QuadMode fQuadMode = AudioFileReader::kQuad1and2; uint32_t fInternalTransportFrame = 0; float fLastPosition = 0.f; float fReadableBufferFill = 0.f; float fVolume = 1.f; AudioFileReader fReader; CarlaString fFilename; float fPreviewData[108] = {}; #ifndef __MOD_DEVICES__ NativeMidiPrograms fPrograms; struct InlineDisplay : NativeInlineDisplayImageSurfaceCompat { float lastValuesL[32] = {}; float lastValuesR[32] = {}; volatile PendingInlineDisplay pending = InlineDisplayNotPending; volatile uint8_t writtenValues = 0; InlineDisplay() : NativeInlineDisplayImageSurfaceCompat() {} ~InlineDisplay() { if (data != nullptr) { delete[] data; data = nullptr; } } CARLA_DECLARE_NON_COPYABLE(InlineDisplay) CARLA_PREVENT_HEAP_ALLOCATION } fInlineDisplay; #endif VolumeFilter fVolumeFilter; void loadFilename(const char* const filename) { CARLA_ASSERT(filename != nullptr); carla_stdout("AudioFilePlugin::loadFilename(\"%s\")", filename); fDoProcess = false; fReader.destroy(); fFilename.clear(); if (filename == nullptr || *filename == '\0') return; constexpr uint32_t kPreviewDataLen = sizeof(fPreviewData)/sizeof(float); if (fReader.loadFilename(filename, static_cast(getSampleRate()), fQuadMode, kPreviewDataLen, fPreviewData)) { fInternalTransportFrame = 0; fDoProcess = true; fFilename = filename; hostSendPreviewBufferData('f', kPreviewDataLen, fPreviewData); } } PluginClassEND(AudioFilePlugin) static const char* _get_buffer_port_name(NativePluginHandle, const uint32_t index, const bool isOutput) { if (!isOutput) return nullptr; switch (index) { case 0: return "output_1"; case 1: return "output_2"; case 2: return "Play status"; } return nullptr; } static const NativePortRange* _get_buffer_port_range(NativePluginHandle, const uint32_t index, const bool isOutput) { if (!isOutput || index != 2) return nullptr; static NativePortRange npr = { 0.f, 10.f }; return ⊀ } CARLA_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(AudioFilePlugin) }; // -------------------------------------------------------------------------------------------------------------------- CARLA_API_EXPORT void carla_register_native_plugin_audiofile(); CARLA_API_EXPORT void carla_register_native_plugin_audiofile() { static const NativePluginDescriptor audiofileDesc = { /* category */ NATIVE_PLUGIN_CATEGORY_UTILITY, /* hints */ static_cast(NATIVE_PLUGIN_IS_RTSAFE #ifndef __MOD_DEVICES__ |NATIVE_PLUGIN_HAS_INLINE_DISPLAY #endif |NATIVE_PLUGIN_HAS_UI |NATIVE_PLUGIN_NEEDS_UI_OPEN_SAVE |NATIVE_PLUGIN_REQUESTS_IDLE |NATIVE_PLUGIN_USES_CONTROL_VOLTAGE |NATIVE_PLUGIN_USES_TIME), /* supports */ NATIVE_PLUGIN_SUPPORTS_NOTHING, /* audioIns */ 0, /* audioOuts */ 2, /* midiIns */ 0, /* midiOuts */ 0, /* paramIns */ 1, /* paramOuts */ 0, /* name */ "Audio File", /* label */ "audiofile", /* maker */ "falkTX", /* copyright */ "GNU GPL v2+", AudioFilePlugin::_instantiate, AudioFilePlugin::_cleanup, AudioFilePlugin::_get_parameter_count, AudioFilePlugin::_get_parameter_info, AudioFilePlugin::_get_parameter_value, AudioFilePlugin::_get_midi_program_count, AudioFilePlugin::_get_midi_program_info, AudioFilePlugin::_set_parameter_value, AudioFilePlugin::_set_midi_program, AudioFilePlugin::_set_custom_data, AudioFilePlugin::_ui_show, AudioFilePlugin::_ui_idle, AudioFilePlugin::_ui_set_parameter_value, AudioFilePlugin::_ui_set_midi_program, AudioFilePlugin::_ui_set_custom_data, AudioFilePlugin::_activate, AudioFilePlugin::_deactivate, AudioFilePlugin::_process, AudioFilePlugin::_get_state, AudioFilePlugin::_set_state, AudioFilePlugin::_dispatcher, AudioFilePlugin::_render_inline_display, /* cvIns */ 0, /* cvOuts */ 1, AudioFilePlugin::_get_buffer_port_name, AudioFilePlugin::_get_buffer_port_range, /* ui_width */ 0, /* ui_height */ 0 }; carla_register_native_plugin(&audiofileDesc); } // --------------------------------------------------------------------------------------------------------------------