diff options
| author | pepper <peppersclothescult@gmail.com> | 2015-01-10 21:32:32 -0800 |
|---|---|---|
| committer | pepper <peppersclothescult@gmail.com> | 2015-01-10 21:32:32 -0800 |
| commit | d53fa8a169832563c62262078b8d2ffe5cab8473 (patch) | |
| tree | b911d06d357d009c976709780f10e92ce915228a /source/plugin/PluginChain.h | |
first
Diffstat (limited to 'source/plugin/PluginChain.h')
| -rw-r--r-- | source/plugin/PluginChain.h | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/source/plugin/PluginChain.h b/source/plugin/PluginChain.h new file mode 100644 index 0000000..62c58a1 --- /dev/null +++ b/source/plugin/PluginChain.h @@ -0,0 +1,165 @@ +// +// PluginChain.h - MrsWatson +// Created by Nik Reiman on 1/3/12. +// Copyright (c) 2012 Teragon Audio. All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are met: +// +// * Redistributions of source code must retain the above copyright notice, +// this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above copyright notice, +// this list of conditions and the following disclaimer in the documentation +// and/or other materials provided with the distribution. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" +// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE +// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +// POSSIBILITY OF SUCH DAMAGE. +// + +#ifndef MrsWatson_PluginChain_h +#define MrsWatson_PluginChain_h + +#include "app/ReturnCodes.h" +#include "base/LinkedList.h" +#include "plugin/Plugin.h" +#include "plugin/PluginPreset.h" +#include "time/TaskTimer.h" + +#define MAX_PLUGINS 8 +#define CHAIN_STRING_PLUGIN_SEPARATOR ';' +#define CHAIN_STRING_PROGRAM_SEPARATOR ',' + +typedef struct { + unsigned int numPlugins; + Plugin *plugins; + PluginPreset *presets; + TaskTimer *audioTimers; + TaskTimer *midiTimers; + + // Private fields + boolByte _realtime; + TaskTimer _realtimeTimer; +} PluginChainMembers; + +/** + * Class which holds multiple plugins which process audio in serial. Only one + * instrument may be present in a plugin chain. + */ +typedef PluginChainMembers *PluginChain; + +/** + * Get a reference to the global plugin chain instance. + * @return Reference to global plugin chain, or NULL if the global instance has + * not yet been initialized. + */ +PluginChain getPluginChain(void); + +/** + * Initialize the global plugin chain instance. Should be called fairly + * early in the program initialization. + */ +void initPluginChain(void); + +/** + * Append a plugin to the end of the chain + * @param self + * @param plugin Plugin to add + * @param preset Preset to be loaded into the plugin. If no preset is desired, + * passed NULL here. + * @return True if the plugin could be added to the end of the chain + */ +boolByte pluginChainAppend(PluginChain self, Plugin plugin, PluginPreset preset); + +// TODO: Deprecate and remove this function +boolByte pluginChainAddFromArgumentString(PluginChain self, const CharString argumentString, const CharString userSearchPath); + +/** + * Open and initialize all plugins in the chain. + * @param self + * @return RETURN_CODE_SUCCESS on success, other code on failure + */ +ReturnCodes pluginChainInitialize(PluginChain self); + +/** + * Inspect each plugin in the chain + * @param self + */ +void pluginChainInspect(PluginChain self); + +/** + * Get the maximum amount of tail time (post*processing time with empty input) + * needed for the chain. This is essentially the largest tail time value for any + * plug-in in the chain. + * @param self + * @return Maximum tail time, in milliseconds + */ +int pluginChainGetMaximumTailTimeInMs(PluginChain self); + +/** + * Get the total processing delay in frames. + * @param self + * @return Total processing delay, in frames. + */ +unsigned long pluginChainGetProcessingDelay(PluginChain self); + +/** + * Set parameters on the first plugin in a chain. + * @param self + * @param parameters List of parameters to be applied + * @return True if all parameters were set, false otherwise + */ +boolByte pluginChainSetParameters(PluginChain self, const LinkedList parameters); + +/** + * Set realtime mode for the plugin chain. When set, calls to pluginChainProcessAudio() + * will sleep for the additional time required to process the block in realtime. + * @param realtime True to enable realtime mode, false to disable (default) + * @param self + */ +void pluginChainSetRealtime(PluginChain self, boolByte realtime); + +/** + * Prepare each plugin in the chain for processing. This should be called before + * the first block of audio is sent to the chain. + * @param self + */ +void pluginChainPrepareForProcessing(PluginChain self); + +/** + * Process a single block of samples through each plugin in the chain. + * @param self + * @param inBuffer Input sample block + * @param outBuffer Output sample block + */ +void pluginChainProcessAudio(PluginChain self, SampleBuffer inBuffer, SampleBuffer outBuffer); + +/** + * Send a list of MIDI events to be processed by the chain. Currently, only the + * first plugin in the chain will receive these events. + * @param self + * @param midiEvents List of events to process + */ +void pluginChainProcessMidi(PluginChain self, LinkedList midiEvents); + +/** + * Close all plugins in the chain + * @param self + */ +void pluginChainShutdown(PluginChain self); + +/** + * Free the plugin chain and all associated resources (including all plugins) + * @param self + */ +void freePluginChain(PluginChain self); + +#endif |
