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/* |
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Copyright (C) 2010 Christian Schoenebeck |
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*/ |
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|
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#include "EffectFactory.h" |
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#include "LadspaEffect.h" |
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#include "../common/Path.h" |
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#include "../common/IDGenerator.h" |
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#include <algorithm> |
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|
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namespace LinuxSampler { |
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|
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namespace { |
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|
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//////////////////////////////////////////////////////////////////////////// |
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// class 'EffectInfos' |
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|
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class EffectInfos { |
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public: |
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EffectInfos(); |
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~EffectInfos(); |
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void Update(); |
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uint Count(); |
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EffectInfo* GetEffectInfo(uint index); |
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private: |
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std::vector<EffectInfo*> infos; |
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bool bInitialized; |
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}; |
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|
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EffectInfos::EffectInfos() : bInitialized(false) { |
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} |
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|
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EffectInfos::~EffectInfos() { |
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for (int i = 0; i < infos.size(); i++) delete infos[i]; |
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} |
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|
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void EffectInfos::Update() { |
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// clear out all old effect infos |
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for (int i = 0; i < infos.size(); i++) delete infos[i]; |
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|
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// scan for LADSPA effects |
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infos = LadspaEffect::AvailableEffects(); |
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} |
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|
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uint EffectInfos::Count() { |
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if (!bInitialized) { |
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Update(); |
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bInitialized = true; |
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} |
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return infos.size(); |
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} |
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|
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EffectInfo* EffectInfos::GetEffectInfo(uint index) { |
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if (index >= infos.size()) return NULL; |
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return infos[index]; |
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} |
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|
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|
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//////////////////////////////////////////////////////////////////////////// |
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// private static variables |
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|
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EffectInfos effectInfos; |
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|
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std::vector<Effect*> vEffectInstances; |
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|
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IDGenerator idGenerator; |
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|
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} |
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|
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|
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//////////////////////////////////////////////////////////////////////////// |
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// class 'EffectFactory' |
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|
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String EffectFactory::AvailableEffectSystemsAsString() { |
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return "LADSPA"; |
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} |
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|
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uint EffectFactory::AvailableEffectsCount() { |
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return effectInfos.Count(); |
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} |
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|
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EffectInfo* EffectFactory::GetEffectInfo(uint index) { |
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return effectInfos.GetEffectInfo(index); |
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} |
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|
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static String _toLower(String s) { |
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std::transform(s.begin(), s.end(), s.begin(), ::tolower); |
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return s; |
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} |
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|
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static String _stripFileExtension(String sFileName) { |
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#if defined(WIN32) |
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Path p = Path::fromWindows(sFileName); |
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return p.stripLastName() + "\\" + p.getBaseName(); |
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#else |
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Path p = Path::fromPosix(sFileName); |
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return p.stripLastName() + "/" + p.getBaseName(); |
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#endif |
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} |
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|
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static String _stripFilePath(String sFileName) { |
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#if defined(WIN32) |
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Path p = Path::fromWindows(sFileName); |
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#else |
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Path p = Path::fromPosix(sFileName); |
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#endif |
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return p.getName(); |
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} |
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|
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static bool _moduleNameMatches(String name1, String name2, int iModuleMatchFlags) { |
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if (iModuleMatchFlags == EffectFactory::MODULE_IGNORE_ALL) return true; |
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if (iModuleMatchFlags == EffectFactory::MODULE_MATCH_EXACTLY) return name1 == name2; |
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if (iModuleMatchFlags & EffectFactory::MODULE_IGNORE_CASE) { |
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name1 = _toLower(name1); |
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name2 = _toLower(name2); |
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} |
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if (iModuleMatchFlags & EffectFactory::MODULE_IGNORE_EXTENSION) { |
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name1 = _stripFileExtension(name1); |
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name2 = _stripFileExtension(name2); |
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} |
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if (iModuleMatchFlags & EffectFactory::MODULE_IGNORE_PATH) { |
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name1 = _stripFilePath(name1); |
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name2 = _stripFilePath(name2); |
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} |
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return name1 == name2; |
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} |
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|
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EffectInfo* EffectFactory::GetEffectInfo(String effectSystem, String module, String effectName, int iModuleMatchFlags) { |
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for (int i = 0; i < effectInfos.Count(); i++) { |
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EffectInfo* pEffectInfo = effectInfos.GetEffectInfo(i); |
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if (pEffectInfo->EffectSystem() == effectSystem && |
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_moduleNameMatches(pEffectInfo->Module(), module, iModuleMatchFlags) && |
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pEffectInfo->Name() == effectName |
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) { |
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return pEffectInfo; |
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} |
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} |
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return NULL; |
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} |
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|
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Effect* EffectFactory::Create(EffectInfo* pEffectInfo) throw (Exception) { |
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Effect* pEffect = NULL; |
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try { |
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if (pEffectInfo->EffectSystem() == "LADSPA") { |
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pEffect = new LadspaEffect(pEffectInfo); |
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} else { |
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throw Exception( |
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"Effect system '" + pEffectInfo->EffectSystem() + |
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"' not supported" |
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); |
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} |
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} catch (Exception e) { |
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throw Exception("Could not create effect: " + e.Message()); |
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} catch (...) { |
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throw Exception("Could not create effect: unknown exception"); |
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} |
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if (!pEffect) { |
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// should never happen |
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throw Exception("Oops, EffectFactory bug: !pEffect"); |
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} |
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|
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// stick a new unique effect ID to the effect instance |
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const int id = idGenerator.create(); |
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if (id < 0) { |
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delete pEffect; |
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throw Exception("Could not generate a new effect ID, whole ID value range is occupied!"); |
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} |
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pEffect->SetId(id); |
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|
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vEffectInstances.push_back(pEffect); |
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return pEffect; |
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} |
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|
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void EffectFactory::Destroy(Effect* pEffect) throw (Exception) { |
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// check if effect is still in use |
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if (pEffect->Parent()) |
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throw Exception("effect still in use"); |
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|
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// now delete effect |
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for (int i = 0; i < vEffectInstances.size(); i++) { |
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if (vEffectInstances[i] == pEffect) { |
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vEffectInstances.erase(vEffectInstances.begin() + i); |
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|
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// free the effect's ID |
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idGenerator.destroy(pEffect->ID()); |
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|
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delete pEffect; |
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} |
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} |
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} |
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|
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void EffectFactory::UpdateAvailableEffects() { |
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effectInfos.Update(); |
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} |
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|
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uint EffectFactory::EffectInstancesCount() { |
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return vEffectInstances.size(); |
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} |
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|
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Effect* EffectFactory::GetEffectInstance(uint index) { |
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if (index >= vEffectInstances.size()) return NULL; |
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return vEffectInstances[index]; |
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} |
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|
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Effect* EffectFactory::GetEffectInstanceByID(int id) { |
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for (int i = 0; i < vEffectInstances.size(); i++) { |
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if (vEffectInstances[i]->ID() == id) |
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return vEffectInstances[i]; |
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} |
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return NULL; |
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} |
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|
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} // namespace LinuxSampler |