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Graph: Tidy up names
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reuk
parent
44a7987322
commit
5b355f6373
1 changed files with 53 additions and 31 deletions
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@ -23,6 +23,25 @@
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==============================================================================
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*/
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// Implementation notes:
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// On macOS, calling AudioUnitInitialize will internally call AudioObjectGetPropertyData, which
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// takes a mutex.
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// This same mutex is taken on the audio thread, before calling the audio device's IO callback.
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// This is a property of the CoreAudio implementation - we can't remove or interact directly
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// with these locks in JUCE.
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//
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// AudioProcessor instances expect that their callback lock will be taken before calling
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// processBlock or processBlockBypassed.
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// This means that, to avoid deadlocks, we *always* need to make sure that the CoreAudio mutex
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// is locked before taking the callback lock.
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// Given that we can't interact with the CoreAudio mutex directly, on the main thread we can't
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// call any function that might internally interact with CoreAudio while the callback lock is
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// taken.
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// In particular, be careful not to call `prepareToPlay` on a hosted AudioUnit from the main
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// thread while the callback lock is taken.
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// The graph implementation currently makes sure to call prepareToPlay on the main thread,
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// without taking the graph's callback lock.
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namespace juce
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{
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@ -120,6 +139,8 @@ public:
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using Connection = AudioProcessorGraph::Connection;
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using NodeAndChannel = AudioProcessorGraph::NodeAndChannel;
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static constexpr auto midiChannelIndex = AudioProcessorGraph::midiChannelIndex;
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bool addConnection (const Nodes& n, const Connection& c)
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{
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if (! canConnect (n, c))
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@ -234,7 +255,7 @@ public:
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return iter != sourcesForDestination.cend() ? iter->second : std::set<NodeAndChannel>{};
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}
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std::vector<AudioProcessorGraph::Connection> getConnections() const
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std::vector<Connection> getConnections() const
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{
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std::vector<Connection> result;
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@ -419,6 +440,8 @@ private:
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template <typename FloatType>
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struct GraphRenderSequence
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{
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using Node = AudioProcessorGraph::Node;
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struct Context
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{
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FloatType** audioBuffers;
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@ -510,7 +533,7 @@ struct GraphRenderSequence
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renderOps.push_back (DelayChannelOp { chan, delaySize });
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}
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void addProcessOp (const AudioProcessorGraph::Node::Ptr& node,
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void addProcessOp (const Node::Ptr& node,
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const Array<int>& audioChannelsUsed,
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int totalNumChans,
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int midiBuffer)
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@ -597,7 +620,7 @@ private:
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//==============================================================================
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struct ProcessOp
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{
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ProcessOp (const AudioProcessorGraph::Node::Ptr& n,
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ProcessOp (const Node::Ptr& n,
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const Array<int>& audioChannelsUsed,
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int totalNumChans, int midiBuffer)
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: node (n),
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@ -665,7 +688,7 @@ private:
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}
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template <typename Value>
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static void process (const AudioProcessorGraph::Node& node, AudioBuffer<Value>& audio, MidiBuffer& midi)
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static void process (const Node& node, AudioBuffer<Value>& audio, MidiBuffer& midi)
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{
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if (node.isBypassed() && node.getProcessor()->getBypassParameter() == nullptr)
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node.getProcessor()->processBlockBypassed (audio, midi);
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@ -673,7 +696,7 @@ private:
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node.getProcessor()->processBlock (audio, midi);
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}
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const AudioProcessorGraph::Node::Ptr node;
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const Node::Ptr node;
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AudioProcessor& processor;
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Array<int> audioChannelsToUse;
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@ -687,9 +710,12 @@ private:
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class RenderSequenceBuilder
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{
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public:
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using Node = AudioProcessorGraph::Node;
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using NodeID = AudioProcessorGraph::NodeID;
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using Connection = AudioProcessorGraph::Connection;
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using Node = AudioProcessorGraph::Node;
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using NodeID = AudioProcessorGraph::NodeID;
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using Connection = AudioProcessorGraph::Connection;
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using NodeAndChannel = AudioProcessorGraph::NodeAndChannel;
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static constexpr auto midiChannelIndex = AudioProcessorGraph::midiChannelIndex;
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template <typename RenderSequence>
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static auto build (const Nodes& n, const Connections& c)
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@ -712,7 +738,7 @@ private:
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struct AssignedBuffer
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{
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AudioProcessorGraph::NodeAndChannel channel;
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NodeAndChannel channel;
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static AssignedBuffer createReadOnlyEmpty() noexcept { return { { zeroNodeID(), 0 } }; }
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static AssignedBuffer createFree() noexcept { return { { freeNodeID(), 0 } }; }
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@ -734,12 +760,6 @@ private:
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enum { readOnlyEmptyBufferIndex = 0 };
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struct Delay
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{
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NodeID nodeID;
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int delay;
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};
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HashMap<uint32, int> delays;
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int totalLatency = 0;
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@ -961,7 +981,7 @@ private:
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int ourRenderingIndex)
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{
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auto& processor = *node.getProcessor();
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auto sources = c.getSourcesForDestination ({ node.nodeID, AudioProcessorGraph::midiChannelIndex });
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auto sources = c.getSourcesForDestination ({ node.nodeID, midiChannelIndex });
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// No midi inputs..
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if (sources.empty())
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@ -982,7 +1002,7 @@ private:
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if (midiBufferToUse >= 0)
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{
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if (isBufferNeededLater (c, ourRenderingIndex, AudioProcessorGraph::midiChannelIndex, src))
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if (isBufferNeededLater (c, ourRenderingIndex, midiChannelIndex, src))
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{
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// can't mess up this channel because it's needed later by another node, so we
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// need to use a copy of it..
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@ -1011,7 +1031,7 @@ private:
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auto sourceBufIndex = getBufferContaining (src);
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if (sourceBufIndex >= 0
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&& ! isBufferNeededLater (c, ourRenderingIndex, AudioProcessorGraph::midiChannelIndex, src))
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&& ! isBufferNeededLater (c, ourRenderingIndex, midiChannelIndex, src))
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{
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// we've found one of our input buffers that can be re-used..
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reusableInputIndex = i;
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@ -1101,7 +1121,7 @@ private:
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auto midiBufferToUse = findBufferForInputMidiChannel (c, sequence, node, ourRenderingIndex);
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if (processor.producesMidi())
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midiBuffers.getReference (midiBufferToUse).channel = { node.nodeID, AudioProcessorGraph::midiChannelIndex };
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midiBuffers.getReference (midiBufferToUse).channel = { node.nodeID, midiChannelIndex };
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delays.set (node.nodeID.uid, maxLatency + processor.getLatencySamples());
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@ -1122,7 +1142,7 @@ private:
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return buffers.size() - 1;
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}
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int getBufferContaining (AudioProcessorGraph::NodeAndChannel output) const noexcept
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int getBufferContaining (NodeAndChannel output) const noexcept
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{
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int i = 0;
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@ -1149,7 +1169,7 @@ private:
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bool isBufferNeededLater (const Connections& c,
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int stepIndexToSearchFrom,
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int inputChannelOfIndexToIgnore,
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AudioProcessorGraph::NodeAndChannel output) const
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NodeAndChannel output) const
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{
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while (stepIndexToSearchFrom < orderedNodes.size())
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{
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@ -1157,9 +1177,9 @@ private:
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if (output.isMIDI())
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{
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if (inputChannelOfIndexToIgnore != AudioProcessorGraph::midiChannelIndex
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&& c.isConnected ({ { output.nodeID, AudioProcessorGraph::midiChannelIndex },
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{ node->nodeID, AudioProcessorGraph::midiChannelIndex } }))
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if (inputChannelOfIndexToIgnore != midiChannelIndex
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&& c.isConnected ({ { output.nodeID, midiChannelIndex },
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{ node->nodeID, midiChannelIndex } }))
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return true;
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}
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else
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@ -1205,6 +1225,8 @@ private:
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class RenderSequence
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{
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public:
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using AudioGraphIOProcessor = AudioProcessorGraph::AudioGraphIOProcessor;
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RenderSequence (PrepareSettings s, const Nodes& n, const Connections& c)
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: RenderSequence (s,
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RenderSequenceBuilder::build<GraphRenderSequence<float>> (n, c),
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@ -1222,12 +1244,12 @@ public:
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renderSequenceD.perform (audio, midi, playHead);
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}
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void processIO (AudioProcessorGraph::AudioGraphIOProcessor& io, AudioBuffer<float>& audio, MidiBuffer& midi)
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void processIO (AudioGraphIOProcessor& io, AudioBuffer<float>& audio, MidiBuffer& midi)
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{
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processIOBlock (io, renderSequenceF, audio, midi);
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}
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void processIO (AudioProcessorGraph::AudioGraphIOProcessor& io, AudioBuffer<double>& audio, MidiBuffer& midi)
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void processIO (AudioGraphIOProcessor& io, AudioBuffer<double>& audio, MidiBuffer& midi)
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{
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processIOBlock (io, renderSequenceD, audio, midi);
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}
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@ -1237,14 +1259,14 @@ public:
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private:
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template <typename FloatType, typename SequenceType>
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static void processIOBlock (AudioProcessorGraph::AudioGraphIOProcessor& io,
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static void processIOBlock (AudioGraphIOProcessor& io,
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SequenceType& sequence,
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AudioBuffer<FloatType>& buffer,
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MidiBuffer& midiMessages)
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{
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switch (io.getType())
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{
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case AudioProcessorGraph::AudioGraphIOProcessor::audioOutputNode:
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case AudioGraphIOProcessor::audioOutputNode:
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{
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auto&& currentAudioOutputBuffer = sequence.currentAudioOutputBuffer;
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@ -1254,7 +1276,7 @@ private:
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break;
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}
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case AudioProcessorGraph::AudioGraphIOProcessor::audioInputNode:
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case AudioGraphIOProcessor::audioInputNode:
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{
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auto* currentInputBuffer = sequence.currentAudioInputBuffer;
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@ -1264,11 +1286,11 @@ private:
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break;
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}
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case AudioProcessorGraph::AudioGraphIOProcessor::midiOutputNode:
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case AudioGraphIOProcessor::midiOutputNode:
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sequence.currentMidiOutputBuffer.addEvents (midiMessages, 0, buffer.getNumSamples(), 0);
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break;
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case AudioProcessorGraph::AudioGraphIOProcessor::midiInputNode:
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case AudioGraphIOProcessor::midiInputNode:
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midiMessages.addEvents (*sequence.currentMidiInputBuffer, 0, buffer.getNumSamples(), 0);
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break;
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