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JuceFxEngine: requestEditor/pumpEditorQueue/isEditorOpen/takeCapturedState, queue thread-safe, thuc thi tren GUI thread; shutdown() dong editor truoc graph.clear(); prepare() map slot->processor. juce_fx_bridge link juce_gui_basics; target juce_fx_selftest (khong ship) verify open/close/capture voi VST3 that — PASS tren Focusrite fast-compressor_x64. Tien de M2 (GUI thread + host window).
517 lines
20 KiB
C++
517 lines
20 KiB
C++
// native_bridge/juce_fx/JuceFxEngine.cpp
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// Implementation: AudioProcessorGraph với input/output node — chain rỗng G1.
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// G2: nạp VST3 theo fx_chain (path, preset_b64, bypass), chèn node giữa
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// input/output; latency thật = graph.getLatencySamples() (PDC nội bộ graph).
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#include "JuceFxEngine.h"
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#include <juce_audio_processors/juce_audio_processors.h>
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#include "sheredom_json.h"
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#include <algorithm>
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#include <array>
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#include <cstdint>
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#include <cstdlib>
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#include <cstring>
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#include <iostream>
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#include <mutex>
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#include <string>
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#include <vector>
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namespace {
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// --- base64 decode (RFC 4648) — như RenderFxJob.cpp -------------------------
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int b64val(unsigned char c) {
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if (c >= 'A' && c <= 'Z') return (int)(c - 'A');
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if (c >= 'a' && c <= 'z') return (int)(c - 'a') + 26;
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if (c >= '0' && c <= '9') return (int)(c - '0') + 52;
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if (c == '+') return 62;
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if (c == '/') return 63;
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return -1;
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}
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bool base64Decode(const std::string& in, std::vector<uint8_t>& out) {
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out.clear();
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out.reserve((in.size() / 4) * 3);
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uint32_t acc = 0;
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int bits = 0;
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for (unsigned char ch : in) {
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if (ch == '=' || ch == '\n' || ch == '\r' || ch == ' ') continue;
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int v = b64val(ch);
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if (v < 0) return false;
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acc = (acc << 6) | (uint32_t)v;
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bits += 6;
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if (bits >= 8) {
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bits -= 8;
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out.push_back((uint8_t)((acc >> bits) & 0xFF));
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}
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}
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return true;
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}
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// --- sheredom helpers (giống RenderFxJob.cpp) -------------------------------
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const json_object_element_s* jMember(const json_object_s* o, const char* key) {
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for (const json_object_element_s* e = o ? o->start : nullptr; e; e = e->next)
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if (e->name && e->name->string && std::strcmp(e->name->string, key) == 0)
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return e;
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return nullptr;
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}
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std::string jString(const json_object_s* o, const char* key, const std::string& def) {
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const json_object_element_s* m = jMember(o, key);
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if (m && m->value && m->value->type == json_type_string) {
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const auto* s = static_cast<const json_string_s*>(m->value->payload);
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return std::string(s->string, s->string_size);
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}
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return def;
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}
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bool jBool(const json_object_s* o, const char* key, bool def) {
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const json_object_element_s* m = jMember(o, key);
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if (m && m->value) {
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if (m->value->type == json_type_true) return true;
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if (m->value->type == json_type_false) return false;
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}
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return def;
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}
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int64_t jInt64(const json_object_s* o, const char* key, int64_t def) {
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const json_object_element_s* m = jMember(o, key);
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if (m && m->value && m->value->type == json_type_number) {
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const auto* n = static_cast<const json_number_s*>(m->value->payload);
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return (int64_t)std::strtoll(n->number, nullptr, 10);
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}
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return def;
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}
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uint32_t jUInt32(const json_object_s* o, const char* key, uint32_t def) {
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const json_object_element_s* m = jMember(o, key);
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if (m && m->value && m->value->type == json_type_number) {
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const auto* n = static_cast<const json_number_s*>(m->value->payload);
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return (uint32_t)std::strtoul(n->number, nullptr, 10);
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}
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return def;
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}
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std::string jsonEscape(const std::string& s) {
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std::string out;
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out.reserve(s.size());
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for (char c : s) {
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if (c == '\\' || c == '"') { out += '\\'; out += c; }
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else out += c;
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}
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return out;
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}
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// --- VST3 description cache -------------------------------------------------
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// findAllTypesForFile() slow path load DLL + quét factory + instantiate
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// component (hàng trăm ms/plugin mỗi session). createInstanceFromDescription
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// chỉ cần {fileOrIdentifier, name, uniqueId, deprecatedUid} —
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// findClassMatchingDescription so name+uid trên class info, KHÔNG instantiate.
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// Cache JSON theo path+mtime: hit → dựng desc trực tiếp, bỏ qua scan.
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struct DescCacheEntry {
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std::string path;
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int64_t mtime = 0;
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std::string name;
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uint32_t uniqueId = 0;
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uint32_t deprecatedUid = 0;
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};
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std::string descCachePath() {
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return juce::File::getSpecialLocation(juce::File::userApplicationDataDirectory)
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.getChildFile("SonicForgeDAW")
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.getChildFile("juce_vst3_desc_cache.json")
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.getFullPathName()
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.toStdString();
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}
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std::vector<DescCacheEntry> loadDescCache() {
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std::vector<DescCacheEntry> out;
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const juce::File f(descCachePath());
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if (!f.existsAsFile()) return out;
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const juce::String content = f.loadFileAsString();
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json_value_s* root = json_parse(content.toRawUTF8(), content.getNumBytesAsUTF8());
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if (root && root->type == json_type_array) {
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const auto* arr = static_cast<const json_array_s*>(root->payload);
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for (const json_array_element_s* el = arr->start; el; el = el->next) {
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const json_value_s* v = el->value;
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if (!v || v->type != json_type_object) continue;
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const auto* o = static_cast<const json_object_s*>(v->payload);
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DescCacheEntry e;
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e.path = jString(o, "path", "");
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e.mtime = jInt64(o, "mtime", 0);
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e.name = jString(o, "name", "");
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e.uniqueId = jUInt32(o, "unique_id", 0);
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e.deprecatedUid = jUInt32(o, "deprecated_uid", 0);
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if (!e.path.empty() && !e.name.empty())
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out.push_back(std::move(e));
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}
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}
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if (root) free(root);
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return out;
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}
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void saveDescCache(const std::vector<DescCacheEntry>& cache) {
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std::string json = "[\n";
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for (size_t i = 0; i < cache.size(); ++i) {
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const auto& e = cache[i];
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if (i) json += ",\n";
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json += " {\"path\":\"" + jsonEscape(e.path) +
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"\",\"mtime\":" + std::to_string(e.mtime) +
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",\"name\":\"" + jsonEscape(e.name) +
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"\",\"unique_id\":" + std::to_string(e.uniqueId) +
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",\"deprecated_uid\":" + std::to_string(e.deprecatedUid) + "}";
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}
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json += "\n]\n";
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try {
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const juce::File f(descCachePath());
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f.getParentDirectory().createDirectory();
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f.replaceWithText(juce::String(json));
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} catch (...) {
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// Cache lỗi không được làm hỏng prepare() — lần sau scan lại.
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}
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}
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} // namespace
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struct JuceFxEngine::Slot {
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std::string type;
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std::string path;
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std::string presetB64;
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bool bypass = false;
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};
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struct JuceFxEngine::Impl {
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juce::AudioProcessorGraph graph;
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juce::AudioBuffer<float> buf;
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uint32_t sampleRate = 0;
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uint32_t blockSize = 0;
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bool prepared = false;
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std::vector<Slot> slots; // chain đã parse (thứ tự slot)
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std::vector<juce::AudioProcessorGraph::Node::Ptr> pluginNodes; // node theo slot (null = bỏ qua)
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std::vector<uint32_t> slotLatencies; // latency thật từng slot (0 = skip/bypass/fail)
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uint32_t totalLatency = 0;
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// ── Editor host (M1): slot -> processor + editor (chỉ GUI thread đụng).
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struct SlotEditor {
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juce::AudioProcessor* proc = nullptr; // processor slot (không sở hữu)
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std::unique_ptr<juce::AudioProcessorEditor> editor; // sở hữu editor (GUI thread)
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bool open = false;
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std::string captured; // state capture gần nhất (raw)
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};
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struct EditorCmd {
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uint32_t slot = 0;
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EditorAction action = EditorAction::Open;
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int w = 0, h = 0;
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};
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std::vector<SlotEditor> editors; // theo slot (dựng lại mỗi prepare)
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std::vector<EditorCmd> editorQueue; // lệnh chờ (requestEditor)
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mutable std::mutex editorMutex; // editors + captured
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std::mutex queueMutex; // editorQueue
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};
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JuceFxEngine::JuceFxEngine() : impl_(std::make_unique<Impl>()) {}
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JuceFxEngine::~JuceFxEngine() { shutdown(); }
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void JuceFxEngine::requestEditor(uint32_t slot, EditorAction action, int w, int h) {
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// Chỉ xếp lệnh (thread-safe); validation + thực thi ở pumpEditorQueue()
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// trên GUI thread — không log ở đây (có thể gọi từ thread khác).
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std::lock_guard<std::mutex> lk(impl_->queueMutex);
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impl_->editorQueue.push_back({slot, action, w, h});
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}
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bool JuceFxEngine::pumpEditorQueue() {
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std::vector<Impl::EditorCmd> cmds;
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{
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std::lock_guard<std::mutex> lk(impl_->queueMutex);
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if (impl_->editorQueue.empty()) return false;
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cmds.swap(impl_->editorQueue);
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}
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bool any = false;
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for (const auto& c : cmds) {
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std::lock_guard<std::mutex> lk(impl_->editorMutex);
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if (c.slot >= impl_->editors.size()) {
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std::cerr << "[JuceFxEngine] editor cmd slot " << c.slot
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<< " ngoài chain (" << impl_->editors.size()
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<< ") — bỏ qua" << std::endl;
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continue;
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}
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auto& se = impl_->editors[c.slot];
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if (!se.proc) {
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if (c.action == EditorAction::Open)
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std::cerr << "[JuceFxEngine] slot " << c.slot
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<< " không có processor (bypass/fail) — không mở editor"
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<< std::endl;
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continue;
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}
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switch (c.action) {
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case EditorAction::Open: {
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if (!se.editor) {
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juce::AudioProcessorEditor* ed = se.proc->createEditorIfNeeded();
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if (!ed) {
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std::cerr << "[JuceFxEngine] slot " << c.slot
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<< " createEditorIfNeeded null (plugin không có UI)"
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<< std::endl;
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break;
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}
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se.editor.reset(ed); // engine sở hữu editor (M1)
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se.open = true;
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if (c.w > 0 && c.h > 0) se.editor->setSize(c.w, c.h);
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std::cerr << "[JuceFxEngine] slot " << c.slot << " editor open "
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<< se.editor->getWidth() << "x"
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<< se.editor->getHeight() << std::endl;
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} else if (c.w > 0 && c.h > 0) {
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se.editor->setSize(c.w, c.h);
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}
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any = true;
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break;
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}
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case EditorAction::Close: {
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if (se.editor) {
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se.editor.reset(); // ~editor -> processor->editorBeingDeleted
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se.open = false;
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std::cerr << "[JuceFxEngine] slot " << c.slot
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<< " editor closed" << std::endl;
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any = true;
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}
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break;
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}
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case EditorAction::Show:
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case EditorAction::Hide: {
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// M1: editor chưa attach host window — setVisible chưa đủ. M2
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// (GUI thread + host window) sẽ xử lý show/hide thật.
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if (se.editor) {
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se.editor->setVisible(c.action == EditorAction::Show);
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any = true;
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}
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break;
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}
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case EditorAction::Resize: {
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if (se.editor && c.w > 0 && c.h > 0) {
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se.editor->setSize(c.w, c.h);
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any = true;
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}
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break;
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}
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case EditorAction::Capture: {
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juce::MemoryBlock mb;
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se.proc->getStateInformation(mb);
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se.captured.assign(static_cast<const char*>(mb.getData()), mb.getSize());
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std::cerr << "[JuceFxEngine] slot " << c.slot << " captured "
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<< se.captured.size() << " bytes" << std::endl;
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any = true;
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break;
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}
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}
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}
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return any;
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}
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bool JuceFxEngine::isEditorOpen(uint32_t slot) const {
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std::lock_guard<std::mutex> lk(impl_->editorMutex);
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if (slot >= impl_->editors.size()) return false;
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return impl_->editors[slot].open;
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}
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std::string JuceFxEngine::takeCapturedState(uint32_t slot) {
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std::lock_guard<std::mutex> lk(impl_->editorMutex);
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if (slot >= impl_->editors.size()) return {};
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std::string s = std::move(impl_->editors[slot].captured);
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impl_->editors[slot].captured.clear();
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return s;
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}
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void JuceFxEngine::shutdown() {
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// Đóng mọi editor TRƯỚC khi clear graph — JUCE assert editor phải xoá
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// trước processor. Editor ops ở đây chạy trên thread gọi shutdown; M1
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// chưa có GUI thread đồng thời nên an toàn. Khi M2 có GUI thread: chain
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// đổi phải gửi ed.close trước khi re-prepare (M4/M5).
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{
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std::lock_guard<std::mutex> lk(impl_->editorMutex);
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for (auto& se : impl_->editors) {
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if (se.editor) se.editor.reset(); // ~editor -> processor->editorBeingDeleted
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se.proc = nullptr;
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se.open = false;
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se.captured.clear();
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}
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impl_->editors.clear();
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}
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if (impl_->prepared) {
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impl_->graph.releaseResources();
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impl_->graph.clear();
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impl_->prepared = false;
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impl_->sampleRate = 0;
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impl_->blockSize = 0;
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}
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impl_->pluginNodes.clear();
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impl_->slotLatencies.assign(impl_->slots.size(), 0);
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impl_->totalLatency = 0;
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}
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void JuceFxEngine::setChain(const std::string& chainJson) {
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// Parse mảng JSON fx_chain: [ {type,path,preset_b64,bypass}, ... ].
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impl_->slots.clear();
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json_value_s* root = json_parse(chainJson.data(), chainJson.size());
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if (root && root->type == json_type_array) {
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const auto* arr = static_cast<const json_array_s*>(root->payload);
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for (const json_array_element_s* el = arr->start; el; el = el->next) {
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const json_value_s* v = el->value;
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if (!v || v->type != json_type_object) continue;
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const auto* o = static_cast<const json_object_s*>(v->payload);
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Slot s;
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s.type = jString(o, "type", "");
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s.path = jString(o, "path", "");
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s.presetB64 = jString(o, "preset_b64", "");
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s.bypass = jBool(o, "bypass", false);
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impl_->slots.push_back(std::move(s));
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}
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}
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if (root) free(root);
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}
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void JuceFxEngine::prepare(uint32_t sampleRate, uint32_t blockSize) {
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if (impl_->prepared && impl_->sampleRate == sampleRate &&
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impl_->blockSize == blockSize)
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return; // không đổi — giữ graph
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shutdown();
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impl_->sampleRate = sampleRate;
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impl_->blockSize = blockSize;
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impl_->graph.setPlayConfigDetails(2, 2, (double)sampleRate, (int)blockSize);
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auto& g = impl_->graph;
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const auto inNode = g.addNode(std::make_unique<
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juce::AudioProcessorGraph::AudioGraphIOProcessor>(
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juce::AudioProcessorGraph::AudioGraphIOProcessor::audioInputNode));
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const auto outNode = g.addNode(std::make_unique<
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juce::AudioProcessorGraph::AudioGraphIOProcessor>(
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juce::AudioProcessorGraph::AudioGraphIOProcessor::audioOutputNode));
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using NCh = juce::AudioProcessorGraph::NodeAndChannel;
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using Conn = juce::AudioProcessorGraph::Connection;
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// G2: nạp VST3 theo chain — nối nối tiếp in -> p0 -> p1 -> ... -> out.
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// Slot bypass / type khác vst3 / load fail → passthrough (latency 0).
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impl_->pluginNodes.assign(impl_->slots.size(), nullptr);
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impl_->slotLatencies.assign(impl_->slots.size(), 0);
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static std::vector<DescCacheEntry> descCache = loadDescCache();
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bool cacheDirty = false;
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juce::AudioProcessorGraph::Node::Ptr prev = inNode;
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for (size_t i = 0; i < impl_->slots.size(); ++i) {
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const Slot& s = impl_->slots[i];
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if (s.bypass || (s.type != "vst3" && s.type != "vst") || s.path.empty())
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continue;
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juce::VST3PluginFormat fmt;
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juce::OwnedArray<juce::PluginDescription> descs;
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const juce::File pluginFile(s.path);
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const int64_t mtime = pluginFile.getLastModificationTime().toMilliseconds();
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const DescCacheEntry* hit = nullptr;
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for (const auto& e : descCache)
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if (e.path == s.path && e.mtime == mtime) { hit = &e; break; }
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if (hit) {
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// Cache hit: dựng desc (name+uid) — không scan factory, không
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// instantiate 2 lần như findAllTypesForFile slow path.
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auto* d = new juce::PluginDescription();
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d->fileOrIdentifier = juce::String(hit->path);
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d->name = juce::String(hit->name);
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d->uniqueId = hit->uniqueId;
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d->deprecatedUid = hit->deprecatedUid;
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d->pluginFormatName = "VST3";
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descs.add(d);
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} else {
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fmt.findAllTypesForFile(descs, pluginFile.getFullPathName());
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if (!descs.isEmpty()) {
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const auto* d = descs.getFirst();
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DescCacheEntry e;
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e.path = s.path;
|
|
e.mtime = mtime;
|
|
e.name = d->name.toStdString();
|
|
e.uniqueId = d->uniqueId;
|
|
e.deprecatedUid = d->deprecatedUid;
|
|
descCache.push_back(std::move(e));
|
|
cacheDirty = true;
|
|
}
|
|
}
|
|
if (descs.isEmpty()) {
|
|
std::cerr << "[JuceFxEngine] slot " << i << " no VST3 desc: "
|
|
<< s.path << std::endl;
|
|
continue;
|
|
}
|
|
auto inst = fmt.createInstanceFromDescription(*descs.getFirst(),
|
|
(double)sampleRate,
|
|
(int)blockSize);
|
|
if (!inst) {
|
|
std::cerr << "[JuceFxEngine] slot " << i << " createInstance fail: "
|
|
<< s.path << std::endl;
|
|
continue;
|
|
}
|
|
if (!s.presetB64.empty()) {
|
|
std::vector<uint8_t> bytes;
|
|
if (base64Decode(s.presetB64, bytes) && !bytes.empty()) {
|
|
juce::MemoryBlock mb(bytes.data(), bytes.size());
|
|
if (juce::VST3PluginFormat::setStateFromVSTPresetFile(inst.get(), mb))
|
|
std::cerr << "[JuceFxEngine] slot " << i << " preset applied" << std::endl;
|
|
else
|
|
std::cerr << "[JuceFxEngine] slot " << i << " preset FAILED" << std::endl;
|
|
}
|
|
}
|
|
auto node = g.addNode(std::unique_ptr<juce::AudioProcessor>(std::move(inst)));
|
|
impl_->pluginNodes[i] = node;
|
|
for (int ch = 0; ch < 2; ++ch) {
|
|
NCh src; src.nodeID = prev->nodeID; src.channelIndex = ch;
|
|
NCh dst; dst.nodeID = node->nodeID; dst.channelIndex = ch;
|
|
g.addConnection(Conn(src, dst));
|
|
}
|
|
prev = node;
|
|
}
|
|
if (cacheDirty) saveDescCache(descCache);
|
|
|
|
// Editor mapping: slot -> processor (Reaper-style — editor dùng ĐÚNG
|
|
// instance trong graph). Editors cũ đã đóng ở shutdown() khi graph đổi;
|
|
// chain không đổi (early-return trên) thì editors giữ nguyên + proc sống.
|
|
impl_->editors.clear();
|
|
impl_->editors.resize(impl_->slots.size());
|
|
for (size_t i = 0; i < impl_->pluginNodes.size(); ++i)
|
|
if (impl_->pluginNodes[i])
|
|
impl_->editors[i].proc = impl_->pluginNodes[i]->getProcessor();
|
|
|
|
for (int ch = 0; ch < 2; ++ch) {
|
|
NCh src; src.nodeID = prev->nodeID; src.channelIndex = ch;
|
|
NCh dst; dst.nodeID = outNode->nodeID; dst.channelIndex = ch;
|
|
g.addConnection(Conn(src, dst));
|
|
}
|
|
|
|
g.prepareToPlay((double)sampleRate, (int)(blockSize * 4)); // batch tối đa 4 block
|
|
impl_->buf.setSize(2, (int)(blockSize * 4), false, false, true);
|
|
|
|
// Latency thật từng slot sau prepareToPlay (plugin set trong prepare).
|
|
for (size_t i = 0; i < impl_->pluginNodes.size(); ++i)
|
|
if (impl_->pluginNodes[i])
|
|
impl_->slotLatencies[i] =
|
|
(uint32_t)impl_->pluginNodes[i]->getProcessor()->getLatencySamples();
|
|
impl_->totalLatency = (uint32_t)g.getLatencySamples();
|
|
impl_->prepared = true;
|
|
}
|
|
|
|
void JuceFxEngine::process(float* inL, float* inR, uint32_t n) {
|
|
if (!impl_->prepared || n == 0) return;
|
|
auto& b = impl_->buf;
|
|
b.setSize(2, (int)n, false, false, true);
|
|
b.copyFrom(0, 0, inL, (int)n);
|
|
b.copyFrom(1, 0, inR, (int)n);
|
|
juce::MidiBuffer midi;
|
|
impl_->graph.processBlock(b, midi);
|
|
// Graph PDC nội bộ: output đã align dry/wet — copy về in-place như contract.
|
|
const auto* outL = b.getReadPointer(0);
|
|
const auto* outR = b.getReadPointer(1);
|
|
std::copy(outL, outL + n, inL);
|
|
std::copy(outR, outR + n, inR);
|
|
}
|
|
|
|
uint32_t JuceFxEngine::latencySamples() const {
|
|
return impl_->prepared ? impl_->totalLatency : 0u;
|
|
}
|
|
|
|
std::vector<uint32_t> JuceFxEngine::entryLatencies() const {
|
|
return impl_->slotLatencies;
|
|
}
|