enricobuehler
4c3b11445c
Phase 0 of design/pyrowave-codec-plan.md — the opt-in wired-LAN ultra-low- latency codec. Vendored at upstream 509e4f88 (API 0.4.0, Granite 44362775, volk + vulkan-headers pins in PUNKTFUNK-VENDOR.txt), pruned to the 6.6 MB the standalone no-renderer build needs; scripts/vendor-pyrowave.sh reproduces the tree (a pin bump is protocol-affecting, plan §4.2). build.rs drives the wrapper CMakeLists (static archives incl. a static C-API lib upstream only ships shared) + bindgen over pyrowave.h; Linux and Windows only, empty stub elsewhere (Apple gets a native Metal port, §4.7). Offline-safe by construction: no network, no system lib, vendored Vulkan headers — same model as the opus dep (flatpak builder has no network). Phase-0 validation on .21 (RTX 5070 Ti, driver 610.43.03): - upstream pyrowave-c-test + interop test (incl. dmabuf/DRM-modifier Vulkan<->Vulkan) pass, from the pristine AND the pruned tree - GPU kernel times at ~1.6 bpp noise: encode/decode 0.090/0.042 ms @800p, 0.146/0.067 @1080p, 0.226/0.103 @1440p, 0.477/0.201 @4K — order of magnitude under NVENC's 1-2 ms retrieve, CBR lands within ~100 B of target - cargo test -p pyrowave-sys green (static link + API-version pin check) Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
112 lines
2.9 KiB
C++
112 lines
2.9 KiB
C++
/* Copyright (c) 2017-2026 Hans-Kristian Arntzen
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#pragma once
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#include "path_utils.hpp"
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#include "filesystem.hpp"
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#include "intrusive.hpp"
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#include "logging.hpp"
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#include <string>
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namespace Granite
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{
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template <typename T>
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class VolatileSource : public Util::IntrusivePtrEnabled<VolatileSource<T>>
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{
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public:
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VolatileSource(Filesystem *fs_, const std::string &path_)
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: fs(fs_), path(Path::enforce_protocol(path_))
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{
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}
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VolatileSource() = default;
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~VolatileSource()
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{
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deinit();
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}
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protected:
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Filesystem *fs = nullptr;
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std::string path;
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void deinit()
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{
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if (notify_backend && notify_handle >= 0)
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notify_backend->uninstall_notification(notify_handle);
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notify_backend = nullptr;
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notify_handle = -1;
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}
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bool init()
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{
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if (path.empty() || !fs)
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return false;
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auto file = fs->open_readonly_mapping(path);
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if (!file)
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{
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LOGE("Failed to open volatile file: %s\n", path.c_str());
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return false;
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}
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auto *self = static_cast<T *>(this);
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self->update(std::move(file));
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auto paths = Path::protocol_split(path);
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auto *proto = fs->get_backend(paths.first);
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if (proto)
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{
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// Listen to directory so we can track file moves properly.
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notify_handle = proto->install_notification(Path::basedir(paths.second), [&](const FileNotifyInfo &info) {
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if (info.type == FileNotifyType::FileDeleted)
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return;
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if (info.path != path)
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return;
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try
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{
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auto f = fs->open_readonly_mapping(info.path);
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if (!f)
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return;
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auto *s = static_cast<T *>(this);
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s->update(std::move(f));
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}
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catch (const std::exception &e)
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{
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LOGE("Caught update exception: %s\n", e.what());
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}
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});
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}
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return true;
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}
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private:
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FileNotifyHandle notify_handle = -1;
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FilesystemBackend *notify_backend = nullptr;
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};
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template <typename T>
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using VolatileHandle = Util::IntrusivePtr<VolatileSource<T>>;
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}
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