diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..f288702 --- /dev/null +++ b/LICENSE @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. By contrast, +the GNU General Public License is intended to guarantee your freedom to +share and change all versions of a program--to make sure it remains free +software for all its users. We, the Free Software Foundation, use the +GNU General Public License for most of our software; it applies also to +any other work released this way by its authors. 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If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/README.md b/README.md new file mode 100644 index 0000000..0014e1c --- /dev/null +++ b/README.md @@ -0,0 +1,451 @@ +# MXL Player + +MXL Player is a desktop and command-line controlled player for local +[Media eXchange Layer](https://github.com/dmf-mxl/mxl) audio and video flows. +It can play either feed independently, play both simultaneously, or switch a +configured pair into and out of native MXL synchronization while running. + +The application uses SDL3 for its window, input, and audio output; Vulkan for +video and ImGui rendering; and +[`go-mxl`](https://github.com/qvest-digital/go-mxl) for MXL access. + +> [!IMPORTANT] +> This project is under active development. Linux is the currently tested +> platform. macOS support through Vulkan/MoltenVK is being tested. Packaging, +> stable releases, and MXL Fabrics support are planned. + +## Features + +- Video-only and audio-only playback. +- Independent audio and video feeds, including feeds from different domains. +- Native synchronized audio/video playback when both feeds are compatible. +- Runtime feed apply, stop, resume, remove, and replacement. +- Runtime synchronization enable/disable. +- Finite or unlimited reconnect attempts with exponential backoff. +- JSON playlists with manual selection, timed advance, looping, and failure + policies. +- Playback, media, timing, retry, and dropped-frame statistics. +- Fullscreen mode and an empty idle window when no video is active. +- Embedded UI font; no system font installation is required. + +## Current requirements + +- Go 1.26 or newer. +- A C/C++ build toolchain for cgo dependencies. +- A compatible shared build of `libmxl` and its development headers. +- pkg-config metadata for `libmxl`. +- SDL3 shared library. +- Vulkan loader and a working Vulkan driver. + +The project currently pins: + +```text +github.com/qvest-digital/go-mxl v1.1.0-rc.2 +``` + +The headers used while building and the `libmxl.so` loaded at runtime must be +compatible. In particular, synchronized playback requires the native symbol: + +```text +mxlCreateFlowSynchronizationGroup +``` + +Check it with: + +```sh +nm -D /path/to/libmxl.so | grep mxlCreateFlowSynchronizationGroup +``` + +## Building on Linux + +First verify that pkg-config resolves the intended MXL installation: + +```sh +pkg-config --modversion libmxl +pkg-config --cflags --libs libmxl +pkg-config --variable=pcfiledir libmxl +pkg-config --variable=libdir libmxl +``` + +If MXL is installed in a nonstandard prefix: + +```sh +export MXL_PREFIX=/opt/mxl/1.2.0 +export PKG_CONFIG_PATH="$MXL_PREFIX/lib/pkgconfig" +export LD_LIBRARY_PATH="$MXL_PREFIX/lib${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}" +``` + +Then build and test: + +```sh +go mod download +go test ./... +mkdir -p build +go build -o build/mxl-player ./cmd/mxl-player +``` + +Confirm which native library the executable will use: + +```sh +ldd build/mxl-player | grep libmxl +``` + +Do not copy a `libmxl.pc` file containing paths from another computer. A +relocatable SDK file can use `${pcfiledir}` to describe its own location. + +## macOS status + +The SDL3 and Vulkan loaders contain macOS library-name support. The Vulkan +dependency is temporarily replaced by a portability fork while the upstream +change is reviewed. + +A macOS source build currently requires: + +- Xcode Command Line Tools; +- Go; +- SDL3; +- Vulkan loader and MoltenVK; +- a macOS build of libmxl with matching headers and pkg-config metadata. + +Nonstandard loader locations can be supplied explicitly: + +```sh +export SDL3_LIBRARY=/absolute/path/to/libSDL3.dylib +export VULKAN_LIBRARY=/absolute/path/to/libvulkan.dylib +``` + +These variables should not be necessary once the libraries are installed in a +normal dynamic-loader path. A self-contained `.app` bundle is planned but does +not exist yet. + +## Running + +Start with no configured feed and enter domains/UUIDs in the GUI: + +```sh +./build/mxl-player +``` + +Video only: + +```sh +./build/mxl-player \ + --domain /dev/shm/mxl \ + --video VIDEO_UUID +``` + +Audio only: + +```sh +./build/mxl-player \ + --domain /dev/shm/mxl \ + --audio AUDIO_UUID +``` + +Independent video and audio: + +```sh +./build/mxl-player \ + --video-domain /dev/shm/video \ + --video VIDEO_UUID \ + --audio-domain /dev/shm/audio \ + --audio AUDIO_UUID +``` + +Start a compatible pair synchronized: + +```sh +./build/mxl-player \ + --domain /dev/shm/mxl \ + --video VIDEO_UUID \ + --audio AUDIO_UUID \ + --sync +``` + +Synchronization is not a permanent startup mode. It can be enabled and +disabled at runtime from the settings window. + +## Command-line options + +| Option | Short | Meaning | +|---|---:|---| +| `--help` | `-h` | Show help and exit. | +| `--domain PATH` | `-d` | Default domain for feeds without a specific domain. | +| `--video-domain PATH` | | Domain for the video feed. | +| `--audio-domain PATH` | | Domain for the audio feed. | +| `--video UUID` | `-v` | Initial video flow UUID. | +| `--audio UUID` | `-a` | Initial audio flow UUID. | +| `--sync` | `-s` | Start a configured A/V pair synchronized. | +| `--max-attempts N` | | Attempts per playback lifecycle; `0` means unlimited. | +| `--playlist FILE` | | Load a JSON playlist. | +| `--fullscreen` | `-f` | Start fullscreen. | +| `--gpu-id N` | `-g` | Select GPU ID; currently incomplete. | +| `--playback-id N` | `-p` | Select the SDL playback-device ID. | +| `--list-playback` | | List SDL playback devices and exit. | +| `--list-gpu` | | List Vulkan physical devices and exit. | +| `--verbose` | | Reserved; currently incomplete. | + +Run `./build/mxl-player --help` for the authoritative list. + +## GUI controls + +The settings window accepts separate video/audio domains and UUIDs. + +- **Apply feeds** applies the complete desired configuration. +- **Stop** stops a feed while retaining its UUID and domain. +- **Resume** starts a stopped configured feed with a fresh lifecycle. +- **Remove** stops a feed and clears its configuration. +- **Stop all** and **Resume all** operate on both configured feeds. +- **Synchronize** switches a compatible active pair between synchronized and + independent playback. + +Keyboard shortcuts: + +| Key | Action | +|---|---| +| `F1` | Show or hide settings. | +| `F2` | Show or hide statistics. | +| `F` | Toggle fullscreen. | +| `Q` or `Esc` | Quit. | + +## Retry behavior + +Each playback lifecycle starts at attempt 1. Failed connections/readers are +retried with exponential delay from 500 ms up to 5 seconds. + +```sh +# Retry indefinitely +./build/mxl-player -d /dev/shm/mxl -v VIDEO_UUID --max-attempts 0 + +# Stop after three failed attempts +./build/mxl-player -d /dev/shm/mxl -v VIDEO_UUID --max-attempts 3 +``` + +With independent A/V, one failed feed retries without stopping the other. A +synchronized pair reconnects as one lifecycle. + +## Playlists + +Start a playlist with: + +```sh +./build/mxl-player --playlist playlist.json +``` + +Example: + +```json +{ + "loop": true, + "on_failure": "next", + "retry": { + "max_attempts": 3, + "initial_delay": "500ms", + "max_delay": "5s" + }, + "entries": [ + { + "name": "Synchronized pair", + "video": { + "domain": "/dev/shm/mxl", + "uuid": "VIDEO_UUID" + }, + "audio": { + "domain": "/dev/shm/mxl", + "uuid": "AUDIO_UUID" + }, + "sync": true, + "duration": "10s" + }, + { + "name": "Video only", + "video": { + "domain": "/dev/shm/mxl", + "uuid": "ANOTHER_VIDEO_UUID" + }, + "duration": "15s" + }, + { + "name": "Audio until manually advanced", + "audio": { + "domain": "/dev/shm/mxl", + "uuid": "ANOTHER_AUDIO_UUID" + } + } + ] +} +``` + +Playlist rules: + +- `duration` uses Go duration syntax such as `500ms`, `10s`, or `2m`. +- Missing/empty duration means manual advance. +- `loop: true` returns to the first entry after the last. +- `on_failure: "wait"` remains on an exhausted entry. +- `on_failure: "next"` advances after retry exhaustion. +- A synchronized entry must contain both video and audio. +- Playlist retry settings override the CLI defaults unless + `--max-attempts` was explicitly supplied. + +The GUI supports entry selection, previous/next navigation, and pausing or +resuming a timed entry. + +## Development checks + +```sh +go fmt ./... +go test ./... +go test -race ./internal/playback ./cmd/mxl-player +go vet ./... +``` + +Live media and GPU/audio integration still require real MXL producers and are +not covered by the unit test suite. + +## Architecture + +Playback workers own individual reader lifecycles and retries. Slots ensure +that only one worker lifecycle for a feed or synchronized pair runs at a time. +The session controller converts the complete desired feed state into an +independent or synchronized execution plan. Playlist logic sends the same +session commands as the GUI, so it does not bypass lifecycle rules. + +```mermaid +flowchart TD + CLI[CLI startup configuration] + GUI[ImGui controls] + PC[PlaylistController] + PEC[PlaylistEventCoordinator] + + CMD[SessionCommand channel] + SC[SessionController] + PLAN[SessionPlan] + + VS[VideoSlot] + AS[AudioSlot] + SS[SyncSlot] + + VW[VideoWorker] + AW[AudioWorker] + SW[SyncWorker] + + VF[VideoFactory] + AF[AudioFactory] + SF[SyncFactory] + MXL[go-mxl / libmxl] + + VB[VideoBridge] + VR[Vulkan renderer] + AO[SDL audio sink] + + STATUS[StatusStore] + MEDIA[MediaStatsStore] + + CLI --> CMD + GUI --> CMD + PC --> CMD + CMD --> SC + SC --> PLAN + + PLAN -->|independent video| VS + PLAN -->|independent audio| AS + PLAN -->|synchronized pair| SS + + VS --> VW --> VF --> MXL + AS --> AW --> AF --> MXL + SS --> SW --> SF --> MXL + + VW --> VB --> VR + SW --> VB + AW --> AO + SW --> AO + + VW --> STATUS + AW --> STATUS + SW --> STATUS + VW --> MEDIA + AW --> MEDIA + SW --> MEDIA + + STATUS --> GUI + MEDIA --> GUI + STATUS --> PEC + SC --> PEC + PC --> PEC + PEC --> PC +``` + +### Main entities + +| Entity | Responsibility | +|---|---| +| `SessionConfig` | Complete desired state of both feeds, synchronization request, and retry policy. | +| `SessionCommand` | One user or playlist request that produces a new desired session state. | +| `SessionController` | Owns the current desired state and reconciles it with the required topology. | +| `SessionPlan` | Validated execution plan: idle, independent feeds, or one synchronized pair. | +| `VideoSlot` / `AudioSlot` | Own replacement and cancellation of one independent worker lifecycle. | +| `SyncSlot` | Owns replacement and cancellation of the synchronized pair lifecycle. | +| Workers | Open readers, consume media, apply retry policy, and publish lifecycle status. | +| MXL adapter factories | Translate `go-mxl` readers, metadata, and errors into playback contracts. | +| `VideoBridge` | Transfers the latest borrowed video frame safely to the render loop. | +| `SDLAudioSink` | Interleaves planar F32 samples and manages SDL audio queueing. | +| `StatusStore` | Holds the latest lifecycle status for each playback unit. | +| `MediaStatsStore` | Holds feed metadata and received-media counters for diagnostics. | +| `PlaylistController` | Owns selection, timing, looping, navigation, and failure policy. | +| `PlaylistEventCoordinator` | Observes session/status state and tells the playlist when an entry is ready or exhausted. | + +### Ownership rules + +- Every incoming feed configuration represents the complete desired state for + that slot. +- A slot cancels and joins its current worker before starting a replacement; + two worker lifecycles for one slot must never overlap. +- Invalid commands do not disturb the current valid session. +- Independent audio and video fail and retry independently. +- A synchronized pair fails and retries as one lifecycle. +- Runtime synchronization changes topology; it is not a startup-only mode. +- Cancellation flows from the application context through controllers, slots, + workers, readers, and sinks. +- Playback owns lifecycle policy. Adapters know MXL details, while renderer, + audio output, GUI, and playlists do not. + +### Source layout + +| Path | Contents | +|---|---| +| `cmd/mxl-player` | Composition root, CLI, main loop, GUI, and playlist file decoding. | +| `internal/playback` | Transport-independent state, workers, slots, controllers, retry, playlist, and statistics. | +| `internal/adapter/mxl` | Local MXL implementations of playback reader contracts. | +| `internal/source` | Low-level local MXL video/audio access and error translation. | +| `internal/output` | SDL audio sink and sample interleaving. | +| `internal/renderer` | Vulkan video rendering. | +| `internal/imgui` | ImGui SDL input and Vulkan rendering integration. | +| `internal/sdl` | Minimal dynamically loaded SDL3 bindings used by the player. | +| `internal/assets` | Embedded UI assets and their licenses. | + +MXL Fabrics is planned as an ingress transport that writes remote data into a +local MXL flow; it will not be implemented as a separate playback backend. See +[`MXLFABRICS_PLAN.md`](MXLFABRICS_PLAN.md). + +## Known limitations + +- Linux is the only platform currently exercised regularly. +- macOS/MoltenVK support is not yet release-tested. +- Windows support is not currently claimed. +- GPU selection and verbose logging flags are incomplete. +- There are no prebuilt packages or application bundles yet. +- MXL Fabrics ingress is planned but not implemented. +- Native MXL headers and runtime libraries must be ABI-compatible. + +## Third-party assets + +The embedded JetBrainsMonoNL Nerd Font Mono is distributed under the SIL Open +Font License 1.1. Its copyright notice, license, and source information are in +[`internal/assets/fonts`](internal/assets/fonts/). + +## License + +MXL Player is licensed under the GNU General Public License, version 3 or any +later version. See [`LICENSE`](LICENSE). + +The embedded font retains its separate SIL Open Font License 1.1. diff --git a/cmd/mxl-player/main.go b/cmd/mxl-player/main.go index faa5a14..a2f83c0 100644 --- a/cmd/mxl-player/main.go +++ b/cmd/mxl-player/main.go @@ -23,7 +23,7 @@ import ( const ( APP_NAME = "MXL Player" - APP_VER = "1.0.0" + APP_VER = "0.3.0" WIN_WIDTH int32 = 1280 WIN_HEIGHT int32 = 720 ) diff --git a/go.mod b/go.mod index 846d663..d8aa29b 100644 --- a/go.mod +++ b/go.mod @@ -7,7 +7,7 @@ require ( github.com/ebitengine/purego v0.10.2 ) -require github.com/qvest-digital/go-mxl v1.1.0-rc.1 +require github.com/qvest-digital/go-mxl v1.1.0-rc.2 require github.com/spf13/pflag v1.0.10 diff --git a/go.sum b/go.sum index 5a4b0c2..d1e80c4 100644 --- a/go.sum +++ b/go.sum @@ -4,7 +4,7 @@ github.com/JohannesItten/vulkan-go v0.0.0-20260903100450-2f1650464726 h1:4gRCj5R github.com/JohannesItten/vulkan-go v0.0.0-20260903100450-2f1650464726/go.mod h1:DIo6W2yFav1DflNKc0W0Oc7mecbdBg2btsaHhIYmwUA= github.com/ebitengine/purego v0.10.2 h1:W809HbnvzAxgdm+aOvlSekrM16wGCdT/e76+9tS7gzE= github.com/ebitengine/purego v0.10.2/go.mod h1:iIjxzd6CiRiOG0UyXP+V1+jWqUXVjPKLAI0mRfJZTmQ= -github.com/qvest-digital/go-mxl v1.1.0-rc.1 h1:CUg29Q5c/JA6pqyA5gP3vu7JBr8lRXbOOxC+r0W572s= -github.com/qvest-digital/go-mxl v1.1.0-rc.1/go.mod h1:cYzyT+S/AONytsKr/DozzFQP2OrNrg/JsQOSjvwn+Rk= +github.com/qvest-digital/go-mxl v1.1.0-rc.2 h1:J1EiiOwy9cEZK1djv8uI3fFP2Oq228Y2Sft/y5sE6D4= +github.com/qvest-digital/go-mxl v1.1.0-rc.2/go.mod h1:cYzyT+S/AONytsKr/DozzFQP2OrNrg/JsQOSjvwn+Rk= github.com/spf13/pflag v1.0.10 h1:4EBh2KAYBwaONj6b2Ye1GiHfwjqyROoF4RwYO+vPwFk= github.com/spf13/pflag v1.0.10/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg= diff --git a/imgui.ini b/imgui.ini index 87f5813..d5537ee 100644 --- a/imgui.ini +++ b/imgui.ini @@ -9,7 +9,7 @@ Size=700,720 Collapsed=0 [Window][Stats] -Pos=820,0 +Pos=1460,0 Size=460,510 Collapsed=0 diff --git a/mxl-gst-scripts/loop-domain-2.sh b/mxl-gst-scripts/loop-domain-2.sh new file mode 100755 index 0000000..691029e --- /dev/null +++ b/mxl-gst-scripts/loop-domain-2.sh @@ -0,0 +1,12 @@ +#!/bin/bash +VIDEO_ID="5fbec3b1-1b0f-417d-9059-8b94a47197ed" +AUDIO_ID="5fbec3b1-1b0f-417d-9059-8b94a47197ec" +VIDEO_URI=$1 +if [[ -z "${VIDEO_URI}" ]] then + VIDEO_URI="${HOME}/Videos/test-vid/timelapse_spb.ts" +fi +export GST_PLUGIN_PATH="${HOME}/.gst-plugin:${GST_PLUGIN_PATH}" +mxl-gst-looping-filesrc -d /dev/shm/mxl-2 -i "${VIDEO_URI}" --video-id "${VIDEO_ID}" --audio-id "${AUDIO_ID}" 2>/dev/null +# sleep 5 +# kill -9 $(pidof "mxl-gst-looping-filesrc") +# echo -e "\ngst-looping-filesrc killed"