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4gray
8fdac824fd
* docs: design Linux frame-copy packaging * docs: plan Linux frame-copy packaging * feat(packaging): define Linux frame-copy profiles * fix(packaging): reject inherited profile names * feat(embedded-mpv): validate staged Linux runtime * fix(embedded-mpv): require Linux source packages * fix(embedded-mpv): harden Linux runtime staging * feat(embedded-mpv): build LGPL Linux runtime * fix(embedded-mpv): pin Linux runtime inputs * feat(embedded-mpv): build relocatable Linux helper * fix(embedded-mpv): require bundled Linux runtime * fix(embedded-mpv): make Linux runtime portable * feat(packaging): ship Linux frame-copy artifacts * fix(embedded-mpv): verify Linux helper linkage * fix(packaging): enforce Linux frame-copy isolation * fix(embedded-mpv): pin Linux display data * docs(embedded-mpv): document Linux frame-copy packaging * feat(embedded-mpv): probe Linux frame-copy runtime * test(embedded-mpv): smoke packaged Linux frame-copy * docs(embedded-mpv): clarify Linux system runtime baseline * fix(embedded-mpv): harden Linux runtime capability gate * ci: verify Linux frame-copy packages * test(embedded-mpv): harden packaged Linux smoke * test(embedded-mpv): preserve packaged GL mode * test(packaging): harden Linux package probes * fix(embedded-mpv): enable private Snap shared memory * fix(embedded-mpv): sanitize Linux helper environment * fix(packaging): enforce private Snap memory semantics * fix(packaging): reject ambiguous Snap memory metadata * fix(embedded-mpv): prioritize trusted Snap GL * fix(packaging): reject advanced Snap YAML semantics * fix(packaging): reject arbitrary Snap YAML aliases * feat(packaging): ship Linux runtime license notices * docs(embedded-mpv): document Linux runtime distribution * fix(packaging): parse Snap trailing comments safely * fix(release): gate Snap publish on public source release * fix(packaging): strip VCS metadata from source bundle * docs(packaging): clarify Linux source release gate * test(embedded-mpv): smoke missing bundled libmpv * style(embedded-mpv): format final validation inputs * fix(e2e): satisfy fixture index signature typing * fix(ci): declare fontconfig gperf generator * fix(embedded-mpv): hash runtime cache identities * fix(packaging): harden Linux frame-copy delivery * fix(packaging): tighten runtime delivery gates * fix(ci): decouple Linux runtime matrix * fix(packaging): harden Linux frame-copy delivery * fix(packaging): validate Linux frame-copy runtimes * fix(packaging): scope Snap Electron library checks * feat(packaging): ship Linux frame-copy runtimes * fix(packaging): improve Linux runtime smoke diagnostics * fix(packaging): expose bounded helper probe details * test(packaging): trace Snap EGL probe failures * fix(packaging): prefer core22 ABI in Snap helper * fix(packaging): bound helper probe capture * fix(packaging): harden Linux frame-copy releases * fix(packaging): canonicalize libplacebo submodule identity * fix(packaging): make source archive inspection portable * fix(packaging): harden Snap release verification
887 lines
33 KiB
C++
887 lines
33 KiB
C++
/*
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* iptvnator-mpv-helper — frame-copy embedded MPV helper process
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* (macOS + Linux + Windows; platform GL context in frame_helper_gl.h).
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*
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* One process = one playback session. Owns libmpv end to end: decodes,
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* renders offscreen at viewport size, publishes BGRA frames into a shared
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* memory ring (frame_shm.h), and plays audio directly through the OS.
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*
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* Control protocol: tab-separated commands on stdin, JSON events on stdout
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* (see frame_helper_io.h). The `snapshot` event mirrors the TypeScript
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* NativeEmbeddedMpvSessionSnapshot shape so the Electron-side adapter can
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* cache it verbatim. Status semantics are ported from embedded_mpv.mm:
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* END_FILE reason mapping, eof-reached => ended (keep-open), pause flag
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* gated on a loaded path, only fatal/load errors flip the status.
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*
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* Usage:
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* iptvnator_mpv_helper --shm-base /impv-<id> --width 1280 --height 720
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* [--volume 0..1] [--hwdec auto]
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*/
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#include <mpv/client.h>
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#include <algorithm>
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#include <atomic>
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#include <clocale>
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#include <cmath>
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#include <csignal>
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#include <cstdio>
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#include <cstring>
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#include <ctime>
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#include <iostream>
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#include <mutex>
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#include <string>
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#include <thread>
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#include <utility>
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#include <vector>
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#include "frame_helper_io.h"
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#include "frame_helper_render.h"
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namespace {
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using frame_helper::Command;
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using frame_helper::emitLine;
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using frame_helper::GlContext;
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using frame_helper::JsonWriter;
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using frame_helper::RenderPipeline;
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struct TrackInfo {
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int64_t id = -1;
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std::string title;
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std::string language;
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bool defaultTrack = false;
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bool forced = false;
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};
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struct SnapshotState {
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std::string status = "idle";
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double positionSeconds = 0;
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double durationSeconds = -1; /* <0 => null */
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double volume = 1; /* 0..1 */
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int64_t videoWidth = 0; /* mpv dwidth/dheight; 0 = unknown */
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int64_t videoHeight = 0;
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std::string streamUrl;
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std::vector<TrackInfo> audioTracks;
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int64_t selectedAudioTrackId = -1;
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std::vector<TrackInfo> subtitleTracks;
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int64_t selectedSubtitleTrackId = -1;
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double playbackSpeed = 1;
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std::string aspectOverride = "no";
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bool recordingActive = false;
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std::string recordingTargetPath;
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std::string recordingStartedAt;
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std::string recordingError;
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std::string error;
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};
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struct HelperState {
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mpv_handle* mpv = nullptr;
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RenderPipeline pipeline;
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std::mutex mutex;
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SnapshotState snapshot;
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bool paused = false;
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bool loadedPath = false;
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bool dirty = true;
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std::string lastEmittedStatus;
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uint64_t lastEmitNs = 0;
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/* Requested viewport in device pixels; the render target is the
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* aspect-fit of the video inside it so letterbox bars are never
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* rendered (and frames stay as small as possible). */
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int viewportWidth = 0;
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int viewportHeight = 0;
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std::atomic<bool> running{true};
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};
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HelperState g_state;
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constexpr uint64_t SNAPSHOT_EMIT_INTERVAL_NS = 250ull * 1000 * 1000;
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std::string isoTimestampNow() {
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char buffer[32];
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const time_t now = time(nullptr);
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struct tm utc;
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#if defined(_WIN32)
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gmtime_s(&utc, &now);
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#else
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gmtime_r(&now, &utc);
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#endif
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strftime(buffer, sizeof(buffer), "%Y-%m-%dT%H:%M:%SZ", &utc);
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return buffer;
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}
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std::string tracksJson(const std::vector<TrackInfo>& tracks,
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int64_t selectedId) {
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std::string out = "[";
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bool first = true;
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for (const TrackInfo& track : tracks) {
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JsonWriter writer;
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writer.num("id", (double)track.id);
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if (!track.title.empty()) writer.str("title", track.title);
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if (!track.language.empty()) writer.str("language", track.language);
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writer.boolean("selected", track.id == selectedId);
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writer.boolean("defaultTrack", track.defaultTrack);
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writer.boolean("forced", track.forced);
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if (!first) out += ',';
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first = false;
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out += writer.finish();
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}
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out += ']';
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return out;
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}
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/* Compose the snapshot event. Caller holds g_state.mutex. */
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std::string composeSnapshotLocked() {
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const SnapshotState& s = g_state.snapshot;
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JsonWriter writer;
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writer.str("event", "snapshot");
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writer.str("status", s.status);
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writer.num("positionSeconds", std::max(0.0, s.positionSeconds));
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if (s.videoWidth > 0 && s.videoHeight > 0) {
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writer.num("videoWidth", (double)s.videoWidth);
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writer.num("videoHeight", (double)s.videoHeight);
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}
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if (s.durationSeconds >= 0) {
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writer.num("durationSeconds", s.durationSeconds);
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} else {
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writer.nullValue("durationSeconds");
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}
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writer.num("volume", std::clamp(s.volume, 0.0, 1.5));
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writer.str("streamUrl", s.streamUrl);
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writer.raw("audioTracks", tracksJson(s.audioTracks, s.selectedAudioTrackId));
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if (s.selectedAudioTrackId >= 0) {
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writer.num("selectedAudioTrackId", (double)s.selectedAudioTrackId);
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} else {
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writer.nullValue("selectedAudioTrackId");
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}
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writer.raw("subtitleTracks",
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tracksJson(s.subtitleTracks, s.selectedSubtitleTrackId));
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if (s.selectedSubtitleTrackId >= 0) {
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writer.num("selectedSubtitleTrackId",
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(double)s.selectedSubtitleTrackId);
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} else {
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writer.nullValue("selectedSubtitleTrackId");
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}
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writer.num("playbackSpeed", s.playbackSpeed);
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writer.str("aspectOverride", s.aspectOverride);
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JsonWriter recording;
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recording.boolean("active", s.recordingActive);
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if (!s.recordingTargetPath.empty())
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recording.str("targetPath", s.recordingTargetPath);
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if (!s.recordingStartedAt.empty())
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recording.str("startedAt", s.recordingStartedAt);
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if (!s.recordingError.empty()) recording.str("error", s.recordingError);
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writer.raw("recording", recording.finish());
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if (!s.error.empty()) writer.str("error", s.error);
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return writer.finish();
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}
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/* Emit the snapshot when dirty: immediately on status changes, otherwise at
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* most every SNAPSHOT_EMIT_INTERVAL_NS. Called from the mpv event thread. */
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void maybeEmitSnapshot(bool force = false) {
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std::string line;
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{
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std::lock_guard<std::mutex> lock(g_state.mutex);
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if (!g_state.dirty && !force) return;
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const uint64_t now = frame_helper::nowNs();
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const bool statusChanged =
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g_state.snapshot.status != g_state.lastEmittedStatus;
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if (!force && !statusChanged &&
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now - g_state.lastEmitNs < SNAPSHOT_EMIT_INTERVAL_NS) {
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return;
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}
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g_state.dirty = false;
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g_state.lastEmitNs = now;
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g_state.lastEmittedStatus = g_state.snapshot.status;
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line = composeSnapshotLocked();
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}
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emitLine(line);
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}
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void markDirtyLocked() { g_state.dirty = true; }
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/* Aspect-fit of the current video inside the requested viewport. Caller
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* holds g_state.mutex. Letterbox bars are handled by the renderer layout,
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* not baked into frames. */
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std::pair<int, int> computeRenderSizeLocked() {
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const int vpW = g_state.viewportWidth;
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const int vpH = g_state.viewportHeight;
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const int64_t vw = g_state.snapshot.videoWidth;
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const int64_t vh = g_state.snapshot.videoHeight;
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if (vw < 16 || vh < 16 || vpW < 16 || vpH < 16) {
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return {vpW, vpH};
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}
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const double scale =
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std::min(vpW / (double)vw, vpH / (double)vh);
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const int width =
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std::max(16, (int)llround((double)vw * scale)) & ~1;
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const int height =
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std::max(16, (int)llround((double)vh * scale)) & ~1;
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return {width, height};
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}
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void applyRenderSizeLocked() {
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const auto [width, height] = computeRenderSizeLocked();
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if (width >= 16 && height >= 16) {
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g_state.pipeline.requestResize(width, height);
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}
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}
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/* ---- track-list parsing (ported from embedded_mpv.mm) ------------------- */
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void parseTrackNode(const mpv_node& trackNode, const char* wantedType,
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std::vector<TrackInfo>& out) {
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if (trackNode.format != MPV_FORMAT_NODE_MAP || !trackNode.u.list) return;
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TrackInfo track;
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bool matchesType = false;
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const mpv_node_list& map = *trackNode.u.list;
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for (int i = 0; i < map.num; i++) {
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const char* key = map.keys[i];
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const mpv_node& value = map.values[i];
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if (!key) continue;
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if (std::strcmp(key, "type") == 0 &&
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value.format == MPV_FORMAT_STRING && value.u.string) {
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matchesType = std::strcmp(value.u.string, wantedType) == 0;
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} else if (std::strcmp(key, "id") == 0 &&
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value.format == MPV_FORMAT_INT64) {
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track.id = value.u.int64;
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} else if (std::strcmp(key, "title") == 0 &&
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value.format == MPV_FORMAT_STRING && value.u.string) {
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track.title = value.u.string;
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} else if (std::strcmp(key, "lang") == 0 &&
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value.format == MPV_FORMAT_STRING && value.u.string) {
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track.language = value.u.string;
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} else if (std::strcmp(key, "default") == 0 &&
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value.format == MPV_FORMAT_FLAG) {
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track.defaultTrack = value.u.flag != 0;
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} else if (std::strcmp(key, "forced") == 0 &&
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value.format == MPV_FORMAT_FLAG) {
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track.forced = value.u.flag != 0;
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}
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}
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if (matchesType && track.id >= 0) {
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out.push_back(std::move(track));
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}
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}
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void updateTracksFromNode(const mpv_node& trackListNode) {
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if (trackListNode.format != MPV_FORMAT_NODE_ARRAY ||
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!trackListNode.u.list) {
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return;
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}
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std::vector<TrackInfo> audio;
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std::vector<TrackInfo> subs;
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for (int i = 0; i < trackListNode.u.list->num; i++) {
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parseTrackNode(trackListNode.u.list->values[i], "audio", audio);
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parseTrackNode(trackListNode.u.list->values[i], "sub", subs);
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}
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g_state.snapshot.audioTracks = std::move(audio);
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g_state.snapshot.subtitleTracks = std::move(subs);
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}
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bool parseTrackSelection(const char* value, int64_t& out) {
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if (!value) return false;
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char* end = nullptr;
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const long long parsed = strtoll(value, &end, 10);
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if (end == value || (end && *end != '\0')) return false;
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out = parsed;
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return true;
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}
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/* ---- mpv event loop (status semantics ported from embedded_mpv.mm) ------ */
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void handlePropertyChange(const mpv_event_property& property) {
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const std::string name = property.name ? property.name : "";
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SnapshotState& s = g_state.snapshot;
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if (name == "time-pos" && property.format == MPV_FORMAT_DOUBLE &&
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property.data) {
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s.positionSeconds = *static_cast<double*>(property.data);
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} else if (name == "duration" && property.format == MPV_FORMAT_DOUBLE &&
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property.data) {
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s.durationSeconds = *static_cast<double*>(property.data);
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} else if (name == "pause" && property.format == MPV_FORMAT_FLAG &&
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property.data) {
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g_state.paused = *static_cast<int*>(property.data) != 0;
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if (s.status != "loading" && s.status != "ended" &&
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s.status != "error" && g_state.loadedPath) {
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s.status = g_state.paused ? "paused" : "playing";
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}
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} else if (name == "eof-reached" && property.format == MPV_FORMAT_FLAG &&
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property.data) {
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if (*static_cast<int*>(property.data) != 0 && g_state.loadedPath) {
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s.status = "ended";
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}
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} else if (name == "volume" && property.format == MPV_FORMAT_DOUBLE &&
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property.data) {
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s.volume = *static_cast<double*>(property.data) / 100.0;
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} else if (name == "path" && property.format == MPV_FORMAT_STRING &&
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property.data) {
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const char* value = *static_cast<char**>(property.data);
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s.streamUrl = value ? value : "";
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} else if (name == "track-list" && property.format == MPV_FORMAT_NODE &&
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property.data) {
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updateTracksFromNode(*static_cast<mpv_node*>(property.data));
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} else if (name == "aid" && property.format == MPV_FORMAT_STRING &&
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property.data) {
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int64_t selected = -1;
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if (parseTrackSelection(*static_cast<char**>(property.data),
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selected)) {
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s.selectedAudioTrackId = selected;
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} else {
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s.selectedAudioTrackId = -1;
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}
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} else if (name == "sid" && property.format == MPV_FORMAT_STRING &&
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property.data) {
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int64_t selected = -1;
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if (parseTrackSelection(*static_cast<char**>(property.data),
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selected)) {
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s.selectedSubtitleTrackId = selected;
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} else {
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s.selectedSubtitleTrackId = -1;
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}
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} else if (name == "speed" && property.format == MPV_FORMAT_DOUBLE &&
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property.data) {
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s.playbackSpeed = *static_cast<double*>(property.data);
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} else if ((name == "dwidth" || name == "dheight") &&
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property.format == MPV_FORMAT_INT64 && property.data) {
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const int64_t value = *static_cast<int64_t*>(property.data);
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if (name == "dwidth") {
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s.videoWidth = value;
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} else {
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s.videoHeight = value;
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}
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applyRenderSizeLocked();
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} else if (name == "video-aspect-override" &&
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property.format == MPV_FORMAT_STRING && property.data) {
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const char* value = *static_cast<char**>(property.data);
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/* mpv reports the unset override as "-1.000000"; the renderer
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* contract uses "no" for that state. */
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s.aspectOverride =
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value && *value && std::atof(value) > 0 ? value : "no";
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} else {
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return;
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}
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markDirtyLocked();
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}
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void runMpvEventLoop() {
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while (g_state.running.load()) {
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mpv_event* event = mpv_wait_event(g_state.mpv, 0.1);
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if (!event) continue;
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if (event->event_id == MPV_EVENT_NONE) {
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maybeEmitSnapshot();
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continue;
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}
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{
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std::lock_guard<std::mutex> lock(g_state.mutex);
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SnapshotState& s = g_state.snapshot;
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switch (event->event_id) {
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case MPV_EVENT_START_FILE:
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s.status = "loading";
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s.error.clear();
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s.audioTracks.clear();
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s.selectedAudioTrackId = -1;
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s.subtitleTracks.clear();
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s.selectedSubtitleTrackId = -1;
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g_state.loadedPath = false;
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markDirtyLocked();
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break;
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case MPV_EVENT_FILE_LOADED:
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g_state.loadedPath = true;
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s.status = g_state.paused ? "paused" : "playing";
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markDirtyLocked();
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break;
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case MPV_EVENT_END_FILE: {
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const auto* endFile =
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static_cast<mpv_event_end_file*>(event->data);
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if (endFile &&
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endFile->reason == MPV_END_FILE_REASON_ERROR) {
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s.status = "error";
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s.error = endFile->error < 0
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? mpv_error_string(endFile->error)
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: "Playback failed.";
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} else if (endFile &&
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endFile->reason == MPV_END_FILE_REASON_EOF &&
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g_state.running.load()) {
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s.status = "ended";
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} else if (endFile &&
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endFile->reason ==
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MPV_END_FILE_REASON_REDIRECT &&
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g_state.running.load()) {
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s.status = "loading";
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s.error.clear();
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g_state.loadedPath = false;
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} else if (g_state.running.load()) {
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s.status = "idle";
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}
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markDirtyLocked();
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break;
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}
|
|
case MPV_EVENT_PROPERTY_CHANGE: {
|
|
const auto* property =
|
|
static_cast<mpv_event_property*>(event->data);
|
|
if (property) handlePropertyChange(*property);
|
|
break;
|
|
}
|
|
case MPV_EVENT_LOG_MESSAGE: {
|
|
const auto* logMessage =
|
|
static_cast<mpv_event_log_message*>(event->data);
|
|
if (!logMessage || !logMessage->level ||
|
|
!logMessage->text) {
|
|
break;
|
|
}
|
|
const std::string level = logMessage->level;
|
|
if (level == "error" || level == "fatal") {
|
|
s.error = logMessage->text;
|
|
markDirtyLocked();
|
|
}
|
|
if (level == "fatal") {
|
|
s.status = "error";
|
|
}
|
|
emitLine(JsonWriter()
|
|
.str("event", "log")
|
|
.str("level", level)
|
|
.str("prefix", logMessage->prefix
|
|
? logMessage->prefix
|
|
: "mpv")
|
|
.str("text", logMessage->text)
|
|
.finish());
|
|
break;
|
|
}
|
|
case MPV_EVENT_SHUTDOWN:
|
|
g_state.running.store(false);
|
|
s.status = "closed";
|
|
markDirtyLocked();
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
maybeEmitSnapshot();
|
|
}
|
|
maybeEmitSnapshot(true);
|
|
}
|
|
|
|
/* ---- command handling ---------------------------------------------------- */
|
|
|
|
void setPropertyString(const char* name, const std::string& value) {
|
|
mpv_set_property_string(g_state.mpv, name, value.c_str());
|
|
}
|
|
|
|
void handleLoadCommand(const Command& command) {
|
|
const std::string url = command.get("url");
|
|
if (url.empty()) return;
|
|
|
|
/* Loading a replacement stream stops any active recording first,
|
|
* mirroring the .mm behavior. */
|
|
{
|
|
std::lock_guard<std::mutex> lock(g_state.mutex);
|
|
if (g_state.snapshot.recordingActive) {
|
|
setPropertyString("stream-record", "");
|
|
g_state.snapshot.recordingActive = false;
|
|
g_state.snapshot.recordingStartedAt.clear();
|
|
}
|
|
g_state.snapshot.streamUrl = url;
|
|
g_state.snapshot.error.clear();
|
|
g_state.snapshot.status = "loading";
|
|
g_state.dirty = true;
|
|
}
|
|
|
|
/* Generic pass-through: every `opt.<name>` argument becomes a loadfile
|
|
* option, so the adapter controls start/user-agent/referrer/headers
|
|
* without protocol changes. */
|
|
std::string optionString;
|
|
for (const auto& [key, value] : command.args) {
|
|
if (key.rfind("opt.", 0) != 0 || value.empty()) continue;
|
|
if (!optionString.empty()) optionString += ',';
|
|
std::string escaped = value;
|
|
/* loadfile options string uses %len%value quoting to stay safe */
|
|
optionString += key.substr(4) + "=%" +
|
|
std::to_string(escaped.size()) + "%" + escaped;
|
|
}
|
|
|
|
const char* args[] = {"loadfile", url.c_str(), "replace",
|
|
optionString.empty() ? nullptr : optionString.c_str(),
|
|
nullptr};
|
|
/* mpv >= 0.38 expects an index argument before options; use the
|
|
* options-map-free form: loadfile <url> replace [options] */
|
|
int result;
|
|
if (optionString.empty()) {
|
|
const char* plain[] = {"loadfile", url.c_str(), "replace", nullptr};
|
|
result = mpv_command(g_state.mpv, plain);
|
|
} else {
|
|
const char* withOpts[] = {"loadfile", url.c_str(), "replace", "-1",
|
|
optionString.c_str(), nullptr};
|
|
result = mpv_command(g_state.mpv, withOpts);
|
|
if (result == MPV_ERROR_INVALID_PARAMETER) {
|
|
/* Older mpv without the index argument. */
|
|
result = mpv_command(g_state.mpv, args);
|
|
}
|
|
}
|
|
if (result < 0) {
|
|
std::lock_guard<std::mutex> lock(g_state.mutex);
|
|
g_state.snapshot.status = "error";
|
|
g_state.snapshot.error = mpv_error_string(result);
|
|
g_state.dirty = true;
|
|
}
|
|
}
|
|
|
|
void handleRecordCommand(const Command& command) {
|
|
const std::string path = command.get("path");
|
|
const int result = mpv_set_property_string(g_state.mpv, "stream-record",
|
|
path.c_str());
|
|
std::lock_guard<std::mutex> lock(g_state.mutex);
|
|
if (result < 0) {
|
|
g_state.snapshot.recordingError = mpv_error_string(result);
|
|
} else if (path.empty()) {
|
|
g_state.snapshot.recordingActive = false;
|
|
g_state.snapshot.recordingStartedAt.clear();
|
|
g_state.snapshot.recordingError.clear();
|
|
} else {
|
|
g_state.snapshot.recordingActive = true;
|
|
g_state.snapshot.recordingTargetPath = path;
|
|
g_state.snapshot.recordingStartedAt = isoTimestampNow();
|
|
g_state.snapshot.recordingError.clear();
|
|
}
|
|
g_state.dirty = true;
|
|
}
|
|
|
|
void handleCommand(const Command& command) {
|
|
if (command.name == "load") {
|
|
handleLoadCommand(command);
|
|
} else if (command.name == "pause") {
|
|
const int flag = command.get("value") == "1" ? 1 : 0;
|
|
mpv_set_property(g_state.mpv, "pause", MPV_FORMAT_FLAG,
|
|
const_cast<int*>(&flag));
|
|
} else if (command.name == "seek") {
|
|
const double seconds = command.getDouble("seconds", 0);
|
|
const std::string value = std::to_string(seconds);
|
|
const char* args[] = {"seek", value.c_str(), "absolute", nullptr};
|
|
mpv_command(g_state.mpv, args);
|
|
} else if (command.name == "volume") {
|
|
double percent =
|
|
std::clamp(command.getDouble("value", 1) * 100.0, 0.0, 100.0);
|
|
mpv_set_property(g_state.mpv, "volume", MPV_FORMAT_DOUBLE, &percent);
|
|
} else if (command.name == "aid" || command.name == "sid") {
|
|
const std::string value = command.get("value");
|
|
setPropertyString(command.name.c_str(),
|
|
value == "-1" ? "no" : value);
|
|
} else if (command.name == "speed") {
|
|
double speed = std::clamp(command.getDouble("value", 1), 0.25, 4.0);
|
|
mpv_set_property(g_state.mpv, "speed", MPV_FORMAT_DOUBLE, &speed);
|
|
} else if (command.name == "aspect") {
|
|
setPropertyString("video-aspect-override", command.get("value", "no"));
|
|
} else if (command.name == "record") {
|
|
handleRecordCommand(command);
|
|
} else if (command.name == "size") {
|
|
const int width = (int)command.getDouble("width", 0);
|
|
const int height = (int)command.getDouble("height", 0);
|
|
if (width >= 16 && height >= 16) {
|
|
std::lock_guard<std::mutex> lock(g_state.mutex);
|
|
g_state.viewportWidth = width;
|
|
g_state.viewportHeight = height;
|
|
applyRenderSizeLocked();
|
|
}
|
|
} else if (command.name == "quit") {
|
|
g_state.running.store(false);
|
|
mpv_wakeup(g_state.mpv);
|
|
}
|
|
}
|
|
|
|
void runStdinLoop() {
|
|
std::string line;
|
|
while (g_state.running.load() && std::getline(std::cin, line)) {
|
|
if (line.empty()) continue;
|
|
handleCommand(frame_helper::parseCommandLine(line));
|
|
}
|
|
/* stdin EOF => the parent process died or closed us: shut down. */
|
|
g_state.running.store(false);
|
|
mpv_wakeup(g_state.mpv);
|
|
}
|
|
|
|
void onRenderUpdate(void* pipeline) {
|
|
static_cast<RenderPipeline*>(pipeline)->notifyUpdate();
|
|
}
|
|
|
|
struct HelperArgs {
|
|
std::string shmBase = "/impv";
|
|
std::string hwdec = "auto";
|
|
std::string audioDelay; /* seconds, mpv audio-delay passthrough */
|
|
int width = 1280;
|
|
int height = 720;
|
|
double volume = 1;
|
|
bool runtimeProbe = false;
|
|
};
|
|
|
|
HelperArgs parseArgs(int argc, char** argv) {
|
|
HelperArgs args;
|
|
for (int i = 1; i < argc; i++) {
|
|
const std::string arg = argv[i];
|
|
auto next = [&]() -> std::string {
|
|
return i + 1 < argc ? argv[++i] : "";
|
|
};
|
|
if (arg == "--shm-base") args.shmBase = next();
|
|
else if (arg == "--width") args.width = std::atoi(next().c_str());
|
|
else if (arg == "--height") args.height = std::atoi(next().c_str());
|
|
else if (arg == "--volume") args.volume = std::atof(next().c_str());
|
|
else if (arg == "--hwdec") args.hwdec = next();
|
|
else if (arg == "--audio-delay") args.audioDelay = next();
|
|
else if (arg == "--runtime-probe") args.runtimeProbe = true;
|
|
}
|
|
args.width = std::max(16, args.width);
|
|
args.height = std::max(16, args.height);
|
|
return args;
|
|
}
|
|
|
|
int runtimeProbeFailure(const std::string& reason,
|
|
const std::string& detail = "") {
|
|
JsonWriter writer;
|
|
writer.num("protocol", 1)
|
|
.boolean("usable", false)
|
|
.str("reason", reason);
|
|
if (!detail.empty()) writer.str("detail", detail);
|
|
emitLine(writer.finish());
|
|
return 1;
|
|
}
|
|
|
|
std::string libmpvClientApiVersion() {
|
|
const unsigned long version = mpv_client_api_version();
|
|
return std::to_string(version >> 16) + "." +
|
|
std::to_string(version & 0xffff);
|
|
}
|
|
|
|
std::string runtimeProbeShmName() {
|
|
#if defined(_WIN32)
|
|
const uint64_t processId = (uint64_t)GetCurrentProcessId();
|
|
#else
|
|
const uint64_t processId = (uint64_t)getpid();
|
|
#endif
|
|
return "/impv-fc-runtime-probe-" + std::to_string(processId);
|
|
}
|
|
|
|
/*
|
|
* Bounded startup capability probe: initialize an idle libmpv client and
|
|
* create the platform GL + mpv OpenGL render contexts, then create, validate,
|
|
* and destroy a minimal shared-memory ring. It deliberately does not create
|
|
* an FBO, open media, or enter either command loop.
|
|
*/
|
|
int runRuntimeProbe() {
|
|
mpv_handle* mpv = mpv_create();
|
|
if (!mpv) {
|
|
return runtimeProbeFailure("mpv-create-failed");
|
|
}
|
|
|
|
mpv_set_option_string(mpv, "vo", "libmpv");
|
|
mpv_set_option_string(mpv, "idle", "yes");
|
|
mpv_set_option_string(mpv, "input-default-bindings", "no");
|
|
mpv_set_option_string(mpv, "osc", "no");
|
|
const int initializeResult = mpv_initialize(mpv);
|
|
if (initializeResult < 0) {
|
|
const std::string error = mpv_error_string(initializeResult);
|
|
mpv_destroy(mpv);
|
|
return runtimeProbeFailure("mpv-initialize-failed", error);
|
|
}
|
|
|
|
GlContext gl;
|
|
std::string error;
|
|
if (!gl.create(error)) {
|
|
gl.destroy();
|
|
mpv_terminate_destroy(mpv);
|
|
return runtimeProbeFailure("gl-context-create-failed", error);
|
|
}
|
|
if (!gl.makeCurrent(error)) {
|
|
gl.destroy();
|
|
mpv_terminate_destroy(mpv);
|
|
return runtimeProbeFailure("gl-context-bind-failed", error);
|
|
}
|
|
|
|
mpv_opengl_init_params glInit = {
|
|
gl.procLoader(),
|
|
gl.procLoaderCtx(),
|
|
};
|
|
mpv_render_param renderParams[] = {
|
|
{MPV_RENDER_PARAM_API_TYPE,
|
|
const_cast<char*>(MPV_RENDER_API_TYPE_OPENGL)},
|
|
{MPV_RENDER_PARAM_OPENGL_INIT_PARAMS, &glInit},
|
|
{MPV_RENDER_PARAM_INVALID, nullptr},
|
|
};
|
|
mpv_render_context* renderContext = nullptr;
|
|
const int renderResult =
|
|
mpv_render_context_create(&renderContext, mpv, renderParams);
|
|
if (renderResult < 0 || !renderContext) {
|
|
const std::string renderError =
|
|
renderResult < 0 ? mpv_error_string(renderResult)
|
|
: "render context unavailable";
|
|
if (renderContext) mpv_render_context_free(renderContext);
|
|
gl.destroy();
|
|
mpv_terminate_destroy(mpv);
|
|
return runtimeProbeFailure("mpv-render-context-failed", renderError);
|
|
}
|
|
|
|
frame_helper::ShmRing runtimeProbeRing;
|
|
const std::string shmName = runtimeProbeShmName();
|
|
if (!runtimeProbeRing.create(shmName, 16, 16, 1)) {
|
|
runtimeProbeRing.destroy();
|
|
mpv_render_context_free(renderContext);
|
|
gl.destroy();
|
|
mpv_terminate_destroy(mpv);
|
|
return runtimeProbeFailure("shared-memory-create-failed");
|
|
}
|
|
const bool sharedMemoryInitialized =
|
|
runtimeProbeRing.base != nullptr &&
|
|
runtimeProbeRing.header != nullptr &&
|
|
runtimeProbeRing.header->magic == FRAME_SHM_MAGIC &&
|
|
runtimeProbeRing.header->version == FRAME_SHM_VERSION &&
|
|
runtimeProbeRing.header->width == 16 &&
|
|
runtimeProbeRing.header->height == 16 &&
|
|
runtimeProbeRing.header->generation == 1;
|
|
runtimeProbeRing.destroy();
|
|
if (!sharedMemoryInitialized) {
|
|
mpv_render_context_free(renderContext);
|
|
gl.destroy();
|
|
mpv_terminate_destroy(mpv);
|
|
return runtimeProbeFailure("shared-memory-initialize-failed");
|
|
}
|
|
|
|
const std::string libmpvVersion = libmpvClientApiVersion();
|
|
mpv_render_context_free(renderContext);
|
|
gl.destroy();
|
|
mpv_terminate_destroy(mpv);
|
|
emitLine(JsonWriter()
|
|
.num("protocol", 1)
|
|
.boolean("usable", true)
|
|
.str("libmpv", libmpvVersion)
|
|
.str("renderApi", gl.renderApiName())
|
|
.finish());
|
|
return 0;
|
|
}
|
|
|
|
} // namespace
|
|
|
|
int main(int argc, char** argv) {
|
|
std::setlocale(LC_NUMERIC, "C");
|
|
#if !defined(_WIN32)
|
|
signal(SIGPIPE, SIG_IGN);
|
|
#endif
|
|
const HelperArgs args = parseArgs(argc, argv);
|
|
if (args.runtimeProbe) {
|
|
return runRuntimeProbe();
|
|
}
|
|
|
|
g_state.mpv = mpv_create();
|
|
if (!g_state.mpv) {
|
|
emitLine(JsonWriter()
|
|
.str("event", "fatal")
|
|
.str("error", "mpv_create failed")
|
|
.finish());
|
|
return 1;
|
|
}
|
|
|
|
mpv_set_option_string(g_state.mpv, "vo", "libmpv");
|
|
mpv_set_option_string(g_state.mpv, "hwdec", args.hwdec.c_str());
|
|
mpv_set_option_string(g_state.mpv, "keep-open", "yes");
|
|
mpv_set_option_string(g_state.mpv, "idle", "yes");
|
|
mpv_set_option_string(g_state.mpv, "input-default-bindings", "no");
|
|
mpv_set_option_string(g_state.mpv, "osc", "no");
|
|
if (!args.audioDelay.empty()) {
|
|
/* Compensates the frame-copy video-path latency to restore
|
|
* lip-sync; calibrated per platform, see the architecture doc. */
|
|
mpv_set_option_string(g_state.mpv, "audio-delay",
|
|
args.audioDelay.c_str());
|
|
}
|
|
if (mpv_initialize(g_state.mpv) < 0) {
|
|
emitLine(JsonWriter()
|
|
.str("event", "fatal")
|
|
.str("error", "mpv_initialize failed")
|
|
.finish());
|
|
return 1;
|
|
}
|
|
mpv_request_log_messages(g_state.mpv, "warn");
|
|
|
|
double initialVolumePercent =
|
|
std::clamp(args.volume, 0.0, 1.0) * 100.0;
|
|
mpv_set_property(g_state.mpv, "volume", MPV_FORMAT_DOUBLE,
|
|
&initialVolumePercent);
|
|
|
|
mpv_observe_property(g_state.mpv, 1, "time-pos", MPV_FORMAT_DOUBLE);
|
|
mpv_observe_property(g_state.mpv, 2, "duration", MPV_FORMAT_DOUBLE);
|
|
mpv_observe_property(g_state.mpv, 3, "pause", MPV_FORMAT_FLAG);
|
|
mpv_observe_property(g_state.mpv, 4, "volume", MPV_FORMAT_DOUBLE);
|
|
mpv_observe_property(g_state.mpv, 5, "path", MPV_FORMAT_STRING);
|
|
mpv_observe_property(g_state.mpv, 6, "track-list", MPV_FORMAT_NODE);
|
|
mpv_observe_property(g_state.mpv, 7, "aid", MPV_FORMAT_STRING);
|
|
mpv_observe_property(g_state.mpv, 8, "sid", MPV_FORMAT_STRING);
|
|
mpv_observe_property(g_state.mpv, 9, "speed", MPV_FORMAT_DOUBLE);
|
|
mpv_observe_property(g_state.mpv, 10, "video-aspect-override",
|
|
MPV_FORMAT_STRING);
|
|
mpv_observe_property(g_state.mpv, 11, "eof-reached", MPV_FORMAT_FLAG);
|
|
mpv_observe_property(g_state.mpv, 12, "dwidth", MPV_FORMAT_INT64);
|
|
mpv_observe_property(g_state.mpv, 13, "dheight", MPV_FORMAT_INT64);
|
|
|
|
g_state.pipeline.onGenerationChanged = [](const std::string& name,
|
|
int width, int height,
|
|
uint32_t generation) {
|
|
emitLine(JsonWriter()
|
|
.str("event", "shm")
|
|
.str("name", name)
|
|
.num("width", width)
|
|
.num("height", height)
|
|
.num("generation", generation)
|
|
.finish());
|
|
};
|
|
|
|
g_state.viewportWidth = args.width;
|
|
g_state.viewportHeight = args.height;
|
|
|
|
std::string startError;
|
|
if (!g_state.pipeline.start(g_state.mpv, args.shmBase, args.width,
|
|
args.height, startError)) {
|
|
emitLine(JsonWriter()
|
|
.str("event", "fatal")
|
|
.str("error", startError)
|
|
.finish());
|
|
return 1;
|
|
}
|
|
|
|
std::thread renderThread([] { g_state.pipeline.runLoop(); });
|
|
/* The render context is created inside the render thread; hook the
|
|
* update callback once it exists (or bail if GL init failed). */
|
|
while (g_state.pipeline.initState() == 0) {
|
|
std::this_thread::sleep_for(std::chrono::milliseconds(5));
|
|
}
|
|
if (g_state.pipeline.initState() < 0) {
|
|
renderThread.join();
|
|
mpv_terminate_destroy(g_state.mpv);
|
|
return 1;
|
|
}
|
|
mpv_render_context_set_update_callback(g_state.pipeline.renderContext(),
|
|
onRenderUpdate, &g_state.pipeline);
|
|
|
|
#if defined(_WIN32)
|
|
const double helperPid = (double)GetCurrentProcessId();
|
|
#else
|
|
const double helperPid = (double)getpid();
|
|
#endif
|
|
emitLine(JsonWriter()
|
|
.str("event", "hello")
|
|
.num("pid", helperPid)
|
|
.num("protocolVersion", 1)
|
|
.finish());
|
|
|
|
std::thread stdinThread(runStdinLoop);
|
|
runMpvEventLoop();
|
|
|
|
g_state.pipeline.stop();
|
|
renderThread.join();
|
|
mpv_terminate_destroy(g_state.mpv);
|
|
if (stdinThread.joinable()) {
|
|
/* stdin thread exits on EOF; detach if the pipe is still open. */
|
|
stdinThread.detach();
|
|
}
|
|
emitLine(JsonWriter().str("event", "bye").finish());
|
|
return 0;
|
|
}
|