Files
hello-agent/vendor/rustdesk/res/vcpkg/ffmpeg/patch/0004-videotoolbox-changing-bitrate.patch
T
mike f8ead215d8
build-windows / build-hello-agent-x64 (push) Successful in 5m41s
Initial commit: hello-agent — headless RustDesk-protocol-compatible Windows agent
A single-binary, Flutter-free remote-support agent that speaks the stock
RustDesk wire protocol. Designed for one-line MDM deployment against a
self-hosted rustdesk-server: a supporter using the unmodified rustdesk.exe
client connects, the controlled-side user gets a native Win32 approval
prompt, click Yes / No.

CLI surface

    hello-agent.exe --install                # register + start service
    hello-agent.exe --uninstall              # stop, delete, clean up
    hello-agent.exe --config <BLOB>          # admin-UI deploy string
    hello-agent.exe --install --config <BLOB>   # MDM one-liner

--config accepts both forms emitted by the rustdesk-server admin UI: the
reversed-base64 deploy string and the host=,key=,api=,relay= filename
form. Decoded via the upstream custom_server module, persisted via
hbb_common::config::Config::set_option.

Architecture

    --service runs as a Session 0 LocalSystem service. It polls
    WTSGetActiveConsoleSessionId and (re)spawns hello-agent.exe --server
    into the active console session via librustdesk::platform::run_as_user,
    handling the Session 0 → user-session token impersonation.

    --server is the worker. It boots three concurrent components:
      1. cm_popup: an IPC listener on the rustdesk `_cm` named pipe
      2. librustdesk::start_server(true, false): the upstream protocol
         stack — rendezvous mediator, NAT punch, IPC server, screen
         capture, login validation, hbbs_http heartbeat / sysinfo sync
      3. (implicit) ApproveMode::Click is pinned in config, so every
         incoming connection routes through cm_popup

The popup mechanism reuses an existing upstream contract without any
patches to the protocol code: when a peer connects with no password,
Connection::start in the upstream code calls try_start_cm_ipc, which
ipc::connect-s the `_cm` pipe before falling back to spawning a Flutter
CM child. Since cm_popup is up first, step 1 succeeds; we read the
Data::Login{authorized:false} frame, show MessageBoxTimeoutW (Yes/No,
60s, top-most, system-modal), and reply Data::Authorize or Data::Close.

Source tree

    src/main.rs             CLI dispatcher + run_server() composition
    src/cli.rs              hand-rolled argv parser + unit tests
    src/service.rs          windows-service install/uninstall/dispatcher
    src/config_import.rs    --config blob decoding + persistence
    src/cm_popup.rs         _cm IPC listener + Win32 approval dialog

Vendoring

The upstream RustDesk crate is vendored under vendor/rustdesk/ — full
workspace including libs/{hbb_common, scrap, enigo, clipboard,
virtual_display, remote_printer}. This makes the build self-contained
(no submodules, no sibling-repo checkout in CI) and gives us freedom to
fork in a different direction later. Excluded from the vendor: .git,
target/, flutter/, appimage/, flatpak/, fastlane/, docs/, examples/,
ci/, build.py, Dockerfile, upstream README/CLAUDE/AGENTS/GEMINI.

One local divergence vs. upstream: vendor/rustdesk/src/lib.rs flips
`mod custom_server` → `pub mod custom_server` so config_import.rs can
call get_custom_server_from_string without going through the
ui_interface shim. Documented in README.md → "Re-syncing the vendored
copy".

CI

.gitea/workflows/build-windows.yml builds on a self-hosted Windows
runner with Rust 1.75, LLVM 15.0.6 (libclang for bindgen via libvpx-sys),
and a vcpkg cache. The vendored vcpkg.json drives x64-windows-static
deps. The workflow stages the resulting hello-agent.exe into
SignOutput\, reports authenticode signing status (warns on unsigned),
and uploads as artifact. ~15 min full build, faster on incremental.

Out of scope for this commit: Linux/macOS builds, code signing, MSI
packaging, coexistence with stock rustdesk on the same box (currently
shares the RustDesk APP_NAME and config dir).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-08 16:29:31 +02:00

86 lines
3.0 KiB
Diff

From d74de94b49efcf7a0b25673ace6016938d1b9272 Mon Sep 17 00:00:00 2001
From: 21pages <sunboeasy@gmail.com>
Date: Tue, 10 Dec 2024 14:12:01 +0800
Subject: [PATCH 3/5] videotoolbox changing bitrate
Signed-off-by: 21pages <sunboeasy@gmail.com>
---
libavcodec/videotoolboxenc.c | 40 ++++++++++++++++++++++++++++++++++++
1 file changed, 40 insertions(+)
diff --git a/libavcodec/videotoolboxenc.c b/libavcodec/videotoolboxenc.c
index da7b291b03..3c866177f5 100644
--- a/libavcodec/videotoolboxenc.c
+++ b/libavcodec/videotoolboxenc.c
@@ -279,6 +279,8 @@ typedef struct VTEncContext {
int max_slice_bytes;
int power_efficient;
int max_ref_frames;
+
+ int last_bit_rate;
} VTEncContext;
static void vtenc_free_buf_node(BufNode *info)
@@ -1180,6 +1182,7 @@ static int vtenc_create_encoder(AVCodecContext *avctx,
int64_t one_second_value = 0;
void *nums[2];
+ vtctx->last_bit_rate = bit_rate;
int status = VTCompressionSessionCreate(kCFAllocatorDefault,
avctx->width,
avctx->height,
@@ -2638,6 +2641,42 @@ out:
return status;
}
+static void update_config(AVCodecContext *avctx)
+{
+ VTEncContext *vtctx = avctx->priv_data;
+
+ if (avctx->codec_id != AV_CODEC_ID_PRORES) {
+ if (avctx->bit_rate != vtctx->last_bit_rate) {
+ av_log(avctx, AV_LOG_INFO, "Setting bit rate to %d\n", avctx->bit_rate);
+ vtctx->last_bit_rate = avctx->bit_rate;
+ SInt32 bit_rate = avctx->bit_rate;
+ CFNumberRef bit_rate_num = CFNumberCreate(kCFAllocatorDefault,
+ kCFNumberSInt32Type,
+ &bit_rate);
+ if (!bit_rate_num) return;
+
+ if (vtctx->constant_bit_rate) {
+ int status = VTSessionSetProperty(vtctx->session,
+ compat_keys.kVTCompressionPropertyKey_ConstantBitRate,
+ bit_rate_num);
+ if (status == kVTPropertyNotSupportedErr) {
+ av_log(avctx, AV_LOG_ERROR, "Error: -constant_bit_rate true is not supported by the encoder.\n");
+ }
+ } else {
+ int status = VTSessionSetProperty(vtctx->session,
+ kVTCompressionPropertyKey_AverageBitRate,
+ bit_rate_num);
+ if (status) {
+ av_log(avctx, AV_LOG_ERROR, "Error: cannot set average bit rate: %d\n", status);
+ }
+ }
+
+ CFRelease(bit_rate_num);
+ }
+ }
+}
+
+
static av_cold int vtenc_frame(
AVCodecContext *avctx,
AVPacket *pkt,
@@ -2650,6 +2689,7 @@ static av_cold int vtenc_frame(
CMSampleBufferRef buf = NULL;
ExtraSEI sei = {0};
+ update_config(avctx);
if (frame) {
status = vtenc_send_frame(avctx, vtctx, frame);
--
2.43.0.windows.1