Add modular capture backends, resolution profiles, Wayland support
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Hoid
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3b363192f2
commit
80ba9b1b90
16 changed files with 2266 additions and 45 deletions
303
pkg/engine/capture/backends/spice.go
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303
pkg/engine/capture/backends/spice.go
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// SPICE protocol capture for QEMU/KVM virtual machines.
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package backends
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import (
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"fmt"
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"image"
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"net"
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"time"
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"git.cloonar.com/openclawd/iso-bot/pkg/engine/capture"
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)
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// SpiceConfig holds configuration for SPICE capture.
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type SpiceConfig struct {
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// Host is the SPICE server hostname or IP address.
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Host string `yaml:"host"`
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// Port is the SPICE server port (default 5900).
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Port int `yaml:"port"`
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// Password for SPICE authentication (optional).
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Password string `yaml:"password"`
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// TLSPort is the secure SPICE port (if using TLS).
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TLSPort int `yaml:"tls_port"`
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// UseTLS enables encrypted connection.
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UseTLS bool `yaml:"use_tls"`
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// CACertFile path to CA certificate for TLS verification.
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CACertFile string `yaml:"ca_cert_file"`
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// Channels specifies which SPICE channels to use (display, inputs, etc.).
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Channels []string `yaml:"channels"`
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// ConnectTimeout is the timeout for initial connection.
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ConnectTimeoutMs int `yaml:"connect_timeout_ms"`
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// ImageCompression sets the preferred image compression type.
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ImageCompression string `yaml:"image_compression"` // "auto", "quic", "glz", "lz"
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}
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// SpiceSource captures frames from a QEMU/KVM VM via SPICE protocol.
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type SpiceSource struct {
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config SpiceConfig
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conn net.Conn
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sessionID uint32
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channels map[string]*SpiceChannel
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displays []*SpiceDisplay
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width int
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height int
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connected bool
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}
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// SpiceChannel represents a SPICE protocol channel.
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type SpiceChannel struct {
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Type string
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ID int
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Conn net.Conn
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Sequence uint64
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}
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// SpiceDisplay represents a display surface in SPICE.
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type SpiceDisplay struct {
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ID uint32
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Width int
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Height int
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Format SpicePixelFormat
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Data []byte
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}
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// SpicePixelFormat describes pixel format used by SPICE.
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type SpicePixelFormat struct {
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BitsPerPixel int
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BytesPerPixel int
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RedShift int
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GreenShift int
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BlueShift int
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RedMask uint32
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GreenMask uint32
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BlueMask uint32
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}
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// NewSpiceSource creates a SPICE capture source.
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func NewSpiceSource(configMap map[string]interface{}) (capture.Source, error) {
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var config SpiceConfig
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// Extract config from map
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if host, ok := configMap["host"].(string); ok {
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config.Host = host
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} else {
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return nil, fmt.Errorf("spice host is required")
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}
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if port, ok := configMap["port"].(int); ok {
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config.Port = port
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} else {
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config.Port = 5900 // Default SPICE port
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}
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if password, ok := configMap["password"].(string); ok {
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config.Password = password
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}
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if tlsPort, ok := configMap["tls_port"].(int); ok {
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config.TLSPort = tlsPort
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} else {
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config.TLSPort = 5901 // Default TLS port
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}
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if useTLS, ok := configMap["use_tls"].(bool); ok {
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config.UseTLS = useTLS
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}
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if caCert, ok := configMap["ca_cert_file"].(string); ok {
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config.CACertFile = caCert
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}
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if channels, ok := configMap["channels"].([]string); ok {
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config.Channels = channels
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} else {
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config.Channels = []string{"display", "inputs"} // Default channels
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}
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if connectTimeout, ok := configMap["connect_timeout_ms"].(int); ok {
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config.ConnectTimeoutMs = connectTimeout
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} else {
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config.ConnectTimeoutMs = 10000 // 10 seconds
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}
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if compression, ok := configMap["image_compression"].(string); ok {
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config.ImageCompression = compression
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} else {
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config.ImageCompression = "auto"
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}
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return &SpiceSource{
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config: config,
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channels: make(map[string]*SpiceChannel),
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displays: make([]*SpiceDisplay, 0),
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}, nil
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}
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// Name returns a description of this capture source.
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func (s *SpiceSource) Name() string {
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return fmt.Sprintf("SPICE: %s:%d", s.config.Host, s.config.Port)
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}
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// Capture grabs a single frame from the SPICE display.
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func (s *SpiceSource) Capture() (image.Image, error) {
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if !s.connected {
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if err := s.connect(); err != nil {
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return nil, fmt.Errorf("failed to connect to SPICE server: %w", err)
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}
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}
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// TODO: Implement SPICE frame capture
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// 1. Check for display updates on the display channel
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// 2. Process SPICE display commands (draw operations)
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// 3. Update local framebuffer with received display data
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// 4. Convert framebuffer to Go image.Image
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return nil, fmt.Errorf("SPICE capture not implemented yet")
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}
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// CaptureRegion grabs a sub-region of the SPICE display.
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func (s *SpiceSource) CaptureRegion(r capture.Region) (image.Image, error) {
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// TODO: Implement region capture
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// SPICE may support partial updates, otherwise crop full frame
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fullFrame, err := s.Capture()
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if err != nil {
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return nil, err
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}
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// Crop the image to the specified region
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bounds := image.Rect(r.X, r.Y, r.X+r.Width, r.Y+r.Height)
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return fullFrame.(interface{
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SubImage(r image.Rectangle) image.Image
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}).SubImage(bounds), nil
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}
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// Size returns the SPICE display dimensions.
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func (s *SpiceSource) Size() (width, height int) {
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return s.width, s.height
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}
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// Close disconnects from the SPICE server.
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func (s *SpiceSource) Close() error {
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s.connected = false
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// Close all channels
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for _, channel := range s.channels {
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if channel.Conn != nil {
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channel.Conn.Close()
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}
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}
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if s.conn != nil {
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return s.conn.Close()
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}
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return nil
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}
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// connect establishes connection to SPICE server and performs handshake.
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func (s *SpiceSource) connect() error {
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// TODO: Implement SPICE connection and protocol handshake
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// 1. Connect to main channel (host:port)
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// 2. Exchange SPICE link messages
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// 3. Authenticate (if password required)
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// 4. Establish display and input channels
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// 5. Get display configuration
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port := s.config.Port
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if s.config.UseTLS {
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port = s.config.TLSPort
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}
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addr := fmt.Sprintf("%s:%d", s.config.Host, port)
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conn, err := net.DialTimeout("tcp", addr, time.Duration(s.config.ConnectTimeoutMs)*time.Millisecond)
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if err != nil {
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return fmt.Errorf("failed to connect to %s: %w", addr, err)
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}
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s.conn = conn
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s.connected = true
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return fmt.Errorf("SPICE handshake not implemented")
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}
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// performHandshake handles SPICE protocol negotiation.
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func (s *SpiceSource) performHandshake() error {
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// TODO: Implement SPICE handshake
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// 1. Send SpiceLinkMess with supported channels and capabilities
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// 2. Receive SpiceLinkReply
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// 3. Authenticate with password (if required)
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// 4. Establish channels based on configuration
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return fmt.Errorf("SPICE handshake not implemented")
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}
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// connectChannel establishes a specific SPICE channel.
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func (s *SpiceSource) connectChannel(channelType string, channelID int) (*SpiceChannel, error) {
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// TODO: Connect to specific SPICE channel
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// 1. Open new connection for channel
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// 2. Send channel link messages
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// 3. Complete channel-specific handshake
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// 4. Setup message processing for channel type
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return nil, fmt.Errorf("SPICE channel connection not implemented")
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}
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// processDisplayMessages handles messages on the display channel.
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func (s *SpiceSource) processDisplayMessages() error {
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// TODO: Process SPICE display messages
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// Handle messages like:
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// - SPICE_MSG_DISPLAY_MODE (display mode change)
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// - SPICE_MSG_DISPLAY_MARK (display updates)
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// - SPICE_MSG_DISPLAY_RESET (display reset)
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// - SPICE_MSG_DISPLAY_COPY_BITS (copy operation)
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// - SPICE_MSG_DISPLAY_INVAL_ALL_PIXMAPS (invalidate caches)
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// - Various draw operations (draw_alpha, draw_copy, etc.)
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return fmt.Errorf("SPICE display message processing not implemented")
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}
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// updateDisplay processes a display update command.
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func (s *SpiceSource) updateDisplay(displayID uint32, x, y, width, height int, data []byte) error {
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// TODO: Update local framebuffer with received display data
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// 1. Find or create display surface
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// 2. Decompress image data (if compressed)
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// 3. Update framebuffer region
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return fmt.Errorf("SPICE display update not implemented")
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}
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// decompressImage decompresses SPICE image data based on format.
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func (s *SpiceSource) decompressImage(data []byte, compression string) ([]byte, error) {
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// TODO: Implement SPICE image decompression
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// Support formats: QUIC, GLZ, LZ, JPEG
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switch compression {
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case "quic":
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return s.decompressQUIC(data)
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case "glz":
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return s.decompressGLZ(data)
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case "lz":
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return s.decompressLZ(data)
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default:
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return data, nil // Uncompressed
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}
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}
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// decompressQUIC decompresses QUIC-compressed image data.
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func (s *SpiceSource) decompressQUIC(data []byte) ([]byte, error) {
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// TODO: Implement QUIC decompression
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return nil, fmt.Errorf("QUIC decompression not implemented")
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}
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// decompressGLZ decompresses GLZ-compressed image data.
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func (s *SpiceSource) decompressGLZ(data []byte) ([]byte, error) {
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// TODO: Implement GLZ decompression
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return nil, fmt.Errorf("GLZ decompression not implemented")
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}
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// decompressLZ decompresses LZ-compressed image data.
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func (s *SpiceSource) decompressLZ(data []byte) ([]byte, error) {
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// TODO: Implement LZ decompression
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return nil, fmt.Errorf("LZ decompression not implemented")
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}
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