138 lines
2.7 KiB
Go
138 lines
2.7 KiB
Go
package webrtc
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import (
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"bytes"
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"encoding/binary"
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"strconv"
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"github.com/pion/webrtc/v3"
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)
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const OP_MOVE = 0x01
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const OP_SCROLL = 0x02
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const OP_KEY_DOWN = 0x03
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const OP_KEY_UP = 0x04
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const OP_KEY_CLK = 0x05
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type PayloadHeader struct {
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Event uint8
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Length uint16
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}
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type PayloadMove struct {
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PayloadHeader
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X uint16
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Y uint16
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}
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type PayloadScroll struct {
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PayloadHeader
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X int16
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Y int16
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}
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type PayloadKey struct {
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PayloadHeader
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Key uint64
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}
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func (manager *WebRTCManager) handle(id string, msg webrtc.DataChannelMessage) error {
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if !manager.sessions.IsHost(id) {
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return nil
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}
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buffer := bytes.NewBuffer(msg.Data)
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header := &PayloadHeader{}
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hbytes := make([]byte, 3)
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if _, err := buffer.Read(hbytes); err != nil {
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return err
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}
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if err := binary.Read(bytes.NewBuffer(hbytes), binary.LittleEndian, header); err != nil {
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return err
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}
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buffer = bytes.NewBuffer(msg.Data)
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switch header.Event {
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case OP_MOVE:
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payload := &PayloadMove{}
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if err := binary.Read(buffer, binary.LittleEndian, payload); err != nil {
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return err
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}
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manager.remote.Move(int(payload.X), int(payload.Y))
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break
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case OP_SCROLL:
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payload := &PayloadScroll{}
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if err := binary.Read(buffer, binary.LittleEndian, payload); err != nil {
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return err
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}
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manager.logger.
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Debug().
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Str("x", strconv.Itoa(int(payload.X))).
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Str("y", strconv.Itoa(int(payload.Y))).
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Msg("scroll")
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manager.remote.Scroll(int(payload.X), int(payload.Y))
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break
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case OP_KEY_DOWN:
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payload := &PayloadKey{}
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if err := binary.Read(buffer, binary.LittleEndian, payload); err != nil {
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return err
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}
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if payload.Key < 8 {
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err := manager.remote.ButtonDown(int(payload.Key))
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if err != nil {
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manager.logger.Warn().Err(err).Msg("button down failed")
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return nil
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}
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manager.logger.Debug().Msgf("button down %d", payload.Key)
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} else {
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err := manager.remote.KeyDown(uint64(payload.Key))
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if err != nil {
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manager.logger.Warn().Err(err).Msg("key down failed")
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return nil
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}
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manager.logger.Debug().Msgf("key down %d", payload.Key)
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}
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break
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case OP_KEY_UP:
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payload := &PayloadKey{}
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err := binary.Read(buffer, binary.LittleEndian, payload)
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if err != nil {
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return err
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}
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if payload.Key < 8 {
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err := manager.remote.ButtonUp(int(payload.Key))
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if err != nil {
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manager.logger.Warn().Err(err).Msg("button up failed")
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return nil
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}
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manager.logger.Debug().Msgf("button up %d", payload.Key)
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} else {
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err := manager.remote.KeyUp(uint64(payload.Key))
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if err != nil {
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manager.logger.Warn().Err(err).Msg("key up failed")
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return nil
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}
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manager.logger.Debug().Msgf("key up %d", payload.Key)
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}
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break
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case OP_KEY_CLK:
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// unused
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break
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}
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return nil
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}
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