我使用以下代码使用 flutter-webrtc 包进行视频通话，该代码在网络中有效，但在 Android 中崩溃 一切都已更新，我使用所有工具的最新版本。我将编译Sdk版本设置为32
import 'dart:convert';
import 'package:flutter/material.dart';
import 'package:flutter_webrtc/flutter_webrtc.dart';
import 'package:sdp_transform/sdp_transform.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({Key? key}) : super(key: key);
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: const MyHomePage(title: 'Flutter Demo Home Page'),
);
}
}
class MyHomePage extends StatefulWidget {
const MyHomePage({Key? key, required this.title}) : super(key: key);
final String title;
@override
State<MyHomePage> createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
final _localVideoRenderer = RTCVideoRenderer(
);
final _remoteVideoRenderer = RTCVideoRenderer();
final sdpController = TextEditingController();
bool _offer = false;
RTCPeerConnection? _peerConnection;
MediaStream? _localStream;
initRenderer() async {
await _localVideoRenderer.initialize();
await _remoteVideoRenderer.initialize();
}
_getUserMedia() async {
final Map<String, dynamic> mediaConstraints = {
'audio': true,
'video': true
};
MediaStream stream =
await navigator.mediaDevices.getUserMedia(mediaConstraints);
_localVideoRenderer.srcObject = stream;
return stream;
}
_createPeerConnecion() async {
Map<String, dynamic> configuration = {
"iceServers": [
{"url": "stun:stun.l.google.com:19302"},
]
};
final Map<String, dynamic> offerSdpConstraints = {
"mandatory": {
"OfferToReceiveAudio": true,
"OfferToReceiveVideo": true,
},
"optional": [],
};
_localStream = await _getUserMedia();
RTCPeerConnection pc =
await createPeerConnection(configuration, offerSdpConstraints);
pc.addStream(_localStream!);
pc.onIceCandidate = (e) {
if (e.candidate != null) {
print(json.encode({
'candidate': e.candidate.toString(),
'sdpMid': e.sdpMid.toString(),
'sdpMlineIndex': e.sdpMLineIndex,
}));
}
};
pc.onIceConnectionState = (e) {
print(e);
};
pc.onAddStream = (stream) {
print('addStream: ' + stream.id);
_remoteVideoRenderer.srcObject = stream;
};
return pc;
}
void _createOffer() async {
RTCSessionDescription description =
await _peerConnection!.createOffer({'offerToReceiveVideo': 1});
var session = parse(description.sdp.toString());
print(json.encode(session));
_offer = true;
_peerConnection!.setLocalDescription(description);
}
void _createAnswer() async {
RTCSessionDescription description =
await _peerConnection!.createAnswer({'offerToReceiveVideo': 1});
var session = parse(description.sdp.toString());
print(json.encode(session));
_peerConnection!.setLocalDescription(description);
}
void _setRemoteDescription() async {
String jsonString = sdpController.text;
dynamic session = await jsonDecode(jsonString);
String sdp = write(session, null);
RTCSessionDescription description =
RTCSessionDescription(sdp, _offer ? 'answer' : 'offer');
print(description.toMap());
await _peerConnection!.setRemoteDescription(description);
}
void _addCandidate() async {
String jsonString = sdpController.text;
dynamic session = await jsonDecode(jsonString);
print(session['candidate']);
dynamic candidate = RTCIceCandidate(
session['candidate'], session['sdpMid'], session['sdpMlineIndex']);
await _peerConnection!.addCandidate(candidate);
}
@override
void initState() {
initRenderer();
_createPeerConnecion().then((pc) {
_peerConnection = pc;
});
// _getUserMedia();
super.initState();
}
@override
void dispose() async {
await _localVideoRenderer.dispose();
sdpController.dispose();
super.dispose();
}
SizedBox videoRenderers() => SizedBox(
height: 210,
child: Column(children: [
Flexible(
child: Container(
key: const Key('local'),
margin: const EdgeInsets.fromLTRB(5.0, 5.0, 5.0, 5.0),
decoration: const BoxDecoration(color: Colors.black),
child: RTCVideoView(_localVideoRenderer),
),
),
Flexible(
child: Container(
key: const Key('remote'),
margin: const EdgeInsets.fromLTRB(5.0, 5.0, 5.0, 5.0),
decoration: const BoxDecoration(color: Colors.black),
child: RTCVideoView(_remoteVideoRenderer),
),
),
]),
);
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: Column(
children: [
videoRenderers(),
Row(
children: [
Padding(
padding: const EdgeInsets.all(16.0),
child: SizedBox(
width: MediaQuery.of(context).size.width * 0.5,
child: TextField(
controller: sdpController,
keyboardType: TextInputType.multiline,
maxLines: 4,
maxLength: TextField.noMaxLength,
),
),
),
Column(
crossAxisAlignment: CrossAxisAlignment.center,
children: [
ElevatedButton(
onPressed: _createOffer,
child: const Text("Offer"),
),
const SizedBox(
height: 10,
),
ElevatedButton(
onPressed: _createAnswer,
child: const Text("Answer"),
),
const SizedBox(
height: 10,
),
ElevatedButton(
onPressed: _setRemoteDescription,
child: const Text("Set Remote Description"),
),
const SizedBox(
height: 10,
),
ElevatedButton(
onPressed: _addCandidate,
child: const Text("Set Candidate"),
),
],
)
],
),
],
));
}
}
使用-v后将此日志代码返回给我
[+2824 ms] I/org.webrtc.Logging(12049): EglRenderer: Duration: 4003 ms. Frames received: 0. Dropped: 0. Rendered: 0. Render fps: .0. Average render time: NA. Average swapBuffer time: NA.
[ +142 ms] I/FlutterWebRTCPlugin(12049): getUserMedia(audio): mandatory: [], optional: [googNoiseSuppression: true, googEchoCancellation: true, echoCancellation: true, googEchoCancellation2: true, googDAEchoCancellation: true]
[ ] I/FlutterWebRTCPlugin(12049): getUserMedia(video): null
[ ] I/CameraManagerGlobal(12049): Connecting to camera service
[ +16 ms] D/EGL_emulation(12049): app_time_stats: avg=7500.71ms min=43.54ms max=14957.89ms count=2
[ +5 ms] D/FlutterWebRTCPlugin(12049): Creating video capturer using Camera2 API.
[ +5 ms] D/FlutterWebRTCPlugin(12049): Create front camera 1 succeeded
[ +3 ms] D/HostConnection(12049): createUnique: call
[ ] D/HostConnection(12049): HostConnection::get() New Host Connection established 0x7c7e120f9150, tid 12168
[ +6 ms] D/HostConnection(12049): HostComposition ext ANDROID_EMU_CHECKSUM_HELPER_v1 ANDROID_EMU_native_sync_v2 ANDROID_EMU_native_sync_v3 ANDROID_EMU_native_sync_v4 ANDROID_EMU_dma_v1 ANDROID_EMU_direct_mem ANDROID_EMU_host_composition_v1 ANDROID_EMU_host_composition_v2 ANDROID_EMU_vulkan ANDROID_EMU_deferred_vulkan_commands ANDROID_EMU_vulkan_null_optional_strings ANDROID_EMU_vulkan_create_resources_with_requirements ANDROID_EMU_YUV_Cache ANDROID_EMU_vulkan_ignored_handles ANDROID_EMU_has_shared_slots_host_memory_allocator ANDROID_EMU_vulkan_free_memory_sync ANDROID_EMU_vulkan_shader_float16_int8 ANDROID_EMU_vulkan_async_queue_submit ANDROID_EMU_vulkan_queue_submit_with_commands ANDROID_EMU_sync_buffer_data ANDROID_EMU_read_color_buffer_dma GL_OES_EGL_image_external_essl3 GL_OES_vertex_array_object GL_KHR_texture_compression_astc_ldr ANDROID_EMU_host_side_tracing ANDROID_EMU_gles_max_version_3_1
[ ] I/org.webrtc.Logging(12049): EglBase14Impl: Using OpenGL ES version 2
[ ] D/EGL_emulation(12049): eglCreateContext: 0x7c7e120f8910: maj 3 min 1 rcv 4
[ +1 ms] D/EGL_emulation(12049): eglMakeCurrent: 0x7c7e120f8910: ver 3 1 (tinfo 0x7c802a65b380) (first time)
[ +1 ms] E/EGL_emulation(12049): eglQueryContext 32c0 EGL_BAD_ATTRIBUTE
[ ] E/EGL_emulation(12049): tid 12168: eglQueryContext(2160): error 0x3004 (EGL_BAD_ATTRIBUTE)
[ ] I/org.webrtc.Logging(12049): CameraCapturer: startCapture: 1280x720@30
[ ] D/FlutterWebRTCPlugin(12049): changeCaptureFormat: 1280x720@30
[ +1 ms] I/org.webrtc.Logging(12049): Camera2Session: Create new camera2 session on camera 1
[ ] I/org.webrtc.Logging(12049): Camera2Session: start
[ +1 ms] D/FlutterWebRTCPlugin(12049): MediaStream id: 6d00bd17-0818-4d0f-92f6-4f860f3f28e7
[ +2 ms] I/flutter (12049): here2
[ +1 ms] I/flutter (12049): here3
[ +3 ms] I/org.webrtc.Logging(12049): Camera2Session: Available preview sizes: [1920x1440, 1920x1080, 1920x960, 1600x1200, 1440x1080, 1280x960, 1280x720, 1024x768, 800x600, 720x480, 640x480, 640x360, 352x288, 320x240, 176x144]
[ ] I/org.webrtc.Logging(12049): Camera2Session: Available fps ranges: [[15.0:15.0], [7.0:30.0], [15.0:30.0], [30.0:30.0]]
[ ] I/org.webrtc.Logging(12049): Camera2Session: Using capture format: 1280x720@[7.0:30.0]
[ ] I/org.webrtc.Logging(12049): Camera2Session: Opening camera 1
[ ] D/FlutterWebRTCPlugin(12049): CameraEventsHandler.onCameraOpening: cameraName=1
[ +7 ms] W/FlutterWebRTCPlugin(12049): FlutterRTCVideoRenderer.setVideoTrack, set video track to cd1aeae1-28eb-4a89-bbb7-54c3508e9832
[ ] I/org.webrtc.Logging(12049): EglRenderer: Releasing.
[ +1 ms] I/org.webrtc.Logging(12049): EglRenderer: eglBase detach and release.
[ ] I/org.webrtc.Logging(12049): EglRenderer: Quitting render thread.
[ +2 ms] I/org.webrtc.Logging(12049): EglRenderer: Releasing done.
[ ] I/org.webrtc.Logging(12049): EglRenderer: Initializing EglRenderer
[ ] I/org.webrtc.Logging(12049): EglRenderer: EglBase.create shared context
[ ] D/HostConnection(12049): createUnique: call
[ ] D/HostConnection(12049): HostConnection::get() New Host Connection established 0x7c7e120f5550, tid 12169
[ +5 ms] D/HostConnection(12049): HostComposition ext ANDROID_EMU_CHECKSUM_HELPER_v1 ANDROID_EMU_native_sync_v2 ANDROID_EMU_native_sync_v3 ANDROID_EMU_native_sync_v4 ANDROID_EMU_dma_v1 ANDROID_EMU_direct_mem ANDROID_EMU_host_composition_v1 ANDROID_EMU_host_composition_v2 ANDROID_EMU_vulkan ANDROID_EMU_deferred_vulkan_commands ANDROID_EMU_vulkan_null_optional_strings ANDROID_EMU_vulkan_create_resources_with_requirements ANDROID_EMU_YUV_Cache ANDROID_EMU_vulkan_ignored_handles ANDROID_EMU_has_shared_slots_host_memory_allocator ANDROID_EMU_vulkan_free_memory_sync ANDROID_EMU_vulkan_shader_float16_int8 ANDROID_EMU_vulkan_async_queue_submit ANDROID_EMU_vulkan_queue_submit_with_commands ANDROID_EMU_sync_buffer_data ANDROID_EMU_read_color_buffer_dma GL_OES_EGL_image_external_essl3 GL_OES_vertex_array_object GL_KHR_texture_compression_astc_ldr ANDROID_EMU_host_side_tracing ANDROID_EMU_gles_max_version_3_1
[ ] I/org.webrtc.Logging(12049): EglBase14Impl: Using OpenGL ES version 2
[ +2 ms] D/EGL_emulation(12049): eglCreateContext: 0x7c7e120f5fd0: maj 3 min 1 rcv 4
[ +1 ms] D/EGL_emulation(12049): eglMakeCurrent: 0x7c7e120f5fd0: ver 3 1 (tinfo 0x7c802a65b280) (first time)
[ +72 ms] I/org.webrtc.Logging(12049): Camera2Session: Camera opened.
[ +9 ms] I/org.webrtc.Logging(12049): Camera2Session: Camera capture session configured.
[ +4 ms] I/org.webrtc.Logging(12049): Camera2Session: Stabilization not available.
[ +1 ms] I/org.webrtc.Logging(12049): Camera2Session: Using continuous video auto-focus.
[ +2 ms] W/FlutterWebRTCPlugin(12049): audioFocusChangeListener [Speakerphone(name=Speakerphone), Earpiece(name=Earpiece)] Speakerphone(name=Speakerphone)
[ ] I/flutter (12049): here4
[ +8 ms] I/flutter (12049): here5
[ +3 ms] I/flutter (12049): here6
[ +5 ms] I/flutter (12049): here7
[ +6 ms] I/flutter (12049): here8
[ +5 ms] I/org.webrtc.Logging(12049): Camera2Session: Camera device successfully started.
[ ] I/org.webrtc.Logging(12049): CameraCapturer: Create session done. Switch state: IDLE
[ +38 ms] I/org.webrtc.Logging(12049): SurfaceTextureHelper: Setting listener to org.webrtc.Camera2Session$CaptureSessionCallback$$ExternalSyntheticLambda0@b337dc6
[ +19 ms] E/rtc (12049): #
[ ] E/rtc (12049): # Fatal error in: ../../pc/peer_connection.cc, line 823
[ ] E/rtc (12049): # last system error: 0
[ ] E/rtc (12049): # Check failed: !IsUnifiedPlan()
[ ] E/rtc (12049): # AddStream is not available with Unified Plan SdpSemantics. Please use AddTrack instead.
[ +50 ms] D/FlutterWebRTCPlugin(12049): CameraEventsHandler.onFirstFrameAvailable
[ +215 ms] F/libc (12049): Fatal signal 6 (SIGABRT), code -6 (SI_TKILL) in tid 12158 (signaling_threa), pid 12049 (example.meetbin)
[ +345 ms] *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
[ ] Build fingerprint: 'google/sdk_gphone64_x86_64/emulator64_x86_64_arm64:12/SE1A.220630.001/8789670:userdebug/dev-keys'
[ ] Revision: '0'
[ ] ABI: 'x86_64'
[ ] Timestamp: 2022-12-10 16:58:42.309837842+0330
[ ] Process uptime: 0s
[ ] Cmdline: com.example.meetbin
[ ] pid: 12049, tid: 12158, name: signaling_threa >>> com.example.meetbin <<<
[ ] uid: 10187
[ ] signal 6 (SIGABRT), code -6 (SI_TKILL), fault addr --------
[ ] rax 0000000000000000 rbx 0000000000002f11 rcx 00007c80141355cf rdx 0000000000000006
[ ] r8 00007c7e32114eb0 r9 00007c7e32114eb0 r10 00007c7d002fb910 r11 0000000000000207
[ ] r12 00007c7bf61b7e4f r13 00007c7d002fbc40 r14 00007c7d002fb908 r15 0000000000002f7e
[ ] rdi 0000000000002f11 rsi 0000000000002f7e
[ ] rbp 00007c7d002fba18 rsp 00007c7d002fb900 rip 00007c80141355cf
[ ] backtrace:
[ ] #00 pc 000000000005e5cf /apex/com.android.runtime/lib64/bionic/libc.so (abort+191) (BuildId: 5db8d317d3741b337ef046540bbdd0f7)
[ ] #01 pc 000000000056d2f1 /data/app/~~G9ljGq1djjR8w8Pu4e90qg==/com.example.meetbin-50CjO9EMjWwQX8M0TvtAXw==/base.apk!libjingle_peerconnection_so.so (BuildId: 6090771d6338227b)
[ ] #02 pc 000000000056d269 /data/app/~~G9ljGq1djjR8w8Pu4e90qg==/com.example.meetbin-50CjO9EMjWwQX8M0TvtAXw==/base.apk!libjingle_peerconnection_so.so (BuildId: 6090771d6338227b)
[ ] #03 pc 00000000004fbb9f /data/app/~~G9ljGq1djjR8w8Pu4e90qg==/com.example.meetbin-50CjO9EMjWwQX8M0TvtAXw==/base.apk!libjingle_peerconnection_so.so (BuildId: 6090771d6338227b)
[ ] #04 pc 00000000004f4f0e /data/app/~~G9ljGq1djjR8w8Pu4e90qg==/com.example.meetbin-50CjO9EMjWwQX8M0TvtAXw==/base.apk!libjingle_peerconnection_so.so (BuildId: 6090771d6338227b)
[ ] #05 pc 00000000004f4ec2 /data/app/~~G9ljGq1djjR8w8Pu4e90qg==/com.example.meetbin-50CjO9EMjWwQX8M0TvtAXw==/base.apk!libjingle_peerconnection_so.so (BuildId: 6090771d6338227b)
[ ] #06 pc 0000000000593bed /data/app/~~G9ljGq1djjR8w8Pu4e90qg==/com.example.meetbin-50CjO9EMjWwQX8M0TvtAXw==/base.apk!libjingle_peerconnection_so.so (BuildId: 6090771d6338227b)
[ ] #07 pc 00000000005934ea /data/app/~~G9ljGq1djjR8w8Pu4e90qg==/com.example.meetbin-50CjO9EMjWwQX8M0TvtAXw==/base.apk!libjingle_peerconnection_so.so (BuildId: 6090771d6338227b)
[ ] #08 pc 000000000059282e /data/app/~~G9ljGq1djjR8w8Pu4e90qg==/com.example.meetbin-50CjO9EMjWwQX8M0TvtAXw==/base.apk!libjingle_peerconnection_so.so (BuildId: 6090771d6338227b)
[ ] #09 pc 000000000059384d /data/app/~~G9ljGq1djjR8w8Pu4e90qg==/com.example.meetbin-50CjO9EMjWwQX8M0TvtAXw==/base.apk!libjingle_peerconnection_so.so (BuildId: 6090771d6338227b)
[ ] #10 pc 00000000000c758a /apex/com.android.runtime/lib64/bionic/libc.so (__pthread_start(void*)+58) (BuildId: 5db8d317d3741b337ef046540bbdd0f7)
[ ] #11 pc 000000000005fd87 /apex/com.android.runtime/lib64/bionic/libc.so (__start_thread+55) (BuildId: 5db8d317d3741b337ef046540bbdd0f7)
[ +91 ms] Service protocol connection closed.
[ ] Lost connection to device.
[ ] DevFS: Deleting filesystem on the device (file:///data/user/0/com.example.meetbin/code_cache/meetbin_appNWCNXA/meetbin_app/)
[ +21 ms] executing: /home/dwalves/Documents/development/android/SDK/platform-tools/adb -s emulator-5554 shell am force-stop com.example.meetbin
flutter_webrtc: ^0.9.17
sdp_transform: ^0.3.2
我猜不出问题是什么
更新您的对等连接配置以包含“sdpSemantics”
检查主要问题
Map<String, dynamic> configuration = {
"sdpSemantics": "plan-b", // Add this line
'iceServers': [
{
'urls': [
// ice server urls
]
}
]
};
不知道这是否能为你提供线索。虽然我使用 RTCPeerConnection.addTrack 而不是 RTCPeerConnection.addStream，但我的问题是我遵循 https://developer.mozilla.org/en-US/docs/Web/API/RTCPeerConnection/addTrack 的文档，其中写着“如果没有指定了流，则轨道是无流的，这是完全可以接受的，尽管将由远程对等方决定将轨道插入哪个流（如果有）。”但flutter_webrtc的实现不同，你必须为轨道指定一个流：
_localStream = await navigator.mediaDevices.getUserMedia(
{
'audio': true,
'video': true,
},
);
for (var track in _localStream.getTracks()) {
_pc.addTrack(track, _localStream);
// _pc.addTrack(track); // This will crash the app.
}