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feat: use ffmpeg to render http camera stream

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This commit is contained in:
Ian Chua
2026-09-04 16:42:36 +08:00
parent 2f82cfe40f
commit dbcb82075f
5 changed files with 48 additions and 23 deletions
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src/slic3r/GUI/wxMediaCtrl3.cpp
+28 -8
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@@ -188,14 +188,14 @@ void wxMediaCtrl3::bambu_log(void *ctx, int level, tchar const *msg2)
BOOST_LOG_TRIVIAL(info) << msg.ToUTF8().data();
}
int wxMediaCtrl3::rtsp_interrupt_callback(void *opaque)
int wxMediaCtrl3::ffmpeg_interrupt_callback(void *opaque)
{
auto *ctrl = static_cast<wxMediaCtrl3 *>(opaque);
std::lock_guard<std::mutex> lock(ctrl->m_mutex);
return ctrl->m_url != ctrl->m_active_url;
}
int wxMediaCtrl3::PlayRtsp(std::shared_ptr<wxURI> const &url, std::unique_lock<std::mutex> &lock)
int wxMediaCtrl3::PlayFfmpeg(std::shared_ptr<wxURI> const &url, std::unique_lock<std::mutex> &lock)
{
if (avformat_network_init() < 0)
return 2;
@@ -206,7 +206,9 @@ int wxMediaCtrl3::PlayRtsp(std::shared_ptr<wxURI> const &url, std::unique_lock<s
return 2;
}
format_context->interrupt_callback = {&wxMediaCtrl3::rtsp_interrupt_callback, this};
format_context->interrupt_callback = {&wxMediaCtrl3::ffmpeg_interrupt_callback, this};
format_context->flags |= AVFMT_FLAG_NOBUFFER;
format_context->max_delay = 0;
m_active_url = url;
auto finish = [&](int error) {
@@ -219,8 +221,20 @@ int wxMediaCtrl3::PlayRtsp(std::shared_ptr<wxURI> const &url, std::unique_lock<s
};
const std::string uri = url->BuildURI().ToUTF8().data();
const wxString scheme = url->GetScheme();
const bool http_stream = scheme.CmpNoCase("http") == 0 || scheme.CmpNoCase("https") == 0;
AVDictionary *options = nullptr;
av_dict_set(&options, "rtsp_transport", "tcp", 0);
if (http_stream) {
// This is a live multipart MJPEG stream. Keep FFmpeg from building a
// read-ahead buffer, otherwise the UI can display frames several
// seconds behind the camera.
av_dict_set(&options, "fflags", "nobuffer", 0);
av_dict_set(&options, "avioflags", "direct", 0);
av_dict_set(&options, "probesize", "32", 0);
av_dict_set(&options, "analyzeduration", "0", 0);
} else {
av_dict_set(&options, "rtsp_transport", "tcp", 0);
}
lock.unlock();
int error = avformat_open_input(&format_context, uri.c_str(), nullptr, &options);
av_dict_free(&options);
@@ -278,7 +292,12 @@ int wxMediaCtrl3::PlayRtsp(std::shared_ptr<wxURI> const &url, std::unique_lock<s
break;
if (frame.IsOk())
m_frame = frame;
CallAfter([this] { Refresh(); });
if (!m_refresh_pending.exchange(true)) {
CallAfter([this] {
m_refresh_pending.store(false);
Refresh();
});
}
}
}
av_packet_unref(packet);
@@ -301,10 +320,11 @@ void wxMediaCtrl3::PlayThread()
if (!url->HasScheme())
break;
const wxString scheme = url->GetScheme();
const bool generic_rtsp = scheme.CmpNoCase("rtsp") == 0 || scheme.CmpNoCase("rtsps") == 0;
const bool generic_ffmpeg = scheme.CmpNoCase("http") == 0 || scheme.CmpNoCase("https") == 0 ||
scheme.CmpNoCase("rtsp") == 0 || scheme.CmpNoCase("rtsps") == 0;
int error = 0;
if (generic_rtsp) {
error = PlayRtsp(url, lk);
if (generic_ffmpeg) {
error = PlayFfmpeg(url, lk);
} else {
lk.unlock();
Bambu_Tunnel tunnel = nullptr;