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New support for gstreamer video effects in MediaPlayer

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Implementation of the GUI allowing to set the pipeline element description
This commit is contained in:
Bruno Herbelin
2023-08-08 17:43:46 +02:00
parent 5419622c74
commit f75b384c17
3 changed files with 116 additions and 35 deletions
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136
src/SourceControlWindow.cpp
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@@ -20,6 +20,8 @@
#include <iostream>
#include <iomanip>
#include <gst/gst.h>
// ImGui
#include "ImGuiToolkit.h"
#include "imgui_internal.h"
@@ -423,8 +425,8 @@ void SourceControlWindow::Render()
ImGui::EndMenu();
}
// TODO finalize pipeline editor
// if (ImGui::MenuItem(ICON_FA_HAT_WIZARD " gst pipeline"))
// mediaplayer_edit_pipeline_ = true;
if (ImGui::MenuItem(ICON_FA_MAGIC " Video effect"))
mediaplayer_edit_pipeline_ = true;
ImGui::EndMenu();
}
@@ -1792,73 +1794,147 @@ void SourceControlWindow::RenderMediaPlayer(MediaSource *ms)
ImGui::EndPopup();
}
static std::string _effect_description = "";
static bool _effect_description_changed = false;
if (mediaplayer_edit_pipeline_) {
ImGui::OpenPopup("Edit gstreamer pipeline");
// open dialog
ImGui::OpenPopup(ICON_FA_MAGIC " Video effect");
mediaplayer_edit_pipeline_ = false;
// initialize dialog
_effect_description = mediaplayer_active_->videoEffect();
_effect_description_changed = true;
}
const ImVec2 mpp_dialog_size(buttons_width_ * 3.f, buttons_height_ * 6);
ImGui::SetNextWindowSize(mpp_dialog_size, ImGuiCond_Always);
const ImVec2 mpp_dialog_pos = top + rendersize * 0.5f - mpp_dialog_size * 0.5f;
ImGui::SetNextWindowPos(mpp_dialog_pos, ImGuiCond_Always);
if (ImGui::BeginPopupModal("Edit gstreamer pipeline", NULL, ImGuiWindowFlags_NoResize))
if (ImGui::BeginPopupModal(ICON_FA_MAGIC " Video effect", NULL, ImGuiWindowFlags_NoResize))
{
bool update_new_source = false;
const ImVec2 pos = ImGui::GetCursorPos();
const ImVec2 area = ImGui::GetContentRegionAvail();
static uint _status = 0; // 0:unknown, 1:ok, 2:error
static std::string _status_message = "";
static std::vector< std::pair< std::string, std::string> > _examples = { {"Primary color", "frei0r-filter-primaries" },
{"Histogram", "frei0r-filter-rgb-parade"},
{"Histogram", "frei0r-filter-rgb-parade mix=0.5"},
{"Emboss", "frei0r-filter-emboss"},
{"B&W", "frei0r-filter-bw0r"},
{"Gamma", "frei0r-filter-gamma gamma=0.5"},
{"Broken tv", "frei0r-filter-nosync0r "}
{"Denoise", "frei0r-filter-hqdn3d spatial=0.05 temporal=0.1"},
{"Thermal", "coloreffects preset=heat"},
{"Afterimage", "streaktv"}
};
static std::string _description = _examples[0].second;
static ImVec2 fieldsize(ImGui::GetContentRegionAvail().x IMGUI_RIGHT_ALIGN, 100);
static ImVec2 fieldsize(ImGui::GetContentRegionAvail().x IMGUI_RIGHT_ALIGN, 70);
static int numlines = 0;
const ImGuiContext& g = *GImGui;
fieldsize.y = MAX(3, numlines) * g.FontSize + g.Style.ItemSpacing.y + g.Style.FramePadding.y;
fieldsize.y = MAX(2.5, numlines) * g.FontSize + g.Style.ItemSpacing.y + g.Style.FramePadding.y;
ImGui::Spacing();
ImGui::Text("Enter pipeline element and apply:");
ImGui::Text("Enter a gstreamer video effect description and apply.\nLeave empty for no effect.");
ImGui::SameLine();
ImGuiToolkit::HelpToolTip("Video effects are directly integrated in the gstreamer pipeline "
"and performed on CPU (might be slow). Vimix recommends using "
"GPU accelerated filters by cloning the source.");
ImGui::Spacing();
// Editor
if ( ImGuiToolkit::InputCodeMultiline("Filter", &_description, fieldsize, &numlines) )
update_new_source = true;
if ( ImGuiToolkit::InputCodeMultiline("Effect", &_effect_description, fieldsize, &numlines) )
_effect_description_changed = true;
if ( ImGui::IsItemActive() )
_status = 0;
// Local menu for list of examples
ImVec2 pos_bot = ImGui::GetCursorPos();
ImGui::SetCursorPos( pos_bot + ImVec2(fieldsize.x + IMGUI_SAME_LINE, -ImGui::GetFrameHeightWithSpacing()));
if (ImGui::BeginCombo("##Examples", "Examples", ImGuiComboFlags_NoPreview)) {
ImGui::TextDisabled("Gstreamer examples");
ImGui::Separator();
if (ImGui::BeginCombo("##ExamplesVideoEffect", "ExamplesVideoEffect", ImGuiComboFlags_NoPreview | ImGuiComboFlags_HeightLarge)) {
ImGui::TextDisabled("Examples");
for (auto it = _examples.begin(); it != _examples.end(); ++it) {
if (ImGui::Selectable( it->first.c_str() ) ) {
_description = it->second;
update_new_source = true;
_effect_description = it->second;
_effect_description_changed = true;
}
}
ImGui::Separator();
ImGui::TextDisabled("Explore online");
if (ImGui::Selectable( ICON_FA_EXTERNAL_LINK_ALT " Frei0r" ) )
SystemToolkit::open("https://gstreamer.freedesktop.org/documentation/frei0r");
if (ImGui::Selectable( ICON_FA_EXTERNAL_LINK_ALT " Effectv" ) )
SystemToolkit::open("https://gstreamer.freedesktop.org/documentation/effectv");
if (ImGui::Selectable( ICON_FA_EXTERNAL_LINK_ALT " Gaudi" ) )
SystemToolkit::open("https://gstreamer.freedesktop.org/documentation/gaudieffects");
if (ImGui::Selectable( ICON_FA_EXTERNAL_LINK_ALT " Geometric" ) )
SystemToolkit::open("https://gstreamer.freedesktop.org/documentation/geometrictransform");
ImGui::EndCombo();
}
// Local menu for clearing
ImGui::SameLine();
if ( ImGuiToolkit::ButtonIcon(11,13,"Clear") ) {
_effect_description = "";
_effect_description_changed = true;
}
// TODO use update_new_source
// if desciption changed, start a timeout to test the pipeline
if ( _effect_description_changed ){
// reset to status 'unknown' and no message
_status = 0;
_status_message.clear();
// No description, no effect
if ( _effect_description.empty() ) {
_status = 1;
_status_message = "(no video effect)";
}
// has a description, we test it
else {
GError *error = NULL;
GstElement *effect = gst_parse_launch( _effect_description.c_str(), &error);
// on error
if (effect == NULL || error != NULL) {
_status = 2;
if (error != NULL)
_status_message = error->message;
g_clear_error (&error);
if (effect)
gst_object_unref(effect);
}
// on success
else
_status = 1;
}
// done
_effect_description_changed = false;
}
// display message line
if (_status > 1) {
// On Error
ImGui::PushStyleColor(ImGuiCol_Text, ImVec4(1.0, 0.2, 0.2, 0.95f));
ImGui::Text("Error - %s", _status_message.c_str());
ImGui::PopStyleColor(1);
}
else if (_status > 0) {
// All ok
ImGui::PushStyleColor(ImGuiCol_Text, ImVec4(0.2, 1.0, 0.2, 0.85f));
ImGui::Text("Ok %s", _status_message.c_str());
ImGui::PopStyleColor(1);
}
bool close = false;
ImGui::SetCursorPos(pos + ImVec2(0.f, area.y - buttons_height_));
if (ImGui::Button(ICON_FA_TIMES " Cancel", ImVec2(area.x * 0.3f, 0)))
close = true;
ImGui::SetCursorPos(pos + ImVec2(area.x * 0.7f, area.y - buttons_height_));
ImGui::PushStyleColor(ImGuiCol_Button, ImGui::GetStyleColorVec4(ImGuiCol_Tab));
if (ImGui::Button(ICON_FA_CHECK " Apply", ImVec2(area.x * 0.3f, 0))
|| ImGui::IsKeyPressedMap(ImGuiKey_Enter) || ImGui::IsKeyPressedMap(ImGuiKey_KeyPadEnter) ) {
close = true;
// on success status, offer to apply
if (_status == 1) {
ImGui::PushStyleColor(ImGuiCol_Button, ImGui::GetStyleColorVec4(ImGuiCol_Tab));
if (ImGui::Button(ICON_FA_CHECK " Apply", ImVec2(area.x * 0.3f, 0))
|| ImGui::IsKeyPressedMap(ImGuiKey_Enter) || ImGui::IsKeyPressedMap(ImGuiKey_KeyPadEnter) ) {
close = true;
// apply to pipeline
mediaplayer_active_->setVideoEffect(_description);
// apply to pipeline
mediaplayer_active_->setVideoEffect(_effect_description);
}
ImGui::PopStyleColor(1);
}
ImGui::PopStyleColor(1);
else
ImGuiToolkit::ButtonDisabled(ICON_FA_CHECK " Apply", ImVec2(area.x * 0.3f, 0));
if (close)
ImGui::CloseCurrentPopup();