Files
vimix/GstToolkit.cpp
2021-11-21 16:52:09 +01:00

294 lines
8.4 KiB
C++

/*
* This file is part of vimix - video live mixer
*
* **Copyright** (C) 2020-2021 Bruno Herbelin <bruno.herbelin@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
**/
#include <sstream>
#include <iomanip>
using namespace std;
#include <gst/gl/gl.h>
#include "GstToolkit.h"
string GstToolkit::time_to_string(guint64 t, time_string_mode m)
{
if (t == GST_CLOCK_TIME_NONE) {
switch (m) {
case TIME_STRING_FIXED:
return "00:00:00.00";
case TIME_STRING_MINIMAL:
return "0.0";
case TIME_STRING_READABLE:
return "0 second";
default:
return "00.00";
}
}
guint ms = GST_TIME_AS_MSECONDS(t);
guint s = ms / 1000;
ostringstream oss;
// READABLE : long format
if (m == TIME_STRING_READABLE) {
int count = 0;
if (s / 3600) {
oss << s / 3600 << " h ";
count++;
}
if ((s % 3600) / 60) {
oss << (s % 3600) / 60 << " min ";
count++;
}
if (count < 2) {
oss << setw(count > 0 ? 2 : 1) << setfill('0') << (s % 3600) % 60;
count++;
}
if (count < 2 )
oss << '.'<< setw(1) << setfill('0') << (ms % 1000) / 100;
oss << " sec";
}
// MINIMAL: keep only the 2 higher values (most significant)
else if (m == TIME_STRING_MINIMAL) {
int count = 0;
if (s / 3600) {
oss << s / 3600 << ':';
count++;
}
if ((s % 3600) / 60) {
oss << (s % 3600) / 60 << ':';
count++;
}
if (count < 2) {
oss << setw(count > 0 ? 2 : 1) << setfill('0') << (s % 3600) % 60;
count++;
}
if (count < 2 )
oss << '.'<< setw(2) << setfill('0') << (ms % 1000) / 10;
}
else {
// TIME_STRING_FIXED : fixed length string (11 chars) HH:mm:ss.ii"
// TIME_STRING_RIGHT : always show the right part (seconds), not the min or hours if none
if (m == TIME_STRING_FIXED || (s / 3600) )
oss << setw(2) << setfill('0') << s / 3600 << ':';
if (m == TIME_STRING_FIXED || ((s % 3600) / 60) )
oss << setw(2) << setfill('0') << (s % 3600) / 60 << ':';
oss << setw(2) << setfill('0') << (s % 3600) % 60 << '.';
oss << setw(2) << setfill('0') << (ms % 1000) / 10;
}
return oss.str();
}
std::string GstToolkit::filename_to_uri(std::string path)
{
if (path.empty())
return path;
// set uri to open
gchar *uritmp = gst_filename_to_uri(path.c_str(), NULL);
std::string uri( uritmp );
g_free(uritmp);
return uri;
}
list<string> GstToolkit::all_plugins()
{
list<string> pluginlist;
GList *l, *g;
l = gst_registry_get_plugin_list (gst_registry_get ());
for (g = l; g; g = g->next) {
GstPlugin *plugin = GST_PLUGIN (g->data);
pluginlist.push_front( string( gst_plugin_get_name (plugin) ) );
}
gst_plugin_list_free (l);
return pluginlist;
}
list<string> GstToolkit::all_plugin_features(string pluginname)
{
list<string> featurelist;
GList *l, *g;
l = gst_registry_get_feature_list_by_plugin (gst_registry_get (), pluginname.c_str());
for (g = l; g; g = g->next) {
GstPluginFeature *feature = GST_PLUGIN_FEATURE (g->data);
featurelist.push_front( string( gst_plugin_feature_get_name (feature) ) );
}
gst_plugin_feature_list_free (l);
return featurelist;
}
bool GstToolkit::enable_feature (string name, bool enable) {
GstRegistry *registry = NULL;
GstElementFactory *factory = NULL;
registry = gst_registry_get();
if (!registry) return false;
factory = gst_element_factory_find (name.c_str());
if (!factory) return false;
if (enable) {
gst_plugin_feature_set_rank (GST_PLUGIN_FEATURE (factory), GST_RANK_PRIMARY + 1);
}
else {
gst_plugin_feature_set_rank (GST_PLUGIN_FEATURE (factory), GST_RANK_NONE);
}
gst_registry_add_feature (registry, GST_PLUGIN_FEATURE (factory));
return true;
}
bool GstToolkit::has_feature (string name)
{
if (name.empty())
return false;
GstRegistry *registry = NULL;
GstElementFactory *factory = NULL;
registry = gst_registry_get();
if (!registry) return false;
factory = gst_element_factory_find (name.c_str());
if (!factory) return false;
return true;
}
string GstToolkit::gst_version()
{
std::ostringstream oss;
oss << GST_VERSION_MAJOR << '.' << GST_VERSION_MINOR << '.';
oss << std::setw(2) << setfill('0') << GST_VERSION_MICRO ;
if (GST_VERSION_NANO > 0)
oss << ( (GST_VERSION_NANO < 2 ) ? " - (CVS)" : " - (Prerelease)");
return oss.str();
}
#if GST_GL_HAVE_PLATFORM_GLX
// https://gstreamer.freedesktop.org/documentation/nvcodec/index.html?gi-language=c#plugin-nvcodec
const char *plugins[11] = { "omxmpeg4videodec", "omxmpeg2dec", "omxh264dec", "vdpaumpegdec",
"nvh264dec", "nvh265dec", "nvmpeg2videodec",
"nvmpeg4videodec", "nvvp8dec", "nvvp9dec", "vaapidecodebin"
};
const int N = 11;
#elif GST_GL_HAVE_PLATFORM_CGL
const char *plugins[2] = { "vtdec_hw", "vtdechw" };
const int N = 2;
#else
const char *plugins[0] = { };
const int N = 0;
#endif
// see https://developer.ridgerun.com/wiki/index.php?title=GStreamer_modify_the_elements_rank
std::list<std::string> GstToolkit::enable_gpu_decoding_plugins(bool enable)
{
list<string> plugins_list_;
static GstRegistry* plugins_register = nullptr;
if ( plugins_register == nullptr )
plugins_register = gst_registry_get();
static bool enabled_ = false;
if (enabled_ != enable) {
enabled_ = enable;
for (int i = 0; i < N; i++) {
GstPluginFeature* feature = gst_registry_lookup_feature(plugins_register, plugins[i]);
if(feature != NULL) {
plugins_list_.push_front( string( plugins[i] ) );
gst_plugin_feature_set_rank(feature, enable ? GST_RANK_PRIMARY + 1 : GST_RANK_MARGINAL);
gst_object_unref(feature);
}
}
}
return plugins_list_;
}
std::string GstToolkit::used_gpu_decoding_plugins(GstElement *gstbin)
{
std::string found = "";
GstIterator* it = gst_bin_iterate_recurse(GST_BIN(gstbin));
GValue value = G_VALUE_INIT;
for(GstIteratorResult r = gst_iterator_next(it, &value); r != GST_ITERATOR_DONE; r = gst_iterator_next(it, &value))
{
if ( r == GST_ITERATOR_OK )
{
GstElement *e = static_cast<GstElement*>(g_value_peek_pointer(&value));
if (e) {
gchar *name = gst_element_get_name(e);
// g_print(" - %s", name);
std::string e_name(name);
g_free(name);
for (int i = 0; i < N; i++) {
if (e_name.find(plugins[i]) != std::string::npos) {
found = plugins[i];
break;
}
}
}
}
g_value_unset(&value);
}
gst_iterator_free(it);
return found;
}
std::string GstToolkit::used_decoding_plugins(GstElement *gstbin)
{
std::string found = "";
GstIterator* it = gst_bin_iterate_recurse(GST_BIN(gstbin));
GValue value = G_VALUE_INIT;
for(GstIteratorResult r = gst_iterator_next(it, &value); r != GST_ITERATOR_DONE; r = gst_iterator_next(it, &value))
{
if ( r == GST_ITERATOR_OK )
{
GstElement *e = static_cast<GstElement*>(g_value_peek_pointer(&value));
if (e) {
gchar *name = gst_element_get_name(e);
found += std::string(name) + ", ";
}
}
g_value_unset(&value);
}
gst_iterator_free(it);
return found;
}