/*
- Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2012-2021 Carl Hetherington <cth@carlh.net>
This file is part of DCP-o-matic.
*/
+
/** @file src/lib/filter_graph.cc
* @brief A graph of FFmpeg filters.
*/
+
#include "filter_graph.h"
#include "filter.h"
#include "exceptions.h"
#include "image.h"
#include "compose.hpp"
extern "C" {
-#include <libavfilter/avfiltergraph.h>
#include <libavfilter/buffersrc.h>
#include <libavfilter/buffersink.h>
#include <libavformat/avio.h>
#include "i18n.h"
+
using std::string;
using std::list;
using std::pair;
using std::make_pair;
using std::cout;
using std::vector;
-using boost::shared_ptr;
-using boost::weak_ptr;
+using std::shared_ptr;
+using std::weak_ptr;
using dcp::Size;
-/** Construct a FilterGraph for the settings in a piece of content */
-FilterGraph::FilterGraph ()
- : _graph (0)
- , _copy (false)
- , _buffer_src_context (0)
- , _buffer_sink_context (0)
- , _frame (0)
-{
-
-}
void
FilterGraph::setup (vector<Filter const *> filters)
{
- string const filters_string = Filter::ffmpeg_string (filters);
- if (filters.empty ()) {
+ auto const filters_string = Filter::ffmpeg_string (filters);
+ if (filters.empty()) {
_copy = true;
return;
}
throw DecodeError (N_("could not create filter graph."));
}
- AVFilter* buffer_src = avfilter_get_by_name (src_name().c_str());
+ auto const buffer_src = avfilter_get_by_name (src_name().c_str());
if (!buffer_src) {
throw DecodeError (N_("could not find buffer src filter"));
}
- AVFilter* buffer_sink = avfilter_get_by_name (sink_name().c_str());
+ auto const buffer_sink = avfilter_get_by_name (sink_name().c_str());
if (!buffer_sink) {
throw DecodeError (N_("Could not create buffer sink filter"));
}
throw DecodeError (N_("could not create buffer source"));
}
- void* sink_params = sink_parameters ();
-
- if (avfilter_graph_create_filter (&_buffer_sink_context, buffer_sink, N_("out"), 0, sink_params, _graph) < 0) {
+ if (avfilter_graph_create_filter (&_buffer_sink_context, buffer_sink, N_("out"), nullptr, nullptr, _graph) < 0) {
throw DecodeError (N_("could not create buffer sink."));
}
- av_free (sink_params);
+ set_parameters (_buffer_sink_context);
- AVFilterInOut* outputs = avfilter_inout_alloc ();
+ auto outputs = avfilter_inout_alloc ();
outputs->name = av_strdup(N_("in"));
outputs->filter_ctx = _buffer_src_context;
outputs->pad_idx = 0;
outputs->next = 0;
- AVFilterInOut* inputs = avfilter_inout_alloc ();
+ auto inputs = avfilter_inout_alloc ();
inputs->name = av_strdup(N_("out"));
inputs->filter_ctx = _buffer_sink_context;
inputs->pad_idx = 0;
throw DecodeError (N_("could not set up filter graph."));
}
- if (avfilter_graph_config (_graph, 0) < 0) {
- throw DecodeError (N_("could not configure filter graph."));
+ int e = avfilter_graph_config (_graph, 0);
+ if (e < 0) {
+ throw DecodeError (String::compose(N_("could not configure filter graph (%1)"), e));
}
}
+
FilterGraph::~FilterGraph ()
{
if (_frame) {
}
}
+
AVFilterContext *
FilterGraph::get (string name)
{
- return avfilter_graph_get_filter (_graph, name.c_str ());
+ return avfilter_graph_get_filter (_graph, name.c_str());
}