/*
- Copyright (C) 2012-2015 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2012-2021 Carl Hetherington <cth@carlh.net>
This file is part of DCP-o-matic.
*/
-#include "video_filter_graph.h"
-#include "image.h"
+
#include "compose.hpp"
+#include "dcpomatic_assert.h"
+#include "exceptions.h"
+#include "image.h"
+#include "scope_guard.h"
+#include "video_filter_graph.h"
extern "C" {
#include <libavfilter/buffersrc.h>
#include <libavfilter/buffersink.h>
+#include <libavutil/opt.h>
}
#include "i18n.h"
+
using std::list;
+using std::make_pair;
+using std::make_shared;
using std::pair;
-using std::vector;
+using std::shared_ptr;
using std::string;
-using std::make_pair;
-using boost::shared_ptr;
-VideoFilterGraph::VideoFilterGraph (dcp::Size s, AVPixelFormat p)
+
+VideoFilterGraph::VideoFilterGraph (dcp::Size s, AVPixelFormat p, dcp::Fraction r)
: _size (s)
, _pixel_format (p)
+ , _frame_rate (r)
{
}
+
+list<shared_ptr<const Image>>
+VideoFilterGraph::process(shared_ptr<const Image> image)
+{
+ if (_copy) {
+ return { image };
+ }
+
+ auto frame = av_frame_alloc();
+ if (!frame) {
+ throw std::bad_alloc();
+ }
+
+ ScopeGuard sg = [&frame]() { av_frame_free(&frame); };
+
+ for (int i = 0; i < image->planes(); ++i) {
+ frame->data[i] = image->data()[i];
+ frame->linesize[i] = image->stride()[i];
+ }
+
+ frame->width = image->size().width;
+ frame->height = image->size().height;
+ frame->format = image->pixel_format();
+
+ int r = av_buffersrc_write_frame(_buffer_src_context, frame);
+ if (r < 0) {
+ throw DecodeError(String::compose(N_("could not push buffer into filter chain (%1)."), r));
+ }
+
+ list<shared_ptr<const Image>> images;
+
+ while (true) {
+ if (av_buffersink_get_frame(_buffer_sink_context, _frame) < 0) {
+ break;
+ }
+
+ images.push_back(make_shared<Image>(_frame, Image::Alignment::PADDED));
+ av_frame_unref (_frame);
+ }
+
+ return images;
+}
+
+
/** Take an AVFrame and process it using our configured filters, returning a
* set of Images. Caller handles memory management of the input frame.
*/
-list<pair<shared_ptr<Image>, int64_t> >
+list<pair<shared_ptr<const Image>, int64_t>>
VideoFilterGraph::process (AVFrame* frame)
{
- list<pair<shared_ptr<Image>, int64_t> > images;
+ list<pair<shared_ptr<const Image>, int64_t>> images;
if (_copy) {
- images.push_back (make_pair (shared_ptr<Image> (new Image (frame)), av_frame_get_best_effort_timestamp (frame)));
+ images.push_back (make_pair(make_shared<Image>(frame, Image::Alignment::PADDED), frame->best_effort_timestamp));
} else {
int r = av_buffersrc_write_frame (_buffer_src_context, frame);
if (r < 0) {
- throw DecodeError (String::compose (N_("could not push buffer into filter chain (%1)."), r));
+ throw DecodeError (String::compose(N_("could not push buffer into filter chain (%1)."), r));
}
while (true) {
break;
}
- images.push_back (make_pair (shared_ptr<Image> (new Image (_frame)), av_frame_get_best_effort_timestamp (_frame)));
+ images.push_back (make_pair(make_shared<Image>(_frame, Image::Alignment::PADDED), frame->best_effort_timestamp));
av_frame_unref (_frame);
}
}
return images;
}
+
/** @param s Image size.
* @param p Pixel format.
* @return true if this chain can process images with `s' and `p', otherwise false.
return (_size == s && _pixel_format == p);
}
+
string
VideoFilterGraph::src_parameters () const
{
- SafeStringStream a;
-
- a << "video_size=" << _size.width << "x" << _size.height << ":"
- << "pix_fmt=" << _pixel_format << ":"
- << "time_base=1/1:"
- << "pixel_aspect=1/1";
-
- return a.str ();
+ char buffer[256];
+ snprintf (
+ buffer, sizeof(buffer),
+ "video_size=%dx%d:pix_fmt=%d:frame_rate=%d/%d:time_base=1/1:pixel_aspect=1/1",
+ _size.width, _size.height,
+ _pixel_format,
+ _frame_rate.numerator, _frame_rate.denominator
+ );
+ return buffer;
}
-void *
-VideoFilterGraph::sink_parameters () const
+
+void
+VideoFilterGraph::set_parameters (AVFilterContext* context) const
{
- AVBufferSinkParams* sink_params = av_buffersink_params_alloc ();
- AVPixelFormat* pixel_fmts = new AVPixelFormat[2];
- pixel_fmts[0] = _pixel_format;
- pixel_fmts[1] = AV_PIX_FMT_NONE;
- sink_params->pixel_fmts = pixel_fmts;
- return sink_params;
+ AVPixelFormat pix_fmts[] = { _pixel_format, AV_PIX_FMT_NONE };
+ int r = av_opt_set_int_list (context, "pix_fmts", pix_fmts, AV_PIX_FMT_NONE, AV_OPT_SEARCH_CHILDREN);
+ DCPOMATIC_ASSERT (r >= 0);
}
+
string
VideoFilterGraph::src_name () const
{
return "buffer";
}
+
string
VideoFilterGraph::sink_name () const
{