#include "compose.hpp"
+#include "dcpomatic_assert.h"
+#include "exceptions.h"
#include "image.h"
#include "video_filter_graph.h"
-#include "warnings.h"
+#include <dcp/scope_guard.h>
extern "C" {
#include <libavfilter/buffersrc.h>
#include <libavfilter/buffersink.h>
}
+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();
+ }
+
+ dcp::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(make_shared<Image>(frame, Image::Alignment::PADDED), frame->best_effort_timestamp));