* @param p Pixel format of the images to process.
*/
FilterGraph::FilterGraph (shared_ptr<const FFmpegContent> content, dcp::Size s, AVPixelFormat p)
- : _buffer_src_context (0)
+ : _copy (false)
+ , _buffer_src_context (0)
, _buffer_sink_context (0)
, _size (s)
, _pixel_format (p)
+ , _frame (0)
{
- _frame = av_frame_alloc ();
-
- string filters = Filter::ffmpeg_strings (content->filters()).first;
+ string const filters = Filter::ffmpeg_string (content->filters());
if (filters.empty ()) {
- filters = "copy";
+ _copy = true;
+ return;
}
+ _frame = av_frame_alloc ();
+
AVFilterGraph* graph = avfilter_graph_alloc();
if (graph == 0) {
throw DecodeError (N_("could not create filter graph."));
FilterGraph::~FilterGraph ()
{
- av_frame_free (&_frame);
+ if (_frame) {
+ av_frame_free (&_frame);
+ }
}
/** Take an AVFrame and process it using our configured filters, returning a
{
list<pair<shared_ptr<Image>, int64_t> > images;
- if (av_buffersrc_write_frame (_buffer_src_context, frame) < 0) {
- throw DecodeError (N_("could not push buffer into filter chain."));
- }
-
- while (1) {
- if (av_buffersink_get_frame (_buffer_sink_context, _frame) < 0) {
- break;
+ if (_copy) {
+ images.push_back (make_pair (shared_ptr<Image> (new Image (frame)), av_frame_get_best_effort_timestamp (frame)));
+ } else {
+ if (av_buffersrc_write_frame (_buffer_src_context, frame) < 0) {
+ throw DecodeError (N_("could not push buffer into filter chain."));
+ }
+
+ while (true) {
+ if (av_buffersink_get_frame (_buffer_sink_context, _frame) < 0) {
+ break;
+ }
+
+ images.push_back (make_pair (shared_ptr<Image> (new Image (_frame)), av_frame_get_best_effort_timestamp (_frame)));
+ av_frame_unref (_frame);
}
-
- images.push_back (make_pair (shared_ptr<Image> (new Image (_frame)), av_frame_get_best_effort_timestamp (_frame)));
- av_frame_unref (_frame);
}
-
+
return images;
}