* @brief A graph of FFmpeg filters.
*/
+#include "filter_graph.h"
+#include "filter.h"
+#include "exceptions.h"
+#include "image.h"
+#include "ffmpeg_content.h"
+#include "safe_stringstream.h"
+#include "compose.hpp"
extern "C" {
#include <libavfilter/avfiltergraph.h>
#include <libavfilter/buffersrc.h>
#include <libavfilter/buffersink.h>
#include <libavformat/avio.h>
}
-#include "decoder.h"
-#include "filter_graph.h"
-#include "filter.h"
-#include "exceptions.h"
-#include "image.h"
-#include "ffmpeg_content.h"
-#include "safe_stringstream.h"
#include "i18n.h"
}
_frame = av_frame_alloc ();
-
+
AVFilterGraph* graph = avfilter_graph_alloc();
if (graph == 0) {
throw DecodeError (N_("could not create filter graph."));
pixel_fmts[0] = _pixel_format;
pixel_fmts[1] = PIX_FMT_NONE;
sink_params->pixel_fmts = pixel_fmts;
-
+
if (avfilter_graph_create_filter (&_buffer_sink_context, buffer_sink, N_("out"), 0, sink_params, graph) < 0) {
throw DecodeError (N_("could not create buffer sink."));
}
if (avfilter_graph_parse (graph, filters.c_str(), inputs, outputs, 0) < 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."));
}
-
- avfilter_inout_free (&inputs);
- avfilter_inout_free (&outputs);
}
FilterGraph::~FilterGraph ()
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."));
+ 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));
}
-
+
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);
}
}
-
+
return images;
}