*/
+/** @file src/lib/filter_graph.cc
+ * @brief A graph of FFmpeg filters.
+ */
+
extern "C" {
#include <libavfilter/avfiltergraph.h>
#include <libavfilter/buffersrc.h>
-#if (LIBAVFILTER_VERSION_MAJOR == 2 && LIBAVFILTER_VERSION_MINOR >= 53 && LIBAVFILTER_VERSION_MINOR <= 77) || LIBAVFILTER_VERSION_MAJOR == 3
#include <libavfilter/avcodec.h>
#include <libavfilter/buffersink.h>
-#elif LIBAVFILTER_VERSION_MAJOR == 2 && LIBAVFILTER_VERSION_MINOR == 15
-#include <libavfilter/vsrc_buffer.h>
-#endif
#include <libavformat/avio.h>
}
#include "decoder.h"
#include "filter_graph.h"
-#include "ffmpeg_compatibility.h"
#include "filter.h"
#include "exceptions.h"
#include "image.h"
-#include "film.h"
-#include "ffmpeg_decoder.h"
+#include "ffmpeg_content.h"
+
+#include "i18n.h"
using std::stringstream;
using std::string;
using std::list;
+using std::pair;
+using std::make_pair;
+using std::cout;
using boost::shared_ptr;
-
-FilterGraph::FilterGraph (shared_ptr<Film> film, FFmpegDecoder* decoder, bool crop, Size s, AVPixelFormat p)
+using boost::weak_ptr;
+using dcp::Size;
+
+/** Construct a FilterGraph for the settings in a piece of content.
+ * @param content Content.
+ * @param s Size of the images to process.
+ * @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)
, _buffer_sink_context (0)
, _size (s)
, _pixel_format (p)
{
- string filters = Filter::ffmpeg_strings (film->filters()).first;
- if (!filters.empty ()) {
- filters += ",";
- }
-
- if (crop) {
- filters += crop_string (Position (film->crop().left, film->crop().top), film->cropped_size (decoder->native_size()));
- } else {
- filters += crop_string (Position (0, 0), decoder->native_size());
+ _frame = av_frame_alloc ();
+
+ string filters = Filter::ffmpeg_string (content->filters());
+ if (filters.empty ()) {
+ filters = "copy";
}
- avfilter_register_all ();
-
AVFilterGraph* graph = avfilter_graph_alloc();
if (graph == 0) {
- throw DecodeError ("Could not create filter graph.");
+ throw DecodeError (N_("could not create filter graph."));
}
- AVFilter* buffer_src = avfilter_get_by_name("buffer");
+ AVFilter* buffer_src = avfilter_get_by_name(N_("buffer"));
if (buffer_src == 0) {
- throw DecodeError ("Could not find buffer src filter");
+ throw DecodeError (N_("could not find buffer src filter"));
}
- AVFilter* buffer_sink = get_sink ();
+ AVFilter* buffer_sink = avfilter_get_by_name(N_("buffersink"));
+ if (buffer_sink == 0) {
+ throw DecodeError (N_("Could not create buffer sink filter"));
+ }
stringstream a;
- a << _size.width << ":"
- << _size.height << ":"
- << _pixel_format << ":"
- << decoder->time_base_numerator() << ":"
- << decoder->time_base_denominator() << ":"
- << decoder->sample_aspect_ratio_numerator() << ":"
- << decoder->sample_aspect_ratio_denominator();
-
- int r;
-
- if ((r = avfilter_graph_create_filter (&_buffer_src_context, buffer_src, "in", a.str().c_str(), 0, graph)) < 0) {
- throw DecodeError ("could not create buffer source");
+ a << "video_size=" << _size.width << "x" << _size.height << ":"
+ << "pix_fmt=" << _pixel_format << ":"
+ << "time_base=1/1:"
+ << "pixel_aspect=1/1";
+
+ if (avfilter_graph_create_filter (&_buffer_src_context, buffer_src, "in", a.str().c_str(), 0, graph) < 0) {
+ throw DecodeError (N_("could not create buffer source"));
}
AVBufferSinkParams* sink_params = av_buffersink_params_alloc ();
pixel_fmts[1] = PIX_FMT_NONE;
sink_params->pixel_fmts = pixel_fmts;
- if (avfilter_graph_create_filter (&_buffer_sink_context, buffer_sink, "out", 0, sink_params, graph) < 0) {
- throw DecodeError ("could not create buffer sink.");
+ 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."));
}
+ av_free (sink_params);
+
AVFilterInOut* outputs = avfilter_inout_alloc ();
- outputs->name = av_strdup("in");
+ outputs->name = av_strdup(N_("in"));
outputs->filter_ctx = _buffer_src_context;
outputs->pad_idx = 0;
outputs->next = 0;
AVFilterInOut* inputs = avfilter_inout_alloc ();
- inputs->name = av_strdup("out");
+ inputs->name = av_strdup(N_("out"));
inputs->filter_ctx = _buffer_sink_context;
inputs->pad_idx = 0;
inputs->next = 0;
-#if LIBAVFILTER_VERSION_MAJOR == 2 && LIBAVFILTER_VERSION_MINOR == 15
- if (avfilter_graph_parse (graph, filters.c_str(), inputs, outputs, 0) < 0) {
- throw DecodeError ("could not set up filter graph.");
- }
-#else
if (avfilter_graph_parse (graph, filters.c_str(), &inputs, &outputs, 0) < 0) {
- throw DecodeError ("could not set up filter graph.");
+ throw DecodeError (N_("could not set up filter graph."));
}
-#endif
if (avfilter_graph_config (graph, 0) < 0) {
- throw DecodeError ("could not configure filter graph.");
+ throw DecodeError (N_("could not configure filter graph."));
}
- /* XXX: leaking `inputs' / `outputs' ? */
+ avfilter_inout_free (&inputs);
+ avfilter_inout_free (&outputs);
}
-list<shared_ptr<Image> >
-FilterGraph::process (AVFrame const * frame)
+FilterGraph::~FilterGraph ()
{
- list<shared_ptr<Image> > images;
-
-#if LIBAVFILTER_VERSION_MAJOR == 2 && LIBAVFILTER_VERSION_MINOR >= 53 && LIBAVFILTER_VERSION_MINOR <= 61
-
- if (av_vsrc_buffer_add_frame (_buffer_src_context, frame, 0) < 0) {
- throw DecodeError ("could not push buffer into filter chain.");
- }
-
-#elif LIBAVFILTER_VERSION_MAJOR == 2 && LIBAVFILTER_VERSION_MINOR == 15
-
- AVRational par;
- par.num = sample_aspect_ratio_numerator ();
- par.den = sample_aspect_ratio_denominator ();
-
- if (av_vsrc_buffer_add_frame (_buffer_src_context, frame, 0, par) < 0) {
- throw DecodeError ("could not push buffer into filter chain.");
- }
+ av_frame_free (&_frame);
+}
-#else
+/** 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> >
+FilterGraph::process (AVFrame* frame)
+{
+ list<pair<shared_ptr<Image>, int64_t> > images;
if (av_buffersrc_write_frame (_buffer_src_context, frame) < 0) {
- throw DecodeError ("could not push buffer into filter chain.");
+ throw DecodeError (N_("could not push buffer into filter chain."));
}
-#endif
-
-#if LIBAVFILTER_VERSION_MAJOR == 2 && LIBAVFILTER_VERSION_MINOR >= 15 && LIBAVFILTER_VERSION_MINOR <= 61
- while (avfilter_poll_frame (_buffer_sink_context->inputs[0])) {
-#else
- while (av_buffersink_read (_buffer_sink_context, 0)) {
-#endif
-
-#if LIBAVFILTER_VERSION_MAJOR == 2 && LIBAVFILTER_VERSION_MINOR >= 15
-
- int r = avfilter_request_frame (_buffer_sink_context->inputs[0]);
- if (r < 0) {
- throw DecodeError ("could not request filtered frame");
- }
-
- AVFilterBufferRef* filter_buffer = _buffer_sink_context->inputs[0]->cur_buf;
-
-#else
-
- AVFilterBufferRef* filter_buffer;
- if (av_buffersink_get_buffer_ref (_buffer_sink_context, &filter_buffer, 0) < 0) {
- filter_buffer = 0;
+ while (1) {
+ if (av_buffersink_get_frame (_buffer_sink_context, _frame) < 0) {
+ break;
}
-#endif
-
- if (filter_buffer) {
- /* This takes ownership of filter_buffer */
- images.push_back (shared_ptr<Image> (new FilterBufferImage ((PixelFormat) frame->format, filter_buffer)));
- }
+ images.push_back (make_pair (shared_ptr<Image> (new Image (_frame)), av_frame_get_best_effort_timestamp (_frame)));
+ 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.
+ */
bool
-FilterGraph::can_process (Size s, AVPixelFormat p) const
+FilterGraph::can_process (dcp::Size s, AVPixelFormat p) const
{
return (_size == s && _pixel_format == p);
}
projects / dcpomatic.git / blobdiff