#include <iostream>
#include <stdint.h>
#include <boost/lexical_cast.hpp>
-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 "film.h"
#include "format.h"
#include "job.h"
#include "util.h"
#include "log.h"
#include "decoder.h"
-#include "filter.h"
#include "delay_line.h"
-#include "ffmpeg_compatibility.h"
#include "subtitle.h"
+#include "filter_graph.h"
using std::string;
using std::stringstream;
using std::min;
+using std::list;
using boost::shared_ptr;
/** @param f Film.
* @param j Job that we are running within, or 0
* @param minimal true to do the bare minimum of work; just run through the content. Useful for acquiring
* accurate frame counts as quickly as possible. This generates no video or audio output.
- * @param ignore_length Ignore the content's claimed length when computing progress.
*/
-Decoder::Decoder (boost::shared_ptr<Film> f, boost::shared_ptr<const Options> o, Job* j, bool minimal, bool ignore_length)
+Decoder::Decoder (boost::shared_ptr<Film> f, boost::shared_ptr<const Options> o, Job* j, bool minimal)
: _film (f)
, _opt (o)
, _job (j)
, _minimal (minimal)
- , _ignore_length (ignore_length)
- , _video_frame (0)
- , _buffer_src_context (0)
- , _buffer_sink_context (0)
- , _have_setup_video_filters (false)
+ , _video_frame_index (0)
, _delay_line (0)
, _delay_in_bytes (0)
, _audio_frames_processed (0)
{
- if (_opt->decode_video_frequency != 0 && !_film->length()) {
- throw DecodeError ("cannot do a partial decode if length is unknown");
- }
+
}
Decoder::~Decoder ()
in to get it to the right length.
*/
- int64_t const video_length_in_audio_frames = ((int64_t) last_video_frame() * audio_sample_rate() / frames_per_second());
+ int64_t const video_length_in_audio_frames = ((int64_t) video_frame_index() * audio_sample_rate() / frames_per_second());
int64_t const audio_short_by_frames = video_length_in_audio_frames - _audio_frames_processed;
- _log->log (
- String::compose ("DCP length is %1 (%2 audio frames); %3 frames of audio processed.",
- last_video_frame(),
+ _film->log()->log (
+ String::compose ("Source length is %1 (%2 audio frames); %3 frames of audio processed.",
+ video_frame_index(),
video_length_in_audio_frames,
_audio_frames_processed)
);
if (audio_short_by_frames >= 0 && _opt->decode_audio) {
- _log->log (String::compose ("DCP length is %1; %2 frames of audio processed.", last_video_frame(), _audio_frames_processed));
- _log->log (String::compose ("Adding %1 frames of silence to the end.", audio_short_by_frames));
+ _film->log()->log (String::compose ("Source length is %1; %2 frames of audio processed.", video_frame_index(), _audio_frames_processed));
+ _film->log()->log (String::compose ("Adding %1 frames of silence to the end.", audio_short_by_frames));
/* XXX: this is slightly questionable; does memset () give silence with all
sample formats?
while (pass () == false) {
if (_job && _film->dcp_length()) {
- _job->set_progress (float (_video_frame) / _film->dcp_length().get());
+ SourceFrame const p = _video_frame_index - _film->dcp_trim_start();
+ _job->set_progress (float (p) / _film->dcp_length().get());
}
}
process_end ();
}
-/** Run one pass. This may or may not generate any actual video / audio data;
- * some decoders may require several passes to generate a single frame.
- * @return true if we have finished processing all data; otherwise false.
- */
-bool
-Decoder::pass ()
-{
- if (!_have_setup_video_filters) {
- setup_video_filters ();
- _have_setup_video_filters = true;
- }
-
- if (!_ignore_length && _video_frame >= _film->dcp_length()) {
- return true;
- }
-
- return do_pass ();
-}
-
/** Called by subclasses to tell the world that some audio data is ready
* @param data Audio data, in Film::audio_sample_format.
* @param size Number of bytes of data.
void
Decoder::emit_audio (uint8_t* data, int size)
{
+ if (size == 0) {
+ return;
+ }
+
+ assert (_film->audio_channels());
+ assert (bytes_per_audio_sample());
+
/* Deinterleave and convert to float */
- assert ((size % (bytes_per_audio_sample() * _film->audio_channels())) == 0);
+ assert ((size % (bytes_per_audio_sample() * audio_channels())) == 0);
int const total_samples = size / bytes_per_audio_sample();
int const frames = total_samples / _film->audio_channels();
- shared_ptr<AudioBuffers> audio (new AudioBuffers (_film->audio_channels(), frames));
+ shared_ptr<AudioBuffers> audio (new AudioBuffers (audio_channels(), frames));
switch (audio_sample_format()) {
case AV_SAMPLE_FMT_S16:
void
Decoder::process_video (AVFrame* frame)
{
+ assert (_film->length());
+
if (_minimal) {
- ++_video_frame;
+ ++_video_frame_index;
return;
}
/* Use Film::length here as our one may be wrong */
- int gap = 0;
- if (_opt->decode_video_frequency != 0) {
- gap = _film->length().get() / _opt->decode_video_frequency;
- }
-
- if (_opt->decode_video_frequency != 0 && gap != 0 && (_video_frame % gap) != 0) {
- ++_video_frame;
+ if (_opt->decode_video_skip != 0 && (_video_frame_index % _opt->decode_video_skip) != 0) {
+ ++_video_frame_index;
return;
}
-#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.");
+ if (_film->dcp_trim_start() > _video_frame_index || (_film->length().get() - _film->dcp_trim_end()) < _video_frame_index) {
+ ++_video_frame_index;
+ return;
}
-#elif LIBAVFILTER_VERSION_MAJOR == 2 && LIBAVFILTER_VERSION_MINOR == 15
+ shared_ptr<FilterGraph> graph;
- 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.");
+ list<shared_ptr<FilterGraph> >::iterator i = _filter_graphs.begin();
+ while (i != _filter_graphs.end() && !(*i)->can_process (Size (frame->width, frame->height), (AVPixelFormat) frame->format)) {
+ ++i;
}
-#else
-
- if (av_buffersrc_write_frame (_buffer_src_context, frame) < 0) {
- throw DecodeError ("could not push buffer into filter chain.");
+ if (i == _filter_graphs.end ()) {
+ graph.reset (new FilterGraph (_film, this, _opt->apply_crop, Size (frame->width, frame->height), (AVPixelFormat) frame->format));
+ _filter_graphs.push_back (graph);
+ _film->log()->log (String::compose ("New graph for %1x%2, pixel format %3", frame->width, frame->height, frame->format));
+ } else {
+ graph = *i;
}
-#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
+ list<shared_ptr<Image> > images = graph->process (frame);
- AVFilterBufferRef* filter_buffer;
- if (av_buffersink_get_buffer_ref (_buffer_sink_context, &filter_buffer, 0) < 0) {
- filter_buffer = 0;
+ for (list<shared_ptr<Image> >::iterator i = images.begin(); i != images.end(); ++i) {
+ shared_ptr<Subtitle> sub;
+ if (_timed_subtitle && _timed_subtitle->displayed_at (double (video_frame_index()) / _film->frames_per_second())) {
+ sub = _timed_subtitle->subtitle ();
}
-
-#endif
- if (filter_buffer) {
- /* This takes ownership of filter_buffer */
- shared_ptr<Image> image (new FilterBufferImage ((PixelFormat) frame->format, filter_buffer));
-
- if (_opt->black_after > 0 && _video_frame > _opt->black_after) {
- image->make_black ();
- }
-
- shared_ptr<Subtitle> sub;
- if (_timed_subtitle && _timed_subtitle->displayed_at (double (last_video_frame()) / _film->frames_per_second())) {
- sub = _timed_subtitle->subtitle ();
- }
-
- TIMING ("Decoder emits %1", _video_frame);
- Video (image, _video_frame, sub);
- ++_video_frame;
- }
+ TIMING ("Decoder emits %1", _video_frame_index);
+ Video (*i, _video_frame_index, sub);
+ ++_video_frame_index;
+ _last_image = *i;
+ _last_subtitle = sub;
}
}
-
-/** Set up a video filtering chain to include cropping and any filters that are specified
- * by the Film.
- */
void
-Decoder::setup_video_filters ()
+Decoder::repeat_last_video ()
{
- stringstream fs;
- Size size_after_crop;
-
- if (_opt->apply_crop) {
- size_after_crop = _film->cropped_size (native_size ());
- fs << crop_string (Position (_film->crop().left, _film->crop().top), size_after_crop);
- } else {
- size_after_crop = native_size ();
- fs << crop_string (Position (0, 0), size_after_crop);
- }
-
- string filters = Filter::ffmpeg_strings (_film->filters()).first;
- if (!filters.empty ()) {
- filters += ",";
- }
-
- filters += fs.str ();
-
- avfilter_register_all ();
-
- AVFilterGraph* graph = avfilter_graph_alloc();
- if (graph == 0) {
- throw DecodeError ("Could not create filter graph.");
- }
-
- AVFilter* buffer_src = avfilter_get_by_name("buffer");
- if (buffer_src == 0) {
- throw DecodeError ("Could not find buffer src filter");
+ if (!_last_image) {
+ _last_image.reset (new CompactImage (pixel_format(), native_size()));
+ _last_image->make_black ();
}
-
- AVFilter* buffer_sink = get_sink ();
-
- stringstream a;
- a << native_size().width << ":"
- << native_size().height << ":"
- << pixel_format() << ":"
- << time_base_numerator() << ":"
- << time_base_denominator() << ":"
- << sample_aspect_ratio_numerator() << ":"
- << 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");
- }
-
- AVBufferSinkParams* sink_params = av_buffersink_params_alloc ();
- PixelFormat* pixel_fmts = new PixelFormat[2];
- 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, "out", 0, sink_params, graph) < 0) {
- throw DecodeError ("could not create buffer sink.");
- }
-
- AVFilterInOut* outputs = avfilter_inout_alloc ();
- outputs->name = av_strdup("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->filter_ctx = _buffer_sink_context;
- inputs->pad_idx = 0;
- inputs->next = 0;
-
- _log->log ("Using filter chain `" + filters + "'");
-
-#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.");
- }
-#endif
- if (avfilter_graph_config (graph, 0) < 0) {
- throw DecodeError ("could not configure filter graph.");
- }
-
- /* XXX: leaking `inputs' / `outputs' ? */
+ Video (_last_image, _video_frame_index, _last_subtitle);
+ ++_video_frame_index;
}
void
projects / dcpomatic.git / blobdiff