#include "util.h"
#include "log.h"
#include "ffmpeg_decoder.h"
+#include "filter_graph.h"
#include "subtitle.h"
using std::cout;
using std::string;
using std::vector;
using std::stringstream;
+using std::list;
using boost::shared_ptr;
using boost::optional;
+using boost::dynamic_pointer_cast;
FFmpegDecoder::FFmpegDecoder (shared_ptr<Film> f, shared_ptr<const Options> o, Job* j)
: Decoder (f, o, j)
+ , VideoDecoder (f, o, j)
+ , AudioDecoder (f, o, j)
, _format_context (0)
, _video_stream (-1)
, _frame (0)
if (s->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
_video_stream = i;
} else if (s->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
- _audio_streams.push_back (AudioStream (stream_name (s), i, s->codec->sample_rate, s->codec->channel_layout));
+
+ /* This is a hack; sometimes it seems that _audio_codec_context->channel_layout isn't set up,
+ so bodge it here. No idea why we should have to do this.
+ */
+
+ if (s->codec->channel_layout == 0) {
+ s->codec->channel_layout = av_get_default_channel_layout (s->codec->channels);
+ }
+
+ _audio_streams.push_back (
+ shared_ptr<AudioStream> (
+ new FFmpegAudioStream (stream_name (s), i, s->codec->sample_rate, s->codec->channel_layout)
+ )
+ );
+
} else if (s->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
- _subtitle_streams.push_back (SubtitleStream (stream_name (s), i));
+ _subtitle_streams.push_back (
+ shared_ptr<SubtitleStream> (
+ new SubtitleStream (stream_name (s), i)
+ )
+ );
}
}
throw DecodeError ("could not find video decoder");
}
- /* I think this prevents problems with green hash on decodes and
- "changing frame properties on the fly is not supported by all filters"
- messages with some content. Although I'm not sure; needs checking.
- */
- AVDictionary* opts = 0;
- av_dict_set (&opts, "threads", "1", 0);
-
- if (avcodec_open2 (_video_codec_context, _video_codec, &opts) < 0) {
+ if (avcodec_open2 (_video_codec_context, _video_codec, 0) < 0) {
throw DecodeError ("could not open video decoder");
}
}
if (!_audio_stream) {
return;
}
+
+ shared_ptr<FFmpegAudioStream> ffa = dynamic_pointer_cast<FFmpegAudioStream> (_audio_stream);
+ assert (ffa);
- _audio_codec_context = _format_context->streams[_audio_stream.get().id()]->codec;
+ _audio_codec_context = _format_context->streams[ffa->id()]->codec;
_audio_codec = avcodec_find_decoder (_audio_codec_context->codec_id);
if (_audio_codec == 0) {
if (avcodec_open2 (_audio_codec_context, _audio_codec, 0) < 0) {
throw DecodeError ("could not open audio decoder");
}
-
- /* This is a hack; sometimes it seems that _audio_codec_context->channel_layout isn't set up,
- so bodge it here. No idea why we should have to do this.
- */
-
- if (_audio_codec_context->channel_layout == 0) {
- _audio_codec_context->channel_layout = av_get_default_channel_layout (_audio_stream.get().channels());
- }
}
void
return;
}
- _subtitle_codec_context = _format_context->streams[_subtitle_stream.get().id()]->codec;
+ _subtitle_codec_context = _format_context->streams[_subtitle_stream->id()]->codec;
_subtitle_codec = avcodec_find_decoder (_subtitle_codec_context->codec_id);
if (_subtitle_codec == 0) {
int frame_finished;
while (avcodec_decode_video2 (_video_codec_context, _frame, &frame_finished, &_packet) >= 0 && frame_finished) {
- process_video (_frame);
+ filter_and_emit_video (_frame);
}
- if (_audio_stream && _opt->decode_audio && _film->use_content_audio()) {
+ if (_audio_stream && _opt->decode_audio) {
while (avcodec_decode_audio4 (_audio_codec_context, _frame, &frame_finished, &_packet) >= 0 && frame_finished) {
int const data_size = av_samples_get_buffer_size (
0, _audio_codec_context->channels, _frame->nb_samples, audio_sample_format (), 1
);
assert (_audio_codec_context->channels == _film->audio_channels());
- process_audio (deinterleave_audio (_frame->data[0], data_size));
+ Audio (deinterleave_audio (_frame->data[0], data_size));
}
}
}
avcodec_get_frame_defaults (_frame);
+
+ shared_ptr<FFmpegAudioStream> ffa = dynamic_pointer_cast<FFmpegAudioStream> (_audio_stream);
if (_packet.stream_index == _video_stream) {
double const source_pts_seconds = av_q2d (_format_context->streams[_packet.stream_index]->time_base)
* av_frame_get_best_effort_timestamp(_frame);
+ _film->log()->log (
+ String::compose ("Source video frame ready; source at %1, output at %2", source_pts_seconds, out_pts_seconds),
+ Log::VERBOSE
+ );
+
if (!_first_video) {
_first_video = source_pts_seconds;
}
repeat_last_video ();
_film->log()->log (
String::compose (
- "Extra frame inserted at %1s; source frame %2, source PTS %3",
- out_pts_seconds, video_frame(), source_pts_seconds
+ "Extra video frame inserted at %1s; source frame %2, source PTS %3 (at %4 fps)",
+ out_pts_seconds, video_frame(), source_pts_seconds, frames_per_second()
)
);
}
if (delta > -one_frame) {
/* Process this frame */
- process_video (_frame);
+ filter_and_emit_video (_frame);
} else {
/* Otherwise we are omitting a frame to keep things right */
_film->log()->log (String::compose ("Frame removed at %1s", out_pts_seconds));
}
}
- } else if (_audio_stream && _packet.stream_index == _audio_stream.get().id() && _opt->decode_audio && _film->use_content_audio()) {
+ } else if (ffa && _packet.stream_index == ffa->id() && _opt->decode_audio) {
int frame_finished;
if (avcodec_decode_audio4 (_audio_codec_context, _frame, &frame_finished, &_packet) >= 0 && frame_finished) {
*/
/* frames of silence that we must push */
- int const s = rint ((_first_audio.get() - _first_video.get()) * _audio_stream.get().sample_rate ());
+ int const s = rint ((_first_audio.get() - _first_video.get()) * ffa->sample_rate ());
_film->log()->log (
String::compose (
- "First video at %1, first audio at %2, pushing %3 frames of silence for %4 channels (%5 bytes per sample)",
- _first_video.get(), _first_audio.get(), s, _audio_stream.get().channels(), bytes_per_audio_sample()
+ "First video at %1, first audio at %2, pushing %3 audio frames of silence for %4 channels (%5 bytes per sample)",
+ _first_video.get(), _first_audio.get(), s, ffa->channels(), bytes_per_audio_sample()
)
);
if (s) {
- shared_ptr<AudioBuffers> audio (new AudioBuffers (_audio_stream.get().channels(), s));
+ shared_ptr<AudioBuffers> audio (new AudioBuffers (ffa->channels(), s));
audio->make_silent ();
- process_audio (audio);
+ Audio (audio);
}
}
);
assert (_audio_codec_context->channels == _film->audio_channels());
- process_audio (deinterleave_audio (_frame->data[0], data_size));
+ Audio (deinterleave_audio (_frame->data[0], data_size));
}
}
- } else if (_subtitle_stream && _packet.stream_index == _subtitle_stream.get().id() && _opt->decode_subtitles && _first_video) {
+ } else if (_subtitle_stream && _packet.stream_index == _subtitle_stream->id() && _opt->decode_subtitles && _first_video) {
int got_subtitle;
AVSubtitle sub;
indicate that the previous subtitle should stop.
*/
if (sub.num_rects > 0) {
- process_subtitle (shared_ptr<TimedSubtitle> (new TimedSubtitle (sub, _first_video.get())));
+ shared_ptr<TimedSubtitle> ts;
+ try {
+ emit_subtitle (shared_ptr<TimedSubtitle> (new TimedSubtitle (sub, _first_video.get())));
+ } catch (...) {
+ /* some problem with the subtitle; we probably didn't understand it */
+ }
} else {
- process_subtitle (shared_ptr<TimedSubtitle> ());
+ emit_subtitle (shared_ptr<TimedSubtitle> ());
}
avsubtitle_free (&sub);
}
{
assert (_film->audio_channels());
assert (bytes_per_audio_sample());
+
+ shared_ptr<FFmpegAudioStream> ffa = dynamic_pointer_cast<FFmpegAudioStream> (_audio_stream);
+ assert (ffa);
/* Deinterleave and convert to float */
- assert ((size % (bytes_per_audio_sample() * _audio_stream.get().channels())) == 0);
+ assert ((size % (bytes_per_audio_sample() * ffa->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 (_audio_stream.get().channels(), frames));
+ shared_ptr<AudioBuffers> audio (new AudioBuffers (ffa->channels(), frames));
switch (audio_sample_format()) {
case AV_SAMPLE_FMT_S16:
}
void
-FFmpegDecoder::set_audio_stream (
optional<AudioStream> s)
+FFmpegDecoder::set_audio_stream (
shared_ptr<AudioStream> s)
{
- Decoder::set_audio_stream (s);
+ AudioDecoder::set_audio_stream (s);
setup_audio ();
}
void
-FFmpegDecoder::set_subtitle_stream (optional<SubtitleStream> s)
+FFmpegDecoder::set_subtitle_stream (shared_ptr<SubtitleStream> s)
{
- Decoder::set_subtitle_stream (s);
+ VideoDecoder::set_subtitle_stream (s);
setup_subtitle ();
}
+
+void
+FFmpegDecoder::filter_and_emit_video (AVFrame* frame)
+{
+ shared_ptr<FilterGraph> graph;
+
+ 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;
+ }
+
+ 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;
+ }
+
+ list<shared_ptr<Image> > images = graph->process (frame);
+
+ for (list<shared_ptr<Image> >::iterator i = images.begin(); i != images.end(); ++i) {
+ emit_video (*i);
+ }
+}
+
+shared_ptr<FFmpegAudioStream>
+FFmpegAudioStream::create (string t, optional<int> v)
+{
+ if (!v) {
+ /* version < 1; no type in the string, and there's only FFmpeg streams anyway */
+ return shared_ptr<FFmpegAudioStream> (new FFmpegAudioStream (t, v));
+ }
+
+ stringstream s (t);
+ string type;
+ s >> type;
+ if (type != "ffmpeg") {
+ return shared_ptr<FFmpegAudioStream> ();
+ }
+
+ return shared_ptr<FFmpegAudioStream> (new FFmpegAudioStream (t, v));
+}
+
+FFmpegAudioStream::FFmpegAudioStream (string t, optional<int> version)
+{
+ stringstream n (t);
+
+ int name_index = 4;
+ if (!version) {
+ name_index = 2;
+ int channels;
+ n >> _id >> channels;
+ _channel_layout = av_get_default_channel_layout (channels);
+ _sample_rate = 0;
+ } else {
+ string type;
+ /* Current (marked version 1) */
+ n >> type >> _id >> _sample_rate >> _channel_layout;
+ assert (type == "ffmpeg");
+ }
+
+ for (int i = 0; i < name_index; ++i) {
+ size_t const s = t.find (' ');
+ if (s != string::npos) {
+ t = t.substr (s + 1);
+ }
+ }
+
+ _name = t;
+}
+
+string
+FFmpegAudioStream::to_string () const
+{
+ return String::compose ("ffmpeg %1 %2 %3 %4", _id, _sample_rate, _channel_layout, _name);
+}
+
+/** @return Length (in video frames) according to our content's header */
+SourceFrame
+FFmpegDecoder::length () const
+{
+ return (double(_format_context->duration) / AV_TIME_BASE) * frames_per_second();
+}
projects / dcpomatic.git / blobdiff