using boost::shared_ptr;
using boost::optional;
using boost::dynamic_pointer_cast;
+using libdcp::Size;
-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)
+FFmpegDecoder::FFmpegDecoder (shared_ptr<Film> f, DecodeOptions o)
+ : Decoder (f, o)
+ , VideoDecoder (f, o)
+ , AudioDecoder (f, o)
, _format_context (0)
, _video_stream (-1)
, _frame (0)
setup_video ();
setup_audio ();
setup_subtitle ();
+
+ if (!o.video_sync) {
+ _first_video = 0;
+ }
}
FFmpegDecoder::~FFmpegDecoder ()
void
FFmpegDecoder::setup_general ()
{
- int r;
-
av_register_all ();
- if ((r = avformat_open_input (&_format_context, _film->content_path().c_str(), 0, 0)) != 0) {
+ if (avformat_open_input (&_format_context, _film->content_path().c_str(), 0, 0) < 0) {
throw OpenFileError (_film->content_path ());
}
if (s->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
_video_stream = i;
} else if (s->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
+
+ /* 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 (
shared_ptr<SubtitleStream> (
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 (ffa->channels());
- }
}
void
filter_and_emit_video (_frame);
}
- if (_audio_stream && _opt->decode_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
avcodec_get_frame_defaults (_frame);
shared_ptr<FFmpegAudioStream> ffa = dynamic_pointer_cast<FFmpegAudioStream> (_audio_stream);
-
+
if (_packet.stream_index == _video_stream) {
int frame_finished;
_film->log()->log (String::compose ("Used only %1 bytes of %2 in packet", r, _packet.size));
}
- /* Where we are in the output, in seconds */
- double const out_pts_seconds = video_frame() / frames_per_second();
-
- /* Where we are in the source, in seconds */
- 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;
- }
-
- /* Difference between where we are and where we should be */
- double const delta = source_pts_seconds - _first_video.get() - out_pts_seconds;
- double const one_frame = 1 / frames_per_second();
-
- /* Insert frames if required to get out_pts_seconds up to pts_seconds */
- if (delta > one_frame) {
- int const extra = rint (delta / one_frame);
- for (int i = 0; i < extra; ++i) {
- repeat_last_video ();
- _film->log()->log (
- String::compose (
- "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 */
- filter_and_emit_video (_frame);
+ if (_opt.video_sync) {
+ out_with_sync ();
} else {
- /* Otherwise we are omitting a frame to keep things right */
- _film->log()->log (String::compose ("Frame removed at %1s", out_pts_seconds));
+ filter_and_emit_video (_frame);
}
}
- } else if (ffa && _packet.stream_index == ffa->id() && _opt->decode_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) {
}
}
- } else if (_subtitle_stream && _packet.stream_index == _subtitle_stream->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;
if (sub.num_rects > 0) {
shared_ptr<TimedSubtitle> ts;
try {
- emit_subtitle (shared_ptr<TimedSubtitle> (new TimedSubtitle (sub, _first_video.get())));
+ emit_subtitle (shared_ptr<TimedSubtitle> (new TimedSubtitle (sub)));
} catch (...) {
/* some problem with the subtitle; we probably didn't understand it */
}
switch (audio_sample_format()) {
case AV_SAMPLE_FMT_S16:
{
- int16_t* p = (int16_t *) data;
+ int16_t* p = reinterpret_cast<int16_t *> (data);
int sample = 0;
int channel = 0;
for (int i = 0; i < total_samples; ++i) {
}
break;
+ case AV_SAMPLE_FMT_S16P:
+ {
+ int16_t* p = reinterpret_cast<int16_t *> (data);
+ for (int i = 0; i < _film->audio_channels(); ++i) {
+ for (int j = 0; j < frames; ++j) {
+ audio->data(i)[j] = static_cast<float>(*p++) / (1 << 15);
+ }
+ }
+ }
+ break;
+
case AV_SAMPLE_FMT_S32:
{
- int32_t* p = (int32_t *) data;
+ int32_t* p = reinterpret_cast<int32_t *> (data);
int sample = 0;
int channel = 0;
for (int i = 0; i < total_samples; ++i) {
- audio->data(channel)[sample] = float(*p++) / (1 << 31);
+ audio->data(channel)[sample] = static_cast<float>(*p++) / (1 << 31);
++channel;
if (channel == _film->audio_channels()) {
}
}
}
+ break;
+
+ case AV_SAMPLE_FMT_FLT:
+ {
+ float* p = reinterpret_cast<float*> (data);
+ int sample = 0;
+ int channel = 0;
+ for (int i = 0; i < total_samples; ++i) {
+ audio->data(channel)[sample] = *p++;
+ ++channel;
+ if (channel == _film->audio_channels()) {
+ channel = 0;
+ ++sample;
+ }
+ }
+ }
+ break;
+
case AV_SAMPLE_FMT_FLTP:
{
float* p = reinterpret_cast<float*> (data);
break;
default:
- assert (false);
+ throw DecodeError (String::compose ("Unrecognised audio sample format (%1)", static_cast<int> (audio_sample_format())));
}
return audio;
return _audio_codec_context->sample_fmt;
}
-Size
+libdcp::Size
FFmpegDecoder::native_size () const
{
- return Size (_video_codec_context->width, _video_codec_context->height);
+ return libdcp::Size (_video_codec_context->width, _video_codec_context->height);
}
PixelFormat
{
VideoDecoder::set_subtitle_stream (s);
setup_subtitle ();
+ OutputChanged ();
}
void
FFmpegDecoder::filter_and_emit_video (AVFrame* frame)
{
+ boost::mutex::scoped_lock lm (_filter_graphs_mutex);
+
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)) {
+ while (i != _filter_graphs.end() && !(*i)->can_process (libdcp::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));
+ graph.reset (new FilterGraph (_film, this, libdcp::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 {
list<shared_ptr<Image> > images = graph->process (frame);
for (list<shared_ptr<Image> >::iterator i = images.begin(); i != images.end(); ++i) {
- emit_video (*i);
+ emit_video (*i, frame_time ());
}
}
+bool
+FFmpegDecoder::seek (double p)
+{
+ return do_seek (p, false);
+}
+
+bool
+FFmpegDecoder::seek_to_last ()
+{
+ /* This AVSEEK_FLAG_BACKWARD in do_seek is a bit of a hack; without it, if we ask for a seek to the same place as last time
+ (used when we change decoder parameters and want to re-fetch the frame) we end up going forwards rather than
+ staying in the same place.
+ */
+ return do_seek (last_source_time(), true);
+}
+
+bool
+FFmpegDecoder::do_seek (double p, bool backwards)
+{
+ int64_t const vt = p / av_q2d (_format_context->streams[_video_stream]->time_base);
+
+ int const r = av_seek_frame (_format_context, _video_stream, vt, backwards ? AVSEEK_FLAG_BACKWARD : 0);
+
+ avcodec_flush_buffers (_video_codec_context);
+ if (_subtitle_codec_context) {
+ avcodec_flush_buffers (_subtitle_codec_context);
+ }
+
+ return r < 0;
+}
+
shared_ptr<FFmpegAudioStream>
FFmpegAudioStream::create (string t, optional<int> v)
{
return String::compose ("ffmpeg %1 %2 %3 %4", _id, _sample_rate, _channel_layout, _name);
}
+void
+FFmpegDecoder::out_with_sync ()
+{
+ /* Where we are in the output, in seconds */
+ double const out_pts_seconds = video_frame() / frames_per_second();
+
+ /* Where we are in the source, in seconds */
+ 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;
+ }
+
+ /* Difference between where we are and where we should be */
+ double const delta = source_pts_seconds - _first_video.get() - out_pts_seconds;
+ double const one_frame = 1 / frames_per_second();
+
+ /* Insert frames if required to get out_pts_seconds up to pts_seconds */
+ if (delta > one_frame) {
+ int const extra = rint (delta / one_frame);
+ for (int i = 0; i < extra; ++i) {
+ repeat_last_video ();
+ _film->log()->log (
+ String::compose (
+ "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 */
+ 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));
+ }
+}
+
+void
+FFmpegDecoder::film_changed (Film::Property p)
+{
+ switch (p) {
+ case Film::CROP:
+ case Film::FILTERS:
+ {
+ boost::mutex::scoped_lock lm (_filter_graphs_mutex);
+ _filter_graphs.clear ();
+ }
+ OutputChanged ();
+ break;
+
+ default:
+ break;
+ }
+}
+
/** @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();
}
+
+double
+FFmpegDecoder::frame_time () const
+{
+ return av_frame_get_best_effort_timestamp(_frame) * av_q2d (_format_context->streams[_video_stream]->time_base);
+}
+
projects / dcpomatic.git / blobdiff