/*
Copyright (C) 2013-2015 Carl Hetherington <cth@carlh.net>
- This program is free software; you can redistribute it and/or modify
+ This file is part of DCP-o-matic.
+
+ DCP-o-matic is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
- This program is distributed in the hope that it will be useful,
+ DCP-o-matic is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libavformat/avformat.h>
#include <libavutil/pixfmt.h>
#include <libavutil/pixdesc.h>
+#include <libavutil/eval.h>
+#include <libavutil/display.h>
}
#include "ffmpeg_examiner.h"
#include "ffmpeg_content.h"
#include "ffmpeg_audio_stream.h"
#include "ffmpeg_subtitle_stream.h"
#include "util.h"
-#include "safe_stringstream.h"
#include <boost/foreach.hpp>
#include <iostream>
using std::max;
using boost::shared_ptr;
using boost::optional;
+using namespace dcpomatic;
/** @param job job that the examiner is operating in, or 0 */
FFmpegExaminer::FFmpegExaminer (shared_ptr<const FFmpegContent> c, shared_ptr<Job> job)
s->codec->channel_layout = av_get_default_channel_layout (s->codec->channels);
}
+ DCPOMATIC_ASSERT (_format_context->duration != AV_NOPTS_VALUE);
+ DCPOMATIC_ASSERT (s->codec->codec);
+ DCPOMATIC_ASSERT (s->codec->codec->name);
+
_audio_streams.push_back (
shared_ptr<FFmpegAudioStream> (
- new FFmpegAudioStream (audio_stream_name (s), s->id, s->codec->sample_rate, s->codec->channels)
+ new FFmpegAudioStream (
+ stream_name (s),
+ s->codec->codec->name,
+ s->id,
+ s->codec->sample_rate,
+ llrint ((double (_format_context->duration) / AV_TIME_BASE) * s->codec->sample_rate),
+ s->codec->channels
+ )
)
);
}
}
- /* See if the header has duration information in it */
- _need_video_length = _format_context->duration == AV_NOPTS_VALUE;
- if (!_need_video_length) {
- _video_length = (double (_format_context->duration) / AV_TIME_BASE) * video_frame_rate().get ();
+ if (has_video ()) {
+ /* See if the header has duration information in it */
+ _need_video_length = _format_context->duration == AV_NOPTS_VALUE;
+ if (!_need_video_length) {
+ _video_length = llrint ((double (_format_context->duration) / AV_TIME_BASE) * video_frame_rate().get());
+ }
}
- if (job) {
- if (_need_video_length) {
- job->sub (_("Finding length and subtitles"));
- } else {
- job->sub (_("Finding subtitles"));
- }
+ if (job && _need_video_length) {
+ job->sub (_("Finding length"));
}
/* Run through until we find:
* - the first video.
* - the first audio for each stream.
- * - the subtitle periods for each stream.
- *
- * We have to note subtitle periods as otherwise we have no way of knowing
- * where we should look for subtitles (video and audio are always present,
- * so they are ok).
*/
int64_t const len = _file_group.length ();
AVCodecContext* context = _format_context->streams[_packet.stream_index]->codec;
- if (_packet.stream_index == _video_stream) {
+ if (_video_stream && _packet.stream_index == _video_stream.get()) {
video_packet (context);
}
}
}
- for (size_t i = 0; i < _subtitle_streams.size(); ++i) {
- if (_subtitle_streams[i]->uses_index (_format_context, _packet.stream_index)) {
- subtitle_packet (context, _subtitle_streams[i]);
- }
- }
-
- av_free_packet (&_packet);
+ av_packet_unref (&_packet);
- if (_first_video && got_all_audio && _subtitle_streams.empty ()) {
+ if (_first_video && got_all_audio) {
/* All done */
break;
}
}
- /* Finish off any hanging subtitles at the end */
- for (LastSubtitleMap::const_iterator i = _last_subtitle_start.begin(); i != _last_subtitle_start.end(); ++i) {
- if (i->second) {
- if (i->second->image) {
- i->first->add_image_subtitle (
- i->second->id,
- ContentTimePeriod (
- i->second->time,
- ContentTime::from_frames (video_length(), video_frame_rate().get_value_or (24))
- )
- );
- } else {
- i->first->add_text_subtitle (
- i->second->id,
- ContentTimePeriod (
- i->second->time,
- ContentTime::from_frames (video_length(), video_frame_rate().get_value_or (24))
- )
- );
+ if (_video_stream) {
+ /* This code taken from get_rotation() in ffmpeg:cmdutils.c */
+ AVStream* stream = _format_context->streams[*_video_stream];
+ AVDictionaryEntry* rotate_tag = av_dict_get (stream->metadata, "rotate", 0, 0);
+ uint8_t* displaymatrix = av_stream_get_side_data (stream, AV_PKT_DATA_DISPLAYMATRIX, 0);
+ _rotation = 0;
+
+ if (rotate_tag && *rotate_tag->value && strcmp(rotate_tag->value, "0")) {
+ char *tail;
+ _rotation = av_strtod (rotate_tag->value, &tail);
+ if (*tail) {
+ _rotation = 0;
}
}
- }
- /* We just added subtitles to our streams without taking the PTS offset into account;
- this is because we might not know the PTS offset when the first subtitle is seen.
- Now we know the PTS offset so we can apply it to those subtitles.
- */
- if (video_frame_rate()) {
- BOOST_FOREACH (shared_ptr<FFmpegSubtitleStream> i, _subtitle_streams) {
- i->add_offset (pts_offset (_audio_streams, _first_video, video_frame_rate().get()));
+ if (displaymatrix && !_rotation) {
+ _rotation = - av_display_rotation_get ((int32_t*) displaymatrix);
}
+
+ _rotation = *_rotation - 360 * floor (*_rotation / 360 + 0.9 / 360);
+
+ DCPOMATIC_ASSERT (fabs (*_rotation - 90 * round (*_rotation / 90)) < 2);
+ }
+
+#ifdef DCPOMATIC_VARIANT_SWAROOP
+ AVDictionaryEntry* e = av_dict_get (_format_context->metadata, SWAROOP_ID_TAG, 0, 0);
+ if (e) {
+ _id = e->value;
}
+#endif
}
void
FFmpegExaminer::video_packet (AVCodecContext* context)
{
+ DCPOMATIC_ASSERT (_video_stream);
+
if (_first_video && !_need_video_length) {
return;
}
int frame_finished;
if (avcodec_decode_video2 (context, _frame, &frame_finished, &_packet) >= 0 && frame_finished) {
if (!_first_video) {
- _first_video = frame_time (_format_context->streams[_video_stream]);
+ _first_video = frame_time (_format_context->streams[_video_stream.get()]);
}
if (_need_video_length) {
_video_length = frame_time (
- _format_context->streams[_video_stream]
+ _format_context->streams[_video_stream.get()]
).get_value_or (ContentTime ()).frames_round (video_frame_rate().get ());
}
}
}
}
-void
-FFmpegExaminer::subtitle_packet (AVCodecContext* context, shared_ptr<FFmpegSubtitleStream> stream)
-{
- int frame_finished;
- AVSubtitle sub;
- if (avcodec_decode_subtitle2 (context, &sub, &frame_finished, &_packet) >= 0 && frame_finished) {
- string id = subtitle_id (sub);
- FFmpegSubtitlePeriod const period = subtitle_period (sub);
- bool const image = subtitle_is_image (sub);
-
- LastSubtitleMap::iterator last = _last_subtitle_start.find (stream);
- if (last != _last_subtitle_start.end() && last->second) {
- /* We have seen the start of a subtitle but not yet the end. Whatever this is
- finishes the previous subtitle, so add it */
- if (image) {
- stream->add_image_subtitle (last->second->id, ContentTimePeriod (last->second->time, period.from));
- } else {
- stream->add_text_subtitle (last->second->id, ContentTimePeriod (last->second->time, period.from));
- }
- if (sub.num_rects == 0) {
- /* This is a `proper' end-of-subtitle */
- _last_subtitle_start[stream] = optional<SubtitleStart> ();
- } else {
- /* This is just another subtitle, so we start again */
- _last_subtitle_start[stream] = SubtitleStart (id, image, period.from);
- }
- } else if (sub.num_rects == 1) {
- if (period.to) {
- if (image) {
- stream->add_image_subtitle (id, ContentTimePeriod (period.from, period.to.get ()));
- } else {
- stream->add_text_subtitle (id, ContentTimePeriod (period.from, period.to.get ()));
- }
- } else {
- _last_subtitle_start[stream] = SubtitleStart (id, image, period.from);
- }
- }
-
- for (unsigned int i = 0; i < sub.num_rects; ++i) {
- if (sub.rects[i]->type == SUBTITLE_BITMAP) {
- uint32_t* palette = (uint32_t *) sub.rects[i]->pict.data[1];
- for (int j = 0; j < sub.rects[i]->nb_colors; ++j) {
- RGBA rgba (
- (palette[j] & 0x00ff0000) >> 16,
- (palette[j] & 0x0000ff00) >> 8,
- (palette[j] & 0x000000ff) >> 0,
- (palette[j] & 0xff000000) >> 24
- );
-
- stream->set_colour (rgba, rgba);
- }
- }
- }
-
- avsubtitle_free (&sub);
- }
-}
-
optional<ContentTime>
FFmpegExaminer::frame_time (AVStream* s) const
{
optional<double>
FFmpegExaminer::video_frame_rate () const
{
- /* This use of r_frame_rate is debateable; there's a few different
- * frame rates in the format context, but this one seems to be the most
- * reliable.
- */
- return av_q2d (av_stream_get_r_frame_rate (_format_context->streams[_video_stream]));
+ DCPOMATIC_ASSERT (_video_stream);
+ return av_q2d(av_guess_frame_rate(_format_context, _format_context->streams[_video_stream.get()], 0));
}
dcp::Size
optional<double>
FFmpegExaminer::sample_aspect_ratio () const
{
- AVRational sar = av_guess_sample_aspect_ratio (_format_context, _format_context->streams[_video_stream], 0);
+ DCPOMATIC_ASSERT (_video_stream);
+ AVRational sar = av_guess_sample_aspect_ratio (_format_context, _format_context->streams[_video_stream.get()], 0);
if (sar.num == 0) {
/* I assume this means that we don't know */
return optional<double> ();
return double (sar.num) / sar.den;
}
-string
-FFmpegExaminer::audio_stream_name (AVStream* s) const
-{
- SafeStringStream n;
-
- n << stream_name (s);
-
- if (!n.str().empty()) {
- n << "; ";
- }
-
- n << s->codec->channels << " channels";
-
- return n.str ();
-}
-
string
FFmpegExaminer::subtitle_stream_name (AVStream* s) const
{
- SafeStringStream n;
-
- n << stream_name (s);
+ string n = stream_name (s);
- if (n.str().empty()) {
- n << _("unknown");
+ if (n.empty()) {
+ n = _("unknown");
}
- return n.str ();
+ return n;
}
string
FFmpegExaminer::stream_name (AVStream* s) const
{
- SafeStringStream n;
+ string n;
if (s->metadata) {
AVDictionaryEntry const * lang = av_dict_get (s->metadata, "language", 0, 0);
if (lang) {
- n << lang->value;
+ n = lang->value;
}
AVDictionaryEntry const * title = av_dict_get (s->metadata, "title", 0, 0);
if (title) {
- if (!n.str().empty()) {
- n << " ";
+ if (!n.empty()) {
+ n += " ";
}
- n << title->value;
+ n += title->value;
}
}
- return n.str ();
+ return n;
}
-int
+optional<int>
FFmpegExaminer::bits_per_pixel () const
{
if (video_codec_context()->pix_fmt == -1) {
- throw DecodeError (_("Could not find pixel format for video."));
+ return optional<int>();
}
AVPixFmtDescriptor const * d = av_pix_fmt_desc_get (video_codec_context()->pix_fmt);
case AV_PIX_FMT_YUV444P10LE:
case AV_PIX_FMT_YUV422P9BE:
case AV_PIX_FMT_YUV422P9LE:
- case AV_PIX_FMT_YUVA422P_LIBAV:
- case AV_PIX_FMT_YUVA444P_LIBAV:
case AV_PIX_FMT_YUVA420P9BE:
case AV_PIX_FMT_YUVA420P9LE:
case AV_PIX_FMT_YUVA422P9BE:
return false;
}
}
+
+bool
+FFmpegExaminer::has_video () const
+{
+ return static_cast<bool> (_video_stream);
+}
+
+VideoRange
+FFmpegExaminer::range () const
+{
+ switch (color_range()) {
+ case AVCOL_RANGE_MPEG:
+ case AVCOL_RANGE_UNSPECIFIED:
+ return VIDEO_RANGE_VIDEO;
+ case AVCOL_RANGE_JPEG:
+ default:
+ return VIDEO_RANGE_FULL;
+ }
+}
projects / dcpomatic.git / blobdiff