/*
- Copyright (C) 2013-2014 Carl Hetherington <cth@carlh.net>
+ 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/>.
*/
extern "C" {
#include <libavcodec/avcodec.h>
#include <libavformat/avformat.h>
+#include <libavutil/pixfmt.h>
+#include <libavutil/pixdesc.h>
}
#include "ffmpeg_examiner.h"
#include "ffmpeg_content.h"
+#include "job.h"
#include "ffmpeg_audio_stream.h"
#include "ffmpeg_subtitle_stream.h"
#include "util.h"
#include "safe_stringstream.h"
+#include <boost/foreach.hpp>
+#include <iostream>
#include "i18n.h"
using boost::shared_ptr;
using boost::optional;
-FFmpegExaminer::FFmpegExaminer (shared_ptr<const FFmpegContent> c)
+/** @param job job that the examiner is operating in, or 0 */
+FFmpegExaminer::FFmpegExaminer (shared_ptr<const FFmpegContent> c, shared_ptr<Job> job)
: FFmpeg (c)
+ , _video_length (0)
+ , _need_video_length (false)
{
/* Find audio and subtitle streams */
if (s->codec->channel_layout == 0) {
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,
+ (double (_format_context->duration) / AV_TIME_BASE) * s->codec->sample_rate,
+ s->codec->channels
+ )
)
);
}
}
+ 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 = (double (_format_context->duration) / AV_TIME_BASE) * video_frame_rate().get ();
+ }
+ }
+
+ if (job) {
+ if (_need_video_length) {
+ job->sub (_("Finding length and subtitles"));
+ } else if (!_subtitle_streams.empty()) {
+ job->sub (_("Finding subtitles"));
+ } else {
+ job->sub (_("Finding length"));
+ }
+ }
+
/* Run through until we find:
* - the first video.
* - the first audio for each stream.
* where we should look for subtitles (video and audio are always present,
* so they are ok).
*/
+
+ int64_t const len = _file_group.length ();
while (true) {
int r = av_read_frame (_format_context, &_packet);
if (r < 0) {
break;
}
+ if (job) {
+ if (len > 0) {
+ job->set_progress (float (_format_context->pb->pos) / len);
+ } else {
+ job->set_progress_unknown ();
+ }
+ }
+
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);
}
-
+
+ bool got_all_audio = true;
+
for (size_t i = 0; i < _audio_streams.size(); ++i) {
if (_audio_streams[i]->uses_index (_format_context, _packet.stream_index)) {
audio_packet (context, _audio_streams[i]);
}
+ if (!_audio_streams[i]->first_audio) {
+ got_all_audio = false;
+ }
}
for (size_t i = 0; i < _subtitle_streams.size(); ++i) {
}
}
- av_free_packet (&_packet);
+ av_packet_unref (&_packet);
+
+ if (_first_video && got_all_audio && _subtitle_streams.empty ()) {
+ /* 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))
+ )
+ );
+ }
+ }
+ }
+
+ /* 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 (has_video() && video_frame_rate()) {
+ BOOST_FOREACH (shared_ptr<FFmpegSubtitleStream> i, _subtitle_streams) {
+ i->add_offset (pts_offset (_audio_streams, _first_video, video_frame_rate().get()));
+ }
}
}
void
FFmpegExaminer::video_packet (AVCodecContext* context)
{
- if (_first_video) {
+ 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) {
- _first_video = frame_time (_format_context->streams[_video_stream]);
+ if (!_first_video) {
+ _first_video = frame_time (_format_context->streams[_video_stream.get()]);
+ }
+ if (_need_video_length) {
+ _video_length = frame_time (
+ _format_context->streams[_video_stream.get()]
+ ).get_value_or (ContentTime ()).frames_round (video_frame_rate().get ());
+ }
}
}
int frame_finished;
AVSubtitle sub;
if (avcodec_decode_subtitle2 (context, &sub, &frame_finished, &_packet) >= 0 && frame_finished) {
- ContentTimePeriod const period = subtitle_period (sub);
- if (sub.num_rects == 0 && !stream->periods.empty () && stream->periods.back().to > period.from) {
- /* Finish the last subtitle */
- stream->periods.back().to = period.from;
+ string id = subtitle_id (sub);
+ FFmpegSubtitlePeriod const period = subtitle_period (sub);
+ bool const starts_image = subtitle_starts_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 (last->second->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, starts_image, period.from);
+ }
} else if (sub.num_rects == 1) {
- stream->periods.push_back (period);
+ if (period.to) {
+ if (starts_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, starts_image, period.from);
+ }
+ }
+
+ for (unsigned int i = 0; i < sub.num_rects; ++i) {
+ if (sub.rects[i]->type == SUBTITLE_BITMAP) {
+#ifdef DCPOMATIC_HAVE_AVSUBTITLERECT_PICT
+ 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);
+ }
+#else
+ uint32_t* palette = (uint32_t *) sub.rects[i]->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);
+ }
+#endif
+ }
}
+
+ avsubtitle_free (&sub);
}
}
FFmpegExaminer::frame_time (AVStream* s) const
{
optional<ContentTime> t;
-
+
int64_t const bet = av_frame_get_best_effort_timestamp (_frame);
if (bet != AV_NOPTS_VALUE) {
t = ContentTime::from_seconds (bet * av_q2d (s->time_base));
return t;
}
-float
+optional<double>
FFmpegExaminer::video_frame_rate () const
{
+ DCPOMATIC_ASSERT (_video_stream);
/* 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]));
+ return av_q2d (av_stream_get_r_frame_rate (_format_context->streams[_video_stream.get()]));
}
dcp::Size
}
/** @return Length according to our content's header */
-ContentTime
+Frame
FFmpegExaminer::video_length () const
{
- ContentTime const length = ContentTime::from_seconds (double (_format_context->duration) / AV_TIME_BASE);
- return ContentTime (max (ContentTime::Type (1), length.get ()));
+ return max (Frame (1), _video_length);
}
-optional<float>
+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<float> ();
+ return optional<double> ();
}
- return float (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 ();
+ return double (sar.num) / sar.den;
}
string
if (lang) {
n << lang->value;
}
-
+
AVDictionaryEntry const * title = av_dict_get (s->metadata, "title", 0, 0);
if (title) {
if (!n.str().empty()) {
return n.str ();
}
+
+int
+FFmpegExaminer::bits_per_pixel () const
+{
+ if (video_codec_context()->pix_fmt == -1) {
+ throw DecodeError (_("Could not find pixel format for video."));
+ }
+
+ AVPixFmtDescriptor const * d = av_pix_fmt_desc_get (video_codec_context()->pix_fmt);
+ DCPOMATIC_ASSERT (d);
+ return av_get_bits_per_pixel (d);
+}
+
+bool
+FFmpegExaminer::yuv () const
+{
+ switch (video_codec_context()->pix_fmt) {
+ case AV_PIX_FMT_YUV420P:
+ case AV_PIX_FMT_YUYV422:
+ case AV_PIX_FMT_YUV422P:
+ case AV_PIX_FMT_YUV444P:
+ case AV_PIX_FMT_YUV410P:
+ case AV_PIX_FMT_YUV411P:
+ case AV_PIX_FMT_YUVJ420P:
+ case AV_PIX_FMT_YUVJ422P:
+ case AV_PIX_FMT_YUVJ444P:
+ case AV_PIX_FMT_UYVY422:
+ case AV_PIX_FMT_UYYVYY411:
+ case AV_PIX_FMT_NV12:
+ case AV_PIX_FMT_NV21:
+ case AV_PIX_FMT_YUV440P:
+ case AV_PIX_FMT_YUVJ440P:
+ case AV_PIX_FMT_YUVA420P:
+ case AV_PIX_FMT_YUV420P16LE:
+ case AV_PIX_FMT_YUV420P16BE:
+ case AV_PIX_FMT_YUV422P16LE:
+ case AV_PIX_FMT_YUV422P16BE:
+ case AV_PIX_FMT_YUV444P16LE:
+ case AV_PIX_FMT_YUV444P16BE:
+ case AV_PIX_FMT_YUV420P9BE:
+ case AV_PIX_FMT_YUV420P9LE:
+ case AV_PIX_FMT_YUV420P10BE:
+ case AV_PIX_FMT_YUV420P10LE:
+ case AV_PIX_FMT_YUV422P10BE:
+ case AV_PIX_FMT_YUV422P10LE:
+ case AV_PIX_FMT_YUV444P9BE:
+ case AV_PIX_FMT_YUV444P9LE:
+ case AV_PIX_FMT_YUV444P10BE:
+ case AV_PIX_FMT_YUV444P10LE:
+ case AV_PIX_FMT_YUV422P9BE:
+ case AV_PIX_FMT_YUV422P9LE:
+ case AV_PIX_FMT_YUVA420P9BE:
+ case AV_PIX_FMT_YUVA420P9LE:
+ case AV_PIX_FMT_YUVA422P9BE:
+ case AV_PIX_FMT_YUVA422P9LE:
+ case AV_PIX_FMT_YUVA444P9BE:
+ case AV_PIX_FMT_YUVA444P9LE:
+ case AV_PIX_FMT_YUVA420P10BE:
+ case AV_PIX_FMT_YUVA420P10LE:
+ case AV_PIX_FMT_YUVA422P10BE:
+ case AV_PIX_FMT_YUVA422P10LE:
+ case AV_PIX_FMT_YUVA444P10BE:
+ case AV_PIX_FMT_YUVA444P10LE:
+ case AV_PIX_FMT_YUVA420P16BE:
+ case AV_PIX_FMT_YUVA420P16LE:
+ case AV_PIX_FMT_YUVA422P16BE:
+ case AV_PIX_FMT_YUVA422P16LE:
+ case AV_PIX_FMT_YUVA444P16BE:
+ case AV_PIX_FMT_YUVA444P16LE:
+ case AV_PIX_FMT_NV16:
+ case AV_PIX_FMT_NV20LE:
+ case AV_PIX_FMT_NV20BE:
+ case AV_PIX_FMT_YVYU422:
+ case AV_PIX_FMT_YUVA444P:
+ case AV_PIX_FMT_YUVA422P:
+ case AV_PIX_FMT_YUV420P12BE:
+ case AV_PIX_FMT_YUV420P12LE:
+ case AV_PIX_FMT_YUV420P14BE:
+ case AV_PIX_FMT_YUV420P14LE:
+ case AV_PIX_FMT_YUV422P12BE:
+ case AV_PIX_FMT_YUV422P12LE:
+ case AV_PIX_FMT_YUV422P14BE:
+ case AV_PIX_FMT_YUV422P14LE:
+ case AV_PIX_FMT_YUV444P12BE:
+ case AV_PIX_FMT_YUV444P12LE:
+ case AV_PIX_FMT_YUV444P14BE:
+ case AV_PIX_FMT_YUV444P14LE:
+ case AV_PIX_FMT_YUVJ411P:
+ return true;
+ default:
+ return false;
+ }
+}
+
+bool
+FFmpegExaminer::has_video () const
+{
+ return static_cast<bool> (_video_stream);
+}
projects / dcpomatic.git / blobdiff