X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fffmpeg_examiner.cc;h=3fb9a53e4618f49e6f4aedb82780e9f10de541b3;hb=f5980767b7d1d9b39186dd13f12b9d8297a87aef;hp=dacc652bb73b273a5781b8017f95b40a1e8b7aac;hpb=54d17e98a597334bf1ba2615e3eb6191088f606f;p=dcpomatic.git diff --git a/src/lib/ffmpeg_examiner.cc b/src/lib/ffmpeg_examiner.cc index dacc652bb..3fb9a53e4 100644 --- a/src/lib/ffmpeg_examiner.cc +++ b/src/lib/ffmpeg_examiner.cc @@ -1,19 +1,20 @@ /* Copyright (C) 2013-2015 Carl Hetherington - 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 . */ @@ -22,6 +23,8 @@ extern "C" { #include #include #include +#include +#include } #include "ffmpeg_examiner.h" #include "ffmpeg_content.h" @@ -29,7 +32,6 @@ extern "C" { #include "ffmpeg_audio_stream.h" #include "ffmpeg_subtitle_stream.h" #include "util.h" -#include "safe_stringstream.h" #include #include @@ -40,6 +42,7 @@ using std::cout; 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 c, shared_ptr job) @@ -61,9 +64,20 @@ FFmpegExaminer::FFmpegExaminer (shared_ptr c, shared_ptrcodec->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 ( - 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 + ) ) ); @@ -72,28 +86,21 @@ FFmpegExaminer::FFmpegExaminer (shared_ptr c, shared_ptrduration == 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 (); @@ -113,7 +120,7 @@ FFmpegExaminer::FFmpegExaminer (shared_ptr c, shared_ptrstreams[_packet.stream_index]->codec; - if (_packet.stream_index == _video_stream) { + if (_video_stream && _packet.stream_index == _video_stream.get()) { video_packet (context); } @@ -128,57 +135,51 @@ FFmpegExaminer::FFmpegExaminer (shared_ptr c, shared_ptruses_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 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; } @@ -186,11 +187,11 @@ FFmpegExaminer::video_packet (AVCodecContext* context) 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 ()); } } @@ -209,47 +210,6 @@ FFmpegExaminer::audio_packet (AVCodecContext* context, shared_ptr 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 (); - } 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); - } - } - avsubtitle_free (&sub); - } -} - optional FFmpegExaminer::frame_time (AVStream* s) const { @@ -266,11 +226,8 @@ FFmpegExaminer::frame_time (AVStream* s) const optional 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 @@ -289,7 +246,8 @@ FFmpegExaminer::video_length () const optional 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 (); @@ -297,63 +255,51 @@ FFmpegExaminer::sample_aspect_ratio () const 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 FFmpegExaminer::bits_per_pixel () const { - return av_get_bits_per_pixel (av_pix_fmt_desc_get (video_codec_context()->pix_fmt)); + if (video_codec_context()->pix_fmt == -1) { + return optional(); + } + + AVPixFmtDescriptor const * d = av_pix_fmt_desc_get (video_codec_context()->pix_fmt); + DCPOMATIC_ASSERT (d); + return av_get_bits_per_pixel (d); } bool @@ -394,8 +340,6 @@ FFmpegExaminer::yuv () const 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: @@ -438,3 +382,22 @@ FFmpegExaminer::yuv () const return false; } } + +bool +FFmpegExaminer::has_video () const +{ + return static_cast (_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; + } +}