X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fffmpeg_examiner.cc;h=f03b744a160a3a13170d32f164b1d19aa6046d7f;hb=3828baf56467224f5d44049bf1e7a7ed11f43a05;hp=64866047863afc9de6b9f9893609d84958e4c723;hpb=0f3c2864599f9e5a5ec001266b4aefb0205d1e1f;p=dcpomatic.git

diff --git a/src/lib/ffmpeg_examiner.cc b/src/lib/ffmpeg_examiner.cc
index 648660478..f03b744a1 100644
--- a/src/lib/ffmpeg_examiner.cc
+++ b/src/lib/ffmpeg_examiner.cc
@@ -1,19 +1,20 @@
 /*
     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/>.
 
 */
 
@@ -61,9 +62,17 @@ FFmpegExaminer::FFmpegExaminer (shared_ptr<const FFmpegContent> c, shared_ptr<Jo
 				s->codec->channel_layout = av_get_default_channel_layout (s->codec->channels);
 			}
 
+			DCPOMATIC_ASSERT (_format_context->duration != AV_NOPTS_VALUE);
+
 			_audio_streams.push_back (
 				shared_ptr<FFmpegAudioStream> (
-					new FFmpegAudioStream (audio_stream_name (s), s->id, s->codec->sample_rate, s->codec->channels)
+					new FFmpegAudioStream (
+						audio_stream_name (s),
+						s->id,
+						s->codec->sample_rate,
+						(double (_format_context->duration) / AV_TIME_BASE) * s->codec->sample_rate,
+						s->codec->channels
+						)
 					)
 				);
 
@@ -72,10 +81,12 @@ FFmpegExaminer::FFmpegExaminer (shared_ptr<const FFmpegContent> c, shared_ptr<Jo
 		}
 	}
 
-	/* 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 = (double (_format_context->duration) / AV_TIME_BASE) * video_frame_rate().get ();
+		}
 	}
 
 	if (job) {
@@ -113,7 +124,7 @@ FFmpegExaminer::FFmpegExaminer (shared_ptr<const FFmpegContent> c, shared_ptr<Jo
 
 		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);
 		}
 
@@ -169,7 +180,7 @@ FFmpegExaminer::FFmpegExaminer (shared_ptr<const FFmpegContent> c, shared_ptr<Jo
 	   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()) {
+	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()));
 		}
@@ -179,6 +190,8 @@ FFmpegExaminer::FFmpegExaminer (shared_ptr<const FFmpegContent> c, shared_ptr<Jo
 void
 FFmpegExaminer::video_packet (AVCodecContext* context)
 {
+	DCPOMATIC_ASSERT (_video_stream);
+
 	if (_first_video && !_need_video_length) {
 		return;
 	}
@@ -186,11 +199,11 @@ 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 ());
 		}
 	}
@@ -249,6 +262,19 @@ FFmpegExaminer::subtitle_packet (AVCodecContext* context, shared_ptr<FFmpegSubti
 
 		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  (
@@ -260,6 +286,7 @@ FFmpegExaminer::subtitle_packet (AVCodecContext* context, shared_ptr<FFmpegSubti
 
 					stream->set_colour (rgba, rgba);
 				}
+#endif
 			}
 		}
 
@@ -283,11 +310,12 @@ FFmpegExaminer::frame_time (AVStream* s) const
 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
@@ -306,7 +334,8 @@ FFmpegExaminer::video_length () const
 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> ();
@@ -459,3 +488,9 @@ FFmpegExaminer::yuv () const
 		return false;
 	}
 }
+
+bool
+FFmpegExaminer::has_video () const
+{
+	return static_cast<bool> (_video_stream);
+}