More various bits.

1 files changed, 11 insertions, 1 deletions

diff --git a/src/lib/ffmpeg_decoder.cc b/src/lib/ffmpeg_decoder.cc
index 3a185bd6a..fdc5189a6 100644
--- a/src/lib/ffmpeg_decoder.cc
+++ b/src/lib/ffmpeg_decoder.cc
@@ -61,6 +61,8 @@ using boost::optional;
 using boost::dynamic_pointer_cast;
 using libdcp::Size;
 
+boost::mutex FFmpegDecoder::_mutex;
+
 FFmpegDecoder::FFmpegDecoder (shared_ptr<const Film> f, shared_ptr<const FFmpegContent> c, bool video, bool audio, bool subtitles, bool video_sync)
 	: Decoder (f)
 	, VideoDecoder (f)
@@ -92,10 +94,12 @@ FFmpegDecoder::FFmpegDecoder (shared_ptr<const Film> f, shared_ptr<const FFmpegC
 
 FFmpegDecoder::~FFmpegDecoder ()
 {
+	boost::mutex::scoped_lock lm (_mutex);
+	
 	if (_audio_codec_context) {
 		avcodec_close (_audio_codec_context);
 	}
-	
+
 	if (_video_codec_context) {
 		avcodec_close (_video_codec_context);
 	}
@@ -160,6 +164,8 @@ FFmpegDecoder::setup_general ()
 void
 FFmpegDecoder::setup_video ()
 {
+	boost::mutex::scoped_lock lm (_mutex);
+	
 	_video_codec_context = _format_context->streams[_video_stream]->codec;
 	_video_codec = avcodec_find_decoder (_video_codec_context->codec_id);
 
@@ -175,6 +181,8 @@ FFmpegDecoder::setup_video ()
 void
 FFmpegDecoder::setup_audio ()
 {
+	boost::mutex::scoped_lock lm (_mutex);
+	
 	if (!_ffmpeg_content->audio_stream ()) {
 		return;
 	}
@@ -194,6 +202,8 @@ FFmpegDecoder::setup_audio ()
 void
 FFmpegDecoder::setup_subtitle ()
 {
+	boost::mutex::scoped_lock lm (_mutex);
+	
 	if (!_ffmpeg_content->subtitle_stream() || _ffmpeg_content->subtitle_stream()->id >= int (_format_context->nb_streams)) {
 		return;
 	}