X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fffmpeg.cc;h=f5af239b0a0eeba9445d85a98fbe97c767ae9658;hb=40b654453c2ce0b266f43c36f1b9a5d1705f983c;hp=6f66ebbc069793d6a13250e0cf8f7c2d966bd08f;hpb=85d343a420c4df1a08663c8afd3bdb73c8dfa985;p=dcpomatic.git

diff --git a/src/lib/ffmpeg.cc b/src/lib/ffmpeg.cc
index 6f66ebbc0..f5af239b0 100644
--- a/src/lib/ffmpeg.cc
+++ b/src/lib/ffmpeg.cc
@@ -26,6 +26,7 @@ extern "C" {
 #include "ffmpeg.h"
 #include "ffmpeg_content.h"
 #include "ffmpeg_audio_stream.h"
+#include "ffmpeg_subtitle_stream.h"
 #include "exceptions.h"
 #include "util.h"
 
@@ -49,8 +50,7 @@ FFmpeg::FFmpeg (boost::shared_ptr<const FFmpegContent> c)
 	, _video_stream (-1)
 {
 	setup_general ();
-	setup_video ();
-	setup_audio ();
+	setup_decoders ();
 }
 
 FFmpeg::~FFmpeg ()
@@ -58,14 +58,10 @@ FFmpeg::~FFmpeg ()
 	boost::mutex::scoped_lock lm (_mutex);
 
 	for (uint32_t i = 0; i < _format_context->nb_streams; ++i) {
-		AVCodecContext* context = _format_context->streams[i]->codec;
-		if (context->codec_type == AVMEDIA_TYPE_VIDEO || context->codec_type == AVMEDIA_TYPE_AUDIO) {
-			avcodec_close (context);
-		}
+		avcodec_close (_format_context->streams[i]->codec);
 	}
 
 	av_frame_free (&_frame);
-	
 	avformat_close_input (&_format_context);
 }
 
@@ -145,46 +141,24 @@ FFmpeg::setup_general ()
 }
 
 void
-FFmpeg::setup_video ()
-{
-	boost::mutex::scoped_lock lm (_mutex);
-
-	assert (_video_stream >= 0);
-	AVCodecContext* context = _format_context->streams[_video_stream]->codec;
-	AVCodec* codec = avcodec_find_decoder (context->codec_id);
-
-	if (codec == 0) {
-		throw DecodeError (_("could not find video decoder"));
-	}
-
-	if (avcodec_open2 (context, codec, 0) < 0) {
-		throw DecodeError (N_("could not open video decoder"));
-	}
-}
-
-void
-FFmpeg::setup_audio ()
+FFmpeg::setup_decoders ()
 {
 	boost::mutex::scoped_lock lm (_mutex);
 
 	for (uint32_t i = 0; i < _format_context->nb_streams; ++i) {
 		AVCodecContext* context = _format_context->streams[i]->codec;
-		if (context->codec_type != AVMEDIA_TYPE_AUDIO) {
-			continue;
-		}
 		
 		AVCodec* codec = avcodec_find_decoder (context->codec_id);
-		if (codec == 0) {
-			throw DecodeError (_("could not find audio decoder"));
-		}
-		
-		if (avcodec_open2 (context, codec, 0) < 0) {
-			throw DecodeError (N_("could not open audio decoder"));
+		if (codec) {
+			if (avcodec_open2 (context, codec, 0) < 0) {
+				throw DecodeError (N_("could not open decoder"));
+			}
 		}
+
+		/* We are silently ignoring any failures to find suitable decoders here */
 	}
 }
 
-
 AVCodecContext *
 FFmpeg::video_codec_context () const
 {
@@ -201,6 +175,16 @@ FFmpeg::audio_codec_context () const
 	return _ffmpeg_content->audio_stream()->stream(_format_context)->codec;
 }
 
+AVCodecContext *
+FFmpeg::subtitle_codec_context () const
+{
+	if (!_ffmpeg_content->subtitle_stream ()) {
+		return 0;
+	}
+	
+	return _ffmpeg_content->subtitle_stream()->stream(_format_context)->codec;
+}
+
 int
 FFmpeg::avio_read (uint8_t* buffer, int const amount)
 {