From a28ef704adf8c5bfa45b3d6285f741af64758ceb Mon Sep 17 00:00:00 2001
From: Carl Hetherington <cth@carlh.net>
Date: Thu, 8 Dec 2016 11:23:58 +0000
Subject: Further fixes and tidying to 'better-seek'.

This fixes the failure to keep track of the `position' of
each stream of a multi-stream file.  It also tidies things
up a bit.
---
 src/lib/audio_decoder.cc | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

(limited to 'src/lib/audio_decoder.cc')

diff --git a/src/lib/audio_decoder.cc b/src/lib/audio_decoder.cc
index fd0835596..1b1ae70c0 100644
--- a/src/lib/audio_decoder.cc
+++ b/src/lib/audio_decoder.cc
@@ -32,6 +32,7 @@
 using std::cout;
 using std::map;
 using boost::shared_ptr;
+using boost::optional;
 
 AudioDecoder::AudioDecoder (Decoder* parent, shared_ptr<const AudioContent> content, shared_ptr<Log> log)
 	: DecoderPart (parent, log)
@@ -83,7 +84,7 @@ AudioDecoder::give (AudioStreamPtr stream, shared_ptr<const AudioBuffers> data,
 void
 AudioDecoder::flush ()
 {
-	for (map<AudioStreamPtr, shared_ptr<AudioDecoderStream> >::const_iterator i = _streams.begin(); i != _streams.end(); ++i) {
+	for (StreamMap::const_iterator i = _streams.begin(); i != _streams.end(); ++i) {
 		i->second->flush ();
 	}
 }
@@ -92,7 +93,7 @@ void
 AudioDecoder::seek (ContentTime t, bool accurate)
 {
 	_log->log (String::compose ("AD seek to %1", to_string(t)), LogEntry::TYPE_DEBUG_DECODE);
-	for (map<AudioStreamPtr, shared_ptr<AudioDecoderStream> >::const_iterator i = _streams.begin(); i != _streams.end(); ++i) {
+	for (StreamMap::const_iterator i = _streams.begin(); i != _streams.end(); ++i) {
 		i->second->seek (t, accurate);
 	}
 }
@@ -100,7 +101,19 @@ AudioDecoder::seek (ContentTime t, bool accurate)
 void
 AudioDecoder::set_fast ()
 {
-	for (map<AudioStreamPtr, shared_ptr<AudioDecoderStream> >::const_iterator i = _streams.begin(); i != _streams.end(); ++i) {
+	for (StreamMap::const_iterator i = _streams.begin(); i != _streams.end(); ++i) {
 		i->second->set_fast ();
 	}
 }
+
+optional<ContentTime>
+AudioDecoder::position () const
+{
+	optional<ContentTime> pos;
+	for (StreamMap::const_iterator i = _streams.begin(); i != _streams.end(); ++i) {
+		if (!pos || (i->second->position() && i->second->position().get() < pos.get())) {
+			pos = i->second->position();
+		}
+	}
+	return pos;
+}
-- 
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