From b367772b5f6966ef99ea0914b8e10644b18652ea Mon Sep 17 00:00:00 2001
From: Matthew Hoops
Date: Sun, 11 Dec 2011 12:38:06 -0500
Subject: VIDEO: Add support for QuickTime video track edit lists

---
 common/quicktime.cpp | 19 ++++++++++---------
 1 file changed, 10 insertions(+), 9 deletions(-)

(limited to 'common/quicktime.cpp')

diff --git a/common/quicktime.cpp b/common/quicktime.cpp
index 9ea8c229ea..e16d3f2652 100644
--- a/common/quicktime.cpp
+++ b/common/quicktime.cpp
@@ -386,8 +386,7 @@ int QuickTimeParser::readTKHD(Atom atom) {
 
 	/* track->id = */_fd->readUint32BE(); // track id (NOT 0 !)
 	_fd->readUint32BE(); // reserved
-	//track->startTime = 0; // check
-	(version == 1) ? (_fd->readUint32BE(), _fd->readUint32BE()) : _fd->readUint32BE(); // highlevel (considering edits) duration in movie timebase
+	track->duration = (version == 1) ? (_fd->readUint32BE(), _fd->readUint32BE()) : _fd->readUint32BE(); // highlevel (considering edits) duration in movie timebase
 	_fd->readUint32BE(); // reserved
 	_fd->readUint32BE(); // reserved
 
@@ -410,8 +409,8 @@ int QuickTimeParser::readTKHD(Atom atom) {
 	track->scaleFactorY.debugPrint(1, "readTKHD(): scaleFactorY =");
 
 	// these are fixed-point, 16:16
-	// uint32 tkWidth = _fd->readUint32BE() >> 16; // track width
-	// uint32 tkHeight = _fd->readUint32BE() >> 16; // track height
+	//_fd->readUint32BE() >> 16; // track width
+	//_fd->readUint32BE() >> 16; // track height
 
 	return 0;
 }
@@ -428,17 +427,18 @@ int QuickTimeParser::readELST(Atom atom) {
 
 	debug(2, "Track %d edit list count: %d", _tracks.size() - 1, track->editCount);
 
+	uint32 offset = 0;
+
 	for (uint32 i = 0; i < track->editCount; i++){
 		track->editList[i].trackDuration = _fd->readUint32BE();
 		track->editList[i].mediaTime = _fd->readSint32BE();
 		track->editList[i].mediaRate = Rational(_fd->readUint32BE(), 0x10000);
-		debugN(3, "\tDuration = %d, Media Time = %d, ", track->editList[i].trackDuration, track->editList[i].mediaTime);
+		track->editList[i].timeOffset = offset;
+		debugN(3, "\tDuration = %d (Offset = %d), Media Time = %d, ", track->editList[i].trackDuration, offset, track->editList[i].mediaTime);
 		track->editList[i].mediaRate.debugPrint(3, "Media Rate =");
+		offset += track->editList[i].trackDuration;
 	}
 
-	if (track->editCount != 1)
-		warning("Multiple edit list entries. Things may go awry");
-
 	return 0;
 }
 
@@ -500,7 +500,7 @@ int QuickTimeParser::readMDHD(Atom atom) {
 	}
 
 	track->timeScale = _fd->readUint32BE();
-	track->duration = (version == 1) ? (_fd->readUint32BE(), _fd->readUint32BE()) : _fd->readUint32BE(); // duration
+	track->mediaDuration = (version == 1) ? (_fd->readUint32BE(), _fd->readUint32BE()) : _fd->readUint32BE(); // duration
 
 	_fd->readUint16BE(); // language
 	_fd->readUint16BE(); // quality
@@ -793,6 +793,7 @@ QuickTimeParser::Track::Track() {
 	duration = 0;
 	startTime = 0;
 	objectTypeMP4 = 0;
+	mediaDuration = 0;
 }
 
 QuickTimeParser::Track::~Track() {
-- 
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