From e259531ce59ab1f31de5a23124b22536f6a5a767 Mon Sep 17 00:00:00 2001 From: James Dong Date: Mon, 2 Aug 2010 19:13:40 -0700 Subject: Use audio clock as the reference media clock o Only do this for realtime applications o Adjust other track clock based on audio clock o Assume other track uses wall clock as the media clock o Use some heuristics to reduce the size of stts box by 2/3. - also o Remove one unused key from MetaData.h Change-Id: Ib9432842627b61795b533508158c25258a527332 --- include/media/stagefright/MPEG4Writer.h | 6 ++++++ include/media/stagefright/MetaData.h | 4 ++-- 2 files changed, 8 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/include/media/stagefright/MPEG4Writer.h b/include/media/stagefright/MPEG4Writer.h index 2e1e8d8..be96935 100644 --- a/include/media/stagefright/MPEG4Writer.h +++ b/include/media/stagefright/MPEG4Writer.h @@ -128,6 +128,12 @@ private: // Write the first chunk from the given ChunkInfo. void writeFirstChunk(ChunkInfo* info); + // Adjust other track media clock (presumably wall clock) + // based on audio track media clock with the drift time. + int64_t mDriftTimeUs; + void addDriftTimeUs(int64_t driftTimeUs); + int64_t getDriftTimeUs(); + void lock(); void unlock(); diff --git a/include/media/stagefright/MetaData.h b/include/media/stagefright/MetaData.h index ab1fa4f..43354c2 100644 --- a/include/media/stagefright/MetaData.h +++ b/include/media/stagefright/MetaData.h @@ -86,10 +86,10 @@ enum { // Track authoring progress status // kKeyTrackTimeStatus is used to track progress in elapsed time - // kKeyTrackFrameStatus is used to track progress in authored frames - kKeyTrackFrameStatus = 'tkfm', // int32_t kKeyTrackTimeStatus = 'tktm', // int64_t + kKeyNotRealTime = 'ntrt', // bool (int32_t) + }; enum { -- cgit v1.1