$ git submodule init
$ ./FFmpeg-iOS-build-script/build-ffmpeg.sh
###2016.09.03
- add MediaData protocol
- add VideoData: MediaData
- add AudioData: MediaData
- reduce memory usage
###2016.09.02
- pull out SDL from Player.swift and doing update video on ViewController.swift
- resolve thread dead races
- resolve memory leaks
- reduce memory usage
###2016.09.01
- use Accelerate for copy audio stream
- stop using AVFilter
- AVAudioEngine playing with Float Planar audio format
###add SwiftPlayer project
- Using AVAudioEngine, and exclude SDL audio
- syncing with CADisplayLink, DispatchQueue, DispatchSemaphore
- No more referencing ffmpeg tutorials. It is too old, and never working well.
###TODO
- add seeking functions
###olds
- tutorial1
- export from video to image files
- tutorial2
- play video with SDL
- decoding with avfilter
swift only coding is not working now.
- crashing from avfiltercontext type casting problem
- some macros cannot bridging to swift
SDL2.0 + ffmpeg 3.1.1 + swift is different from olds
- using AVFilter instead of SWScale
- using SDL_Texture, SDL_Renderer, SDL_Window instead of SDL_Overlay, SDL_Surface
- using avcodec_send_packet, avcodec_receive_frame instead of avcodec_decode_video2, avcodec_decode_audio4
now working on tutorial4