replay: improve segment download and merge (#22654)

* no-cache mode

* fix test cases build error

* space

* don't create cache dir in no-cache mode

* fix errors in test cases

* no_local_cache_

* set the number of connections by chunk_size

* use size_t instead of int64_t

* add test case for no-cache mode

* rename variables

* fix SIGSEGV

* cleanup

* faster decompressBZ2

* always decompress bz2

* add test cases

* prepare for python interface

* fix test cases build error

* continue

* camera_replay: cache remote file

* protected inheritance

* single option name

* TODO

* test_case for LogReader&FrameReader

* fix wrong require

* test case for FileReader

* cleanup test

* test:fix wrong filename

* check cached file's checksum

* fix mkdir permissions err

cleanup filereader

* remove initialize libav network libraries.

dd

* abort all loading if one failed

* cleanup tests

* use threadpool to limit concurrent downloads

* cache more segments

* merge 3 segments for replay

* one segment uses about 100M of memory

* use segments_need_merge.size()

* shutdown

* fix stuck if exit replay  before keyboard thread started

* load one segment at a time

* small cleanup

* cleanup filereader

* space

* tiny cleanup

* merge master

* cleanup test cases

* use util:create_directories

* cleanup framereader

selfdrive/ui/SConscript

@@ -112,7 +112,7 @@ if GetOption('extras'):
 if arch in ['x86_64', 'Darwin'] or GetOption('extras'):
   qt_env['CXXFLAGS'] += ["-Wno-deprecated-declarations"]
 
-  replay_lib_src = ["replay/replay.cc", "replay/camera.cc", "replay/logreader.cc", "replay/framereader.cc", "replay/route.cc", "replay/util.cc"]
+  replay_lib_src = ["replay/replay.cc", "replay/camera.cc", "replay/filereader.cc", "replay/logreader.cc", "replay/framereader.cc", "replay/route.cc", "replay/util.cc"]
 
   replay_lib = qt_env.Library("qt_replay", replay_lib_src, LIBS=base_libs)
   replay_libs = [replay_lib, 'avutil', 'avcodec', 'avformat', 'bz2', 'curl', 'swscale'] + qt_libs