GitLab

remove unecessary mutex around SDL_pumpevents() that was causing a dead lock due to recursion of CFRunLoop inside pumpevent().

Uniforms were used without program set

To be used, a GLSurfaceView must be setup in app layout

It uses shaders to convert and display yuv images.

- depacketizer throws less away packet away (improved quality in low-quality network environment)
- reusage of the same buffer to store decompressed yuv image to reduce malloc count

-use spandsp if we have it, otherwise use built in version
-add ptime handling through fmtp

Conflicts:

	build/iphone/alldescs.h
	include/mediastreamer2/allfilters.h

add new --payload option to set the payload type using name instead of number, like --payload "audio/g726/8000"

On request of changing speaker phone state the sound_read filter is post_processed,
speaker state is changed by calling back java application through jni,
then sound_read filter is pre_processed.

By doing this, the speaker state changes effectively and the microphone still outputs sounds.

speakerOn = true : loud speaker
speakerOn = false: earpiece