More ticket #619: fix the difference of volume in the fixed point version of the tone generator, added PJMEDIA_TONEGEN_VOLUME setting to control the default amplitude, and increase default tone volume by about 50%

git-svn-id: https://svn.pjsip.org/repos/pjproject/trunk@2284 74dad513-b988-da41-8d7b-12977e46ad98
3 files changed