ECHO_CLOCK_MTC
if (ECHO_CLOCK_MTC == wOldClock)
if (ECHO_CLOCK_MTC == m_wInputClock)
if (ECHO_CLOCK_MTC == m_wInputClock)
if (ECHO_CLOCK_MTC == wClock)
if (ECHO_CLOCK_MTC != m_wInputClock)
m_wInputClock = ECHO_CLOCK_MTC;
#define ECHO_CLOCK_BIT_MTC (1<<ECHO_CLOCK_MTC)