This is a partial fix for an audio regression. The other part of
the fix requires a change in pcaudiolib to reopen the audio device
on flush requests for affected audio drivers/devices.

This reverts commit f9ab812e00.

This restores the behaviour removed in commit
ca831d236a.

When using eSpeak for audio and eSpeak in a server, using the async
speech requests, that code stopped the audio as soon as possible
from a cancel request. This allows servers like brltty to be more
responsive.

This reverts commit 1b5ea47ea4.

This patch is causing lockups when using this with servers like brltty.

This allows process_espeak_command to stop as soon as possible

Using emacspeak server with espeak-ng (still not published) found that audio was only being stoped after a command is processed (i.e. using pcaudiolib).
This fixes this issue.

If a command ran to completion before the thread calling
fifo_add_command woke up, that thread would wait forever
for the command to start, never realizing that it had already
finished.

This is handled by calls to espeak_ng_Cancel/espeak_Cancel and
espeak_ng_Terminate/espeak_Terminate.

Removing these calls do not impact on the behaviour of the program
and simplify the wave.h API.

The debugging code is done inconsistently, mainly to trace the
event and audio output logic. This makes it harder to understand
the code flow for logic that is not enabled by default.

As such the debugging code makes the code harder to maintain.

This moves the libespeak source (*.cpp) files to src/libespeak-ng
and renames the C files (libespeak, espeak, speak) so they have
a .c file extension.

Program changes to enable audio output from Windows DLL.

Language changes: an, de, en, nl, ta.


git-svn-id: https://espeak.svn.sourceforge.net/svnroot/espeak/trunk@365 d46cf337-b52f-0410-862d-fd96e6ae7743

Change program code for espeak/libespeak to C, remove C++ features.

Language changes: af, ga, grc, hu, nl, sw, ta


git-svn-id: https://espeak.svn.sourceforge.net/svnroot/espeak/trunk@364 d46cf337-b52f-0410-862d-fd96e6ae7743

Add --version command-line option.

Allow hexadecimal numbers for UTF-8 bytes in rules in *_rules files.

wave_pulse.cpp, ensure wave_close is not called again while waiting.


git-svn-id: https://espeak.svn.sourceforge.net/svnroot/espeak/trunk@278 d46cf337-b52f-0410-862d-fd96e6ae7743

Fixed bug where SSML voice change didn't remember an initially specified Klatt variant.

Removed some unused variables and redundant initializations.

Patch to fix a spike from Klatt function setzeroabc()


git-svn-id: https://espeak.svn.sourceforge.net/svnroot/espeak/trunk@275 d46cf337-b52f-0410-862d-fd96e6ae7743

Change Translator from Class to Struct, so avoiding use of Classes in eSpeak.
Make more functions and variables "extern".


git-svn-id: https://espeak.svn.sourceforge.net/svnroot/espeak/trunk@209 d46cf337-b52f-0410-862d-fd96e6ae7743

git-svn-id: https://espeak.svn.sourceforge.net/svnroot/espeak/trunk@176 d46cf337-b52f-0410-862d-fd96e6ae7743

Add stress_rule=4, altepenultimate stress.
Change license to GPL version 3.


git-svn-id: https://espeak.svn.sourceforge.net/svnroot/espeak/trunk@56 d46cf337-b52f-0410-862d-fd96e6ae7743