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audio.cpp    84 lines (67 with data), 2.1 kB

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// Copyright (C) 2010 David Sugar, Tycho Softworks.
//
// This file is part of GNU uCommon C++.
//
// GNU uCommon C++ is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 3 of the License, or
// (at your option) any later version.
//
// GNU uCommon C++ is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with GNU uCommon C++. If not, see <http://www.gnu.org/licenses/>.
#include <config.h>
#include <ucommon/audio.h>
using namespace UCOMMON_NAMESPACE;
static const audiocodec *ac = NULL;
static unsigned relcount = 0;
static uint8_t buftest;
class debugbuffer : public audiobuffer
{
private:
debugbuffer() {
buffer = &buftest;
state = ACTIVE;
// we assume overlay data remains correct at construction...
assert(channel == ac);
assert(backpos == 0);
assert(backstore != 0);
}
void release(void) {
// we assume overlay data remains intact for life of object...
assert(channel->basetype() == ac->basetype());
assert(backpos == 0);
assert(backstore != 0);
++relcount;
audiobuffer::release();
}
unsigned offset(void) {
return sizeof(debugbuffer);
}
public:
static void attach(audiobuffer *buffer) {
caddr_t cp = (caddr_t)buffer;
new(cp) debugbuffer();
}
static encoded_t bufof(audiobuffer *buffer) {
return ((debugbuffer *)buffer)->getBuffer();
}
};
int main(int argc, char **argv)
{
ac = audiocodec::get("pcmu");
assert(ac != NULL);
audiobuffer *buffer = audiobuffer::create(ac, 0);
assert(buffer != NULL);
debugbuffer::attach(buffer);
assert(debugbuffer::bufof(buffer) == &buftest);
buffer->release();
assert(relcount == 1);
assert(debugbuffer::bufof(buffer) == NULL);
audio::release(buffer);
assert(relcount == 2);
}