mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-22 01:39:57 +00:00
112 lines
2.8 KiB
C++
112 lines
2.8 KiB
C++
/* ScummVM - Graphic Adventure Engine
|
|
*
|
|
* ScummVM is the legal property of its developers, whose names
|
|
* are too numerous to list here. Please refer to the COPYRIGHT
|
|
* file distributed with this source distribution.
|
|
*
|
|
* This program 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 2
|
|
* of the License, or (at your option) any later version.
|
|
|
|
* This program 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 this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*
|
|
*/
|
|
|
|
|
|
#include "common/textconsole.h"
|
|
|
|
#include "scumm/smush/channel.h"
|
|
|
|
namespace Scumm {
|
|
|
|
SmushChannel::SmushChannel(int32 track) :
|
|
_track(track),
|
|
_tbuffer(0),
|
|
_tbufferSize(0),
|
|
_sbuffer(0),
|
|
_sbufferSize(0),
|
|
_dataSize(-1),
|
|
_inData(false),
|
|
_volume(0),
|
|
_pan(0) {
|
|
}
|
|
|
|
SmushChannel::~SmushChannel() {
|
|
free(_tbuffer);
|
|
free(_sbuffer);
|
|
}
|
|
|
|
void SmushChannel::processBuffer() {
|
|
assert(_tbuffer != 0);
|
|
assert(_tbufferSize != 0);
|
|
assert(_sbuffer == 0);
|
|
assert(_sbufferSize == 0);
|
|
|
|
if (_inData) {
|
|
if (_dataSize < _tbufferSize) {
|
|
int32 offset = _dataSize;
|
|
while (handleSubTags(offset))
|
|
;
|
|
_sbufferSize = _dataSize;
|
|
_sbuffer = _tbuffer;
|
|
if (offset < _tbufferSize) {
|
|
int new_size = _tbufferSize - offset;
|
|
_tbuffer = (byte *)malloc(new_size);
|
|
if (!_tbuffer)
|
|
error("smush channel failed to allocate memory");
|
|
memcpy(_tbuffer, _sbuffer + offset, new_size);
|
|
_tbufferSize = new_size;
|
|
} else {
|
|
_tbuffer = 0;
|
|
_tbufferSize = 0;
|
|
}
|
|
if (_sbufferSize == 0) {
|
|
free(_sbuffer);
|
|
_sbuffer = 0;
|
|
}
|
|
} else {
|
|
_sbufferSize = _tbufferSize;
|
|
_sbuffer = _tbuffer;
|
|
_tbufferSize = 0;
|
|
_tbuffer = 0;
|
|
}
|
|
} else {
|
|
int32 offset = 0;
|
|
while (handleSubTags(offset))
|
|
;
|
|
if (_inData) {
|
|
_sbufferSize = _tbufferSize - offset;
|
|
assert(_sbufferSize);
|
|
_sbuffer = (byte *)malloc(_sbufferSize);
|
|
if (!_sbuffer)
|
|
error("smush channel failed to allocate memory");
|
|
memcpy(_sbuffer, _tbuffer + offset, _sbufferSize);
|
|
free(_tbuffer);
|
|
_tbuffer = 0;
|
|
_tbufferSize = 0;
|
|
} else {
|
|
if (offset) {
|
|
byte *old = _tbuffer;
|
|
int32 new_size = _tbufferSize - offset;
|
|
_tbuffer = (byte *)malloc(new_size);
|
|
if (!_tbuffer)
|
|
error("smush channel failed to allocate memory");
|
|
memcpy(_tbuffer, old + offset, new_size);
|
|
_tbufferSize = new_size;
|
|
free(old);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
} // End of namespace Scumm
|