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- // VirtualDub - Video processing and capture application
- // Copyright (C) 1998-2001 Avery Lee
- //
- // 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., 675 Mass Ave, Cambridge, MA 02139, USA.
-
- #ifndef f_AVIAUDIOOUTPUT_H
- #define f_AVIAUDIOOUTPUT_H
-
- #include <windows.h>
-
- class AVIAudioOutputBuffer {
- public:
- AVIAudioOutputBuffer *next,*prev;
- WAVEHDR hdr;
- DWORD dwBytesInBuffer;
-
- AVIAudioOutputBuffer(long bsize);
- ~AVIAudioOutputBuffer();
- BOOL init(HWAVEOUT hWaveOut);
- BOOL post(HWAVEOUT hWaveOut);
- void deinit(HWAVEOUT hWaveOut);
- };
-
- class AVIAudioOutput {
- private:
- AVIAudioOutputBuffer *pending, *pending_tail, *active;
- long bufsize;
- int numbufs, maxbufs;
- HWAVEOUT hWaveOut;
- HANDLE hEventBuffersFree;
- char fill_byte;
- DWORD nSamplesPerSec;
- DWORD nAvgBytesPerSec;
- int iBuffersActive;
- long lAvailSpace;
-
- enum {
- STATE_NONE = 0,
- STATE_OPENED = 1,
- STATE_PLAYING = 2,
- STATE_SILENT = 10,
- } curState;
-
- BOOL postBuffer(AVIAudioOutputBuffer *aaob);
- public:
- AVIAudioOutput(long bufsize, int maxbufs);
- ~AVIAudioOutput();
-
- BOOL init(WAVEFORMATEX *wf);
- void go_silent();
- BOOL isSilent();
- BOOL start();
- BOOL checkBuffers();
- BOOL waitBuffers(DWORD timeout);
- long avail();
- BOOL write(void *data, long len, DWORD timeout);
- BOOL stop();
- BOOL finalize(DWORD timeout);
- void flush();
- long position();
- bool isFrozen();
- };
-
- #endif
-