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95 lines
2.9 KiB
95 lines
2.9 KiB
/*****************************************************************************
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* mmdevice.h : Windows Multimedia Device API audio output plugin for VLC
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*****************************************************************************
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* Copyright (C) 2012 Rémi Denis-Courmont
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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#ifndef VLC_AOUT_MMDEVICE_H
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# define VLC_AOUT_MMDEVICE_H 1
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typedef struct aout_stream aout_stream_t;
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/**
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* Audio output simplified API for Windows
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*/
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struct aout_stream
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{
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VLC_COMMON_MEMBERS
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void *sys;
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HRESULT (*time_get)(aout_stream_t *, mtime_t *);
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HRESULT (*play)(aout_stream_t *, block_t *);
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HRESULT (*pause)(aout_stream_t *, bool);
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HRESULT (*flush)(aout_stream_t *);
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struct
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{
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void *device;
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HRESULT (*activate)(void *device, REFIID, PROPVARIANT *, void **);
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} owner;
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};
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/**
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* Creates an audio output stream on a given Windows multimedia device.
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* \param s audio output stream object to be initialized
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* \param fmt audio output sample format [IN/OUT]
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* \param sid audio output session GUID [IN]
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*/
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typedef HRESULT (*aout_stream_start_t)(aout_stream_t *s,
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audio_sample_format_t *fmt, const GUID *sid);
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/**
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* Destroys an audio output stream.
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*/
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typedef HRESULT (*aout_stream_stop_t)(aout_stream_t *);
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static inline HRESULT aout_stream_TimeGet(aout_stream_t *s, mtime_t *delay)
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{
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return (s->time_get)(s, delay);
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}
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static inline HRESULT aout_stream_Play(aout_stream_t *s, block_t *block)
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{
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return (s->play)(s, block);
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}
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static inline HRESULT aout_stream_Pause(aout_stream_t *s, bool paused)
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{
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return (s->pause)(s, paused);
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}
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static inline HRESULT aout_stream_Flush(aout_stream_t *s, bool wait)
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{
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if (wait)
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{ /* Loosy drain emulation */
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mtime_t delay;
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if (SUCCEEDED(aout_stream_TimeGet(s, &delay)))
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Sleep((delay / (CLOCK_FREQ / 1000)) + 1);
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return S_OK;
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}
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else
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return (s->flush)(s);
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}
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static inline
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HRESULT aout_stream_Activate(aout_stream_t *s, REFIID iid,
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PROPVARIANT *actparms, void **pv)
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{
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return s->owner.activate(s->owner.device, iid, actparms, pv);
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}
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#endif
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