de79efc64d
This player is not fully tested due to occasional drops on the output caused CRC errors when used with encoded audio such as Dolby E. However these drops have been observed with aplay when used in memory mapped mode so it is not believed to be an issue with this player. However, final testing is still outstanding
186 lines
6.7 KiB
C
186 lines
6.7 KiB
C
#ifndef PA_WIN_WMME_H
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#define PA_WIN_WMME_H
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/*
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* $Id$
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* PortAudio Portable Real-Time Audio Library
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* MME specific extensions
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*
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* Copyright (c) 1999-2000 Ross Bencina and Phil Burk
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
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* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/*
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* The text above constitutes the entire PortAudio license; however,
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* the PortAudio community also makes the following non-binding requests:
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*
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* Any person wishing to distribute modifications to the Software is
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* requested to send the modifications to the original developer so that
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* they can be incorporated into the canonical version. It is also
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* requested that these non-binding requests be included along with the
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* license above.
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*/
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/** @file
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@ingroup public_header
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@brief WMME-specific PortAudio API extension header file.
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*/
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#include "portaudio.h"
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#include "pa_win_waveformat.h"
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#ifdef __cplusplus
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extern "C"
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{
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#endif /* __cplusplus */
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/* The following are flags which can be set in
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PaWinMmeStreamInfo's flags field.
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*/
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#define paWinMmeUseLowLevelLatencyParameters (0x01)
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#define paWinMmeUseMultipleDevices (0x02) /* use mme specific multiple device feature */
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#define paWinMmeUseChannelMask (0x04)
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/* By default, the mme implementation drops the processing thread's priority
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to THREAD_PRIORITY_NORMAL and sleeps the thread if the CPU load exceeds 100%
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This flag disables any priority throttling. The processing thread will always
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run at THREAD_PRIORITY_TIME_CRITICAL.
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*/
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#define paWinMmeDontThrottleOverloadedProcessingThread (0x08)
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/* Flags for non-PCM spdif passthrough.
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*/
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#define paWinMmeWaveFormatDolbyAc3Spdif (0x10)
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#define paWinMmeWaveFormatWmaSpdif (0x20)
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typedef struct PaWinMmeDeviceAndChannelCount{
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PaDeviceIndex device;
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int channelCount;
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}PaWinMmeDeviceAndChannelCount;
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typedef struct PaWinMmeStreamInfo{
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unsigned long size; /**< sizeof(PaWinMmeStreamInfo) */
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PaHostApiTypeId hostApiType; /**< paMME */
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unsigned long version; /**< 1 */
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unsigned long flags;
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/* low-level latency setting support
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These settings control the number and size of host buffers in order
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to set latency. They will be used instead of the generic parameters
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to Pa_OpenStream() if flags contains the PaWinMmeUseLowLevelLatencyParameters
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flag.
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If PaWinMmeStreamInfo structures with PaWinMmeUseLowLevelLatencyParameters
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are supplied for both input and output in a full duplex stream, then the
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input and output framesPerBuffer must be the same, or the larger of the
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two must be a multiple of the smaller, otherwise a
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paIncompatibleHostApiSpecificStreamInfo error will be returned from
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Pa_OpenStream().
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*/
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unsigned long framesPerBuffer;
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unsigned long bufferCount; /* formerly numBuffers */
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/* multiple devices per direction support
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If flags contains the PaWinMmeUseMultipleDevices flag,
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this functionality will be used, otherwise the device parameter to
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Pa_OpenStream() will be used instead.
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If devices are specified here, the corresponding device parameter
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to Pa_OpenStream() should be set to paUseHostApiSpecificDeviceSpecification,
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otherwise an paInvalidDevice error will result.
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The total number of channels accross all specified devices
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must agree with the corresponding channelCount parameter to
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Pa_OpenStream() otherwise a paInvalidChannelCount error will result.
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*/
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PaWinMmeDeviceAndChannelCount *devices;
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unsigned long deviceCount;
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/*
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support for WAVEFORMATEXTENSIBLE channel masks. If flags contains
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paWinMmeUseChannelMask this allows you to specify which speakers
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to address in a multichannel stream. Constants for channelMask
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are specified in pa_win_waveformat.h
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*/
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PaWinWaveFormatChannelMask channelMask;
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}PaWinMmeStreamInfo;
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/** Retrieve the number of wave in handles used by a PortAudio WinMME stream.
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Returns zero if the stream is output only.
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@return A non-negative value indicating the number of wave in handles
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or, a PaErrorCode (which are always negative) if PortAudio is not initialized
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or an error is encountered.
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@see PaWinMME_GetStreamInputHandle
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*/
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int PaWinMME_GetStreamInputHandleCount( PaStream* stream );
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/** Retrieve a wave in handle used by a PortAudio WinMME stream.
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@param stream The stream to query.
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@param handleIndex The zero based index of the wave in handle to retrieve. This
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should be in the range [0, PaWinMME_GetStreamInputHandleCount(stream)-1].
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@return A valid wave in handle, or NULL if an error occurred.
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@see PaWinMME_GetStreamInputHandle
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*/
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HWAVEIN PaWinMME_GetStreamInputHandle( PaStream* stream, int handleIndex );
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/** Retrieve the number of wave out handles used by a PortAudio WinMME stream.
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Returns zero if the stream is input only.
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@return A non-negative value indicating the number of wave out handles
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or, a PaErrorCode (which are always negative) if PortAudio is not initialized
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or an error is encountered.
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@see PaWinMME_GetStreamOutputHandle
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*/
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int PaWinMME_GetStreamOutputHandleCount( PaStream* stream );
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/** Retrieve a wave out handle used by a PortAudio WinMME stream.
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@param stream The stream to query.
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@param handleIndex The zero based index of the wave out handle to retrieve.
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This should be in the range [0, PaWinMME_GetStreamOutputHandleCount(stream)-1].
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@return A valid wave out handle, or NULL if an error occurred.
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@see PaWinMME_GetStreamOutputHandleCount
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*/
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HWAVEOUT PaWinMME_GetStreamOutputHandle( PaStream* stream, int handleIndex );
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* PA_WIN_WMME_H */
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