FreeRDP/include/freerdp/server/rdpsnd.h

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/**
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* FreeRDP: A Remote Desktop Protocol Implementation
* Server Audio Virtual Channel
*
* Copyright 2012 Vic Lee
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
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#ifndef FREERDP_CHANNEL_RDPSND_SERVER_H
#define FREERDP_CHANNEL_RDPSND_SERVER_H
#include <freerdp/channels/wtsvc.h>
#include <freerdp/channels/rdpsnd.h>
typedef struct _rdpsnd_server_context RdpsndServerContext;
typedef struct _rdpsnd_server_context rdpsnd_server_context;
typedef struct _rdpsnd_server_private RdpsndServerPrivate;
typedef int (*psRdpsndStart)(RdpsndServerContext* context);
typedef int (*psRdpsndStop)(RdpsndServerContext* context);
typedef BOOL (*psRdpsndServerInitialize)(RdpsndServerContext* context);
typedef void (*psRdpsndServerSelectFormat)(RdpsndServerContext* context, int client_format_index);
typedef BOOL (*psRdpsndServerSendSamples)(RdpsndServerContext* context, const void* buf, int nframes);
typedef BOOL (*psRdpsndServerSetVolume)(RdpsndServerContext* context, int left, int right);
typedef BOOL (*psRdpsndServerClose)(RdpsndServerContext* context);
typedef void (*psRdpsndServerActivated)(RdpsndServerContext* context);
struct _rdpsnd_server_context
{
WTSVirtualChannelManager* vcm;
psRdpsndStart Start;
psRdpsndStop Stop;
RdpsndServerPrivate* priv;
/* Server self-defined pointer. */
void* data;
/* Server supported formats. Set by server. */
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const AUDIO_FORMAT* server_formats;
int num_server_formats;
/* Server source PCM audio format. Set by server. */
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AUDIO_FORMAT src_format;
/* Client supported formats. */
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AUDIO_FORMAT* client_formats;
int num_client_formats;
int selected_client_format;
/* Last sent audio block number. */
int block_no;
/*** APIs called by the server. ***/
/**
* Initialize the channel. The caller should check the return value to see
* whether the initialization succeed. If not, the "Activated" callback
* will not be called and the server must not call any API on this context.
*/
psRdpsndServerInitialize Initialize;
/**
* Choose the audio format to be sent. The index argument is an index into
* the client_formats array and must be smaller than num_client_formats.
*/
psRdpsndServerSelectFormat SelectFormat;
/**
* Send audio samples. Actually bytes in the buffer must be:
* nframes * src_format.nBitsPerSample * src_format.nChannels / 8
*/
psRdpsndServerSendSamples SendSamples;
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/**
* Set the volume level of the client. Valid range is between 0 and 0xFFFF.
*/
psRdpsndServerSetVolume SetVolume;
/**
* Close the audio stream.
*/
psRdpsndServerClose Close;
/*** Callbacks registered by the server. ***/
/**
* The channel has been activated. The server maybe choose audio format and
* start audio stream from this point. Note that this callback is called
* from a different thread context so the server must be careful of thread
* synchronization.
*/
psRdpsndServerActivated Activated;
};
#ifdef __cplusplus
extern "C" {
#endif
FREERDP_API RdpsndServerContext* rdpsnd_server_context_new(WTSVirtualChannelManager* vcm);
FREERDP_API void rdpsnd_server_context_free(RdpsndServerContext* context);
#ifdef __cplusplus
}
#endif
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#endif /* FREERDP_CHANNEL_RDPSND_SERVER_H */