136 lines
4.4 KiB
C
136 lines
4.4 KiB
C
/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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* Server Audio Virtual Channel
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*
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* Copyright 2012 Vic Lee
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* Copyright 2015 Thincast Technologies GmbH
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* Copyright 2015 DI (FH) Martin Haimberger <martin.haimberger@thincast.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef FREERDP_CHANNEL_RDPSND_SERVER_H
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#define FREERDP_CHANNEL_RDPSND_SERVER_H
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#include <freerdp/channels/wtsvc.h>
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#include <freerdp/channels/rdpsnd.h>
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typedef struct _rdpsnd_server_context RdpsndServerContext;
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typedef struct _rdpsnd_server_context rdpsnd_server_context;
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typedef struct _rdpsnd_server_private RdpsndServerPrivate;
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typedef UINT (*psRdpsndStart)(RdpsndServerContext* context);
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typedef UINT (*psRdpsndStop)(RdpsndServerContext* context);
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typedef UINT (*psRdpsndServerInitialize)(RdpsndServerContext* context, BOOL ownThread);
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typedef UINT (*psRdpsndServerSelectFormat)(RdpsndServerContext* context, int client_format_index);
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typedef UINT (*psRdpsndServerSendSamples)(RdpsndServerContext* context, const void* buf, int nframes, UINT16 wTimestamp);
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typedef UINT (*psRdpsndServerConfirmBlock)(RdpsndServerContext* context, BYTE confirmBlockNum, UINT16 wtimestamp);
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typedef UINT (*psRdpsndServerSetVolume)(RdpsndServerContext* context, int left, int right);
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typedef UINT (*psRdpsndServerClose)(RdpsndServerContext* context);
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typedef void (*psRdpsndServerActivated)(RdpsndServerContext* context);
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struct _rdpsnd_server_context
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{
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HANDLE vcm;
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psRdpsndStart Start;
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psRdpsndStop Stop;
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RdpsndServerPrivate* priv;
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/* Server self-defined pointer. */
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void* data;
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/* Server supported formats. Set by server. */
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const AUDIO_FORMAT* server_formats;
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int num_server_formats;
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/* Server source PCM audio format. Set by server. */
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AUDIO_FORMAT src_format;
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/* Client supported formats. */
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AUDIO_FORMAT* client_formats;
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int num_client_formats;
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int selected_client_format;
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/* Last sent audio block number. */
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int block_no;
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/*** APIs called by the server. ***/
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/**
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* Initialize the channel. The caller should check the return value to see
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* whether the initialization succeed. If not, the "Activated" callback
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* will not be called and the server must not call any API on this context.
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*/
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psRdpsndServerInitialize Initialize;
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/**
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* Choose the audio format to be sent. The index argument is an index into
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* the client_formats array and must be smaller than num_client_formats.
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*/
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psRdpsndServerSelectFormat SelectFormat;
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/**
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* Send audio samples. Actually bytes in the buffer must be:
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* nframes * src_format.nBitsPerSample * src_format.nChannels / 8
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*/
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psRdpsndServerSendSamples SendSamples;
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/**
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* Called when block confirm is received from the client
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*/
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psRdpsndServerConfirmBlock ConfirmBlock;
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/**
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* Set the volume level of the client. Valid range is between 0 and 0xFFFF.
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*/
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psRdpsndServerSetVolume SetVolume;
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/**
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* Close the audio stream.
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*/
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psRdpsndServerClose Close;
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/*** Callbacks registered by the server. ***/
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/**
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* The channel has been activated. The server maybe choose audio format and
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* start audio stream from this point. Note that this callback is called
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* from a different thread context so the server must be careful of thread
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* synchronization.
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*/
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psRdpsndServerActivated Activated;
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/**
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* MS-RDPEA channel version the client announces
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*/
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UINT16 clientVersion;
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rdpContext* rdpcontext;
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};
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#ifdef __cplusplus
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extern "C" {
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#endif
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FREERDP_API RdpsndServerContext* rdpsnd_server_context_new(HANDLE vcm);
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FREERDP_API void rdpsnd_server_context_reset(RdpsndServerContext *);
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FREERDP_API void rdpsnd_server_context_free(RdpsndServerContext* context);
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FREERDP_API HANDLE rdpsnd_server_get_event_handle(RdpsndServerContext *context);
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FREERDP_API UINT rdpsnd_server_handle_messages(RdpsndServerContext *context);
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FREERDP_API UINT rdpsnd_server_send_formats(RdpsndServerContext* context, wStream* s);
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#ifdef __cplusplus
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}
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#endif
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#endif /* FREERDP_CHANNEL_RDPSND_SERVER_H */
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