147 lines
4.2 KiB
C
147 lines
4.2 KiB
C
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is libguac-client-rdp.
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*
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* The Initial Developer of the Original Code is
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* Michael Jumper.
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* Portions created by the Initial Developer are Copyright (C) 2011
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef __GUAC_RDPSND_SERVICE_H
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#define __GUAC_RDPSND_SERVICE_H
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/**
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* The maximum number of PCM formats to accept during the initial RDPSND
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* handshake with the RDP server.
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*/
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#define GUAC_RDP_MAX_FORMATS 16
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/**
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* Abstract representation of a PCM format, including the sample rate, number
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* of channels, and bits per sample.
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*/
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typedef struct guac_pcm_format {
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/**
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* The sample rate of this PCM format.
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*/
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int rate;
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/**
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* The number off channels used by this PCM format. This will typically
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* be 1 or 2.
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*/
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int channels;
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/**
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* The number of bits per sample within this PCM format. This should be
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* either 8 or 16.
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*/
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int bps;
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} guac_pcm_format;
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/**
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* Structure representing the current state of the Guacamole RDPSND plugin for
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* FreeRDP.
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*/
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typedef struct guac_rdpsndPlugin {
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/**
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* The FreeRDP parts of this plugin. This absolutely MUST be first.
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* FreeRDP depends on accessing this structure as if it were an instance
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* of rdpSvcPlugin.
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*/
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rdpSvcPlugin plugin;
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/**
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* The block number of the last SNDC_WAVE (WaveInfo) PDU received.
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*/
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int waveinfo_block_number;
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/**
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* Whether the next PDU coming is a SNDWAVE (Wave) PDU. Wave PDUs do not
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* have headers, and are indicated by the receipt of a WaveInfo PDU.
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*/
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int next_pdu_is_wave;
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/**
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* The size, in bytes, of the wave data in the coming Wave PDU, if any.
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*/
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int incoming_wave_size;
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/**
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* The last received server timestamp.
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*/
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int server_timestamp;
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/**
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* All formats agreed upon by server and client during the initial format
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* exchange. All of these formats will be PCM, which is the only format
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* guaranteed to be supported (based on the official RDP documentation).
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*/
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guac_pcm_format formats[GUAC_RDP_MAX_FORMATS];
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/**
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* The total number of formats.
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*/
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int format_count;
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} guac_rdpsndPlugin;
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/**
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* Handler called when this plugin is loaded by FreeRDP.
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*/
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void guac_rdpsnd_process_connect(rdpSvcPlugin* plugin);
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/**
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* Handler called when this plugin receives data along its designated channel.
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*/
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void guac_rdpsnd_process_receive(rdpSvcPlugin* plugin,
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STREAM* input_stream);
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/**
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* Handler called when this plugin is being unloaded.
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*/
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void guac_rdpsnd_process_terminate(rdpSvcPlugin* plugin);
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/**
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* Handler called when this plugin receives an event. For the sake of RDPSND,
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* all events will be ignored and simply free'd.
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*/
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void guac_rdpsnd_process_event(rdpSvcPlugin* plugin, RDP_EVENT* event);
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#endif
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