145 lines
3.8 KiB
C
145 lines
3.8 KiB
C
/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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* FreeRDP rdpsnd proxy subsystem
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*
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* Copyright 2019 Kobi Mizrachi <kmizrachi18@gmail.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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <winpr/crt.h>
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#include <winpr/stream.h>
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#include <winpr/cmdline.h>
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#include <winpr/sysinfo.h>
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#include <freerdp/types.h>
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#include <freerdp/server/rdpsnd.h>
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#include <freerdp/client/rdpsnd.h>
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#include "rdpsnd_main.h"
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#include "../../../../server/proxy/pf_context.h"
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typedef struct rdpsnd_proxy_plugin rdpsndProxyPlugin;
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struct rdpsnd_proxy_plugin
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{
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rdpsndDevicePlugin device;
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RdpsndServerContext* rdpsnd_server;
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};
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static BOOL rdpsnd_proxy_open(rdpsndDevicePlugin* device, const AUDIO_FORMAT* format,
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UINT32 latency)
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{
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rdpsndProxyPlugin* proxy = (rdpsndProxyPlugin*)device;
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/* update proxy's rdpsnd server latency */
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proxy->rdpsnd_server->latency = latency;
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return TRUE;
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}
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static void rdpsnd_proxy_close(rdpsndDevicePlugin* device)
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{
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/* do nothing */
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}
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static BOOL rdpsnd_proxy_set_volume(rdpsndDevicePlugin* device, UINT32 value)
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{
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rdpsndProxyPlugin* proxy = (rdpsndProxyPlugin*)device;
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proxy->rdpsnd_server->SetVolume(proxy->rdpsnd_server, value, value);
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return TRUE;
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}
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static void rdpsnd_proxy_free(rdpsndDevicePlugin* device)
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{
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rdpsndProxyPlugin* proxy = (rdpsndProxyPlugin*)device;
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if (!proxy)
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return;
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free(proxy);
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}
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static BOOL rdpsnd_proxy_format_supported(rdpsndDevicePlugin* device, const AUDIO_FORMAT* format)
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{
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rdpsndProxyPlugin* proxy = (rdpsndProxyPlugin*)device;
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/* use the same format that proxy's server used */
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if (proxy->rdpsnd_server->selected_client_format == format->wFormatTag)
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return TRUE;
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return FALSE;
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}
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static UINT rdpsnd_proxy_play(rdpsndDevicePlugin* device, const BYTE* data, size_t size)
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{
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rdpsndProxyPlugin* proxy = (rdpsndProxyPlugin*)device;
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UINT64 start = GetTickCount();
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proxy->rdpsnd_server->SendSamples(proxy->rdpsnd_server, data, size / 4, start);
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return GetTickCount() - start;
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}
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/**
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* Function description
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*
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* @return 0 on success, otherwise a Win32 error code
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*/
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#ifdef BUILTIN_CHANNELS
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#define freerdp_rdpsnd_client_subsystem_entry proxy_freerdp_rdpsnd_client_subsystem_entry
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#else
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#define freerdp_rdpsnd_client_subsystem_entry FREERDP_API freerdp_rdpsnd_client_subsystem_entry
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#endif
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/**
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* Function description
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*
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* @return 0 on success, otherwise a Win32 error code
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*/
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UINT freerdp_rdpsnd_client_subsystem_entry(PFREERDP_RDPSND_DEVICE_ENTRY_POINTS pEntryPoints)
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{
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ADDIN_ARGV* args;
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rdpsndProxyPlugin* proxy;
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pClientContext* pc;
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proxy = (rdpsndProxyPlugin*)calloc(1, sizeof(rdpsndProxyPlugin));
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if (!proxy)
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return CHANNEL_RC_NO_MEMORY;
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proxy->device.Open = rdpsnd_proxy_open;
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proxy->device.FormatSupported = rdpsnd_proxy_format_supported;
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proxy->device.SetVolume = rdpsnd_proxy_set_volume;
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proxy->device.Play = rdpsnd_proxy_play;
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proxy->device.Close = rdpsnd_proxy_close;
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proxy->device.Free = rdpsnd_proxy_free;
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args = pEntryPoints->args;
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pEntryPoints->pRegisterRdpsndDevice(pEntryPoints->rdpsnd, &proxy->device);
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pc = (pClientContext*)freerdp_rdpsnd_get_context(pEntryPoints->rdpsnd);
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if (pc == NULL)
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{
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free(proxy);
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return ERROR_INTERNAL_ERROR;
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}
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proxy->rdpsnd_server = pc->pdata->ps->rdpsnd;
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return CHANNEL_RC_OK;
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}
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