/** * FreeRDP: A Remote Desktop Protocol Implementation * Audio Output Virtual Channel * * Copyright 2019 Armin Novak * Copyright 2019 Thincast Technologies GmbH * * 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. */ #include #include #include #include #include #include #include #include #include #include "rdpsnd_main.h" typedef struct { rdpsndDevicePlugin device; } rdpsndFakePlugin; static BOOL rdpsnd_fake_open(rdpsndDevicePlugin* device, const AUDIO_FORMAT* format, UINT32 latency) { return TRUE; } static void rdpsnd_fake_close(rdpsndDevicePlugin* device) { } static BOOL rdpsnd_fake_set_volume(rdpsndDevicePlugin* device, UINT32 value) { return TRUE; } static void rdpsnd_fake_free(rdpsndDevicePlugin* device) { rdpsndFakePlugin* fake = (rdpsndFakePlugin*)device; if (!fake) return; free(fake); } static BOOL rdpsnd_fake_format_supported(rdpsndDevicePlugin* device, const AUDIO_FORMAT* format) { return TRUE; } static UINT rdpsnd_fake_play(rdpsndDevicePlugin* device, const BYTE* data, size_t size) { return CHANNEL_RC_OK; } /** * Function description * * @return 0 on success, otherwise a Win32 error code */ static UINT rdpsnd_fake_parse_addin_args(rdpsndFakePlugin* fake, const ADDIN_ARGV* args) { int status = 0; DWORD flags = 0; const COMMAND_LINE_ARGUMENT_A* arg = NULL; COMMAND_LINE_ARGUMENT_A rdpsnd_fake_args[] = { { NULL, 0, NULL, NULL, NULL, -1, NULL, NULL } }; flags = COMMAND_LINE_SIGIL_NONE | COMMAND_LINE_SEPARATOR_COLON | COMMAND_LINE_IGN_UNKNOWN_KEYWORD; status = CommandLineParseArgumentsA(args->argc, args->argv, rdpsnd_fake_args, flags, fake, NULL, NULL); if (status < 0) return ERROR_INVALID_DATA; arg = rdpsnd_fake_args; do { if (!(arg->Flags & COMMAND_LINE_VALUE_PRESENT)) continue; CommandLineSwitchStart(arg) CommandLineSwitchEnd(arg) } while ((arg = CommandLineFindNextArgumentA(arg)) != NULL); return CHANNEL_RC_OK; } /** * Function description * * @return 0 on success, otherwise a Win32 error code */ FREERDP_ENTRY_POINT(UINT fake_freerdp_rdpsnd_client_subsystem_entry( PFREERDP_RDPSND_DEVICE_ENTRY_POINTS pEntryPoints)) { const ADDIN_ARGV* args = NULL; rdpsndFakePlugin* fake = NULL; UINT ret = CHANNEL_RC_OK; fake = (rdpsndFakePlugin*)calloc(1, sizeof(rdpsndFakePlugin)); if (!fake) return CHANNEL_RC_NO_MEMORY; fake->device.Open = rdpsnd_fake_open; fake->device.FormatSupported = rdpsnd_fake_format_supported; fake->device.SetVolume = rdpsnd_fake_set_volume; fake->device.Play = rdpsnd_fake_play; fake->device.Close = rdpsnd_fake_close; fake->device.Free = rdpsnd_fake_free; args = pEntryPoints->args; if (args->argc > 1) { ret = rdpsnd_fake_parse_addin_args(fake, args); if (ret != CHANNEL_RC_OK) { WLog_ERR(TAG, "error parsing arguments"); goto error; } } pEntryPoints->pRegisterRdpsndDevice(pEntryPoints->rdpsnd, &fake->device); return ret; error: rdpsnd_fake_free(&fake->device); return ret; }