357 lines
8.8 KiB
C
357 lines
8.8 KiB
C
/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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* Audio Output Virtual Channel
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*
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* Copyright 2009-2012 Jay Sorg
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* Copyright 2010-2012 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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* Copyright 2016 David PHAM-VAN <d.phamvan@inuvika.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 <windows.h>
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#include <mmsystem.h>
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#include <winpr/crt.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/channels/log.h>
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#include "rdpsnd_main.h"
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typedef struct rdpsnd_winmm_plugin rdpsndWinmmPlugin;
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struct rdpsnd_winmm_plugin
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{
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rdpsndDevicePlugin device;
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HWAVEOUT hWaveOut;
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WAVEFORMATEX format;
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UINT32 volume;
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wLog* log;
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UINT32 latency;
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HANDLE hThread;
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DWORD threadId;
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CRITICAL_SECTION cs;
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};
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static BOOL rdpsnd_winmm_convert_format(const AUDIO_FORMAT* in, WAVEFORMATEX* out)
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{
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if (!in || !out)
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return FALSE;
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ZeroMemory(out, sizeof(WAVEFORMATEX));
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out->wFormatTag = WAVE_FORMAT_PCM;
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out->nChannels = in->nChannels;
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out->nSamplesPerSec = in->nSamplesPerSec;
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switch (in->wFormatTag)
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{
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case WAVE_FORMAT_PCM:
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out->wBitsPerSample = in->wBitsPerSample;
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break;
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default:
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return FALSE;
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}
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out->nBlockAlign = out->nChannels * out->wBitsPerSample / 8;
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out->nAvgBytesPerSec = out->nSamplesPerSec * out->nBlockAlign;
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return TRUE;
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}
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static BOOL rdpsnd_winmm_set_format(rdpsndDevicePlugin* device, const AUDIO_FORMAT* format,
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UINT32 latency)
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{
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rdpsndWinmmPlugin* winmm = (rdpsndWinmmPlugin*)device;
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winmm->latency = latency;
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if (!rdpsnd_winmm_convert_format(format, &winmm->format))
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return FALSE;
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return TRUE;
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}
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static DWORD WINAPI waveOutProc(LPVOID lpParameter)
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{
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MSG msg;
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rdpsndWinmmPlugin* winmm = (rdpsndWinmmPlugin*)lpParameter;
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while (GetMessage(&msg, NULL, 0, 0))
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{
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if (msg.message == MM_WOM_CLOSE)
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{
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/* device was closed - exit thread */
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break;
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}
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else if (msg.message == MM_WOM_DONE)
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{
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/* free buffer */
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LPWAVEHDR waveHdr = (LPWAVEHDR)msg.lParam;
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EnterCriticalSection(&winmm->cs);
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waveOutUnprepareHeader((HWAVEOUT)msg.wParam, waveHdr, sizeof(WAVEHDR));
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LeaveCriticalSection(&winmm->cs);
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free(waveHdr->lpData);
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free(waveHdr);
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}
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}
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return 0;
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}
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static BOOL rdpsnd_winmm_open(rdpsndDevicePlugin* device, const AUDIO_FORMAT* format,
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UINT32 latency)
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{
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MMRESULT mmResult;
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rdpsndWinmmPlugin* winmm = (rdpsndWinmmPlugin*)device;
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if (winmm->hWaveOut)
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return TRUE;
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if (!rdpsnd_winmm_set_format(device, format, latency))
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return FALSE;
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winmm->hThread = CreateThread(NULL, 0, waveOutProc, winmm, 0, &winmm->threadId);
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if (!winmm->hThread)
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{
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WLog_Print(winmm->log, WLOG_ERROR, "CreateThread failed: %" PRIu32 "", GetLastError());
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return FALSE;
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}
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mmResult = waveOutOpen(&winmm->hWaveOut, WAVE_MAPPER, &winmm->format,
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(DWORD_PTR)winmm->threadId, 0, CALLBACK_THREAD);
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if (mmResult != MMSYSERR_NOERROR)
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{
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WLog_Print(winmm->log, WLOG_ERROR, "waveOutOpen failed: %" PRIu32 "", mmResult);
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return FALSE;
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}
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mmResult = waveOutSetVolume(winmm->hWaveOut, winmm->volume);
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if (mmResult != MMSYSERR_NOERROR)
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{
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WLog_Print(winmm->log, WLOG_ERROR, "waveOutSetVolume failed: %" PRIu32 "", mmResult);
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return FALSE;
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}
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return TRUE;
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}
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static void rdpsnd_winmm_close(rdpsndDevicePlugin* device)
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{
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MMRESULT mmResult;
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rdpsndWinmmPlugin* winmm = (rdpsndWinmmPlugin*)device;
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if (winmm->hWaveOut)
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{
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EnterCriticalSection(&winmm->cs);
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mmResult = waveOutReset(winmm->hWaveOut);
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if (mmResult != MMSYSERR_NOERROR)
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WLog_Print(winmm->log, WLOG_ERROR, "waveOutReset failure: %" PRIu32 "", mmResult);
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mmResult = waveOutClose(winmm->hWaveOut);
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if (mmResult != MMSYSERR_NOERROR)
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WLog_Print(winmm->log, WLOG_ERROR, "waveOutClose failure: %" PRIu32 "", mmResult);
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LeaveCriticalSection(&winmm->cs);
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winmm->hWaveOut = NULL;
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}
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if (winmm->hThread)
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{
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WaitForSingleObject(winmm->hThread, INFINITE);
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CloseHandle(winmm->hThread);
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winmm->hThread = NULL;
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}
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}
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static void rdpsnd_winmm_free(rdpsndDevicePlugin* device)
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{
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rdpsndWinmmPlugin* winmm = (rdpsndWinmmPlugin*)device;
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if (winmm)
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{
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rdpsnd_winmm_close(device);
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DeleteCriticalSection(&winmm->cs);
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free(winmm);
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}
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}
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static BOOL rdpsnd_winmm_format_supported(rdpsndDevicePlugin* device, const AUDIO_FORMAT* format)
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{
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MMRESULT result;
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WAVEFORMATEX out;
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WINPR_UNUSED(device);
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if (rdpsnd_winmm_convert_format(format, &out))
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{
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result = waveOutOpen(NULL, WAVE_MAPPER, &out, 0, 0, WAVE_FORMAT_QUERY);
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if (result == MMSYSERR_NOERROR)
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return TRUE;
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}
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return FALSE;
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}
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static UINT32 rdpsnd_winmm_get_volume(rdpsndDevicePlugin* device)
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{
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MMRESULT mmResult;
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DWORD dwVolume = UINT32_MAX;
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rdpsndWinmmPlugin* winmm = (rdpsndWinmmPlugin*)device;
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if (!winmm->hWaveOut)
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return dwVolume;
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mmResult = waveOutGetVolume(winmm->hWaveOut, &dwVolume);
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if (mmResult != MMSYSERR_NOERROR)
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{
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WLog_Print(winmm->log, WLOG_ERROR, "waveOutGetVolume failure: %" PRIu32 "", mmResult);
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dwVolume = UINT32_MAX;
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}
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return dwVolume;
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}
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static BOOL rdpsnd_winmm_set_volume(rdpsndDevicePlugin* device, UINT32 value)
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{
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MMRESULT mmResult;
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rdpsndWinmmPlugin* winmm = (rdpsndWinmmPlugin*)device;
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winmm->volume = value;
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if (!winmm->hWaveOut)
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return TRUE;
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mmResult = waveOutSetVolume(winmm->hWaveOut, value);
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if (mmResult != MMSYSERR_NOERROR)
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{
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WLog_Print(winmm->log, WLOG_ERROR, "waveOutGetVolume failure: %" PRIu32 "", mmResult);
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return FALSE;
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}
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return TRUE;
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}
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static UINT rdpsnd_winmm_play(rdpsndDevicePlugin* device, const BYTE* data, size_t size)
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{
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MMRESULT mmResult;
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LPWAVEHDR lpWaveHdr;
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rdpsndWinmmPlugin* winmm = (rdpsndWinmmPlugin*)device;
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if (!winmm->hWaveOut)
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return 0;
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if (size > UINT32_MAX)
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return 0;
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lpWaveHdr = (LPWAVEHDR)calloc(1, sizeof(WAVEHDR));
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if (!lpWaveHdr)
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return 0;
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lpWaveHdr->dwFlags = 0;
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lpWaveHdr->dwLoops = 0;
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lpWaveHdr->lpData = malloc(size);
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if (!lpWaveHdr->lpData)
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goto fail;
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memcpy(lpWaveHdr->lpData, data, size);
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lpWaveHdr->dwBufferLength = (DWORD)size;
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EnterCriticalSection(&winmm->cs);
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mmResult = waveOutPrepareHeader(winmm->hWaveOut, lpWaveHdr, sizeof(WAVEHDR));
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if (mmResult != MMSYSERR_NOERROR)
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{
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WLog_Print(winmm->log, WLOG_ERROR, "waveOutPrepareHeader failure: %" PRIu32 "", mmResult);
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goto failCS;
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}
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mmResult = waveOutWrite(winmm->hWaveOut, lpWaveHdr, sizeof(WAVEHDR));
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if (mmResult != MMSYSERR_NOERROR)
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{
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WLog_Print(winmm->log, WLOG_ERROR, "waveOutWrite failure: %" PRIu32 "", mmResult);
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waveOutUnprepareHeader(winmm->hWaveOut, lpWaveHdr, sizeof(WAVEHDR));
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goto failCS;
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}
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LeaveCriticalSection(&winmm->cs);
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return winmm->latency;
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failCS:
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LeaveCriticalSection(&winmm->cs);
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fail:
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if (lpWaveHdr)
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free(lpWaveHdr->lpData);
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free(lpWaveHdr);
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return 0;
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}
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static void rdpsnd_winmm_parse_addin_args(rdpsndDevicePlugin* device, ADDIN_ARGV* args)
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{
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WINPR_UNUSED(device);
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WINPR_UNUSED(args);
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}
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#ifdef BUILTIN_CHANNELS
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#define freerdp_rdpsnd_client_subsystem_entry winmm_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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rdpsndWinmmPlugin* winmm;
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if (waveOutGetNumDevs() == 0)
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{
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WLog_Print(WLog_Get(TAG), WLOG_ERROR, "No sound playback device available!");
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return ERROR_DEVICE_NOT_AVAILABLE;
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}
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winmm = (rdpsndWinmmPlugin*)calloc(1, sizeof(rdpsndWinmmPlugin));
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if (!winmm)
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return CHANNEL_RC_NO_MEMORY;
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winmm->device.Open = rdpsnd_winmm_open;
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winmm->device.FormatSupported = rdpsnd_winmm_format_supported;
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winmm->device.GetVolume = rdpsnd_winmm_get_volume;
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winmm->device.SetVolume = rdpsnd_winmm_set_volume;
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winmm->device.Play = rdpsnd_winmm_play;
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winmm->device.Close = rdpsnd_winmm_close;
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winmm->device.Free = rdpsnd_winmm_free;
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winmm->log = WLog_Get(TAG);
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InitializeCriticalSection(&winmm->cs);
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args = pEntryPoints->args;
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rdpsnd_winmm_parse_addin_args((rdpsndDevicePlugin*)winmm, args);
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winmm->volume = 0xFFFFFFFF;
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pEntryPoints->pRegisterRdpsndDevice(pEntryPoints->rdpsnd, (rdpsndDevicePlugin*)winmm);
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return CHANNEL_RC_OK;
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}
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