| /* |
| Simple DirectMedia Layer |
| Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org> |
| |
| This software is provided 'as-is', without any express or implied |
| warranty. In no event will the authors be held liable for any damages |
| arising from the use of this software. |
| |
| Permission is granted to anyone to use this software for any purpose, |
| including commercial applications, and to alter it and redistribute it |
| freely, subject to the following restrictions: |
| |
| 1. The origin of this software must not be misrepresented; you must not |
| claim that you wrote the original software. If you use this software |
| in a product, an acknowledgment in the product documentation would be |
| appreciated but is not required. |
| 2. Altered source versions must be plainly marked as such, and must not be |
| misrepresented as being the original software. |
| 3. This notice may not be removed or altered from any source distribution. |
| */ |
| #include "../../SDL_internal.h" |
| |
| /* Output audio to nowhere... */ |
| |
| #include "SDL_timer.h" |
| #include "SDL_audio.h" |
| #include "../SDL_audio_c.h" |
| #include "SDL_dummyaudio.h" |
| |
| static int |
| DUMMYAUDIO_OpenDevice(_THIS, void *handle, const char *devname, int iscapture) |
| { |
| return 0; /* always succeeds. */ |
| } |
| |
| static int |
| DUMMYAUDIO_CaptureFromDevice(_THIS, void *buffer, int buflen) |
| { |
| /* Delay to make this sort of simulate real audio input. */ |
| SDL_Delay((this->spec.samples * 1000) / this->spec.freq); |
| |
| /* always return a full buffer of silence. */ |
| SDL_memset(buffer, this->spec.silence, buflen); |
| return buflen; |
| } |
| |
| static int |
| DUMMYAUDIO_Init(SDL_AudioDriverImpl * impl) |
| { |
| /* Set the function pointers */ |
| impl->OpenDevice = DUMMYAUDIO_OpenDevice; |
| impl->CaptureFromDevice = DUMMYAUDIO_CaptureFromDevice; |
| |
| impl->OnlyHasDefaultOutputDevice = 1; |
| impl->OnlyHasDefaultCaptureDevice = 1; |
| impl->HasCaptureSupport = SDL_TRUE; |
| |
| return 1; /* this audio target is available. */ |
| } |
| |
| AudioBootStrap DUMMYAUDIO_bootstrap = { |
| "dummy", "SDL dummy audio driver", DUMMYAUDIO_Init, 1 |
| }; |
| |
| /* vi: set ts=4 sw=4 expandtab: */ |