| /* |
| 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" |
| |
| #if SDL_AUDIO_DRIVER_ANDROID |
| |
| /* Output audio to Android */ |
| |
| #include "SDL_assert.h" |
| #include "SDL_audio.h" |
| #include "../SDL_audio_c.h" |
| #include "SDL_androidaudio.h" |
| |
| #include "../../core/android/SDL_android.h" |
| |
| #include <android/log.h> |
| |
| static SDL_AudioDevice* audioDevice = NULL; |
| static SDL_AudioDevice* captureDevice = NULL; |
| |
| static int |
| ANDROIDAUDIO_OpenDevice(_THIS, void *handle, const char *devname, int iscapture) |
| { |
| SDL_AudioFormat test_format; |
| |
| SDL_assert((captureDevice == NULL) || !iscapture); |
| SDL_assert((audioDevice == NULL) || iscapture); |
| |
| if (iscapture) { |
| captureDevice = this; |
| } else { |
| audioDevice = this; |
| } |
| |
| this->hidden = (struct SDL_PrivateAudioData *) SDL_calloc(1, (sizeof *this->hidden)); |
| if (this->hidden == NULL) { |
| return SDL_OutOfMemory(); |
| } |
| |
| test_format = SDL_FirstAudioFormat(this->spec.format); |
| while (test_format != 0) { /* no "UNKNOWN" constant */ |
| if ((test_format == AUDIO_U8) || |
| (test_format == AUDIO_S16) || |
| (test_format == AUDIO_F32)) { |
| this->spec.format = test_format; |
| break; |
| } |
| test_format = SDL_NextAudioFormat(); |
| } |
| |
| if (test_format == 0) { |
| /* Didn't find a compatible format :( */ |
| return SDL_SetError("No compatible audio format!"); |
| } |
| |
| if (Android_JNI_OpenAudioDevice(iscapture, &this->spec) < 0) { |
| return -1; |
| } |
| |
| SDL_CalculateAudioSpec(&this->spec); |
| |
| return 0; |
| } |
| |
| static void |
| ANDROIDAUDIO_PlayDevice(_THIS) |
| { |
| Android_JNI_WriteAudioBuffer(); |
| } |
| |
| static Uint8 * |
| ANDROIDAUDIO_GetDeviceBuf(_THIS) |
| { |
| return Android_JNI_GetAudioBuffer(); |
| } |
| |
| static int |
| ANDROIDAUDIO_CaptureFromDevice(_THIS, void *buffer, int buflen) |
| { |
| return Android_JNI_CaptureAudioBuffer(buffer, buflen); |
| } |
| |
| static void |
| ANDROIDAUDIO_FlushCapture(_THIS) |
| { |
| Android_JNI_FlushCapturedAudio(); |
| } |
| |
| static void |
| ANDROIDAUDIO_CloseDevice(_THIS) |
| { |
| /* At this point SDL_CloseAudioDevice via close_audio_device took care of terminating the audio thread |
| so it's safe to terminate the Java side buffer and AudioTrack |
| */ |
| Android_JNI_CloseAudioDevice(this->iscapture); |
| if (this->iscapture) { |
| SDL_assert(captureDevice == this); |
| captureDevice = NULL; |
| } else { |
| SDL_assert(audioDevice == this); |
| audioDevice = NULL; |
| } |
| SDL_free(this->hidden); |
| } |
| |
| static int |
| ANDROIDAUDIO_Init(SDL_AudioDriverImpl * impl) |
| { |
| /* Set the function pointers */ |
| impl->OpenDevice = ANDROIDAUDIO_OpenDevice; |
| impl->PlayDevice = ANDROIDAUDIO_PlayDevice; |
| impl->GetDeviceBuf = ANDROIDAUDIO_GetDeviceBuf; |
| impl->CloseDevice = ANDROIDAUDIO_CloseDevice; |
| impl->CaptureFromDevice = ANDROIDAUDIO_CaptureFromDevice; |
| impl->FlushCapture = ANDROIDAUDIO_FlushCapture; |
| |
| /* and the capabilities */ |
| impl->HasCaptureSupport = SDL_TRUE; |
| impl->OnlyHasDefaultOutputDevice = 1; |
| impl->OnlyHasDefaultCaptureDevice = 1; |
| |
| return 1; /* this audio target is available. */ |
| } |
| |
| AudioBootStrap ANDROIDAUDIO_bootstrap = { |
| "android", "SDL Android audio driver", ANDROIDAUDIO_Init, 0 |
| }; |
| |
| /* Pause (block) all non already paused audio devices by taking their mixer lock */ |
| void ANDROIDAUDIO_PauseDevices(void) |
| { |
| /* TODO: Handle multiple devices? */ |
| struct SDL_PrivateAudioData *private; |
| if(audioDevice != NULL && audioDevice->hidden != NULL) { |
| private = (struct SDL_PrivateAudioData *) audioDevice->hidden; |
| if (SDL_AtomicGet(&audioDevice->paused)) { |
| /* The device is already paused, leave it alone */ |
| private->resume = SDL_FALSE; |
| } |
| else { |
| SDL_LockMutex(audioDevice->mixer_lock); |
| SDL_AtomicSet(&audioDevice->paused, 1); |
| private->resume = SDL_TRUE; |
| } |
| } |
| |
| if(captureDevice != NULL && captureDevice->hidden != NULL) { |
| private = (struct SDL_PrivateAudioData *) captureDevice->hidden; |
| if (SDL_AtomicGet(&captureDevice->paused)) { |
| /* The device is already paused, leave it alone */ |
| private->resume = SDL_FALSE; |
| } |
| else { |
| SDL_LockMutex(captureDevice->mixer_lock); |
| SDL_AtomicSet(&captureDevice->paused, 1); |
| private->resume = SDL_TRUE; |
| } |
| } |
| } |
| |
| /* Resume (unblock) all non already paused audio devices by releasing their mixer lock */ |
| void ANDROIDAUDIO_ResumeDevices(void) |
| { |
| /* TODO: Handle multiple devices? */ |
| struct SDL_PrivateAudioData *private; |
| if(audioDevice != NULL && audioDevice->hidden != NULL) { |
| private = (struct SDL_PrivateAudioData *) audioDevice->hidden; |
| if (private->resume) { |
| SDL_AtomicSet(&audioDevice->paused, 0); |
| private->resume = SDL_FALSE; |
| SDL_UnlockMutex(audioDevice->mixer_lock); |
| } |
| } |
| |
| if(captureDevice != NULL && captureDevice->hidden != NULL) { |
| private = (struct SDL_PrivateAudioData *) captureDevice->hidden; |
| if (private->resume) { |
| SDL_AtomicSet(&captureDevice->paused, 0); |
| private->resume = SDL_FALSE; |
| SDL_UnlockMutex(captureDevice->mixer_lock); |
| } |
| } |
| } |
| |
| #else |
| |
| void ANDROIDAUDIO_ResumeDevices(void) {} |
| void ANDROIDAUDIO_PauseDevices(void) {} |
| |
| #endif /* SDL_AUDIO_DRIVER_ANDROID */ |
| |
| /* vi: set ts=4 sw=4 expandtab: */ |
| |