| /* |
| Simple DirectMedia Layer |
| Copyright (C) 1997-2014 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_audio.h" |
| #include "../SDL_audio_c.h" |
| #include "SDL_androidaudio.h" |
| |
| #include "../../core/android/SDL_android.h" |
| |
| #include <android/log.h> |
| |
| static void * audioDevice; |
| |
| static int |
| AndroidAUD_OpenDevice(_THIS, const char *devname, int iscapture) |
| { |
| SDL_AudioFormat test_format; |
| |
| if (iscapture) { |
| /* TODO: implement capture */ |
| return SDL_SetError("Capture not supported on Android"); |
| } |
| |
| if (audioDevice != NULL) { |
| return SDL_SetError("Only one audio device at a time please!"); |
| } |
| |
| audioDevice = this; |
| |
| test_format = SDL_FirstAudioFormat(this->spec.format); |
| while (test_format != 0) { /* no "UNKNOWN" constant */ |
| if ((test_format == AUDIO_U8) || (test_format == AUDIO_S16LSB)) { |
| 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 (this->spec.channels > 1) { |
| this->spec.channels = 2; |
| } else { |
| this->spec.channels = 1; |
| } |
| |
| if (this->spec.freq < 8000) { |
| this->spec.freq = 8000; |
| } |
| if (this->spec.freq > 48000) { |
| this->spec.freq = 48000; |
| } |
| |
| /* TODO: pass in/return a (Java) device ID, also whether we're opening for input or output */ |
| this->spec.samples = Android_JNI_OpenAudioDevice(this->spec.freq, this->spec.format == AUDIO_U8 ? 0 : 1, this->spec.channels, this->spec.samples); |
| SDL_CalculateAudioSpec(&this->spec); |
| |
| if (this->spec.samples == 0) { |
| /* Init failed? */ |
| return SDL_SetError("Java-side initialization failed!"); |
| } |
| |
| return 0; |
| } |
| |
| static void |
| AndroidAUD_PlayDevice(_THIS) |
| { |
| Android_JNI_WriteAudioBuffer(); |
| } |
| |
| static Uint8 * |
| AndroidAUD_GetDeviceBuf(_THIS) |
| { |
| return Android_JNI_GetAudioBuffer(); |
| } |
| |
| static void |
| AndroidAUD_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(); |
| |
| if (audioDevice == this) { |
| audioDevice = NULL; |
| } |
| } |
| |
| static int |
| AndroidAUD_Init(SDL_AudioDriverImpl * impl) |
| { |
| /* Set the function pointers */ |
| impl->OpenDevice = AndroidAUD_OpenDevice; |
| impl->PlayDevice = AndroidAUD_PlayDevice; |
| impl->GetDeviceBuf = AndroidAUD_GetDeviceBuf; |
| impl->CloseDevice = AndroidAUD_CloseDevice; |
| |
| /* and the capabilities */ |
| impl->HasCaptureSupport = 0; /* TODO */ |
| impl->OnlyHasDefaultOutputDevice = 1; |
| impl->OnlyHasDefaultInputDevice = 1; |
| |
| return 1; /* this audio target is available. */ |
| } |
| |
| AudioBootStrap ANDROIDAUD_bootstrap = { |
| "android", "SDL Android audio driver", AndroidAUD_Init, 0 |
| }; |
| |
| #endif /* SDL_AUDIO_DRIVER_ANDROID */ |
| |
| /* vi: set ts=4 sw=4 expandtab: */ |
| |