| /* |
| Simple DirectMedia Layer |
| Copyright (C) 1997-2016 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_HAIKU |
| |
| /* Allow access to the audio stream on Haiku */ |
| |
| #include <SoundPlayer.h> |
| #include <signal.h> |
| |
| #include "../../main/haiku/SDL_BeApp.h" |
| |
| extern "C" |
| { |
| |
| #include "SDL_audio.h" |
| #include "../SDL_audio_c.h" |
| #include "../SDL_sysaudio.h" |
| #include "SDL_haikuaudio.h" |
| |
| } |
| |
| |
| /* !!! FIXME: have the callback call the higher level to avoid code dupe. */ |
| /* The Haiku callback for handling the audio buffer */ |
| static void |
| FillSound(void *device, void *stream, size_t len, |
| const media_raw_audio_format & format) |
| { |
| SDL_AudioDevice *audio = (SDL_AudioDevice *) device; |
| |
| /* Only do soemthing if audio is enabled */ |
| if (!SDL_AtomicGet(&audio->enabled)) { |
| return; |
| } |
| |
| if (!SDL_AtomicGet(&audio->paused)) { |
| if (audio->convert.needed) { |
| SDL_LockMutex(audio->mixer_lock); |
| (*audio->spec.callback) (audio->spec.userdata, |
| (Uint8 *) audio->convert.buf, |
| audio->convert.len); |
| SDL_UnlockMutex(audio->mixer_lock); |
| SDL_ConvertAudio(&audio->convert); |
| SDL_memcpy(stream, audio->convert.buf, audio->convert.len_cvt); |
| } else { |
| SDL_LockMutex(audio->mixer_lock); |
| (*audio->spec.callback) (audio->spec.userdata, |
| (Uint8 *) stream, len); |
| SDL_UnlockMutex(audio->mixer_lock); |
| } |
| } |
| } |
| |
| static void |
| HAIKUAUDIO_CloseDevice(_THIS) |
| { |
| if (_this->hidden->audio_obj) { |
| _this->hidden->audio_obj->Stop(); |
| delete _this->hidden->audio_obj; |
| } |
| delete _this->hidden; |
| } |
| |
| |
| static const int sig_list[] = { |
| SIGHUP, SIGINT, SIGQUIT, SIGPIPE, SIGALRM, SIGTERM, SIGWINCH, 0 |
| }; |
| |
| static inline void |
| MaskSignals(sigset_t * omask) |
| { |
| sigset_t mask; |
| int i; |
| |
| sigemptyset(&mask); |
| for (i = 0; sig_list[i]; ++i) { |
| sigaddset(&mask, sig_list[i]); |
| } |
| sigprocmask(SIG_BLOCK, &mask, omask); |
| } |
| |
| static inline void |
| UnmaskSignals(sigset_t * omask) |
| { |
| sigprocmask(SIG_SETMASK, omask, NULL); |
| } |
| |
| |
| static int |
| HAIKUAUDIO_OpenDevice(_THIS, void *handle, const char *devname, int iscapture) |
| { |
| int valid_datatype = 0; |
| media_raw_audio_format format; |
| SDL_AudioFormat test_format = SDL_FirstAudioFormat(_this->spec.format); |
| |
| /* Initialize all variables that we clean on shutdown */ |
| _this->hidden = new SDL_PrivateAudioData; |
| if (_this->hidden == NULL) { |
| return SDL_OutOfMemory(); |
| } |
| SDL_zerop(_this->hidden); |
| |
| /* Parse the audio format and fill the Be raw audio format */ |
| SDL_zero(format); |
| format.byte_order = B_MEDIA_LITTLE_ENDIAN; |
| format.frame_rate = (float) _this->spec.freq; |
| format.channel_count = _this->spec.channels; /* !!! FIXME: support > 2? */ |
| while ((!valid_datatype) && (test_format)) { |
| valid_datatype = 1; |
| _this->spec.format = test_format; |
| switch (test_format) { |
| case AUDIO_S8: |
| format.format = media_raw_audio_format::B_AUDIO_CHAR; |
| break; |
| |
| case AUDIO_U8: |
| format.format = media_raw_audio_format::B_AUDIO_UCHAR; |
| break; |
| |
| case AUDIO_S16LSB: |
| format.format = media_raw_audio_format::B_AUDIO_SHORT; |
| break; |
| |
| case AUDIO_S16MSB: |
| format.format = media_raw_audio_format::B_AUDIO_SHORT; |
| format.byte_order = B_MEDIA_BIG_ENDIAN; |
| break; |
| |
| case AUDIO_S32LSB: |
| format.format = media_raw_audio_format::B_AUDIO_INT; |
| break; |
| |
| case AUDIO_S32MSB: |
| format.format = media_raw_audio_format::B_AUDIO_INT; |
| format.byte_order = B_MEDIA_BIG_ENDIAN; |
| break; |
| |
| case AUDIO_F32LSB: |
| format.format = media_raw_audio_format::B_AUDIO_FLOAT; |
| break; |
| |
| case AUDIO_F32MSB: |
| format.format = media_raw_audio_format::B_AUDIO_FLOAT; |
| format.byte_order = B_MEDIA_BIG_ENDIAN; |
| break; |
| |
| default: |
| valid_datatype = 0; |
| test_format = SDL_NextAudioFormat(); |
| break; |
| } |
| } |
| |
| if (!valid_datatype) { /* shouldn't happen, but just in case... */ |
| return SDL_SetError("Unsupported audio format"); |
| } |
| |
| /* Calculate the final parameters for this audio specification */ |
| SDL_CalculateAudioSpec(&_this->spec); |
| |
| format.buffer_size = _this->spec.size; |
| |
| /* Subscribe to the audio stream (creates a new thread) */ |
| sigset_t omask; |
| MaskSignals(&omask); |
| _this->hidden->audio_obj = new BSoundPlayer(&format, "SDL Audio", |
| FillSound, NULL, _this); |
| UnmaskSignals(&omask); |
| |
| if (_this->hidden->audio_obj->Start() == B_NO_ERROR) { |
| _this->hidden->audio_obj->SetHasData(true); |
| } else { |
| return SDL_SetError("Unable to start Be audio"); |
| } |
| |
| /* We're running! */ |
| return 0; |
| } |
| |
| static void |
| HAIKUAUDIO_Deinitialize(void) |
| { |
| SDL_QuitBeApp(); |
| } |
| |
| static int |
| HAIKUAUDIO_Init(SDL_AudioDriverImpl * impl) |
| { |
| /* Initialize the Be Application, if it's not already started */ |
| if (SDL_InitBeApp() < 0) { |
| return 0; |
| } |
| |
| /* Set the function pointers */ |
| impl->OpenDevice = HAIKUAUDIO_OpenDevice; |
| impl->CloseDevice = HAIKUAUDIO_CloseDevice; |
| impl->Deinitialize = HAIKUAUDIO_Deinitialize; |
| impl->ProvidesOwnCallbackThread = 1; |
| impl->OnlyHasDefaultOutputDevice = 1; |
| |
| return 1; /* this audio target is available. */ |
| } |
| |
| extern "C" |
| { |
| extern AudioBootStrap HAIKUAUDIO_bootstrap; |
| } |
| AudioBootStrap HAIKUAUDIO_bootstrap = { |
| "haiku", "Haiku BSoundPlayer", HAIKUAUDIO_Init, 0 |
| }; |
| |
| #endif /* SDL_AUDIO_DRIVER_HAIKU */ |
| |
| /* vi: set ts=4 sw=4 expandtab: */ |