diff options
Diffstat (limited to '3rdparty/SDL2/src/audio/SDL_sysaudio.h')
-rw-r--r-- | 3rdparty/SDL2/src/audio/SDL_sysaudio.h | 205 |
1 files changed, 0 insertions, 205 deletions
diff --git a/3rdparty/SDL2/src/audio/SDL_sysaudio.h b/3rdparty/SDL2/src/audio/SDL_sysaudio.h deleted file mode 100644 index 943169bf7c1..00000000000 --- a/3rdparty/SDL2/src/audio/SDL_sysaudio.h +++ /dev/null @@ -1,205 +0,0 @@ -/* - 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" - -#ifndef _SDL_sysaudio_h -#define _SDL_sysaudio_h - -#include "SDL_mutex.h" -#include "SDL_thread.h" - -/* !!! FIXME: These are wordy and unlocalized... */ -#define DEFAULT_OUTPUT_DEVNAME "System audio output device" -#define DEFAULT_INPUT_DEVNAME "System audio capture device" - -/* The SDL audio driver */ -typedef struct SDL_AudioDevice SDL_AudioDevice; -#define _THIS SDL_AudioDevice *_this - -/* Audio targets should call this as devices are added to the system (such as - a USB headset being plugged in), and should also be called for - for every device found during DetectDevices(). */ -extern void SDL_AddAudioDevice(const int iscapture, const char *name, void *handle); - -/* Audio targets should call this as devices are removed, so SDL can update - its list of available devices. */ -extern void SDL_RemoveAudioDevice(const int iscapture, void *handle); - -/* Audio targets should call this if an opened audio device is lost while - being used. This can happen due to i/o errors, or a device being unplugged, - etc. If the device is totally gone, please also call SDL_RemoveAudioDevice() - as appropriate so SDL's list of devices is accurate. */ -extern void SDL_OpenedAudioDeviceDisconnected(SDL_AudioDevice *device); - - -/* This is the size of a packet when using SDL_QueueAudio(). We allocate - these as necessary and pool them, under the assumption that we'll - eventually end up with a handful that keep recycling, meeting whatever - the app needs. We keep packing data tightly as more arrives to avoid - wasting space, and if we get a giant block of data, we'll split them - into multiple packets behind the scenes. My expectation is that most - apps will have 2-3 of these in the pool. 8k should cover most needs, but - if this is crippling for some embedded system, we can #ifdef this. - The system preallocates enough packets for 2 callbacks' worth of data. */ -#define SDL_AUDIOBUFFERQUEUE_PACKETLEN (8 * 1024) - -/* Used by apps that queue audio instead of using the callback. */ -typedef struct SDL_AudioBufferQueue -{ - Uint8 data[SDL_AUDIOBUFFERQUEUE_PACKETLEN]; /* packet data. */ - Uint32 datalen; /* bytes currently in use in this packet. */ - Uint32 startpos; /* bytes currently consumed in this packet. */ - struct SDL_AudioBufferQueue *next; /* next item in linked list. */ -} SDL_AudioBufferQueue; - -typedef struct SDL_AudioDriverImpl -{ - void (*DetectDevices) (void); - int (*OpenDevice) (_THIS, void *handle, const char *devname, int iscapture); - void (*ThreadInit) (_THIS); /* Called by audio thread at start */ - void (*WaitDevice) (_THIS); - void (*PlayDevice) (_THIS); - int (*GetPendingBytes) (_THIS); - Uint8 *(*GetDeviceBuf) (_THIS); - int (*CaptureFromDevice) (_THIS, void *buffer, int buflen); - void (*FlushCapture) (_THIS); - void (*PrepareToClose) (_THIS); /**< Called between run and draining wait for playback devices */ - void (*CloseDevice) (_THIS); - void (*LockDevice) (_THIS); - void (*UnlockDevice) (_THIS); - void (*FreeDeviceHandle) (void *handle); /**< SDL is done with handle from SDL_AddAudioDevice() */ - void (*Deinitialize) (void); - - /* !!! FIXME: add pause(), so we can optimize instead of mixing silence. */ - - /* Some flags to push duplicate code into the core and reduce #ifdefs. */ - /* !!! FIXME: these should be SDL_bool */ - int ProvidesOwnCallbackThread; - int SkipMixerLock; - int HasCaptureSupport; - int OnlyHasDefaultOutputDevice; - int OnlyHasDefaultCaptureDevice; - int AllowsArbitraryDeviceNames; -} SDL_AudioDriverImpl; - - -typedef struct SDL_AudioDeviceItem -{ - void *handle; - struct SDL_AudioDeviceItem *next; - #if (defined(__GNUC__) && (__GNUC__ <= 2)) - char name[1]; /* actually variable length. */ - #else - char name[]; - #endif -} SDL_AudioDeviceItem; - - -typedef struct SDL_AudioDriver -{ - /* * * */ - /* The name of this audio driver */ - const char *name; - - /* * * */ - /* The description of this audio driver */ - const char *desc; - - SDL_AudioDriverImpl impl; - - /* A mutex for device detection */ - SDL_mutex *detectionLock; - SDL_bool captureDevicesRemoved; - SDL_bool outputDevicesRemoved; - int outputDeviceCount; - int inputDeviceCount; - SDL_AudioDeviceItem *outputDevices; - SDL_AudioDeviceItem *inputDevices; -} SDL_AudioDriver; - - -/* Streamer */ -typedef struct -{ - Uint8 *buffer; - int max_len; /* the maximum length in bytes */ - int read_pos, write_pos; /* the position of the write and read heads in bytes */ -} SDL_AudioStreamer; - - -/* Define the SDL audio driver structure */ -struct SDL_AudioDevice -{ - /* * * */ - /* Data common to all devices */ - SDL_AudioDeviceID id; - - /* The current audio specification (shared with audio thread) */ - SDL_AudioSpec spec; - - /* An audio conversion block for audio format emulation */ - SDL_AudioCVT convert; - - /* The streamer, if sample rate conversion necessitates it */ - int use_streamer; - SDL_AudioStreamer streamer; - - /* Current state flags */ - SDL_atomic_t shutdown; /* true if we are signaling the play thread to end. */ - SDL_atomic_t enabled; /* true if device is functioning and connected. */ - SDL_atomic_t paused; - SDL_bool iscapture; - - /* Fake audio buffer for when the audio hardware is busy */ - Uint8 *fake_stream; - - /* A mutex for locking the mixing buffers */ - SDL_mutex *mixer_lock; - - /* A thread to feed the audio device */ - SDL_Thread *thread; - SDL_threadID threadid; - - /* Queued buffers (if app not using callback). */ - SDL_AudioBufferQueue *buffer_queue_head; /* device fed from here. */ - SDL_AudioBufferQueue *buffer_queue_tail; /* queue fills to here. */ - SDL_AudioBufferQueue *buffer_queue_pool; /* these are unused packets. */ - Uint32 queued_bytes; /* number of bytes of audio data in the queue. */ - - /* * * */ - /* Data private to this driver */ - struct SDL_PrivateAudioData *hidden; - - void *handle; -}; -#undef _THIS - -typedef struct AudioBootStrap -{ - const char *name; - const char *desc; - int (*init) (SDL_AudioDriverImpl * impl); - int demand_only; /* 1==request explicitly, or it won't be available. */ -} AudioBootStrap; - -#endif /* _SDL_sysaudio_h */ - -/* vi: set ts=4 sw=4 expandtab: */ |