diff options
Diffstat (limited to 'Source/3rdParty/SDL2/src/audio/SDL_audio.c')
| -rw-r--r-- | Source/3rdParty/SDL2/src/audio/SDL_audio.c | 111 |
1 files changed, 83 insertions, 28 deletions
diff --git a/Source/3rdParty/SDL2/src/audio/SDL_audio.c b/Source/3rdParty/SDL2/src/audio/SDL_audio.c index dcaebea..f4999f1 100644 --- a/Source/3rdParty/SDL2/src/audio/SDL_audio.c +++ b/Source/3rdParty/SDL2/src/audio/SDL_audio.c @@ -378,21 +378,57 @@ static int add_audio_device(const char *name, void *handle, SDL_AudioDeviceItem **devices, int *devCount) { int retval = -1; - const size_t size = sizeof (SDL_AudioDeviceItem) + SDL_strlen(name) + 1; - SDL_AudioDeviceItem *item = (SDL_AudioDeviceItem *) SDL_malloc(size); - if (item == NULL) { - return -1; - } + SDL_AudioDeviceItem *item; + const SDL_AudioDeviceItem *i; + int dupenum = 0; SDL_assert(handle != NULL); /* we reserve NULL, audio backends can't use it. */ + SDL_assert(name != NULL); + item = (SDL_AudioDeviceItem *) SDL_malloc(sizeof (SDL_AudioDeviceItem)); + if (!item) { + return SDL_OutOfMemory(); + } + + item->original_name = SDL_strdup(name); + if (!item->original_name) { + SDL_free(item); + return SDL_OutOfMemory(); + } + + item->dupenum = 0; + item->name = item->original_name; item->handle = handle; - SDL_strlcpy(item->name, name, size - sizeof (SDL_AudioDeviceItem)); SDL_LockMutex(current_audio.detectionLock); + + for (i = *devices; i != NULL; i = i->next) { + if (SDL_strcmp(name, i->original_name) == 0) { + dupenum = i->dupenum + 1; + break; /* stop at the highest-numbered dupe. */ + } + } + + if (dupenum) { + const size_t len = SDL_strlen(name) + 16; + char *replacement = (char *) SDL_malloc(len); + if (!replacement) { + SDL_UnlockMutex(current_audio.detectionLock); + SDL_free(item->original_name); + SDL_free(item); + SDL_OutOfMemory(); + return -1; + } + + SDL_snprintf(replacement, len, "%s (%d)", name, dupenum + 1); + item->dupenum = dupenum; + item->name = replacement; + } + item->next = *devices; *devices = item; - retval = (*devCount)++; + retval = (*devCount)++; /* !!! FIXME: this should be an atomic increment */ + SDL_UnlockMutex(current_audio.detectionLock); return retval; @@ -420,6 +456,11 @@ free_device_list(SDL_AudioDeviceItem **devices, int *devCount) if (item->handle != NULL) { current_audio.impl.FreeDeviceHandle(item->handle); } + /* these two pointers are the same if not a duplicate devname */ + if (item->name != item->original_name) { + SDL_free(item->name); + } + SDL_free(item->original_name); SDL_free(item); } *devices = NULL; @@ -451,7 +492,11 @@ void SDL_OpenedAudioDeviceDisconnected(SDL_AudioDevice *device) SDL_assert(get_audio_device(device->id) == device); if (!SDL_AtomicGet(&device->enabled)) { - return; + return; /* don't report disconnects more than once. */ + } + + if (SDL_AtomicGet(&device->shutdown)) { + return; /* don't report disconnect if we're trying to close device. */ } /* Ends the audio callback and mark the device as STOPPED, but the @@ -651,7 +696,7 @@ SDL_RunAudio(void *devicep) SDL_assert(!device->iscapture); /* The audio mixing is always a high priority thread */ - SDL_SetThreadPriority(SDL_THREAD_PRIORITY_HIGH); + SDL_SetThreadPriority(SDL_THREAD_PRIORITY_TIME_CRITICAL); /* Perform any thread setup */ device->threadid = SDL_ThreadID(); @@ -832,6 +877,8 @@ SDL_CaptureAudio(void *devicep) } } + current_audio.impl.PrepareToClose(device); + current_audio.impl.FlushCapture(device); current_audio.impl.ThreadDeinit(device); @@ -971,6 +1018,11 @@ clean_out_device_list(SDL_AudioDeviceItem **devices, int *devCount, SDL_bool *re } else { *devices = next; } + /* these two pointers are the same if not a duplicate devname */ + if (item->name != item->original_name) { + SDL_free(item->name); + } + SDL_free(item->original_name); SDL_free(item); } item = next; @@ -997,7 +1049,6 @@ SDL_GetNumAudioDevices(int iscapture) if (!iscapture && current_audio.outputDevicesRemoved) { clean_out_device_list(¤t_audio.outputDevices, ¤t_audio.outputDeviceCount, ¤t_audio.outputDevicesRemoved); - current_audio.outputDevicesRemoved = SDL_FALSE; } retval = iscapture ? current_audio.inputDeviceCount : current_audio.outputDeviceCount; @@ -1054,16 +1105,14 @@ close_audio_device(SDL_AudioDevice * device) return; } - if (device->id > 0) { - SDL_AudioDevice *opendev = open_devices[device->id - 1]; - SDL_assert((opendev == device) || (opendev == NULL)); - if (opendev == device) { - open_devices[device->id - 1] = NULL; - } - } - + /* make sure the device is paused before we do anything else, so the + audio callback definitely won't fire again. */ + current_audio.impl.LockDevice(device); + SDL_AtomicSet(&device->paused, 1); SDL_AtomicSet(&device->shutdown, 1); SDL_AtomicSet(&device->enabled, 0); + current_audio.impl.UnlockDevice(device); + if (device->thread != NULL) { SDL_WaitThread(device->thread, NULL); } @@ -1074,6 +1123,14 @@ close_audio_device(SDL_AudioDevice * device) SDL_free(device->work_buffer); SDL_FreeAudioStream(device->stream); + if (device->id > 0) { + SDL_AudioDevice *opendev = open_devices[device->id - 1]; + SDL_assert((opendev == device) || (opendev == NULL)); + if (opendev == device) { + open_devices[device->id - 1] = NULL; + } + } + if (device->hidden != NULL) { current_audio.impl.CloseDevice(device); } @@ -1118,8 +1175,9 @@ prepare_audiospec(const SDL_AudioSpec * orig, SDL_AudioSpec * prepared) } case 1: /* Mono */ case 2: /* Stereo */ - case 4: /* surround */ - case 6: /* surround with center and lfe */ + case 4: /* Quadrophonic */ + case 6: /* 5.1 surround */ + case 8: /* 7.1 surround */ break; default: SDL_SetError("Unsupported number of audio channels."); @@ -1312,15 +1370,12 @@ open_audio_device(const char *devname, int iscapture, build_stream = SDL_TRUE; } } - - /* !!! FIXME in 2.1: add SDL_AUDIO_ALLOW_SAMPLES_CHANGE flag? - As of 2.0.6, we will build a stream to buffer the difference between - what the app wants to feed and the device wants to eat, so everyone - gets their way. In prior releases, SDL would force the callback to - feed at the rate the device requested, adjusted for resampling. - */ if (device->spec.samples != obtained->samples) { - build_stream = SDL_TRUE; + if (allowed_changes & SDL_AUDIO_ALLOW_SAMPLES_CHANGE) { + obtained->samples = device->spec.samples; + } else { + build_stream = SDL_TRUE; + } } SDL_CalculateAudioSpec(obtained); /* recalc after possible changes. */ |