Android: add AAudio back-end, with playback and capture (see #3710)

https://developer.android.com/ndk/guides/audio/aaudio/aaudio

src/audio/aaudio/SDL_aaudio.c

@@ -0,0 +1,415 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2021 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_AAUDIO
+
+#include "SDL_audio.h"
+#include "SDL_loadso.h"
+#include "../SDL_audio_c.h"
+#include "../../core/android/SDL_android.h"
+#include "SDL_aaudio.h"
+
+/* Debug */
+#if 0
+#  define LOGI(...) SDL_Log(__VA_ARGS__);
+#else
+#  define LOGI(...)
+#endif
+
+typedef struct AAUDIO_Data
+{
+    AAudioStreamBuilder *builder;
+    void *handle;
+#define SDL_PROC(ret,func,params) ret (*func) params;
+#  include "SDL_aaudiofuncs.h"
+#undef SDL_PROC
+} AAUDIO_Data;
+static AAUDIO_Data ctx;
+
+static SDL_AudioDevice *audioDevice = NULL;
+static SDL_AudioDevice *captureDevice = NULL;
+
+static int aaudio_LoadFunctions(AAUDIO_Data *data)
+{
+#define SDL_PROC(ret,func,params)                                                                   \
+    do {                                                                                            \
+        data->func = SDL_LoadFunction(data->handle, #func);                                         \
+        if (! data->func) {                                                                         \
+            return SDL_SetError("Couldn't load AAUDIO function %s: %s", #func, SDL_GetError());     \
+        }                                                                                           \
+    } while (0);
+#include "SDL_aaudiofuncs.h"
+#undef SDL_PROC
+    return 0;
+}
+
+#define LIB_AAUDIO_SO "libaaudio.so"
+
+static int
+aaudio_OpenDevice(_THIS, void *handle, const char *devname, int iscapture)
+{
+    struct SDL_PrivateAudioData *private;
+    aaudio_result_t res;
+    LOGI(__func__);
+
+    SDL_assert((captureDevice == NULL) || !iscapture);
+    SDL_assert((audioDevice == NULL) || iscapture);
+
+    if (iscapture) {
+        if (!Android_JNI_RequestPermission("android.permission.RECORD_AUDIO")) {
+            LOGI("This app doesn't have RECORD_AUDIO permission");
+            return SDL_SetError("This app doesn't have RECORD_AUDIO permission");
+        }
+    }
+
+    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();
+    }
+    private = this->hidden;
+
+    ctx.AAudioStreamBuilder_setSampleRate(ctx.builder, this->spec.freq);
+    ctx.AAudioStreamBuilder_setChannelCount(ctx.builder, this->spec.channels);
+    {
+        aaudio_direction_t direction = (iscapture ? AAUDIO_DIRECTION_INPUT : AAUDIO_DIRECTION_OUTPUT);
+        ctx.AAudioStreamBuilder_setDirection(ctx.builder, direction);
+    }
+    {
+        aaudio_format_t format = AAUDIO_FORMAT_PCM_FLOAT;
+        if (this->spec.format == AUDIO_S16SYS) {
+            format = AAUDIO_FORMAT_PCM_I16;
+        } else if (this->spec.format == AUDIO_S16SYS) {
+            format = AAUDIO_FORMAT_PCM_FLOAT;
+        }
+        ctx.AAudioStreamBuilder_setFormat(ctx.builder, format);
+    }
+
+    LOGI("AAudio Try to open %u hz %u bit chan %u %s samples %u",
+          this->spec.freq, SDL_AUDIO_BITSIZE(this->spec.format),
+          this->spec.channels, (this->spec.format & 0x1000) ? "BE" : "LE", this->spec.samples);
+
+    res = ctx.AAudioStreamBuilder_openStream(ctx.builder, &private->stream);
+    if (res != AAUDIO_OK) {
+        LOGI("SDL Failed AAudioStreamBuilder_openStream %d", res);
+        return SDL_SetError("%s : %s", __func__, ctx.AAudio_convertResultToText(res));
+    }
+
+    this->spec.freq = ctx.AAudioStream_getSampleRate(private->stream);
+    this->spec.channels = ctx.AAudioStream_getChannelCount(private->stream);
+    {
+        aaudio_format_t fmt = ctx.AAudioStream_getFormat(private->stream);
+        if (fmt == AAUDIO_FORMAT_PCM_I16) {
+            this->spec.format = AUDIO_S16SYS;
+        } else if (fmt == AAUDIO_FORMAT_PCM_FLOAT) {
+            this->spec.format = AUDIO_F32SYS;
+        }
+    }
+
+    LOGI("AAudio Try to open %u hz %u bit chan %u %s samples %u",
+          this->spec.freq, SDL_AUDIO_BITSIZE(this->spec.format),
+          this->spec.channels, (this->spec.format & 0x1000) ? "BE" : "LE", this->spec.samples);
+
+    SDL_CalculateAudioSpec(&this->spec);
+
+    /* Allocate mixing buffer */
+    if (!iscapture) {
+        private->mixlen = this->spec.size;
+        private->mixbuf = (Uint8 *) SDL_malloc(private->mixlen);
+        if (private->mixbuf == NULL) {
+            return SDL_OutOfMemory();
+        }
+        SDL_memset(private->mixbuf, this->spec.silence, this->spec.size);
+    }
+
+    private->frame_size = this->spec.channels * (SDL_AUDIO_BITSIZE(this->spec.format) / 8);
+
+    res = ctx.AAudioStream_requestStart(private->stream);
+    if (res != AAUDIO_OK) {
+        LOGI("SDL Failed AAudioStream_requestStart %d iscapture:%d", res, iscapture);
+        return SDL_SetError("%s : %s", __func__, ctx.AAudio_convertResultToText(res));
+    }
+
+    LOGI("SDL AAudioStream_requestStart OK");
+    return 0;
+}
+
+static void
+aaudio_CloseDevice(_THIS)
+{
+    struct SDL_PrivateAudioData *private = this->hidden;
+    aaudio_result_t res;
+    LOGI(__func__);
+
+    res = ctx.AAudioStream_requestStop(private->stream);
+    if (res != AAUDIO_OK) {
+        LOGI("SDL Failed AAudioStream_requestStop %d", res);
+        SDL_SetError("%s : %s", __func__, ctx.AAudio_convertResultToText(res));
+        return;
+    }
+
+    res = ctx.AAudioStream_close(private->stream);
+    if (res != AAUDIO_OK) {
+        LOGI("SDL Failed AAudioStreamBuilder_delete %d", res);
+        SDL_SetError("%s : %s", __func__, ctx.AAudio_convertResultToText(res));
+        return;
+    }
+
+    if (this->iscapture) {
+        SDL_assert(captureDevice == this);
+        captureDevice = NULL;
+    } else {
+        SDL_assert(audioDevice == this);
+        audioDevice = NULL;
+    }
+
+    SDL_free(this->hidden->mixbuf);
+    SDL_free(this->hidden);
+}
+
+static Uint8 *
+aaudio_GetDeviceBuf(_THIS)
+{
+    struct SDL_PrivateAudioData *private = this->hidden;
+    return private->mixbuf;
+}
+
+static void
+aaudio_PlayDevice(_THIS)
+{
+    struct SDL_PrivateAudioData *private = this->hidden;
+    aaudio_result_t res;
+    int64_t timeoutNanoseconds = 1 * 1000 * 1000; /* 8 ms */
+    res = ctx.AAudioStream_write(private->stream,  private->mixbuf, private->mixlen / private->frame_size, timeoutNanoseconds);
+    if (res < 0) {
+        LOGI("%s : %s", __func__, ctx.AAudio_convertResultToText(res));
+    } else {
+        LOGI("SDL AAudio play: %d frames, wanted:%d frames", (int)res, private->mixlen / private->frame_size);
+    }
+
+#if 0
+    /* Log under-run count */
+    {
+        static int prev = 0;
+        int32_t cnt = ctx.AAudioStream_getXRunCount(private->stream);
+        if (cnt != prev) {
+            SDL_Log("AAudio underrun: %d - total: %d", cnt - prev, cnt);
+            prev = cnt;
+        }
+    }
+#endif
+}
+
+static int
+aaudio_CaptureFromDevice(_THIS, void *buffer, int buflen)
+{
+    struct SDL_PrivateAudioData *private = this->hidden;
+    aaudio_result_t res;
+    int64_t timeoutNanoseconds = 8 * 1000 * 1000; /* 8 ms */
+    res = ctx.AAudioStream_read(private->stream,  buffer, buflen / private->frame_size, timeoutNanoseconds);
+    if (res < 0) {
+        LOGI("%s : %s", __func__, ctx.AAudio_convertResultToText(res));
+        return -1;
+    }
+    LOGI("SDL AAudio capture:%d frames, wanted:%d frames", (int)res, buflen / private->frame_size);
+    return res * private->frame_size;
+}
+
+static void
+aaudio_Deinitialize(void)
+{
+    LOGI(__func__);
+    if (ctx.handle) {
+        if (ctx.builder) {
+            aaudio_result_t res;
+            res = ctx.AAudioStreamBuilder_delete(ctx.builder);
+            if (res != AAUDIO_OK) {
+                SDL_SetError("Failed AAudioStreamBuilder_delete %s", ctx.AAudio_convertResultToText(res));
+            }
+        }
+        SDL_UnloadObject(ctx.handle);
+    }
+    ctx.handle = NULL;
+    ctx.builder = NULL;
+    LOGI("End AAUDIO %s", SDL_GetError());
+}
+
+static int
+aaudio_Init(SDL_AudioDriverImpl *impl)
+{
+    aaudio_result_t res;
+    LOGI(__func__);
+
+    SDL_zero(ctx);
+
+    ctx.handle = SDL_LoadObject(LIB_AAUDIO_SO);
+    if (ctx.handle == NULL) {
+        LOGI("SDL Failed to found " LIB_AAUDIO_SO);
+        goto failure;
+    }
+
+    if (aaudio_LoadFunctions(&ctx) < 0) {
+        goto failure;
+    }
+
+    res = ctx.AAudio_createStreamBuilder(&ctx.builder);
+    if (res != AAUDIO_OK) {
+        LOGI("SDL Failed AAudio_createStreamBuilder %d", res);
+        goto failure;
+    }
+
+    if (ctx.builder == NULL) {
+        LOGI("SDL Failed AAudio_createStreamBuilder - builder NULL");
+        goto failure;
+    }
+
+    impl->Deinitialize = aaudio_Deinitialize;
+    impl->OpenDevice = aaudio_OpenDevice;
+    impl->CloseDevice = aaudio_CloseDevice;
+    impl->PlayDevice = aaudio_PlayDevice;
+    impl->GetDeviceBuf = aaudio_GetDeviceBuf;
+    impl->CaptureFromDevice = aaudio_CaptureFromDevice;
+
+    /* and the capabilities */
+    impl->HasCaptureSupport = SDL_TRUE;
+    impl->OnlyHasDefaultOutputDevice = 1;
+    impl->OnlyHasDefaultCaptureDevice = 1;
+
+    /* this audio target is available. */
+    LOGI("SDL aaudio_Init OK");
+    return 1;
+
+failure:
+    if (ctx.handle) {
+        if (ctx.builder) {
+            ctx.AAudioStreamBuilder_delete(ctx.builder);
+        }
+        SDL_UnloadObject(ctx.handle);
+    }
+    ctx.handle = NULL;
+    ctx.builder = NULL;
+    return 0;
+}
+
+AudioBootStrap aaudio_bootstrap = {
+    "AAudio", "AAudio audio driver", aaudio_Init, 0
+};
+
+/* Pause (block) all non already paused audio devices by taking their mixer lock */
+void aaudio_PauseDevices(void)
+{
+    /* TODO: Handle multiple devices? */
+    struct SDL_PrivateAudioData *private;
+    if (audioDevice != NULL && audioDevice->hidden != NULL) {
+        private = (struct SDL_PrivateAudioData *) audioDevice->hidden;
+
+        if (private->stream) {
+            aaudio_result_t res = ctx.AAudioStream_requestPause(private->stream);
+            if (res != AAUDIO_OK) {
+                LOGI("SDL Failed AAudioStream_requestPause %d", res);
+                SDL_SetError("%s : %s", __func__, ctx.AAudio_convertResultToText(res));
+            }
+        }
+
+        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 (private->stream) {
+            /* Pause() isn't implemented for 'capture', use Stop() */
+            aaudio_result_t res = ctx.AAudioStream_requestStop(private->stream);
+            if (res != AAUDIO_OK) {
+                LOGI("SDL Failed AAudioStream_requestStop %d", res);
+                SDL_SetError("%s : %s", __func__, ctx.AAudio_convertResultToText(res));
+            }
+        }
+
+        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 aaudio_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 (private->stream) {
+            aaudio_result_t res = ctx.AAudioStream_requestStart(private->stream);
+            if (res != AAUDIO_OK) {
+                LOGI("SDL Failed AAudioStream_requestStart %d", res);
+                SDL_SetError("%s : %s", __func__, ctx.AAudio_convertResultToText(res));
+            }
+        }
+    }
+
+    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);
+        }
+
+        if (private->stream) {
+            aaudio_result_t res = ctx.AAudioStream_requestStart(private->stream);
+            if (res != AAUDIO_OK) {
+                LOGI("SDL Failed AAudioStream_requestStart %d", res);
+                SDL_SetError("%s : %s", __func__, ctx.AAudio_convertResultToText(res));
+            }
+        }
+    }
+}
+
+#endif /* SDL_AUDIO_DRIVER_AAUDIO */
+
+/* vi: set ts=4 sw=4 expandtab: */

src/audio/aaudio/SDL_aaudio.h

@@ -0,0 +1,51 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2021 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_aaudio_h
+#define _SDL_aaudio_h
+
+#include "../SDL_sysaudio.h"
+#include <aaudio/AAudio.h>
+
+/* Hidden "this" pointer for the audio functions */
+#define _THIS   SDL_AudioDevice *this
+
+struct SDL_PrivateAudioData
+{
+    AAudioStream *stream;
+
+    /* Raw mixing buffer */
+    Uint8 *mixbuf;
+    int mixlen;
+    int frame_size;
+
+    /* Resume device if it was paused automatically */
+    int resume;
+};
+ 
+void aaudio_ResumeDevices(void);
+void aaudio_PauseDevices(void);
+
+
+#endif /* _SDL_aaudio_h */
+
+/* vi: set ts=4 sw=4 expandtab: */

src/audio/aaudio/SDL_aaudiofuncs.h

@@ -0,0 +1,80 @@
+/*
+  Simple DirectMedia Layer
+  Copyright , (C) 1997-2021 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.
+*/
+
+#define SDL_PROC_UNUSED(ret,func,params)
+
+SDL_PROC(const char *, AAudio_convertResultToText, (aaudio_result_t returnCode))
+SDL_PROC_UNUSED(const char *, AAudio_convertStreamStateToText, (aaudio_stream_state_t state))
+SDL_PROC(aaudio_result_t, AAudio_createStreamBuilder, (AAudioStreamBuilder** builder))
+SDL_PROC_UNUSED(void, AAudioStreamBuilder_setDeviceId, (AAudioStreamBuilder* builder, int32_t deviceId))
+SDL_PROC(void, AAudioStreamBuilder_setSampleRate, (AAudioStreamBuilder* builder, int32_t sampleRate))
+SDL_PROC(void, AAudioStreamBuilder_setChannelCount, (AAudioStreamBuilder* builder, int32_t channelCount))
+SDL_PROC_UNUSED(void, AAudioStreamBuilder_setSamplesPerFrame, (AAudioStreamBuilder* builder, int32_t samplesPerFrame))
+SDL_PROC(void, AAudioStreamBuilder_setFormat, (AAudioStreamBuilder* builder, aaudio_format_t format))
+SDL_PROC_UNUSED(void, AAudioStreamBuilder_setSharingMode, (AAudioStreamBuilder* builder, aaudio_sharing_mode_t sharingMode))
+SDL_PROC(void, AAudioStreamBuilder_setDirection, (AAudioStreamBuilder* builder, aaudio_direction_t direction))
+SDL_PROC_UNUSED(void, AAudioStreamBuilder_setBufferCapacityInFrames, (AAudioStreamBuilder* builder, int32_t numFrames))
+SDL_PROC_UNUSED(void, AAudioStreamBuilder_setPerformanceMode, (AAudioStreamBuilder* builder, aaudio_performance_mode_t mode))
+SDL_PROC_UNUSED(void, AAudioStreamBuilder_setUsage, (AAudioStreamBuilder* builder, aaudio_usage_t usage)) /* API 28 */
+SDL_PROC_UNUSED(void, AAudioStreamBuilder_setContentType, (AAudioStreamBuilder* builder, aaudio_content_type_t contentType)) /* API 28 */
+SDL_PROC_UNUSED(void, AAudioStreamBuilder_setInputPreset, (AAudioStreamBuilder* builder, aaudio_input_preset_t inputPreset)) /* API 28 */
+SDL_PROC_UNUSED(void, AAudioStreamBuilder_setAllowedCapturePolicy, (AAudioStreamBuilder* builder, aaudio_allowed_capture_policy_t capturePolicy)) /* API 29 */
+SDL_PROC_UNUSED(void, AAudioStreamBuilder_setSessionId, (AAudioStreamBuilder* builder, aaudio_session_id_t sessionId)) /* API 28 */
+SDL_PROC_UNUSED(void, AAudioStreamBuilder_setPrivacySensitive, (AAudioStreamBuilder* builder, bool privacySensitive)) /* API 30 */
+SDL_PROC_UNUSED(void, AAudioStreamBuilder_setDataCallback, (AAudioStreamBuilder* builder, AAudioStream_dataCallback callback, void *userData))
+SDL_PROC_UNUSED(void, AAudioStreamBuilder_setFramesPerDataCallback, (AAudioStreamBuilder* builder, int32_t numFrames))
+SDL_PROC_UNUSED(void, AAudioStreamBuilder_setErrorCallback, (AAudioStreamBuilder* builder, AAudioStream_errorCallback callback, void *userData))
+SDL_PROC(aaudio_result_t , AAudioStreamBuilder_openStream, (AAudioStreamBuilder* builder, AAudioStream** stream))
+SDL_PROC(aaudio_result_t , AAudioStreamBuilder_delete, (AAudioStreamBuilder* builder))
+SDL_PROC_UNUSED(aaudio_result_t , AAudioStream_release, (AAudioStream* stream)) /* API 30 */
+SDL_PROC(aaudio_result_t , AAudioStream_close, (AAudioStream* stream))
+SDL_PROC(aaudio_result_t , AAudioStream_requestStart, (AAudioStream* stream))
+SDL_PROC(aaudio_result_t , AAudioStream_requestPause, (AAudioStream* stream))
+SDL_PROC_UNUSED(aaudio_result_t , AAudioStream_requestFlush, (AAudioStream* stream))
+SDL_PROC(aaudio_result_t , AAudioStream_requestStop, (AAudioStream* stream))
+SDL_PROC_UNUSED(aaudio_stream_state_t, AAudioStream_getState, (AAudioStream* stream))
+SDL_PROC_UNUSED(aaudio_result_t, AAudioStream_waitForStateChange, (AAudioStream* stream, aaudio_stream_state_t inputState, aaudio_stream_state_t *nextState, int64_t timeoutNanoseconds))
+SDL_PROC(aaudio_result_t, AAudioStream_read, (AAudioStream* stream, void *buffer, int32_t numFrames, int64_t timeoutNanoseconds))
+SDL_PROC(aaudio_result_t, AAudioStream_write, (AAudioStream* stream, const void *buffer, int32_t numFrames, int64_t timeoutNanoseconds))
+SDL_PROC_UNUSED(aaudio_result_t, AAudioStream_setBufferSizeInFrames, (AAudioStream* stream, int32_t numFrames))
+SDL_PROC_UNUSED(int32_t, AAudioStream_getBufferSizeInFrames, (AAudioStream* stream))
+SDL_PROC_UNUSED(int32_t, AAudioStream_getFramesPerBurst, (AAudioStream* stream))
+SDL_PROC_UNUSED(int32_t, AAudioStream_getBufferCapacityInFrames, (AAudioStream* stream))
+SDL_PROC_UNUSED(int32_t, AAudioStream_getFramesPerDataCallback, (AAudioStream* stream))
+SDL_PROC(int32_t, AAudioStream_getXRunCount, (AAudioStream* stream))
+SDL_PROC(int32_t, AAudioStream_getSampleRate, (AAudioStream* stream))
+SDL_PROC(int32_t, AAudioStream_getChannelCount, (AAudioStream* stream))
+SDL_PROC_UNUSED(int32_t, AAudioStream_getSamplesPerFrame, (AAudioStream* stream))
+SDL_PROC_UNUSED(int32_t, AAudioStream_getDeviceId, (AAudioStream* stream))
+SDL_PROC(aaudio_format_t, AAudioStream_getFormat, (AAudioStream* stream))
+SDL_PROC_UNUSED(aaudio_sharing_mode_t, AAudioStream_getSharingMode, (AAudioStream* stream))
+SDL_PROC_UNUSED(aaudio_performance_mode_t, AAudioStream_getPerformanceMode, (AAudioStream* stream))
+SDL_PROC_UNUSED(aaudio_direction_t, AAudioStream_getDirection, (AAudioStream* stream))
+SDL_PROC_UNUSED(int64_t, AAudioStream_getFramesWritten, (AAudioStream* stream))
+SDL_PROC_UNUSED(int64_t, AAudioStream_getFramesRead, (AAudioStream* stream))
+SDL_PROC_UNUSED(aaudio_session_id_t, AAudioStream_getSessionId, (AAudioStream* stream)) /* API 28 */
+SDL_PROC_UNUSED(aaudio_result_t, AAudioStream_getTimestamp, (AAudioStream* stream, clockid_t clockid, int64_t *framePosition, int64_t *timeNanoseconds))
+SDL_PROC_UNUSED(aaudio_usage_t, AAudioStream_getUsage, (AAudioStream* stream)) /* API 28 */
+SDL_PROC_UNUSED(aaudio_content_type_t, AAudioStream_getContentType, (AAudioStream* stream)) /* API 28 */
+SDL_PROC_UNUSED(aaudio_input_preset_t, AAudioStream_getInputPreset, (AAudioStream* stream)) /* API 28 */
+SDL_PROC_UNUSED(aaudio_allowed_capture_policy_t, AAudioStream_getAllowedCapturePolicy, ( AAudioStream* stream)) /* API 29 */
+SDL_PROC_UNUSED(bool, AAudioStream_isPrivacySensitive, (AAudioStream* stream)) /* API 30 */
+