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

https://developer.android.com/ndk/guides/audio/aaudio/aaudio
main
Sylvain 2021-04-15 20:54:58 +02:00
parent 4118fe62fe
commit 04b2f5f6ec
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/*
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 */
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/*
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 */
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/*
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 */