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cubeb_opensl.c
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/*
* Copyright © 2012 Mozilla Foundation
*
* This program is made available under an ISC-style license. See the
* accompanying file LICENSE for details.
*/
#undef NDEBUG
#include <SLES/OpenSLES.h>
#include <assert.h>
#include <dlfcn.h>
#include <errno.h>
#include <math.h>
#include <pthread.h>
#include <stdlib.h>
#include <time.h>
#if defined(__ANDROID__)
#include "android/sles_definitions.h"
#include <SLES/OpenSLES_Android.h>
#include <android/api-level.h>
#include <android/log.h>
#include <dlfcn.h>
#include <sys/system_properties.h>
#endif
#include "android/cubeb-output-latency.h"
#include "cubeb-internal.h"
#include "cubeb-sles.h"
#include "cubeb/cubeb.h"
#include "cubeb_android.h"
#include "cubeb_array_queue.h"
#include "cubeb_resampler.h"
#if defined(__ANDROID__)
#ifdef LOG
#undef LOG
#endif
//#define LOGGING_ENABLED
#ifdef LOGGING_ENABLED
#define LOG(args...) \
__android_log_print(ANDROID_LOG_INFO, "Cubeb_OpenSL", ##args)
#else
#define LOG(...)
#endif
//#define TIMESTAMP_ENABLED
#ifdef TIMESTAMP_ENABLED
#define FILENAME \
(strrchr(__FILE__, '/') ? strrchr(__FILE__, '/') + 1 : __FILE__)
#define LOG_TS(args...) \
__android_log_print(ANDROID_LOG_INFO, "Cubeb_OpenSL ES: Timestamp(usec)", \
##args)
#define TIMESTAMP(msg) \
do { \
struct timeval timestamp; \
int ts_ret = gettimeofday(×tamp, NULL); \
if (ts_ret == 0) { \
LOG_TS("%lld: %s (%s %s:%d)", \
timestamp.tv_sec * 1000000LL + timestamp.tv_usec, msg, \
__FUNCTION__, FILENAME, __LINE__); \
} else { \
LOG_TS("Error: %s (%s %s:%d) - %s", msg, __FUNCTION__, FILENAME, \
__LINE__); \
} \
} while (0)
#else
#define TIMESTAMP(...)
#endif
#define ANDROID_VERSION_GINGERBREAD_MR1 10
#define ANDROID_VERSION_JELLY_BEAN 18
#define ANDROID_VERSION_LOLLIPOP 21
#define ANDROID_VERSION_MARSHMALLOW 23
#define ANDROID_VERSION_N_MR1 25
#endif
#define DEFAULT_SAMPLE_RATE 48000
#define DEFAULT_NUM_OF_FRAMES 480
static struct cubeb_ops const opensl_ops;
struct cubeb {
struct cubeb_ops const * ops;
void * lib;
SLInterfaceID SL_IID_BUFFERQUEUE;
SLInterfaceID SL_IID_PLAY;
#if defined(__ANDROID__)
SLInterfaceID SL_IID_ANDROIDCONFIGURATION;
SLInterfaceID SL_IID_ANDROIDSIMPLEBUFFERQUEUE;
#endif
SLInterfaceID SL_IID_VOLUME;
SLInterfaceID SL_IID_RECORD;
SLObjectItf engObj;
SLEngineItf eng;
SLObjectItf outmixObj;
output_latency_function * p_output_latency_function;
};
#define NELEMS(A) (sizeof(A) / sizeof A[0])
#define NBUFS 2
struct cubeb_stream {
/* Note: Must match cubeb_stream layout in cubeb.c. */
cubeb * context;
void * user_ptr;
/**/
pthread_mutex_t mutex;
SLObjectItf playerObj;
SLPlayItf play;
SLBufferQueueItf bufq;
SLVolumeItf volume;
void ** queuebuf;
uint32_t queuebuf_capacity;
int queuebuf_idx;
long queuebuf_len;
long bytespersec;
long framesize;
/* Total number of played frames.
* Synchronized by stream::mutex lock. */
long written;
/* Flag indicating draining. Synchronized
* by stream::mutex lock. */
int draining;
/* Flags to determine in/out.*/
uint32_t input_enabled;
uint32_t output_enabled;
/* Recorder abstract object. */
SLObjectItf recorderObj;
/* Recorder Itf for input capture. */
SLRecordItf recorderItf;
/* Buffer queue for input capture. */
SLAndroidSimpleBufferQueueItf recorderBufferQueueItf;
/* Store input buffers. */
void ** input_buffer_array;
/* The capacity of the array.
* On capture only can be small (4).
* On full duplex is calculated to
* store 1 sec of data buffers. */
uint32_t input_array_capacity;
/* Current filled index of input buffer array.
* It is initiated to -1 indicating buffering
* have not started yet. */
int input_buffer_index;
/* Length of input buffer.*/
uint32_t input_buffer_length;
/* Input frame size */
uint32_t input_frame_size;
/* Device sampling rate. If user rate is not
* accepted an compatible rate is set. If it is
* accepted this is equal to params.rate. */
uint32_t input_device_rate;
/* Exchange input buffers between input
* and full duplex threads. */
array_queue * input_queue;
/* Silent input buffer used on full duplex. */
void * input_silent_buffer;
/* Number of input frames from the start of the stream*/
uint32_t input_total_frames;
/* Flag to stop the execution of user callback and
* close all working threads. Synchronized by
* stream::mutex lock. */
uint32_t shutdown;
/* Store user callback. */
cubeb_data_callback data_callback;
/* Store state callback. */
cubeb_state_callback state_callback;
cubeb_resampler * resampler;
unsigned int user_output_rate;
unsigned int output_configured_rate;
unsigned int buffer_size_frames;
// Audio output latency used in cubeb_stream_get_position().
unsigned int output_latency_ms;
int64_t lastPosition;
int64_t lastPositionTimeStamp;
int64_t lastCompensativePosition;
int voice_input;
int voice_output;
};
/* Forward declaration. */
static int
opensl_stop_player(cubeb_stream * stm);
static int
opensl_stop_recorder(cubeb_stream * stm);
static int
opensl_get_draining(cubeb_stream * stm)
{
#ifdef DEBUG
int r = pthread_mutex_trylock(&stm->mutex);
assert((r == EDEADLK || r == EBUSY) &&
"get_draining: mutex should be locked but it's not.");
#endif
return stm->draining;
}
static void
opensl_set_draining(cubeb_stream * stm, int value)
{
#ifdef DEBUG
int r = pthread_mutex_trylock(&stm->mutex);
LOG("set draining try r = %d", r);
assert((r == EDEADLK || r == EBUSY) &&
"set_draining: mutex should be locked but it's not.");
#endif
assert(value == 0 || value == 1);
stm->draining = value;
}
static void
opensl_notify_drained(cubeb_stream * stm)
{
assert(stm);
int r = pthread_mutex_lock(&stm->mutex);
assert(r == 0);
int draining = opensl_get_draining(stm);
r = pthread_mutex_unlock(&stm->mutex);
assert(r == 0);
if (draining) {
stm->state_callback(stm, stm->user_ptr, CUBEB_STATE_DRAINED);
if (stm->play) {
LOG("stop player in play_callback");
r = opensl_stop_player(stm);
assert(r == CUBEB_OK);
}
if (stm->recorderItf) {
r = opensl_stop_recorder(stm);
assert(r == CUBEB_OK);
}
}
}
static uint32_t
opensl_get_shutdown(cubeb_stream * stm)
{
#ifdef DEBUG
int r = pthread_mutex_trylock(&stm->mutex);
assert((r == EDEADLK || r == EBUSY) &&
"get_shutdown: mutex should be locked but it's not.");
#endif
return stm->shutdown;
}
static void
opensl_set_shutdown(cubeb_stream * stm, uint32_t value)
{
#ifdef DEBUG
int r = pthread_mutex_trylock(&stm->mutex);
LOG("set shutdown try r = %d", r);
assert((r == EDEADLK || r == EBUSY) &&
"set_shutdown: mutex should be locked but it's not.");
#endif
assert(value == 0 || value == 1);
stm->shutdown = value;
}
static void
play_callback(SLPlayItf caller, void * user_ptr, SLuint32 event)
{
cubeb_stream * stm = user_ptr;
assert(stm);
switch (event) {
case SL_PLAYEVENT_HEADATMARKER:
opensl_notify_drained(stm);
break;
default:
break;
}
}
static void
recorder_marker_callback(SLRecordItf caller, void * pContext, SLuint32 event)
{
cubeb_stream * stm = pContext;
assert(stm);
if (event == SL_RECORDEVENT_HEADATMARKER) {
int r = pthread_mutex_lock(&stm->mutex);
assert(r == 0);
int draining = opensl_get_draining(stm);
r = pthread_mutex_unlock(&stm->mutex);
assert(r == 0);
if (draining) {
stm->state_callback(stm, stm->user_ptr, CUBEB_STATE_DRAINED);
if (stm->recorderItf) {
r = opensl_stop_recorder(stm);
assert(r == CUBEB_OK);
}
if (stm->play) {
r = opensl_stop_player(stm);
assert(r == CUBEB_OK);
}
}
}
}
static void
bufferqueue_callback(SLBufferQueueItf caller, void * user_ptr)
{
cubeb_stream * stm = user_ptr;
assert(stm);
SLBufferQueueState state;
SLresult res;
long written = 0;
res = (*stm->bufq)->GetState(stm->bufq, &state);
assert(res == SL_RESULT_SUCCESS);
if (state.count > 1) {
return;
}
uint8_t * buf = stm->queuebuf[stm->queuebuf_idx];
written = 0;
int r = pthread_mutex_lock(&stm->mutex);
assert(r == 0);
int draining = opensl_get_draining(stm);
uint32_t shutdown = opensl_get_shutdown(stm);
r = pthread_mutex_unlock(&stm->mutex);
assert(r == 0);
if (!draining && !shutdown) {
written = cubeb_resampler_fill(stm->resampler, NULL, NULL, buf,
stm->queuebuf_len / stm->framesize);
LOG("bufferqueue_callback: resampler fill returned %ld frames", written);
if (written < 0 || written * stm->framesize > stm->queuebuf_len) {
r = pthread_mutex_lock(&stm->mutex);
assert(r == 0);
opensl_set_shutdown(stm, 1);
r = pthread_mutex_unlock(&stm->mutex);
assert(r == 0);
opensl_stop_player(stm);
stm->state_callback(stm, stm->user_ptr, CUBEB_STATE_ERROR);
return;
}
}
// Keep sending silent data even in draining mode to prevent the audio
// back-end from being stopped automatically by OpenSL/ES.
assert(stm->queuebuf_len >= written * stm->framesize);
memset(buf + written * stm->framesize, 0,
stm->queuebuf_len - written * stm->framesize);
res = (*stm->bufq)->Enqueue(stm->bufq, buf, stm->queuebuf_len);
assert(res == SL_RESULT_SUCCESS);
stm->queuebuf_idx = (stm->queuebuf_idx + 1) % stm->queuebuf_capacity;
if (written > 0) {
pthread_mutex_lock(&stm->mutex);
stm->written += written;
pthread_mutex_unlock(&stm->mutex);
}
if (!draining && written * stm->framesize < stm->queuebuf_len) {
LOG("bufferqueue_callback draining");
r = pthread_mutex_lock(&stm->mutex);
assert(r == 0);
int64_t written_duration =
INT64_C(1000) * stm->written * stm->framesize / stm->bytespersec;
opensl_set_draining(stm, 1);
r = pthread_mutex_unlock(&stm->mutex);
assert(r == 0);
if (written_duration == 0) {
// since we didn't write any sample, it's not possible to reach the marker
// time and trigger the callback. We should initiative notify drained.
opensl_notify_drained(stm);
} else {
// Use SL_PLAYEVENT_HEADATMARKER event from slPlayCallback of SLPlayItf
// to make sure all the data has been processed.
(*stm->play)
->SetMarkerPosition(stm->play, (SLmillisecond)written_duration);
}
return;
}
}
static int
opensl_enqueue_recorder(cubeb_stream * stm, void ** last_filled_buffer)
{
assert(stm);
int current_index = stm->input_buffer_index;
void * last_buffer = NULL;
if (current_index < 0) {
// This is the first enqueue
current_index = 0;
} else {
// The current index hold the last filled buffer get it before advance
// index.
last_buffer = stm->input_buffer_array[current_index];
// Advance to get next available buffer
current_index = (current_index + 1) % stm->input_array_capacity;
}
// enqueue next empty buffer to be filled by the recorder
SLresult res = (*stm->recorderBufferQueueItf)
->Enqueue(stm->recorderBufferQueueItf,
stm->input_buffer_array[current_index],
stm->input_buffer_length);
if (res != SL_RESULT_SUCCESS) {
LOG("Enqueue recorder failed. Error code: %lu", res);
return CUBEB_ERROR;
}
// All good, update buffer and index.
stm->input_buffer_index = current_index;
if (last_filled_buffer) {
*last_filled_buffer = last_buffer;
}
return CUBEB_OK;
}
// input data callback
void
recorder_callback(SLAndroidSimpleBufferQueueItf bq, void * context)
{
assert(context);
cubeb_stream * stm = context;
assert(stm->recorderBufferQueueItf);
int r = pthread_mutex_lock(&stm->mutex);
assert(r == 0);
uint32_t shutdown = opensl_get_shutdown(stm);
int draining = opensl_get_draining(stm);
r = pthread_mutex_unlock(&stm->mutex);
assert(r == 0);
if (shutdown || draining) {
// According to the OpenSL ES 1.1 Specification, 8.14 SLBufferQueueItf
// page 184, on transition to the SL_RECORDSTATE_STOPPED state,
// the application should continue to enqueue buffers onto the queue
// to retrieve the residual recorded data in the system.
r = opensl_enqueue_recorder(stm, NULL);
assert(r == CUBEB_OK);
return;
}
// Enqueue next available buffer and get the last filled buffer.
void * input_buffer = NULL;
r = opensl_enqueue_recorder(stm, &input_buffer);
assert(r == CUBEB_OK);
assert(input_buffer);
// Fill resampler with last input
long input_frame_count = stm->input_buffer_length / stm->input_frame_size;
long got = cubeb_resampler_fill(stm->resampler, input_buffer,
&input_frame_count, NULL, 0);
// Error case
if (got < 0 || got > input_frame_count) {
r = pthread_mutex_lock(&stm->mutex);
assert(r == 0);
opensl_set_shutdown(stm, 1);
r = pthread_mutex_unlock(&stm->mutex);
assert(r == 0);
r = opensl_stop_recorder(stm);
assert(r == CUBEB_OK);
stm->state_callback(stm, stm->user_ptr, CUBEB_STATE_ERROR);
}
// Advance total stream frames
stm->input_total_frames += got;
if (got < input_frame_count) {
r = pthread_mutex_lock(&stm->mutex);
assert(r == 0);
opensl_set_draining(stm, 1);
r = pthread_mutex_unlock(&stm->mutex);
assert(r == 0);
int64_t duration =
INT64_C(1000) * stm->input_total_frames / stm->input_device_rate;
(*stm->recorderItf)
->SetMarkerPosition(stm->recorderItf, (SLmillisecond)duration);
return;
}
}
void
recorder_fullduplex_callback(SLAndroidSimpleBufferQueueItf bq, void * context)
{
assert(context);
cubeb_stream * stm = context;
assert(stm->recorderBufferQueueItf);
int r = pthread_mutex_lock(&stm->mutex);
assert(r == 0);
int draining = opensl_get_draining(stm);
uint32_t shutdown = opensl_get_shutdown(stm);
r = pthread_mutex_unlock(&stm->mutex);
assert(r == 0);
if (shutdown || draining) {
/* On draining and shutdown the recorder should have been stoped from
* the one set the flags. Accordint to the doc, on transition to
* the SL_RECORDSTATE_STOPPED state, the application should
* continue to enqueue buffers onto the queue to retrieve the residual
* recorded data in the system. */
LOG("Input shutdown %d or drain %d", shutdown, draining);
int r = opensl_enqueue_recorder(stm, NULL);
assert(r == CUBEB_OK);
return;
}
// Enqueue next available buffer and get the last filled buffer.
void * input_buffer = NULL;
r = opensl_enqueue_recorder(stm, &input_buffer);
assert(r == CUBEB_OK);
assert(input_buffer);
assert(stm->input_queue);
r = array_queue_push(stm->input_queue, input_buffer);
if (r == -1) {
LOG("Input queue is full, drop input ...");
return;
}
LOG("Input pushed in the queue, input array %zu",
array_queue_get_size(stm->input_queue));
}
static void
player_fullduplex_callback(SLBufferQueueItf caller, void * user_ptr)
{
TIMESTAMP("ENTER");
cubeb_stream * stm = user_ptr;
assert(stm);
SLresult res;
int r = pthread_mutex_lock(&stm->mutex);
assert(r == 0);
int draining = opensl_get_draining(stm);
uint32_t shutdown = opensl_get_shutdown(stm);
r = pthread_mutex_unlock(&stm->mutex);
assert(r == 0);
// Get output
void * output_buffer = NULL;
r = pthread_mutex_lock(&stm->mutex);
assert(r == 0);
output_buffer = stm->queuebuf[stm->queuebuf_idx];
// Advance the output buffer queue index
stm->queuebuf_idx = (stm->queuebuf_idx + 1) % stm->queuebuf_capacity;
r = pthread_mutex_unlock(&stm->mutex);
assert(r == 0);
if (shutdown || draining) {
LOG("Shutdown/draining, send silent");
// Set silent on buffer
memset(output_buffer, 0, stm->queuebuf_len);
// Enqueue data in player buffer queue
res = (*stm->bufq)->Enqueue(stm->bufq, output_buffer, stm->queuebuf_len);
assert(res == SL_RESULT_SUCCESS);
return;
}
// Get input.
void * input_buffer = array_queue_pop(stm->input_queue);
long input_frame_count = stm->input_buffer_length / stm->input_frame_size;
long frames_needed = stm->queuebuf_len / stm->framesize;
if (!input_buffer) {
LOG("Input hole set silent input buffer");
input_buffer = stm->input_silent_buffer;
}
long written = 0;
// Trigger user callback through resampler
written =
cubeb_resampler_fill(stm->resampler, input_buffer, &input_frame_count,
output_buffer, frames_needed);
LOG("Fill: written %ld, frames_needed %ld, input array size %zu", written,
frames_needed, array_queue_get_size(stm->input_queue));
if (written < 0 || written > frames_needed) {
// Error case
r = pthread_mutex_lock(&stm->mutex);
assert(r == 0);
opensl_set_shutdown(stm, 1);
r = pthread_mutex_unlock(&stm->mutex);
assert(r == 0);
opensl_stop_player(stm);
opensl_stop_recorder(stm);
stm->state_callback(stm, stm->user_ptr, CUBEB_STATE_ERROR);
memset(output_buffer, 0, stm->queuebuf_len);
// Enqueue data in player buffer queue
res = (*stm->bufq)->Enqueue(stm->bufq, output_buffer, stm->queuebuf_len);
assert(res == SL_RESULT_SUCCESS);
return;
}
// Advance total out written frames counter
r = pthread_mutex_lock(&stm->mutex);
assert(r == 0);
stm->written += written;
r = pthread_mutex_unlock(&stm->mutex);
assert(r == 0);
if (written < frames_needed) {
r = pthread_mutex_lock(&stm->mutex);
assert(r == 0);
int64_t written_duration =
INT64_C(1000) * stm->written * stm->framesize / stm->bytespersec;
opensl_set_draining(stm, 1);
r = pthread_mutex_unlock(&stm->mutex);
assert(r == 0);
// Use SL_PLAYEVENT_HEADATMARKER event from slPlayCallback of SLPlayItf
// to make sure all the data has been processed.
(*stm->play)->SetMarkerPosition(stm->play, (SLmillisecond)written_duration);
}
// Keep sending silent data even in draining mode to prevent the audio
// back-end from being stopped automatically by OpenSL/ES.
memset((uint8_t *)output_buffer + written * stm->framesize, 0,
stm->queuebuf_len - written * stm->framesize);
// Enqueue data in player buffer queue
res = (*stm->bufq)->Enqueue(stm->bufq, output_buffer, stm->queuebuf_len);
assert(res == SL_RESULT_SUCCESS);
TIMESTAMP("EXIT");
}
static void
opensl_destroy(cubeb * ctx);
#if defined(__ANDROID__)
#if (__ANDROID_API__ >= ANDROID_VERSION_LOLLIPOP)
typedef int(system_property_get)(const char *, char *);
static int
wrap_system_property_get(const char * name, char * value)
{
void * libc = dlopen("libc.so", RTLD_LAZY);
if (!libc) {
LOG("Failed to open libc.so");
return -1;
}
system_property_get * func =
(system_property_get *)dlsym(libc, "__system_property_get");
int ret = -1;
if (func) {
ret = func(name, value);
}
dlclose(libc);
return ret;
}
#endif
static int
get_android_version(void)
{
char version_string[PROP_VALUE_MAX];
memset(version_string, 0, PROP_VALUE_MAX);
#if (__ANDROID_API__ >= ANDROID_VERSION_LOLLIPOP)
int len = wrap_system_property_get("ro.build.version.sdk", version_string);
#else
int len = __system_property_get("ro.build.version.sdk", version_string);
#endif
if (len <= 0) {
LOG("Failed to get Android version!\n");
return len;
}
int version = (int)strtol(version_string, NULL, 10);
LOG("Android version %d", version);
return version;
}
#endif
/*static*/ int
opensl_init(cubeb ** context, char const * context_name)
{
cubeb * ctx;
#if defined(__ANDROID__)
int android_version = get_android_version();
if (android_version > 0 &&
android_version <= ANDROID_VERSION_GINGERBREAD_MR1) {
// Don't even attempt to run on Gingerbread and lower
return CUBEB_ERROR;
}
#endif
*context = NULL;
ctx = calloc(1, sizeof(*ctx));
assert(ctx);
ctx->ops = &opensl_ops;
ctx->lib = dlopen("libOpenSLES.so", RTLD_LAZY);
if (!ctx->lib) {
free(ctx);
return CUBEB_ERROR;
}
typedef SLresult (*slCreateEngine_t)(
SLObjectItf *, SLuint32, const SLEngineOption *, SLuint32,
const SLInterfaceID *, const SLboolean *);
slCreateEngine_t f_slCreateEngine =
(slCreateEngine_t)dlsym(ctx->lib, "slCreateEngine");
SLInterfaceID SL_IID_ENGINE =
*(SLInterfaceID *)dlsym(ctx->lib, "SL_IID_ENGINE");
SLInterfaceID SL_IID_OUTPUTMIX =
*(SLInterfaceID *)dlsym(ctx->lib, "SL_IID_OUTPUTMIX");
ctx->SL_IID_VOLUME = *(SLInterfaceID *)dlsym(ctx->lib, "SL_IID_VOLUME");
ctx->SL_IID_BUFFERQUEUE =
*(SLInterfaceID *)dlsym(ctx->lib, "SL_IID_BUFFERQUEUE");
#if defined(__ANDROID__)
ctx->SL_IID_ANDROIDCONFIGURATION =
*(SLInterfaceID *)dlsym(ctx->lib, "SL_IID_ANDROIDCONFIGURATION");
ctx->SL_IID_ANDROIDSIMPLEBUFFERQUEUE =
*(SLInterfaceID *)dlsym(ctx->lib, "SL_IID_ANDROIDSIMPLEBUFFERQUEUE");
#endif
ctx->SL_IID_PLAY = *(SLInterfaceID *)dlsym(ctx->lib, "SL_IID_PLAY");
ctx->SL_IID_RECORD = *(SLInterfaceID *)dlsym(ctx->lib, "SL_IID_RECORD");
if (!f_slCreateEngine || !SL_IID_ENGINE || !SL_IID_OUTPUTMIX ||
!ctx->SL_IID_BUFFERQUEUE ||
#if defined(__ANDROID__)
!ctx->SL_IID_ANDROIDCONFIGURATION ||
!ctx->SL_IID_ANDROIDSIMPLEBUFFERQUEUE ||
#endif
!ctx->SL_IID_PLAY || !ctx->SL_IID_RECORD) {
opensl_destroy(ctx);
return CUBEB_ERROR;
}
const SLEngineOption opt[] = {{SL_ENGINEOPTION_THREADSAFE, SL_BOOLEAN_TRUE}};
SLresult res;
res = cubeb_get_sles_engine(&ctx->engObj, 1, opt, 0, NULL, NULL);
if (res != SL_RESULT_SUCCESS) {
opensl_destroy(ctx);
return CUBEB_ERROR;
}
res = cubeb_realize_sles_engine(ctx->engObj);
if (res != SL_RESULT_SUCCESS) {
opensl_destroy(ctx);
return CUBEB_ERROR;
}
res = (*ctx->engObj)->GetInterface(ctx->engObj, SL_IID_ENGINE, &ctx->eng);
if (res != SL_RESULT_SUCCESS) {
opensl_destroy(ctx);
return CUBEB_ERROR;
}
const SLInterfaceID idsom[] = {SL_IID_OUTPUTMIX};
const SLboolean reqom[] = {SL_BOOLEAN_TRUE};
res =
(*ctx->eng)->CreateOutputMix(ctx->eng, &ctx->outmixObj, 1, idsom, reqom);
if (res != SL_RESULT_SUCCESS) {
opensl_destroy(ctx);
return CUBEB_ERROR;
}
res = (*ctx->outmixObj)->Realize(ctx->outmixObj, SL_BOOLEAN_FALSE);
if (res != SL_RESULT_SUCCESS) {
opensl_destroy(ctx);
return CUBEB_ERROR;
}
ctx->p_output_latency_function =
cubeb_output_latency_load_method(android_version);
if (!cubeb_output_latency_method_is_loaded(ctx->p_output_latency_function)) {
LOG("Warning: output latency is not available, cubeb_stream_get_position() "
"is not supported");
}
*context = ctx;
LOG("Cubeb init (%p) success", ctx);
return CUBEB_OK;
}
static char const *
opensl_get_backend_id(cubeb * ctx)
{
return "opensl";
}
static int
opensl_get_max_channel_count(cubeb * ctx, uint32_t * max_channels)
{
assert(ctx && max_channels);
/* The android mixer handles up to two channels, see
http://androidxref.com/4.2.2_r1/xref/frameworks/av/services/audioflinger/AudioFlinger.h#67
*/
*max_channels = 2;
return CUBEB_OK;
}
static void
opensl_destroy(cubeb * ctx)
{
if (ctx->outmixObj)
(*ctx->outmixObj)->Destroy(ctx->outmixObj);
if (ctx->engObj)
cubeb_destroy_sles_engine(&ctx->engObj);
dlclose(ctx->lib);
if (ctx->p_output_latency_function)
cubeb_output_latency_unload_method(ctx->p_output_latency_function);
free(ctx);
}
static void
opensl_stream_destroy(cubeb_stream * stm);
#if defined(__ANDROID__) && (__ANDROID_API__ >= ANDROID_VERSION_LOLLIPOP)
static int
opensl_set_format_ext(SLAndroidDataFormat_PCM_EX * format,
cubeb_stream_params * params)
{
assert(format);
assert(params);
format->formatType = SL_ANDROID_DATAFORMAT_PCM_EX;
format->numChannels = params->channels;
// sampleRate is in milliHertz
format->sampleRate = params->rate * 1000;
format->channelMask = params->channels == 1
? SL_SPEAKER_FRONT_CENTER
: SL_SPEAKER_FRONT_LEFT | SL_SPEAKER_FRONT_RIGHT;
switch (params->format) {
case CUBEB_SAMPLE_S16LE:
format->bitsPerSample = SL_PCMSAMPLEFORMAT_FIXED_16;
format->containerSize = SL_PCMSAMPLEFORMAT_FIXED_16;
format->representation = SL_ANDROID_PCM_REPRESENTATION_SIGNED_INT;
format->endianness = SL_BYTEORDER_LITTLEENDIAN;
break;
case CUBEB_SAMPLE_S16BE:
format->bitsPerSample = SL_PCMSAMPLEFORMAT_FIXED_16;
format->containerSize = SL_PCMSAMPLEFORMAT_FIXED_16;
format->representation = SL_ANDROID_PCM_REPRESENTATION_SIGNED_INT;
format->endianness = SL_BYTEORDER_BIGENDIAN;
break;
case CUBEB_SAMPLE_FLOAT32LE:
format->bitsPerSample = SL_PCMSAMPLEFORMAT_FIXED_32;
format->containerSize = SL_PCMSAMPLEFORMAT_FIXED_32;
format->representation = SL_ANDROID_PCM_REPRESENTATION_FLOAT;
format->endianness = SL_BYTEORDER_LITTLEENDIAN;
break;
case CUBEB_SAMPLE_FLOAT32BE:
format->bitsPerSample = SL_PCMSAMPLEFORMAT_FIXED_32;
format->containerSize = SL_PCMSAMPLEFORMAT_FIXED_32;
format->representation = SL_ANDROID_PCM_REPRESENTATION_FLOAT;
format->endianness = SL_BYTEORDER_BIGENDIAN;
break;
default:
return CUBEB_ERROR_INVALID_FORMAT;
}
return CUBEB_OK;
}
#endif
static int
opensl_set_format(SLDataFormat_PCM * format, cubeb_stream_params * params)
{
assert(format);
assert(params);
format->formatType = SL_DATAFORMAT_PCM;
format->numChannels = params->channels;
// samplesPerSec is in milliHertz
format->samplesPerSec = params->rate * 1000;
format->bitsPerSample = SL_PCMSAMPLEFORMAT_FIXED_16;
format->containerSize = SL_PCMSAMPLEFORMAT_FIXED_16;
format->channelMask = params->channels == 1
? SL_SPEAKER_FRONT_CENTER
: SL_SPEAKER_FRONT_LEFT | SL_SPEAKER_FRONT_RIGHT;
switch (params->format) {
case CUBEB_SAMPLE_S16LE:
format->endianness = SL_BYTEORDER_LITTLEENDIAN;
break;
case CUBEB_SAMPLE_S16BE:
format->endianness = SL_BYTEORDER_BIGENDIAN;
break;
default:
return CUBEB_ERROR_INVALID_FORMAT;
}
return CUBEB_OK;
}
static int
opensl_configure_capture(cubeb_stream * stm, cubeb_stream_params * params)
{
assert(stm);
assert(params);
SLDataLocator_AndroidSimpleBufferQueue lDataLocatorOut;
lDataLocatorOut.locatorType = SL_DATALOCATOR_ANDROIDSIMPLEBUFFERQUEUE;
lDataLocatorOut.numBuffers = NBUFS;
SLDataFormat_PCM lDataFormat;
int r = opensl_set_format(&lDataFormat, params);
if (r != CUBEB_OK) {
return CUBEB_ERROR_INVALID_FORMAT;
}
/* For now set device rate to params rate. */
stm->input_device_rate = params->rate;
SLDataSink lDataSink;
lDataSink.pLocator = &lDataLocatorOut;
lDataSink.pFormat = &lDataFormat;
SLDataLocator_IODevice lDataLocatorIn;
lDataLocatorIn.locatorType = SL_DATALOCATOR_IODEVICE;
lDataLocatorIn.deviceType = SL_IODEVICE_AUDIOINPUT;
lDataLocatorIn.deviceID = SL_DEFAULTDEVICEID_AUDIOINPUT;
lDataLocatorIn.device = NULL;
SLDataSource lDataSource;
lDataSource.pLocator = &lDataLocatorIn;
lDataSource.pFormat = NULL;
const SLInterfaceID lSoundRecorderIIDs[] = {
stm->context->SL_IID_RECORD,
stm->context->SL_IID_ANDROIDSIMPLEBUFFERQUEUE,
stm->context->SL_IID_ANDROIDCONFIGURATION};
const SLboolean lSoundRecorderReqs[] = {SL_BOOLEAN_TRUE, SL_BOOLEAN_TRUE,
SL_BOOLEAN_TRUE};
// create the audio recorder abstract object
SLresult res = (*stm->context->eng)
->CreateAudioRecorder(
stm->context->eng, &stm->recorderObj, &lDataSource,
&lDataSink, NELEMS(lSoundRecorderIIDs),
lSoundRecorderIIDs, lSoundRecorderReqs);
// Sample rate not supported. Try again with default sample rate!
if (res == SL_RESULT_CONTENT_UNSUPPORTED) {
if (stm->output_enabled && stm->output_configured_rate != 0) {
// Set the same with the player. Since there is no
// api for input device this is a safe choice.
stm->input_device_rate = stm->output_configured_rate;
} else {
// The output preferred rate is used for an input only scenario.
// The default rate expected to be supported from all android devices.
stm->input_device_rate = DEFAULT_SAMPLE_RATE;
}
lDataFormat.samplesPerSec = stm->input_device_rate * 1000;
res = (*stm->context->eng)
->CreateAudioRecorder(stm->context->eng, &stm->recorderObj,
&lDataSource, &lDataSink,
NELEMS(lSoundRecorderIIDs),
lSoundRecorderIIDs, lSoundRecorderReqs);
if (res != SL_RESULT_SUCCESS) {
LOG("Failed to create recorder. Error code: %lu", res);
return CUBEB_ERROR;
}
}
if (get_android_version() > ANDROID_VERSION_JELLY_BEAN) {
SLAndroidConfigurationItf recorderConfig;
res = (*stm->recorderObj)
->GetInterface(stm->recorderObj,
stm->context->SL_IID_ANDROIDCONFIGURATION,
&recorderConfig);
if (res != SL_RESULT_SUCCESS) {
LOG("Failed to get the android configuration interface for recorder. "
"Error "
"code: %lu",
res);
return CUBEB_ERROR;
}
// Voice recognition is the lowest latency, according to the docs. Camcorder
// uses a microphone that is in the same direction as the camera.
SLint32 streamType = stm->voice_input
? SL_ANDROID_RECORDING_PRESET_VOICE_RECOGNITION
: SL_ANDROID_RECORDING_PRESET_CAMCORDER;
res =
(*recorderConfig)
->SetConfiguration(recorderConfig, SL_ANDROID_KEY_RECORDING_PRESET,
&streamType, sizeof(SLint32));
if (res != SL_RESULT_SUCCESS) {
LOG("Failed to set the android configuration to VOICE for the recorder. "
"Error code: %lu",
res);
return CUBEB_ERROR;
}
}
// realize the audio recorder
res = (*stm->recorderObj)->Realize(stm->recorderObj, SL_BOOLEAN_FALSE);
if (res != SL_RESULT_SUCCESS) {
LOG("Failed to realize recorder. Error code: %lu", res);
return CUBEB_ERROR;
}
// get the record interface
res = (*stm->recorderObj)
->GetInterface(stm->recorderObj, stm->context->SL_IID_RECORD,