/* * Copyright © 2012 Mozilla Foundation * * This program is made available under an ISC-style license. See the * accompanying file LICENSE for details. */ #undef NDEBUG #include #include #include #include #include #include #include #include #if defined(__ANDROID__) #include #include #include "android/sles_definitions.h" #include #include #include #endif #include "cubeb/cubeb.h" #include "cubeb-internal.h" #include "cubeb_resampler.h" #include "cubeb-sles.h" #include "cubeb_array_queue.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_LOLLIPOP 21 #define ANDROID_VERSION_MARSHMALLOW 23 #endif #define DEFAULT_SAMPLE_RATE 48000 static struct cubeb_ops const opensl_ops; struct cubeb { struct cubeb_ops const * ops; void * lib; void * libmedia; int32_t (* get_output_latency)(uint32_t * latency, int stream_type); 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; }; #define NELEMS(A) (sizeof(A) / sizeof A[0]) #define NBUFS 4 #define AUDIO_STREAM_TYPE_MUSIC 3 struct cubeb_stream { cubeb * context; 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; /* User pointer for data & state callbacks*/ void * user_ptr; cubeb_resampler * resampler; unsigned int inputrate; unsigned int output_configured_rate; unsigned int latency_frames; int64_t lastPosition; int64_t lastPositionTimeStamp; int64_t lastCompensativePosition; }; /* 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; int draining; 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); ctx->libmedia = dlopen("libmedia.so", RTLD_LAZY); if (!ctx->lib || !ctx->libmedia) { free(ctx); return CUBEB_ERROR; } /* Get the latency, in ms, from AudioFlinger */ /* status_t AudioSystem::getOutputLatency(uint32_t* latency, * audio_stream_type_t streamType) */ /* First, try the most recent signature. */ ctx->get_output_latency = dlsym(ctx->libmedia, "_ZN7android11AudioSystem16getOutputLatencyEPj19audio_stream_type_t"); if (!ctx->get_output_latency) { /* in case of failure, try the legacy version. */ /* status_t AudioSystem::getOutputLatency(uint32_t* latency, * int streamType) */ ctx->get_output_latency = dlsym(ctx->libmedia, "_ZN7android11AudioSystem16getOutputLatencyEPji"); if (!ctx->get_output_latency) { opensl_destroy(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; } *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 int opensl_get_preferred_sample_rate(cubeb * ctx, uint32_t * rate) { /* https://android.googlesource.com/platform/ndk.git/+/master/docs/opensles/index.html * We don't want to deal with JNI here (and we don't have Java on b2g anyways), * so we just dlopen the library and get the two symbols we need. */ int r; void * libmedia; uint32_t (*get_primary_output_samplingrate)(); uint32_t (*get_output_samplingrate)(int * samplingRate, int streamType); libmedia = dlopen("libmedia.so", RTLD_LAZY); if (!libmedia) { return CUBEB_ERROR; } /* uint32_t AudioSystem::getPrimaryOutputSamplingRate(void) */ get_primary_output_samplingrate = dlsym(libmedia, "_ZN7android11AudioSystem28getPrimaryOutputSamplingRateEv"); if (!get_primary_output_samplingrate) { /* fallback to * status_t AudioSystem::getOutputSamplingRate(int* samplingRate, int streamType) * if we cannot find getPrimaryOutputSamplingRate. */ get_output_samplingrate = dlsym(libmedia, "_ZN7android11AudioSystem21getOutputSamplingRateEPj19audio_stream_type_t"); if (!get_output_samplingrate) { /* Another signature exists, with a int instead of an audio_stream_type_t */ get_output_samplingrate = dlsym(libmedia, "_ZN7android11AudioSystem21getOutputSamplingRateEPii"); if (!get_output_samplingrate) { dlclose(libmedia); return CUBEB_ERROR; } } } if (get_primary_output_samplingrate) { *rate = get_primary_output_samplingrate(); } else { /* We don't really know about the type, here, so we just pass music. */ r = get_output_samplingrate((int *) rate, AUDIO_STREAM_TYPE_MUSIC); if (r) { dlclose(libmedia); return CUBEB_ERROR; } } dlclose(libmedia); /* Depending on which method we called above, we can get a zero back, yet have * a non-error return value, especially if the audio system is not * ready/shutting down (i.e. when we can't get our hand on the AudioFlinger * thread). */ if (*rate == 0) { return CUBEB_ERROR; } return CUBEB_OK; } static int opensl_get_min_latency(cubeb * ctx, cubeb_stream_params params, uint32_t * latency_frames) { /* https://android.googlesource.com/platform/ndk.git/+/master/docs/opensles/index.html * We don't want to deal with JNI here (and we don't have Java on b2g anyways), * so we just dlopen the library and get the two symbols we need. */ int r; void * libmedia; size_t (*get_primary_output_frame_count)(void); int (*get_output_frame_count)(size_t * frameCount, int streamType); uint32_t primary_sampling_rate; size_t primary_buffer_size; r = opensl_get_preferred_sample_rate(ctx, &primary_sampling_rate); if (r) { return CUBEB_ERROR; } libmedia = dlopen("libmedia.so", RTLD_LAZY); if (!libmedia) { return CUBEB_ERROR; } /* JB variant */ /* size_t AudioSystem::getPrimaryOutputFrameCount(void) */ get_primary_output_frame_count = dlsym(libmedia, "_ZN7android11AudioSystem26getPrimaryOutputFrameCountEv"); if (!get_primary_output_frame_count) { /* ICS variant */ /* status_t AudioSystem::getOutputFrameCount(int* frameCount, int streamType) */ get_output_frame_count = dlsym(libmedia, "_ZN7android11AudioSystem19getOutputFrameCountEPii"); if (!get_output_frame_count) { dlclose(libmedia); return CUBEB_ERROR; } } if (get_primary_output_frame_count) { primary_buffer_size = get_primary_output_frame_count(); } else { if (get_output_frame_count(&primary_buffer_size, AUDIO_STREAM_TYPE_MUSIC) != 0) { return CUBEB_ERROR; } } /* To get a fast track in Android's mixer, we need to be at the native * samplerate, which is device dependant. Some devices might be able to * resample when playing a fast track, but it's pretty rare. */ *latency_frames = primary_buffer_size; dlclose(libmedia); 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); dlclose(ctx->libmedia); free(ctx); } static void opensl_stream_destroy(cubeb_stream * stm); 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 SLuint32 lSoundRecorderIIDCount = 2; const SLInterfaceID lSoundRecorderIIDs[] = { stm->context->SL_IID_RECORD, stm->context->SL_IID_ANDROIDSIMPLEBUFFERQUEUE }; const SLboolean lSoundRecorderReqs[] = { 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, lSoundRecorderIIDCount, 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 input only scenario. This is // the correct rate to use to get a fast track for input only. r = opensl_get_preferred_sample_rate(stm->context, &stm->input_device_rate); if (r != CUBEB_OK) { // If everything else fail use a safe choice for Android. 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, lSoundRecorderIIDCount, lSoundRecorderIIDs, lSoundRecorderReqs); if (res != SL_RESULT_SUCCESS) { LOG("Failed to create 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, &stm->recorderItf); if (res != SL_RESULT_SUCCESS) { LOG("Failed to get recorder interface. Error code: %lu", res); return CUBEB_ERROR; } res = (*stm->recorderItf)->RegisterCallback(stm->recorderItf, recorder_marker_callback, stm); if (res != SL_RESULT_SUCCESS) { LOG("Failed to register recorder marker callback. Error code: %lu", res); return CUBEB_ERROR; } (*stm->recorderItf)->SetMarkerPosition(stm->recorderItf, (SLmillisecond)0); res = (*stm->recorderItf)->SetCallbackEventsMask(stm->recorderItf, (SLuint32)SL_RECORDEVENT_HEADATMARKER); if (res != SL_RESULT_SUCCESS) { LOG("Failed to set headatmarker event mask. Error code: %lu", res); return CUBEB_ERROR; } // get the simple android buffer queue interface res = (*stm->recorderObj)->GetInterface(stm->recorderObj, stm->context->SL_IID_ANDROIDSIMPLEBUFFERQUEUE, &stm->recorderBufferQueueItf); if (res != SL_RESULT_SUCCESS) { LOG("Failed to get recorder (android) buffer queue interface. Error code: %lu", res); return CUBEB_ERROR; } // register callback on record (input) buffer queue slAndroidSimpleBufferQueueCallback rec_callback = recorder_callback; if (stm->output_enabled) { // Register full duplex callback instead. rec_callback = recorder_fullduplex_callback; } res = (*stm->recorderBufferQueueItf)->RegisterCallback(stm->recorderBufferQueueItf, rec_callback, stm); if (res != SL_RESULT_SUCCESS) { LOG("Failed to register recorder buffer queue callback. Error code: %lu", res); return CUBEB_ERROR; } // Calculate length of input buffer according to requested latency stm->input_frame_size = params->channels * sizeof(int16_t); stm->input_buffer_length = (stm->input_frame_size * stm->latency_frames); // Calculate the capacity of input array stm->input_array_capacity = NBUFS; if (stm->output_enabled) { // Full duplex, update capacity to hold 1 sec of data stm->input_array_capacity = 1 * stm->input_device_rate / stm->input_buffer_length; } // Allocate input array stm->input_buffer_array = (void**)calloc(1, sizeof(void*)*stm->input_array_capacity); // Buffering has not started yet. stm->input_buffer_index = -1; // Prepare input buffers for(uint32_t i = 0; i < stm->input_array_capacity; ++i) { stm->input_buffer_array[i] = calloc(1, stm->input_buffer_length); } // On full duplex allocate input queue and silent buffer if (stm->output_enabled) { stm->input_queue = array_queue_create(stm->input_array_capacity); assert(stm->input_queue); stm->input_silent_buffer = calloc(1, stm->input_buffer_length); assert(stm->input_silent_buffer); } // Enqueue buffer to start rolling once recorder started r = opensl_enqueue_recorder(stm, NULL); if (r != CUBEB_OK) { return r; } LOG("Cubeb stream init recorder success"); return CUBEB_OK; } static int opensl_configure_playback(cubeb_stream * stm, cubeb_stream_params * params) { assert(stm); assert(params); stm->inputrate = params->rate; stm->framesize = params->channels * sizeof(int16_t); stm->lastPosition = -1; stm->lastPositionTimeStamp = 0; stm->lastCompensativePosition = -1; SLDataFormat_PCM format; int r = opensl_set_format(&format, params); if (r != CUBEB_OK) { return CUBEB_ERROR_INVALID_FORMAT; } SLDataLocator_BufferQueue loc_bufq; loc_bufq.locatorType = SL_DATALOCATOR_BUFFERQUEUE; loc_bufq.numBuffers = NBUFS; SLDataSource source; source.pLocator = &loc_bufq; source.pFormat = &format; SLDataLocator_OutputMix loc_outmix; loc_outmix.locatorType = SL_DATALOCATOR_OUTPUTMIX; loc_outmix.outputMix = stm->context->outmixObj; SLDataSink sink; sink.pLocator = &loc_outmix; sink.pFormat = NULL; #if defined(__ANDROID__) const SLInterfaceID ids[] = {stm->context->SL_IID_BUFFERQUEUE, stm->context->SL_IID_VOLUME, stm->context->SL_IID_ANDROIDCONFIGURATION}; const SLboolean req[] = {SL_BOOLEAN_TRUE, SL_BOOLEAN_TRUE, SL_BOOLEAN_TRUE}; #else const SLInterfaceID ids[] = {ctx->SL_IID_BUFFERQUEUE, ctx->SL_IID_VOLUME}; const SLboolean req[] = {SL_BOOLEAN_TRUE, SL_BOOLEAN_TRUE}; #endif assert(NELEMS(ids) == NELEMS(req)); unsigned int latency_frames = stm->latency_frames; uint32_t preferred_sampling_rate = stm->inputrate; #if defined(__ANDROID__) if (get_android_version() >= ANDROID_VERSION_MARSHMALLOW) { // Reset preferred samping rate to trigger fallback to native sampling rate. preferred_sampling_rate = 0; if (opensl_get_min_latency(stm->context, *params, &latency_frames) != CUBEB_OK) { // Default to AudioFlinger's advertised fast track latency of 10ms. latency_frames = 440; } stm->latency_frames = latency_frames; } #endif SLresult res = SL_RESULT_CONTENT_UNSUPPORTED; if (preferred_sampling_rate) { res = (*stm->context->eng)->CreateAudioPlayer(stm->context->eng, &stm->playerObj, &source, &sink, NELEMS(ids), ids, req); } // Sample rate not supported? Try again with primary sample rate! if (res == SL_RESULT_CONTENT_UNSUPPORTED) { if (opensl_get_preferred_sample_rate(stm->context, &preferred_sampling_rate)) { // If fail default is used preferred_sampling_rate = DEFAULT_SAMPLE_RATE; } format.samplesPerSec = preferred_sampling_rate * 1000; res = (*stm->context->eng)->CreateAudioPlayer(stm->context->eng, &stm->playerObj, &source, &sink, NELEMS(ids), ids, req); } if (res != SL_RESULT_SUCCESS) { LOG("Failed to create audio player. Error code: %lu", res); return CUBEB_ERROR; } stm->output_configured_rate = preferred_sampling_rate; stm->bytespersec = stm->output_configured_rate * stm->framesize; stm->queuebuf_len = stm->framesize * latency_frames; // Calculate the capacity of input array stm->queuebuf_capacity = NBUFS; if (stm->output_enabled) { // Full duplex, update capacity to hold 1 sec of data stm->queuebuf_capacity = 1 * stm->output_configured_rate / stm->queuebuf_len; } // Allocate input array stm->queuebuf = (void**)calloc(1, sizeof(void*) * stm->queuebuf_capacity); for (uint32_t i = 0; i < stm->queuebuf_capacity; ++i) { stm->queuebuf[i] = calloc(1, stm->queuebuf_len); assert(stm->queuebuf[i]); } res = (*stm->playerObj)->Realize(stm->playerObj, SL_BOOLEAN_FALSE); if (res != SL_RESULT_SUCCESS) { LOG("Failed to realize player object. Error code: %lu", res); return CUBEB_ERROR; } res = (*stm->playerObj)->GetInterface(stm->playerObj, stm->context->SL_IID_PLAY, &stm->play); if (res != SL_RESULT_SUCCESS) { LOG("Failed to get play interface. Error code: %lu", res); return CUBEB_ERROR; } res = (*stm->playerObj)->GetInterface(stm->playerObj, stm->context->SL_IID_BUFFERQUEUE, &stm->bufq); if (res != SL_RESULT_SUCCESS) { LOG("Failed to get bufferqueue interface. Error code: %lu", res); return CUBEB_ERROR; } res = (*stm->playerObj)->GetInterface(stm->playerObj, stm->context->SL_IID_VOLUME, &stm->volume); if (res != SL_RESULT_SUCCESS) { LOG("Failed to get volume interface. Error code: %lu", res); return CUBEB_ERROR; } res = (*stm->play)->RegisterCallback(stm->play, play_callback, stm); if (res != SL_RESULT_SUCCESS) { LOG("Failed to register play callback. Error code: %lu", res); return CUBEB_ERROR; } // Work around wilhelm/AudioTrack badness, bug 1221228 (*stm->play)->SetMarkerPosition(stm->play, (SLmillisecond)0); res = (*stm->play)->SetCallbackEventsMask(stm->play, (SLuint32)SL_PLAYEVENT_HEADATMARKER); if (res != SL_RESULT_SUCCESS) { LOG("Failed to set headatmarker event mask. Error code: %lu", res); return CUBEB_ERROR; } slBufferQueueCallback player_callback = bufferqueue_callback; if (stm->input_enabled) { player_callback = player_fullduplex_callback; } res = (*stm->bufq)->RegisterCallback(stm->bufq, player_callback, stm); if (res != SL_RESULT_SUCCESS) { LOG("Failed to register bufferqueue callback. Error code: %lu", res); return CUBEB_ERROR; } { // Enqueue a silent frame so once the player becomes playing, the frame // will be consumed and kick off the buffer queue callback. // Note the duration of a single frame is less than 1ms. We don't bother // adjusting the playback position. uint8_t *buf = stm->queuebuf[stm->queuebuf_idx++]; memset(buf, 0, stm->framesize); res = (*stm->bufq)->Enqueue(stm->bufq, buf, stm->framesize); assert(res == SL_RESULT_SUCCESS); } LOG("Cubeb stream init playback success"); return CUBEB_OK; } static int opensl_validate_stream_param(cubeb_stream_params * stream_params) { if ((stream_params && (stream_params->channels < 1 || stream_params->channels > 32))) { return CUBEB_ERROR_INVALID_FORMAT; } return CUBEB_OK; } static int opensl_stream_init(cubeb * ctx, cubeb_stream ** stream, char const * stream_name, cubeb_devid input_device, cubeb_stream_params * input_stream_params, cubeb_devid output_device, cubeb_stream_params * output_stream_params, unsigned int latency_frames, cubeb_data_callback data_callback, cubeb_state_callback state_callback, void * user_ptr) { cubeb_stream * stm; assert(ctx); if (input_device || output_device) { LOG("Device selection is not supported in Android. The default will be used"); } *stream = NULL; int r = opensl_validate_stream_param(output_stream_params); if(r != CUBEB_OK) { LOG("Output stream params not valid"); return r; } r = opensl_validate_stream_param(input_stream_params); if(r != CUBEB_OK) { LOG("Input stream params not valid"); return r; } stm = calloc(1, sizeof(*stm)); assert(stm); stm->context = ctx; stm->data_callback = data_callback; stm->state_callback = state_callback; stm->user_ptr = user_ptr; stm->latency_frames = latency_frames; stm->input_enabled = (input_stream_params) ? 1 : 0; stm->output_enabled = (output_stream_params) ? 1 : 0; stm->shutdown = 1; #ifdef DEBUG pthread_mutexattr_t attr; pthread_mutexattr_init(&attr); pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_ERRORCHECK); r = pthread_mutex_init(&stm->mutex, &attr); #else r = pthread_mutex_init(&stm->mutex, NULL); #endif assert(r == 0); if (output_stream_params) { LOG("Playback params: Rate %d, channels %d, format %d, latency in frames %d.", output_stream_params->rate, output_stream_params->channels, output_stream_params->format, stm->latency_frames); r = opensl_configure_playback(stm, output_stream_params); if (r != CUBEB_OK) { opensl_stream_destroy(stm); return r; } } if (input_stream_params) { LOG("Capture params: Rate %d, channels %d, format %d, latency in frames %d.", input_stream_params->rate, input_stream_params->channels, input_stream_params->format, stm->latency_frames); r = opensl_configure_capture(stm, input_stream_params); if (r != CUBEB_OK) { opensl_stream_destroy(stm); return r; } } /* Configure resampler*/ uint32_t target_sample_rate; if (input_stream_params) { target_sample_rate = input_stream_params->rate; } else { assert(output_stream_params); target_sample_rate = output_stream_params->rate; } // Use the actual configured rates for input // and output. cubeb_stream_params input_params; if (input_stream_params) { input_params = *input_stream_params; input_params.rate = stm->input_device_rate; } cubeb_stream_params output_params; if (output_stream_params) { output_params = *output_stream_params; output_params.rate = stm->output_configured_rate; } stm->resampler = cubeb_resampler_create(stm, input_stream_params ? &input_params : NULL, output_stream_params ? &output_params : NULL, target_sample_rate, data_callback, user_ptr, CUBEB_RESAMPLER_QUALITY_DEFAULT); if (!stm->resampler) { LOG("Failed to create resampler"); opensl_stream_destroy(stm); return CUBEB_ERROR; } *stream = stm; LOG("Cubeb stream (%p) init success", stm); return CUBEB_OK; } static int opensl_start_player(cubeb_stream * stm) { assert(stm->playerObj); SLuint32 playerState; (*stm->playerObj)->GetState(stm->playerObj, &playerState); if (playerState == SL_OBJECT_STATE_REALIZED) { SLresult res = (*stm->play)->SetPlayState(stm->play, SL_PLAYSTATE_PLAYING); if(res != SL_RESULT_SUCCESS) { LOG("Failed to start player. Error code: %lu", res); return CUBEB_ERROR; } } return CUBEB_OK; } static int opensl_start_recorder(cubeb_stream * stm) { assert(stm->recorderObj); SLuint32 recorderState; (*stm->recorderObj)->GetState(stm->recorderObj, &recorderState); if (recorderState == SL_OBJECT_STATE_REALIZED) { SLresult res = (*stm->recorderItf)->SetRecordState(stm->recorderItf, SL_RECORDSTATE_RECORDING); if(res != SL_RESULT_SUCCESS) { LOG("Failed to start recorder. Error code: %lu", res); return CUBEB_ERROR; } } return CUBEB_OK; } static int opensl_stream_start(cubeb_stream * stm) { assert(stm); int r = pthread_mutex_lock(&stm->mutex); assert(r == 0); opensl_set_shutdown(stm, 0); opensl_set_draining(stm, 0); r = pthread_mutex_unlock(&stm->mutex); assert(r == 0); if (stm->playerObj) { r = opensl_start_player(stm); if (r != CUBEB_OK) { return r; } } if (stm->recorderObj) { int r = opensl_start_recorder(stm); if (r != CUBEB_OK) { return r; } } stm->state_callback(stm, stm->user_ptr, CUBEB_STATE_STARTED); LOG("Cubeb stream (%p) started", stm); return CUBEB_OK; } static int opensl_stop_player(cubeb_stream * stm) { assert(stm->playerObj); assert(stm->shutdown || stm->draining); SLresult res = (*stm->play)->SetPlayState(stm->play, SL_PLAYSTATE_PAUSED); if (res != SL_RESULT_SUCCESS) { LOG("Failed to stop player. Error code: %lu", res); return CUBEB_ERROR; } return CUBEB_OK; } static int opensl_stop_recorder(cubeb_stream * stm) { assert(stm->recorderObj); assert(stm->shutdown || stm->draining); SLresult res = (*stm->recorderItf)->SetRecordState(stm->recorderItf, SL_RECORDSTATE_PAUSED); if (res != SL_RESULT_SUCCESS) { LOG("Failed to stop recorder. Error code: %lu", res); return CUBEB_ERROR; } return CUBEB_OK; } static int opensl_stream_stop(cubeb_stream * stm) { assert(stm); int r = pthread_mutex_lock(&stm->mutex); assert(r == 0); opensl_set_shutdown(stm, 1); r = pthread_mutex_unlock(&stm->mutex); assert(r == 0); if (stm->playerObj) { r = opensl_stop_player(stm); if (r != CUBEB_OK) { return r; } } if (stm->recorderObj) { int r = opensl_stop_recorder(stm); if (r != CUBEB_OK) { return r; } } stm->state_callback(stm, stm->user_ptr, CUBEB_STATE_STOPPED); LOG("Cubeb stream (%p) stopped", stm); return CUBEB_OK; } static int opensl_destroy_recorder(cubeb_stream * stm) { assert(stm); assert(stm->recorderObj); if (stm->recorderBufferQueueItf) { SLresult res = (*stm->recorderBufferQueueItf)->Clear(stm->recorderBufferQueueItf); if (res != SL_RESULT_SUCCESS) { LOG("Failed to clear recorder buffer queue. Error code: %lu", res); return CUBEB_ERROR; } stm->recorderBufferQueueItf = NULL; for (uint32_t i = 0; i < stm->input_array_capacity; ++i) { free(stm->input_buffer_array[i]); } } (*stm->recorderObj)->Destroy(stm->recorderObj); stm->recorderObj = NULL; stm->recorderItf = NULL; if (stm->input_queue) { array_queue_destroy(stm->input_queue); } free(stm->input_silent_buffer); return CUBEB_OK; } static void opensl_stream_destroy(cubeb_stream * stm) { assert(stm->draining || stm->shutdown); if (stm->playerObj) { (*stm->playerObj)->Destroy(stm->playerObj); stm->playerObj = NULL; stm->play = NULL; stm->bufq = NULL; for (uint32_t i = 0; i < stm->queuebuf_capacity; ++i) { free(stm->queuebuf[i]); } } if (stm->recorderObj) { int r = opensl_destroy_recorder(stm); assert(r == CUBEB_OK); } if (stm->resampler) { cubeb_resampler_destroy(stm->resampler); } pthread_mutex_destroy(&stm->mutex); LOG("Cubeb stream (%p) destroyed", stm); free(stm); } static int opensl_stream_get_position(cubeb_stream * stm, uint64_t * position) { SLmillisecond msec; uint64_t samplerate; SLresult res; int r; uint32_t mixer_latency; uint32_t compensation_msec = 0; res = (*stm->play)->GetPosition(stm->play, &msec); if (res != SL_RESULT_SUCCESS) return CUBEB_ERROR; struct timespec t; clock_gettime(CLOCK_MONOTONIC, &t); if(stm->lastPosition == msec) { compensation_msec = (t.tv_sec*1000000000LL + t.tv_nsec - stm->lastPositionTimeStamp) / 1000000; } else { stm->lastPositionTimeStamp = t.tv_sec*1000000000LL + t.tv_nsec; stm->lastPosition = msec; } samplerate = stm->inputrate; r = stm->context->get_output_latency(&mixer_latency, AUDIO_STREAM_TYPE_MUSIC); if (r) { return CUBEB_ERROR; } pthread_mutex_lock(&stm->mutex); int64_t maximum_position = stm->written * (int64_t)stm->inputrate / stm->output_configured_rate; pthread_mutex_unlock(&stm->mutex); assert(maximum_position >= 0); if (msec > mixer_latency) { int64_t unadjusted_position; if (stm->lastCompensativePosition > msec + compensation_msec) { // Over compensation, use lastCompensativePosition. unadjusted_position = samplerate * (stm->lastCompensativePosition - mixer_latency) / 1000; } else { unadjusted_position = samplerate * (msec - mixer_latency + compensation_msec) / 1000; stm->lastCompensativePosition = msec + compensation_msec; } *position = unadjusted_position < maximum_position ? unadjusted_position : maximum_position; } else { *position = 0; } return CUBEB_OK; } int opensl_stream_get_latency(cubeb_stream * stm, uint32_t * latency) { int r; uint32_t mixer_latency; // The latency returned by AudioFlinger is in ms. /* audio_stream_type_t is an int, so this is okay. */ r = stm->context->get_output_latency(&mixer_latency, AUDIO_STREAM_TYPE_MUSIC); if (r) { return CUBEB_ERROR; } *latency = stm->latency_frames + // OpenSL latency mixer_latency * stm->inputrate / 1000; // AudioFlinger latency return CUBEB_OK; } int opensl_stream_set_volume(cubeb_stream * stm, float volume) { SLresult res; SLmillibel max_level, millibels; float unclamped_millibels; res = (*stm->volume)->GetMaxVolumeLevel(stm->volume, &max_level); if (res != SL_RESULT_SUCCESS) { return CUBEB_ERROR; } /* millibels are 100*dB, so the conversion from the volume's linear amplitude * is 100 * 20 * log(volume). However we clamp the resulting value before * passing it to lroundf() in order to prevent it from silently returning an * erroneous value when the unclamped value exceeds the size of a long. */ unclamped_millibels = 100.0f * 20.0f * log10f(fmaxf(volume, 0.0f)); unclamped_millibels = fmaxf(unclamped_millibels, SL_MILLIBEL_MIN); unclamped_millibels = fminf(unclamped_millibels, max_level); millibels = lroundf(unclamped_millibels); res = (*stm->volume)->SetVolumeLevel(stm->volume, millibels); if (res != SL_RESULT_SUCCESS) { return CUBEB_ERROR; } return CUBEB_OK; } static struct cubeb_ops const opensl_ops = { .init = opensl_init, .get_backend_id = opensl_get_backend_id, .get_max_channel_count = opensl_get_max_channel_count, .get_min_latency = opensl_get_min_latency, .get_preferred_sample_rate = opensl_get_preferred_sample_rate, .get_preferred_channel_layout = NULL, .enumerate_devices = NULL, .device_collection_destroy = NULL, .destroy = opensl_destroy, .stream_init = opensl_stream_init, .stream_destroy = opensl_stream_destroy, .stream_start = opensl_stream_start, .stream_stop = opensl_stream_stop, .stream_reset_default_device = NULL, .stream_get_position = opensl_stream_get_position, .stream_get_latency = opensl_stream_get_latency, .stream_set_volume = opensl_stream_set_volume, .stream_set_panning = NULL, .stream_get_current_device = NULL, .stream_device_destroy = NULL, .stream_register_device_changed_callback = NULL, .register_device_collection_changed = NULL };