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samples: intel_s1000: track status of audio app

Add a status check to start/stop audio in order to start
audio only if it's not already running and to stop audio
only if it is running.

Signed-off-by: Sathish Kuttan <sathish.k.kuttan@intel.com>
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sathishkuttan authored and nashif committed Jun 28, 2019
1 parent 75ff541 commit 47e2e624c8b020a20042765ccdfd952fe14b1439
Showing with 17 additions and 7 deletions.
  1. +17 −7 samples/boards/intel_s1000_crb/audio/src/audio_driver.c
@@ -41,7 +41,7 @@ LOG_MODULE_REGISTER(audio_io);
#define MIC_IN_BUF_COUNT 2
#define HOST_INOUT_BUF_COUNT 4 /* 2 for TX and 2 for RX */

static void audio_drv_thread(void *unused1, void *unused2, void *unused3);
static void audio_drv_thread(void);

__attribute__((section(".dma_buffers"))) static struct {
s32_t host_inout[HOST_INOUT_BUF_COUNT][HOST_FRAME_SAMPLES];
@@ -59,6 +59,7 @@ static struct k_mem_slab host_inout_mem_slab;
static struct k_mem_slab spk_out_mem_slab;

K_SEM_DEFINE(audio_drv_sync_sem, 0, 1);
static bool audio_io_started;

K_THREAD_DEFINE(audio_drv_thread_id, AUDIO_DRIVER_THREAD_STACKSIZE,
audio_drv_thread, NULL, NULL, NULL,
@@ -367,7 +368,13 @@ static void audio_driver_stop_periph_streams(void)

int audio_driver_start(void)
{
if (audio_io_started == true) {
LOG_INF("Audio I/O already started ...");
return 0;
}

LOG_INF("Starting Audio I/O...");

/*
* start the playback path first followed by the capture path
* This ensures that by the time the capture frame tick is
@@ -380,28 +387,31 @@ int audio_driver_start(void)
audio_driver_start_host_streams();
audio_driver_start_periph_streams();

audio_io_started = true;
k_sem_give(&audio_drv_sync_sem);

return 0;
}

int audio_driver_stop(void)
{
if (audio_io_started == false) {
LOG_INF("Audio I/O already stopped ...");
return 0;
}

k_sem_take(&audio_drv_sync_sem, K_FOREVER);
audio_driver_stop_host_streams();
audio_driver_stop_periph_streams();
audio_io_started = false;
LOG_INF("Stopped Audio I/O...");

return 0;
}

static void audio_drv_thread(void *unused1, void *unused2, void *unused3)
static void audio_drv_thread(void)
{
ARG_UNUSED(unused1);
ARG_UNUSED(unused2);
ARG_UNUSED(unused3);

LOG_INF("Starting Audio Driver thread (%p)", audio_drv_thread_id);
LOG_INF("Starting Audio Driver thread ,,,");

LOG_INF("Configuring Host Audio Streams ...");
audio_driver_config_host_streams();

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