/*static*/ int
jack_init (cubeb ** context, char const * context_name)
{
int r;
*context = NULL;
cubeb * ctx = (cubeb *)calloc(1, sizeof(*ctx));
if (ctx == NULL) {
return CUBEB_ERROR;
}
r = load_jack_lib(ctx);
if (r != 0) {
cbjack_destroy(ctx);
return CUBEB_ERROR;
}
api_jack_set_error_function(silent_jack_error_callback);
api_jack_set_info_function(silent_jack_error_callback);
ctx->ops = &cbjack_ops;
ctx->mutex = PTHREAD_MUTEX_INITIALIZER;
for (r = 0; r < MAX_STREAMS; r++) {
ctx->streams[r].mutex = PTHREAD_MUTEX_INITIALIZER;
}
const char * jack_client_name = "cubeb";
if (context_name)
jack_client_name = context_name;
ctx->jack_client = api_jack_client_open(jack_client_name,
JackNoStartServer,
NULL);
if (ctx->jack_client == NULL) {
cbjack_destroy(ctx);
return CUBEB_ERROR;
}
ctx->jack_xruns = 0;
api_jack_set_process_callback (ctx->jack_client, cbjack_process, ctx);
api_jack_set_xrun_callback (ctx->jack_client, cbjack_xrun_callback, ctx);
api_jack_set_graph_order_callback (ctx->jack_client, cbjack_graph_order_callback, ctx);
if (api_jack_activate (ctx->jack_client)) {
cbjack_destroy(ctx);
return CUBEB_ERROR;
}
ctx->jack_sample_rate = api_jack_get_sample_rate(ctx->jack_client);
ctx->jack_latency = 128 * 1000 / ctx->jack_sample_rate;
ctx->active = true;
*context = ctx;
return CUBEB_OK;
}
static int
cbjack_get_preferred_sample_rate(cubeb * ctx, uint32_t * rate)
{
if (!ctx->jack_client) {
jack_client_t * testclient = api_jack_client_open("test-samplerate",
JackNoStartServer,
NULL);
if (!testclient) {
return CUBEB_ERROR;
}
*rate = api_jack_get_sample_rate(testclient);
api_jack_client_close(testclient);
} else {
*rate = api_jack_get_sample_rate(ctx->jack_client);
}
return CUBEB_OK;
}
/*static*/ int
jack_init (cubeb ** context, char const * context_name)
{
int r;
if (context == NULL) {
return CUBEB_ERROR_INVALID_PARAMETER;
}
*context = NULL;
cubeb *ctx = (cubeb*)calloc(1, sizeof(*ctx));
if (ctx == NULL) {
return CUBEB_ERROR;
}
r = load_jack_lib(ctx);
if (r != 0) {
cbjack_destroy(ctx);
return CUBEB_ERROR;
}
r = pthread_mutex_init(&ctx->mutex, NULL);
if (r != 0) {
cbjack_destroy(ctx);
return CUBEB_ERROR;
}
ctx->ops = &cbjack_ops;
const char* jack_client_name = "cubeb";
if (context_name)
jack_client_name = context_name;
ctx->jack_client = api_jack_client_open(jack_client_name,
JackNoStartServer,
NULL);
if (ctx->jack_client == NULL) {
cbjack_destroy(ctx);
return CUBEB_ERROR;
}
ctx->jack_sample_rate = api_jack_get_sample_rate(ctx->jack_client);
api_jack_set_process_callback (ctx->jack_client, cbjack_process, ctx);
if (api_jack_activate (ctx->jack_client)) {
cbjack_destroy(ctx);
return CUBEB_ERROR;
}
for (int s = 0; s < MAX_STREAMS; s++) {
for (int c = 0; c < MAX_CHANNELS; c++) {
ctx->streams[s].ringbuffer[c] = api_jack_ringbuffer_create(FIFO_SIZE);
if (!ctx->streams[s].ringbuffer[c]) {
cbjack_destroy(ctx);
return CUBEB_ERROR;
}
}
}
ctx->active = true;
r = pthread_create (&ctx->stream_refill_thread, NULL, stream_refill_thread, (void *)ctx);
if (r != 0) {
ctx->stream_refill_thread = 0;
cbjack_destroy(ctx);
return CUBEB_ERROR;
}
*context = ctx;
return CUBEB_OK;
}
static int
cbjack_stream_init(cubeb * context, 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,
cubeb_data_callback data_callback,
cubeb_state_callback state_callback,
void * user_ptr)
{
int stream_actual_rate = 0;
int jack_rate = api_jack_get_sample_rate(context->jack_client);
if (output_stream_params
&& (output_stream_params->format != CUBEB_SAMPLE_FLOAT32NE &&
output_stream_params->format != CUBEB_SAMPLE_S16NE)
) {
return CUBEB_ERROR_INVALID_FORMAT;
}
if (input_stream_params
&& (input_stream_params->format != CUBEB_SAMPLE_FLOAT32NE &&
input_stream_params->format != CUBEB_SAMPLE_S16NE)
) {
return CUBEB_ERROR_INVALID_FORMAT;
}
*stream = NULL;
// Find a free stream.
pthread_mutex_lock(&context->mutex);
cubeb_stream * stm = context_alloc_stream(context, stream_name);
// No free stream?
if (stm == NULL) {
pthread_mutex_unlock(&context->mutex);
return CUBEB_ERROR;
}
// unlock context mutex
pthread_mutex_unlock(&context->mutex);
// Lock active stream
pthread_mutex_lock(&stm->mutex);
stm->ports_ready = false;
stm->user_ptr = user_ptr;
stm->context = context;
stm->devs = NONE;
if (output_stream_params && !input_stream_params) {
stm->out_params = *output_stream_params;
stream_actual_rate = stm->out_params.rate;
stm->out_params.rate = jack_rate;
stm->devs = OUT_ONLY;
if (stm->out_params.format == CUBEB_SAMPLE_FLOAT32NE) {
context->output_bytes_per_frame = sizeof(float);
} else {
context->output_bytes_per_frame = sizeof(short);
}
}
if (input_stream_params && output_stream_params) {
stm->in_params = *input_stream_params;
stm->out_params = *output_stream_params;
stream_actual_rate = stm->out_params.rate;
stm->in_params.rate = jack_rate;
stm->out_params.rate = jack_rate;
stm->devs = DUPLEX;
if (stm->out_params.format == CUBEB_SAMPLE_FLOAT32NE) {
context->output_bytes_per_frame = sizeof(float);
stm->in_params.format = CUBEB_SAMPLE_FLOAT32NE;
} else {
context->output_bytes_per_frame = sizeof(short);
stm->in_params.format = CUBEB_SAMPLE_S16NE;
}
} else if (input_stream_params && !output_stream_params) {
stm->in_params = *input_stream_params;
stream_actual_rate = stm->in_params.rate;
stm->in_params.rate = jack_rate;
stm->devs = IN_ONLY;
if (stm->in_params.format == CUBEB_SAMPLE_FLOAT32NE) {
context->output_bytes_per_frame = sizeof(float);
} else {
context->output_bytes_per_frame = sizeof(short);
}
}
stm->ratio = (float)stream_actual_rate / (float)jack_rate;
stm->data_callback = data_callback;
stm->state_callback = state_callback;
stm->position = 0;
stm->volume = 1.0f;
context->jack_buffer_size = api_jack_get_buffer_size(context->jack_client);
context->fragment_size = context->jack_buffer_size;
if (stm->devs == NONE) {
pthread_mutex_unlock(&stm->mutex);
return CUBEB_ERROR;
}
stm->resampler = NULL;
if (stm->devs == DUPLEX) {
stm->resampler = cubeb_resampler_create(stm,
&stm->in_params,
&stm->out_params,
stream_actual_rate,
stm->data_callback,
stm->user_ptr,
CUBEB_RESAMPLER_QUALITY_DESKTOP);
} else if (stm->devs == IN_ONLY) {
stm->resampler = cubeb_resampler_create(stm,
&stm->in_params,
nullptr,
stream_actual_rate,
stm->data_callback,
stm->user_ptr,
CUBEB_RESAMPLER_QUALITY_DESKTOP);
} else if (stm->devs == OUT_ONLY) {
stm->resampler = cubeb_resampler_create(stm,
nullptr,
&stm->out_params,
stream_actual_rate,
stm->data_callback,
stm->user_ptr,
CUBEB_RESAMPLER_QUALITY_DESKTOP);
}
if (!stm->resampler) {
stm->in_use = false;
pthread_mutex_unlock(&stm->mutex);
return CUBEB_ERROR;
}
if (stm->devs == DUPLEX || stm->devs == OUT_ONLY) {
for (unsigned int c = 0; c < stm->out_params.channels; c++) {
char portname[256];
snprintf(portname, 255, "%s_out_%d", stm->stream_name, c);
stm->output_ports[c] = api_jack_port_register(stm->context->jack_client,
portname,
JACK_DEFAULT_AUDIO_TYPE,
JackPortIsOutput,
0);
}
}
if (stm->devs == DUPLEX || stm->devs == IN_ONLY) {
for (unsigned int c = 0; c < stm->in_params.channels; c++) {
char portname[256];
snprintf(portname, 255, "%s_in_%d", stm->stream_name, c);
stm->input_ports[c] = api_jack_port_register(stm->context->jack_client,
portname,
JACK_DEFAULT_AUDIO_TYPE,
JackPortIsInput,
0);
}
}
cbjack_connect_ports(stm);
*stream = stm;
stm->ports_ready = true;
stm->pause = true;
pthread_mutex_unlock(&stm->mutex);
return CUBEB_OK;
}
