#include "libavutil/opt.h"
#include "libavutil/avstring.h"
#include "../internal.h"
+#include "queue.h"
+#include "safe_queue.h"
#include <c_api/ie_c_api.h>
typedef struct OVOptions{
char *device_type;
+ int nireq;
} OVOptions;
typedef struct OVContext {
ie_network_t *network;
ie_executable_network_t *exe_network;
ie_infer_request_t *infer_request;
+
+ /* for async execution */
+ safe_queue *request_queue; // holds RequestItem
+ queue *task_queue; // holds TaskItem
} OVModel;
typedef struct TaskItem {
const char *output_name;
AVFrame *out_frame;
int do_ioproc;
+ int async;
int done;
} TaskItem;
typedef struct RequestItem {
ie_infer_request_t *infer_request;
TaskItem *task;
+ ie_complete_call_back_t callback;
} RequestItem;
#define APPEND_STRING(generated_string, iterate_string) \
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM
static const AVOption dnn_openvino_options[] = {
{ "device", "device to run model", OFFSET(options.device_type), AV_OPT_TYPE_STRING, { .str = "CPU" }, 0, 0, FLAGS },
+ { "nireq", "number of request", OFFSET(options.nireq), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FLAGS },
{ NULL }
};
task->out_frame->height = output.height;
}
ie_blob_free(&output_blob);
+
+ if (task->async) {
+ request->task = NULL;
+ safe_queue_push_back(task->ov_model->request_queue, request);
+ }
+
task->done = 1;
}
return ret;
}
- status = ie_infer_request_infer(request->infer_request);
- if (status != OK) {
- av_log(ctx, AV_LOG_ERROR, "Failed to start synchronous model inference\n");
- return DNN_ERROR;
+ if (task->async) {
+ request->task = task;
+ status = ie_infer_set_completion_callback(request->infer_request, &request->callback);
+ if (status != OK) {
+ av_log(ctx, AV_LOG_ERROR, "Failed to set completion callback for inference\n");
+ return DNN_ERROR;
+ }
+ status = ie_infer_request_infer_async(request->infer_request);
+ if (status != OK) {
+ av_log(ctx, AV_LOG_ERROR, "Failed to start async inference\n");
+ return DNN_ERROR;
+ }
+ return DNN_SUCCESS;
+ } else {
+ status = ie_infer_request_infer(request->infer_request);
+ if (status != OK) {
+ av_log(ctx, AV_LOG_ERROR, "Failed to start synchronous model inference\n");
+ return DNN_ERROR;
+ }
+ request->task = task;
+ infer_completion_callback(request);
+ return task->done ? DNN_SUCCESS : DNN_ERROR;
}
-
- request->task = task;
- infer_completion_callback(request);
-
- return task->done ? DNN_SUCCESS : DNN_ERROR;
}
static DNNReturnType get_input_ov(void *model, DNNData *input, const char *input_name)
task.done = 0;
task.do_ioproc = 0;
+ task.async = 0;
task.input_name = input_name;
task.in_frame = in_frame;
task.output_name = output_name;
goto err;
}
+ // create infer_request for sync execution
status = ie_exec_network_create_infer_request(ov_model->exe_network, &ov_model->infer_request);
if (status != OK)
goto err;
+ // create infer_requests for async execution
+ if (ctx->options.nireq <= 0) {
+ // the default value is a rough estimation
+ ctx->options.nireq = av_cpu_count() / 2 + 1;
+ }
+
+ ov_model->request_queue = safe_queue_create();
+ if (!ov_model->request_queue) {
+ goto err;
+ }
+
+ for (int i = 0; i < ctx->options.nireq; i++) {
+ ie_infer_request_t *request;
+ RequestItem *item = av_mallocz(sizeof(*item));
+ if (!item) {
+ goto err;
+ }
+ status = ie_exec_network_create_infer_request(ov_model->exe_network, &request);
+ if (status != OK) {
+ av_freep(&item);
+ goto err;
+ }
+ item->infer_request = request;
+ item->callback.completeCallBackFunc = infer_completion_callback;
+ item->callback.args = item;
+ safe_queue_push_back(ov_model->request_queue, item);
+ }
+
+ ov_model->task_queue = queue_create();
+ if (!ov_model->task_queue) {
+ goto err;
+ }
+
model->get_input = &get_input_ov;
model->get_output = &get_output_ov;
model->options = options;
task.done = 0;
task.do_ioproc = 1;
+ task.async = 0;
task.input_name = input_name;
task.in_frame = in_frame;
task.output_name = output_names[0];
return execute_model_ov(&task, &request);
}
+DNNReturnType ff_dnn_execute_model_async_ov(const DNNModel *model, const char *input_name, AVFrame *in_frame,
+ const char **output_names, uint32_t nb_output, AVFrame *out_frame)
+{
+ OVModel *ov_model = (OVModel *)model->model;
+ OVContext *ctx = &ov_model->ctx;
+ RequestItem *request;
+ TaskItem *task;
+
+ if (!in_frame) {
+ av_log(ctx, AV_LOG_ERROR, "in frame is NULL when async execute model.\n");
+ return DNN_ERROR;
+ }
+
+ if (!out_frame) {
+ av_log(ctx, AV_LOG_ERROR, "out frame is NULL when async execute model.\n");
+ return DNN_ERROR;
+ }
+
+ task = av_malloc(sizeof(*task));
+ if (!task) {
+ av_log(ctx, AV_LOG_ERROR, "unable to alloc memory for task item.\n");
+ return DNN_ERROR;
+ }
+
+ task->done = 0;
+ task->do_ioproc = 1;
+ task->async = 1;
+ task->input_name = input_name;
+ task->in_frame = in_frame;
+ task->output_name = output_names[0];
+ task->out_frame = out_frame;
+ task->ov_model = ov_model;
+ queue_push_back(ov_model->task_queue, task);
+
+ request = safe_queue_pop_front(ov_model->request_queue);
+ if (!request) {
+ av_log(ctx, AV_LOG_ERROR, "unable to get infer request.\n");
+ return DNN_ERROR;
+ }
+
+ return execute_model_ov(task, request);
+}
+
+DNNAsyncStatusType ff_dnn_get_async_result_ov(const DNNModel *model, AVFrame **in, AVFrame **out)
+{
+ OVModel *ov_model = (OVModel *)model->model;
+ TaskItem *task = queue_peek_front(ov_model->task_queue);
+
+ if (!task) {
+ return DAST_EMPTY_QUEUE;
+ }
+
+ if (!task->done) {
+ return DAST_NOT_READY;
+ }
+
+ *in = task->in_frame;
+ *out = task->out_frame;
+ queue_pop_front(ov_model->task_queue);
+ av_freep(&task);
+
+ return DAST_SUCCESS;
+}
+
void ff_dnn_free_model_ov(DNNModel **model)
{
if (*model){
OVModel *ov_model = (OVModel *)(*model)->model;
+ while (safe_queue_size(ov_model->request_queue) != 0) {
+ RequestItem *item = safe_queue_pop_front(ov_model->request_queue);
+ if (item && item->infer_request) {
+ ie_infer_request_free(&item->infer_request);
+ }
+ av_freep(&item);
+ }
+ safe_queue_destroy(ov_model->request_queue);
+
+ while (queue_size(ov_model->task_queue) != 0) {
+ TaskItem *item = queue_pop_front(ov_model->task_queue);
+ av_freep(&item);
+ }
+ queue_destroy(ov_model->task_queue);
+
if (ov_model->infer_request)
ie_infer_request_free(&ov_model->infer_request);
if (ov_model->exe_network)