libavfilter/dnn: add prefix ff_ for internal functions

from proc_from_frame_to_dnn to ff_proc_from_frame_to_dnn, and
from proc_from_dnn_to_frame to ff_proc_from_dnn_to_frame.
Signed-off-by: Guo, Yejun <yejun.guo@intel.com>

libavfilter/dnn/dnn_backend_native.c

@@ -320,7 +320,7 @@ static DNNReturnType execute_model_native(const DNNModel *model, const char *inp
         if (native_model->model->pre_proc != NULL) {
             native_model->model->pre_proc(in_frame, &input, native_model->model->filter_ctx);
         } else {
-            proc_from_frame_to_dnn(in_frame, &input, ctx);
+            ff_proc_from_frame_to_dnn(in_frame, &input, ctx);
         }
     }
 
@@ -368,7 +368,7 @@ static DNNReturnType execute_model_native(const DNNModel *model, const char *inp
             if (native_model->model->post_proc != NULL) {
                 native_model->model->post_proc(out_frame, &output, native_model->model->filter_ctx);
             } else {
-                proc_from_dnn_to_frame(out_frame, &output, ctx);
+                ff_proc_from_dnn_to_frame(out_frame, &output, ctx);
             }
         } else {
             out_frame->width = output.width;

libavfilter/dnn/dnn_backend_openvino.c

@@ -160,7 +160,7 @@ static DNNReturnType fill_model_input_ov(OVModel *ov_model, RequestItem *request
             if (ov_model->model->pre_proc != NULL) {
                 ov_model->model->pre_proc(task->in_frame, &input, ov_model->model->filter_ctx);
             } else {
-                proc_from_frame_to_dnn(task->in_frame, &input, ctx);
+                ff_proc_from_frame_to_dnn(task->in_frame, &input, ctx);
             }
         }
         input.data = (uint8_t *)input.data
@@ -228,7 +228,7 @@ static void infer_completion_callback(void *args)
             if (task->ov_model->model->post_proc != NULL) {
                 task->ov_model->model->post_proc(task->out_frame, &output, task->ov_model->model->filter_ctx);
             } else {
-                proc_from_dnn_to_frame(task->out_frame, &output, ctx);
+                ff_proc_from_dnn_to_frame(task->out_frame, &output, ctx);
             }
         } else {
             task->out_frame->width = output.width;

libavfilter/dnn/dnn_backend_tf.c

@@ -743,7 +743,7 @@ static DNNReturnType execute_model_tf(const DNNModel *model, const char *input_n
         if (tf_model->model->pre_proc != NULL) {
             tf_model->model->pre_proc(in_frame, &input, tf_model->model->filter_ctx);
         } else {
-            proc_from_frame_to_dnn(in_frame, &input, ctx);
+            ff_proc_from_frame_to_dnn(in_frame, &input, ctx);
         }
     }
 
@@ -800,7 +800,7 @@ static DNNReturnType execute_model_tf(const DNNModel *model, const char *input_n
             if (tf_model->model->post_proc != NULL) {
                 tf_model->model->post_proc(out_frame, &output, tf_model->model->filter_ctx);
             } else {
-                proc_from_dnn_to_frame(out_frame, &output, ctx);
+                ff_proc_from_dnn_to_frame(out_frame, &output, ctx);
             }
         } else {
             out_frame->width = output.width;

libavfilter/dnn/dnn_io_proc.c

@@ -22,7 +22,7 @@
 #include "libavutil/imgutils.h"
 #include "libswscale/swscale.h"
 
-DNNReturnType proc_from_dnn_to_frame(AVFrame *frame, DNNData *output, void *log_ctx)
+DNNReturnType ff_proc_from_dnn_to_frame(AVFrame *frame, DNNData *output, void *log_ctx)
 {
     struct SwsContext *sws_ctx;
     int bytewidth = av_image_get_linesize(frame->format, frame->width, 0);
@@ -92,7 +92,7 @@ DNNReturnType proc_from_dnn_to_frame(AVFrame *frame, DNNData *output, void *log_
     return DNN_SUCCESS;
 }
 
-DNNReturnType proc_from_frame_to_dnn(AVFrame *frame, DNNData *input, void *log_ctx)
+DNNReturnType ff_proc_from_frame_to_dnn(AVFrame *frame, DNNData *input, void *log_ctx)
 {
     struct SwsContext *sws_ctx;
     int bytewidth = av_image_get_linesize(frame->format, frame->width, 0);

libavfilter/dnn/dnn_io_proc.h

@@ -30,7 +30,7 @@
 #include "../dnn_interface.h"
 #include "libavutil/frame.h"
 
-DNNReturnType proc_from_frame_to_dnn(AVFrame *frame, DNNData *input, void *log_ctx);
-DNNReturnType proc_from_dnn_to_frame(AVFrame *frame, DNNData *output, void *log_ctx);
+DNNReturnType ff_proc_from_frame_to_dnn(AVFrame *frame, DNNData *input, void *log_ctx);
+DNNReturnType ff_proc_from_dnn_to_frame(AVFrame *frame, DNNData *output, void *log_ctx);
 
 #endif