first commit

dsexample_lib/Makefile

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+################################################################################
+# Copyright (c) 2017-2019, NVIDIA CORPORATION.  All rights reserved.
+#
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the "Software"),
+# to deal in the Software without restriction, including without limitation
+# the rights to use, copy, modify, merge, publish, distribute, sublicense,
+# and/or sell copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+# DEALINGS IN THE SOFTWARE.
+#################################################################################
+
+all:
+	gcc -ggdb -c -o dsexample_lib.o -fPIC dsexample_lib.c
+	ar rcs libdsexample.a dsexample_lib.o

dsexample_lib/dsexample_lib.c

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+/**
+ * Copyright (c) 2017-2020, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include "dsexample_lib.h"
+#include <stdio.h>
+#include <stdlib.h>
+
+struct DsExampleCtx
+{
+    DsExampleInitParams initParams;
+};
+
+DsExampleCtx *
+DsExampleCtxInit (DsExampleInitParams * initParams)
+{
+    DsExampleCtx *ctx = (DsExampleCtx *) calloc (1, sizeof (DsExampleCtx));
+    ctx->initParams = *initParams;
+    return ctx;
+}
+
+// In case of an actual processing library, processing on data wil be completed
+// in this function and output will be returned
+DsExampleOutput *
+DsExampleProcess (DsExampleCtx * ctx, unsigned char *data)
+{
+    DsExampleOutput *out =
+        (DsExampleOutput*)calloc (1, sizeof (DsExampleOutput));
+
+    if (data != NULL)
+    {
+        // Process your data here
+    }
+    // Fill output structure using processed output
+    // Here, we fake some detected objects and labels
+    if (ctx->initParams.fullFrame)
+    {
+        out->numObjects = 2;
+        out->object[0] = (DsExampleObject)
+        {
+            (float)(ctx->initParams.processingWidth) / 8,
+                (float)(ctx->initParams.processingHeight) / 8,
+                (float)(ctx->initParams.processingWidth) / 8,
+                (float)(ctx->initParams.processingHeight) / 8, "Obj0"
+        };
+
+        out->object[1] = (DsExampleObject)
+        {
+            (float)(ctx->initParams.processingWidth) / 2,
+                (float)(ctx->initParams.processingHeight) / 2,
+                (float)(ctx->initParams.processingWidth) / 8,
+                (float)(ctx->initParams.processingHeight) / 8, "Obj1"
+        };
+    }
+    else
+    {
+        out->numObjects = 1;
+        out->object[0] = (DsExampleObject)
+        {
+            (float)(ctx->initParams.processingWidth) / 8,
+                (float)(ctx->initParams.processingHeight) / 8,
+                (float)(ctx->initParams.processingWidth) / 8,
+                (float)(ctx->initParams.processingHeight) / 8, ""
+        };
+        // Set the object label
+        snprintf (out->object[0].label, 64, "Obj_label");
+    }
+
+    return out;
+}
+
+void
+DsExampleCtxDeinit (DsExampleCtx * ctx)
+{
+    free (ctx);
+}

dsexample_lib/dsexample_lib.h

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+/**
+ * Copyright (c) 2017-2020, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef __DSEXAMPLE_LIB__
+#define __DSEXAMPLE_LIB__
+
+#define MAX_LABEL_SIZE 128
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct DsExampleCtx DsExampleCtx;
+
+// Init parameters structure as input, required for instantiating dsexample_lib
+typedef struct
+{
+  // Width at which frame/object will be scaled
+  int processingWidth;
+  // height at which frame/object will be scaled
+  int processingHeight;
+  // Flag to indicate whether operating on crops of full frame
+  int fullFrame;
+} DsExampleInitParams;
+
+// Detected/Labelled object structure, stores bounding box info along with label
+typedef struct
+{
+  float left;
+  float top;
+  float width;
+  float height;
+  char label[MAX_LABEL_SIZE];
+} DsExampleObject;
+
+// Output data returned after processing
+typedef struct
+{
+  int numObjects;
+  DsExampleObject object[4];
+} DsExampleOutput;
+
+// Initialize library context
+DsExampleCtx * DsExampleCtxInit (DsExampleInitParams *init_params);
+
+// Dequeue processed output
+DsExampleOutput *DsExampleProcess (DsExampleCtx *ctx, unsigned char *data);
+
+// Deinitialize library context
+void DsExampleCtxDeinit (DsExampleCtx *ctx);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif