Initial setup for CLion

MediaClient/rtp/mpeg4.cpp

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+/***************************************************************************************
+ *
+ *  IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
+ *
+ *  By downloading, copying, installing or using the software you agree to this license.
+ *  If you do not agree to this license, do not download, install, 
+ *  copy or use the software.
+ *
+ *  Copyright (C) 2014-2024, Happytimesoft Corporation, all rights reserved.
+ *
+ *  Redistribution and use in binary forms, with or without modification, are permitted.
+ *
+ *  Unless required by applicable law or agreed to in writing, software distributed 
+ *  under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+ *  CONDITIONS OF ANY KIND, either express or implied. See the License for the specific
+ *  language governing permissions and limitations under the License.
+ *
+****************************************************************************************/
+
+#include "sys_inc.h"
+#include "mpeg4.h"
+
+
+static BOOL mpeg4_get_nibble(char const*& configStr, uint8& resultNibble) 
+{
+    char c = configStr[0];
+    if (c == '\0')
+    {
+        return FALSE; // we've reached the end
+    }
+    
+    if (c >= '0' && c <= '9') 
+    {
+        resultNibble = c - '0';
+    } 
+    else if (c >= 'A' && c <= 'F') 
+    {
+        resultNibble = 10 + c - 'A';
+    } 
+    else if (c >= 'a' && c <= 'f') 
+    {
+        resultNibble = 10 + c - 'a';
+    } 
+    else 
+    {
+        return FALSE;
+    }
+
+    ++configStr; // move to the next nibble
+    
+    return TRUE;
+}
+
+static BOOL mpeg4_get_byte(char const*& configStr, uint8& resultByte) 
+{
+    resultByte = 0; // by default, in case parsing fails
+
+    uint8 firstNibble;
+    if (!mpeg4_get_nibble(configStr, firstNibble))
+    {
+        return FALSE;
+    }
+    
+    resultByte = firstNibble << 4;
+
+    uint8 secondNibble = 0;
+    if (!mpeg4_get_nibble(configStr, secondNibble) && configStr[0] != '\0') 
+    {
+        // There's a second nibble, but it's malformed
+        return FALSE;
+    }
+    
+    resultByte |= secondNibble;
+
+    return TRUE;
+}
+
+uint8 * mpeg4_parse_config(char const* configStr, uint32& configSize)
+{
+    uint8 * config = NULL;
+    
+    do 
+    {
+        if (configStr == NULL)
+        {
+            break;
+        }
+        
+        configSize = ((int)strlen(configStr)+1)/2;
+
+        config = (uint8 *) malloc(configSize);
+        if (config == NULL)
+        {
+            break;
+        }
+
+        uint32 i;
+        
+        for (i = 0; i < configSize; ++i) 
+        {
+            if (!mpeg4_get_byte(configStr, config[i]))
+            {
+                break;
+            }
+        }
+        
+        if (i != configSize)
+        {
+            break; // part of the string was bad
+        }
+        
+        return config;
+    } while (0);
+
+    configSize = 0;
+    
+    if (config)
+    {
+        free(config);
+    }
+    
+    return NULL;
+}
+
+
+