REVIEWED: Some functions input parametes that should be `const`

src/raudio.c

@@ -1407,7 +1407,7 @@ Music LoadMusicStream(const char *fileName)
 
 // Load music stream from memory buffer, fileType refers to extension: i.e. ".wav"
 // WARNING: File extension must be provided in lower-case
-Music LoadMusicStreamFromMemory(const char *fileType, unsigned char *data, int dataSize)
+Music LoadMusicStreamFromMemory(const char *fileType, const unsigned char *data, int dataSize)
 {
     Music music = { 0 };
     bool musicLoaded = false;

src/raylib.h

@@ -1059,10 +1059,10 @@ RLAPI void ClearDroppedFiles(void);                               // Clear dropp
 RLAPI long GetFileModTime(const char *fileName);                  // Get file modification time (last write time)
 
 // Compression/Encoding functionality
-RLAPI unsigned char *CompressData(unsigned char *data, int dataLength, int *compDataLength);        // Compress data (DEFLATE algorithm)
-RLAPI unsigned char *DecompressData(unsigned char *compData, int compDataLength, int *dataLength);  // Decompress data (DEFLATE algorithm)
-RLAPI char *EncodeDataBase64(const unsigned char *data, int dataLength, int *outputLength);         // Encode data to Base64 string
-RLAPI unsigned char *DecodeDataBase64(unsigned char *data, int *outputLength);                      // Decode Base64 string data
+RLAPI unsigned char *CompressData(const unsigned char *data, int dataLength, int *compDataLength);        // Compress data (DEFLATE algorithm)
+RLAPI unsigned char *DecompressData(const unsigned char *compData, int compDataLength, int *dataLength);  // Decompress data (DEFLATE algorithm)
+RLAPI char *EncodeDataBase64(const unsigned char *data, int dataLength, int *outputLength);               // Encode data to Base64 string
+RLAPI unsigned char *DecodeDataBase64(const unsigned char *data, int *outputLength);                      // Decode Base64 string data
 
 // Persistent storage management
 RLAPI bool SaveStorageValue(unsigned int position, int value);    // Save integer value to storage file (to defined position), returns true on success
@@ -1338,7 +1338,7 @@ RLAPI void DrawText(const char *text, int posX, int posY, int fontSize, Color co
 RLAPI void DrawTextEx(Font font, const char *text, Vector2 position, float fontSize, float spacing, Color tint); // Draw text using font and additional parameters
 RLAPI void DrawTextPro(Font font, const char *text, Vector2 position, Vector2 origin, float rotation, float fontSize, float spacing, Color tint); // Draw text using Font and pro parameters (rotation)
 RLAPI void DrawTextCodepoint(Font font, int codepoint, Vector2 position, float fontSize, Color tint); // Draw one character (codepoint)
-RLAPI void DrawTextCodepoints(Font font, int *codepoints, int count, Vector2 position, float fontSize, float spacing, Color tint); // Draw multiple character (codepoint)
+RLAPI void DrawTextCodepoints(Font font, const int *codepoints, int count, Vector2 position, float fontSize, float spacing, Color tint); // Draw multiple character (codepoint)
 
 // Text font info functions
 RLAPI int MeasureText(const char *text, int fontSize);                                      // Measure string width for default font
@@ -1353,7 +1353,7 @@ RLAPI void UnloadCodepoints(int *codepoints);                         // Unload
 RLAPI int GetCodepointCount(const char *text);                        // Get total number of codepoints in a UTF-8 encoded string
 RLAPI int GetCodepoint(const char *text, int *bytesProcessed);        // Get next codepoint in a UTF-8 encoded string, 0x3f('?') is returned on failure
 RLAPI const char *CodepointToUTF8(int codepoint, int *byteSize);      // Encode one codepoint into UTF-8 byte array (array length returned as parameter)
-RLAPI char *TextCodepointsToUTF8(int *codepoints, int length);        // Encode text as codepoints array into UTF-8 text string (WARNING: memory must be freed!)
+RLAPI char *TextCodepointsToUTF8(const int *codepoints, int length);  // Encode text as codepoints array into UTF-8 text string (WARNING: memory must be freed!)
 
 // Text strings management functions (no UTF-8 strings, only byte chars)
 // NOTE: Some strings allocate memory internally for returned strings, just be careful!
@@ -1423,7 +1423,7 @@ RLAPI void DrawBillboardPro(Camera camera, Texture2D texture, Rectangle source,
 
 // Mesh management functions
 RLAPI void UploadMesh(Mesh *mesh, bool dynamic);                                            // Upload mesh vertex data in GPU and provide VAO/VBO ids
-RLAPI void UpdateMeshBuffer(Mesh mesh, int index, void *data, int dataSize, int offset);    // Update mesh vertex data in GPU for a specific buffer index
+RLAPI void UpdateMeshBuffer(Mesh mesh, int index, const void *data, int dataSize, int offset); // Update mesh vertex data in GPU for a specific buffer index
 RLAPI void UnloadMesh(Mesh mesh);                                                           // Unload mesh data from CPU and GPU
 RLAPI void DrawMesh(Mesh mesh, Material material, Matrix transform);                        // Draw a 3d mesh with material and transform
 RLAPI void DrawMeshInstanced(Mesh mesh, Material material, const Matrix *transforms, int instances); // Draw multiple mesh instances with material and different transforms
@@ -1511,7 +1511,7 @@ RLAPI void UnloadWaveSamples(float *samples);                         // Unload
 
 // Music management functions
 RLAPI Music LoadMusicStream(const char *fileName);                    // Load music stream from file
-RLAPI Music LoadMusicStreamFromMemory(const char *fileType, unsigned char *data, int dataSize); // Load music stream from data
+RLAPI Music LoadMusicStreamFromMemory(const char *fileType, const unsigned char *data, int dataSize); // Load music stream from data
 RLAPI void UnloadMusicStream(Music music);                            // Unload music stream
 RLAPI void PlayMusicStream(Music music);                              // Start music playing
 RLAPI bool IsMusicStreamPlaying(Music music);                         // Check if music is playing

src/rcore.c

@@ -3181,7 +3181,7 @@ long GetFileModTime(const char *fileName)
 }
 
 // Compress data (DEFLATE algorythm)
-unsigned char *CompressData(unsigned char *data, int dataLength, int *compDataLength)
+unsigned char *CompressData(const unsigned char *data, int dataLength, int *compDataLength)
 {
     #define COMPRESSION_QUALITY_DEFLATE  8
 
@@ -3201,7 +3201,7 @@ unsigned char *CompressData(unsigned char *data, int dataLength, int *compDataLe
 }
 
 // Decompress data (DEFLATE algorythm)
-unsigned char *DecompressData(unsigned char *compData, int compDataLength, int *dataLength)
+unsigned char *DecompressData(const unsigned char *compData, int compDataLength, int *dataLength)
 {
     unsigned char *data = NULL;
 
@@ -3259,7 +3259,7 @@ char *EncodeDataBase64(const unsigned char *data, int dataLength, int *outputLen
 }
 
 // Decode Base64 string data
-unsigned char *DecodeDataBase64(unsigned char *data, int *outputLength)
+unsigned char *DecodeDataBase64(const unsigned char *data, int *outputLength)
 {
     static const unsigned char base64decodeTable[] = {
         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,

src/rlgl.h

@@ -620,23 +620,24 @@ RLAPI void rlSetTexture(unsigned int id);           // Set current texture for r
 
 // Vertex buffers management
 RLAPI unsigned int rlLoadVertexArray(void);                               // Load vertex array (vao) if supported
-RLAPI unsigned int rlLoadVertexBuffer(void *buffer, int size, bool dynamic);            // Load a vertex buffer attribute
-RLAPI unsigned int rlLoadVertexBufferElement(void *buffer, int size, bool dynamic);     // Load a new attributes element buffer
-RLAPI void rlUpdateVertexBuffer(unsigned int bufferId, void *data, int dataSize, int offset);    // Update GPU buffer with new data
+RLAPI unsigned int rlLoadVertexBuffer(const void *buffer, int size, bool dynamic);            // Load a vertex buffer attribute
+RLAPI unsigned int rlLoadVertexBufferElement(const void *buffer, int size, bool dynamic);     // Load a new attributes element buffer
+RLAPI void rlUpdateVertexBuffer(unsigned int bufferId, const void *data, int dataSize, int offset);     // Update GPU buffer with new data
+RLAPI void rlUpdateVertexBufferElements(unsigned int id, const void *data, int dataSize, int offset);   // Update vertex buffer elements with new data
 RLAPI void rlUnloadVertexArray(unsigned int vaoId);
 RLAPI void rlUnloadVertexBuffer(unsigned int vboId);
-RLAPI void rlSetVertexAttribute(unsigned int index, int compSize, int type, bool normalized, int stride, void *pointer);
+RLAPI void rlSetVertexAttribute(unsigned int index, int compSize, int type, bool normalized, int stride, const void *pointer);
 RLAPI void rlSetVertexAttributeDivisor(unsigned int index, int divisor);
 RLAPI void rlSetVertexAttributeDefault(int locIndex, const void *value, int attribType, int count); // Set vertex attribute default value
 RLAPI void rlDrawVertexArray(int offset, int count);
-RLAPI void rlDrawVertexArrayElements(int offset, int count, void *buffer);
+RLAPI void rlDrawVertexArrayElements(int offset, int count, const void *buffer);
 RLAPI void rlDrawVertexArrayInstanced(int offset, int count, int instances);
-RLAPI void rlDrawVertexArrayElementsInstanced(int offset, int count, void *buffer, int instances);
+RLAPI void rlDrawVertexArrayElementsInstanced(int offset, int count, const void *buffer, int instances);
 
 // Textures management
-RLAPI unsigned int rlLoadTexture(void *data, int width, int height, int format, int mipmapCount); // Load texture in GPU
+RLAPI unsigned int rlLoadTexture(const void *data, int width, int height, int format, int mipmapCount); // Load texture in GPU
 RLAPI unsigned int rlLoadTextureDepth(int width, int height, bool useRenderBuffer);               // Load depth texture/renderbuffer (to be attached to fbo)
-RLAPI unsigned int rlLoadTextureCubemap(void *data, int size, int format);                        // Load texture cubemap
+RLAPI unsigned int rlLoadTextureCubemap(const void *data, int size, int format);                        // Load texture cubemap
 RLAPI void rlUpdateTexture(unsigned int id, int offsetX, int offsetY, int width, int height, int format, const void *data);  // Update GPU texture with new data
 RLAPI void rlGetGlTextureFormats(int format, int *glInternalFormat, int *glFormat, int *glType);  // Get OpenGL internal formats
 RLAPI const char *rlGetPixelFormatName(unsigned int format);              // Get name string for pixel format
@@ -2682,7 +2683,7 @@ bool rlCheckRenderBatchLimit(int vCount)
 // Textures data management
 //-----------------------------------------------------------------------------------------
 // Convert image data to OpenGL texture (returns OpenGL valid Id)
-unsigned int rlLoadTexture(void *data, int width, int height, int format, int mipmapCount)
+unsigned int rlLoadTexture(const void *data, int width, int height, int format, int mipmapCount)
 {
     glBindTexture(GL_TEXTURE_2D, 0);    // Free any old binding
 
@@ -2884,7 +2885,7 @@ unsigned int rlLoadTextureDepth(int width, int height, bool useRenderBuffer)
 // Load texture cubemap
 // NOTE: Cubemap data is expected to be 6 images in a single data array (one after the other),
 // expected the following convention: +X, -X, +Y, -Y, +Z, -Z
-unsigned int rlLoadTextureCubemap(void *data, int size, int format)
+unsigned int rlLoadTextureCubemap(const void *data, int size, int format)
 {
     unsigned int id = 0;
 
@@ -3319,7 +3320,7 @@ void rlUnloadFramebuffer(unsigned int id)
 // Vertex data management
 //-----------------------------------------------------------------------------------------
 // Load a new attributes buffer
-unsigned int rlLoadVertexBuffer(void *buffer, int size, bool dynamic)
+unsigned int rlLoadVertexBuffer(const void *buffer, int size, bool dynamic)
 {
     unsigned int id = 0;
 
@@ -3333,7 +3334,7 @@ unsigned int rlLoadVertexBuffer(void *buffer, int size, bool dynamic)
 }
 
 // Load a new attributes element buffer
-unsigned int rlLoadVertexBufferElement(void *buffer, int size, bool dynamic)
+unsigned int rlLoadVertexBufferElement(const void *buffer, int size, bool dynamic)
 {
     unsigned int id = 0;
 
@@ -3380,7 +3381,7 @@ void rlDisableVertexBufferElement(void)
 
 // Update vertex buffer with new data
 // NOTE: dataSize and offset must be provided in bytes
-void rlUpdateVertexBuffer(unsigned int id, void *data, int dataSize, int offset)
+void rlUpdateVertexBuffer(unsigned int id, const void *data, int dataSize, int offset)
 {
 #if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2)
     glBindBuffer(GL_ARRAY_BUFFER, id);
@@ -3390,7 +3391,7 @@ void rlUpdateVertexBuffer(unsigned int id, void *data, int dataSize, int offset)
 
 // Update vertex buffer elements with new data
 // NOTE: dataSize and offset must be provided in bytes
-void rlUpdateVertexBufferElements(unsigned int id, void *data, int dataSize, int offset)
+void rlUpdateVertexBufferElements(unsigned int id, const void *data, int dataSize, int offset)
 {
 #if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2)
     glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, id);
@@ -3443,9 +3444,9 @@ void rlDrawVertexArray(int offset, int count)
 }
 
 // Draw vertex array elements
-void rlDrawVertexArrayElements(int offset, int count, void *buffer)
+void rlDrawVertexArrayElements(int offset, int count, const void *buffer)
 {
-    glDrawElements(GL_TRIANGLES, count, GL_UNSIGNED_SHORT, (unsigned short *)buffer + offset);
+    glDrawElements(GL_TRIANGLES, count, GL_UNSIGNED_SHORT, (const unsigned short *)buffer + offset);
 }
 
 // Draw vertex array instanced
@@ -3457,10 +3458,10 @@ void rlDrawVertexArrayInstanced(int offset, int count, int instances)
 }
 
 // Draw vertex array elements instanced
-void rlDrawVertexArrayElementsInstanced(int offset, int count, void *buffer, int instances)
+void rlDrawVertexArrayElementsInstanced(int offset, int count, const void *buffer, int instances)
 {
 #if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2)
-    glDrawElementsInstanced(GL_TRIANGLES, count, GL_UNSIGNED_SHORT, (unsigned short *)buffer + offset, instances);
+    glDrawElementsInstanced(GL_TRIANGLES, count, GL_UNSIGNED_SHORT, (const unsigned short *)buffer + offset, instances);
 #endif
 }
 
@@ -3501,7 +3502,7 @@ unsigned int rlLoadVertexArray(void)
 }
 
 // Set vertex attribute
-void rlSetVertexAttribute(unsigned int index, int compSize, int type, bool normalized, int stride, void *pointer)
+void rlSetVertexAttribute(unsigned int index, int compSize, int type, bool normalized, int stride, const void *pointer)
 {
 #if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2)
     glVertexAttribPointer(index, compSize, type, normalized, stride, pointer);

src/rmodels.c

@@ -1174,7 +1174,7 @@ void UploadMesh(Mesh *mesh, bool dynamic)
 }
 
 // Update mesh vertex data in GPU for a specific buffer index
-void UpdateMeshBuffer(Mesh mesh, int index, void *data, int dataSize, int offset)
+void UpdateMeshBuffer(Mesh mesh, int index, const void *data, int dataSize, int offset)
 {
     rlUpdateVertexBuffer(mesh.vboId[index], data, dataSize, offset);
 }

src/rtext.c

@@ -1092,7 +1092,7 @@ void DrawTextCodepoint(Font font, int codepoint, Vector2 position, float fontSiz
 }
 
 // Draw multiple character (codepoints)
-void DrawTextCodepoints(Font font, int *codepoints, int count, Vector2 position, float fontSize, float spacing, Color tint)
+void DrawTextCodepoints(Font font, const int *codepoints, int count, Vector2 position, float fontSize, float spacing, Color tint)
 {
     int textOffsetY = 0;            // Offset between lines (on line break '\n')
     float textOffsetX = 0.0f;       // Offset X to next character to draw
@@ -1605,7 +1605,7 @@ const char *TextToPascal(const char *text)
 // Encode text codepoint into UTF-8 text
 // REQUIRES: memcpy()
 // WARNING: Allocated memory should be manually freed
-char *TextCodepointsToUTF8(int *codepoints, int length)
+char *TextCodepointsToUTF8(const int *codepoints, int length)
 {
     // We allocate enough memory fo fit all possible codepoints
     // NOTE: 5 bytes for every codepoint should be enough