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reworked to ElemBase *

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This commit is contained in:
CwTCwT
2018-06-09 23:29:50 +02:00
parent 5b4b16f360
commit 959c0e8907
4 changed files with 33 additions and 48 deletions
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73
code/BlenderCustomData.cpp
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@@ -1,5 +1,7 @@
#include "BlenderCustomData.h"
#include "BlenderDNA.h"
#include <array>
#include <functional>
namespace Assimp {
namespace Blender {
@@ -20,52 +22,32 @@ namespace Assimp {
/**
* @brief pointer to function read memory for n CustomData types
*/
typedef bool(*PRead)(void *pOut, const size_t cnt, const FileDatabase &db);
/**
* @brief pointer to function read memory for cnt CustomData types
*/
typedef uint8_t *(*PAlloc)(const size_t cnt);
typedef bool (*PRead)(ElemBase *pOut, const size_t cnt, const FileDatabase &db);
typedef ElemBase * (*PCreate)(const size_t cnt);
typedef void (*PDestroy)(ElemBase *);
/**
* @brief helper macro to define Structure specific read function
* for ex: when used like
*
* IMPL_STRUCT_READ(MLoop)
*
* following function is implemented
*
* bool readMLoop(void *v, const size_t cnt, const FileDatabase &db) {
* return read<MLoop>(db.dna["MLoop"], static_cast<MLoop *>(v), cnt, db);
* }
*/
#define IMPL_STRUCT_READ(ty) \
bool read##ty(void *v, const size_t cnt, const FileDatabase &db) { \
bool read##ty(ElemBase *v, const size_t cnt, const FileDatabase &db) { \
return read<ty>(db.dna[#ty], static_cast<ty *>(v), cnt, db); \
}
/**
* @brief helper macro to define Structure specific alloc function
* for ex: when used like
*
* IMPL_STRUCT_ALLOC(MLoop)
*
* following function is implemented
*
* void * allocMLoop(const size_t cnt) {
* return new uint8_t[cnt * sizeof MLoop];
* }
*/
#define IMPL_STRUCT_ALLOC(ty) \
uint8_t *alloc##ty(const size_t cnt) { \
return static_cast<uint8_t *>(malloc(cnt * sizeof(ty))); \
#define IMPL_STRUCT_CREATE(ty) \
ElemBase *create##ty(const size_t cnt) { \
return new ty[cnt]; \
}
#define IMPL_STRUCT_DESTROY(ty) \
void destroy##ty(ElemBase *p) { \
delete[]p; \
}
/**
* @brief helper macro to define Structure functions
*/
#define IMPL_STRUCT(ty) \
IMPL_STRUCT_ALLOC(ty) \
IMPL_STRUCT_READ(ty)
IMPL_STRUCT_READ(ty) \
IMPL_STRUCT_CREATE(ty) \
IMPL_STRUCT_DESTROY(ty)
// supported structures for CustomData
IMPL_STRUCT(MVert)
@@ -83,26 +65,29 @@ namespace Assimp {
*/
struct CustomDataTypeDescription {
PRead Read; ///< function to read one CustomData type element
PAlloc Alloc; ///< function to allocate n type elements
PCreate Create; ///< function to allocate n type elements
PDestroy Destroy;
CustomDataTypeDescription(PRead read, PAlloc alloc)
CustomDataTypeDescription(PRead read, PCreate create, PDestroy destroy)
: Read(read)
, Alloc(alloc)
, Create(create)
, Destroy(destroy)
{}
};
/**
* @brief helper macro to define Structure type specific CustomDataTypeDescription
* @note IMPL_STRUCT_READ for same ty must be used earlier to implement the typespecific read function
*/
#define DECL_STRUCT_CUSTOMDATATYPEDESCRIPTION(ty) \
CustomDataTypeDescription(&read##ty, &alloc##ty)
CustomDataTypeDescription{&read##ty, &create##ty, &destroy##ty}
/**
* @brief helper macro to define CustomDataTypeDescription for UNSUPPORTED type
*/
#define DECL_UNSUPPORTED_CUSTOMDATATYPEDESCRIPTION \
CustomDataTypeDescription(nullptr, nullptr)
CustomDataTypeDescription{nullptr, nullptr, nullptr}
/**
* @brief descriptors for data pointed to from CustomDataLayer.data
@@ -164,15 +149,15 @@ namespace Assimp {
return cdtype >= 0 && cdtype < CD_NUMTYPES;
}
bool readCustomData(std::shared_ptr<uint8_t> &out, const int cdtype, const size_t cnt, const FileDatabase &db) {
bool readCustomData(std::shared_ptr<ElemBase> &out, const int cdtype, const size_t cnt, const FileDatabase &db) {
if (!isValidCustomDataType(cdtype)) {
throw Error((Formatter::format(), "CustomData.type ", cdtype, " out of index"));
}
const CustomDataTypeDescription cdtd = customDataTypeDescriptions[cdtype];
if (cdtd.Read && cdtd.Alloc) {
// allocate cnt elements and parse them from file
out.reset(cdtd.Alloc(cnt), free);
if (cdtd.Read && cdtd.Create && cdtd.Destroy) {
// allocate cnt elements and parse them from file
out.reset(cdtd.Create(cnt), cdtd.Destroy);
return cdtd.Read(out.get(), cnt, db);
}
return false;