blob: b1901dc6db1a88af286eaee0ef47af2f71db9649 [file] [log] [blame]
/* libs/graphics/views/SkMetaData.cpp
**
** Copyright 2006, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** 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 "SkMetaData.h"
#include "SkRefCnt.h"
struct PtrPair {
void* fPtr;
SkMetaData::PtrProc fProc;
};
void* SkMetaData::RefCntProc(void* ptr, bool doRef) {
SkASSERT(ptr);
SkRefCnt* refcnt = reinterpret_cast<SkRefCnt*>(ptr);
if (doRef) {
refcnt->ref();
} else {
refcnt->unref();
}
return ptr;
}
SkMetaData::SkMetaData() : fRec(NULL)
{
}
SkMetaData::SkMetaData(const SkMetaData& src) : fRec(NULL)
{
*this = src;
}
SkMetaData::~SkMetaData()
{
this->reset();
}
void SkMetaData::reset()
{
Rec* rec = fRec;
while (rec) {
if (kPtr_Type == rec->fType) {
PtrPair* pair = (PtrPair*)rec->data();
if (pair->fProc && pair->fPtr) {
pair->fPtr = pair->fProc(pair->fPtr, false);
}
}
Rec* next = rec->fNext;
Rec::Free(rec);
rec = next;
}
fRec = NULL;
}
SkMetaData& SkMetaData::operator=(const SkMetaData& src)
{
this->reset();
const Rec* rec = src.fRec;
while (rec)
{
this->set(rec->name(), rec->data(), rec->fDataLen, (Type)rec->fType, rec->fDataCount);
rec = rec->fNext;
}
return *this;
}
void SkMetaData::setS32(const char name[], int32_t value)
{
(void)this->set(name, &value, sizeof(int32_t), kS32_Type, 1);
}
void SkMetaData::setScalar(const char name[], SkScalar value)
{
(void)this->set(name, &value, sizeof(SkScalar), kScalar_Type, 1);
}
SkScalar* SkMetaData::setScalars(const char name[], int count, const SkScalar values[])
{
SkASSERT(count > 0);
if (count > 0)
return (SkScalar*)this->set(name, values, sizeof(SkScalar), kScalar_Type, count);
return NULL;
}
void SkMetaData::setString(const char name[], const char value[])
{
(void)this->set(name, value, sizeof(char), kString_Type, strlen(value) + 1);
}
void SkMetaData::setPtr(const char name[], void* ptr, PtrProc proc) {
PtrPair pair = { ptr, proc };
(void)this->set(name, &pair, sizeof(PtrPair), kPtr_Type, 1);
}
void SkMetaData::setBool(const char name[], bool value)
{
(void)this->set(name, &value, sizeof(bool), kBool_Type, 1);
}
void SkMetaData::setData(const char name[], const void* data, size_t byteCount) {
(void)this->set(name, data, sizeof(char), kData_Type, byteCount);
}
void* SkMetaData::set(const char name[], const void* data, size_t dataSize, Type type, int count)
{
SkASSERT(name);
SkASSERT(dataSize);
SkASSERT(count > 0);
(void)this->remove(name, type);
size_t len = strlen(name);
Rec* rec = Rec::Alloc(sizeof(Rec) + dataSize * count + len + 1);
#ifndef SK_DEBUG
rec->fType = SkToU8(type);
#else
rec->fType = type;
#endif
rec->fDataLen = SkToU8(dataSize);
rec->fDataCount = SkToU16(count);
if (data)
memcpy(rec->data(), data, dataSize * count);
memcpy(rec->name(), name, len + 1);
if (kPtr_Type == type) {
PtrPair* pair = (PtrPair*)rec->data();
if (pair->fProc && pair->fPtr) {
pair->fPtr = pair->fProc(pair->fPtr, true);
}
}
rec->fNext = fRec;
fRec = rec;
return rec->data();
}
bool SkMetaData::findS32(const char name[], int32_t* value) const
{
const Rec* rec = this->find(name, kS32_Type);
if (rec)
{
SkASSERT(rec->fDataCount == 1);
if (value)
*value = *(const int32_t*)rec->data();
return true;
}
return false;
}
bool SkMetaData::findScalar(const char name[], SkScalar* value) const
{
const Rec* rec = this->find(name, kScalar_Type);
if (rec)
{
SkASSERT(rec->fDataCount == 1);
if (value)
*value = *(const SkScalar*)rec->data();
return true;
}
return false;
}
const SkScalar* SkMetaData::findScalars(const char name[], int* count, SkScalar values[]) const
{
const Rec* rec = this->find(name, kScalar_Type);
if (rec)
{
if (count)
*count = rec->fDataCount;
if (values)
memcpy(values, rec->data(), rec->fDataCount * rec->fDataLen);
return (const SkScalar*)rec->data();
}
return NULL;
}
bool SkMetaData::findPtr(const char name[], void** ptr, PtrProc* proc) const {
const Rec* rec = this->find(name, kPtr_Type);
if (rec) {
SkASSERT(rec->fDataCount == 1);
const PtrPair* pair = (const PtrPair*)rec->data();
if (ptr) {
*ptr = pair->fPtr;
}
if (proc) {
*proc = pair->fProc;
}
return true;
}
return false;
}
const char* SkMetaData::findString(const char name[]) const
{
const Rec* rec = this->find(name, kString_Type);
SkASSERT(rec == NULL || rec->fDataLen == sizeof(char));
return rec ? (const char*)rec->data() : NULL;
}
bool SkMetaData::findBool(const char name[], bool* value) const
{
const Rec* rec = this->find(name, kBool_Type);
if (rec)
{
SkASSERT(rec->fDataCount == 1);
if (value)
*value = *(const bool*)rec->data();
return true;
}
return false;
}
const void* SkMetaData::findData(const char name[], size_t* length) const {
const Rec* rec = this->find(name, kData_Type);
if (rec) {
SkASSERT(rec->fDataLen == sizeof(char));
if (length) {
*length = rec->fDataCount;
}
return rec->data();
}
return NULL;
}
const SkMetaData::Rec* SkMetaData::find(const char name[], Type type) const
{
const Rec* rec = fRec;
while (rec)
{
if (rec->fType == type && !strcmp(rec->name(), name))
return rec;
rec = rec->fNext;
}
return NULL;
}
bool SkMetaData::remove(const char name[], Type type) {
Rec* rec = fRec;
Rec* prev = NULL;
while (rec) {
Rec* next = rec->fNext;
if (rec->fType == type && !strcmp(rec->name(), name)) {
if (prev) {
prev->fNext = next;
} else {
fRec = next;
}
if (kPtr_Type == type) {
PtrPair* pair = (PtrPair*)rec->data();
if (pair->fProc && pair->fPtr) {
(void)pair->fProc(pair->fPtr, false);
}
}
Rec::Free(rec);
return true;
}
prev = rec;
rec = next;
}
return false;
}
bool SkMetaData::removeS32(const char name[])
{
return this->remove(name, kS32_Type);
}
bool SkMetaData::removeScalar(const char name[])
{
return this->remove(name, kScalar_Type);
}
bool SkMetaData::removeString(const char name[])
{
return this->remove(name, kString_Type);
}
bool SkMetaData::removePtr(const char name[])
{
return this->remove(name, kPtr_Type);
}
bool SkMetaData::removeBool(const char name[])
{
return this->remove(name, kBool_Type);
}
bool SkMetaData::removeData(const char name[]) {
return this->remove(name, kData_Type);
}
///////////////////////////////////////////////////////////////////////////////
SkMetaData::Iter::Iter(const SkMetaData& metadata) {
fRec = metadata.fRec;
}
void SkMetaData::Iter::reset(const SkMetaData& metadata) {
fRec = metadata.fRec;
}
const char* SkMetaData::Iter::next(SkMetaData::Type* t, int* count) {
const char* name = NULL;
if (fRec) {
if (t) {
*t = (SkMetaData::Type)fRec->fType;
}
if (count) {
*count = fRec->fDataCount;
}
name = fRec->name();
fRec = fRec->fNext;
}
return name;
}
///////////////////////////////////////////////////////////////////////////////
SkMetaData::Rec* SkMetaData::Rec::Alloc(size_t size) {
return (Rec*)sk_malloc_throw(size);
}
void SkMetaData::Rec::Free(Rec* rec) {
sk_free(rec);
}