blob: 99ab2ce221170f8627a1b0c46027a1f1708e3fc8 [file] [log] [blame]
/*
* Copyright 2006 The Android Open Source Project
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "tools/SkMetaData.h"
#include "include/private/SkMalloc.h"
#include "include/private/SkTo.h"
void SkMetaData::reset()
{
Rec* rec = fRec;
while (rec) {
Rec* next = rec->fNext;
Rec::Free(rec);
rec = next;
}
fRec = nullptr;
}
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 nullptr;
}
void SkMetaData::setPtr(const char name[], void* ptr) {
(void)this->set(name, &ptr, sizeof(void*), kPtr_Type, 1);
}
void SkMetaData::setBool(const char name[], bool value)
{
(void)this->set(name, &value, sizeof(bool), kBool_Type, 1);
}
void* SkMetaData::set(const char name[], const void* data, size_t dataSize, Type type, int count)
{
SkASSERT(name);
SkASSERT(dataSize);
SkASSERT(count > 0);
FindResult result = this->findWithPrev(name, type);
Rec* rec;
bool reuseRec = result.rec &&
result.rec->fDataLen == dataSize &&
result.rec->fDataCount == count;
if (reuseRec) {
rec = result.rec;
} else {
size_t len = strlen(name);
rec = Rec::Alloc(sizeof(Rec) + dataSize * count + len + 1);
rec->fType = SkToU8(type);
rec->fDataLen = SkToU8(dataSize);
rec->fDataCount = SkToU16(count);
memcpy(rec->name(), name, len + 1);
}
if (data) {
memcpy(rec->data(), data, dataSize * count);
}
if (reuseRec) {
// Do nothing, reused
} else if (result.rec) {
// Had one, but had to create a new one. Invalidates iterators.
// Delayed removal since name or data may have been in the result.rec.
this->remove(result);
if (result.prev) {
rec->fNext = result.prev->fNext;
result.prev->fNext = rec;
}
} else {
// Adding a new one, stick it at head.
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 nullptr;
}
bool SkMetaData::findPtr(const char name[], void** ptr) const {
const Rec* rec = this->find(name, kPtr_Type);
if (rec) {
SkASSERT(rec->fDataCount == 1);
void** found = (void**)rec->data();
if (ptr) {
*ptr = *found;
}
return true;
}
return false;
}
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;
}
SkMetaData::FindResult SkMetaData::findWithPrev(const char name[], Type type) const {
FindResult current { fRec, nullptr };
while (current.rec) {
if (current.rec->fType == type && !strcmp(current.rec->name(), name))
return current;
current.prev = current.rec;
current.rec = current.rec->fNext;
}
return current;
}
const SkMetaData::Rec* SkMetaData::find(const char name[], Type type) const {
return this->findWithPrev(name, type).rec;
}
void SkMetaData::remove(FindResult result) {
SkASSERT(result.rec);
if (result.prev) {
result.prev->fNext = result.rec->fNext;
} else {
fRec = result.rec->fNext;
}
Rec::Free(result.rec);
}
bool SkMetaData::remove(const char name[], Type type) {
FindResult result = this->findWithPrev(name, type);
if (!result.rec) {
return false;
}
this->remove(result);
return true;
}
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::removePtr(const char name[])
{
return this->remove(name, kPtr_Type);
}
bool SkMetaData::removeBool(const char name[])
{
return this->remove(name, kBool_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 = nullptr;
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);
}