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/*
* Copyright (c) 2020-2021 Samsung Electronics Co., Ltd. All rights reserved.
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "tvgMath.h"
#include "tvgSwCommon.h"
/************************************************************************/
/* Internal Class Implementation */
/************************************************************************/
static inline bool _onlyShifted(const Matrix* m)
{
if (mathEqual(m->e11, 1.0f) && mathEqual(m->e22, 1.0f) && mathZero(m->e12) && mathZero(m->e21)) return true;
return false;
}
static bool _genOutline(SwImage* image, const Matrix* transform, SwMpool* mpool, unsigned tid)
{
image->outline = mpoolReqOutline(mpool, tid);
auto outline = image->outline;
if (outline->reservedPtsCnt < 5) {
outline->reservedPtsCnt = 5;
outline->pts = static_cast<SwPoint*>(realloc(outline->pts, outline->reservedPtsCnt * sizeof(SwPoint)));
outline->types = static_cast<uint8_t*>(realloc(outline->types, outline->reservedPtsCnt * sizeof(uint8_t)));
}
if (outline->reservedCntrsCnt < 1) {
outline->reservedCntrsCnt = 1;
outline->cntrs = static_cast<uint16_t*>(realloc(outline->cntrs, outline->reservedCntrsCnt * sizeof(uint16_t)));
outline->closed = static_cast<bool*>(realloc(outline->closed, outline->reservedCntrsCnt * sizeof(bool)));
outline->closed[0] = true;
}
auto w = static_cast<float>(image->w);
auto h = static_cast<float>(image->h);
Point to[4] = {{0 ,0}, {w, 0}, {w, h}, {0, h}};
for (int i = 0; i < 4; i++) {
outline->pts[outline->ptsCnt] = mathTransform(&to[i], transform);
outline->types[outline->ptsCnt] = SW_CURVE_TYPE_POINT;
++outline->ptsCnt;
}
outline->pts[outline->ptsCnt] = outline->pts[0];
outline->types[outline->ptsCnt] = SW_CURVE_TYPE_POINT;
++outline->ptsCnt;
outline->cntrs[outline->cntrsCnt] = outline->ptsCnt - 1;
++outline->cntrsCnt;
image->outline = outline;
return true;
}
/************************************************************************/
/* External Class Implementation */
/************************************************************************/
bool imagePrepare(SwImage* image, const Matrix* transform, const SwBBox& clipRegion, SwBBox& renderRegion, SwMpool* mpool, unsigned tid)
{
image->direct = _onlyShifted(transform);
//Fast track: Non-transformed image but just shifted.
if (image->direct) {
image->ox = -static_cast<int32_t>(round(transform->e13));
image->oy = -static_cast<int32_t>(round(transform->e23));
//Figure out the scale factor by transform matrix
} else {
auto scaleX = sqrtf((transform->e11 * transform->e11) + (transform->e21 * transform->e21));
auto scaleY = sqrtf((transform->e22 * transform->e22) + (transform->e12 * transform->e12));
image->scale = (fabsf(scaleX - scaleY) > 0.01f) ? 1.0f : scaleX;
if (mathZero(transform->e12) && mathZero(transform->e21)) image->scaled = true;
else image->scaled = false;
}
if (!_genOutline(image, transform, mpool, tid)) return false;
return mathUpdateOutlineBBox(image->outline, clipRegion, renderRegion, image->direct);
}
bool imageGenRle(SwImage* image, const SwBBox& renderRegion, bool antiAlias)
{
if ((image->rle = rleRender(image->rle, image->outline, renderRegion, antiAlias))) return true;
return false;
}
void imageDelOutline(SwImage* image, SwMpool* mpool, uint32_t tid)
{
mpoolRetOutline(mpool, tid);
image->outline = nullptr;
}
void imageReset(SwImage* image)
{
rleReset(image->rle);
}
void imageFree(SwImage* image)
{
rleFree(image->rle);
}
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