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/*
* Copyright (C) 2010 - 2011 Samsung Electronics Co., Ltd. All rights reserved.
*
* Contact:
* DongKyun Yun <dk77.yun@samsung.com>
* SangJin Kim <sangjin3.kim@samsung.com>
* HyunGoo Kang <hyungoo1.kang@samsung.com>
*
* 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.
*
* Contributors:
* - S-Core Co., Ltd
*
*/
#include "gl_imp.h"
#include <malloc.h>
#include <GLES/glext.h>
GL_API void GL_APIENTRY INTFN(FetchRGBAtoRGBA)(const GLvoid* src, GLubyte* dst, GLint width) {
GLubyte* ptr = (GLubyte*)src;
while (width--) {
*dst++ = *ptr++;
*dst++ = *ptr++;
*dst++ = *ptr++;
*dst++ = *ptr++;
}
}
GL_API void GL_APIENTRY INTFN(FetchRGBtoRGB)(const GLvoid* src, GLubyte* dst, GLint width) {
GLubyte* ptr = (GLubyte*)src;
while (width--) {
*dst++ = *ptr++;
*dst++ = *ptr++;
*dst++ = *ptr++;
}
}
GL_API void GL_APIENTRY INTFN(Fetch4444toRGBA)(const GLvoid* src, GLubyte* dst, GLint width) {
const GLushort* ptr = (const GLushort*)src;
int i;
for (i = 0; i < width; i++) {
register GLushort value = *ptr++;
register GLubyte val;
val = (value >> 12);
*dst++ = ((val << 4) + val);
val = ((value >> 8) & 0x0F);
*dst++ = ((val << 4) + val);
val = ((value >> 4) & 0x0F);
*dst++ = ((val << 4) + val);
val = (value & 0x0F);
*dst++ = ((val << 4) + val);
}
}
GL_API void GL_APIENTRY INTFN(Fetch5551toRGBA)(const GLvoid* src, GLubyte* dst, GLint width) {
const GLushort* ptr = (const GLushort*)src;
int i;
for (i = 0; i < width; i++) {
register GLushort value = *ptr++;
register GLubyte val;
val = (value >> 11);
*dst++ = (val << 3) + (val >> 2);
val = ((value >> 6) & 0x1F);
*dst++ = (val << 3) + (val >> 2);
val = ((value >> 1) & 0x1F);
*dst++ = (val << 3) + (val >> 2);
val = (value & 0x01);
*dst++ = 255 * val;
}
}
GL_API void GL_APIENTRY INTFN(Fetch565toRGB)(const GLvoid* src, GLubyte* dst, GLint width) {
const GLushort* ptr = (const GLushort*)src;
int i;
for (i = 0; i < width; i++) {
register GLushort value = *ptr++;
register GLubyte val;
val = (value >> 11);
*dst++ = (val << 3) + (val >> 2);
val = ((value >> 5) & 0x3F);
*dst++ = (val << 2) + (val >> 4);
val = (value & 0x1F);
*dst++ = (val << 3) + (val >> 2);
}
}
GL_API void GL_APIENTRY EXTFN(CompressedTexImage2D)(GLenum target,
GLint level, GLenum internalformat, GLsizei width, GLsizei height,
GLint border, GLsizei imageSize, const GLvoid* data) {
int iMaxSize;
static GLubyte* pTexArea = NULL;
GLubyte palette[4*256];
GLubyte* src;
GLubyte* dst;
GLubyte* pal;
GLenum baseformat;
int palCount, expectedSize;
int i, j, k;
switch (target) {
default:
INTFN(SetError)(GL_INVALID_ENUM);
return;
case GL_TEXTURE_2D:
FNPTR(GetIntegerv)(GL_MAX_TEXTURE_SIZE, &iMaxSize);
break;
#if defined(PROVIDING_OES_texture_cube_map)
case GL_TEXTURE_CUBE_MAP_POSITIVE_X_OES:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_OES:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_OES:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_OES:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_OES:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_OES:
if (width != height) {
INTFN(SetError)(GL_INVALID_VALUE);
return;
}
FNPTR(GetIntegerv)(GL_MAX_CUBE_MAP_TEXTURE_SIZE_OES, &iMaxSize);
break;
#endif
}
if (level > 0 || width < 0 || height < 0 || border != 0) {
INTFN(SetError)(GL_INVALID_VALUE);
return;
}
switch (internalformat) {
case GL_PALETTE4_RGB8_OES:
baseformat = GL_RGB;
expectedSize = (palCount = 16) * 3;
if (data != NULL) INTFN(FetchRGBtoRGB)(data, palette, 16);
break;
case GL_PALETTE4_RGBA8_OES:
baseformat = GL_RGBA;
expectedSize = (palCount = 16) * 4;
if (data != NULL) INTFN(FetchRGBAtoRGBA)(data, palette, 16);
break;
case GL_PALETTE4_R5_G6_B5_OES:
baseformat = GL_RGB;
expectedSize = (palCount = 16) * 2;
if (data != NULL) INTFN(Fetch565toRGB)(data, palette, 16);
break;
case GL_PALETTE4_RGBA4_OES:
baseformat = GL_RGBA;
expectedSize = (palCount = 16) * 2;
if (data != NULL) INTFN(Fetch4444toRGBA)(data, palette, 16);
break;
case GL_PALETTE4_RGB5_A1_OES:
baseformat = GL_RGBA;
expectedSize = (palCount = 16) * 2;
if (data != NULL) INTFN(Fetch5551toRGBA)(data, palette, 16);
break;
case GL_PALETTE8_RGB8_OES:
baseformat = GL_RGB;
expectedSize = (palCount = 256) * 3;
if (data != NULL) INTFN(FetchRGBtoRGB)(data, palette, 256);
break;
case GL_PALETTE8_RGBA8_OES:
baseformat = GL_RGBA;
expectedSize = (palCount = 256) * 4;
if (data != NULL) INTFN(FetchRGBAtoRGBA)(data, palette, 256);
break;
case GL_PALETTE8_R5_G6_B5_OES:
baseformat = GL_RGB;
expectedSize = (palCount = 256) * 2;
if (data != NULL) INTFN(Fetch565toRGB)(data, palette, 256);
break;
case GL_PALETTE8_RGBA4_OES:
baseformat = GL_RGBA;
expectedSize = (palCount = 256) * 2;
if (data != NULL) INTFN(Fetch4444toRGBA)(data, palette, 256);
break;
case GL_PALETTE8_RGB5_A1_OES:
baseformat = GL_RGBA;
expectedSize = (palCount = 256) * 2;
if (data != NULL) INTFN(Fetch5551toRGBA)(data, palette, 256);
break;
default:
INTFN(SetError)(GL_INVALID_ENUM);
return;
}
src = (GLubyte*)data + expectedSize;
expectedSize += (palCount == 16) ? ((width * height + 1) / 2) : (width * height);
if (imageSize != expectedSize) {
INTFN(SetError)(GL_INVALID_VALUE);
return;
}
if ((pTexArea = realloc(pTexArea, 4 * width * height)) == NULL) {
INTFN(SetError)(GL_OUT_OF_MEMORY);
return;
}
if (data == NULL) {
FNPTR(TexImage2D)(target, i, baseformat, width, height, 0, baseformat,
GL_UNSIGNED_BYTE, NULL);
return;
}
if (palCount == 256) {
k = width * height;
if (baseformat == GL_RGBA) {
for (i = 0; i <= -level; i++) {
dst = pTexArea;
for (j = 0; j < k; j++) {
pal = palette + (*src++) * 4;
*dst++ = *pal++;
*dst++ = *pal++;
*dst++ = *pal++;
*dst++ = *pal;
}
FNPTR(TexImage2D)(target, i, baseformat, width, height, 0, baseformat,
GL_UNSIGNED_BYTE, pTexArea);
k /= 4;
width /= 2;
height /= 2;
}
} else {
for (i = 0; i <= -level; i++) {
dst = pTexArea;
for (j = 0; j < k; j++) {
pal = palette + (*src++) * 3;
*dst++ = *pal++;
*dst++ = *pal++;
*dst++ = *pal;
}
FNPTR(TexImage2D)(target, i, baseformat, width, height, 0, baseformat,
GL_UNSIGNED_BYTE, pTexArea);
k /= 4;
width /= 2;
height /= 2;
}
}
} else {
k = width * height / 2;
if (baseformat == GL_RGBA) {
for (i = 0; i <= -level; i++) {
dst = pTexArea;
for (j = 0; j < k; j++) {
pal = palette + (*src >> 4) * 4;
*dst++ = *pal++;
*dst++ = *pal++;
*dst++ = *pal++;
*dst++ = *pal;
pal = palette + (*src++ & 0x0F) * 4;
*dst++ = *pal++;
*dst++ = *pal++;
*dst++ = *pal++;
*dst++ = *pal;
}
FNPTR(TexImage2D)(target, i, baseformat, width, height, 0, baseformat,
GL_UNSIGNED_BYTE, pTexArea);
k /= 4;
width /= 2;
height /= 2;
}
} else {
for (i = 0; i <= -level; i++) {
dst = pTexArea;
for (j = 0; j < k; j++) {
pal = palette + (*src >> 4) * 3;
*dst++ = *pal++;
*dst++ = *pal++;
*dst++ = *pal;
pal = palette + (*src++ & 0x0F) * 3;
*dst++ = *pal++;
*dst++ = *pal++;
*dst++ = *pal;
}
FNPTR(TexImage2D)(target, i, baseformat, width, height, 0, baseformat,
GL_UNSIGNED_BYTE, pTexArea);
k /= 4;
width /= 2;
height /= 2;
}
}
}
}
GL_API void GL_APIENTRY EXTFN(CompressedTexSubImage2D)(GLenum target,
GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height,
GLenum format, GLsizei imageSize, const GLvoid* data) {
int iMaxSize;
switch (target) {
default:
INTFN(SetError)(GL_INVALID_ENUM);
return;
case GL_TEXTURE_2D:
FNPTR(GetIntegerv)(GL_MAX_TEXTURE_SIZE, &iMaxSize);
break;
#if defined(PROVIDING_OES_texture_cube_map)
case GL_TEXTURE_CUBE_MAP_POSITIVE_X_OES:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_OES:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_OES:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_OES:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_OES:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_OES:
if (width != height) {
INTFN(SetError)(GL_INVALID_VALUE);
return;
}
FNPTR(GetIntegerv)(GL_MAX_CUBE_MAP_TEXTURE_SIZE_OES, &iMaxSize);
break;
#endif
}
if (level < 0 || width < 0 || height < 0 || xoffset < 0 || yoffset < 0) {
INTFN(SetError)(GL_INVALID_VALUE);
return;
}
INTFN(SetError)(GL_INVALID_OPERATION);
}
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