mirror of
https://github.com/FreeRDP/FreeRDP.git
synced 2025-06-03 00:00:20 +00:00
356 lines
9.5 KiB
C
356 lines
9.5 KiB
C
/* FreeRDP: A Remote Desktop Protocol Client
|
|
* Color conversion operations.
|
|
* vi:ts=4 sw=4:
|
|
*
|
|
* Copyright 2011 Stephen Erisman
|
|
* Copyright 2011 Norbert Federa <norbert.federa@thincast.com>
|
|
* Copyright 2011 Martin Fleisz <martin.fleisz@thincast.com>
|
|
* (c) Copyright 2012 Hewlett-Packard Development Company, L.P.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <freerdp/types.h>
|
|
#include <freerdp/primitives.h>
|
|
|
|
#include "prim_internal.h"
|
|
#include "prim_colors.h"
|
|
|
|
#ifndef MINMAX
|
|
#define MINMAX(_v_, _l_, _h_) \
|
|
((_v_) < (_l_) ? (_l_) : ((_v_) > (_h_) ? (_h_) : (_v_)))
|
|
#endif /* !MINMAX */
|
|
|
|
/* ------------------------------------------------------------------------- */
|
|
|
|
pstatus_t general_yCbCrToRGB_16s8u_P3AC4R(const INT16* pSrc[3], int srcStep,
|
|
BYTE* pDst, int dstStep, const prim_size_t* roi)
|
|
{
|
|
int x, y;
|
|
INT16 R, G, B;
|
|
float Y, Cb, Cr;
|
|
BYTE* pRGB = pDst;
|
|
const INT16* pY = pSrc[0];
|
|
const INT16* pCb = pSrc[1];
|
|
const INT16* pCr = pSrc[2];
|
|
int srcPad = (srcStep - (roi->width * 2)) / 2;
|
|
int dstPad = (dstStep - (roi->width * 4)) / 4;
|
|
|
|
for (y = 0; y < roi->height; y++)
|
|
{
|
|
for (x = 0; x < roi->width; x++)
|
|
{
|
|
Y = (float) (pY[0] + 4096);
|
|
Cb = (float) (pCb[0]);
|
|
Cr = (float) (pCr[0]);
|
|
|
|
R = ((INT16) (((Cr * 1.402525f) + Y + 16.0f)) >> 5);
|
|
G = ((INT16) ((Y - (Cb * 0.343730f) - (Cr * 0.714401f) + 16.0f)) >> 5);
|
|
B = ((INT16) (((Cb * 1.769905f) + Y + 16.0f)) >> 5);
|
|
|
|
if (R < 0)
|
|
R = 0;
|
|
else if (R > 255)
|
|
R = 255;
|
|
|
|
if (G < 0)
|
|
G = 0;
|
|
else if (G > 255)
|
|
G = 255;
|
|
|
|
if (B < 0)
|
|
B = 0;
|
|
else if (B > 255)
|
|
B = 255;
|
|
|
|
*pRGB++ = (BYTE) B;
|
|
*pRGB++ = (BYTE) G;
|
|
*pRGB++ = (BYTE) R;
|
|
*pRGB++ = 0xFF;
|
|
|
|
pY++;
|
|
pCb++;
|
|
pCr++;
|
|
}
|
|
|
|
pY += srcPad;
|
|
pCb += srcPad;
|
|
pCr += srcPad;
|
|
pRGB += dstPad;
|
|
}
|
|
|
|
return PRIMITIVES_SUCCESS;
|
|
}
|
|
|
|
pstatus_t general_yCbCrToBGR_16s8u_P3AC4R(const INT16* pSrc[3], int srcStep,
|
|
BYTE* pDst, int dstStep, const prim_size_t* roi)
|
|
{
|
|
int x, y;
|
|
INT16 R, G, B;
|
|
float Y, Cb, Cr;
|
|
BYTE* pRGB = pDst;
|
|
const INT16* pY = pSrc[0];
|
|
const INT16* pCb = pSrc[1];
|
|
const INT16* pCr = pSrc[2];
|
|
int srcPad = (srcStep - (roi->width * 2)) / 2;
|
|
int dstPad = (dstStep - (roi->width * 4)) / 4;
|
|
|
|
for (y = 0; y < roi->height; y++)
|
|
{
|
|
for (x = 0; x < roi->width; x++)
|
|
{
|
|
Y = (float) (pY[0] + 4096);
|
|
Cb = (float) (pCb[0]);
|
|
Cr = (float) (pCr[0]);
|
|
|
|
R = ((INT16) (((Cr * 1.402525f) + Y + 16.0f)) >> 5);
|
|
G = ((INT16) ((Y - (Cb * 0.343730f) - (Cr * 0.714401f) + 16.0f)) >> 5);
|
|
B = ((INT16) (((Cb * 1.769905f) + Y + 16.0f)) >> 5);
|
|
|
|
if (R < 0)
|
|
R = 0;
|
|
else if (R > 255)
|
|
R = 255;
|
|
|
|
if (G < 0)
|
|
G = 0;
|
|
else if (G > 255)
|
|
G = 255;
|
|
|
|
if (B < 0)
|
|
B = 0;
|
|
else if (B > 255)
|
|
B = 255;
|
|
|
|
*pRGB++ = (BYTE) R;
|
|
*pRGB++ = (BYTE) G;
|
|
*pRGB++ = (BYTE) B;
|
|
*pRGB++ = 0xFF;
|
|
|
|
pY++;
|
|
pCb++;
|
|
pCr++;
|
|
}
|
|
|
|
pY += srcPad;
|
|
pCb += srcPad;
|
|
pCr += srcPad;
|
|
pRGB += dstPad;
|
|
}
|
|
|
|
return PRIMITIVES_SUCCESS;
|
|
}
|
|
|
|
/* ------------------------------------------------------------------------- */
|
|
|
|
pstatus_t general_yCbCrToRGB_16s16s_P3P3(
|
|
const INT16 *pSrc[3], INT32 srcStep,
|
|
INT16 *pDst[3], INT32 dstStep,
|
|
const prim_size_t *roi) /* region of interest */
|
|
{
|
|
/**
|
|
* The decoded YCbCr coeffectients are represented as 11.5 fixed-point
|
|
* numbers:
|
|
*
|
|
* 1 sign bit + 10 integer bits + 5 fractional bits
|
|
*
|
|
* However only 7 integer bits will be actually used since the value range
|
|
* is [-128.0, 127.0]. In other words, the decoded coefficients are scaled
|
|
* by << 5 when interpreted as INT16.
|
|
* It was scaled in the quantization phase, so we must scale it back here.
|
|
*/
|
|
const INT16 *yptr = pSrc[0];
|
|
const INT16 *cbptr = pSrc[1];
|
|
const INT16 *crptr = pSrc[2];
|
|
INT16 *rptr = pDst[0];
|
|
INT16 *gptr = pDst[1];
|
|
INT16 *bptr = pDst[2];
|
|
int srcbump = (srcStep - (roi->width * sizeof(UINT16))) / sizeof(UINT16);
|
|
int dstbump = (dstStep - (roi->width * sizeof(UINT16))) / sizeof(UINT16);
|
|
int y;
|
|
|
|
for (y=0; y<roi->height; y++)
|
|
{
|
|
int x;
|
|
for (x=0; x<roi->width; ++x)
|
|
{
|
|
/* INT32 is used intentionally because we calculate
|
|
* with shifted factors!
|
|
*/
|
|
INT32 y = (INT32) (*yptr++);
|
|
INT32 cb = (INT32) (*cbptr++);
|
|
INT32 cr = (INT32) (*crptr++);
|
|
INT32 r,g,b;
|
|
|
|
/*
|
|
* This is the slow floating point version kept here for reference.
|
|
* y = y + 4096; // 128<<5=4096 so that we can scale the sum by>>5
|
|
* r = y + cr*1.403f;
|
|
* g = y - cb*0.344f - cr*0.714f;
|
|
* b = y + cb*1.770f;
|
|
* y_r_buf[i] = MINMAX(r>>5, 0, 255);
|
|
* cb_g_buf[i] = MINMAX(g>>5, 0, 255);
|
|
* cr_b_buf[i] = MINMAX(b>>5, 0, 255);
|
|
*/
|
|
|
|
/*
|
|
* We scale the factors by << 16 into 32-bit integers in order to
|
|
* avoid slower floating point multiplications. Since the final
|
|
* result needs to be scaled by >> 5 we will extract only the
|
|
* upper 11 bits (>> 21) from the final sum.
|
|
* Hence we also have to scale the other terms of the sum by << 16.
|
|
* R: 1.403 << 16 = 91947
|
|
* G: 0.344 << 16 = 22544, 0.714 << 16 = 46792
|
|
* B: 1.770 << 16 = 115998
|
|
*/
|
|
y = (y+4096)<<16;
|
|
|
|
r = y + cr*91947;
|
|
g = y - cb*22544 - cr*46792;
|
|
b = y + cb*115998;
|
|
|
|
*rptr++ = MINMAX(r>>21, 0, 255);
|
|
*gptr++ = MINMAX(g>>21, 0, 255);
|
|
*bptr++ = MINMAX(b>>21, 0, 255);
|
|
}
|
|
yptr += srcbump;
|
|
cbptr += srcbump;
|
|
crptr += srcbump;
|
|
rptr += dstbump;
|
|
gptr += dstbump;
|
|
bptr += dstbump;
|
|
}
|
|
return PRIMITIVES_SUCCESS;
|
|
}
|
|
|
|
/* ------------------------------------------------------------------------- */
|
|
pstatus_t general_RGBToYCbCr_16s16s_P3P3(
|
|
const INT16 *pSrc[3], INT32 srcStep,
|
|
INT16 *pDst[3], INT32 dstStep,
|
|
const prim_size_t *roi) /* region of interest */
|
|
{
|
|
/* The encoded YCbCr coefficients are represented as 11.5 fixed-point
|
|
* numbers:
|
|
*
|
|
* 1 sign bit + 10 integer bits + 5 fractional bits
|
|
*
|
|
* However only 7 integer bits will be actually used since the value
|
|
* range is [-128.0, 127.0]. In other words, the encoded coefficients
|
|
* is scaled by << 5 when interpreted as INT16.
|
|
* It will be scaled down to original during the quantization phase.
|
|
*/
|
|
const INT16 *rptr = pSrc[0];
|
|
const INT16 *gptr = pSrc[1];
|
|
const INT16 *bptr = pSrc[2];
|
|
INT16 *yptr = pDst[0];
|
|
INT16 *cbptr = pDst[1];
|
|
INT16 *crptr = pDst[2];
|
|
int srcbump = (srcStep - (roi->width * sizeof(UINT16))) / sizeof(UINT16);
|
|
int dstbump = (dstStep - (roi->width * sizeof(UINT16))) / sizeof(UINT16);
|
|
int y;
|
|
|
|
for (y=0; y<roi->height; y++)
|
|
{
|
|
int x;
|
|
for (x=0; x<roi->width; ++x)
|
|
{
|
|
/* INT32 is used intentionally because we calculate with
|
|
* shifted factors!
|
|
*/
|
|
INT32 r = (INT32) (*rptr++);
|
|
INT32 g = (INT32) (*gptr++);
|
|
INT32 b = (INT32) (*bptr++);
|
|
|
|
/* We scale the factors by << 15 into 32-bit integers in order
|
|
* to avoid slower floating point multiplications. Since the
|
|
* terms need to be scaled by << 5 we simply scale the final
|
|
* sum by >> 10
|
|
*
|
|
* Y: 0.299000 << 15 = 9798, 0.587000 << 15 = 19235,
|
|
* 0.114000 << 15 = 3735
|
|
* Cb: 0.168935 << 15 = 5535, 0.331665 << 15 = 10868,
|
|
* 0.500590 << 15 = 16403
|
|
* Cr: 0.499813 << 15 = 16377, 0.418531 << 15 = 13714,
|
|
* 0.081282 << 15 = 2663
|
|
*/
|
|
INT32 y = (r * 9798 + g * 19235 + b * 3735) >> 10;
|
|
INT32 cb = (r * -5535 + g * -10868 + b * 16403) >> 10;
|
|
INT32 cr = (r * 16377 + g * -13714 + b * -2663) >> 10;
|
|
|
|
*yptr++ = (INT16) MINMAX(y - 4096, -4096, 4095);
|
|
*cbptr++ = (INT16) MINMAX(cb, -4096, 4095);
|
|
*crptr++ = (INT16) MINMAX(cr, -4096, 4095);
|
|
}
|
|
yptr += srcbump;
|
|
cbptr += srcbump;
|
|
crptr += srcbump;
|
|
rptr += dstbump;
|
|
gptr += dstbump;
|
|
bptr += dstbump;
|
|
}
|
|
return PRIMITIVES_SUCCESS;
|
|
}
|
|
|
|
/* ------------------------------------------------------------------------- */
|
|
pstatus_t general_RGBToRGB_16s8u_P3AC4R(
|
|
const INT16 *pSrc[3], /* 16-bit R,G, and B arrays */
|
|
int srcStep, /* bytes between rows in source data */
|
|
BYTE *pDst, /* 32-bit interleaved ARGB (ABGR?) data */
|
|
int dstStep, /* bytes between rows in dest data */
|
|
const prim_size_t *roi) /* region of interest */
|
|
{
|
|
const INT16 *r = pSrc[0];
|
|
const INT16 *g = pSrc[1];
|
|
const INT16 *b = pSrc[2];
|
|
BYTE *dst = pDst;
|
|
int x,y;
|
|
int srcbump = (srcStep - (roi->width * sizeof(UINT16))) / sizeof(UINT16);
|
|
int dstbump = (dstStep - (roi->width * sizeof(UINT32)));
|
|
|
|
for (y=0; y<roi->height; ++y)
|
|
{
|
|
for (x=0; x<roi->width; ++x)
|
|
{
|
|
*dst++ = (BYTE) (*b++);
|
|
*dst++ = (BYTE) (*g++);
|
|
*dst++ = (BYTE) (*r++);
|
|
*dst++ = ((BYTE) (0xFFU));
|
|
}
|
|
dst += dstbump;
|
|
r += srcbump;
|
|
g += srcbump;
|
|
b += srcbump;
|
|
}
|
|
return PRIMITIVES_SUCCESS;
|
|
}
|
|
|
|
/* ------------------------------------------------------------------------- */
|
|
void primitives_init_colors(primitives_t* prims)
|
|
{
|
|
prims->yCbCrToRGB_16s8u_P3AC4R = general_yCbCrToRGB_16s8u_P3AC4R;
|
|
prims->yCbCrToBGR_16s8u_P3AC4R = general_yCbCrToBGR_16s8u_P3AC4R;
|
|
prims->yCbCrToRGB_16s16s_P3P3 = general_yCbCrToRGB_16s16s_P3P3;
|
|
prims->RGBToYCbCr_16s16s_P3P3 = general_RGBToYCbCr_16s16s_P3P3;
|
|
prims->RGBToRGB_16s8u_P3AC4R = general_RGBToRGB_16s8u_P3AC4R;
|
|
|
|
primitives_init_colors_opt(prims);
|
|
}
|
|
|
|
/* ------------------------------------------------------------------------- */
|
|
void primitives_deinit_colors(primitives_t* prims)
|
|
{
|
|
/* Nothing to do. */
|
|
}
|
|
|