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rfxencode_rgb_to_yuv.c
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rfxencode_rgb_to_yuv.c
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/**
* FreeRDP: A Remote Desktop Protocol client.
* RemoteFX Codec Library - Encode
*
* Copyright 2011 Vic Lee
* Copyright 2014-2017 Jay Sorg <jay.sorg@gmail.com>
*
* 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.
*/
#if defined(HAVE_CONFIG_H)
#include <config_ac.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <rfxcodec_encode.h>
#include "rfxcommon.h"
#include "rfxencode.h"
#include "rfxconstants.h"
#include "rfxencode_tile.h"
#include "rfxencode_dwt.h"
#include "rfxencode_quantization.h"
#include "rfxencode_differential.h"
#include "rfxencode_rlgr1.h"
#include "rfxencode_rlgr3.h"
#include "rfxencode_alpha.h"
#define LLOG_LEVEL 1
#define LLOGLN(_level, _args) \
do { if (_level < LLOG_LEVEL) { printf _args ; printf("\n"); } } while (0)
/******************************************************************************/
static int
rfx_encode_format_rgb(const char *rgb_data, int width, int height,
int stride_bytes, int pixel_format,
uint8 *r_buf, uint8 *g_buf, uint8 *b_buf)
{
int x;
int y;
const uint8 *src;
uint8 r;
uint8 g;
uint8 b;
uint8 *lr_buf;
uint8 *lg_buf;
uint8 *lb_buf;
LLOGLN(10, ("rfx_encode_format_rgb: pixel_format %d", pixel_format));
b = 0;
g = 0;
r = 0;
switch (pixel_format)
{
case RFX_FORMAT_BGRA:
for (y = 0; y < height; y++)
{
src = (uint8 *) (rgb_data + y * stride_bytes);
lr_buf = r_buf + y * 64;
lg_buf = g_buf + y * 64;
lb_buf = b_buf + y * 64;
for (x = 0; x < width; x++)
{
b = *src++;
*lb_buf++ = b;
g = *src++;
*lg_buf++ = g;
r = *src++;
*lr_buf++ = r;
src++;
}
while (x < 64)
{
*lr_buf++ = r;
*lg_buf++ = g;
*lb_buf++ = r;
x++;
}
}
while (y < 64)
{
lr_buf = r_buf + y * 64;
lg_buf = g_buf + y * 64;
lb_buf = b_buf + y * 64;
memcpy(lr_buf, lr_buf - 64, 64);
memcpy(lg_buf, lg_buf - 64, 64);
memcpy(lb_buf, lb_buf - 64, 64);
y++;
}
break;
case RFX_FORMAT_RGBA:
for (y = 0; y < height; y++)
{
src = (uint8 *) (rgb_data + y * stride_bytes);
lr_buf = r_buf + y * 64;
lg_buf = g_buf + y * 64;
lb_buf = b_buf + y * 64;
for (x = 0; x < width; x++)
{
r = *src++;
*lr_buf++ = r;
g = *src++;
*lg_buf++ = g;
b = *src++;
*lb_buf++ = b;
src++;
}
while (x < 64)
{
*lr_buf++ = r;
*lg_buf++ = g;
*lb_buf++ = b;
x++;
}
}
while (y < 64)
{
lr_buf = r_buf + y * 64;
lg_buf = g_buf + y * 64;
lb_buf = b_buf + y * 64;
memcpy(lr_buf, lr_buf - 64, 64);
memcpy(lg_buf, lg_buf - 64, 64);
memcpy(lb_buf, lb_buf - 64, 64);
y++;
}
break;
case RFX_FORMAT_BGR:
for (y = 0; y < height; y++)
{
src = (uint8 *) (rgb_data + y * stride_bytes);
lr_buf = r_buf + y * 64;
lg_buf = g_buf + y * 64;
lb_buf = b_buf + y * 64;
for (x = 0; x < width; x++)
{
b = *src++;
*lb_buf++ = b;
g = *src++;
*lg_buf++ = g;
r = *src++;
*lr_buf++ = r;
}
while (x < 64)
{
*lr_buf++ = r;
*lg_buf++ = g;
*lb_buf++ = b;
x++;
}
}
while (y < 64)
{
lr_buf = r_buf + y * 64;
lg_buf = g_buf + y * 64;
lb_buf = b_buf + y * 64;
memcpy(lr_buf, lr_buf - 64, 64);
memcpy(lg_buf, lg_buf - 64, 64);
memcpy(lb_buf, lb_buf - 64, 64);
y++;
}
break;
case RFX_FORMAT_RGB:
for (y = 0; y < height; y++)
{
src = (uint8 *) (rgb_data + y * stride_bytes);
lr_buf = r_buf + y * 64;
lg_buf = g_buf + y * 64;
lb_buf = b_buf + y * 64;
for (x = 0; x < width; x++)
{
r = *src++;
*lr_buf++ = r;
g = *src++;
*lg_buf++ = g;
b = *src++;
*lb_buf++ = b;
}
while (x < 64)
{
*lr_buf++ = r;
*lg_buf++ = g;
*lb_buf++ = b;
x++;
}
}
while (y < 64)
{
lr_buf = r_buf + y * 64;
lg_buf = g_buf + y * 64;
lb_buf = b_buf + y * 64;
memcpy(lr_buf, lr_buf - 64, 64);
memcpy(lg_buf, lg_buf - 64, 64);
memcpy(lb_buf, lb_buf - 64, 64);
y++;
}
break;
}
return 0;
}
/******************************************************************************/
static int
rfx_encode_format_argb(const char *argb_data, int width, int height,
int stride_bytes, int pixel_format,
uint8 *a_buf, uint8 *r_buf, uint8 *g_buf, uint8 *b_buf)
{
int x;
int y;
const uint8 *src;
uint8 a;
uint8 r;
uint8 g;
uint8 b;
uint8 *la_buf;
uint8 *lr_buf;
uint8 *lg_buf;
uint8 *lb_buf;
LLOGLN(10, ("rfx_encode_format_argb: pixel_format %d", pixel_format));
b = 0;
g = 0;
r = 0;
a = 0;
switch (pixel_format)
{
case RFX_FORMAT_BGRA:
for (y = 0; y < height; y++)
{
src = (uint8 *) (argb_data + y * stride_bytes);
la_buf = a_buf + y * 64;
lr_buf = r_buf + y * 64;
lg_buf = g_buf + y * 64;
lb_buf = b_buf + y * 64;
for (x = 0; x < width; x++)
{
b = *src++;
*lb_buf++ = b;
g = *src++;
*lg_buf++ = g;
r = *src++;
*lr_buf++ = r;
a = *src++;
*la_buf++ = a;
}
while (x < 64)
{
*la_buf++ = a;
*lr_buf++ = r;
*lg_buf++ = g;
*lb_buf++ = r;
x++;
}
}
while (y < 64)
{
la_buf = a_buf + y * 64;
lr_buf = r_buf + y * 64;
lg_buf = g_buf + y * 64;
lb_buf = b_buf + y * 64;
memcpy(la_buf, la_buf - 64, 64);
memcpy(lr_buf, lr_buf - 64, 64);
memcpy(lg_buf, lg_buf - 64, 64);
memcpy(lb_buf, lb_buf - 64, 64);
y++;
}
break;
case RFX_FORMAT_RGBA:
for (y = 0; y < height; y++)
{
src = (uint8 *) (argb_data + y * stride_bytes);
la_buf = a_buf + y * 64;
lr_buf = r_buf + y * 64;
lg_buf = g_buf + y * 64;
lb_buf = b_buf + y * 64;
for (x = 0; x < width; x++)
{
r = *src++;
*lr_buf++ = r;
g = *src++;
*lg_buf++ = g;
b = *src++;
*lb_buf++ = b;
a = *src++;
*la_buf++ = a;
}
while (x < 64)
{
*la_buf++ = a;
*lr_buf++ = r;
*lg_buf++ = g;
*lb_buf++ = b;
x++;
}
}
while (y < 64)
{
la_buf = a_buf + y * 64;
lr_buf = r_buf + y * 64;
lg_buf = g_buf + y * 64;
lb_buf = b_buf + y * 64;
memcpy(la_buf, la_buf - 64, 64);
memcpy(lr_buf, lr_buf - 64, 64);
memcpy(lg_buf, lg_buf - 64, 64);
memcpy(lb_buf, lb_buf - 64, 64);
y++;
}
break;
case RFX_FORMAT_BGR:
for (y = 0; y < height; y++)
{
src = (uint8 *) (argb_data + y * stride_bytes);
lr_buf = r_buf + y * 64;
lg_buf = g_buf + y * 64;
lb_buf = b_buf + y * 64;
for (x = 0; x < width; x++)
{
b = *src++;
*lb_buf++ = b;
g = *src++;
*lg_buf++ = g;
r = *src++;
*lr_buf++ = r;
}
while (x < 64)
{
*lr_buf++ = r;
*lg_buf++ = g;
*lb_buf++ = b;
x++;
}
}
while (y < 64)
{
lr_buf = r_buf + y * 64;
lg_buf = g_buf + y * 64;
lb_buf = b_buf + y * 64;
memcpy(lr_buf, lr_buf - 64, 64);
memcpy(lg_buf, lg_buf - 64, 64);
memcpy(lb_buf, lb_buf - 64, 64);
y++;
}
break;
case RFX_FORMAT_RGB:
for (y = 0; y < height; y++)
{
src = (uint8 *) (argb_data + y * stride_bytes);
lr_buf = r_buf + y * 64;
lg_buf = g_buf + y * 64;
lb_buf = b_buf + y * 64;
for (x = 0; x < width; x++)
{
r = *src++;
*lr_buf++ = r;
g = *src++;
*lg_buf++ = g;
b = *src++;
*lb_buf++ = b;
}
while (x < 64)
{
*lr_buf++ = r;
*lg_buf++ = g;
*lb_buf++ = b;
x++;
}
}
while (y < 64)
{
lr_buf = r_buf + y * 64;
lg_buf = g_buf + y * 64;
lb_buf = b_buf + y * 64;
memcpy(lr_buf, lr_buf - 64, 64);
memcpy(lg_buf, lg_buf - 64, 64);
memcpy(lb_buf, lb_buf - 64, 64);
y++;
}
break;
}
return 0;
}
/******************************************************************************/
/* http://msdn.microsoft.com/en-us/library/ff635643.aspx
* 0.299 -0.168935 0.499813
* 0.587 -0.331665 -0.418531
* 0.114 0.50059 -0.081282
y = r * 0.299000 + g * 0.587000 + b * 0.114000;
u = r * -0.168935 + g * -0.331665 + b * 0.500590;
v = r * 0.499813 + g * -0.418531 + b * -0.081282; */
/* 19595 38470 7471
-11071 -21736 32807
32756 -27429 -5327 */
static int
rfx_encode_rgb_to_yuv_tile(uint8 *y_r_buf, uint8 *u_g_buf, uint8 *v_b_buf)
{
int i;
sint32 r, g, b;
sint32 y, u, v;
for (i = 0; i < 4096; i++)
{
r = y_r_buf[i];
g = u_g_buf[i];
b = v_b_buf[i];
y = (r * 19595 + g * 38470 + b * 7471) >> 16;
u = (r * -11071 + g * -21736 + b * 32807) >> 16;
v = (r * 32756 + g * -27429 + b * -5327) >> 16;
y_r_buf[i] = MINMAX(y, 0, 255);
u_g_buf[i] = MINMAX(u + 128, 0, 255);
v_b_buf[i] = MINMAX(v + 128, 0, 255);
}
return 0;
}
/******************************************************************************/
int
rfx_encode_rgb_to_yuv(struct rfxencode *enc, const char *rgb_data,
int width, int height, int stride_bytes)
{
uint8 *y_r_buffer;
uint8 *u_g_buffer;
uint8 *v_b_buffer;
y_r_buffer = enc->y_r_buffer;
u_g_buffer = enc->u_g_buffer;
v_b_buffer = enc->v_b_buffer;
if (rfx_encode_format_rgb(rgb_data, width, height, stride_bytes,
enc->format,
y_r_buffer, u_g_buffer, v_b_buffer) != 0)
{
return 1;
}
if (rfx_encode_rgb_to_yuv_tile(y_r_buffer, u_g_buffer, v_b_buffer) != 0)
{
return 1;
}
return 0;
}
/******************************************************************************/
int
rfx_encode_argb_to_yuva(struct rfxencode *enc, const char *argb_data,
int width, int height, int stride_bytes)
{
uint8 *a_buffer;
uint8 *y_r_buffer;
uint8 *u_g_buffer;
uint8 *v_b_buffer;
a_buffer = enc->a_buffer;
y_r_buffer = enc->y_r_buffer;
u_g_buffer = enc->u_g_buffer;
v_b_buffer = enc->v_b_buffer;
if (rfx_encode_format_argb(argb_data, width, height, stride_bytes,
enc->format, a_buffer,
y_r_buffer, u_g_buffer, v_b_buffer) != 0)
{
return 1;
}
if (rfx_encode_rgb_to_yuv_tile(y_r_buffer, u_g_buffer, v_b_buffer) != 0)
{
return 1;
}
return 0;
}