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/**
* FreeRDP: A Remote Desktop Protocol Implementation
* RemoteFX Codec Library - Encode
*
* Copyright 2011 Vic Lee
* Copyright 2011 Norbert Federa <norbert.federa@thincast.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.
*/
#include <freerdp/config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <winpr/crt.h>
#include <winpr/collections.h>
#include <freerdp/primitives.h>
#include "rfx_types.h"
#include "rfx_rlgr.h"
#include "rfx_differential.h"
#include "rfx_quantization.h"
#include "rfx_dwt.h"
#include "rfx_encode.h"
#define MINMAX(_v, _l, _h) ((_v) < (_l) ? (_l) : ((_v) > (_h) ? (_h) : (_v)))
static void rfx_encode_format_rgb(const BYTE* rgb_data, int width, int height, int rowstride,
UINT32 pixel_format, const BYTE* palette, INT16* r_buf,
INT16* g_buf, INT16* b_buf)
{
int x_exceed = 0;
int y_exceed = 0;
const BYTE* src = NULL;
INT16 r = 0;
INT16 g = 0;
INT16 b = 0;
INT16* r_last = NULL;
INT16* g_last = NULL;
INT16* b_last = NULL;
x_exceed = 64 - width;
y_exceed = 64 - height;
for (int y = 0; y < height; y++)
{
src = rgb_data + y * rowstride;
switch (pixel_format)
{
case PIXEL_FORMAT_BGRX32:
case PIXEL_FORMAT_BGRA32:
for (int x = 0; x < width; x++)
{
*b_buf++ = (INT16)(*src++);
*g_buf++ = (INT16)(*src++);
*r_buf++ = (INT16)(*src++);
src++;
}
break;
case PIXEL_FORMAT_XBGR32:
case PIXEL_FORMAT_ABGR32:
for (int x = 0; x < width; x++)
{
src++;
*b_buf++ = (INT16)(*src++);
*g_buf++ = (INT16)(*src++);
*r_buf++ = (INT16)(*src++);
}
break;
case PIXEL_FORMAT_RGBX32:
case PIXEL_FORMAT_RGBA32:
for (int x = 0; x < width; x++)
{
*r_buf++ = (INT16)(*src++);
*g_buf++ = (INT16)(*src++);
*b_buf++ = (INT16)(*src++);
src++;
}
break;
case PIXEL_FORMAT_XRGB32:
case PIXEL_FORMAT_ARGB32:
for (int x = 0; x < width; x++)
{
src++;
*r_buf++ = (INT16)(*src++);
*g_buf++ = (INT16)(*src++);
*b_buf++ = (INT16)(*src++);
}
break;
case PIXEL_FORMAT_BGR24:
for (int x = 0; x < width; x++)
{
*b_buf++ = (INT16)(*src++);
*g_buf++ = (INT16)(*src++);
*r_buf++ = (INT16)(*src++);
}
break;
case PIXEL_FORMAT_RGB24:
for (int x = 0; x < width; x++)
{
*r_buf++ = (INT16)(*src++);
*g_buf++ = (INT16)(*src++);
*b_buf++ = (INT16)(*src++);
}
break;
case PIXEL_FORMAT_BGR16:
for (int x = 0; x < width; x++)
{
*b_buf++ = (INT16)(((*(src + 1)) & 0xF8) | ((*(src + 1)) >> 5));
*g_buf++ = (INT16)((((*(src + 1)) & 0x07) << 5) | (((*src) & 0xE0) >> 3));
*r_buf++ = (INT16)((((*src) & 0x1F) << 3) | (((*src) >> 2) & 0x07));
src += 2;
}
break;
case PIXEL_FORMAT_RGB16:
for (int x = 0; x < width; x++)
{
*r_buf++ = (INT16)(((*(src + 1)) & 0xF8) | ((*(src + 1)) >> 5));
*g_buf++ = (INT16)((((*(src + 1)) & 0x07) << 5) | (((*src) & 0xE0) >> 3));
*b_buf++ = (INT16)((((*src) & 0x1F) << 3) | (((*src) >> 2) & 0x07));
src += 2;
}
break;
case PIXEL_FORMAT_RGB8:
if (!palette)
break;
for (int x = 0; x < width; x++)
{
int shift = 0;
BYTE idx = 0;
shift = (7 - (x % 8));
idx = ((*src) >> shift) & 1;
idx |= (((*(src + 1)) >> shift) & 1) << 1;
idx |= (((*(src + 2)) >> shift) & 1) << 2;
idx |= (((*(src + 3)) >> shift) & 1) << 3;
idx *= 3;
*r_buf++ = (INT16)palette[idx];
*g_buf++ = (INT16)palette[idx + 1];
*b_buf++ = (INT16)palette[idx + 2];
if (shift == 0)
src += 4;
}
break;
case PIXEL_FORMAT_A4:
if (!palette)
break;
for (int x = 0; x < width; x++)
{
int idx = (*src) * 3;
*r_buf++ = (INT16)palette[idx];
*g_buf++ = (INT16)palette[idx + 1];
*b_buf++ = (INT16)palette[idx + 2];
src++;
}
break;
default:
break;
}
/* Fill the horizontal region outside of 64x64 tile size with the right-most pixel for best
* quality */
if (x_exceed > 0)
{
r = *(r_buf - 1);
g = *(g_buf - 1);
b = *(b_buf - 1);
for (int x = 0; x < x_exceed; x++)
{
*r_buf++ = r;
*g_buf++ = g;
*b_buf++ = b;
}
}
}
/* Fill the vertical region outside of 64x64 tile size with the last line. */
if (y_exceed > 0)
{
r_last = r_buf - 64;
g_last = g_buf - 64;
b_last = b_buf - 64;
while (y_exceed > 0)
{
CopyMemory(r_buf, r_last, 64 * sizeof(INT16));
CopyMemory(g_buf, g_last, 64 * sizeof(INT16));
CopyMemory(b_buf, b_last, 64 * sizeof(INT16));
r_buf += 64;
g_buf += 64;
b_buf += 64;
y_exceed--;
}
}
}
/* rfx_encode_rgb_to_ycbcr code now resides in the primitives library. */
static void rfx_encode_component(RFX_CONTEXT* context, const UINT32* quantization_values,
INT16* data, BYTE* buffer, int buffer_size, int* size)
{
INT16* dwt_buffer = NULL;
dwt_buffer = BufferPool_Take(context->priv->BufferPool, -1); /* dwt_buffer */
PROFILER_ENTER(context->priv->prof_rfx_encode_component)
PROFILER_ENTER(context->priv->prof_rfx_dwt_2d_encode)
context->dwt_2d_encode(data, dwt_buffer);
PROFILER_EXIT(context->priv->prof_rfx_dwt_2d_encode)
PROFILER_ENTER(context->priv->prof_rfx_quantization_encode)
context->quantization_encode(data, quantization_values);
PROFILER_EXIT(context->priv->prof_rfx_quantization_encode)
PROFILER_ENTER(context->priv->prof_rfx_differential_encode)
rfx_differential_encode(data + 4032, 64);
PROFILER_EXIT(context->priv->prof_rfx_differential_encode)
PROFILER_ENTER(context->priv->prof_rfx_rlgr_encode)
*size = context->rlgr_encode(context->mode, data, 4096, buffer, buffer_size);
PROFILER_EXIT(context->priv->prof_rfx_rlgr_encode)
PROFILER_EXIT(context->priv->prof_rfx_encode_component)
BufferPool_Return(context->priv->BufferPool, dwt_buffer);
}
void rfx_encode_rgb(RFX_CONTEXT* context, RFX_TILE* tile)
{
union
{
const INT16** cpv;
INT16** pv;
} cnv;
BYTE* pBuffer = NULL;
INT16* pSrcDst[3];
int YLen = 0;
int CbLen = 0;
int CrLen = 0;
UINT32* YQuant = NULL;
UINT32* CbQuant = NULL;
UINT32* CrQuant = NULL;
primitives_t* prims = primitives_get();
static const prim_size_t roi_64x64 = { 64, 64 };
if (!(pBuffer = (BYTE*)BufferPool_Take(context->priv->BufferPool, -1)))
return;
YLen = CbLen = CrLen = 0;
YQuant = context->quants + (tile->quantIdxY * 10);
CbQuant = context->quants + (tile->quantIdxCb * 10);
CrQuant = context->quants + (tile->quantIdxCr * 10);
pSrcDst[0] = (INT16*)((BYTE*)(&pBuffer[((8192 + 32) * 0) + 16])); /* y_r_buffer */
pSrcDst[1] = (INT16*)((BYTE*)(&pBuffer[((8192 + 32) * 1) + 16])); /* cb_g_buffer */
pSrcDst[2] = (INT16*)((BYTE*)(&pBuffer[((8192 + 32) * 2) + 16])); /* cr_b_buffer */
PROFILER_ENTER(context->priv->prof_rfx_encode_rgb)
PROFILER_ENTER(context->priv->prof_rfx_encode_format_rgb)
rfx_encode_format_rgb(tile->data, tile->width, tile->height, tile->scanline,
context->pixel_format, context->palette, pSrcDst[0], pSrcDst[1],
pSrcDst[2]);
PROFILER_EXIT(context->priv->prof_rfx_encode_format_rgb)
PROFILER_ENTER(context->priv->prof_rfx_rgb_to_ycbcr)
cnv.pv = pSrcDst;
prims->RGBToYCbCr_16s16s_P3P3(cnv.cpv, 64 * sizeof(INT16), pSrcDst, 64 * sizeof(INT16),
&roi_64x64);
PROFILER_EXIT(context->priv->prof_rfx_rgb_to_ycbcr)
/**
* We need to clear the buffers as the RLGR encoder expects it to be initialized to zero.
* This allows simplifying and improving the performance of the encoding process.
*/
ZeroMemory(tile->YData, 4096);
ZeroMemory(tile->CbData, 4096);
ZeroMemory(tile->CrData, 4096);
rfx_encode_component(context, YQuant, pSrcDst[0], tile->YData, 4096, &YLen);
rfx_encode_component(context, CbQuant, pSrcDst[1], tile->CbData, 4096, &CbLen);
rfx_encode_component(context, CrQuant, pSrcDst[2], tile->CrData, 4096, &CrLen);
tile->YLen = (UINT16)YLen;
tile->CbLen = (UINT16)CbLen;
tile->CrLen = (UINT16)CrLen;
PROFILER_EXIT(context->priv->prof_rfx_encode_rgb)
BufferPool_Return(context->priv->BufferPool, pBuffer);
}
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