FreeRDP/include/freerdp/codec/planar.h
2014-09-12 14:57:44 -04:00

115 lines
3.4 KiB
C

/**
* FreeRDP: A Remote Desktop Protocol Implementation
* RDP6 Planar Codec
*
* Copyright 2013 Marc-Andre Moreau <marcandre.moreau@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.
*/
#ifndef FREERDP_CODEC_PLANAR_H
#define FREERDP_CODEC_PLANAR_H
#include <winpr/crt.h>
typedef struct _BITMAP_PLANAR_CONTEXT BITMAP_PLANAR_CONTEXT;
#include <freerdp/codec/color.h>
#include <freerdp/codec/bitmap.h>
#define PLANAR_FORMAT_HEADER_CS (1 << 3)
#define PLANAR_FORMAT_HEADER_RLE (1 << 4)
#define PLANAR_FORMAT_HEADER_NA (1 << 5)
#define PLANAR_FORMAT_HEADER_CLL_MASK 0x07
#define PLANAR_CONTROL_BYTE(_nRunLength, _cRawBytes) \
(_nRunLength & 0x0F) | ((_cRawBytes & 0x0F) << 4)
#define PLANAR_CONTROL_BYTE_RUN_LENGTH(_controlByte) (_controlByte & 0x0F)
#define PLANAR_CONTROL_BYTE_RAW_BYTES(_controlByte) ((_controlByte >> 4) & 0x0F)
struct _RDP6_RLE_SEGMENT
{
/**
* controlByte:
* [0-3]: nRunLength
* [4-7]: cRawBytes
*/
BYTE controlByte;
BYTE* rawValues;
};
typedef struct _RDP6_RLE_SEGMENT RDP6_RLE_SEGMENT;
struct _RDP6_RLE_SEGMENTS
{
UINT32 cSegments;
RDP6_RLE_SEGMENT* segments;
};
typedef struct _RDP6_RLE_SEGMENTS RDP6_RLE_SEGMENTS;
struct _RDP6_BITMAP_STREAM
{
/**
* formatHeader:
* [0-2]: Color Loss Level (CLL)
* [3] : Chroma Subsampling (CS)
* [4] : Run Length Encoding (RLE)
* [5] : No Alpha (NA)
* [6-7]: Reserved
*/
BYTE formatHeader;
};
typedef struct _RDP6_BITMAP_STREAM RDP6_BITMAP_STREAM;
struct _BITMAP_PLANAR_CONTEXT
{
int maxWidth;
int maxHeight;
int maxPlaneSize;
BOOL AllowSkipAlpha;
BOOL AllowRunLengthEncoding;
BOOL AllowColorSubsampling;
BOOL AllowDynamicColorFidelity;
int ColorLossLevel;
BYTE* planes[4];
BYTE* planesBuffer;
BYTE* deltaPlanes[4];
BYTE* deltaPlanesBuffer;
BYTE* rlePlanes[4];
BYTE* rlePlanesBuffer;
};
FREERDP_API int freerdp_split_color_planes(BYTE* data, UINT32 format, int width, int height, int scanline, BYTE* planes[4]);
FREERDP_API BYTE* freerdp_bitmap_planar_compress_plane_rle(BYTE* plane, int width, int height, BYTE* outPlane, int* dstSize);
FREERDP_API BYTE* freerdp_bitmap_planar_delta_encode_plane(BYTE* inPlane, int width, int height, BYTE* outPlane);
FREERDP_API int freerdp_bitmap_planar_delta_encode_planes(BYTE* inPlanes[4], int width, int height, BYTE* outPlanes[4]);
FREERDP_API BYTE* freerdp_bitmap_compress_planar(BITMAP_PLANAR_CONTEXT* context, BYTE* data, UINT32 format,
int width, int height, int scanline, BYTE* dstData, int* dstSize);
FREERDP_API int freerdp_bitmap_planar_context_reset(BITMAP_PLANAR_CONTEXT* context);
FREERDP_API BITMAP_PLANAR_CONTEXT* freerdp_bitmap_planar_context_new(DWORD flags, int maxWidth, int maxHeight);
FREERDP_API void freerdp_bitmap_planar_context_free(BITMAP_PLANAR_CONTEXT* context);
FREERDP_API int planar_decompress(BITMAP_PLANAR_CONTEXT* planar, BYTE* pSrcData, UINT32 SrcSize,
BYTE** ppDstData, DWORD DstFormat, int nDstStep, int nXDst, int nYDst, int nWidth, int nHeight);
#endif /* FREERDP_CODEC_PLANAR_H */