141 lines
3.8 KiB
C
141 lines
3.8 KiB
C
/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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* RDP6 Planar Codec
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*
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* Copyright 2013 Marc-Andre Moreau <marcandre.moreau@gmail.com>
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* Copyright 2016 Armin Novak <armin.novak@thincast.com>
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* Copyright 2016 Thincast Technologies GmbH
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef FREERDP_CODEC_PLANAR_H
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#define FREERDP_CODEC_PLANAR_H
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#include <winpr/crt.h>
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typedef struct _BITMAP_PLANAR_CONTEXT BITMAP_PLANAR_CONTEXT;
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#include <freerdp/codec/color.h>
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#include <freerdp/codec/bitmap.h>
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#define PLANAR_FORMAT_HEADER_CS (1 << 3)
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#define PLANAR_FORMAT_HEADER_RLE (1 << 4)
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#define PLANAR_FORMAT_HEADER_NA (1 << 5)
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#define PLANAR_FORMAT_HEADER_CLL_MASK 0x07
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#define PLANAR_CONTROL_BYTE(_nRunLength, _cRawBytes) \
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(_nRunLength & 0x0F) | ((_cRawBytes & 0x0F) << 4)
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#define PLANAR_CONTROL_BYTE_RUN_LENGTH(_controlByte) (_controlByte & 0x0F)
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#define PLANAR_CONTROL_BYTE_RAW_BYTES(_controlByte) ((_controlByte >> 4) & 0x0F)
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struct _RDP6_RLE_SEGMENT
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{
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/**
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* controlByte:
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* [0-3]: nRunLength
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* [4-7]: cRawBytes
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*/
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BYTE controlByte;
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BYTE* rawValues;
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};
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typedef struct _RDP6_RLE_SEGMENT RDP6_RLE_SEGMENT;
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struct _RDP6_RLE_SEGMENTS
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{
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UINT32 cSegments;
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RDP6_RLE_SEGMENT* segments;
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};
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typedef struct _RDP6_RLE_SEGMENTS RDP6_RLE_SEGMENTS;
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struct _RDP6_BITMAP_STREAM
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{
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/**
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* formatHeader:
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* [0-2]: Color Loss Level (CLL)
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* [3] : Chroma Subsampling (CS)
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* [4] : Run Length Encoding (RLE)
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* [5] : No Alpha (NA)
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* [6-7]: Reserved
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*/
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BYTE formatHeader;
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};
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typedef struct _RDP6_BITMAP_STREAM RDP6_BITMAP_STREAM;
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struct _BITMAP_PLANAR_CONTEXT
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{
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UINT32 maxWidth;
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UINT32 maxHeight;
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UINT32 maxPlaneSize;
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BOOL AllowSkipAlpha;
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BOOL AllowRunLengthEncoding;
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BOOL AllowColorSubsampling;
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BOOL AllowDynamicColorFidelity;
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UINT32 ColorLossLevel;
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BYTE* planes[4];
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BYTE* planesBuffer;
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BYTE* deltaPlanes[4];
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BYTE* deltaPlanesBuffer;
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BYTE* rlePlanes[4];
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BYTE* rlePlanesBuffer;
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BYTE* pTempData;
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UINT32 nTempStep;
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};
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#ifdef __cplusplus
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extern "C" {
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#endif
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FREERDP_API BYTE* freerdp_bitmap_planar_compress_plane_rle(
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const BYTE* plane, UINT32 width, UINT32 height,
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BYTE* outPlane, UINT32* dstSize);
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FREERDP_API BYTE* freerdp_bitmap_planar_delta_encode_plane(
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const BYTE* inPlane, UINT32 width, UINT32 height, BYTE* outPlane);
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FREERDP_API BOOL freerdp_bitmap_planar_delta_encode_planes(
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const BYTE* inPlanes[4], UINT32 width, UINT32 height,
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BYTE* outPlanes[4]);
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FREERDP_API BYTE* freerdp_bitmap_compress_planar(
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BITMAP_PLANAR_CONTEXT* context,
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const BYTE* data, UINT32 format,
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UINT32 width, UINT32 height, UINT32 scanline,
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BYTE* dstData, UINT32* pDstSize);
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FREERDP_API BOOL freerdp_bitmap_planar_context_reset(BITMAP_PLANAR_CONTEXT*
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context);
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FREERDP_API BITMAP_PLANAR_CONTEXT* freerdp_bitmap_planar_context_new(
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DWORD flags, UINT32 maxWidth, UINT32 maxHeight);
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FREERDP_API void freerdp_bitmap_planar_context_free(BITMAP_PLANAR_CONTEXT*
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context);
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FREERDP_API INT32 planar_decompress(BITMAP_PLANAR_CONTEXT* planar,
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const BYTE* pSrcData, UINT32 SrcSize,
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BYTE** ppDstData, UINT32 DstFormat,
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INT32 nDstStep, UINT32 nXDst, UINT32 nYDst,
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UINT32 nWidth, UINT32 nHeight, BOOL vFlip);
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#ifdef __cplusplus
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}
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#endif
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#endif /* FREERDP_CODEC_PLANAR_H */
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