153 lines
4.0 KiB
C
153 lines
4.0 KiB
C
/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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* RemoteFX Codec
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*
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* Copyright 2011 Vic Lee
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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_REMOTEFX_H
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#define FREERDP_CODEC_REMOTEFX_H
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#include <freerdp/api.h>
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#include <freerdp/types.h>
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#include <freerdp/freerdp.h>
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#include <freerdp/constants.h>
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#include <winpr/stream.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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enum _RLGR_MODE
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{
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RLGR1,
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RLGR3
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};
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typedef enum _RLGR_MODE RLGR_MODE;
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struct _RFX_RECT
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{
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UINT16 x;
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UINT16 y;
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UINT16 width;
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UINT16 height;
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};
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typedef struct _RFX_RECT RFX_RECT;
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struct _RFX_TILE
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{
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UINT16 x;
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UINT16 y;
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int width;
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int height;
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BYTE* data;
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BYTE quantIdxY;
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BYTE quantIdxCb;
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BYTE quantIdxCr;
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UINT16 xIdx;
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UINT16 yIdx;
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UINT16 YLen;
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UINT16 CbLen;
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UINT16 CrLen;
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BYTE* YData;
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BYTE* CbData;
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BYTE* CrData;
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};
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typedef struct _RFX_TILE RFX_TILE;
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struct _RFX_MESSAGE
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{
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/**
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* The rects array represents the updated region of the frame. The UI
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* requires to clip drawing destination base on the union of the rects.
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*/
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UINT16 num_rects;
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RFX_RECT* rects;
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/**
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* The tiles array represents the actual frame data. Each tile is always
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* 64x64. Note that only pixels inside the updated region (represented as
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* rects described above) are valid. Pixels outside of the region may
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* contain arbitrary data.
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*/
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UINT16 num_tiles;
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RFX_TILE** tiles;
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};
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typedef struct _RFX_MESSAGE RFX_MESSAGE;
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typedef struct _RFX_CONTEXT_PRIV RFX_CONTEXT_PRIV;
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struct _RFX_CONTEXT
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{
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UINT16 flags;
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UINT16 properties;
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UINT16 width;
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UINT16 height;
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RLGR_MODE mode;
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UINT32 version;
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UINT32 codec_id;
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UINT32 codec_version;
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RDP_PIXEL_FORMAT pixel_format;
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BYTE bits_per_pixel;
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/* color palette allocated by the application */
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const BYTE* palette;
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/* temporary data within a frame */
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UINT32 frame_idx;
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BOOL header_processed;
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BYTE num_quants;
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UINT32* quants;
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BYTE quant_idx_y;
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BYTE quant_idx_cb;
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BYTE quant_idx_cr;
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/* routines */
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void (*quantization_decode)(INT16* buffer, const UINT32* quantization_values);
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void (*quantization_encode)(INT16* buffer, const UINT32* quantization_values);
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void (*dwt_2d_decode)(INT16* buffer, INT16* dwt_buffer);
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void (*dwt_2d_encode)(INT16* buffer, INT16* dwt_buffer);
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int (*rlgr_decode)(RLGR_MODE mode, const BYTE* data, int data_size, INT16* buffer, int buffer_size);
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int (*rlgr_encode)(RLGR_MODE mode, const INT16* data, int data_size, BYTE* buffer, int buffer_size);
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/* private definitions */
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RFX_CONTEXT_PRIV* priv;
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};
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typedef struct _RFX_CONTEXT RFX_CONTEXT;
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FREERDP_API RFX_CONTEXT* rfx_context_new(void);
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FREERDP_API void rfx_context_free(RFX_CONTEXT* context);
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FREERDP_API void rfx_context_set_pixel_format(RFX_CONTEXT* context, RDP_PIXEL_FORMAT pixel_format);
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FREERDP_API void rfx_context_reset(RFX_CONTEXT* context);
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FREERDP_API RFX_MESSAGE* rfx_process_message(RFX_CONTEXT* context, BYTE* data, UINT32 length);
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FREERDP_API UINT16 rfx_message_get_tile_count(RFX_MESSAGE* message);
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FREERDP_API RFX_TILE* rfx_message_get_tile(RFX_MESSAGE* message, int index);
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FREERDP_API UINT16 rfx_message_get_rect_count(RFX_MESSAGE* message);
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FREERDP_API RFX_RECT* rfx_message_get_rect(RFX_MESSAGE* message, int index);
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FREERDP_API void rfx_message_free(RFX_CONTEXT* context, RFX_MESSAGE* message);
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FREERDP_API void rfx_compose_message_header(RFX_CONTEXT* context, wStream* s);
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FREERDP_API void rfx_compose_message(RFX_CONTEXT* context, wStream* s,
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const RFX_RECT* rects, int num_rects, BYTE* image_data, int width, int height, int rowstride);
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#ifdef __cplusplus
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}
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#endif
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#endif /* FREERDP_CODEC_REMOTEFX_H */
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