FreeRDP/include/freerdp/codec/rfx.h
2013-03-21 16:45:25 -04:00

136 lines
3.6 KiB
C

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