FreeRDP/include/freerdp/codec/rfx.h
2012-03-13 19:02:19 +08:00

138 lines
3.8 KiB
C

/**
* FreeRDP: A Remote Desktop Protocol client.
* 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 __RFX_H
#define __RFX_H
#include <freerdp/api.h>
#include <freerdp/types.h>
#include <freerdp/constants.h>
#include <freerdp/utils/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;
uint8* 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;
uint8 bits_per_pixel;
/* color palette allocated by the application */
const uint8* palette;
/* temporary data within a frame */
uint32 frame_idx;
boolean header_processed;
uint8 num_quants;
uint32* quants;
uint8 quant_idx_y;
uint8 quant_idx_cb;
uint8 quant_idx_cr;
/* routines */
void (*decode_ycbcr_to_rgb)(sint16* y_r_buf, sint16* cb_g_buf, sint16* cr_b_buf);
void (*encode_rgb_to_ycbcr)(sint16* y_r_buf, sint16* cb_g_buf, sint16* cr_b_buf);
void (*quantization_decode)(sint16* buffer, const uint32* quantization_values);
void (*quantization_encode)(sint16* buffer, const uint32* quantization_values);
void (*dwt_2d_decode)(sint16* buffer, sint16* dwt_buffer);
void (*dwt_2d_encode)(sint16* buffer, sint16* 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_cpu_opt(RFX_CONTEXT* context, uint32 cpu_opt);
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, uint8* 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, STREAM* s);
FREERDP_API void rfx_compose_message(RFX_CONTEXT* context, STREAM* s,
const RFX_RECT* rects, int num_rects, uint8* image_data, int width, int height, int rowstride);
#ifdef __cplusplus
}
#endif
#endif /* __RFX_H */