mpeg4.h

DM642的mpeg4编码

/*       
 *
 *
 *
 *
 *
 */
#ifndef _MPEG4_H_
#define _MPEG4_H_

#    include <stdio.h>

#define   MB_PREDICT  15

/*   frame type   */
#define		I_VOP		0
#define		P_VOP		1
#define		B_VOP		2
#define		S_VOP		3
#define		N_VOP		4


/*  macroblock type(not b frame)  */
#define		MB_INTER			0
#define		MB_INTER_Q        1
#define		MB_INTER_4V        2
#define		MB_INTER_4V_Q		5
#define		MB_INTRA          3
#define		MB_INTRA_Q        4

#define		MB_SKIP				16

/* vos */
#define visual_object_sequence_start_code    0x000001B0
#define visual_object_sequence_end_code      0x000001B1
/* vo */
#define visual_object_start_code             0x000001B5
#define video_object_start_code              0x00000100
#define video_object_start_code_mask         0x0000001f     //该标志用来和video_object_start_code 一起进行判断
/* user data */
#define user_data_start_code                 0x000001B2
/* vol */
#define video_object_layer_start_code        0x00000120
#define video_object_layer_start_code_mask   0x0000000f      //该标志用来和video_object_layer_start_code 一起进行判断
/* gov */
#define group_of_vop_start_code              0x000001B3
/* vop */
#define vop_start_code                       0x000001b6



/*  visual object type  */
#define Visual_Object_Type_Video           1
#define Visual_Object_Type_StillTexture    2
#define Visual_Object_Type_Mesh            3
#define Visual_Object_Type_FBA             4
#define Visual_Object_Type_3Dmesh          5

#define Video_Object_Type_Simple                      1
#define Video_Object_Type_Simple_Scalable             2
#define Video_Object_Type_Core_Object                 3
#define Video_Object_Type_Main_Object                 4
#define Video_Object_Type_Nbit_Object                 5
#define Video_Object_Type_Basic_Anim2D_Texture        6
#define Video_Object_Type_Anim2D_Mesh                 7
#define Video_Object_Type_Simple_Face                 8
#define Video_Object_Type_Still_Scalable_Texture      9
#define Video_Object_Type_Advance_Real_Time_Simple    10
#define Video_Object_Type_Core_Scalable               11
#define Video_Object_Type_Advanced_Coding_Efficiency  12
#define Video_Object_Type_Advanced_Scalable_Texture   13
#define Video_Object_Type_Simple_FBA                  14


/*  visual object layer type  */
#define Video_Object_Layer_Sharp_Rectangular  0
#define Video_Object_Layer_Sharp_Binary       1
#define Video_Object_Layer_Sharp_Binary_Only  2
#define Video_Object_Layer_Sharp_Grayscale    3

#define Pixel_Aspect_Ratio_Extended_PAR     15


/*  sprite coding  */
#define Sprite_Coding_Mode_Forbidden  0       
#define Sprite_Coding_Mode_Static     1
#define Sprite_Coding_Mode_GMC        2   

typedef struct{
    short x;
	short y;
}VECTOR;

typedef struct{
   
	short not_code;

	short mcbpc;

	short not_coded;

	short mcsel;

	short ac_pred_flag;                       /*  flag for ac predict  */

	short pred_mode;                          /*  macroblock predict mode  */

	short cbpy;

	short cbp;

	short dquant;

	short quant;

	short modb;

	short mb_type;

	short cbpb;

	short dbquant;

	short coda_i;

	short ac_pred_flag_alpha;

	short cbpa;

	short coda_pb;

	VECTOR PredMv[4];

	VECTOR Mv[4];                                  /* inter macroblock MV or forward macroblock MV  */

	VECTOR DMV[4];

    short PredictDirection[6];                     
	short PredictValue[6][MB_PREDICT];             

	/*  used in ME  */
	int LumBlockSad[4];

	int LumMBlockSad;
}MacroBlock;


typedef struct{
	MacroBlock *pMB;

	long length;

	long iTextBits;

	int IntraMbNum, InterMbNum, SkipMbNum;

	short vop_coding_type;

	short modulo_time_base;

	short vop_time_increment;

	short vop_coded;

	short vop_id;
	short vop_id_for_prediction_indication;
	short vop_id_for_prediction;

    short vop_rounding_type;

	short vop_reduced_resolution;

	short vop_width;                          /* picture width and height */
	short vop_height;

	short vop_extwidth;                       /* picture extwidth and extheight */
	short vop_extheight;          

	short vop_horizontal_mc_spatial_ref;
	short vop_vertical_mc_spatial_ref;

	short background_compostion;
	
	short change_conv_ratio_disable;

	short vop_constant_alpha;
	short vop_constant_alpha_value;

	short intra_dc_vlc_thr;

	short top_field_first;
	short alternate_vertical_scan_flag;

	short sprite_transmit_mode;

	short vop_quant;

	short vop_alpha_quant[6];

	short vop_fcode_forward;

	short vop_fcode_backward;

	short vop_shape_coding_type;

	short load_backward_shape;

	short backward_shape_width;
	short backward_shape_height;
	short backward_shape_horizontial_mc_spatial_ref;
	short backward_shape_vertical_mc_spatial_ref;
	short load_forward_shape;
	short forward_shape_width;
	short forward_shape_height;
	short forward_shape_horizontial_mc_spatial_ref;
	short forward_shapr_vertical_mc_spatial_ref;

	short ref_select_code;

	long iCurDisplayTime;
	long iCurEncodeTime;
    double  dCurEncodeTime;
}FrameInfo;

typedef struct{

	short profile_and_level_indication;

	short is_visual_object_identifier;

    short visual_object_verid;

	short visual_object_priority;

	short visual_object_type;

   
	short random_accessible_vol;

    short video_object_type_indication;
    
    short is_object_layer_identifier;

	short video_object_layer_verid;
	short video_object_layer_priority;

    short aspect_ratio_info;
   
    short par_width;
    short par_height;
  
	short vol_control_parameters;

	short chroma_format;
	short low_delay;
	short vbv_parameters;

	short first_half_bit_rate;
    short latter_half_bit_rate;
	short first_half_vbv_buffer_size;
	short latter_half_vbv_buffer_size;
	short first_half_vbv_occupancy;
	short latter_half_vbv_occupancy;

	short video_object_layer_shape_extension;

	short vop_time_increment_resolution;

	short fixed_vop_rate;
    short fixed_vop_time_increment;

	/*  picture width and height  */
	short video_object_layer_width;
	short video_object_layer_height;

	/*  picture extwidth and extheight  */
	short iExtWidth;
	short iExtHeight;

    short interlaced;

	short obmc_disable;

	short sprite_enable;

	short sprite_width;
	short sprite_height;
	short sprite_left_coordinate;
	short sprite_top_coordinate;

	short no_of_sprite_warping_points;
	short sprite_warping_accuracy;
	short sprite_brightness_change;

	short sadct_disable;

	short not_8_bit;

	short quant_precion;
	short bits_per_pixel;

	short no_gray_quant_update;
	short compositon_method;
	short linear_composition;

	short quant_type;

	short load_intra_quant_mat;
	short load_inter_quant_mat;

	unsigned char intra_quant_mate[64];
	unsigned char inter_quant_mate[64];

    short load_intra_quant_mat_grayscale;
	short load_inter_quant_mat_grayscale;

	unsigned char intra_quant_mat_grayscale[64];
	unsigned char inter_quant_mat_grayscale[64];

	short quarter_sample;

	short complexity_estimation_disable;

	short resync_marker_disable;
	
	short data_partitioned;

	short reversible_vlc;

	short newpred_enable;
	short requested_upstream_message_type;
	short newpred_segment_type;

	short reduced_resolution_vop_enable;

	short scalability;

	short hierarchy_type;
	short rec_layer_id;
	short ref_layer_samping_direc;
	short hor_sampling_factor_n;
    short hor_sampling_factor_m;
	short vert_sampling_factor_n;
	short vert_sampling_factor_m;

	short enhancement_type;

	short use_ref_shape;
	short use_ref_textutr;
	short shape_hor_sampling_factor_n;
	short shape_hor_sampling_factor_m;
    short shape_vert_sampling_factor_n;
	short shape_vert_sampling_factor_m;

}VolInfo;


typedef struct{
	short *Y;
	short *Cb;
	short *Cr;
}Image;

typedef struct{
	unsigned char *Y;
	unsigned char *Cb;
	unsigned char *Cr;
}Image8;


typedef struct{
	/*  frame number  */
	short iFrameNo;
    
	/*  frame rate  */
    short iFrameRate;

	/*  BitRate */
	int iBitsPerSecoder;

	/*  GOP  */
	short iKeyFrameInterval;

	short quant_type;
	
	short iWidth;
	short iHeight;

    /*  VOL information  */
	VolInfo*   pVol;
	VolInfo    vol;
	
	/*  3 frames information   */
    FrameInfo frameinfo[2];

	FrameInfo *pCurFrameInfo;
	FrameInfo *pForFrameInfo;

	Image8  image8[2];
	Image8 *pCurImage8;          
	Image8 *pForImage8;

	/*  time information  */
	long		iOldRefDisplayTimeBase;
	long		iNewRefDisplayTimeBase;
	long		iOldRefDisplayTime;
	long		iNewRefDisplayTime;
    long		iLastRefEncodeTime;
	long		iCurEncodeTime;
}Encoder;

#endif