mpeg2_internal.h

au1200 linux2.6.11 硬件解码mae驱动和maiplayer播放器源码

/*
 * mpeg2_internal.h
 * Copyright (C) 2000-2003 Michel Lespinasse <[e-mail]>
 * Copyright (C) 1999-2000 Aaron Holtzman <[e-mail]>
 *
 * This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
 * See http://libmpeg2.sourceforge.net/ for updates.
 *
 * mpeg2dec is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * mpeg2dec is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
#ifndef _MPEG2_INTERNAL_H_
#define _MPEG2_INTERNAL_H_

#ifdef USE_CMODELIF
/* C-Model is just emulated MAE Hardware */
#ifndef MAE_HW
#define MAE_HW
#endif
#endif

#if !defined(MAE_HW) && !defined(REF_BUILD)
/* default to C reference build if not defined */
#define REF_BUILD
#endif

#ifdef REF_BUILD
#define NO_PERF   /* HWG - enables much of the C-ref code */
#undef  USE_MAE
#undef  MAE_HW
#undef  NEW_MAE_DRIVER
#endif

// $PP
#include <stdio.h>

/* macroblock modes */
#define MACROBLOCK_INTRA 1
#define MACROBLOCK_PATTERN 2
#define MACROBLOCK_MOTION_BACKWARD 4
#define MACROBLOCK_MOTION_FORWARD 8
#define MACROBLOCK_QUANT 16
#define DCT_TYPE_INTERLACED 32
/* motion_type */
#define MOTION_TYPE_SHIFT 6
#define MC_FIELD 1
#define MC_FRAME 2
#define MC_16X8 2
#define MC_DMV 3
// $PP
#define MC_ZERO 0
#define MC_REUSE 4

/* picture structure */
#define TOP_FIELD 1
#define BOTTOM_FIELD 2
#define FRAME_PICTURE 3

/* picture coding type */
#define I_TYPE 1
#define P_TYPE 2
#define B_TYPE 3
#define D_TYPE 4

#define DUMP_FIELD 3
#define MARK_FIELD_START 2
#define MARK_START 1
#define DUMP       0

typedef void mpeg2_mc_fct (uint8_t *, const uint8_t *, int, int);

typedef struct 
{
  uint8_t * ref[2][3];
  uint8_t ** ref2[2];
  int pmv[2][2];
  int f_code[2];
} motion_t;

typedef void motion_parser_t (mpeg2_decoder_t * decoder,
                              motion_t * motion,
                              mpeg2_mc_fct * const * table);

enum
{
  ASPECT_RATIO_SQUARE_PIXEL,
  ASPECT_RATIO_4_3,
  ASPECT_RATIO_16_9,
  ASPECT_RATIO_221_100,
  ASPECT_RATIO_UNDEFINED
};

typedef struct
{
  unsigned int temp;
  
  unsigned int encoded_picture_height;
  unsigned int encoded_picture_width;
  
  unsigned int aspect_ratio;
  
  unsigned int display_timestamp;
  
  unsigned int frame_rate;
  
  unsigned int bit_rate;
}video_info;

typedef struct
{
  unsigned int uiFrameCount; // frame or field count
  unsigned int uiFrameType;  // current frame/field coding type
}mpeg2_status;

#define FRAMEPERIOD_SCALE   2  /* HWG050505 - frame period fractional bits */

struct mpeg2_decoder_s 
{
  /* first, state that carries information from one macroblock to the */
  /* next inside a slice, and is never used outside of mpeg2_slice() */
  /* bit parsing stuff */
  uint32_t bitstream_buf;		/* current 32 bit working set */
  int bitstream_bits;			/* used bits in working set */
  const uint8_t * bitstream_ptr;	/* buffer with stream data */
  
  uint8_t * dest[3];
  
  int offset;
  int stride;
  int uv_stride;
  int slice_stride;
  int slice_uv_stride;
  int stride_frame;
  unsigned int limit_x;
  unsigned int limit_y_16;
  unsigned int limit_y_8;
  unsigned int limit_y;
  
  /* Motion vectors */
  /* The f_ and b_ correspond to the forward and backward motion */
  /* predictors */
  motion_t b_motion;
  motion_t f_motion;
  motion_parser_t * motion_parser[5];
  
  int fwd_top_motion_vertical_field_select;
  int fwd_bot_motion_vertical_field_select;
  int bwd_top_motion_vertical_field_select;
  int bwd_bot_motion_vertical_field_select;
  
  /* predictor for DC coefficients in intra blocks */
  int16_t dc_dct_pred[3];
  
  /* DCT coefficients */
  int16_t DCTblock[64] ATTR_ALIGN(64);
  
  uint8_t * picture_dest[3];
  void (* convert) (void * convert_id, uint8_t * const * src, unsigned int v_offset);
  void * convert_id;
  
  int dmv_offset;
  unsigned int v_offset;
  
  /* now non-slice-specific information */
  
  /* sequence header stuff */
  uint16_t * quantizer_matrix[4];
  uint16_t (* chroma_quantizer[2])[64];
  uint16_t quantizer_prescale[4][32][64];
  
  // $PP
  /* sequence header stuff */
  uint8_t MAE_Quant_Matrix [4][64];
  
  /* The width and height of the picture snapped to macroblock units */
  int width;
  int height;
  int vertical_position_extension;
  int chroma_format;
  int aspect;
  
  /* picture header stuff */
  
  /* what type of picture this is (I, P, B, D) */
  int coding_type;
  
  /* picture coding extension stuff */
  
  /* quantization factor for intra dc coefficients */
  int intra_dc_precision;
  // $PP
  int intra_dc_mult;
  int intra_dc_pred_reset_value;
  
  /* top/bottom/both fields */
  int picture_structure;
  /* bool to indicate all predictions are frame based */
  int frame_pred_frame_dct;
  /* bool to indicate whether intra blocks have motion vectors */
  /* (for concealment) */
  int concealment_motion_vectors;
  /* bool to use different vlc tables */
  int intra_vlc_format;
  /* used for DMV MC */
  int top_field_first;
  
  /* stuff derived from bitstream */
  
  /* pointer to the zigzag scan we're supposed to be using */
  const uint8_t * scan;
  
  int second_field;
  
  unsigned int uiIFramesProcessed;
  unsigned int uiPFramesProcessed;
  unsigned int uiBFramesProcessed;
  int mpeg1;
  
  // $PP
  // flag to tell us if we are using C Model code
  // set from command line argument '-m'
  unsigned char *pYOut;
  unsigned char *pCbOut;
  unsigned char *pCrOut;
  unsigned char *pYUVOut[3][3];   // Used only when DRV_ENABLED is turned on
  unsigned char bAllocated;
  unsigned char bUseMAE;
  unsigned char bDumpFiles;
  unsigned char bDumpFinal;
  unsigned char bIntraMatrixChanged;
  unsigned char bInterMatrixChanged;
  int  iMBCount;
  unsigned char scan_type;
  int  iQuant_Scale;
  int  iQuant_Scale_Type;
  int  iMacroBlockModes;
  int  iRefType; // forward or backward, needed for dumping intermediate files
  int  other_x, other_y; // funky motion vectors used in DMV
  int  other_x1, other_y1; // funky motion vectors used in DMV
  unsigned int uiSkipFrameCount; 
  /* number of I frames to skip when falling behind, this defaults to 1, which means play all frames *
   * set to 2 to play every other I Frame, 3 for every 3rd i frame, etc                              */
  unsigned int uiSkipIFrames; 
  mpeg2_decode_mode_t uiDecodeMode; /* current decode mode */
  unsigned int        uiSpeed; /* current decode speed */
  unsigned int        bNewDecodeMode; /* New DecodeMode or Speed specified */
  mpeg2_decode_mode_t uiNewDecodeMode; /* next requested decode mode */
  unsigned int        uiNewSpeed; /* next requested decode speed */
  unsigned int  bFlushing;  /* should the decode be flushing */
  unsigned int  bDiscon;    /* Next frame is a discontinuity in data */
  unsigned int  uiOkToDecode;
  unsigned int  uiWaitForIFrame;
  mpeg_time_t   tCurrentPTS;
  unsigned int  uiTemporalOffset; /* running offset, used to maintain sequentially increasing uiTemporalNum */
  unsigned int  uiTemporalNum;
  
  /* MAE specific state variables */
  unsigned long ulSpecial;
  unsigned long ulOkToSubmit;
  unsigned long ulSubmitCalled;
  unsigned long ulDebugFlag;
  unsigned long uiPrevTnum;
  unsigned long ulInitDisplay;
  
  /* HWG050505+ for improved PTS interpolation */
  unsigned int  uiGOPCount;
  unsigned int  uiMaxTemporal; /* max temporal value found in current GOP */
  unsigned int  uiActualFramePeriod; /* FramePeriod adjusted by interpolation */
  
  mpeg_time_t   tNewPTS;
  unsigned char bNewPTS;
  unsigned int  uiFramesSinceNewPTS;
  int           iTemporalAtNewPTS;
  int           iPTSDrift;  /* drift between interpolated and recieved PTS */
  
  mpeg_time_t   tPTSLastSync;
  unsigned int  bSyncedPTS;
  int           iTemporalAtSyncPTS;
  unsigned int  uiFramesSincePTSSync;
  unsigned int  uiGOPsSincePTSSync;
  /* HWG050505- */
  
  uint8_t *pict_dest[3];
};

typedef struct 
{
  mpeg2_fbuf_t fbuf;
} fbuf_alloc_t;

struct mpeg2dec_s 
{
  mpeg2_decoder_t decoder;
  
  mpeg2_info_t info;
  
  uint32_t shift;
  int is_display_initialized;
  mpeg2_state_t (* action) (struct mpeg2dec_s * mpeg2dec);
  mpeg2_state_t state;
  uint32_t ext_state;
  
  /* allocated in init - gcc has problems allocating such big structures */
  uint8_t * chunk_buffer;
  /* pointer to start of the current chunk */
  uint8_t * chunk_start;
  /* pointer to current position in chunk_buffer */
  uint8_t * chunk_ptr;
  /* last start code ? */
  uint8_t code;
  
  /* picture tags */
  uint32_t tag_current, tag2_current, tag_previous, tag2_previous;
  int num_tags;
  int bytes_since_tag;
  
  int first;
  int alloc_index_user;
  int alloc_index;
  uint8_t first_decode_slice;
  uint8_t nb_decode_slices;
  
  unsigned int user_data_len;
  
  mpeg2_sequence_t new_sequence;
  mpeg2_sequence_t sequence;
  mpeg2_gop_t new_gop;
  mpeg2_gop_t gop;
  mpeg2_picture_t new_picture;
  mpeg2_picture_t pictures[4];
  mpeg2_picture_t * picture;
  /*const*/ mpeg2_fbuf_t * fbuf[3];	/* 0: current fbuf, 1-2: prediction fbufs */
  
  fbuf_alloc_t fbuf_alloc[3];
  int custom_fbuf;
  
  uint8_t * yuv_buf[3][3];
  int yuv_index;
  mpeg2_convert_t * convert;
  void * convert_arg;
  unsigned int convert_id_size;
  int convert_stride;
  void (* convert_start) (void * id, const mpeg2_fbuf_t * fbuf,
    const mpeg2_picture_t * picture, const mpeg2_gop_t * gop);
  
  uint8_t * buf_start;
  uint8_t * buf_end;
  
  int16_t display_offset_x, display_offset_y;
  
  int copy_matrix;
  int8_t q_scale_type, scaled[4];
  uint8_t quantizer_matrix[4][64];
  uint8_t new_quantizer_matrix[4][64];
  uint8_t MAE_New_Quant_Matrix[4][64];
  
  // $PP
  // flag to tell us if we are using C Model code
  // set from command line argument '-m'
  unsigned char bUseMAE;
  unsigned char bDumpFiles;
  unsigned char bDumpFinal;
#ifdef MAE_RENDERER
  unsigned long ulVideoOff;
#endif
};

typedef struct 
{
#ifdef ARCH_PPC
  uint8_t regv[12*16];
#endif
  int dummy;
} cpu_state_t;

/* cpu_accel.c */
uint32_t mpeg2_detect_accel (void);

/* cpu_state.c */
void mpeg2_cpu_state_init (uint32_t accel);

/* decode.c */
mpeg2_state_t mpeg2_seek_header (mpeg2dec_t * mpeg2dec);
mpeg2_state_t mpeg2_parse_header (mpeg2dec_t * mpeg2dec);

/* header.c */
void mpeg2_header_state_init (mpeg2dec_t * mpeg2dec);
void mpeg2_reset_info (mpeg2_info_t * info);
int mpeg2_header_sequence (mpeg2dec_t * mpeg2dec);
int mpeg2_header_gop (mpeg2dec_t * mpeg2dec);
mpeg2_state_t mpeg2_header_picture_start (mpeg2dec_t * mpeg2dec);
int mpeg2_header_picture (mpeg2dec_t * mpeg2dec);
int mpeg2_header_extension (mpeg2dec_t * mpeg2dec);
int mpeg2_header_user_data (mpeg2dec_t * mpeg2dec);
void mpeg2_header_sequence_finalize (mpeg2dec_t * mpeg2dec);
void mpeg2_header_gop_finalize (mpeg2dec_t * mpeg2dec);
void mpeg2_header_picture_finalize (mpeg2dec_t * mpeg2dec, uint32_t accels);
mpeg2_state_t mpeg2_header_slice_start (mpeg2dec_t * mpeg2dec);
mpeg2_state_t mpeg2_header_end (mpeg2dec_t * mpeg2dec);
void mpeg2_set_fbuf (mpeg2dec_t * mpeg2dec, int b_type);

/* idct.c */
void mpeg2_idct_init (uint32_t accel);

/* idct_mmx.c */
void mpeg2_idct_copy_mmxext (int16_t * block, uint8_t * dest, int stride);
void mpeg2_idct_add_mmxext (int last, int16_t * block, uint8_t * dest, int stride);
void mpeg2_idct_copy_mmx (int16_t * block, uint8_t * dest, int stride);
void mpeg2_idct_add_mmx (int last, int16_t * block, uint8_t * dest, int stride);
void mpeg2_idct_mmx_init (void);

/* idct_altivec.c */
void mpeg2_idct_copy_altivec (int16_t * block, uint8_t * dest, int stride);
void mpeg2_idct_add_altivec (int last, int16_t * block, uint8_t * dest, int stride);
void mpeg2_idct_altivec_init (void);

/* idct_alpha.c */
void mpeg2_idct_copy_mvi (int16_t * block, uint8_t * dest, int stride);
void mpeg2_idct_add_mvi (int last, int16_t * block, uint8_t * dest, int stride);
void mpeg2_idct_copy_alpha (int16_t * block, uint8_t * dest, int stride);
void mpeg2_idct_add_alpha (int last, int16_t * block, uint8_t * dest, int stride);
void mpeg2_idct_alpha_init (void);

/* motion_comp.c */
void mpeg2_mc_init (uint32_t accel);

typedef struct {
    mpeg2_mc_fct * put [8];
    mpeg2_mc_fct * avg [8];
} mpeg2_mc_t;

#define MPEG2_MC_EXTERN(x) mpeg2_mc_t mpeg2_mc_##x = {			  \
    {MC_put_o_16_##x, MC_put_x_16_##x, MC_put_y_16_##x, MC_put_xy_16_##x, \
     MC_put_o_8_##x,  MC_put_x_8_##x,  MC_put_y_8_##x,  MC_put_xy_8_##x}, \
    {MC_avg_o_16_##x, MC_avg_x_16_##x, MC_avg_y_16_##x, MC_avg_xy_16_##x, \
     MC_avg_o_8_##x,  MC_avg_x_8_##x,  MC_avg_y_8_##x,  MC_avg_xy_8_##x}  \
};

extern mpeg2_mc_t mpeg2_mc_c;
extern mpeg2_mc_t mpeg2_mc_mmx;
extern mpeg2_mc_t mpeg2_mc_mmxext;
extern mpeg2_mc_t mpeg2_mc_3dnow;
extern mpeg2_mc_t mpeg2_mc_altivec;
extern mpeg2_mc_t mpeg2_mc_alpha;
extern mpeg2_mc_t mpeg2_mc_vis;

#endif /* _MPEG2_INTERNAL_H_ */