common.h
资源名称:X264CODEC.rar [点击查看]
上传用户:lctgjx
上传日期:2022-06-04
资源大小:8887k
文件大小:22k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
Visual C++
- /*****************************************************************************
- * common.h: h264 encoder
- *****************************************************************************
- * Copyright (C) 2003-2008 x264 project
- *
- * Authors: Laurent Aimar <fenrir@via.ecp.fr>
- * Loren Merritt <lorenm@u.washington.edu>
- *
- * This program 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.
- *
- * This program 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., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
- *****************************************************************************/
- #ifndef X264_COMMON_H
- #define X264_COMMON_H
- /****************************************************************************
- * Macros
- ****************************************************************************/
- #define X264_MIN(a,b) ( (a)<(b) ? (a) : (b) )
- #define X264_MAX(a,b) ( (a)>(b) ? (a) : (b) )
- #define X264_MIN3(a,b,c) X264_MIN((a),X264_MIN((b),(c)))
- #define X264_MAX3(a,b,c) X264_MAX((a),X264_MAX((b),(c)))
- #define X264_MIN4(a,b,c,d) X264_MIN((a),X264_MIN3((b),(c),(d)))
- #define X264_MAX4(a,b,c,d) X264_MAX((a),X264_MAX3((b),(c),(d)))
- #define XCHG(type,a,b) do{ type t = a; a = b; b = t; } while(0)
- #define FIX8(f) ((int)(f*(1<<8)+.5))
- #define CHECKED_MALLOC( var, size )
- do {
- var = x264_malloc( size );
- if( !var )
- goto fail;
- } while( 0 )
- #define CHECKED_MALLOCZERO( var, size )
- do {
- CHECKED_MALLOC( var, size );
- memset( var, 0, size );
- } while( 0 )
- #define X264_BFRAME_MAX 16
- #define X264_THREAD_MAX 128
- #define X264_PCM_COST (386*8)
- #define X264_LOOKAHEAD_MAX 250
- // arbitrary, but low because SATD scores are 1/4 normal
- #define X264_LOOKAHEAD_QP 12
- // number of pixels (per thread) in progress at any given time.
- // 16 for the macroblock in progress + 3 for deblocking + 3 for motion compensation filter + 2 for extra safety
- #define X264_THREAD_HEIGHT 24
- /****************************************************************************
- * Includes
- ****************************************************************************/
- #include "osdep.h"
- #include <stdarg.h>
- #include <stddef.h>
- #include <stdlib.h>
- #include <string.h>
- #include <assert.h>
- #include <limits.h>
- #include "x264.h"
- #include "bs.h"
- #include "set.h"
- #include "predict.h"
- #include "pixel.h"
- #include "mc.h"
- #include "frame.h"
- #include "dct.h"
- #include "cabac.h"
- #include "quant.h"
- /****************************************************************************
- * General functions
- ****************************************************************************/
- /* x264_malloc : will do or emulate a memalign
- * you have to use x264_free for buffers allocated with x264_malloc */
- void *x264_malloc( int );
- void x264_free( void * );
- /* x264_slurp_file: malloc space for the whole file and read it */
- char *x264_slurp_file( const char *filename );
- /* mdate: return the current date in microsecond */
- int64_t x264_mdate( void );
- /* x264_param2string: return a (malloced) string containing most of
- * the encoding options */
- char *x264_param2string( x264_param_t *p, int b_res );
- int x264_nal_encode( uint8_t *dst, int b_annexb, x264_nal_t *nal );
- /* log */
- void x264_log( x264_t *h, int i_level, const char *psz_fmt, ... );
- void x264_reduce_fraction( int *n, int *d );
- void x264_init_vlc_tables();
- static inline uint8_t x264_clip_uint8( int x )
- {
- return x&(~255) ? (-x)>>31 : x;
- }
- static inline int x264_clip3( int v, int i_min, int i_max )
- {
- return ( (v < i_min) ? i_min : (v > i_max) ? i_max : v );
- }
- static inline double x264_clip3f( double v, double f_min, double f_max )
- {
- return ( (v < f_min) ? f_min : (v > f_max) ? f_max : v );
- }
- static inline int x264_median( int a, int b, int c )
- {
- int t = (a-b)&((a-b)>>31);
- a -= t;
- b += t;
- b -= (b-c)&((b-c)>>31);
- b += (a-b)&((a-b)>>31);
- return b;
- }
- static inline void x264_median_mv( int16_t *dst, int16_t *a, int16_t *b, int16_t *c )
- {
- dst[0] = x264_median( a[0], b[0], c[0] );
- dst[1] = x264_median( a[1], b[1], c[1] );
- }
- static inline int x264_predictor_difference( int16_t (*mvc)[2], intptr_t i_mvc )
- {
- int sum = 0, i;
- for( i = 0; i < i_mvc-1; i++ )
- {
- sum += abs( mvc[i][0] - mvc[i+1][0] )
- + abs( mvc[i][1] - mvc[i+1][1] );
- }
- return sum;
- }
- static inline uint32_t x264_cabac_amvd_sum( int16_t *mvdleft, int16_t *mvdtop )
- {
- int amvd0 = abs(mvdleft[0]) + abs(mvdtop[0]);
- int amvd1 = abs(mvdleft[1]) + abs(mvdtop[1]);
- amvd0 = (amvd0 > 2) + (amvd0 > 32);
- amvd1 = (amvd1 > 2) + (amvd1 > 32);
- return amvd0 + (amvd1<<16);
- }
- extern const uint8_t x264_exp2_lut[64];
- extern const float x264_log2_lut[128];
- extern const float x264_log2_lz_lut[32];
- /* Not a general-purpose function; multiplies input by -1/6 to convert
- * qp to qscale. */
- static ALWAYS_INLINE int x264_exp2fix8( float x )
- {
- //C程序不能中间定义变量 --@lia
- int i;
- if( x >= 512.f/6.f ) return 0;
- if( x <= -512.f/6.f ) return 0xffff;
- //C程序不能中间定义变量 --@lia
- //int
- i = x*(-64.f/6.f) + 512;
- return (x264_exp2_lut[i&63]+256) << (i>>6) >> 8;
- }
- static ALWAYS_INLINE float x264_log2( uint32_t x )
- {
- int lz = x264_clz( x );
- return x264_log2_lut[(x<<lz>>24)&0x7f] + x264_log2_lz_lut[lz];
- }
- /****************************************************************************
- *
- ****************************************************************************/
- enum slice_type_e
- {
- SLICE_TYPE_P = 0,
- SLICE_TYPE_B = 1,
- SLICE_TYPE_I = 2,
- SLICE_TYPE_SP = 3,
- SLICE_TYPE_SI = 4
- };
- static const char slice_type_to_char[] = { 'P', 'B', 'I', 'S', 'S' };
- typedef struct
- {
- x264_sps_t *sps;
- x264_pps_t *pps;
- int i_type;
- int i_first_mb;
- int i_last_mb;
- int i_pps_id;
- int i_frame_num;
- int b_mbaff;
- int b_field_pic;
- int b_bottom_field;
- int i_idr_pic_id; /* -1 if nal_type != 5 */
- int i_poc_lsb;
- int i_delta_poc_bottom;
- int i_delta_poc[2];
- int i_redundant_pic_cnt;
- int b_direct_spatial_mv_pred;
- int b_num_ref_idx_override;
- int i_num_ref_idx_l0_active;
- int i_num_ref_idx_l1_active;
- int b_ref_pic_list_reordering_l0;
- int b_ref_pic_list_reordering_l1;
- struct {
- int idc;
- int arg;
- } ref_pic_list_order[2][16];
- int i_cabac_init_idc;
- int i_qp;
- int i_qp_delta;
- int b_sp_for_swidth;
- int i_qs_delta;
- /* deblocking filter */
- int i_disable_deblocking_filter_idc;
- int i_alpha_c0_offset;
- int i_beta_offset;
- } x264_slice_header_t;
- typedef struct x264_lookahead_t
- {
- volatile uint8_t b_exit_thread;
- uint8_t b_thread_active;
- uint8_t b_analyse_keyframe;
- int i_last_idr;
- int i_slicetype_length;
- x264_frame_t *last_nonb;
- x264_synch_frame_list_t ifbuf;
- x264_synch_frame_list_t next;
- x264_synch_frame_list_t ofbuf;
- } x264_lookahead_t;
- /* From ffmpeg
- */
- #define X264_SCAN8_SIZE (6*8)
- #define X264_SCAN8_0 (4+1*8)
- static const int x264_scan8[16+2*4+3] =
- {
- /* Luma */
- 4+1*8, 5+1*8, 4+2*8, 5+2*8,
- 6+1*8, 7+1*8, 6+2*8, 7+2*8,
- 4+3*8, 5+3*8, 4+4*8, 5+4*8,
- 6+3*8, 7+3*8, 6+4*8, 7+4*8,
- /* Cb */
- 1+1*8, 2+1*8,
- 1+2*8, 2+2*8,
- /* Cr */
- 1+4*8, 2+4*8,
- 1+5*8, 2+5*8,
- /* Luma DC */
- 4+5*8,
- /* Chroma DC */
- 5+5*8, 6+5*8
- };
- /*
- 0 1 2 3 4 5 6 7
- 0
- 1 B B L L L L
- 2 B B L L L L
- 3 L L L L
- 4 R R L L L L
- 5 R R DyDuDv
- */
- typedef struct x264_ratecontrol_t x264_ratecontrol_t;
- struct x264_t
- {
- /* encoder parameters */
- x264_param_t param;
- x264_t *thread[X264_THREAD_MAX+1];
- x264_pthread_t thread_handle;
- int b_thread_active;
- int i_thread_phase; /* which thread to use for the next frame */
- /* bitstream output */
- struct
- {
- int i_nal;
- int i_nals_allocated;
- x264_nal_t *nal;
- int i_bitstream; /* size of p_bitstream */
- uint8_t *p_bitstream; /* will hold data for all nal */
- bs_t bs;
- } out;
- uint8_t *nal_buffer;
- int nal_buffer_size;
- /**** thread synchronization starts here ****/
- /* frame number/poc */
- int i_frame;
- int i_frame_offset; /* decoding only */
- int i_frame_num; /* decoding only */
- int i_poc_msb; /* decoding only */
- int i_poc_lsb; /* decoding only */
- int i_poc; /* decoding only */
- int i_thread_num; /* threads only */
- int i_nal_type; /* threads only */
- int i_nal_ref_idc; /* threads only */
- /* We use only one SPS and one PPS */
- x264_sps_t sps_array[1];
- x264_sps_t *sps;
- x264_pps_t pps_array[1];
- x264_pps_t *pps;
- int i_idr_pic_id;
- /* quantization matrix for decoding, [cqm][qp%6][coef_y][coef_x] */
- int (*dequant4_mf[4])[4][4]; /* [4][6][4][4] */
- int (*dequant8_mf[2])[8][8]; /* [2][6][8][8] */
- /* quantization matrix for trellis, [cqm][qp][coef] */
- int (*unquant4_mf[4])[16]; /* [4][52][16] */
- int (*unquant8_mf[2])[64]; /* [2][52][64] */
- /* quantization matrix for deadzone */
- uint16_t (*quant4_mf[4])[16]; /* [4][52][16] */
- uint16_t (*quant8_mf[2])[64]; /* [2][52][64] */
- uint16_t (*quant4_bias[4])[16]; /* [4][52][16] */
- uint16_t (*quant8_bias[2])[64]; /* [2][52][64] */
- /* mv/ref cost arrays. Indexed by lambda instead of
- * qp because, due to rounding, some quantizers share
- * lambdas. This saves memory. */
- uint16_t *cost_mv[92];
- uint16_t *cost_mv_fpel[92][4];
- const uint8_t *chroma_qp_table; /* includes both the nonlinear luma->chroma mapping and chroma_qp_offset */
- ALIGNED_16( uint32_t nr_residual_sum[2][64] );
- ALIGNED_16( uint16_t nr_offset[2][64] );
- uint32_t nr_count[2];
- /* Slice header */
- x264_slice_header_t sh;
- /* cabac context */
- x264_cabac_t cabac;
- struct
- {
- /* Frames to be encoded (whose types have been decided) */
- x264_frame_t **current;
- /* Unused frames: 0 = fenc, 1 = fdec */
- x264_frame_t **unused[2];
- /* frames used for reference + sentinels */
- x264_frame_t *reference[16+2];
- int i_last_idr; /* Frame number of the last IDR */
- int i_input; /* Number of input frames already accepted */
- int i_max_dpb; /* Number of frames allocated in the decoded picture buffer */
- int i_max_ref0;
- int i_max_ref1;
- int i_delay; /* Number of frames buffered for B reordering */
- int b_have_lowres; /* Whether 1/2 resolution luma planes are being used */
- int b_have_sub8x8_esa;
- } frames;
- /* current frame being encoded */
- x264_frame_t *fenc;
- /* frame being reconstructed */
- x264_frame_t *fdec;
- /* references lists */
- int i_ref0;
- x264_frame_t *fref0[16+3]; /* ref list 0 */
- int i_ref1;
- x264_frame_t *fref1[16+3]; /* ref list 1 */
- int b_ref_reorder[2];
- /* Current MB DCT coeffs */
- struct
- {
- ALIGNED_16( int16_t luma16x16_dc[16] );
- ALIGNED_16( int16_t chroma_dc[2][4] );
- // FIXME share memory?
- ALIGNED_16( int16_t luma8x8[4][64] );
- ALIGNED_16( int16_t luma4x4[16+8][16] );
- } dct;
- /* MB table and cache for current frame/mb */
- struct
- {
- int i_mb_count; /* number of mbs in a frame */
- /* Strides */
- int i_mb_stride;
- int i_b8_stride;
- int i_b4_stride;
- /* Current index */
- int i_mb_x;
- int i_mb_y;
- int i_mb_xy;
- int i_b8_xy;
- int i_b4_xy;
- /* Search parameters */
- int i_me_method;
- int i_subpel_refine;
- int b_chroma_me;
- int b_trellis;
- int b_noise_reduction;
- int i_psy_rd; /* Psy RD strength--fixed point value*/
- int i_psy_trellis; /* Psy trellis strength--fixed point value*/
- int b_interlaced;
- /* Allowed qpel MV range to stay within the picture + emulated edge pixels */
- int mv_min[2];
- int mv_max[2];
- /* Subpel MV range for motion search.
- * same mv_min/max but includes levels' i_mv_range. */
- int mv_min_spel[2];
- int mv_max_spel[2];
- /* Fullpel MV range for motion search */
- int mv_min_fpel[2];
- int mv_max_fpel[2];
- /* neighboring MBs */
- unsigned int i_neighbour;
- unsigned int i_neighbour8[4]; /* neighbours of each 8x8 or 4x4 block that are available */
- unsigned int i_neighbour4[16]; /* at the time the block is coded */
- unsigned int i_neighbour_intra; /* for constrained intra pred */
- int i_mb_type_top;
- int i_mb_type_left;
- int i_mb_type_topleft;
- int i_mb_type_topright;
- int i_mb_prev_xy;
- int i_mb_top_xy;
- /**** thread synchronization ends here ****/
- /* subsequent variables are either thread-local or constant,
- * and won't be copied from one thread to another */
- /* mb table */
- int8_t *type; /* mb type */
- int8_t *qp; /* mb qp */
- int16_t *cbp; /* mb cbp: 0x0?: luma, 0x?0: chroma, 0x100: luma dc, 0x0200 and 0x0400: chroma dc (all set for PCM)*/
- int8_t (*intra4x4_pred_mode)[8]; /* intra4x4 pred mode. for non I4x4 set to I_PRED_4x4_DC(2) */
- /* actually has only 7 entries; set to 8 for write-combining optimizations */
- uint8_t (*non_zero_count)[16+4+4]; /* nzc. for I_PCM set to 16 */
- int8_t *chroma_pred_mode; /* chroma_pred_mode. cabac only. for non intra I_PRED_CHROMA_DC(0) */
- int16_t (*mv[2])[2]; /* mb mv. set to 0 for intra mb */
- int16_t (*mvd[2])[2]; /* mb mv difference with predict. set to 0 if intra. cabac only */
- int8_t *ref[2]; /* mb ref. set to -1 if non used (intra or Lx only) */
- int16_t (*mvr[2][32])[2]; /* 16x16 mv for each possible ref */
- int8_t *skipbp; /* block pattern for SKIP or DIRECT (sub)mbs. B-frames + cabac only */
- int8_t *mb_transform_size; /* transform_size_8x8_flag of each mb */
- uint8_t *intra_border_backup[2][3]; /* bottom pixels of the previous mb row, used for intra prediction after the framebuffer has been deblocked */
- uint8_t (*nnz_backup)[16]; /* when using cavlc + 8x8dct, the deblocker uses a modified nnz */
- /* current value */
- int i_type;
- int i_partition;
- ALIGNED_4( uint8_t i_sub_partition[4] );
- int b_transform_8x8;
- int i_cbp_luma;
- int i_cbp_chroma;
- int i_intra16x16_pred_mode;
- int i_chroma_pred_mode;
- /* skip flags for i4x4 and i8x8
- * 0 = encode as normal.
- * 1 (non-RD only) = the DCT is still in h->dct, restore fdec and skip reconstruction.
- * 2 (RD only) = the DCT has since been overwritten by RD; restore that too. */
- int i_skip_intra;
- /* skip flag for motion compensation */
- /* if we've already done MC, we don't need to do it again */
- int b_skip_mc;
- /* set to true if we are re-encoding a macroblock. */
- int b_reencode_mb;
- struct
- {
- /* space for p_fenc and p_fdec */
- #define FENC_STRIDE 16
- #define FDEC_STRIDE 32
- ALIGNED_16( uint8_t fenc_buf[24*FENC_STRIDE] );
- ALIGNED_16( uint8_t fdec_buf[27*FDEC_STRIDE] );
- /* i4x4 and i8x8 backup data, for skipping the encode stage when possible */
- ALIGNED_16( uint8_t i4x4_fdec_buf[16*16] );
- ALIGNED_16( uint8_t i8x8_fdec_buf[16*16] );
- ALIGNED_16( int16_t i8x8_dct_buf[3][64] );
- ALIGNED_16( int16_t i4x4_dct_buf[15][16] );
- uint32_t i4x4_nnz_buf[4];
- uint32_t i8x8_nnz_buf[4];
- int i4x4_cbp;
- int i8x8_cbp;
- /* Psy trellis DCT data */
- ALIGNED_16( int16_t fenc_dct8[4][64] );
- ALIGNED_16( int16_t fenc_dct4[16][16] );
- /* Psy RD SATD scores */
- int fenc_satd[4][4];
- int fenc_satd_sum;
- int fenc_sa8d[2][2];
- int fenc_sa8d_sum;
- /* pointer over mb of the frame to be compressed */
- uint8_t *p_fenc[3];
- /* pointer to the actual source frame, not a block copy */
- uint8_t *p_fenc_plane[3];
- /* pointer over mb of the frame to be reconstructed */
- uint8_t *p_fdec[3];
- /* pointer over mb of the references */
- int i_fref[2];
- uint8_t *p_fref[2][32][4+2]; /* last: lN, lH, lV, lHV, cU, cV */
- uint16_t *p_integral[2][16];
- /* fref stride */
- int i_stride[3];
- } pic;
- /* cache */
- struct
- {
- /* real intra4x4_pred_mode if I_4X4 or I_8X8, I_PRED_4x4_DC if mb available, -1 if not */
- int8_t intra4x4_pred_mode[X264_SCAN8_SIZE];
- /* i_non_zero_count if available else 0x80 */
- uint8_t non_zero_count[X264_SCAN8_SIZE];
- /* -1 if unused, -2 if unavailable */
- ALIGNED_4( int8_t ref[2][X264_SCAN8_SIZE] );
- /* 0 if not available */
- ALIGNED_16( int16_t mv[2][X264_SCAN8_SIZE][2] );
- ALIGNED_8( int16_t mvd[2][X264_SCAN8_SIZE][2] );
- /* 1 if SKIP or DIRECT. set only for B-frames + CABAC */
- ALIGNED_4( int8_t skip[X264_SCAN8_SIZE] );
- ALIGNED_16( int16_t direct_mv[2][X264_SCAN8_SIZE][2] );
- ALIGNED_4( int8_t direct_ref[2][X264_SCAN8_SIZE] );
- ALIGNED_4( int16_t pskip_mv[2] );
- /* number of neighbors (top and left) that used 8x8 dct */
- int i_neighbour_transform_size;
- int i_neighbour_interlaced;
- /* neighbor CBPs */
- int i_cbp_top;
- int i_cbp_left;
- } cache;
- /* */
- int i_qp; /* current qp */
- int i_chroma_qp;
- int i_last_qp; /* last qp */
- int i_last_dqp; /* last delta qp */
- int b_variable_qp; /* whether qp is allowed to vary per macroblock */
- int b_lossless;
- int b_direct_auto_read; /* take stats for --direct auto from the 2pass log */
- int b_direct_auto_write; /* analyse direct modes, to use and/or save */
- /* lambda values */
- int i_trellis_lambda2[2][2]; /* [luma,chroma][inter,intra] */
- int i_psy_rd_lambda;
- int i_chroma_lambda2_offset;
- /* B_direct and weighted prediction */
- int16_t dist_scale_factor[16][2];
- int16_t bipred_weight[32][4];
- /* maps fref1[0]'s ref indices into the current list0 */
- int8_t map_col_to_list0_buf[2]; // for negative indices
- int8_t map_col_to_list0[16];
- } mb;
- /* rate control encoding only */
- x264_ratecontrol_t *rc;
- /* stats */
- struct
- {
- /* Current frame stats */
- struct
- {
- /* MV bits (MV+Ref+Block Type) */
- int i_mv_bits;
- /* Texture bits (DCT coefs) */
- int i_tex_bits;
- /* ? */
- int i_misc_bits;
- /* MB type counts */
- int i_mb_count[19];
- int i_mb_count_i;
- int i_mb_count_p;
- int i_mb_count_skip;
- int i_mb_count_8x8dct[2];
- int i_mb_count_ref[2][32];
- int i_mb_partition[17];
- int i_mb_cbp[6];
- int i_mb_pred_mode[3][13];
- /* Adaptive direct mv pred */
- int i_direct_score[2];
- /* Metrics */
- int64_t i_ssd[3];
- double f_ssim;
- } frame;
- /* Cumulated stats */
- /* per slice info */
- int i_frame_count[5];
- int64_t i_frame_size[5];
- double f_frame_qp[5];
- int i_consecutive_bframes[X264_BFRAME_MAX+1];
- /* */
- int64_t i_ssd_global[5];
- double f_psnr_average[5];
- double f_psnr_mean_y[5];
- double f_psnr_mean_u[5];
- double f_psnr_mean_v[5];
- double f_ssim_mean_y[5];
- /* */
- int64_t i_mb_count[5][19];
- int64_t i_mb_partition[2][17];
- int64_t i_mb_count_8x8dct[2];
- int64_t i_mb_count_ref[2][2][32];
- int64_t i_mb_cbp[6];
- int64_t i_mb_pred_mode[3][13];
- /* */
- int i_direct_score[2];
- int i_direct_frames[2];
- } stat;
- void *scratch_buffer; /* for any temporary storage that doesn't want repeated malloc */
- /* CPU functions dependents */
- x264_predict_t predict_16x16[4+3];
- x264_predict_t predict_8x8c[4+3];
- x264_predict8x8_t predict_8x8[9+3];
- x264_predict_t predict_4x4[9+3];
- x264_predict_8x8_filter_t predict_8x8_filter;
- x264_pixel_function_t pixf;
- x264_mc_functions_t mc;
- x264_dct_function_t dctf;
- x264_zigzag_function_t zigzagf;
- x264_quant_function_t quantf;
- x264_deblock_function_t loopf;
- #if VISUALIZE
- struct visualize_t *visualize;
- #endif
- x264_lookahead_t *lookahead;
- };
- // included at the end because it needs x264_t
- #include "macroblock.h"
- #ifdef HAVE_MMX
- #include "x86/util.h"
- #endif
- #endif