x264.h

X264的纯C语言的的原码

/*****************************************************************************
 * x264.h: h264 encoder library
 *****************************************************************************
 * Copyright (C) 2003 Laurent Aimar
 * $Id: x264.h,v 1.1 2004/06/03 19:24:12 fenrir Exp $
 *
 * Authors: Laurent Aimar <[e-mail]>
 *
 * 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., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
 *****************************************************************************/

#ifndef _X264_H
#define _X264_H 1

#if !defined(_STDINT_H) && !defined(_STDINT_H_) && \
    !defined(_INTTYPES_H) && !defined(_INTTYPES_H_)
# ifdef _MSC_VER
#  pragma message("You must include stdint.h or inttypes.h before x264.h")
# else
#  warning You must include stdint.h or inttypes.h before x264.h
# endif
#endif

#include <stdarg.h>

#define X264_BUILD 49

/* x264_t:
 *      opaque handler for decoder and encoder */
typedef struct x264_t x264_t;

/****************************************************************************
 * Initialisation structure and function.
 ****************************************************************************/
/* CPU flags
 */
#define X264_CPU_MMX        0x000001    /* mmx */
#define X264_CPU_MMXEXT     0x000002    /* mmx-ext*/
#define X264_CPU_SSE        0x000004    /* sse */
#define X264_CPU_SSE2       0x000008    /* sse 2 */
#define X264_CPU_3DNOW      0x000010    /* 3dnow! */
#define X264_CPU_3DNOWEXT   0x000020    /* 3dnow! ext */
#define X264_CPU_ALTIVEC    0x000040    /* altivec */

/* Analyse flags
 */
#define X264_ANALYSE_I4x4       0x0001  /* Analyse i4x4 */
#define X264_ANALYSE_I8x8       0x0002  /* Analyse i8x8 (requires 8x8 transform) */
#define X264_ANALYSE_PSUB16x16  0x0010  /* Analyse p16x8, p8x16 and p8x8 */
#define X264_ANALYSE_PSUB8x8    0x0020  /* Analyse p8x4, p4x8, p4x4 */
#define X264_ANALYSE_BSUB16x16  0x0100  /* Analyse b16x8, b8x16 and b8x8 */
#define X264_DIRECT_PRED_NONE        0
#define X264_DIRECT_PRED_SPATIAL     1
#define X264_DIRECT_PRED_TEMPORAL    2
#define X264_DIRECT_PRED_AUTO        3
#define X264_ME_DIA                  0
#define X264_ME_HEX                  1
#define X264_ME_UMH                  2
#define X264_ME_ESA                  3
#define X264_CQM_FLAT                0
#define X264_CQM_JVT                 1
#define X264_CQM_CUSTOM              2

#define X264_RC_CQP                  0
#define X264_RC_CRF                  1
#define X264_RC_ABR                  2

static const char * const x264_direct_pred_names[] = { "none", "spatial", "temporal", "auto", 0 };
static const char * const x264_motion_est_names[] = { "dia", "hex", "umh", "esa", 0 };
static const char * const x264_overscan_names[] = { "undef", "show", "crop", 0 };
static const char * const x264_vidformat_names[] = { "component", "pal", "ntsc", "secam", "mac", "undef", 0 };
static const char * const x264_fullrange_names[] = { "off", "on", 0 };
static const char * const x264_colorprim_names[] = { "", "bt709", "undef", "", "bt470m", "bt470bg", "smpte170m", "smpte240m", "film", 0 };
static const char * const x264_transfer_names[] = { "", "bt709", "undef", "", "bt470m", "bt470bg", "smpte170m", "smpte240m", "linear", "log100", "log316", 0 };
static const char * const x264_colmatrix_names[] = { "GBR", "bt709", "undef", "", "fcc", "bt470bg", "smpte170m", "smpte240m", "YCgCo", 0 };

/* Colorspace type
 */
#define X264_CSP_MASK           0x00ff  /* */
#define X264_CSP_NONE           0x0000  /* Invalid mode     */
#define X264_CSP_I420           0x0001  /* yuv 4:2:0 planar */
#define X264_CSP_I422           0x0002  /* yuv 4:2:2 planar */
#define X264_CSP_I444           0x0003  /* yuv 4:4:4 planar */
#define X264_CSP_YV12           0x0004  /* yuv 4:2:0 planar */
#define X264_CSP_YUYV           0x0005  /* yuv 4:2:2 packed */
#define X264_CSP_RGB            0x0006  /* rgb 24bits       */
#define X264_CSP_BGR            0x0007  /* bgr 24bits       */
#define X264_CSP_BGRA           0x0008  /* bgr 32bits       */
#define X264_CSP_VFLIP          0x1000  /* */

/* Slice type
 */
#define X264_TYPE_AUTO          0x0000  /* Let x264 choose the right type */
#define X264_TYPE_IDR           0x0001
#define X264_TYPE_I             0x0002
#define X264_TYPE_P             0x0003
#define X264_TYPE_BREF          0x0004  /* Non-disposable B-frame */
#define X264_TYPE_B             0x0005
#define IS_X264_TYPE_I(x) ((x)==X264_TYPE_I || (x)==X264_TYPE_IDR)
#define IS_X264_TYPE_B(x) ((x)==X264_TYPE_B || (x)==X264_TYPE_BREF)

/* Log level
 */
#define X264_LOG_NONE          (-1)
#define X264_LOG_ERROR          0
#define X264_LOG_WARNING        1
#define X264_LOG_INFO           2
#define X264_LOG_DEBUG          3

typedef struct
{
    int i_start, i_end;
    int b_force_qp;
    int i_qp;
    float f_bitrate_factor;
} x264_zone_t;

typedef struct
{
    /* CPU flags */
    unsigned int cpu;
    int         i_threads;  /* divide each frame into multiple slices, encode in parallel */

    /* Video Properties */
    int         i_width;
    int         i_height;
    int         i_csp;  /* CSP of encoded bitstream, only i420 supported */
    int         i_level_idc; 
    int         i_frame_total; /* number of frames to encode if known, else 0 */

    struct
    {
        /* they will be reduced to be 0 < x <= 65535 and prime */
        int         i_sar_height;
        int         i_sar_width;

        int         i_overscan;    /* 0=undef, 1=no overscan, 2=overscan */
        
        /* see h264 annex E for the values of the following */
        int         i_vidformat;
        int         b_fullrange;
        int         i_colorprim;
        int         i_transfer;
        int         i_colmatrix;
        int         i_chroma_loc;    /* both top & bottom */
    } vui;

    int         i_fps_num;
    int         i_fps_den;

    /* Bitstream parameters */
    int         i_frame_reference;  /* Maximum number of reference frames */
    int         i_keyint_max;       /* Force an IDR keyframe at this interval */
    int         i_keyint_min;       /* Scenecuts closer together than this are coded as I, not IDR. */
    int         i_scenecut_threshold; /* how aggressively to insert extra I frames */
    int         i_bframe;   /* how many b-frame between 2 references pictures */
    int         b_bframe_adaptive;
    int         i_bframe_bias;
    int         b_bframe_pyramid;   /* Keep some B-frames as references */

    int         b_deblocking_filter;
    int         i_deblocking_filter_alphac0;    /* [-6, 6] -6 light filter, 6 strong */
    int         i_deblocking_filter_beta;       /* [-6, 6]  idem */

    int         b_cabac;
    int         i_cabac_init_idc;

    int         i_cqm_preset;
    char        *psz_cqm_file;      /* JM format */
    uint8_t     cqm_4iy[16];        /* used only if i_cqm_preset == X264_CQM_CUSTOM */
    uint8_t     cqm_4ic[16];
    uint8_t     cqm_4py[16];
    uint8_t     cqm_4pc[16];
    uint8_t     cqm_8iy[64];
    uint8_t     cqm_8py[64];

    /* Log */
    void        (*pf_log)( void *, int i_level, const char *psz, va_list );
    void        *p_log_private;
    int         i_log_level;
    int         b_visualize;

    /* Encoder analyser parameters */
    struct
    {
        unsigned int intra;     /* intra partitions */
        unsigned int inter;     /* inter partitions */

        int          b_transform_8x8;
        int          b_weighted_bipred; /* implicit weighting for B-frames */
        int          i_direct_mv_pred; /* spatial vs temporal mv prediction */
        int          i_chroma_qp_offset;

        int          i_me_method; /* motion estimation algorithm to use (X264_ME_*) */