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x264.h
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上传日期：2021-12-09
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文件大小：17k
源码类别：
Audio
开发平台：
Visual C++
- /*****************************************************************************
- * x264.h: h264 encoder library
- *****************************************************************************
- * 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_X264_H
- #define X264_X264_H
- #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 61
- /* x264_t:
- * opaque handler for encoder */
- typedef struct x264_t x264_t;
- /****************************************************************************
- * Initialisation structure and function.
- ****************************************************************************/
- /* CPU flags
- */
- #define X264_CPU_CACHELINE_32 0x000001 /* avoid memory loads that span the border between two cachelines */
- #define X264_CPU_CACHELINE_64 0x000002 /* 32/64 is the size of a cacheline in bytes */
- #define X264_CPU_ALTIVEC 0x000004
- #define X264_CPU_MMX 0x000008
- #define X264_CPU_MMXEXT 0x000010 /* MMX2 aka MMXEXT aka ISSE */
- #define X264_CPU_SSE 0x000020
- #define X264_CPU_SSE2 0x000040
- #define X264_CPU_SSE2_IS_SLOW 0x000080 /* avoid most SSE2 functions on Athlon64 */
- #define X264_CPU_SSE2_IS_FAST 0x000100 /* a few functions are only faster on Core2 and Phenom */
- #define X264_CPU_SSE3 0x000200
- #define X264_CPU_SSSE3 0x000400
- #define X264_CPU_PHADD_IS_FAST 0x000800 /* pre-Penryn Core2 have a uselessly slow PHADD instruction */
- #define X264_CPU_SSE4 0x001000 /* SSE4.1 */
- #define X264_CPU_STACK_MOD4 0x002000 /* if stack is only mod4 and not mod16 */
- /* 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_ME_TESA 4
- #define X264_CQM_FLAT 0
- #define X264_CQM_JVT 1
- #define X264_CQM_CUSTOM 2
- #define X264_RC_NONE -1
- #define X264_RC_CQP 0
- #define X264_RC_CRF 1
- #define X264_RC_ABR 2
- #define X264_AQ_NONE 0
- #define X264_AQ_LOCAL 1
- #define X264_AQ_GLOBAL 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", "tesa", 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
- * legacy only; nothing other than I420 is really supported.
- */
- #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_MAX 0x0009 /* end of list */
- #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
- /* Zones: override ratecontrol or other options for specific sections of the video.
- * See x264_encoder_reconfig() for which options can be changed.
- * If zones overlap, whichever comes later in the list takes precedence. */
- typedef struct
- {
- int i_start, i_end; /* range of frame numbers */
- int b_force_qp; /* whether to use qp vs bitrate factor */
- int i_qp;
- float f_bitrate_factor;
- struct x264_param_t *param;
- } x264_zone_t;
- typedef struct x264_param_t
- {
- /* CPU flags */
- unsigned int cpu;
- int i_threads; /* encode multiple frames in parallel */
- int b_deterministic; /* whether to allow non-deterministic optimizations when threaded */
- /* 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 b_pre_scenecut; /* compute scenecut on lowres 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 b_interlaced;
- 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;
- char *psz_dump_yuv; /* filename for reconstructed frames */
- /* 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_direct_8x8_inference; /* forbid 4x4 direct partitions. -1 = auto, based on level */
- int i_chroma_qp_offset;
- int i_me_method; /* motion estimation algorithm to use (X264_ME_*) */
- int i_me_range; /* integer pixel motion estimation search range (from predicted mv) */
- int i_mv_range; /* maximum length of a mv (in pixels). -1 = auto, based on level */
- int i_mv_range_thread; /* minimum space between threads. -1 = auto, based on number of threads. */
- int i_subpel_refine; /* subpixel motion estimation quality */
- int b_bidir_me; /* jointly optimize both MVs in B-frames */
- int b_chroma_me; /* chroma ME for subpel and mode decision in P-frames */
- int b_bframe_rdo; /* RD based mode decision for B-frames */
- int b_mixed_references; /* allow each mb partition in P-frames to have it's own reference number */
- int i_trellis; /* trellis RD quantization */
- int b_fast_pskip; /* early SKIP detection on P-frames */
- int b_dct_decimate; /* transform coefficient thresholding on P-frames */
- int i_noise_reduction; /* adaptive pseudo-deadzone */
- /* the deadzone size that will be used in luma quantization */
- int i_luma_deadzone[2]; /* {inter, intra} */
- int b_psnr; /* compute and print PSNR stats */
- int b_ssim; /* compute and print SSIM stats */
- } analyse;
- /* Rate control parameters */
- struct
- {
- int i_rc_method; /* X264_RC_* */
- int i_qp_constant; /* 0-51 */
- int i_qp_min; /* min allowed QP value */
- int i_qp_max; /* max allowed QP value */
- int i_qp_step; /* max QP step between frames */
- int i_bitrate;
- float f_rf_constant; /* 1pass VBR, nominal QP */
- float f_rate_tolerance;
- int i_vbv_max_bitrate;
- int i_vbv_buffer_size;
- float f_vbv_buffer_init; /* <=1: fraction of buffer_size. >1: kbit */
- float f_ip_factor;
- float f_pb_factor;
- int i_aq_mode; /* psy adaptive QP. (X264_AQ_*) */
- float f_aq_strength;
- /* 2pass */
- int b_stat_write; /* Enable stat writing in psz_stat_out */
- char *psz_stat_out;
- int b_stat_read; /* Read stat from psz_stat_in and use it */
- char *psz_stat_in;
- /* 2pass params (same as ffmpeg ones) */
- float f_qcompress; /* 0.0 => cbr, 1.0 => constant qp */
- float f_qblur; /* temporally blur quants */
- float f_complexity_blur; /* temporally blur complexity */
- x264_zone_t *zones; /* ratecontrol overrides */
- int i_zones; /* number of zone_t's */
- char *psz_zones; /* alternate method of specifying zones */
- } rc;
- /* Muxing parameters */
- int b_aud; /* generate access unit delimiters */
- int b_repeat_headers; /* put SPS/PPS before each keyframe */
- int i_sps_id; /* SPS and PPS id number */
- } x264_param_t;
- typedef struct {
- int level_idc;
- int mbps; /* max macroblock processing rate (macroblocks/sec) */
- int frame_size; /* max frame size (macroblocks) */
- int dpb; /* max decoded picture buffer (bytes) */
- int bitrate; /* max bitrate (kbit/sec) */
- int cpb; /* max vbv buffer (kbit) */
- int mv_range; /* max vertical mv component range (pixels) */
- int mvs_per_2mb; /* max mvs per 2 consecutive mbs. */
- int slice_rate; /* ?? */
- int bipred8x8; /* limit bipred to >=8x8 */
- int direct8x8; /* limit b_direct to >=8x8 */
- int frame_only; /* forbid interlacing */
- } x264_level_t;
- /* all of the levels defined in the standard, terminated by .level_idc=0 */
- extern const x264_level_t x264_levels[];
- /* x264_param_default:
- * fill x264_param_t with default values and do CPU detection */
- void x264_param_default( x264_param_t * );
- /* x264_param_parse:
- * set one parameter by name.
- * returns 0 on success, or returns one of the following errors.
- * note: BAD_VALUE occurs only if it can't even parse the value,
- * numerical range is not checked until x264_encoder_open() or
- * x264_encoder_reconfig().
- * value=NULL means "true" for boolean options, but is a BAD_VALUE for non-booleans. */
- #define X264_PARAM_BAD_NAME (-1)
- #define X264_PARAM_BAD_VALUE (-2)
- int x264_param_parse( x264_param_t *, const char *name, const char *value );
- /****************************************************************************
- * Picture structures and functions.
- ****************************************************************************/
- typedef struct
- {
- int i_csp;
- int i_plane;
- int i_stride[4];
- uint8_t *plane[4];
- } x264_image_t;
- typedef struct
- {
- /* In: force picture type (if not auto) XXX: ignored for now
- * Out: type of the picture encoded */
- int i_type;
- /* In: force quantizer for > 0 */
- int i_qpplus1;
- /* In: user pts, Out: pts of encoded picture (user)*/
- int64_t i_pts;
- /* In: raw data */
- x264_image_t img;
- } x264_picture_t;
- /* x264_picture_alloc:
- * alloc data for a picture. You must call x264_picture_clean on it. */
- void x264_picture_alloc( x264_picture_t *pic, int i_csp, int i_width, int i_height );
- /* x264_picture_clean:
- * free associated resource for a x264_picture_t allocated with
- * x264_picture_alloc ONLY */
- void x264_picture_clean( x264_picture_t *pic );
- /****************************************************************************
- * NAL structure and functions:
- ****************************************************************************/
- /* nal */
- enum nal_unit_type_e
- {
- NAL_UNKNOWN = 0,
- NAL_SLICE = 1,
- NAL_SLICE_DPA = 2,
- NAL_SLICE_DPB = 3,
- NAL_SLICE_DPC = 4,
- NAL_SLICE_IDR = 5, /* ref_idc != 0 */
- NAL_SEI = 6, /* ref_idc == 0 */
- NAL_SPS = 7,
- NAL_PPS = 8,
- NAL_AUD = 9,
- /* ref_idc == 0 for 6,9,10,11,12 */
- };
- enum nal_priority_e
- {
- NAL_PRIORITY_DISPOSABLE = 0,
- NAL_PRIORITY_LOW = 1,
- NAL_PRIORITY_HIGH = 2,
- NAL_PRIORITY_HIGHEST = 3,
- };
- typedef struct
- {
- int i_ref_idc; /* nal_priority_e */
- int i_type; /* nal_unit_type_e */
- /* This data are raw payload */
- int i_payload;
- uint8_t *p_payload;
- } x264_nal_t;
- /* x264_nal_encode:
- * encode a nal into a buffer, setting the size.
- * if b_annexeb then a long synch work is added
- * XXX: it currently doesn't check for overflow */
- int x264_nal_encode( void *, int *, int b_annexeb, x264_nal_t *nal );
- /* x264_nal_decode:
- * decode a buffer nal into a x264_nal_t */
- int x264_nal_decode( x264_nal_t *nal, void *, int );
- /****************************************************************************
- * Encoder functions:
- ****************************************************************************/
- /* x264_encoder_open:
- * create a new encoder handler, all parameters from x264_param_t are copied */
- x264_t *x264_encoder_open ( x264_param_t * );
- /* x264_encoder_reconfig:
- * change encoder options while encoding,
- * analysis-related parameters from x264_param_t are copied */
- int x264_encoder_reconfig( x264_t *, x264_param_t * );
- /* x264_encoder_headers:
- * return the SPS and PPS that will be used for the whole stream */
- int x264_encoder_headers( x264_t *, x264_nal_t **, int * );
- /* x264_encoder_encode:
- * encode one picture */
- int x264_encoder_encode ( x264_t *, x264_nal_t **, int *, x264_picture_t *, x264_picture_t * );
- /* x264_encoder_close:
- * close an encoder handler */
- void x264_encoder_close ( x264_t * );
- #endif
