English
mpegvideo.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：38k
源码类别：
流媒体/Mpeg4/MP4
开发平台：
Visual C++
- /*
- * Generic DCT based hybrid video encoder
- * Copyright (c) 2000, 2001, 2002 Fabrice Bellard.
- * Copyright (c) 2002-2004 Michael Niedermayer
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
- /**
- * @file mpegvideo.h
- * mpegvideo header.
- */
- #ifndef FFMPEG_MPEGVIDEO_H
- #define FFMPEG_MPEGVIDEO_H
- #include "dsputil.h"
- #include "bitstream.h"
- #include "ratecontrol.h"
- #include "parser.h"
- #include "mpeg12data.h"
- #include "rl.h"
- #define FRAME_SKIPPED 100 ///< return value for header parsers if frame is not coded
- enum OutputFormat {
- FMT_MPEG1,
- FMT_H261,
- FMT_H263,
- FMT_MJPEG,
- FMT_H264,
- };
- #define MPEG_BUF_SIZE (16 * 1024)
- #define QMAT_SHIFT_MMX 16
- #define QMAT_SHIFT 22
- #define MAX_FCODE 7
- #define MAX_MV 2048
- #define MAX_THREADS 8
- #define MAX_PICTURE_COUNT 32
- #define ME_MAP_SIZE 64
- #define ME_MAP_SHIFT 3
- #define ME_MAP_MV_BITS 11
- #define MAX_MB_BYTES (30*16*16*3/8 + 120)
- #define INPLACE_OFFSET 16
- /* Start codes. */
- #define SEQ_END_CODE 0x000001b7
- #define SEQ_START_CODE 0x000001b3
- #define GOP_START_CODE 0x000001b8
- #define PICTURE_START_CODE 0x00000100
- #define SLICE_MIN_START_CODE 0x00000101
- #define SLICE_MAX_START_CODE 0x000001af
- #define EXT_START_CODE 0x000001b5
- #define USER_START_CODE 0x000001b2
- /**
- * Picture.
- */
- typedef struct Picture{
- FF_COMMON_FRAME
- /**
- * halfpel luma planes.
- */
- uint8_t *interpolated[3];
- int16_t (*motion_val_base[2])[2];
- uint32_t *mb_type_base;
- #define MB_TYPE_INTRA MB_TYPE_INTRA4x4 //default mb_type if there is just one type
- #define IS_INTRA4x4(a) ((a)&MB_TYPE_INTRA4x4)
- #define IS_INTRA16x16(a) ((a)&MB_TYPE_INTRA16x16)
- #define IS_PCM(a) ((a)&MB_TYPE_INTRA_PCM)
- #define IS_INTRA(a) ((a)&7)
- #define IS_INTER(a) ((a)&(MB_TYPE_16x16|MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8))
- #define IS_SKIP(a) ((a)&MB_TYPE_SKIP)
- #define IS_INTRA_PCM(a) ((a)&MB_TYPE_INTRA_PCM)
- #define IS_INTERLACED(a) ((a)&MB_TYPE_INTERLACED)
- #define IS_DIRECT(a) ((a)&MB_TYPE_DIRECT2)
- #define IS_GMC(a) ((a)&MB_TYPE_GMC)
- #define IS_16X16(a) ((a)&MB_TYPE_16x16)
- #define IS_16X8(a) ((a)&MB_TYPE_16x8)
- #define IS_8X16(a) ((a)&MB_TYPE_8x16)
- #define IS_8X8(a) ((a)&MB_TYPE_8x8)
- #define IS_SUB_8X8(a) ((a)&MB_TYPE_16x16) //note reused
- #define IS_SUB_8X4(a) ((a)&MB_TYPE_16x8) //note reused
- #define IS_SUB_4X8(a) ((a)&MB_TYPE_8x16) //note reused
- #define IS_SUB_4X4(a) ((a)&MB_TYPE_8x8) //note reused
- #define IS_ACPRED(a) ((a)&MB_TYPE_ACPRED)
- #define IS_QUANT(a) ((a)&MB_TYPE_QUANT)
- #define IS_DIR(a, part, list) ((a) & (MB_TYPE_P0L0<<((part)+2*(list))))
- #define USES_LIST(a, list) ((a) & ((MB_TYPE_P0L0|MB_TYPE_P1L0)<<(2*(list)))) ///< does this mb use listX, note does not work if subMBs
- #define HAS_CBP(a) ((a)&MB_TYPE_CBP)
- int field_poc[2]; ///< h264 top/bottom POC
- int poc; ///< h264 frame POC
- int frame_num; ///< h264 frame_num (raw frame_num from slice header)
- int pic_id; /**< h264 pic_num (short -> no wrap version of pic_num,
- pic_num & max_pic_num; long -> long_pic_num) */
- int long_ref; ///< 1->long term reference 0->short term reference
- int ref_poc[2][16]; ///< h264 POCs of the frames used as reference
- int ref_count[2]; ///< number of entries in ref_poc
- int mb_var_sum; ///< sum of MB variance for current frame
- int mc_mb_var_sum; ///< motion compensated MB variance for current frame
- uint16_t *mb_var; ///< Table for MB variances
- uint16_t *mc_mb_var; ///< Table for motion compensated MB variances
- uint8_t *mb_mean; ///< Table for MB luminance
- int32_t *mb_cmp_score; ///< Table for MB cmp scores, for mb decision FIXME remove
- int b_frame_score; /* */
- } Picture;
- struct MpegEncContext;
- /**
- * Motion estimation context.
- */
- typedef struct MotionEstContext{
- AVCodecContext *avctx;
- int skip; ///< set if ME is skipped for the current MB
- int co_located_mv[4][2]; ///< mv from last P-frame for direct mode ME
- int direct_basis_mv[4][2];
- uint8_t *scratchpad; ///< data area for the ME algo, so that the ME does not need to malloc/free
- uint8_t *best_mb;
- uint8_t *temp_mb[2];
- uint8_t *temp;
- int best_bits;
- uint32_t *map; ///< map to avoid duplicate evaluations
- uint32_t *score_map; ///< map to store the scores
- int map_generation;
- int pre_penalty_factor;
- int penalty_factor; /*!< an estimate of the bits required to
- code a given mv value, e.g. (1,0) takes
- more bits than (0,0). We have to
- estimate whether any reduction in
- residual is worth the extra bits. */
- int sub_penalty_factor;
- int mb_penalty_factor;
- int flags;
- int sub_flags;
- int mb_flags;
- int pre_pass; ///< = 1 for the pre pass
- int dia_size;
- int xmin;
- int xmax;
- int ymin;
- int ymax;
- int pred_x;
- int pred_y;
- uint8_t *src[4][4];
- uint8_t *ref[4][4];
- int stride;
- int uvstride;
- /* temp variables for picture complexity calculation */
- int mc_mb_var_sum_temp;
- int mb_var_sum_temp;
- int scene_change_score;
- /* cmp, chroma_cmp;*/
- op_pixels_func (*hpel_put)[4];
- op_pixels_func (*hpel_avg)[4];
- qpel_mc_func (*qpel_put)[16];
- qpel_mc_func (*qpel_avg)[16];
- uint8_t (*mv_penalty)[MAX_MV*2+1]; ///< amount of bits needed to encode a MV
- uint8_t *current_mv_penalty;
- int (*sub_motion_search)(struct MpegEncContext * s,
- int *mx_ptr, int *my_ptr, int dmin,
- int src_index, int ref_index,
- int size, int h);
- }MotionEstContext;
- /**
- * MpegEncContext.
- */
- typedef struct MpegEncContext {
- struct AVCodecContext *avctx;
- /* the following parameters must be initialized before encoding */
- int width, height;///< picture size. must be a multiple of 16
- int gop_size;
- int intra_only; ///< if true, only intra pictures are generated
- int bit_rate; ///< wanted bit rate
- enum OutputFormat out_format; ///< output format
- int h263_pred; ///< use mpeg4/h263 ac/dc predictions
- /* the following codec id fields are deprecated in favor of codec_id */
- int h263_plus; ///< h263 plus headers
- int h263_msmpeg4; ///< generate MSMPEG4 compatible stream (deprecated, use msmpeg4_version instead)
- int h263_flv; ///< use flv h263 header
- enum CodecID codec_id; /* see CODEC_ID_xxx */
- int fixed_qscale; ///< fixed qscale if non zero
- int encoding; ///< true if we are encoding (vs decoding)
- int flags; ///< AVCodecContext.flags (HQ, MV4, ...)
- int flags2; ///< AVCodecContext.flags2
- int max_b_frames; ///< max number of b-frames for encoding
- int luma_elim_threshold;
- int chroma_elim_threshold;
- int strict_std_compliance; ///< strictly follow the std (MPEG4, ...)
- int workaround_bugs; ///< workaround bugs in encoders which cannot be detected automatically
- int codec_tag; ///< internal codec_tag upper case converted from avctx codec_tag
- int stream_codec_tag; ///< internal stream_codec_tag upper case converted from avctx stream_codec_tag
- /* the following fields are managed internally by the encoder */
- /** bit output */
- PutBitContext pb;
- /* sequence parameters */
- int context_initialized;
- int input_picture_number; ///< used to set pic->display_picture_number, should not be used for/by anything else
- int coded_picture_number; ///< used to set pic->coded_picture_number, should not be used for/by anything else
- int picture_number; //FIXME remove, unclear definition
- int picture_in_gop_number; ///< 0-> first pic in gop, ...
- int b_frames_since_non_b; ///< used for encoding, relative to not yet reordered input
- int64_t user_specified_pts;///< last non zero pts from AVFrame which was passed into avcodec_encode_video()
- int mb_width, mb_height; ///< number of MBs horizontally & vertically
- int mb_stride; ///< mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11
- int b8_stride; ///< 2*mb_width+1 used for some 8x8 block arrays to allow simple addressing
- int b4_stride; ///< 4*mb_width+1 used for some 4x4 block arrays to allow simple addressing
- int h_edge_pos, v_edge_pos;///< horizontal / vertical position of the right/bottom edge (pixel replication)
- int mb_num; ///< number of MBs of a picture
- int linesize; ///< line size, in bytes, may be different from width
- int uvlinesize; ///< line size, for chroma in bytes, may be different from width
- Picture *picture; ///< main picture buffer
- Picture **input_picture; ///< next pictures on display order for encoding
- Picture **reordered_input_picture; ///< pointer to the next pictures in codedorder for encoding
- int start_mb_y; ///< start mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
- int end_mb_y; ///< end mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
- struct MpegEncContext *thread_context[MAX_THREADS];
- /**
- * copy of the previous picture structure.
- * note, linesize & data, might not match the previous picture (for field pictures)
- */
- Picture last_picture;
- /**
- * copy of the next picture structure.
- * note, linesize & data, might not match the next picture (for field pictures)
- */
- Picture next_picture;
- /**
- * copy of the source picture structure for encoding.
- * note, linesize & data, might not match the source picture (for field pictures)
- */
- Picture new_picture;
- /**
- * copy of the current picture structure.
- * note, linesize & data, might not match the current picture (for field pictures)
- */
- Picture current_picture; ///< buffer to store the decompressed current picture
- Picture *last_picture_ptr; ///< pointer to the previous picture.
- Picture *next_picture_ptr; ///< pointer to the next picture (for bidir pred)
- Picture *current_picture_ptr; ///< pointer to the current picture
- uint8_t *visualization_buffer[3]; //< temporary buffer vor MV visualization
- int last_dc[3]; ///< last DC values for MPEG1
- int16_t *dc_val_base;
- int16_t *dc_val[3]; ///< used for mpeg4 DC prediction, all 3 arrays must be continuous
- int16_t dc_cache[4*5];
- int y_dc_scale, c_dc_scale;
- const uint8_t *y_dc_scale_table; ///< qscale -> y_dc_scale table
- const uint8_t *c_dc_scale_table; ///< qscale -> c_dc_scale table
- const uint8_t *chroma_qscale_table; ///< qscale -> chroma_qscale (h263)
- uint8_t *coded_block_base;
- uint8_t *coded_block; ///< used for coded block pattern prediction (msmpeg4v3, wmv1)
- int16_t (*ac_val_base)[16];
- int16_t (*ac_val[3])[16]; ///< used for for mpeg4 AC prediction, all 3 arrays must be continuous
- int ac_pred;
- uint8_t *prev_pict_types; ///< previous picture types in bitstream order, used for mb skip
- #define PREV_PICT_TYPES_BUFFER_SIZE 256
- int mb_skipped; ///< MUST BE SET only during DECODING
- uint8_t *mbskip_table; /**< used to avoid copy if macroblock skipped (for black regions for example)
- and used for b-frame encoding & decoding (contains skip table of next P Frame) */
- uint8_t *mbintra_table; ///< used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
- uint8_t *cbp_table; ///< used to store cbp, ac_pred for partitioned decoding
- uint8_t *pred_dir_table; ///< used to store pred_dir for partitioned decoding
- uint8_t *allocated_edge_emu_buffer;
- uint8_t *edge_emu_buffer; ///< points into the middle of allocated_edge_emu_buffer
- uint8_t *rd_scratchpad; ///< scratchpad for rate distortion mb decision
- uint8_t *obmc_scratchpad;
- uint8_t *b_scratchpad; ///< scratchpad used for writing into write only buffers
- int qscale; ///< QP
- int chroma_qscale; ///< chroma QP
- unsigned int lambda; ///< lagrange multipler used in rate distortion
- unsigned int lambda2; ///< (lambda*lambda) >> FF_LAMBDA_SHIFT
- int *lambda_table;
- int adaptive_quant; ///< use adaptive quantization
- int dquant; ///< qscale difference to prev qscale
- int pict_type; ///< FF_I_TYPE, FF_P_TYPE, FF_B_TYPE, ...
- int last_pict_type; //FIXME removes
- int last_non_b_pict_type; ///< used for mpeg4 gmc b-frames & ratecontrol
- int dropable;
- int frame_rate_index;
- int last_lambda_for[5]; ///< last lambda for a specific pict type
- int skipdct; ///< skip dct and code zero residual
- /* motion compensation */
- int unrestricted_mv; ///< mv can point outside of the coded picture
- int h263_long_vectors; ///< use horrible h263v1 long vector mode
- int decode; ///< if 0 then decoding will be skipped (for encoding b frames for example)
- DSPContext dsp; ///< pointers for accelerated dsp functions
- int f_code; ///< forward MV resolution
- int b_code; ///< backward MV resolution for B Frames (mpeg4)
- int16_t (*p_mv_table_base)[2];
- int16_t (*b_forw_mv_table_base)[2];
- int16_t (*b_back_mv_table_base)[2];
- int16_t (*b_bidir_forw_mv_table_base)[2];
- int16_t (*b_bidir_back_mv_table_base)[2];
- int16_t (*b_direct_mv_table_base)[2];
- int16_t (*p_field_mv_table_base[2][2])[2];
- int16_t (*b_field_mv_table_base[2][2][2])[2];
- int16_t (*p_mv_table)[2]; ///< MV table (1MV per MB) p-frame encoding
- int16_t (*b_forw_mv_table)[2]; ///< MV table (1MV per MB) forward mode b-frame encoding
- int16_t (*b_back_mv_table)[2]; ///< MV table (1MV per MB) backward mode b-frame encoding
- int16_t (*b_bidir_forw_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
- int16_t (*b_bidir_back_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
- int16_t (*b_direct_mv_table)[2]; ///< MV table (1MV per MB) direct mode b-frame encoding
- int16_t (*p_field_mv_table[2][2])[2]; ///< MV table (2MV per MB) interlaced p-frame encoding
- int16_t (*b_field_mv_table[2][2][2])[2];///< MV table (4MV per MB) interlaced b-frame encoding
- uint8_t (*p_field_select_table[2]);
- uint8_t (*b_field_select_table[2][2]);
- int me_method; ///< ME algorithm
- int mv_dir;
- #define MV_DIR_FORWARD 1
- #define MV_DIR_BACKWARD 2
- #define MV_DIRECT 4 ///< bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4)
- int mv_type;
- #define MV_TYPE_16X16 0 ///< 1 vector for the whole mb
- #define MV_TYPE_8X8 1 ///< 4 vectors (h263, mpeg4 4MV)
- #define MV_TYPE_16X8 2 ///< 2 vectors, one per 16x8 block
- #define MV_TYPE_FIELD 3 ///< 2 vectors, one per field
- #define MV_TYPE_DMV 4 ///< 2 vectors, special mpeg2 Dual Prime Vectors
- /**motion vectors for a macroblock
- first coordinate : 0 = forward 1 = backward
- second " : depend on type
- third " : 0 = x, 1 = y
- */
- int mv[2][4][2];
- int field_select[2][2];
- int last_mv[2][2][2]; ///< last MV, used for MV prediction in MPEG1 & B-frame MPEG4
- uint8_t *fcode_tab; ///< smallest fcode needed for each MV
- int16_t direct_scale_mv[2][64]; ///< precomputed to avoid divisions in ff_mpeg4_set_direct_mv
- MotionEstContext me;
- int no_rounding; /**< apply no rounding to motion compensation (MPEG4, msmpeg4, ...)
- for b-frames rounding mode is always 0 */
- int hurry_up; /**< when set to 1 during decoding, b frames will be skipped
- when set to 2 idct/dequant will be skipped too */
- /* macroblock layer */
- int mb_x, mb_y;
- int mb_skip_run;
- int mb_intra;
- uint16_t *mb_type; ///< Table for candidate MB types for encoding
- #define CANDIDATE_MB_TYPE_INTRA 0x01
- #define CANDIDATE_MB_TYPE_INTER 0x02
- #define CANDIDATE_MB_TYPE_INTER4V 0x04
- #define CANDIDATE_MB_TYPE_SKIPPED 0x08
- //#define MB_TYPE_GMC 0x10
- #define CANDIDATE_MB_TYPE_DIRECT 0x10
- #define CANDIDATE_MB_TYPE_FORWARD 0x20
- #define CANDIDATE_MB_TYPE_BACKWARD 0x40
- #define CANDIDATE_MB_TYPE_BIDIR 0x80
- #define CANDIDATE_MB_TYPE_INTER_I 0x100
- #define CANDIDATE_MB_TYPE_FORWARD_I 0x200
- #define CANDIDATE_MB_TYPE_BACKWARD_I 0x400
- #define CANDIDATE_MB_TYPE_BIDIR_I 0x800
- #define CANDIDATE_MB_TYPE_DIRECT0 0x1000
- int block_index[6]; ///< index to current MB in block based arrays with edges
- int block_wrap[6];
- uint8_t *dest[3];
- int *mb_index2xy; ///< mb_index -> mb_x + mb_y*mb_stride
- /** matrix transmitted in the bitstream */
- uint16_t intra_matrix[64];
- uint16_t chroma_intra_matrix[64];
- uint16_t inter_matrix[64];
- uint16_t chroma_inter_matrix[64];
- #define QUANT_BIAS_SHIFT 8
- int intra_quant_bias; ///< bias for the quantizer
- int inter_quant_bias; ///< bias for the quantizer
- int min_qcoeff; ///< minimum encodable coefficient
- int max_qcoeff; ///< maximum encodable coefficient
- int ac_esc_length; ///< num of bits needed to encode the longest esc
- uint8_t *intra_ac_vlc_length;
- uint8_t *intra_ac_vlc_last_length;
- uint8_t *inter_ac_vlc_length;
- uint8_t *inter_ac_vlc_last_length;
- uint8_t *luma_dc_vlc_length;
- uint8_t *chroma_dc_vlc_length;
- #define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level))
- int coded_score[8];
- /** precomputed matrix (combine qscale and DCT renorm) */
- int (*q_intra_matrix)[64];
- int (*q_inter_matrix)[64];
- /** identical to the above but for MMX & these are not permutated, second 64 entries are bias*/
- uint16_t (*q_intra_matrix16)[2][64];
- uint16_t (*q_inter_matrix16)[2][64];
- int block_last_index[12]; ///< last non zero coefficient in block
- /* scantables */
- DECLARE_ALIGNED_8(ScanTable, intra_scantable);
- ScanTable intra_h_scantable;
- ScanTable intra_v_scantable;
- ScanTable inter_scantable; ///< if inter == intra then intra should be used to reduce tha cache usage
- /* noise reduction */
- int (*dct_error_sum)[64];
- int dct_count[2];
- uint16_t (*dct_offset)[64];
- void *opaque; ///< private data for the user
- /* bit rate control */
- int64_t wanted_bits;
- int64_t total_bits;
- int frame_bits; ///< bits used for the current frame
- int next_lambda; ///< next lambda used for retrying to encode a frame
- RateControlContext rc_context; ///< contains stuff only accessed in ratecontrol.c
- /* statistics, used for 2-pass encoding */
- int mv_bits;
- int header_bits;
- int i_tex_bits;
- int p_tex_bits;
- int i_count;
- int f_count;
- int b_count;
- int skip_count;
- int misc_bits; ///< cbp, mb_type
- int last_bits; ///< temp var used for calculating the above vars
- /* error concealment / resync */
- int error_count;
- uint8_t *error_status_table; ///< table of the error status of each MB
- #define VP_START 1 ///< current MB is the first after a resync marker
- #define AC_ERROR 2
- #define DC_ERROR 4
- #define MV_ERROR 8
- #define AC_END 16
- #define DC_END 32
- #define MV_END 64
- //FIXME some prefix?
- int resync_mb_x; ///< x position of last resync marker
- int resync_mb_y; ///< y position of last resync marker
- GetBitContext last_resync_gb; ///< used to search for the next resync marker
- int mb_num_left; ///< number of MBs left in this video packet (for partitioned Slices only)
- int next_p_frame_damaged; ///< set if the next p frame is damaged, to avoid showing trashed b frames
- int error_resilience;
- ParseContext parse_context;
- /* H.263 specific */
- int gob_index;
- int obmc; ///< overlapped block motion compensation
- /* H.263+ specific */
- int umvplus; ///< == H263+ && unrestricted_mv
- int h263_aic; ///< Advanded INTRA Coding (AIC)
- int h263_aic_dir; ///< AIC direction: 0 = left, 1 = top
- int h263_slice_structured;
- int alt_inter_vlc; ///< alternative inter vlc
- int modified_quant;
- int loop_filter;
- int custom_pcf;
- /* mpeg4 specific */
- int time_increment_bits; ///< number of bits to represent the fractional part of time
- int last_time_base;
- int time_base; ///< time in seconds of last I,P,S Frame
- int64_t time; ///< time of current frame
- int64_t last_non_b_time;
- uint16_t pp_time; ///< time distance between the last 2 p,s,i frames
- uint16_t pb_time; ///< time distance between the last b and p,s,i frame
- uint16_t pp_field_time;
- uint16_t pb_field_time; ///< like above, just for interlaced
- int shape;
- int vol_sprite_usage;
- int sprite_width;
- int sprite_height;
- int sprite_left;
- int sprite_top;
- int sprite_brightness_change;
- int num_sprite_warping_points;
- int real_sprite_warping_points;
- int sprite_offset[2][2]; ///< sprite offset[isChroma][isMVY]
- int sprite_delta[2][2]; ///< sprite_delta [isY][isMVY]
- int sprite_shift[2]; ///< sprite shift [isChroma]
- int mcsel;
- int quant_precision;
- int quarter_sample; ///< 1->qpel, 0->half pel ME/MC
- int scalability;
- int hierachy_type;
- int enhancement_type;
- int new_pred;
- int reduced_res_vop;
- int aspect_ratio_info; //FIXME remove
- int sprite_warping_accuracy;
- int low_latency_sprite;
- int data_partitioning; ///< data partitioning flag from header
- int partitioned_frame; ///< is current frame partitioned
- int rvlc; ///< reversible vlc
- int resync_marker; ///< could this stream contain resync markers
- int low_delay; ///< no reordering needed / has no b-frames
- int vo_type;
- int vol_control_parameters; ///< does the stream contain the low_delay flag, used to workaround buggy encoders
- int intra_dc_threshold; ///< QP above whch the ac VLC should be used for intra dc
- int use_intra_dc_vlc;
- PutBitContext tex_pb; ///< used for data partitioned VOPs
- PutBitContext pb2; ///< used for data partitioned VOPs
- int mpeg_quant;
- int t_frame; ///< time distance of first I -> B, used for interlaced b frames
- int padding_bug_score; ///< used to detect the VERY common padding bug in MPEG4
- /* divx specific, used to workaround (many) bugs in divx5 */
- int divx_version;
- int divx_build;
- int divx_packed;
- uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
- int bitstream_buffer_size;
- unsigned int allocated_bitstream_buffer_size;
- int xvid_build;
- /* lavc specific stuff, used to workaround bugs in libavcodec */
- int lavc_build;
- /* RV10 specific */
- int rv10_version; ///< RV10 version: 0 or 3
- int rv10_first_dc_coded[3];
- /* MJPEG specific */
- struct MJpegContext *mjpeg_ctx;
- int mjpeg_vsample[3]; ///< vertical sampling factors, default = {2, 1, 1}
- int mjpeg_hsample[3]; ///< horizontal sampling factors, default = {2, 1, 1}
- /* MSMPEG4 specific */
- int mv_table_index;
- int rl_table_index;
- int rl_chroma_table_index;
- int dc_table_index;
- int use_skip_mb_code;
- int slice_height; ///< in macroblocks
- int first_slice_line; ///< used in mpeg4 too to handle resync markers
- int flipflop_rounding;
- int msmpeg4_version; ///< 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8
- int per_mb_rl_table;
- int esc3_level_length;
- int esc3_run_length;
- /** [mb_intra][isChroma][level][run][last] */
- int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2];
- int inter_intra_pred;
- int mspel;
- /* decompression specific */
- GetBitContext gb;
- /* Mpeg1 specific */
- int gop_picture_number; ///< index of the first picture of a GOP based on fake_pic_num & mpeg1 specific
- int last_mv_dir; ///< last mv_dir, used for b frame encoding
- int broken_link; ///< no_output_of_prior_pics_flag
- uint8_t *vbv_delay_ptr; ///< pointer to vbv_delay in the bitstream
- /* MPEG2 specific - I wish I had not to support this mess. */
- int progressive_sequence;
- int mpeg_f_code[2][2];
- int picture_structure;
- /* picture type */
- #define PICT_TOP_FIELD 1
- #define PICT_BOTTOM_FIELD 2
- #define PICT_FRAME 3
- int intra_dc_precision;
- int frame_pred_frame_dct;
- int top_field_first;
- int concealment_motion_vectors;
- int q_scale_type;
- int intra_vlc_format;
- int alternate_scan;
- int repeat_first_field;
- int chroma_420_type;
- int chroma_format;
- #define CHROMA_420 1
- #define CHROMA_422 2
- #define CHROMA_444 3
- int chroma_x_shift;//depend on pix_format, that depend on chroma_format
- int chroma_y_shift;
- int progressive_frame;
- int full_pel[2];
- int interlaced_dct;
- int first_slice;
- int first_field; ///< is 1 for the first field of a field picture 0 otherwise
- /* RTP specific */
- int rtp_mode;
- uint8_t *ptr_lastgob;
- int swap_uv;//vcr2 codec is mpeg2 varint with UV swaped
- short * pblocks[12];
- DCTELEM (*block)[64]; ///< points to one of the following blocks
- DCTELEM (*blocks)[8][64]; // for HQ mode we need to keep the best block
- int (*decode_mb)(struct MpegEncContext *s, DCTELEM block[6][64]); // used by some codecs to avoid a switch()
- #define SLICE_OK 0
- #define SLICE_ERROR -1
- #define SLICE_END -2 ///<end marker found
- #define SLICE_NOEND -3 ///<no end marker or error found but mb count exceeded
- void (*dct_unquantize_mpeg1_intra)(struct MpegEncContext *s,
- DCTELEM *block/*align 16*/, int n, int qscale);
- void (*dct_unquantize_mpeg1_inter)(struct MpegEncContext *s,
- DCTELEM *block/*align 16*/, int n, int qscale);
- void (*dct_unquantize_mpeg2_intra)(struct MpegEncContext *s,
- DCTELEM *block/*align 16*/, int n, int qscale);
- void (*dct_unquantize_mpeg2_inter)(struct MpegEncContext *s,
- DCTELEM *block/*align 16*/, int n, int qscale);
- void (*dct_unquantize_h263_intra)(struct MpegEncContext *s,
- DCTELEM *block/*align 16*/, int n, int qscale);
- void (*dct_unquantize_h263_inter)(struct MpegEncContext *s,
- DCTELEM *block/*align 16*/, int n, int qscale);
- void (*dct_unquantize_h261_intra)(struct MpegEncContext *s,
- DCTELEM *block/*align 16*/, int n, int qscale);
- void (*dct_unquantize_h261_inter)(struct MpegEncContext *s,
- DCTELEM *block/*align 16*/, int n, int qscale);
- void (*dct_unquantize_intra)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
- DCTELEM *block/*align 16*/, int n, int qscale);
- void (*dct_unquantize_inter)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
- DCTELEM *block/*align 16*/, int n, int qscale);
- int (*dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
- int (*fast_dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
- void (*denoise_dct)(struct MpegEncContext *s, DCTELEM *block);
- } MpegEncContext;
- void MPV_decode_defaults(MpegEncContext *s);
- int MPV_common_init(MpegEncContext *s);
- void MPV_common_end(MpegEncContext *s);
- void MPV_decode_mb(MpegEncContext *s, DCTELEM block[12][64]);
- int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx);
- void MPV_frame_end(MpegEncContext *s);
- int MPV_encode_init(AVCodecContext *avctx);
- int MPV_encode_end(AVCodecContext *avctx);
- int MPV_encode_picture(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data);
- void MPV_common_init_mmx(MpegEncContext *s);
- void MPV_common_init_axp(MpegEncContext *s);
- void MPV_common_init_mlib(MpegEncContext *s);
- void MPV_common_init_mmi(MpegEncContext *s);
- void MPV_common_init_armv4l(MpegEncContext *s);
- void MPV_common_init_altivec(MpegEncContext *s);
- void ff_clean_intra_table_entries(MpegEncContext *s);
- void ff_draw_horiz_band(MpegEncContext *s, int y, int h);
- void ff_mpeg_flush(AVCodecContext *avctx);
- void ff_print_debug_info(MpegEncContext *s, AVFrame *pict);
- void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix);
- int ff_find_unused_picture(MpegEncContext *s, int shared);
- void ff_denoise_dct(MpegEncContext *s, DCTELEM *block);
- void ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src);
- const uint8_t *ff_find_start_code(const uint8_t *p, const uint8_t *end, uint32_t *state);
- void ff_er_frame_start(MpegEncContext *s);
- void ff_er_frame_end(MpegEncContext *s);
- void ff_er_add_slice(MpegEncContext *s, int startx, int starty, int endx, int endy, int status);
- int ff_dct_common_init(MpegEncContext *s);
- void ff_convert_matrix(DSPContext *dsp, int (*qmat)[64], uint16_t (*qmat16)[2][64],
- const uint16_t *quant_matrix, int bias, int qmin, int qmax, int intra);
- void ff_init_block_index(MpegEncContext *s);
- static inline void ff_update_block_index(MpegEncContext *s){
- const int block_size= 8>>s->avctx->lowres;
- s->block_index[0]+=2;
- s->block_index[1]+=2;
- s->block_index[2]+=2;
- s->block_index[3]+=2;
- s->block_index[4]++;
- s->block_index[5]++;
- s->dest[0]+= 2*block_size;
- s->dest[1]+= block_size;
- s->dest[2]+= block_size;
- }
- static inline int get_bits_diff(MpegEncContext *s){
- const int bits= put_bits_count(&s->pb);
- const int last= s->last_bits;
- s->last_bits = bits;
- return bits - last;
- }
- static inline int ff_h263_round_chroma(int x){
- static const uint8_t h263_chroma_roundtab[16] = {
- // 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
- 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1,
- };
- return h263_chroma_roundtab[x & 0xf] + (x >> 3);
- }
- /* motion_est.c */
- void ff_estimate_p_frame_motion(MpegEncContext * s,
- int mb_x, int mb_y);
- void ff_estimate_b_frame_motion(MpegEncContext * s,
- int mb_x, int mb_y);
- int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type);
- void ff_fix_long_p_mvs(MpegEncContext * s);
- void ff_fix_long_mvs(MpegEncContext * s, uint8_t *field_select_table, int field_select,
- int16_t (*mv_table)[2], int f_code, int type, int truncate);
- int ff_init_me(MpegEncContext *s);
- int ff_pre_estimate_p_frame_motion(MpegEncContext * s, int mb_x, int mb_y);
- int ff_epzs_motion_search(MpegEncContext * s, int *mx_ptr, int *my_ptr,
- int P[10][2], int src_index, int ref_index, int16_t (*last_mv)[2],
- int ref_mv_scale, int size, int h);
- int ff_get_mb_score(MpegEncContext * s, int mx, int my, int src_index,
- int ref_index, int size, int h, int add_rate);
- /* mpeg12.c */
- extern const uint8_t ff_mpeg1_dc_scale_table[128];
- void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
- void mpeg1_encode_mb(MpegEncContext *s,
- DCTELEM block[6][64],
- int motion_x, int motion_y);
- void ff_mpeg1_encode_init(MpegEncContext *s);
- void ff_mpeg1_encode_slice_header(MpegEncContext *s);
- void ff_mpeg1_clean_buffers(MpegEncContext *s);
- int ff_mpeg1_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size);
- extern const uint8_t ff_mpeg4_y_dc_scale_table[32];
- extern const uint8_t ff_mpeg4_c_dc_scale_table[32];
- extern const uint8_t ff_aic_dc_scale_table[32];
- extern const int16_t ff_mpeg4_default_intra_matrix[64];
- extern const int16_t ff_mpeg4_default_non_intra_matrix[64];
- extern const uint8_t ff_h263_chroma_qscale_table[32];
- extern const uint8_t ff_h263_loop_filter_strength[32];
- /* h261.c */
- void ff_h261_loop_filter(MpegEncContext *s);
- void ff_h261_reorder_mb_index(MpegEncContext* s);
- void ff_h261_encode_mb(MpegEncContext *s,
- DCTELEM block[6][64],
- int motion_x, int motion_y);
- void ff_h261_encode_picture_header(MpegEncContext * s, int picture_number);
- void ff_h261_encode_init(MpegEncContext *s);
- int ff_h261_get_picture_format(int width, int height);
- /* h263.c, h263dec.c */
- int ff_h263_decode_init(AVCodecContext *avctx);
- int ff_h263_decode_frame(AVCodecContext *avctx,
- void *data, int *data_size,
- const uint8_t *buf, int buf_size);
- int ff_h263_decode_end(AVCodecContext *avctx);
- void h263_encode_mb(MpegEncContext *s,
- DCTELEM block[6][64],
- int motion_x, int motion_y);
- void mpeg4_encode_mb(MpegEncContext *s,
- DCTELEM block[6][64],
- int motion_x, int motion_y);
- void h263_encode_picture_header(MpegEncContext *s, int picture_number);
- void ff_flv_encode_picture_header(MpegEncContext *s, int picture_number);
- void h263_encode_gob_header(MpegEncContext * s, int mb_line);
- int16_t *h263_pred_motion(MpegEncContext * s, int block, int dir,
- int *px, int *py);
- void mpeg4_pred_ac(MpegEncContext * s, DCTELEM *block, int n,
- int dir);
- void ff_set_mpeg4_time(MpegEncContext * s);
- void mpeg4_encode_picture_header(MpegEncContext *s, int picture_number);
- void h263_encode_init(MpegEncContext *s);
- void h263_decode_init_vlc(MpegEncContext *s);
- int h263_decode_picture_header(MpegEncContext *s);
- int ff_h263_decode_gob_header(MpegEncContext *s);
- int ff_mpeg4_decode_picture_header(MpegEncContext * s, GetBitContext *gb);
- void ff_h263_update_motion_val(MpegEncContext * s);
- void ff_h263_loop_filter(MpegEncContext * s);
- void ff_set_qscale(MpegEncContext * s, int qscale);
- int ff_h263_decode_mba(MpegEncContext *s);
- void ff_h263_encode_mba(MpegEncContext *s);
- int intel_h263_decode_picture_header(MpegEncContext *s);
- int flv_h263_decode_picture_header(MpegEncContext *s);
- int ff_h263_decode_mb(MpegEncContext *s,
- DCTELEM block[6][64]);
- int ff_mpeg4_decode_mb(MpegEncContext *s,
- DCTELEM block[6][64]);
- int h263_get_picture_format(int width, int height);
- void ff_mpeg4_encode_video_packet_header(MpegEncContext *s);
- void ff_mpeg4_clean_buffers(MpegEncContext *s);
- void ff_mpeg4_stuffing(PutBitContext * pbc);
- void ff_mpeg4_init_partitions(MpegEncContext *s);
- void ff_mpeg4_merge_partitions(MpegEncContext *s);
- void ff_clean_mpeg4_qscales(MpegEncContext *s);
- void ff_clean_h263_qscales(MpegEncContext *s);
- int ff_mpeg4_decode_partitions(MpegEncContext *s);
- int ff_mpeg4_get_video_packet_prefix_length(MpegEncContext *s);
- int ff_h263_resync(MpegEncContext *s);
- int ff_h263_get_gob_height(MpegEncContext *s);
- void ff_mpeg4_init_direct_mv(MpegEncContext *s);
- int ff_mpeg4_set_direct_mv(MpegEncContext *s, int mx, int my);
- void ff_h263_encode_motion(MpegEncContext * s, int val, int f_code);
- /* rv10.c */
- void rv10_encode_picture_header(MpegEncContext *s, int picture_number);
- int rv_decode_dc(MpegEncContext *s, int n);
- void rv20_encode_picture_header(MpegEncContext *s, int picture_number);
- /* msmpeg4.c */
- void msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number);
- void msmpeg4_encode_ext_header(MpegEncContext * s);
- void msmpeg4_encode_mb(MpegEncContext * s,
- DCTELEM block[6][64],
- int motion_x, int motion_y);
- int msmpeg4_decode_picture_header(MpegEncContext * s);
- int msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
- int ff_msmpeg4_decode_init(MpegEncContext *s);
- void ff_msmpeg4_encode_init(MpegEncContext *s);
- int ff_wmv2_decode_picture_header(MpegEncContext * s);
- int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s);
- void ff_wmv2_add_mb(MpegEncContext *s, DCTELEM block[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr);
- void ff_mspel_motion(MpegEncContext *s,
- uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
- uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
- int motion_x, int motion_y, int h);
- int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number);
- void ff_wmv2_encode_mb(MpegEncContext * s,
- DCTELEM block[6][64],
- int motion_x, int motion_y);
- #endif /* FFMPEG_MPEGVIDEO_H */
