944 lines
40 KiB
C
944 lines
40 KiB
C
/*
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* Generic DCT based hybrid video encoder
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* Copyright (c) 2000, 2001, 2002 Fabrice Bellard
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* Copyright (c) 2002-2004 Michael Niedermayer
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*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* mpegvideo header.
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*/
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#ifndef AVCODEC_MPEGVIDEO_H
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#define AVCODEC_MPEGVIDEO_H
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#include "avcodec.h"
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#include "dsputil.h"
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#include "error_resilience.h"
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#include "get_bits.h"
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#include "put_bits.h"
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#include "ratecontrol.h"
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#include "parser.h"
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#include "mpeg12data.h"
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#include "rl.h"
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#include "thread.h"
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#include "videodsp.h"
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#include "libavutil/opt.h"
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#define FRAME_SKIPPED 100 ///< return value for header parsers if frame is not coded
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enum OutputFormat {
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FMT_MPEG1,
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FMT_H261,
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FMT_H263,
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FMT_MJPEG,
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};
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#define MPEG_BUF_SIZE (16 * 1024)
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#define QMAT_SHIFT_MMX 16
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#define QMAT_SHIFT 22
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#define MAX_FCODE 7
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#define MAX_MV 2048
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#define MAX_THREADS 16
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#define MAX_PICTURE_COUNT 32
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#define ME_MAP_SIZE 64
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#define ME_MAP_SHIFT 3
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#define ME_MAP_MV_BITS 11
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#define MAX_MB_BYTES (30*16*16*3/8 + 120)
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#define INPLACE_OFFSET 16
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/* Start codes. */
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#define SEQ_END_CODE 0x000001b7
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#define SEQ_START_CODE 0x000001b3
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#define GOP_START_CODE 0x000001b8
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#define PICTURE_START_CODE 0x00000100
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#define SLICE_MIN_START_CODE 0x00000101
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#define SLICE_MAX_START_CODE 0x000001af
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#define EXT_START_CODE 0x000001b5
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#define USER_START_CODE 0x000001b2
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/**
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* Value of Picture.reference when Picture is not a reference picture, but
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* is held for delayed output.
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*/
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#define DELAYED_PIC_REF 4
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struct MpegEncContext;
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/**
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* Picture.
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*/
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typedef struct Picture{
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struct AVFrame f;
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ThreadFrame tf;
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AVBufferRef *qscale_table_buf;
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int8_t *qscale_table;
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AVBufferRef *motion_val_buf[2];
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int16_t (*motion_val[2])[2];
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AVBufferRef *mb_type_buf;
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uint32_t *mb_type;
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AVBufferRef *mbskip_table_buf;
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uint8_t *mbskip_table;
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AVBufferRef *ref_index_buf[2];
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int8_t *ref_index[2];
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AVBufferRef *mb_var_buf;
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uint16_t *mb_var; ///< Table for MB variances
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AVBufferRef *mc_mb_var_buf;
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uint16_t *mc_mb_var; ///< Table for motion compensated MB variances
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AVBufferRef *mb_mean_buf;
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uint8_t *mb_mean; ///< Table for MB luminance
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AVBufferRef *hwaccel_priv_buf;
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/**
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* hardware accelerator private data
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*/
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void *hwaccel_picture_private;
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#define MB_TYPE_INTRA MB_TYPE_INTRA4x4 //default mb_type if there is just one type
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#define IS_INTRA4x4(a) ((a)&MB_TYPE_INTRA4x4)
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#define IS_INTRA16x16(a) ((a)&MB_TYPE_INTRA16x16)
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#define IS_PCM(a) ((a)&MB_TYPE_INTRA_PCM)
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#define IS_INTRA(a) ((a)&7)
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#define IS_INTER(a) ((a)&(MB_TYPE_16x16|MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8))
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#define IS_SKIP(a) ((a)&MB_TYPE_SKIP)
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#define IS_INTRA_PCM(a) ((a)&MB_TYPE_INTRA_PCM)
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#define IS_INTERLACED(a) ((a)&MB_TYPE_INTERLACED)
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#define IS_DIRECT(a) ((a)&MB_TYPE_DIRECT2)
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#define IS_GMC(a) ((a)&MB_TYPE_GMC)
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#define IS_16X16(a) ((a)&MB_TYPE_16x16)
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#define IS_16X8(a) ((a)&MB_TYPE_16x8)
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#define IS_8X16(a) ((a)&MB_TYPE_8x16)
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#define IS_8X8(a) ((a)&MB_TYPE_8x8)
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#define IS_SUB_8X8(a) ((a)&MB_TYPE_16x16) //note reused
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#define IS_SUB_8X4(a) ((a)&MB_TYPE_16x8) //note reused
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#define IS_SUB_4X8(a) ((a)&MB_TYPE_8x16) //note reused
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#define IS_SUB_4X4(a) ((a)&MB_TYPE_8x8) //note reused
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#define IS_ACPRED(a) ((a)&MB_TYPE_ACPRED)
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#define IS_QUANT(a) ((a)&MB_TYPE_QUANT)
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#define IS_DIR(a, part, list) ((a) & (MB_TYPE_P0L0<<((part)+2*(list))))
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#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
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#define HAS_CBP(a) ((a)&MB_TYPE_CBP)
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int field_poc[2]; ///< h264 top/bottom POC
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int poc; ///< h264 frame POC
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int frame_num; ///< h264 frame_num (raw frame_num from slice header)
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int mmco_reset; ///< h264 MMCO_RESET set this 1. Reordering code must not mix pictures before and after MMCO_RESET.
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int pic_id; /**< h264 pic_num (short -> no wrap version of pic_num,
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pic_num & max_pic_num; long -> long_pic_num) */
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int long_ref; ///< 1->long term reference 0->short term reference
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int ref_poc[2][2][32]; ///< h264 POCs of the frames used as reference (FIXME need per slice)
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int ref_count[2][2]; ///< number of entries in ref_poc (FIXME need per slice)
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int mbaff; ///< h264 1 -> MBAFF frame 0-> not MBAFF
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int field_picture; ///< whether or not the picture was encoded in separate fields
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int mb_var_sum; ///< sum of MB variance for current frame
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int mc_mb_var_sum; ///< motion compensated MB variance for current frame
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int b_frame_score; /* */
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int needs_realloc; ///< Picture needs to be reallocated (eg due to a frame size change)
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int reference;
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int shared;
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} Picture;
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/**
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* Motion estimation context.
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*/
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typedef struct MotionEstContext{
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AVCodecContext *avctx;
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int skip; ///< set if ME is skipped for the current MB
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int co_located_mv[4][2]; ///< mv from last P-frame for direct mode ME
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int direct_basis_mv[4][2];
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uint8_t *scratchpad; ///< data area for the ME algo, so that the ME does not need to malloc/free
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uint8_t *best_mb;
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uint8_t *temp_mb[2];
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uint8_t *temp;
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int best_bits;
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uint32_t *map; ///< map to avoid duplicate evaluations
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uint32_t *score_map; ///< map to store the scores
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unsigned map_generation;
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int pre_penalty_factor;
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int penalty_factor; /**< an estimate of the bits required to
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code a given mv value, e.g. (1,0) takes
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more bits than (0,0). We have to
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estimate whether any reduction in
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residual is worth the extra bits. */
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int sub_penalty_factor;
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int mb_penalty_factor;
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int flags;
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int sub_flags;
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int mb_flags;
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int pre_pass; ///< = 1 for the pre pass
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int dia_size;
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int xmin;
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int xmax;
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int ymin;
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int ymax;
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int pred_x;
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int pred_y;
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uint8_t *src[4][4];
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uint8_t *ref[4][4];
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int stride;
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int uvstride;
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/* temp variables for picture complexity calculation */
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int mc_mb_var_sum_temp;
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int mb_var_sum_temp;
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int scene_change_score;
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/* cmp, chroma_cmp;*/
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op_pixels_func (*hpel_put)[4];
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op_pixels_func (*hpel_avg)[4];
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qpel_mc_func (*qpel_put)[16];
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qpel_mc_func (*qpel_avg)[16];
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uint8_t (*mv_penalty)[MAX_MV*2+1]; ///< amount of bits needed to encode a MV
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uint8_t *current_mv_penalty;
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int (*sub_motion_search)(struct MpegEncContext * s,
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int *mx_ptr, int *my_ptr, int dmin,
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int src_index, int ref_index,
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int size, int h);
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}MotionEstContext;
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/**
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* MpegEncContext.
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*/
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typedef struct MpegEncContext {
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AVClass *class;
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struct AVCodecContext *avctx;
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/* the following parameters must be initialized before encoding */
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int width, height;///< picture size. must be a multiple of 16
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int gop_size;
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int intra_only; ///< if true, only intra pictures are generated
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int bit_rate; ///< wanted bit rate
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enum OutputFormat out_format; ///< output format
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int h263_pred; ///< use mpeg4/h263 ac/dc predictions
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int pb_frame; ///< PB frame mode (0 = none, 1 = base, 2 = improved)
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/* the following codec id fields are deprecated in favor of codec_id */
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int h263_plus; ///< h263 plus headers
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int h263_flv; ///< use flv h263 header
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enum AVCodecID codec_id; /* see AV_CODEC_ID_xxx */
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int fixed_qscale; ///< fixed qscale if non zero
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int encoding; ///< true if we are encoding (vs decoding)
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int flags; ///< AVCodecContext.flags (HQ, MV4, ...)
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int flags2; ///< AVCodecContext.flags2
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int max_b_frames; ///< max number of b-frames for encoding
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int luma_elim_threshold;
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int chroma_elim_threshold;
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int strict_std_compliance; ///< strictly follow the std (MPEG4, ...)
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int workaround_bugs; ///< workaround bugs in encoders which cannot be detected automatically
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int codec_tag; ///< internal codec_tag upper case converted from avctx codec_tag
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int stream_codec_tag; ///< internal stream_codec_tag upper case converted from avctx stream_codec_tag
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/* the following fields are managed internally by the encoder */
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/* sequence parameters */
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int context_initialized;
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int input_picture_number; ///< used to set pic->display_picture_number, should not be used for/by anything else
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int coded_picture_number; ///< used to set pic->coded_picture_number, should not be used for/by anything else
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int picture_number; //FIXME remove, unclear definition
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int picture_in_gop_number; ///< 0-> first pic in gop, ...
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int mb_width, mb_height; ///< number of MBs horizontally & vertically
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int mb_stride; ///< mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11
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int b8_stride; ///< 2*mb_width+1 used for some 8x8 block arrays to allow simple addressing
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int b4_stride; ///< 4*mb_width+1 used for some 4x4 block arrays to allow simple addressing
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int h_edge_pos, v_edge_pos;///< horizontal / vertical position of the right/bottom edge (pixel replication)
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int mb_num; ///< number of MBs of a picture
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int linesize; ///< line size, in bytes, may be different from width
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int uvlinesize; ///< line size, for chroma in bytes, may be different from width
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Picture *picture; ///< main picture buffer
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Picture **input_picture; ///< next pictures on display order for encoding
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Picture **reordered_input_picture; ///< pointer to the next pictures in codedorder for encoding
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int y_dc_scale, c_dc_scale;
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int ac_pred;
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int block_last_index[12]; ///< last non zero coefficient in block
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int h263_aic; ///< Advanded INTRA Coding (AIC)
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/* scantables */
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ScanTable inter_scantable; ///< if inter == intra then intra should be used to reduce tha cache usage
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ScanTable intra_scantable;
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ScanTable intra_h_scantable;
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ScanTable intra_v_scantable;
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/* WARNING: changes above this line require updates to hardcoded
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* offsets used in asm. */
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int64_t user_specified_pts;///< last non zero pts from AVFrame which was passed into avcodec_encode_video()
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/**
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* pts difference between the first and second input frame, used for
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* calculating dts of the first frame when there's a delay */
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int64_t dts_delta;
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/**
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* reordered pts to be used as dts for the next output frame when there's
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* a delay */
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int64_t reordered_pts;
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/** bit output */
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PutBitContext pb;
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int start_mb_y; ///< start mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
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int end_mb_y; ///< end mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
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struct MpegEncContext *thread_context[MAX_THREADS];
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int slice_context_count; ///< number of used thread_contexts
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/**
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* copy of the previous picture structure.
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* note, linesize & data, might not match the previous picture (for field pictures)
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*/
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Picture last_picture;
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/**
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* copy of the next picture structure.
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* note, linesize & data, might not match the next picture (for field pictures)
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*/
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Picture next_picture;
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/**
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* copy of the source picture structure for encoding.
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* note, linesize & data, might not match the source picture (for field pictures)
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*/
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Picture new_picture;
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/**
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* copy of the current picture structure.
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* note, linesize & data, might not match the current picture (for field pictures)
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*/
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Picture current_picture; ///< buffer to store the decompressed current picture
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Picture *last_picture_ptr; ///< pointer to the previous picture.
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Picture *next_picture_ptr; ///< pointer to the next picture (for bidir pred)
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Picture *current_picture_ptr; ///< pointer to the current picture
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int last_dc[3]; ///< last DC values for MPEG1
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int16_t *dc_val_base;
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int16_t *dc_val[3]; ///< used for mpeg4 DC prediction, all 3 arrays must be continuous
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const uint8_t *y_dc_scale_table; ///< qscale -> y_dc_scale table
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const uint8_t *c_dc_scale_table; ///< qscale -> c_dc_scale table
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const uint8_t *chroma_qscale_table; ///< qscale -> chroma_qscale (h263)
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uint8_t *coded_block_base;
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uint8_t *coded_block; ///< used for coded block pattern prediction (msmpeg4v3, wmv1)
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int16_t (*ac_val_base)[16];
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int16_t (*ac_val[3])[16]; ///< used for for mpeg4 AC prediction, all 3 arrays must be continuous
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int mb_skipped; ///< MUST BE SET only during DECODING
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uint8_t *mbskip_table; /**< used to avoid copy if macroblock skipped (for black regions for example)
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and used for b-frame encoding & decoding (contains skip table of next P Frame) */
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uint8_t *mbintra_table; ///< used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
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uint8_t *cbp_table; ///< used to store cbp, ac_pred for partitioned decoding
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uint8_t *pred_dir_table; ///< used to store pred_dir for partitioned decoding
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uint8_t *edge_emu_buffer; ///< temporary buffer for if MVs point to out-of-frame data
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uint8_t *rd_scratchpad; ///< scratchpad for rate distortion mb decision
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uint8_t *obmc_scratchpad;
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uint8_t *b_scratchpad; ///< scratchpad used for writing into write only buffers
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int qscale; ///< QP
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int chroma_qscale; ///< chroma QP
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unsigned int lambda; ///< lagrange multipler used in rate distortion
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unsigned int lambda2; ///< (lambda*lambda) >> FF_LAMBDA_SHIFT
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int *lambda_table;
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int adaptive_quant; ///< use adaptive quantization
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int dquant; ///< qscale difference to prev qscale
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int pict_type; ///< AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
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int last_pict_type; //FIXME removes
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int last_non_b_pict_type; ///< used for mpeg4 gmc b-frames & ratecontrol
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int droppable;
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int frame_rate_index;
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int last_lambda_for[5]; ///< last lambda for a specific pict type
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int skipdct; ///< skip dct and code zero residual
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/* motion compensation */
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int unrestricted_mv; ///< mv can point outside of the coded picture
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int h263_long_vectors; ///< use horrible h263v1 long vector mode
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DSPContext dsp; ///< pointers for accelerated dsp functions
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VideoDSPContext vdsp;
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int f_code; ///< forward MV resolution
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int b_code; ///< backward MV resolution for B Frames (mpeg4)
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int16_t (*p_mv_table_base)[2];
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int16_t (*b_forw_mv_table_base)[2];
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int16_t (*b_back_mv_table_base)[2];
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int16_t (*b_bidir_forw_mv_table_base)[2];
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int16_t (*b_bidir_back_mv_table_base)[2];
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int16_t (*b_direct_mv_table_base)[2];
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int16_t (*p_field_mv_table_base[2][2])[2];
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int16_t (*b_field_mv_table_base[2][2][2])[2];
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int16_t (*p_mv_table)[2]; ///< MV table (1MV per MB) p-frame encoding
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int16_t (*b_forw_mv_table)[2]; ///< MV table (1MV per MB) forward mode b-frame encoding
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int16_t (*b_back_mv_table)[2]; ///< MV table (1MV per MB) backward mode b-frame encoding
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int16_t (*b_bidir_forw_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
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int16_t (*b_bidir_back_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
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int16_t (*b_direct_mv_table)[2]; ///< MV table (1MV per MB) direct mode b-frame encoding
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int16_t (*p_field_mv_table[2][2])[2]; ///< MV table (2MV per MB) interlaced p-frame encoding
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int16_t (*b_field_mv_table[2][2][2])[2];///< MV table (4MV per MB) interlaced b-frame encoding
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uint8_t (*p_field_select_table[2]);
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uint8_t (*b_field_select_table[2][2]);
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int me_method; ///< ME algorithm
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int mv_dir;
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#define MV_DIR_FORWARD 1
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#define MV_DIR_BACKWARD 2
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#define MV_DIRECT 4 ///< bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4)
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int mv_type;
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#define MV_TYPE_16X16 0 ///< 1 vector for the whole mb
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#define MV_TYPE_8X8 1 ///< 4 vectors (h263, mpeg4 4MV)
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#define MV_TYPE_16X8 2 ///< 2 vectors, one per 16x8 block
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#define MV_TYPE_FIELD 3 ///< 2 vectors, one per field
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#define MV_TYPE_DMV 4 ///< 2 vectors, special mpeg2 Dual Prime Vectors
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/**motion vectors for a macroblock
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first coordinate : 0 = forward 1 = backward
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second " : depend on type
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third " : 0 = x, 1 = y
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*/
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int mv[2][4][2];
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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 */
|
|
|
|
/* 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;
|
|
#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];
|
|
|
|
/* 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 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 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 err_recognition;
|
|
|
|
ParseContext parse_context;
|
|
|
|
/* H.263 specific */
|
|
int gob_index;
|
|
int obmc; ///< overlapped block motion compensation
|
|
int showed_packed_warning; ///< flag for having shown the warning about divxs invalid b frames
|
|
int mb_info; ///< interval for outputting info about mb offsets as side data
|
|
int prev_mb_info, last_mb_info;
|
|
uint8_t *mb_info_ptr;
|
|
int mb_info_size;
|
|
|
|
/* H.263+ specific */
|
|
int umvplus; ///< == H263+ && unrestricted_mv
|
|
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;
|
|
uint16_t sprite_traj[4][2]; ///< sprite trajectory 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
|
|
int cplx_estimation_trash_i;
|
|
int cplx_estimation_trash_p;
|
|
int cplx_estimation_trash_b;
|
|
|
|
/* 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];
|
|
int orig_width, orig_height;
|
|
|
|
/* 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
|
|
|
|
/* MPEG-2-specific - I wished not to have 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
|
|
int drop_frame_timecode; ///< timecode is in drop frame format.
|
|
int scan_offset; ///< reserve space for SVCD scan offset user data.
|
|
|
|
/* RTP specific */
|
|
int rtp_mode;
|
|
|
|
uint8_t *ptr_lastgob;
|
|
int swap_uv; //vcr2 codec is an MPEG-2 variant with U and V swapped
|
|
int16_t (*pblocks[12])[64];
|
|
|
|
int16_t (*block)[64]; ///< points to one of the following blocks
|
|
int16_t (*blocks)[8][64]; // for HQ mode we need to keep the best block
|
|
int (*decode_mb)(struct MpegEncContext *s, int16_t 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,
|
|
int16_t *block/*align 16*/, int n, int qscale);
|
|
void (*dct_unquantize_mpeg1_inter)(struct MpegEncContext *s,
|
|
int16_t *block/*align 16*/, int n, int qscale);
|
|
void (*dct_unquantize_mpeg2_intra)(struct MpegEncContext *s,
|
|
int16_t *block/*align 16*/, int n, int qscale);
|
|
void (*dct_unquantize_mpeg2_inter)(struct MpegEncContext *s,
|
|
int16_t *block/*align 16*/, int n, int qscale);
|
|
void (*dct_unquantize_h263_intra)(struct MpegEncContext *s,
|
|
int16_t *block/*align 16*/, int n, int qscale);
|
|
void (*dct_unquantize_h263_inter)(struct MpegEncContext *s,
|
|
int16_t *block/*align 16*/, int n, int qscale);
|
|
void (*dct_unquantize_h261_intra)(struct MpegEncContext *s,
|
|
int16_t *block/*align 16*/, int n, int qscale);
|
|
void (*dct_unquantize_h261_inter)(struct MpegEncContext *s,
|
|
int16_t *block/*align 16*/, int n, int qscale);
|
|
void (*dct_unquantize_intra)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
|
|
int16_t *block/*align 16*/, int n, int qscale);
|
|
void (*dct_unquantize_inter)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
|
|
int16_t *block/*align 16*/, int n, int qscale);
|
|
int (*dct_quantize)(struct MpegEncContext *s, int16_t *block/*align 16*/, int n, int qscale, int *overflow);
|
|
int (*fast_dct_quantize)(struct MpegEncContext *s, int16_t *block/*align 16*/, int n, int qscale, int *overflow);
|
|
void (*denoise_dct)(struct MpegEncContext *s, int16_t *block);
|
|
|
|
int mpv_flags; ///< flags set by private options
|
|
int quantizer_noise_shaping;
|
|
|
|
/* temp buffers for rate control */
|
|
float *cplx_tab, *bits_tab;
|
|
|
|
/* flag to indicate a reinitialization is required, e.g. after
|
|
* a frame size change */
|
|
int context_reinit;
|
|
|
|
ERContext er;
|
|
} MpegEncContext;
|
|
|
|
#define REBASE_PICTURE(pic, new_ctx, old_ctx) \
|
|
((pic && pic >= old_ctx->picture && \
|
|
pic < old_ctx->picture + MAX_PICTURE_COUNT) ? \
|
|
&new_ctx->picture[pic - old_ctx->picture] : NULL)
|
|
|
|
/* mpegvideo_enc common options */
|
|
#define FF_MPV_FLAG_SKIP_RD 0x0001
|
|
#define FF_MPV_FLAG_STRICT_GOP 0x0002
|
|
#define FF_MPV_FLAG_QP_RD 0x0004
|
|
#define FF_MPV_FLAG_CBP_RD 0x0008
|
|
|
|
#define FF_MPV_OFFSET(x) offsetof(MpegEncContext, x)
|
|
#define FF_MPV_OPT_FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
|
|
#define FF_MPV_COMMON_OPTS \
|
|
{ "mpv_flags", "Flags common for all mpegvideo-based encoders.", FF_MPV_OFFSET(mpv_flags), AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, "mpv_flags" },\
|
|
{ "skip_rd", "RD optimal MB level residual skipping", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_SKIP_RD }, 0, 0, FF_MPV_OPT_FLAGS, "mpv_flags" },\
|
|
{ "strict_gop", "Strictly enforce gop size", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_STRICT_GOP }, 0, 0, FF_MPV_OPT_FLAGS, "mpv_flags" },\
|
|
{ "qp_rd", "Use rate distortion optimization for qp selection", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_QP_RD }, 0, 0, FF_MPV_OPT_FLAGS, "mpv_flags" },\
|
|
{ "cbp_rd", "use rate distortion optimization for CBP", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_CBP_RD }, 0, 0, FF_MPV_OPT_FLAGS, "mpv_flags" },\
|
|
{ "luma_elim_threshold", "single coefficient elimination threshold for luminance (negative values also consider dc coefficient)",\
|
|
FF_MPV_OFFSET(luma_elim_threshold), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS },\
|
|
{ "chroma_elim_threshold", "single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)",\
|
|
FF_MPV_OFFSET(chroma_elim_threshold), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS },\
|
|
{ "quantizer_noise_shaping", NULL, FF_MPV_OFFSET(quantizer_noise_shaping), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FF_MPV_OPT_FLAGS },
|
|
|
|
extern const AVOption ff_mpv_generic_options[];
|
|
|
|
#define FF_MPV_GENERIC_CLASS(name) \
|
|
static const AVClass name ## _class = {\
|
|
.class_name = #name " encoder",\
|
|
.item_name = av_default_item_name,\
|
|
.option = ff_mpv_generic_options,\
|
|
.version = LIBAVUTIL_VERSION_INT,\
|
|
};
|
|
|
|
/**
|
|
* Set the given MpegEncContext to common defaults (same for encoding
|
|
* and decoding). The changed fields will not depend upon the prior
|
|
* state of the MpegEncContext.
|
|
*/
|
|
void ff_MPV_common_defaults(MpegEncContext *s);
|
|
|
|
void ff_MPV_decode_defaults(MpegEncContext *s);
|
|
int ff_MPV_common_init(MpegEncContext *s);
|
|
int ff_mpv_frame_size_alloc(MpegEncContext *s, int linesize);
|
|
int ff_MPV_common_frame_size_change(MpegEncContext *s);
|
|
void ff_MPV_common_end(MpegEncContext *s);
|
|
void ff_MPV_decode_mb(MpegEncContext *s, int16_t block[12][64]);
|
|
int ff_MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx);
|
|
void ff_MPV_frame_end(MpegEncContext *s);
|
|
int ff_MPV_encode_init(AVCodecContext *avctx);
|
|
int ff_MPV_encode_end(AVCodecContext *avctx);
|
|
int ff_MPV_encode_picture(AVCodecContext *avctx, AVPacket *pkt,
|
|
const AVFrame *frame, int *got_packet);
|
|
void ff_MPV_encode_init_x86(MpegEncContext *s);
|
|
void ff_MPV_common_init_x86(MpegEncContext *s);
|
|
void ff_MPV_common_init_axp(MpegEncContext *s);
|
|
void ff_MPV_common_init_arm(MpegEncContext *s);
|
|
void ff_MPV_common_init_altivec(MpegEncContext *s);
|
|
void ff_MPV_common_init_bfin(MpegEncContext *s);
|
|
void ff_clean_intra_table_entries(MpegEncContext *s);
|
|
void ff_draw_horiz_band(AVCodecContext *avctx, DSPContext *dsp, Picture *cur,
|
|
Picture *last, int y, int h, int picture_structure,
|
|
int first_field, int draw_edges, int low_delay,
|
|
int v_edge_pos, int h_edge_pos);
|
|
void ff_mpeg_draw_horiz_band(MpegEncContext *s, int y, int h);
|
|
void ff_mpeg_flush(AVCodecContext *avctx);
|
|
void ff_print_debug_info(MpegEncContext *s, Picture *p);
|
|
void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix);
|
|
void ff_release_unused_pictures(MpegEncContext *s, int remove_current);
|
|
int ff_find_unused_picture(MpegEncContext *s, int shared);
|
|
void ff_denoise_dct(MpegEncContext *s, int16_t *block);
|
|
int ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src);
|
|
int ff_MPV_lowest_referenced_row(MpegEncContext *s, int dir);
|
|
void ff_MPV_report_decode_progress(MpegEncContext *s);
|
|
int ff_mpeg_update_thread_context(AVCodecContext *dst, const AVCodecContext *src);
|
|
const uint8_t *avpriv_mpv_find_start_code(const uint8_t *p, const uint8_t *end, uint32_t *state);
|
|
void ff_set_qscale(MpegEncContext * s, int qscale);
|
|
|
|
void ff_mpeg_er_frame_start(MpegEncContext *s);
|
|
|
|
int ff_dct_common_init(MpegEncContext *s);
|
|
void ff_convert_matrix(DSPContext *dsp, int (*qmat)[64], uint16_t (*qmat16)[2][64],
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const uint16_t *quant_matrix, int bias, int qmin, int qmax, int intra);
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int ff_dct_quantize_c(MpegEncContext *s, int16_t *block, int n, int qscale, int *overflow);
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void ff_init_block_index(MpegEncContext *s);
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void ff_MPV_motion(MpegEncContext *s,
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uint8_t *dest_y, uint8_t *dest_cb,
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uint8_t *dest_cr, int dir,
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uint8_t **ref_picture,
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op_pixels_func (*pix_op)[4],
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qpel_mc_func (*qpix_op)[16]);
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/**
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* Allocate a Picture.
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* The pixels are allocated/set by calling get_buffer() if shared = 0.
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*/
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int ff_alloc_picture(MpegEncContext *s, Picture *pic, int shared);
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extern const enum AVPixelFormat ff_pixfmt_list_420[];
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/**
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* permute block according to permuatation.
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* @param last last non zero element in scantable order
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*/
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void ff_block_permute(int16_t *block, uint8_t *permutation, const uint8_t *scantable, int last);
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static inline void ff_update_block_index(MpegEncContext *s){
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const int block_size = 8;
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s->block_index[0]+=2;
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s->block_index[1]+=2;
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s->block_index[2]+=2;
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s->block_index[3]+=2;
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s->block_index[4]++;
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s->block_index[5]++;
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s->dest[0]+= 2*block_size;
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s->dest[1]+= block_size;
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s->dest[2]+= block_size;
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}
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|
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static inline int get_bits_diff(MpegEncContext *s){
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const int bits= put_bits_count(&s->pb);
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const int last= s->last_bits;
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s->last_bits = bits;
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return bits - last;
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}
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static inline int ff_h263_round_chroma(int x){
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static const uint8_t h263_chroma_roundtab[16] = {
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// 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
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0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1,
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};
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return h263_chroma_roundtab[x & 0xf] + (x >> 3);
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}
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|
|
|
/* motion_est.c */
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void ff_estimate_p_frame_motion(MpegEncContext * s,
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int mb_x, int mb_y);
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|
void ff_estimate_b_frame_motion(MpegEncContext * s,
|
|
int mb_x, int mb_y);
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|
int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type);
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|
void ff_fix_long_p_mvs(MpegEncContext * s);
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|
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];
|
|
extern const uint8_t * const ff_mpeg2_dc_scale_table[4];
|
|
|
|
void ff_mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
|
|
void ff_mpeg1_encode_mb(MpegEncContext *s,
|
|
int16_t 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, AVCodecParserContext *s);
|
|
|
|
extern const uint8_t ff_aic_dc_scale_table[32];
|
|
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,
|
|
int16_t 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);
|
|
|
|
|
|
/* rv10.c */
|
|
void ff_rv10_encode_picture_header(MpegEncContext *s, int picture_number);
|
|
int ff_rv_decode_dc(MpegEncContext *s, int n);
|
|
void ff_rv20_encode_picture_header(MpegEncContext *s, int picture_number);
|
|
|
|
|
|
/* msmpeg4.c */
|
|
void ff_msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number);
|
|
void ff_msmpeg4_encode_ext_header(MpegEncContext * s);
|
|
void ff_msmpeg4_encode_mb(MpegEncContext * s,
|
|
int16_t block[6][64],
|
|
int motion_x, int motion_y);
|
|
int ff_msmpeg4_decode_picture_header(MpegEncContext * s);
|
|
int ff_msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
|
|
int ff_msmpeg4_decode_init(AVCodecContext *avctx);
|
|
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, int16_t 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,
|
|
int16_t block[6][64],
|
|
int motion_x, int motion_y);
|
|
|
|
int ff_mpeg_ref_picture(MpegEncContext *s, Picture *dst, Picture *src);
|
|
void ff_mpeg_unref_picture(MpegEncContext *s, Picture *picture);
|
|
|
|
#endif /* AVCODEC_MPEGVIDEO_H */
|