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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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* This file is part of Libav.
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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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* 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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* 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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#ifndef AVCODEC_MPEGVIDEO_H
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#define AVCODEC_MPEGVIDEO_H
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#include "ratecontrol.h"
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#include "mpeg12data.h"
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#define FRAME_SKIPPED 100 ///< return value for header parsers if frame is not coded
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#define MPEG_BUF_SIZE (16 * 1024)
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#define QMAT_SHIFT_MMX 16
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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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#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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struct MpegEncContext;
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typedef struct Picture{
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* halfpel luma planes.
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uint8_t *interpolated[3];
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int16_t (*motion_val_base[2])[2];
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uint32_t *mb_type_base;
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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][16]; ///< 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 seperate 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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uint16_t *mb_var; ///< Table for MB variances
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uint16_t *mc_mb_var; ///< Table for motion compensated MB variances
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uint8_t *mb_mean; ///< Table for MB luminance
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int32_t *mb_cmp_score; ///< Table for MB cmp scores, for mb decision FIXME remove
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int b_frame_score; /* */
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struct MpegEncContext *owner2; ///< pointer to the MpegEncContext that allocated this picture
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* Motion estimation context.
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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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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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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 pre_pass; ///< = 1 for the pre pass
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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 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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typedef struct MpegEncContext {
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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 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 CodecID codec_id; /* see 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 b_frames_since_non_b; ///< used for encoding, relative to not yet reordered input
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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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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 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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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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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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* 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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Picture last_picture;
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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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Picture next_picture;
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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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* 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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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 picture_count; ///< number of allocated pictures (MAX_PICTURE_COUNT * avctx->thread_count)
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int picture_range_start, picture_range_end; ///< the part of picture that this context can allocate in
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uint8_t *visualization_buffer[3]; //< temporary buffer vor MV visualization
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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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int16_t dc_cache[4*5];
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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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uint8_t *prev_pict_types; ///< previous picture types in bitstream order, used for mb skip
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#define PREV_PICT_TYPES_BUFFER_SIZE 256
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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 *allocated_edge_emu_buffer;
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uint8_t *edge_emu_buffer; ///< points into the middle of allocated_edge_emu_buffer
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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 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 adaptive_quant; ///< use adaptive quantization
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int dquant; ///< qscale difference to prev qscale
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int closed_gop; ///< MPEG1/2 GOP is closed
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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 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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int decode; ///< if 0 then decoding will be skipped (for encoding b frames for example)
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DSPContext dsp; ///< pointers for accelerated dsp functions
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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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#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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#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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int field_select[2][2];
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int last_mv[2][2][2]; ///< last MV, used for MV prediction in MPEG1 & B-frame MPEG4
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uint8_t *fcode_tab; ///< smallest fcode needed for each MV
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int16_t direct_scale_mv[2][64]; ///< precomputed to avoid divisions in ff_mpeg4_set_direct_mv
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int no_rounding; /**< apply no rounding to motion compensation (MPEG4, msmpeg4, ...)
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for b-frames rounding mode is always 0 */
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/* macroblock layer */
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uint16_t *mb_type; ///< Table for candidate MB types for encoding
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#define CANDIDATE_MB_TYPE_INTRA 0x01
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#define CANDIDATE_MB_TYPE_INTER 0x02
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#define CANDIDATE_MB_TYPE_INTER4V 0x04
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#define CANDIDATE_MB_TYPE_SKIPPED 0x08
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//#define MB_TYPE_GMC 0x10
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#define CANDIDATE_MB_TYPE_DIRECT 0x10
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#define CANDIDATE_MB_TYPE_FORWARD 0x20
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#define CANDIDATE_MB_TYPE_BACKWARD 0x40
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#define CANDIDATE_MB_TYPE_BIDIR 0x80
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#define CANDIDATE_MB_TYPE_INTER_I 0x100
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#define CANDIDATE_MB_TYPE_FORWARD_I 0x200
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#define CANDIDATE_MB_TYPE_BACKWARD_I 0x400
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#define CANDIDATE_MB_TYPE_BIDIR_I 0x800
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#define CANDIDATE_MB_TYPE_DIRECT0 0x1000
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int block_index[6]; ///< index to current MB in block based arrays with edges
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int *mb_index2xy; ///< mb_index -> mb_x + mb_y*mb_stride
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/** matrix transmitted in the bitstream */
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uint16_t intra_matrix[64];
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uint16_t chroma_intra_matrix[64];
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uint16_t inter_matrix[64];
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uint16_t chroma_inter_matrix[64];
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#define QUANT_BIAS_SHIFT 8
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int intra_quant_bias; ///< bias for the quantizer
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int inter_quant_bias; ///< bias for the quantizer
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int min_qcoeff; ///< minimum encodable coefficient
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int max_qcoeff; ///< maximum encodable coefficient
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int ac_esc_length; ///< num of bits needed to encode the longest esc
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uint8_t *intra_ac_vlc_length;
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uint8_t *intra_ac_vlc_last_length;
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uint8_t *inter_ac_vlc_length;
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uint8_t *inter_ac_vlc_last_length;
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uint8_t *luma_dc_vlc_length;
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uint8_t *chroma_dc_vlc_length;
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#define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level))
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/** precomputed matrix (combine qscale and DCT renorm) */
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int (*q_intra_matrix)[64];
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int (*q_inter_matrix)[64];
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/** identical to the above but for MMX & these are not permutated, second 64 entries are bias*/
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uint16_t (*q_intra_matrix16)[2][64];
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uint16_t (*q_inter_matrix16)[2][64];
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/* noise reduction */
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int (*dct_error_sum)[64];
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uint16_t (*dct_offset)[64];
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void *opaque; ///< private data for the user
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/* bit rate control */
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int frame_bits; ///< bits used for the current frame
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int next_lambda; ///< next lambda used for retrying to encode a frame
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RateControlContext rc_context; ///< contains stuff only accessed in ratecontrol.c
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/* statistics, used for 2-pass encoding */
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int misc_bits; ///< cbp, mb_type
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int last_bits; ///< temp var used for calculating the above vars
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/* error concealment / resync */
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int error_count, error_occurred;
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uint8_t *error_status_table; ///< table of the error status of each MB
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#define VP_START 1 ///< current MB is the first after a resync marker
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int resync_mb_x; ///< x position of last resync marker
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int resync_mb_y; ///< y position of last resync marker
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GetBitContext last_resync_gb; ///< used to search for the next resync marker
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int mb_num_left; ///< number of MBs left in this video packet (for partitioned Slices only)
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int next_p_frame_damaged; ///< set if the next p frame is damaged, to avoid showing trashed b frames
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int error_recognition;
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ParseContext parse_context;
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int obmc; ///< overlapped block motion compensation
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int showed_packed_warning; ///< flag for having shown the warning about divxs invalid b frames
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/* H.263+ specific */
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int umvplus; ///< == H263+ && unrestricted_mv
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int h263_aic_dir; ///< AIC direction: 0 = left, 1 = top
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int h263_slice_structured;
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int alt_inter_vlc; ///< alternative inter vlc
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int time_increment_bits; ///< number of bits to represent the fractional part of time
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int time_base; ///< time in seconds of last I,P,S Frame
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int64_t time; ///< time of current frame
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int64_t last_non_b_time;
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uint16_t pp_time; ///< time distance between the last 2 p,s,i frames
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uint16_t pb_time; ///< time distance between the last b and p,s,i frame
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uint16_t pp_field_time;
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uint16_t pb_field_time; ///< like above, just for interlaced
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int vol_sprite_usage;
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int sprite_brightness_change;
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int num_sprite_warping_points;
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int real_sprite_warping_points;
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uint16_t sprite_traj[4][2]; ///< sprite trajectory points
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int sprite_offset[2][2]; ///< sprite offset[isChroma][isMVY]
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int sprite_delta[2][2]; ///< sprite_delta [isY][isMVY]
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int sprite_shift[2]; ///< sprite shift [isChroma]
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int quarter_sample; ///< 1->qpel, 0->half pel ME/MC
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int enhancement_type;
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int aspect_ratio_info; //FIXME remove
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int sprite_warping_accuracy;
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int low_latency_sprite;
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int data_partitioning; ///< data partitioning flag from header
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int partitioned_frame; ///< is current frame partitioned
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int rvlc; ///< reversible vlc
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int resync_marker; ///< could this stream contain resync markers
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int low_delay; ///< no reordering needed / has no b-frames
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int vol_control_parameters; ///< does the stream contain the low_delay flag, used to workaround buggy encoders
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int intra_dc_threshold; ///< QP above whch the ac VLC should be used for intra dc
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int use_intra_dc_vlc;
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PutBitContext tex_pb; ///< used for data partitioned VOPs
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PutBitContext pb2; ///< used for data partitioned VOPs
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int t_frame; ///< time distance of first I -> B, used for interlaced b frames
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int padding_bug_score; ///< used to detect the VERY common padding bug in MPEG4
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int cplx_estimation_trash_i;
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int cplx_estimation_trash_p;
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int cplx_estimation_trash_b;
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/* divx specific, used to workaround (many) bugs in divx5 */
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uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
568
int bitstream_buffer_size;
569
unsigned int allocated_bitstream_buffer_size;
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/* lavc specific stuff, used to workaround bugs in libavcodec */
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int rv10_version; ///< RV10 version: 0 or 3
578
int rv10_first_dc_coded[3];
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int orig_width, orig_height;
582
struct MJpegContext *mjpeg_ctx;
583
int mjpeg_vsample[3]; ///< vertical sampling factors, default = {2, 1, 1}
584
int mjpeg_hsample[3]; ///< horizontal sampling factors, default = {2, 1, 1}
586
/* MSMPEG4 specific */
589
int rl_chroma_table_index;
591
int use_skip_mb_code;
592
int slice_height; ///< in macroblocks
593
int first_slice_line; ///< used in mpeg4 too to handle resync markers
594
int flipflop_rounding;
595
int msmpeg4_version; ///< 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8
597
int esc3_level_length;
599
/** [mb_intra][isChroma][level][run][last] */
600
int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2];
601
int inter_intra_pred;
604
/* decompression specific */
608
int gop_picture_number; ///< index of the first picture of a GOP based on fake_pic_num & mpeg1 specific
609
int last_mv_dir; ///< last mv_dir, used for b frame encoding
610
int broken_link; ///< no_output_of_prior_pics_flag
611
uint8_t *vbv_delay_ptr; ///< pointer to vbv_delay in the bitstream
613
/* MPEG-2-specific - I wished not to have to support this mess. */
614
int progressive_sequence;
615
int mpeg_f_code[2][2];
616
int picture_structure;
618
#define PICT_TOP_FIELD 1
619
#define PICT_BOTTOM_FIELD 2
622
int intra_dc_precision;
623
int frame_pred_frame_dct;
625
int concealment_motion_vectors;
627
int intra_vlc_format;
629
int repeat_first_field;
635
int chroma_x_shift;//depend on pix_format, that depend on chroma_format
638
int progressive_frame;
642
int first_field; ///< is 1 for the first field of a field picture 0 otherwise
647
uint8_t *ptr_lastgob;
648
int swap_uv; //vcr2 codec is an MPEG-2 variant with U and V swapped
649
DCTELEM (*pblocks[12])[64];
651
DCTELEM (*block)[64]; ///< points to one of the following blocks
652
DCTELEM (*blocks)[8][64]; // for HQ mode we need to keep the best block
653
int (*decode_mb)(struct MpegEncContext *s, DCTELEM block[6][64]); // used by some codecs to avoid a switch()
655
#define SLICE_ERROR -1
656
#define SLICE_END -2 ///<end marker found
657
#define SLICE_NOEND -3 ///<no end marker or error found but mb count exceeded
659
void (*dct_unquantize_mpeg1_intra)(struct MpegEncContext *s,
660
DCTELEM *block/*align 16*/, int n, int qscale);
661
void (*dct_unquantize_mpeg1_inter)(struct MpegEncContext *s,
662
DCTELEM *block/*align 16*/, int n, int qscale);
663
void (*dct_unquantize_mpeg2_intra)(struct MpegEncContext *s,
664
DCTELEM *block/*align 16*/, int n, int qscale);
665
void (*dct_unquantize_mpeg2_inter)(struct MpegEncContext *s,
666
DCTELEM *block/*align 16*/, int n, int qscale);
667
void (*dct_unquantize_h263_intra)(struct MpegEncContext *s,
668
DCTELEM *block/*align 16*/, int n, int qscale);
669
void (*dct_unquantize_h263_inter)(struct MpegEncContext *s,
670
DCTELEM *block/*align 16*/, int n, int qscale);
671
void (*dct_unquantize_h261_intra)(struct MpegEncContext *s,
672
DCTELEM *block/*align 16*/, int n, int qscale);
673
void (*dct_unquantize_h261_inter)(struct MpegEncContext *s,
674
DCTELEM *block/*align 16*/, int n, int qscale);
675
void (*dct_unquantize_intra)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
676
DCTELEM *block/*align 16*/, int n, int qscale);
677
void (*dct_unquantize_inter)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
678
DCTELEM *block/*align 16*/, int n, int qscale);
679
int (*dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
680
int (*fast_dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
681
void (*denoise_dct)(struct MpegEncContext *s, DCTELEM *block);
684
#define REBASE_PICTURE(pic, new_ctx, old_ctx) (pic ? \
685
(pic >= old_ctx->picture && pic < old_ctx->picture+old_ctx->picture_count ?\
686
&new_ctx->picture[pic - old_ctx->picture] : pic - (Picture*)old_ctx + (Picture*)new_ctx)\
689
void MPV_decode_defaults(MpegEncContext *s);
690
int MPV_common_init(MpegEncContext *s);
691
void MPV_common_end(MpegEncContext *s);
692
void MPV_decode_mb(MpegEncContext *s, DCTELEM block[12][64]);
693
int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx);
694
void MPV_frame_end(MpegEncContext *s);
695
int MPV_encode_init(AVCodecContext *avctx);
696
int MPV_encode_end(AVCodecContext *avctx);
697
int MPV_encode_picture(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data);
698
void MPV_common_init_mmx(MpegEncContext *s);
699
void MPV_common_init_axp(MpegEncContext *s);
700
void MPV_common_init_mlib(MpegEncContext *s);
701
void MPV_common_init_mmi(MpegEncContext *s);
702
void MPV_common_init_arm(MpegEncContext *s);
703
void MPV_common_init_altivec(MpegEncContext *s);
704
void MPV_common_init_bfin(MpegEncContext *s);
705
void ff_clean_intra_table_entries(MpegEncContext *s);
706
void ff_draw_horiz_band(MpegEncContext *s, int y, int h);
707
void ff_mpeg_flush(AVCodecContext *avctx);
708
void ff_print_debug_info(MpegEncContext *s, AVFrame *pict);
709
void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix);
710
void ff_release_unused_pictures(MpegEncContext *s, int remove_current);
711
int ff_find_unused_picture(MpegEncContext *s, int shared);
712
void ff_denoise_dct(MpegEncContext *s, DCTELEM *block);
713
void ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src);
714
int MPV_lowest_referenced_row(MpegEncContext *s, int dir);
715
void MPV_report_decode_progress(MpegEncContext *s);
716
int ff_mpeg_update_thread_context(AVCodecContext *dst, const AVCodecContext *src);
717
const uint8_t *ff_find_start_code(const uint8_t *p, const uint8_t *end, uint32_t *state);
718
void ff_set_qscale(MpegEncContext * s, int qscale);
720
void ff_er_frame_start(MpegEncContext *s);
721
void ff_er_frame_end(MpegEncContext *s);
722
void ff_er_add_slice(MpegEncContext *s, int startx, int starty, int endx, int endy, int status);
724
int ff_dct_common_init(MpegEncContext *s);
725
void ff_convert_matrix(DSPContext *dsp, int (*qmat)[64], uint16_t (*qmat16)[2][64],
726
const uint16_t *quant_matrix, int bias, int qmin, int qmax, int intra);
728
void ff_init_block_index(MpegEncContext *s);
729
void ff_copy_picture(Picture *dst, Picture *src);
732
* allocates a Picture
733
* The pixels are allocated/set by calling get_buffer() if shared=0
735
int ff_alloc_picture(MpegEncContext *s, Picture *pic, int shared);
737
extern const enum PixelFormat ff_pixfmt_list_420[];
738
extern const enum PixelFormat ff_hwaccel_pixfmt_list_420[];
740
static inline void ff_update_block_index(MpegEncContext *s){
741
const int block_size= 8>>s->avctx->lowres;
743
s->block_index[0]+=2;
744
s->block_index[1]+=2;
745
s->block_index[2]+=2;
746
s->block_index[3]+=2;
749
s->dest[0]+= 2*block_size;
750
s->dest[1]+= block_size;
751
s->dest[2]+= block_size;
754
static inline int get_bits_diff(MpegEncContext *s){
755
const int bits= put_bits_count(&s->pb);
756
const int last= s->last_bits;
763
static inline int ff_h263_round_chroma(int x){
764
static const uint8_t h263_chroma_roundtab[16] = {
765
// 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
766
0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1,
768
return h263_chroma_roundtab[x & 0xf] + (x >> 3);
772
void ff_estimate_p_frame_motion(MpegEncContext * s,
774
void ff_estimate_b_frame_motion(MpegEncContext * s,
776
int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type);
777
void ff_fix_long_p_mvs(MpegEncContext * s);
778
void ff_fix_long_mvs(MpegEncContext * s, uint8_t *field_select_table, int field_select,
779
int16_t (*mv_table)[2], int f_code, int type, int truncate);
780
int ff_init_me(MpegEncContext *s);
781
int ff_pre_estimate_p_frame_motion(MpegEncContext * s, int mb_x, int mb_y);
782
int ff_epzs_motion_search(MpegEncContext * s, int *mx_ptr, int *my_ptr,
783
int P[10][2], int src_index, int ref_index, int16_t (*last_mv)[2],
784
int ref_mv_scale, int size, int h);
785
int ff_get_mb_score(MpegEncContext * s, int mx, int my, int src_index,
786
int ref_index, int size, int h, int add_rate);
789
extern const uint8_t ff_mpeg1_dc_scale_table[128];
790
extern const uint8_t * const ff_mpeg2_dc_scale_table[4];
792
void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
793
void mpeg1_encode_mb(MpegEncContext *s,
794
DCTELEM block[6][64],
795
int motion_x, int motion_y);
796
void ff_mpeg1_encode_init(MpegEncContext *s);
797
void ff_mpeg1_encode_slice_header(MpegEncContext *s);
798
void ff_mpeg1_clean_buffers(MpegEncContext *s);
799
int ff_mpeg1_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size, AVCodecParserContext *s);
801
extern const uint8_t ff_aic_dc_scale_table[32];
802
extern const uint8_t ff_h263_chroma_qscale_table[32];
803
extern const uint8_t ff_h263_loop_filter_strength[32];
806
void ff_h261_loop_filter(MpegEncContext *s);
807
void ff_h261_reorder_mb_index(MpegEncContext* s);
808
void ff_h261_encode_mb(MpegEncContext *s,
809
DCTELEM block[6][64],
810
int motion_x, int motion_y);
811
void ff_h261_encode_picture_header(MpegEncContext * s, int picture_number);
812
void ff_h261_encode_init(MpegEncContext *s);
813
int ff_h261_get_picture_format(int width, int height);
817
void rv10_encode_picture_header(MpegEncContext *s, int picture_number);
818
int rv_decode_dc(MpegEncContext *s, int n);
819
void rv20_encode_picture_header(MpegEncContext *s, int picture_number);
823
void msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number);
824
void msmpeg4_encode_ext_header(MpegEncContext * s);
825
void msmpeg4_encode_mb(MpegEncContext * s,
826
DCTELEM block[6][64],
827
int motion_x, int motion_y);
828
int msmpeg4_decode_picture_header(MpegEncContext * s);
829
int msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
830
int ff_msmpeg4_decode_init(AVCodecContext *avctx);
831
void ff_msmpeg4_encode_init(MpegEncContext *s);
832
int ff_wmv2_decode_picture_header(MpegEncContext * s);
833
int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s);
834
void ff_wmv2_add_mb(MpegEncContext *s, DCTELEM block[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr);
835
void ff_mspel_motion(MpegEncContext *s,
836
uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
837
uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
838
int motion_x, int motion_y, int h);
839
int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number);
840
void ff_wmv2_encode_mb(MpegEncContext * s,
841
DCTELEM block[6][64],
842
int motion_x, int motion_y);
844
#endif /* AVCODEC_MPEGVIDEO_H */
added
removed
.pc/post-0.7.1/0007-H.264-fix-overreads-of-qscale_table.patch/libavcodec/mpegvideo.h
