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960 lines
41 KiB
960 lines
41 KiB
/* |
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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 FFmpeg. |
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* |
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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 "h264chroma.h" |
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#include "h263dsp.h" |
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#include "hpeldsp.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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#include "libavutil/timecode.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 21 |
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#define MAX_FCODE 7 |
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#define MAX_MV 4096 |
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#define MAX_THREADS 32 |
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#define MAX_PICTURE_COUNT 36 |
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#define MAX_B_FRAMES 16 |
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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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#if !FF_API_MB_TYPE |
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#define MB_TYPE_INTRA4x4 0x0001 |
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#define MB_TYPE_INTRA16x16 0x0002 //FIXME H.264-specific |
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#define MB_TYPE_INTRA_PCM 0x0004 //FIXME H.264-specific |
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#define MB_TYPE_16x16 0x0008 |
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#define MB_TYPE_16x8 0x0010 |
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#define MB_TYPE_8x16 0x0020 |
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#define MB_TYPE_8x8 0x0040 |
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#define MB_TYPE_INTERLACED 0x0080 |
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#define MB_TYPE_DIRECT2 0x0100 //FIXME |
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#define MB_TYPE_ACPRED 0x0200 |
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#define MB_TYPE_GMC 0x0400 |
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#define MB_TYPE_SKIP 0x0800 |
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#define MB_TYPE_P0L0 0x1000 |
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#define MB_TYPE_P1L0 0x2000 |
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#define MB_TYPE_P0L1 0x4000 |
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#define MB_TYPE_P1L1 0x8000 |
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#define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0) |
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#define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1) |
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#define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1) |
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#define MB_TYPE_QUANT 0x00010000 |
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#define MB_TYPE_CBP 0x00020000 |
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#endif |
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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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int alloc_mb_width; ///< mb_width used to allocate tables |
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int alloc_mb_height; ///< mb_height used to allocate tables |
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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/fields 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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int recovered; ///< Picture at IDR or recovery point + recovery count |
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int crop; |
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int crop_left; |
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int crop_top; |
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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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ptrdiff_t linesize; ///< line size, in bytes, may be different from width |
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ptrdiff_t 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_video2() |
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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 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 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 vbv_delay; |
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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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AVRational mpeg2_frame_rate_ext; |
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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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H264ChromaContext h264chroma; |
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HpelDSPContext hdsp; |
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VideoDSPContext vdsp; |
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H263DSPContext h263dsp; |
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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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int mv[2][4][2]; |
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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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MotionEstContext me; |
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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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|
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/* macroblock layer */ |
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int mb_x, mb_y; |
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int mb_skip_run; |
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int mb_intra; |
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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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|
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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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|
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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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|
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#define CANDIDATE_MB_TYPE_DIRECT0 0x1000 |
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|
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int block_index[6]; ///< index to current MB in block based arrays with edges |
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int block_wrap[6]; |
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uint8_t *dest[3]; |
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|
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int *mb_index2xy; ///< mb_index -> mb_x + mb_y*mb_stride |
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|
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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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#define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level)) |
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|
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int coded_score[12]; |
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|
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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_chroma_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_chroma_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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int dct_count[2]; |
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uint16_t (*dct_offset)[64]; |
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|
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void *opaque; ///< private data for the user |
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|
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/* bit rate control */ |
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int64_t total_bits; |
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int frame_bits; ///< bits used for the current frame |
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int stuffing_bits; ///< bits used for stuffing |
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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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|
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/* statistics, used for 2-pass encoding */ |
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int mv_bits; |
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int header_bits; |
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int i_tex_bits; |
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int p_tex_bits; |
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int i_count; |
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int f_count; |
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int b_count; |
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int skip_count; |
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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 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 err_recognition; |
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ParseContext parse_context; |
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/* H.263 specific */ |
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int gob_index; |
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int obmc; ///< overlapped block motion compensation |
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int mb_info; ///< interval for outputting info about mb offsets as side data |
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int prev_mb_info, last_mb_info; |
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uint8_t *mb_info_ptr; |
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int mb_info_size; |
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int ehc_mode; |
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|
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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 modified_quant; |
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int loop_filter; |
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int custom_pcf; |
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|
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/* mpeg4 specific */ |
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///< number of bits to represent the fractional part of time (encoder only) |
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int time_increment_bits; |
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int last_time_base; |
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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 real_sprite_warping_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 mcsel; |
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int quant_precision; |
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int quarter_sample; ///< 1->qpel, 0->half pel ME/MC |
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int aspect_ratio_info; //FIXME remove |
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int sprite_warping_accuracy; |
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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 low_delay; ///< no reordering needed / has no b-frames |
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int vo_type; |
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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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PutBitContext tex_pb; ///< used for data partitioned VOPs |
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PutBitContext pb2; ///< used for data partitioned VOPs |
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int mpeg_quant; |
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int padding_bug_score; ///< used to detect the VERY common padding bug in MPEG4 |
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|
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/* divx specific, used to workaround (many) bugs in divx5 */ |
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int divx_packed; |
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uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them |
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int bitstream_buffer_size; |
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unsigned int allocated_bitstream_buffer_size; |
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|
|
/* RV10 specific */ |
|
int rv10_version; ///< RV10 version: 0 or 3 |
|
int rv10_first_dc_coded[3]; |
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int orig_width, orig_height; |
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|
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/* MJPEG specific */ |
|
struct MJpegContext *mjpeg_ctx; |
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int esc_pos; |
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|
|
/* MSMPEG4 specific */ |
|
int mv_table_index; |
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int rl_table_index; |
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int rl_chroma_table_index; |
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int dc_table_index; |
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int use_skip_mb_code; |
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int slice_height; ///< in macroblocks |
|
int first_slice_line; ///< used in mpeg4 too to handle resync markers |
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int flipflop_rounding; |
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int msmpeg4_version; ///< 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8 |
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int per_mb_rl_table; |
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int esc3_level_length; |
|
int esc3_run_length; |
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/** [mb_intra][isChroma][level][run][last] */ |
|
int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2]; |
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int inter_intra_pred; |
|
int mspel; |
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|
|
/* decompression specific */ |
|
GetBitContext gb; |
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|
|
/* 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 |
|
uint8_t *vbv_delay_ptr; ///< pointer to vbv_delay in the bitstream |
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|
|
/* 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; |
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|
|
int progressive_frame; |
|
int full_pel[2]; |
|
int interlaced_dct; |
|
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. |
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|
|
/* RTP specific */ |
|
int rtp_mode; |
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|
|
char *tc_opt_str; ///< timecode option string |
|
AVTimecode tc; ///< timecode context |
|
|
|
uint8_t *ptr_lastgob; |
|
int swap_uv; //vcr2 codec is an MPEG-2 variant with U and V swapped |
|
int pack_pblocks; //xvmc needs to keep blocks without gaps. |
|
int16_t (*pblocks[12])[64]; |
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|
|
int16_t (*block)[64]; ///< points to one of the following blocks |
|
int16_t (*blocks)[12][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 |
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|
|
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; |
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|
|
/* flag to indicate a reinitialization is required, e.g. after |
|
* a frame size change */ |
|
int context_reinit; |
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|
|
ERContext er; |
|
|
|
int error_rate; |
|
|
|
/* temporary frames used by b_frame_strategy = 2 */ |
|
AVFrame *tmp_frames[MAX_B_FRAMES + 2]; |
|
} 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 },\ |
|
{ "error_rate", "Simulate errors in the bitstream to test error concealment.", \ |
|
FF_MPV_OFFSET(error_rate), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FF_MPV_OPT_FLAGS }, |
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|
|
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_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, |
|
AVFrame *frame, int *got_packet); |
|
void ff_dct_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_bfin(MpegEncContext *s); |
|
void ff_MPV_common_init_ppc(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, AVFrame *pict); |
|
void ff_print_debug_info2(AVCodecContext *avctx, Picture *p, AVFrame *pict, uint8_t *mbskip_table, |
|
int *low_delay, |
|
int mb_width, int mb_height, int mb_stride, int quarter_sample); |
|
|
|
int ff_mpv_export_qp_table(MpegEncContext *s, AVFrame *f, Picture *p, int qp_type); |
|
|
|
void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix); |
|
int ff_find_unused_picture(MpegEncContext *s, int shared); |
|
void ff_denoise_dct(MpegEncContext *s, 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); |
|
void ff_set_qscale(MpegEncContext * s, int qscale); |
|
|
|
void ff_mpeg_er_frame_start(MpegEncContext *s); |
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|
|
int ff_dct_common_init(MpegEncContext *s); |
|
int ff_dct_encode_init(MpegEncContext *s); |
|
void ff_convert_matrix(DSPContext *dsp, int (*qmat)[64], uint16_t (*qmat16)[2][64], |
|
const uint16_t *quant_matrix, int bias, int qmin, int qmax, int intra); |
|
int ff_dct_quantize_c(MpegEncContext *s, int16_t *block, int n, int qscale, int *overflow); |
|
|
|
void ff_init_block_index(MpegEncContext *s); |
|
|
|
void ff_MPV_motion(MpegEncContext *s, |
|
uint8_t *dest_y, uint8_t *dest_cb, |
|
uint8_t *dest_cr, int dir, |
|
uint8_t **ref_picture, |
|
op_pixels_func (*pix_op)[4], |
|
qpel_mc_func (*qpix_op)[16]); |
|
|
|
/** |
|
* Allocate a Picture. |
|
* The pixels are allocated/set by calling get_buffer() if shared = 0. |
|
*/ |
|
int ff_alloc_picture(MpegEncContext *s, Picture *pic, int shared); |
|
|
|
extern const enum AVPixelFormat ff_pixfmt_list_420[]; |
|
|
|
/** |
|
* permute block according to permuatation. |
|
* @param last last non zero element in scantable order |
|
*/ |
|
void ff_block_permute(int16_t *block, uint8_t *permutation, const uint8_t *scantable, int last); |
|
|
|
static inline void ff_update_block_index(MpegEncContext *s){ |
|
const int block_size= 8 >> s->avctx->lowres; |
|
|
|
s->block_index[0]+=2; |
|
s->block_index[1]+=2; |
|
s->block_index[2]+=2; |
|
s->block_index[3]+=2; |
|
s->block_index[4]++; |
|
s->block_index[5]++; |
|
s->dest[0]+= 2*block_size; |
|
s->dest[1]+= block_size; |
|
s->dest[2]+= block_size; |
|
} |
|
|
|
static inline int get_bits_diff(MpegEncContext *s){ |
|
const int bits= put_bits_count(&s->pb); |
|
const int last= s->last_bits; |
|
|
|
s->last_bits = bits; |
|
|
|
return bits - last; |
|
} |
|
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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, |
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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, |
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int16_t (*mv_table)[2], int f_code, int type, int truncate); |
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int ff_init_me(MpegEncContext *s); |
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int ff_pre_estimate_p_frame_motion(MpegEncContext * s, int mb_x, int mb_y); |
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int ff_epzs_motion_search(MpegEncContext * s, int *mx_ptr, int *my_ptr, |
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int P[10][2], int src_index, int ref_index, int16_t (*last_mv)[2], |
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int ref_mv_scale, int size, int h); |
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int ff_get_mb_score(MpegEncContext * s, int mx, int my, int src_index, |
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int ref_index, int size, int h, int add_rate); |
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|
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/* mpeg12.c */ |
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extern const uint8_t ff_mpeg1_dc_scale_table[128]; |
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extern const uint8_t * const ff_mpeg2_dc_scale_table[4]; |
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|
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void ff_mpeg1_encode_picture_header(MpegEncContext *s, int picture_number); |
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void ff_mpeg1_encode_mb(MpegEncContext *s, |
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int16_t block[6][64], |
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int motion_x, int motion_y); |
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void ff_mpeg1_encode_init(MpegEncContext *s); |
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void ff_mpeg1_encode_slice_header(MpegEncContext *s); |
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|
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extern const uint8_t ff_aic_dc_scale_table[32]; |
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extern const uint8_t ff_h263_chroma_qscale_table[32]; |
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|
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/* rv10.c */ |
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void ff_rv10_encode_picture_header(MpegEncContext *s, int picture_number); |
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int ff_rv_decode_dc(MpegEncContext *s, int n); |
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void ff_rv20_encode_picture_header(MpegEncContext *s, int picture_number); |
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|
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/* msmpeg4.c */ |
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void ff_msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number); |
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void ff_msmpeg4_encode_ext_header(MpegEncContext * s); |
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void ff_msmpeg4_encode_mb(MpegEncContext * s, |
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int16_t block[6][64], |
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int motion_x, int motion_y); |
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int ff_msmpeg4_decode_picture_header(MpegEncContext * s); |
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int ff_msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size); |
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int ff_msmpeg4_decode_init(AVCodecContext *avctx); |
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void ff_msmpeg4_encode_init(MpegEncContext *s); |
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int ff_wmv2_decode_picture_header(MpegEncContext * s); |
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int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s); |
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void ff_wmv2_add_mb(MpegEncContext *s, int16_t block[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr); |
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void ff_mspel_motion(MpegEncContext *s, |
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uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, |
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uint8_t **ref_picture, op_pixels_func (*pix_op)[4], |
|
int motion_x, int motion_y, int h); |
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int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number); |
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void ff_wmv2_encode_mb(MpegEncContext * s, |
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int16_t block[6][64], |
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int motion_x, int motion_y); |
|
|
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int ff_mpeg_ref_picture(MpegEncContext *s, Picture *dst, Picture *src); |
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void ff_mpeg_unref_picture(MpegEncContext *s, Picture *picture); |
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void ff_free_picture_tables(Picture *pic); |
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|
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#endif /* AVCODEC_MPEGVIDEO_H */
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