mirror of https://git.ffmpeg.org/ffmpeg.git
619 lines
25 KiB
C
619 lines
25 KiB
C
/*
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* Generic DCT based hybrid video encoder
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* Copyright (c) 2000, 2001, 2002 Fabrice Bellard
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* Copyright (c) 2002-2004 Michael Niedermayer
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*
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* This file is part of 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 "blockdsp.h"
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#include "error_resilience.h"
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#include "fdctdsp.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 "idctdsp.h"
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#include "me_cmp.h"
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#include "motion_est.h"
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#include "mpegpicture.h"
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#include "mpegvideoencdsp.h"
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#include "pixblockdsp.h"
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#include "put_bits.h"
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#include "ratecontrol.h"
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#if FF_API_FLAG_TRUNCATED
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#include "parser.h"
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#endif
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#include "mpegutils.h"
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#include "qpeldsp.h"
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#include "videodsp.h"
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#define MAX_THREADS 32
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#define MAX_B_FRAMES 16
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/**
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* Scantable.
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*/
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typedef struct ScanTable {
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const uint8_t *scantable;
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uint8_t permutated[64];
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uint8_t raster_end[64];
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} ScanTable;
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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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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; ///< Advanced 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 the cache usage
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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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ScanTable intra_scantable;
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uint8_t permutated_intra_h_scantable[64];
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uint8_t permutated_intra_v_scantable[64];
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struct AVCodecContext *avctx;
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/* The following pointer is intended for codecs sharing code
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* between decoder and encoder and in need of a common context to do so. */
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void *private_ctx;
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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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int64_t bit_rate; ///< wanted bit rate
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enum OutputFormat out_format; ///< output format
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int h263_pred; ///< use MPEG-4/H.263 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; ///< H.263+ headers
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int h263_flv; ///< use flv H.263 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 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 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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/* 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 extradata_parsed;
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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 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 coded order for encoding
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int64_t user_specified_pts; ///< last non-zero pts from AVFrame which was passed into avcodec_send_frame()
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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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* Reference to the source picture 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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AVFrame *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 MPEG-1
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int16_t *dc_val_base;
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int16_t *dc_val[3]; ///< used for MPEG-4 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 (H.263)
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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 MPEG-4 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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ScratchpadContext sc;
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int qscale; ///< QP
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int chroma_qscale; ///< chroma QP
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unsigned int lambda; ///< Lagrange multiplier used in rate distortion
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unsigned int lambda2; ///< (lambda*lambda) >> FF_LAMBDA_SHIFT
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int *lambda_table;
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int adaptive_quant; ///< use adaptive quantization
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int dquant; ///< qscale difference to prev qscale
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int pict_type; ///< AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
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int vbv_delay;
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int last_pict_type; //FIXME removes
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int last_non_b_pict_type; ///< used for MPEG-4 gmc B-frames & ratecontrol
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int droppable;
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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 H.263v1 long vector mode
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BlockDSPContext bdsp;
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FDCTDSPContext fdsp;
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H264ChromaContext h264chroma;
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HpelDSPContext hdsp;
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IDCTDSPContext idsp;
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MECmpContext mecc;
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MpegvideoEncDSPContext mpvencdsp;
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PixblockDSPContext pdsp;
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QpelDSPContext qdsp;
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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 (MPEG-4)
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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];
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int16_t (*b_field_mv_table_base)[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]); ///< Only the first element is allocated
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uint8_t (*b_field_select_table[2][2]); ///< Only the first element is allocated
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/* The following fields are encoder-only */
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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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int64_t mb_var_sum; ///< sum of MB variance for current frame
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int64_t mc_mb_var_sum; ///< motion compensated MB variance for current frame
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uint64_t encoding_error[MPEGVIDEO_MAX_PLANES];
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int motion_est; ///< ME algorithm
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int me_penalty_compensation;
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int me_pre; ///< prepass for motion estimation
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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 (MPEG-4)
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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 (H.263, MPEG-4 4MV)
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#define MV_TYPE_16X8 2 ///< 2 vectors, one per 16x8 block
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#define MV_TYPE_FIELD 3 ///< 2 vectors, one per field
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#define MV_TYPE_DMV 4 ///< 2 vectors, special mpeg2 Dual Prime Vectors
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/**motion vectors for a macroblock
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first coordinate : 0 = forward 1 = backward
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second " : depend on type
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third " : 0 = x, 1 = y
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*/
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int mv[2][4][2];
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int field_select[2][2];
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int last_mv[2][2][2]; ///< last MV, used for MV prediction in MPEG-1 & B-frame MPEG-4
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const 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 (MPEG-4, msmpeg4, ...)
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for B-frames rounding mode is always 0 */
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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 (defines in mpegutils.h)
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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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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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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 *intra_chroma_ac_vlc_length;
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uint8_t *intra_chroma_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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int coded_score[12];
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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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/* 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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/* 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 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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#if FF_API_FLAG_TRUNCATED
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ParseContext parse_context;
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#endif
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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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/* H.263+ specific */
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int umvplus; ///< == H.263+ && 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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/* MPEG-4 specific */
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int studio_profile;
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int dct_precision;
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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 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 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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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 MPEG-4
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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 */
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int rv10_version; ///< RV10 version: 0 or 3
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int rv10_first_dc_coded[3];
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/* MJPEG specific */
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struct MJpegContext *mjpeg_ctx;
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int esc_pos;
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/* MSMPEG4 specific */
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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
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int first_slice_line; ///< used in MPEG-4 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;
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int esc3_run_length;
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int inter_intra_pred;
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int mspel;
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/* decompression specific */
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GetBitContext gb;
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/* MPEG-1 specific */
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int last_mv_dir; ///< last mv_dir, used for B-frame encoding
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int vbv_delay_pos; ///< offset of vbv_delay in the bitstream
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|
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/* MPEG-2-specific - I wished not to have to support this mess. */
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int progressive_sequence;
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int mpeg_f_code[2][2];
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// picture structure defines are loaded from mpegutils.h
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int picture_structure;
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int intra_dc_precision;
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int frame_pred_frame_dct;
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int top_field_first;
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|
int concealment_motion_vectors;
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int q_scale_type;
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|
int brd_scale;
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|
int intra_vlc_format;
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|
int alternate_scan;
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|
int repeat_first_field;
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|
int chroma_420_type;
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|
int chroma_format;
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|
#define CHROMA_420 1
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#define CHROMA_422 2
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|
#define CHROMA_444 3
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int chroma_x_shift;//depend on pix_format, that depend on chroma_format
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|
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
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|
|
|
/* RTP specific */
|
|
int rtp_mode;
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|
int rtp_payload_size;
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|
|
|
uint8_t *ptr_lastgob;
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|
int16_t (*pblocks[12])[64];
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|
|
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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
|
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int (*decode_mb)(struct MpegEncContext *s, int16_t block[12][64]); // used by some codecs to avoid a switch()
|
|
|
|
#define SLICE_OK 0
|
|
#define SLICE_ERROR -1
|
|
#define SLICE_END -2 ///<end marker found
|
|
#define SLICE_NOEND -3 ///<no end marker or error found but mb count exceeded
|
|
|
|
void (*dct_unquantize_mpeg1_intra)(struct MpegEncContext *s,
|
|
int16_t *block/*align 16*/, int n, int qscale);
|
|
void (*dct_unquantize_mpeg1_inter)(struct MpegEncContext *s,
|
|
int16_t *block/*align 16*/, int n, int qscale);
|
|
void (*dct_unquantize_mpeg2_intra)(struct MpegEncContext *s,
|
|
int16_t *block/*align 16*/, int n, int qscale);
|
|
void (*dct_unquantize_mpeg2_inter)(struct MpegEncContext *s,
|
|
int16_t *block/*align 16*/, int n, int qscale);
|
|
void (*dct_unquantize_h263_intra)(struct MpegEncContext *s,
|
|
int16_t *block/*align 16*/, int n, int qscale);
|
|
void (*dct_unquantize_h263_inter)(struct MpegEncContext *s,
|
|
int16_t *block/*align 16*/, int n, int qscale);
|
|
void (*dct_unquantize_intra)(struct MpegEncContext *s, // unquantizer to use (MPEG-4 can use both)
|
|
int16_t *block/*align 16*/, int n, int qscale);
|
|
void (*dct_unquantize_inter)(struct MpegEncContext *s, // unquantizer to use (MPEG-4 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;
|
|
|
|
/**
|
|
* ratecontrol qmin qmax limiting method
|
|
* 0-> clipping, 1-> use a nice continuous function to limit qscale within qmin/qmax.
|
|
*/
|
|
float rc_qsquish;
|
|
float rc_qmod_amp;
|
|
int rc_qmod_freq;
|
|
float rc_initial_cplx;
|
|
float rc_buffer_aggressivity;
|
|
float border_masking;
|
|
int lmin, lmax;
|
|
int vbv_ignore_qmax;
|
|
|
|
char *rc_eq;
|
|
|
|
/* temp buffers for rate control */
|
|
float *cplx_tab, *bits_tab;
|
|
|
|
/* flag to indicate a reinitialization is required, e.g. after
|
|
* a frame size change */
|
|
int context_reinit;
|
|
|
|
ERContext er;
|
|
|
|
int error_rate;
|
|
|
|
/* temporary frames used by b_frame_strategy = 2 */
|
|
AVFrame *tmp_frames[MAX_B_FRAMES + 2];
|
|
int b_frame_strategy;
|
|
int b_sensitivity;
|
|
|
|
/* frame skip options for encoding */
|
|
int frame_skip_threshold;
|
|
int frame_skip_factor;
|
|
int frame_skip_exp;
|
|
int frame_skip_cmp;
|
|
|
|
int scenechange_threshold;
|
|
int noise_reduction;
|
|
|
|
int intra_penalty;
|
|
} MpegEncContext;
|
|
|
|
|
|
/**
|
|
* 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);
|
|
|
|
int ff_mpv_common_init(MpegEncContext *s);
|
|
void ff_mpv_common_init_arm(MpegEncContext *s);
|
|
void ff_mpv_common_init_axp(MpegEncContext *s);
|
|
void ff_mpv_common_init_neon(MpegEncContext *s);
|
|
void ff_mpv_common_init_ppc(MpegEncContext *s);
|
|
void ff_mpv_common_init_x86(MpegEncContext *s);
|
|
void ff_mpv_common_init_mips(MpegEncContext *s);
|
|
/**
|
|
* Initialize an MpegEncContext's thread contexts. Presumes that
|
|
* slice_context_count is already set and that all the fields
|
|
* that are freed/reset in free_duplicate_context() are NULL.
|
|
*/
|
|
int ff_mpv_init_duplicate_contexts(MpegEncContext *s);
|
|
/**
|
|
* Initialize and allocates MpegEncContext fields dependent on the resolution.
|
|
*/
|
|
int ff_mpv_init_context_frame(MpegEncContext *s);
|
|
/**
|
|
* Frees and resets MpegEncContext fields depending on the resolution
|
|
* as well as the slice thread contexts.
|
|
* Is used during resolution changes to avoid a full reinitialization of the
|
|
* codec.
|
|
*/
|
|
void ff_mpv_free_context_frame(MpegEncContext *s);
|
|
|
|
void ff_mpv_common_end(MpegEncContext *s);
|
|
|
|
void ff_clean_intra_table_entries(MpegEncContext *s);
|
|
|
|
int ff_update_duplicate_context(MpegEncContext *dst, const MpegEncContext *src);
|
|
void ff_set_qscale(MpegEncContext * s, int qscale);
|
|
|
|
void ff_mpv_idct_init(MpegEncContext *s);
|
|
void ff_init_scantable(const uint8_t *permutation, ScanTable *st,
|
|
const uint8_t *src_scantable);
|
|
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 *const *ref_picture,
|
|
op_pixels_func (*pix_op)[4],
|
|
qpel_mc_func (*qpix_op)[16]);
|
|
|
|
static inline void ff_update_block_index(MpegEncContext *s, int bits_per_raw_sample,
|
|
int lowres, int chroma_x_shift)
|
|
{
|
|
const int bytes_per_pixel = 1 + (bits_per_raw_sample > 8);
|
|
const int block_size = (8 * bytes_per_pixel) >> 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] += (2 >> chroma_x_shift) * block_size;
|
|
s->dest[2] += (2 >> chroma_x_shift) * block_size;
|
|
}
|
|
|
|
#endif /* AVCODEC_MPEGVIDEO_H */
|