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diff --git a/media/ffvpx/libavcodec/mpegvideo.h b/media/ffvpx/libavcodec/mpegvideo.h
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+/*
+ * Generic DCT based hybrid video encoder
+ * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
+ * Copyright (c) 2002-2004 Michael Niedermayer
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * mpegvideo header.
+ */
+
+#ifndef AVCODEC_MPEGVIDEO_H
+#define AVCODEC_MPEGVIDEO_H
+
+#include "avcodec.h"
+#include "blockdsp.h"
+#include "error_resilience.h"
+#include "fdctdsp.h"
+#include "get_bits.h"
+#include "h264chroma.h"
+#include "h263dsp.h"
+#include "hpeldsp.h"
+#include "idctdsp.h"
+#include "me_cmp.h"
+#include "motion_est.h"
+#include "mpegpicture.h"
+#include "mpegvideoencdsp.h"
+#include "pixblockdsp.h"
+#include "put_bits.h"
+#include "ratecontrol.h"
+#if FF_API_FLAG_TRUNCATED
+#include "parser.h"
+#endif
+#include "mpegutils.h"
+#include "qpeldsp.h"
+#include "videodsp.h"
+
+#define MAX_THREADS 32
+
+#define MAX_B_FRAMES 16
+
+/**
+ * Scantable.
+ */
+typedef struct ScanTable {
+ const uint8_t *scantable;
+ uint8_t permutated[64];
+ uint8_t raster_end[64];
+} ScanTable;
+
+/**
+ * MpegEncContext.
+ */
+typedef struct MpegEncContext {
+ AVClass *class;
+
+ int y_dc_scale, c_dc_scale;
+ int ac_pred;
+ int block_last_index[12]; ///< last non zero coefficient in block
+ int h263_aic; ///< Advanced INTRA Coding (AIC)
+
+ /* scantables */
+ ScanTable inter_scantable; ///< if inter == intra then intra should be used to reduce the cache usage
+
+ /* WARNING: changes above this line require updates to hardcoded
+ * offsets used in ASM. */
+
+ ScanTable intra_scantable;
+ uint8_t permutated_intra_h_scantable[64];
+ uint8_t permutated_intra_v_scantable[64];
+
+ struct AVCodecContext *avctx;
+ /* The following pointer is intended for codecs sharing code
+ * between decoder and encoder and in need of a common context to do so. */
+ void *private_ctx;
+ /* the following parameters must be initialized before encoding */
+ int width, height;///< picture size. must be a multiple of 16
+ int gop_size;
+ int intra_only; ///< if true, only intra pictures are generated
+ int64_t bit_rate; ///< wanted bit rate
+ enum OutputFormat out_format; ///< output format
+ int h263_pred; ///< use MPEG-4/H.263 ac/dc predictions
+ int pb_frame; ///< PB-frame mode (0 = none, 1 = base, 2 = improved)
+
+/* the following codec id fields are deprecated in favor of codec_id */
+ int h263_plus; ///< H.263+ headers
+ int h263_flv; ///< use flv H.263 header
+
+ enum AVCodecID codec_id; /* see AV_CODEC_ID_xxx */
+ int fixed_qscale; ///< fixed qscale if non zero
+ int encoding; ///< true if we are encoding (vs decoding)
+ int max_b_frames; ///< max number of B-frames for encoding
+ int luma_elim_threshold;
+ int chroma_elim_threshold;
+ int workaround_bugs; ///< workaround bugs in encoders which cannot be detected automatically
+ int codec_tag; ///< internal codec_tag upper case converted from avctx codec_tag
+ /* the following fields are managed internally by the encoder */
+
+ /* sequence parameters */
+ int context_initialized;
+ int input_picture_number; ///< used to set pic->display_picture_number, should not be used for/by anything else
+ int coded_picture_number; ///< used to set pic->coded_picture_number, should not be used for/by anything else
+ int picture_number; //FIXME remove, unclear definition
+ int picture_in_gop_number; ///< 0-> first pic in gop, ...
+ int mb_width, mb_height; ///< number of MBs horizontally & vertically
+ int mb_stride; ///< mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11
+ int b8_stride; ///< 2*mb_width+1 used for some 8x8 block arrays to allow simple addressing
+ int h_edge_pos, v_edge_pos;///< horizontal / vertical position of the right/bottom edge (pixel replication)
+ int mb_num; ///< number of MBs of a picture
+ ptrdiff_t linesize; ///< line size, in bytes, may be different from width
+ ptrdiff_t uvlinesize; ///< line size, for chroma in bytes, may be different from width
+ Picture *picture; ///< main picture buffer
+ Picture **input_picture; ///< next pictures on display order for encoding
+ Picture **reordered_input_picture; ///< pointer to the next pictures in coded order for encoding
+
+ int64_t user_specified_pts; ///< last non-zero pts from AVFrame which was passed into avcodec_send_frame()
+ /**
+ * pts difference between the first and second input frame, used for
+ * calculating dts of the first frame when there's a delay */
+ int64_t dts_delta;
+ /**
+ * reordered pts to be used as dts for the next output frame when there's
+ * a delay */
+ int64_t reordered_pts;
+
+ /** bit output */
+ PutBitContext pb;
+
+ int start_mb_y; ///< start mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
+ int end_mb_y; ///< end mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
+ struct MpegEncContext *thread_context[MAX_THREADS];
+ int slice_context_count; ///< number of used thread_contexts
+
+ /**
+ * copy of the previous picture structure.
+ * note, linesize & data, might not match the previous picture (for field pictures)
+ */
+ Picture last_picture;
+
+ /**
+ * copy of the next picture structure.
+ * note, linesize & data, might not match the next picture (for field pictures)
+ */
+ Picture next_picture;
+
+ /**
+ * Reference to the source picture for encoding.
+ * note, linesize & data, might not match the source picture (for field pictures)
+ */
+ AVFrame *new_picture;
+
+ /**
+ * copy of the current picture structure.
+ * note, linesize & data, might not match the current picture (for field pictures)
+ */
+ Picture current_picture; ///< buffer to store the decompressed current picture
+
+ Picture *last_picture_ptr; ///< pointer to the previous picture.
+ Picture *next_picture_ptr; ///< pointer to the next picture (for bidir pred)
+ Picture *current_picture_ptr; ///< pointer to the current picture
+ int last_dc[3]; ///< last DC values for MPEG-1
+ int16_t *dc_val_base;
+ int16_t *dc_val[3]; ///< used for MPEG-4 DC prediction, all 3 arrays must be continuous
+ const uint8_t *y_dc_scale_table; ///< qscale -> y_dc_scale table
+ const uint8_t *c_dc_scale_table; ///< qscale -> c_dc_scale table
+ const uint8_t *chroma_qscale_table; ///< qscale -> chroma_qscale (H.263)
+ uint8_t *coded_block_base;
+ uint8_t *coded_block; ///< used for coded block pattern prediction (msmpeg4v3, wmv1)
+ int16_t (*ac_val_base)[16];
+ int16_t (*ac_val[3])[16]; ///< used for MPEG-4 AC prediction, all 3 arrays must be continuous
+ int mb_skipped; ///< MUST BE SET only during DECODING
+ uint8_t *mbskip_table; /**< used to avoid copy if macroblock skipped (for black regions for example)
+ and used for B-frame encoding & decoding (contains skip table of next P-frame) */
+ uint8_t *mbintra_table; ///< used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
+ uint8_t *cbp_table; ///< used to store cbp, ac_pred for partitioned decoding
+ uint8_t *pred_dir_table; ///< used to store pred_dir for partitioned decoding
+
+ ScratchpadContext sc;
+
+ int qscale; ///< QP
+ int chroma_qscale; ///< chroma QP
+ unsigned int lambda; ///< Lagrange multiplier used in rate distortion
+ unsigned int lambda2; ///< (lambda*lambda) >> FF_LAMBDA_SHIFT
+ int *lambda_table;
+ int adaptive_quant; ///< use adaptive quantization
+ int dquant; ///< qscale difference to prev qscale
+ int pict_type; ///< AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
+ int vbv_delay;
+ int last_pict_type; //FIXME removes
+ int last_non_b_pict_type; ///< used for MPEG-4 gmc B-frames & ratecontrol
+ int droppable;
+ int last_lambda_for[5]; ///< last lambda for a specific pict type
+ int skipdct; ///< skip dct and code zero residual
+
+ /* motion compensation */
+ int unrestricted_mv; ///< mv can point outside of the coded picture
+ int h263_long_vectors; ///< use horrible H.263v1 long vector mode
+
+ BlockDSPContext bdsp;
+ FDCTDSPContext fdsp;
+ H264ChromaContext h264chroma;
+ HpelDSPContext hdsp;
+ IDCTDSPContext idsp;
+ MECmpContext mecc;
+ MpegvideoEncDSPContext mpvencdsp;
+ PixblockDSPContext pdsp;
+ QpelDSPContext qdsp;
+ VideoDSPContext vdsp;
+ H263DSPContext h263dsp;
+ int f_code; ///< forward MV resolution
+ int b_code; ///< backward MV resolution for B-frames (MPEG-4)
+ int16_t (*p_mv_table_base)[2];
+ int16_t (*b_forw_mv_table_base)[2];
+ int16_t (*b_back_mv_table_base)[2];
+ int16_t (*b_bidir_forw_mv_table_base)[2];
+ int16_t (*b_bidir_back_mv_table_base)[2];
+ int16_t (*b_direct_mv_table_base)[2];
+ int16_t (*p_field_mv_table_base)[2];
+ int16_t (*b_field_mv_table_base)[2];
+ int16_t (*p_mv_table)[2]; ///< MV table (1MV per MB) P-frame encoding
+ int16_t (*b_forw_mv_table)[2]; ///< MV table (1MV per MB) forward mode B-frame encoding
+ int16_t (*b_back_mv_table)[2]; ///< MV table (1MV per MB) backward mode B-frame encoding
+ int16_t (*b_bidir_forw_mv_table)[2]; ///< MV table (1MV per MB) bidir mode B-frame encoding
+ int16_t (*b_bidir_back_mv_table)[2]; ///< MV table (1MV per MB) bidir mode B-frame encoding
+ int16_t (*b_direct_mv_table)[2]; ///< MV table (1MV per MB) direct mode B-frame encoding
+ int16_t (*p_field_mv_table[2][2])[2]; ///< MV table (2MV per MB) interlaced P-frame encoding
+ int16_t (*b_field_mv_table[2][2][2])[2];///< MV table (4MV per MB) interlaced B-frame encoding
+ uint8_t (*p_field_select_table[2]); ///< Only the first element is allocated
+ uint8_t (*b_field_select_table[2][2]); ///< Only the first element is allocated
+
+ /* The following fields are encoder-only */
+ uint16_t *mb_var; ///< Table for MB variances
+ uint16_t *mc_mb_var; ///< Table for motion compensated MB variances
+ uint8_t *mb_mean; ///< Table for MB luminance
+ int64_t mb_var_sum; ///< sum of MB variance for current frame
+ int64_t mc_mb_var_sum; ///< motion compensated MB variance for current frame
+ uint64_t encoding_error[MPEGVIDEO_MAX_PLANES];
+
+ int motion_est; ///< ME algorithm
+ int me_penalty_compensation;
+ int me_pre; ///< prepass for motion estimation
+ int mv_dir;
+#define MV_DIR_FORWARD 1
+#define MV_DIR_BACKWARD 2
+#define MV_DIRECT 4 ///< bidirectional mode where the difference equals the MV of the last P/S/I-Frame (MPEG-4)
+ int mv_type;
+#define MV_TYPE_16X16 0 ///< 1 vector for the whole mb
+#define MV_TYPE_8X8 1 ///< 4 vectors (H.263, MPEG-4 4MV)
+#define MV_TYPE_16X8 2 ///< 2 vectors, one per 16x8 block
+#define MV_TYPE_FIELD 3 ///< 2 vectors, one per field
+#define MV_TYPE_DMV 4 ///< 2 vectors, special mpeg2 Dual Prime Vectors
+ /**motion vectors for a macroblock
+ first coordinate : 0 = forward 1 = backward
+ second " : depend on type
+ third " : 0 = x, 1 = y
+ */
+ int mv[2][4][2];
+ int field_select[2][2];
+ int last_mv[2][2][2]; ///< last MV, used for MV prediction in MPEG-1 & B-frame MPEG-4
+ const uint8_t *fcode_tab; ///< smallest fcode needed for each MV
+ int16_t direct_scale_mv[2][64]; ///< precomputed to avoid divisions in ff_mpeg4_set_direct_mv
+
+ MotionEstContext me;
+
+ int no_rounding; /**< apply no rounding to motion compensation (MPEG-4, msmpeg4, ...)
+ for B-frames rounding mode is always 0 */
+
+ /* macroblock layer */
+ int mb_x, mb_y;
+ int mb_skip_run;
+ int mb_intra;
+ uint16_t *mb_type; ///< Table for candidate MB types for encoding (defines in mpegutils.h)
+
+ int block_index[6]; ///< index to current MB in block based arrays with edges
+ int block_wrap[6];
+ uint8_t *dest[3];
+
+ int *mb_index2xy; ///< mb_index -> mb_x + mb_y*mb_stride
+
+ /** matrix transmitted in the bitstream */
+ uint16_t intra_matrix[64];
+ uint16_t chroma_intra_matrix[64];
+ uint16_t inter_matrix[64];
+ uint16_t chroma_inter_matrix[64];
+
+ int intra_quant_bias; ///< bias for the quantizer
+ int inter_quant_bias; ///< bias for the quantizer
+ int min_qcoeff; ///< minimum encodable coefficient
+ int max_qcoeff; ///< maximum encodable coefficient
+ int ac_esc_length; ///< num of bits needed to encode the longest esc
+ uint8_t *intra_ac_vlc_length;
+ uint8_t *intra_ac_vlc_last_length;
+ uint8_t *intra_chroma_ac_vlc_length;
+ uint8_t *intra_chroma_ac_vlc_last_length;
+ uint8_t *inter_ac_vlc_length;
+ uint8_t *inter_ac_vlc_last_length;
+ uint8_t *luma_dc_vlc_length;
+
+ int coded_score[12];
+
+ /** precomputed matrix (combine qscale and DCT renorm) */
+ int (*q_intra_matrix)[64];
+ int (*q_chroma_intra_matrix)[64];
+ int (*q_inter_matrix)[64];
+ /** identical to the above but for MMX & these are not permutated, second 64 entries are bias*/
+ uint16_t (*q_intra_matrix16)[2][64];
+ uint16_t (*q_chroma_intra_matrix16)[2][64];
+ uint16_t (*q_inter_matrix16)[2][64];
+
+ /* noise reduction */
+ int (*dct_error_sum)[64];
+ int dct_count[2];
+ uint16_t (*dct_offset)[64];
+
+ /* bit rate control */
+ int64_t total_bits;
+ int frame_bits; ///< bits used for the current frame
+ int stuffing_bits; ///< bits used for stuffing
+ int next_lambda; ///< next lambda used for retrying to encode a frame
+ RateControlContext rc_context; ///< contains stuff only accessed in ratecontrol.c
+
+ /* statistics, used for 2-pass encoding */
+ int mv_bits;
+ int header_bits;
+ int i_tex_bits;
+ int p_tex_bits;
+ int i_count;
+ int skip_count;
+ int misc_bits; ///< cbp, mb_type
+ int last_bits; ///< temp var used for calculating the above vars
+
+ /* error concealment / resync */
+ int resync_mb_x; ///< x position of last resync marker
+ int resync_mb_y; ///< y position of last resync marker
+ GetBitContext last_resync_gb; ///< used to search for the next resync marker
+ int mb_num_left; ///< number of MBs left in this video packet (for partitioned Slices only)
+
+#if FF_API_FLAG_TRUNCATED
+ ParseContext parse_context;
+#endif
+
+ /* H.263 specific */
+ int gob_index;
+ int obmc; ///< overlapped block motion compensation
+ int mb_info; ///< interval for outputting info about mb offsets as side data
+ int prev_mb_info, last_mb_info;
+ uint8_t *mb_info_ptr;
+ int mb_info_size;
+ int ehc_mode;
+
+ /* H.263+ specific */
+ int umvplus; ///< == H.263+ && unrestricted_mv
+ int h263_aic_dir; ///< AIC direction: 0 = left, 1 = top
+ int h263_slice_structured;
+ int alt_inter_vlc; ///< alternative inter vlc
+ int modified_quant;
+ int loop_filter;
+ int custom_pcf;
+
+ /* MPEG-4 specific */
+ int studio_profile;
+ int dct_precision;
+ ///< number of bits to represent the fractional part of time (encoder only)
+ int time_increment_bits;
+ int last_time_base;
+ int time_base; ///< time in seconds of last I,P,S Frame
+ int64_t time; ///< time of current frame
+ int64_t last_non_b_time;
+ uint16_t pp_time; ///< time distance between the last 2 p,s,i frames
+ uint16_t pb_time; ///< time distance between the last b and p,s,i frame
+ uint16_t pp_field_time;
+ uint16_t pb_field_time; ///< like above, just for interlaced
+ int mcsel;
+ int quant_precision;
+ int quarter_sample; ///< 1->qpel, 0->half pel ME/MC
+ int data_partitioning; ///< data partitioning flag from header
+ int partitioned_frame; ///< is current frame partitioned
+ int low_delay; ///< no reordering needed / has no B-frames
+ PutBitContext tex_pb; ///< used for data partitioned VOPs
+ PutBitContext pb2; ///< used for data partitioned VOPs
+ int mpeg_quant;
+ int padding_bug_score; ///< used to detect the VERY common padding bug in MPEG-4
+
+ /* divx specific, used to workaround (many) bugs in divx5 */
+ int divx_packed;
+ uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
+ int bitstream_buffer_size;
+ unsigned int allocated_bitstream_buffer_size;
+
+ /* RV10 specific */
+ int rv10_version; ///< RV10 version: 0 or 3
+ int rv10_first_dc_coded[3];
+
+ /* MJPEG specific */
+ struct MJpegContext *mjpeg_ctx;
+ int esc_pos;
+
+ /* MSMPEG4 specific */
+ int mv_table_index;
+ int rl_table_index;
+ int rl_chroma_table_index;
+ int dc_table_index;
+ int use_skip_mb_code;
+ int slice_height; ///< in macroblocks
+ int first_slice_line; ///< used in MPEG-4 too to handle resync markers
+ int flipflop_rounding;
+ int msmpeg4_version; ///< 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8
+ int per_mb_rl_table;
+ int esc3_level_length;
+ int esc3_run_length;
+ int inter_intra_pred;
+ int mspel;
+
+ /* decompression specific */
+ GetBitContext gb;
+
+ /* MPEG-1 specific */
+ int last_mv_dir; ///< last mv_dir, used for B-frame encoding
+ int vbv_delay_pos; ///< offset of vbv_delay in the bitstream
+
+ /* MPEG-2-specific - I wished not to have to support this mess. */
+ int progressive_sequence;
+ int mpeg_f_code[2][2];
+
+ // picture structure defines are loaded from mpegutils.h
+ int picture_structure;
+
+ int intra_dc_precision;
+ int frame_pred_frame_dct;
+ int top_field_first;
+ int concealment_motion_vectors;
+ int q_scale_type;
+ int brd_scale;
+ int intra_vlc_format;
+ int alternate_scan;
+ int repeat_first_field;
+ int chroma_420_type;
+ int chroma_format;
+#define CHROMA_420 1
+#define CHROMA_422 2
+#define CHROMA_444 3
+ int chroma_x_shift;//depend on pix_format, that depend on chroma_format
+ int chroma_y_shift;
+
+ int progressive_frame;
+ int full_pel[2];
+ int interlaced_dct;
+ int first_field; ///< is 1 for the first field of a field picture 0 otherwise
+
+ /* RTP specific */
+ int rtp_mode;
+ int rtp_payload_size;
+
+ uint8_t *ptr_lastgob;
+ int16_t (*pblocks[12])[64];
+
+ 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[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 */
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-27 16:31:22 +0000