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ffmpeg/libavcodec/mpegvideo.h
Michael Niedermayer 28db7fce02 slow but accurate integer dct from IJG (should be ok with the LGPL as the old DCT is the fast integer DCT from IJG) 
per context DCT selection

Originally committed as revision 878 to svn://svn.ffmpeg.org/ffmpeg/trunk
2002-08-29 23:55:32 +00:00

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/*
* Generic DCT based hybrid video encoder
* Copyright (c) 2000, 2001, 2002 Fabrice Bellard.
*
* This library 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 of the License, or (at your option) any later version.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef AVCODEC_MPEGVIDEO_H
#define AVCODEC_MPEGVIDEO_H
#define FRAME_SKIPED 100 // return value for header parsers if frame is not coded
enum OutputFormat {
FMT_MPEG1,
FMT_H263,
FMT_MJPEG,
};
#define MPEG_BUF_SIZE (16 * 1024)
#define QMAT_SHIFT_MMX 19
#define QMAT_SHIFT 25
#define MAX_FCODE 7
#define MAX_MV 2048
#define REORDER_BUFFER_SIZE (FF_MAX_B_FRAMES+2)
#define ME_MAP_SIZE 64
#define ME_MAP_SHIFT 3
#define ME_MAP_MV_BITS 11
/* run length table */
#define MAX_RUN 64
#define MAX_LEVEL 64
typedef struct Predictor{
double coeff;
double count;
double decay;
} Predictor;
typedef struct RateControlEntry{
int pict_type;
int qscale;
int mv_bits;
int i_tex_bits;
int p_tex_bits;
int misc_bits;
UINT64 expected_bits;
int new_pict_type;
float new_qscale;
int mc_mb_var_sum;
int mb_var_sum;
int i_count;
int f_code;
int b_code;
}RateControlEntry;
typedef struct RateControlContext{
FILE *stats_file;
int num_entries; /* number of RateControlEntries */
RateControlEntry *entry;
int buffer_index; /* amount of bits in the video/audio buffer */
Predictor pred[5];
double short_term_qsum; /* sum of recent qscales */
double short_term_qcount; /* count of recent qscales */
double pass1_bits; /* bits outputted by the pass1 code (including complexity init) */
double pass1_wanted_bits; /* bits which should have been outputed by the pass1 code (including complexity init) */
double last_qscale;
double last_qscale_for[5]; /* last qscale for a specific pict type */
double next_non_b_qscale;
double next_p_qscale;
int last_mc_mb_var_sum;
int last_mb_var_sum;
UINT64 i_cplx_sum[5];
UINT64 p_cplx_sum[5];
UINT64 mv_bits_sum[5];
UINT64 qscale_sum[5];
int frame_count[5];
}RateControlContext;
typedef struct ReorderBuffer{
UINT8 *picture[3];
int pict_type;
int qscale;
int force_type;
int picture_number;
int picture_in_gop_number;
} ReorderBuffer;
typedef struct MpegEncContext {
struct AVCodecContext *avctx;
/* the following parameters must be initialized before encoding */
int width, height; /* picture size. must be a multiple of 16 */
int gop_size;
int frame_rate; /* number of frames per second */
int intra_only; /* if true, only intra pictures are generated */
int bit_rate; /* wanted bit rate */
int bit_rate_tolerance; /* amount of +- bits (>0)*/
enum OutputFormat out_format; /* output format */
int h263_pred; /* use mpeg4/h263 ac/dc predictions */
/* the following codec id fields are deprecated in favor of codec_id */
int h263_plus; /* h263 plus headers */
int h263_rv10; /* use RV10 variation for H263 */
int h263_msmpeg4; /* generate MSMPEG4 compatible stream (deprecated, use msmpeg4_version instead)*/
int h263_intel; /* use I263 intel h263 header */
int codec_id; /* see CODEC_ID_xxx */
int fixed_qscale; /* fixed qscale if non zero */
float qcompress; /* amount of qscale change between easy & hard scenes (0.0-1.0) */
float qblur; /* amount of qscale smoothing over time (0.0-1.0) */
int qmin; /* min qscale */
int qmax; /* max qscale */
int max_qdiff; /* max qscale difference between frames */
int encoding; /* true if we are encoding (vs decoding) */
int flags; /* AVCodecContext.flags (HQ, MV4, ...) */
int force_input_type;/* 0= no force, otherwise I_TYPE, P_TYPE, ... */
int max_b_frames; /* max number of b-frames for encoding */
int b_frame_strategy;
int luma_elim_threshold;
int chroma_elim_threshold;
int strict_std_compliance; /* strictly follow the std (MPEG4, ...) */
int workaround_bugs; /* workaround bugs in encoders which cannot be detected automatically */
/* the following fields are managed internally by the encoder */
/* bit output */
PutBitContext pb;
/* sequence parameters */
int context_initialized;
int input_picture_number;
int input_picture_in_gop_number; /* 0-> first pic in gop, ... */
int picture_number;
int fake_picture_number; /* picture number at the bitstream frame rate */
int gop_picture_number; /* index of the first picture of a GOP based on fake_pic_num & mpeg1 specific */
int picture_in_gop_number; /* 0-> first pic in gop, ... */
int b_frames_since_non_b; /* used for encoding, relative to not yet reordered input */
int mb_width, mb_height; /* number of MBs horizontally & vertically */
int h_edge_pos, v_edge_pos;/* horizontal / vertical position of the right/bottom edge (pixel replicateion)*/
int mb_num; /* number of MBs of a picture */
int linesize; /* line size, in bytes, may be different from width */
int uvlinesize; /* line size, for chroma in bytes, may be different from width */
UINT8 *new_picture[3]; /* picture to be compressed */
UINT8 *picture_buffer[REORDER_BUFFER_SIZE][3]; /* internal buffers used for reordering of input pictures */
int picture_buffer_index;
ReorderBuffer coded_order[REORDER_BUFFER_SIZE];
UINT8 *last_picture[3]; /* previous picture */
UINT8 *last_picture_base[3]; /* real start of the picture */
UINT8 *next_picture[3]; /* previous picture (for bidir pred) */
UINT8 *next_picture_base[3]; /* real start of the picture */
UINT8 *aux_picture[3]; /* aux picture (for B frames only) */
UINT8 *aux_picture_base[3]; /* real start of the picture */
UINT8 *current_picture[3]; /* buffer to store the decompressed current picture */
void *last_dr_opaque;
void *next_dr_opaque;
int ip_buffer_count; /* number of buffers, currently only >2 if dr1 is used */
int num_available_buffers; /* is 0 at the start & after seeking, after the first I frame its 1 after next I/P 2 */
int last_dc[3]; /* last DC values for MPEG1 */
INT16 *dc_val[3]; /* used for mpeg4 DC prediction, all 3 arrays must be continuous */
int y_dc_scale, c_dc_scale;
UINT8 *y_dc_scale_table; /* qscale -> y_dc_scale table */
UINT8 *c_dc_scale_table; /* qscale -> c_dc_scale table */
UINT8 *coded_block; /* used for coded block pattern prediction (msmpeg4v3, wmv1)*/
INT16 (*ac_val[3])[16]; /* used for for mpeg4 AC prediction, all 3 arrays must be continuous */
int ac_pred;
int mb_skiped; /* MUST BE SET only during DECODING */
UINT8 *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 *mbintra_table; /* used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding */
UINT8 *cbp_table; /* used to store cbp, ac_pred for partitioned decoding */
UINT8 *pred_dir_table; /* used to store pred_dir for partitioned decoding */
INT8 *qscale_table; /* used to store qscale for partitioned decoding (& postprocessing FIXME export) */
UINT8 *edge_emu_buffer;
int input_qscale; /* qscale prior to reordering of frames */
int input_pict_type; /* pict_type prior to reordering of frames */
int force_type; /* 0= no force, otherwise I_TYPE, P_TYPE, ... */
int qscale; /* QP */
int pict_type; /* I_TYPE, P_TYPE, B_TYPE, ... */
int last_pict_type;
int last_non_b_pict_type; /* used for mpeg4 gmc b-frames & ratecontrol */
int frame_rate_index;
/* motion compensation */
int unrestricted_mv;
int h263_long_vectors; /* use horrible h263v1 long vector mode */
int f_code; /* forward MV resolution */
int b_code; /* backward MV resolution for B Frames (mpeg4) */
INT16 (*motion_val)[2]; /* used for MV prediction (4MV per MB) */
INT16 (*p_mv_table)[2]; /* MV table (1MV per MB) p-frame encoding */
INT16 (*b_forw_mv_table)[2]; /* MV table (1MV per MB) forward mode b-frame encoding */
INT16 (*b_back_mv_table)[2]; /* MV table (1MV per MB) backward mode b-frame encoding */
INT16 (*b_bidir_forw_mv_table)[2]; /* MV table (1MV per MB) bidir mode b-frame encoding */
INT16 (*b_bidir_back_mv_table)[2]; /* MV table (1MV per MB) bidir mode b-frame encoding */
INT16 (*b_direct_forw_mv_table)[2];/* MV table (1MV per MB) direct mode b-frame encoding */
INT16 (*b_direct_back_mv_table)[2];/* MV table (1MV per MB) direct mode b-frame encoding */
INT16 (*b_direct_mv_table)[2]; /* MV table (1MV per MB) direct mode b-frame encoding */
int me_method; /* ME algorithm */
uint8_t *me_scratchpad; /* data area for the me algo, so that the ME doesnt need to malloc/free */
uint32_t *me_map; /* map to avoid duplicate evaluations */
uint16_t *me_score_map; /* map to store the SADs */
int me_map_generation;
int skip_me; /* set if ME is skiped for the current MB */
int scene_change_score;
int mv_dir;
#define MV_DIR_BACKWARD 1
#define MV_DIR_FORWARD 2
#define MV_DIRECT 4 // bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4)
int mv_type;
#define MV_TYPE_16X16 0 /* 1 vector for the whole mb */
#define MV_TYPE_8X8 1 /* 4 vectors (h263, mpeg4 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 MPEG1 & B-frame MPEG4 */
UINT16 (*mv_penalty)[MAX_MV*2+1]; /* amount of bits needed to encode a MV, used for ME */
UINT8 *fcode_tab; /* smallest fcode needed for each MV */
int has_b_frames;
int no_rounding; /* apply no rounding to motion compensation (MPEG4, msmpeg4, ...)
for b-frames rounding mode is allways 0 */
int hurry_up; /* when set to 1 during decoding, b frames will be skiped
when set to 2 idct/dequant will be skipped too */
/* macroblock layer */
int mb_x, mb_y;
int mb_incr;
int mb_intra;
UINT16 *mb_var; /* Table for MB variances */
UINT16 *mc_mb_var; /* Table for motion compensated MB variances */
UINT8 *mb_type; /* Table for MB type */
#define MB_TYPE_INTRA 0x01
#define MB_TYPE_INTER 0x02
#define MB_TYPE_INTER4V 0x04
#define MB_TYPE_SKIPED 0x08
#define MB_TYPE_GMC 0x10
#define MB_TYPE_DIRECT 0x10
#define MB_TYPE_FORWARD 0x20
#define MB_TYPE_BACKWARD 0x40
#define MB_TYPE_BIDIR 0x80
int block_index[6]; /* index to current MB in block based arrays with edges*/
int block_wrap[6];
/* matrix transmitted in the bitstream */
UINT16 intra_matrix[64];
UINT16 chroma_intra_matrix[64];
UINT16 inter_matrix[64];
UINT16 chroma_inter_matrix[64];
#define QUANT_BIAS_SHIFT 4
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 */
/* precomputed matrix (combine qscale and DCT renorm) */
int q_intra_matrix[32][64];
int q_inter_matrix[32][64];
/* identical to the above but for MMX & these are not permutated */
UINT16 __align8 q_intra_matrix16[32][64];
UINT16 __align8 q_inter_matrix16[32][64];
UINT16 __align8 q_intra_matrix16_bias[32][64];
UINT16 __align8 q_inter_matrix16_bias[32][64];
int block_last_index[6]; /* last non zero coefficient in block */
void *opaque; /* private data for the user */
/* bit rate control */
int I_frame_bits; //FIXME used in mpeg12 ...
int mb_var_sum; /* sum of MB variance for current frame */
int mc_mb_var_sum; /* motion compensated MB variance for current frame */
INT64 wanted_bits;
INT64 total_bits;
int frame_bits; /* bits used for the current 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 p_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 */
int mb_num_left; /* number of MBs left in this video packet */
GetBitContext next_resync_gb; /* starts at the next resync marker */
int next_resync_qscale; /* qscale of next resync marker */
int next_resync_pos; /* bitstream position of next resync marker */
#define DECODING_AC_LOST -1
#define DECODING_ACDC_LOST -2
#define DECODING_DESYNC -3
int decoding_error;
int next_p_frame_damaged; /* set if the next p frame is damaged, to avoid showing trashed b frames */
int error_resilience;
/* H.263 specific */
int gob_number;
int gob_index;
/* H.263+ specific */
int umvplus;
int umvplus_dec;
int h263_aic; /* Advanded INTRA Coding (AIC) */
int h263_aic_dir; /* AIC direction: 0 = left, 1 = top */
/* mpeg4 specific */
int time_increment_resolution;
int time_increment_bits; /* number of bits to represent the fractional part of time */
int last_time_base;
int time_base; /* time in seconds of last I,P,S Frame */
INT64 time; /* time of current frame */
INT64 last_non_b_time;
UINT16 pp_time; /* time distance between the last 2 p,s,i frames */
UINT16 bp_time; /* time distance between the last b and p,s,i frame */
int shape;
int vol_sprite_usage;
int sprite_width;
int sprite_height;
int sprite_left;
int sprite_top;
int sprite_brightness_change;
int num_sprite_warping_points;
int real_sprite_warping_points;
int sprite_offset[2][2];
int sprite_delta[2][2][2];
int sprite_shift[2][2];
int mcsel;
int quant_precision;
int quarter_sample; /* 1->qpel, 0->half pel ME/MC */
int scalability;
int hierachy_type;
int enhancement_type;
int new_pred;
int reduced_res_vop;
int aspect_ratio_info;
int aspected_width;
int aspected_height;
int sprite_warping_accuracy;
int low_latency_sprite;
int data_partitioning;
int rvlc; /* reversible vlc */
int resync_marker; /* could this stream contain resync markers*/
int low_delay; /* no reordering needed / has no b-frames */
int vo_type;
int vol_control_parameters; /* does the stream contain the low_delay flag, used to workaround buggy encoders */
PutBitContext tex_pb; /* used for data partitioned VOPs */
PutBitContext pb2; /* used for data partitioned VOPs */
#define PB_BUFFER_SIZE 1024*256
uint8_t *tex_pb_buffer;
uint8_t *pb2_buffer;
int mpeg_quant;
INT8 *non_b_mv4_table;
/* divx specific, used to workaround (many) bugs in divx5 */
int divx_version;
int divx_build;
#define BITSTREAM_BUFFER_SIZE 1024*256
UINT8 *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
int 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 mjpeg_vsample[3]; /* vertical sampling factors, default = {2, 1, 1} */
int mjpeg_hsample[3]; /* horizontal sampling factors, default = {2, 1, 1} */
int mjpeg_write_tables; /* do we want to have quantisation- and
huffmantables in the jpeg file ? */
int mjpeg_data_only_frames; /* frames only with SOI, SOS and EOI markers */
/* MSMPEG4 specific */
int mv_table_index;
int rl_table_index;
int rl_chroma_table_index;
int dc_table_index;
int use_skip_mb_code;
int slice_height; /* in macroblocks */
int first_slice_line; /* used in mpeg4 too to handle resync markers */
int flipflop_rounding;
int msmpeg4_version; /* 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8*/
int per_mb_rl_table;
int esc3_level_length;
int esc3_run_length;
UINT8 *inter_scantable;
UINT8 *intra_scantable;
UINT8 *intra_v_scantable;
UINT8 *intra_h_scantable;
/* [mb_intra][isChroma][level][run][last] */
int ac_stats[2][2][MAX_LEVEL+1][MAX_RUN+1][2];
int inter_intra_pred;
/* decompression specific */
GetBitContext gb;
/* MPEG2 specific - I wish I had not 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 progressive_frame;
int mpeg2;
int full_pel[2];
int interlaced_dct;
int last_qscale;
int first_slice;
/* RTP specific */
/* These are explained on avcodec.h */
int rtp_mode;
int rtp_payload_size;
void (*rtp_callback)(void *data, int size, int packet_number);
UINT8 *ptr_lastgob;
UINT8 *ptr_last_mb_line;
UINT32 mb_line_avgsize;
DCTELEM (*block)[64]; /* points to one of the following blocks */
DCTELEM blocks[2][6][64] __align8; // for HQ mode we need to keep the best block
void (*dct_unquantize_mpeg1)(struct MpegEncContext *s,
DCTELEM *block, int n, int qscale);
void (*dct_unquantize_mpeg2)(struct MpegEncContext *s,
DCTELEM *block, int n, int qscale);
void (*dct_unquantize_h263)(struct MpegEncContext *s,
DCTELEM *block, int n, int qscale);
void (*dct_unquantize)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
DCTELEM *block, int n, int qscale);
int (*dct_quantize)(struct MpegEncContext *s, DCTELEM *block, int n, int qscale, int *overflow);
void (*fdct)(DCTELEM *block);
} MpegEncContext;
int MPV_common_init(MpegEncContext *s);
void MPV_common_end(MpegEncContext *s);
void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64]);
void MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx);
void MPV_frame_end(MpegEncContext *s);
#ifdef HAVE_MMX
void MPV_common_init_mmx(MpegEncContext *s);
#endif
#ifdef ARCH_ALPHA
void MPV_common_init_axp(MpegEncContext *s);
#endif
extern void (*draw_edges)(UINT8 *buf, int wrap, int width, int height, int w);
void ff_conceal_past_errors(MpegEncContext *s, int conceal_all);
void ff_copy_bits(PutBitContext *pb, UINT8 *src, int length);
void ff_clean_intra_table_entries(MpegEncContext *s);
/* motion_est.c */
void ff_estimate_p_frame_motion(MpegEncContext * s,
int mb_x, int mb_y);
void ff_estimate_b_frame_motion(MpegEncContext * s,
int mb_x, int mb_y);
int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type);
void ff_fix_long_p_mvs(MpegEncContext * s);
void ff_fix_long_b_mvs(MpegEncContext * s, int16_t (*mv_table)[2], int f_code, int type);
/* mpeg12.c */
extern INT16 ff_mpeg1_default_intra_matrix[64];
extern INT16 ff_mpeg1_default_non_intra_matrix[64];
extern UINT8 ff_mpeg1_dc_scale_table[128];
void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
void mpeg1_encode_mb(MpegEncContext *s,
DCTELEM block[6][64],
int motion_x, int motion_y);
void ff_mpeg1_encode_init(MpegEncContext *s);
/* h263enc.c */
typedef struct RLTable {
int n; /* number of entries of table_vlc minus 1 */
int last; /* number of values for last = 0 */
const UINT16 (*table_vlc)[2];
const INT8 *table_run;
const INT8 *table_level;
UINT8 *index_run[2]; /* encoding only */
INT8 *max_level[2]; /* encoding & decoding */
INT8 *max_run[2]; /* encoding & decoding */
VLC vlc; /* decoding only deprected FIXME remove*/
RL_VLC_ELEM *rl_vlc[32]; /* decoding only */
} RLTable;
void init_rl(RLTable *rl);
void init_vlc_rl(RLTable *rl);
static inline int get_rl_index(const RLTable *rl, int last, int run, int level)
{
int index;
index = rl->index_run[last][run];
if (index >= rl->n)
return rl->n;
if (level > rl->max_level[last][run])
return rl->n;
return index + level - 1;
}
extern UINT8 ff_mpeg4_y_dc_scale_table[32];
extern UINT8 ff_mpeg4_c_dc_scale_table[32];
extern INT16 ff_mpeg4_default_intra_matrix[64];
extern INT16 ff_mpeg4_default_non_intra_matrix[64];
void h263_encode_mb(MpegEncContext *s,
DCTELEM block[6][64],
int motion_x, int motion_y);
void mpeg4_encode_mb(MpegEncContext *s,
DCTELEM block[6][64],
int motion_x, int motion_y);
void h263_encode_picture_header(MpegEncContext *s, int picture_number);
int h263_encode_gob_header(MpegEncContext * s, int mb_line);
INT16 *h263_pred_motion(MpegEncContext * s, int block,
int *px, int *py);
void mpeg4_pred_ac(MpegEncContext * s, INT16 *block, int n,
int dir);
void ff_set_mpeg4_time(MpegEncContext * s, int picture_number);
void mpeg4_encode_picture_header(MpegEncContext *s, int picture_number);
void h263_encode_init(MpegEncContext *s);
void h263_decode_init_vlc(MpegEncContext *s);
int h263_decode_picture_header(MpegEncContext *s);
int h263_decode_gob_header(MpegEncContext *s);
int mpeg4_decode_picture_header(MpegEncContext * s);
int intel_h263_decode_picture_header(MpegEncContext *s);
int h263_decode_mb(MpegEncContext *s,
DCTELEM block[6][64]);
int h263_get_picture_format(int width, int height);
int ff_mpeg4_decode_video_packet_header(MpegEncContext *s);
int ff_mpeg4_resync(MpegEncContext *s);
void ff_mpeg4_encode_video_packet_header(MpegEncContext *s);
void ff_mpeg4_clean_buffers(MpegEncContext *s);
void ff_mpeg4_stuffing(PutBitContext * pbc);
void ff_mpeg4_init_partitions(MpegEncContext *s);
void ff_mpeg4_merge_partitions(MpegEncContext *s);
extern inline int ff_mpeg4_pred_dc(MpegEncContext * s, int n, UINT16 **dc_val_ptr, int *dir_ptr);
/* rv10.c */
void rv10_encode_picture_header(MpegEncContext *s, int picture_number);
int rv_decode_dc(MpegEncContext *s, int n);
/* msmpeg4.c */
void msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number);
void msmpeg4_encode_ext_header(MpegEncContext * s);
void msmpeg4_encode_mb(MpegEncContext * s,
DCTELEM block[6][64],
int motion_x, int motion_y);
int msmpeg4_decode_picture_header(MpegEncContext * s);
int msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
int msmpeg4_decode_mb(MpegEncContext *s,
DCTELEM block[6][64]);
int ff_msmpeg4_decode_init(MpegEncContext *s);
void ff_msmpeg4_encode_init(MpegEncContext *s);
/* mjpegenc.c */
int mjpeg_init(MpegEncContext *s);
void mjpeg_close(MpegEncContext *s);
void mjpeg_encode_mb(MpegEncContext *s,
DCTELEM block[6][64]);
void mjpeg_picture_header(MpegEncContext *s);
void mjpeg_picture_trailer(MpegEncContext *s);
/* rate control */
int ff_rate_control_init(MpegEncContext *s);
int ff_rate_estimate_qscale(MpegEncContext *s);
int ff_rate_estimate_qscale_pass2(MpegEncContext *s);
void ff_write_pass1_stats(MpegEncContext *s);
void ff_rate_control_uninit(MpegEncContext *s);
double ff_eval(char *s, double *const_value, char **const_name,
double (**func1)(void *, double), char **func1_name,
double (**func2)(void *, double, double), char **func2_name,
void *opaque);
#endif /* AVCODEC_MPEGVIDEO_H */
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