interlaced motion estimation
[libav.git] / libavcodec / mpegvideo.h
CommitLineData
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1/*
2 * Generic DCT based hybrid video encoder
ff4ec49e 3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard.
de6d9b64 4 *
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5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
de6d9b64 9 *
ff4ec49e 10 * This library is distributed in the hope that it will be useful,
de6d9b64 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
de6d9b64 14 *
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15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18 */
19
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20/**
21 * @file mpegvideo.h
22 * mpegvideo header.
23 */
24
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25#ifndef AVCODEC_MPEGVIDEO_H
26#define AVCODEC_MPEGVIDEO_H
27
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28#include "dsputil.h"
29
277f4827 30#define FRAME_SKIPED 100 ///< return value for header parsers if frame is not coded
eec1c6b9 31
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32enum OutputFormat {
33 FMT_MPEG1,
34 FMT_H263,
9dbcbd92 35 FMT_MJPEG,
0da71265 36 FMT_H264,
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37};
38
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39#define EDGE_WIDTH 16
40
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41#define MPEG_BUF_SIZE (16 * 1024)
42
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43#define QMAT_SHIFT_MMX 16
44#define QMAT_SHIFT 22
2f349de2 45
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46#define MAX_FCODE 7
47#define MAX_MV 2048
1e491e29 48
0d1e9246 49#define MAX_PICTURE_COUNT 15
45870f57 50
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51#define ME_MAP_SIZE 64
52#define ME_MAP_SHIFT 3
53#define ME_MAP_MV_BITS 11
54
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55/* run length table */
56#define MAX_RUN 64
57#define MAX_LEVEL 64
58
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59#define I_TYPE FF_I_TYPE ///< Intra
60#define P_TYPE FF_P_TYPE ///< Predicted
61#define B_TYPE FF_B_TYPE ///< Bi-dir predicted
62#define S_TYPE FF_S_TYPE ///< S(GMC)-VOP MPEG4
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63#define SI_TYPE FF_SI_TYPE ///< Switching Intra
64#define SP_TYPE FF_SP_TYPE ///< Switching Predicted
140cb663 65
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66typedef struct Predictor{
67 double coeff;
68 double count;
69 double decay;
70} Predictor;
71
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72typedef struct RateControlEntry{
73 int pict_type;
c5d309f2 74 float qscale;
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75 int mv_bits;
76 int i_tex_bits;
77 int p_tex_bits;
78 int misc_bits;
0c1a9eda 79 uint64_t expected_bits;
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80 int new_pict_type;
81 float new_qscale;
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82 int mc_mb_var_sum;
83 int mb_var_sum;
84 int i_count;
85 int f_code;
86 int b_code;
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87}RateControlEntry;
88
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89/**
90 * rate control context.
91 */
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92typedef struct RateControlContext{
93 FILE *stats_file;
277f4827 94 int num_entries; ///< number of RateControlEntries
8b4c7dbc 95 RateControlEntry *entry;
fb066639 96 double buffer_index; ///< amount of bits in the video/audio buffer
3aa102be 97 Predictor pred[5];
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98 double short_term_qsum; ///< sum of recent qscales
99 double short_term_qcount; ///< count of recent qscales
100 double pass1_rc_eq_output_sum;///< sum of the output of the rc equation, this is used for normalization
101 double pass1_wanted_bits; ///< bits which should have been outputed by the pass1 code (including complexity init)
3aa102be 102 double last_qscale;
277f4827 103 double last_qscale_for[5]; ///< last qscale for a specific pict type, used for max_diff & ipb factor stuff
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104 int last_mc_mb_var_sum;
105 int last_mb_var_sum;
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106 uint64_t i_cplx_sum[5];
107 uint64_t p_cplx_sum[5];
108 uint64_t mv_bits_sum[5];
109 uint64_t qscale_sum[5];
3aa102be 110 int frame_count[5];
947ac25a 111 int last_non_b_pict_type;
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112}RateControlContext;
113
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114/**
115 * Scantable.
116 */
2ad1516a 117typedef struct ScanTable{
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118 const uint8_t *scantable;
119 uint8_t permutated[64];
120 uint8_t raster_end[64];
05c4072b 121#ifdef ARCH_POWERPC
277f4827 122 /** Used by dct_quantise_alitvec to find last-non-zero */
0c1a9eda 123 uint8_t __align8 inverse[64];
05c4072b 124#endif
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125} ScanTable;
126
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127/**
128 * Picture.
129 */
1e491e29 130typedef struct Picture{
492cd3a9 131 FF_COMMON_FRAME
1e491e29 132
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133 /**
134 * halfpel luma planes.
135 */
136 uint8_t *interpolated[3];
b40cd4e0 137 int16_t (*motion_val_base[2])[2];
0da71265 138 int8_t *ref_index[2];
7bc9090a 139 uint32_t *mb_type_base;
bb198e19 140#define MB_TYPE_INTRA MB_TYPE_INTRA4x4 //default mb_type if theres just one type
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141#define IS_INTRA4x4(a) ((a)&MB_TYPE_INTRA4x4)
142#define IS_INTRA16x16(a) ((a)&MB_TYPE_INTRA16x16)
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143#define IS_PCM(a) ((a)&MB_TYPE_INTRA_PCM)
144#define IS_INTRA(a) ((a)&7)
0da71265 145#define IS_INTER(a) ((a)&(MB_TYPE_16x16|MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8))
7bc9090a 146#define IS_SKIP(a) ((a)&MB_TYPE_SKIP)
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147#define IS_INTRA_PCM(a) ((a)&MB_TYPE_INTRA_PCM)
148#define IS_INTERLACED(a) ((a)&MB_TYPE_INTERLACED)
149#define IS_DIRECT(a) ((a)&MB_TYPE_DIRECT2)
7bc9090a 150#define IS_GMC(a) ((a)&MB_TYPE_GMC)
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151#define IS_16X16(a) ((a)&MB_TYPE_16x16)
152#define IS_16X8(a) ((a)&MB_TYPE_16x8)
153#define IS_8X16(a) ((a)&MB_TYPE_8x16)
154#define IS_8X8(a) ((a)&MB_TYPE_8x8)
155#define IS_SUB_8X8(a) ((a)&MB_TYPE_16x16) //note reused
156#define IS_SUB_8X4(a) ((a)&MB_TYPE_16x8) //note reused
157#define IS_SUB_4X8(a) ((a)&MB_TYPE_8x16) //note reused
158#define IS_SUB_4X4(a) ((a)&MB_TYPE_8x8) //note reused
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159#define IS_ACPRED(a) ((a)&MB_TYPE_ACPRED)
160#define IS_QUANT(a) ((a)&MB_TYPE_QUANT)
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161#define IS_DIR(a, part, list) ((a) & (MB_TYPE_P0L0<<((part)+2*(list))))
162#define USES_LIST(a, list) ((a) & ((MB_TYPE_P0L0|MB_TYPE_P1L0)<<(2*(list)))) ///< does this mb use listX, note doesnt work if subMBs
b40cd4e0 163#define HAS_CBP(a) ((a)&MB_TYPE_CBP)
0da71265 164
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165 int field_poc[2]; ///< h264 top/bottom POC
166 int poc; ///< h264 frame POC
167 int frame_num; ///< h264 frame_num
168 int pic_id; ///< h264 pic_num or long_term_pic_idx
169 int long_ref; ///< 1->long term reference 0->short term reference
170
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171 int mb_var_sum; ///< sum of MB variance for current frame
172 int mc_mb_var_sum; ///< motion compensated MB variance for current frame
173 uint16_t *mb_var; ///< Table for MB variances
174 uint16_t *mc_mb_var; ///< Table for motion compensated MB variances
175 uint8_t *mb_mean; ///< Table for MB luminance
8fc7c993 176 int32_t *mb_cmp_score; ///< Table for MB cmp scores, for mb decission FIXME remove
0d1e9246 177 int b_frame_score; /* */
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178} Picture;
179
d7425f59 180typedef struct ParseContext{
0c1a9eda 181 uint8_t *buffer;
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182 int index;
183 int last_index;
184 int buffer_size;
bb463d81 185 uint32_t state; ///< contains the last few bytes in MSB order
d7425f59 186 int frame_start_found;
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187 int overread; ///< the number of bytes which where irreversibly read from the next frame
188 int overread_index; ///< the index into ParseContext.buffer of the overreaded bytes
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189} ParseContext;
190
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191struct MpegEncContext;
192
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193/**
194 * Motion estimation context.
195 */
1457ab52 196typedef struct MotionEstContext{
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197 int skip; ///< set if ME is skiped for the current MB
198 int co_located_mv[4][2]; ///< mv from last p frame for direct mode ME
1457ab52 199 int direct_basis_mv[4][2];
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200 uint8_t *scratchpad; ///< data area for the me algo, so that the ME doesnt need to malloc/free
201 uint32_t *map; ///< map to avoid duplicate evaluations
202 uint32_t *score_map; ///< map to store the scores
1457ab52 203 int map_generation;
826f429a 204 int pre_penalty_factor;
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205 int penalty_factor;
206 int sub_penalty_factor;
67725183 207 int mb_penalty_factor;
277f4827 208 int pre_pass; ///< = 1 for the pre pass
826f429a 209 int dia_size;
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210 int xmin;
211 int xmax;
212 int ymin;
213 int ymax;
30952237 214 uint8_t (*mv_penalty)[MAX_MV*2+1]; ///< amount of bits needed to encode a MV
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215 int (*sub_motion_search)(struct MpegEncContext * s,
216 int *mx_ptr, int *my_ptr, int dmin,
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217 int pred_x, int pred_y, uint8_t *src_data[3],
218 uint8_t *ref_data[6], int stride, int uvstride,
219 int size, int h, uint8_t * const mv_penalty);
220 int (*motion_search[7])(struct MpegEncContext * s,
1457ab52 221 int *mx_ptr, int *my_ptr,
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222 int P[10][2], int pred_x, int pred_y, uint8_t *src_data[3],
223 uint8_t *ref_data[6], int stride, int uvstride, int16_t (*last_mv)[2],
30952237 224 int ref_mv_scale, uint8_t * const mv_penalty);
bb198e19 225 int (*pre_motion_search)(struct MpegEncContext * s,
826f429a 226 int *mx_ptr, int *my_ptr,
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227 int P[10][2], int pred_x, int pred_y, uint8_t *src_data[3],
228 uint8_t *ref_data[6], int stride, int uvstride, int16_t (*last_mv)[2],
30952237 229 int ref_mv_scale, uint8_t * const mv_penalty);
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230 int (*get_mb_score)(struct MpegEncContext * s, int mx, int my, int pred_x, int pred_y, uint8_t *src_data[3],
231 uint8_t *ref_data[6], int stride, int uvstride,
30952237 232 uint8_t * const mv_penalty);
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233}MotionEstContext;
234
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235/**
236 * MpegEncContext.
237 */
de6d9b64 238typedef struct MpegEncContext {
58f26ba9 239 struct AVCodecContext *avctx;
de6d9b64 240 /* the following parameters must be initialized before encoding */
277f4827 241 int width, height;///< picture size. must be a multiple of 16
de6d9b64 242 int gop_size;
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243 int intra_only; ///< if true, only intra pictures are generated
244 int bit_rate; ///< wanted bit rate
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245 enum OutputFormat out_format; ///< output format
246 int h263_pred; ///< use mpeg4/h263 ac/dc predictions
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247
248/* the following codec id fields are deprecated in favor of codec_id */
277f4827 249 int h263_plus; ///< h263 plus headers
277f4827 250 int h263_msmpeg4; ///< generate MSMPEG4 compatible stream (deprecated, use msmpeg4_version instead)
d4f5d74a 251 int h263_flv; ///< use flv h263 header
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252
253 int codec_id; /* see CODEC_ID_xxx */
277f4827 254 int fixed_qscale; ///< fixed qscale if non zero
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255 int encoding; ///< true if we are encoding (vs decoding)
256 int flags; ///< AVCodecContext.flags (HQ, MV4, ...)
257 int max_b_frames; ///< max number of b-frames for encoding
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258 int luma_elim_threshold;
259 int chroma_elim_threshold;
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260 int strict_std_compliance; ///< strictly follow the std (MPEG4, ...)
261 int workaround_bugs; ///< workaround bugs in encoders which cannot be detected automatically
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262 /* the following fields are managed internally by the encoder */
263
277f4827 264 /** bit output */
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265 PutBitContext pb;
266
267 /* sequence parameters */
268 int context_initialized;
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269 int input_picture_number; ///< used to set pic->display_picture_number, shouldnt be used for/by anything else
270 int coded_picture_number; ///< used to set pic->coded_picture_number, shouldnt be used for/by anything else
271 int picture_number; //FIXME remove, unclear definition
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272 int picture_in_gop_number; ///< 0-> first pic in gop, ...
273 int b_frames_since_non_b; ///< used for encoding, relative to not yet reordered input
274 int mb_width, mb_height; ///< number of MBs horizontally & vertically
7bc9090a 275 int mb_stride; ///< mb_width+1 used for some arrays to allow simple addressng of left & top MBs withoutt sig11
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276 int b8_stride; ///< 2*mb_width+1 used for some 8x8 block arrays to allow simple addressng
277 int b4_stride; ///< 4*mb_width+1 used for some 4x4 block arrays to allow simple addressng
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278 int h_edge_pos, v_edge_pos;///< horizontal / vertical position of the right/bottom edge (pixel replicateion)
279 int mb_num; ///< number of MBs of a picture
280 int linesize; ///< line size, in bytes, may be different from width
281 int uvlinesize; ///< line size, for chroma in bytes, may be different from width
b465449e 282 Picture *picture; ///< main picture buffer
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283 Picture **input_picture; ///< next pictures on display order for encoding
284 Picture **reordered_input_picture; ///< pointer to the next pictures in codedorder for encoding
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285
286 /**
287 * copy of the previous picture structure.
288 * note, linesize & data, might not match the previous picture (for field pictures)
289 */
290 Picture last_picture;
291
292 /**
293 * copy of the next picture structure.
294 * note, linesize & data, might not match the next picture (for field pictures)
295 */
296 Picture next_picture;
297
298 /**
299 * copy of the source picture structure for encoding.
300 * note, linesize & data, might not match the source picture (for field pictures)
301 */
302 Picture new_picture;
303
304 /**
305 * copy of the current picture structure.
306 * note, linesize & data, might not match the current picture (for field pictures)
307 */
277f4827 308 Picture current_picture; ///< buffer to store the decompressed current picture
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309
310 Picture *last_picture_ptr; ///< pointer to the previous picture.
311 Picture *next_picture_ptr; ///< pointer to the next picture (for bidir pred)
b536d0aa 312 Picture *current_picture_ptr; ///< pointer to the current picture
0c9bbaec 313 uint8_t *visualization_buffer[3]; //< temporary buffer vor MV visualization
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314 int last_dc[3]; ///< last DC values for MPEG1
315 int16_t *dc_val[3]; ///< used for mpeg4 DC prediction, all 3 arrays must be continuous
0da71265 316 int16_t dc_cache[4*5];
de6d9b64 317 int y_dc_scale, c_dc_scale;
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318 uint8_t *y_dc_scale_table; ///< qscale -> y_dc_scale table
319 uint8_t *c_dc_scale_table; ///< qscale -> c_dc_scale table
332f9ac4 320 const uint8_t *chroma_qscale_table; ///< qscale -> chroma_qscale (h263)
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321 uint8_t *coded_block; ///< used for coded block pattern prediction (msmpeg4v3, wmv1)
322 int16_t (*ac_val[3])[16]; ///< used for for mpeg4 AC prediction, all 3 arrays must be continuous
de6d9b64 323 int ac_pred;
277f4827 324 uint8_t *prev_pict_types; ///< previous picture types in bitstream order, used for mb skip
f943e138 325#define PREV_PICT_TYPES_BUFFER_SIZE 256
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326 int mb_skiped; ///< MUST BE SET only during DECODING
327 uint8_t *mbskip_table; /**< used to avoid copy if macroblock skipped (for black regions for example)
9dbcbd92 328 and used for b-frame encoding & decoding (contains skip table of next P Frame) */
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329 uint8_t *mbintra_table; ///< used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
330 uint8_t *cbp_table; ///< used to store cbp, ac_pred for partitioned decoding
331 uint8_t *pred_dir_table; ///< used to store pred_dir for partitioned decoding
f7b47594 332 uint8_t *allocated_edge_emu_buffer;
277f4827 333 uint8_t *edge_emu_buffer; ///< points into the middle of allocated_edge_emu_buffer
de6d9b64 334
277f4827 335 int qscale; ///< QP
332f9ac4 336 int chroma_qscale; ///< chroma QP
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337 int lambda; ///< lagrange multipler used in rate distortion
338 int lambda2; ///< (lambda*lambda) >> FF_LAMBDA_SHIFT
339 int *lambda_table;
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340 int adaptive_quant; ///< use adaptive quantization
341 int dquant; ///< qscale difference to prev qscale
342 int pict_type; ///< I_TYPE, P_TYPE, B_TYPE, ...
3aa102be 343 int last_pict_type;
277f4827 344 int last_non_b_pict_type; ///< used for mpeg4 gmc b-frames & ratecontrol
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345 int frame_rate_index;
346 /* motion compensation */
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347 int unrestricted_mv; ///< mv can point outside of the coded picture
348 int h263_long_vectors; ///< use horrible h263v1 long vector mode
0da71265 349 int decode; ///< if 0 then decoding will be skiped (for encoding b frames for example)
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350
351 DSPContext dsp; ///< pointers for accelerated dsp fucntions
352 int f_code; ///< forward MV resolution
353 int b_code; ///< backward MV resolution for B Frames (mpeg4)
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354 int16_t (*p_mv_table_base)[2];
355 int16_t (*b_forw_mv_table_base)[2];
356 int16_t (*b_back_mv_table_base)[2];
357 int16_t (*b_bidir_forw_mv_table_base)[2];
358 int16_t (*b_bidir_back_mv_table_base)[2];
359 int16_t (*b_direct_mv_table_base)[2];
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360 int16_t (*p_field_mv_table_base[2][2])[2];
361 int16_t (*b_field_mv_table_base[2][2][2])[2];
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362 int16_t (*p_mv_table)[2]; ///< MV table (1MV per MB) p-frame encoding
363 int16_t (*b_forw_mv_table)[2]; ///< MV table (1MV per MB) forward mode b-frame encoding
364 int16_t (*b_back_mv_table)[2]; ///< MV table (1MV per MB) backward mode b-frame encoding
365 int16_t (*b_bidir_forw_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
366 int16_t (*b_bidir_back_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
367 int16_t (*b_direct_mv_table)[2]; ///< MV table (1MV per MB) direct mode b-frame encoding
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368 int16_t (*p_field_mv_table[2][2])[2]; ///< MV table (2MV per MB) interlaced p-frame encoding
369 int16_t (*b_field_mv_table[2][2][2])[2];///< MV table (4MV per MB) interlaced b-frame encoding
370 uint8_t (*p_field_select_table[2]);
371 uint8_t (*b_field_select_table[2][2]);
277f4827 372 int me_method; ///< ME algorithm
1fb4890b 373 int scene_change_score;
de6d9b64 374 int mv_dir;
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375#define MV_DIR_BACKWARD 1
376#define MV_DIR_FORWARD 2
277f4827 377#define MV_DIRECT 4 ///< bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4)
de6d9b64 378 int mv_type;
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379#define MV_TYPE_16X16 0 ///< 1 vector for the whole mb
380#define MV_TYPE_8X8 1 ///< 4 vectors (h263, mpeg4 4MV)
381#define MV_TYPE_16X8 2 ///< 2 vectors, one per 16x8 block
382#define MV_TYPE_FIELD 3 ///< 2 vectors, one per field
383#define MV_TYPE_DMV 4 ///< 2 vectors, special mpeg2 Dual Prime Vectors
384 /**motion vectors for a macroblock
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385 first coordinate : 0 = forward 1 = backward
386 second " : depend on type
387 third " : 0 = x, 1 = y
388 */
389 int mv[2][4][2];
390 int field_select[2][2];
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391 int last_mv[2][2][2]; ///< last MV, used for MV prediction in MPEG1 & B-frame MPEG4
392 uint8_t *fcode_tab; ///< smallest fcode needed for each MV
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393
394 MotionEstContext me;
de6d9b64 395
277f4827 396 int no_rounding; /**< apply no rounding to motion compensation (MPEG4, msmpeg4, ...)
91029be7 397 for b-frames rounding mode is allways 0 */
de6d9b64 398
277f4827 399 int hurry_up; /**< when set to 1 during decoding, b frames will be skiped
2417652e 400 when set to 2 idct/dequant will be skipped too */
c5d309f2 401
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402 /* macroblock layer */
403 int mb_x, mb_y;
9b8709d1 404 int mb_skip_run;
de6d9b64 405 int mb_intra;
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406 uint16_t *mb_type; ///< Table for candidate MB types for encoding
407#define CANDIDATE_MB_TYPE_INTRA 0x01
408#define CANDIDATE_MB_TYPE_INTER 0x02
409#define CANDIDATE_MB_TYPE_INTER4V 0x04
410#define CANDIDATE_MB_TYPE_SKIPED 0x08
7bc9090a 411//#define MB_TYPE_GMC 0x10
7f2fe444 412
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413#define CANDIDATE_MB_TYPE_DIRECT 0x10
414#define CANDIDATE_MB_TYPE_FORWARD 0x20
415#define CANDIDATE_MB_TYPE_BACKWARD 0x40
416#define CANDIDATE_MB_TYPE_BIDIR 0x80
417
418#define CANDIDATE_MB_TYPE_INTER_I 0x100
419#define CANDIDATE_MB_TYPE_FORWARD_I 0x200
420#define CANDIDATE_MB_TYPE_BACKWARD_I 0x400
421#define CANDIDATE_MB_TYPE_BIDIR_I 0x800
4278e7a6 422
277f4827 423 int block_index[6]; ///< index to current MB in block based arrays with edges
4278e7a6 424 int block_wrap[6];
7d1c3fc1 425 uint8_t *dest[3];
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426
427 int *mb_index2xy; ///< mb_index -> mb_x + mb_y*mb_stride
4278e7a6 428
277f4827 429 /** matrix transmitted in the bitstream */
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430 uint16_t intra_matrix[64];
431 uint16_t chroma_intra_matrix[64];
432 uint16_t inter_matrix[64];
433 uint16_t chroma_inter_matrix[64];
1984f635 434#define QUANT_BIAS_SHIFT 8
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435 int intra_quant_bias; ///< bias for the quantizer
436 int inter_quant_bias; ///< bias for the quantizer
437 int min_qcoeff; ///< minimum encodable coefficient
438 int max_qcoeff; ///< maximum encodable coefficient
439 int ac_esc_length; ///< num of bits needed to encode the longest esc
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440 uint8_t *intra_ac_vlc_length;
441 uint8_t *intra_ac_vlc_last_length;
442 uint8_t *inter_ac_vlc_length;
443 uint8_t *inter_ac_vlc_last_length;
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444 uint8_t *luma_dc_vlc_length;
445 uint8_t *chroma_dc_vlc_length;
c442d75c 446#define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level))
477ab036 447
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448 int coded_score[6];
449
277f4827 450 /** precomputed matrix (combine qscale and DCT renorm) */
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451 int (*q_intra_matrix)[64];
452 int (*q_inter_matrix)[64];
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453 /** identical to the above but for MMX & these are not permutated, second 64 entries are bias*/
454 uint16_t (*q_intra_matrix16)[2][64];
455 uint16_t (*q_inter_matrix16)[2][64];
277f4827 456 int block_last_index[6]; ///< last non zero coefficient in block
2ad1516a 457 /* scantables */
05c4072b 458 ScanTable __align8 intra_scantable;
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459 ScanTable intra_h_scantable;
460 ScanTable intra_v_scantable;
277f4827 461 ScanTable inter_scantable; ///< if inter == intra then intra should be used to reduce tha cache usage
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462
463 /* noise reduction */
464 int (*dct_error_sum)[64];
465 int dct_count[2];
466 uint16_t (*dct_offset)[64];
de6d9b64 467
277f4827 468 void *opaque; ///< private data for the user
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469
470 /* bit rate control */
9dbcbd92 471 int I_frame_bits; //FIXME used in mpeg12 ...
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472 int64_t wanted_bits;
473 int64_t total_bits;
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474 int frame_bits; ///< bits used for the current frame
475 RateControlContext rc_context; ///< contains stuff only accessed in ratecontrol.c
9cdd6a24 476
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477 /* statistics, used for 2-pass encoding */
478 int mv_bits;
479 int header_bits;
480 int i_tex_bits;
481 int p_tex_bits;
482 int i_count;
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483 int f_count;
484 int b_count;
098eefe1 485 int skip_count;
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486 int misc_bits; ///< cbp, mb_type
487 int last_bits; ///< temp var used for calculating the above vars
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488
489 /* error concealment / resync */
7bc9090a 490 int error_count;
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491 uint8_t *error_status_table; ///< table of the error status of each MB
492#define VP_START 1 ///< current MB is the first after a resync marker
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493#define AC_ERROR 2
494#define DC_ERROR 4
495#define MV_ERROR 8
496#define AC_END 16
497#define DC_END 32
498#define MV_END 64
499//FIXME some prefix?
500
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501 int resync_mb_x; ///< x position of last resync marker
502 int resync_mb_y; ///< y position of last resync marker
503 GetBitContext last_resync_gb; ///< used to search for the next resync marker
504 int mb_num_left; ///< number of MBs left in this video packet (for partitioned Slices only)
505 int next_p_frame_damaged; ///< set if the next p frame is damaged, to avoid showing trashed b frames
7f2fe444 506 int error_resilience;
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507
508 ParseContext parse_context;
098eefe1 509
102d3908 510 /* H.263 specific */
644d98a4 511 int gob_index;
dba019da 512 int obmc; ///< overlapped block motion compensation
d140623f 513
544286b3 514 /* H.263+ specific */
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515 int umvplus; ///< == H263+ && unrestricted_mv
516 int h263_aic; ///< Advanded INTRA Coding (AIC)
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517 int h263_aic_dir; ///< AIC direction: 0 = left, 1 = top
518 int h263_slice_structured;
dba019da 519 int alt_inter_vlc; ///< alternative inter vlc
68b94c35 520 int modified_quant;
ba58dabc 521 int loop_filter;
544286b3 522
de6d9b64 523 /* mpeg4 specific */
6f91bcd1 524 int time_increment_resolution;
277f4827 525 int time_increment_bits; ///< number of bits to represent the fractional part of time
9dbcbd92 526 int last_time_base;
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527 int time_base; ///< time in seconds of last I,P,S Frame
528 int64_t time; ///< time of current frame
0c1a9eda 529 int64_t last_non_b_time;
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530 uint16_t pp_time; ///< time distance between the last 2 p,s,i frames
531 uint16_t pb_time; ///< time distance between the last b and p,s,i frame
0c1a9eda 532 uint16_t pp_field_time;
277f4827 533 uint16_t pb_field_time; ///< like above, just for interlaced
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534 int shape;
535 int vol_sprite_usage;
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536 int sprite_width;
537 int sprite_height;
538 int sprite_left;
539 int sprite_top;
540 int sprite_brightness_change;
73c8e514 541 int num_sprite_warping_points;
44eb4951 542 int real_sprite_warping_points;
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543 int sprite_offset[2][2]; ///< sprite offset[isChroma][isMVY]
544 int sprite_delta[2][2]; ///< sprite_delta [isY][isMVY]
545 int sprite_shift[2]; ///< sprite shift [isChroma]
73c8e514 546 int mcsel;
1a565432 547 int quant_precision;
277f4827 548 int quarter_sample; ///< 1->qpel, 0->half pel ME/MC
cc9ba006 549 int scalability;
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550 int hierachy_type;
551 int enhancement_type;
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552 int new_pred;
553 int reduced_res_vop;
0da71265 554 int aspect_ratio_info; //FIXME remove
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555 int sprite_warping_accuracy;
556 int low_latency_sprite;
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557 int data_partitioning; ///< data partitioning flag from header
558 int partitioned_frame; ///< is current frame partitioned
559 int rvlc; ///< reversible vlc
560 int resync_marker; ///< could this stream contain resync markers
561 int low_delay; ///< no reordering needed / has no b-frames
1ff662cc 562 int vo_type;
277f4827 563 int vol_control_parameters; ///< does the stream contain the low_delay flag, used to workaround buggy encoders
34790165 564 int intra_dc_threshold; ///< QP above whch the ac VLC should be used for intra dc
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565 PutBitContext tex_pb; ///< used for data partitioned VOPs
566 PutBitContext pb2; ///< used for data partitioned VOPs
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567#define PB_BUFFER_SIZE 1024*256
568 uint8_t *tex_pb_buffer;
569 uint8_t *pb2_buffer;
d930ef19 570 int mpeg_quant;
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571 int t_frame; ///< time distance of first I -> B, used for interlaced b frames
572 int padding_bug_score; ///< used to detect the VERY common padding bug in MPEG4
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573
574 /* divx specific, used to workaround (many) bugs in divx5 */
575 int divx_version;
576 int divx_build;
d5a21172 577 int divx_packed;
eec1c6b9 578#define BITSTREAM_BUFFER_SIZE 1024*256
0c1a9eda 579 uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
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580 int bitstream_buffer_size;
581
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582 int xvid_build;
583
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584 /* lavc specific stuff, used to workaround bugs in libavcodec */
585 int ffmpeg_version;
586 int lavc_build;
587
de6d9b64 588 /* RV10 specific */
277f4827 589 int rv10_version; ///< RV10 version: 0 or 3
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590 int rv10_first_dc_coded[3];
591
592 /* MJPEG specific */
593 struct MJpegContext *mjpeg_ctx;
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594 int mjpeg_vsample[3]; ///< vertical sampling factors, default = {2, 1, 1}
595 int mjpeg_hsample[3]; ///< horizontal sampling factors, default = {2, 1, 1}
596 int mjpeg_write_tables; ///< do we want to have quantisation- and huffmantables in the jpeg file ?
597 int mjpeg_data_only_frames; ///< frames only with SOI, SOS and EOI markers
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598
599 /* MSMPEG4 specific */
600 int mv_table_index;
601 int rl_table_index;
602 int rl_chroma_table_index;
603 int dc_table_index;
604 int use_skip_mb_code;
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605 int slice_height; ///< in macroblocks
606 int first_slice_line; ///< used in mpeg4 too to handle resync markers
ae40484c 607 int flipflop_rounding;
277f4827 608 int msmpeg4_version; ///< 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8
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609 int per_mb_rl_table;
610 int esc3_level_length;
611 int esc3_run_length;
277f4827 612 /** [mb_intra][isChroma][level][run][last] */
6b460aa3 613 int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2];
de0f2f4c 614 int inter_intra_pred;
1457ab52 615 int mspel;
0151a6f5 616
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617 /* decompression specific */
618 GetBitContext gb;
619
1e491e29 620 /* Mpeg1 specific */
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621 int fake_picture_number; ///< picture number at the bitstream frame rate
622 int gop_picture_number; ///< index of the first picture of a GOP based on fake_pic_num & mpeg1 specific
623 int last_mv_dir; ///< last mv_dir, used for b frame encoding
0da71265 624 int broken_link; ///< no_output_of_prior_pics_flag
d60a8f85 625 uint8_t *vbv_delay_ptr; ///< pointer to vbv_delay in the bitstream
1e491e29 626
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627 /* MPEG2 specific - I wish I had not to support this mess. */
628 int progressive_sequence;
629 int mpeg_f_code[2][2];
630 int picture_structure;
631/* picture type */
632#define PICT_TOP_FIELD 1
633#define PICT_BOTTOM_FIELD 2
634#define PICT_FRAME 3
635
636 int intra_dc_precision;
637 int frame_pred_frame_dct;
638 int top_field_first;
639 int concealment_motion_vectors;
640 int q_scale_type;
641 int intra_vlc_format;
642 int alternate_scan;
643 int repeat_first_field;
644 int chroma_420_type;
645 int progressive_frame;
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646 int full_pel[2];
647 int interlaced_dct;
de6d9b64 648 int first_slice;
c3bf0288 649 int first_field; ///< is 1 for the first field of a field picture 0 otherwise
ba58dabc 650
644d98a4 651 /* RTP specific */
e4eadb4b 652 int rtp_mode;
ba58dabc 653
0c1a9eda 654 uint8_t *ptr_lastgob;
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655 int swap_uv;//vcr2 codec is mpeg2 varint with UV swaped
656 short * pblocks[12];
644d98a4 657
277f4827 658 DCTELEM (*block)[64]; ///< points to one of the following blocks
45686da2 659 DCTELEM (*blocks)[6][64]; // for HQ mode we need to keep the best block
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660 int (*decode_mb)(struct MpegEncContext *s, DCTELEM block[6][64]); // used by some codecs to avoid a switch()
661#define SLICE_OK 0
662#define SLICE_ERROR -1
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663#define SLICE_END -2 ///<end marker found
664#define SLICE_NOEND -3 ///<no end marker or error found but mb count exceeded
4d2858de 665
d50635cd 666 void (*dct_unquantize_mpeg1_intra)(struct MpegEncContext *s,
67309e49 667 DCTELEM *block/*align 16*/, int n, int qscale);
d50635cd 668 void (*dct_unquantize_mpeg1_inter)(struct MpegEncContext *s,
67309e49 669 DCTELEM *block/*align 16*/, int n, int qscale);
d50635cd 670 void (*dct_unquantize_mpeg2_intra)(struct MpegEncContext *s,
67309e49 671 DCTELEM *block/*align 16*/, int n, int qscale);
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672 void (*dct_unquantize_mpeg2_inter)(struct MpegEncContext *s,
673 DCTELEM *block/*align 16*/, int n, int qscale);
674 void (*dct_unquantize_h263_intra)(struct MpegEncContext *s,
675 DCTELEM *block/*align 16*/, int n, int qscale);
676 void (*dct_unquantize_h263_inter)(struct MpegEncContext *s,
677 DCTELEM *block/*align 16*/, int n, int qscale);
678 void (*dct_unquantize_intra)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
679 DCTELEM *block/*align 16*/, int n, int qscale);
680 void (*dct_unquantize_inter)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
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681 DCTELEM *block/*align 16*/, int n, int qscale);
682 int (*dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
3a87ac94 683 int (*fast_dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
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684} MpegEncContext;
685
4d2858de 686
defdfc9a 687int DCT_common_init(MpegEncContext *s);
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688int MPV_common_init(MpegEncContext *s);
689void MPV_common_end(MpegEncContext *s);
690void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64]);
d6db1c9c 691int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx);
de6d9b64 692void MPV_frame_end(MpegEncContext *s);
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693int MPV_encode_init(AVCodecContext *avctx);
694int MPV_encode_end(AVCodecContext *avctx);
695int MPV_encode_picture(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data);
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696#ifdef HAVE_MMX
697void MPV_common_init_mmx(MpegEncContext *s);
698#endif
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699#ifdef ARCH_ALPHA
700void MPV_common_init_axp(MpegEncContext *s);
701#endif
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702#ifdef HAVE_MLIB
703void MPV_common_init_mlib(MpegEncContext *s);
704#endif
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705#ifdef HAVE_MMI
706void MPV_common_init_mmi(MpegEncContext *s);
707#endif
83f238cb 708#ifdef ARCH_ARMV4L
d43b10ec 709void MPV_common_init_armv4l(MpegEncContext *s);
83f238cb 710#endif
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711#ifdef ARCH_POWERPC
712void MPV_common_init_ppc(MpegEncContext *s);
713#endif
0c1a9eda 714extern void (*draw_edges)(uint8_t *buf, int wrap, int width, int height, int w);
0c1a9eda 715void ff_copy_bits(PutBitContext *pb, uint8_t *src, int length);
7f2fe444 716void ff_clean_intra_table_entries(MpegEncContext *s);
3d2e8cce 717void ff_init_scantable(uint8_t *, ScanTable *st, const uint8_t *src_scantable);
640950c7 718void ff_draw_horiz_band(MpegEncContext *s, int y, int h);
c009df3f 719void ff_emulated_edge_mc(uint8_t *buf, uint8_t *src, int linesize, int block_w, int block_h,
1457ab52 720 int src_x, int src_y, int w, int h);
bb463d81 721#define END_NOT_FOUND -100
b7a22d84 722int ff_combine_frame( MpegEncContext *s, int next, uint8_t **buf, int *buf_size);
7a06ff14 723void ff_mpeg_flush(AVCodecContext *avctx);
0c9bbaec 724void ff_print_debug_info(MpegEncContext *s, AVFrame *pict);
d6eb3c50 725void ff_write_quant_matrix(PutBitContext *pb, int16_t *matrix);
5f194811 726int ff_find_unused_picture(MpegEncContext *s, int shared);
821cb11f 727void ff_denoise_dct(MpegEncContext *s, DCTELEM *block);
59b571c1 728
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729void ff_er_frame_start(MpegEncContext *s);
730void ff_er_frame_end(MpegEncContext *s);
731void ff_er_add_slice(MpegEncContext *s, int startx, int starty, int endx, int endy, int status);
732
733
a33c7159 734extern enum PixelFormat ff_yuv420p_list[2];
de6d9b64 735
7d1c3fc1 736void ff_init_block_index(MpegEncContext *s);
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737
738static inline void ff_update_block_index(MpegEncContext *s){
739 s->block_index[0]+=2;
740 s->block_index[1]+=2;
741 s->block_index[2]+=2;
742 s->block_index[3]+=2;
743 s->block_index[4]++;
744 s->block_index[5]++;
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745 s->dest[0]+= 16;
746 s->dest[1]+= 8;
747 s->dest[2]+= 8;
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748}
749
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750static inline int get_bits_diff(MpegEncContext *s){
751 const int bits= get_bit_count(&s->pb);
752 const int last= s->last_bits;
753
754 s->last_bits = bits;
755
756 return bits - last;
757}
4d2858de 758
de6d9b64 759/* motion_est.c */
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760void ff_estimate_p_frame_motion(MpegEncContext * s,
761 int mb_x, int mb_y);
762void ff_estimate_b_frame_motion(MpegEncContext * s,
763 int mb_x, int mb_y);
764int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type);
765void ff_fix_long_p_mvs(MpegEncContext * s);
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766void ff_fix_long_mvs(MpegEncContext * s, uint8_t *field_select_table, int field_select,
767 int16_t (*mv_table)[2], int f_code, int type, int truncate);
1457ab52 768void ff_init_me(MpegEncContext *s);
f5fb6b34 769int ff_pre_estimate_p_frame_motion(MpegEncContext * s, int mb_x, int mb_y);
de6d9b64 770
4d2858de 771
de6d9b64 772/* mpeg12.c */
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773extern const int16_t ff_mpeg1_default_intra_matrix[64];
774extern const int16_t ff_mpeg1_default_non_intra_matrix[64];
775extern uint8_t ff_mpeg1_dc_scale_table[128];
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776
777void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
778void mpeg1_encode_mb(MpegEncContext *s,
779 DCTELEM block[6][64],
780 int motion_x, int motion_y);
0151a6f5 781void ff_mpeg1_encode_init(MpegEncContext *s);
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782void ff_mpeg1_encode_slice_header(MpegEncContext *s);
783void ff_mpeg1_clean_buffers(MpegEncContext *s);
de6d9b64 784
4d2858de 785
277f4827 786/** RLTable. */
de6d9b64 787typedef struct RLTable {
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788 int n; ///< number of entries of table_vlc minus 1
789 int last; ///< number of values for last = 0
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790 const uint16_t (*table_vlc)[2];
791 const int8_t *table_run;
792 const int8_t *table_level;
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793 uint8_t *index_run[2]; ///< encoding only
794 int8_t *max_level[2]; ///< encoding & decoding
795 int8_t *max_run[2]; ///< encoding & decoding
796 VLC vlc; ///< decoding only deprected FIXME remove
797 RL_VLC_ELEM *rl_vlc[32]; ///< decoding only
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798} RLTable;
799
800void init_rl(RLTable *rl);
801void init_vlc_rl(RLTable *rl);
802
3232bc88 803static inline int get_rl_index(const RLTable *rl, int last, int run, int level)
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804{
805 int index;
806 index = rl->index_run[last][run];
807 if (index >= rl->n)
808 return rl->n;
809 if (level > rl->max_level[last][run])
810 return rl->n;
811 return index + level - 1;
812}
813
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814extern uint8_t ff_mpeg4_y_dc_scale_table[32];
815extern uint8_t ff_mpeg4_c_dc_scale_table[32];
68b94c35 816extern uint8_t ff_aic_dc_scale_table[32];
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817extern const int16_t ff_mpeg4_default_intra_matrix[64];
818extern const int16_t ff_mpeg4_default_non_intra_matrix[64];
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819extern const uint8_t ff_h263_chroma_qscale_table[32];
820extern const uint8_t ff_h263_loop_filter_strength[32];
68b94c35 821
554daa24 822
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823int ff_h263_decode_init(AVCodecContext *avctx);
824int ff_h263_decode_frame(AVCodecContext *avctx,
825 void *data, int *data_size,
0c1a9eda 826 uint8_t *buf, int buf_size);
1457ab52 827int ff_h263_decode_end(AVCodecContext *avctx);
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828void h263_encode_mb(MpegEncContext *s,
829 DCTELEM block[6][64],
830 int motion_x, int motion_y);
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831void mpeg4_encode_mb(MpegEncContext *s,
832 DCTELEM block[6][64],
833 int motion_x, int motion_y);
de6d9b64 834void h263_encode_picture_header(MpegEncContext *s, int picture_number);
44a2950f 835void ff_flv_encode_picture_header(MpegEncContext *s, int picture_number);
ba58dabc 836void h263_encode_gob_header(MpegEncContext * s, int mb_line);
0c1a9eda 837int16_t *h263_pred_motion(MpegEncContext * s, int block,
de6d9b64 838 int *px, int *py);
0e15384d 839void mpeg4_pred_ac(MpegEncContext * s, DCTELEM *block, int n,
de6d9b64 840 int dir);
91029be7 841void ff_set_mpeg4_time(MpegEncContext * s, int picture_number);
de6d9b64 842void mpeg4_encode_picture_header(MpegEncContext *s, int picture_number);
45870f57 843void h263_encode_init(MpegEncContext *s);
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844void h263_decode_init_vlc(MpegEncContext *s);
845int h263_decode_picture_header(MpegEncContext *s);
4d2858de 846int ff_h263_decode_gob_header(MpegEncContext *s);
b704e742 847int ff_mpeg4_decode_picture_header(MpegEncContext * s, GetBitContext *gb);
7d1c3fc1 848void ff_h263_update_motion_val(MpegEncContext * s);
cdb4e730 849void ff_h263_loop_filter(MpegEncContext * s);
554daa24 850void ff_set_qscale(MpegEncContext * s, int qscale);
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851int ff_h263_decode_mba(MpegEncContext *s);
852void ff_h263_encode_mba(MpegEncContext *s);
b704e742 853
de6d9b64 854int intel_h263_decode_picture_header(MpegEncContext *s);
d4f5d74a 855int flv_h263_decode_picture_header(MpegEncContext *s);
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856int ff_h263_decode_mb(MpegEncContext *s,
857 DCTELEM block[6][64]);
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858int ff_mpeg4_decode_mb(MpegEncContext *s,
859 DCTELEM block[6][64]);
de6d9b64 860int h263_get_picture_format(int width, int height);
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861void ff_mpeg4_encode_video_packet_header(MpegEncContext *s);
862void ff_mpeg4_clean_buffers(MpegEncContext *s);
863void ff_mpeg4_stuffing(PutBitContext * pbc);
864void ff_mpeg4_init_partitions(MpegEncContext *s);
865void ff_mpeg4_merge_partitions(MpegEncContext *s);
c5d309f2 866void ff_clean_mpeg4_qscales(MpegEncContext *s);
9e4c6948 867void ff_clean_h263_qscales(MpegEncContext *s);
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868int ff_mpeg4_decode_partitions(MpegEncContext *s);
869int ff_mpeg4_get_video_packet_prefix_length(MpegEncContext *s);
870int ff_h263_resync(MpegEncContext *s);
871int ff_h263_get_gob_height(MpegEncContext *s);
7bc9090a 872int ff_mpeg4_set_direct_mv(MpegEncContext *s, int mx, int my);
67725183 873inline int ff_h263_round_chroma(int x);
4d2858de 874
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875
876/* rv10.c */
877void rv10_encode_picture_header(MpegEncContext *s, int picture_number);
878int rv_decode_dc(MpegEncContext *s, int n);
879
4d2858de 880
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881/* msmpeg4.c */
882void msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number);
ae40484c 883void msmpeg4_encode_ext_header(MpegEncContext * s);
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884void msmpeg4_encode_mb(MpegEncContext * s,
885 DCTELEM block[6][64],
886 int motion_x, int motion_y);
de6d9b64 887int msmpeg4_decode_picture_header(MpegEncContext * s);
ae40484c 888int msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
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889int ff_msmpeg4_decode_init(MpegEncContext *s);
890void ff_msmpeg4_encode_init(MpegEncContext *s);
1457ab52 891int ff_wmv2_decode_picture_header(MpegEncContext * s);
b1609412 892int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s);
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893void ff_wmv2_add_mb(MpegEncContext *s, DCTELEM block[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr);
894void ff_mspel_motion(MpegEncContext *s,
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895 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
896 uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
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897 int motion_x, int motion_y, int h);
898int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number);
899void ff_wmv2_encode_mb(MpegEncContext * s,
900 DCTELEM block[6][64],
901 int motion_x, int motion_y);
de6d9b64 902
c009df3f 903/* mjpeg.c */
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904int mjpeg_init(MpegEncContext *s);
905void mjpeg_close(MpegEncContext *s);
906void mjpeg_encode_mb(MpegEncContext *s,
907 DCTELEM block[6][64]);
908void mjpeg_picture_header(MpegEncContext *s);
909void mjpeg_picture_trailer(MpegEncContext *s);
8b4c7dbc 910
4d2858de 911
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912/* rate control */
913int ff_rate_control_init(MpegEncContext *s);
c5d309f2 914float ff_rate_estimate_qscale(MpegEncContext *s);
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915void ff_write_pass1_stats(MpegEncContext *s);
916void ff_rate_control_uninit(MpegEncContext *s);
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917double ff_eval(char *s, double *const_value, const char **const_name,
918 double (**func1)(void *, double), const char **func1_name,
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919 double (**func2)(void *, double, double), char **func2_name,
920 void *opaque);
11dffbe1 921int ff_vbv_update(MpegEncContext *s, int frame_size);
3aa102be 922
8b4c7dbc 923
cd4af68a 924#endif /* AVCODEC_MPEGVIDEO_H */