AVRational
[libav.git] / libavcodec / mpegvideo.h
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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;
277f4827 96 int 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];
137
138 int16_t (*motion_val[2])[2];
139 int8_t *ref_index[2];
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140 uint32_t *mb_type_base;
141 uint32_t *mb_type; ///< mb_type_base + mb_width + 2, note: only used for decoding currently
0da71265 142#define MB_TYPE_INTRA4x4 0x0001
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143#define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
144#define MB_TYPE_INTRA_PCM 0x0004 //FIXME h264 specific
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145#define MB_TYPE_16x16 0x0008
146#define MB_TYPE_16x8 0x0010
147#define MB_TYPE_8x16 0x0020
148#define MB_TYPE_8x8 0x0040
149#define MB_TYPE_INTERLACED 0x0080
150#define MB_TYPE_DIRECT2 0x0100 //FIXME
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151#define MB_TYPE_ACPRED 0x0200
152#define MB_TYPE_GMC 0x0400 //FIXME mpeg4 specific
153#define MB_TYPE_SKIP 0x0800
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154#define MB_TYPE_P0L0 0x1000
155#define MB_TYPE_P1L0 0x2000
156#define MB_TYPE_P0L1 0x4000
157#define MB_TYPE_P1L1 0x8000
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158#define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
159#define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
160#define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
161#define MB_TYPE_QUANT 0x00010000
162//Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 pat, ...)
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163
164#define IS_INTRA4x4(a) ((a)&MB_TYPE_INTRA4x4)
165#define IS_INTRA16x16(a) ((a)&MB_TYPE_INTRA16x16)
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166#define IS_PCM(a) ((a)&MB_TYPE_INTRA_PCM)
167#define IS_INTRA(a) ((a)&7)
0da71265 168#define IS_INTER(a) ((a)&(MB_TYPE_16x16|MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8))
7bc9090a 169#define IS_SKIP(a) ((a)&MB_TYPE_SKIP)
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170#define IS_INTRA_PCM(a) ((a)&MB_TYPE_INTRA_PCM)
171#define IS_INTERLACED(a) ((a)&MB_TYPE_INTERLACED)
172#define IS_DIRECT(a) ((a)&MB_TYPE_DIRECT2)
7bc9090a 173#define IS_GMC(a) ((a)&MB_TYPE_GMC)
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174#define IS_16X16(a) ((a)&MB_TYPE_16x16)
175#define IS_16X8(a) ((a)&MB_TYPE_16x8)
176#define IS_8X16(a) ((a)&MB_TYPE_8x16)
177#define IS_8X8(a) ((a)&MB_TYPE_8x8)
178#define IS_SUB_8X8(a) ((a)&MB_TYPE_16x16) //note reused
179#define IS_SUB_8X4(a) ((a)&MB_TYPE_16x8) //note reused
180#define IS_SUB_4X8(a) ((a)&MB_TYPE_8x16) //note reused
181#define IS_SUB_4X4(a) ((a)&MB_TYPE_8x8) //note reused
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182#define IS_ACPRED(a) ((a)&MB_TYPE_ACPRED)
183#define IS_QUANT(a) ((a)&MB_TYPE_QUANT)
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184#define IS_DIR(a, part, list) ((a) & (MB_TYPE_P0L0<<((part)+2*(list))))
185#define USES_LIST(a, list) ((a) & ((MB_TYPE_P0L0|MB_TYPE_P1L0)<<(2*(list)))) ///< does this mb use listX, note doesnt work if subMBs
186
187
188 int field_poc[2]; ///< h264 top/bottom POC
189 int poc; ///< h264 frame POC
190 int frame_num; ///< h264 frame_num
191 int pic_id; ///< h264 pic_num or long_term_pic_idx
192 int long_ref; ///< 1->long term reference 0->short term reference
193
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194 int mb_var_sum; ///< sum of MB variance for current frame
195 int mc_mb_var_sum; ///< motion compensated MB variance for current frame
196 uint16_t *mb_var; ///< Table for MB variances
197 uint16_t *mc_mb_var; ///< Table for motion compensated MB variances
198 uint8_t *mb_mean; ///< Table for MB luminance
199 int32_t *mb_cmp_score; ///< Table for MB cmp scores, for mb decission
0d1e9246 200 int b_frame_score; /* */
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201} Picture;
202
d7425f59 203typedef struct ParseContext{
0c1a9eda 204 uint8_t *buffer;
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205 int index;
206 int last_index;
207 int buffer_size;
bb463d81 208 uint32_t state; ///< contains the last few bytes in MSB order
d7425f59 209 int frame_start_found;
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210 int overread; ///< the number of bytes which where irreversibly read from the next frame
211 int overread_index; ///< the index into ParseContext.buffer of the overreaded bytes
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212} ParseContext;
213
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214struct MpegEncContext;
215
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216/**
217 * Motion estimation context.
218 */
1457ab52 219typedef struct MotionEstContext{
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220 int skip; ///< set if ME is skiped for the current MB
221 int co_located_mv[4][2]; ///< mv from last p frame for direct mode ME
1457ab52 222 int direct_basis_mv[4][2];
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223 uint8_t *scratchpad; ///< data area for the me algo, so that the ME doesnt need to malloc/free
224 uint32_t *map; ///< map to avoid duplicate evaluations
225 uint32_t *score_map; ///< map to store the scores
1457ab52 226 int map_generation;
826f429a 227 int pre_penalty_factor;
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228 int penalty_factor;
229 int sub_penalty_factor;
67725183 230 int mb_penalty_factor;
277f4827 231 int pre_pass; ///< = 1 for the pre pass
826f429a 232 int dia_size;
30952237 233 uint8_t (*mv_penalty)[MAX_MV*2+1]; ///< amount of bits needed to encode a MV
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234 int (*sub_motion_search)(struct MpegEncContext * s,
235 int *mx_ptr, int *my_ptr, int dmin,
236 int xmin, int ymin, int xmax, int ymax,
237 int pred_x, int pred_y, Picture *ref_picture,
30952237 238 int n, int size, uint8_t * const mv_penalty);
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239 int (*motion_search[7])(struct MpegEncContext * s, int block,
240 int *mx_ptr, int *my_ptr,
241 int P[10][2], int pred_x, int pred_y,
826f429a 242 int xmin, int ymin, int xmax, int ymax, Picture *ref_picture, int16_t (*last_mv)[2],
30952237 243 int ref_mv_scale, uint8_t * const mv_penalty);
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244 int (*pre_motion_search)(struct MpegEncContext * s, int block,
245 int *mx_ptr, int *my_ptr,
246 int P[10][2], int pred_x, int pred_y,
b07a5980 247 int xmin, int ymin, int xmax, int ymax, Picture *ref_picture, int16_t (*last_mv)[2],
30952237 248 int ref_mv_scale, uint8_t * const mv_penalty);
67725183 249 int (*get_mb_score)(struct MpegEncContext * s, int mx, int my, int pred_x, int pred_y, Picture *ref_picture,
30952237 250 uint8_t * const mv_penalty);
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251}MotionEstContext;
252
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253/**
254 * MpegEncContext.
255 */
de6d9b64 256typedef struct MpegEncContext {
58f26ba9 257 struct AVCodecContext *avctx;
de6d9b64 258 /* the following parameters must be initialized before encoding */
277f4827 259 int width, height;///< picture size. must be a multiple of 16
de6d9b64 260 int gop_size;
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261 int intra_only; ///< if true, only intra pictures are generated
262 int bit_rate; ///< wanted bit rate
263 int bit_rate_tolerance; ///< amount of +- bits (>0)
264 enum OutputFormat out_format; ///< output format
265 int h263_pred; ///< use mpeg4/h263 ac/dc predictions
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266
267/* the following codec id fields are deprecated in favor of codec_id */
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268 int h263_plus; ///< h263 plus headers
269 int h263_rv10; ///< use RV10 variation for H263
270 int h263_msmpeg4; ///< generate MSMPEG4 compatible stream (deprecated, use msmpeg4_version instead)
271 int h263_intel; ///< use I263 intel h263 header
d4f5d74a 272 int h263_flv; ///< use flv h263 header
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273
274 int codec_id; /* see CODEC_ID_xxx */
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275 int fixed_qscale; ///< fixed qscale if non zero
276 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
277 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
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278 int max_qdiff; ///< max qscale difference between frames
279 int encoding; ///< true if we are encoding (vs decoding)
280 int flags; ///< AVCodecContext.flags (HQ, MV4, ...)
281 int max_b_frames; ///< max number of b-frames for encoding
8b4c7dbc 282 int b_frame_strategy;
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283 int luma_elim_threshold;
284 int chroma_elim_threshold;
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285 int strict_std_compliance; ///< strictly follow the std (MPEG4, ...)
286 int workaround_bugs; ///< workaround bugs in encoders which cannot be detected automatically
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287 /* the following fields are managed internally by the encoder */
288
277f4827 289 /** bit output */
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290 PutBitContext pb;
291
292 /* sequence parameters */
293 int context_initialized;
9dbcbd92 294 int input_picture_number;
de6d9b64 295 int picture_number;
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296 int picture_in_gop_number; ///< 0-> first pic in gop, ...
297 int b_frames_since_non_b; ///< used for encoding, relative to not yet reordered input
298 int mb_width, mb_height; ///< number of MBs horizontally & vertically
7bc9090a 299 int mb_stride; ///< mb_width+1 used for some arrays to allow simple addressng of left & top MBs withoutt sig11
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300 int h_edge_pos, v_edge_pos;///< horizontal / vertical position of the right/bottom edge (pixel replicateion)
301 int mb_num; ///< number of MBs of a picture
302 int linesize; ///< line size, in bytes, may be different from width
303 int uvlinesize; ///< line size, for chroma in bytes, may be different from width
304 Picture picture[MAX_PICTURE_COUNT]; ///< main picture buffer
305 Picture *input_picture[MAX_PICTURE_COUNT]; ///< next pictures on display order for encoding
306 Picture *reordered_input_picture[MAX_PICTURE_COUNT]; ///< pointer to the next pictures in codedorder for encoding
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307
308 /**
309 * copy of the previous picture structure.
310 * note, linesize & data, might not match the previous picture (for field pictures)
311 */
312 Picture last_picture;
313
314 /**
315 * copy of the next picture structure.
316 * note, linesize & data, might not match the next picture (for field pictures)
317 */
318 Picture next_picture;
319
320 /**
321 * copy of the source picture structure for encoding.
322 * note, linesize & data, might not match the source picture (for field pictures)
323 */
324 Picture new_picture;
325
326 /**
327 * copy of the current picture structure.
328 * note, linesize & data, might not match the current picture (for field pictures)
329 */
277f4827 330 Picture current_picture; ///< buffer to store the decompressed current picture
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331
332 Picture *last_picture_ptr; ///< pointer to the previous picture.
333 Picture *next_picture_ptr; ///< pointer to the next picture (for bidir pred)
b536d0aa 334 Picture *current_picture_ptr; ///< pointer to the current picture
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335 int last_dc[3]; ///< last DC values for MPEG1
336 int16_t *dc_val[3]; ///< used for mpeg4 DC prediction, all 3 arrays must be continuous
0da71265 337 int16_t dc_cache[4*5];
de6d9b64 338 int y_dc_scale, c_dc_scale;
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339 uint8_t *y_dc_scale_table; ///< qscale -> y_dc_scale table
340 uint8_t *c_dc_scale_table; ///< qscale -> c_dc_scale table
341 uint8_t *coded_block; ///< used for coded block pattern prediction (msmpeg4v3, wmv1)
342 int16_t (*ac_val[3])[16]; ///< used for for mpeg4 AC prediction, all 3 arrays must be continuous
de6d9b64 343 int ac_pred;
277f4827 344 uint8_t *prev_pict_types; ///< previous picture types in bitstream order, used for mb skip
f943e138 345#define PREV_PICT_TYPES_BUFFER_SIZE 256
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346 int mb_skiped; ///< MUST BE SET only during DECODING
347 uint8_t *mbskip_table; /**< used to avoid copy if macroblock skipped (for black regions for example)
9dbcbd92 348 and used for b-frame encoding & decoding (contains skip table of next P Frame) */
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349 uint8_t *mbintra_table; ///< used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
350 uint8_t *cbp_table; ///< used to store cbp, ac_pred for partitioned decoding
351 uint8_t *pred_dir_table; ///< used to store pred_dir for partitioned decoding
f7b47594 352 uint8_t *allocated_edge_emu_buffer;
277f4827 353 uint8_t *edge_emu_buffer; ///< points into the middle of allocated_edge_emu_buffer
de6d9b64 354
277f4827 355 int qscale; ///< QP
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356 int lambda; ///< lagrange multipler used in rate distortion
357 int lambda2; ///< (lambda*lambda) >> FF_LAMBDA_SHIFT
358 int *lambda_table;
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359 int adaptive_quant; ///< use adaptive quantization
360 int dquant; ///< qscale difference to prev qscale
361 int pict_type; ///< I_TYPE, P_TYPE, B_TYPE, ...
3aa102be 362 int last_pict_type;
277f4827 363 int last_non_b_pict_type; ///< used for mpeg4 gmc b-frames & ratecontrol
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364 int frame_rate_index;
365 /* motion compensation */
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366 int unrestricted_mv; ///< mv can point outside of the coded picture
367 int h263_long_vectors; ///< use horrible h263v1 long vector mode
0da71265 368 int decode; ///< if 0 then decoding will be skiped (for encoding b frames for example)
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369
370 DSPContext dsp; ///< pointers for accelerated dsp fucntions
371 int f_code; ///< forward MV resolution
372 int b_code; ///< backward MV resolution for B Frames (mpeg4)
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373 int16_t (*motion_val)[2];
374 int16_t (*p_mv_table_base)[2];
375 int16_t (*b_forw_mv_table_base)[2];
376 int16_t (*b_back_mv_table_base)[2];
377 int16_t (*b_bidir_forw_mv_table_base)[2];
378 int16_t (*b_bidir_back_mv_table_base)[2];
379 int16_t (*b_direct_mv_table_base)[2];
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380 int16_t (*p_mv_table)[2]; ///< MV table (1MV per MB) p-frame encoding
381 int16_t (*b_forw_mv_table)[2]; ///< MV table (1MV per MB) forward mode b-frame encoding
382 int16_t (*b_back_mv_table)[2]; ///< MV table (1MV per MB) backward mode b-frame encoding
383 int16_t (*b_bidir_forw_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
384 int16_t (*b_bidir_back_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
385 int16_t (*b_direct_mv_table)[2]; ///< MV table (1MV per MB) direct mode b-frame encoding
386 int me_method; ///< ME algorithm
1fb4890b 387 int scene_change_score;
de6d9b64 388 int mv_dir;
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389#define MV_DIR_BACKWARD 1
390#define MV_DIR_FORWARD 2
277f4827 391#define MV_DIRECT 4 ///< bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4)
de6d9b64 392 int mv_type;
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393#define MV_TYPE_16X16 0 ///< 1 vector for the whole mb
394#define MV_TYPE_8X8 1 ///< 4 vectors (h263, mpeg4 4MV)
395#define MV_TYPE_16X8 2 ///< 2 vectors, one per 16x8 block
396#define MV_TYPE_FIELD 3 ///< 2 vectors, one per field
397#define MV_TYPE_DMV 4 ///< 2 vectors, special mpeg2 Dual Prime Vectors
398 /**motion vectors for a macroblock
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399 first coordinate : 0 = forward 1 = backward
400 second " : depend on type
401 third " : 0 = x, 1 = y
402 */
403 int mv[2][4][2];
404 int field_select[2][2];
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405 int last_mv[2][2][2]; ///< last MV, used for MV prediction in MPEG1 & B-frame MPEG4
406 uint8_t *fcode_tab; ///< smallest fcode needed for each MV
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407
408 MotionEstContext me;
de6d9b64 409
277f4827 410 int no_rounding; /**< apply no rounding to motion compensation (MPEG4, msmpeg4, ...)
91029be7 411 for b-frames rounding mode is allways 0 */
de6d9b64 412
277f4827 413 int hurry_up; /**< when set to 1 during decoding, b frames will be skiped
2417652e 414 when set to 2 idct/dequant will be skipped too */
c5d309f2 415
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416 /* macroblock layer */
417 int mb_x, mb_y;
9b8709d1 418 int mb_skip_run;
de6d9b64 419 int mb_intra;
7bc9090a 420 uint8_t *mb_type; ///< Table for MB type FIXME remove and use picture->mb_type
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421#define MB_TYPE_INTRA 0x01
422#define MB_TYPE_INTER 0x02
423#define MB_TYPE_INTER4V 0x04
424#define MB_TYPE_SKIPED 0x08
7bc9090a 425//#define MB_TYPE_GMC 0x10
7f2fe444 426
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427#define MB_TYPE_DIRECT 0x10
428#define MB_TYPE_FORWARD 0x20
9dbcbd92 429#define MB_TYPE_BACKWARD 0x40
ba6802de 430#define MB_TYPE_BIDIR 0x80
4278e7a6 431
277f4827 432 int block_index[6]; ///< index to current MB in block based arrays with edges
4278e7a6 433 int block_wrap[6];
7d1c3fc1 434 uint8_t *dest[3];
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435
436 int *mb_index2xy; ///< mb_index -> mb_x + mb_y*mb_stride
4278e7a6 437
277f4827 438 /** matrix transmitted in the bitstream */
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439 uint16_t intra_matrix[64];
440 uint16_t chroma_intra_matrix[64];
441 uint16_t inter_matrix[64];
442 uint16_t chroma_inter_matrix[64];
1984f635 443#define QUANT_BIAS_SHIFT 8
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444 int intra_quant_bias; ///< bias for the quantizer
445 int inter_quant_bias; ///< bias for the quantizer
446 int min_qcoeff; ///< minimum encodable coefficient
447 int max_qcoeff; ///< maximum encodable coefficient
448 int ac_esc_length; ///< num of bits needed to encode the longest esc
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449 uint8_t *intra_ac_vlc_length;
450 uint8_t *intra_ac_vlc_last_length;
451 uint8_t *inter_ac_vlc_length;
452 uint8_t *inter_ac_vlc_last_length;
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453 uint8_t *luma_dc_vlc_length;
454 uint8_t *chroma_dc_vlc_length;
c442d75c 455#define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level))
477ab036 456
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457 int coded_score[6];
458
277f4827 459 /** precomputed matrix (combine qscale and DCT renorm) */
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460 int __align8 q_intra_matrix[32][64];
461 int __align8 q_inter_matrix[32][64];
277f4827 462 /** identical to the above but for MMX & these are not permutated */
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463 uint16_t __align8 q_intra_matrix16[32][64];
464 uint16_t __align8 q_inter_matrix16[32][64];
465 uint16_t __align8 q_intra_matrix16_bias[32][64];
466 uint16_t __align8 q_inter_matrix16_bias[32][64];
277f4827 467 int block_last_index[6]; ///< last non zero coefficient in block
2ad1516a 468 /* scantables */
05c4072b 469 ScanTable __align8 intra_scantable;
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470 ScanTable intra_h_scantable;
471 ScanTable intra_v_scantable;
277f4827 472 ScanTable inter_scantable; ///< if inter == intra then intra should be used to reduce tha cache usage
de6d9b64 473
277f4827 474 void *opaque; ///< private data for the user
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475
476 /* bit rate control */
9dbcbd92 477 int I_frame_bits; //FIXME used in mpeg12 ...
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478 int64_t wanted_bits;
479 int64_t total_bits;
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480 int frame_bits; ///< bits used for the current frame
481 RateControlContext rc_context; ///< contains stuff only accessed in ratecontrol.c
9cdd6a24 482
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483 /* statistics, used for 2-pass encoding */
484 int mv_bits;
485 int header_bits;
486 int i_tex_bits;
487 int p_tex_bits;
488 int i_count;
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489 int f_count;
490 int b_count;
098eefe1 491 int skip_count;
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492 int misc_bits; ///< cbp, mb_type
493 int last_bits; ///< temp var used for calculating the above vars
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494
495 /* error concealment / resync */
7bc9090a 496 int error_count;
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497 uint8_t *error_status_table; ///< table of the error status of each MB
498#define VP_START 1 ///< current MB is the first after a resync marker
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499#define AC_ERROR 2
500#define DC_ERROR 4
501#define MV_ERROR 8
502#define AC_END 16
503#define DC_END 32
504#define MV_END 64
505//FIXME some prefix?
506
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507 int resync_mb_x; ///< x position of last resync marker
508 int resync_mb_y; ///< y position of last resync marker
509 GetBitContext last_resync_gb; ///< used to search for the next resync marker
510 int mb_num_left; ///< number of MBs left in this video packet (for partitioned Slices only)
511 int next_p_frame_damaged; ///< set if the next p frame is damaged, to avoid showing trashed b frames
7f2fe444 512 int error_resilience;
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513
514 ParseContext parse_context;
098eefe1 515
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516 /* H.263 specific */
517 int gob_number;
644d98a4 518 int gob_index;
d140623f 519
544286b3 520 /* H.263+ specific */
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521 int umvplus; ///< == H263+ && unrestricted_mv
522 int h263_aic; ///< Advanded INTRA Coding (AIC)
523 int h263_aic_dir; ///< AIC direction: 0 = left, 1 = top
544286b3 524
de6d9b64 525 /* mpeg4 specific */
6f91bcd1 526 int time_increment_resolution;
277f4827 527 int time_increment_bits; ///< number of bits to represent the fractional part of time
9dbcbd92 528 int last_time_base;
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529 int time_base; ///< time in seconds of last I,P,S Frame
530 int64_t time; ///< time of current frame
0c1a9eda 531 int64_t last_non_b_time;
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532 uint16_t pp_time; ///< time distance between the last 2 p,s,i frames
533 uint16_t pb_time; ///< time distance between the last b and p,s,i frame
0c1a9eda 534 uint16_t pp_field_time;
277f4827 535 uint16_t pb_field_time; ///< like above, just for interlaced
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536 int shape;
537 int vol_sprite_usage;
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538 int sprite_width;
539 int sprite_height;
540 int sprite_left;
541 int sprite_top;
542 int sprite_brightness_change;
73c8e514 543 int num_sprite_warping_points;
44eb4951 544 int real_sprite_warping_points;
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545 int sprite_offset[2][2]; ///< sprite offset[isChroma][isMVY]
546 int sprite_delta[2][2]; ///< sprite_delta [isY][isMVY]
547 int sprite_shift[2]; ///< sprite shift [isChroma]
73c8e514 548 int mcsel;
1a565432 549 int quant_precision;
277f4827 550 int quarter_sample; ///< 1->qpel, 0->half pel ME/MC
cc9ba006 551 int scalability;
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552 int hierachy_type;
553 int enhancement_type;
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554 int new_pred;
555 int reduced_res_vop;
0da71265 556 int aspect_ratio_info; //FIXME remove
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557 int sprite_warping_accuracy;
558 int low_latency_sprite;
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559 int data_partitioning; ///< data partitioning flag from header
560 int partitioned_frame; ///< is current frame partitioned
561 int rvlc; ///< reversible vlc
562 int resync_marker; ///< could this stream contain resync markers
563 int low_delay; ///< no reordering needed / has no b-frames
1ff662cc 564 int vo_type;
277f4827 565 int vol_control_parameters; ///< does the stream contain the low_delay flag, used to workaround buggy encoders
34790165 566 int intra_dc_threshold; ///< QP above whch the ac VLC should be used for intra dc
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567 PutBitContext tex_pb; ///< used for data partitioned VOPs
568 PutBitContext pb2; ///< used for data partitioned VOPs
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569#define PB_BUFFER_SIZE 1024*256
570 uint8_t *tex_pb_buffer;
571 uint8_t *pb2_buffer;
d930ef19 572 int mpeg_quant;
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573 int16_t (*field_mv_table)[2][2]; ///< used for interlaced b frame decoding
574 int8_t (*field_select_table)[2]; ///< wtf, no really another table for interlaced b frames
575 int t_frame; ///< time distance of first I -> B, used for interlaced b frames
576 int padding_bug_score; ///< used to detect the VERY common padding bug in MPEG4
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577
578 /* divx specific, used to workaround (many) bugs in divx5 */
579 int divx_version;
580 int divx_build;
d5a21172 581 int divx_packed;
eec1c6b9 582#define BITSTREAM_BUFFER_SIZE 1024*256
0c1a9eda 583 uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
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584 int bitstream_buffer_size;
585
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586 int xvid_build;
587
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588 /* lavc specific stuff, used to workaround bugs in libavcodec */
589 int ffmpeg_version;
590 int lavc_build;
591
de6d9b64 592 /* RV10 specific */
277f4827 593 int rv10_version; ///< RV10 version: 0 or 3
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594 int rv10_first_dc_coded[3];
595
596 /* MJPEG specific */
597 struct MJpegContext *mjpeg_ctx;
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598 int mjpeg_vsample[3]; ///< vertical sampling factors, default = {2, 1, 1}
599 int mjpeg_hsample[3]; ///< horizontal sampling factors, default = {2, 1, 1}
600 int mjpeg_write_tables; ///< do we want to have quantisation- and huffmantables in the jpeg file ?
601 int mjpeg_data_only_frames; ///< frames only with SOI, SOS and EOI markers
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602
603 /* MSMPEG4 specific */
604 int mv_table_index;
605 int rl_table_index;
606 int rl_chroma_table_index;
607 int dc_table_index;
608 int use_skip_mb_code;
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609 int slice_height; ///< in macroblocks
610 int first_slice_line; ///< used in mpeg4 too to handle resync markers
ae40484c 611 int flipflop_rounding;
277f4827 612 int msmpeg4_version; ///< 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8
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613 int per_mb_rl_table;
614 int esc3_level_length;
615 int esc3_run_length;
277f4827 616 /** [mb_intra][isChroma][level][run][last] */
6b460aa3 617 int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2];
de0f2f4c 618 int inter_intra_pred;
1457ab52 619 int mspel;
0151a6f5 620
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621 /* decompression specific */
622 GetBitContext gb;
623
1e491e29 624 /* Mpeg1 specific */
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625 int fake_picture_number; ///< picture number at the bitstream frame rate
626 int gop_picture_number; ///< index of the first picture of a GOP based on fake_pic_num & mpeg1 specific
627 int last_mv_dir; ///< last mv_dir, used for b frame encoding
0da71265 628 int broken_link; ///< no_output_of_prior_pics_flag
1e491e29 629
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630 /* MPEG2 specific - I wish I had not to support this mess. */
631 int progressive_sequence;
632 int mpeg_f_code[2][2];
633 int picture_structure;
634/* picture type */
635#define PICT_TOP_FIELD 1
636#define PICT_BOTTOM_FIELD 2
637#define PICT_FRAME 3
638
639 int intra_dc_precision;
640 int frame_pred_frame_dct;
641 int top_field_first;
642 int concealment_motion_vectors;
643 int q_scale_type;
644 int intra_vlc_format;
645 int alternate_scan;
646 int repeat_first_field;
647 int chroma_420_type;
648 int progressive_frame;
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649 int full_pel[2];
650 int interlaced_dct;
de6d9b64 651 int first_slice;
c3bf0288 652 int first_field; ///< is 1 for the first field of a field picture 0 otherwise
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653
654 /* RTP specific */
81401c1f 655 /* These are explained on avcodec.h */
e4eadb4b 656 int rtp_mode;
644d98a4 657 int rtp_payload_size;
81401c1f 658 void (*rtp_callback)(void *data, int size, int packet_number);
0c1a9eda 659 uint8_t *ptr_lastgob;
644d98a4 660
277f4827 661 DCTELEM (*block)[64]; ///< points to one of the following blocks
91029be7 662 DCTELEM blocks[2][6][64] __align8; // for HQ mode we need to keep the best block
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663 int (*decode_mb)(struct MpegEncContext *s, DCTELEM block[6][64]); // used by some codecs to avoid a switch()
664#define SLICE_OK 0
665#define SLICE_ERROR -1
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666#define SLICE_END -2 ///<end marker found
667#define SLICE_NOEND -3 ///<no end marker or error found but mb count exceeded
4d2858de 668
9dbf1ddd 669 void (*dct_unquantize_mpeg1)(struct MpegEncContext *s,
67309e49 670 DCTELEM *block/*align 16*/, int n, int qscale);
9dbf1ddd 671 void (*dct_unquantize_mpeg2)(struct MpegEncContext *s,
67309e49 672 DCTELEM *block/*align 16*/, int n, int qscale);
3bf43d42 673 void (*dct_unquantize_h263)(struct MpegEncContext *s,
67309e49 674 DCTELEM *block/*align 16*/, int n, int qscale);
3bf43d42 675 void (*dct_unquantize)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
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676 DCTELEM *block/*align 16*/, int n, int qscale);
677 int (*dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
3a87ac94 678 int (*fast_dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
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679} MpegEncContext;
680
4d2858de 681
defdfc9a 682int DCT_common_init(MpegEncContext *s);
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683int MPV_common_init(MpegEncContext *s);
684void MPV_common_end(MpegEncContext *s);
685void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64]);
d6db1c9c 686int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx);
de6d9b64 687void MPV_frame_end(MpegEncContext *s);
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688int MPV_encode_init(AVCodecContext *avctx);
689int MPV_encode_end(AVCodecContext *avctx);
690int MPV_encode_picture(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data);
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691#ifdef HAVE_MMX
692void MPV_common_init_mmx(MpegEncContext *s);
693#endif
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694#ifdef ARCH_ALPHA
695void MPV_common_init_axp(MpegEncContext *s);
696#endif
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697#ifdef HAVE_MLIB
698void MPV_common_init_mlib(MpegEncContext *s);
699#endif
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700#ifdef HAVE_MMI
701void MPV_common_init_mmi(MpegEncContext *s);
702#endif
83f238cb 703#ifdef ARCH_ARMV4L
d43b10ec 704void MPV_common_init_armv4l(MpegEncContext *s);
83f238cb 705#endif
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706#ifdef ARCH_POWERPC
707void MPV_common_init_ppc(MpegEncContext *s);
708#endif
0c1a9eda 709extern void (*draw_edges)(uint8_t *buf, int wrap, int width, int height, int w);
0c1a9eda 710void ff_copy_bits(PutBitContext *pb, uint8_t *src, int length);
7f2fe444 711void ff_clean_intra_table_entries(MpegEncContext *s);
3d2e8cce 712void ff_init_scantable(uint8_t *, ScanTable *st, const uint8_t *src_scantable);
640950c7 713void ff_draw_horiz_band(MpegEncContext *s, int y, int h);
c009df3f 714void ff_emulated_edge_mc(uint8_t *buf, uint8_t *src, int linesize, int block_w, int block_h,
1457ab52 715 int src_x, int src_y, int w, int h);
bb463d81 716#define END_NOT_FOUND -100
b7a22d84 717int ff_combine_frame( MpegEncContext *s, int next, uint8_t **buf, int *buf_size);
7a06ff14 718void ff_mpeg_flush(AVCodecContext *avctx);
7bc9090a 719void ff_print_debug_info(MpegEncContext *s, Picture *pict);
d6eb3c50 720void ff_write_quant_matrix(PutBitContext *pb, int16_t *matrix);
59b571c1 721
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722void ff_er_frame_start(MpegEncContext *s);
723void ff_er_frame_end(MpegEncContext *s);
724void ff_er_add_slice(MpegEncContext *s, int startx, int starty, int endx, int endy, int status);
725
726
a33c7159 727extern enum PixelFormat ff_yuv420p_list[2];
de6d9b64 728
7d1c3fc1 729void ff_init_block_index(MpegEncContext *s);
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730
731static inline void ff_update_block_index(MpegEncContext *s){
732 s->block_index[0]+=2;
733 s->block_index[1]+=2;
734 s->block_index[2]+=2;
735 s->block_index[3]+=2;
736 s->block_index[4]++;
737 s->block_index[5]++;
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738 s->dest[0]+= 16;
739 s->dest[1]+= 8;
740 s->dest[2]+= 8;
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741}
742
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743static inline int get_bits_diff(MpegEncContext *s){
744 const int bits= get_bit_count(&s->pb);
745 const int last= s->last_bits;
746
747 s->last_bits = bits;
748
749 return bits - last;
750}
4d2858de 751
de6d9b64 752/* motion_est.c */
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753void ff_estimate_p_frame_motion(MpegEncContext * s,
754 int mb_x, int mb_y);
755void ff_estimate_b_frame_motion(MpegEncContext * s,
756 int mb_x, int mb_y);
757int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type);
758void ff_fix_long_p_mvs(MpegEncContext * s);
759void ff_fix_long_b_mvs(MpegEncContext * s, int16_t (*mv_table)[2], int f_code, int type);
1457ab52 760void ff_init_me(MpegEncContext *s);
f5fb6b34 761int ff_pre_estimate_p_frame_motion(MpegEncContext * s, int mb_x, int mb_y);
de6d9b64 762
4d2858de 763
de6d9b64 764/* mpeg12.c */
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765extern const int16_t ff_mpeg1_default_intra_matrix[64];
766extern const int16_t ff_mpeg1_default_non_intra_matrix[64];
767extern uint8_t ff_mpeg1_dc_scale_table[128];
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768
769void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
770void mpeg1_encode_mb(MpegEncContext *s,
771 DCTELEM block[6][64],
772 int motion_x, int motion_y);
0151a6f5 773void ff_mpeg1_encode_init(MpegEncContext *s);
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774void ff_mpeg1_encode_slice_header(MpegEncContext *s);
775void ff_mpeg1_clean_buffers(MpegEncContext *s);
de6d9b64 776
4d2858de 777
277f4827 778/** RLTable. */
de6d9b64 779typedef struct RLTable {
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780 int n; ///< number of entries of table_vlc minus 1
781 int last; ///< number of values for last = 0
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782 const uint16_t (*table_vlc)[2];
783 const int8_t *table_run;
784 const int8_t *table_level;
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785 uint8_t *index_run[2]; ///< encoding only
786 int8_t *max_level[2]; ///< encoding & decoding
787 int8_t *max_run[2]; ///< encoding & decoding
788 VLC vlc; ///< decoding only deprected FIXME remove
789 RL_VLC_ELEM *rl_vlc[32]; ///< decoding only
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790} RLTable;
791
792void init_rl(RLTable *rl);
793void init_vlc_rl(RLTable *rl);
794
3232bc88 795static inline int get_rl_index(const RLTable *rl, int last, int run, int level)
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796{
797 int index;
798 index = rl->index_run[last][run];
799 if (index >= rl->n)
800 return rl->n;
801 if (level > rl->max_level[last][run])
802 return rl->n;
803 return index + level - 1;
804}
805
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806extern uint8_t ff_mpeg4_y_dc_scale_table[32];
807extern uint8_t ff_mpeg4_c_dc_scale_table[32];
808extern const int16_t ff_mpeg4_default_intra_matrix[64];
809extern const int16_t ff_mpeg4_default_non_intra_matrix[64];
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810int ff_h263_decode_init(AVCodecContext *avctx);
811int ff_h263_decode_frame(AVCodecContext *avctx,
812 void *data, int *data_size,
0c1a9eda 813 uint8_t *buf, int buf_size);
1457ab52 814int ff_h263_decode_end(AVCodecContext *avctx);
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815void h263_encode_mb(MpegEncContext *s,
816 DCTELEM block[6][64],
817 int motion_x, int motion_y);
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818void mpeg4_encode_mb(MpegEncContext *s,
819 DCTELEM block[6][64],
820 int motion_x, int motion_y);
de6d9b64 821void h263_encode_picture_header(MpegEncContext *s, int picture_number);
44a2950f 822void ff_flv_encode_picture_header(MpegEncContext *s, int picture_number);
644d98a4 823int h263_encode_gob_header(MpegEncContext * s, int mb_line);
0c1a9eda 824int16_t *h263_pred_motion(MpegEncContext * s, int block,
de6d9b64 825 int *px, int *py);
0e15384d 826void mpeg4_pred_ac(MpegEncContext * s, DCTELEM *block, int n,
de6d9b64 827 int dir);
91029be7 828void ff_set_mpeg4_time(MpegEncContext * s, int picture_number);
de6d9b64 829void mpeg4_encode_picture_header(MpegEncContext *s, int picture_number);
45870f57 830void h263_encode_init(MpegEncContext *s);
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831void h263_decode_init_vlc(MpegEncContext *s);
832int h263_decode_picture_header(MpegEncContext *s);
4d2858de 833int ff_h263_decode_gob_header(MpegEncContext *s);
b704e742 834int ff_mpeg4_decode_picture_header(MpegEncContext * s, GetBitContext *gb);
7d1c3fc1 835void ff_h263_update_motion_val(MpegEncContext * s);
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836
837
de6d9b64 838int intel_h263_decode_picture_header(MpegEncContext *s);
d4f5d74a 839int flv_h263_decode_picture_header(MpegEncContext *s);
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840int ff_h263_decode_mb(MpegEncContext *s,
841 DCTELEM block[6][64]);
de6d9b64 842int h263_get_picture_format(int width, int height);
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843void ff_mpeg4_encode_video_packet_header(MpegEncContext *s);
844void ff_mpeg4_clean_buffers(MpegEncContext *s);
845void ff_mpeg4_stuffing(PutBitContext * pbc);
846void ff_mpeg4_init_partitions(MpegEncContext *s);
847void ff_mpeg4_merge_partitions(MpegEncContext *s);
c5d309f2 848void ff_clean_mpeg4_qscales(MpegEncContext *s);
9e4c6948 849void ff_clean_h263_qscales(MpegEncContext *s);
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850int ff_mpeg4_decode_partitions(MpegEncContext *s);
851int ff_mpeg4_get_video_packet_prefix_length(MpegEncContext *s);
852int ff_h263_resync(MpegEncContext *s);
853int ff_h263_get_gob_height(MpegEncContext *s);
7bc9090a 854int ff_mpeg4_set_direct_mv(MpegEncContext *s, int mx, int my);
67725183 855inline int ff_h263_round_chroma(int x);
4d2858de 856
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857
858/* rv10.c */
859void rv10_encode_picture_header(MpegEncContext *s, int picture_number);
860int rv_decode_dc(MpegEncContext *s, int n);
861
4d2858de 862
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863/* msmpeg4.c */
864void msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number);
ae40484c 865void msmpeg4_encode_ext_header(MpegEncContext * s);
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866void msmpeg4_encode_mb(MpegEncContext * s,
867 DCTELEM block[6][64],
868 int motion_x, int motion_y);
de6d9b64 869int msmpeg4_decode_picture_header(MpegEncContext * s);
ae40484c 870int msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
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871int ff_msmpeg4_decode_init(MpegEncContext *s);
872void ff_msmpeg4_encode_init(MpegEncContext *s);
1457ab52 873int ff_wmv2_decode_picture_header(MpegEncContext * s);
b1609412 874int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s);
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875void ff_wmv2_add_mb(MpegEncContext *s, DCTELEM block[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr);
876void ff_mspel_motion(MpegEncContext *s,
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877 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
878 uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
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879 int motion_x, int motion_y, int h);
880int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number);
881void ff_wmv2_encode_mb(MpegEncContext * s,
882 DCTELEM block[6][64],
883 int motion_x, int motion_y);
de6d9b64 884
c009df3f 885/* mjpeg.c */
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886int mjpeg_init(MpegEncContext *s);
887void mjpeg_close(MpegEncContext *s);
888void mjpeg_encode_mb(MpegEncContext *s,
889 DCTELEM block[6][64]);
890void mjpeg_picture_header(MpegEncContext *s);
891void mjpeg_picture_trailer(MpegEncContext *s);
8b4c7dbc 892
4d2858de 893
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894/* rate control */
895int ff_rate_control_init(MpegEncContext *s);
c5d309f2 896float ff_rate_estimate_qscale(MpegEncContext *s);
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897void ff_write_pass1_stats(MpegEncContext *s);
898void ff_rate_control_uninit(MpegEncContext *s);
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899double ff_eval(char *s, double *const_value, const char **const_name,
900 double (**func1)(void *, double), const char **func1_name,
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901 double (**func2)(void *, double, double), char **func2_name,
902 void *opaque);
903
8b4c7dbc 904
cd4af68a 905#endif /* AVCODEC_MPEGVIDEO_H */