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[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;
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;
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140#define IS_INTRA4x4(a) ((a)&MB_TYPE_INTRA4x4)
141#define IS_INTRA16x16(a) ((a)&MB_TYPE_INTRA16x16)
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142#define IS_PCM(a) ((a)&MB_TYPE_INTRA_PCM)
143#define IS_INTRA(a) ((a)&7)
0da71265 144#define IS_INTER(a) ((a)&(MB_TYPE_16x16|MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8))
7bc9090a 145#define IS_SKIP(a) ((a)&MB_TYPE_SKIP)
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146#define IS_INTRA_PCM(a) ((a)&MB_TYPE_INTRA_PCM)
147#define IS_INTERLACED(a) ((a)&MB_TYPE_INTERLACED)
148#define IS_DIRECT(a) ((a)&MB_TYPE_DIRECT2)
7bc9090a 149#define IS_GMC(a) ((a)&MB_TYPE_GMC)
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150#define IS_16X16(a) ((a)&MB_TYPE_16x16)
151#define IS_16X8(a) ((a)&MB_TYPE_16x8)
152#define IS_8X16(a) ((a)&MB_TYPE_8x16)
153#define IS_8X8(a) ((a)&MB_TYPE_8x8)
154#define IS_SUB_8X8(a) ((a)&MB_TYPE_16x16) //note reused
155#define IS_SUB_8X4(a) ((a)&MB_TYPE_16x8) //note reused
156#define IS_SUB_4X8(a) ((a)&MB_TYPE_8x16) //note reused
157#define IS_SUB_4X4(a) ((a)&MB_TYPE_8x8) //note reused
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158#define IS_ACPRED(a) ((a)&MB_TYPE_ACPRED)
159#define IS_QUANT(a) ((a)&MB_TYPE_QUANT)
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160#define IS_DIR(a, part, list) ((a) & (MB_TYPE_P0L0<<((part)+2*(list))))
161#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 162#define HAS_CBP(a) ((a)&MB_TYPE_CBP)
0da71265 163
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164 int field_poc[2]; ///< h264 top/bottom POC
165 int poc; ///< h264 frame POC
166 int frame_num; ///< h264 frame_num
167 int pic_id; ///< h264 pic_num or long_term_pic_idx
168 int long_ref; ///< 1->long term reference 0->short term reference
169
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170 int mb_var_sum; ///< sum of MB variance for current frame
171 int mc_mb_var_sum; ///< motion compensated MB variance for current frame
172 uint16_t *mb_var; ///< Table for MB variances
173 uint16_t *mc_mb_var; ///< Table for motion compensated MB variances
174 uint8_t *mb_mean; ///< Table for MB luminance
8fc7c993 175 int32_t *mb_cmp_score; ///< Table for MB cmp scores, for mb decission FIXME remove
0d1e9246 176 int b_frame_score; /* */
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177} Picture;
178
d7425f59 179typedef struct ParseContext{
0c1a9eda 180 uint8_t *buffer;
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181 int index;
182 int last_index;
183 int buffer_size;
bb463d81 184 uint32_t state; ///< contains the last few bytes in MSB order
d7425f59 185 int frame_start_found;
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186 int overread; ///< the number of bytes which where irreversibly read from the next frame
187 int overread_index; ///< the index into ParseContext.buffer of the overreaded bytes
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188} ParseContext;
189
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190struct MpegEncContext;
191
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192/**
193 * Motion estimation context.
194 */
1457ab52 195typedef struct MotionEstContext{
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196 int skip; ///< set if ME is skiped for the current MB
197 int co_located_mv[4][2]; ///< mv from last p frame for direct mode ME
1457ab52 198 int direct_basis_mv[4][2];
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199 uint8_t *scratchpad; ///< data area for the me algo, so that the ME doesnt need to malloc/free
200 uint32_t *map; ///< map to avoid duplicate evaluations
201 uint32_t *score_map; ///< map to store the scores
1457ab52 202 int map_generation;
826f429a 203 int pre_penalty_factor;
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204 int penalty_factor;
205 int sub_penalty_factor;
67725183 206 int mb_penalty_factor;
277f4827 207 int pre_pass; ///< = 1 for the pre pass
826f429a 208 int dia_size;
30952237 209 uint8_t (*mv_penalty)[MAX_MV*2+1]; ///< amount of bits needed to encode a MV
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210 int (*sub_motion_search)(struct MpegEncContext * s,
211 int *mx_ptr, int *my_ptr, int dmin,
212 int xmin, int ymin, int xmax, int ymax,
213 int pred_x, int pred_y, Picture *ref_picture,
30952237 214 int n, int size, uint8_t * const mv_penalty);
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215 int (*motion_search[7])(struct MpegEncContext * s, int block,
216 int *mx_ptr, int *my_ptr,
217 int P[10][2], int pred_x, int pred_y,
826f429a 218 int xmin, int ymin, int xmax, int ymax, Picture *ref_picture, int16_t (*last_mv)[2],
30952237 219 int ref_mv_scale, uint8_t * const mv_penalty);
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220 int (*pre_motion_search)(struct MpegEncContext * s, int block,
221 int *mx_ptr, int *my_ptr,
222 int P[10][2], int pred_x, int pred_y,
b07a5980 223 int xmin, int ymin, int xmax, int ymax, Picture *ref_picture, int16_t (*last_mv)[2],
30952237 224 int ref_mv_scale, uint8_t * const mv_penalty);
67725183 225 int (*get_mb_score)(struct MpegEncContext * s, int mx, int my, int pred_x, int pred_y, Picture *ref_picture,
30952237 226 uint8_t * const mv_penalty);
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227}MotionEstContext;
228
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229/**
230 * MpegEncContext.
231 */
de6d9b64 232typedef struct MpegEncContext {
58f26ba9 233 struct AVCodecContext *avctx;
de6d9b64 234 /* the following parameters must be initialized before encoding */
277f4827 235 int width, height;///< picture size. must be a multiple of 16
de6d9b64 236 int gop_size;
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237 int intra_only; ///< if true, only intra pictures are generated
238 int bit_rate; ///< wanted bit rate
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239 enum OutputFormat out_format; ///< output format
240 int h263_pred; ///< use mpeg4/h263 ac/dc predictions
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241
242/* the following codec id fields are deprecated in favor of codec_id */
277f4827 243 int h263_plus; ///< h263 plus headers
277f4827 244 int h263_msmpeg4; ///< generate MSMPEG4 compatible stream (deprecated, use msmpeg4_version instead)
d4f5d74a 245 int h263_flv; ///< use flv h263 header
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246
247 int codec_id; /* see CODEC_ID_xxx */
277f4827 248 int fixed_qscale; ///< fixed qscale if non zero
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249 int encoding; ///< true if we are encoding (vs decoding)
250 int flags; ///< AVCodecContext.flags (HQ, MV4, ...)
251 int max_b_frames; ///< max number of b-frames for encoding
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252 int luma_elim_threshold;
253 int chroma_elim_threshold;
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254 int strict_std_compliance; ///< strictly follow the std (MPEG4, ...)
255 int workaround_bugs; ///< workaround bugs in encoders which cannot be detected automatically
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256 /* the following fields are managed internally by the encoder */
257
277f4827 258 /** bit output */
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259 PutBitContext pb;
260
261 /* sequence parameters */
262 int context_initialized;
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263 int input_picture_number; ///< used to set pic->display_picture_number, shouldnt be used for/by anything else
264 int coded_picture_number; ///< used to set pic->coded_picture_number, shouldnt be used for/by anything else
265 int picture_number; //FIXME remove, unclear definition
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266 int picture_in_gop_number; ///< 0-> first pic in gop, ...
267 int b_frames_since_non_b; ///< used for encoding, relative to not yet reordered input
268 int mb_width, mb_height; ///< number of MBs horizontally & vertically
7bc9090a 269 int mb_stride; ///< mb_width+1 used for some arrays to allow simple addressng of left & top MBs withoutt sig11
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270 int b8_stride; ///< 2*mb_width+1 used for some 8x8 block arrays to allow simple addressng
271 int b4_stride; ///< 4*mb_width+1 used for some 4x4 block arrays to allow simple addressng
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272 int h_edge_pos, v_edge_pos;///< horizontal / vertical position of the right/bottom edge (pixel replicateion)
273 int mb_num; ///< number of MBs of a picture
274 int linesize; ///< line size, in bytes, may be different from width
275 int uvlinesize; ///< line size, for chroma in bytes, may be different from width
b465449e 276 Picture *picture; ///< main picture buffer
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277 Picture **input_picture; ///< next pictures on display order for encoding
278 Picture **reordered_input_picture; ///< pointer to the next pictures in codedorder for encoding
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279
280 /**
281 * copy of the previous picture structure.
282 * note, linesize & data, might not match the previous picture (for field pictures)
283 */
284 Picture last_picture;
285
286 /**
287 * copy of the next picture structure.
288 * note, linesize & data, might not match the next picture (for field pictures)
289 */
290 Picture next_picture;
291
292 /**
293 * copy of the source picture structure for encoding.
294 * note, linesize & data, might not match the source picture (for field pictures)
295 */
296 Picture new_picture;
297
298 /**
299 * copy of the current picture structure.
300 * note, linesize & data, might not match the current picture (for field pictures)
301 */
277f4827 302 Picture current_picture; ///< buffer to store the decompressed current picture
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303
304 Picture *last_picture_ptr; ///< pointer to the previous picture.
305 Picture *next_picture_ptr; ///< pointer to the next picture (for bidir pred)
b536d0aa 306 Picture *current_picture_ptr; ///< pointer to the current picture
0c9bbaec 307 uint8_t *visualization_buffer[3]; //< temporary buffer vor MV visualization
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308 int last_dc[3]; ///< last DC values for MPEG1
309 int16_t *dc_val[3]; ///< used for mpeg4 DC prediction, all 3 arrays must be continuous
0da71265 310 int16_t dc_cache[4*5];
de6d9b64 311 int y_dc_scale, c_dc_scale;
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312 uint8_t *y_dc_scale_table; ///< qscale -> y_dc_scale table
313 uint8_t *c_dc_scale_table; ///< qscale -> c_dc_scale table
332f9ac4 314 const uint8_t *chroma_qscale_table; ///< qscale -> chroma_qscale (h263)
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315 uint8_t *coded_block; ///< used for coded block pattern prediction (msmpeg4v3, wmv1)
316 int16_t (*ac_val[3])[16]; ///< used for for mpeg4 AC prediction, all 3 arrays must be continuous
de6d9b64 317 int ac_pred;
277f4827 318 uint8_t *prev_pict_types; ///< previous picture types in bitstream order, used for mb skip
f943e138 319#define PREV_PICT_TYPES_BUFFER_SIZE 256
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320 int mb_skiped; ///< MUST BE SET only during DECODING
321 uint8_t *mbskip_table; /**< used to avoid copy if macroblock skipped (for black regions for example)
9dbcbd92 322 and used for b-frame encoding & decoding (contains skip table of next P Frame) */
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323 uint8_t *mbintra_table; ///< used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
324 uint8_t *cbp_table; ///< used to store cbp, ac_pred for partitioned decoding
325 uint8_t *pred_dir_table; ///< used to store pred_dir for partitioned decoding
f7b47594 326 uint8_t *allocated_edge_emu_buffer;
277f4827 327 uint8_t *edge_emu_buffer; ///< points into the middle of allocated_edge_emu_buffer
de6d9b64 328
277f4827 329 int qscale; ///< QP
332f9ac4 330 int chroma_qscale; ///< chroma QP
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331 int lambda; ///< lagrange multipler used in rate distortion
332 int lambda2; ///< (lambda*lambda) >> FF_LAMBDA_SHIFT
333 int *lambda_table;
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334 int adaptive_quant; ///< use adaptive quantization
335 int dquant; ///< qscale difference to prev qscale
336 int pict_type; ///< I_TYPE, P_TYPE, B_TYPE, ...
3aa102be 337 int last_pict_type;
277f4827 338 int last_non_b_pict_type; ///< used for mpeg4 gmc b-frames & ratecontrol
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339 int frame_rate_index;
340 /* motion compensation */
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341 int unrestricted_mv; ///< mv can point outside of the coded picture
342 int h263_long_vectors; ///< use horrible h263v1 long vector mode
0da71265 343 int decode; ///< if 0 then decoding will be skiped (for encoding b frames for example)
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344
345 DSPContext dsp; ///< pointers for accelerated dsp fucntions
346 int f_code; ///< forward MV resolution
347 int b_code; ///< backward MV resolution for B Frames (mpeg4)
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348 int16_t (*p_mv_table_base)[2];
349 int16_t (*b_forw_mv_table_base)[2];
350 int16_t (*b_back_mv_table_base)[2];
351 int16_t (*b_bidir_forw_mv_table_base)[2];
352 int16_t (*b_bidir_back_mv_table_base)[2];
353 int16_t (*b_direct_mv_table_base)[2];
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354 int16_t (*p_mv_table)[2]; ///< MV table (1MV per MB) p-frame encoding
355 int16_t (*b_forw_mv_table)[2]; ///< MV table (1MV per MB) forward mode b-frame encoding
356 int16_t (*b_back_mv_table)[2]; ///< MV table (1MV per MB) backward mode b-frame encoding
357 int16_t (*b_bidir_forw_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
358 int16_t (*b_bidir_back_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
359 int16_t (*b_direct_mv_table)[2]; ///< MV table (1MV per MB) direct mode b-frame encoding
360 int me_method; ///< ME algorithm
1fb4890b 361 int scene_change_score;
de6d9b64 362 int mv_dir;
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363#define MV_DIR_BACKWARD 1
364#define MV_DIR_FORWARD 2
277f4827 365#define MV_DIRECT 4 ///< bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4)
de6d9b64 366 int mv_type;
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367#define MV_TYPE_16X16 0 ///< 1 vector for the whole mb
368#define MV_TYPE_8X8 1 ///< 4 vectors (h263, mpeg4 4MV)
369#define MV_TYPE_16X8 2 ///< 2 vectors, one per 16x8 block
370#define MV_TYPE_FIELD 3 ///< 2 vectors, one per field
371#define MV_TYPE_DMV 4 ///< 2 vectors, special mpeg2 Dual Prime Vectors
372 /**motion vectors for a macroblock
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373 first coordinate : 0 = forward 1 = backward
374 second " : depend on type
375 third " : 0 = x, 1 = y
376 */
377 int mv[2][4][2];
378 int field_select[2][2];
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379 int last_mv[2][2][2]; ///< last MV, used for MV prediction in MPEG1 & B-frame MPEG4
380 uint8_t *fcode_tab; ///< smallest fcode needed for each MV
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381
382 MotionEstContext me;
de6d9b64 383
277f4827 384 int no_rounding; /**< apply no rounding to motion compensation (MPEG4, msmpeg4, ...)
91029be7 385 for b-frames rounding mode is allways 0 */
de6d9b64 386
277f4827 387 int hurry_up; /**< when set to 1 during decoding, b frames will be skiped
2417652e 388 when set to 2 idct/dequant will be skipped too */
c5d309f2 389
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390 /* macroblock layer */
391 int mb_x, mb_y;
9b8709d1 392 int mb_skip_run;
de6d9b64 393 int mb_intra;
7bc9090a 394 uint8_t *mb_type; ///< Table for MB type FIXME remove and use picture->mb_type
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395#define MB_TYPE_INTRA 0x01
396#define MB_TYPE_INTER 0x02
397#define MB_TYPE_INTER4V 0x04
398#define MB_TYPE_SKIPED 0x08
7bc9090a 399//#define MB_TYPE_GMC 0x10
7f2fe444 400
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401#define MB_TYPE_DIRECT 0x10
402#define MB_TYPE_FORWARD 0x20
9dbcbd92 403#define MB_TYPE_BACKWARD 0x40
ba6802de 404#define MB_TYPE_BIDIR 0x80
4278e7a6 405
277f4827 406 int block_index[6]; ///< index to current MB in block based arrays with edges
4278e7a6 407 int block_wrap[6];
7d1c3fc1 408 uint8_t *dest[3];
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409
410 int *mb_index2xy; ///< mb_index -> mb_x + mb_y*mb_stride
4278e7a6 411
277f4827 412 /** matrix transmitted in the bitstream */
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413 uint16_t intra_matrix[64];
414 uint16_t chroma_intra_matrix[64];
415 uint16_t inter_matrix[64];
416 uint16_t chroma_inter_matrix[64];
1984f635 417#define QUANT_BIAS_SHIFT 8
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418 int intra_quant_bias; ///< bias for the quantizer
419 int inter_quant_bias; ///< bias for the quantizer
420 int min_qcoeff; ///< minimum encodable coefficient
421 int max_qcoeff; ///< maximum encodable coefficient
422 int ac_esc_length; ///< num of bits needed to encode the longest esc
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423 uint8_t *intra_ac_vlc_length;
424 uint8_t *intra_ac_vlc_last_length;
425 uint8_t *inter_ac_vlc_length;
426 uint8_t *inter_ac_vlc_last_length;
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427 uint8_t *luma_dc_vlc_length;
428 uint8_t *chroma_dc_vlc_length;
c442d75c 429#define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level))
477ab036 430
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431 int coded_score[6];
432
277f4827 433 /** precomputed matrix (combine qscale and DCT renorm) */
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434 int (*q_intra_matrix)[64];
435 int (*q_inter_matrix)[64];
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436 /** identical to the above but for MMX & these are not permutated, second 64 entries are bias*/
437 uint16_t (*q_intra_matrix16)[2][64];
438 uint16_t (*q_inter_matrix16)[2][64];
277f4827 439 int block_last_index[6]; ///< last non zero coefficient in block
2ad1516a 440 /* scantables */
05c4072b 441 ScanTable __align8 intra_scantable;
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442 ScanTable intra_h_scantable;
443 ScanTable intra_v_scantable;
277f4827 444 ScanTable inter_scantable; ///< if inter == intra then intra should be used to reduce tha cache usage
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445
446 /* noise reduction */
447 int (*dct_error_sum)[64];
448 int dct_count[2];
449 uint16_t (*dct_offset)[64];
de6d9b64 450
277f4827 451 void *opaque; ///< private data for the user
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452
453 /* bit rate control */
9dbcbd92 454 int I_frame_bits; //FIXME used in mpeg12 ...
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455 int64_t wanted_bits;
456 int64_t total_bits;
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457 int frame_bits; ///< bits used for the current frame
458 RateControlContext rc_context; ///< contains stuff only accessed in ratecontrol.c
9cdd6a24 459
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460 /* statistics, used for 2-pass encoding */
461 int mv_bits;
462 int header_bits;
463 int i_tex_bits;
464 int p_tex_bits;
465 int i_count;
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466 int f_count;
467 int b_count;
098eefe1 468 int skip_count;
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469 int misc_bits; ///< cbp, mb_type
470 int last_bits; ///< temp var used for calculating the above vars
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471
472 /* error concealment / resync */
7bc9090a 473 int error_count;
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474 uint8_t *error_status_table; ///< table of the error status of each MB
475#define VP_START 1 ///< current MB is the first after a resync marker
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476#define AC_ERROR 2
477#define DC_ERROR 4
478#define MV_ERROR 8
479#define AC_END 16
480#define DC_END 32
481#define MV_END 64
482//FIXME some prefix?
483
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484 int resync_mb_x; ///< x position of last resync marker
485 int resync_mb_y; ///< y position of last resync marker
486 GetBitContext last_resync_gb; ///< used to search for the next resync marker
487 int mb_num_left; ///< number of MBs left in this video packet (for partitioned Slices only)
488 int next_p_frame_damaged; ///< set if the next p frame is damaged, to avoid showing trashed b frames
7f2fe444 489 int error_resilience;
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490
491 ParseContext parse_context;
098eefe1 492
102d3908 493 /* H.263 specific */
644d98a4 494 int gob_index;
dba019da 495 int obmc; ///< overlapped block motion compensation
d140623f 496
544286b3 497 /* H.263+ specific */
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498 int umvplus; ///< == H263+ && unrestricted_mv
499 int h263_aic; ///< Advanded INTRA Coding (AIC)
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500 int h263_aic_dir; ///< AIC direction: 0 = left, 1 = top
501 int h263_slice_structured;
dba019da 502 int alt_inter_vlc; ///< alternative inter vlc
68b94c35 503 int modified_quant;
ba58dabc 504 int loop_filter;
544286b3 505
de6d9b64 506 /* mpeg4 specific */
6f91bcd1 507 int time_increment_resolution;
277f4827 508 int time_increment_bits; ///< number of bits to represent the fractional part of time
9dbcbd92 509 int last_time_base;
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510 int time_base; ///< time in seconds of last I,P,S Frame
511 int64_t time; ///< time of current frame
0c1a9eda 512 int64_t last_non_b_time;
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513 uint16_t pp_time; ///< time distance between the last 2 p,s,i frames
514 uint16_t pb_time; ///< time distance between the last b and p,s,i frame
0c1a9eda 515 uint16_t pp_field_time;
277f4827 516 uint16_t pb_field_time; ///< like above, just for interlaced
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517 int shape;
518 int vol_sprite_usage;
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519 int sprite_width;
520 int sprite_height;
521 int sprite_left;
522 int sprite_top;
523 int sprite_brightness_change;
73c8e514 524 int num_sprite_warping_points;
44eb4951 525 int real_sprite_warping_points;
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526 int sprite_offset[2][2]; ///< sprite offset[isChroma][isMVY]
527 int sprite_delta[2][2]; ///< sprite_delta [isY][isMVY]
528 int sprite_shift[2]; ///< sprite shift [isChroma]
73c8e514 529 int mcsel;
1a565432 530 int quant_precision;
277f4827 531 int quarter_sample; ///< 1->qpel, 0->half pel ME/MC
cc9ba006 532 int scalability;
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533 int hierachy_type;
534 int enhancement_type;
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535 int new_pred;
536 int reduced_res_vop;
0da71265 537 int aspect_ratio_info; //FIXME remove
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538 int sprite_warping_accuracy;
539 int low_latency_sprite;
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540 int data_partitioning; ///< data partitioning flag from header
541 int partitioned_frame; ///< is current frame partitioned
542 int rvlc; ///< reversible vlc
543 int resync_marker; ///< could this stream contain resync markers
544 int low_delay; ///< no reordering needed / has no b-frames
1ff662cc 545 int vo_type;
277f4827 546 int vol_control_parameters; ///< does the stream contain the low_delay flag, used to workaround buggy encoders
34790165 547 int intra_dc_threshold; ///< QP above whch the ac VLC should be used for intra dc
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548 PutBitContext tex_pb; ///< used for data partitioned VOPs
549 PutBitContext pb2; ///< used for data partitioned VOPs
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550#define PB_BUFFER_SIZE 1024*256
551 uint8_t *tex_pb_buffer;
552 uint8_t *pb2_buffer;
d930ef19 553 int mpeg_quant;
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554 int16_t (*field_mv_table)[2][2]; ///< used for interlaced b frame decoding
555 int8_t (*field_select_table)[2]; ///< wtf, no really another table for interlaced b frames
556 int t_frame; ///< time distance of first I -> B, used for interlaced b frames
557 int padding_bug_score; ///< used to detect the VERY common padding bug in MPEG4
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558
559 /* divx specific, used to workaround (many) bugs in divx5 */
560 int divx_version;
561 int divx_build;
d5a21172 562 int divx_packed;
eec1c6b9 563#define BITSTREAM_BUFFER_SIZE 1024*256
0c1a9eda 564 uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
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565 int bitstream_buffer_size;
566
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567 int xvid_build;
568
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569 /* lavc specific stuff, used to workaround bugs in libavcodec */
570 int ffmpeg_version;
571 int lavc_build;
572
de6d9b64 573 /* RV10 specific */
277f4827 574 int rv10_version; ///< RV10 version: 0 or 3
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575 int rv10_first_dc_coded[3];
576
577 /* MJPEG specific */
578 struct MJpegContext *mjpeg_ctx;
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579 int mjpeg_vsample[3]; ///< vertical sampling factors, default = {2, 1, 1}
580 int mjpeg_hsample[3]; ///< horizontal sampling factors, default = {2, 1, 1}
581 int mjpeg_write_tables; ///< do we want to have quantisation- and huffmantables in the jpeg file ?
582 int mjpeg_data_only_frames; ///< frames only with SOI, SOS and EOI markers
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583
584 /* MSMPEG4 specific */
585 int mv_table_index;
586 int rl_table_index;
587 int rl_chroma_table_index;
588 int dc_table_index;
589 int use_skip_mb_code;
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590 int slice_height; ///< in macroblocks
591 int first_slice_line; ///< used in mpeg4 too to handle resync markers
ae40484c 592 int flipflop_rounding;
277f4827 593 int msmpeg4_version; ///< 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8
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594 int per_mb_rl_table;
595 int esc3_level_length;
596 int esc3_run_length;
277f4827 597 /** [mb_intra][isChroma][level][run][last] */
6b460aa3 598 int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2];
de0f2f4c 599 int inter_intra_pred;
1457ab52 600 int mspel;
0151a6f5 601
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602 /* decompression specific */
603 GetBitContext gb;
604
1e491e29 605 /* Mpeg1 specific */
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606 int fake_picture_number; ///< picture number at the bitstream frame rate
607 int gop_picture_number; ///< index of the first picture of a GOP based on fake_pic_num & mpeg1 specific
608 int last_mv_dir; ///< last mv_dir, used for b frame encoding
0da71265 609 int broken_link; ///< no_output_of_prior_pics_flag
d60a8f85 610 uint8_t *vbv_delay_ptr; ///< pointer to vbv_delay in the bitstream
1e491e29 611
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612 /* MPEG2 specific - I wish I had not to support this mess. */
613 int progressive_sequence;
614 int mpeg_f_code[2][2];
615 int picture_structure;
616/* picture type */
617#define PICT_TOP_FIELD 1
618#define PICT_BOTTOM_FIELD 2
619#define PICT_FRAME 3
620
621 int intra_dc_precision;
622 int frame_pred_frame_dct;
623 int top_field_first;
624 int concealment_motion_vectors;
625 int q_scale_type;
626 int intra_vlc_format;
627 int alternate_scan;
628 int repeat_first_field;
629 int chroma_420_type;
630 int progressive_frame;
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631 int full_pel[2];
632 int interlaced_dct;
de6d9b64 633 int first_slice;
c3bf0288 634 int first_field; ///< is 1 for the first field of a field picture 0 otherwise
ba58dabc 635
644d98a4 636 /* RTP specific */
e4eadb4b 637 int rtp_mode;
ba58dabc 638
0c1a9eda 639 uint8_t *ptr_lastgob;
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640 int swap_uv;//vcr2 codec is mpeg2 varint with UV swaped
641 short * pblocks[12];
644d98a4 642
277f4827 643 DCTELEM (*block)[64]; ///< points to one of the following blocks
45686da2 644 DCTELEM (*blocks)[6][64]; // for HQ mode we need to keep the best block
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645 int (*decode_mb)(struct MpegEncContext *s, DCTELEM block[6][64]); // used by some codecs to avoid a switch()
646#define SLICE_OK 0
647#define SLICE_ERROR -1
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648#define SLICE_END -2 ///<end marker found
649#define SLICE_NOEND -3 ///<no end marker or error found but mb count exceeded
4d2858de 650
d50635cd 651 void (*dct_unquantize_mpeg1_intra)(struct MpegEncContext *s,
67309e49 652 DCTELEM *block/*align 16*/, int n, int qscale);
d50635cd 653 void (*dct_unquantize_mpeg1_inter)(struct MpegEncContext *s,
67309e49 654 DCTELEM *block/*align 16*/, int n, int qscale);
d50635cd 655 void (*dct_unquantize_mpeg2_intra)(struct MpegEncContext *s,
67309e49 656 DCTELEM *block/*align 16*/, int n, int qscale);
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657 void (*dct_unquantize_mpeg2_inter)(struct MpegEncContext *s,
658 DCTELEM *block/*align 16*/, int n, int qscale);
659 void (*dct_unquantize_h263_intra)(struct MpegEncContext *s,
660 DCTELEM *block/*align 16*/, int n, int qscale);
661 void (*dct_unquantize_h263_inter)(struct MpegEncContext *s,
662 DCTELEM *block/*align 16*/, int n, int qscale);
663 void (*dct_unquantize_intra)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
664 DCTELEM *block/*align 16*/, int n, int qscale);
665 void (*dct_unquantize_inter)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
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666 DCTELEM *block/*align 16*/, int n, int qscale);
667 int (*dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
3a87ac94 668 int (*fast_dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
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669} MpegEncContext;
670
4d2858de 671
defdfc9a 672int DCT_common_init(MpegEncContext *s);
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673int MPV_common_init(MpegEncContext *s);
674void MPV_common_end(MpegEncContext *s);
675void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64]);
d6db1c9c 676int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx);
de6d9b64 677void MPV_frame_end(MpegEncContext *s);
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678int MPV_encode_init(AVCodecContext *avctx);
679int MPV_encode_end(AVCodecContext *avctx);
680int MPV_encode_picture(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data);
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681#ifdef HAVE_MMX
682void MPV_common_init_mmx(MpegEncContext *s);
683#endif
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684#ifdef ARCH_ALPHA
685void MPV_common_init_axp(MpegEncContext *s);
686#endif
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687#ifdef HAVE_MLIB
688void MPV_common_init_mlib(MpegEncContext *s);
689#endif
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690#ifdef HAVE_MMI
691void MPV_common_init_mmi(MpegEncContext *s);
692#endif
83f238cb 693#ifdef ARCH_ARMV4L
d43b10ec 694void MPV_common_init_armv4l(MpegEncContext *s);
83f238cb 695#endif
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696#ifdef ARCH_POWERPC
697void MPV_common_init_ppc(MpegEncContext *s);
698#endif
0c1a9eda 699extern void (*draw_edges)(uint8_t *buf, int wrap, int width, int height, int w);
0c1a9eda 700void ff_copy_bits(PutBitContext *pb, uint8_t *src, int length);
7f2fe444 701void ff_clean_intra_table_entries(MpegEncContext *s);
3d2e8cce 702void ff_init_scantable(uint8_t *, ScanTable *st, const uint8_t *src_scantable);
640950c7 703void ff_draw_horiz_band(MpegEncContext *s, int y, int h);
c009df3f 704void ff_emulated_edge_mc(uint8_t *buf, uint8_t *src, int linesize, int block_w, int block_h,
1457ab52 705 int src_x, int src_y, int w, int h);
bb463d81 706#define END_NOT_FOUND -100
b7a22d84 707int ff_combine_frame( MpegEncContext *s, int next, uint8_t **buf, int *buf_size);
7a06ff14 708void ff_mpeg_flush(AVCodecContext *avctx);
0c9bbaec 709void ff_print_debug_info(MpegEncContext *s, AVFrame *pict);
d6eb3c50 710void ff_write_quant_matrix(PutBitContext *pb, int16_t *matrix);
5f194811 711int ff_find_unused_picture(MpegEncContext *s, int shared);
821cb11f 712void ff_denoise_dct(MpegEncContext *s, DCTELEM *block);
59b571c1 713
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714void ff_er_frame_start(MpegEncContext *s);
715void ff_er_frame_end(MpegEncContext *s);
716void ff_er_add_slice(MpegEncContext *s, int startx, int starty, int endx, int endy, int status);
717
718
a33c7159 719extern enum PixelFormat ff_yuv420p_list[2];
de6d9b64 720
7d1c3fc1 721void ff_init_block_index(MpegEncContext *s);
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722
723static inline void ff_update_block_index(MpegEncContext *s){
724 s->block_index[0]+=2;
725 s->block_index[1]+=2;
726 s->block_index[2]+=2;
727 s->block_index[3]+=2;
728 s->block_index[4]++;
729 s->block_index[5]++;
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730 s->dest[0]+= 16;
731 s->dest[1]+= 8;
732 s->dest[2]+= 8;
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733}
734
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735static inline int get_bits_diff(MpegEncContext *s){
736 const int bits= get_bit_count(&s->pb);
737 const int last= s->last_bits;
738
739 s->last_bits = bits;
740
741 return bits - last;
742}
4d2858de 743
de6d9b64 744/* motion_est.c */
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745void ff_estimate_p_frame_motion(MpegEncContext * s,
746 int mb_x, int mb_y);
747void ff_estimate_b_frame_motion(MpegEncContext * s,
748 int mb_x, int mb_y);
749int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type);
750void ff_fix_long_p_mvs(MpegEncContext * s);
751void ff_fix_long_b_mvs(MpegEncContext * s, int16_t (*mv_table)[2], int f_code, int type);
1457ab52 752void ff_init_me(MpegEncContext *s);
f5fb6b34 753int ff_pre_estimate_p_frame_motion(MpegEncContext * s, int mb_x, int mb_y);
de6d9b64 754
4d2858de 755
de6d9b64 756/* mpeg12.c */
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757extern const int16_t ff_mpeg1_default_intra_matrix[64];
758extern const int16_t ff_mpeg1_default_non_intra_matrix[64];
759extern uint8_t ff_mpeg1_dc_scale_table[128];
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760
761void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
762void mpeg1_encode_mb(MpegEncContext *s,
763 DCTELEM block[6][64],
764 int motion_x, int motion_y);
0151a6f5 765void ff_mpeg1_encode_init(MpegEncContext *s);
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766void ff_mpeg1_encode_slice_header(MpegEncContext *s);
767void ff_mpeg1_clean_buffers(MpegEncContext *s);
de6d9b64 768
4d2858de 769
277f4827 770/** RLTable. */
de6d9b64 771typedef struct RLTable {
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772 int n; ///< number of entries of table_vlc minus 1
773 int last; ///< number of values for last = 0
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774 const uint16_t (*table_vlc)[2];
775 const int8_t *table_run;
776 const int8_t *table_level;
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777 uint8_t *index_run[2]; ///< encoding only
778 int8_t *max_level[2]; ///< encoding & decoding
779 int8_t *max_run[2]; ///< encoding & decoding
780 VLC vlc; ///< decoding only deprected FIXME remove
781 RL_VLC_ELEM *rl_vlc[32]; ///< decoding only
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782} RLTable;
783
784void init_rl(RLTable *rl);
785void init_vlc_rl(RLTable *rl);
786
3232bc88 787static inline int get_rl_index(const RLTable *rl, int last, int run, int level)
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788{
789 int index;
790 index = rl->index_run[last][run];
791 if (index >= rl->n)
792 return rl->n;
793 if (level > rl->max_level[last][run])
794 return rl->n;
795 return index + level - 1;
796}
797
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798extern uint8_t ff_mpeg4_y_dc_scale_table[32];
799extern uint8_t ff_mpeg4_c_dc_scale_table[32];
68b94c35 800extern uint8_t ff_aic_dc_scale_table[32];
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801extern const int16_t ff_mpeg4_default_intra_matrix[64];
802extern const int16_t ff_mpeg4_default_non_intra_matrix[64];
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803extern const uint8_t ff_h263_chroma_qscale_table[32];
804extern const uint8_t ff_h263_loop_filter_strength[32];
68b94c35 805
554daa24 806
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807int ff_h263_decode_init(AVCodecContext *avctx);
808int ff_h263_decode_frame(AVCodecContext *avctx,
809 void *data, int *data_size,
0c1a9eda 810 uint8_t *buf, int buf_size);
1457ab52 811int ff_h263_decode_end(AVCodecContext *avctx);
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812void h263_encode_mb(MpegEncContext *s,
813 DCTELEM block[6][64],
814 int motion_x, int motion_y);
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815void mpeg4_encode_mb(MpegEncContext *s,
816 DCTELEM block[6][64],
817 int motion_x, int motion_y);
de6d9b64 818void h263_encode_picture_header(MpegEncContext *s, int picture_number);
44a2950f 819void ff_flv_encode_picture_header(MpegEncContext *s, int picture_number);
ba58dabc 820void h263_encode_gob_header(MpegEncContext * s, int mb_line);
0c1a9eda 821int16_t *h263_pred_motion(MpegEncContext * s, int block,
de6d9b64 822 int *px, int *py);
0e15384d 823void mpeg4_pred_ac(MpegEncContext * s, DCTELEM *block, int n,
de6d9b64 824 int dir);
91029be7 825void ff_set_mpeg4_time(MpegEncContext * s, int picture_number);
de6d9b64 826void mpeg4_encode_picture_header(MpegEncContext *s, int picture_number);
45870f57 827void h263_encode_init(MpegEncContext *s);
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828void h263_decode_init_vlc(MpegEncContext *s);
829int h263_decode_picture_header(MpegEncContext *s);
4d2858de 830int ff_h263_decode_gob_header(MpegEncContext *s);
b704e742 831int ff_mpeg4_decode_picture_header(MpegEncContext * s, GetBitContext *gb);
7d1c3fc1 832void ff_h263_update_motion_val(MpegEncContext * s);
cdb4e730 833void ff_h263_loop_filter(MpegEncContext * s);
554daa24 834void ff_set_qscale(MpegEncContext * s, int qscale);
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835int ff_h263_decode_mba(MpegEncContext *s);
836void ff_h263_encode_mba(MpegEncContext *s);
b704e742 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]);
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842int ff_mpeg4_decode_mb(MpegEncContext *s,
843 DCTELEM block[6][64]);
de6d9b64 844int h263_get_picture_format(int width, int height);
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845void ff_mpeg4_encode_video_packet_header(MpegEncContext *s);
846void ff_mpeg4_clean_buffers(MpegEncContext *s);
847void ff_mpeg4_stuffing(PutBitContext * pbc);
848void ff_mpeg4_init_partitions(MpegEncContext *s);
849void ff_mpeg4_merge_partitions(MpegEncContext *s);
c5d309f2 850void ff_clean_mpeg4_qscales(MpegEncContext *s);
9e4c6948 851void ff_clean_h263_qscales(MpegEncContext *s);
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852int ff_mpeg4_decode_partitions(MpegEncContext *s);
853int ff_mpeg4_get_video_packet_prefix_length(MpegEncContext *s);
854int ff_h263_resync(MpegEncContext *s);
855int ff_h263_get_gob_height(MpegEncContext *s);
7bc9090a 856int ff_mpeg4_set_direct_mv(MpegEncContext *s, int mx, int my);
67725183 857inline int ff_h263_round_chroma(int x);
4d2858de 858
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859
860/* rv10.c */
861void rv10_encode_picture_header(MpegEncContext *s, int picture_number);
862int rv_decode_dc(MpegEncContext *s, int n);
863
4d2858de 864
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865/* msmpeg4.c */
866void msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number);
ae40484c 867void msmpeg4_encode_ext_header(MpegEncContext * s);
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868void msmpeg4_encode_mb(MpegEncContext * s,
869 DCTELEM block[6][64],
870 int motion_x, int motion_y);
de6d9b64 871int msmpeg4_decode_picture_header(MpegEncContext * s);
ae40484c 872int msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
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873int ff_msmpeg4_decode_init(MpegEncContext *s);
874void ff_msmpeg4_encode_init(MpegEncContext *s);
1457ab52 875int ff_wmv2_decode_picture_header(MpegEncContext * s);
b1609412 876int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s);
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877void ff_wmv2_add_mb(MpegEncContext *s, DCTELEM block[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr);
878void ff_mspel_motion(MpegEncContext *s,
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879 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
880 uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
1457ab52
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881 int motion_x, int motion_y, int h);
882int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number);
883void ff_wmv2_encode_mb(MpegEncContext * s,
884 DCTELEM block[6][64],
885 int motion_x, int motion_y);
de6d9b64 886
c009df3f 887/* mjpeg.c */
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888int mjpeg_init(MpegEncContext *s);
889void mjpeg_close(MpegEncContext *s);
890void mjpeg_encode_mb(MpegEncContext *s,
891 DCTELEM block[6][64]);
892void mjpeg_picture_header(MpegEncContext *s);
893void mjpeg_picture_trailer(MpegEncContext *s);
8b4c7dbc 894
4d2858de 895
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896/* rate control */
897int ff_rate_control_init(MpegEncContext *s);
c5d309f2 898float ff_rate_estimate_qscale(MpegEncContext *s);
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899void ff_write_pass1_stats(MpegEncContext *s);
900void ff_rate_control_uninit(MpegEncContext *s);
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901double ff_eval(char *s, double *const_value, const char **const_name,
902 double (**func1)(void *, double), const char **func1_name,
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903 double (**func2)(void *, double, double), char **func2_name,
904 void *opaque);
11dffbe1 905int ff_vbv_update(MpegEncContext *s, int frame_size);
3aa102be 906
8b4c7dbc 907
cd4af68a 908#endif /* AVCODEC_MPEGVIDEO_H */