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  1. /*
  2. * Generic DCT based hybrid video encoder
  3. * Copyright (c) 2000, 2001, 2002 Fabrice Bellard.
  4. *
  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.
  9. *
  10. * This library is distributed in the hope that it will be useful,
  11. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  13. * Lesser General Public License for more details.
  14. *
  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
  18. */
  19. #ifndef AVCODEC_MPEGVIDEO_H
  20. #define AVCODEC_MPEGVIDEO_H
  21. #define FRAME_SKIPED 100 // return value for header parsers if frame is not coded
  22. enum OutputFormat {
  23. FMT_MPEG1,
  24. FMT_H263,
  25. FMT_MJPEG,
  26. };
  27. #define MPEG_BUF_SIZE (16 * 1024)
  28. #define QMAT_SHIFT_MMX 19
  29. #define QMAT_SHIFT 25
  30. #define MAX_FCODE 7
  31. #define MAX_MV 2048
  32. #define REORDER_BUFFER_SIZE (FF_MAX_B_FRAMES+2)
  33. #define ME_MAP_SIZE 64
  34. #define ME_MAP_SHIFT 3
  35. #define ME_MAP_MV_BITS 11
  36. /* run length table */
  37. #define MAX_RUN 64
  38. #define MAX_LEVEL 64
  39. typedef struct Predictor{
  40. double coeff;
  41. double count;
  42. double decay;
  43. } Predictor;
  44. typedef struct RateControlEntry{
  45. int pict_type;
  46. int qscale;
  47. int mv_bits;
  48. int i_tex_bits;
  49. int p_tex_bits;
  50. int misc_bits;
  51. UINT64 expected_bits;
  52. int new_pict_type;
  53. float new_qscale;
  54. }RateControlEntry;
  55. typedef struct RateControlContext{
  56. FILE *stats_file;
  57. int num_entries;
  58. RateControlEntry *entry;
  59. }RateControlContext;
  60. typedef struct ReorderBuffer{
  61. UINT8 *picture[3];
  62. int pict_type;
  63. int qscale;
  64. int force_type;
  65. int picture_number;
  66. int picture_in_gop_number;
  67. } ReorderBuffer;
  68. typedef struct MpegEncContext {
  69. struct AVCodecContext *avctx;
  70. /* the following parameters must be initialized before encoding */
  71. int width, height; /* picture size. must be a multiple of 16 */
  72. int gop_size;
  73. int frame_rate; /* number of frames per second */
  74. int intra_only; /* if true, only intra pictures are generated */
  75. int bit_rate; /* wanted bit rate */
  76. int bit_rate_tolerance; /* amount of +- bits (>0)*/
  77. enum OutputFormat out_format; /* output format */
  78. int h263_pred; /* use mpeg4/h263 ac/dc predictions */
  79. /* the following codec id fields are deprecated in favor of codec_id */
  80. int h263_plus; /* h263 plus headers */
  81. int h263_rv10; /* use RV10 variation for H263 */
  82. int h263_msmpeg4; /* generate MSMPEG4 compatible stream (deprecated, use msmpeg4_version instead)*/
  83. int h263_intel; /* use I263 intel h263 header */
  84. int codec_id; /* see CODEC_ID_xxx */
  85. int fixed_qscale; /* fixed qscale if non zero */
  86. float qcompress; /* amount of qscale change between easy & hard scenes (0.0-1.0) */
  87. float qblur; /* amount of qscale smoothing over time (0.0-1.0) */
  88. int qmin; /* min qscale */
  89. int qmax; /* max qscale */
  90. int max_qdiff; /* max qscale difference between frames */
  91. int encoding; /* true if we are encoding (vs decoding) */
  92. int flags; /* AVCodecContext.flags (HQ, MV4, ...) */
  93. int force_input_type;/* 0= no force, otherwise I_TYPE, P_TYPE, ... */
  94. int max_b_frames; /* max number of b-frames for encoding */
  95. float b_quant_factor;/* qscale factor between ips and b frames */
  96. float b_quant_offset;/* qscale offset between ips and b frames */
  97. int rc_strategy;
  98. int b_frame_strategy;
  99. int luma_elim_threshold;
  100. int chroma_elim_threshold;
  101. int strict_std_compliance; /* strictly follow the std (MPEG4, ...) */
  102. int workaround_bugs; /* workaround bugs in encoders which cannot be detected automatically */
  103. /* the following fields are managed internally by the encoder */
  104. /* bit output */
  105. PutBitContext pb;
  106. /* sequence parameters */
  107. int context_initialized;
  108. int input_picture_number;
  109. int input_picture_in_gop_number; /* 0-> first pic in gop, ... */
  110. int picture_number;
  111. int fake_picture_number; /* picture number at the bitstream frame rate */
  112. int gop_picture_number; /* index of the first picture of a GOP based on fake_pic_num & mpeg1 specific */
  113. int picture_in_gop_number; /* 0-> first pic in gop, ... */
  114. int b_frames_since_non_b; /* used for encoding, relative to not yet reordered input */
  115. int mb_width, mb_height; /* number of MBs horizontally & vertically */
  116. int h_edge_pos, v_edge_pos;/* horizontal / vertical position of the right/bottom edge (pixel replicateion)*/
  117. int mb_num; /* number of MBs of a picture */
  118. int linesize; /* line size, in bytes, may be different from width */
  119. int uvlinesize; /* line size, for chroma in bytes, may be different from width */
  120. UINT8 *new_picture[3]; /* picture to be compressed */
  121. UINT8 *picture_buffer[REORDER_BUFFER_SIZE][3]; /* internal buffers used for reordering of input pictures */
  122. int picture_buffer_index;
  123. ReorderBuffer coded_order[REORDER_BUFFER_SIZE];
  124. UINT8 *last_picture[3]; /* previous picture */
  125. UINT8 *last_picture_base[3]; /* real start of the picture */
  126. UINT8 *next_picture[3]; /* previous picture (for bidir pred) */
  127. UINT8 *next_picture_base[3]; /* real start of the picture */
  128. UINT8 *aux_picture[3]; /* aux picture (for B frames only) */
  129. UINT8 *aux_picture_base[3]; /* real start of the picture */
  130. UINT8 *current_picture[3]; /* buffer to store the decompressed current picture */
  131. void *last_dr_opaque;
  132. void *next_dr_opaque;
  133. int ip_buffer_count; /* number of buffers, currently only >2 if dr1 is used */
  134. int num_available_buffers; /* is 0 at the start & after seeking, after the first I frame its 1 after next I/P 2 */
  135. int last_dc[3]; /* last DC values for MPEG1 */
  136. INT16 *dc_val[3]; /* used for mpeg4 DC prediction, all 3 arrays must be continuous */
  137. int y_dc_scale, c_dc_scale;
  138. UINT8 *y_dc_scale_table; /* qscale -> y_dc_scale table */
  139. UINT8 *c_dc_scale_table; /* qscale -> c_dc_scale table */
  140. UINT8 *coded_block; /* used for coded block pattern prediction (msmpeg4v3, wmv1)*/
  141. INT16 (*ac_val[3])[16]; /* used for for mpeg4 AC prediction, all 3 arrays must be continuous */
  142. int ac_pred;
  143. int mb_skiped; /* MUST BE SET only during DECODING */
  144. UINT8 *mbskip_table; /* used to avoid copy if macroblock skipped (for black regions for example)
  145. and used for b-frame encoding & decoding (contains skip table of next P Frame) */
  146. UINT8 *mbintra_table; /* used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding */
  147. UINT8 *cbp_table; /* used to store cbp, ac_pred for partitioned decoding */
  148. UINT8 *pred_dir_table; /* used to store pred_dir for partitioned decoding */
  149. INT8 *qscale_table; /* used to store qscale for partitioned decoding (& postprocessing FIXME export) */
  150. UINT8 *edge_emu_buffer;
  151. int input_qscale; /* qscale prior to reordering of frames */
  152. int input_pict_type; /* pict_type prior to reordering of frames */
  153. int force_type; /* 0= no force, otherwise I_TYPE, P_TYPE, ... */
  154. int qscale; /* QP */
  155. int last_non_b_qscale; /* QP of last non b frame used for b frame qscale*/
  156. int pict_type; /* I_TYPE, P_TYPE, B_TYPE, ... */
  157. int last_non_b_pict_type; /* used for mpeg4 gmc b-frames & ratecontrol */
  158. int frame_rate_index;
  159. /* motion compensation */
  160. int unrestricted_mv;
  161. int h263_long_vectors; /* use horrible h263v1 long vector mode */
  162. int f_code; /* forward MV resolution */
  163. int b_code; /* backward MV resolution for B Frames (mpeg4) */
  164. INT16 (*motion_val)[2]; /* used for MV prediction (4MV per MB) */
  165. INT16 (*p_mv_table)[2]; /* MV table (1MV per MB) p-frame encoding */
  166. INT16 (*b_forw_mv_table)[2]; /* MV table (1MV per MB) forward mode b-frame encoding */
  167. INT16 (*b_back_mv_table)[2]; /* MV table (1MV per MB) backward mode b-frame encoding */
  168. INT16 (*b_bidir_forw_mv_table)[2]; /* MV table (1MV per MB) bidir mode b-frame encoding */
  169. INT16 (*b_bidir_back_mv_table)[2]; /* MV table (1MV per MB) bidir mode b-frame encoding */
  170. INT16 (*b_direct_forw_mv_table)[2];/* MV table (1MV per MB) direct mode b-frame encoding */
  171. INT16 (*b_direct_back_mv_table)[2];/* MV table (1MV per MB) direct mode b-frame encoding */
  172. INT16 (*b_direct_mv_table)[2]; /* MV table (1MV per MB) direct mode b-frame encoding */
  173. int me_method; /* ME algorithm */
  174. uint8_t *me_scratchpad; /* data area for the me algo, so that the ME doesnt need to malloc/free */
  175. uint32_t *me_map; /* map to avoid duplicate evaluations */
  176. uint16_t *me_score_map; /* map to store the SADs */
  177. int me_map_generation;
  178. int skip_me; /* set if ME is skiped for the current MB */
  179. int mv_dir;
  180. #define MV_DIR_BACKWARD 1
  181. #define MV_DIR_FORWARD 2
  182. #define MV_DIRECT 4 // bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4)
  183. int mv_type;
  184. #define MV_TYPE_16X16 0 /* 1 vector for the whole mb */
  185. #define MV_TYPE_8X8 1 /* 4 vectors (h263, mpeg4 4MV) */
  186. #define MV_TYPE_16X8 2 /* 2 vectors, one per 16x8 block */
  187. #define MV_TYPE_FIELD 3 /* 2 vectors, one per field */
  188. #define MV_TYPE_DMV 4 /* 2 vectors, special mpeg2 Dual Prime Vectors */
  189. /* motion vectors for a macroblock
  190. first coordinate : 0 = forward 1 = backward
  191. second " : depend on type
  192. third " : 0 = x, 1 = y
  193. */
  194. int mv[2][4][2];
  195. int field_select[2][2];
  196. int last_mv[2][2][2]; /* last MV, used for MV prediction in MPEG1 & B-frame MPEG4 */
  197. UINT16 (*mv_penalty)[MAX_MV*2+1]; /* amount of bits needed to encode a MV, used for ME */
  198. UINT8 *fcode_tab; /* smallest fcode needed for each MV */
  199. int has_b_frames;
  200. int no_rounding; /* apply no rounding to motion compensation (MPEG4, msmpeg4, ...)
  201. for b-frames rounding mode is allways 0 */
  202. int hurry_up; /* when set to 1 during decoding, b frames will be skiped
  203. when set to 2 idct/dequant will be skipped too */
  204. /* macroblock layer */
  205. int mb_x, mb_y;
  206. int mb_incr;
  207. int mb_intra;
  208. UINT16 *mb_var; /* Table for MB variances */
  209. UINT16 *mc_mb_var; /* Table for motion compensated MB variances */
  210. UINT8 *mb_type; /* Table for MB type */
  211. #define MB_TYPE_INTRA 0x01
  212. #define MB_TYPE_INTER 0x02
  213. #define MB_TYPE_INTER4V 0x04
  214. #define MB_TYPE_SKIPED 0x08
  215. #define MB_TYPE_GMC 0x10
  216. #define MB_TYPE_DIRECT 0x10
  217. #define MB_TYPE_FORWARD 0x20
  218. #define MB_TYPE_BACKWARD 0x40
  219. #define MB_TYPE_BIDIR 0x80
  220. int block_index[6]; /* index to current MB in block based arrays with edges*/
  221. int block_wrap[6];
  222. /* matrix transmitted in the bitstream */
  223. UINT16 intra_matrix[64];
  224. UINT16 chroma_intra_matrix[64];
  225. UINT16 inter_matrix[64];
  226. UINT16 chroma_inter_matrix[64];
  227. #define QUANT_BIAS_SHIFT 4
  228. int intra_quant_bias; /* bias for the quantizer */
  229. int inter_quant_bias; /* bias for the quantizer */
  230. int min_qcoeff; /* minimum encodable coefficient */
  231. int max_qcoeff; /* maximum encodable coefficient */
  232. /* precomputed matrix (combine qscale and DCT renorm) */
  233. int q_intra_matrix[32][64];
  234. int q_inter_matrix[32][64];
  235. /* identical to the above but for MMX & these are not permutated */
  236. UINT16 __align8 q_intra_matrix16[32][64];
  237. UINT16 __align8 q_inter_matrix16[32][64];
  238. UINT16 __align8 q_intra_matrix16_bias[32][64];
  239. UINT16 __align8 q_inter_matrix16_bias[32][64];
  240. int block_last_index[6]; /* last non zero coefficient in block */
  241. void *opaque; /* private data for the user */
  242. /* bit rate control */
  243. int I_frame_bits; //FIXME used in mpeg12 ...
  244. int mb_var_sum; /* sum of MB variance for current frame */
  245. int mc_mb_var_sum; /* motion compensated MB variance for current frame */
  246. int last_non_b_mc_mb_var;/* motion compensated MB variance for last non b frame */
  247. INT64 wanted_bits;
  248. INT64 total_bits;
  249. int frame_bits; /* bits used for the current frame */
  250. int pb_frame_bits; /* bits of the last b...bp group */
  251. Predictor i_pred;
  252. Predictor p_pred;
  253. double qsum; /* sum of qscales */
  254. double qcount; /* count of qscales */
  255. double short_term_qsum; /* sum of recent qscales */
  256. double short_term_qcount; /* count of recent qscales */
  257. RateControlContext rc_context;
  258. /* statistics, used for 2-pass encoding */
  259. int mv_bits;
  260. int header_bits;
  261. int i_tex_bits;
  262. int p_tex_bits;
  263. int i_count;
  264. int p_count;
  265. int skip_count;
  266. int misc_bits; // cbp, mb_type
  267. int last_bits; //temp var used for calculating the above vars
  268. /* error concealment / resync */
  269. int resync_mb_x; /* x position of last resync marker */
  270. int resync_mb_y; /* y position of last resync marker */
  271. int mb_num_left; /* number of MBs left in this video packet */
  272. GetBitContext next_resync_gb; /* starts at the next resync marker */
  273. int next_resync_qscale; /* qscale of next resync marker */
  274. int next_resync_pos; /* bitstream position of next resync marker */
  275. #define DECODING_AC_LOST -1
  276. #define DECODING_ACDC_LOST -2
  277. #define DECODING_DESYNC -3
  278. int decoding_error;
  279. int next_p_frame_damaged; /* set if the next p frame is damaged, to avoid showing trashed b frames */
  280. int error_resilience;
  281. /* H.263 specific */
  282. int gob_number;
  283. int gob_index;
  284. /* H.263+ specific */
  285. int umvplus;
  286. int umvplus_dec;
  287. int h263_aic; /* Advanded INTRA Coding (AIC) */
  288. int h263_aic_dir; /* AIC direction: 0 = left, 1 = top */
  289. /* mpeg4 specific */
  290. int time_increment_resolution;
  291. int time_increment_bits; /* number of bits to represent the fractional part of time */
  292. int last_time_base;
  293. int time_base; /* time in seconds of last I,P,S Frame */
  294. INT64 time; /* time of current frame */
  295. INT64 last_non_b_time;
  296. UINT16 pp_time; /* time distance between the last 2 p,s,i frames */
  297. UINT16 bp_time; /* time distance between the last b and p,s,i frame */
  298. int shape;
  299. int vol_sprite_usage;
  300. int sprite_width;
  301. int sprite_height;
  302. int sprite_left;
  303. int sprite_top;
  304. int sprite_brightness_change;
  305. int num_sprite_warping_points;
  306. int real_sprite_warping_points;
  307. int sprite_offset[2][2];
  308. int sprite_delta[2][2][2];
  309. int sprite_shift[2][2];
  310. int mcsel;
  311. int quant_precision;
  312. int quarter_sample; /* 1->qpel, 0->half pel ME/MC */
  313. int scalability;
  314. int hierachy_type;
  315. int enhancement_type;
  316. int new_pred;
  317. int reduced_res_vop;
  318. int aspect_ratio_info;
  319. int sprite_warping_accuracy;
  320. int low_latency_sprite;
  321. int data_partitioning;
  322. int rvlc; /* reversible vlc */
  323. int resync_marker; /* could this stream contain resync markers*/
  324. int low_delay; /* no reordering needed / has no b-frames */
  325. int vo_type;
  326. int vol_control_parameters; /* does the stream contain the low_delay flag, used to workaround buggy encoders */
  327. PutBitContext tex_pb; /* used for data partitioned VOPs */
  328. PutBitContext pb2; /* used for data partitioned VOPs */
  329. #define PB_BUFFER_SIZE 1024*256
  330. uint8_t *tex_pb_buffer;
  331. uint8_t *pb2_buffer;
  332. /* divx specific, used to workaround (many) bugs in divx5 */
  333. int divx_version;
  334. int divx_build;
  335. #define BITSTREAM_BUFFER_SIZE 1024*256
  336. UINT8 *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
  337. int bitstream_buffer_size;
  338. /* RV10 specific */
  339. int rv10_version; /* RV10 version: 0 or 3 */
  340. int rv10_first_dc_coded[3];
  341. /* MJPEG specific */
  342. struct MJpegContext *mjpeg_ctx;
  343. int mjpeg_vsample[3]; /* vertical sampling factors, default = {2, 1, 1} */
  344. int mjpeg_hsample[3]; /* horizontal sampling factors, default = {2, 1, 1} */
  345. int mjpeg_write_tables; /* do we want to have quantisation- and
  346. huffmantables in the jpeg file ? */
  347. int mjpeg_data_only_frames; /* frames only with SOI, SOS and EOI markers */
  348. /* MSMPEG4 specific */
  349. int mv_table_index;
  350. int rl_table_index;
  351. int rl_chroma_table_index;
  352. int dc_table_index;
  353. int use_skip_mb_code;
  354. int slice_height; /* in macroblocks */
  355. int first_slice_line; /* used in mpeg4 too to handle resync markers */
  356. int flipflop_rounding;
  357. int msmpeg4_version; /* 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8*/
  358. int per_mb_rl_table;
  359. int esc3_level_length;
  360. int esc3_run_length;
  361. UINT8 *inter_scantable;
  362. UINT8 *intra_scantable;
  363. UINT8 *intra_v_scantable;
  364. UINT8 *intra_h_scantable;
  365. /* [mb_intra][isChroma][level][run][last] */
  366. int ac_stats[2][2][MAX_LEVEL+1][MAX_RUN+1][2];
  367. int inter_intra_pred;
  368. /* decompression specific */
  369. GetBitContext gb;
  370. /* MPEG2 specific - I wish I had not to support this mess. */
  371. int progressive_sequence;
  372. int mpeg_f_code[2][2];
  373. int picture_structure;
  374. /* picture type */
  375. #define PICT_TOP_FIELD 1
  376. #define PICT_BOTTOM_FIELD 2
  377. #define PICT_FRAME 3
  378. int intra_dc_precision;
  379. int frame_pred_frame_dct;
  380. int top_field_first;
  381. int concealment_motion_vectors;
  382. int q_scale_type;
  383. int intra_vlc_format;
  384. int alternate_scan;
  385. int repeat_first_field;
  386. int chroma_420_type;
  387. int progressive_frame;
  388. int mpeg2;
  389. int full_pel[2];
  390. int interlaced_dct;
  391. int last_qscale;
  392. int first_slice;
  393. /* RTP specific */
  394. /* These are explained on avcodec.h */
  395. int rtp_mode;
  396. int rtp_payload_size;
  397. void (*rtp_callback)(void *data, int size, int packet_number);
  398. UINT8 *ptr_lastgob;
  399. UINT8 *ptr_last_mb_line;
  400. UINT32 mb_line_avgsize;
  401. DCTELEM (*block)[64]; /* points to one of the following blocks */
  402. DCTELEM blocks[2][6][64] __align8; // for HQ mode we need to keep the best block
  403. void (*dct_unquantize_mpeg1)(struct MpegEncContext *s,
  404. DCTELEM *block, int n, int qscale);
  405. void (*dct_unquantize_mpeg2)(struct MpegEncContext *s,
  406. DCTELEM *block, int n, int qscale);
  407. void (*dct_unquantize_h263)(struct MpegEncContext *s,
  408. DCTELEM *block, int n, int qscale);
  409. void (*dct_unquantize)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
  410. DCTELEM *block, int n, int qscale);
  411. } MpegEncContext;
  412. int MPV_common_init(MpegEncContext *s);
  413. void MPV_common_end(MpegEncContext *s);
  414. void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64]);
  415. void MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx);
  416. void MPV_frame_end(MpegEncContext *s);
  417. #ifdef HAVE_MMX
  418. void MPV_common_init_mmx(MpegEncContext *s);
  419. #endif
  420. #ifdef ARCH_ALPHA
  421. void MPV_common_init_axp(MpegEncContext *s);
  422. #endif
  423. extern int (*dct_quantize)(MpegEncContext *s, DCTELEM *block, int n, int qscale, int *overflow);
  424. extern void (*draw_edges)(UINT8 *buf, int wrap, int width, int height, int w);
  425. void ff_conceal_past_errors(MpegEncContext *s, int conceal_all);
  426. void ff_copy_bits(PutBitContext *pb, UINT8 *src, int length);
  427. void ff_clean_intra_table_entries(MpegEncContext *s);
  428. /* motion_est.c */
  429. void ff_estimate_p_frame_motion(MpegEncContext * s,
  430. int mb_x, int mb_y);
  431. void ff_estimate_b_frame_motion(MpegEncContext * s,
  432. int mb_x, int mb_y);
  433. int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type);
  434. void ff_fix_long_p_mvs(MpegEncContext * s);
  435. void ff_fix_long_b_mvs(MpegEncContext * s, int16_t (*mv_table)[2], int f_code, int type);
  436. /* mpeg12.c */
  437. extern INT16 ff_mpeg1_default_intra_matrix[64];
  438. extern INT16 ff_mpeg1_default_non_intra_matrix[64];
  439. extern UINT8 ff_mpeg1_dc_scale_table[128];
  440. void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
  441. void mpeg1_encode_mb(MpegEncContext *s,
  442. DCTELEM block[6][64],
  443. int motion_x, int motion_y);
  444. void ff_mpeg1_encode_init(MpegEncContext *s);
  445. /* h263enc.c */
  446. typedef struct RLTable {
  447. int n; /* number of entries of table_vlc minus 1 */
  448. int last; /* number of values for last = 0 */
  449. const UINT16 (*table_vlc)[2];
  450. const INT8 *table_run;
  451. const INT8 *table_level;
  452. UINT8 *index_run[2]; /* encoding only */
  453. INT8 *max_level[2]; /* encoding & decoding */
  454. INT8 *max_run[2]; /* encoding & decoding */
  455. VLC vlc; /* decoding only deprected FIXME remove*/
  456. RL_VLC_ELEM *rl_vlc[32]; /* decoding only */
  457. } RLTable;
  458. void init_rl(RLTable *rl);
  459. void init_vlc_rl(RLTable *rl);
  460. static inline int get_rl_index(const RLTable *rl, int last, int run, int level)
  461. {
  462. int index;
  463. index = rl->index_run[last][run];
  464. if (index >= rl->n)
  465. return rl->n;
  466. if (level > rl->max_level[last][run])
  467. return rl->n;
  468. return index + level - 1;
  469. }
  470. extern UINT8 ff_mpeg4_y_dc_scale_table[32];
  471. extern UINT8 ff_mpeg4_c_dc_scale_table[32];
  472. void h263_encode_mb(MpegEncContext *s,
  473. DCTELEM block[6][64],
  474. int motion_x, int motion_y);
  475. void mpeg4_encode_mb(MpegEncContext *s,
  476. DCTELEM block[6][64],
  477. int motion_x, int motion_y);
  478. void h263_encode_picture_header(MpegEncContext *s, int picture_number);
  479. int h263_encode_gob_header(MpegEncContext * s, int mb_line);
  480. INT16 *h263_pred_motion(MpegEncContext * s, int block,
  481. int *px, int *py);
  482. void mpeg4_pred_ac(MpegEncContext * s, INT16 *block, int n,
  483. int dir);
  484. void ff_set_mpeg4_time(MpegEncContext * s, int picture_number);
  485. void mpeg4_encode_picture_header(MpegEncContext *s, int picture_number);
  486. void h263_encode_init(MpegEncContext *s);
  487. void h263_decode_init_vlc(MpegEncContext *s);
  488. int h263_decode_picture_header(MpegEncContext *s);
  489. int h263_decode_gob_header(MpegEncContext *s);
  490. int mpeg4_decode_picture_header(MpegEncContext * s);
  491. int intel_h263_decode_picture_header(MpegEncContext *s);
  492. int h263_decode_mb(MpegEncContext *s,
  493. DCTELEM block[6][64]);
  494. int h263_get_picture_format(int width, int height);
  495. int ff_mpeg4_decode_video_packet_header(MpegEncContext *s);
  496. int ff_mpeg4_resync(MpegEncContext *s);
  497. void ff_mpeg4_encode_video_packet_header(MpegEncContext *s);
  498. void ff_mpeg4_clean_buffers(MpegEncContext *s);
  499. void ff_mpeg4_stuffing(PutBitContext * pbc);
  500. void ff_mpeg4_init_partitions(MpegEncContext *s);
  501. void ff_mpeg4_merge_partitions(MpegEncContext *s);
  502. extern inline int ff_mpeg4_pred_dc(MpegEncContext * s, int n, UINT16 **dc_val_ptr, int *dir_ptr);
  503. /* rv10.c */
  504. void rv10_encode_picture_header(MpegEncContext *s, int picture_number);
  505. int rv_decode_dc(MpegEncContext *s, int n);
  506. /* msmpeg4.c */
  507. void msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number);
  508. void msmpeg4_encode_ext_header(MpegEncContext * s);
  509. void msmpeg4_encode_mb(MpegEncContext * s,
  510. DCTELEM block[6][64],
  511. int motion_x, int motion_y);
  512. int msmpeg4_decode_picture_header(MpegEncContext * s);
  513. int msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
  514. int msmpeg4_decode_mb(MpegEncContext *s,
  515. DCTELEM block[6][64]);
  516. int ff_msmpeg4_decode_init(MpegEncContext *s);
  517. void ff_msmpeg4_encode_init(MpegEncContext *s);
  518. /* mjpegenc.c */
  519. int mjpeg_init(MpegEncContext *s);
  520. void mjpeg_close(MpegEncContext *s);
  521. void mjpeg_encode_mb(MpegEncContext *s,
  522. DCTELEM block[6][64]);
  523. void mjpeg_picture_header(MpegEncContext *s);
  524. void mjpeg_picture_trailer(MpegEncContext *s);
  525. /* rate control */
  526. int ff_rate_control_init(MpegEncContext *s);
  527. int ff_rate_estimate_qscale(MpegEncContext *s);
  528. int ff_rate_estimate_qscale_pass2(MpegEncContext *s);
  529. void ff_write_pass1_stats(MpegEncContext *s);
  530. void ff_rate_control_uninit(MpegEncContext *s);
  531. #endif /* AVCODEC_MPEGVIDEO_H */