You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

944 lines
39KB

  1. /*
  2. * Generic DCT based hybrid video encoder
  3. * Copyright (c) 2000, 2001, 2002 Fabrice Bellard.
  4. * Copyright (c) 2002-2004 Michael Niedermayer
  5. *
  6. * This file is part of FFmpeg.
  7. *
  8. * FFmpeg is free software; you can redistribute it and/or
  9. * modify it under the terms of the GNU Lesser General Public
  10. * License as published by the Free Software Foundation; either
  11. * version 2.1 of the License, or (at your option) any later version.
  12. *
  13. * FFmpeg is distributed in the hope that it will be useful,
  14. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16. * Lesser General Public License for more details.
  17. *
  18. * You should have received a copy of the GNU Lesser General Public
  19. * License along with FFmpeg; if not, write to the Free Software
  20. * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  21. */
  22. /**
  23. * @file mpegvideo.h
  24. * mpegvideo header.
  25. */
  26. #ifndef AVCODEC_MPEGVIDEO_H
  27. #define AVCODEC_MPEGVIDEO_H
  28. #include "dsputil.h"
  29. #include "bitstream.h"
  30. #include "ratecontrol.h"
  31. #define FRAME_SKIPPED 100 ///< return value for header parsers if frame is not coded
  32. enum OutputFormat {
  33. FMT_MPEG1,
  34. FMT_H261,
  35. FMT_H263,
  36. FMT_MJPEG,
  37. FMT_H264,
  38. };
  39. #define EDGE_WIDTH 16
  40. #define MPEG_BUF_SIZE (16 * 1024)
  41. #define QMAT_SHIFT_MMX 16
  42. #define QMAT_SHIFT 22
  43. #define MAX_FCODE 7
  44. #define MAX_MV 2048
  45. #define MAX_THREADS 8
  46. #define MAX_PICTURE_COUNT 32
  47. #define ME_MAP_SIZE 64
  48. #define ME_MAP_SHIFT 3
  49. #define ME_MAP_MV_BITS 11
  50. /* run length table */
  51. #define MAX_RUN 64
  52. #define MAX_LEVEL 64
  53. #define I_TYPE FF_I_TYPE ///< Intra
  54. #define P_TYPE FF_P_TYPE ///< Predicted
  55. #define B_TYPE FF_B_TYPE ///< Bi-dir predicted
  56. #define S_TYPE FF_S_TYPE ///< S(GMC)-VOP MPEG4
  57. #define SI_TYPE FF_SI_TYPE ///< Switching Intra
  58. #define SP_TYPE FF_SP_TYPE ///< Switching Predicted
  59. #define MAX_MB_BYTES (30*16*16*3/8 + 120)
  60. #define INPLACE_OFFSET 16
  61. /**
  62. * Scantable.
  63. */
  64. typedef struct ScanTable{
  65. const uint8_t *scantable;
  66. uint8_t permutated[64];
  67. uint8_t raster_end[64];
  68. #ifdef ARCH_POWERPC
  69. /** Used by dct_quantise_alitvec to find last-non-zero */
  70. DECLARE_ALIGNED_8(uint8_t, inverse[64]);
  71. #endif
  72. } ScanTable;
  73. /**
  74. * Picture.
  75. */
  76. typedef struct Picture{
  77. FF_COMMON_FRAME
  78. /**
  79. * halfpel luma planes.
  80. */
  81. uint8_t *interpolated[3];
  82. int16_t (*motion_val_base[2])[2];
  83. uint32_t *mb_type_base;
  84. #define MB_TYPE_INTRA MB_TYPE_INTRA4x4 //default mb_type if theres just one type
  85. #define IS_INTRA4x4(a) ((a)&MB_TYPE_INTRA4x4)
  86. #define IS_INTRA16x16(a) ((a)&MB_TYPE_INTRA16x16)
  87. #define IS_PCM(a) ((a)&MB_TYPE_INTRA_PCM)
  88. #define IS_INTRA(a) ((a)&7)
  89. #define IS_INTER(a) ((a)&(MB_TYPE_16x16|MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8))
  90. #define IS_SKIP(a) ((a)&MB_TYPE_SKIP)
  91. #define IS_INTRA_PCM(a) ((a)&MB_TYPE_INTRA_PCM)
  92. #define IS_INTERLACED(a) ((a)&MB_TYPE_INTERLACED)
  93. #define IS_DIRECT(a) ((a)&MB_TYPE_DIRECT2)
  94. #define IS_GMC(a) ((a)&MB_TYPE_GMC)
  95. #define IS_16X16(a) ((a)&MB_TYPE_16x16)
  96. #define IS_16X8(a) ((a)&MB_TYPE_16x8)
  97. #define IS_8X16(a) ((a)&MB_TYPE_8x16)
  98. #define IS_8X8(a) ((a)&MB_TYPE_8x8)
  99. #define IS_SUB_8X8(a) ((a)&MB_TYPE_16x16) //note reused
  100. #define IS_SUB_8X4(a) ((a)&MB_TYPE_16x8) //note reused
  101. #define IS_SUB_4X8(a) ((a)&MB_TYPE_8x16) //note reused
  102. #define IS_SUB_4X4(a) ((a)&MB_TYPE_8x8) //note reused
  103. #define IS_ACPRED(a) ((a)&MB_TYPE_ACPRED)
  104. #define IS_QUANT(a) ((a)&MB_TYPE_QUANT)
  105. #define IS_DIR(a, part, list) ((a) & (MB_TYPE_P0L0<<((part)+2*(list))))
  106. #define USES_LIST(a, list) ((a) & ((MB_TYPE_P0L0|MB_TYPE_P1L0)<<(2*(list)))) ///< does this mb use listX, note doesnt work if subMBs
  107. #define HAS_CBP(a) ((a)&MB_TYPE_CBP)
  108. int field_poc[2]; ///< h264 top/bottom POC
  109. int poc; ///< h264 frame POC
  110. int frame_num; ///< h264 frame_num
  111. int pic_id; ///< h264 pic_num or long_term_pic_idx
  112. int long_ref; ///< 1->long term reference 0->short term reference
  113. int ref_poc[2][16]; ///< h264 POCs of the frames used as reference
  114. int ref_count[2]; ///< number of entries in ref_poc
  115. int mb_var_sum; ///< sum of MB variance for current frame
  116. int mc_mb_var_sum; ///< motion compensated MB variance for current frame
  117. uint16_t *mb_var; ///< Table for MB variances
  118. uint16_t *mc_mb_var; ///< Table for motion compensated MB variances
  119. uint8_t *mb_mean; ///< Table for MB luminance
  120. int32_t *mb_cmp_score; ///< Table for MB cmp scores, for mb decision FIXME remove
  121. int b_frame_score; /* */
  122. } Picture;
  123. typedef struct ParseContext{
  124. uint8_t *buffer;
  125. int index;
  126. int last_index;
  127. unsigned int buffer_size;
  128. uint32_t state; ///< contains the last few bytes in MSB order
  129. int frame_start_found;
  130. int overread; ///< the number of bytes which where irreversibly read from the next frame
  131. int overread_index; ///< the index into ParseContext.buffer of the overreaded bytes
  132. } ParseContext;
  133. struct MpegEncContext;
  134. /**
  135. * Motion estimation context.
  136. */
  137. typedef struct MotionEstContext{
  138. AVCodecContext *avctx;
  139. int skip; ///< set if ME is skipped for the current MB
  140. int co_located_mv[4][2]; ///< mv from last p frame for direct mode ME
  141. int direct_basis_mv[4][2];
  142. uint8_t *scratchpad; ///< data area for the me algo, so that the ME doesnt need to malloc/free
  143. uint8_t *best_mb;
  144. uint8_t *temp_mb[2];
  145. uint8_t *temp;
  146. int best_bits;
  147. uint32_t *map; ///< map to avoid duplicate evaluations
  148. uint32_t *score_map; ///< map to store the scores
  149. int map_generation;
  150. int pre_penalty_factor;
  151. int penalty_factor;
  152. int sub_penalty_factor;
  153. int mb_penalty_factor;
  154. int flags;
  155. int sub_flags;
  156. int mb_flags;
  157. int pre_pass; ///< = 1 for the pre pass
  158. int dia_size;
  159. int xmin;
  160. int xmax;
  161. int ymin;
  162. int ymax;
  163. int pred_x;
  164. int pred_y;
  165. uint8_t *src[4][4];
  166. uint8_t *ref[4][4];
  167. int stride;
  168. int uvstride;
  169. /* temp variables for picture complexity calculation */
  170. int mc_mb_var_sum_temp;
  171. int mb_var_sum_temp;
  172. int scene_change_score;
  173. /* cmp, chroma_cmp;*/
  174. op_pixels_func (*hpel_put)[4];
  175. op_pixels_func (*hpel_avg)[4];
  176. qpel_mc_func (*qpel_put)[16];
  177. qpel_mc_func (*qpel_avg)[16];
  178. uint8_t (*mv_penalty)[MAX_MV*2+1]; ///< amount of bits needed to encode a MV
  179. uint8_t *current_mv_penalty;
  180. int (*sub_motion_search)(struct MpegEncContext * s,
  181. int *mx_ptr, int *my_ptr, int dmin,
  182. int src_index, int ref_index,
  183. int size, int h);
  184. }MotionEstContext;
  185. /**
  186. * MpegEncContext.
  187. */
  188. typedef struct MpegEncContext {
  189. struct AVCodecContext *avctx;
  190. /* the following parameters must be initialized before encoding */
  191. int width, height;///< picture size. must be a multiple of 16
  192. int gop_size;
  193. int intra_only; ///< if true, only intra pictures are generated
  194. int bit_rate; ///< wanted bit rate
  195. enum OutputFormat out_format; ///< output format
  196. int h263_pred; ///< use mpeg4/h263 ac/dc predictions
  197. /* the following codec id fields are deprecated in favor of codec_id */
  198. int h263_plus; ///< h263 plus headers
  199. int h263_msmpeg4; ///< generate MSMPEG4 compatible stream (deprecated, use msmpeg4_version instead)
  200. int h263_flv; ///< use flv h263 header
  201. enum CodecID codec_id; /* see CODEC_ID_xxx */
  202. int fixed_qscale; ///< fixed qscale if non zero
  203. int encoding; ///< true if we are encoding (vs decoding)
  204. int flags; ///< AVCodecContext.flags (HQ, MV4, ...)
  205. int flags2; ///< AVCodecContext.flags2
  206. int max_b_frames; ///< max number of b-frames for encoding
  207. int luma_elim_threshold;
  208. int chroma_elim_threshold;
  209. int strict_std_compliance; ///< strictly follow the std (MPEG4, ...)
  210. int workaround_bugs; ///< workaround bugs in encoders which cannot be detected automatically
  211. /* the following fields are managed internally by the encoder */
  212. /** bit output */
  213. PutBitContext pb;
  214. /* sequence parameters */
  215. int context_initialized;
  216. int input_picture_number; ///< used to set pic->display_picture_number, shouldnt be used for/by anything else
  217. int coded_picture_number; ///< used to set pic->coded_picture_number, shouldnt be used for/by anything else
  218. int picture_number; //FIXME remove, unclear definition
  219. int picture_in_gop_number; ///< 0-> first pic in gop, ...
  220. int b_frames_since_non_b; ///< used for encoding, relative to not yet reordered input
  221. int64_t user_specified_pts;///< last non zero pts from AVFrame which was passed into avcodec_encode_video()
  222. int mb_width, mb_height; ///< number of MBs horizontally & vertically
  223. int mb_stride; ///< mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11
  224. int b8_stride; ///< 2*mb_width+1 used for some 8x8 block arrays to allow simple addressing
  225. int b4_stride; ///< 4*mb_width+1 used for some 4x4 block arrays to allow simple addressing
  226. int h_edge_pos, v_edge_pos;///< horizontal / vertical position of the right/bottom edge (pixel replication)
  227. int mb_num; ///< number of MBs of a picture
  228. int linesize; ///< line size, in bytes, may be different from width
  229. int uvlinesize; ///< line size, for chroma in bytes, may be different from width
  230. Picture *picture; ///< main picture buffer
  231. Picture **input_picture; ///< next pictures on display order for encoding
  232. Picture **reordered_input_picture; ///< pointer to the next pictures in codedorder for encoding
  233. int start_mb_y; ///< start mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
  234. int end_mb_y; ///< end mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
  235. struct MpegEncContext *thread_context[MAX_THREADS];
  236. /**
  237. * copy of the previous picture structure.
  238. * note, linesize & data, might not match the previous picture (for field pictures)
  239. */
  240. Picture last_picture;
  241. /**
  242. * copy of the next picture structure.
  243. * note, linesize & data, might not match the next picture (for field pictures)
  244. */
  245. Picture next_picture;
  246. /**
  247. * copy of the source picture structure for encoding.
  248. * note, linesize & data, might not match the source picture (for field pictures)
  249. */
  250. Picture new_picture;
  251. /**
  252. * copy of the current picture structure.
  253. * note, linesize & data, might not match the current picture (for field pictures)
  254. */
  255. Picture current_picture; ///< buffer to store the decompressed current picture
  256. Picture *last_picture_ptr; ///< pointer to the previous picture.
  257. Picture *next_picture_ptr; ///< pointer to the next picture (for bidir pred)
  258. Picture *current_picture_ptr; ///< pointer to the current picture
  259. uint8_t *visualization_buffer[3]; //< temporary buffer vor MV visualization
  260. int last_dc[3]; ///< last DC values for MPEG1
  261. int16_t *dc_val_base;
  262. int16_t *dc_val[3]; ///< used for mpeg4 DC prediction, all 3 arrays must be continuous
  263. int16_t dc_cache[4*5];
  264. int y_dc_scale, c_dc_scale;
  265. const uint8_t *y_dc_scale_table; ///< qscale -> y_dc_scale table
  266. const uint8_t *c_dc_scale_table; ///< qscale -> c_dc_scale table
  267. const uint8_t *chroma_qscale_table; ///< qscale -> chroma_qscale (h263)
  268. uint8_t *coded_block_base;
  269. uint8_t *coded_block; ///< used for coded block pattern prediction (msmpeg4v3, wmv1)
  270. int16_t (*ac_val_base)[16];
  271. int16_t (*ac_val[3])[16]; ///< used for for mpeg4 AC prediction, all 3 arrays must be continuous
  272. int ac_pred;
  273. uint8_t *prev_pict_types; ///< previous picture types in bitstream order, used for mb skip
  274. #define PREV_PICT_TYPES_BUFFER_SIZE 256
  275. int mb_skipped; ///< MUST BE SET only during DECODING
  276. uint8_t *mbskip_table; /**< used to avoid copy if macroblock skipped (for black regions for example)
  277. and used for b-frame encoding & decoding (contains skip table of next P Frame) */
  278. uint8_t *mbintra_table; ///< used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
  279. uint8_t *cbp_table; ///< used to store cbp, ac_pred for partitioned decoding
  280. uint8_t *pred_dir_table; ///< used to store pred_dir for partitioned decoding
  281. uint8_t *allocated_edge_emu_buffer;
  282. uint8_t *edge_emu_buffer; ///< points into the middle of allocated_edge_emu_buffer
  283. uint8_t *rd_scratchpad; ///< scratchpad for rate distortion mb decision
  284. uint8_t *obmc_scratchpad;
  285. uint8_t *b_scratchpad; ///< scratchpad used for writing into write only buffers
  286. int qscale; ///< QP
  287. int chroma_qscale; ///< chroma QP
  288. int lambda; ///< lagrange multipler used in rate distortion
  289. int lambda2; ///< (lambda*lambda) >> FF_LAMBDA_SHIFT
  290. int *lambda_table;
  291. int adaptive_quant; ///< use adaptive quantization
  292. int dquant; ///< qscale difference to prev qscale
  293. int pict_type; ///< I_TYPE, P_TYPE, B_TYPE, ...
  294. int last_pict_type; //FIXME removes
  295. int last_non_b_pict_type; ///< used for mpeg4 gmc b-frames & ratecontrol
  296. int dropable;
  297. int frame_rate_index;
  298. int last_lambda_for[5]; ///< last lambda for a specific pict type
  299. /* motion compensation */
  300. int unrestricted_mv; ///< mv can point outside of the coded picture
  301. int h263_long_vectors; ///< use horrible h263v1 long vector mode
  302. int decode; ///< if 0 then decoding will be skipped (for encoding b frames for example)
  303. DSPContext dsp; ///< pointers for accelerated dsp functions
  304. int f_code; ///< forward MV resolution
  305. int b_code; ///< backward MV resolution for B Frames (mpeg4)
  306. int16_t (*p_mv_table_base)[2];
  307. int16_t (*b_forw_mv_table_base)[2];
  308. int16_t (*b_back_mv_table_base)[2];
  309. int16_t (*b_bidir_forw_mv_table_base)[2];
  310. int16_t (*b_bidir_back_mv_table_base)[2];
  311. int16_t (*b_direct_mv_table_base)[2];
  312. int16_t (*p_field_mv_table_base[2][2])[2];
  313. int16_t (*b_field_mv_table_base[2][2][2])[2];
  314. int16_t (*p_mv_table)[2]; ///< MV table (1MV per MB) p-frame encoding
  315. int16_t (*b_forw_mv_table)[2]; ///< MV table (1MV per MB) forward mode b-frame encoding
  316. int16_t (*b_back_mv_table)[2]; ///< MV table (1MV per MB) backward mode b-frame encoding
  317. int16_t (*b_bidir_forw_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
  318. int16_t (*b_bidir_back_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
  319. int16_t (*b_direct_mv_table)[2]; ///< MV table (1MV per MB) direct mode b-frame encoding
  320. int16_t (*p_field_mv_table[2][2])[2]; ///< MV table (2MV per MB) interlaced p-frame encoding
  321. int16_t (*b_field_mv_table[2][2][2])[2];///< MV table (4MV per MB) interlaced b-frame encoding
  322. uint8_t (*p_field_select_table[2]);
  323. uint8_t (*b_field_select_table[2][2]);
  324. int me_method; ///< ME algorithm
  325. int mv_dir;
  326. #define MV_DIR_BACKWARD 1
  327. #define MV_DIR_FORWARD 2
  328. #define MV_DIRECT 4 ///< bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4)
  329. int mv_type;
  330. #define MV_TYPE_16X16 0 ///< 1 vector for the whole mb
  331. #define MV_TYPE_8X8 1 ///< 4 vectors (h263, mpeg4 4MV)
  332. #define MV_TYPE_16X8 2 ///< 2 vectors, one per 16x8 block
  333. #define MV_TYPE_FIELD 3 ///< 2 vectors, one per field
  334. #define MV_TYPE_DMV 4 ///< 2 vectors, special mpeg2 Dual Prime Vectors
  335. /**motion vectors for a macroblock
  336. first coordinate : 0 = forward 1 = backward
  337. second " : depend on type
  338. third " : 0 = x, 1 = y
  339. */
  340. int mv[2][4][2];
  341. int field_select[2][2];
  342. int last_mv[2][2][2]; ///< last MV, used for MV prediction in MPEG1 & B-frame MPEG4
  343. uint8_t *fcode_tab; ///< smallest fcode needed for each MV
  344. int16_t direct_scale_mv[2][64]; ///< precomputed to avoid divisions in ff_mpeg4_set_direct_mv
  345. MotionEstContext me;
  346. int no_rounding; /**< apply no rounding to motion compensation (MPEG4, msmpeg4, ...)
  347. for b-frames rounding mode is allways 0 */
  348. int hurry_up; /**< when set to 1 during decoding, b frames will be skipped
  349. when set to 2 idct/dequant will be skipped too */
  350. /* macroblock layer */
  351. int mb_x, mb_y;
  352. int mb_skip_run;
  353. int mb_intra;
  354. uint16_t *mb_type; ///< Table for candidate MB types for encoding
  355. #define CANDIDATE_MB_TYPE_INTRA 0x01
  356. #define CANDIDATE_MB_TYPE_INTER 0x02
  357. #define CANDIDATE_MB_TYPE_INTER4V 0x04
  358. #define CANDIDATE_MB_TYPE_SKIPPED 0x08
  359. //#define MB_TYPE_GMC 0x10
  360. #define CANDIDATE_MB_TYPE_DIRECT 0x10
  361. #define CANDIDATE_MB_TYPE_FORWARD 0x20
  362. #define CANDIDATE_MB_TYPE_BACKWARD 0x40
  363. #define CANDIDATE_MB_TYPE_BIDIR 0x80
  364. #define CANDIDATE_MB_TYPE_INTER_I 0x100
  365. #define CANDIDATE_MB_TYPE_FORWARD_I 0x200
  366. #define CANDIDATE_MB_TYPE_BACKWARD_I 0x400
  367. #define CANDIDATE_MB_TYPE_BIDIR_I 0x800
  368. int block_index[6]; ///< index to current MB in block based arrays with edges
  369. int block_wrap[6];
  370. uint8_t *dest[3];
  371. int *mb_index2xy; ///< mb_index -> mb_x + mb_y*mb_stride
  372. /** matrix transmitted in the bitstream */
  373. uint16_t intra_matrix[64];
  374. uint16_t chroma_intra_matrix[64];
  375. uint16_t inter_matrix[64];
  376. uint16_t chroma_inter_matrix[64];
  377. #define QUANT_BIAS_SHIFT 8
  378. int intra_quant_bias; ///< bias for the quantizer
  379. int inter_quant_bias; ///< bias for the quantizer
  380. int min_qcoeff; ///< minimum encodable coefficient
  381. int max_qcoeff; ///< maximum encodable coefficient
  382. int ac_esc_length; ///< num of bits needed to encode the longest esc
  383. uint8_t *intra_ac_vlc_length;
  384. uint8_t *intra_ac_vlc_last_length;
  385. uint8_t *inter_ac_vlc_length;
  386. uint8_t *inter_ac_vlc_last_length;
  387. uint8_t *luma_dc_vlc_length;
  388. uint8_t *chroma_dc_vlc_length;
  389. #define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level))
  390. int coded_score[8];
  391. /** precomputed matrix (combine qscale and DCT renorm) */
  392. int (*q_intra_matrix)[64];
  393. int (*q_inter_matrix)[64];
  394. /** identical to the above but for MMX & these are not permutated, second 64 entries are bias*/
  395. uint16_t (*q_intra_matrix16)[2][64];
  396. uint16_t (*q_inter_matrix16)[2][64];
  397. int block_last_index[12]; ///< last non zero coefficient in block
  398. /* scantables */
  399. DECLARE_ALIGNED_8(ScanTable, intra_scantable);
  400. ScanTable intra_h_scantable;
  401. ScanTable intra_v_scantable;
  402. ScanTable inter_scantable; ///< if inter == intra then intra should be used to reduce tha cache usage
  403. /* noise reduction */
  404. int (*dct_error_sum)[64];
  405. int dct_count[2];
  406. uint16_t (*dct_offset)[64];
  407. void *opaque; ///< private data for the user
  408. /* bit rate control */
  409. int64_t wanted_bits;
  410. int64_t total_bits;
  411. int frame_bits; ///< bits used for the current frame
  412. int next_lambda; ///< next lambda used for retrying to encode a frame
  413. RateControlContext rc_context; ///< contains stuff only accessed in ratecontrol.c
  414. /* statistics, used for 2-pass encoding */
  415. int mv_bits;
  416. int header_bits;
  417. int i_tex_bits;
  418. int p_tex_bits;
  419. int i_count;
  420. int f_count;
  421. int b_count;
  422. int skip_count;
  423. int misc_bits; ///< cbp, mb_type
  424. int last_bits; ///< temp var used for calculating the above vars
  425. /* error concealment / resync */
  426. int error_count;
  427. uint8_t *error_status_table; ///< table of the error status of each MB
  428. #define VP_START 1 ///< current MB is the first after a resync marker
  429. #define AC_ERROR 2
  430. #define DC_ERROR 4
  431. #define MV_ERROR 8
  432. #define AC_END 16
  433. #define DC_END 32
  434. #define MV_END 64
  435. //FIXME some prefix?
  436. int resync_mb_x; ///< x position of last resync marker
  437. int resync_mb_y; ///< y position of last resync marker
  438. GetBitContext last_resync_gb; ///< used to search for the next resync marker
  439. int mb_num_left; ///< number of MBs left in this video packet (for partitioned Slices only)
  440. int next_p_frame_damaged; ///< set if the next p frame is damaged, to avoid showing trashed b frames
  441. int error_resilience;
  442. ParseContext parse_context;
  443. /* H.263 specific */
  444. int gob_index;
  445. int obmc; ///< overlapped block motion compensation
  446. /* H.263+ specific */
  447. int umvplus; ///< == H263+ && unrestricted_mv
  448. int h263_aic; ///< Advanded INTRA Coding (AIC)
  449. int h263_aic_dir; ///< AIC direction: 0 = left, 1 = top
  450. int h263_slice_structured;
  451. int alt_inter_vlc; ///< alternative inter vlc
  452. int modified_quant;
  453. int loop_filter;
  454. int custom_pcf;
  455. /* mpeg4 specific */
  456. int time_increment_bits; ///< number of bits to represent the fractional part of time
  457. int last_time_base;
  458. int time_base; ///< time in seconds of last I,P,S Frame
  459. int64_t time; ///< time of current frame
  460. int64_t last_non_b_time;
  461. uint16_t pp_time; ///< time distance between the last 2 p,s,i frames
  462. uint16_t pb_time; ///< time distance between the last b and p,s,i frame
  463. uint16_t pp_field_time;
  464. uint16_t pb_field_time; ///< like above, just for interlaced
  465. int shape;
  466. int vol_sprite_usage;
  467. int sprite_width;
  468. int sprite_height;
  469. int sprite_left;
  470. int sprite_top;
  471. int sprite_brightness_change;
  472. int num_sprite_warping_points;
  473. int real_sprite_warping_points;
  474. int sprite_offset[2][2]; ///< sprite offset[isChroma][isMVY]
  475. int sprite_delta[2][2]; ///< sprite_delta [isY][isMVY]
  476. int sprite_shift[2]; ///< sprite shift [isChroma]
  477. int mcsel;
  478. int quant_precision;
  479. int quarter_sample; ///< 1->qpel, 0->half pel ME/MC
  480. int scalability;
  481. int hierachy_type;
  482. int enhancement_type;
  483. int new_pred;
  484. int reduced_res_vop;
  485. int aspect_ratio_info; //FIXME remove
  486. int sprite_warping_accuracy;
  487. int low_latency_sprite;
  488. int data_partitioning; ///< data partitioning flag from header
  489. int partitioned_frame; ///< is current frame partitioned
  490. int rvlc; ///< reversible vlc
  491. int resync_marker; ///< could this stream contain resync markers
  492. int low_delay; ///< no reordering needed / has no b-frames
  493. int vo_type;
  494. int vol_control_parameters; ///< does the stream contain the low_delay flag, used to workaround buggy encoders
  495. int intra_dc_threshold; ///< QP above whch the ac VLC should be used for intra dc
  496. int use_intra_dc_vlc;
  497. PutBitContext tex_pb; ///< used for data partitioned VOPs
  498. PutBitContext pb2; ///< used for data partitioned VOPs
  499. int mpeg_quant;
  500. int t_frame; ///< time distance of first I -> B, used for interlaced b frames
  501. int padding_bug_score; ///< used to detect the VERY common padding bug in MPEG4
  502. /* divx specific, used to workaround (many) bugs in divx5 */
  503. int divx_version;
  504. int divx_build;
  505. int divx_packed;
  506. uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
  507. int bitstream_buffer_size;
  508. unsigned int allocated_bitstream_buffer_size;
  509. int xvid_build;
  510. /* lavc specific stuff, used to workaround bugs in libavcodec */
  511. int lavc_build;
  512. /* RV10 specific */
  513. int rv10_version; ///< RV10 version: 0 or 3
  514. int rv10_first_dc_coded[3];
  515. /* MJPEG specific */
  516. struct MJpegContext *mjpeg_ctx;
  517. int mjpeg_vsample[3]; ///< vertical sampling factors, default = {2, 1, 1}
  518. int mjpeg_hsample[3]; ///< horizontal sampling factors, default = {2, 1, 1}
  519. int mjpeg_write_tables; ///< do we want to have quantisation- and huffmantables in the jpeg file ?
  520. int mjpeg_data_only_frames; ///< frames only with SOI, SOS and EOI markers
  521. /* MSMPEG4 specific */
  522. int mv_table_index;
  523. int rl_table_index;
  524. int rl_chroma_table_index;
  525. int dc_table_index;
  526. int use_skip_mb_code;
  527. int slice_height; ///< in macroblocks
  528. int first_slice_line; ///< used in mpeg4 too to handle resync markers
  529. int flipflop_rounding;
  530. int msmpeg4_version; ///< 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8
  531. int per_mb_rl_table;
  532. int esc3_level_length;
  533. int esc3_run_length;
  534. /** [mb_intra][isChroma][level][run][last] */
  535. int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2];
  536. int inter_intra_pred;
  537. int mspel;
  538. /* decompression specific */
  539. GetBitContext gb;
  540. /* Mpeg1 specific */
  541. int gop_picture_number; ///< index of the first picture of a GOP based on fake_pic_num & mpeg1 specific
  542. int last_mv_dir; ///< last mv_dir, used for b frame encoding
  543. int broken_link; ///< no_output_of_prior_pics_flag
  544. uint8_t *vbv_delay_ptr; ///< pointer to vbv_delay in the bitstream
  545. /* MPEG2 specific - I wish I had not to support this mess. */
  546. int progressive_sequence;
  547. int mpeg_f_code[2][2];
  548. int picture_structure;
  549. /* picture type */
  550. #define PICT_TOP_FIELD 1
  551. #define PICT_BOTTOM_FIELD 2
  552. #define PICT_FRAME 3
  553. int intra_dc_precision;
  554. int frame_pred_frame_dct;
  555. int top_field_first;
  556. int concealment_motion_vectors;
  557. int q_scale_type;
  558. int intra_vlc_format;
  559. int alternate_scan;
  560. int repeat_first_field;
  561. int chroma_420_type;
  562. int chroma_format;
  563. #define CHROMA_420 1
  564. #define CHROMA_422 2
  565. #define CHROMA_444 3
  566. int chroma_x_shift;//depend on pix_format, that depend on chroma_format
  567. int chroma_y_shift;
  568. int progressive_frame;
  569. int full_pel[2];
  570. int interlaced_dct;
  571. int first_slice;
  572. int first_field; ///< is 1 for the first field of a field picture 0 otherwise
  573. /* RTP specific */
  574. int rtp_mode;
  575. uint8_t *ptr_lastgob;
  576. int swap_uv;//vcr2 codec is mpeg2 varint with UV swaped
  577. short * pblocks[12];
  578. DCTELEM (*block)[64]; ///< points to one of the following blocks
  579. DCTELEM (*blocks)[8][64]; // for HQ mode we need to keep the best block
  580. int (*decode_mb)(struct MpegEncContext *s, DCTELEM block[6][64]); // used by some codecs to avoid a switch()
  581. #define SLICE_OK 0
  582. #define SLICE_ERROR -1
  583. #define SLICE_END -2 ///<end marker found
  584. #define SLICE_NOEND -3 ///<no end marker or error found but mb count exceeded
  585. void (*dct_unquantize_mpeg1_intra)(struct MpegEncContext *s,
  586. DCTELEM *block/*align 16*/, int n, int qscale);
  587. void (*dct_unquantize_mpeg1_inter)(struct MpegEncContext *s,
  588. DCTELEM *block/*align 16*/, int n, int qscale);
  589. void (*dct_unquantize_mpeg2_intra)(struct MpegEncContext *s,
  590. DCTELEM *block/*align 16*/, int n, int qscale);
  591. void (*dct_unquantize_mpeg2_inter)(struct MpegEncContext *s,
  592. DCTELEM *block/*align 16*/, int n, int qscale);
  593. void (*dct_unquantize_h263_intra)(struct MpegEncContext *s,
  594. DCTELEM *block/*align 16*/, int n, int qscale);
  595. void (*dct_unquantize_h263_inter)(struct MpegEncContext *s,
  596. DCTELEM *block/*align 16*/, int n, int qscale);
  597. void (*dct_unquantize_h261_intra)(struct MpegEncContext *s,
  598. DCTELEM *block/*align 16*/, int n, int qscale);
  599. void (*dct_unquantize_h261_inter)(struct MpegEncContext *s,
  600. DCTELEM *block/*align 16*/, int n, int qscale);
  601. void (*dct_unquantize_intra)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
  602. DCTELEM *block/*align 16*/, int n, int qscale);
  603. void (*dct_unquantize_inter)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
  604. DCTELEM *block/*align 16*/, int n, int qscale);
  605. int (*dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
  606. int (*fast_dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
  607. void (*denoise_dct)(struct MpegEncContext *s, DCTELEM *block);
  608. } MpegEncContext;
  609. int DCT_common_init(MpegEncContext *s);
  610. void MPV_decode_defaults(MpegEncContext *s);
  611. int MPV_common_init(MpegEncContext *s);
  612. void MPV_common_end(MpegEncContext *s);
  613. void MPV_decode_mb(MpegEncContext *s, DCTELEM block[12][64]);
  614. int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx);
  615. void MPV_frame_end(MpegEncContext *s);
  616. int MPV_encode_init(AVCodecContext *avctx);
  617. int MPV_encode_end(AVCodecContext *avctx);
  618. int MPV_encode_picture(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data);
  619. #ifdef HAVE_MMX
  620. void MPV_common_init_mmx(MpegEncContext *s);
  621. #endif
  622. #ifdef ARCH_ALPHA
  623. void MPV_common_init_axp(MpegEncContext *s);
  624. #endif
  625. #ifdef HAVE_MLIB
  626. void MPV_common_init_mlib(MpegEncContext *s);
  627. #endif
  628. #ifdef HAVE_MMI
  629. void MPV_common_init_mmi(MpegEncContext *s);
  630. #endif
  631. #ifdef ARCH_ARMV4L
  632. void MPV_common_init_armv4l(MpegEncContext *s);
  633. #endif
  634. #ifdef ARCH_POWERPC
  635. void MPV_common_init_ppc(MpegEncContext *s);
  636. #endif
  637. extern void (*draw_edges)(uint8_t *buf, int wrap, int width, int height, int w);
  638. void ff_copy_bits(PutBitContext *pb, uint8_t *src, int length);
  639. void ff_clean_intra_table_entries(MpegEncContext *s);
  640. void ff_init_scantable(uint8_t *, ScanTable *st, const uint8_t *src_scantable);
  641. void ff_draw_horiz_band(MpegEncContext *s, int y, int h);
  642. void ff_emulated_edge_mc(uint8_t *buf, uint8_t *src, int linesize, int block_w, int block_h,
  643. int src_x, int src_y, int w, int h);
  644. #define END_NOT_FOUND -100
  645. int ff_combine_frame(ParseContext *pc, int next, uint8_t **buf, int *buf_size);
  646. void ff_parse_close(AVCodecParserContext *s);
  647. void ff_mpeg_flush(AVCodecContext *avctx);
  648. void ff_print_debug_info(MpegEncContext *s, AVFrame *pict);
  649. void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix);
  650. int ff_find_unused_picture(MpegEncContext *s, int shared);
  651. void ff_denoise_dct(MpegEncContext *s, DCTELEM *block);
  652. void ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src);
  653. const uint8_t *ff_find_start_code(const uint8_t *p, const uint8_t *end, uint32_t *state);
  654. void ff_er_frame_start(MpegEncContext *s);
  655. void ff_er_frame_end(MpegEncContext *s);
  656. void ff_er_add_slice(MpegEncContext *s, int startx, int starty, int endx, int endy, int status);
  657. extern enum PixelFormat ff_yuv420p_list[2];
  658. void ff_init_block_index(MpegEncContext *s);
  659. static inline void ff_update_block_index(MpegEncContext *s){
  660. const int block_size= 8>>s->avctx->lowres;
  661. s->block_index[0]+=2;
  662. s->block_index[1]+=2;
  663. s->block_index[2]+=2;
  664. s->block_index[3]+=2;
  665. s->block_index[4]++;
  666. s->block_index[5]++;
  667. s->dest[0]+= 2*block_size;
  668. s->dest[1]+= block_size;
  669. s->dest[2]+= block_size;
  670. }
  671. static inline int get_bits_diff(MpegEncContext *s){
  672. const int bits= put_bits_count(&s->pb);
  673. const int last= s->last_bits;
  674. s->last_bits = bits;
  675. return bits - last;
  676. }
  677. /* motion_est.c */
  678. void ff_estimate_p_frame_motion(MpegEncContext * s,
  679. int mb_x, int mb_y);
  680. void ff_estimate_b_frame_motion(MpegEncContext * s,
  681. int mb_x, int mb_y);
  682. int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type);
  683. void ff_fix_long_p_mvs(MpegEncContext * s);
  684. void ff_fix_long_mvs(MpegEncContext * s, uint8_t *field_select_table, int field_select,
  685. int16_t (*mv_table)[2], int f_code, int type, int truncate);
  686. void ff_init_me(MpegEncContext *s);
  687. int ff_pre_estimate_p_frame_motion(MpegEncContext * s, int mb_x, int mb_y);
  688. inline int ff_epzs_motion_search(MpegEncContext * s, int *mx_ptr, int *my_ptr,
  689. int P[10][2], int src_index, int ref_index, int16_t (*last_mv)[2],
  690. int ref_mv_scale, int size, int h);
  691. inline int ff_get_mb_score(MpegEncContext * s, int mx, int my, int src_index,
  692. int ref_index, int size, int h, int add_rate);
  693. /* mpeg12.c */
  694. extern const uint16_t ff_mpeg1_default_intra_matrix[64];
  695. extern const uint16_t ff_mpeg1_default_non_intra_matrix[64];
  696. extern const uint8_t ff_mpeg1_dc_scale_table[128];
  697. void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
  698. void mpeg1_encode_mb(MpegEncContext *s,
  699. DCTELEM block[6][64],
  700. int motion_x, int motion_y);
  701. void ff_mpeg1_encode_init(MpegEncContext *s);
  702. void ff_mpeg1_encode_slice_header(MpegEncContext *s);
  703. void ff_mpeg1_clean_buffers(MpegEncContext *s);
  704. int ff_mpeg1_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size);
  705. /** RLTable. */
  706. typedef struct RLTable {
  707. int n; ///< number of entries of table_vlc minus 1
  708. int last; ///< number of values for last = 0
  709. const uint16_t (*table_vlc)[2];
  710. const int8_t *table_run;
  711. const int8_t *table_level;
  712. uint8_t *index_run[2]; ///< encoding only
  713. int8_t *max_level[2]; ///< encoding & decoding
  714. int8_t *max_run[2]; ///< encoding & decoding
  715. VLC vlc; ///< decoding only deprected FIXME remove
  716. RL_VLC_ELEM *rl_vlc[32]; ///< decoding only
  717. } RLTable;
  718. void init_rl(RLTable *rl, int use_static);
  719. void init_vlc_rl(RLTable *rl, int use_static);
  720. static inline int get_rl_index(const RLTable *rl, int last, int run, int level)
  721. {
  722. int index;
  723. index = rl->index_run[last][run];
  724. if (index >= rl->n)
  725. return rl->n;
  726. if (level > rl->max_level[last][run])
  727. return rl->n;
  728. return index + level - 1;
  729. }
  730. extern const uint8_t ff_mpeg4_y_dc_scale_table[32];
  731. extern const uint8_t ff_mpeg4_c_dc_scale_table[32];
  732. extern const uint8_t ff_aic_dc_scale_table[32];
  733. extern const int16_t ff_mpeg4_default_intra_matrix[64];
  734. extern const int16_t ff_mpeg4_default_non_intra_matrix[64];
  735. extern const uint8_t ff_h263_chroma_qscale_table[32];
  736. extern const uint8_t ff_h263_loop_filter_strength[32];
  737. /* h261.c */
  738. void ff_h261_loop_filter(MpegEncContext *s);
  739. void ff_h261_reorder_mb_index(MpegEncContext* s);
  740. void ff_h261_encode_mb(MpegEncContext *s,
  741. DCTELEM block[6][64],
  742. int motion_x, int motion_y);
  743. void ff_h261_encode_picture_header(MpegEncContext * s, int picture_number);
  744. void ff_h261_encode_init(MpegEncContext *s);
  745. /* h263.c, h263dec.c */
  746. int ff_h263_decode_init(AVCodecContext *avctx);
  747. int ff_h263_decode_frame(AVCodecContext *avctx,
  748. void *data, int *data_size,
  749. uint8_t *buf, int buf_size);
  750. int ff_h263_decode_end(AVCodecContext *avctx);
  751. void h263_encode_mb(MpegEncContext *s,
  752. DCTELEM block[6][64],
  753. int motion_x, int motion_y);
  754. void mpeg4_encode_mb(MpegEncContext *s,
  755. DCTELEM block[6][64],
  756. int motion_x, int motion_y);
  757. void h263_encode_picture_header(MpegEncContext *s, int picture_number);
  758. void ff_flv_encode_picture_header(MpegEncContext *s, int picture_number);
  759. void h263_encode_gob_header(MpegEncContext * s, int mb_line);
  760. int16_t *h263_pred_motion(MpegEncContext * s, int block, int dir,
  761. int *px, int *py);
  762. void mpeg4_pred_ac(MpegEncContext * s, DCTELEM *block, int n,
  763. int dir);
  764. void ff_set_mpeg4_time(MpegEncContext * s, int picture_number);
  765. void mpeg4_encode_picture_header(MpegEncContext *s, int picture_number);
  766. #ifdef CONFIG_ENCODERS
  767. void h263_encode_init(MpegEncContext *s);
  768. #else
  769. static void h263_encode_init(MpegEncContext *s) {assert(0);}
  770. #endif
  771. void h263_decode_init_vlc(MpegEncContext *s);
  772. int h263_decode_picture_header(MpegEncContext *s);
  773. int ff_h263_decode_gob_header(MpegEncContext *s);
  774. int ff_mpeg4_decode_picture_header(MpegEncContext * s, GetBitContext *gb);
  775. void ff_h263_update_motion_val(MpegEncContext * s);
  776. void ff_h263_loop_filter(MpegEncContext * s);
  777. void ff_set_qscale(MpegEncContext * s, int qscale);
  778. int ff_h263_decode_mba(MpegEncContext *s);
  779. void ff_h263_encode_mba(MpegEncContext *s);
  780. int intel_h263_decode_picture_header(MpegEncContext *s);
  781. int flv_h263_decode_picture_header(MpegEncContext *s);
  782. int ff_h263_decode_mb(MpegEncContext *s,
  783. DCTELEM block[6][64]);
  784. int ff_mpeg4_decode_mb(MpegEncContext *s,
  785. DCTELEM block[6][64]);
  786. int h263_get_picture_format(int width, int height);
  787. void ff_mpeg4_encode_video_packet_header(MpegEncContext *s);
  788. void ff_mpeg4_clean_buffers(MpegEncContext *s);
  789. void ff_mpeg4_stuffing(PutBitContext * pbc);
  790. void ff_mpeg4_init_partitions(MpegEncContext *s);
  791. void ff_mpeg4_merge_partitions(MpegEncContext *s);
  792. void ff_clean_mpeg4_qscales(MpegEncContext *s);
  793. void ff_clean_h263_qscales(MpegEncContext *s);
  794. int ff_mpeg4_decode_partitions(MpegEncContext *s);
  795. int ff_mpeg4_get_video_packet_prefix_length(MpegEncContext *s);
  796. int ff_h263_resync(MpegEncContext *s);
  797. int ff_h263_get_gob_height(MpegEncContext *s);
  798. void ff_mpeg4_init_direct_mv(MpegEncContext *s);
  799. int ff_mpeg4_set_direct_mv(MpegEncContext *s, int mx, int my);
  800. int ff_h263_round_chroma(int x);
  801. void ff_h263_encode_motion(MpegEncContext * s, int val, int f_code);
  802. int ff_mpeg4_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size);
  803. /* rv10.c */
  804. void rv10_encode_picture_header(MpegEncContext *s, int picture_number);
  805. int rv_decode_dc(MpegEncContext *s, int n);
  806. void rv20_encode_picture_header(MpegEncContext *s, int picture_number);
  807. /* msmpeg4.c */
  808. void msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number);
  809. void msmpeg4_encode_ext_header(MpegEncContext * s);
  810. void msmpeg4_encode_mb(MpegEncContext * s,
  811. DCTELEM block[6][64],
  812. int motion_x, int motion_y);
  813. int msmpeg4_decode_picture_header(MpegEncContext * s);
  814. int msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
  815. int ff_msmpeg4_decode_init(MpegEncContext *s);
  816. void ff_msmpeg4_encode_init(MpegEncContext *s);
  817. int ff_wmv2_decode_picture_header(MpegEncContext * s);
  818. int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s);
  819. void ff_wmv2_add_mb(MpegEncContext *s, DCTELEM block[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr);
  820. void ff_mspel_motion(MpegEncContext *s,
  821. uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
  822. uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
  823. int motion_x, int motion_y, int h);
  824. int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number);
  825. void ff_wmv2_encode_mb(MpegEncContext * s,
  826. DCTELEM block[6][64],
  827. int motion_x, int motion_y);
  828. /* mjpeg.c */
  829. int mjpeg_init(MpegEncContext *s);
  830. void mjpeg_close(MpegEncContext *s);
  831. void mjpeg_encode_mb(MpegEncContext *s,
  832. DCTELEM block[6][64]);
  833. void mjpeg_picture_header(MpegEncContext *s);
  834. void mjpeg_picture_trailer(MpegEncContext *s);
  835. void ff_mjpeg_stuffing(PutBitContext * pbc);
  836. /* cavs.c */
  837. int ff_cavs_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size);
  838. #endif /* AVCODEC_MPEGVIDEO_H */