2 * Generic DCT based hybrid video encoder
3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
4 * Copyright (c) 2002-2004 Michael Niedermayer
6 * This file is part of FFmpeg.
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.
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.
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
28 #ifndef AVCODEC_MPEGVIDEO_H
29 #define AVCODEC_MPEGVIDEO_H
35 #include "error_resilience.h"
38 #include "h264chroma.h"
43 #include "motion_est.h"
44 #include "mpegvideodsp.h"
45 #include "mpegvideoencdsp.h"
46 #include "pixblockdsp.h"
48 #include "ratecontrol.h"
50 #include "mpegutils.h"
51 #include "mpeg12data.h"
56 #include "libavutil/opt.h"
57 #include "libavutil/timecode.h"
59 #define FRAME_SKIPPED 100 ///< return value for header parsers if frame is not coded
63 #define MAX_THREADS 32
64 #define MAX_PICTURE_COUNT 36
66 #define MAX_B_FRAMES 16
68 #define ME_MAP_SIZE 64
70 #define MAX_MB_BYTES (30*16*16*3/8 + 120)
72 #define INPLACE_OFFSET 16
77 #define SEQ_END_CODE 0x000001b7
78 #define SEQ_START_CODE 0x000001b3
79 #define GOP_START_CODE 0x000001b8
80 #define PICTURE_START_CODE 0x00000100
81 #define SLICE_MIN_START_CODE 0x00000101
82 #define SLICE_MAX_START_CODE 0x000001af
83 #define EXT_START_CODE 0x000001b5
84 #define USER_START_CODE 0x000001b2
89 typedef struct Picture{
93 AVBufferRef *qscale_table_buf;
96 AVBufferRef *motion_val_buf[2];
97 int16_t (*motion_val[2])[2];
99 AVBufferRef *mb_type_buf;
100 uint32_t *mb_type; ///< types and macros are defined in mpegutils.h
102 AVBufferRef *mbskip_table_buf;
103 uint8_t *mbskip_table;
105 AVBufferRef *ref_index_buf[2];
106 int8_t *ref_index[2];
108 AVBufferRef *mb_var_buf;
109 uint16_t *mb_var; ///< Table for MB variances
111 AVBufferRef *mc_mb_var_buf;
112 uint16_t *mc_mb_var; ///< Table for motion compensated MB variances
114 int alloc_mb_width; ///< mb_width used to allocate tables
115 int alloc_mb_height; ///< mb_height used to allocate tables
117 AVBufferRef *mb_mean_buf;
118 uint8_t *mb_mean; ///< Table for MB luminance
120 AVBufferRef *hwaccel_priv_buf;
122 * hardware accelerator private data
124 void *hwaccel_picture_private;
126 int field_picture; ///< whether or not the picture was encoded in separate fields
128 int64_t mb_var_sum; ///< sum of MB variance for current frame
129 int64_t mc_mb_var_sum; ///< motion compensated MB variance for current frame
132 int needs_realloc; ///< Picture needs to be reallocated (eg due to a frame size change)
137 uint64_t error[AV_NUM_DATA_POINTERS];
140 typedef struct ScratchpadContext {
141 uint8_t *edge_emu_buffer; ///< temporary buffer for if MVs point to out-of-frame data
142 uint8_t *rd_scratchpad; ///< scratchpad for rate distortion mb decision
143 uint8_t *obmc_scratchpad;
144 uint8_t *b_scratchpad; ///< scratchpad used for writing into write only buffers
150 typedef struct MpegEncContext {
153 int y_dc_scale, c_dc_scale;
155 int block_last_index[12]; ///< last non zero coefficient in block
156 int h263_aic; ///< Advanded INTRA Coding (AIC)
159 ScanTable inter_scantable; ///< if inter == intra then intra should be used to reduce tha cache usage
160 ScanTable intra_scantable;
161 ScanTable intra_h_scantable;
162 ScanTable intra_v_scantable;
164 /* WARNING: changes above this line require updates to hardcoded
165 * offsets used in asm. */
167 struct AVCodecContext *avctx;
168 /* the following parameters must be initialized before encoding */
169 int width, height;///< picture size. must be a multiple of 16
171 int intra_only; ///< if true, only intra pictures are generated
172 int bit_rate; ///< wanted bit rate
173 enum OutputFormat out_format; ///< output format
174 int h263_pred; ///< use mpeg4/h263 ac/dc predictions
175 int pb_frame; ///< PB frame mode (0 = none, 1 = base, 2 = improved)
177 /* the following codec id fields are deprecated in favor of codec_id */
178 int h263_plus; ///< h263 plus headers
179 int h263_flv; ///< use flv h263 header
181 enum AVCodecID codec_id; /* see AV_CODEC_ID_xxx */
182 int fixed_qscale; ///< fixed qscale if non zero
183 int encoding; ///< true if we are encoding (vs decoding)
184 int max_b_frames; ///< max number of b-frames for encoding
185 int luma_elim_threshold;
186 int chroma_elim_threshold;
187 int strict_std_compliance; ///< strictly follow the std (MPEG4, ...)
188 int workaround_bugs; ///< workaround bugs in encoders which cannot be detected automatically
189 int codec_tag; ///< internal codec_tag upper case converted from avctx codec_tag
190 /* the following fields are managed internally by the encoder */
192 /* sequence parameters */
193 int context_initialized;
194 int input_picture_number; ///< used to set pic->display_picture_number, should not be used for/by anything else
195 int coded_picture_number; ///< used to set pic->coded_picture_number, should not be used for/by anything else
196 int picture_number; //FIXME remove, unclear definition
197 int picture_in_gop_number; ///< 0-> first pic in gop, ...
198 int mb_width, mb_height; ///< number of MBs horizontally & vertically
199 int mb_stride; ///< mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11
200 int b8_stride; ///< 2*mb_width+1 used for some 8x8 block arrays to allow simple addressing
201 int h_edge_pos, v_edge_pos;///< horizontal / vertical position of the right/bottom edge (pixel replication)
202 int mb_num; ///< number of MBs of a picture
203 ptrdiff_t linesize; ///< line size, in bytes, may be different from width
204 ptrdiff_t uvlinesize; ///< line size, for chroma in bytes, may be different from width
205 Picture *picture; ///< main picture buffer
206 Picture **input_picture; ///< next pictures on display order for encoding
207 Picture **reordered_input_picture; ///< pointer to the next pictures in codedorder for encoding
209 int64_t user_specified_pts; ///< last non-zero pts from AVFrame which was passed into avcodec_encode_video2()
211 * pts difference between the first and second input frame, used for
212 * calculating dts of the first frame when there's a delay */
215 * reordered pts to be used as dts for the next output frame when there's
217 int64_t reordered_pts;
222 int start_mb_y; ///< start mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
223 int end_mb_y; ///< end mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
224 struct MpegEncContext *thread_context[MAX_THREADS];
225 int slice_context_count; ///< number of used thread_contexts
228 * copy of the previous picture structure.
229 * note, linesize & data, might not match the previous picture (for field pictures)
231 Picture last_picture;
234 * copy of the next picture structure.
235 * note, linesize & data, might not match the next picture (for field pictures)
237 Picture next_picture;
240 * copy of the source picture structure for encoding.
241 * note, linesize & data, might not match the source picture (for field pictures)
246 * copy of the current picture structure.
247 * note, linesize & data, might not match the current picture (for field pictures)
249 Picture current_picture; ///< buffer to store the decompressed current picture
251 Picture *last_picture_ptr; ///< pointer to the previous picture.
252 Picture *next_picture_ptr; ///< pointer to the next picture (for bidir pred)
253 Picture *current_picture_ptr; ///< pointer to the current picture
254 int last_dc[3]; ///< last DC values for MPEG1
255 int16_t *dc_val_base;
256 int16_t *dc_val[3]; ///< used for mpeg4 DC prediction, all 3 arrays must be continuous
257 const uint8_t *y_dc_scale_table; ///< qscale -> y_dc_scale table
258 const uint8_t *c_dc_scale_table; ///< qscale -> c_dc_scale table
259 const uint8_t *chroma_qscale_table; ///< qscale -> chroma_qscale (h263)
260 uint8_t *coded_block_base;
261 uint8_t *coded_block; ///< used for coded block pattern prediction (msmpeg4v3, wmv1)
262 int16_t (*ac_val_base)[16];
263 int16_t (*ac_val[3])[16]; ///< used for mpeg4 AC prediction, all 3 arrays must be continuous
264 int mb_skipped; ///< MUST BE SET only during DECODING
265 uint8_t *mbskip_table; /**< used to avoid copy if macroblock skipped (for black regions for example)
266 and used for b-frame encoding & decoding (contains skip table of next P Frame) */
267 uint8_t *mbintra_table; ///< used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
268 uint8_t *cbp_table; ///< used to store cbp, ac_pred for partitioned decoding
269 uint8_t *pred_dir_table; ///< used to store pred_dir for partitioned decoding
271 ScratchpadContext sc;
274 int chroma_qscale; ///< chroma QP
275 unsigned int lambda; ///< lagrange multipler used in rate distortion
276 unsigned int lambda2; ///< (lambda*lambda) >> FF_LAMBDA_SHIFT
278 int adaptive_quant; ///< use adaptive quantization
279 int dquant; ///< qscale difference to prev qscale
280 int closed_gop; ///< MPEG1/2 GOP is closed
281 int pict_type; ///< AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
283 int last_pict_type; //FIXME removes
284 int last_non_b_pict_type; ///< used for mpeg4 gmc b-frames & ratecontrol
286 int frame_rate_index;
287 AVRational mpeg2_frame_rate_ext;
288 int last_lambda_for[5]; ///< last lambda for a specific pict type
289 int skipdct; ///< skip dct and code zero residual
291 /* motion compensation */
292 int unrestricted_mv; ///< mv can point outside of the coded picture
293 int h263_long_vectors; ///< use horrible h263v1 long vector mode
295 BlockDSPContext bdsp;
297 H264ChromaContext h264chroma;
301 MpegVideoDSPContext mdsp;
302 MpegvideoEncDSPContext mpvencdsp;
303 PixblockDSPContext pdsp;
305 VideoDSPContext vdsp;
306 H263DSPContext h263dsp;
307 int f_code; ///< forward MV resolution
308 int b_code; ///< backward MV resolution for B Frames (mpeg4)
309 int16_t (*p_mv_table_base)[2];
310 int16_t (*b_forw_mv_table_base)[2];
311 int16_t (*b_back_mv_table_base)[2];
312 int16_t (*b_bidir_forw_mv_table_base)[2];
313 int16_t (*b_bidir_back_mv_table_base)[2];
314 int16_t (*b_direct_mv_table_base)[2];
315 int16_t (*p_field_mv_table_base[2][2])[2];
316 int16_t (*b_field_mv_table_base[2][2][2])[2];
317 int16_t (*p_mv_table)[2]; ///< MV table (1MV per MB) p-frame encoding
318 int16_t (*b_forw_mv_table)[2]; ///< MV table (1MV per MB) forward mode b-frame encoding
319 int16_t (*b_back_mv_table)[2]; ///< MV table (1MV per MB) backward mode b-frame encoding
320 int16_t (*b_bidir_forw_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
321 int16_t (*b_bidir_back_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
322 int16_t (*b_direct_mv_table)[2]; ///< MV table (1MV per MB) direct mode b-frame encoding
323 int16_t (*p_field_mv_table[2][2])[2]; ///< MV table (2MV per MB) interlaced p-frame encoding
324 int16_t (*b_field_mv_table[2][2][2])[2];///< MV table (4MV per MB) interlaced b-frame encoding
325 uint8_t (*p_field_select_table[2]);
326 uint8_t (*b_field_select_table[2][2]);
327 int me_method; ///< ME algorithm
329 #define MV_DIR_FORWARD 1
330 #define MV_DIR_BACKWARD 2
331 #define MV_DIRECT 4 ///< bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4)
333 #define MV_TYPE_16X16 0 ///< 1 vector for the whole mb
334 #define MV_TYPE_8X8 1 ///< 4 vectors (h263, mpeg4 4MV)
335 #define MV_TYPE_16X8 2 ///< 2 vectors, one per 16x8 block
336 #define MV_TYPE_FIELD 3 ///< 2 vectors, one per field
337 #define MV_TYPE_DMV 4 ///< 2 vectors, special mpeg2 Dual Prime Vectors
338 /**motion vectors for a macroblock
339 first coordinate : 0 = forward 1 = backward
340 second " : depend on type
341 third " : 0 = x, 1 = y
344 int field_select[2][2];
345 int last_mv[2][2][2]; ///< last MV, used for MV prediction in MPEG1 & B-frame MPEG4
346 uint8_t *fcode_tab; ///< smallest fcode needed for each MV
347 int16_t direct_scale_mv[2][64]; ///< precomputed to avoid divisions in ff_mpeg4_set_direct_mv
351 int no_rounding; /**< apply no rounding to motion compensation (MPEG4, msmpeg4, ...)
352 for b-frames rounding mode is always 0 */
354 /* macroblock layer */
358 uint16_t *mb_type; ///< Table for candidate MB types for encoding (defines in mpegutils.h)
360 int block_index[6]; ///< index to current MB in block based arrays with edges
364 int *mb_index2xy; ///< mb_index -> mb_x + mb_y*mb_stride
366 /** matrix transmitted in the bitstream */
367 uint16_t intra_matrix[64];
368 uint16_t chroma_intra_matrix[64];
369 uint16_t inter_matrix[64];
370 uint16_t chroma_inter_matrix[64];
372 int intra_quant_bias; ///< bias for the quantizer
373 int inter_quant_bias; ///< bias for the quantizer
374 int min_qcoeff; ///< minimum encodable coefficient
375 int max_qcoeff; ///< maximum encodable coefficient
376 int ac_esc_length; ///< num of bits needed to encode the longest esc
377 uint8_t *intra_ac_vlc_length;
378 uint8_t *intra_ac_vlc_last_length;
379 uint8_t *intra_chroma_ac_vlc_length;
380 uint8_t *intra_chroma_ac_vlc_last_length;
381 uint8_t *inter_ac_vlc_length;
382 uint8_t *inter_ac_vlc_last_length;
383 uint8_t *luma_dc_vlc_length;
384 #define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level))
388 /** precomputed matrix (combine qscale and DCT renorm) */
389 int (*q_intra_matrix)[64];
390 int (*q_chroma_intra_matrix)[64];
391 int (*q_inter_matrix)[64];
392 /** identical to the above but for MMX & these are not permutated, second 64 entries are bias*/
393 uint16_t (*q_intra_matrix16)[2][64];
394 uint16_t (*q_chroma_intra_matrix16)[2][64];
395 uint16_t (*q_inter_matrix16)[2][64];
397 /* noise reduction */
398 int (*dct_error_sum)[64];
400 uint16_t (*dct_offset)[64];
402 /* bit rate control */
404 int frame_bits; ///< bits used for the current frame
405 int stuffing_bits; ///< bits used for stuffing
406 int next_lambda; ///< next lambda used for retrying to encode a frame
407 RateControlContext rc_context; ///< contains stuff only accessed in ratecontrol.c
409 /* statistics, used for 2-pass encoding */
418 int misc_bits; ///< cbp, mb_type
419 int last_bits; ///< temp var used for calculating the above vars
421 /* error concealment / resync */
422 int resync_mb_x; ///< x position of last resync marker
423 int resync_mb_y; ///< y position of last resync marker
424 GetBitContext last_resync_gb; ///< used to search for the next resync marker
425 int mb_num_left; ///< number of MBs left in this video packet (for partitioned Slices only)
426 int next_p_frame_damaged; ///< set if the next p frame is damaged, to avoid showing trashed b frames
428 ParseContext parse_context;
432 int obmc; ///< overlapped block motion compensation
433 int mb_info; ///< interval for outputting info about mb offsets as side data
434 int prev_mb_info, last_mb_info;
435 uint8_t *mb_info_ptr;
439 /* H.263+ specific */
440 int umvplus; ///< == H263+ && unrestricted_mv
441 int h263_aic_dir; ///< AIC direction: 0 = left, 1 = top
442 int h263_slice_structured;
443 int alt_inter_vlc; ///< alternative inter vlc
449 ///< number of bits to represent the fractional part of time (encoder only)
450 int time_increment_bits;
452 int time_base; ///< time in seconds of last I,P,S Frame
453 int64_t time; ///< time of current frame
454 int64_t last_non_b_time;
455 uint16_t pp_time; ///< time distance between the last 2 p,s,i frames
456 uint16_t pb_time; ///< time distance between the last b and p,s,i frame
457 uint16_t pp_field_time;
458 uint16_t pb_field_time; ///< like above, just for interlaced
459 int real_sprite_warping_points;
460 int sprite_offset[2][2]; ///< sprite offset[isChroma][isMVY]
461 int sprite_delta[2][2]; ///< sprite_delta [isY][isMVY]
464 int quarter_sample; ///< 1->qpel, 0->half pel ME/MC
465 int aspect_ratio_info; //FIXME remove
466 int sprite_warping_accuracy;
467 int data_partitioning; ///< data partitioning flag from header
468 int partitioned_frame; ///< is current frame partitioned
469 int low_delay; ///< no reordering needed / has no b-frames
471 PutBitContext tex_pb; ///< used for data partitioned VOPs
472 PutBitContext pb2; ///< used for data partitioned VOPs
474 int padding_bug_score; ///< used to detect the VERY common padding bug in MPEG4
476 /* divx specific, used to workaround (many) bugs in divx5 */
478 uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
479 int bitstream_buffer_size;
480 unsigned int allocated_bitstream_buffer_size;
483 int rv10_version; ///< RV10 version: 0 or 3
484 int rv10_first_dc_coded[3];
487 struct MJpegContext *mjpeg_ctx;
490 /* MSMPEG4 specific */
493 int rl_chroma_table_index;
495 int use_skip_mb_code;
496 int slice_height; ///< in macroblocks
497 int first_slice_line; ///< used in mpeg4 too to handle resync markers
498 int flipflop_rounding;
499 int msmpeg4_version; ///< 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8
501 int esc3_level_length;
503 /** [mb_intra][isChroma][level][run][last] */
504 int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2];
505 int inter_intra_pred;
508 /* decompression specific */
512 int gop_picture_number; ///< index of the first picture of a GOP based on fake_pic_num & mpeg1 specific
513 int last_mv_dir; ///< last mv_dir, used for b frame encoding
514 uint8_t *vbv_delay_ptr; ///< pointer to vbv_delay in the bitstream
516 /* MPEG-2-specific - I wished not to have to support this mess. */
517 int progressive_sequence;
518 int mpeg_f_code[2][2];
520 // picture structure defines are loaded from mpegutils.h
521 int picture_structure;
523 int intra_dc_precision;
524 int frame_pred_frame_dct;
526 int concealment_motion_vectors;
528 int intra_vlc_format;
531 int repeat_first_field;
537 int chroma_x_shift;//depend on pix_format, that depend on chroma_format
540 int progressive_frame;
543 int first_field; ///< is 1 for the first field of a field picture 0 otherwise
544 int drop_frame_timecode; ///< timecode is in drop frame format.
545 int scan_offset; ///< reserve space for SVCD scan offset user data.
550 char *tc_opt_str; ///< timecode option string
551 AVTimecode tc; ///< timecode context
553 uint8_t *ptr_lastgob;
554 int swap_uv; //vcr2 codec is an MPEG-2 variant with U and V swapped
555 int pack_pblocks; //xvmc needs to keep blocks without gaps.
556 int16_t (*pblocks[12])[64];
558 int16_t (*block)[64]; ///< points to one of the following blocks
559 int16_t (*blocks)[12][64]; // for HQ mode we need to keep the best block
560 int (*decode_mb)(struct MpegEncContext *s, int16_t block[6][64]); // used by some codecs to avoid a switch()
562 #define SLICE_ERROR -1
563 #define SLICE_END -2 ///<end marker found
564 #define SLICE_NOEND -3 ///<no end marker or error found but mb count exceeded
566 void (*dct_unquantize_mpeg1_intra)(struct MpegEncContext *s,
567 int16_t *block/*align 16*/, int n, int qscale);
568 void (*dct_unquantize_mpeg1_inter)(struct MpegEncContext *s,
569 int16_t *block/*align 16*/, int n, int qscale);
570 void (*dct_unquantize_mpeg2_intra)(struct MpegEncContext *s,
571 int16_t *block/*align 16*/, int n, int qscale);
572 void (*dct_unquantize_mpeg2_inter)(struct MpegEncContext *s,
573 int16_t *block/*align 16*/, int n, int qscale);
574 void (*dct_unquantize_h263_intra)(struct MpegEncContext *s,
575 int16_t *block/*align 16*/, int n, int qscale);
576 void (*dct_unquantize_h263_inter)(struct MpegEncContext *s,
577 int16_t *block/*align 16*/, int n, int qscale);
578 void (*dct_unquantize_intra)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
579 int16_t *block/*align 16*/, int n, int qscale);
580 void (*dct_unquantize_inter)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
581 int16_t *block/*align 16*/, int n, int qscale);
582 int (*dct_quantize)(struct MpegEncContext *s, int16_t *block/*align 16*/, int n, int qscale, int *overflow);
583 int (*fast_dct_quantize)(struct MpegEncContext *s, int16_t *block/*align 16*/, int n, int qscale, int *overflow);
584 void (*denoise_dct)(struct MpegEncContext *s, int16_t *block);
586 int mpv_flags; ///< flags set by private options
587 int quantizer_noise_shaping;
590 * ratecontrol qmin qmax limiting method
591 * 0-> clipping, 1-> use a nice continuous function to limit qscale within qmin/qmax.
596 float rc_initial_cplx;
597 float rc_buffer_aggressivity;
598 float border_masking;
603 /* temp buffers for rate control */
604 float *cplx_tab, *bits_tab;
606 /* flag to indicate a reinitialization is required, e.g. after
607 * a frame size change */
614 /* temporary frames used by b_frame_strategy = 2 */
615 AVFrame *tmp_frames[MAX_B_FRAMES + 2];
618 /* mpegvideo_enc common options */
619 #define FF_MPV_FLAG_SKIP_RD 0x0001
620 #define FF_MPV_FLAG_STRICT_GOP 0x0002
621 #define FF_MPV_FLAG_QP_RD 0x0004
622 #define FF_MPV_FLAG_CBP_RD 0x0008
623 #define FF_MPV_FLAG_NAQ 0x0010
624 #define FF_MPV_FLAG_MV0 0x0020
626 #ifndef FF_MPV_OFFSET
627 #define FF_MPV_OFFSET(x) offsetof(MpegEncContext, x)
629 #define FF_MPV_OPT_FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
630 #define FF_MPV_COMMON_OPTS \
631 { "mpv_flags", "Flags common for all mpegvideo-based encoders.", FF_MPV_OFFSET(mpv_flags), AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, "mpv_flags" },\
632 { "skip_rd", "RD optimal MB level residual skipping", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_SKIP_RD }, 0, 0, FF_MPV_OPT_FLAGS, "mpv_flags" },\
633 { "strict_gop", "Strictly enforce gop size", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_STRICT_GOP }, 0, 0, FF_MPV_OPT_FLAGS, "mpv_flags" },\
634 { "qp_rd", "Use rate distortion optimization for qp selection", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_QP_RD }, 0, 0, FF_MPV_OPT_FLAGS, "mpv_flags" },\
635 { "cbp_rd", "use rate distortion optimization for CBP", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_CBP_RD }, 0, 0, FF_MPV_OPT_FLAGS, "mpv_flags" },\
636 { "naq", "normalize adaptive quantization", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_NAQ }, 0, 0, FF_MPV_OPT_FLAGS, "mpv_flags" },\
637 { "mv0", "always try a mb with mv=<0,0>", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_MV0 }, 0, 0, FF_MPV_OPT_FLAGS, "mpv_flags" },\
638 { "luma_elim_threshold", "single coefficient elimination threshold for luminance (negative values also consider dc coefficient)",\
639 FF_MPV_OFFSET(luma_elim_threshold), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS },\
640 { "chroma_elim_threshold", "single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)",\
641 FF_MPV_OFFSET(chroma_elim_threshold), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS },\
642 { "quantizer_noise_shaping", NULL, FF_MPV_OFFSET(quantizer_noise_shaping), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FF_MPV_OPT_FLAGS },\
643 { "error_rate", "Simulate errors in the bitstream to test error concealment.", \
644 FF_MPV_OFFSET(error_rate), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FF_MPV_OPT_FLAGS },\
645 {"qsquish", "how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function)", \
646 FF_MPV_OFFSET(rc_qsquish), AV_OPT_TYPE_FLOAT, {.dbl = 0 }, 0, 99, FF_MPV_OPT_FLAGS}, \
647 {"rc_qmod_amp", "experimental quantizer modulation", FF_MPV_OFFSET(rc_qmod_amp), AV_OPT_TYPE_FLOAT, {.dbl = 0 }, -FLT_MAX, FLT_MAX, FF_MPV_OPT_FLAGS}, \
648 {"rc_qmod_freq", "experimental quantizer modulation", FF_MPV_OFFSET(rc_qmod_freq), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS}, \
649 {"rc_eq", "Set rate control equation. When computing the expression, besides the standard functions " \
650 "defined in the section 'Expression Evaluation', the following functions are available: " \
651 "bits2qp(bits), qp2bits(qp). Also the following constants are available: iTex pTex tex mv " \
652 "fCode iCount mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex avgTex.", \
653 FF_MPV_OFFSET(rc_eq), AV_OPT_TYPE_STRING, .flags = FF_MPV_OPT_FLAGS }, \
654 {"rc_init_cplx", "initial complexity for 1-pass encoding", FF_MPV_OFFSET(rc_initial_cplx), AV_OPT_TYPE_FLOAT, {.dbl = 0 }, -FLT_MAX, FLT_MAX, FF_MPV_OPT_FLAGS}, \
655 {"rc_buf_aggressivity", "currently useless", FF_MPV_OFFSET(rc_buffer_aggressivity), AV_OPT_TYPE_FLOAT, {.dbl = 1.0 }, -FLT_MAX, FLT_MAX, FF_MPV_OPT_FLAGS}, \
656 {"border_mask", "increase the quantizer for macroblocks close to borders", FF_MPV_OFFSET(border_masking), AV_OPT_TYPE_FLOAT, {.dbl = 0 }, -FLT_MAX, FLT_MAX, FF_MPV_OPT_FLAGS}, \
657 {"lmin", "minimum Lagrange factor (VBR)", FF_MPV_OFFSET(lmin), AV_OPT_TYPE_INT, {.i64 = 2*FF_QP2LAMBDA }, 0, INT_MAX, FF_MPV_OPT_FLAGS }, \
658 {"lmax", "maximum Lagrange factor (VBR)", FF_MPV_OFFSET(lmax), AV_OPT_TYPE_INT, {.i64 = 31*FF_QP2LAMBDA }, 0, INT_MAX, FF_MPV_OPT_FLAGS }, \
660 extern const AVOption ff_mpv_generic_options[];
662 #define FF_MPV_GENERIC_CLASS(name) \
663 static const AVClass name ## _class = {\
664 .class_name = #name " encoder",\
665 .item_name = av_default_item_name,\
666 .option = ff_mpv_generic_options,\
667 .version = LIBAVUTIL_VERSION_INT,\
671 * Set the given MpegEncContext to common defaults (same for encoding
672 * and decoding). The changed fields will not depend upon the prior
673 * state of the MpegEncContext.
675 void ff_mpv_common_defaults(MpegEncContext *s);
677 void ff_dct_encode_init_x86(MpegEncContext *s);
679 int ff_mpv_common_init(MpegEncContext *s);
680 void ff_mpv_common_init_arm(MpegEncContext *s);
681 void ff_mpv_common_init_axp(MpegEncContext *s);
682 void ff_mpv_common_init_neon(MpegEncContext *s);
683 void ff_mpv_common_init_ppc(MpegEncContext *s);
684 void ff_mpv_common_init_x86(MpegEncContext *s);
686 int ff_mpv_common_frame_size_change(MpegEncContext *s);
687 void ff_mpv_common_end(MpegEncContext *s);
689 void ff_mpv_decode_defaults(MpegEncContext *s);
690 void ff_mpv_decode_init(MpegEncContext *s, AVCodecContext *avctx);
691 void ff_mpv_decode_mb(MpegEncContext *s, int16_t block[12][64]);
692 void ff_mpv_report_decode_progress(MpegEncContext *s);
694 int ff_mpv_frame_start(MpegEncContext *s, AVCodecContext *avctx);
695 void ff_mpv_frame_end(MpegEncContext *s);
697 int ff_mpv_lowest_referenced_row(MpegEncContext *s, int dir);
699 int ff_mpv_encode_init(AVCodecContext *avctx);
700 void ff_mpv_encode_init_x86(MpegEncContext *s);
702 int ff_mpv_encode_end(AVCodecContext *avctx);
703 int ff_mpv_encode_picture(AVCodecContext *avctx, AVPacket *pkt,
704 const AVFrame *frame, int *got_packet);
705 int ff_mpv_reallocate_putbitbuffer(MpegEncContext *s, size_t threshold, size_t size_increase);
707 void ff_clean_intra_table_entries(MpegEncContext *s);
708 void ff_mpeg_draw_horiz_band(MpegEncContext *s, int y, int h);
709 void ff_mpeg_flush(AVCodecContext *avctx);
711 void ff_print_debug_info(MpegEncContext *s, Picture *p, AVFrame *pict);
712 void ff_print_debug_info2(AVCodecContext *avctx, AVFrame *pict, uint8_t *mbskip_table,
713 uint32_t *mbtype_table, int8_t *qscale_table, int16_t (*motion_val[2])[2],
715 int mb_width, int mb_height, int mb_stride, int quarter_sample);
717 int ff_mpv_export_qp_table(MpegEncContext *s, AVFrame *f, Picture *p, int qp_type);
719 void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix);
721 int ff_find_unused_picture(AVCodecContext *avctx, Picture *picture, int shared);
722 int ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src);
723 int ff_mpeg_update_thread_context(AVCodecContext *dst, const AVCodecContext *src);
724 void ff_set_qscale(MpegEncContext * s, int qscale);
726 void ff_mpv_idct_init(MpegEncContext *s);
727 int ff_dct_encode_init(MpegEncContext *s);
728 void ff_convert_matrix(MpegEncContext *s, int (*qmat)[64], uint16_t (*qmat16)[2][64],
729 const uint16_t *quant_matrix, int bias, int qmin, int qmax, int intra);
730 int ff_dct_quantize_c(MpegEncContext *s, int16_t *block, int n, int qscale, int *overflow);
732 void ff_init_block_index(MpegEncContext *s);
734 void ff_mpv_motion(MpegEncContext *s,
735 uint8_t *dest_y, uint8_t *dest_cb,
736 uint8_t *dest_cr, int dir,
737 uint8_t **ref_picture,
738 op_pixels_func (*pix_op)[4],
739 qpel_mc_func (*qpix_op)[16]);
742 * Allocate a Picture.
743 * The pixels are allocated/set by calling get_buffer() if shared = 0.
745 int ff_alloc_picture(AVCodecContext *avctx, Picture *pic, MotionEstContext *me,
746 ScratchpadContext *sc, int shared, int encoding,
747 int chroma_x_shift, int chroma_y_shift, int out_format,
748 int mb_stride, int mb_width, int mb_height, int b8_stride,
749 ptrdiff_t *linesize, ptrdiff_t *uvlinesize);
751 int ff_mpeg_framesize_alloc(AVCodecContext *avctx, MotionEstContext *me,
752 ScratchpadContext *sc, int linesize);
754 * permute block according to permuatation.
755 * @param last last non zero element in scantable order
757 void ff_block_permute(int16_t *block, uint8_t *permutation, const uint8_t *scantable, int last);
759 static inline void ff_update_block_index(MpegEncContext *s){
760 const int block_size= 8 >> s->avctx->lowres;
762 s->block_index[0]+=2;
763 s->block_index[1]+=2;
764 s->block_index[2]+=2;
765 s->block_index[3]+=2;
768 s->dest[0]+= 2*block_size;
769 s->dest[1]+= block_size;
770 s->dest[2]+= block_size;
773 static inline int get_bits_diff(MpegEncContext *s){
774 const int bits= put_bits_count(&s->pb);
775 const int last= s->last_bits;
783 int ff_rv10_encode_picture_header(MpegEncContext *s, int picture_number);
784 int ff_rv_decode_dc(MpegEncContext *s, int n);
785 void ff_rv20_encode_picture_header(MpegEncContext *s, int picture_number);
787 int ff_mpeg_ref_picture(AVCodecContext *avctx, Picture *dst, Picture *src);
788 void ff_mpeg_unref_picture(AVCodecContext *avctx, Picture *picture);
789 void ff_free_picture_tables(Picture *pic);
792 #endif /* AVCODEC_MPEGVIDEO_H */