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 "mpeg12data.h"
55 #include "libavutil/opt.h"
56 #include "libavutil/timecode.h"
58 #define FRAME_SKIPPED 100 ///< return value for header parsers if frame is not coded
69 #define MAX_THREADS 32
70 #define MAX_PICTURE_COUNT 36
72 #define MAX_B_FRAMES 16
74 #define ME_MAP_SIZE 64
76 #define MAX_MB_BYTES (30*16*16*3/8 + 120)
78 #define INPLACE_OFFSET 16
83 #define SEQ_END_CODE 0x000001b7
84 #define SEQ_START_CODE 0x000001b3
85 #define GOP_START_CODE 0x000001b8
86 #define PICTURE_START_CODE 0x00000100
87 #define SLICE_MIN_START_CODE 0x00000101
88 #define SLICE_MAX_START_CODE 0x000001af
89 #define EXT_START_CODE 0x000001b5
90 #define USER_START_CODE 0x000001b2
95 typedef struct Picture{
99 AVBufferRef *qscale_table_buf;
100 int8_t *qscale_table;
102 AVBufferRef *motion_val_buf[2];
103 int16_t (*motion_val[2])[2];
105 AVBufferRef *mb_type_buf;
106 uint32_t *mb_type; ///< types and macros are defined in mpegutils.h
108 AVBufferRef *mbskip_table_buf;
109 uint8_t *mbskip_table;
111 AVBufferRef *ref_index_buf[2];
112 int8_t *ref_index[2];
114 AVBufferRef *mb_var_buf;
115 uint16_t *mb_var; ///< Table for MB variances
117 AVBufferRef *mc_mb_var_buf;
118 uint16_t *mc_mb_var; ///< Table for motion compensated MB variances
120 int alloc_mb_width; ///< mb_width used to allocate tables
121 int alloc_mb_height; ///< mb_height used to allocate tables
123 AVBufferRef *mb_mean_buf;
124 uint8_t *mb_mean; ///< Table for MB luminance
126 AVBufferRef *hwaccel_priv_buf;
128 * hardware accelerator private data
130 void *hwaccel_picture_private;
132 int field_picture; ///< whether or not the picture was encoded in separate fields
134 int64_t mb_var_sum; ///< sum of MB variance for current frame
135 int64_t mc_mb_var_sum; ///< motion compensated MB variance for current frame
138 int needs_realloc; ///< Picture needs to be reallocated (eg due to a frame size change)
143 uint64_t error[AV_NUM_DATA_POINTERS];
149 typedef struct MpegEncContext {
152 int y_dc_scale, c_dc_scale;
154 int block_last_index[12]; ///< last non zero coefficient in block
155 int h263_aic; ///< Advanded INTRA Coding (AIC)
158 ScanTable inter_scantable; ///< if inter == intra then intra should be used to reduce tha cache usage
159 ScanTable intra_scantable;
160 ScanTable intra_h_scantable;
161 ScanTable intra_v_scantable;
163 /* WARNING: changes above this line require updates to hardcoded
164 * offsets used in asm. */
166 struct AVCodecContext *avctx;
167 /* the following parameters must be initialized before encoding */
168 int width, height;///< picture size. must be a multiple of 16
170 int intra_only; ///< if true, only intra pictures are generated
171 int bit_rate; ///< wanted bit rate
172 enum OutputFormat out_format; ///< output format
173 int h263_pred; ///< use mpeg4/h263 ac/dc predictions
174 int pb_frame; ///< PB frame mode (0 = none, 1 = base, 2 = improved)
176 /* the following codec id fields are deprecated in favor of codec_id */
177 int h263_plus; ///< h263 plus headers
178 int h263_flv; ///< use flv h263 header
180 enum AVCodecID codec_id; /* see AV_CODEC_ID_xxx */
181 int fixed_qscale; ///< fixed qscale if non zero
182 int encoding; ///< true if we are encoding (vs decoding)
183 int max_b_frames; ///< max number of b-frames for encoding
184 int luma_elim_threshold;
185 int chroma_elim_threshold;
186 int strict_std_compliance; ///< strictly follow the std (MPEG4, ...)
187 int workaround_bugs; ///< workaround bugs in encoders which cannot be detected automatically
188 int codec_tag; ///< internal codec_tag upper case converted from avctx codec_tag
189 /* the following fields are managed internally by the encoder */
191 /* sequence parameters */
192 int context_initialized;
193 int input_picture_number; ///< used to set pic->display_picture_number, should not be used for/by anything else
194 int coded_picture_number; ///< used to set pic->coded_picture_number, should not be used for/by anything else
195 int picture_number; //FIXME remove, unclear definition
196 int picture_in_gop_number; ///< 0-> first pic in gop, ...
197 int mb_width, mb_height; ///< number of MBs horizontally & vertically
198 int mb_stride; ///< mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11
199 int b8_stride; ///< 2*mb_width+1 used for some 8x8 block arrays to allow simple addressing
200 int h_edge_pos, v_edge_pos;///< horizontal / vertical position of the right/bottom edge (pixel replication)
201 int mb_num; ///< number of MBs of a picture
202 ptrdiff_t linesize; ///< line size, in bytes, may be different from width
203 ptrdiff_t uvlinesize; ///< line size, for chroma in bytes, may be different from width
204 Picture *picture; ///< main picture buffer
205 Picture **input_picture; ///< next pictures on display order for encoding
206 Picture **reordered_input_picture; ///< pointer to the next pictures in codedorder for encoding
208 int64_t user_specified_pts; ///< last non-zero pts from AVFrame which was passed into avcodec_encode_video2()
210 * pts difference between the first and second input frame, used for
211 * calculating dts of the first frame when there's a delay */
214 * reordered pts to be used as dts for the next output frame when there's
216 int64_t reordered_pts;
221 int start_mb_y; ///< start mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
222 int end_mb_y; ///< end mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
223 struct MpegEncContext *thread_context[MAX_THREADS];
224 int slice_context_count; ///< number of used thread_contexts
227 * copy of the previous picture structure.
228 * note, linesize & data, might not match the previous picture (for field pictures)
230 Picture last_picture;
233 * copy of the next picture structure.
234 * note, linesize & data, might not match the next picture (for field pictures)
236 Picture next_picture;
239 * copy of the source picture structure for encoding.
240 * note, linesize & data, might not match the source picture (for field pictures)
245 * copy of the current picture structure.
246 * note, linesize & data, might not match the current picture (for field pictures)
248 Picture current_picture; ///< buffer to store the decompressed current picture
250 Picture *last_picture_ptr; ///< pointer to the previous picture.
251 Picture *next_picture_ptr; ///< pointer to the next picture (for bidir pred)
252 Picture *current_picture_ptr; ///< pointer to the current picture
253 int last_dc[3]; ///< last DC values for MPEG1
254 int16_t *dc_val_base;
255 int16_t *dc_val[3]; ///< used for mpeg4 DC prediction, all 3 arrays must be continuous
256 const uint8_t *y_dc_scale_table; ///< qscale -> y_dc_scale table
257 const uint8_t *c_dc_scale_table; ///< qscale -> c_dc_scale table
258 const uint8_t *chroma_qscale_table; ///< qscale -> chroma_qscale (h263)
259 uint8_t *coded_block_base;
260 uint8_t *coded_block; ///< used for coded block pattern prediction (msmpeg4v3, wmv1)
261 int16_t (*ac_val_base)[16];
262 int16_t (*ac_val[3])[16]; ///< used for mpeg4 AC prediction, all 3 arrays must be continuous
263 int mb_skipped; ///< MUST BE SET only during DECODING
264 uint8_t *mbskip_table; /**< used to avoid copy if macroblock skipped (for black regions for example)
265 and used for b-frame encoding & decoding (contains skip table of next P Frame) */
266 uint8_t *mbintra_table; ///< used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
267 uint8_t *cbp_table; ///< used to store cbp, ac_pred for partitioned decoding
268 uint8_t *pred_dir_table; ///< used to store pred_dir for partitioned decoding
269 uint8_t *edge_emu_buffer; ///< temporary buffer for if MVs point to out-of-frame data
270 uint8_t *rd_scratchpad; ///< scratchpad for rate distortion mb decision
271 uint8_t *obmc_scratchpad;
272 uint8_t *b_scratchpad; ///< scratchpad used for writing into write only buffers
275 int chroma_qscale; ///< chroma QP
276 unsigned int lambda; ///< lagrange multipler used in rate distortion
277 unsigned int lambda2; ///< (lambda*lambda) >> FF_LAMBDA_SHIFT
279 int adaptive_quant; ///< use adaptive quantization
280 int dquant; ///< qscale difference to prev qscale
281 int closed_gop; ///< MPEG1/2 GOP is closed
282 int pict_type; ///< AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
284 int last_pict_type; //FIXME removes
285 int last_non_b_pict_type; ///< used for mpeg4 gmc b-frames & ratecontrol
287 int frame_rate_index;
288 AVRational mpeg2_frame_rate_ext;
289 int last_lambda_for[5]; ///< last lambda for a specific pict type
290 int skipdct; ///< skip dct and code zero residual
292 /* motion compensation */
293 int unrestricted_mv; ///< mv can point outside of the coded picture
294 int h263_long_vectors; ///< use horrible h263v1 long vector mode
296 BlockDSPContext bdsp;
298 H264ChromaContext h264chroma;
302 MpegVideoDSPContext mdsp;
303 MpegvideoEncDSPContext mpvencdsp;
304 PixblockDSPContext pdsp;
306 VideoDSPContext vdsp;
307 H263DSPContext h263dsp;
308 int f_code; ///< forward MV resolution
309 int b_code; ///< backward MV resolution for B Frames (mpeg4)
310 int16_t (*p_mv_table_base)[2];
311 int16_t (*b_forw_mv_table_base)[2];
312 int16_t (*b_back_mv_table_base)[2];
313 int16_t (*b_bidir_forw_mv_table_base)[2];
314 int16_t (*b_bidir_back_mv_table_base)[2];
315 int16_t (*b_direct_mv_table_base)[2];
316 int16_t (*p_field_mv_table_base[2][2])[2];
317 int16_t (*b_field_mv_table_base[2][2][2])[2];
318 int16_t (*p_mv_table)[2]; ///< MV table (1MV per MB) p-frame encoding
319 int16_t (*b_forw_mv_table)[2]; ///< MV table (1MV per MB) forward mode b-frame encoding
320 int16_t (*b_back_mv_table)[2]; ///< MV table (1MV per MB) backward mode b-frame encoding
321 int16_t (*b_bidir_forw_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
322 int16_t (*b_bidir_back_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
323 int16_t (*b_direct_mv_table)[2]; ///< MV table (1MV per MB) direct mode b-frame encoding
324 int16_t (*p_field_mv_table[2][2])[2]; ///< MV table (2MV per MB) interlaced p-frame encoding
325 int16_t (*b_field_mv_table[2][2][2])[2];///< MV table (4MV per MB) interlaced b-frame encoding
326 uint8_t (*p_field_select_table[2]);
327 uint8_t (*b_field_select_table[2][2]);
328 int me_method; ///< ME algorithm
330 #define MV_DIR_FORWARD 1
331 #define MV_DIR_BACKWARD 2
332 #define MV_DIRECT 4 ///< bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4)
334 #define MV_TYPE_16X16 0 ///< 1 vector for the whole mb
335 #define MV_TYPE_8X8 1 ///< 4 vectors (h263, mpeg4 4MV)
336 #define MV_TYPE_16X8 2 ///< 2 vectors, one per 16x8 block
337 #define MV_TYPE_FIELD 3 ///< 2 vectors, one per field
338 #define MV_TYPE_DMV 4 ///< 2 vectors, special mpeg2 Dual Prime Vectors
339 /**motion vectors for a macroblock
340 first coordinate : 0 = forward 1 = backward
341 second " : depend on type
342 third " : 0 = x, 1 = y
345 int field_select[2][2];
346 int last_mv[2][2][2]; ///< last MV, used for MV prediction in MPEG1 & B-frame MPEG4
347 uint8_t *fcode_tab; ///< smallest fcode needed for each MV
348 int16_t direct_scale_mv[2][64]; ///< precomputed to avoid divisions in ff_mpeg4_set_direct_mv
352 int no_rounding; /**< apply no rounding to motion compensation (MPEG4, msmpeg4, ...)
353 for b-frames rounding mode is always 0 */
355 /* macroblock layer */
359 uint16_t *mb_type; ///< Table for candidate MB types for encoding (defines in mpegutils.h)
361 int block_index[6]; ///< index to current MB in block based arrays with edges
365 int *mb_index2xy; ///< mb_index -> mb_x + mb_y*mb_stride
367 /** matrix transmitted in the bitstream */
368 uint16_t intra_matrix[64];
369 uint16_t chroma_intra_matrix[64];
370 uint16_t inter_matrix[64];
371 uint16_t chroma_inter_matrix[64];
373 int intra_quant_bias; ///< bias for the quantizer
374 int inter_quant_bias; ///< bias for the quantizer
375 int min_qcoeff; ///< minimum encodable coefficient
376 int max_qcoeff; ///< maximum encodable coefficient
377 int ac_esc_length; ///< num of bits needed to encode the longest esc
378 uint8_t *intra_ac_vlc_length;
379 uint8_t *intra_ac_vlc_last_length;
380 uint8_t *intra_chroma_ac_vlc_length;
381 uint8_t *intra_chroma_ac_vlc_last_length;
382 uint8_t *inter_ac_vlc_length;
383 uint8_t *inter_ac_vlc_last_length;
384 uint8_t *luma_dc_vlc_length;
385 #define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level))
389 /** precomputed matrix (combine qscale and DCT renorm) */
390 int (*q_intra_matrix)[64];
391 int (*q_chroma_intra_matrix)[64];
392 int (*q_inter_matrix)[64];
393 /** identical to the above but for MMX & these are not permutated, second 64 entries are bias*/
394 uint16_t (*q_intra_matrix16)[2][64];
395 uint16_t (*q_chroma_intra_matrix16)[2][64];
396 uint16_t (*q_inter_matrix16)[2][64];
398 /* noise reduction */
399 int (*dct_error_sum)[64];
401 uint16_t (*dct_offset)[64];
403 /* bit rate control */
405 int frame_bits; ///< bits used for the current frame
406 int stuffing_bits; ///< bits used for stuffing
407 int next_lambda; ///< next lambda used for retrying to encode a frame
408 RateControlContext rc_context; ///< contains stuff only accessed in ratecontrol.c
410 /* statistics, used for 2-pass encoding */
419 int misc_bits; ///< cbp, mb_type
420 int last_bits; ///< temp var used for calculating the above vars
422 /* error concealment / resync */
423 int resync_mb_x; ///< x position of last resync marker
424 int resync_mb_y; ///< y position of last resync marker
425 GetBitContext last_resync_gb; ///< used to search for the next resync marker
426 int mb_num_left; ///< number of MBs left in this video packet (for partitioned Slices only)
427 int next_p_frame_damaged; ///< set if the next p frame is damaged, to avoid showing trashed b frames
429 ParseContext parse_context;
433 int obmc; ///< overlapped block motion compensation
434 int mb_info; ///< interval for outputting info about mb offsets as side data
435 int prev_mb_info, last_mb_info;
436 uint8_t *mb_info_ptr;
440 /* H.263+ specific */
441 int umvplus; ///< == H263+ && unrestricted_mv
442 int h263_aic_dir; ///< AIC direction: 0 = left, 1 = top
443 int h263_slice_structured;
444 int alt_inter_vlc; ///< alternative inter vlc
450 ///< number of bits to represent the fractional part of time (encoder only)
451 int time_increment_bits;
453 int time_base; ///< time in seconds of last I,P,S Frame
454 int64_t time; ///< time of current frame
455 int64_t last_non_b_time;
456 uint16_t pp_time; ///< time distance between the last 2 p,s,i frames
457 uint16_t pb_time; ///< time distance between the last b and p,s,i frame
458 uint16_t pp_field_time;
459 uint16_t pb_field_time; ///< like above, just for interlaced
460 int real_sprite_warping_points;
461 int sprite_offset[2][2]; ///< sprite offset[isChroma][isMVY]
462 int sprite_delta[2][2]; ///< sprite_delta [isY][isMVY]
465 int quarter_sample; ///< 1->qpel, 0->half pel ME/MC
466 int aspect_ratio_info; //FIXME remove
467 int sprite_warping_accuracy;
468 int data_partitioning; ///< data partitioning flag from header
469 int partitioned_frame; ///< is current frame partitioned
470 int low_delay; ///< no reordering needed / has no b-frames
472 PutBitContext tex_pb; ///< used for data partitioned VOPs
473 PutBitContext pb2; ///< used for data partitioned VOPs
475 int padding_bug_score; ///< used to detect the VERY common padding bug in MPEG4
477 /* divx specific, used to workaround (many) bugs in divx5 */
479 uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
480 int bitstream_buffer_size;
481 unsigned int allocated_bitstream_buffer_size;
484 int rv10_version; ///< RV10 version: 0 or 3
485 int rv10_first_dc_coded[3];
488 struct MJpegContext *mjpeg_ctx;
491 /* MSMPEG4 specific */
494 int rl_chroma_table_index;
496 int use_skip_mb_code;
497 int slice_height; ///< in macroblocks
498 int first_slice_line; ///< used in mpeg4 too to handle resync markers
499 int flipflop_rounding;
500 int msmpeg4_version; ///< 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8
502 int esc3_level_length;
504 /** [mb_intra][isChroma][level][run][last] */
505 int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2];
506 int inter_intra_pred;
509 /* decompression specific */
513 int gop_picture_number; ///< index of the first picture of a GOP based on fake_pic_num & mpeg1 specific
514 int last_mv_dir; ///< last mv_dir, used for b frame encoding
515 uint8_t *vbv_delay_ptr; ///< pointer to vbv_delay in the bitstream
517 /* MPEG-2-specific - I wished not to have to support this mess. */
518 int progressive_sequence;
519 int mpeg_f_code[2][2];
521 // picture structure defines are loaded from mpegutils.h
522 int picture_structure;
524 int intra_dc_precision;
525 int frame_pred_frame_dct;
527 int concealment_motion_vectors;
529 int intra_vlc_format;
532 int repeat_first_field;
538 int chroma_x_shift;//depend on pix_format, that depend on chroma_format
541 int progressive_frame;
544 int first_field; ///< is 1 for the first field of a field picture 0 otherwise
545 int drop_frame_timecode; ///< timecode is in drop frame format.
546 int scan_offset; ///< reserve space for SVCD scan offset user data.
551 char *tc_opt_str; ///< timecode option string
552 AVTimecode tc; ///< timecode context
554 uint8_t *ptr_lastgob;
555 int swap_uv; //vcr2 codec is an MPEG-2 variant with U and V swapped
556 int pack_pblocks; //xvmc needs to keep blocks without gaps.
557 int16_t (*pblocks[12])[64];
559 int16_t (*block)[64]; ///< points to one of the following blocks
560 int16_t (*blocks)[12][64]; // for HQ mode we need to keep the best block
561 int (*decode_mb)(struct MpegEncContext *s, int16_t block[6][64]); // used by some codecs to avoid a switch()
563 #define SLICE_ERROR -1
564 #define SLICE_END -2 ///<end marker found
565 #define SLICE_NOEND -3 ///<no end marker or error found but mb count exceeded
567 void (*dct_unquantize_mpeg1_intra)(struct MpegEncContext *s,
568 int16_t *block/*align 16*/, int n, int qscale);
569 void (*dct_unquantize_mpeg1_inter)(struct MpegEncContext *s,
570 int16_t *block/*align 16*/, int n, int qscale);
571 void (*dct_unquantize_mpeg2_intra)(struct MpegEncContext *s,
572 int16_t *block/*align 16*/, int n, int qscale);
573 void (*dct_unquantize_mpeg2_inter)(struct MpegEncContext *s,
574 int16_t *block/*align 16*/, int n, int qscale);
575 void (*dct_unquantize_h263_intra)(struct MpegEncContext *s,
576 int16_t *block/*align 16*/, int n, int qscale);
577 void (*dct_unquantize_h263_inter)(struct MpegEncContext *s,
578 int16_t *block/*align 16*/, int n, int qscale);
579 void (*dct_unquantize_intra)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
580 int16_t *block/*align 16*/, int n, int qscale);
581 void (*dct_unquantize_inter)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
582 int16_t *block/*align 16*/, int n, int qscale);
583 int (*dct_quantize)(struct MpegEncContext *s, int16_t *block/*align 16*/, int n, int qscale, int *overflow);
584 int (*fast_dct_quantize)(struct MpegEncContext *s, int16_t *block/*align 16*/, int n, int qscale, int *overflow);
585 void (*denoise_dct)(struct MpegEncContext *s, int16_t *block);
587 int mpv_flags; ///< flags set by private options
588 int quantizer_noise_shaping;
591 * ratecontrol qmin qmax limiting method
592 * 0-> clipping, 1-> use a nice continuous function to limit qscale within qmin/qmax.
597 float rc_initial_cplx;
598 float rc_buffer_aggressivity;
599 float border_masking;
604 /* temp buffers for rate control */
605 float *cplx_tab, *bits_tab;
607 /* flag to indicate a reinitialization is required, e.g. after
608 * a frame size change */
615 /* temporary frames used by b_frame_strategy = 2 */
616 AVFrame *tmp_frames[MAX_B_FRAMES + 2];
619 /* mpegvideo_enc common options */
620 #define FF_MPV_FLAG_SKIP_RD 0x0001
621 #define FF_MPV_FLAG_STRICT_GOP 0x0002
622 #define FF_MPV_FLAG_QP_RD 0x0004
623 #define FF_MPV_FLAG_CBP_RD 0x0008
624 #define FF_MPV_FLAG_NAQ 0x0010
625 #define FF_MPV_FLAG_MV0 0x0020
627 #ifndef FF_MPV_OFFSET
628 #define FF_MPV_OFFSET(x) offsetof(MpegEncContext, x)
630 #define FF_MPV_OPT_FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
631 #define FF_MPV_COMMON_OPTS \
632 { "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" },\
633 { "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" },\
634 { "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" },\
635 { "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" },\
636 { "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" },\
637 { "naq", "normalize adaptive quantization", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_NAQ }, 0, 0, FF_MPV_OPT_FLAGS, "mpv_flags" },\
638 { "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" },\
639 { "luma_elim_threshold", "single coefficient elimination threshold for luminance (negative values also consider dc coefficient)",\
640 FF_MPV_OFFSET(luma_elim_threshold), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS },\
641 { "chroma_elim_threshold", "single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)",\
642 FF_MPV_OFFSET(chroma_elim_threshold), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS },\
643 { "quantizer_noise_shaping", NULL, FF_MPV_OFFSET(quantizer_noise_shaping), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FF_MPV_OPT_FLAGS },\
644 { "error_rate", "Simulate errors in the bitstream to test error concealment.", \
645 FF_MPV_OFFSET(error_rate), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FF_MPV_OPT_FLAGS },\
646 {"qsquish", "how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function)", \
647 FF_MPV_OFFSET(rc_qsquish), AV_OPT_TYPE_FLOAT, {.dbl = 0 }, 0, 99, FF_MPV_OPT_FLAGS}, \
648 {"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}, \
649 {"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}, \
650 {"rc_eq", "Set rate control equation. When computing the expression, besides the standard functions " \
651 "defined in the section 'Expression Evaluation', the following functions are available: " \
652 "bits2qp(bits), qp2bits(qp). Also the following constants are available: iTex pTex tex mv " \
653 "fCode iCount mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex avgTex.", \
654 FF_MPV_OFFSET(rc_eq), AV_OPT_TYPE_STRING, .flags = FF_MPV_OPT_FLAGS }, \
655 {"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}, \
656 {"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}, \
657 {"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}, \
658 {"lmin", "minimum Lagrange factor (VBR)", FF_MPV_OFFSET(lmin), AV_OPT_TYPE_INT, {.i64 = 2*FF_QP2LAMBDA }, 0, INT_MAX, FF_MPV_OPT_FLAGS }, \
659 {"lmax", "maximum Lagrange factor (VBR)", FF_MPV_OFFSET(lmax), AV_OPT_TYPE_INT, {.i64 = 31*FF_QP2LAMBDA }, 0, INT_MAX, FF_MPV_OPT_FLAGS }, \
661 extern const AVOption ff_mpv_generic_options[];
663 #define FF_MPV_GENERIC_CLASS(name) \
664 static const AVClass name ## _class = {\
665 .class_name = #name " encoder",\
666 .item_name = av_default_item_name,\
667 .option = ff_mpv_generic_options,\
668 .version = LIBAVUTIL_VERSION_INT,\
672 * Set the given MpegEncContext to common defaults (same for encoding
673 * and decoding). The changed fields will not depend upon the prior
674 * state of the MpegEncContext.
676 void ff_mpv_common_defaults(MpegEncContext *s);
678 void ff_dct_encode_init_x86(MpegEncContext *s);
680 int ff_mpv_common_init(MpegEncContext *s);
681 void ff_mpv_common_init_arm(MpegEncContext *s);
682 void ff_mpv_common_init_axp(MpegEncContext *s);
683 void ff_mpv_common_init_neon(MpegEncContext *s);
684 void ff_mpv_common_init_ppc(MpegEncContext *s);
685 void ff_mpv_common_init_x86(MpegEncContext *s);
687 int ff_mpv_common_frame_size_change(MpegEncContext *s);
688 void ff_mpv_common_end(MpegEncContext *s);
690 void ff_mpv_decode_defaults(MpegEncContext *s);
691 void ff_mpv_decode_init(MpegEncContext *s, AVCodecContext *avctx);
692 void ff_mpv_decode_mb(MpegEncContext *s, int16_t block[12][64]);
693 void ff_mpv_report_decode_progress(MpegEncContext *s);
695 int ff_mpv_frame_start(MpegEncContext *s, AVCodecContext *avctx);
696 void ff_mpv_frame_end(MpegEncContext *s);
698 int ff_mpv_lowest_referenced_row(MpegEncContext *s, int dir);
700 int ff_mpv_encode_init(AVCodecContext *avctx);
701 void ff_mpv_encode_init_x86(MpegEncContext *s);
703 int ff_mpv_encode_end(AVCodecContext *avctx);
704 int ff_mpv_encode_picture(AVCodecContext *avctx, AVPacket *pkt,
705 const AVFrame *frame, int *got_packet);
706 int ff_mpv_reallocate_putbitbuffer(MpegEncContext *s, size_t threshold, size_t size_increase);
708 void ff_clean_intra_table_entries(MpegEncContext *s);
709 void ff_mpeg_draw_horiz_band(MpegEncContext *s, int y, int h);
710 void ff_mpeg_flush(AVCodecContext *avctx);
712 void ff_print_debug_info(MpegEncContext *s, Picture *p, AVFrame *pict);
713 void ff_print_debug_info2(AVCodecContext *avctx, AVFrame *pict, uint8_t *mbskip_table,
714 uint32_t *mbtype_table, int8_t *qscale_table, int16_t (*motion_val[2])[2],
716 int mb_width, int mb_height, int mb_stride, int quarter_sample);
718 int ff_mpv_export_qp_table(MpegEncContext *s, AVFrame *f, Picture *p, int qp_type);
720 void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix);
722 int ff_find_unused_picture(AVCodecContext *avctx, Picture *picture, int shared);
723 int ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src);
724 int ff_mpeg_update_thread_context(AVCodecContext *dst, const AVCodecContext *src);
725 void ff_set_qscale(MpegEncContext * s, int qscale);
727 void ff_mpv_idct_init(MpegEncContext *s);
728 int ff_dct_encode_init(MpegEncContext *s);
729 void ff_convert_matrix(MpegEncContext *s, int (*qmat)[64], uint16_t (*qmat16)[2][64],
730 const uint16_t *quant_matrix, int bias, int qmin, int qmax, int intra);
731 int ff_dct_quantize_c(MpegEncContext *s, int16_t *block, int n, int qscale, int *overflow);
733 void ff_init_block_index(MpegEncContext *s);
735 void ff_mpv_motion(MpegEncContext *s,
736 uint8_t *dest_y, uint8_t *dest_cb,
737 uint8_t *dest_cr, int dir,
738 uint8_t **ref_picture,
739 op_pixels_func (*pix_op)[4],
740 qpel_mc_func (*qpix_op)[16]);
743 * Allocate a Picture.
744 * The pixels are allocated/set by calling get_buffer() if shared = 0.
746 int ff_alloc_picture(MpegEncContext *s, Picture *pic, int shared);
749 * permute block according to permuatation.
750 * @param last last non zero element in scantable order
752 void ff_block_permute(int16_t *block, uint8_t *permutation, const uint8_t *scantable, int last);
754 static inline void ff_update_block_index(MpegEncContext *s){
755 const int block_size= 8 >> s->avctx->lowres;
757 s->block_index[0]+=2;
758 s->block_index[1]+=2;
759 s->block_index[2]+=2;
760 s->block_index[3]+=2;
763 s->dest[0]+= 2*block_size;
764 s->dest[1]+= block_size;
765 s->dest[2]+= block_size;
768 static inline int get_bits_diff(MpegEncContext *s){
769 const int bits= put_bits_count(&s->pb);
770 const int last= s->last_bits;
778 int ff_rv10_encode_picture_header(MpegEncContext *s, int picture_number);
779 int ff_rv_decode_dc(MpegEncContext *s, int n);
780 void ff_rv20_encode_picture_header(MpegEncContext *s, int picture_number);
782 int ff_mpeg_ref_picture(AVCodecContext *avctx, Picture *dst, Picture *src);
783 void ff_mpeg_unref_picture(AVCodecContext *avctx, Picture *picture);
784 void ff_free_picture_tables(Picture *pic);
787 #endif /* AVCODEC_MPEGVIDEO_H */