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"
44 #include "motion_est.h"
45 #include "mpegpicture.h"
46 #include "mpegvideodsp.h"
47 #include "mpegvideoencdsp.h"
48 #include "pixblockdsp.h"
50 #include "ratecontrol.h"
52 #include "mpegutils.h"
53 #include "mpeg12data.h"
58 #include "libavutil/opt.h"
59 #include "libavutil/timecode.h"
61 #define FRAME_SKIPPED 100 ///< return value for header parsers if frame is not coded
65 #define MAX_THREADS 32
67 #define MAX_B_FRAMES 16
69 #define ME_MAP_SIZE 64
71 #define MAX_MB_BYTES (30*16*16*3/8 + 120)
73 #define INPLACE_OFFSET 16
76 #define SEQ_END_CODE 0x000001b7
77 #define SEQ_START_CODE 0x000001b3
78 #define GOP_START_CODE 0x000001b8
79 #define PICTURE_START_CODE 0x00000100
80 #define SLICE_MIN_START_CODE 0x00000101
81 #define SLICE_MAX_START_CODE 0x000001af
82 #define EXT_START_CODE 0x000001b5
83 #define USER_START_CODE 0x000001b2
88 typedef struct MpegEncContext {
91 int y_dc_scale, c_dc_scale;
93 int block_last_index[12]; ///< last non zero coefficient in block
94 int h263_aic; ///< Advanded INTRA Coding (AIC)
97 ScanTable inter_scantable; ///< if inter == intra then intra should be used to reduce tha cache usage
98 ScanTable intra_scantable;
99 ScanTable intra_h_scantable;
100 ScanTable intra_v_scantable;
102 /* WARNING: changes above this line require updates to hardcoded
103 * offsets used in asm. */
105 struct AVCodecContext *avctx;
106 /* the following parameters must be initialized before encoding */
107 int width, height;///< picture size. must be a multiple of 16
109 int intra_only; ///< if true, only intra pictures are generated
110 int bit_rate; ///< wanted bit rate
111 enum OutputFormat out_format; ///< output format
112 int h263_pred; ///< use mpeg4/h263 ac/dc predictions
113 int pb_frame; ///< PB frame mode (0 = none, 1 = base, 2 = improved)
115 /* the following codec id fields are deprecated in favor of codec_id */
116 int h263_plus; ///< h263 plus headers
117 int h263_flv; ///< use flv h263 header
119 enum AVCodecID codec_id; /* see AV_CODEC_ID_xxx */
120 int fixed_qscale; ///< fixed qscale if non zero
121 int encoding; ///< true if we are encoding (vs decoding)
122 int max_b_frames; ///< max number of b-frames for encoding
123 int luma_elim_threshold;
124 int chroma_elim_threshold;
125 int strict_std_compliance; ///< strictly follow the std (MPEG4, ...)
126 int workaround_bugs; ///< workaround bugs in encoders which cannot be detected automatically
127 int codec_tag; ///< internal codec_tag upper case converted from avctx codec_tag
128 /* the following fields are managed internally by the encoder */
130 /* sequence parameters */
131 int context_initialized;
132 int input_picture_number; ///< used to set pic->display_picture_number, should not be used for/by anything else
133 int coded_picture_number; ///< used to set pic->coded_picture_number, should not be used for/by anything else
134 int picture_number; //FIXME remove, unclear definition
135 int picture_in_gop_number; ///< 0-> first pic in gop, ...
136 int mb_width, mb_height; ///< number of MBs horizontally & vertically
137 int mb_stride; ///< mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11
138 int b8_stride; ///< 2*mb_width+1 used for some 8x8 block arrays to allow simple addressing
139 int h_edge_pos, v_edge_pos;///< horizontal / vertical position of the right/bottom edge (pixel replication)
140 int mb_num; ///< number of MBs of a picture
141 ptrdiff_t linesize; ///< line size, in bytes, may be different from width
142 ptrdiff_t uvlinesize; ///< line size, for chroma in bytes, may be different from width
143 Picture *picture; ///< main picture buffer
144 Picture **input_picture; ///< next pictures on display order for encoding
145 Picture **reordered_input_picture; ///< pointer to the next pictures in codedorder for encoding
147 int64_t user_specified_pts; ///< last non-zero pts from AVFrame which was passed into avcodec_encode_video2()
149 * pts difference between the first and second input frame, used for
150 * calculating dts of the first frame when there's a delay */
153 * reordered pts to be used as dts for the next output frame when there's
155 int64_t reordered_pts;
160 int start_mb_y; ///< start mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
161 int end_mb_y; ///< end mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
162 struct MpegEncContext *thread_context[MAX_THREADS];
163 int slice_context_count; ///< number of used thread_contexts
166 * copy of the previous picture structure.
167 * note, linesize & data, might not match the previous picture (for field pictures)
169 Picture last_picture;
172 * copy of the next picture structure.
173 * note, linesize & data, might not match the next picture (for field pictures)
175 Picture next_picture;
178 * copy of the source picture structure for encoding.
179 * note, linesize & data, might not match the source picture (for field pictures)
184 * copy of the current picture structure.
185 * note, linesize & data, might not match the current picture (for field pictures)
187 Picture current_picture; ///< buffer to store the decompressed current picture
189 Picture *last_picture_ptr; ///< pointer to the previous picture.
190 Picture *next_picture_ptr; ///< pointer to the next picture (for bidir pred)
191 Picture *current_picture_ptr; ///< pointer to the current picture
192 int last_dc[3]; ///< last DC values for MPEG1
193 int16_t *dc_val_base;
194 int16_t *dc_val[3]; ///< used for mpeg4 DC prediction, all 3 arrays must be continuous
195 const uint8_t *y_dc_scale_table; ///< qscale -> y_dc_scale table
196 const uint8_t *c_dc_scale_table; ///< qscale -> c_dc_scale table
197 const uint8_t *chroma_qscale_table; ///< qscale -> chroma_qscale (h263)
198 uint8_t *coded_block_base;
199 uint8_t *coded_block; ///< used for coded block pattern prediction (msmpeg4v3, wmv1)
200 int16_t (*ac_val_base)[16];
201 int16_t (*ac_val[3])[16]; ///< used for mpeg4 AC prediction, all 3 arrays must be continuous
202 int mb_skipped; ///< MUST BE SET only during DECODING
203 uint8_t *mbskip_table; /**< used to avoid copy if macroblock skipped (for black regions for example)
204 and used for b-frame encoding & decoding (contains skip table of next P Frame) */
205 uint8_t *mbintra_table; ///< used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
206 uint8_t *cbp_table; ///< used to store cbp, ac_pred for partitioned decoding
207 uint8_t *pred_dir_table; ///< used to store pred_dir for partitioned decoding
209 ScratchpadContext sc;
212 int chroma_qscale; ///< chroma QP
213 unsigned int lambda; ///< lagrange multipler used in rate distortion
214 unsigned int lambda2; ///< (lambda*lambda) >> FF_LAMBDA_SHIFT
216 int adaptive_quant; ///< use adaptive quantization
217 int dquant; ///< qscale difference to prev qscale
218 int closed_gop; ///< MPEG1/2 GOP is closed
219 int pict_type; ///< AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
221 int last_pict_type; //FIXME removes
222 int last_non_b_pict_type; ///< used for mpeg4 gmc b-frames & ratecontrol
224 int frame_rate_index;
225 AVRational mpeg2_frame_rate_ext;
226 int last_lambda_for[5]; ///< last lambda for a specific pict type
227 int skipdct; ///< skip dct and code zero residual
229 /* motion compensation */
230 int unrestricted_mv; ///< mv can point outside of the coded picture
231 int h263_long_vectors; ///< use horrible h263v1 long vector mode
233 BlockDSPContext bdsp;
235 H264ChromaContext h264chroma;
239 MpegVideoDSPContext mdsp;
240 MpegvideoEncDSPContext mpvencdsp;
241 PixblockDSPContext pdsp;
243 VideoDSPContext vdsp;
244 H263DSPContext h263dsp;
245 int f_code; ///< forward MV resolution
246 int b_code; ///< backward MV resolution for B Frames (mpeg4)
247 int16_t (*p_mv_table_base)[2];
248 int16_t (*b_forw_mv_table_base)[2];
249 int16_t (*b_back_mv_table_base)[2];
250 int16_t (*b_bidir_forw_mv_table_base)[2];
251 int16_t (*b_bidir_back_mv_table_base)[2];
252 int16_t (*b_direct_mv_table_base)[2];
253 int16_t (*p_field_mv_table_base[2][2])[2];
254 int16_t (*b_field_mv_table_base[2][2][2])[2];
255 int16_t (*p_mv_table)[2]; ///< MV table (1MV per MB) p-frame encoding
256 int16_t (*b_forw_mv_table)[2]; ///< MV table (1MV per MB) forward mode b-frame encoding
257 int16_t (*b_back_mv_table)[2]; ///< MV table (1MV per MB) backward mode b-frame encoding
258 int16_t (*b_bidir_forw_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
259 int16_t (*b_bidir_back_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
260 int16_t (*b_direct_mv_table)[2]; ///< MV table (1MV per MB) direct mode b-frame encoding
261 int16_t (*p_field_mv_table[2][2])[2]; ///< MV table (2MV per MB) interlaced p-frame encoding
262 int16_t (*b_field_mv_table[2][2][2])[2];///< MV table (4MV per MB) interlaced b-frame encoding
263 uint8_t (*p_field_select_table[2]);
264 uint8_t (*b_field_select_table[2][2]);
265 int me_method; ///< ME algorithm
267 #define MV_DIR_FORWARD 1
268 #define MV_DIR_BACKWARD 2
269 #define MV_DIRECT 4 ///< bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4)
271 #define MV_TYPE_16X16 0 ///< 1 vector for the whole mb
272 #define MV_TYPE_8X8 1 ///< 4 vectors (h263, mpeg4 4MV)
273 #define MV_TYPE_16X8 2 ///< 2 vectors, one per 16x8 block
274 #define MV_TYPE_FIELD 3 ///< 2 vectors, one per field
275 #define MV_TYPE_DMV 4 ///< 2 vectors, special mpeg2 Dual Prime Vectors
276 /**motion vectors for a macroblock
277 first coordinate : 0 = forward 1 = backward
278 second " : depend on type
279 third " : 0 = x, 1 = y
282 int field_select[2][2];
283 int last_mv[2][2][2]; ///< last MV, used for MV prediction in MPEG1 & B-frame MPEG4
284 uint8_t *fcode_tab; ///< smallest fcode needed for each MV
285 int16_t direct_scale_mv[2][64]; ///< precomputed to avoid divisions in ff_mpeg4_set_direct_mv
289 int no_rounding; /**< apply no rounding to motion compensation (MPEG4, msmpeg4, ...)
290 for b-frames rounding mode is always 0 */
292 /* macroblock layer */
296 uint16_t *mb_type; ///< Table for candidate MB types for encoding (defines in mpegutils.h)
298 int block_index[6]; ///< index to current MB in block based arrays with edges
302 int *mb_index2xy; ///< mb_index -> mb_x + mb_y*mb_stride
304 /** matrix transmitted in the bitstream */
305 uint16_t intra_matrix[64];
306 uint16_t chroma_intra_matrix[64];
307 uint16_t inter_matrix[64];
308 uint16_t chroma_inter_matrix[64];
310 int intra_quant_bias; ///< bias for the quantizer
311 int inter_quant_bias; ///< bias for the quantizer
312 int min_qcoeff; ///< minimum encodable coefficient
313 int max_qcoeff; ///< maximum encodable coefficient
314 int ac_esc_length; ///< num of bits needed to encode the longest esc
315 uint8_t *intra_ac_vlc_length;
316 uint8_t *intra_ac_vlc_last_length;
317 uint8_t *intra_chroma_ac_vlc_length;
318 uint8_t *intra_chroma_ac_vlc_last_length;
319 uint8_t *inter_ac_vlc_length;
320 uint8_t *inter_ac_vlc_last_length;
321 uint8_t *luma_dc_vlc_length;
322 #define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level))
326 /** precomputed matrix (combine qscale and DCT renorm) */
327 int (*q_intra_matrix)[64];
328 int (*q_chroma_intra_matrix)[64];
329 int (*q_inter_matrix)[64];
330 /** identical to the above but for MMX & these are not permutated, second 64 entries are bias*/
331 uint16_t (*q_intra_matrix16)[2][64];
332 uint16_t (*q_chroma_intra_matrix16)[2][64];
333 uint16_t (*q_inter_matrix16)[2][64];
335 /* noise reduction */
336 int (*dct_error_sum)[64];
338 uint16_t (*dct_offset)[64];
340 /* bit rate control */
342 int frame_bits; ///< bits used for the current frame
343 int stuffing_bits; ///< bits used for stuffing
344 int next_lambda; ///< next lambda used for retrying to encode a frame
345 RateControlContext rc_context; ///< contains stuff only accessed in ratecontrol.c
347 /* statistics, used for 2-pass encoding */
356 int misc_bits; ///< cbp, mb_type
357 int last_bits; ///< temp var used for calculating the above vars
359 /* error concealment / resync */
360 int resync_mb_x; ///< x position of last resync marker
361 int resync_mb_y; ///< y position of last resync marker
362 GetBitContext last_resync_gb; ///< used to search for the next resync marker
363 int mb_num_left; ///< number of MBs left in this video packet (for partitioned Slices only)
364 int next_p_frame_damaged; ///< set if the next p frame is damaged, to avoid showing trashed b frames
366 ParseContext parse_context;
370 int obmc; ///< overlapped block motion compensation
371 int mb_info; ///< interval for outputting info about mb offsets as side data
372 int prev_mb_info, last_mb_info;
373 uint8_t *mb_info_ptr;
378 /* H.263+ specific */
379 int umvplus; ///< == H263+ && unrestricted_mv
380 int h263_aic_dir; ///< AIC direction: 0 = left, 1 = top
381 int h263_slice_structured;
382 int alt_inter_vlc; ///< alternative inter vlc
388 ///< number of bits to represent the fractional part of time (encoder only)
389 int time_increment_bits;
391 int time_base; ///< time in seconds of last I,P,S Frame
392 int64_t time; ///< time of current frame
393 int64_t last_non_b_time;
394 uint16_t pp_time; ///< time distance between the last 2 p,s,i frames
395 uint16_t pb_time; ///< time distance between the last b and p,s,i frame
396 uint16_t pp_field_time;
397 uint16_t pb_field_time; ///< like above, just for interlaced
398 int real_sprite_warping_points;
399 int sprite_offset[2][2]; ///< sprite offset[isChroma][isMVY]
400 int sprite_delta[2][2]; ///< sprite_delta [isY][isMVY]
403 int quarter_sample; ///< 1->qpel, 0->half pel ME/MC
404 int aspect_ratio_info; //FIXME remove
405 int sprite_warping_accuracy;
406 int data_partitioning; ///< data partitioning flag from header
407 int partitioned_frame; ///< is current frame partitioned
408 int low_delay; ///< no reordering needed / has no b-frames
410 PutBitContext tex_pb; ///< used for data partitioned VOPs
411 PutBitContext pb2; ///< used for data partitioned VOPs
413 int padding_bug_score; ///< used to detect the VERY common padding bug in MPEG4
415 /* divx specific, used to workaround (many) bugs in divx5 */
417 uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
418 int bitstream_buffer_size;
419 unsigned int allocated_bitstream_buffer_size;
422 int rv10_version; ///< RV10 version: 0 or 3
423 int rv10_first_dc_coded[3];
426 struct MJpegContext *mjpeg_ctx;
429 /* MSMPEG4 specific */
432 int rl_chroma_table_index;
434 int use_skip_mb_code;
435 int slice_height; ///< in macroblocks
436 int first_slice_line; ///< used in mpeg4 too to handle resync markers
437 int flipflop_rounding;
438 int msmpeg4_version; ///< 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8
440 int esc3_level_length;
442 /** [mb_intra][isChroma][level][run][last] */
443 int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2];
444 int inter_intra_pred;
447 /* decompression specific */
451 int gop_picture_number; ///< index of the first picture of a GOP based on fake_pic_num & mpeg1 specific
452 int last_mv_dir; ///< last mv_dir, used for b frame encoding
453 uint8_t *vbv_delay_ptr; ///< pointer to vbv_delay in the bitstream
455 /* MPEG-2-specific - I wished not to have to support this mess. */
456 int progressive_sequence;
457 int mpeg_f_code[2][2];
459 // picture structure defines are loaded from mpegutils.h
460 int picture_structure;
462 int intra_dc_precision;
463 int frame_pred_frame_dct;
465 int concealment_motion_vectors;
467 int intra_vlc_format;
470 int repeat_first_field;
476 int chroma_x_shift;//depend on pix_format, that depend on chroma_format
479 int progressive_frame;
482 int first_field; ///< is 1 for the first field of a field picture 0 otherwise
483 int drop_frame_timecode; ///< timecode is in drop frame format.
484 int scan_offset; ///< reserve space for SVCD scan offset user data.
489 char *tc_opt_str; ///< timecode option string
490 AVTimecode tc; ///< timecode context
492 uint8_t *ptr_lastgob;
493 int swap_uv; //vcr2 codec is an MPEG-2 variant with U and V swapped
494 int pack_pblocks; //xvmc needs to keep blocks without gaps.
495 int16_t (*pblocks[12])[64];
497 int16_t (*block)[64]; ///< points to one of the following blocks
498 int16_t (*blocks)[12][64]; // for HQ mode we need to keep the best block
499 int (*decode_mb)(struct MpegEncContext *s, int16_t block[6][64]); // used by some codecs to avoid a switch()
501 #define SLICE_ERROR -1
502 #define SLICE_END -2 ///<end marker found
503 #define SLICE_NOEND -3 ///<no end marker or error found but mb count exceeded
505 void (*dct_unquantize_mpeg1_intra)(struct MpegEncContext *s,
506 int16_t *block/*align 16*/, int n, int qscale);
507 void (*dct_unquantize_mpeg1_inter)(struct MpegEncContext *s,
508 int16_t *block/*align 16*/, int n, int qscale);
509 void (*dct_unquantize_mpeg2_intra)(struct MpegEncContext *s,
510 int16_t *block/*align 16*/, int n, int qscale);
511 void (*dct_unquantize_mpeg2_inter)(struct MpegEncContext *s,
512 int16_t *block/*align 16*/, int n, int qscale);
513 void (*dct_unquantize_h263_intra)(struct MpegEncContext *s,
514 int16_t *block/*align 16*/, int n, int qscale);
515 void (*dct_unquantize_h263_inter)(struct MpegEncContext *s,
516 int16_t *block/*align 16*/, int n, int qscale);
517 void (*dct_unquantize_intra)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
518 int16_t *block/*align 16*/, int n, int qscale);
519 void (*dct_unquantize_inter)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
520 int16_t *block/*align 16*/, int n, int qscale);
521 int (*dct_quantize)(struct MpegEncContext *s, int16_t *block/*align 16*/, int n, int qscale, int *overflow);
522 int (*fast_dct_quantize)(struct MpegEncContext *s, int16_t *block/*align 16*/, int n, int qscale, int *overflow);
523 void (*denoise_dct)(struct MpegEncContext *s, int16_t *block);
525 int mpv_flags; ///< flags set by private options
526 int quantizer_noise_shaping;
529 * ratecontrol qmin qmax limiting method
530 * 0-> clipping, 1-> use a nice continuous function to limit qscale within qmin/qmax.
535 float rc_initial_cplx;
536 float rc_buffer_aggressivity;
537 float border_masking;
542 /* temp buffers for rate control */
543 float *cplx_tab, *bits_tab;
545 /* flag to indicate a reinitialization is required, e.g. after
546 * a frame size change */
553 /* temporary frames used by b_frame_strategy = 2 */
554 AVFrame *tmp_frames[MAX_B_FRAMES + 2];
557 /* mpegvideo_enc common options */
558 #define FF_MPV_FLAG_SKIP_RD 0x0001
559 #define FF_MPV_FLAG_STRICT_GOP 0x0002
560 #define FF_MPV_FLAG_QP_RD 0x0004
561 #define FF_MPV_FLAG_CBP_RD 0x0008
562 #define FF_MPV_FLAG_NAQ 0x0010
563 #define FF_MPV_FLAG_MV0 0x0020
565 #ifndef FF_MPV_OFFSET
566 #define FF_MPV_OFFSET(x) offsetof(MpegEncContext, x)
568 #define FF_MPV_OPT_FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
569 #define FF_MPV_COMMON_OPTS \
570 { "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" },\
571 { "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" },\
572 { "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" },\
573 { "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" },\
574 { "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" },\
575 { "naq", "normalize adaptive quantization", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_NAQ }, 0, 0, FF_MPV_OPT_FLAGS, "mpv_flags" },\
576 { "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" },\
577 { "luma_elim_threshold", "single coefficient elimination threshold for luminance (negative values also consider dc coefficient)",\
578 FF_MPV_OFFSET(luma_elim_threshold), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS },\
579 { "chroma_elim_threshold", "single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)",\
580 FF_MPV_OFFSET(chroma_elim_threshold), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS },\
581 { "quantizer_noise_shaping", NULL, FF_MPV_OFFSET(quantizer_noise_shaping), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FF_MPV_OPT_FLAGS },\
582 { "error_rate", "Simulate errors in the bitstream to test error concealment.", \
583 FF_MPV_OFFSET(error_rate), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FF_MPV_OPT_FLAGS },\
584 {"qsquish", "how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function)", \
585 FF_MPV_OFFSET(rc_qsquish), AV_OPT_TYPE_FLOAT, {.dbl = 0 }, 0, 99, FF_MPV_OPT_FLAGS}, \
586 {"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}, \
587 {"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}, \
588 {"rc_eq", "Set rate control equation. When computing the expression, besides the standard functions " \
589 "defined in the section 'Expression Evaluation', the following functions are available: " \
590 "bits2qp(bits), qp2bits(qp). Also the following constants are available: iTex pTex tex mv " \
591 "fCode iCount mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex avgTex.", \
592 FF_MPV_OFFSET(rc_eq), AV_OPT_TYPE_STRING, .flags = FF_MPV_OPT_FLAGS }, \
593 {"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}, \
594 {"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}, \
595 {"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}, \
596 {"lmin", "minimum Lagrange factor (VBR)", FF_MPV_OFFSET(lmin), AV_OPT_TYPE_INT, {.i64 = 2*FF_QP2LAMBDA }, 0, INT_MAX, FF_MPV_OPT_FLAGS }, \
597 {"lmax", "maximum Lagrange factor (VBR)", FF_MPV_OFFSET(lmax), AV_OPT_TYPE_INT, {.i64 = 31*FF_QP2LAMBDA }, 0, INT_MAX, FF_MPV_OPT_FLAGS }, \
598 {"ibias", "intra quant bias", FF_MPV_OFFSET(intra_quant_bias), AV_OPT_TYPE_INT, {.i64 = FF_DEFAULT_QUANT_BIAS }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
599 {"pbias", "inter quant bias", FF_MPV_OFFSET(inter_quant_bias), AV_OPT_TYPE_INT, {.i64 = FF_DEFAULT_QUANT_BIAS }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
600 {"rc_strategy", "ratecontrol method", FF_MPV_OFFSET(rc_strategy), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 1, FF_MPV_OPT_FLAGS }, \
602 extern const AVOption ff_mpv_generic_options[];
605 * Set the given MpegEncContext to common defaults (same for encoding
606 * and decoding). The changed fields will not depend upon the prior
607 * state of the MpegEncContext.
609 void ff_mpv_common_defaults(MpegEncContext *s);
611 void ff_dct_encode_init_x86(MpegEncContext *s);
613 int ff_mpv_common_init(MpegEncContext *s);
614 void ff_mpv_common_init_arm(MpegEncContext *s);
615 void ff_mpv_common_init_axp(MpegEncContext *s);
616 void ff_mpv_common_init_neon(MpegEncContext *s);
617 void ff_mpv_common_init_ppc(MpegEncContext *s);
618 void ff_mpv_common_init_x86(MpegEncContext *s);
619 void ff_mpv_common_init_mips(MpegEncContext *s);
621 int ff_mpv_common_frame_size_change(MpegEncContext *s);
622 void ff_mpv_common_end(MpegEncContext *s);
624 void ff_mpv_decode_defaults(MpegEncContext *s);
625 void ff_mpv_decode_init(MpegEncContext *s, AVCodecContext *avctx);
626 void ff_mpv_decode_mb(MpegEncContext *s, int16_t block[12][64]);
627 void ff_mpv_report_decode_progress(MpegEncContext *s);
629 int ff_mpv_frame_start(MpegEncContext *s, AVCodecContext *avctx);
630 void ff_mpv_frame_end(MpegEncContext *s);
632 int ff_mpv_encode_init(AVCodecContext *avctx);
633 void ff_mpv_encode_init_x86(MpegEncContext *s);
635 int ff_mpv_encode_end(AVCodecContext *avctx);
636 int ff_mpv_encode_picture(AVCodecContext *avctx, AVPacket *pkt,
637 const AVFrame *frame, int *got_packet);
638 int ff_mpv_reallocate_putbitbuffer(MpegEncContext *s, size_t threshold, size_t size_increase);
640 void ff_clean_intra_table_entries(MpegEncContext *s);
641 void ff_mpeg_draw_horiz_band(MpegEncContext *s, int y, int h);
642 void ff_mpeg_flush(AVCodecContext *avctx);
644 void ff_print_debug_info(MpegEncContext *s, Picture *p, AVFrame *pict);
645 void ff_print_debug_info2(AVCodecContext *avctx, AVFrame *pict, uint8_t *mbskip_table,
646 uint32_t *mbtype_table, int8_t *qscale_table, int16_t (*motion_val[2])[2],
648 int mb_width, int mb_height, int mb_stride, int quarter_sample);
650 int ff_mpv_export_qp_table(MpegEncContext *s, AVFrame *f, Picture *p, int qp_type);
652 void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix);
654 int ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src);
655 int ff_mpeg_update_thread_context(AVCodecContext *dst, const AVCodecContext *src);
656 void ff_set_qscale(MpegEncContext * s, int qscale);
658 void ff_mpv_idct_init(MpegEncContext *s);
659 int ff_dct_encode_init(MpegEncContext *s);
660 void ff_convert_matrix(MpegEncContext *s, int (*qmat)[64], uint16_t (*qmat16)[2][64],
661 const uint16_t *quant_matrix, int bias, int qmin, int qmax, int intra);
662 int ff_dct_quantize_c(MpegEncContext *s, int16_t *block, int n, int qscale, int *overflow);
664 void ff_init_block_index(MpegEncContext *s);
666 void ff_mpv_motion(MpegEncContext *s,
667 uint8_t *dest_y, uint8_t *dest_cb,
668 uint8_t *dest_cr, int dir,
669 uint8_t **ref_picture,
670 op_pixels_func (*pix_op)[4],
671 qpel_mc_func (*qpix_op)[16]);
673 static inline void ff_update_block_index(MpegEncContext *s){
674 const int block_size= 8 >> s->avctx->lowres;
676 s->block_index[0]+=2;
677 s->block_index[1]+=2;
678 s->block_index[2]+=2;
679 s->block_index[3]+=2;
682 s->dest[0]+= 2*block_size;
683 s->dest[1]+= block_size;
684 s->dest[2]+= block_size;
687 static inline int get_bits_diff(MpegEncContext *s){
688 const int bits= put_bits_count(&s->pb);
689 const int last= s->last_bits;
696 #endif /* AVCODEC_MPEGVIDEO_H */