2 * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
3 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 * H.264 / AVC / MPEG4 part10 codec.
25 * @author Michael Niedermayer <michaelni@gmx.at>
28 #ifndef AVCODEC_H264_H
29 #define AVCODEC_H264_H
31 #include "libavutil/intreadwrite.h"
33 #include "mpegvideo.h"
34 #include "h264chroma.h"
38 #include "rectangle.h"
40 #define interlaced_dct interlaced_dct_is_a_bad_name
41 #define mb_intra mb_intra_is_not_initialized_see_mb_type
43 #define MAX_SPS_COUNT 32
44 #define MAX_PPS_COUNT 256
46 #define MAX_MMCO_COUNT 66
48 #define MAX_DELAYED_PIC_COUNT 16
50 #define MAX_MBPAIR_SIZE (256*1024) // a tighter bound could be calculated if someone cares about a few bytes
52 /* Compiling in interlaced support reduces the speed
53 * of progressive decoding by about 2%. */
54 #define ALLOW_INTERLACE
59 * The maximum number of slices supported by the decoder.
60 * must be a power of 2
64 #ifdef ALLOW_INTERLACE
65 #define MB_MBAFF h->mb_mbaff
66 #define MB_FIELD h->mb_field_decoding_flag
67 #define FRAME_MBAFF h->mb_aff_frame
68 #define FIELD_PICTURE (s->picture_structure != PICT_FRAME)
77 #define FIELD_PICTURE 0
79 #define IS_INTERLACED(mb_type) 0
85 #define FIELD_OR_MBAFF_PICTURE (FRAME_MBAFF || FIELD_PICTURE)
88 #define CABAC h->pps.cabac
91 #define CHROMA (h->sps.chroma_format_idc)
92 #define CHROMA422 (h->sps.chroma_format_idc == 2)
93 #define CHROMA444 (h->sps.chroma_format_idc == 3)
95 #define EXTENDED_SAR 255
97 #define MB_TYPE_REF0 MB_TYPE_ACPRED // dirty but it fits in 16 bit
98 #define MB_TYPE_8x8DCT 0x01000000
99 #define IS_REF0(a) ((a) & MB_TYPE_REF0)
100 #define IS_8x8DCT(a) ((a) & MB_TYPE_8x8DCT)
102 #define QP_MAX_NUM (51 + 6*6) // The maximum supported qp
119 NAL_AUXILIARY_SLICE = 19,
120 NAL_FF_IGNORE = 0xff0f001,
127 SEI_BUFFERING_PERIOD = 0, ///< buffering period (H.264, D.1.1)
128 SEI_TYPE_PIC_TIMING = 1, ///< picture timing
129 SEI_TYPE_USER_DATA_ITU_T_T35 = 4, ///< user data registered by ITU-T Recommendation T.35
130 SEI_TYPE_USER_DATA_UNREGISTERED = 5, ///< unregistered user data
131 SEI_TYPE_RECOVERY_POINT = 6 ///< recovery point (frame # to decoder sync)
135 * pic_struct in picture timing SEI message
138 SEI_PIC_STRUCT_FRAME = 0, ///< 0: %frame
139 SEI_PIC_STRUCT_TOP_FIELD = 1, ///< 1: top field
140 SEI_PIC_STRUCT_BOTTOM_FIELD = 2, ///< 2: bottom field
141 SEI_PIC_STRUCT_TOP_BOTTOM = 3, ///< 3: top field, bottom field, in that order
142 SEI_PIC_STRUCT_BOTTOM_TOP = 4, ///< 4: bottom field, top field, in that order
143 SEI_PIC_STRUCT_TOP_BOTTOM_TOP = 5, ///< 5: top field, bottom field, top field repeated, in that order
144 SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM = 6, ///< 6: bottom field, top field, bottom field repeated, in that order
145 SEI_PIC_STRUCT_FRAME_DOUBLING = 7, ///< 7: %frame doubling
146 SEI_PIC_STRUCT_FRAME_TRIPLING = 8 ///< 8: %frame tripling
150 * Sequence parameter set
155 int chroma_format_idc;
156 int transform_bypass; ///< qpprime_y_zero_transform_bypass_flag
157 int log2_max_frame_num; ///< log2_max_frame_num_minus4 + 4
158 int poc_type; ///< pic_order_cnt_type
159 int log2_max_poc_lsb; ///< log2_max_pic_order_cnt_lsb_minus4
160 int delta_pic_order_always_zero_flag;
161 int offset_for_non_ref_pic;
162 int offset_for_top_to_bottom_field;
163 int poc_cycle_length; ///< num_ref_frames_in_pic_order_cnt_cycle
164 int ref_frame_count; ///< num_ref_frames
165 int gaps_in_frame_num_allowed_flag;
166 int mb_width; ///< pic_width_in_mbs_minus1 + 1
167 int mb_height; ///< pic_height_in_map_units_minus1 + 1
168 int frame_mbs_only_flag;
169 int mb_aff; ///< mb_adaptive_frame_field_flag
170 int direct_8x8_inference_flag;
171 int crop; ///< frame_cropping_flag
172 unsigned int crop_left; ///< frame_cropping_rect_left_offset
173 unsigned int crop_right; ///< frame_cropping_rect_right_offset
174 unsigned int crop_top; ///< frame_cropping_rect_top_offset
175 unsigned int crop_bottom; ///< frame_cropping_rect_bottom_offset
176 int vui_parameters_present_flag;
178 int video_signal_type_present_flag;
180 int colour_description_present_flag;
181 enum AVColorPrimaries color_primaries;
182 enum AVColorTransferCharacteristic color_trc;
183 enum AVColorSpace colorspace;
184 int timing_info_present_flag;
185 uint32_t num_units_in_tick;
187 int fixed_frame_rate_flag;
188 short offset_for_ref_frame[256]; // FIXME dyn aloc?
189 int bitstream_restriction_flag;
190 int num_reorder_frames;
191 int scaling_matrix_present;
192 uint8_t scaling_matrix4[6][16];
193 uint8_t scaling_matrix8[6][64];
194 int nal_hrd_parameters_present_flag;
195 int vcl_hrd_parameters_present_flag;
196 int pic_struct_present_flag;
197 int time_offset_length;
198 int cpb_cnt; ///< See H.264 E.1.2
199 int initial_cpb_removal_delay_length; ///< initial_cpb_removal_delay_length_minus1 + 1
200 int cpb_removal_delay_length; ///< cpb_removal_delay_length_minus1 + 1
201 int dpb_output_delay_length; ///< dpb_output_delay_length_minus1 + 1
202 int bit_depth_luma; ///< bit_depth_luma_minus8 + 8
203 int bit_depth_chroma; ///< bit_depth_chroma_minus8 + 8
204 int residual_color_transform_flag; ///< residual_colour_transform_flag
205 int constraint_set_flags; ///< constraint_set[0-3]_flag
206 int new; ///< flag to keep track if the decoder context needs re-init due to changed SPS
210 * Picture parameter set
214 int cabac; ///< entropy_coding_mode_flag
215 int pic_order_present; ///< pic_order_present_flag
216 int slice_group_count; ///< num_slice_groups_minus1 + 1
217 int mb_slice_group_map_type;
218 unsigned int ref_count[2]; ///< num_ref_idx_l0/1_active_minus1 + 1
219 int weighted_pred; ///< weighted_pred_flag
220 int weighted_bipred_idc;
221 int init_qp; ///< pic_init_qp_minus26 + 26
222 int init_qs; ///< pic_init_qs_minus26 + 26
223 int chroma_qp_index_offset[2];
224 int deblocking_filter_parameters_present; ///< deblocking_filter_parameters_present_flag
225 int constrained_intra_pred; ///< constrained_intra_pred_flag
226 int redundant_pic_cnt_present; ///< redundant_pic_cnt_present_flag
227 int transform_8x8_mode; ///< transform_8x8_mode_flag
228 uint8_t scaling_matrix4[6][16];
229 uint8_t scaling_matrix8[6][64];
230 uint8_t chroma_qp_table[2][QP_MAX_NUM+1]; ///< pre-scaled (with chroma_qp_index_offset) version of qp_table
235 * Memory management control operation opcode.
237 typedef enum MMCOOpcode {
248 * Memory management control operation.
250 typedef struct MMCO {
252 int short_pic_num; ///< pic_num without wrapping (pic_num & max_pic_num)
253 int long_arg; ///< index, pic_num, or num long refs depending on opcode
259 typedef struct H264Context {
261 H264DSPContext h264dsp;
262 H264ChromaContext h264chroma;
263 H264QpelContext h264qpel;
264 int pixel_shift; ///< 0 for 8-bit H264, 1 for high-bit-depth H264
265 int chroma_qp[2]; // QPc
267 int qp_thresh; ///< QP threshold to skip loopfilter
273 int chroma_pred_mode;
274 int intra16x16_pred_mode;
279 int left_mb_xy[LEFT_MBS];
284 int left_type[LEFT_MBS];
286 const uint8_t *left_block;
287 int topleft_partition;
289 int8_t intra4x4_pred_mode_cache[5 * 8];
290 int8_t(*intra4x4_pred_mode);
292 unsigned int topleft_samples_available;
293 unsigned int top_samples_available;
294 unsigned int topright_samples_available;
295 unsigned int left_samples_available;
296 uint8_t (*top_borders[2])[(16 * 3) * 2];
299 * non zero coeff count cache.
300 * is 64 if not available.
302 DECLARE_ALIGNED(8, uint8_t, non_zero_count_cache)[15 * 8];
304 uint8_t (*non_zero_count)[48];
307 * Motion vector cache.
309 DECLARE_ALIGNED(16, int16_t, mv_cache)[2][5 * 8][2];
310 DECLARE_ALIGNED(8, int8_t, ref_cache)[2][5 * 8];
311 #define LIST_NOT_USED -1 // FIXME rename?
312 #define PART_NOT_AVAILABLE -2
315 * number of neighbors (top and/or left) that used 8x8 dct
317 int neighbor_transform_size;
320 * block_offset[ 0..23] for frame macroblocks
321 * block_offset[24..47] for field macroblocks
323 int block_offset[2 * (16 * 3)];
325 uint32_t *mb2b_xy; // FIXME are these 4 a good idea?
327 int b_stride; // FIXME use s->b4_stride
329 int mb_linesize; ///< may be equal to s->linesize or s->linesize * 2, for mbaff
335 unsigned current_sps_id; ///< id of the current SPS
336 SPS sps; ///< current sps
341 PPS pps; // FIXME move to Picture perhaps? (->no) do we need that?
343 uint32_t dequant4_buffer[6][QP_MAX_NUM + 1][16]; // FIXME should these be moved down?
344 uint32_t dequant8_buffer[6][QP_MAX_NUM + 1][64];
345 uint32_t(*dequant4_coeff[6])[16];
346 uint32_t(*dequant8_coeff[6])[64];
349 uint16_t *slice_table; ///< slice_table_base + 2*mb_stride + 1
351 int slice_type_nos; ///< S free slice type (SI/SP are remapped to I/P)
352 int slice_type_fixed;
354 // interlacing specific flags
356 int mb_field_decoding_flag;
357 int mb_mbaff; ///< mb_aff_frame && mb_field_decoding_flag
359 DECLARE_ALIGNED(8, uint16_t, sub_mb_type)[4];
361 // Weighted pred stuff
363 int use_weight_chroma;
364 int luma_log2_weight_denom;
365 int chroma_log2_weight_denom;
366 // The following 2 can be changed to int8_t but that causes 10cpu cycles speedloss
367 int luma_weight[48][2][2];
368 int chroma_weight[48][2][2][2];
369 int implicit_weight[48][48][2];
371 int direct_spatial_mv_pred;
374 int dist_scale_factor[32];
375 int dist_scale_factor_field[2][32];
376 int map_col_to_list0[2][16 + 32];
377 int map_col_to_list0_field[2][2][16 + 32];
380 * num_ref_idx_l0/1_active_minus1 + 1
382 unsigned int ref_count[2]; ///< counts frames or fields, depending on current mb mode
383 unsigned int list_count;
384 uint8_t *list_counts; ///< Array of list_count per MB specifying the slice type
385 Picture ref_list[2][48]; /**< 0..15: frame refs, 16..47: mbaff field refs.
386 * Reordered version of default_ref_list
387 * according to picture reordering in slice header */
388 int ref2frm[MAX_SLICES][2][64]; ///< reference to frame number lists, used in the loop filter, the first 2 are for -2,-1
391 GetBitContext intra_gb;
392 GetBitContext inter_gb;
393 GetBitContext *intra_gb_ptr;
394 GetBitContext *inter_gb_ptr;
396 DECLARE_ALIGNED(16, int16_t, mb)[16 * 48 * 2]; ///< as a dct coeffecient is int32_t in high depth, we need to reserve twice the space.
397 DECLARE_ALIGNED(16, int16_t, mb_luma_dc)[3][16 * 2];
398 int16_t mb_padding[256 * 2]; ///< as mb is addressed by scantable[i] and scantable is uint8_t we can either check that i is not too large or ensure that there is some unused stuff after mb
404 uint8_t cabac_state[1024];
406 /* 0x100 -> non null luma_dc, 0x80/0x40 -> non null chroma_dc (cb/cr), 0x?0 -> chroma_cbp(0, 1, 2), 0x0? luma_cbp */
411 /* chroma_pred_mode for i4x4 or i16x16, else 0 */
412 uint8_t *chroma_pred_mode_table;
413 int last_qscale_diff;
414 uint8_t (*mvd_table[2])[2];
415 DECLARE_ALIGNED(16, uint8_t, mvd_cache)[2][5 * 8][2];
416 uint8_t *direct_table;
417 uint8_t direct_cache[5 * 8];
419 uint8_t zigzag_scan[16];
420 uint8_t zigzag_scan8x8[64];
421 uint8_t zigzag_scan8x8_cavlc[64];
422 uint8_t field_scan[16];
423 uint8_t field_scan8x8[64];
424 uint8_t field_scan8x8_cavlc[64];
425 uint8_t zigzag_scan_q0[16];
426 uint8_t zigzag_scan8x8_q0[64];
427 uint8_t zigzag_scan8x8_cavlc_q0[64];
428 uint8_t field_scan_q0[16];
429 uint8_t field_scan8x8_q0[64];
430 uint8_t field_scan8x8_cavlc_q0[64];
439 int deblocking_filter; ///< disable_deblocking_filter_idc with 1 <-> 0
440 int slice_alpha_c0_offset;
441 int slice_beta_offset;
443 // =============================================================
444 // Things below are not used in the MB or more inner code
448 uint8_t *rbsp_buffer[2];
449 unsigned int rbsp_buffer_size[2];
452 * Used to parse AVC variant of h264
454 int is_avc; ///< this flag is != 0 if codec is avc1
455 int nal_length_size; ///< Number of bytes used for nal length (1, 2 or 4)
456 int got_first; ///< this flag is != 0 if we've parsed a frame
458 int context_reinitialized;
460 SPS *sps_buffers[MAX_SPS_COUNT];
461 PPS *pps_buffers[MAX_PPS_COUNT];
463 int dequant_coeff_pps; ///< reinit tables when pps changes
465 uint16_t *slice_table_base;
470 int delta_poc_bottom;
473 int prev_poc_msb; ///< poc_msb of the last reference pic for POC type 0
474 int prev_poc_lsb; ///< poc_lsb of the last reference pic for POC type 0
475 int frame_num_offset; ///< for POC type 2
476 int prev_frame_num_offset; ///< for POC type 2
477 int prev_frame_num; ///< frame_num of the last pic for POC type 1/2
480 * frame_num for frames or 2 * frame_num + 1 for field pics.
485 * max_frame_num or 2 * max_frame_num for field pics.
489 int redundant_pic_count;
491 Picture default_ref_list[2][32]; ///< base reference list for all slices of a coded picture
492 Picture *short_ref[32];
493 Picture *long_ref[32];
494 Picture *delayed_pic[MAX_DELAYED_PIC_COUNT + 2]; // FIXME size?
495 int last_pocs[MAX_DELAYED_PIC_COUNT];
496 Picture *next_output_pic;
498 int next_outputed_poc;
501 * memory management control operations buffer.
503 MMCO mmco[MAX_MMCO_COUNT];
507 int long_ref_count; ///< number of actual long term references
508 int short_ref_count; ///< number of actual short term references
513 * @name Members for slice based multithreading
516 struct H264Context *thread_context[MAX_THREADS];
519 * current slice number, used to initialize slice_num of each thread/context
524 * Max number of threads / contexts.
525 * This is equal to AVCodecContext.thread_count unless
526 * multithreaded decoding is impossible, in which case it is
532 * 1 if the single thread fallback warning has already been
533 * displayed, 0 otherwise.
535 int single_decode_warning;
541 * pic_struct in picture timing SEI message
543 SEI_PicStructType sei_pic_struct;
546 * Complement sei_pic_struct
547 * SEI_PIC_STRUCT_TOP_BOTTOM and SEI_PIC_STRUCT_BOTTOM_TOP indicate interlaced frames.
548 * However, soft telecined frames may have these values.
549 * This is used in an attempt to flag soft telecine progressive.
551 int prev_interlaced_frame;
554 * Bit set of clock types for fields/frames in picture timing SEI message.
555 * For each found ct_type, appropriate bit is set (e.g., bit 1 for
561 * dpb_output_delay in picture timing SEI message, see H.264 C.2.2
563 int sei_dpb_output_delay;
566 * cpb_removal_delay in picture timing SEI message, see H.264 C.1.2
568 int sei_cpb_removal_delay;
571 * recovery_frame_cnt from SEI message
573 * Set to -1 if no recovery point SEI message found or to number of frames
574 * before playback synchronizes. Frames having recovery point are key
577 int sei_recovery_frame_cnt;
579 * recovery_frame is the frame_num at which the next frame should
580 * be fully constructed.
582 * Set to -1 when not expecting a recovery point.
587 * Are the SEI recovery points looking valid.
589 int valid_recovery_point;
591 int luma_weight_flag[2]; ///< 7.4.3.2 luma_weight_lX_flag
592 int chroma_weight_flag[2]; ///< 7.4.3.2 chroma_weight_lX_flag
595 int sei_buffering_period_present; ///< Buffering period SEI flag
596 int initial_cpb_removal_delay[32]; ///< Initial timestamps for CPBs
598 int cur_chroma_format_idc;
599 uint8_t *bipred_scratchpad;
601 int16_t slice_row[MAX_SLICES]; ///< to detect when MAX_SLICES is too low
603 int sync; ///< did we had a keyframe or recovery point
605 uint8_t parse_history[4];
606 int parse_history_count;
610 extern const uint8_t ff_h264_chroma_qp[7][QP_MAX_NUM + 1]; ///< One chroma qp table for each possible bit depth (8-14).
611 extern const uint16_t ff_h264_mb_sizes[4];
616 int ff_h264_decode_sei(H264Context *h);
621 int ff_h264_decode_seq_parameter_set(H264Context *h);
624 * compute profile from sps
626 int ff_h264_get_profile(SPS *sps);
631 int ff_h264_decode_picture_parameter_set(H264Context *h, int bit_length);
634 * Decode a network abstraction layer unit.
635 * @param consumed is the number of bytes used as input
636 * @param length is the length of the array
637 * @param dst_length is the number of decoded bytes FIXME here
638 * or a decode rbsp tailing?
639 * @return decoded bytes, might be src+1 if no escapes
641 const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src,
642 int *dst_length, int *consumed, int length);
645 * Free any data that may have been allocated in the H264 context
648 av_cold void ff_h264_free_context(H264Context *h);
651 * Reconstruct bitstream slice_type.
653 int ff_h264_get_slice_type(const H264Context *h);
659 int ff_h264_alloc_tables(H264Context *h);
662 * Fill the default_ref_list.
664 int ff_h264_fill_default_ref_list(H264Context *h);
666 int ff_h264_decode_ref_pic_list_reordering(H264Context *h);
667 void ff_h264_fill_mbaff_ref_list(H264Context *h);
668 void ff_h264_remove_all_refs(H264Context *h);
671 * Execute the reference picture marking (memory management control operations).
673 int ff_h264_execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count);
675 int ff_h264_decode_ref_pic_marking(H264Context *h, GetBitContext *gb,
678 int ff_generate_sliding_window_mmcos(H264Context *h, int first_slice);
681 * Check if the top & left blocks are available if needed & change the
682 * dc mode so it only uses the available blocks.
684 int ff_h264_check_intra4x4_pred_mode(H264Context *h);
687 * Check if the top & left blocks are available if needed & change the
688 * dc mode so it only uses the available blocks.
690 int ff_h264_check_intra_pred_mode(H264Context *h, int mode, int is_chroma);
692 void ff_h264_hl_decode_mb(H264Context *h);
693 int ff_h264_frame_start(H264Context *h);
694 int ff_h264_decode_extradata(H264Context *h, const uint8_t *buf, int size);
695 av_cold int ff_h264_decode_init(AVCodecContext *avctx);
696 av_cold void ff_h264_decode_init_vlc(void);
699 * Decode a macroblock
700 * @return 0 if OK, ER_AC_ERROR / ER_DC_ERROR / ER_MV_ERROR on error
702 int ff_h264_decode_mb_cavlc(H264Context *h);
705 * Decode a CABAC coded macroblock
706 * @return 0 if OK, ER_AC_ERROR / ER_DC_ERROR / ER_MV_ERROR on error
708 int ff_h264_decode_mb_cabac(H264Context *h);
710 void ff_h264_init_cabac_states(H264Context *h);
712 void ff_h264_direct_dist_scale_factor(H264Context *const h);
713 void ff_h264_direct_ref_list_init(H264Context *const h);
714 void ff_h264_pred_direct_motion(H264Context *const h, int *mb_type);
716 void ff_h264_filter_mb_fast(H264Context *h, int mb_x, int mb_y,
717 uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr,
718 unsigned int linesize, unsigned int uvlinesize);
719 void ff_h264_filter_mb(H264Context *h, int mb_x, int mb_y,
720 uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr,
721 unsigned int linesize, unsigned int uvlinesize);
724 * Reset SEI values at the beginning of the frame.
726 * @param h H.264 context.
728 void ff_h264_reset_sei(H264Context *h);
740 /* Scan8 organization:
757 * DY/DU/DV are for luma/chroma DC.
760 #define LUMA_DC_BLOCK_INDEX 48
761 #define CHROMA_DC_BLOCK_INDEX 49
763 // This table must be here because scan8[constant] must be known at compiletime
764 static const uint8_t scan8[16 * 3 + 3] = {
765 4 + 1 * 8, 5 + 1 * 8, 4 + 2 * 8, 5 + 2 * 8,
766 6 + 1 * 8, 7 + 1 * 8, 6 + 2 * 8, 7 + 2 * 8,
767 4 + 3 * 8, 5 + 3 * 8, 4 + 4 * 8, 5 + 4 * 8,
768 6 + 3 * 8, 7 + 3 * 8, 6 + 4 * 8, 7 + 4 * 8,
769 4 + 6 * 8, 5 + 6 * 8, 4 + 7 * 8, 5 + 7 * 8,
770 6 + 6 * 8, 7 + 6 * 8, 6 + 7 * 8, 7 + 7 * 8,
771 4 + 8 * 8, 5 + 8 * 8, 4 + 9 * 8, 5 + 9 * 8,
772 6 + 8 * 8, 7 + 8 * 8, 6 + 9 * 8, 7 + 9 * 8,
773 4 + 11 * 8, 5 + 11 * 8, 4 + 12 * 8, 5 + 12 * 8,
774 6 + 11 * 8, 7 + 11 * 8, 6 + 12 * 8, 7 + 12 * 8,
775 4 + 13 * 8, 5 + 13 * 8, 4 + 14 * 8, 5 + 14 * 8,
776 6 + 13 * 8, 7 + 13 * 8, 6 + 14 * 8, 7 + 14 * 8,
777 0 + 0 * 8, 0 + 5 * 8, 0 + 10 * 8
780 static av_always_inline uint32_t pack16to32(int a, int b)
783 return (b & 0xFFFF) + (a << 16);
785 return (a & 0xFFFF) + (b << 16);
789 static av_always_inline uint16_t pack8to16(int a, int b)
792 return (b & 0xFF) + (a << 8);
794 return (a & 0xFF) + (b << 8);
801 static av_always_inline int get_chroma_qp(H264Context *h, int t, int qscale)
803 return h->pps.chroma_qp_table[t][qscale];
807 * Get the predicted intra4x4 prediction mode.
809 static av_always_inline int pred_intra_mode(H264Context *h, int n)
811 const int index8 = scan8[n];
812 const int left = h->intra4x4_pred_mode_cache[index8 - 1];
813 const int top = h->intra4x4_pred_mode_cache[index8 - 8];
814 const int min = FFMIN(left, top);
816 tprintf(h->s.avctx, "mode:%d %d min:%d\n", left, top, min);
824 static av_always_inline void write_back_intra_pred_mode(H264Context *h)
826 int8_t *i4x4 = h->intra4x4_pred_mode + h->mb2br_xy[h->mb_xy];
827 int8_t *i4x4_cache = h->intra4x4_pred_mode_cache;
829 AV_COPY32(i4x4, i4x4_cache + 4 + 8 * 4);
830 i4x4[4] = i4x4_cache[7 + 8 * 3];
831 i4x4[5] = i4x4_cache[7 + 8 * 2];
832 i4x4[6] = i4x4_cache[7 + 8 * 1];
835 static av_always_inline void write_back_non_zero_count(H264Context *h)
837 const int mb_xy = h->mb_xy;
838 uint8_t *nnz = h->non_zero_count[mb_xy];
839 uint8_t *nnz_cache = h->non_zero_count_cache;
841 AV_COPY32(&nnz[ 0], &nnz_cache[4 + 8 * 1]);
842 AV_COPY32(&nnz[ 4], &nnz_cache[4 + 8 * 2]);
843 AV_COPY32(&nnz[ 8], &nnz_cache[4 + 8 * 3]);
844 AV_COPY32(&nnz[12], &nnz_cache[4 + 8 * 4]);
845 AV_COPY32(&nnz[16], &nnz_cache[4 + 8 * 6]);
846 AV_COPY32(&nnz[20], &nnz_cache[4 + 8 * 7]);
847 AV_COPY32(&nnz[32], &nnz_cache[4 + 8 * 11]);
848 AV_COPY32(&nnz[36], &nnz_cache[4 + 8 * 12]);
850 if (!h->s.chroma_y_shift) {
851 AV_COPY32(&nnz[24], &nnz_cache[4 + 8 * 8]);
852 AV_COPY32(&nnz[28], &nnz_cache[4 + 8 * 9]);
853 AV_COPY32(&nnz[40], &nnz_cache[4 + 8 * 13]);
854 AV_COPY32(&nnz[44], &nnz_cache[4 + 8 * 14]);
858 static av_always_inline void write_back_motion_list(H264Context *h,
859 MpegEncContext *const s,
862 int mb_type, int list)
864 int16_t(*mv_dst)[2] = &s->current_picture.f.motion_val[list][b_xy];
865 int16_t(*mv_src)[2] = &h->mv_cache[list][scan8[0]];
866 AV_COPY128(mv_dst + 0 * b_stride, mv_src + 8 * 0);
867 AV_COPY128(mv_dst + 1 * b_stride, mv_src + 8 * 1);
868 AV_COPY128(mv_dst + 2 * b_stride, mv_src + 8 * 2);
869 AV_COPY128(mv_dst + 3 * b_stride, mv_src + 8 * 3);
871 uint8_t (*mvd_dst)[2] = &h->mvd_table[list][FMO ? 8 * h->mb_xy
872 : h->mb2br_xy[h->mb_xy]];
873 uint8_t(*mvd_src)[2] = &h->mvd_cache[list][scan8[0]];
874 if (IS_SKIP(mb_type)) {
877 AV_COPY64(mvd_dst, mvd_src + 8 * 3);
878 AV_COPY16(mvd_dst + 3 + 3, mvd_src + 3 + 8 * 0);
879 AV_COPY16(mvd_dst + 3 + 2, mvd_src + 3 + 8 * 1);
880 AV_COPY16(mvd_dst + 3 + 1, mvd_src + 3 + 8 * 2);
885 int8_t *ref_index = &s->current_picture.f.ref_index[list][b8_xy];
886 int8_t *ref_cache = h->ref_cache[list];
887 ref_index[0 + 0 * 2] = ref_cache[scan8[0]];
888 ref_index[1 + 0 * 2] = ref_cache[scan8[4]];
889 ref_index[0 + 1 * 2] = ref_cache[scan8[8]];
890 ref_index[1 + 1 * 2] = ref_cache[scan8[12]];
894 static av_always_inline void write_back_motion(H264Context *h, int mb_type)
896 MpegEncContext *const s = &h->s;
897 const int b_stride = h->b_stride;
898 const int b_xy = 4 * s->mb_x + 4 * s->mb_y * h->b_stride; // try mb2b(8)_xy
899 const int b8_xy = 4 * h->mb_xy;
901 if (USES_LIST(mb_type, 0)) {
902 write_back_motion_list(h, s, b_stride, b_xy, b8_xy, mb_type, 0);
904 fill_rectangle(&s->current_picture.f.ref_index[0][b8_xy],
905 2, 2, 2, (uint8_t)LIST_NOT_USED, 1);
907 if (USES_LIST(mb_type, 1))
908 write_back_motion_list(h, s, b_stride, b_xy, b8_xy, mb_type, 1);
910 if (h->slice_type_nos == AV_PICTURE_TYPE_B && CABAC) {
911 if (IS_8X8(mb_type)) {
912 uint8_t *direct_table = &h->direct_table[4 * h->mb_xy];
913 direct_table[1] = h->sub_mb_type[1] >> 1;
914 direct_table[2] = h->sub_mb_type[2] >> 1;
915 direct_table[3] = h->sub_mb_type[3] >> 1;
920 static av_always_inline int get_dct8x8_allowed(H264Context *h)
922 if (h->sps.direct_8x8_inference_flag)
923 return !(AV_RN64A(h->sub_mb_type) &
924 ((MB_TYPE_16x8 | MB_TYPE_8x16 | MB_TYPE_8x8) *
925 0x0001000100010001ULL));
927 return !(AV_RN64A(h->sub_mb_type) &
928 ((MB_TYPE_16x8 | MB_TYPE_8x16 | MB_TYPE_8x8 | MB_TYPE_DIRECT2) *
929 0x0001000100010001ULL));
932 #endif /* AVCODEC_H264_H */