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 Libav.
7 * Libav 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 * Libav 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 Libav; 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 "error_resilience.h"
35 #include "mpegvideo.h"
36 #include "h264chroma.h"
40 #include "rectangle.h"
42 #define MAX_SPS_COUNT 32
43 #define MAX_PPS_COUNT 256
45 #define MAX_MMCO_COUNT 66
47 #define MAX_DELAYED_PIC_COUNT 16
49 /* Compiling in interlaced support reduces the speed
50 * of progressive decoding by about 2%. */
51 #define ALLOW_INTERLACE
56 * The maximum number of slices supported by the decoder.
57 * must be a power of 2
61 #ifdef ALLOW_INTERLACE
62 #define MB_MBAFF(h) h->mb_mbaff
63 #define MB_FIELD(h) h->mb_field_decoding_flag
64 #define FRAME_MBAFF(h) h->mb_aff_frame
65 #define FIELD_PICTURE(h) (h->picture_structure != PICT_FRAME)
73 #define FRAME_MBAFF(h) 0
74 #define FIELD_PICTURE(h) 0
76 #define IS_INTERLACED(mb_type) 0
82 #define FIELD_OR_MBAFF_PICTURE(h) (FRAME_MBAFF(h) || FIELD_PICTURE(h))
85 #define CABAC(h) h->pps.cabac
88 #define CHROMA422(h) (h->sps.chroma_format_idc == 2)
89 #define CHROMA444(h) (h->sps.chroma_format_idc == 3)
91 #define EXTENDED_SAR 255
93 #define MB_TYPE_REF0 MB_TYPE_ACPRED // dirty but it fits in 16 bit
94 #define MB_TYPE_8x8DCT 0x01000000
95 #define IS_REF0(a) ((a) & MB_TYPE_REF0)
96 #define IS_8x8DCT(a) ((a) & MB_TYPE_8x8DCT)
98 #define QP_MAX_NUM (51 + 2 * 6) // The maximum supported qp
115 NAL_AUXILIARY_SLICE = 19,
116 NAL_FF_IGNORE = 0xff0f001,
123 SEI_BUFFERING_PERIOD = 0, ///< buffering period (H.264, D.1.1)
124 SEI_TYPE_PIC_TIMING = 1, ///< picture timing
125 SEI_TYPE_USER_DATA_UNREGISTERED = 5, ///< unregistered user data
126 SEI_TYPE_RECOVERY_POINT = 6 ///< recovery point (frame # to decoder sync)
130 * pic_struct in picture timing SEI message
133 SEI_PIC_STRUCT_FRAME = 0, ///< 0: %frame
134 SEI_PIC_STRUCT_TOP_FIELD = 1, ///< 1: top field
135 SEI_PIC_STRUCT_BOTTOM_FIELD = 2, ///< 2: bottom field
136 SEI_PIC_STRUCT_TOP_BOTTOM = 3, ///< 3: top field, bottom field, in that order
137 SEI_PIC_STRUCT_BOTTOM_TOP = 4, ///< 4: bottom field, top field, in that order
138 SEI_PIC_STRUCT_TOP_BOTTOM_TOP = 5, ///< 5: top field, bottom field, top field repeated, in that order
139 SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM = 6, ///< 6: bottom field, top field, bottom field repeated, in that order
140 SEI_PIC_STRUCT_FRAME_DOUBLING = 7, ///< 7: %frame doubling
141 SEI_PIC_STRUCT_FRAME_TRIPLING = 8 ///< 8: %frame tripling
145 * Sequence parameter set
150 int chroma_format_idc;
151 int transform_bypass; ///< qpprime_y_zero_transform_bypass_flag
152 int log2_max_frame_num; ///< log2_max_frame_num_minus4 + 4
153 int poc_type; ///< pic_order_cnt_type
154 int log2_max_poc_lsb; ///< log2_max_pic_order_cnt_lsb_minus4
155 int delta_pic_order_always_zero_flag;
156 int offset_for_non_ref_pic;
157 int offset_for_top_to_bottom_field;
158 int poc_cycle_length; ///< num_ref_frames_in_pic_order_cnt_cycle
159 int ref_frame_count; ///< num_ref_frames
160 int gaps_in_frame_num_allowed_flag;
161 int mb_width; ///< pic_width_in_mbs_minus1 + 1
162 int mb_height; ///< pic_height_in_map_units_minus1 + 1
163 int frame_mbs_only_flag;
164 int mb_aff; ///< mb_adaptive_frame_field_flag
165 int direct_8x8_inference_flag;
166 int crop; ///< frame_cropping_flag
168 /* those 4 are already in luma samples */
169 unsigned int crop_left; ///< frame_cropping_rect_left_offset
170 unsigned int crop_right; ///< frame_cropping_rect_right_offset
171 unsigned int crop_top; ///< frame_cropping_rect_top_offset
172 unsigned int crop_bottom; ///< frame_cropping_rect_bottom_offset
173 int vui_parameters_present_flag;
175 int video_signal_type_present_flag;
177 int colour_description_present_flag;
178 enum AVColorPrimaries color_primaries;
179 enum AVColorTransferCharacteristic color_trc;
180 enum AVColorSpace colorspace;
181 int timing_info_present_flag;
182 uint32_t num_units_in_tick;
184 int fixed_frame_rate_flag;
185 short offset_for_ref_frame[256]; // FIXME dyn aloc?
186 int bitstream_restriction_flag;
187 int num_reorder_frames;
188 int scaling_matrix_present;
189 uint8_t scaling_matrix4[6][16];
190 uint8_t scaling_matrix8[6][64];
191 int nal_hrd_parameters_present_flag;
192 int vcl_hrd_parameters_present_flag;
193 int pic_struct_present_flag;
194 int time_offset_length;
195 int cpb_cnt; ///< See H.264 E.1.2
196 int initial_cpb_removal_delay_length; ///< initial_cpb_removal_delay_length_minus1 + 1
197 int cpb_removal_delay_length; ///< cpb_removal_delay_length_minus1 + 1
198 int dpb_output_delay_length; ///< dpb_output_delay_length_minus1 + 1
199 int bit_depth_luma; ///< bit_depth_luma_minus8 + 8
200 int bit_depth_chroma; ///< bit_depth_chroma_minus8 + 8
201 int residual_color_transform_flag; ///< residual_colour_transform_flag
202 int constraint_set_flags; ///< constraint_set[0-3]_flag
203 int new; ///< flag to keep track if the decoder context needs re-init due to changed SPS
207 * Picture parameter set
211 int cabac; ///< entropy_coding_mode_flag
212 int pic_order_present; ///< pic_order_present_flag
213 int slice_group_count; ///< num_slice_groups_minus1 + 1
214 int mb_slice_group_map_type;
215 unsigned int ref_count[2]; ///< num_ref_idx_l0/1_active_minus1 + 1
216 int weighted_pred; ///< weighted_pred_flag
217 int weighted_bipred_idc;
218 int init_qp; ///< pic_init_qp_minus26 + 26
219 int init_qs; ///< pic_init_qs_minus26 + 26
220 int chroma_qp_index_offset[2];
221 int deblocking_filter_parameters_present; ///< deblocking_filter_parameters_present_flag
222 int constrained_intra_pred; ///< constrained_intra_pred_flag
223 int redundant_pic_cnt_present; ///< redundant_pic_cnt_present_flag
224 int transform_8x8_mode; ///< transform_8x8_mode_flag
225 uint8_t scaling_matrix4[6][16];
226 uint8_t scaling_matrix8[6][64];
227 uint8_t chroma_qp_table[2][64]; ///< pre-scaled (with chroma_qp_index_offset) version of qp_table
232 * Memory management control operation opcode.
234 typedef enum MMCOOpcode {
245 * Memory management control operation.
247 typedef struct MMCO {
249 int short_pic_num; ///< pic_num without wrapping (pic_num & max_pic_num)
250 int long_arg; ///< index, pic_num, or num long refs depending on opcode
256 typedef struct H264Context {
257 AVCodecContext *avctx;
259 VideoDSPContext vdsp;
260 H264DSPContext h264dsp;
261 H264ChromaContext h264chroma;
262 H264QpelContext h264qpel;
264 ParseContext parse_context;
269 Picture *cur_pic_ptr;
272 int pixel_shift; ///< 0 for 8-bit H264, 1 for high-bit-depth H264
273 int chroma_qp[2]; // QPc
275 int qp_thresh; ///< QP threshold to skip loopfilter
277 /* coded dimensions -- 16 * mb w/h */
279 int linesize, uvlinesize;
280 int chroma_x_shift, chroma_y_shift;
284 int data_partitioning;
285 int coded_picture_number;
288 int context_initialized;
296 int chroma_pred_mode;
297 int intra16x16_pred_mode;
302 int left_mb_xy[LEFT_MBS];
307 int left_type[LEFT_MBS];
309 const uint8_t *left_block;
310 int topleft_partition;
312 int8_t intra4x4_pred_mode_cache[5 * 8];
313 int8_t(*intra4x4_pred_mode);
315 unsigned int topleft_samples_available;
316 unsigned int top_samples_available;
317 unsigned int topright_samples_available;
318 unsigned int left_samples_available;
319 uint8_t (*top_borders[2])[(16 * 3) * 2];
322 * non zero coeff count cache.
323 * is 64 if not available.
325 DECLARE_ALIGNED(8, uint8_t, non_zero_count_cache)[15 * 8];
327 uint8_t (*non_zero_count)[48];
330 * Motion vector cache.
332 DECLARE_ALIGNED(16, int16_t, mv_cache)[2][5 * 8][2];
333 DECLARE_ALIGNED(8, int8_t, ref_cache)[2][5 * 8];
334 #define LIST_NOT_USED -1 // FIXME rename?
335 #define PART_NOT_AVAILABLE -2
338 * number of neighbors (top and/or left) that used 8x8 dct
340 int neighbor_transform_size;
343 * block_offset[ 0..23] for frame macroblocks
344 * block_offset[24..47] for field macroblocks
346 int block_offset[2 * (16 * 3)];
348 uint32_t *mb2b_xy; // FIXME are these 4 a good idea?
350 int b_stride; // FIXME use s->b4_stride
352 int mb_linesize; ///< may be equal to s->linesize or s->linesize * 2, for mbaff
355 unsigned current_sps_id; ///< id of the current SPS
356 SPS sps; ///< current sps
361 PPS pps; // FIXME move to Picture perhaps? (->no) do we need that?
363 uint32_t dequant4_buffer[6][QP_MAX_NUM + 1][16]; // FIXME should these be moved down?
364 uint32_t dequant8_buffer[6][QP_MAX_NUM + 1][64];
365 uint32_t(*dequant4_coeff[6])[16];
366 uint32_t(*dequant8_coeff[6])[64];
369 uint16_t *slice_table; ///< slice_table_base + 2*mb_stride + 1
371 int slice_type_nos; ///< S free slice type (SI/SP are remapped to I/P)
372 int slice_type_fixed;
374 // interlacing specific flags
376 int mb_field_decoding_flag;
377 int mb_mbaff; ///< mb_aff_frame && mb_field_decoding_flag
378 int picture_structure;
381 DECLARE_ALIGNED(8, uint16_t, sub_mb_type)[4];
383 // Weighted pred stuff
385 int use_weight_chroma;
386 int luma_log2_weight_denom;
387 int chroma_log2_weight_denom;
388 // The following 2 can be changed to int8_t but that causes 10cpu cycles speedloss
389 int luma_weight[48][2][2];
390 int chroma_weight[48][2][2][2];
391 int implicit_weight[48][48][2];
393 int direct_spatial_mv_pred;
396 int dist_scale_factor[32];
397 int dist_scale_factor_field[2][32];
398 int map_col_to_list0[2][16 + 32];
399 int map_col_to_list0_field[2][2][16 + 32];
402 * num_ref_idx_l0/1_active_minus1 + 1
404 unsigned int ref_count[2]; ///< counts frames or fields, depending on current mb mode
405 unsigned int list_count;
406 uint8_t *list_counts; ///< Array of list_count per MB specifying the slice type
407 Picture ref_list[2][48]; /**< 0..15: frame refs, 16..47: mbaff field refs.
408 * Reordered version of default_ref_list
409 * according to picture reordering in slice header */
410 int ref2frm[MAX_SLICES][2][64]; ///< reference to frame number lists, used in the loop filter, the first 2 are for -2,-1
413 GetBitContext intra_gb;
414 GetBitContext inter_gb;
415 GetBitContext *intra_gb_ptr;
416 GetBitContext *inter_gb_ptr;
418 const uint8_t *intra_pcm_ptr;
419 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.
420 DECLARE_ALIGNED(16, int16_t, mb_luma_dc)[3][16 * 2];
421 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
427 uint8_t cabac_state[1024];
429 /* 0x100 -> non null luma_dc, 0x80/0x40 -> non null chroma_dc (cb/cr), 0x?0 -> chroma_cbp(0, 1, 2), 0x0? luma_cbp */
434 /* chroma_pred_mode for i4x4 or i16x16, else 0 */
435 uint8_t *chroma_pred_mode_table;
436 int last_qscale_diff;
437 uint8_t (*mvd_table[2])[2];
438 DECLARE_ALIGNED(16, uint8_t, mvd_cache)[2][5 * 8][2];
439 uint8_t *direct_table;
440 uint8_t direct_cache[5 * 8];
442 uint8_t zigzag_scan[16];
443 uint8_t zigzag_scan8x8[64];
444 uint8_t zigzag_scan8x8_cavlc[64];
445 uint8_t field_scan[16];
446 uint8_t field_scan8x8[64];
447 uint8_t field_scan8x8_cavlc[64];
448 const uint8_t *zigzag_scan_q0;
449 const uint8_t *zigzag_scan8x8_q0;
450 const uint8_t *zigzag_scan8x8_cavlc_q0;
451 const uint8_t *field_scan_q0;
452 const uint8_t *field_scan8x8_q0;
453 const uint8_t *field_scan8x8_cavlc_q0;
461 int mb_height, mb_width;
469 int deblocking_filter; ///< disable_deblocking_filter_idc with 1 <-> 0
470 int slice_alpha_c0_offset;
471 int slice_beta_offset;
473 // =============================================================
474 // Things below are not used in the MB or more inner code
478 uint8_t *rbsp_buffer[2];
479 unsigned int rbsp_buffer_size[2];
482 * Used to parse AVC variant of h264
484 int is_avc; ///< this flag is != 0 if codec is avc1
485 int nal_length_size; ///< Number of bytes used for nal length (1, 2 or 4)
486 int got_first; ///< this flag is != 0 if we've parsed a frame
488 int bit_depth_luma; ///< luma bit depth from sps to detect changes
489 int chroma_format_idc; ///< chroma format from sps to detect changes
491 SPS *sps_buffers[MAX_SPS_COUNT];
492 PPS *pps_buffers[MAX_PPS_COUNT];
494 int dequant_coeff_pps; ///< reinit tables when pps changes
496 uint16_t *slice_table_base;
501 int delta_poc_bottom;
504 int prev_poc_msb; ///< poc_msb of the last reference pic for POC type 0
505 int prev_poc_lsb; ///< poc_lsb of the last reference pic for POC type 0
506 int frame_num_offset; ///< for POC type 2
507 int prev_frame_num_offset; ///< for POC type 2
508 int prev_frame_num; ///< frame_num of the last pic for POC type 1/2
511 * frame_num for frames or 2 * frame_num + 1 for field pics.
516 * max_frame_num or 2 * max_frame_num for field pics.
520 int redundant_pic_count;
522 Picture default_ref_list[2][32]; ///< base reference list for all slices of a coded picture
523 Picture *short_ref[32];
524 Picture *long_ref[32];
525 Picture *delayed_pic[MAX_DELAYED_PIC_COUNT + 2]; // FIXME size?
526 int last_pocs[MAX_DELAYED_PIC_COUNT];
527 Picture *next_output_pic;
529 int next_outputed_poc;
532 * memory management control operations buffer.
534 MMCO mmco[MAX_MMCO_COUNT];
538 int long_ref_count; ///< number of actual long term references
539 int short_ref_count; ///< number of actual short term references
544 * @name Members for slice based multithreading
547 struct H264Context *thread_context[MAX_THREADS];
550 * current slice number, used to initalize slice_num of each thread/context
555 * Max number of threads / contexts.
556 * This is equal to AVCodecContext.thread_count unless
557 * multithreaded decoding is impossible, in which case it is
562 int slice_context_count;
565 * 1 if the single thread fallback warning has already been
566 * displayed, 0 otherwise.
568 int single_decode_warning;
570 enum AVPictureType pict_type;
576 * pic_struct in picture timing SEI message
578 SEI_PicStructType sei_pic_struct;
581 * Complement sei_pic_struct
582 * SEI_PIC_STRUCT_TOP_BOTTOM and SEI_PIC_STRUCT_BOTTOM_TOP indicate interlaced frames.
583 * However, soft telecined frames may have these values.
584 * This is used in an attempt to flag soft telecine progressive.
586 int prev_interlaced_frame;
589 * Bit set of clock types for fields/frames in picture timing SEI message.
590 * For each found ct_type, appropriate bit is set (e.g., bit 1 for
596 * dpb_output_delay in picture timing SEI message, see H.264 C.2.2
598 int sei_dpb_output_delay;
601 * cpb_removal_delay in picture timing SEI message, see H.264 C.1.2
603 int sei_cpb_removal_delay;
606 * recovery_frame_cnt from SEI message
608 * Set to -1 if no recovery point SEI message found or to number of frames
609 * before playback synchronizes. Frames having recovery point are key
612 int sei_recovery_frame_cnt;
614 int luma_weight_flag[2]; ///< 7.4.3.2 luma_weight_lX_flag
615 int chroma_weight_flag[2]; ///< 7.4.3.2 chroma_weight_lX_flag
618 int sei_buffering_period_present; ///< Buffering period SEI flag
619 int initial_cpb_removal_delay[32]; ///< Initial timestamps for CPBs
621 int cur_chroma_format_idc;
622 uint8_t *bipred_scratchpad;
623 uint8_t *edge_emu_buffer;
624 int16_t *dc_val_base;
626 AVBufferPool *qscale_table_pool;
627 AVBufferPool *mb_type_pool;
628 AVBufferPool *motion_val_pool;
629 AVBufferPool *ref_index_pool;
632 extern const uint8_t ff_h264_chroma_qp[3][QP_MAX_NUM + 1]; ///< One chroma qp table for each supported bit depth (8, 9, 10).
633 extern const uint16_t ff_h264_mb_sizes[4];
638 int ff_h264_decode_sei(H264Context *h);
643 int ff_h264_decode_seq_parameter_set(H264Context *h);
646 * compute profile from sps
648 int ff_h264_get_profile(SPS *sps);
653 int ff_h264_decode_picture_parameter_set(H264Context *h, int bit_length);
656 * Decode a network abstraction layer unit.
657 * @param consumed is the number of bytes used as input
658 * @param length is the length of the array
659 * @param dst_length is the number of decoded bytes FIXME here
660 * or a decode rbsp tailing?
661 * @return decoded bytes, might be src+1 if no escapes
663 const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src,
664 int *dst_length, int *consumed, int length);
667 * Free any data that may have been allocated in the H264 context
670 void ff_h264_free_context(H264Context *h);
673 * Reconstruct bitstream slice_type.
675 int ff_h264_get_slice_type(const H264Context *h);
681 int ff_h264_alloc_tables(H264Context *h);
684 * Fill the default_ref_list.
686 int ff_h264_fill_default_ref_list(H264Context *h);
688 int ff_h264_decode_ref_pic_list_reordering(H264Context *h);
689 void ff_h264_fill_mbaff_ref_list(H264Context *h);
690 void ff_h264_remove_all_refs(H264Context *h);
693 * Execute the reference picture marking (memory management control operations).
695 int ff_h264_execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count);
697 int ff_h264_decode_ref_pic_marking(H264Context *h, GetBitContext *gb,
700 int ff_generate_sliding_window_mmcos(H264Context *h, int first_slice);
703 * Check if the top & left blocks are available if needed & change the
704 * dc mode so it only uses the available blocks.
706 int ff_h264_check_intra4x4_pred_mode(H264Context *h);
709 * Check if the top & left blocks are available if needed & change the
710 * dc mode so it only uses the available blocks.
712 int ff_h264_check_intra_pred_mode(H264Context *h, int mode, int is_chroma);
714 void ff_h264_hl_decode_mb(H264Context *h);
715 int ff_h264_decode_extradata(H264Context *h);
716 int ff_h264_decode_init(AVCodecContext *avctx);
717 void ff_h264_decode_init_vlc(void);
720 * Decode a macroblock
721 * @return 0 if OK, ER_AC_ERROR / ER_DC_ERROR / ER_MV_ERROR on error
723 int ff_h264_decode_mb_cavlc(H264Context *h);
726 * Decode a CABAC coded macroblock
727 * @return 0 if OK, ER_AC_ERROR / ER_DC_ERROR / ER_MV_ERROR on error
729 int ff_h264_decode_mb_cabac(H264Context *h);
731 void ff_h264_init_cabac_states(H264Context *h);
733 void ff_h264_direct_dist_scale_factor(H264Context *const h);
734 void ff_h264_direct_ref_list_init(H264Context *const h);
735 void ff_h264_pred_direct_motion(H264Context *const h, int *mb_type);
737 void ff_h264_filter_mb_fast(H264Context *h, int mb_x, int mb_y,
738 uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr,
739 unsigned int linesize, unsigned int uvlinesize);
740 void ff_h264_filter_mb(H264Context *h, int mb_x, int mb_y,
741 uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr,
742 unsigned int linesize, unsigned int uvlinesize);
745 * Reset SEI values at the beginning of the frame.
747 * @param h H.264 context.
749 void ff_h264_reset_sei(H264Context *h);
761 /* Scan8 organization:
778 * DY/DU/DV are for luma/chroma DC.
781 #define LUMA_DC_BLOCK_INDEX 48
782 #define CHROMA_DC_BLOCK_INDEX 49
784 // This table must be here because scan8[constant] must be known at compiletime
785 static const uint8_t scan8[16 * 3 + 3] = {
786 4 + 1 * 8, 5 + 1 * 8, 4 + 2 * 8, 5 + 2 * 8,
787 6 + 1 * 8, 7 + 1 * 8, 6 + 2 * 8, 7 + 2 * 8,
788 4 + 3 * 8, 5 + 3 * 8, 4 + 4 * 8, 5 + 4 * 8,
789 6 + 3 * 8, 7 + 3 * 8, 6 + 4 * 8, 7 + 4 * 8,
790 4 + 6 * 8, 5 + 6 * 8, 4 + 7 * 8, 5 + 7 * 8,
791 6 + 6 * 8, 7 + 6 * 8, 6 + 7 * 8, 7 + 7 * 8,
792 4 + 8 * 8, 5 + 8 * 8, 4 + 9 * 8, 5 + 9 * 8,
793 6 + 8 * 8, 7 + 8 * 8, 6 + 9 * 8, 7 + 9 * 8,
794 4 + 11 * 8, 5 + 11 * 8, 4 + 12 * 8, 5 + 12 * 8,
795 6 + 11 * 8, 7 + 11 * 8, 6 + 12 * 8, 7 + 12 * 8,
796 4 + 13 * 8, 5 + 13 * 8, 4 + 14 * 8, 5 + 14 * 8,
797 6 + 13 * 8, 7 + 13 * 8, 6 + 14 * 8, 7 + 14 * 8,
798 0 + 0 * 8, 0 + 5 * 8, 0 + 10 * 8
801 static av_always_inline uint32_t pack16to32(int a, int b)
804 return (b & 0xFFFF) + (a << 16);
806 return (a & 0xFFFF) + (b << 16);
810 static av_always_inline uint16_t pack8to16(int a, int b)
813 return (b & 0xFF) + (a << 8);
815 return (a & 0xFF) + (b << 8);
822 static av_always_inline int get_chroma_qp(H264Context *h, int t, int qscale)
824 return h->pps.chroma_qp_table[t][qscale];
828 * Get the predicted intra4x4 prediction mode.
830 static av_always_inline int pred_intra_mode(H264Context *h, int n)
832 const int index8 = scan8[n];
833 const int left = h->intra4x4_pred_mode_cache[index8 - 1];
834 const int top = h->intra4x4_pred_mode_cache[index8 - 8];
835 const int min = FFMIN(left, top);
837 tprintf(h->avctx, "mode:%d %d min:%d\n", left, top, min);
845 static av_always_inline void write_back_intra_pred_mode(H264Context *h)
847 int8_t *i4x4 = h->intra4x4_pred_mode + h->mb2br_xy[h->mb_xy];
848 int8_t *i4x4_cache = h->intra4x4_pred_mode_cache;
850 AV_COPY32(i4x4, i4x4_cache + 4 + 8 * 4);
851 i4x4[4] = i4x4_cache[7 + 8 * 3];
852 i4x4[5] = i4x4_cache[7 + 8 * 2];
853 i4x4[6] = i4x4_cache[7 + 8 * 1];
856 static av_always_inline void write_back_non_zero_count(H264Context *h)
858 const int mb_xy = h->mb_xy;
859 uint8_t *nnz = h->non_zero_count[mb_xy];
860 uint8_t *nnz_cache = h->non_zero_count_cache;
862 AV_COPY32(&nnz[ 0], &nnz_cache[4 + 8 * 1]);
863 AV_COPY32(&nnz[ 4], &nnz_cache[4 + 8 * 2]);
864 AV_COPY32(&nnz[ 8], &nnz_cache[4 + 8 * 3]);
865 AV_COPY32(&nnz[12], &nnz_cache[4 + 8 * 4]);
866 AV_COPY32(&nnz[16], &nnz_cache[4 + 8 * 6]);
867 AV_COPY32(&nnz[20], &nnz_cache[4 + 8 * 7]);
868 AV_COPY32(&nnz[32], &nnz_cache[4 + 8 * 11]);
869 AV_COPY32(&nnz[36], &nnz_cache[4 + 8 * 12]);
871 if (!h->chroma_y_shift) {
872 AV_COPY32(&nnz[24], &nnz_cache[4 + 8 * 8]);
873 AV_COPY32(&nnz[28], &nnz_cache[4 + 8 * 9]);
874 AV_COPY32(&nnz[40], &nnz_cache[4 + 8 * 13]);
875 AV_COPY32(&nnz[44], &nnz_cache[4 + 8 * 14]);
879 static av_always_inline void write_back_motion_list(H264Context *h,
882 int mb_type, int list)
884 int16_t(*mv_dst)[2] = &h->cur_pic.motion_val[list][b_xy];
885 int16_t(*mv_src)[2] = &h->mv_cache[list][scan8[0]];
886 AV_COPY128(mv_dst + 0 * b_stride, mv_src + 8 * 0);
887 AV_COPY128(mv_dst + 1 * b_stride, mv_src + 8 * 1);
888 AV_COPY128(mv_dst + 2 * b_stride, mv_src + 8 * 2);
889 AV_COPY128(mv_dst + 3 * b_stride, mv_src + 8 * 3);
891 uint8_t (*mvd_dst)[2] = &h->mvd_table[list][FMO ? 8 * h->mb_xy
892 : h->mb2br_xy[h->mb_xy]];
893 uint8_t(*mvd_src)[2] = &h->mvd_cache[list][scan8[0]];
894 if (IS_SKIP(mb_type)) {
897 AV_COPY64(mvd_dst, mvd_src + 8 * 3);
898 AV_COPY16(mvd_dst + 3 + 3, mvd_src + 3 + 8 * 0);
899 AV_COPY16(mvd_dst + 3 + 2, mvd_src + 3 + 8 * 1);
900 AV_COPY16(mvd_dst + 3 + 1, mvd_src + 3 + 8 * 2);
905 int8_t *ref_index = &h->cur_pic.ref_index[list][b8_xy];
906 int8_t *ref_cache = h->ref_cache[list];
907 ref_index[0 + 0 * 2] = ref_cache[scan8[0]];
908 ref_index[1 + 0 * 2] = ref_cache[scan8[4]];
909 ref_index[0 + 1 * 2] = ref_cache[scan8[8]];
910 ref_index[1 + 1 * 2] = ref_cache[scan8[12]];
914 static av_always_inline void write_back_motion(H264Context *h, int mb_type)
916 const int b_stride = h->b_stride;
917 const int b_xy = 4 * h->mb_x + 4 * h->mb_y * h->b_stride; // try mb2b(8)_xy
918 const int b8_xy = 4 * h->mb_xy;
920 if (USES_LIST(mb_type, 0)) {
921 write_back_motion_list(h, b_stride, b_xy, b8_xy, mb_type, 0);
923 fill_rectangle(&h->cur_pic.ref_index[0][b8_xy],
924 2, 2, 2, (uint8_t)LIST_NOT_USED, 1);
926 if (USES_LIST(mb_type, 1))
927 write_back_motion_list(h, b_stride, b_xy, b8_xy, mb_type, 1);
929 if (h->slice_type_nos == AV_PICTURE_TYPE_B && CABAC(h)) {
930 if (IS_8X8(mb_type)) {
931 uint8_t *direct_table = &h->direct_table[4 * h->mb_xy];
932 direct_table[1] = h->sub_mb_type[1] >> 1;
933 direct_table[2] = h->sub_mb_type[2] >> 1;
934 direct_table[3] = h->sub_mb_type[3] >> 1;
939 static av_always_inline int get_dct8x8_allowed(H264Context *h)
941 if (h->sps.direct_8x8_inference_flag)
942 return !(AV_RN64A(h->sub_mb_type) &
943 ((MB_TYPE_16x8 | MB_TYPE_8x16 | MB_TYPE_8x8) *
944 0x0001000100010001ULL));
946 return !(AV_RN64A(h->sub_mb_type) &
947 ((MB_TYPE_16x8 | MB_TYPE_8x16 | MB_TYPE_8x8 | MB_TYPE_DIRECT2) *
948 0x0001000100010001ULL));
951 void ff_h264_draw_horiz_band(H264Context *h, int y, int height);
952 int ff_init_poc(H264Context *h, int pic_field_poc[2], int *pic_poc);
954 #endif /* AVCODEC_H264_H */