| /* |
| * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder |
| * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at> |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| /** |
| * @file |
| * H.264 / AVC / MPEG-4 part10 codec. |
| * @author Michael Niedermayer <michaelni@gmx.at> |
| */ |
| |
| #ifndef AVCODEC_H264DEC_H |
| #define AVCODEC_H264DEC_H |
| |
| #include "libavutil/buffer.h" |
| #include "libavutil/intreadwrite.h" |
| #include "libavutil/thread.h" |
| |
| #include "cabac.h" |
| #include "error_resilience.h" |
| #include "h264_parse.h" |
| #include "h264_ps.h" |
| #include "h264_sei.h" |
| #include "h2645_parse.h" |
| #include "h264chroma.h" |
| #include "h264dsp.h" |
| #include "h264pred.h" |
| #include "h264qpel.h" |
| #include "internal.h" |
| #include "mpegutils.h" |
| #include "parser.h" |
| #include "qpeldsp.h" |
| #include "rectangle.h" |
| #include "videodsp.h" |
| |
| #define H264_MAX_PICTURE_COUNT 36 |
| |
| #define MAX_MMCO_COUNT 66 |
| |
| #define MAX_DELAYED_PIC_COUNT 16 |
| |
| /* Compiling in interlaced support reduces the speed |
| * of progressive decoding by about 2%. */ |
| #define ALLOW_INTERLACE |
| |
| #define FMO 0 |
| |
| /** |
| * The maximum number of slices supported by the decoder. |
| * must be a power of 2 |
| */ |
| #define MAX_SLICES 32 |
| |
| #ifdef ALLOW_INTERLACE |
| #define MB_MBAFF(h) (h)->mb_mbaff |
| #define MB_FIELD(sl) (sl)->mb_field_decoding_flag |
| #define FRAME_MBAFF(h) (h)->mb_aff_frame |
| #define FIELD_PICTURE(h) ((h)->picture_structure != PICT_FRAME) |
| #define LEFT_MBS 2 |
| #define LTOP 0 |
| #define LBOT 1 |
| #define LEFT(i) (i) |
| #else |
| #define MB_MBAFF(h) 0 |
| #define MB_FIELD(sl) 0 |
| #define FRAME_MBAFF(h) 0 |
| #define FIELD_PICTURE(h) 0 |
| #undef IS_INTERLACED |
| #define IS_INTERLACED(mb_type) 0 |
| #define LEFT_MBS 1 |
| #define LTOP 0 |
| #define LBOT 0 |
| #define LEFT(i) 0 |
| #endif |
| #define FIELD_OR_MBAFF_PICTURE(h) (FRAME_MBAFF(h) || FIELD_PICTURE(h)) |
| |
| #ifndef CABAC |
| #define CABAC(h) (h)->ps.pps->cabac |
| #endif |
| |
| #define CHROMA(h) ((h)->ps.sps->chroma_format_idc) |
| #define CHROMA422(h) ((h)->ps.sps->chroma_format_idc == 2) |
| #define CHROMA444(h) ((h)->ps.sps->chroma_format_idc == 3) |
| |
| #define MB_TYPE_REF0 MB_TYPE_ACPRED // dirty but it fits in 16 bit |
| #define MB_TYPE_8x8DCT 0x01000000 |
| #define IS_REF0(a) ((a) & MB_TYPE_REF0) |
| #define IS_8x8DCT(a) ((a) & MB_TYPE_8x8DCT) |
| |
| /** |
| * Memory management control operation opcode. |
| */ |
| typedef enum MMCOOpcode { |
| MMCO_END = 0, |
| MMCO_SHORT2UNUSED, |
| MMCO_LONG2UNUSED, |
| MMCO_SHORT2LONG, |
| MMCO_SET_MAX_LONG, |
| MMCO_RESET, |
| MMCO_LONG, |
| } MMCOOpcode; |
| |
| /** |
| * Memory management control operation. |
| */ |
| typedef struct MMCO { |
| MMCOOpcode opcode; |
| int short_pic_num; ///< pic_num without wrapping (pic_num & max_pic_num) |
| int long_arg; ///< index, pic_num, or num long refs depending on opcode |
| } MMCO; |
| |
| typedef struct H264Picture { |
| AVFrame *f; |
| ThreadFrame tf; |
| |
| AVBufferRef *qscale_table_buf; |
| int8_t *qscale_table; |
| |
| AVBufferRef *motion_val_buf[2]; |
| int16_t (*motion_val[2])[2]; |
| |
| AVBufferRef *mb_type_buf; |
| uint32_t *mb_type; |
| |
| AVBufferRef *hwaccel_priv_buf; |
| void *hwaccel_picture_private; ///< hardware accelerator private data |
| |
| AVBufferRef *ref_index_buf[2]; |
| int8_t *ref_index[2]; |
| |
| int field_poc[2]; ///< top/bottom POC |
| int poc; ///< frame POC |
| int frame_num; ///< frame_num (raw frame_num from slice header) |
| int mmco_reset; /**< MMCO_RESET set this 1. Reordering code must |
| not mix pictures before and after MMCO_RESET. */ |
| int pic_id; /**< pic_num (short -> no wrap version of pic_num, |
| pic_num & max_pic_num; long -> long_pic_num) */ |
| int long_ref; ///< 1->long term reference 0->short term reference |
| int ref_poc[2][2][32]; ///< POCs of the frames/fields used as reference (FIXME need per slice) |
| int ref_count[2][2]; ///< number of entries in ref_poc (FIXME need per slice) |
| int mbaff; ///< 1 -> MBAFF frame 0-> not MBAFF |
| int field_picture; ///< whether or not picture was encoded in separate fields |
| |
| int reference; |
| int recovered; ///< picture at IDR or recovery point + recovery count |
| int invalid_gap; |
| int sei_recovery_frame_cnt; |
| |
| AVBufferRef *pps_buf; |
| const PPS *pps; |
| |
| int mb_width, mb_height; |
| int mb_stride; |
| } H264Picture; |
| |
| typedef struct H264Ref { |
| uint8_t *data[3]; |
| int linesize[3]; |
| |
| int reference; |
| int poc; |
| int pic_id; |
| |
| H264Picture *parent; |
| } H264Ref; |
| |
| typedef struct H264SliceContext { |
| struct H264Context *h264; |
| GetBitContext gb; |
| ERContext er; |
| |
| int slice_num; |
| int slice_type; |
| int slice_type_nos; ///< S free slice type (SI/SP are remapped to I/P) |
| int slice_type_fixed; |
| |
| int qscale; |
| int chroma_qp[2]; // QPc |
| int qp_thresh; ///< QP threshold to skip loopfilter |
| int last_qscale_diff; |
| |
| // deblock |
| int deblocking_filter; ///< disable_deblocking_filter_idc with 1 <-> 0 |
| int slice_alpha_c0_offset; |
| int slice_beta_offset; |
| |
| H264PredWeightTable pwt; |
| |
| int prev_mb_skipped; |
| int next_mb_skipped; |
| |
| int chroma_pred_mode; |
| int intra16x16_pred_mode; |
| |
| int8_t intra4x4_pred_mode_cache[5 * 8]; |
| int8_t(*intra4x4_pred_mode); |
| |
| int topleft_mb_xy; |
| int top_mb_xy; |
| int topright_mb_xy; |
| int left_mb_xy[LEFT_MBS]; |
| |
| int topleft_type; |
| int top_type; |
| int topright_type; |
| int left_type[LEFT_MBS]; |
| |
| const uint8_t *left_block; |
| int topleft_partition; |
| |
| unsigned int topleft_samples_available; |
| unsigned int top_samples_available; |
| unsigned int topright_samples_available; |
| unsigned int left_samples_available; |
| |
| ptrdiff_t linesize, uvlinesize; |
| ptrdiff_t mb_linesize; ///< may be equal to s->linesize or s->linesize * 2, for mbaff |
| ptrdiff_t mb_uvlinesize; |
| |
| int mb_x, mb_y; |
| int mb_xy; |
| int resync_mb_x; |
| int resync_mb_y; |
| unsigned int first_mb_addr; |
| // index of the first MB of the next slice |
| int next_slice_idx; |
| int mb_skip_run; |
| int is_complex; |
| |
| int picture_structure; |
| int mb_field_decoding_flag; |
| int mb_mbaff; ///< mb_aff_frame && mb_field_decoding_flag |
| |
| int redundant_pic_count; |
| |
| /** |
| * number of neighbors (top and/or left) that used 8x8 dct |
| */ |
| int neighbor_transform_size; |
| |
| int direct_spatial_mv_pred; |
| int col_parity; |
| int col_fieldoff; |
| |
| int cbp; |
| int top_cbp; |
| int left_cbp; |
| |
| int dist_scale_factor[32]; |
| int dist_scale_factor_field[2][32]; |
| int map_col_to_list0[2][16 + 32]; |
| int map_col_to_list0_field[2][2][16 + 32]; |
| |
| /** |
| * num_ref_idx_l0/1_active_minus1 + 1 |
| */ |
| unsigned int ref_count[2]; ///< counts frames or fields, depending on current mb mode |
| unsigned int list_count; |
| H264Ref ref_list[2][48]; /**< 0..15: frame refs, 16..47: mbaff field refs. |
| * Reordered version of default_ref_list |
| * according to picture reordering in slice header */ |
| struct { |
| uint8_t op; |
| uint32_t val; |
| } ref_modifications[2][32]; |
| int nb_ref_modifications[2]; |
| |
| unsigned int pps_id; |
| |
| const uint8_t *intra_pcm_ptr; |
| int16_t *dc_val_base; |
| |
| uint8_t *bipred_scratchpad; |
| uint8_t *edge_emu_buffer; |
| uint8_t (*top_borders[2])[(16 * 3) * 2]; |
| int bipred_scratchpad_allocated; |
| int edge_emu_buffer_allocated; |
| int top_borders_allocated[2]; |
| |
| /** |
| * non zero coeff count cache. |
| * is 64 if not available. |
| */ |
| DECLARE_ALIGNED(8, uint8_t, non_zero_count_cache)[15 * 8]; |
| |
| /** |
| * Motion vector cache. |
| */ |
| DECLARE_ALIGNED(16, int16_t, mv_cache)[2][5 * 8][2]; |
| DECLARE_ALIGNED(8, int8_t, ref_cache)[2][5 * 8]; |
| DECLARE_ALIGNED(16, uint8_t, mvd_cache)[2][5 * 8][2]; |
| uint8_t direct_cache[5 * 8]; |
| |
| DECLARE_ALIGNED(8, uint16_t, sub_mb_type)[4]; |
| |
| ///< as a DCT coefficient is int32_t in high depth, we need to reserve twice the space. |
| DECLARE_ALIGNED(16, int16_t, mb)[16 * 48 * 2]; |
| DECLARE_ALIGNED(16, int16_t, mb_luma_dc)[3][16 * 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 |
| int16_t mb_padding[256 * 2]; |
| |
| uint8_t (*mvd_table[2])[2]; |
| |
| /** |
| * Cabac |
| */ |
| CABACContext cabac; |
| uint8_t cabac_state[1024]; |
| int cabac_init_idc; |
| |
| MMCO mmco[MAX_MMCO_COUNT]; |
| int nb_mmco; |
| int explicit_ref_marking; |
| |
| int frame_num; |
| int poc_lsb; |
| int delta_poc_bottom; |
| int delta_poc[2]; |
| int curr_pic_num; |
| int max_pic_num; |
| } H264SliceContext; |
| |
| /** |
| * H264Context |
| */ |
| typedef struct H264Context { |
| const AVClass *class; |
| AVCodecContext *avctx; |
| VideoDSPContext vdsp; |
| H264DSPContext h264dsp; |
| H264ChromaContext h264chroma; |
| H264QpelContext h264qpel; |
| |
| H264Picture DPB[H264_MAX_PICTURE_COUNT]; |
| H264Picture *cur_pic_ptr; |
| H264Picture cur_pic; |
| H264Picture last_pic_for_ec; |
| |
| H264SliceContext *slice_ctx; |
| int nb_slice_ctx; |
| int nb_slice_ctx_queued; |
| |
| H2645Packet pkt; |
| |
| int pixel_shift; ///< 0 for 8-bit H.264, 1 for high-bit-depth H.264 |
| |
| /* coded dimensions -- 16 * mb w/h */ |
| int width, height; |
| int chroma_x_shift, chroma_y_shift; |
| |
| int droppable; |
| int coded_picture_number; |
| |
| int context_initialized; |
| int flags; |
| int workaround_bugs; |
| int x264_build; |
| /* Set when slice threading is used and at least one slice uses deblocking |
| * mode 1 (i.e. across slice boundaries). Then we disable the loop filter |
| * during normal MB decoding and execute it serially at the end. |
| */ |
| int postpone_filter; |
| |
| /* |
| * Set to 1 when the current picture is IDR, 0 otherwise. |
| */ |
| int picture_idr; |
| |
| int crop_left; |
| int crop_right; |
| int crop_top; |
| int crop_bottom; |
| |
| int8_t(*intra4x4_pred_mode); |
| H264PredContext hpc; |
| |
| uint8_t (*non_zero_count)[48]; |
| |
| #define LIST_NOT_USED -1 // FIXME rename? |
| #define PART_NOT_AVAILABLE -2 |
| |
| /** |
| * block_offset[ 0..23] for frame macroblocks |
| * block_offset[24..47] for field macroblocks |
| */ |
| int block_offset[2 * (16 * 3)]; |
| |
| uint32_t *mb2b_xy; // FIXME are these 4 a good idea? |
| uint32_t *mb2br_xy; |
| int b_stride; // FIXME use s->b4_stride |
| |
| uint16_t *slice_table; ///< slice_table_base + 2*mb_stride + 1 |
| |
| // interlacing specific flags |
| int mb_aff_frame; |
| int picture_structure; |
| int first_field; |
| |
| uint8_t *list_counts; ///< Array of list_count per MB specifying the slice type |
| |
| /* 0x100 -> non null luma_dc, 0x80/0x40 -> non null chroma_dc (cb/cr), 0x?0 -> chroma_cbp(0, 1, 2), 0x0? luma_cbp */ |
| uint16_t *cbp_table; |
| |
| /* chroma_pred_mode for i4x4 or i16x16, else 0 */ |
| uint8_t *chroma_pred_mode_table; |
| uint8_t (*mvd_table[2])[2]; |
| uint8_t *direct_table; |
| |
| uint8_t scan_padding[16]; |
| uint8_t zigzag_scan[16]; |
| uint8_t zigzag_scan8x8[64]; |
| uint8_t zigzag_scan8x8_cavlc[64]; |
| uint8_t field_scan[16]; |
| uint8_t field_scan8x8[64]; |
| uint8_t field_scan8x8_cavlc[64]; |
| uint8_t zigzag_scan_q0[16]; |
| uint8_t zigzag_scan8x8_q0[64]; |
| uint8_t zigzag_scan8x8_cavlc_q0[64]; |
| uint8_t field_scan_q0[16]; |
| uint8_t field_scan8x8_q0[64]; |
| uint8_t field_scan8x8_cavlc_q0[64]; |
| |
| int mb_y; |
| int mb_height, mb_width; |
| int mb_stride; |
| int mb_num; |
| |
| // ============================================================= |
| // Things below are not used in the MB or more inner code |
| |
| int nal_ref_idc; |
| int nal_unit_type; |
| |
| int has_slice; ///< slice NAL is found in the packet, set by decode_nal_units, its state does not need to be preserved outside h264_decode_frame() |
| |
| /** |
| * Used to parse AVC variant of H.264 |
| */ |
| int is_avc; ///< this flag is != 0 if codec is avc1 |
| int nal_length_size; ///< Number of bytes used for nal length (1, 2 or 4) |
| |
| int bit_depth_luma; ///< luma bit depth from sps to detect changes |
| int chroma_format_idc; ///< chroma format from sps to detect changes |
| |
| H264ParamSets ps; |
| |
| uint16_t *slice_table_base; |
| |
| H264POCContext poc; |
| |
| H264Ref default_ref[2]; |
| H264Picture *short_ref[32]; |
| H264Picture *long_ref[32]; |
| H264Picture *delayed_pic[MAX_DELAYED_PIC_COUNT + 2]; // FIXME size? |
| int last_pocs[MAX_DELAYED_PIC_COUNT]; |
| H264Picture *next_output_pic; |
| int next_outputed_poc; |
| |
| /** |
| * memory management control operations buffer. |
| */ |
| MMCO mmco[MAX_MMCO_COUNT]; |
| int nb_mmco; |
| int mmco_reset; |
| int explicit_ref_marking; |
| |
| int long_ref_count; ///< number of actual long term references |
| int short_ref_count; ///< number of actual short term references |
| |
| /** |
| * @name Members for slice based multithreading |
| * @{ |
| */ |
| /** |
| * current slice number, used to initialize slice_num of each thread/context |
| */ |
| int current_slice; |
| |
| /** @} */ |
| |
| /** |
| * Complement sei_pic_struct |
| * SEI_PIC_STRUCT_TOP_BOTTOM and SEI_PIC_STRUCT_BOTTOM_TOP indicate interlaced frames. |
| * However, soft telecined frames may have these values. |
| * This is used in an attempt to flag soft telecine progressive. |
| */ |
| int prev_interlaced_frame; |
| |
| /** |
| * Are the SEI recovery points looking valid. |
| */ |
| int valid_recovery_point; |
| |
| /** |
| * recovery_frame is the frame_num at which the next frame should |
| * be fully constructed. |
| * |
| * Set to -1 when not expecting a recovery point. |
| */ |
| int recovery_frame; |
| |
| /** |
| * We have seen an IDR, so all the following frames in coded order are correctly |
| * decodable. |
| */ |
| #define FRAME_RECOVERED_IDR (1 << 0) |
| /** |
| * Sufficient number of frames have been decoded since a SEI recovery point, |
| * so all the following frames in presentation order are correct. |
| */ |
| #define FRAME_RECOVERED_SEI (1 << 1) |
| |
| int frame_recovered; ///< Initial frame has been completely recovered |
| |
| int has_recovery_point; |
| |
| int missing_fields; |
| |
| /* for frame threading, this is set to 1 |
| * after finish_setup() has been called, so we cannot modify |
| * some context properties (which are supposed to stay constant between |
| * slices) anymore */ |
| int setup_finished; |
| |
| int cur_chroma_format_idc; |
| int cur_bit_depth_luma; |
| int16_t slice_row[MAX_SLICES]; ///< to detect when MAX_SLICES is too low |
| |
| /* original AVCodecContext dimensions, used to handle container |
| * cropping */ |
| int width_from_caller; |
| int height_from_caller; |
| |
| int enable_er; |
| |
| H264SEIContext sei; |
| |
| AVBufferPool *qscale_table_pool; |
| AVBufferPool *mb_type_pool; |
| AVBufferPool *motion_val_pool; |
| AVBufferPool *ref_index_pool; |
| int ref2frm[MAX_SLICES][2][64]; ///< reference to frame number lists, used in the loop filter, the first 2 are for -2,-1 |
| } H264Context; |
| |
| extern const uint16_t ff_h264_mb_sizes[4]; |
| |
| /** |
| * Reconstruct bitstream slice_type. |
| */ |
| int ff_h264_get_slice_type(const H264SliceContext *sl); |
| |
| /** |
| * Allocate tables. |
| * needs width/height |
| */ |
| int ff_h264_alloc_tables(H264Context *h); |
| |
| int ff_h264_decode_ref_pic_list_reordering(H264SliceContext *sl, void *logctx); |
| int ff_h264_build_ref_list(H264Context *h, H264SliceContext *sl); |
| void ff_h264_remove_all_refs(H264Context *h); |
| |
| /** |
| * Execute the reference picture marking (memory management control operations). |
| */ |
| int ff_h264_execute_ref_pic_marking(H264Context *h); |
| |
| int ff_h264_decode_ref_pic_marking(H264SliceContext *sl, GetBitContext *gb, |
| const H2645NAL *nal, void *logctx); |
| |
| void ff_h264_hl_decode_mb(const H264Context *h, H264SliceContext *sl); |
| void ff_h264_decode_init_vlc(void); |
| |
| /** |
| * Decode a macroblock |
| * @return 0 if OK, ER_AC_ERROR / ER_DC_ERROR / ER_MV_ERROR on error |
| */ |
| int ff_h264_decode_mb_cavlc(const H264Context *h, H264SliceContext *sl); |
| |
| /** |
| * Decode a CABAC coded macroblock |
| * @return 0 if OK, ER_AC_ERROR / ER_DC_ERROR / ER_MV_ERROR on error |
| */ |
| int ff_h264_decode_mb_cabac(const H264Context *h, H264SliceContext *sl); |
| |
| void ff_h264_init_cabac_states(const H264Context *h, H264SliceContext *sl); |
| |
| void ff_h264_direct_dist_scale_factor(const H264Context *const h, H264SliceContext *sl); |
| void ff_h264_direct_ref_list_init(const H264Context *const h, H264SliceContext *sl); |
| void ff_h264_pred_direct_motion(const H264Context *const h, H264SliceContext *sl, |
| int *mb_type); |
| |
| void ff_h264_filter_mb_fast(const H264Context *h, H264SliceContext *sl, int mb_x, int mb_y, |
| uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr, |
| unsigned int linesize, unsigned int uvlinesize); |
| void ff_h264_filter_mb(const H264Context *h, H264SliceContext *sl, int mb_x, int mb_y, |
| uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr, |
| unsigned int linesize, unsigned int uvlinesize); |
| |
| /* |
| * o-o o-o |
| * / / / |
| * o-o o-o |
| * ,---' |
| * o-o o-o |
| * / / / |
| * o-o o-o |
| */ |
| |
| /* Scan8 organization: |
| * 0 1 2 3 4 5 6 7 |
| * 0 DY y y y y y |
| * 1 y Y Y Y Y |
| * 2 y Y Y Y Y |
| * 3 y Y Y Y Y |
| * 4 y Y Y Y Y |
| * 5 DU u u u u u |
| * 6 u U U U U |
| * 7 u U U U U |
| * 8 u U U U U |
| * 9 u U U U U |
| * 10 DV v v v v v |
| * 11 v V V V V |
| * 12 v V V V V |
| * 13 v V V V V |
| * 14 v V V V V |
| * DY/DU/DV are for luma/chroma DC. |
| */ |
| |
| #define LUMA_DC_BLOCK_INDEX 48 |
| #define CHROMA_DC_BLOCK_INDEX 49 |
| |
| // This table must be here because scan8[constant] must be known at compiletime |
| static const uint8_t scan8[16 * 3 + 3] = { |
| 4 + 1 * 8, 5 + 1 * 8, 4 + 2 * 8, 5 + 2 * 8, |
| 6 + 1 * 8, 7 + 1 * 8, 6 + 2 * 8, 7 + 2 * 8, |
| 4 + 3 * 8, 5 + 3 * 8, 4 + 4 * 8, 5 + 4 * 8, |
| 6 + 3 * 8, 7 + 3 * 8, 6 + 4 * 8, 7 + 4 * 8, |
| 4 + 6 * 8, 5 + 6 * 8, 4 + 7 * 8, 5 + 7 * 8, |
| 6 + 6 * 8, 7 + 6 * 8, 6 + 7 * 8, 7 + 7 * 8, |
| 4 + 8 * 8, 5 + 8 * 8, 4 + 9 * 8, 5 + 9 * 8, |
| 6 + 8 * 8, 7 + 8 * 8, 6 + 9 * 8, 7 + 9 * 8, |
| 4 + 11 * 8, 5 + 11 * 8, 4 + 12 * 8, 5 + 12 * 8, |
| 6 + 11 * 8, 7 + 11 * 8, 6 + 12 * 8, 7 + 12 * 8, |
| 4 + 13 * 8, 5 + 13 * 8, 4 + 14 * 8, 5 + 14 * 8, |
| 6 + 13 * 8, 7 + 13 * 8, 6 + 14 * 8, 7 + 14 * 8, |
| 0 + 0 * 8, 0 + 5 * 8, 0 + 10 * 8 |
| }; |
| |
| static av_always_inline uint32_t pack16to32(unsigned a, unsigned b) |
| { |
| #if HAVE_BIGENDIAN |
| return (b & 0xFFFF) + (a << 16); |
| #else |
| return (a & 0xFFFF) + (b << 16); |
| #endif |
| } |
| |
| static av_always_inline uint16_t pack8to16(unsigned a, unsigned b) |
| { |
| #if HAVE_BIGENDIAN |
| return (b & 0xFF) + (a << 8); |
| #else |
| return (a & 0xFF) + (b << 8); |
| #endif |
| } |
| |
| /** |
| * Get the chroma qp. |
| */ |
| static av_always_inline int get_chroma_qp(const PPS *pps, int t, int qscale) |
| { |
| return pps->chroma_qp_table[t][qscale]; |
| } |
| |
| /** |
| * Get the predicted intra4x4 prediction mode. |
| */ |
| static av_always_inline int pred_intra_mode(const H264Context *h, |
| H264SliceContext *sl, int n) |
| { |
| const int index8 = scan8[n]; |
| const int left = sl->intra4x4_pred_mode_cache[index8 - 1]; |
| const int top = sl->intra4x4_pred_mode_cache[index8 - 8]; |
| const int min = FFMIN(left, top); |
| |
| ff_tlog(h->avctx, "mode:%d %d min:%d\n", left, top, min); |
| |
| if (min < 0) |
| return DC_PRED; |
| else |
| return min; |
| } |
| |
| static av_always_inline void write_back_intra_pred_mode(const H264Context *h, |
| H264SliceContext *sl) |
| { |
| int8_t *i4x4 = sl->intra4x4_pred_mode + h->mb2br_xy[sl->mb_xy]; |
| int8_t *i4x4_cache = sl->intra4x4_pred_mode_cache; |
| |
| AV_COPY32(i4x4, i4x4_cache + 4 + 8 * 4); |
| i4x4[4] = i4x4_cache[7 + 8 * 3]; |
| i4x4[5] = i4x4_cache[7 + 8 * 2]; |
| i4x4[6] = i4x4_cache[7 + 8 * 1]; |
| } |
| |
| static av_always_inline void write_back_non_zero_count(const H264Context *h, |
| H264SliceContext *sl) |
| { |
| const int mb_xy = sl->mb_xy; |
| uint8_t *nnz = h->non_zero_count[mb_xy]; |
| uint8_t *nnz_cache = sl->non_zero_count_cache; |
| |
| AV_COPY32(&nnz[ 0], &nnz_cache[4 + 8 * 1]); |
| AV_COPY32(&nnz[ 4], &nnz_cache[4 + 8 * 2]); |
| AV_COPY32(&nnz[ 8], &nnz_cache[4 + 8 * 3]); |
| AV_COPY32(&nnz[12], &nnz_cache[4 + 8 * 4]); |
| AV_COPY32(&nnz[16], &nnz_cache[4 + 8 * 6]); |
| AV_COPY32(&nnz[20], &nnz_cache[4 + 8 * 7]); |
| AV_COPY32(&nnz[32], &nnz_cache[4 + 8 * 11]); |
| AV_COPY32(&nnz[36], &nnz_cache[4 + 8 * 12]); |
| |
| if (!h->chroma_y_shift) { |
| AV_COPY32(&nnz[24], &nnz_cache[4 + 8 * 8]); |
| AV_COPY32(&nnz[28], &nnz_cache[4 + 8 * 9]); |
| AV_COPY32(&nnz[40], &nnz_cache[4 + 8 * 13]); |
| AV_COPY32(&nnz[44], &nnz_cache[4 + 8 * 14]); |
| } |
| } |
| |
| static av_always_inline void write_back_motion_list(const H264Context *h, |
| H264SliceContext *sl, |
| int b_stride, |
| int b_xy, int b8_xy, |
| int mb_type, int list) |
| { |
| int16_t(*mv_dst)[2] = &h->cur_pic.motion_val[list][b_xy]; |
| int16_t(*mv_src)[2] = &sl->mv_cache[list][scan8[0]]; |
| AV_COPY128(mv_dst + 0 * b_stride, mv_src + 8 * 0); |
| AV_COPY128(mv_dst + 1 * b_stride, mv_src + 8 * 1); |
| AV_COPY128(mv_dst + 2 * b_stride, mv_src + 8 * 2); |
| AV_COPY128(mv_dst + 3 * b_stride, mv_src + 8 * 3); |
| if (CABAC(h)) { |
| uint8_t (*mvd_dst)[2] = &sl->mvd_table[list][FMO ? 8 * sl->mb_xy |
| : h->mb2br_xy[sl->mb_xy]]; |
| uint8_t(*mvd_src)[2] = &sl->mvd_cache[list][scan8[0]]; |
| if (IS_SKIP(mb_type)) { |
| AV_ZERO128(mvd_dst); |
| } else { |
| AV_COPY64(mvd_dst, mvd_src + 8 * 3); |
| AV_COPY16(mvd_dst + 3 + 3, mvd_src + 3 + 8 * 0); |
| AV_COPY16(mvd_dst + 3 + 2, mvd_src + 3 + 8 * 1); |
| AV_COPY16(mvd_dst + 3 + 1, mvd_src + 3 + 8 * 2); |
| } |
| } |
| |
| { |
| int8_t *ref_index = &h->cur_pic.ref_index[list][b8_xy]; |
| int8_t *ref_cache = sl->ref_cache[list]; |
| ref_index[0 + 0 * 2] = ref_cache[scan8[0]]; |
| ref_index[1 + 0 * 2] = ref_cache[scan8[4]]; |
| ref_index[0 + 1 * 2] = ref_cache[scan8[8]]; |
| ref_index[1 + 1 * 2] = ref_cache[scan8[12]]; |
| } |
| } |
| |
| static av_always_inline void write_back_motion(const H264Context *h, |
| H264SliceContext *sl, |
| int mb_type) |
| { |
| const int b_stride = h->b_stride; |
| const int b_xy = 4 * sl->mb_x + 4 * sl->mb_y * h->b_stride; // try mb2b(8)_xy |
| const int b8_xy = 4 * sl->mb_xy; |
| |
| if (USES_LIST(mb_type, 0)) { |
| write_back_motion_list(h, sl, b_stride, b_xy, b8_xy, mb_type, 0); |
| } else { |
| fill_rectangle(&h->cur_pic.ref_index[0][b8_xy], |
| 2, 2, 2, (uint8_t)LIST_NOT_USED, 1); |
| } |
| if (USES_LIST(mb_type, 1)) |
| write_back_motion_list(h, sl, b_stride, b_xy, b8_xy, mb_type, 1); |
| |
| if (sl->slice_type_nos == AV_PICTURE_TYPE_B && CABAC(h)) { |
| if (IS_8X8(mb_type)) { |
| uint8_t *direct_table = &h->direct_table[4 * sl->mb_xy]; |
| direct_table[1] = sl->sub_mb_type[1] >> 1; |
| direct_table[2] = sl->sub_mb_type[2] >> 1; |
| direct_table[3] = sl->sub_mb_type[3] >> 1; |
| } |
| } |
| } |
| |
| static av_always_inline int get_dct8x8_allowed(const H264Context *h, H264SliceContext *sl) |
| { |
| if (h->ps.sps->direct_8x8_inference_flag) |
| return !(AV_RN64A(sl->sub_mb_type) & |
| ((MB_TYPE_16x8 | MB_TYPE_8x16 | MB_TYPE_8x8) * |
| 0x0001000100010001ULL)); |
| else |
| return !(AV_RN64A(sl->sub_mb_type) & |
| ((MB_TYPE_16x8 | MB_TYPE_8x16 | MB_TYPE_8x8 | MB_TYPE_DIRECT2) * |
| 0x0001000100010001ULL)); |
| } |
| |
| static inline int find_start_code(const uint8_t *buf, int buf_size, |
| int buf_index, int next_avc) |
| { |
| uint32_t state = -1; |
| |
| buf_index = avpriv_find_start_code(buf + buf_index, buf + next_avc + 1, &state) - buf - 1; |
| |
| return FFMIN(buf_index, buf_size); |
| } |
| |
| int ff_h264_field_end(H264Context *h, H264SliceContext *sl, int in_setup); |
| |
| int ff_h264_ref_picture(H264Context *h, H264Picture *dst, H264Picture *src); |
| void ff_h264_unref_picture(H264Context *h, H264Picture *pic); |
| |
| int ff_h264_slice_context_init(H264Context *h, H264SliceContext *sl); |
| |
| void ff_h264_draw_horiz_band(const H264Context *h, H264SliceContext *sl, int y, int height); |
| |
| /** |
| * Submit a slice for decoding. |
| * |
| * Parse the slice header, starting a new field/frame if necessary. If any |
| * slices are queued for the previous field, they are decoded. |
| */ |
| int ff_h264_queue_decode_slice(H264Context *h, const H2645NAL *nal); |
| int ff_h264_execute_decode_slices(H264Context *h); |
| int ff_h264_update_thread_context(AVCodecContext *dst, |
| const AVCodecContext *src); |
| |
| void ff_h264_flush_change(H264Context *h); |
| |
| void ff_h264_free_tables(H264Context *h); |
| |
| void ff_h264_set_erpic(ERPicture *dst, H264Picture *src); |
| |
| #endif /* AVCODEC_H264DEC_H */ |
