X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fh264.h;h=eb3805c0678d9d4aeeba7639bb7a4f40791da5c5;hb=00fd914d4912322212e924c15f325cebf2fde8d3;hp=398a2837b80001e925a617dc2421c835d8ca302c;hpb=19446dc5fff6a2f5ccd1a73db66e266255a5d768;p=ffmpeg diff --git a/libavcodec/h264.h b/libavcodec/h264.h index 398a2837b80..eb3805c0678 100644 --- a/libavcodec/h264.h +++ b/libavcodec/h264.h @@ -1,7 +1,4 @@ /* - * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder - * Copyright (c) 2003 Michael Niedermayer - * * This file is part of Libav. * * Libav is free software; you can redistribute it and/or @@ -21,918 +18,30 @@ /** * @file - * H.264 / AVC / MPEG-4 part10 codec. - * @author Michael Niedermayer + * H.264 common definitions */ #ifndef AVCODEC_H264_H #define AVCODEC_H264_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_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 32 - -#define MAX_SPS_COUNT 32 -#define MAX_PPS_COUNT 256 - -#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(h) h->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(h) 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 CHROMA422(h) (h->ps.sps->chroma_format_idc == 2) -#define CHROMA444(h) (h->ps.sps->chroma_format_idc == 3) - -#define EXTENDED_SAR 255 - -#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) - #define QP_MAX_NUM (51 + 2 * 6) // The maximum supported qp /* NAL unit types */ enum { - NAL_SLICE = 1, - NAL_DPA = 2, - NAL_DPB = 3, - NAL_DPC = 4, - NAL_IDR_SLICE = 5, - NAL_SEI = 6, - NAL_SPS = 7, - NAL_PPS = 8, - NAL_AUD = 9, - NAL_END_SEQUENCE = 10, - NAL_END_STREAM = 11, - NAL_FILLER_DATA = 12, - NAL_SPS_EXT = 13, - NAL_AUXILIARY_SLICE = 19, + H264_NAL_SLICE = 1, + H264_NAL_DPA = 2, + H264_NAL_DPB = 3, + H264_NAL_DPC = 4, + H264_NAL_IDR_SLICE = 5, + H264_NAL_SEI = 6, + H264_NAL_SPS = 7, + H264_NAL_PPS = 8, + H264_NAL_AUD = 9, + H264_NAL_END_SEQUENCE = 10, + H264_NAL_END_STREAM = 11, + H264_NAL_FILLER_DATA = 12, + H264_NAL_SPS_EXT = 13, + H264_NAL_AUXILIARY_SLICE = 19, }; -/** - * Sequence parameter set - */ -typedef struct SPS { - unsigned int sps_id; - int profile_idc; - int level_idc; - int chroma_format_idc; - int transform_bypass; ///< qpprime_y_zero_transform_bypass_flag - int log2_max_frame_num; ///< log2_max_frame_num_minus4 + 4 - int poc_type; ///< pic_order_cnt_type - int log2_max_poc_lsb; ///< log2_max_pic_order_cnt_lsb_minus4 - int delta_pic_order_always_zero_flag; - int offset_for_non_ref_pic; - int offset_for_top_to_bottom_field; - int poc_cycle_length; ///< num_ref_frames_in_pic_order_cnt_cycle - int ref_frame_count; ///< num_ref_frames - int gaps_in_frame_num_allowed_flag; - int mb_width; ///< pic_width_in_mbs_minus1 + 1 - int mb_height; ///< pic_height_in_map_units_minus1 + 1 - int frame_mbs_only_flag; - int mb_aff; ///< mb_adaptive_frame_field_flag - int direct_8x8_inference_flag; - int crop; ///< frame_cropping_flag - - /* those 4 are already in luma samples */ - unsigned int crop_left; ///< frame_cropping_rect_left_offset - unsigned int crop_right; ///< frame_cropping_rect_right_offset - unsigned int crop_top; ///< frame_cropping_rect_top_offset - unsigned int crop_bottom; ///< frame_cropping_rect_bottom_offset - int vui_parameters_present_flag; - AVRational sar; - int video_signal_type_present_flag; - int full_range; - int colour_description_present_flag; - enum AVColorPrimaries color_primaries; - enum AVColorTransferCharacteristic color_trc; - enum AVColorSpace colorspace; - int timing_info_present_flag; - uint32_t num_units_in_tick; - uint32_t time_scale; - int fixed_frame_rate_flag; - short offset_for_ref_frame[256]; // FIXME dyn aloc? - int bitstream_restriction_flag; - int num_reorder_frames; - int scaling_matrix_present; - uint8_t scaling_matrix4[6][16]; - uint8_t scaling_matrix8[6][64]; - int nal_hrd_parameters_present_flag; - int vcl_hrd_parameters_present_flag; - int pic_struct_present_flag; - int time_offset_length; - int cpb_cnt; ///< See H.264 E.1.2 - int initial_cpb_removal_delay_length; ///< initial_cpb_removal_delay_length_minus1 + 1 - int cpb_removal_delay_length; ///< cpb_removal_delay_length_minus1 + 1 - int dpb_output_delay_length; ///< dpb_output_delay_length_minus1 + 1 - int bit_depth_luma; ///< bit_depth_luma_minus8 + 8 - int bit_depth_chroma; ///< bit_depth_chroma_minus8 + 8 - int residual_color_transform_flag; ///< residual_colour_transform_flag - int constraint_set_flags; ///< constraint_set[0-3]_flag -} SPS; - -/** - * Picture parameter set - */ -typedef struct PPS { - unsigned int sps_id; - int cabac; ///< entropy_coding_mode_flag - int pic_order_present; ///< pic_order_present_flag - int slice_group_count; ///< num_slice_groups_minus1 + 1 - int mb_slice_group_map_type; - unsigned int ref_count[2]; ///< num_ref_idx_l0/1_active_minus1 + 1 - int weighted_pred; ///< weighted_pred_flag - int weighted_bipred_idc; - int init_qp; ///< pic_init_qp_minus26 + 26 - int init_qs; ///< pic_init_qs_minus26 + 26 - int chroma_qp_index_offset[2]; - int deblocking_filter_parameters_present; ///< deblocking_filter_parameters_present_flag - int constrained_intra_pred; ///< constrained_intra_pred_flag - int redundant_pic_cnt_present; ///< redundant_pic_cnt_present_flag - int transform_8x8_mode; ///< transform_8x8_mode_flag - uint8_t scaling_matrix4[6][16]; - uint8_t scaling_matrix8[6][64]; - uint8_t chroma_qp_table[2][64]; ///< pre-scaled (with chroma_qp_index_offset) version of qp_table - int chroma_qp_diff; - - uint32_t dequant4_buffer[6][QP_MAX_NUM + 1][16]; - uint32_t dequant8_buffer[6][QP_MAX_NUM + 1][64]; - uint32_t(*dequant4_coeff[6])[16]; - uint32_t(*dequant8_coeff[6])[64]; -} PPS; - -typedef struct H264ParamSets { - AVBufferRef *sps_list[MAX_SPS_COUNT]; - AVBufferRef *pps_list[MAX_PPS_COUNT]; - - /* currently active parameters sets */ - const PPS *pps; - // FIXME this should properly be const - SPS *sps; -} H264ParamSets; - -/** - * 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 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 -} 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; - uint8_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; - - H264SliceContext *slice_ctx; - int nb_slice_ctx; - - 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; - /* 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; - - 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 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]; - const uint8_t *zigzag_scan_q0; - const uint8_t *zigzag_scan8x8_q0; - const uint8_t *zigzag_scan8x8_cavlc_q0; - const uint8_t *field_scan_q0; - const uint8_t *field_scan8x8_q0; - const uint8_t *field_scan8x8_cavlc_q0; - - 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; - - /** - * 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; - - 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; - - /** - * 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 - - /* 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 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]; - -/** - * Decode SPS - */ -int ff_h264_decode_seq_parameter_set(GetBitContext *gb, AVCodecContext *avctx, - H264ParamSets *ps); - -/** - * Decode PPS - */ -int ff_h264_decode_picture_parameter_set(GetBitContext *gb, AVCodecContext *avctx, - H264ParamSets *ps, int bit_length); - -/** - * 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(const H264Context *h, H264SliceContext *sl); -int ff_h264_build_ref_list(const 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(const H264Context *h, H264SliceContext *sl, - GetBitContext *gb); - -void ff_h264_hl_decode_mb(const H264Context *h, H264SliceContext *sl); -int ff_h264_decode_init(AVCodecContext *avctx); -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_init_dequant_tables(H264Context *h); - -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(int a, int b) -{ -#if HAVE_BIGENDIAN - return (b & 0xFFFF) + (a << 16); -#else - return (a & 0xFFFF) + (b << 16); -#endif -} - -static av_always_inline uint16_t pack8to16(int a, int 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)); -} - -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); - -int ff_h264_decode_slice_header(H264Context *h, H264SliceContext *sl, - const H2645NAL *nal); -int ff_h264_execute_decode_slices(H264Context *h, unsigned context_count); -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); - #endif /* AVCODEC_H264_H */