28 #ifndef AVCODEC_H264_H
29 #define AVCODEC_H264_H
39 #define interlaced_dct interlaced_dct_is_a_bad_name
40 #define mb_intra mb_intra_is_not_initialized_see_mb_type
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
51 #define ALLOW_INTERLACE
61 #ifdef ALLOW_INTERLACE
62 #define MB_MBAFF h->mb_mbaff
63 #define MB_FIELD h->mb_field_decoding_flag
64 #define FRAME_MBAFF h->mb_aff_frame
65 #define FIELD_PICTURE (s->picture_structure != PICT_FRAME)
74 #define FIELD_PICTURE 0
76 #define IS_INTERLACED(mb_type) 0
82 #define FIELD_OR_MBAFF_PICTURE (FRAME_MBAFF || FIELD_PICTURE)
85 #define CABAC h->pps.cabac
88 #define CHROMA422 (h->sps.chroma_format_idc == 2)
89 #define CHROMA444 (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
304 #define LIST_NOT_USED -1 // FIXME rename?
305 #define PART_NOT_AVAILABLE -2
615 int *dst_length,
int *consumed,
int length);
691 unsigned int linesize,
unsigned int uvlinesize);
694 unsigned int linesize,
unsigned int uvlinesize);
733 #define LUMA_DC_BLOCK_INDEX 48
734 #define CHROMA_DC_BLOCK_INDEX 49
738 4 + 1 * 8, 5 + 1 * 8, 4 + 2 * 8, 5 + 2 * 8,
739 6 + 1 * 8, 7 + 1 * 8, 6 + 2 * 8, 7 + 2 * 8,
740 4 + 3 * 8, 5 + 3 * 8, 4 + 4 * 8, 5 + 4 * 8,
741 6 + 3 * 8, 7 + 3 * 8, 6 + 4 * 8, 7 + 4 * 8,
742 4 + 6 * 8, 5 + 6 * 8, 4 + 7 * 8, 5 + 7 * 8,
743 6 + 6 * 8, 7 + 6 * 8, 6 + 7 * 8, 7 + 7 * 8,
744 4 + 8 * 8, 5 + 8 * 8, 4 + 9 * 8, 5 + 9 * 8,
745 6 + 8 * 8, 7 + 8 * 8, 6 + 9 * 8, 7 + 9 * 8,
746 4 + 11 * 8, 5 + 11 * 8, 4 + 12 * 8, 5 + 12 * 8,
747 6 + 11 * 8, 7 + 11 * 8, 6 + 12 * 8, 7 + 12 * 8,
748 4 + 13 * 8, 5 + 13 * 8, 4 + 14 * 8, 5 + 14 * 8,
749 6 + 13 * 8, 7 + 13 * 8, 6 + 14 * 8, 7 + 14 * 8,
750 0 + 0 * 8, 0 + 5 * 8, 0 + 10 * 8
756 return (b & 0xFFFF) + (a << 16);
758 return (a & 0xFFFF) + (b << 16);
765 return (b & 0xFF) + (a << 8);
767 return (a & 0xFF) + (b << 8);
784 const int index8 =
scan8[n];
803 i4x4[4] = i4x4_cache[7 + 8 * 3];
804 i4x4[5] = i4x4_cache[7 + 8 * 2];
805 i4x4[6] = i4x4_cache[7 + 8 * 1];
814 AV_COPY32(&nnz[ 0], &nnz_cache[4 + 8 * 1]);
815 AV_COPY32(&nnz[ 4], &nnz_cache[4 + 8 * 2]);
816 AV_COPY32(&nnz[ 8], &nnz_cache[4 + 8 * 3]);
817 AV_COPY32(&nnz[12], &nnz_cache[4 + 8 * 4]);
818 AV_COPY32(&nnz[16], &nnz_cache[4 + 8 * 6]);
819 AV_COPY32(&nnz[20], &nnz_cache[4 + 8 * 7]);
820 AV_COPY32(&nnz[32], &nnz_cache[4 + 8 * 11]);
821 AV_COPY32(&nnz[36], &nnz_cache[4 + 8 * 12]);
824 AV_COPY32(&nnz[24], &nnz_cache[4 + 8 * 8]);
825 AV_COPY32(&nnz[28], &nnz_cache[4 + 8 * 9]);
826 AV_COPY32(&nnz[40], &nnz_cache[4 + 8 * 13]);
827 AV_COPY32(&nnz[44], &nnz_cache[4 + 8 * 14]);
835 int mb_type,
int list)
839 AV_COPY128(mv_dst + 0 * b_stride, mv_src + 8 * 0);
840 AV_COPY128(mv_dst + 1 * b_stride, mv_src + 8 * 1);
841 AV_COPY128(mv_dst + 2 * b_stride, mv_src + 8 * 2);
842 AV_COPY128(mv_dst + 3 * b_stride, mv_src + 8 * 3);
851 AV_COPY16(mvd_dst + 3 + 3, mvd_src + 3 + 8 * 0);
852 AV_COPY16(mvd_dst + 3 + 2, mvd_src + 3 + 8 * 1);
853 AV_COPY16(mvd_dst + 3 + 1, mvd_src + 3 + 8 * 2);
860 ref_index[0 + 0 * 2] = ref_cache[
scan8[0]];
861 ref_index[1 + 0 * 2] = ref_cache[scan8[4]];
862 ref_index[0 + 1 * 2] = ref_cache[scan8[8]];
863 ref_index[1 + 1 * 2] = ref_cache[scan8[12]];
872 const int b8_xy = 4 * h->
mb_xy;
898 0x0001000100010001ULL));
902 0x0001000100010001ULL));
Picture default_ref_list[2][32]
base reference list for all slices of a coded picture
static av_always_inline uint16_t pack8to16(int a, int b)
void ff_h264_direct_dist_scale_factor(H264Context *const h)
int video_signal_type_present_flag
static av_always_inline int get_dct8x8_allowed(H264Context *h)
int ff_h264_decode_mb_cabac(H264Context *h)
Decode a CABAC coded macroblock.
Memory management control operation.
int ff_h264_decode_seq_parameter_set(H264Context *h)
Decode SPS.
unsigned int top_samples_available
unsigned int topleft_samples_available
int single_decode_warning
1 if the single thread fallback warning has already been displayed, 0 otherwise.
5: top field, bottom field, top field repeated, in that order
int sei_cpb_removal_delay
cpb_removal_delay in picture timing SEI message, see H.264 C.1.2
GetBitContext * intra_gb_ptr
3: top field, bottom field, in that order
int ff_h264_check_intra4x4_pred_mode(H264Context *h)
Check if the top & left blocks are available if needed & change the dc mode so it only uses the avail...
int ff_h264_get_slice_type(const H264Context *h)
Reconstruct bitstream slice_type.
int chroma_qp_index_offset[2]
uint8_t cabac_state[1024]
int scaling_matrix_present
int luma_weight_flag[2]
7.4.3.2 luma_weight_lX_flag
MMCO mmco[MAX_MMCO_COUNT]
memory management control operations buffer.
uint8_t scaling_matrix4[6][16]
int initial_cpb_removal_delay[32]
Initial timestamps for CPBs.
int bitstream_restriction_flag
unsigned int ref_count[2]
num_ref_idx_l0/1_active_minus1 + 1
int ff_h264_decode_extradata(H264Context *h)
const uint8_t * field_scan8x8_q0
int is_avc
Used to parse AVC variant of h264.
MMCOOpcode
Memory management control operation opcode.
uint8_t zigzag_scan8x8_cavlc[64]
uint32_t dequant8_buffer[6][QP_MAX_NUM+1][64]
int16_t mv_cache[2][5 *8][2]
Motion vector cache.
int prev_poc_msb
poc_msb of the last reference pic for POC type 0
static av_always_inline void write_back_motion(H264Context *h, int mb_type)
uint32_t num_units_in_tick
struct H264Context H264Context
H264Context.
4: bottom field, top field, in that order
int slice_type_nos
S free slice type (SI/SP are remapped to I/P)
av_cold void ff_h264_free_context(H264Context *h)
Free any data that may have been allocated in the H264 context like SPS, PPS etc. ...
unsigned current_sps_id
id of the current SPS
static av_always_inline uint32_t pack16to32(int a, int b)
void ff_h264_init_cabac_states(H264Context *h)
static av_always_inline int pred_intra_mode(H264Context *h, int n)
Get the predicted intra4x4 prediction mode.
#define USES_LIST(a, list)
does this mb use listX, note does not work if subMBs
uint8_t * chroma_pred_mode_table
int ff_h264_decode_ref_pic_list_reordering(H264Context *h)
unsigned int crop_top
frame_cropping_rect_top_offset
int fixed_frame_rate_flag
uint8_t scaling_matrix4[6][16]
int ref2frm[MAX_SLICES][2][64]
reference to frame number lists, used in the loop filter, the first 2 are for -2,-1 ...
int deblocking_filter_parameters_present
deblocking_filter_parameters_present_flag
int short_pic_num
pic_num without wrapping (pic_num & max_pic_num)
DCTELEM mb_luma_dc[3][16 *2]
uint32_t(*[6] dequant4_coeff)[16]
int prev_frame_num_offset
for POC type 2
unsigned int crop_left
frame_cropping_rect_left_offset
int offset_for_non_ref_pic
int context_reinitialized
void ff_h264_reset_sei(H264Context *h)
Reset SEI values at the beginning of the frame.
int gaps_in_frame_num_allowed_flag
int luma_weight[48][2][2]
int bit_depth_chroma
bit_depth_chroma_minus8 + 8
int ff_h264_alloc_tables(H264Context *h)
Allocate tables.
enum AVColorPrimaries color_primaries
struct MMCO MMCO
Memory management control operation.
av_cold void ff_h264_decode_init_vlc(void)
DCTELEM mb[16 *48 *2]
as a dct coeffecient is int32_t in high depth, we need to reserve twice the space.
Picture ref_list[2][48]
0..15: frame refs, 16..47: mbaff field refs.
int cabac
entropy_coding_mode_flag
unsigned int ref_count[2]
num_ref_idx_l0/1_active_minus1 + 1
unsigned int crop_right
frame_cropping_rect_right_offset
SEI_PicStructType
pic_struct in picture timing SEI message
Picture current_picture
copy of the current picture structure.
Context for storing H.264 prediction functions.
void ff_h264_fill_mbaff_ref_list(H264Context *h)
int transform_bypass
qpprime_y_zero_transform_bypass_flag
uint8_t chroma_qp_table[2][64]
pre-scaled (with chroma_qp_index_offset) version of qp_table
int redundant_pic_cnt_present
redundant_pic_cnt_present_flag
#define MAX_DELAYED_PIC_COUNT
SEI_Type
SEI message types.
Picture * next_output_pic
const uint8_t ff_h264_chroma_qp[3][QP_MAX_NUM+1]
One chroma qp table for each supported bit depth (8, 9, 10).
int luma_log2_weight_denom
uint8_t direct_cache[5 *8]
int chroma_weight[48][2][2][2]
int last_pocs[MAX_DELAYED_PIC_COUNT]
struct PPS PPS
Picture parameter set.
#define MAX_SLICES
The maximum number of slices supported by the decoder.
const uint8_t * zigzag_scan8x8_cavlc_q0
int got_first
this flag is != 0 if we've parsed a frame
enum AVColorTransferCharacteristic color_trc
int mb_aff
mb_adaptive_frame_field_flag
const uint8_t * zigzag_scan_q0
int poc_type
pic_order_cnt_type
int constrained_intra_pred
constrained_intra_pred_flag
void ff_h264_direct_ref_list_init(H264Context *const h)
static av_always_inline int get_chroma_qp(H264Context *h, int t, int qscale)
Get the chroma qp.
const uint8_t * left_block
GetBitContext * inter_gb_ptr
Picture * delayed_pic[MAX_DELAYED_PIC_COUNT+2]
int mb_field_decoding_flag
uint8_t(*[2] mvd_table)[2]
int prev_interlaced_frame
Complement sei_pic_struct SEI_PIC_STRUCT_TOP_BOTTOM and SEI_PIC_STRUCT_BOTTOM_TOP indicate interlaced...
int direct_spatial_mv_pred
int weighted_pred
weighted_pred_flag
int ff_h264_decode_mb_cavlc(H264Context *h)
Decode a macroblock.
int residual_color_transform_flag
residual_colour_transform_flag
uint8_t * list_counts
Array of list_count per MB specifying the slice type.
int delta_pic_order_always_zero_flag
int map_col_to_list0[2][16+32]
int offset_for_top_to_bottom_field
uint8_t zigzag_scan8x8[64]
static const uint8_t scan8[16 *3+3]
const uint16_t ff_h264_mb_sizes[4]
int crop
frame_cropping_flag
uint8_t scaling_matrix8[6][64]
int nal_length_size
Number of bytes used for nal length (1, 2 or 4)
useful rectangle filling function
static av_always_inline void write_back_motion_list(H264Context *h, MpegEncContext *const s, int b_stride, int b_xy, int b8_xy, int mb_type, int list)
void ff_h264_pred_direct_motion(H264Context *const h, int *mb_type)
unsigned int left_samples_available
Context for storing H.264 DSP functions.
int ref_frame_count
num_ref_frames
void ff_h264_filter_mb(H264Context *h, int mb_x, int mb_y, uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr, unsigned int linesize, unsigned int uvlinesize)
int frame_num_offset
for POC type 2
int initial_cpb_removal_delay_length
initial_cpb_removal_delay_length_minus1 + 1
av_cold int ff_h264_decode_init(AVCodecContext *avctx)
uint16_t * slice_table
slice_table_base + 2*mb_stride + 1
uint8_t field_scan8x8_cavlc[64]
int poc_cycle_length
num_ref_frames_in_pic_order_cnt_cycle
int colour_description_present_flag
int long_ref_count
number of actual long term references
PPS * pps_buffers[MAX_PPS_COUNT]
uint8_t mvd_cache[2][5 *8][2]
static void fill_rectangle(SDL_Surface *screen, int x, int y, int w, int h, int color)
int ff_h264_decode_picture_parameter_set(H264Context *h, int bit_length)
Decode PPS.
int dist_scale_factor[32]
int init_qp
pic_init_qp_minus26 + 26
int direct_8x8_inference_flag
int8_t intra4x4_pred_mode_cache[5 *8]
uint8_t * bipred_scratchpad
int max_pic_num
max_frame_num or 2 * max_frame_num for field pics.
int ff_generate_sliding_window_mmcos(H264Context *h, int first_slice)
unsigned int topright_samples_available
uint8_t scaling_matrix8[6][64]
const uint8_t * zigzag_scan8x8_q0
int curr_pic_num
frame_num for frames or 2 * frame_num + 1 for field pics.
static av_always_inline void write_back_non_zero_count(H264Context *h)
uint32_t dequant4_buffer[6][QP_MAX_NUM+1][16]
int dequant_coeff_pps
reinit tables when pps changes
int pic_order_present
pic_order_present_flag
DCTELEM 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 lar...
SPS * sps_buffers[MAX_SPS_COUNT]
struct H264Context * thread_context[MAX_THREADS]
int chroma_log2_weight_denom
short offset_for_ref_frame[256]
int timing_info_present_flag
int ff_h264_execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count)
Execute the reference picture marking (memory management control operations).
int vcl_hrd_parameters_present_flag
int slice_alpha_c0_offset
void ff_h264_remove_all_refs(H264Context *h)
int prev_frame_num
frame_num of the last pic for POC type 1/2
int ff_h264_decode_sei(H264Context *h)
Decode SEI.
int implicit_weight[48][48][2]
int max_contexts
Max number of threads / contexts.
main external API structure.
int dpb_output_delay_length
dpb_output_delay_length_minus1 + 1
int vui_parameters_present_flag
AVColorTransferCharacteristic
int16_t(*[2] motion_val)[2]
motion vector table
int constraint_set_flags
constraint_set[0-3]_flag
SEI_PicStructType sei_pic_struct
pic_struct in picture timing SEI message
const uint8_t * field_scan8x8_cavlc_q0
uint32_t(*[6] dequant8_coeff)[64]
int qp_thresh
QP threshold to skip loopfilter.
rational number numerator/denominator
int pixel_shift
0 for 8-bit H264, 1 for high-bit-depth H264
int ff_h264_decode_ref_pic_marking(H264Context *h, GetBitContext *gb, int first_slice)
int8_t * ref_index[2]
motion reference frame index the order in which these are stored can depend on the codec...
struct SPS SPS
Sequence parameter set.
buffering period (H.264, D.1.1)
int log2_max_poc_lsb
log2_max_pic_order_cnt_lsb_minus4
6: bottom field, top field, bottom field repeated, in that order
int sei_buffering_period_present
Buffering period SEI flag.
int block_offset[2 *(16 *3)]
block_offset[ 0..23] for frame macroblocks block_offset[24..47] for field macroblocks ...
int transform_8x8_mode
transform_8x8_mode_flag
H.264 / AVC / MPEG4 prediction functions.
int pic_struct_present_flag
#define DECLARE_ALIGNED(n, t, v)
void ff_h264_filter_mb_fast(H264Context *h, int mb_x, int mb_y, uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr, unsigned int linesize, unsigned int uvlinesize)
struct AVCodecContext * avctx
int mb_height
pic_height_in_map_units_minus1 + 1
int init_qs
pic_init_qs_minus26 + 26
int dist_scale_factor_field[2][32]
int nal_hrd_parameters_present_flag
uint16_t * slice_table_base
int log2_max_frame_num
log2_max_frame_num_minus4 + 4
int cur_chroma_format_idc
const uint8_t * ff_h264_decode_nal(H264Context *h, const uint8_t *src, int *dst_length, int *consumed, int length)
Decode a network abstraction layer unit.
int long_arg
index, pic_num, or num long refs depending on opcode
int sei_ct_type
Bit set of clock types for fields/frames in picture timing SEI message.
int bit_depth_luma
bit_depth_luma_minus8 + 8
static av_always_inline void write_back_intra_pred_mode(H264Context *h)
int ff_h264_frame_start(H264Context *h)
int prev_poc_lsb
poc_lsb of the last reference pic for POC type 0
uint8_t non_zero_count_cache[15 *8]
non zero coeff count cache.
uint8_t(*[2] top_borders)[(16 *3)*2]
int current_slice
current slice number, used to initalize slice_num of each thread/context
int mb_width
pic_width_in_mbs_minus1 + 1
int slice_group_count
num_slice_groups_minus1 + 1
int cpb_cnt
See H.264 E.1.2.
const uint8_t * field_scan_q0
int ff_h264_fill_default_ref_list(H264Context *h)
Fill the default_ref_list.
int ff_h264_get_profile(SPS *sps)
compute profile from sps
uint8_t field_scan8x8[64]
int chroma_weight_flag[2]
7.4.3.2 chroma_weight_lX_flag
int8_t * intra4x4_pred_mode
int mb_linesize
may be equal to s->linesize or s->linesize * 2, for mbaff
int cpb_removal_delay_length
cpb_removal_delay_length_minus1 + 1
int deblocking_filter
disable_deblocking_filter_idc with 1 <-> 0
int map_col_to_list0_field[2][2][16+32]
uint8_t(* non_zero_count)[48]
unsigned int crop_bottom
frame_cropping_rect_bottom_offset
int ff_h264_check_intra_pred_mode(H264Context *h, int mode, int is_chroma)
Check if the top & left blocks are available if needed & change the dc mode so it only uses the avail...
int sei_recovery_frame_cnt
recovery_frame_cnt from SEI message
void ff_h264_hl_decode_mb(H264Context *h)
int sei_dpb_output_delay
dpb_output_delay in picture timing SEI message, see H.264 C.2.2
unsigned int rbsp_buffer_size[2]
recovery point (frame # to decoder sync)
Context Adaptive Binary Arithmetic Coder.
int neighbor_transform_size
number of neighbors (top and/or left) that used 8x8 dct
int8_t ref_cache[2][5 *8]
int mb_mbaff
mb_aff_frame && mb_field_decoding_flag
int short_ref_count
number of actual short term references
int mb_slice_group_map_type
enum AVColorSpace colorspace