40 #define MAX_LOG2_MAX_FRAME_NUM (12 + 4)
41 #define MIN_LOG2_MAX_FRAME_NUM 4
63 #define QP(qP,depth) ( (qP)+6*((depth)-8) )
65 #define CHROMA_QP_TABLE_END(d) \
66 QP(0,d), QP(1,d), QP(2,d), QP(3,d), QP(4,d), QP(5,d),\
67 QP(6,d), QP(7,d), QP(8,d), QP(9,d), QP(10,d), QP(11,d),\
68 QP(12,d), QP(13,d), QP(14,d), QP(15,d), QP(16,d), QP(17,d),\
69 QP(18,d), QP(19,d), QP(20,d), QP(21,d), QP(22,d), QP(23,d),\
70 QP(24,d), QP(25,d), QP(26,d), QP(27,d), QP(28,d), QP(29,d),\
71 QP(29,d), QP(30,d), QP(31,d), QP(32,d), QP(32,d), QP(33,d),\
72 QP(34,d), QP(34,d), QP(35,d), QP(35,d), QP(36,d), QP(36,d),\
73 QP(37,d), QP(37,d), QP(37,d), QP(38,d), QP(38,d), QP(38,d),\
74 QP(39,d), QP(39,d), QP(39,d), QP(39,d)
104 { 6,10,13,16,18,23,25,27,
105 10,11,16,18,23,25,27,29,
106 13,16,18,23,25,27,29,31,
107 16,18,23,25,27,29,31,33,
108 18,23,25,27,29,31,33,36,
109 23,25,27,29,31,33,36,38,
110 25,27,29,31,33,36,38,40,
111 27,29,31,33,36,38,40,42
113 9,13,15,17,19,21,22,24,
114 13,13,17,19,21,22,24,25,
115 15,17,19,21,22,24,25,27,
116 17,19,21,22,24,25,27,28,
117 19,21,22,24,25,27,28,30,
118 21,22,24,25,27,28,30,32,
119 22,24,25,27,28,30,32,33,
120 24,25,27,28,30,32,33,35
135 for(i=0; i<cpb_count; i++){
150 int aspect_ratio_info_present_flag;
151 unsigned int aspect_ratio_idc;
155 if( aspect_ratio_info_present_flag ) {
161 sps->
sar= pixel_aspect[aspect_ratio_idc];
256 int i, last = 8, next = 8;
259 memcpy(factors, fallback_list, size*
sizeof(
uint8_t));
265 memcpy(factors, jvt_list, size*
sizeof(
uint8_t));
268 last = factors[scan[i]] = next ? next : last;
307 int profile_idc, level_idc, constraint_set_flags = 0;
309 int i, log2_max_frame_num_minus4;
364 "log2_max_frame_num_minus4 out of range (0-12): %d\n",
365 log2_max_frame_num_minus4);
400 if((
unsigned)sps->
mb_width >= INT_MAX/16 || (
unsigned)sps->
mb_height >= INT_MAX/16 ||
418 #ifndef ALLOW_INTERLACE
452 static const char csp[4][5] = {
"Gray",
"420",
"422",
"444" };
485 const int max_qp = 51 + 6*(depth-8);
486 for(i = 0; i < max_qp+1; i++)
523 |
for( i = 0; i <= num_slice_groups_minus1; i++ ) | | |
524 | run_length[ i ] |1 |ue(v) |
529 |
for( i = 0; i < num_slice_groups_minus1; i++ ) | | |
531 | top_left_mb[ i ] |1 |ue(v) |
532 | bottom_right_mb[ i ] |1 |ue(v) |
540 | slice_group_change_direction_flag |1 |u(1) |
541 | slice_group_change_rate_minus1 |1 |ue(v) |
546 | slice_group_id_cnt_minus1 |1 |ue(v) |
547 |
for( i = 0; i <= slice_group_id_cnt_minus1; i++ | | |
549 | slice_group_id[ i ] |1 |u(v) |
576 if (bits_left && (bits_left > 8 ||
577 show_bits(&s->
gb, bits_left) != 1 << (bits_left - 1))) {
593 pps->
cabac ?
"CABAC" :
"CAVLC",
#define MAX_LOG2_MAX_FRAME_NUM
int video_signal_type_present_flag
#define MAX_PICTURE_COUNT
const uint8_t ff_zigzag_direct[64]
static int get_se_golomb(GetBitContext *gb)
read signed exp golomb code.
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
int chroma_qp_index_offset[2]
int scaling_matrix_present
uint8_t scaling_matrix4[6][16]
int bitstream_restriction_flag
unsigned int ref_count[2]
num_ref_idx_l0/1_active_minus1 + 1
uint32_t num_units_in_tick
static const AVRational pixel_aspect[17]
unsigned current_sps_id
id of the current SPS
static const uint8_t zigzag_scan[16]
unsigned int crop_top
frame_cropping_rect_top_offset
int fixed_frame_rate_flag
uint8_t scaling_matrix4[6][16]
int deblocking_filter_parameters_present
deblocking_filter_parameters_present_flag
unsigned int crop_left
frame_cropping_rect_left_offset
int offset_for_non_ref_pic
int gaps_in_frame_num_allowed_flag
int bit_depth_chroma
bit_depth_chroma_minus8 + 8
enum AVColorPrimaries color_primaries
int cabac
entropy_coding_mode_flag
unsigned int crop_right
frame_cropping_rect_right_offset
int transform_bypass
qpprime_y_zero_transform_bypass_flag
static int get_bits_count(const GetBitContext *s)
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
static void decode_scaling_matrices(H264Context *h, SPS *sps, PPS *pps, int is_sps, uint8_t(*scaling_matrix4)[16], uint8_t(*scaling_matrix8)[64])
enum AVChromaLocation chroma_sample_location
This defines the location of chroma samples.
H.264 / AVC / MPEG4 part10 codec.
static int get_bits_left(GetBitContext *gb)
int mb_aff
mb_adaptive_frame_field_flag
enum AVColorTransferCharacteristic color_trc
void av_free(void *ptr)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc(). ...
static int get_ue_golomb(GetBitContext *gb)
read unsigned exp golomb code.
int poc_type
pic_order_cnt_type
int constrained_intra_pred
constrained_intra_pred_flag
#define FF_DEBUG_PICT_INFO
int weighted_pred
weighted_pred_flag
void av_log(void *avcl, int level, const char *fmt,...)
#define MIN_LOG2_MAX_FRAME_NUM
int residual_color_transform_flag
residual_colour_transform_flag
int delta_pic_order_always_zero_flag
int new
flag to keep track if the decoder context needs re-init due to changed SPS
int offset_for_top_to_bottom_field
#define CHROMA_QP_TABLE_END(d)
int crop
frame_cropping_flag
static int decode_hrd_parameters(H264Context *h, SPS *sps)
uint8_t scaling_matrix8[6][64]
int av_image_check_size(unsigned int w, unsigned int h, int log_offset, void *log_ctx)
Check if the given dimension of an image is valid, meaning that all bytes of the image can be address...
int ref_frame_count
num_ref_frames
int initial_cpb_removal_delay_length
initial_cpb_removal_delay_length_minus1 + 1
int poc_cycle_length
num_ref_frames_in_pic_order_cnt_cycle
int colour_description_present_flag
PPS * pps_buffers[MAX_PPS_COUNT]
static unsigned int show_bits(GetBitContext *s, int n)
Show 1-25 bits.
int init_qp
pic_init_qp_minus26 + 26
int direct_8x8_inference_flag
uint8_t scaling_matrix8[6][64]
int dequant_coeff_pps
reinit tables when pps changes
static unsigned get_ue_golomb_long(GetBitContext *gb)
Read an unsigned Exp-Golomb code in the range 0 to UINT32_MAX-1.
int pic_order_present
pic_order_present_flag
SPS * sps_buffers[MAX_SPS_COUNT]
short offset_for_ref_frame[256]
int timing_info_present_flag
int vcl_hrd_parameters_present_flag
H264 / AVC / MPEG4 part10 codec data table
static int get_ue_golomb_31(GetBitContext *gb)
read unsigned exp golomb code, constraint to a max of 31.
int dpb_output_delay_length
dpb_output_delay_length_minus1 + 1
int vui_parameters_present_flag
static int decode_vui_parameters(H264Context *h, SPS *sps)
int ff_h264_decode_seq_parameter_set(H264Context *h)
Decode SPS.
int constraint_set_flags
constraint_set[0-3]_flag
static unsigned int get_bits1(GetBitContext *s)
#define FF_ARRAY_ELEMS(a)
rational number numerator/denominator
int log2_max_poc_lsb
log2_max_pic_order_cnt_lsb_minus4
static unsigned int get_bits_long(GetBitContext *s, int n)
Read 0-32 bits.
int transform_8x8_mode
transform_8x8_mode_flag
int pic_struct_present_flag
int ff_h264_decode_picture_parameter_set(H264Context *h, int bit_length)
Decode PPS.
struct AVCodecContext * avctx
int mb_height
pic_height_in_map_units_minus1 + 1
int init_qs
pic_init_qs_minus26 + 26
common internal api header.
int nal_hrd_parameters_present_flag
int log2_max_frame_num
log2_max_frame_num_minus4 + 4
static const uint8_t default_scaling4[2][16]
#define AVERROR_INVALIDDATA
#define AVERROR_PATCHWELCOME
int bit_depth_luma
bit_depth_luma_minus8 + 8
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 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.
static void decode_scaling_list(H264Context *h, uint8_t *factors, int size, const uint8_t *jvt_list, const uint8_t *fallback_list)
static const uint8_t default_scaling8[2][64]
int cpb_removal_delay_length
cpb_removal_delay_length_minus1 + 1
unsigned int crop_bottom
frame_cropping_rect_bottom_offset
void * av_mallocz(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
static void build_qp_table(PPS *pps, int t, int index, const int depth)
int mb_slice_group_map_type
enum AVColorSpace colorspace