#include <stdint.h>
#include "libavutil/common.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/avassert.h"
#include "defs.h"
#include "mathops.h"
#include "vlc.h"

Data Structures
struct	GetBitContext

Macros
#define	UNCHECKED_BITSTREAM_READER !CONFIG_SAFE_BITSTREAM_READER

#define	CACHED_BITSTREAM_READER 0

#define	MIN_CACHE_BITS 25

#define	OPEN_READER_NOSIZE(name, gb)

#define	OPEN_READER(name, gb) OPEN_READER_NOSIZE(name, gb)

#define	BITS_AVAILABLE(name, gb) 1

#define	CLOSE_READER(name, gb) (gb)->index = name ## _index

#define	UPDATE_CACHE_BE_EXT(name, gb, bits, dst_bits)

#define	UPDATE_CACHE_LE_EXT(name, gb, bits, dst_bits)

#define	UPDATE_CACHE_LE_32(name, gb) UPDATE_CACHE_LE_EXT(name, (gb), 64, 32)

#define	UPDATE_CACHE_BE_32(name, gb) UPDATE_CACHE_BE_EXT(name, (gb), 64, 32)

#define	UPDATE_CACHE_LE(name, gb) UPDATE_CACHE_LE_EXT(name, (gb), 32, 32)

#define	UPDATE_CACHE_BE(name, gb) UPDATE_CACHE_BE_EXT(name, (gb), 32, 32)

#define	UPDATE_CACHE(name, gb) UPDATE_CACHE_BE(name, gb)

#define	UPDATE_CACHE_32(name, gb) UPDATE_CACHE_BE_32(name, (gb))

#define	SKIP_CACHE(name, gb, num) name ## _cache <<= (num)

#define	SKIP_COUNTER(name, gb, num) name ## _index += (num)

#define	BITS_LEFT(name, gb) ((int)((gb)->size_in_bits - name ## _index))

#define	SKIP_BITS(name, gb, num)

#define	LAST_SKIP_BITS(name, gb, num) SKIP_COUNTER(name, gb, num)

#define	SHOW_UBITS_LE(name, gb, num) zero_extend(name ## _cache, num)

#define	SHOW_SBITS_LE(name, gb, num) sign_extend(name ## _cache, num)

#define	SHOW_UBITS_BE(name, gb, num) NEG_USR32(name ## _cache, num)

#define	SHOW_SBITS_BE(name, gb, num) NEG_SSR32(name ## _cache, num)

#define	SHOW_UBITS(name, gb, num) SHOW_UBITS_BE(name, gb, num)

#define	SHOW_SBITS(name, gb, num) SHOW_SBITS_BE(name, gb, num)

#define	GET_CACHE(name, gb) ((uint32_t) name ## _cache)

#define	GET_VLC(code, name, gb, table, bits, max_depth)
	If the vlc code is invalid and max_depth=1, then no bits will be removed. More...

#define	GET_RL_VLC(level, run, name, gb, table, bits, max_depth, need_update)

Functions
static unsigned int	get_bits (GetBitContext *s, int n)
	Read 1-25 bits. More...

static void	skip_bits (GetBitContext *s, int n)

static unsigned int	show_bits (GetBitContext *s, int n)
	Show 1-25 bits. More...

static int	get_bits_count (const GetBitContext *s)

static void	skip_bits_long (GetBitContext *s, int n)
	Skips the specified number of bits. More...

static int	get_xbits (GetBitContext *s, int n)
	Read MPEG-1 dc-style VLC (sign bit + mantissa with no MSB). More...

static int	get_xbits_le (GetBitContext *s, int n)

static int	get_sbits (GetBitContext *s, int n)

static av_always_inline int	get_bitsz (GetBitContext *s, int n)
	Read 0-25 bits. More...

static unsigned int	get_bits_le (GetBitContext *s, int n)

static unsigned int	get_bits1 (GetBitContext *s)

static unsigned int	show_bits1 (GetBitContext *s)

static void	skip_bits1 (GetBitContext *s)

static unsigned int	get_bits_long (GetBitContext *s, int n)
	Read 0-32 bits. More...

static uint64_t	get_bits64 (GetBitContext *s, int n)
	Read 0-64 bits. More...

static int	get_sbits_long (GetBitContext *s, int n)
	Read 0-32 bits as a signed integer. More...

static int64_t	get_sbits64 (GetBitContext *s, int n)
	Read 0-64 bits as a signed integer. More...

static unsigned int	show_bits_long (GetBitContext *s, int n)
	Show 0-32 bits. More...

static int	init_get_bits (GetBitContext s, const uint8_t buffer, int bit_size)
	Initialize GetBitContext. More...

static int	init_get_bits8 (GetBitContext s, const uint8_t buffer, int byte_size)
	Initialize GetBitContext. More...

static int	init_get_bits8_le (GetBitContext s, const uint8_t buffer, int byte_size)

static const uint8_t *	align_get_bits (GetBitContext *s)

static av_always_inline int	get_vlc2 (GetBitContext s, const VLCElem table, int bits, int max_depth)
	Parse a vlc code. More...

static int	get_vlc_multi (GetBitContext s, uint8_t dst, const VLC_MULTI_ELEM const Jtable, const VLCElem const table, const int bits, const int max_depth, const int symbols_size)

static int	decode012 (GetBitContext *gb)

static int	decode210 (GetBitContext *gb)

static int	get_bits_left (GetBitContext *gb)

static int	skip_1stop_8data_bits (GetBitContext *gb)

Detailed Description

bitstream reader API header.

Definition in file get_bits.h.

Macro Definition Documentation

◆ UNCHECKED_BITSTREAM_READER

#define UNCHECKED_BITSTREAM_READER !CONFIG_SAFE_BITSTREAM_READER

Definition at line 53 of file get_bits.h.

◆ CACHED_BITSTREAM_READER

#define CACHED_BITSTREAM_READER 0

Definition at line 57 of file get_bits.h.

◆ MIN_CACHE_BITS

#define MIN_CACHE_BITS 25

Definition at line 169 of file get_bits.h.

◆ OPEN_READER_NOSIZE

#define OPEN_READER_NOSIZE	(	name,
		gb
	)

Value:

unsigned int name ## _index = (gb)->index; \

unsigned int av_unused name ## _cache

Definition at line 172 of file get_bits.h.

◆ OPEN_READER

#define OPEN_READER	(	name,
		gb
	)	OPEN_READER_NOSIZE(name, gb)

Definition at line 177 of file get_bits.h.

◆ BITS_AVAILABLE

#define BITS_AVAILABLE	(	name,
		gb
	)	1

Definition at line 179 of file get_bits.h.

◆ CLOSE_READER

#define CLOSE_READER	(	name,
		gb
	)	(gb)->index = name ## _index

Definition at line 188 of file get_bits.h.

◆ UPDATE_CACHE_BE_EXT

#define UPDATE_CACHE_BE_EXT	(	name,
		gb,
		bits,
		dst_bits
	)

Value:

name ## _cache = \

AV_RB ## bits((gb)->buffer + (name ## _index >> 3)) << (name ## _index & 7) >> (bits - dst_bits)

Definition at line 190 of file get_bits.h.

◆ UPDATE_CACHE_LE_EXT

#define UPDATE_CACHE_LE_EXT	(	name,
		gb,
		bits,
		dst_bits
	)

Value:

name ## _cache = \

(uint ## dst_bits ## _t)(AV_RL ## bits((gb)->buffer + (name ## _index >> 3)) >> (name ## _index & 7))

Definition at line 193 of file get_bits.h.

◆ UPDATE_CACHE_LE_32

#define UPDATE_CACHE_LE_32	(	name,
		gb
	)	UPDATE_CACHE_LE_EXT(name, (gb), 64, 32)

Definition at line 197 of file get_bits.h.

◆ UPDATE_CACHE_BE_32

#define UPDATE_CACHE_BE_32	(	name,
		gb
	)	UPDATE_CACHE_BE_EXT(name, (gb), 64, 32)

Definition at line 199 of file get_bits.h.

◆ UPDATE_CACHE_LE

#define UPDATE_CACHE_LE	(	name,
		gb
	)	UPDATE_CACHE_LE_EXT(name, (gb), 32, 32)

Definition at line 209 of file get_bits.h.

◆ UPDATE_CACHE_BE

#define UPDATE_CACHE_BE	(	name,
		gb
	)	UPDATE_CACHE_BE_EXT(name, (gb), 32, 32)

Definition at line 211 of file get_bits.h.

◆ UPDATE_CACHE

#define UPDATE_CACHE	(	name,
		gb
	)	UPDATE_CACHE_BE(name, gb)

Definition at line 225 of file get_bits.h.

◆ UPDATE_CACHE_32

#define UPDATE_CACHE_32	(	name,
		gb
	)	UPDATE_CACHE_BE_32(name, (gb))

Definition at line 226 of file get_bits.h.

◆ SKIP_CACHE

#define SKIP_CACHE	(	name,
		gb,
		num
	)	name ## _cache <<= (num)

Definition at line 228 of file get_bits.h.

◆ SKIP_COUNTER

#define SKIP_COUNTER	(	name,
		gb,
		num
	)	name ## _index += (num)

Definition at line 233 of file get_bits.h.

◆ BITS_LEFT

#define BITS_LEFT	(	name,
		gb
	)	((int)((gb)->size_in_bits - name ## _index))

Definition at line 239 of file get_bits.h.

◆ SKIP_BITS

#define SKIP_BITS	(	name,
		gb,
		num
	)

Value:

    do {                                        \
        SKIP_CACHE(name, gb, num);              \
        SKIP_COUNTER(name, gb, num);            \
    } while (0)

Definition at line 241 of file get_bits.h.

◆ LAST_SKIP_BITS

#define LAST_SKIP_BITS	(	name,
		gb,
		num
	)	SKIP_COUNTER(name, gb, num)

Definition at line 247 of file get_bits.h.

◆ SHOW_UBITS_LE

#define SHOW_UBITS_LE	(	name,
		gb,
		num
	)	zero_extend(name ## _cache, num)

Definition at line 249 of file get_bits.h.

◆ SHOW_SBITS_LE

#define SHOW_SBITS_LE	(	name,
		gb,
		num
	)	sign_extend(name ## _cache, num)

Definition at line 250 of file get_bits.h.

◆ SHOW_UBITS_BE

#define SHOW_UBITS_BE	(	name,
		gb,
		num
	)	NEG_USR32(name ## _cache, num)

Definition at line 252 of file get_bits.h.

◆ SHOW_SBITS_BE

#define SHOW_SBITS_BE	(	name,
		gb,
		num
	)	NEG_SSR32(name ## _cache, num)

Definition at line 253 of file get_bits.h.

◆ SHOW_UBITS

#define SHOW_UBITS	(	name,
		gb,
		num
	)	SHOW_UBITS_BE(name, gb, num)

Definition at line 259 of file get_bits.h.

◆ SHOW_SBITS

#define SHOW_SBITS	(	name,
		gb,
		num
	)	SHOW_SBITS_BE(name, gb, num)

Definition at line 260 of file get_bits.h.

◆ GET_CACHE

#define GET_CACHE	(	name,
		gb
	)	((uint32_t) name ## _cache)

Definition at line 263 of file get_bits.h.

◆ GET_VLC

#define GET_VLC	(	code,
		name,
		gb,
		table,
		bits,
		max_depth
	)

Value:

    do {                                                        \
        int n, nb_bits;                                         \
        unsigned int index;                                     \
                                                                \
        index = SHOW_UBITS(name, gb, bits);                     \
        code  = table[index].sym;                               \
        n     = table[index].len;                               \
                                                                \
        if (max_depth > 1 && n < 0) {                           \
            LAST_SKIP_BITS(name, gb, bits);                     \
            UPDATE_CACHE(name, gb);                             \
                                                                \
            nb_bits = -n;                                       \
                                                                \
            index = SHOW_UBITS(name, gb, nb_bits) + code;       \
            code  = table[index].sym;                           \
            n     = table[index].len;                           \
            if (max_depth > 2 && n < 0) {                       \
                LAST_SKIP_BITS(name, gb, nb_bits);              \
                UPDATE_CACHE(name, gb);                         \
                                                                \
                nb_bits = -n;                                   \
                                                                \
                index = SHOW_UBITS(name, gb, nb_bits) + code;   \
                code  = table[index].sym;                       \
                n     = table[index].len;                       \
            }                                                   \
        }                                                       \
        SKIP_BITS(name, gb, n);                                 \
    } while (0)

If the vlc code is invalid and max_depth=1, then no bits will be removed.

If the vlc code is invalid and max_depth>1, then the number of bits removed is undefined.

Definition at line 574 of file get_bits.h.

◆ GET_RL_VLC

#define GET_RL_VLC	(	level,
		run,
		name,
		gb,
		table,
		bits,
		max_depth,
		need_update
	)

Definition at line 606 of file get_bits.h.

Function Documentation

◆ get_bits()

static unsigned int get_bits	(	GetBitContext *	s,
		int	n
	)

inlinestatic

Read 1-25 bits.

Definition at line 335 of file get_bits.h.

Referenced by aac_adtstoasc_filter(), aac_decode_frame_int(), ac3_decode_transform_coeffs_ch(), ac3_parse_header(), ac_get(), ac_init(), ac_read_model(), add_coefficients(), adpcm_swf_decode(), adts_decode_extradata(), aic_decode_coeffs(), alac_decode_frame(), apcm_dequant_add(), ape_decode_value_3860(), apply_color_indexing_transform(), arith_init(), asv1_decode_block(), at1_parse_bsm(), at1_unpack_dequant(), atrac3p_decode_frame(), atrac9_decode_block(), atrac9_decode_init(), av_dynamic_hdr_plus_from_t35(), aw_parse_coords(), aw_pulse_set1(), aw_pulse_set2(), bink_decode_plane(), binkb_decode_plane(), binkb_read_bundle(), bit_copy(), bonk_decode(), cbs_av1_get_payload_bytes_left(), cbs_av1_read_leb128(), cbs_av1_read_ns(), cbs_vp8_bool_decoder_fill_value(), cbs_vp9_read_le(), cbs_vp9_read_s(), check_for_slice(), chs_parse_band_data(), chs_parse_header(), colour_mapping_octants(), colour_mapping_table(), copy_bits(), coupling_coordinates(), coupling_strategy(), cri_decode_frame(), dca_parse_params(), decode(), decode2x2(), decode4x4(), decode8x8(), decode_0cpy(), decode_1dif(), decode_2slp(), decode_5elp(), decode_ac_filter(), decode_argb(), decode_argbi(), decode_argx(), decode_argxi(), decode_audio_block(), decode_aybr(), decode_aybri(), decode_band_hdr(), decode_band_numwavs(), decode_band_types(), decode_block(), decode_blocks(), decode_byry(), decode_byryi(), decode_c82i(), decode_c82p(), decode_ca2i(), decode_ca2p(), decode_ca4i(), decode_ca4p(), decode_cce(), decode_cdlms(), decode_channel(), decode_channel_code_tab(), decode_channel_map(), decode_channel_residues(), decode_channel_sf_idx(), decode_channel_sound_unit(), decode_channel_wordlen(), decode_chunks(), decode_coeff(), decode_coeffs(), decode_cpe(), decode_decorrelation_matrix(), decode_display_orientation(), decode_dynamic_range(), decode_eld_specific_config(), decode_element(), decode_entropy_coded_image(), decode_envelope(), decode_exp_lsp(), decode_exp_vlc(), decode_exponents(), decode_ext_header(), decode_extension_payload(), decode_fill(), decode_film_grain_characteristics(), decode_frame(), decode_frame_header(), decode_frame_packing_arrangement(), decode_ga_specific_config(), decode_gain_control(), decode_gain_info(), decode_gainc_data(), decode_gainc_levels(), decode_gainc_loc_codes(), decode_gainc_npoints(), decode_gop_header(), decode_group3_2d_line(), decode_hq_slice(), decode_hrd(), decode_hrd_parameters(), decode_huff(), decode_huffman2(), decode_ics(), decode_ics_info(), decode_inter(), decode_intra(), decode_line(), decode_lowdelay_slice(), decode_lpc(), decode_lt_rps(), decode_ltp(), decode_macroblock(), decode_mb(), decode_mb_b(), decode_mb_i(), decode_mb_info(), decode_mclms(), decode_motion(), decode_nal_sei_active_parameter_sets(), decode_nal_sei_pic_timing(), decode_nal_sei_timecode(), decode_new_pred(), decode_packet(), decode_palmapdata(), decode_parameters(), decode_pce(), decode_pic(), decode_pic_hdr(), decode_plane_bitstream(), decode_plane_subdivision(), decode_prediction(), decode_profile_tier_level(), decode_pulses(), decode_residual(), decode_residuals(), decode_residues(), decode_rgb(), decode_rgbi(), decode_rgbx(), decode_rgbxi(), decode_rle(), decode_run_2bit(), decode_run_8bit(), decode_scale_factors(), decode_scalefactors(), decode_segment(), decode_seq_header(), decode_sequence_header_adv(), decode_skip_count(), decode_slice(), decode_slice_header(), decode_spectrum(), decode_studio_vol_header(), decode_studio_vop_header(), decode_studiovisualobject(), decode_subframe(), decode_subframe_length(), decode_subframe_lpc(), decode_subframe_lpc_33bps(), decode_sym(), decode_sym_565(), decode_tiledata(), decode_tns(), decode_tonal_components(), decode_tones_amplitude(), decode_tones_envelope(), decode_tones_frequency(), decode_tones_phase(), decode_user_data(), decode_vbmtree(), decode_vectors(), decode_vol_header(), decode_vop_header(), decode_ybr(), decode_ybr10(), decode_ybr10i(), decode_ybri(), decode_ybyr(), decode_yry10(), decode_yry10i(), decode_yuv_frame(), decorrelate(), decouple_info(), delta_dlt(), dequant_lsp10i(), dequant_lsp10r(), dequant_lsp16i(), dequant_lsp16r(), dnxhd_decode_macroblock(), do_output_subblock(), dss_sp_unpack_coeffs(), dts_probe(), dv_decode_video_segment(), dvbsub_read_2bit_string(), dvbsub_read_4bit_string(), encode_picture_ls(), escape124_decode_frame(), escape130_decode_frame(), evcc_parse_sps(), extend_code(), extension_and_user_data(), ff_adts_header_parse(), ff_aom_parse_film_grain_sets(), ff_atrac3p_decode_channel_unit(), ff_av1_parse_seq_header(), ff_avc_decode_sps(), ff_bgmc_decode_init(), ff_dca_exss_parse(), ff_dca_parse_core_frame_header(), ff_dolby_e_parse_header(), ff_dovi_rpu_parse(), ff_dxva2_mpeg2_fill_slice(), ff_eac3_decode_transform_coeffs_aht_ch(), ff_eac3_parse_header(), ff_evc_parse_pps(), ff_evc_parse_slice_header(), ff_evc_parse_sps(), ff_flac_decode_frame_header(), ff_flac_parse_streaminfo(), ff_flv_decode_picture_header(), ff_h263_decode_mba(), ff_h263_decode_motion(), ff_h263_decode_picture_header(), ff_h263_resync(), ff_h2645_decode_common_vui_params(), ff_h264_decode_mb_cavlc(), ff_h264_decode_picture_parameter_set(), ff_h264_decode_seq_parameter_set(), ff_h264_sei_process_picture_timing(), ff_hevc_decode_nal_pps(), ff_hevc_decode_nal_vps(), ff_hevc_parse_sps(), ff_hls_senc_parse_audio_setup_info(), ff_iamf_parse_obu_header(), ff_intel_h263_decode_picture_header(), ff_ivi_dec_huff_desc(), ff_ivi_decode_frame(), ff_jpegls_decode_lse(), ff_jpegxl_parse_codestream_header(), ff_mjpeg_decode_dht(), ff_mjpeg_decode_dqt(), ff_mjpeg_decode_sof(), ff_mjpeg_decode_sos(), ff_mlp_read_major_sync(), ff_mpeg4_decode_partitions(), ff_mpeg4_decode_picture_header(), ff_mpeg4_decode_studio_slice_header(), ff_mpeg4_decode_video_packet_header(), ff_mpeg4audio_get_config_gb(), ff_msmpeg4_decode_ext_header(), ff_msmpeg4_decode_motion(), ff_msmpeg4_decode_picture_header(), ff_opus_rc_dec_init(), ff_parse_a53_cc(), ff_parse_itu_t_t35_to_dynamic_hdr_vivid(), ff_pce_copy_bits(), ff_rtp_send_h263_rfc2190(), ff_tak_decode_frame_header(), ff_vc1_decode_entry_point(), ff_vc1_decode_sequence_header(), ff_vc1_parse_frame_header(), ff_vc1_parse_frame_header_adv(), ff_wma_run_level_decode(), ff_wmv2_decode_picture_header(), fic_decode_block(), fill_block(), flashsv_decode_frame(), frame_header_is_valid(), frame_header_obu(), g722_decode_frame(), gainc_loc_mode0(), gainc_loc_mode1(), gb_get_v(), generate_fake_vps(), get_array(), get_bits_esc4(), get_bits_long(), get_bitsz(), get_block(), get_code(), get_coeff(), get_coeff_bits(), get_dimension(), get_eob_run(), get_float(), get_leb(), get_leb128(), get_mvdata_interlaced(), get_num_ct_values(), get_object_type(), get_prediction(), get_rice_ook(), get_sample_rate(), get_sbits_inv(), get_scale_idx(), get_ue_code(), get_utf8(), get_value_cached(), get_variable_bits(), gsm_decode_block(), gsm_decode_frame(), h261_decode_block(), h261_decode_gob_header(), h261_decode_mb(), h261_decode_picture_header(), h261_handle_packet(), h263_decode_block(), h263_decode_dquant(), h263_decode_gob_header(), h263_get_modb(), h263_handle_packet(), h264_parse_nal_header(), h264_probe(), h264_slice_header_parse(), handle_eac3(), handle_rstn(), hevc_parse_nal_header(), hevc_parse_slice_header(), hl_decode_mb(), hl_decode_mb_444(), hls_slice_header(), horizontal_fill(), hq_decode_block(), hq_decode_mb(), hqx_decode_422(), hqx_decode_422a(), hqx_decode_444(), hqx_decode_444a(), hrd_parameters(), huf_decode(), huf_unpack_enc_table(), hvcc_parse_ptl(), hvcc_parse_sps(), hvcc_parse_vps(), hvcc_parse_vui(), idx_to_quant(), imc_decode_block(), imc_get_coeffs(), imc_read_level_coeffs(), imc_read_level_coeffs_raw(), intlist_read(), ipu_decode_frame(), ipvideo_decode_format_11_opcodes(), ivi_dec_tile_data_size(), jpegxl_read_preview_header(), jpegxl_read_size_header(), jxl_u32(), jxl_u64(), jxl_u8(), k23(), k24(), k34(), k35(), k44(), k45(), kempf_restore_buf(), latm_decode_audio_specific_config(), latm_decode_frame(), latm_get_value(), linear(), load_matrix(), ls_decode_line(), lsp_unquant_high(), lsp_unquant_lbr(), lsp_unquant_nb(), magy_decode_slice10(), message(), metasound_read_bitstream(), mjpeg_decode_app(), mjpeg_decode_com(), mjpeg_decode_dri(), mobiclip_decode(), mono_decode(), mov_read_ddts(), mov_write_dvc1_structs(), mp_decode_frame(), mp_decode_layer1(), mp_decode_layer2(), mp_decode_layer3(), mp_read_changes_map(), mp_read_codes_table(), mpc7_decode_frame(), mpc7_decode_init(), mpc8_decode_frame(), mpc8_decode_init(), mpc8_parse_seektable(), mpeg1_decode_picture(), mpeg1_decode_sequence(), mpeg4_decode_dc(), mpeg4_decode_dpcm_macroblock(), mpeg4_decode_gop_header(), mpeg4_decode_mb(), mpeg4_decode_partition_a(), mpeg4_decode_partition_b(), mpeg4_decode_profile_level(), mpeg4_decode_studio_block(), mpeg4_decode_visual_object(), mpeg4_is_resync(), mpeg_decode_a53_cc(), mpeg_decode_gop(), mpeg_decode_mb(), mpeg_decode_motion(), mpeg_decode_picture_coding_extension(), mpeg_decode_sequence_display_extension(), mpeg_decode_sequence_extension(), mpeg_get_qscale(), msmpeg4_decode_dc(), msmpeg4v2_decode_motion(), mss2_decode_frame(), mss4_decode_image_block(), nal_unit_parse_header(), nb_decode(), nelly_decode_block(), next_start_code_studio(), num_coded_units(), on2avc_decode_band_scales(), on2avc_decode_band_types(), on2avc_decode_subframe(), opus_rc_dec_normalize(), parse(), parse_aux_data(), parse_avs2_seq_header(), parse_avs3_nal_units(), parse_band_ext(), parse_bintree(), parse_bit_alloc(), parse_bitstream(), parse_block_codes(), parse_ch(), parse_channel(), parse_coding_header(), parse_color_config(), parse_common_header(), parse_config_ALS(), parse_descriptor(), parse_dmix_coeffs(), parse_fmtp_config(), parse_frame_header(), parse_gradient(), parse_grid_1_chunk(), parse_high_res_grid(), parse_indices(), parse_joint_scale(), parse_lbr_parameters(), parse_lfe_16(), parse_lfe_24(), parse_lpc(), parse_mb_skip(), parse_nal_unit(), parse_nal_units(), parse_obu_header(), parse_packet_header(), parse_ptl(), parse_scale(), parse_sequence_header(), parse_setup_header(), parse_subframe_audio(), parse_subframe_header(), parse_tonal(), parse_tonal_chunk(), parse_transform_color_indexing(), parse_ts(), parse_vlc(), parse_x96_coding_header(), parse_x96_frame(), parse_x96_frame_exss(), parse_x96_subframe_audio(), parse_x96_subframe_header(), parse_xbr_frame(), parse_xbr_subframe(), parse_xll_parameters(), parse_xxch_frame(), payload_extension(), pcx_decode_frame(), populate_distribution(), pps_3d_extension(), pps_multilayer_extension(), pps_scc_extension(), process_subpacket_11(), put_pcm(), qcelp_decode_frame(), qdm2_decode_fft_packets(), qdm2_decode_sub_packet_header(), qdm2_decode_super_block(), qdm2_fft_decode_tones(), qdm2_get_vlc(), qdmc_get_vlc(), qt_rtp_parse_packet(), ra144_decode_frame(), ra288_decode_frame(), read_access_unit(), read_ans_symbol(), read_audio_mux_element(), read_bfraction(), read_block_data(), read_block_types(), read_cb_data(), read_channel_data(), read_channel_params(), read_code(), read_code_table(), read_coeffs_coarse(), read_coeffs_fine(), read_colorspace_details(), read_dcs(), read_dct_coeffs(), read_decoding_params(), read_diff_float_data(), read_dist_clustering(), read_distribution_bundle(), read_filter_params(), read_header(), read_high_coeffs(), read_huffman_code_normal(), read_huffman_code_simple(), read_huffman_tree(), read_len_table(), read_low_coeffs(), read_map(), read_matrix_params(), read_motion_values(), read_payload_length_info(), read_quant_matrix_ext(), read_quant_spectral_coeffs(), read_residue(), read_restart_header(), read_runs(), read_sbr_data(), read_sbr_envelope(), read_sbr_grid(), read_sbr_header(), read_sbr_invf(), read_sbr_noise(), read_scalefactors(), read_simple_vlc_prefix(), read_sl_header(), read_specific_config(), read_stream_mux_config(), read_table(), read_tree(), read_uncoded_coeff(), read_var_block_data(), read_vec_pos(), read_vlc_prefix(), read_wave_data(), ref_pic_list_struct(), rv10_decode_picture_header(), rv20_decode_picture_header(), rv30_parse_slice_header(), rv34_decode_inter_mb_header(), rv34_decode_intra_mb_header(), rv40_parse_slice_header(), save_bits(), sb_decode(), seq_decode_op1(), seqvideo_decode(), siren_decode(), skip_data_stream_element(), skip_hdr_extension(), skip_label(), smacker_decode_header_tree(), smacker_decode_tree(), smka_decode_frame(), speex_default_user_handler(), speex_inband_handler(), speex_std_stereo(), spx_coordinates(), spx_strategy(), svq1_decode_frame(), svq1_decode_frame_header(), svq1_parse_string(), svq3_decode_init(), svq3_decode_slice_header(), swf_probe(), synth_block_fcb_acb(), synth_block_hardcoded(), synth_frame(), synth_superframe(), synthfilt_build_sb_samples(), t15(), t27(), t37(), tak_decode_frame(), tak_parse_streaminfo(), tak_read_header(), tgq_decode_block(), tgv_decode_inter(), theora_header(), tm2_build_huff_table(), tm2_read_deltas(), truehd_core_filter(), truemotion2rt_decode_frame(), truespeech_read_frame(), tscc2_decode_mb(), tta_decode_frame(), tta_decode_init(), twinvq_read_bitstream(), unbias_exponents(), unpack(), unpack_alpha(), unpack_bitstream(), unpack_block_qpis(), unpack_codebook(), unpack_dct_coeffs(), unpack_frame(), unpack_gray(), unpack_modes(), unpack_superblocks(), unpack_vectors(), update_extradata(), vaapi_mpeg2_decode_slice(), vble_restore_plane(), vc1_decode_ac_coeff(), vc1_decode_frame(), vc1_decode_i_block(), vc1_decode_i_block_adv(), vc1_decode_intra_block(), vlc_decode_block(), vop_dquant_decoding(), vorbis_decode_init(), vorbis_floor0_decode(), vorbis_floor1_decode(), vorbis_parse_audio_packet(), vorbis_parse_id_hdr(), vorbis_parse_setup_hdr(), vorbis_parse_setup_hdr_codebooks(), vorbis_parse_setup_hdr_floors(), vorbis_parse_setup_hdr_mappings(), vorbis_parse_setup_hdr_modes(), vorbis_parse_setup_hdr_residues(), vorbis_parse_setup_hdr_tdtransforms(), vp3_decode_frame(), vp6_get_nb_null(), vp6_parse_coeff_huffman(), vp8_lossless_decode_frame(), vp9_raw_reorder_frame_parse(), vp9_superframe_filter(), vp9_superframe_split_filter(), vui_parameters(), vvc_parse_nal_header(), vvcc_parse_ptl(), vvcc_parse_sps(), vvcc_parse_vps(), wma_decode_block(), wma_decode_superframe(), wnv1_get_code(), wv_get_value_float(), x8_get_ac_rlf(), x8_get_dc_rlf(), x8_get_orient_vlc(), and x8_select_ac_table().

◆ skip_bits()

static void skip_bits	(	GetBitContext *	s,
		int	n
	)

inlinestatic

Definition at line 381 of file get_bits.h.

Referenced by aac_decode_er_frame(), ac3_parse_header(), aic_decode_coeffs(), al_decode_frame(), align_get_bits(), apac_decode(), apply_color_indexing_transform(), at1_parse_bsm(), bitline2chunky(), bitplanar2chunky(), bonk_decode(), cabac_init_decoder(), dca_parse_params(), decode_argb_frame(), decode_audio_block(), decode_band_hdr(), decode_block(), decode_buffering_period(), decode_dynamic_range(), decode_element(), decode_frame(), decode_frame_header(), decode_frame_packing_arrangement(), decode_ga_specific_config(), decode_gain_control(), decode_gop_header(), decode_group3_1d_line(), decode_huff(), decode_inter(), decode_packet(), decode_pce(), decode_pic(), decode_pic_hdr(), decode_profile_tier_level(), decode_recovery_point(), decode_residual(), decode_rgb24_frame(), decode_scalar(), decode_seq_header(), decode_sequence_header_adv(), decode_slice(), decode_smpte_tc(), decode_studio_vol_header(), decode_studio_vop_header(), decode_studiovisualobject(), decode_uncompressed(), decode_vectors(), decode_vol_header(), decode_vop_header(), decode_yuv_frame(), delta_dlt(), ep_init_cabac_decoder(), extension_data(), extra_information(), ff_adts_header_parse(), ff_aom_parse_film_grain_sets(), ff_av1_parse_seq_header(), ff_avc_decode_sps(), ff_dca_exss_parse(), ff_dca_parse_core_frame_header(), ff_decode_sbr_extension(), ff_dolby_e_parse_header(), ff_dovi_rpu_parse(), ff_eac3_parse_header(), ff_flac_decode_frame_header(), ff_flac_parse_streaminfo(), ff_h263_decode_picture_header(), ff_h263_resync(), ff_h264_decode_seq_parameter_set(), ff_h264_sei_process_picture_timing(), ff_hevc_decode_nal_pps(), ff_hevc_decode_nal_vps(), ff_hevc_parse_sps(), ff_hls_senc_parse_audio_setup_info(), ff_intel_h263_decode_picture_header(), ff_jpegls_decode_picture(), ff_mjpeg_decode_frame_from_buf(), ff_mjpeg_decode_sos(), ff_mlp_read_major_sync(), ff_mpeg4_decode_partitions(), ff_mpeg4_decode_picture_header(), ff_mpeg4_decode_studio_slice_header(), ff_mpeg4_decode_video_packet_header(), ff_mpeg4audio_get_config_gb(), ff_msmpeg4_decode_ext_header(), ff_msmpeg4_decode_picture_header(), ff_parse_a53_cc(), ff_rtp_send_h263_rfc2190(), ff_tak_decode_frame_header(), ff_vc1_decode_entry_point(), ff_vc1_decode_sequence_header(), ff_vc1_parse_frame_header(), ff_vc1_parse_frame_header_adv(), flashsv_decode_frame(), g722_decode_frame(), get_bits_align32(), get_interleaved_se_golomb(), h261_decode_block(), h261_decode_gob_header(), h261_decode_picture_header(), h261_handle_packet(), h261_resync(), h263_decode_gob_header(), h263_handle_packet(), h264_probe(), handle_eac3(), handle_rstn(), hevc_parse_slice_header(), hls_slice_header(), hqx_get_ac(), hvcc_parse_pps(), hvcc_parse_ptl(), hvcc_parse_sps(), hvcc_parse_vps(), hvcc_parse_vui(), ljpeg_decode_rgb_scan(), ljpeg_decode_yuv_scan(), metasound_read_bitstream(), mjpeg_decode_app(), mjpegb_decode_frame(), mov_read_ddts(), mov_write_dvc1_structs(), mp_decode_layer3(), mpc8_decode_frame(), mpc8_decode_init(), mpeg1_decode_sequence(), mpeg4_decode_visual_object(), mpeg4_is_resync(), mpeg_decode_a53_cc(), mpeg_decode_picture_display_extension(), mpeg_decode_sequence_display_extension(), mpeg_decode_sequence_extension(), mpeg_decode_slice(), mss2_decode_frame(), mxpeg_decode_app(), mxpeg_decode_com(), nal_unit_parse_header(), parse_adts_frame_header(), parse_aux_data(), parse_avs2_seq_header(), parse_avs3_nal_units(), parse_band_ext(), parse_coding_header(), parse_descriptor(), parse_fmtp_config(), parse_frame_header(), parse_lbr_parameters(), parse_nal_unit(), parse_navi_table(), parse_obu_header(), parse_packet_header(), parse_ptl(), parse_sequence_header(), parse_setup_header(), parse_subframe_header(), parse_x96_coding_header(), parse_x96_subframe_header(), parse_xll_parameters(), preview_obmc(), qdm2_decode_super_block(), qt_rtp_parse_packet(), read_access_unit(), read_block_data(), read_code(), read_const_block_data(), read_header(), read_high_coeffs(), read_low_coeffs(), read_payload_length_info(), read_restart_header(), read_sbr_channel_pair_element(), read_sbr_data(), read_sbr_header(), read_sbr_single_channel_element(), read_sl_header(), read_specific_config(), read_stream_mux_config(), relative_align_get_bits(), rv10_decode_picture_header(), rv20_decode_picture_header(), save_bits(), shorten_decode_frame(), siren_decode(), skip_1stop_8data_bits(), skip_bits1(), skip_hdr_extension(), skip_hrd_parameters(), svq1_decode_frame(), svq1_decode_frame_header(), svq3_decode_slice_header(), synth_block_fcb_acb(), synth_superframe(), tak_decode_frame(), tak_parse_streaminfo(), tgq_decode_block(), theora_header(), truemotion2rt_decode_frame(), twinvq_read_bitstream(), update_extradata(), vaapi_mpeg2_decode_slice(), vble_unpack(), vorbis_parse_setup_hdr_mappings(), vp3_decode_frame(), vp9_raw_reorder_frame_parse(), vvcc_parse_ptl(), vvcc_parse_sps(), vvcc_parse_vps(), wavarc_decode(), wma_decode_superframe(), and wmavoice_decode_packet().

◆ show_bits()

static unsigned int show_bits	(	GetBitContext *	s,
		int	n
	)

inlinestatic

Show 1-25 bits.

Definition at line 371 of file get_bits.h.

Referenced by aac_decode_frame_int(), al_decode_frame(), cbs_h2645_read_more_rbsp_data(), cbs_h265_payload_extension_present(), check_for_slice(), check_slice_end(), decode_frame(), decode_group3_1d_line(), decode_huff(), decode_packet(), decode_pic(), decode_residual(), decode_scalar(), decode_slice(), decode_uncompressed(), decode_user_data(), decode_vectors(), decode_vop_header(), decode_vui(), ff_ccitt_unpack(), ff_h263_decode_mb(), ff_h263_decode_picture_header(), ff_h263_resync(), ff_ivi_decode_frame(), ff_mjpeg_decode_sos(), ff_mpeg4_decode_partitions(), ff_mpeg4_decode_picture_header(), ff_mpeg4audio_get_config_gb(), ff_msmpeg4_decode_block(), ff_wmv2_decode_picture_header(), filler(), get_interleaved_se_golomb(), h261_decode_block(), h261_decode_gob_header(), h261_resync(), h263_decode_gob_header(), handle_rstn(), hqx_get_ac(), latm_decode_frame(), main(), message_list(), mjpeg_decode_app(), mjpegb_decode_frame(), mpeg1_decode_sequence(), mpeg4_decode_gop_header(), mpeg4_decode_partition_a(), mpeg4_decode_studio_mb(), mpeg4_is_resync(), mpeg_decode_slice(), msmpeg4v34_decode_mb(), next_start_code_studio(), read_code(), read_high_coeffs(), read_low_coeffs(), read_sbr_extension(), rv10_decode_packet(), rv10_decode_picture_header(), show_bits1(), show_bits_long(), speex_decode_frame(), svq3_decode_frame(), svq3_decode_slice_header(), tgq_decode_block(), vble_unpack(), and wmv2_decode_mb().

◆ get_bits_count()

static int get_bits_count ( const GetBitContext * s )

inlinestatic

Definition at line 266 of file get_bits.h.

Referenced by aac_adtstoasc_filter(), aac_decode_frame(), aac_decode_frame_int(), adpcm_swf_decode(), alac_decode_frame(), align_get_bits(), apac_decode(), bink_decode_plane(), binkb_decode_plane(), bonk_decode(), cabac_init_decoder(), categorize(), cbs_av1_read_unit(), cbs_av1_ref_tile_data(), cbs_av1_split_fragment(), cbs_h264_read_nal_unit(), cbs_h265_read_nal_unit(), cbs_h266_read_nal_unit(), cbs_jpeg_read_unit(), cbs_mpeg2_read_unit(), cbs_vp8_read_unit(), cbs_vp9_read_unit(), cfhd_decode(), check_for_slice(), check_marker(), chs_parse_header(), cook_decode_frame(), decode_5elp(), decode_audio_specific_config_gb(), decode_band(), decode_component(), decode_envelope(), decode_frame(), decode_frame_header(), decode_hq_slice(), decode_huff(), decode_line(), decode_lowdelay(), decode_lowdelay_slice(), decode_motion_vectors(), decode_packet(), decode_rle(), decode_slice(), decode_subband(), decode_subframe(), decode_user_data(), decode_vol_header(), dvbsub_read_2bit_string(), dvbsub_read_4bit_string(), encode_picture_ls(), ep_init_cabac_decoder(), escape124_decode_frame(), escape130_decode_frame(), ff_aom_parse_film_grain_sets(), ff_cbs_trace_read_log(), ff_dca_seek_bits(), ff_dirac_init_arith_decoder(), ff_dxva2_mpeg2_fill_slice(), ff_dxva2_vc1_fill_slice(), ff_flac_decode_frame_header(), ff_h263_resync(), ff_h264_decode_picture_parameter_set(), ff_h264_sei_decode(), ff_hevc_decode_nal_sei(), ff_iamf_parse_obu_header(), ff_ivi_decode_frame(), ff_jpegxl_parse_codestream_header(), ff_lag_rac_init(), ff_mjpeg_decode_frame_from_buf(), ff_mjpeg_decode_sos(), ff_mlp_read_major_sync(), ff_mpeg4_decode_picture_header(), ff_mpeg4_decode_video_packet_header(), ff_mpeg4_frame_end(), ff_mpeg4audio_get_config_gb(), ff_msmpeg4_decode_ext_header(), ff_rtjpeg_decode_frame_yuv420(), fill_slice_long(), find_group3_syncmarker(), flac_decode_frame(), flashsv_decode_block(), flashsv_decode_frame(), frame_header_obu(), ftr_decode_frame(), get_bits_align32(), get_bits_left(), get_consumed_bytes(), handle_rstn(), huf_unpack_enc_table(), huffman_decode(), imc_decode_block(), imc_get_coeffs(), latm_decode_audio_specific_config(), loco_decode_plane(), message_list(), metasound_read_bitstream(), mp_decode_frame(), mp_decode_layer2(), mp_decode_layer3(), mpc7_decode_frame(), mpc8_decode_frame(), mpeg4_is_resync(), mpeg_decode_slice(), mss2_decode_frame(), mxpeg_decode_frame(), osq_receive_frame(), parse_aux_data(), parse_band_data(), parse_bintree(), parse_coding_header(), parse_descriptor(), parse_frame(), parse_frame_header(), parse_navi_table(), parse_obu_header(), parse_optional_info(), parse_setup_header(), parse_x96_coding_header(), parse_x96_frame_exss(), parse_xbr_frame(), parse_xxch_frame(), ps_read_extension_data(), qdm2_decode_sub_packet_header(), qdm2_decode_super_block(), qt_rtp_parse_packet(), read_access_unit(), read_block_data(), read_high_coeffs(), read_huffman_tables(), read_low_coeffs(), read_restart_header(), read_sbr_data(), read_sbr_header(), read_sl_header(), relative_align_get_bits(), remaining_bits(), rv10_decode_packet(), save_bits(), SEI_FUNC(), send_picture(), seq_unpack_rle_block(), shorten_decode_frame(), speex_decode_frame(), svq3_decode_frame(), svq3_decode_init(), switch_buffer(), tak_decode_frame(), tak_parse(), tm2_read_stream(), truehd_core_filter(), try_parse(), twinvq_read_bitstream(), unpack_SQVH(), vaapi_h264_decode_slice(), vaapi_hevc_decode_slice(), vaapi_mpeg2_decode_slice(), vaapi_mpeg4_decode_slice(), vaapi_vc1_decode_slice(), vc1_decode_b_blocks(), vc1_decode_frame(), vc1_decode_i_blocks(), vc1_decode_i_blocks_adv(), vc1_decode_init(), vc1_decode_p_blocks(), vorbis_decode_frame(), vorbis_floor1_decode(), wavarc_decode(), wma_decode_superframe(), and wmavoice_decode_packet().

◆ skip_bits_long()

static void skip_bits_long	(	GetBitContext *	s,
		int	n
	)

inlinestatic

Skips the specified number of bits.

Parameters

n	the number of bits to skip, For the UNCHECKED_BITSTREAM_READER this must not cause the distance from the start to overflow int32_t. Staying within the bitstream + padding is sufficient, too.

Definition at line 278 of file get_bits.h.

Referenced by aac_decode_er_frame(), adts_decode_extradata(), ape_decode_frame(), bink_decode_plane(), binkaudio_receive_frame(), binkb_decode_plane(), cbs_read_se_golomb(), cbs_read_ue_golomb(), check_for_slice(), dca_parse_params(), decode_5elp(), decode_audio_block(), decode_audio_specific_config_gb(), decode_component(), decode_eld_specific_config(), decode_extension_payload(), decode_fill(), decode_frame(), decode_hq_slice(), decode_inter(), decode_intra(), decode_lowdelay_slice(), decode_mvdv(), decode_pce(), decode_pic_hdr(), decode_profile_tier_level(), decode_subframe(), decode_vol_header(), decode_vop_header(), dequantize_coefficients(), dts_probe(), ensure_bits(), escape130_decode_frame(), extension_and_user_data(), ff_bgmc_decode_end(), ff_cbs_trace_write_log(), ff_dca_core_parse_exss(), ff_dca_exss_parse(), ff_dca_seek_bits(), ff_decode_sbr_extension(), ff_dirac_init_arith_decoder(), ff_dolby_e_parse_header(), ff_eac3_parse_header(), ff_evc_parse_sps(), ff_flac_parse_streaminfo(), ff_h264_decode_mb_cavlc(), ff_iamf_parse_obu_header(), ff_ivi_decode_frame(), ff_jpegxl_parse_codestream_header(), ff_mlp_read_major_sync(), flashsv_decode_block(), ftr_decode_frame(), get_interleaved_se_golomb(), get_interleaved_ue_golomb(), get_se_golomb(), get_ue_golomb(), get_ue_golomb_31(), get_ue_golomb_long(), get_ur_golomb(), get_ur_golomb_jpegls(), handle_rstn(), huffman_decode(), hvcc_parse_ptl(), hvcc_parse_vui(), jpegxl_get_bit_depth(), jpegxl_read_extra_channel_info(), jpegxl_skip_extensions(), kempf_restore_buf(), latm_decode_audio_specific_config(), latm_write_frame_header(), message(), message_list(), mov_read_ddts(), mov_write_dvc1_structs(), mp_decode_layer3(), mpc7_decode_frame(), mpc7_decode_init(), nb_decode(), nelly_decode_block(), parse_aux_data(), parse_band_data(), parse_band_ext(), parse_config_ALS(), parse_descriptor(), parse_frame(), parse_frame_header(), parse_optional_info(), parse_sequence_header(), parse_setup_header(), payload_extension(), read_diff_float_data(), read_frame_data(), read_sbr_extension(), read_sl_header(), read_specific_config(), save_bits(), skip_data_stream_element(), skip_extensions(), skip_timing_info(), speex_default_user_handler(), speex_inband_handler(), svq3_decode_slice_header(), switch_buffer(), theora_header(), try_parse(), tta_decode_frame(), tta_decode_init(), uvlc(), vp3_decode_frame(), vvcc_parse_sps(), and wmavoice_decode_packet().

◆ get_xbits()

static int get_xbits	(	GetBitContext *	s,
		int	n
	)

inlinestatic

Read MPEG-1 dc-style VLC (sign bit + mantissa with no MSB).

if MSB not set it is negative

Parameters

n	length in bits

Definition at line 292 of file get_bits.h.

Referenced by decode_block(), decode_dc(), decode_i_block(), jpg_decode_block(), mjpeg_decode_dc(), mpeg4_decode_dc(), mpeg4_decode_sprite_trajectory(), and mpeg4_decode_studio_block().

◆ get_xbits_le()

static int get_xbits_le	(	GetBitContext *	s,
		int	n
	)

inlinestatic

Definition at line 306 of file get_bits.h.

Referenced by decode_dc_le().

◆ get_sbits()

static int get_sbits	(	GetBitContext *	s,
		int	n
	)

inlinestatic

Definition at line 320 of file get_bits.h.

Referenced by ac3_decode_transform_coeffs_ch(), add_coefficients(), adpcm_swf_decode(), adx_decode(), asv1_get_level(), at1_unpack_dequant(), decode_block(), decode_block_intra(), decode_channel(), decode_element(), decode_frame(), decode_lpc(), decode_subframe(), decode_subframe_lpc(), decode_subframe_lpc_33bps(), decode_tile(), decode_vectors(), decorrelate(), dv_decode_video_segment(), ff_dovi_rpu_parse(), ff_eac3_decode_transform_coeffs_aht_ch(), ff_h263_decode_picture_header(), get_array(), get_block(), hq_decode_block(), mdec_decode_block_intra(), mpeg_decode_picture_display_extension(), parse_mantissas(), read_channel_params(), read_decoding_params(), read_filter_params(), read_matrix_params(), read_quant_spectral_coeffs(), read_uncoded_coeff(), seq_unpack_rle_block(), tak_decode_frame(), tgq_decode_block(), and tgv_decode_inter().

◆ get_bitsz()

static av_always_inline int get_bitsz	(	GetBitContext *	s,
		int	n
	)

static

◆ get_bits_le()

static unsigned int get_bits_le	(	GetBitContext *	s,
		int	n
	)

inlinestatic

Definition at line 356 of file get_bits.h.

Referenced by adpcm_ima_wav_expand_nibble(), asv2_decode_block(), asv2_get_level(), cbs_vp8_read_unsigned_le(), decode_frame(), decode_inter(), decode_intra(), and decode_plane().

◆ get_bits1()

static unsigned int get_bits1 ( GetBitContext * s )

inlinestatic

Definition at line 388 of file get_bits.h.

Referenced by ac3_parse_header(), ac_normalize(), add_coefficients(), aic_decode_coeffs(), arith_normalise(), atrac3p_decode_frame(), atrac9_decode_block(), atrac9_decode_init(), av_dynamic_hdr_plus_from_t35(), avs_decode_frame(), aw_pulse_set2(), bink_decode_plane(), binkb_decode_plane(), bitline2chunky(), bitplanar2chunky(), bitplane_decoding(), cbs_av1_read_increment(), cbs_av1_read_ns(), cbs_av1_read_uvlc(), cbs_vp9_read_increment(), cbs_vp9_read_s(), check_marker(), chs_parse_band_data(), chs_parse_header(), clv_decode_frame(), codeblock(), colour_mapping_octants(), coupling_coordinates(), coupling_strategy(), decode(), decode012(), decode210(), decode2x2(), decode4x4(), decode8x8(), decode_1dif(), decode_2slp(), decode_5elp(), decode_argb(), decode_argbi(), decode_argx(), decode_argxi(), decode_audio_block(), decode_aybr(), decode_aybri(), decode_band(), decode_band_hdr(), decode_band_structure(), decode_block(), decode_byry(), decode_byryi(), decode_c82i(), decode_c82p(), decode_ca2i(), decode_ca2p(), decode_ca4i(), decode_ca4p(), decode_cce(), decode_cdlms(), decode_channel_code_tab(), decode_channel_map(), decode_channel_residues(), decode_channel_transform(), decode_channel_wordlen(), decode_code_table_indexes(), decode_coeff(), decode_coeffs(), decode_colskip(), decode_cpe(), decode_decorrelation_matrix(), decode_display_orientation(), decode_drc_channel_exclusions(), decode_dynamic_range(), decode_eld_specific_config(), decode_element(), decode_entropy_coded_image(), decode_envelope(), decode_ext_header(), decode_film_grain_characteristics(), decode_frame(), decode_frame_header(), decode_frame_packing_arrangement(), decode_ga_specific_config(), decode_gain_info(), decode_gainc_data(), decode_gainc_levels(), decode_gainc_loc_codes(), decode_gop_header(), decode_header_trees(), decode_hrd(), decode_hrd_parameters(), decode_ics(), decode_ics_info(), decode_inter(), decode_intra(), decode_line(), decode_lt_rps(), decode_ltp(), decode_macroblock(), decode_mb(), decode_mb_i(), decode_mb_info(), decode_mb_p(), decode_mclms(), decode_mid_side_stereo(), decode_motion(), decode_mv_component(), decode_mvdv(), decode_new_pred(), decode_packet(), decode_palette(), decode_pce(), decode_pic(), decode_pic_hdr(), decode_prediction(), decode_profile_tier_level(), decode_qu_spectra(), decode_residual(), decode_residues(), decode_rgb(), decode_rgbi(), decode_rgbx(), decode_rgbxi(), decode_rice(), decode_rle(), decode_rowskip(), decode_run_8bit(), decode_scale_factors(), decode_scaling_list(), decode_segment(), decode_seq_header(), decode_sequence_header_adv(), decode_skip_count(), decode_slice_header(), decode_spectrum(), decode_studio_vol_header(), decode_studio_vop_header(), decode_subframe(), decode_subframe_length(), decode_sublayer_hrd(), decode_tilehdr(), decode_tns(), decode_tonal_components(), decode_tones_envelope(), decode_tones_frequency(), decode_tones_info(), decode_uncompressed(), decode_vector(), decode_vol_header(), decode_vop_header(), decode_vui(), decode_vui_parameters(), decode_ybr(), decode_ybr10(), decode_ybr10i(), decode_ybri(), decode_ybyr(), decode_yry10(), decode_yry10i(), decorrelate(), decouple_info(), dirac_get_se_golomb(), dirac_unpack_idwt_params(), dirac_unpack_prediction_parameters(), dnxhd_decode_macroblock(), dts_probe(), dv_decode_video_segment(), dvbsub_read_2bit_string(), dvbsub_read_4bit_string(), escape124_decode_frame(), escape130_decode_frame(), ff_adts_header_parse(), ff_aom_parse_film_grain_sets(), ff_atrac3p_decode_channel_unit(), ff_avc_decode_sps(), ff_bgmc_decode(), ff_cbs_trace_read_log(), ff_ccitt_unpack(), ff_dca_exss_parse(), ff_dca_parse_core_frame_header(), ff_decode_sbr_extension(), ff_dovi_rpu_parse(), ff_eac3_decode_transform_coeffs_aht_ch(), ff_eac3_parse_header(), ff_evc_parse_pps(), ff_evc_parse_slice_header(), ff_evc_parse_sps(), ff_flac_decode_frame_header(), ff_h263_decode_mb(), ff_h263_decode_motion(), ff_h263_decode_picture_header(), ff_h2645_decode_common_vui_params(), ff_h264_decode_mb_cavlc(), ff_h264_decode_picture_parameter_set(), ff_h264_decode_ref_pic_list_reordering(), ff_h264_decode_ref_pic_marking(), ff_h264_decode_seq_parameter_set(), ff_h264_parse_ref_count(), ff_h264_pred_weight_table(), ff_hevc_decode_nal_pps(), ff_hevc_decode_nal_vps(), ff_hevc_decode_short_term_rps(), ff_hevc_parse_sps(), ff_iamf_parse_obu_header(), ff_intel_h263_decode_picture_header(), ff_intrax8_decode_picture(), ff_jpegxl_parse_codestream_header(), ff_mlp_read_major_sync(), ff_mpeg4_decode_studio_slice_header(), ff_mpeg4_decode_video_packet_header(), ff_mpeg4audio_get_config_gb(), ff_msmpeg4_decode_ext_header(), ff_msmpeg4_decode_picture_header(), ff_ps_read_data(), ff_vc1_decode_entry_point(), ff_vc1_decode_sequence_header(), ff_vc1_parse_frame_header(), ff_vc1_parse_frame_header_adv(), ff_vc1_pred_b_mv(), ff_vc1_pred_mv(), ff_wma_get_large_val(), ff_wma_run_level_decode(), ff_wmv2_decode_picture_header(), ff_wmv2_decode_secondary_picture_header(), fic_decode_block(), find_group3_syncmarker(), flashsv_decode_frame(), frame_header_is_valid(), gb_get_v(), get_bits1_vector(), get_bits_esc4(), get_code(), get_dimension(), get_dmv(), get_egolomb(), get_float(), get_num_ct_values(), get_prediction(), get_sbits_inv(), get_sr_golomb_dst(), get_srice(), get_subband_flags(), get_tail(), get_te0_golomb(), get_te_golomb(), get_ue_golomb(), get_unary(), get_ur_golomb_jpegls(), get_value_cached(), get_variable_bits(), h261_decode_picture_header(), h263_decode_dquant(), h263_decode_gob_header(), h263_get_modb(), h263p_decode_umotion(), h264_parse_nal_header(), h264_slice_header_parse(), handle_eac3(), hcom_decode(), hevc_parse_nal_header(), hevc_parse_slice_header(), hls_slice_header(), hq_decode_mb(), hqa_decode_mb(), hqx_decode_422(), hqx_decode_422a(), hqx_decode_444(), hqx_decode_444a(), huff_reader_get_symbol(), huffman_decode(), hvcc_parse_pps(), hvcc_parse_ptl(), hvcc_parse_sps(), hvcc_parse_vui(), idx_to_quant(), imc_decode_block(), imc_get_skip_coeff(), init_tone_level_dequantization(), input_code(), intlist_read(), ipu_decode_frame(), ivi_dec_tile_data_size(), jpegxl_get_bit_depth(), jpegxl_read_extra_channel_info(), jpegxl_read_preview_header(), jpegxl_read_size_header(), jxl_u64(), jxl_u8(), k12(), k13(), k23(), k24(), k34(), k35(), k44(), k45(), ls_decode_line(), merge(), metasound_read_bitstream(), mjpeg_decode_scan(), mobiclip_decode(), mov_write_dvc1_structs(), mp_decode_layer3(), mp_get_code(), mpc7_decode_frame(), mpc7_decode_init(), mpc8_dec_base(), mpc8_decode_frame(), mpc8_decode_init(), mpeg1_decode_picture(), mpeg1_decode_sequence(), mpeg4_decode_dc(), mpeg4_decode_mb(), mpeg4_decode_partition_a(), mpeg4_decode_partition_b(), mpeg4_decode_studio_mb(), mpeg4_decode_visual_object(), mpeg4_is_resync(), mpeg_decode_gop(), mpeg_decode_mb(), mpeg_decode_motion(), mpeg_decode_picture_coding_extension(), mpeg_decode_quant_matrix_extension(), mpeg_decode_sequence_display_extension(), mpeg_decode_sequence_extension(), msmpeg4_decode_dc(), msmpeg4v12_decode_mb(), msmpeg4v2_decode_motion(), msmpeg4v34_decode_mb(), mss2_decode_frame(), mss4_decode_image_block(), nb_decode(), on2avc_decode_subframe(), on2avc_read_ms_info(), osq_decode_block(), parse(), parse_aux_data(), parse_band_ext(), parse_bit_alloc(), parse_bitstream(), parse_ch(), parse_coding_header(), parse_color_config(), parse_common_header(), parse_descriptor(), parse_exponents(), parse_frame_header(), parse_grid_2(), parse_indices(), parse_lbr_parameters(), parse_mb_skip(), parse_nal_unit(), parse_nal_units(), parse_obu_header(), parse_packet_header(), parse_ptl(), parse_rps(), parse_sequence_header(), parse_setup_header(), parse_subframe_header(), parse_tonal(), parse_x96_coding_header(), parse_x96_frame_exss(), parse_x96_subframe_header(), parse_xbr_frame(), parse_xll_parameters(), parse_xxch_frame(), populate_distribution(), pps_3d_extension(), pps_multilayer_extension(), pps_range_extensions(), pps_scc_extension(), pred_weight_table(), preview_obmc(), ps_read_extension_data(), qdm2_fft_decode_tones(), qt_rtp_parse_packet(), read_access_unit(), read_block(), read_block_types(), read_channel_data(), read_channel_params(), read_colors(), read_colorspace_details(), read_const_block_data(), read_dcs(), read_dct_coeffs(), read_decoding_params(), read_diff_float_data(), read_dist_clustering(), read_distribution_bundle(), read_filter_params(), read_frame_data(), read_high_coeffs(), read_huff_channels(), read_huffman_code_normal(), read_huffman_code_simple(), read_huffman_tree(), read_map(), read_matrix_params(), read_motion_values(), read_quant_matrix_ext(), read_residue(), read_restart_header(), read_runs(), read_sbr_channel_pair_element(), read_sbr_data(), read_sbr_grid(), read_sbr_header(), read_sbr_single_channel_element(), read_simple_vlc_prefix(), read_sl_header(), read_specific_config(), read_table(), read_tree(), read_uint_max(), read_var_block_data(), read_vec_pos(), rv10_decode_picture_header(), rv20_decode_picture_header(), rv30_parse_slice_header(), rv34_decode_cbp(), rv34_decode_intra_mb_header(), rv40_decode_intra_types(), rv40_parse_slice_header(), sb_decode(), scaling_list_data(), scan_mmco_reset(), siren_decode(), skip_1stop_8data_bits(), skip_data_stream_element(), skip_hrd_parameters(), skip_scaling_list_data(), skip_timing_info(), smacker_decode_bigtree(), smacker_decode_header_tree(), smacker_decode_tree(), smk_get_code(), smka_decode_frame(), speex_std_stereo(), split_cb_shape_sign_unquant(), spx_coordinates(), spx_strategy(), svq1_decode_frame_header(), svq1_decode_motion_vector(), svq3_decode_init(), svq3_decode_mb(), svq3_decode_slice_header(), synth_block_fcb_acb(), synth_superframe(), synthfilt_build_sb_samples(), tak_decode_frame(), tak_parse_streaminfo(), tm2_read_tree(), truehd_core_filter(), truespeech_read_frame(), tscc2_decode_mb(), twinvq_read_bitstream(), unpack_alpha(), unpack_bitstream(), unpack_block_qpis(), unpack_frame(), unpack_SQVH(), unpack_superblocks(), unpack_vectors(), uvlc(), vaapi_mpeg2_decode_slice(), vble_unpack(), vc1_decode_ac_coeff(), vc1_decode_b_mb(), vc1_decode_b_mb_intfi(), vc1_decode_b_mb_intfr(), vc1_decode_frame(), vc1_decode_i_block(), vc1_decode_i_block_adv(), vc1_decode_i_blocks(), vc1_decode_i_blocks_adv(), vc1_decode_intra_block(), vc1_decode_p_mb(), vc1_decode_p_mb_intfi(), vc1_decode_p_mb_intfr(), vop_dquant_decoding(), vorbis_floor1_decode(), vorbis_parse_audio_packet(), vorbis_parse_id_hdr(), vorbis_parse_setup_hdr(), vorbis_parse_setup_hdr_codebooks(), vorbis_parse_setup_hdr_mappings(), vorbis_parse_setup_hdr_modes(), vorbis_parse_setup_hdr_residues(), vp3_decode_frame(), vp6_get_nb_null(), vp6_parse_coeff_huffman(), vp8_lossless_decode_frame(), vp9_raw_reorder_frame_parse(), vp9_superframe_filter(), vp9_superframe_split_filter(), vvc_parse_nal_header(), vvcc_parse_ptl(), vvcc_parse_sps(), vvcc_parse_vps(), wma_decode_block(), wmv2_decode_mb(), wmv2_decode_motion(), wmv2_pred_motion(), wv_get_value(), wv_get_value_float(), x8_decode_intra_mb(), x8_get_ac_rlf(), and xan_huffman_decode().

◆ show_bits1()

static unsigned int show_bits1 ( GetBitContext * s )

inlinestatic

Definition at line 408 of file get_bits.h.

Referenced by decode_vector(), decode_vui_parameters(), and sb_decode().

◆ skip_bits1()

static void skip_bits1 ( GetBitContext * s )

inlinestatic

Definition at line 413 of file get_bits.h.

Referenced by colour_mapping_octants(), decode_channel_map(), decode_dynamic_range(), decode_frame(), decode_frame_packing_arrangement(), decode_ga_specific_config(), decode_inter(), decode_pic(), decode_profile_tier_level(), decode_seq_header(), decode_sequence_header_adv(), decode_studio_vol_header(), decode_studio_vop_header(), decode_vol_header(), decode_vop_header(), ff_adts_header_parse(), ff_avc_decode_sps(), ff_dolby_e_parse_header(), ff_eac3_parse_header(), ff_flv_decode_picture_header(), ff_h263_decode_mb(), ff_h263_decode_picture_header(), ff_h263_resync(), ff_h264_decode_ref_pic_marking(), ff_hevc_parse_sps(), ff_intel_h263_decode_picture_header(), ff_mpeg4_decode_studio_slice_header(), h261_decode_picture_header(), hevc_parse_slice_header(), hvcc_parse_sps(), hvcc_parse_vui(), ipu_decode_frame(), jpegxl_read_extra_channel_info(), mpeg4_decode_gop_header(), mpeg4_decode_partition_a(), mpeg4_decode_studio_mb(), mpeg_decode_mb(), mpeg_decode_slice(), nal_unit_parse_header(), osq_decode_block(), parse_band_ext(), parse_color_config(), parse_descriptor(), parse_frame_header(), parse_nal_unit(), parse_obu_header(), parse_rps(), parse_sequence_header(), pps_3d_extension(), preview_obmc(), read_access_unit(), read_specific_config(), rv30_parse_slice_header(), rv40_parse_slice_header(), skip_sub_layer_hrd_parameters(), smacker_decode_header_tree(), smka_decode_frame(), svq1_decode_frame_header(), svq3_decode_slice_header(), unpack_bitstream(), vvc_parse_nal_header(), vvcc_parse_ptl(), vvcc_parse_sps(), and vvcc_parse_vps().

◆ get_bits_long()

static unsigned int get_bits_long	(	GetBitContext *	s,
		int	n
	)

inlinestatic

Read 0-32 bits.

Definition at line 421 of file get_bits.h.

Referenced by apac_decode(), av_dynamic_hdr_plus_from_t35(), cbs_av1_read_uvlc(), cbs_read_se_golomb(), cbs_read_ue_golomb(), cbs_read_unsigned(), chs_parse_header(), dca_parse_params(), decode_block(), decode_buffering_period(), decode_channel_residues(), decode_element(), decode_frame(), decode_gop_header(), decode_huffman2(), decode_lowdelay_slice(), decode_nal_sei_timecode(), decode_rice(), decode_scalar(), decode_segment(), decode_vui(), decode_vui_parameters(), dirac_decode_picture_header(), dss_sp_unpack_coeffs(), escape124_decode_frame(), evcc_parse_sps(), ff_dca_parse_core_frame_header(), ff_dovi_rpu_parse(), ff_h264_sei_process_picture_timing(), ff_hevc_decode_nal_vps(), ff_mpeg4_decode_studio_slice_header(), ff_msmpeg4_decode_picture_header(), ff_wma_get_large_val(), get_bits64(), get_block_sizes(), get_egolomb(), get_linear(), get_rice_un(), get_sbits_long(), get_se_coef(), get_tail(), get_ue_coef(), get_ue_golomb_long(), get_ur_golomb(), get_ur_golomb_jpegls(), get_urice(), hls_slice_header(), hvcc_parse_ptl(), init_entropy_decoder(), jxl_u32(), lag_decode_prob(), latm_get_value(), mjpeg_decode_app(), mjpegb_decode_frame(), mov_read_ddts(), mov_read_stsz(), mp_read_changes_map(), mpc8_dec_base(), parse_aux_data(), parse_coding_header(), parse_common_header(), parse_config_ALS(), parse_descriptor(), parse_navi_table(), parse_x96_frame_exss(), parse_xbr_frame(), parse_xll_parameters(), parse_xxch_frame(), read_ans_symbol(), read_channel_data(), read_diff_float_data(), read_header(), read_huff_channels(), read_hybrid_uint(), read_offs(), read_specific_config(), read_var_block_data(), rtp_parse_mp4_au(), show_bits_long(), skip_label(), swf_probe(), theora_header(), tm2_read_deltas(), tm2_read_tree(), truespeech_read_frame(), tta_decode_init(), update_extradata(), vaapi_mpeg2_decode_slice(), vc1_decode_init(), vorbis_parse_id_hdr(), vorbis_parse_setup_hdr_codebooks(), vui_parameters(), vvcc_parse_ptl(), wavpack_decode_block(), wv_get_value(), and wv_get_value_integer().

◆ get_bits64()

static uint64_t get_bits64	(	GetBitContext *	s,
		int	n
	)

inlinestatic

Read 0-64 bits.

Definition at line 453 of file get_bits.h.

Referenced by ff_flac_parse_streaminfo(), get_sbits64(), get_ts64(), hvcc_parse_ptl(), tak_parse_streaminfo(), tak_read_header(), update_extradata(), and vorbis_floor0_decode().

◆ get_sbits_long()

static int get_sbits_long	(	GetBitContext *	s,
		int	n
	)

inlinestatic

Read 0-32 bits as a signed integer.

Definition at line 471 of file get_bits.h.

Referenced by chs_parse_band_data(), decode_channel_residues(), decode_element(), decode_residuals(), decode_subframe(), decode_subframe_fixed(), decode_subframe_fixed_wide(), decode_subframe_lpc(), do_decode(), ff_cbs_read_signed(), and read_const_block_data().

◆ get_sbits64()

static int64_t get_sbits64	(	GetBitContext *	s,
		int	n
	)

inlinestatic

Read 0-64 bits as a signed integer.

Definition at line 483 of file get_bits.h.

Referenced by decode_subframe(), decode_subframe_fixed_33bps(), and decode_subframe_lpc_33bps().

◆ show_bits_long()

static unsigned int show_bits_long	(	GetBitContext *	s,
		int	n
	)

inlinestatic

◆ init_get_bits()

static int init_get_bits	(	GetBitContext *	s,
		const uint8_t *	buffer,
		int	bit_size
	)

inlinestatic

Initialize GetBitContext.

Parameters

buffer	bitstream buffer, must be AV_INPUT_BUFFER_PADDING_SIZE bytes larger than the actual read bits because some optimized bitstream readers read 32 or 64 bit at once and could read over the end
bit_size	the size of the buffer in bits

Returns: 0 on success, AVERROR_INVALIDDATA if the buffer_size would overflow.

Definition at line 514 of file get_bits.h.

Referenced by aac_adtstoasc_filter(), aac_sync(), adpcm_swf_decode(), adx_decode(), aic_decode_slice(), al_decode_frame(), apply_color_indexing_transform(), atrac1_decode_frame(), avs_decode_frame(), cavs_decode_frame(), cbs_av1_read_unit(), cbs_av1_split_fragment(), cbs_h264_read_nal_unit(), cbs_h265_read_nal_unit(), cbs_jpeg_read_unit(), cbs_mpeg2_read_unit(), cbs_vp9_read_unit(), cbs_vp9_split_fragment(), decode_audio_specific_config(), decode_bytes_and_gain(), decode_ext_header(), decode_frame(), decode_i_frame(), decode_lowdelay(), decode_p_frame(), decode_packet(), decode_plane(), decode_plane10(), decode_rle(), decode_slice(), decode_slice_alpha(), decode_slice_chroma(), decode_slice_luma(), dirac_decode_data_unit(), dss_sp_unpack_coeffs(), dts_probe(), dv_decode_video_segment(), dvbsub_read_2bit_string(), dvbsub_read_4bit_string(), encode_picture_ls(), ff_cbs_trace_write_log(), ff_dolby_e_convert_input(), ff_dxva2_mpeg2_fill_slice(), ff_flac_parse_streaminfo(), ff_h2645_packet_split(), ff_mjpeg_decode_init(), ff_msgsm_decode_block(), ff_rtp_send_h263_rfc2190(), ff_rv34_decode_frame(), frame_header_is_valid(), frame_header_obu(), ftr_parse(), gsm_decode_frame(), h261_decode_frame(), h261_handle_packet(), h263_handle_packet(), h264_find_frame_end(), hl_decode_mb(), hl_decode_mb_444(), hls_pcm_sample(), hq_decode_frame(), hqa_decode_frame(), huf_decode(), imc_decode_frame(), init_get_bits8(), init_get_bits8_le(), ipvideo_decode_format_11_opcodes(), latm_decode_audio_specific_config(), main(), message_list(), metadata_is_global(), mimic_decode_frame(), mjpeg_decode_scan(), mjpegb_decode_frame(), mlp_parse(), mov_read_ddts(), mov_read_stsz(), mov_write_dvc1_structs(), mp_decode_frame(), mp_decode_layer3(), mpc7_decode_init(), mpc8_decode_init(), mpc8_parse_seektable(), mpeg4_decode_header(), mxpeg_decode_frame(), nelly_decode_block(), parse_avs3_nal_units(), parse_fmtp_config(), parse_sequence_header(), parse_setup_header(), process_subpacket_10(), process_subpacket_11(), process_subpacket_12(), process_subpacket_9(), qdm2_decode_fft_packets(), qdm2_decode_super_block(), qt_rtp_parse_packet(), read_access_unit(), read_huffman_tables(), read_old_huffman_tables(), read_sl_header(), rtp_parse_mp4_au(), rv10_decode_packet(), rv34_decode_slice(), save_bits(), send_picture(), seq_decode_op1(), seq_unpack_rle_block(), seqvideo_decode(), sipr_decode_frame(), siren_decode(), svq1_decode_frame(), svq3_decode_init(), svq3_decode_slice_header(), synth_superframe(), tgv_decode_inter(), theora_header(), tm2_read_stream(), tqi_decode_frame(), truespeech_read_frame(), vaapi_mpeg2_decode_slice(), vble_decode_frame(), vc1_decode_frame(), vc1_decode_init(), vorbis_decode_init(), vp9_raw_reorder_frame_parse(), wma_decode_superframe(), and wmavoice_decode_init().

◆ init_get_bits8()

static int init_get_bits8	(	GetBitContext *	s,
		const uint8_t *	buffer,
		int	byte_size
	)

inlinestatic

Initialize GetBitContext.

Parameters

buffer	bitstream buffer, must be AV_INPUT_BUFFER_PADDING_SIZE bytes larger than the actual read bits because some optimized bitstream readers read 32 or 64 bit at once and could read over the end
byte_size	the size of the buffer in bytes

Returns: 0 on success, AVERROR_INVALIDDATA if the buffer_size would overflow.

Definition at line 545 of file get_bits.h.

Referenced by aac_decode_frame(), ac3_decode_frame(), adpcm_decode_frame(), adts_decode_extradata(), alac_decode_frame(), apac_decode(), ape_decode_frame(), atrac3p_decode_frame(), atrac9_decode_frame(), atrac9_decode_init(), av_adts_header_parse(), av_dynamic_hdr_plus_from_t35(), avpriv_adts_header_parse(), avpriv_dca_parse_core_frame_header(), avpriv_mpeg4audio_get_config2(), avpriv_tak_parse_streaminfo(), binkaudio_receive_frame(), bitline2chunky(), bitplanar2chunky(), bonk_decode(), cbs_h266_read_nal_unit(), cfhd_decode(), cllc_decode_frame(), clv_decode_frame(), cri_decode_frame(), dca_parse_params(), decode_blocks(), decode_chunks(), decode_extradata_ps(), decode_frame(), decode_frame_header(), decode_header_trees(), decode_huff(), decode_huffman2(), decode_inter_plane(), decode_intra_plane(), decode_motion_vectors(), decode_mvdv(), decode_nal_sei_message(), decode_nal_units(), decode_packet(), decode_palette(), decode_palmapdata(), decode_plane(), decode_slice(), decode_slice_thread(), decode_speedhq_field(), decode_subband_internal(), decode_tiledata(), decode_vectors(), decode_wmv9(), dnxhd_decode_row(), dxtory_decode_v2(), eac3_core_filter(), escape124_decode_frame(), escape130_decode_frame(), evcc_parse_sps(), evrc_decode_frame(), ff_aom_parse_film_grain_sets(), ff_av1_parse_seq_header(), ff_avc_decode_sps(), ff_ccitt_unpack(), ff_dca_core_parse(), ff_dca_core_parse_exss(), ff_dca_exss_parse(), ff_dovi_rpu_parse(), ff_h263_decode_frame(), ff_h264_sei_decode(), ff_h264_sei_process_picture_timing(), ff_hls_senc_parse_audio_setup_info(), ff_iamf_parse_obu_header(), ff_isom_get_vpcc_features(), ff_ivi_decode_frame(), ff_jpegxl_parse_codestream_header(), ff_mjpeg_decode_frame_from_buf(), ff_opus_rc_dec_init(), ff_parse_a53_cc(), ff_parse_itu_t_t35_to_dynamic_hdr_vivid(), ff_rtjpeg_decode_frame_yuv420(), ffat_create_decoder(), fic_decode_slice(), flac_decode_frame(), flashsv_decode_frame(), fraps2_decode_plane(), ftr_decode_frame(), g722_decode_frame(), generate_fake_vps(), get_last_needed_nal(), h264_probe(), handle_eac3(), hcom_decode(), hls_decode_entry_wpp(), horizontal_fill(), huf_unpack_enc_table(), hvcc_add_nal_unit(), ipu_decode_frame(), ir2_decode_frame(), jpg_decode_data(), kempf_restore_buf(), lag_decode_arith_plane(), latm_decode_frame(), latm_write_frame_header(), lead_decode_frame(), loco_decode_plane(), magy_decode_slice(), magy_decode_slice10(), metasound_read_bitstream(), mjpegb_decode_frame(), mobiclip_decode(), mpc7_decode_frame(), mpc8_decode_frame(), mpeg1_decode_picture(), mpeg1_decode_sequence(), mpeg_decode_a53_cc(), mpeg_decode_gop(), mpeg_decode_slice(), mss1_decode_frame(), mss2_decode_frame(), mss4_decode_frame(), mxf_parse_h264_frame(), on2avc_decode_subframe(), osq_receive_frame(), parse(), parse_avs2_seq_header(), parse_frame(), parse_grid_1_chunk(), parse_high_res_grid(), parse_lfe_chunk(), parse_nal_unit(), parse_nal_units(), parse_obu_header(), parse_tonal_chunk(), parse_tonal_group(), parse_ts1_chunk(), parse_ts2_chunk(), pcx_decode_frame(), qcelp_decode_frame(), qdmc_decode_frame(), ra144_decode_frame(), ra288_decode_frame(), read_high_coeffs(), read_specific_config(), shn_probe(), shorten_decode_frame(), siren_decode(), slice_init_entry_points(), smka_decode_frame(), speex_decode_frame(), svq1_decode_frame(), svq3_decode_frame(), swf_probe(), tak_decode_frame(), tak_parse(), tak_read_header(), tgq_decode_mb(), truehd_core_filter(), truemotion2rt_decode_frame(), try_parse(), tscc2_decode_slice(), tta_decode_frame(), tta_decode_init(), twinvq_read_bitstream(), unpack_bitstream(), unpack_frame(), unpack_gray(), update_extradata(), vc1_decode_frame(), vc1_decode_init(), vc1_extract_header(), vorbis_decode_frame(), vp3_decode_frame(), vp6_parse_header(), vp8_lossless_decode_frame(), vp9_superframe_filter(), vp9_superframe_split_filter(), vvcc_add_nal_unit(), wavarc_decode(), wavpack_decode_block(), wmavoice_decode_packet(), and xan_huffman_decode().

◆ init_get_bits8_le()

static int init_get_bits8_le	(	GetBitContext *	s,
		const uint8_t *	buffer,
		int	byte_size
	)

inlinestatic

Definition at line 553 of file get_bits.h.

Referenced by cbs_vp8_read_unit(), decode_frame(), and decode_plane().

◆ align_get_bits()

static const uint8_t* align_get_bits ( GetBitContext * s )

inlinestatic

Definition at line 561 of file get_bits.h.

Referenced by atrac9_decode_frame(), avs_decode_frame(), cabac_init_decoder(), decode_band(), decode_band_hdr(), decode_component(), decode_frame(), decode_frame_header(), decode_gop_header(), decode_hq_slice(), decode_inter_plane(), decode_intra_plane(), decode_lowdelay(), decode_mb_info(), decode_pic_hdr(), decode_rle(), decode_slice(), dirac_unpack_block_motion_data(), dirac_unpack_idwt_params(), dirac_unpack_prediction_parameters(), ff_ccitt_unpack(), ff_copy_pce_data(), ff_dirac_init_arith_decoder(), ff_h263_decode_picture_header(), ff_h263_resync(), ff_h264_decode_mb_cavlc(), ff_jpegls_decode_picture(), ff_lag_rac_init(), ff_mjpeg_decode_sos(), ff_mpeg4_decode_picture_header(), ff_tak_decode_frame_header(), h261_resync(), handle_rstn(), ipu_decode_frame(), ivi_dec_tile_data_size(), ivi_decode_blocks(), ljpeg_decode_rgb_scan(), ljpeg_decode_yuv_scan(), mjpeg_decode_app(), mp_decode_frame(), mpeg4_is_resync(), mpeg_decode_slice(), mss2_decode_frame(), next_start_code_studio(), osq_decode_block(), parse_frame_header(), read_block(), read_channel_data(), read_diff_float_data(), read_frame_data(), read_high_coeffs(), read_low_coeffs(), read_specific_config(), skip_data_stream_element(), tak_decode_frame(), try_parse(), tta_decode_frame(), and wma_decode_block().

◆ get_vlc2()

static av_always_inline int get_vlc2	(	GetBitContext *	s,
		const VLCElem *	table,
		int	bits,
		int	max_depth
	)

static

Parse a vlc code.

Parameters

bits	is the number of bits which will be read at once, must be identical to nb_bits in vlc_init()
max_depth	is the number of times bits bits must be read to completely read the longest vlc code = (max_vlc_length + bits - 1) / bits

Returns: the code parsed or -1 if no vlc matches

Definition at line 652 of file get_bits.h.

Referenced by asv1_decode_block(), asv1_get_level(), bitplane_decoding(), dca_get_vlc(), decode_argb(), decode_argbi(), decode_argx(), decode_argxi(), decode_aybr(), decode_aybri(), decode_band_numwavs(), decode_block(), decode_byry(), decode_byryi(), decode_c82i(), decode_c82p(), decode_ca2i(), decode_ca2p(), decode_ca4i(), decode_ca4p(), decode_cce(), decode_channel(), decode_channel_sf_idx(), decode_channel_wordlen(), decode_coeff(), decode_coeffs(), decode_dc(), decode_dc_le(), decode_envelope(), decode_exp_vlc(), decode_frame(), decode_gainc_levels(), decode_gainc_loc_codes(), decode_gainc_npoints(), decode_group3_1d_line(), decode_group3_2d_line(), decode_huff(), decode_huffman2(), decode_i_block(), decode_i_frame(), decode_inter(), decode_intra(), decode_mb_info(), decode_mv_component(), decode_p_block(), decode_plane_bitstream(), decode_qu_spectra(), decode_residual(), decode_rgb(), decode_rgbi(), decode_rgbx(), decode_rgbxi(), decode_rle(), decode_scale_factors(), decode_scalefactors(), decode_tile(), decode_tones_amplitude(), decode_tones_frequency(), decode_tones_info(), decode_vectors(), decode_ybr(), decode_ybr10(), decode_ybr10i(), decode_ybri(), decode_ybyr(), decode_yry10(), decode_yry10i(), decouple_info(), ff_h263_decode_mb(), ff_h263_decode_motion(), ff_msmpeg4_decode_motion(), ff_rv_decode_dc(), ff_wma_run_level_decode(), fraps2_decode_plane(), gainc_level_mode1m(), gainc_loc_mode1(), get_cbphi(), get_coeff(), get_mvdata_interlaced(), get_scale_idx(), get_vlc_multi(), h261_decode_mb(), hq_decode_block(), hqa_decode_mb(), hqx_decode_422a(), hqx_decode_444a(), huf_decode(), huff_reader_get_symbol(), huffman_decode(), idx_to_quant(), imc_read_level_coeffs(), ir2_get_code(), ivi_decode_coded_blocks(), jpg_decode_block(), lag_decode_prob(), mjpeg_decode_dc(), mobiclip_decode(), mp_get_vlc(), mpc7_decode_frame(), mpc8_decode_frame(), mpeg4_decode_dc(), mpeg4_decode_mb(), mpeg4_decode_partition_a(), mpeg4_decode_partition_b(), mpeg4_decode_sprite_trajectory(), mpeg4_decode_studio_block(), mpeg_decode_mb(), mpeg_decode_motion(), mpeg_decode_slice(), msmpeg4_decode_dc(), msmpeg4v12_decode_mb(), msmpeg4v2_decode_motion(), msmpeg4v34_decode_mb(), mss4_decode_dct(), on2avc_decode_band_scales(), on2avc_decode_pairs(), on2avc_decode_quads(), parse_ch(), parse_joint_scale(), parse_scale(), parse_subframe_header(), parse_vlc(), populate_distribution(), predict_motion(), preview_obmc(), qdm2_get_vlc(), qdmc_get_vlc(), read_coeffs_coarse(), read_huff_channels(), read_prefix_symbol(), read_quant_spectral_coeffs(), read_run_encoding(), read_sbr_envelope(), read_sbr_noise(), read_scalefactors(), read_vlc_prefix(), rv34_decode_block(), rv34_decode_cbp(), rv40_decode_intra_types(), rv40_decode_mb_info(), setup_classifs(), smacker_decode_bigtree(), smka_decode_frame(), svq1_decode_block_intra(), svq1_decode_block_non_intra(), svq1_decode_delta_block(), svq1_decode_motion_vector(), synth_frame(), tm2_get_token(), tscc2_decode_mb(), unpack_block_qpis(), unpack_modes(), unpack_SQVH(), unpack_superblocks(), unpack_vectors(), unpack_vlcs(), vc1_decode_ac_coeff(), vc1_decode_b_mb(), vc1_decode_b_mb_intfi(), vc1_decode_b_mb_intfr(), vc1_decode_i_block(), vc1_decode_i_block_adv(), vc1_decode_i_blocks(), vc1_decode_i_blocks_adv(), vc1_decode_intra_block(), vc1_decode_p_block(), vc1_decode_p_mb(), vc1_decode_p_mb_intfi(), vc1_decode_p_mb_intfr(), vlc_decode_block(), vorbis_floor0_decode(), vorbis_floor1_decode(), vorbis_residue_decode_internal(), vp4_get_mv(), vp6_parse_coeff_huffman(), wma_decode_block(), wmv2_decode_mb(), wnv1_get_code(), x8_get_ac_rlf(), x8_get_dc_rlf(), and x8_get_orient_vlc().

◆ get_vlc_multi()

static int get_vlc_multi	(	GetBitContext *	s,
		uint8_t *	dst,
		const VLC_MULTI_ELEM *const	Jtable,
		const VLCElem *const	table,
		const int	bits,
		const int	max_depth,
		const int	symbols_size
	)

inlinestatic

Definition at line 667 of file get_bits.h.

◆ decode012()

static int decode012 ( GetBitContext * gb )

inlinestatic

Definition at line 677 of file get_bits.h.

◆ decode210()

static int decode210 ( GetBitContext * gb )

inlinestatic

Definition at line 687 of file get_bits.h.

◆ get_bits_left()

static int get_bits_left ( GetBitContext * gb )

inlinestatic

Definition at line 695 of file get_bits.h.

Referenced by aac_decode_er_frame(), aac_decode_frame_int(), ac_normalize(), ac_read_model(), add_coefficients(), aic_decode_coeffs(), al_decode_frame(), alac_decode_frame(), apac_decode(), ape_decode_value_3860(), arith_normalise(), atrac3p_decode_frame(), av_dynamic_hdr_plus_from_t35(), bink_decode_plane(), binkaudio_receive_frame(), bit_copy(), cabac_init_decoder(), cbs_av1_get_payload_bytes_left(), cbs_av1_read_increment(), cbs_av1_read_leb128(), cbs_av1_read_ns(), cbs_av1_read_uvlc(), cbs_av1_split_fragment(), cbs_h2645_read_more_rbsp_data(), cbs_mpeg2_read_unit(), cbs_read_se_golomb(), cbs_read_ue_golomb(), cbs_read_unsigned(), cbs_vp8_bool_decoder_fill_value(), cbs_vp8_read_unsigned_le(), cbs_vp9_read_increment(), cbs_vp9_read_le(), cbs_vp9_read_s(), check_slice_end(), chs_parse_band_data(), cllc_decode_frame(), clv_decode_frame(), codeblock(), copy_bits(), cri_decode_frame(), decode_0cpy(), decode_1dif(), decode_2slp(), decode_422_bitstream(), decode_5elp(), decode_array_0000(), decode_band_types(), decode_block(), decode_channel(), decode_channel_residues(), decode_component(), decode_dcac(), decode_eld_specific_config(), decode_element(), decode_entropy_coded_image(), decode_envelope(), decode_frame(), decode_gain_info(), decode_gray_bitstream(), decode_group3_1d_line(), decode_group3_2d_line(), decode_header_trees(), decode_hq_slice(), decode_huff(), decode_huffman2(), decode_i_block(), decode_inter(), decode_inter_plane(), decode_intra(), decode_intra_plane(), decode_lowdelay(), decode_lowdelay_slice(), decode_mb(), decode_mb_info(), decode_motion_vectors(), decode_p_block(), decode_pce(), decode_pic(), decode_pic_hdr(), decode_plane(), decode_plane10(), decode_plane_bitstream(), decode_profile_tier_level(), decode_rice(), decode_skip_count(), decode_slice(), decode_studio_vop_header(), decode_subframe(), decode_subframe_length(), decode_uncompressed(), decode_vector(), decode_vectors(), decode_vol_header(), decode_vop_header(), decode_vui(), decode_vui_parameters(), do_decode(), dv_decode_video_segment(), dx2_decode_slice_410(), dx2_decode_slice_420(), dx2_decode_slice_444(), dx2_decode_slice_5x5(), dx2_decode_slice_rgb(), ensure_bits(), ep_init_cabac_decoder(), escape124_decode_frame(), ff_bgmc_decode_init(), ff_cbs_read_signed(), ff_dirac_init_arith_decoder(), ff_dolby_e_parse_header(), ff_dovi_rpu_parse(), ff_h263_decode_frame(), ff_h263_decode_mb(), ff_h263_decode_picture_header(), ff_h263_resync(), ff_h264_decode_mb_cavlc(), ff_h264_decode_seq_parameter_set(), ff_h264_sei_decode(), ff_hevc_decode_nal_pps(), ff_hevc_decode_nal_sei(), ff_hevc_decode_nal_vps(), ff_hevc_parse_sps(), ff_iamf_parse_obu_header(), ff_intel_h263_decode_picture_header(), ff_intrax8_decode_picture(), ff_ivi_decode_frame(), ff_jpegls_decode_picture(), ff_jpegxl_parse_codestream_header(), ff_lag_rac_init(), ff_mjpeg_decode_dht(), ff_mjpeg_decode_dqt(), ff_mjpeg_decode_frame_from_buf(), ff_mjpeg_decode_sos(), ff_mpeg4_decode_studio_slice_header(), ff_mpeg4audio_get_config_gb(), ff_msmpeg4_decode_block(), ff_msmpeg4_decode_picture_header(), ff_parse_a53_cc(), ff_parse_itu_t_t35_to_dynamic_hdr_vivid(), ff_tak_decode_frame_header(), ff_vc1_parse_frame_header(), ff_wmv2_decode_secondary_picture_header(), fic_decode_block(), flashsv_decode_frame(), fraps2_decode_plane(), ftr_decode_frame(), get_block(), get_dimension(), get_interleaved_ue_golomb(), get_rice_ook(), get_rice_un(), get_sr_golomb_dst(), get_ts64(), get_ur_golomb_jpegls(), get_urice(), h261_decode_mb(), h261_decode_picture_header(), h261_handle_packet(), h261_resync(), h263_decode_gob_header(), h263_handle_packet(), h264_find_frame_end(), handle_rstn(), hcom_decode(), hls_slice_header(), hqa_decode_mb(), huf_decode(), huf_unpack_enc_table(), init_quantized_coeffs_elem0(), init_tone_level_dequantization(), intlist_read(), ipu_decode_frame(), ipvideo_decode_format_11_opcodes(), ir2_decode_plane(), ir2_decode_plane_inter(), is_input_end(), jpegxl_read_extra_channel_info(), jpegxl_skip_extensions(), jpg_decode_block(), latm_decode_audio_specific_config(), ljpeg_decode_rgb_scan(), ljpeg_decode_yuv_scan(), loco_get_rice(), ls_decode_line(), magy_decode_slice10(), message_list(), mjpeg_decode_app(), mjpeg_decode_com(), mjpeg_decode_scan(), mjpeg_decode_scan_progressive_ac(), mjpegb_decode_frame(), mp_decode_frame(), mp_decode_layer3(), mpc8_decode_frame(), mpc8_parse_seektable(), mpeg4_decode_block(), mpeg4_decode_studio_mb(), mpeg_decode_a53_cc(), mpeg_decode_slice(), msmpeg4v34_decode_mb(), nb_decode(), next_start_code_studio(), parse_aux_data(), parse_bintree(), parse_ch(), parse_channel(), parse_coding_header(), parse_config_ALS(), parse_descriptor(), parse_fmtp_config(), parse_frame_header(), parse_grid_1_chunk(), parse_grid_2(), parse_mb_skip(), parse_obu_header(), parse_packet_header(), parse_ptl(), parse_rps(), parse_sequence_header(), parse_setup_header(), parse_subframe_audio(), parse_subframe_header(), parse_tonal(), parse_tonal_chunk(), parse_x96_coding_header(), parse_x96_subframe_audio(), parse_x96_subframe_header(), parse_xbr_subframe(), qdm2_fft_decode_tones(), qdmc_get_vlc(), read_audio_mux_element(), read_block(), read_block_types(), read_code(), read_colors(), read_dcs(), read_dct_coeffs(), read_diff_float_data(), read_distribution_bundle(), read_frame_data(), read_header(), read_len_table(), read_motion_values(), read_patterns(), read_payload_length_info(), read_quant_matrix_ext(), read_runs(), read_specific_config(), read_stream_mux_config(), read_tree(), read_vlc_prefix(), rice_decompress(), sb_decode(), seq_unpack_rle_block(), shorten_decode_frame(), siren_decode(), skip_1stop_8data_bits(), skip_data_stream_element(), skip_extensions(), skip_hdr_extension(), skip_icc_profile(), smacker_decode_bigtree(), smacker_decode_tree(), smk_get_code(), smka_decode_frame(), speex_decode_frame(), svq1_decode_frame_header(), svq3_decode_frame(), svq3_decode_slice_header(), synth_superframe(), synthfilt_build_sb_samples(), tak_decode_frame(), tgv_decode_inter(), tm2_read_stream(), try_parse(), tscc2_decode_mb(), tta_decode_frame(), unpack_alpha(), unpack_block_qpis(), unpack_dct_coeffs(), unpack_modes(), unpack_superblocks(), unpack_vectors(), unpack_vlcs(), user_data(), uvlc(), vble_unpack(), vc1_decode_ac_coeff(), vc1_decode_b_blocks(), vc1_decode_i_blocks(), vc1_decode_i_blocks_adv(), vc1_decode_p_blocks(), vorbis_residue_decode_internal(), vp6_parse_coeff_huffman(), wavpack_decode_block(), wma_decode_block(), wma_decode_superframe(), wmavoice_decode_packet(), wmv2_decode_mb(), wv_get_value(), wv_get_value_float(), wv_get_value_integer(), and xan_huffman_decode().

◆ skip_1stop_8data_bits()

static int skip_1stop_8data_bits ( GetBitContext * gb )

inlinestatic

Definition at line 700 of file get_bits.h.

Referenced by ff_dxva2_mpeg2_fill_slice(), ff_flv_decode_picture_header(), ff_h263_decode_picture_header(), ff_intel_h263_decode_picture_header(), h261_decode_gob_header(), h261_decode_picture_header(), mpeg_decode_slice(), svq1_decode_frame_header(), svq3_decode_init(), svq3_decode_slice_header(), and vaapi_mpeg2_decode_slice().

Data Structures

Macros

Functions

Detailed Description

Macro Definition Documentation

◆ UNCHECKED_BITSTREAM_READER

◆ CACHED_BITSTREAM_READER

◆ MIN_CACHE_BITS

◆ OPEN_READER_NOSIZE

◆ OPEN_READER

◆ BITS_AVAILABLE

◆ CLOSE_READER

◆ UPDATE_CACHE_BE_EXT

◆ UPDATE_CACHE_LE_EXT

◆ UPDATE_CACHE_LE_32

◆ UPDATE_CACHE_BE_32

◆ UPDATE_CACHE_LE

◆ UPDATE_CACHE_BE

◆ UPDATE_CACHE

◆ UPDATE_CACHE_32

◆ SKIP_CACHE

◆ SKIP_COUNTER

◆ BITS_LEFT

◆ SKIP_BITS

◆ LAST_SKIP_BITS

◆ SHOW_UBITS_LE

◆ SHOW_SBITS_LE

◆ SHOW_UBITS_BE

◆ SHOW_SBITS_BE

◆ SHOW_UBITS

◆ SHOW_SBITS

◆ GET_CACHE

◆ GET_VLC

◆ GET_RL_VLC

Function Documentation

◆ get_bits()

◆ skip_bits()

◆ show_bits()

◆ get_bits_count()

◆ skip_bits_long()

◆ get_xbits()

◆ get_xbits_le()

◆ get_sbits()

◆ get_bitsz()

◆ get_bits_le()

◆ get_bits1()

◆ show_bits1()

◆ skip_bits1()

◆ get_bits_long()

◆ get_bits64()

◆ get_sbits_long()

◆ get_sbits64()

◆ show_bits_long()

◆ init_get_bits()

◆ init_get_bits8()

◆ init_get_bits8_le()

◆ align_get_bits()

◆ get_vlc2()

◆ get_vlc_multi()

◆ decode012()

◆ decode210()

◆ get_bits_left()

◆ skip_1stop_8data_bits()