crc.c File Reference

#include "config.h"
#include "common.h"
#include "bswap.h"
#include "crc.h"

Go to the source code of this file.

Macros
#define	CRC_TABLE_SIZE   1024

Functions
int	av_crc_init (AVCRC *ctx, int le, int bits, uint32_t poly, int ctx_size)
	Initialize a CRC table.
const AVCRC *	av_crc_get_table (AVCRCId crc_id)
	Get an initialized standard CRC table.
uint32_t	av_crc (const AVCRC *ctx, uint32_t crc, const uint8_t *buffer, size_t length)
	Calculate the CRC of a block.

Variables
struct {
uint8_t   le
uint8_t   bits
uint32_t   poly
}	av_crc_table_params [AV_CRC_MAX]
static AVCRC	av_crc_table [AV_CRC_MAX][CRC_TABLE_SIZE]

Macro Definition Documentation

#define CRC_TABLE_SIZE   1024

Definition at line 256 of file crc.c.

Variable Documentation

uint8_t le

Definition at line 259 of file crc.c.

Referenced by av_crc_get_table(), decode_frame(), epaf_read_header(), ircam_read_header(), mjpeg_decode_app(), and webp_decode_frame().

uint8_t bits

Definition at line 260 of file crc.c.

Referenced by aac_sync(), ac3_compute_mantissa_size_c(), ac3_decode_transform_coeffs_ch(), adaptive_quantization(), apply_lpc(), arith2_get_consumed_bytes(), arith_get_bits(), av_base64_decode(), av_crc_get_table(), av_crc_init(), av_get_bits_per_pixel(), av_get_padded_bits_per_pixel(), avisynth_read_packet_video(), avpriv_copy_bits(), avpriv_copy_pce_data(), aw_parse_coords(), binkb_get_value(), binkb_read_bundle(), bit8x8_c(), bits2qp(), build_canonical_huff(), build_huff(), build_huff_tree(), build_table(), calc_bit_demand(), calc_rice_params(), check_slice_end(), codebook_trellis_rate(), dca_decode_frame(), dct_error(), dec_gain(), decode_band_numwavs(), decode_band_types(), decode_block(), decode_gainc_levels(), decode_gainc_loc_codes(), decode_gainc_npoints(), decode_i2_frame(), decode_init(), decode_line(), decode_qu_spectra(), decode_rgb_frame(), decode_rle(), decode_spectrum_and_dequant(), decode_subframe(), decode_tones_amplitude(), decode_tones_frequency(), decode_tones_info(), delta_mono(), delta_stereo(), dequant(), dnxhd_calc_ac_bits(), dnxhd_encode_rdo(), dnxhd_find_qscale(), dvbsub_read_2bit_string(), dvbsub_read_4bit_string(), dvbsub_read_8bit_string(), encode_block(), encode_frame(), encode_mode(), encode_picture(), encode_residual_ch(), encode_rgb_frame(), encode_thread(), estimate_acs(), estimate_alpha_plane(), estimate_dcs(), estimate_slice_plane(), extend_code(), ff_acelp_fc_pulse_per_track(), ff_decode_10_pulses_35bits(), ff_eac3_decode_transform_coeffs_aht_ch(), ff_h263_encode_motion(), ff_h264_decode_mb_cabac(), ff_huffyuv_generate_bits_table(), ff_mp_get_chroma_shift(), ff_mpeg1_encode_init(), ff_mpeg4_merge_partitions(), ff_MPV_encode_picture(), ff_rate_control_init(), ff_rate_estimate_qscale(), ff_rv34_decode_init(), fillPlane16(), find_slice_quant(), find_subframe_rice_params(), fold(), g2m_load_cursor(), gainc_level_mode1m(), gb_get_v(), generate_joint_tables(), get_bits_diff(), get_mvdata_interlaced(), get_qscale(), hScale16To19_c(), imc_decode_block(), imc_refine_bit_allocation(), init_pass2(), init_static(), init_uni_h263_rl_tab(), init_uni_mpeg4_rl_tab(), ivi_create_huff_from_desc(), kempf_decode_tile(), lag_decode_prob(), ljpeg_decode_yuv_scan(), main(), metasound_read_bitstream(), mp_decode_layer2(), mpc8_dec_enum(), mpc8_decode_frame(), mpeg1_encode_motion(), mpeg4_decode_partition_a(), msmpeg4v2_encode_motion(), mss4_init_vlc(), nelly_decode_block(), put_codebook_header(), put_subframe_samples(), rd8x8_c(), read_and_decode_spectrum(), read_argb_line(), read_code_table(), read_dct_coeffs(), read_huffman_code_normal(), read_huffman_tables(), read_quant_spectral_coeffs(), read_rgb24_component_line(), read_sbr_envelope(), read_yuv_component_line(), recurse_mono(), recurse_stereo(), s302m_parse_frame_header(), scale_vector(), search_for_quantizers_twoloop(), seq_decode_op1(), smka_decode_frame(), sort_mono(), sort_stereo(), twinvq_read_bitstream(), unpack_intraframe(), vorbis_parse_setup_hdr_floors(), vp56_rac_renorm(), wmavoice_init_static_data(), wp_log2(), xan_unpack_luma(), and zero_extend().

uint32_t poly

Definition at line 261 of file crc.c.

Referenced by av_crc_get_table(), mul_poly(), and tta_check_crc64().

struct { ... } av_crc_table_params[AV_CRC_MAX]

Initial value:

= {
    [AV_CRC_8_ATM]      = { 0,  8,       0x07 },
    [AV_CRC_16_ANSI]    = { 0, 16,     0x8005 },
    [AV_CRC_16_CCITT]   = { 0, 16,     0x1021 },
    [AV_CRC_24_IEEE]    = { 0, 24,   0x864CFB },
    [AV_CRC_32_IEEE]    = { 0, 32, 0x04C11DB7 },
    [AV_CRC_32_IEEE_LE] = { 1, 32, 0xEDB88320 },
}

Referenced by av_crc_get_table().

AVCRC av_crc_table[AV_CRC_MAX][CRC_TABLE_SIZE]

static

Definition at line 270 of file crc.c.

Referenced by av_crc_get_table().