ra8_jpeg_bitreader_t Struct Reference

Big-endian bit reader over an entropy-coded segment. More...

#include <ra8_jpeg_sw_internal.h>

Data Fields
const uint8_t *	buf
	Byte stream.
uint32_t	len
	Total bytes.
uint32_t	pos
	Read cursor.
uint32_t	acc
	Bit accumulator.
uint8_t	nbits
	Bits valid in acc (0..32).
uint8_t	had_eoi
	Set when an end marker is consumed.

Detailed Description

Big-endian bit reader over an entropy-coded segment.

Tracks a streaming byte cursor plus a 32-bit accumulator with nbits valid bits at its MSB end. Handles 0xFF 0x00 byte stuffing per T.81 sec F.1.2.3.

Definition at line 367 of file ra8_jpeg_sw_internal.h.

Field Documentation

acc

uint32_t ra8_jpeg_bitreader_t::acc

Bit accumulator.

Definition at line 371 of file ra8_jpeg_sw_internal.h.

Referenced by internal_br_fill(), internal_dec_scan_begin(), and priv_jpeg_sw_br_get_bits().

buf

const uint8_t* ra8_jpeg_bitreader_t::buf

Byte stream.

Definition at line 368 of file ra8_jpeg_sw_internal.h.

Referenced by internal_br_fill(), and internal_dec_scan_begin().

had_eoi

uint8_t ra8_jpeg_bitreader_t::had_eoi

Set when an end marker is consumed.

Definition at line 373 of file ra8_jpeg_sw_internal.h.

Referenced by internal_br_fill(), and internal_dec_scan_begin().

len

uint32_t ra8_jpeg_bitreader_t::len

Total bytes.

Definition at line 369 of file ra8_jpeg_sw_internal.h.

Referenced by internal_br_fill(), internal_dec_scan_begin(), and internal_js_scan_margin().

nbits

uint8_t ra8_jpeg_bitreader_t::nbits

Bits valid in acc (0..32).

Definition at line 372 of file ra8_jpeg_sw_internal.h.

Referenced by internal_br_fill(), internal_dec_scan_begin(), priv_jpeg_sw_br_get_bits(), and priv_jpeg_sw_htab_decode().

pos

uint32_t ra8_jpeg_bitreader_t::pos

Read cursor.

Definition at line 370 of file ra8_jpeg_sw_internal.h.

Referenced by internal_br_fill(), internal_dec_decode_scan(), internal_dec_scan_begin(), and internal_js_scan_margin().

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The documentation for this struct was generated from the following file:

• libs/ra8_jpeg/src/ra8_jpeg_sw_internal.h