LZW decoding routines. More...
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Data Structures | |
struct | LZWState |
Macros | |
#define | LZW_MAXBITS 12 |
#define | LZW_SIZTABLE (1<<LZW_MAXBITS) |
Functions | |
static int | lzw_get_code (struct LZWState *s) |
const uint8_t * | ff_lzw_cur_ptr (LZWState *p) |
void | ff_lzw_decode_tail (LZWState *p) |
av_cold void | ff_lzw_decode_open (LZWState **p) |
av_cold void | ff_lzw_decode_close (LZWState **p) |
int | ff_lzw_decode_init (LZWState *p, int csize, const uint8_t *buf, int buf_size, int mode) |
Initialize LZW decoder. | |
int | ff_lzw_decode (LZWState *p, uint8_t *buf, int len) |
Decode given number of bytes NOTE: the algorithm here is inspired from the LZW GIF decoder written by Steven A. |
Variables | |
static const uint16_t | mask [17] |
LZW decoding routines.
Definition in file lzw.c.
#define LZW_MAXBITS 12 |
Definition at line 33 of file lzw.c.
Referenced by ff_lzw_decode(), and ff_lzw_decode_init().
#define LZW_SIZTABLE (1<<LZW_MAXBITS) |
const uint8_t* ff_lzw_cur_ptr | ( | LZWState * | p | ) |
Definition at line 94 of file lzw.c.
Referenced by gif_read_image().
int ff_lzw_decode | ( | LZWState * | p, |
uint8_t * | buf, | ||
int | len | ||
) |
Decode given number of bytes NOTE: the algorithm here is inspired from the LZW GIF decoder written by Steven A.
Bennett in 1987.
p | LZW context |
buf | output buffer |
len | number of bytes to decode |
Definition at line 174 of file lzw.c.
Referenced by gif_read_image(), and tiff_unpack_strip().
Definition at line 122 of file lzw.c.
Referenced by gif_decode_close(), and tiff_end().
int ff_lzw_decode_init | ( | LZWState * | p, |
int | csize, | ||
const uint8_t * | buf, | ||
int | buf_size, | ||
int | mode | ||
) |
Initialize LZW decoder.
p | LZW context |
csize | initial code size in bits |
buf | input data |
buf_size | input data size |
mode | decoder working mode - either GIF or TIFF |
Definition at line 135 of file lzw.c.
Referenced by gif_read_image(), and tiff_unpack_strip().
Definition at line 117 of file lzw.c.
Referenced by gif_decode_init(), and tiff_init().
Definition at line 99 of file lzw.c.
Referenced by gif_read_image().
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static |
Definition at line 68 of file lzw.c.
Referenced by ff_lzw_decode().
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static |
Definition at line 36 of file lzw.c.
Referenced by ac3_lshift_int16_c(), adpcm_ima_qt_compress_sample(), av_find_opt(), av_read_image_line(), avg_pixels16_l2_altivec(), binkb_read_bundle(), build_xlaw_table(), check_input_motion(), cinepak_decode_codebook(), cinepak_decode_vectors(), cmp_direct_inline(), decode_13(), decode_bmv_frame(), decode_dds1(), decode_dsw1(), decode_init(), decode_residual(), decode_residual_block(), decode_tsw1(), decodeplane32(), diff_pixels_mvi(), escape124_decode_frame(), ff_acelp_fc_pulse_per_track(), ff_decode_10_pulses_35bits(), ff_draw_pc_font(), ff_er_add_slice(), ff_get_mb_score(), ff_h264_check_intra4x4_pred_mode(), ff_lsb2full(), ff_lzw_decode(), ff_lzw_decode_init(), filter_channel(), get_cabac_bypass_sign(), get_len(), h264_deblock_mask(), init_cavlc_level_tab(), ljpeg_decode_rgb_scan(), mpc8_decode_frame(), mpc8_get_mask(), mszh_decomp(), picmemset(), png_get_interlaced_row(), png_put_interlaced_row(), pp_get_mode_by_name_and_quality(), pred_spatial_direct_motion(), put_pixels16_l2_altivec(), put_swf_line_edge(), put_swf_rect(), read_residue(), rematrix_channels(), rv34_decode_cbp(), rv34_pred_mv_b(), ulti_pattern(), unaligned_load(), vector_fmul_add_altivec(), vertClassify_altivec(), vp56_mc(), vp6_filter(), x8_get_ac_rlf(), and xan_unpack_luma().