#include "avcodec.h"
#include "lzw.h"
Go to the source code of this file.
Data Structures | |
| struct | LZWState |
Defines | |
| #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] |
Definition in file lzw.c.
| #define LZW_MAXBITS 12 |
Definition at line 33 of file lzw.c.
Referenced by ff_lzw_decode(), ff_lzw_decode_init(), and ff_lzw_encode_init().
| const uint8_t* ff_lzw_cur_ptr | ( | LZWState * | p | ) |
| 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().
| 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.
| 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().
| av_cold void ff_lzw_decode_open | ( | LZWState ** | p | ) |
| void ff_lzw_decode_tail | ( | LZWState * | p | ) |
| static int lzw_get_code | ( | struct LZWState * | s | ) | [static] |
const uint16_t mask[17] [static] |
Initial value:
{
0x0000, 0x0001, 0x0003, 0x0007,
0x000F, 0x001F, 0x003F, 0x007F,
0x00FF, 0x01FF, 0x03FF, 0x07FF,
0x0FFF, 0x1FFF, 0x3FFF, 0x7FFF, 0xFFFF
}
Definition at line 36 of file lzw.c.
Referenced by ac3_lshift_int16_c(), av_read_image_line(), avg_pixels16_l2_altivec(), binkb_read_bundle(), check_input_motion(), cinepak_decode_codebook(), cinepak_decode_vectors(), cmp_direct_inline(), decode_13(), decode_bmv_frame(), decode_clnpass(), decode_dds1(), decode_dsw1(), decode_init(), decode_residual(), decode_residual_block(), decode_sigpass(), decode_tsw1(), decodeplane32(), destroy_masks(), diff_pixels_mvi(), encode_clnpass(), encode_codeword(), encode_refpass(), encode_sigpass(), 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_blur(), get_cabac_bypass_sign(), h264_deblock_mask(), init_cavlc_level_tab(), init_luts(), initialize_masks(), 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_mv(), 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(), x8_get_ac_rlf(), and xan_unpack_luma().
1.5.8