32 #define CCITT_SYMS 104
35 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
36 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25,
37 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38,
38 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51,
39 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64,
40 128, 192, 256, 320, 384, 448, 512, 576, 640, 704, 768, 832, 896,
41 960, 1024, 1088, 1152, 1216, 1280, 1344, 1408, 1472, 1536, 1600, 1664, 1728,
42 1792, 1856, 1920, 1984, 2048, 2112, 2176, 2240, 2304, 2368, 2432, 2496, 2560
48 0x35, 0x07, 0x07, 0x08, 0x0B, 0x0C, 0x0E, 0x0F, 0x13, 0x14, 0x07, 0x08, 0x08,
49 0x03, 0x34, 0x35, 0x2A, 0x2B, 0x27, 0x0C, 0x08, 0x17, 0x03, 0x04, 0x28, 0x2B,
50 0x13, 0x24, 0x18, 0x02, 0x03, 0x1A, 0x1B, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
51 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x04, 0x05, 0x0A, 0x0B, 0x52, 0x53, 0x54,
52 0x55, 0x24, 0x25, 0x58, 0x59, 0x5A, 0x5B, 0x4A, 0x4B, 0x32, 0x33, 0x34, 0x1B,
53 0x12, 0x17, 0x37, 0x36, 0x37, 0x64, 0x65, 0x68, 0x67, 0xCC, 0xCD, 0xD2, 0xD3,
54 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xDB, 0x98, 0x99, 0x9A, 0x18, 0x9B,
55 0x08, 0x0C, 0x0D, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x1C, 0x1D, 0x1E, 0x1F
58 0x37, 0x02, 0x03, 0x02, 0x03, 0x03, 0x02, 0x03, 0x05, 0x04, 0x04, 0x05, 0x07,
59 0x04, 0x07, 0x18, 0x17, 0x18, 0x08, 0x67, 0x68, 0x6C, 0x37, 0x28, 0x17, 0x18,
60 0xCA, 0xCB, 0xCC, 0xCD, 0x68, 0x69, 0x6A, 0x6B, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6,
61 0xD7, 0x6C, 0x6D, 0xDA, 0xDB, 0x54, 0x55, 0x56, 0x57, 0x64, 0x65, 0x52, 0x53,
62 0x24, 0x37, 0x38, 0x27, 0x28, 0x58, 0x59, 0x2B, 0x2C, 0x5A, 0x66, 0x67, 0x0F,
63 0xC8, 0xC9, 0x5B, 0x33, 0x34, 0x35, 0x6C, 0x6D, 0x4A, 0x4B, 0x4C, 0x4D, 0x72,
64 0x73, 0x74, 0x75, 0x76, 0x77, 0x52, 0x53, 0x54, 0x55, 0x5A, 0x5B, 0x64, 0x65,
65 0x08, 0x0C, 0x0D, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x1C, 0x1D, 0x1E, 0x1F
72 8, 6, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 7, 7,
73 7, 7, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
74 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
75 8, 8, 8, 8, 5, 5, 6, 7, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9,
76 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 9, 11, 11, 11, 12, 12, 12, 12, 12, 12,
80 10, 3, 2, 2, 3, 4, 4, 5, 6, 6, 7, 7, 7, 8, 8, 9, 10, 10, 10, 11,
81 11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
82 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
83 12, 12, 12, 12, 10, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 13, 13, 13,
84 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 11, 11, 11, 12, 12, 12, 12, 12, 12,
90 1, 1, 2, 2, 2, 1, 3, 3, 3, 1, 1
94 4, 3, 7, 6, 3, 1, 3, 6, 7, 7, 9
101 static VLC_TYPE code_table1[528][2];
102 static VLC_TYPE code_table2[648][2];
104 static int initialized = 0;
108 ccitt_vlc[0].
table = code_table1;
110 ccitt_vlc[1].
table = code_table2;
112 for (i = 0; i < 2; i++) {
127 unsigned int pix_left,
int *runs,
131 unsigned int run = 0;
138 if (runs >= runend) {
142 if (pix_left <= run) {
151 }
else if ((
int)t == -1) {
161 unsigned int width,
int *runs,
162 const int *runend,
const int *ref)
164 int mode = 0, saved_run = 0,
t;
165 int run_off = *ref++;
166 unsigned int offs = 0,
run = 0;
168 while (offs < width) {
177 run = run_off - offs;
186 }
else if (cmode == 1) {
188 for (k = 0; k < 2; k++) {
200 *runs++ =
run + saved_run;
201 if (runs >= runend) {
207 if (offs > width ||
run > width) {
213 }
else if (cmode == 9 || cmode == 10) {
217 run = run_off - offs + (cmode - 5);
220 if (offs > width ||
run > width) {
224 *runs++ =
run + saved_run;
225 if (runs >= runend) {
233 while (offs < width && run_off <= offs) {
240 if (runs >= runend) {
255 while (pix_left > 0) {
256 run = runs[run_idx++];
259 for (; run > 16; run -= 16)
269 unsigned int state = -1;
271 while (srcsize-- > 0) {
273 if ((state & 0xFFF) == 1)
285 int *runs, *ref = NULL, *runend;
287 int runsize = avctx->
width + 2;
290 runs =
av_malloc(runsize *
sizeof(runs[0]));
291 ref =
av_malloc(runsize *
sizeof(ref[0]));
296 ref[0] = avctx->
width;
302 for (j = 0; j <
height; j++) {
303 runend = runs + runsize;
310 int g3d1 = (compr ==
TIFF_G3) && !(opts & 1);
static int find_group3_syncmarker(GetBitContext *gb, int srcsize)
#define AVERROR_PATCHWELCOME
static int decode_group3_1d_line(AVCodecContext *avctx, GetBitContext *gb, unsigned int pix_left, int *runs, const int *runend)
static void put_sbits(PutBitContext *pb, int n, int32_t value)
static struct endianess table[]
static void put_line(uint8_t *dst, int size, int width, const int *runs)
void av_log(void *avcl, int level, const char *fmt,...) av_printf_format(3
Send the specified message to the log if the level is less than or equal to the current av_log_level...
static int decode_group3_2d_line(AVCodecContext *avctx, GetBitContext *gb, unsigned int width, int *runs, const int *runend, const int *ref)
static const uint8_t ccitt_group3_2d_bits[11]
av_cold void ff_ccitt_unpack_init(void)
initialize upacker code
int ff_init_vlc_sparse(VLC *vlc, int nb_bits, int nb_codes, const void *bits, int bits_wrap, int bits_size, const void *codes, int codes_wrap, int codes_size, const void *symbols, int symbols_wrap, int symbols_size, int flags)
#define INIT_VLC_STATIC(vlc, bits, a, b, c, d, e, f, g, static_size)
static int get_bits_count(const GetBitContext *s)
bitstream reader API header.
#define FFSWAP(type, a, b)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
void av_free(void *ptr)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc(). ...
static const uint16_t ccitt_syms[CCITT_SYMS]
static const uint8_t ccitt_codes_bits[2][CCITT_SYMS]
int ff_ccitt_unpack(AVCodecContext *avctx, const uint8_t *src, int srcsize, uint8_t *dst, int height, int stride, enum TiffCompr compr, int opts)
unpack data compressed with CCITT Group 3 1/2-D or Group 4 method
Libavcodec external API header.
int err_recognition
Error recognition; may misdetect some more or less valid parts as errors.
int width
picture width / height.
void * av_malloc(size_t size) av_malloc_attrib 1(1)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
static unsigned int show_bits(GetBitContext *s, int n)
Show 1-25 bits.
static av_always_inline int get_vlc2(GetBitContext *s, VLC_TYPE(*table)[2], int bits, int max_depth)
Parse a vlc code.
#define INIT_VLC_USE_NEW_STATIC
static VLC ccitt_group3_2d_vlc
TiffCompr
list of TIFF compression types
main external API structure.
#define AV_EF_EXPLODE
abort decoding on minor error detection
static unsigned int get_bits1(GetBitContext *s)
BYTE int const BYTE int int int height
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
static const uint8_t ccitt_group3_2d_lens[11]
void avpriv_report_missing_feature(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
static const uint8_t ccitt_codes_lens[2][CCITT_SYMS]
static void flush_put_bits(PutBitContext *s)
Pad the end of the output stream with zeros.
static void init_put_bits(PutBitContext *s, uint8_t *buffer, int buffer_size)
Initialize the PutBitContext s.
#define AVERROR_INVALIDDATA
VLC_TYPE(* table)[2]
code, bits
static const uint8_t * align_get_bits(GetBitContext *s)
CCITT Fax Group 3 and 4 decompression.