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libaec
Commit 6f2ffa17 authored by Mathis Rosenhauer's avatar Mathis Rosenhauer
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More explicit casting to shup up VS.

parent 8e055aaa
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Showing with 323 additions and 213 deletions
src/decode.c
View file @ 6f2ffa17
......@@ -86,7 +86,7 @@
/* Reference samples have to be sign extended */ \
state->last_out = (state->last_out ^ m) - m; \
} \
put_##KIND(strm, state->last_out); \
put_##KIND(strm, (uint32_t)state->last_out); \
state->flush_start++; \
} \
\
......@@ -122,7 +122,7 @@
data = xmax - d; \
} \
} \
put_##KIND(strm, data); \
put_##KIND(strm, (uint32_t)data); \
} \
state->last_out = data; \
} else { \
......@@ -135,49 +135,49 @@
static inline void put_msb_32(struct aec_stream *strm, uint32_t data)
{
*strm->next_out++ = data >> 24;
*strm->next_out++ = data >> 16;
*strm->next_out++ = data >> 8;
*strm->next_out++ = data;
*strm->next_out++ = (unsigned char)(data >> 24);
*strm->next_out++ = (unsigned char)(data >> 16);
*strm->next_out++ = (unsigned char)(data >> 8);
*strm->next_out++ = (unsigned char)data;
}
static inline void put_msb_24(struct aec_stream *strm, uint32_t data)
{
*strm->next_out++ = data >> 16;
*strm->next_out++ = data >> 8;
*strm->next_out++ = data;
*strm->next_out++ = (unsigned char)(data >> 16);
*strm->next_out++ = (unsigned char)(data >> 8);
*strm->next_out++ = (unsigned char)data;
}
static inline void put_msb_16(struct aec_stream *strm, uint32_t data)
{
*strm->next_out++ = data >> 8;
*strm->next_out++ = data;
*strm->next_out++ = (unsigned char)(data >> 8);
*strm->next_out++ = (unsigned char)data;
}
static inline void put_lsb_32(struct aec_stream *strm, uint32_t data)
{
*strm->next_out++ = data;
*strm->next_out++ = data >> 8;
*strm->next_out++ = data >> 16;
*strm->next_out++ = data >> 24;
*strm->next_out++ = (unsigned char)data;
*strm->next_out++ = (unsigned char)(data >> 8);
*strm->next_out++ = (unsigned char)(data >> 16);
*strm->next_out++ = (unsigned char)(data >> 24);
}
static inline void put_lsb_24(struct aec_stream *strm, uint32_t data)
{
*strm->next_out++ = data;
*strm->next_out++ = data >> 8;
*strm->next_out++ = data >> 16;
*strm->next_out++ = (unsigned char)data;
*strm->next_out++ = (unsigned char)(data >> 8);
*strm->next_out++ = (unsigned char)(data >> 16);
}
static inline void put_lsb_16(struct aec_stream *strm, uint32_t data)
{
*strm->next_out++ = data;
*strm->next_out++ = data >> 8;
*strm->next_out++ = (unsigned char)data;
*strm->next_out++ = (unsigned char)(data >> 8);
}
static inline void put_8(struct aec_stream *strm, uint32_t data)
{
*strm->next_out++ = data;
*strm->next_out++ = (unsigned char)data;
}
FLUSH(msb_32)
......@@ -195,7 +195,7 @@ static inline void check_rsi_end(struct aec_stream *strm)
*/
struct internal_state *state = strm->state;
if (state->rsip - state->rsi_buffer == state->rsi_size) {
if (state->rsi_size == (size_t)(state->rsip - state->rsi_buffer)) {
state->flush_output(strm);
state->flush_start = state->rsi_buffer;
state->rsip = state->rsi_buffer;
......@@ -237,7 +237,7 @@ static inline void fill_acc(struct aec_stream *strm)
}
static inline uint32_t direct_get(struct aec_stream *strm, unsigned int n)
static inline uint32_t direct_get(struct aec_stream *strm, int n)
{
/**
Get n bit from input stream
......@@ -264,8 +264,10 @@ static inline uint32_t direct_get_fs(struct aec_stream *strm)
*/
uint32_t fs = 0;
#if HAVE_DECL___BUILTIN_CLZLL||HAVE_BSR64
uint32_t lz;
#if HAVE_DECL___BUILTIN_CLZLL
int lz;
#elif HAVE_BSR64
unsigned long lz;
#endif
struct internal_state *state = strm->state;
......@@ -413,7 +415,7 @@ static int m_split_fs(struct aec_stream *strm)
static int m_split(struct aec_stream *strm)
{
int i, k;
uint32_t i, k;
struct internal_state *state = strm->state;
if (BUFFERSPACE(strm)) {
......@@ -464,7 +466,7 @@ static int m_zero_output(struct aec_stream *strm)
static int m_zero_block(struct aec_stream *strm)
{
int i, zero_blocks, b, zero_bytes;
uint32_t i, zero_blocks, b, zero_bytes;
struct internal_state *state = strm->state;
if (fs_ask(strm) == 0)
......@@ -473,7 +475,7 @@ static int m_zero_block(struct aec_stream *strm)
fs_drop(strm);
if (zero_blocks == ROS) {
b = (state->rsip - state->rsi_buffer) / strm->block_size;
b = (int)(state->rsip - state->rsi_buffer) / strm->block_size;
zero_blocks = MIN(strm->rsi - b, 64 - (b % 64));
} else if (zero_blocks > ROS) {
zero_blocks--;
......@@ -535,7 +537,7 @@ static int m_se_decode(struct aec_stream *strm)
static int m_se(struct aec_stream *strm)
{
int i;
uint32_t i;
int32_t m, d1;
struct internal_state *state = strm->state;
......@@ -605,7 +607,7 @@ static int m_uncomp_copy(struct aec_stream *strm)
static int m_uncomp(struct aec_stream *strm)
{
int i;
uint32_t i;
struct internal_state *state = strm->state;
if (BUFFERSPACE(strm)) {
......@@ -701,7 +703,7 @@ int aec_decode_init(struct aec_stream *strm)
}
if (strm->flags & AEC_DATA_SIGNED) {
state->xmin = -(1ULL << (strm->bits_per_sample - 1));
state->xmin = -(1LL << (strm->bits_per_sample - 1));
state->xmax = (1ULL << (strm->bits_per_sample - 1)) - 1;
} else {
state->xmin = 0;
......
src/decode.h
View file @ 6f2ffa17
......@@ -70,30 +70,69 @@
struct internal_state {
int (*mode)(struct aec_stream *);
int id; /* option ID */
int id_len; /* bit length of code option identification key */
int (**id_table)(struct aec_stream *); /* table maps IDs to states */
/* option ID */
int id;
/* bit length of code option identification key */
int id_len;
/* table maps IDs to states */
int (**id_table)(struct aec_stream *);
void (*flush_output)(struct aec_stream *);
int64_t last_out; /* previous output for post-processing */
int64_t xmin; /* minimum integer for post-processing */
int64_t xmax; /* maximum integer for post-processing */
int in_blklen; /* length of uncompressed input block
should be the longest possible block */
int out_blklen; /* length of output block in bytes */
int n, i; /* counter for samples */
uint64_t acc; /* accumulator for currently used bit sequence */
int bitp; /* bit pointer to the next unused bit in
accumulator */
int fs; /* last fundamental sequence in accumulator */
int ref; /* 1 if current block has reference sample */
int pp; /* 1 if postprocessor has to be used */
int bytes_per_sample; /* storage size of samples in bytes */
uint32_t *rsi_buffer; /* output buffer holding one reference
sample interval */
uint32_t *rsip; /* current position of output in rsi_buffer */
size_t rsi_size; /* rsi in bytes */
uint32_t *flush_start; /* first not yet flushed byte in rsi_buffer */
int se_table[182]; /* table for decoding second extension option */
/* previous output for post-processing */
int64_t last_out;
/* minimum integer for post-processing */
int64_t xmin;
/* maximum integer for post-processing */
int64_t xmax;
/* length of uncompressed input block should be the longest
possible block */
uint32_t in_blklen;
/* length of output block in bytes */
uint32_t out_blklen;
/* counter for samples */
uint32_t n, i;
/* accumulator for currently used bit sequence */
uint64_t acc;
/* bit pointer to the next unused bit in accumulator */
int bitp;
/* last fundamental sequence in accumulator */
int fs;
/* 1 if current block has reference sample */
int ref;
/* 1 if postprocessor has to be used */
int pp;
/* storage size of samples in bytes */
uint32_t bytes_per_sample;
/* output buffer holding one reference sample interval */
uint32_t *rsi_buffer;
/* current position of output in rsi_buffer */
uint32_t *rsip;
/* rsi in bytes */
size_t rsi_size;
/* first not yet flushed byte in rsi_buffer */
uint32_t *flush_start;
/* table for decoding second extension option */
int se_table[182];
} decode_state;
#endif /* DECODE_H */
src/encode.c
View file @ 6f2ffa17
......@@ -70,18 +70,18 @@ static inline void emit(struct internal_state *state,
if (bits <= state->bits) {
state->bits -= bits;
*state->cds += data << state->bits;
*state->cds += (uint8_t)(data << state->bits);
} else {
bits -= state->bits;
*state->cds++ += (uint64_t)data >> bits;
*state->cds++ += (uint8_t)((uint64_t)data >> bits);
while (bits > 8) {
bits -= 8;
*state->cds++ = data >> bits;
*state->cds++ = (uint8_t)(data >> bits);
}
state->bits = 8 - bits;
*state->cds = data << state->bits;
*state->cds = (uint8_t)(data << state->bits);
}
}
......@@ -108,20 +108,20 @@ static inline void emitfs(struct internal_state *state, int fs)
static inline void copy64(uint8_t *dst, uint64_t src)
{
dst[0] = src >> 56;
dst[1] = src >> 48;
dst[2] = src >> 40;
dst[3] = src >> 32;
dst[4] = src >> 24;
dst[5] = src >> 16;
dst[6] = src >> 8;
dst[7] = src;
dst[0] = (uint8_t)(src >> 56);
dst[1] = (uint8_t)(src >> 48);
dst[2] = (uint8_t)(src >> 40);
dst[3] = (uint8_t)(src >> 32);
dst[4] = (uint8_t)(src >> 24);
dst[5] = (uint8_t)(src >> 16);
dst[6] = (uint8_t)(src >> 8);
dst[7] = (uint8_t)src;
}
static inline void emitblock_fs(struct aec_stream *strm, int k, int ref)
{
int i;
int used; /* used bits in 64 bit accumulator */
uint32_t i;
uint32_t used; /* used bits in 64 bit accumulator */
uint64_t acc; /* accumulator */
struct internal_state *state = strm->state;
......@@ -171,57 +171,57 @@ static inline void emitblock(struct aec_stream *strm, int k, int ref)
switch (p & ~7) {
case 0:
o[0] = a >> 56;
o[1] = a >> 48;
o[2] = a >> 40;
o[3] = a >> 32;
o[4] = a >> 24;
o[5] = a >> 16;
o[6] = a >> 8;
o[0] = (uint8_t)(a >> 56);
o[1] = (uint8_t)(a >> 48);
o[2] = (uint8_t)(a >> 40);
o[3] = (uint8_t)(a >> 32);
o[4] = (uint8_t)(a >> 24);
o[5] = (uint8_t)(a >> 16);
o[6] = (uint8_t)(a >> 8);
o += 7;
break;
case 8:
o[0] = a >> 56;
o[1] = a >> 48;
o[2] = a >> 40;
o[3] = a >> 32;
o[4] = a >> 24;
o[5] = a >> 16;
o[0] = (uint8_t)(a >> 56);
o[1] = (uint8_t)(a >> 48);
o[2] = (uint8_t)(a >> 40);
o[3] = (uint8_t)(a >> 32);
o[4] = (uint8_t)(a >> 24);
o[5] = (uint8_t)(a >> 16);
a >>= 8;
o += 6;
break;
case 16:
o[0] = a >> 56;
o[1] = a >> 48;
o[2] = a >> 40;
o[3] = a >> 32;
o[4] = a >> 24;
o[0] = (uint8_t)(a >> 56);
o[1] = (uint8_t)(a >> 48);
o[2] = (uint8_t)(a >> 40);
o[3] = (uint8_t)(a >> 32);
o[4] = (uint8_t)(a >> 24);
a >>= 16;
o += 5;
break;
case 24:
o[0] = a >> 56;
o[1] = a >> 48;
o[2] = a >> 40;
o[3] = a >> 32;
o[0] = (uint8_t)(a >> 56);
o[1] = (uint8_t)(a >> 48);
o[2] = (uint8_t)(a >> 40);
o[3] = (uint8_t)(a >> 32);
a >>= 24;
o += 4;
break;
case 32:
o[0] = a >> 56;
o[1] = a >> 48;
o[2] = a >> 40;
o[0] = (uint8_t)(a >> 56);
o[1] = (uint8_t)(a >> 48);
o[2] = (uint8_t)(a >> 40);
a >>= 32;
o += 3;
break;
case 40:
o[0] = a >> 56;
o[1] = a >> 48;
o[0] = (uint8_t)(a >> 56);
o[1] = (uint8_t)(a >> 48);
a >>= 40;
o += 2;
break;
case 48:
*o++ = a >> 56;
*o++ = (uint8_t)(a >> 56);
a >>= 48;
break;
default:
......@@ -230,7 +230,7 @@ static inline void emitblock(struct aec_stream *strm, int k, int ref)
}
}
*o = a;
*o = (uint8_t)a;
state->cds = o;
state->bits = p % 8;
}
......@@ -248,9 +248,9 @@ static void preprocess_unsigned(struct aec_stream *strm)
struct internal_state *state = strm->state;
const uint32_t *restrict x = state->data_raw;
uint32_t *restrict d = state->data_pp;
uint32_t xmax = state->xmax;
uint32_t xmax = (uint32_t)state->xmax;
uint32_t rsi = strm->rsi * strm->block_size - 1;
int i;
unsigned int i;
d[0] = x[0];
for (i = 0; i < rsi; i++) {
......@@ -282,11 +282,11 @@ static void preprocess_signed(struct aec_stream *strm)
struct internal_state *state = strm->state;
uint32_t *restrict d = state->data_pp;
int32_t *restrict x = (int32_t *)state->data_raw;
uint64_t m = 1ULL << (strm->bits_per_sample - 1);
uint32_t m = 1ULL << (strm->bits_per_sample - 1);
int64_t xmax = state->xmax;
int64_t xmin = state->xmin;
uint32_t rsi = strm->rsi * strm->block_size - 1;
int i;
unsigned int i;
d[0] = (uint32_t)x[0];
x[0] = (x[0] ^ m) - m;
......@@ -296,15 +296,15 @@ static void preprocess_signed(struct aec_stream *strm)
if (x[i + 1] < x[i]) {
D = (int64_t)x[i] - x[i + 1];
if (D <= xmax - x[i])
d[i + 1] = 2 * D - 1;
d[i + 1] = 2 * (uint32_t)D - 1;
else
d[i + 1] = xmax - x[i + 1];
d[i + 1] = (uint32_t)xmax - x[i + 1];
} else {
D = (int64_t)x[i + 1] - x[i];
if (D <= x[i] - xmin)
d[i + 1] = 2 * D;
d[i + 1] = 2 * (uint32_t)D;
else
d[i + 1] = x[i + 1] - xmin;
d[i + 1] = x[i + 1] - (uint32_t)xmin;
}
}
state->ref = 1;
......@@ -317,7 +317,7 @@ static inline uint64_t block_fs(struct aec_stream *strm, int k)
Sum FS of all samples in block for given splitting position.
*/
int i;
uint32_t i;
uint64_t fs = 0;
struct internal_state *state = strm->state;
......@@ -410,7 +410,7 @@ static uint32_t assess_splitting_option(struct aec_stream *strm)
}
state->k = k_min;
return len_min;
return (uint32_t)len_min;
}
static uint32_t assess_se_option(struct aec_stream *strm)
......@@ -421,9 +421,9 @@ static uint32_t assess_se_option(struct aec_stream *strm)
If length is above limit just return UINT32_MAX.
*/
int i;
uint64_t d;
uint32_t i;
uint32_t len;
uint64_t d;
struct internal_state *state = strm->state;
len = 1;
......@@ -439,7 +439,8 @@ static uint32_t assess_se_option(struct aec_stream *strm)
len = UINT32_MAX;
break;
} else {
len += d * (d + 1) / 2 + state->block[i + 1] + 1;
len += (uint32_t)d * ((uint32_t)d + 1)
/ 2 + state->block[i + 1] + 1;
}
}
return len;
......@@ -483,7 +484,8 @@ static int m_flush_block_resumable(struct aec_stream *strm)
*/
struct internal_state *state = strm->state;
int n = MIN(state->cds - state->cds_buf - state->i, strm->avail_out);
int n = (int)MIN((size_t)(state->cds - state->cds_buf - state->i),
strm->avail_out);
memcpy(strm->next_out, state->cds_buf + state->i, n);
strm->next_out += n;
strm->avail_out -= n;
......@@ -516,7 +518,7 @@ static int m_flush_block(struct aec_stream *strm)
#endif
if (state->direct_out) {
n = state->cds - strm->next_out;
n = (int)(state->cds - strm->next_out);
strm->next_out += n;
strm->avail_out -= n;
state->mode = m_get_block;
......@@ -555,7 +557,7 @@ static int m_encode_uncomp(struct aec_stream *strm)
static int m_encode_se(struct aec_stream *strm)
{
int i;
uint32_t i;
uint32_t d;
struct internal_state *state = strm->state;
......@@ -631,7 +633,7 @@ static int m_check_zero_block(struct aec_stream *strm)
end of a segment or RSI.
*/
int i;
uint32_t i;
struct internal_state *state = strm->state;
uint32_t *p = state->block;
......@@ -861,7 +863,7 @@ int aec_encode_init(struct aec_stream *strm)
state->rsi_len = strm->rsi * strm->block_size * state->bytes_per_sample;
if (strm->flags & AEC_DATA_SIGNED) {
state->xmin = -(1ULL << (strm->bits_per_sample - 1));
state->xmin = -(1LL << (strm->bits_per_sample - 1));
state->xmax = (1ULL << (strm->bits_per_sample - 1)) - 1;
state->preprocess = preprocess_signed;
} else {
......@@ -922,7 +924,7 @@ int aec_encode(struct aec_stream *strm, int flush)
while (state->mode(strm) == M_CONTINUE);
if (state->direct_out) {
n = state->cds - strm->next_out;
n = (int)(state->cds - strm->next_out);
strm->next_out += n;
strm->avail_out -= n;
......
src/encode.h
View file @ 6f2ffa17
......@@ -79,37 +79,79 @@ struct internal_state {
void (*get_rsi)(struct aec_stream *);
void (*preprocess)(struct aec_stream *);
int id_len; /* bit length of code option identification key */
int64_t xmin; /* minimum integer for preprocessing */
int64_t xmax; /* maximum integer for preprocessing */
int i; /* counter */
uint32_t *data_pp; /* RSI blocks of preprocessed input */
uint32_t *data_raw; /* RSI blocks of input */
int blocks_avail; /* remaining blocks in buffer */
uint32_t *block; /* current (preprocessed) input block */
int rsi_len; /* reference sample interval in byte */
uint8_t *cds; /* current Coded Data Set output */
uint8_t cds_buf[CDSLEN];/* buffer for one CDS (only used if
* strm->next_out cannot hold full CDS) */
int direct_out; /* cds points to strm->next_out (1)
* or cds_buf (0) */
int bits; /* Free bits (LSB) in output buffer or
* accumulator */
int ref; /* length of reference sample in current
* block i.e. 0 or 1 depending on whether
* the block has a reference sample or
* not */
int zero_ref; /* current zero block has a reference sample */
uint32_t zero_ref_sample;/* reference sample of zero block */
int bytes_per_sample; /* storage size of samples in bytes */
int zero_blocks; /* number of contiguous zero blocks */
int block_nonzero; /* 1 if this is the first non-zero block
* after one or more zero blocks */
int k; /* splitting position */
int kmax; /* maximum number for k depending on id_len */
int flush; /* flush option copied from argument */
int flushed; /* 1 if flushing was successful */
uint32_t uncomp_len; /* length of uncompressed CDS */
/* bit length of code option identification key */
int id_len;
/* minimum integer for preprocessing */
int64_t xmin;
/* maximum integer for preprocessing */
int64_t xmax;
uint32_t i;
/* RSI blocks of preprocessed input */
uint32_t *data_pp;
/* RSI blocks of input */
uint32_t *data_raw;
/* remaining blocks in buffer */
int blocks_avail;
/* current (preprocessed) input block */
uint32_t *block;
/* reference sample interval in byte */
uint32_t rsi_len;
/* current Coded Data Set output */
uint8_t *cds;
/* buffer for one CDS (only used if strm->next_out cannot hold
* full CDS) */
uint8_t cds_buf[CDSLEN];
/* cds points to strm->next_out (1) or cds_buf (0) */
int direct_out;
/* Free bits (LSB) in output buffer or accumulator */
int bits;
/* length of reference sample in current block i.e. 0 or 1
* depending on whether the block has a reference sample or not */
int ref;
/* current zero block has a reference sample */
int zero_ref;
/* reference sample of zero block */
uint32_t zero_ref_sample;
/* storage size of samples in bytes */
uint32_t bytes_per_sample;
/* number of contiguous zero blocks */
int zero_blocks;
/* 1 if this is the first non-zero block after one or more zero
* blocks */
int block_nonzero;
/* splitting position */
int k;
/* maximum number for k depending on id_len */
int kmax;
/* flush option copied from argument */
int flush;
/* 1 if flushing was successful */
int flushed;
/* length of uncompressed CDS */
uint32_t uncomp_len;
};
#endif /* ENCODE_H */
src/libaec.h
View file @ 6f2ffa17
......@@ -69,71 +69,88 @@ struct internal_state;
struct aec_stream {
const unsigned char *next_in;
size_t avail_in; /* number of bytes available at
* next_in
*/
size_t total_in; /* total number of input bytes read so
* far
*/
/* number of bytes available at next_in */
size_t avail_in;
/* total number of input bytes read so far */
size_t total_in;
unsigned char *next_out;
size_t avail_out; /* remaining free space at next_out */
size_t total_out; /* total number of bytes output so far */
int bits_per_sample; /* resolution in bits per sample (n =
* 1, ..., 32)
*/
int block_size; /* block size in samples */
int rsi; /* Reference sample interval, the
* number of Coded Data Sets between
* consecutive reference samples (up
* to 4096).
*/
int flags;
/* remaining free space at next_out */
size_t avail_out;
/* total number of bytes output so far */
size_t total_out;
/* resolution in bits per sample (n = 1, ..., 32) */
unsigned int bits_per_sample;
/* block size in samples */
unsigned int block_size;
/* Reference sample interval, the number of Coded Data Sets
* between consecutive reference samples (up to 4096). */
unsigned int rsi;
unsigned int flags;
struct internal_state *state;
};
/*********************************/
/* Sample data description flags */
#define AEC_DATA_SIGNED 1 /* Samples are signed. Telling libaec
* this results in a slightly better
* compression ratio. Default is
* unsigned.
*/
#define AEC_DATA_3BYTE 2 /* 24 bit samples are coded in 3 bytes */
#define AEC_DATA_MSB 4 /* Samples are stored with their most
* significant bit first. This has
* nothing to do with the endianness
* of the host. Default is LSB.
*/
#define AEC_DATA_PREPROCESS 8 /* Set if preprocessor should be used */
#define AEC_RESTRICTED 16 /* Use restricted set of code options */
#define AEC_PAD_RSI 32 /* Pad RSI to byte boundary. Only for
* decoding CCSDS sample data. */
/*********************************/
/* Samples are signed. Telling libaec this results in a slightly