sz_compat.c 1.55 KB
Newer Older
1
#include <stdio.h>
Mathis Rosenhauer's avatar
Mathis Rosenhauer committed
2
3
4
5
6
7
#include <stddef.h>
#include "szlib.h"

int SZ_BufftoBuffCompress(void *dest, size_t *destLen, const void *source, size_t sourceLen, SZ_com_t *param)
{
    int status;
Mathis Rosenhauer's avatar
Mathis Rosenhauer committed
8
    struct aec_stream strm;
Mathis Rosenhauer's avatar
Mathis Rosenhauer committed
9
10
11

    strm.bit_per_sample = param->bits_per_pixel;
    strm.block_size = param->pixels_per_block;
12
    strm.rsi = param->pixels_per_scanline / param->pixels_per_block;
13
    strm.flags = param->options_mask;
Mathis Rosenhauer's avatar
Mathis Rosenhauer committed
14
15
16
17
18
    strm.avail_in = sourceLen;
    strm.avail_out = *destLen;
    strm.next_out = dest;
    strm.next_in = source;

Mathis Rosenhauer's avatar
Mathis Rosenhauer committed
19
    if ((status = aec_encode_init(&strm)) != AEC_OK)
Mathis Rosenhauer's avatar
Mathis Rosenhauer committed
20
21
        return status;

Mathis Rosenhauer's avatar
Mathis Rosenhauer committed
22
    if ((status = aec_encode(&strm, AEC_FLUSH)) != AEC_OK)
Mathis Rosenhauer's avatar
Mathis Rosenhauer committed
23
24
        return status;

25
26
    *destLen = strm.total_out;

Mathis Rosenhauer's avatar
Mathis Rosenhauer committed
27
    if ((status = aec_encode_end(&strm)) != AEC_OK)
28
29
        return status;

Mathis Rosenhauer's avatar
Mathis Rosenhauer committed
30
31
32
33
34
35
    return SZ_OK;
}

int SZ_BufftoBuffDecompress(void *dest, size_t *destLen, const void *source, size_t sourceLen, SZ_com_t *param)
{
    int status;
Mathis Rosenhauer's avatar
Mathis Rosenhauer committed
36
    struct aec_stream strm;
Mathis Rosenhauer's avatar
Mathis Rosenhauer committed
37
38
39

    strm.bit_per_sample = param->bits_per_pixel;
    strm.block_size = param->pixels_per_block;
40
    strm.rsi = param->pixels_per_scanline / param->pixels_per_block;
Mathis Rosenhauer's avatar
Mathis Rosenhauer committed
41
42
43
44
45
46
    strm.flags = param->options_mask;
    strm.avail_in = sourceLen;
    strm.avail_out = *destLen;
    strm.next_out = dest;
    strm.next_in = source;

Mathis Rosenhauer's avatar
Mathis Rosenhauer committed
47
    if ((status = aec_decode_init(&strm)) != AEC_OK)
Mathis Rosenhauer's avatar
Mathis Rosenhauer committed
48
49
        return status;

Mathis Rosenhauer's avatar
Mathis Rosenhauer committed
50
    if ((status = aec_decode(&strm, AEC_FLUSH)) != AEC_OK)
Mathis Rosenhauer's avatar
Mathis Rosenhauer committed
51
52
        return status;

53
54
    *destLen = strm.total_out;

Mathis Rosenhauer's avatar
Mathis Rosenhauer committed
55
    if ((status = aec_decode_end(&strm)) != AEC_OK)
56
57
        return status;

Mathis Rosenhauer's avatar
Mathis Rosenhauer committed
58
59
    return SZ_OK;
}