diff options
Diffstat (limited to 'apps/codecs/dumb/src/core/readduh.c')
-rw-r--r-- | apps/codecs/dumb/src/core/readduh.c | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/apps/codecs/dumb/src/core/readduh.c b/apps/codecs/dumb/src/core/readduh.c new file mode 100644 index 0000000000..514b04a077 --- /dev/null +++ b/apps/codecs/dumb/src/core/readduh.c | |||
@@ -0,0 +1,107 @@ | |||
1 | /* _______ ____ __ ___ ___ | ||
2 | * \ _ \ \ / \ / \ \ / / ' ' ' | ||
3 | * | | \ \ | | || | \/ | . . | ||
4 | * | | | | | | || ||\ /| | | ||
5 | * | | | | | | || || \/ | | ' ' ' | ||
6 | * | | | | | | || || | | . . | ||
7 | * | |_/ / \ \__// || | | | ||
8 | * /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque | ||
9 | * / \ | ||
10 | * / . \ | ||
11 | * readduh.c - Code to read a DUH from an open / / \ \ | ||
12 | * file. | < / \_ | ||
13 | * | \/ /\ / | ||
14 | * By entheh. \_ / > / | ||
15 | * | \ / / | ||
16 | * | ' / | ||
17 | * \__/ | ||
18 | */ | ||
19 | |||
20 | #include <stdlib.h> | ||
21 | |||
22 | #include "dumb.h" | ||
23 | #include "internal/dumb.h" | ||
24 | |||
25 | |||
26 | |||
27 | static DUH_SIGNAL *read_signal(DUH *duh, DUMBFILE *f) | ||
28 | { | ||
29 | DUH_SIGNAL *signal; | ||
30 | long type; | ||
31 | |||
32 | signal = malloc(sizeof(*signal)); | ||
33 | |||
34 | if (!signal) | ||
35 | return NULL; | ||
36 | |||
37 | type = dumbfile_mgetl(f); | ||
38 | if (dumbfile_error(f)) { | ||
39 | free(signal); | ||
40 | return NULL; | ||
41 | } | ||
42 | |||
43 | signal->desc = _dumb_get_sigtype_desc(type); | ||
44 | if (!signal->desc) { | ||
45 | free(signal); | ||
46 | return NULL; | ||
47 | } | ||
48 | |||
49 | if (signal->desc->load_sigdata) { | ||
50 | signal->sigdata = (*signal->desc->load_sigdata)(duh, f); | ||
51 | if (!signal->sigdata) { | ||
52 | free(signal); | ||
53 | return NULL; | ||
54 | } | ||
55 | } else | ||
56 | signal->sigdata = NULL; | ||
57 | |||
58 | return signal; | ||
59 | } | ||
60 | |||
61 | |||
62 | |||
63 | /* read_duh(): reads a DUH from an already open DUMBFILE, and returns its | ||
64 | * pointer, or null on error. The file is not closed. | ||
65 | */ | ||
66 | DUH *read_duh(DUMBFILE *f) | ||
67 | { | ||
68 | DUH *duh; | ||
69 | int i; | ||
70 | |||
71 | if (dumbfile_mgetl(f) != DUH_SIGNATURE) | ||
72 | return NULL; | ||
73 | |||
74 | duh = malloc(sizeof(*duh)); | ||
75 | if (!duh) | ||
76 | return NULL; | ||
77 | |||
78 | duh->length = dumbfile_igetl(f); | ||
79 | if (dumbfile_error(f) || duh->length <= 0) { | ||
80 | free(duh); | ||
81 | return NULL; | ||
82 | } | ||
83 | |||
84 | duh->n_signals = dumbfile_igetl(f); | ||
85 | if (dumbfile_error(f) || duh->n_signals <= 0) { | ||
86 | free(duh); | ||
87 | return NULL; | ||
88 | } | ||
89 | |||
90 | duh->signal = malloc(sizeof(*duh->signal) * duh->n_signals); | ||
91 | if (!duh->signal) { | ||
92 | free(duh); | ||
93 | return NULL; | ||
94 | } | ||
95 | |||
96 | for (i = 0; i < duh->n_signals; i++) | ||
97 | duh->signal[i] = NULL; | ||
98 | |||
99 | for (i = 0; i < duh->n_signals; i++) { | ||
100 | if (!(duh->signal[i] = read_signal(duh, f))) { | ||
101 | unload_duh(duh); | ||
102 | return NULL; | ||
103 | } | ||
104 | } | ||
105 | |||
106 | return duh; | ||
107 | } | ||