]>
Commit | Line | Data |
---|---|---|
1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com> | |
5 | * Copyright (C) 2011 HÃ¥vard Espeland <gus@ping.uio.no> | |
6 | * | |
7 | * This program is free software: you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation, either version 3 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
19 | */ | |
20 | ||
21 | #include <stdlib.h> | |
22 | #include <string.h> | |
23 | #include <glib.h> | |
24 | #include "libsigrok.h" | |
25 | #include "libsigrok-internal.h" | |
26 | #include "text.h" | |
27 | ||
28 | #define LOG_PREFIX "output/ascii" | |
29 | ||
30 | SR_PRIV int init_ascii(struct sr_output *o) | |
31 | { | |
32 | return init(o, DEFAULT_BPL_ASCII, MODE_ASCII); | |
33 | } | |
34 | ||
35 | SR_PRIV int data_ascii(struct sr_output *o, const uint8_t *data_in, | |
36 | uint64_t length_in, uint8_t **data_out, | |
37 | uint64_t *length_out) | |
38 | { | |
39 | struct context *ctx; | |
40 | unsigned int outsize, offset, p; | |
41 | int max_linelen; | |
42 | const uint8_t *sample; | |
43 | uint8_t *outbuf; | |
44 | ||
45 | ctx = o->internal; | |
46 | max_linelen = SR_MAX_PROBENAME_LEN + 3 + ctx->samples_per_line | |
47 | + ctx->samples_per_line / 8; | |
48 | /* | |
49 | * Calculate space needed for probes. Set aside 512 bytes for | |
50 | * extra output, e.g. trigger. | |
51 | */ | |
52 | outsize = 512 + (1 + (length_in / ctx->unitsize) / ctx->samples_per_line) | |
53 | * (ctx->num_enabled_probes * max_linelen); | |
54 | ||
55 | if (!(outbuf = g_try_malloc0(outsize + 1))) { | |
56 | sr_err("%s: outbuf malloc failed", __func__); | |
57 | return SR_ERR_MALLOC; | |
58 | } | |
59 | ||
60 | outbuf[0] = '\0'; | |
61 | if (ctx->header) { | |
62 | /* The header is still here, this must be the first packet. */ | |
63 | strncpy((char *)outbuf, ctx->header, outsize); | |
64 | g_free(ctx->header); | |
65 | ctx->header = NULL; | |
66 | } | |
67 | ||
68 | if (length_in >= ctx->unitsize) { | |
69 | for (offset = 0; offset <= length_in - ctx->unitsize; | |
70 | offset += ctx->unitsize) { | |
71 | sample = data_in + offset; | |
72 | ||
73 | char tmpval[ctx->num_enabled_probes]; | |
74 | ||
75 | for (p = 0; p < ctx->num_enabled_probes; p++) { | |
76 | uint8_t curbit = (sample[p / 8] & ((uint8_t) 1 << (p % 8))); | |
77 | uint8_t prevbit = (ctx->prevsample[p / 8] & | |
78 | ((uint8_t) 1 << (p % 8))); | |
79 | ||
80 | if (curbit < prevbit && ctx->line_offset > 0) { | |
81 | ctx->linebuf[p * ctx->linebuf_len + | |
82 | ctx->line_offset-1] = '\\'; | |
83 | } | |
84 | ||
85 | if (curbit > prevbit) { | |
86 | tmpval[p] = '/'; | |
87 | } else { | |
88 | if (curbit) | |
89 | tmpval[p] = '"'; | |
90 | else | |
91 | tmpval[p] = '.'; | |
92 | } | |
93 | } | |
94 | ||
95 | /* End of line. */ | |
96 | if (ctx->spl_cnt >= ctx->samples_per_line) { | |
97 | flush_linebufs(ctx, outbuf); | |
98 | ctx->line_offset = ctx->spl_cnt = 0; | |
99 | ctx->mark_trigger = -1; | |
100 | } | |
101 | ||
102 | for (p = 0; p < ctx->num_enabled_probes; p++) { | |
103 | ctx->linebuf[p * ctx->linebuf_len + | |
104 | ctx->line_offset] = tmpval[p]; | |
105 | } | |
106 | ||
107 | ctx->line_offset++; | |
108 | ctx->spl_cnt++; | |
109 | ||
110 | memcpy(ctx->prevsample, sample, ctx->unitsize); | |
111 | } | |
112 | } else { | |
113 | sr_info("Short buffer (length_in=%" PRIu64 ").", length_in); | |
114 | } | |
115 | ||
116 | *data_out = outbuf; | |
117 | *length_out = strlen((const char *)outbuf); | |
118 | ||
119 | return SR_OK; | |
120 | } | |
121 | ||
122 | SR_PRIV struct sr_output_format output_text_ascii = { | |
123 | .id = "ascii", | |
124 | .description = "ASCII", | |
125 | .df_type = SR_DF_LOGIC, | |
126 | .init = init_ascii, | |
127 | .data = data_ascii, | |
128 | .event = event, | |
129 | .cleanup = text_cleanup, | |
130 | }; |