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1 | /* | |
2 | * This file is part of the sigrok 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 | /* Message logging helpers with driver-specific prefix string. */ | |
29 | #define DRIVER_LOG_DOMAIN "output/hex: " | |
30 | #define sr_log(l, s, args...) sr_log(l, DRIVER_LOG_DOMAIN s, ## args) | |
31 | #define sr_spew(s, args...) sr_spew(DRIVER_LOG_DOMAIN s, ## args) | |
32 | #define sr_dbg(s, args...) sr_dbg(DRIVER_LOG_DOMAIN s, ## args) | |
33 | #define sr_info(s, args...) sr_info(DRIVER_LOG_DOMAIN s, ## args) | |
34 | #define sr_warn(s, args...) sr_warn(DRIVER_LOG_DOMAIN s, ## args) | |
35 | #define sr_err(s, args...) sr_err(DRIVER_LOG_DOMAIN s, ## args) | |
36 | ||
37 | SR_PRIV int init_hex(struct sr_output *o) | |
38 | { | |
39 | return init(o, DEFAULT_BPL_HEX, MODE_HEX); | |
40 | } | |
41 | ||
42 | SR_PRIV int data_hex(struct sr_output *o, const uint8_t *data_in, | |
43 | uint64_t length_in, uint8_t **data_out, | |
44 | uint64_t *length_out) | |
45 | { | |
46 | struct context *ctx; | |
47 | unsigned int outsize, offset, p; | |
48 | int max_linelen; | |
49 | uint64_t sample; | |
50 | uint8_t *outbuf; | |
51 | ||
52 | ctx = o->internal; | |
53 | max_linelen = SR_MAX_PROBENAME_LEN + 3 + ctx->samples_per_line | |
54 | + ctx->samples_per_line / 2; | |
55 | outsize = length_in / ctx->unitsize * ctx->num_enabled_probes | |
56 | / ctx->samples_per_line * max_linelen + 512; | |
57 | ||
58 | if (!(outbuf = g_try_malloc0(outsize + 1))) { | |
59 | sr_err("%s: outbuf malloc failed", __func__); | |
60 | return SR_ERR_MALLOC; | |
61 | } | |
62 | ||
63 | outbuf[0] = '\0'; | |
64 | if (ctx->header) { | |
65 | /* The header is still here, this must be the first packet. */ | |
66 | strncpy((char *)outbuf, ctx->header, outsize); | |
67 | g_free(ctx->header); | |
68 | ctx->header = NULL; | |
69 | } | |
70 | ||
71 | ctx->line_offset = 0; | |
72 | for (offset = 0; offset <= length_in - ctx->unitsize; | |
73 | offset += ctx->unitsize) { | |
74 | memcpy(&sample, data_in + offset, ctx->unitsize); | |
75 | for (p = 0; p < ctx->num_enabled_probes; p++) { | |
76 | ctx->linevalues[p] <<= 1; | |
77 | if (sample & ((uint64_t) 1 << p)) | |
78 | ctx->linevalues[p] |= 1; | |
79 | sprintf((char *)ctx->linebuf + (p * ctx->linebuf_len) + | |
80 | ctx->line_offset, "%.2x", ctx->linevalues[p]); | |
81 | } | |
82 | ctx->spl_cnt++; | |
83 | ||
84 | /* Add a space after every complete hex byte. */ | |
85 | if ((ctx->spl_cnt & 7) == 0) { | |
86 | for (p = 0; p < ctx->num_enabled_probes; p++) | |
87 | ctx->linebuf[p * ctx->linebuf_len + | |
88 | ctx->line_offset + 2] = ' '; | |
89 | ctx->line_offset += 3; | |
90 | } | |
91 | ||
92 | /* End of line. */ | |
93 | if (ctx->spl_cnt >= ctx->samples_per_line) { | |
94 | flush_linebufs(ctx, outbuf); | |
95 | ctx->line_offset = ctx->spl_cnt = 0; | |
96 | } | |
97 | } | |
98 | ||
99 | *data_out = outbuf; | |
100 | *length_out = strlen((const char *)outbuf); | |
101 | ||
102 | return SR_OK; | |
103 | } | |
104 | ||
105 | SR_PRIV struct sr_output_format output_text_hex = { | |
106 | .id = "hex", | |
107 | .description = "Hexadecimal", | |
108 | .df_type = SR_DF_LOGIC, | |
109 | .init = init_hex, | |
110 | .data = data_hex, | |
111 | .event = event, | |
112 | }; |