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1 | /* |
2 | * This file is part of the sigrok project. | |
3 | * | |
c73d2ea4 | 4 | * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com> |
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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> | |
cd315a80 UH |
24 | #include "sigrok.h" |
25 | #include "sigrok-internal.h" | |
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26 | #include "text.h" |
27 | ||
7c1d391c | 28 | SR_PRIV int init_bits(struct sr_output *o) |
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29 | { |
30 | return init(o, DEFAULT_BPL_BITS, MODE_BITS); | |
31 | } | |
32 | ||
7c1d391c UH |
33 | SR_PRIV int data_bits(struct sr_output *o, const char *data_in, |
34 | uint64_t length_in, char **data_out, uint64_t *length_out) | |
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35 | { |
36 | struct context *ctx; | |
37 | unsigned int outsize, offset, p; | |
38 | int max_linelen; | |
39 | uint64_t sample; | |
40 | char *outbuf, c; | |
41 | ||
42 | ctx = o->internal; | |
9688b443 | 43 | max_linelen = SR_MAX_PROBENAME_LEN + 3 + ctx->samples_per_line |
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44 | + ctx->samples_per_line / 8; |
45 | /* | |
46 | * Calculate space needed for probes. Set aside 512 bytes for | |
47 | * extra output, e.g. trigger. | |
48 | */ | |
49 | outsize = 512 + (1 + (length_in / ctx->unitsize) / ctx->samples_per_line) | |
50 | * (ctx->num_enabled_probes * max_linelen); | |
51 | ||
133a37bf UH |
52 | if (!(outbuf = g_try_malloc0(outsize + 1))) { |
53 | sr_err("bits out: %s: outbuf malloc failed", __func__); | |
e46b8fb1 | 54 | return SR_ERR_MALLOC; |
133a37bf | 55 | } |
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56 | |
57 | outbuf[0] = '\0'; | |
58 | if (ctx->header) { | |
59 | /* The header is still here, this must be the first packet. */ | |
60 | strncpy(outbuf, ctx->header, outsize); | |
133a37bf | 61 | g_free(ctx->header); |
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62 | ctx->header = NULL; |
63 | ||
64 | /* Ensure first transition. */ | |
65 | memcpy(&ctx->prevsample, data_in, ctx->unitsize); | |
66 | ctx->prevsample = ~ctx->prevsample; | |
67 | } | |
68 | ||
69 | if (length_in >= ctx->unitsize) { | |
70 | for (offset = 0; offset <= length_in - ctx->unitsize; | |
71 | offset += ctx->unitsize) { | |
72 | memcpy(&sample, data_in + offset, ctx->unitsize); | |
73 | for (p = 0; p < ctx->num_enabled_probes; p++) { | |
74 | c = (sample & ((uint64_t) 1 << p)) ? '1' : '0'; | |
75 | ctx->linebuf[p * ctx->linebuf_len + | |
76 | ctx->line_offset] = c; | |
77 | } | |
78 | ctx->line_offset++; | |
79 | ctx->spl_cnt++; | |
80 | ||
81 | /* Add a space every 8th bit. */ | |
82 | if ((ctx->spl_cnt & 7) == 0) { | |
83 | for (p = 0; p < ctx->num_enabled_probes; p++) | |
84 | ctx->linebuf[p * ctx->linebuf_len + | |
85 | ctx->line_offset] = ' '; | |
86 | ctx->line_offset++; | |
87 | } | |
88 | ||
89 | /* End of line. */ | |
90 | if (ctx->spl_cnt >= ctx->samples_per_line) { | |
91 | flush_linebufs(ctx, outbuf); | |
92 | ctx->line_offset = ctx->spl_cnt = 0; | |
93 | ctx->mark_trigger = -1; | |
94 | } | |
95 | } | |
96 | } else { | |
b08024a8 | 97 | sr_info("short buffer (length_in=%" PRIu64 ")", length_in); |
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98 | } |
99 | ||
100 | *data_out = outbuf; | |
101 | *length_out = strlen(outbuf); | |
102 | ||
e46b8fb1 | 103 | return SR_OK; |
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104 | } |
105 | ||
7c1d391c | 106 | SR_PRIV struct sr_output_format output_text_bits = { |
cdb3573c | 107 | .id = "bits", |
d494a4aa UH |
108 | .description = "Bits (takes argument, default 64)", |
109 | .df_type = SR_DF_LOGIC, | |
110 | .init = init_bits, | |
111 | .data = data_bits, | |
112 | .event = event, | |
97554432 | 113 | }; |