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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> |
97554432 BV |
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> | |
45c59c8b BV |
24 | #include "libsigrok.h" |
25 | #include "libsigrok-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 | ||
054e6709 UH |
33 | SR_PRIV int data_bits(struct sr_output *o, const uint8_t *data_in, |
34 | uint64_t length_in, uint8_t **data_out, | |
35 | uint64_t *length_out) | |
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36 | { |
37 | struct context *ctx; | |
38 | unsigned int outsize, offset, p; | |
39 | int max_linelen; | |
40 | uint64_t sample; | |
054e6709 | 41 | uint8_t *outbuf, c; |
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42 | |
43 | ctx = o->internal; | |
9688b443 | 44 | max_linelen = SR_MAX_PROBENAME_LEN + 3 + ctx->samples_per_line |
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45 | + ctx->samples_per_line / 8; |
46 | /* | |
47 | * Calculate space needed for probes. Set aside 512 bytes for | |
48 | * extra output, e.g. trigger. | |
49 | */ | |
50 | outsize = 512 + (1 + (length_in / ctx->unitsize) / ctx->samples_per_line) | |
51 | * (ctx->num_enabled_probes * max_linelen); | |
52 | ||
133a37bf UH |
53 | if (!(outbuf = g_try_malloc0(outsize + 1))) { |
54 | sr_err("bits out: %s: outbuf malloc failed", __func__); | |
e46b8fb1 | 55 | return SR_ERR_MALLOC; |
133a37bf | 56 | } |
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57 | |
58 | outbuf[0] = '\0'; | |
59 | if (ctx->header) { | |
60 | /* The header is still here, this must be the first packet. */ | |
054e6709 | 61 | strncpy((char *)outbuf, ctx->header, outsize); |
133a37bf | 62 | g_free(ctx->header); |
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63 | ctx->header = NULL; |
64 | ||
65 | /* Ensure first transition. */ | |
66 | memcpy(&ctx->prevsample, data_in, ctx->unitsize); | |
67 | ctx->prevsample = ~ctx->prevsample; | |
68 | } | |
69 | ||
70 | if (length_in >= ctx->unitsize) { | |
71 | for (offset = 0; offset <= length_in - ctx->unitsize; | |
72 | offset += ctx->unitsize) { | |
73 | memcpy(&sample, data_in + offset, ctx->unitsize); | |
74 | for (p = 0; p < ctx->num_enabled_probes; p++) { | |
75 | c = (sample & ((uint64_t) 1 << p)) ? '1' : '0'; | |
76 | ctx->linebuf[p * ctx->linebuf_len + | |
77 | ctx->line_offset] = c; | |
78 | } | |
79 | ctx->line_offset++; | |
80 | ctx->spl_cnt++; | |
81 | ||
82 | /* Add a space every 8th bit. */ | |
83 | if ((ctx->spl_cnt & 7) == 0) { | |
84 | for (p = 0; p < ctx->num_enabled_probes; p++) | |
85 | ctx->linebuf[p * ctx->linebuf_len + | |
86 | ctx->line_offset] = ' '; | |
87 | ctx->line_offset++; | |
88 | } | |
89 | ||
90 | /* End of line. */ | |
91 | if (ctx->spl_cnt >= ctx->samples_per_line) { | |
92 | flush_linebufs(ctx, outbuf); | |
93 | ctx->line_offset = ctx->spl_cnt = 0; | |
94 | ctx->mark_trigger = -1; | |
95 | } | |
96 | } | |
97 | } else { | |
7b48d6e1 UH |
98 | sr_info("bits out: short buffer (length_in=%" PRIu64 ")", |
99 | length_in); | |
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100 | } |
101 | ||
102 | *data_out = outbuf; | |
054e6709 | 103 | *length_out = strlen((const char *)outbuf); |
97554432 | 104 | |
e46b8fb1 | 105 | return SR_OK; |
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106 | } |
107 | ||
7c1d391c | 108 | SR_PRIV struct sr_output_format output_text_bits = { |
cdb3573c | 109 | .id = "bits", |
2e7cb004 | 110 | .description = "Bits", |
d494a4aa UH |
111 | .df_type = SR_DF_LOGIC, |
112 | .init = init_bits, | |
113 | .data = data_bits, | |
114 | .event = event, | |
97554432 | 115 | }; |