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97554432 | 1 | /* |
50985c20 | 2 | * This file is part of the libsigrok project. |
97554432 | 3 | * |
c73d2ea4 | 4 | * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com> |
97554432 BV |
5 | * Copyright (C) 2011 Håvard 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" | |
97554432 BV |
26 | #include "text.h" |
27 | ||
3544f848 | 28 | #define LOG_PREFIX "output/bits" |
a944a84b | 29 | |
7c1d391c | 30 | SR_PRIV int init_bits(struct sr_output *o) |
97554432 BV |
31 | { |
32 | return init(o, DEFAULT_BPL_BITS, MODE_BITS); | |
33 | } | |
34 | ||
054e6709 UH |
35 | SR_PRIV int data_bits(struct sr_output *o, const uint8_t *data_in, |
36 | uint64_t length_in, uint8_t **data_out, | |
37 | uint64_t *length_out) | |
97554432 BV |
38 | { |
39 | struct context *ctx; | |
40 | unsigned int outsize, offset, p; | |
41 | int max_linelen; | |
542dbd18 | 42 | const uint8_t *sample; |
054e6709 | 43 | uint8_t *outbuf, c; |
97554432 BV |
44 | |
45 | ctx = o->internal; | |
3f239f08 | 46 | max_linelen = SR_MAX_CHANNELNAME_LEN + 3 + ctx->samples_per_line |
97554432 BV |
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) | |
ba7dd8bb | 53 | * (ctx->num_enabled_channels * max_linelen); |
97554432 | 54 | |
133a37bf | 55 | if (!(outbuf = g_try_malloc0(outsize + 1))) { |
a944a84b | 56 | sr_err("%s: outbuf malloc failed", __func__); |
e46b8fb1 | 57 | return SR_ERR_MALLOC; |
133a37bf | 58 | } |
97554432 BV |
59 | |
60 | outbuf[0] = '\0'; | |
61 | if (ctx->header) { | |
62 | /* The header is still here, this must be the first packet. */ | |
054e6709 | 63 | strncpy((char *)outbuf, ctx->header, outsize); |
133a37bf | 64 | g_free(ctx->header); |
97554432 | 65 | ctx->header = NULL; |
97554432 BV |
66 | } |
67 | ||
68 | if (length_in >= ctx->unitsize) { | |
69 | for (offset = 0; offset <= length_in - ctx->unitsize; | |
70 | offset += ctx->unitsize) { | |
542dbd18 | 71 | sample = data_in + offset; |
ba7dd8bb | 72 | for (p = 0; p < ctx->num_enabled_channels; p++) { |
542dbd18 | 73 | c = (sample[p / 8] & ((uint8_t) 1 << (p % 8))) ? '1' : '0'; |
97554432 BV |
74 | ctx->linebuf[p * ctx->linebuf_len + |
75 | ctx->line_offset] = c; | |
76 | } | |
77 | ctx->line_offset++; | |
78 | ctx->spl_cnt++; | |
79 | ||
80 | /* Add a space every 8th bit. */ | |
81 | if ((ctx->spl_cnt & 7) == 0) { | |
ba7dd8bb | 82 | for (p = 0; p < ctx->num_enabled_channels; p++) |
97554432 BV |
83 | ctx->linebuf[p * ctx->linebuf_len + |
84 | ctx->line_offset] = ' '; | |
85 | ctx->line_offset++; | |
86 | } | |
87 | ||
88 | /* End of line. */ | |
89 | if (ctx->spl_cnt >= ctx->samples_per_line) { | |
90 | flush_linebufs(ctx, outbuf); | |
91 | ctx->line_offset = ctx->spl_cnt = 0; | |
92 | ctx->mark_trigger = -1; | |
93 | } | |
94 | } | |
95 | } else { | |
a944a84b | 96 | sr_info("Short buffer (length_in=%" PRIu64 ").", length_in); |
97554432 BV |
97 | } |
98 | ||
99 | *data_out = outbuf; | |
054e6709 | 100 | *length_out = strlen((const char *)outbuf); |
97554432 | 101 | |
e46b8fb1 | 102 | return SR_OK; |
97554432 BV |
103 | } |
104 | ||
7c1d391c | 105 | SR_PRIV struct sr_output_format output_text_bits = { |
cdb3573c | 106 | .id = "bits", |
2e7cb004 | 107 | .description = "Bits", |
d494a4aa UH |
108 | .df_type = SR_DF_LOGIC, |
109 | .init = init_bits, | |
110 | .data = data_bits, | |
111 | .event = event, | |
8c273ac5 | 112 | .cleanup = text_cleanup, |
97554432 | 113 | }; |