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83e9d586 | 1 | /* |
50985c20 | 2 | * This file is part of the libsigrok project. |
83e9d586 UH |
3 | * |
4 | * Copyright (C) 2011 Uwe Hermann <uwe@hermann-uwe.de> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | ||
21 | #include <stdlib.h> | |
22 | #include <fcntl.h> | |
23 | #include <unistd.h> | |
36423d04 | 24 | #include <sys/stat.h> |
45c59c8b BV |
25 | #include "libsigrok.h" |
26 | #include "libsigrok-internal.h" | |
83e9d586 | 27 | |
b95dd761 | 28 | #define LOG_PREFIX "input/chronovu-la8" |
8e7f1cfd | 29 | |
02e24c0c | 30 | #define DEFAULT_NUM_CHANNELS 8 |
edd28877 | 31 | #define DEFAULT_SAMPLERATE 100000000L |
02e24c0c BV |
32 | #define MAX_CHUNK_SIZE 4096 |
33 | #define CHRONOVU_LA8_FILESIZE 8 * 1024 * 1024 + 5 | |
83e9d586 | 34 | |
02e24c0c BV |
35 | struct context { |
36 | gboolean started; | |
37 | uint64_t samplerate; | |
38 | }; | |
83e9d586 | 39 | |
02e24c0c | 40 | static int format_match(GHashTable *metadata) |
83e9d586 | 41 | { |
02e24c0c | 42 | int size; |
83e9d586 | 43 | |
02e24c0c BV |
44 | size = GPOINTER_TO_INT(g_hash_table_lookup(metadata, |
45 | GINT_TO_POINTER(SR_INPUT_META_FILESIZE))); | |
46 | if (size == CHRONOVU_LA8_FILESIZE) | |
4f979115 | 47 | return SR_OK; |
83e9d586 | 48 | |
4f979115 | 49 | return SR_ERR; |
83e9d586 UH |
50 | } |
51 | ||
02e24c0c | 52 | static int init(struct sr_input *in, GHashTable *options) |
83e9d586 | 53 | { |
ba7dd8bb | 54 | struct sr_channel *ch; |
02e24c0c | 55 | struct context *inc; |
ba7dd8bb | 56 | int num_channels, i; |
02e24c0c BV |
57 | char name[16]; |
58 | ||
59 | num_channels = g_variant_get_int32(g_hash_table_lookup(options, "numchannels")); | |
60 | if (num_channels < 1) { | |
61 | sr_err("Invalid value for numchannels: must be at least 1."); | |
62 | return SR_ERR_ARG; | |
63 | } | |
64 | ||
aac29cc1 | 65 | in->sdi = g_malloc0(sizeof(struct sr_dev_inst)); |
02e24c0c | 66 | in->priv = inc = g_malloc0(sizeof(struct context)); |
edd28877 BV |
67 | |
68 | inc->samplerate = g_variant_get_uint64(g_hash_table_lookup(options, "samplerate")); | |
464d12c7 | 69 | |
ba7dd8bb | 70 | for (i = 0; i < num_channels; i++) { |
02e24c0c BV |
71 | snprintf(name, 16, "%d", i); |
72 | ch = sr_channel_new(i, SR_CHANNEL_LOGIC, TRUE, name); | |
ba7dd8bb | 73 | in->sdi->channels = g_slist_append(in->sdi->channels, ch); |
464d12c7 | 74 | } |
83e9d586 UH |
75 | |
76 | return SR_OK; | |
77 | } | |
78 | ||
7066fd46 | 79 | static int process_buffer(struct sr_input *in) |
83e9d586 | 80 | { |
83e9d586 | 81 | struct sr_datafeed_packet packet; |
2df1e819 | 82 | struct sr_datafeed_meta meta; |
9c939c51 | 83 | struct sr_datafeed_logic logic; |
2df1e819 | 84 | struct sr_config *src; |
02e24c0c BV |
85 | struct context *inc; |
86 | gsize chunk_size, i; | |
7066fd46 | 87 | int chunk; |
83e9d586 | 88 | |
02e24c0c | 89 | inc = in->priv; |
04c2f202 BV |
90 | if (!inc->started) { |
91 | std_session_send_df_header(in->sdi, LOG_PREFIX); | |
04c2f202 | 92 | |
d0181813 BV |
93 | if (inc->samplerate) { |
94 | packet.type = SR_DF_META; | |
95 | packet.payload = &meta; | |
96 | src = sr_config_new(SR_CONF_SAMPLERATE, g_variant_new_uint64(inc->samplerate)); | |
97 | meta.config = g_slist_append(NULL, src); | |
98 | sr_session_send(in->sdi, &packet); | |
99 | sr_config_free(src); | |
100 | } | |
101 | ||
102 | inc->started = TRUE; | |
04c2f202 | 103 | } |
83e9d586 | 104 | |
83e9d586 | 105 | packet.type = SR_DF_LOGIC; |
9c939c51 | 106 | packet.payload = &logic; |
7066fd46 | 107 | logic.unitsize = (g_slist_length(in->sdi->channels) + 7) / 8; |
02e24c0c BV |
108 | |
109 | /* Cut off at multiple of unitsize. */ | |
110 | chunk_size = in->buf->len / logic.unitsize * logic.unitsize; | |
83e9d586 | 111 | |
02e24c0c | 112 | for (i = 0; i < chunk_size; i += chunk) { |
04c2f202 BV |
113 | logic.data = in->buf->str + i; |
114 | chunk = MIN(MAX_CHUNK_SIZE, chunk_size - i); | |
02e24c0c | 115 | logic.length = chunk; |
5c3c1241 | 116 | sr_session_send(in->sdi, &packet); |
83e9d586 | 117 | } |
04c2f202 | 118 | g_string_erase(in->buf, 0, chunk_size); |
02e24c0c BV |
119 | |
120 | return SR_OK; | |
121 | } | |
122 | ||
7066fd46 BV |
123 | static int receive(struct sr_input *in, GString *buf) |
124 | { | |
125 | int ret; | |
126 | ||
127 | g_string_append_len(in->buf, buf->str, buf->len); | |
128 | ||
129 | if (!in->sdi_ready) { | |
130 | /* sdi is ready, notify frontend. */ | |
131 | in->sdi_ready = TRUE; | |
132 | return SR_OK; | |
133 | } | |
134 | ||
135 | ret = process_buffer(in); | |
136 | ||
137 | return ret; | |
138 | } | |
139 | ||
140 | static int end(struct sr_input *in) | |
02e24c0c | 141 | { |
02e24c0c | 142 | struct context *inc; |
d0181813 | 143 | struct sr_datafeed_packet packet; |
7066fd46 | 144 | int ret; |
02e24c0c | 145 | |
7066fd46 BV |
146 | if (in->sdi_ready) |
147 | ret = process_buffer(in); | |
148 | else | |
149 | ret = SR_OK; | |
02e24c0c | 150 | |
7066fd46 | 151 | inc = in->priv; |
02e24c0c BV |
152 | if (inc->started) { |
153 | packet.type = SR_DF_END; | |
154 | sr_session_send(in->sdi, &packet); | |
155 | } | |
83e9d586 | 156 | |
7066fd46 | 157 | return ret; |
83e9d586 UH |
158 | } |
159 | ||
02e24c0c BV |
160 | static struct sr_option options[] = { |
161 | { "numchannels", "Number of channels", "Number of channels", NULL, NULL }, | |
162 | { "samplerate", "Sample rate", "Sample rate", NULL, NULL }, | |
06ad20be | 163 | ALL_ZERO |
02e24c0c BV |
164 | }; |
165 | ||
166 | static struct sr_option *get_options(void) | |
167 | { | |
168 | if (!options[0].def) { | |
169 | options[0].def = g_variant_ref_sink(g_variant_new_int32(DEFAULT_NUM_CHANNELS)); | |
edd28877 | 170 | options[1].def = g_variant_ref_sink(g_variant_new_uint64(DEFAULT_SAMPLERATE)); |
02e24c0c BV |
171 | } |
172 | ||
173 | return options; | |
174 | } | |
175 | ||
d4c93774 | 176 | SR_PRIV struct sr_input_module input_chronovu_la8 = { |
83e9d586 | 177 | .id = "chronovu-la8", |
02e24c0c | 178 | .name = "Chronovu-LA8", |
17bfaca6 | 179 | .desc = "ChronoVu LA8", |
02e24c0c BV |
180 | .metadata = { SR_INPUT_META_FILESIZE | SR_INPUT_META_REQUIRED }, |
181 | .options = get_options, | |
83e9d586 UH |
182 | .format_match = format_match, |
183 | .init = init, | |
02e24c0c | 184 | .receive = receive, |
7066fd46 | 185 | .end = end, |
83e9d586 | 186 | }; |