/* FIXME: Should not be global. */
SR_PRIV GIOChannel *channels[2];
-struct databag {
+struct context {
int pipe_fds[2];
uint8_t sample_generator;
uint8_t thread_running;
GTimer *timer;
};
-static int hwcaps[] = {
+static const int hwcaps[] = {
SR_HWCAP_LOGIC_ANALYZER,
SR_HWCAP_DEMO_DEV,
SR_HWCAP_SAMPLERATE,
return SR_OK;
}
-static void *hw_dev_info_get(int dev_index, int dev_info_id)
+static const void *hw_dev_info_get(int dev_index, int dev_info_id)
{
struct sr_dev_inst *sdi;
- void *info = NULL;
+ const void *info = NULL;
if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) {
sr_err("demo: %s: sdi was NULL", __func__);
case SR_DI_CUR_SAMPLERATE:
info = &cur_samplerate;
break;
- case SR_DI_PATTERNMODES:
+ case SR_DI_PATTERNS:
info = &pattern_strings;
break;
}
return SR_ST_ACTIVE;
}
-static int *hw_hwcap_get_all(void)
+static const int *hw_hwcap_get_all(void)
{
return hwcaps;
}
static void samples_generator(uint8_t *buf, uint64_t size, void *data)
{
static uint64_t p = 0;
- struct databag *mydata = data;
+ struct context *ctx = data;
uint64_t i;
/* TODO: Needed? */
memset(buf, 0, size);
- switch (mydata->sample_generator) {
+ switch (ctx->sample_generator) {
case PATTERN_SIGROK: /* sigrok pattern */
for (i = 0; i < size; i++) {
*(buf + i) = ~(pattern_sigrok[p] >> 1);
memset(buf, 0xff, size);
break;
default:
- /* TODO: Error handling. */
+ sr_err("demo: %s: unknown pattern %d", __func__,
+ ctx->sample_generator);
break;
}
}
/* Thread function */
static void thread_func(void *data)
{
- struct databag *mydata = data;
+ struct context *ctx = data;
uint8_t buf[BUFSIZE];
uint64_t nb_to_send = 0;
int bytes_written;
double time_cur, time_last, time_diff;
- time_last = g_timer_elapsed(mydata->timer, NULL);
+ time_last = g_timer_elapsed(ctx->timer, NULL);
while (thread_running) {
/* Rate control */
- time_cur = g_timer_elapsed(mydata->timer, NULL);
+ time_cur = g_timer_elapsed(ctx->timer, NULL);
time_diff = time_cur - time_last;
time_last = time_cur;
if (limit_samples) {
nb_to_send = MIN(nb_to_send,
- limit_samples - mydata->samples_counter);
+ limit_samples - ctx->samples_counter);
}
/* Make sure we don't overflow. */
if (nb_to_send) {
samples_generator(buf, nb_to_send, data);
- mydata->samples_counter += nb_to_send;
+ ctx->samples_counter += nb_to_send;
g_io_channel_write_chars(channels[1], (gchar *)&buf,
nb_to_send, (gsize *)&bytes_written, NULL);
/* Check if we're done. */
if ((limit_msec && time_cur * 1000 > limit_msec) ||
- (limit_samples && mydata->samples_counter >= limit_samples))
+ (limit_samples && ctx->samples_counter >= limit_samples))
{
- close(mydata->pipe_fds[1]);
+ close(ctx->pipe_fds[1]);
thread_running = 0;
}
if (!thread_running && z <= 0) {
/* Make sure we don't receive more packets. */
- g_io_channel_close(channels[0]);
+ g_io_channel_shutdown(channels[0], FALSE, NULL);
/* Send last packet. */
packet.type = SR_DF_END;
{
struct sr_datafeed_packet *packet;
struct sr_datafeed_header *header;
- struct databag *mydata;
+ struct sr_datafeed_meta_logic meta;
+ struct context *ctx;
- /* TODO: 'mydata' is never g_free()'d? */
- if (!(mydata = g_try_malloc(sizeof(struct databag)))) {
- sr_err("demo: %s: mydata malloc failed", __func__);
+ /* TODO: 'ctx' is never g_free()'d? */
+ if (!(ctx = g_try_malloc(sizeof(struct context)))) {
+ sr_err("demo: %s: ctx malloc failed", __func__);
return SR_ERR_MALLOC;
}
- mydata->sample_generator = default_pattern;
- mydata->session_dev_id = cb_data;
- mydata->dev_index = dev_index;
- mydata->samples_counter = 0;
+ ctx->sample_generator = default_pattern;
+ ctx->session_dev_id = cb_data;
+ ctx->dev_index = dev_index;
+ ctx->samples_counter = 0;
- if (pipe(mydata->pipe_fds)) {
+ if (pipe(ctx->pipe_fds)) {
/* TODO: Better error message. */
sr_err("demo: %s: pipe() failed", __func__);
return SR_ERR;
}
- channels[0] = g_io_channel_unix_new(mydata->pipe_fds[0]);
- channels[1] = g_io_channel_unix_new(mydata->pipe_fds[1]);
+ channels[0] = g_io_channel_unix_new(ctx->pipe_fds[0]);
+ channels[1] = g_io_channel_unix_new(ctx->pipe_fds[1]);
/* Set channel encoding to binary (default is UTF-8). */
g_io_channel_set_encoding(channels[0], NULL, NULL);
g_io_channel_set_buffered(channels[0], FALSE);
g_io_channel_set_buffered(channels[1], FALSE);
- sr_source_add(mydata->pipe_fds[0], G_IO_IN | G_IO_ERR, 40,
- receive_data, mydata->session_dev_id);
+ sr_source_add(ctx->pipe_fds[0], G_IO_IN | G_IO_ERR, 40,
+ receive_data, ctx->session_dev_id);
/* Run the demo thread. */
g_thread_init(NULL);
/* This must to be done between g_thread_init() & g_thread_create(). */
- mydata->timer = g_timer_new();
+ ctx->timer = g_timer_new();
thread_running = 1;
my_thread =
- g_thread_create((GThreadFunc)thread_func, mydata, TRUE, NULL);
+ g_thread_create((GThreadFunc)thread_func, ctx, TRUE, NULL);
if (!my_thread) {
sr_err("demo: %s: g_thread_create failed", __func__);
return SR_ERR; /* TODO */
packet->payload = header;
header->feed_version = 1;
gettimeofday(&header->starttime, NULL);
- header->samplerate = cur_samplerate;
- header->num_logic_probes = NUM_PROBES;
- sr_session_send(mydata->session_dev_id, packet);
+ sr_session_send(ctx->session_dev_id, packet);
+
+ /* Send metadata about the SR_DF_LOGIC packets to come. */
+ packet->type = SR_DF_META_LOGIC;
+ packet->payload = &meta;
+ meta.samplerate = cur_samplerate;
+ meta.num_probes = NUM_PROBES;
+ sr_session_send(ctx->session_dev_id, packet);
+
g_free(header);
g_free(packet);
projects / libsigrok.git / blobdiff