demo: s/genmode/pattern/.

[libsigrok.git] / hardware / demo / demo.c

diff --git a/hardware/demo/demo.c b/hardware/demo/demo.c
index c1e1a90721aaf811d62220ec3a9fb2ed1e1976b4..2bd4709545cd656d93c99abb35f12fac779ede91 100644 (file)
--- a/hardware/demo/demo.c
+++ b/hardware/demo/demo.c
@@ -36,10 +36,24 @@
 /* size of chunks to send through the session bus */
 #define BUFSIZE                4096
 
+/* Supported patterns which we can generate */
 enum {
-       GENMODE_DEFAULT,
-       GENMODE_RANDOM,
-       GENMODE_INC,
+       /**
+        * Pattern which spells "sigrok" using '0's (with '1's as "background")
+        * when displayed using the 'bits' output format.
+        */
+       PATTERN_SIGROK,
+
+       /**
+        * Pattern which consists of (pseudo-)random values on all probes.
+        */
+       PATTERN_RANDOM,
+
+       /**
+        * Pattern which consists of incrementing numbers.
+        * TODO: Better description.
+        */
+       PATTERN_INC,
 };
 
 /* FIXME: Should not be global. */
@@ -71,13 +85,13 @@ static struct sr_samplerates samplerates = {
        NULL,
 };
 
-static const char *patternmodes[] = {
+static const char *pattern_strings[] = {
        "random",
        "incremental",
        NULL,
 };
 
-static uint8_t genmode_default[] = {
+static uint8_t pattern_sigrok[] = {
        0x4c, 0x92, 0x92, 0x92, 0x64, 0x00, 0x00, 0x00,
        0x82, 0xfe, 0xfe, 0x82, 0x00, 0x00, 0x00, 0x00,
        0x7c, 0x82, 0x82, 0x92, 0x74, 0x00, 0x00, 0x00,
@@ -93,7 +107,7 @@ static GSList *device_instances = NULL;
 static uint64_t cur_samplerate = SR_KHZ(200);
 static uint64_t limit_samples = 0;
 static uint64_t limit_msec = 0;
-static int default_genmode = GENMODE_DEFAULT;
+static int default_pattern = PATTERN_SIGROK;
 static GThread *my_thread;
 static int thread_running;
 
@@ -162,7 +176,7 @@ static void *hw_get_device_info(int device_index, int device_info_id)
                info = &cur_samplerate;
                break;
        case SR_DI_PATTERNMODES:
-               info = &patternmodes;
+               info = &pattern_strings;
                break;
        }
 
@@ -185,7 +199,6 @@ static int *hw_get_capabilities(void)
 static int hw_set_configuration(int device_index, int capability, void *value)
 {
        int ret;
-       uint64_t *tmp_u64;
        char *stropt;
 
        /* Avoid compiler warnings. */
@@ -195,36 +208,33 @@ static int hw_set_configuration(int device_index, int capability, void *value)
                /* Nothing to do, but must be supported */
                ret = SR_OK;
        } else if (capability == SR_HWCAP_SAMPLERATE) {
-               tmp_u64 = value;
-               cur_samplerate = *tmp_u64;
+               cur_samplerate = *(uint64_t *)value;
                sr_dbg("demo: %s: setting samplerate to %" PRIu64, __func__,
                       cur_samplerate);
                ret = SR_OK;
        } else if (capability == SR_HWCAP_LIMIT_SAMPLES) {
-               tmp_u64 = value;
-               limit_samples = *tmp_u64;
+               limit_samples = *(uint64_t *)value;
                sr_dbg("demo: %s: setting limit_samples to %" PRIu64, __func__,
                       limit_samples);
                ret = SR_OK;
        } else if (capability == SR_HWCAP_LIMIT_MSEC) {
-               tmp_u64 = value;
-               limit_msec = *tmp_u64;
+               limit_msec = *(uint64_t *)value;
                sr_dbg("demo: %s: setting limit_msec to %" PRIu64, __func__,
                       limit_msec);
                ret = SR_OK;
        } else if (capability == SR_HWCAP_PATTERN_MODE) {
                stropt = value;
                if (!strcmp(stropt, "random")) {
-                       default_genmode = GENMODE_RANDOM;
+                       default_pattern = PATTERN_RANDOM;
                        ret = SR_OK;
                } else if (!strcmp(stropt, "incremental")) {
-                       default_genmode = GENMODE_INC;
+                       default_pattern = PATTERN_INC;
                        ret = SR_OK;
                } else {
                        ret = SR_ERR;
                }
-               sr_dbg("demo: %s: setting patternmode to %d", __func__,
-                      default_genmode);
+               sr_dbg("demo: %s: setting pattern to %d", __func__,
+                      default_pattern);
        } else {
                ret = SR_ERR;
        }
@@ -241,18 +251,18 @@ static void samples_generator(uint8_t *buf, uint64_t size, void *data)
        memset(buf, 0, size);
 
        switch (mydata->sample_generator) {
-       case GENMODE_DEFAULT:
+       case PATTERN_SIGROK:
                for (i = 0; i < size; i++) {
-                       *(buf + i) = ~(genmode_default[p] >> 1);
+                       *(buf + i) = ~(pattern_sigrok[p] >> 1);
                        if (++p == 64)
                                p = 0;
                }
                break;
-       case GENMODE_RANDOM: /* Random */
+       case PATTERN_RANDOM: /* Random */
                for (i = 0; i < size; i++)
                        *(buf + i) = (uint8_t)(rand() & 0xff);
                break;
-       case GENMODE_INC: /* Simple increment */
+       case PATTERN_INC: /* Simple increment */
                for (i = 0; i < size; i++)
                        *(buf + i) = i;
                break;
@@ -358,7 +368,7 @@ static int hw_start_acquisition(int device_index, gpointer session_device_id)
                return SR_ERR_MALLOC;
        }
 
-       mydata->sample_generator = default_genmode;
+       mydata->sample_generator = default_pattern;
        mydata->session_device_id = session_device_id;
        mydata->device_index = device_index;
        mydata->samples_counter = 0;