]> sigrok.org Git - libsigrok.git/blobdiff - src/hardware/kecheng-kc-330b/api.c
hwdriver.c: Fix two scan-build warnings.
[libsigrok.git] / src / hardware / kecheng-kc-330b / api.c
index d30f1604ec8aaaeea00e008902038125a5a6e1eb..44c0c29297bb8d1d33a8ce845da3cf224b556443 100644 (file)
 #include "protocol.h"
 
 #define USB_CONN "1041.8101"
-#define VENDOR "Kecheng"
 #define USB_INTERFACE 0
 
-static const uint32_t devopts[] = {
+static const uint32_t drvopts[] = {
        SR_CONF_SOUNDLEVELMETER,
+};
+
+static const uint32_t devopts[] = {
        SR_CONF_CONTINUOUS,
        SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
        SR_CONF_SAMPLE_INTERVAL | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
@@ -47,27 +49,17 @@ SR_PRIV const uint64_t kecheng_kc_330b_sample_intervals[][2] = {
 };
 
 static const char *weight_freq[] = {
-       "A",
-       "C",
+       "A", "C",
 };
 
 static const char *weight_time[] = {
-       "F",
-       "S",
+       "F", "S",
 };
 
 static const char *data_sources[] = {
-       "Live",
-       "Memory",
+       "Live", "Memory",
 };
 
-SR_PRIV struct sr_dev_driver kecheng_kc_330b_driver_info;
-
-static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
-{
-       return std_init(sr_ctx, di, LOG_PREFIX);
-}
-
 static int scan_kecheng(struct sr_dev_driver *di,
                struct sr_usb_dev_inst *usb, char **model)
 {
@@ -119,7 +111,6 @@ static GSList *scan(struct sr_dev_driver *di, GSList *options)
        (void)options;
 
        drvc = di->context;
-       drvc->instances = NULL;
 
        devices = NULL;
        if ((usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, USB_CONN))) {
@@ -130,9 +121,8 @@ static GSList *scan(struct sr_dev_driver *di, GSList *options)
                                continue;
                        sdi = g_malloc0(sizeof(struct sr_dev_inst));
                        sdi->status = SR_ST_INACTIVE;
-                       sdi->vendor = g_strdup(VENDOR);
+                       sdi->vendor = g_strdup("Kecheng");
                        sdi->model = model; /* Already g_strndup()'d. */
-                       sdi->driver = di;
                        sdi->inst_type = SR_INST_USB;
                        sdi->conn = l->data;
                        sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "SPL");
@@ -150,33 +140,22 @@ static GSList *scan(struct sr_dev_driver *di, GSList *options)
 
                        /* TODO: Set date/time? */
 
-                       drvc->instances = g_slist_append(drvc->instances, sdi);
                        devices = g_slist_append(devices, sdi);
                }
                g_slist_free(usb_devices);
        } else
                g_slist_free_full(usb_devices, g_free);
 
-       return devices;
-}
-
-static GSList *dev_list(const struct sr_dev_driver *di)
-{
-       return ((struct drv_context *)(di->context))->instances;
+       return std_scan_complete(di, devices);
 }
 
 static int dev_open(struct sr_dev_inst *sdi)
 {
        struct sr_dev_driver *di = sdi->driver;
-       struct drv_context *drvc;
+       struct drv_context *drvc = di->context;
        struct sr_usb_dev_inst *usb;
        int ret;
 
-       if (!(drvc = di->context)) {
-               sr_err("Driver was not initialized.");
-               return SR_ERR;
-       }
-
        usb = sdi->conn;
 
        if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK)
@@ -191,27 +170,19 @@ static int dev_open(struct sr_dev_inst *sdi)
                sr_err("Failed to claim interface: %s.", libusb_error_name(ret));
                return SR_ERR;
        }
-       sdi->status = SR_ST_ACTIVE;
 
-       return ret;
+       return SR_OK;
 }
 
 static int dev_close(struct sr_dev_inst *sdi)
 {
-       struct sr_dev_driver *di = sdi->driver;
        struct dev_context *devc;
        struct sr_usb_dev_inst *usb;
 
-       if (!di->context) {
-               sr_err("Driver was not initialized.");
-               return SR_ERR;
-       }
-
        usb = sdi->conn;
 
        if (!usb->devhdl)
-               /*  Nothing to do. */
-               return SR_OK;
+               return SR_ERR_BUG;
 
        /* This allows a frontend to configure the device without ever
         * doing an acquisition step. */
@@ -222,16 +193,14 @@ static int dev_close(struct sr_dev_inst *sdi)
        libusb_release_interface(usb->devhdl, USB_INTERFACE);
        libusb_close(usb->devhdl);
        usb->devhdl = NULL;
-       sdi->status = SR_ST_INACTIVE;
 
        return SR_OK;
 }
 
-static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
-               const struct sr_channel_group *cg)
+static int config_get(uint32_t key, GVariant **data,
+       const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 {
        struct dev_context *devc;
-       GVariant *rational[2];
        const uint64_t *si;
 
        (void)cg;
@@ -243,14 +212,11 @@ static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *s
                break;
        case SR_CONF_SAMPLE_INTERVAL:
                si = kecheng_kc_330b_sample_intervals[devc->sample_interval];
-               rational[0] = g_variant_new_uint64(si[0]);
-               rational[1] = g_variant_new_uint64(si[1]);
-               *data = g_variant_new_tuple(rational, 2);
+               *data = std_gvar_tuple_u64(si[0], si[1]);
                break;
        case SR_CONF_DATALOG:
                /* There really isn't a way to be sure the device is logging. */
                return SR_ERR_NA;
-               break;
        case SR_CONF_SPL_WEIGHT_FREQ:
                if (devc->mqflags & SR_MQFLAG_SPL_FREQ_WEIGHT_A)
                        *data = g_variant_new_string("A");
@@ -276,120 +242,69 @@ static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *s
        return SR_OK;
 }
 
-static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
-               const struct sr_channel_group *cg)
+static int config_set(uint32_t key, GVariant *data,
+       const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 {
-       struct sr_dev_driver *di = sdi->driver;
        struct dev_context *devc;
-       uint64_t p, q;
-       unsigned int i;
-       int tmp, ret;
-       const char *tmp_str;
+       int idx;
 
        (void)cg;
 
-       if (sdi->status != SR_ST_ACTIVE)
-               return SR_ERR_DEV_CLOSED;
-
-       if (!di->context) {
-               sr_err("Driver was not initialized.");
-               return SR_ERR;
-       }
-
        devc = sdi->priv;
-       ret = SR_OK;
        switch (key) {
        case SR_CONF_LIMIT_SAMPLES:
                devc->limit_samples = g_variant_get_uint64(data);
-               sr_dbg("Setting sample limit to %" PRIu64 ".",
-                      devc->limit_samples);
                break;
        case SR_CONF_SAMPLE_INTERVAL:
-               g_variant_get(data, "(tt)", &p, &q);
-               for (i = 0; i < ARRAY_SIZE(kecheng_kc_330b_sample_intervals); i++) {
-                       if (kecheng_kc_330b_sample_intervals[i][0] != p || kecheng_kc_330b_sample_intervals[i][1] != q)
-                               continue;
-                       devc->sample_interval = i;
-                       devc->config_dirty = TRUE;
-                       break;
-               }
-               if (i == ARRAY_SIZE(kecheng_kc_330b_sample_intervals))
-                       ret = SR_ERR_ARG;
+               if ((idx = std_u64_tuple_idx(data, ARRAY_AND_SIZE(kecheng_kc_330b_sample_intervals))) < 0)
+                       return SR_ERR_ARG;
+               devc->sample_interval = idx;
+               devc->config_dirty = TRUE;
                break;
        case SR_CONF_SPL_WEIGHT_FREQ:
-               tmp_str = g_variant_get_string(data, NULL);
-               if (!strcmp(tmp_str, "A"))
-                       tmp = SR_MQFLAG_SPL_FREQ_WEIGHT_A;
-               else if (!strcmp(tmp_str, "C"))
-                       tmp = SR_MQFLAG_SPL_FREQ_WEIGHT_C;
-               else
+               if ((idx = std_str_idx(data, ARRAY_AND_SIZE(weight_freq))) < 0)
                        return SR_ERR_ARG;
                devc->mqflags &= ~(SR_MQFLAG_SPL_FREQ_WEIGHT_A | SR_MQFLAG_SPL_FREQ_WEIGHT_C);
-               devc->mqflags |= tmp;
+               devc->mqflags |= (weight_freq[idx][0] == 'A') ? SR_MQFLAG_SPL_FREQ_WEIGHT_A : SR_MQFLAG_SPL_FREQ_WEIGHT_C;
                devc->config_dirty = TRUE;
                break;
        case SR_CONF_SPL_WEIGHT_TIME:
-               tmp_str = g_variant_get_string(data, NULL);
-               if (!strcmp(tmp_str, "F"))
-                       tmp = SR_MQFLAG_SPL_TIME_WEIGHT_F;
-               else if (!strcmp(tmp_str, "S"))
-                       tmp = SR_MQFLAG_SPL_TIME_WEIGHT_S;
-               else
+               if ((idx = std_str_idx(data, ARRAY_AND_SIZE(weight_time))) < 0)
                        return SR_ERR_ARG;
                devc->mqflags &= ~(SR_MQFLAG_SPL_TIME_WEIGHT_F | SR_MQFLAG_SPL_TIME_WEIGHT_S);
-               devc->mqflags |= tmp;
+               devc->mqflags |= (weight_time[idx][0] == 'F') ? SR_MQFLAG_SPL_TIME_WEIGHT_F : SR_MQFLAG_SPL_TIME_WEIGHT_S;
                devc->config_dirty = TRUE;
                break;
        case SR_CONF_DATA_SOURCE:
-               tmp_str = g_variant_get_string(data, NULL);
-               if (!strcmp(tmp_str, "Live"))
-                       devc->data_source = DATA_SOURCE_LIVE;
-               else if (!strcmp(tmp_str, "Memory"))
-                       devc->data_source = DATA_SOURCE_MEMORY;
-               else
-                       return SR_ERR;
+               if ((idx = std_str_idx(data, ARRAY_AND_SIZE(data_sources))) < 0)
+                       return SR_ERR_ARG;
+               devc->data_source = idx;
                devc->config_dirty = TRUE;
                break;
        default:
-               ret = SR_ERR_NA;
+               return SR_ERR_NA;
        }
 
-       return ret;
+       return SR_OK;
 }
 
-static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
-               const struct sr_channel_group *cg)
+static int config_list(uint32_t key, GVariant **data,
+       const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 {
-       GVariant *tuple, *rational[2];
-       GVariantBuilder gvb;
-       unsigned int i;
-
-       (void)sdi;
-       (void)cg;
-
        switch (key) {
        case SR_CONF_DEVICE_OPTIONS:
-               *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
-                               devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
-               break;
+               return STD_CONFIG_LIST(key, data, sdi, cg, NULL, drvopts, devopts);
        case SR_CONF_SAMPLE_INTERVAL:
-               g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
-               for (i = 0; i < ARRAY_SIZE(kecheng_kc_330b_sample_intervals); i++) {
-                       rational[0] = g_variant_new_uint64(kecheng_kc_330b_sample_intervals[i][0]);
-                       rational[1] = g_variant_new_uint64(kecheng_kc_330b_sample_intervals[i][1]);
-                       tuple = g_variant_new_tuple(rational, 2);
-                       g_variant_builder_add_value(&gvb, tuple);
-               }
-               *data = g_variant_builder_end(&gvb);
+               *data = std_gvar_tuple_array(ARRAY_AND_SIZE(kecheng_kc_330b_sample_intervals));
                break;
        case SR_CONF_SPL_WEIGHT_FREQ:
-               *data = g_variant_new_strv(weight_freq, ARRAY_SIZE(weight_freq));
+               *data = g_variant_new_strv(ARRAY_AND_SIZE(weight_freq));
                break;
        case SR_CONF_SPL_WEIGHT_TIME:
-               *data = g_variant_new_strv(weight_time, ARRAY_SIZE(weight_time));
+               *data = g_variant_new_strv(ARRAY_AND_SIZE(weight_time));
                break;
        case SR_CONF_DATA_SOURCE:
-               *data = g_variant_new_strv(data_sources, ARRAY_SIZE(data_sources));
+               *data = g_variant_new_strv(ARRAY_AND_SIZE(data_sources));
                break;
        default:
                return SR_ERR_NA;
@@ -407,21 +322,18 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi)
        struct sr_datafeed_meta meta;
        struct sr_config *src;
        struct sr_usb_dev_inst *usb;
-       GVariant *gvar, *rational[2];
+       GVariant *gvar;
        const uint64_t *si;
        int req_len, buf_len, len, ret;
        unsigned char buf[9];
 
-       if (sdi->status != SR_ST_ACTIVE)
-               return SR_ERR_DEV_CLOSED;
-
        drvc = di->context;
        devc = sdi->priv;
        usb = sdi->conn;
 
        devc->num_samples = 0;
 
-       std_session_send_df_header(sdi, LOG_PREFIX);
+       std_session_send_df_header(sdi);
 
        if (devc->data_source == DATA_SOURCE_LIVE) {
                /* Force configuration. */
@@ -444,7 +356,7 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi)
                devc->stored_samples = (buf[7] << 8) | buf[8];
                if (devc->stored_samples == 0) {
                        /* Notify frontend of empty log by sending start/end packets. */
-                       std_session_send_df_end(sdi, LOG_PREFIX);
+                       std_session_send_df_end(sdi);
                        return SR_OK;
                }
 
@@ -452,9 +364,8 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi)
                        devc->stored_samples = devc->limit_samples;
 
                si = kecheng_kc_330b_sample_intervals[buf[1]];
-               rational[0] = g_variant_new_uint64(si[0]);
-               rational[1] = g_variant_new_uint64(si[1]);
-               gvar = g_variant_new_tuple(rational, 2);
+               gvar = std_gvar_tuple_u64(si[0], si[1]);
+
                src = sr_config_new(SR_CONF_SAMPLE_INTERVAL, gvar);
                packet.type = SR_DF_META;
                packet.payload = &meta;
@@ -510,9 +421,6 @@ static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 {
        struct dev_context *devc;
 
-       if (sdi->status != SR_ST_ACTIVE)
-               return SR_ERR_DEV_CLOSED;
-
        /* Signal USB transfer handler to clean up and stop. */
        sdi->status = SR_ST_STOPPING;
 
@@ -530,15 +438,15 @@ static int dev_acquisition_stop(struct sr_dev_inst *sdi)
        return SR_OK;
 }
 
-SR_PRIV struct sr_dev_driver kecheng_kc_330b_driver_info = {
+static struct sr_dev_driver kecheng_kc_330b_driver_info = {
        .name = "kecheng-kc-330b",
        .longname = "Kecheng KC-330B",
        .api_version = 1,
-       .init = init,
+       .init = std_init,
        .cleanup = std_cleanup,
        .scan = scan,
-       .dev_list = dev_list,
-       .dev_clear = NULL,
+       .dev_list = std_dev_list,
+       .dev_clear = std_dev_clear,
        .config_get = config_get,
        .config_set = config_set,
        .config_list = config_list,
@@ -548,3 +456,4 @@ SR_PRIV struct sr_dev_driver kecheng_kc_330b_driver_info = {
        .dev_acquisition_stop = dev_acquisition_stop,
        .context = NULL,
 };
+SR_REGISTER_DEV_DRIVER(kecheng_kc_330b_driver_info);