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Use errno for result errors

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Make new enumeration for data transport status and use errno
style error numbers for errors.
This commit is contained in:
Wim Taymans 2017-11-13 09:41:41 +01:00
parent dda28b1589
commit 6fb0f580ea
86 changed files with 2019 additions and 1988 deletions
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66
spa/plugins/v4l2/v4l2-monitor.c
View file

@ -17,6 +17,7 @@
* Boston, MA 02110-1301, USA.
*/
#include <errno.h>
#include <stddef.h>
#include <stdio.h>
#include <sys/types.h>
@ -79,11 +80,13 @@ struct impl {
static int impl_udev_open(struct impl *this)
{
if (this->udev != NULL)
return SPA_RESULT_OK;
return 0;
this->udev = udev_new();
if (this->udev == NULL)
return -ENOMEM;
return SPA_RESULT_OK;
return 0;
}
static void fill_item(struct impl *this, struct item *item, struct udev_device *udevice)
@ -216,7 +219,7 @@ impl_monitor_set_callbacks(struct spa_monitor *monitor,
int res;
struct impl *this;
spa_return_val_if_fail(monitor != NULL, SPA_RESULT_INVALID_ARGUMENTS);
spa_return_val_if_fail(monitor != NULL, -EINVAL);
this = SPA_CONTAINER_OF(monitor, struct impl, monitor);
@ -230,7 +233,7 @@ impl_monitor_set_callbacks(struct spa_monitor *monitor,
udev_monitor_unref(this->umonitor);
this->umonitor = udev_monitor_new_from_netlink(this->udev, "udev");
if (this->umonitor == NULL)
return SPA_RESULT_ERROR;
return -ENOMEM;
udev_monitor_filter_add_match_subsystem_devtype(this->umonitor,
"video4linux", NULL);
@ -246,25 +249,26 @@ impl_monitor_set_callbacks(struct spa_monitor *monitor,
spa_loop_remove_source(this->main_loop, &this->source);
}
return SPA_RESULT_OK;
return 0;
}
static int
impl_monitor_enum_items(struct spa_monitor *monitor, struct spa_monitor_item **item, uint32_t index)
impl_monitor_enum_items(struct spa_monitor *monitor, struct spa_monitor_item **item, uint32_t *index)
{
int res;
struct impl *this;
struct udev_device *dev;
spa_return_val_if_fail(monitor != NULL, SPA_RESULT_INVALID_ARGUMENTS);
spa_return_val_if_fail(item != NULL, SPA_RESULT_INVALID_ARGUMENTS);
spa_return_val_if_fail(monitor != NULL, -EINVAL);
spa_return_val_if_fail(item != NULL, -EINVAL);
spa_return_val_if_fail(index != NULL, -EINVAL);
this = SPA_CONTAINER_OF(monitor, struct impl, monitor);
if ((res = impl_udev_open(this)) < 0)
return res;
if (index == 0) {
if (*index == 0) {
if (this->enumerate)
udev_enumerate_unref(this->enumerate);
this->enumerate = udev_enumerate_new(this->udev);
@ -275,27 +279,28 @@ impl_monitor_enum_items(struct spa_monitor *monitor, struct spa_monitor_item **i
this->devices = udev_enumerate_get_list_entry(this->enumerate);
this->index = 0;
}
while (index > this->index && this->devices) {
while (*index > this->index && this->devices) {
this->devices = udev_list_entry_get_next(this->devices);
this->index++;
}
if (this->devices == NULL) {
fill_item(this, &this->uitem, NULL);
return SPA_RESULT_ENUM_END;
return 0;
}
dev = udev_device_new_from_syspath(this->udev, udev_list_entry_get_name(this->devices));
fill_item(this, &this->uitem, dev);
if (dev == NULL)
return SPA_RESULT_ENUM_END;
return 0;
*item = this->uitem.item;
this->devices = udev_list_entry_get_next(this->devices);
this->index++;
(*index)++;
return SPA_RESULT_OK;
return 1;
}
static const struct spa_monitor impl_monitor = {
@ -309,17 +314,17 @@ static int impl_get_interface(struct spa_handle *handle, uint32_t interface_id,
{
struct impl *this;
spa_return_val_if_fail(handle != NULL, SPA_RESULT_INVALID_ARGUMENTS);
spa_return_val_if_fail(interface != NULL, SPA_RESULT_INVALID_ARGUMENTS);
spa_return_val_if_fail(handle != NULL, -EINVAL);
spa_return_val_if_fail(interface != NULL, -EINVAL);
this = (struct impl *) handle;
if (interface_id == this->type.monitor.Monitor)
*interface = &this->monitor;
else
return SPA_RESULT_UNKNOWN_INTERFACE;
return -ENOENT;
return SPA_RESULT_OK;
return 0;
}
static int impl_clear(struct spa_handle *handle)
@ -333,7 +338,7 @@ static int impl_clear(struct spa_handle *handle)
if (this->udev)
udev_unref(this->udev);
return SPA_RESULT_OK;
return 0;
}
static int
@ -346,8 +351,8 @@ impl_init(const struct spa_handle_factory *factory,
struct impl *this;
uint32_t i;
spa_return_val_if_fail(factory != NULL, SPA_RESULT_INVALID_ARGUMENTS);
spa_return_val_if_fail(handle != NULL, SPA_RESULT_INVALID_ARGUMENTS);
spa_return_val_if_fail(factory != NULL, -EINVAL);
spa_return_val_if_fail(handle != NULL, -EINVAL);
handle->get_interface = impl_get_interface;
handle->clear = impl_clear;
@ -364,17 +369,17 @@ impl_init(const struct spa_handle_factory *factory,
}
if (this->map == NULL) {
spa_log_error(this->log, "a type-map is needed");
return SPA_RESULT_ERROR;
return -EINVAL;
}
if (this->main_loop == NULL) {
spa_log_error(this->log, "a main-loop is needed");
return SPA_RESULT_ERROR;
return -EINVAL;
}
init_type(&this->type, this->map);
this->monitor = impl_monitor;
return SPA_RESULT_OK;
return 0;
}
static const struct spa_interface_info impl_interfaces[] = {
@ -384,17 +389,18 @@ static const struct spa_interface_info impl_interfaces[] = {
static int
impl_enum_interface_info(const struct spa_handle_factory *factory,
const struct spa_interface_info **info,
uint32_t index)
uint32_t *index)
{
spa_return_val_if_fail(factory != NULL, SPA_RESULT_INVALID_ARGUMENTS);
spa_return_val_if_fail(info != NULL, SPA_RESULT_INVALID_ARGUMENTS);
spa_return_val_if_fail(factory != NULL, -EINVAL);
spa_return_val_if_fail(info != NULL, -EINVAL);
spa_return_val_if_fail(index != NULL, -EINVAL);
if (index >= SPA_N_ELEMENTS(impl_interfaces))
return SPA_RESULT_ENUM_END;
if (*index >= SPA_N_ELEMENTS(impl_interfaces))
return 0;
*info = &impl_interfaces[index];
*info = &impl_interfaces[(*index)++];
return SPA_RESULT_OK;
return 1;
}
const struct spa_handle_factory spa_v4l2_monitor_factory = {