mirror of
https://gitlab.freedesktop.org/pipewire/pipewire.git
synced 2025-11-03 09:01:54 -05:00
111 lines
3.1 KiB
C
111 lines
3.1 KiB
C
/* Simple Plugin API
|
|
* Copyright (C) 2016 Wim Taymans <wim.taymans@gmail.com>
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#include <stdint.h>
|
|
#include <stddef.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
#include <spa/props.h>
|
|
|
|
SpaResult
|
|
spa_props_set_prop (SpaProps *props,
|
|
unsigned int index,
|
|
const SpaPropValue *value)
|
|
{
|
|
const SpaPropInfo *info;
|
|
|
|
if (props == NULL || value == NULL)
|
|
return SPA_RESULT_INVALID_ARGUMENTS;
|
|
if (index >= props->n_prop_info)
|
|
return SPA_RESULT_INVALID_PROPERTY_INDEX;
|
|
|
|
info = &props->prop_info[index];
|
|
if ((info->flags & SPA_PROP_FLAG_WRITABLE) == 0)
|
|
return SPA_RESULT_INVALID_PROPERTY_ACCESS;
|
|
if (info->type != value->type)
|
|
return SPA_RESULT_WRONG_PROPERTY_TYPE;
|
|
if (info->maxsize < value->size)
|
|
return SPA_RESULT_WRONG_PROPERTY_SIZE;
|
|
|
|
if (info->offset != 0)
|
|
memcpy ((uint8_t*)props + info->offset, value->value, value->size);
|
|
|
|
props->unset_mask &= ~(1u << index);
|
|
|
|
return SPA_RESULT_OK;
|
|
}
|
|
|
|
|
|
SpaResult
|
|
spa_props_get_prop (const SpaProps *props,
|
|
unsigned int index,
|
|
SpaPropValue *value)
|
|
{
|
|
const SpaPropInfo *info;
|
|
|
|
if (props == NULL || value == NULL)
|
|
return SPA_RESULT_INVALID_ARGUMENTS;
|
|
if (index >= props->n_prop_info)
|
|
return SPA_RESULT_INVALID_PROPERTY_INDEX;
|
|
|
|
info = &props->prop_info[index];
|
|
if ((info->flags & SPA_PROP_FLAG_READABLE) == 0)
|
|
return SPA_RESULT_INVALID_PROPERTY_ACCESS;
|
|
if (props->unset_mask & (1u << index))
|
|
return SPA_RESULT_PROPERTY_UNSET;
|
|
|
|
value->type = info->type;
|
|
value->size = info->maxsize;
|
|
if (info->offset != 0)
|
|
value->value = (uint8_t*)props + info->offset;
|
|
|
|
return SPA_RESULT_OK;
|
|
}
|
|
|
|
SpaResult
|
|
spa_props_copy (const SpaProps *src,
|
|
SpaProps *dest)
|
|
{
|
|
int i;
|
|
SpaResult res;
|
|
|
|
if (src == dest)
|
|
return SPA_RESULT_OK;
|
|
|
|
for (i = 0; i < dest->n_prop_info; i++) {
|
|
const SpaPropInfo *info = &dest->prop_info[i];
|
|
SpaPropValue value;
|
|
|
|
if (!(info->flags & SPA_PROP_FLAG_WRITABLE))
|
|
continue;
|
|
if ((res = spa_props_get_prop (src, spa_props_index_for_id (src, info->id), &value)) < 0)
|
|
continue;
|
|
if (value.type != info->type)
|
|
return SPA_RESULT_WRONG_PROPERTY_TYPE;
|
|
if (value.size > info->maxsize)
|
|
return SPA_RESULT_WRONG_PROPERTY_SIZE;
|
|
|
|
if (info->offset)
|
|
memcpy ((uint8_t*)dest + info->offset, value.value, value.size);
|
|
|
|
dest->unset_mask &= ~(1u << i);
|
|
}
|
|
return SPA_RESULT_OK;
|
|
}
|