mirror of
https://gitlab.freedesktop.org/pipewire/pipewire.git
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0d2f5a1386
Serialize format and properties. Simplify the properties by moving the unset-mask inside the property structure. We can then also just use the index of the property as the bit in the mask. Work on stopping on disconnect
112 lines
3.1 KiB
C
112 lines
3.1 KiB
C
/* Simple Plugin API
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* Copyright (C) 2016 Wim Taymans <wim.taymans@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include <stdint.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <string.h>
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#include <spa/props.h>
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SpaResult
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spa_props_set_prop (SpaProps *props,
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unsigned int index,
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const SpaPropValue *value)
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{
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const SpaPropInfo *info;
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if (props == NULL || value == NULL)
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return SPA_RESULT_INVALID_ARGUMENTS;
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if (index >= props->n_prop_info)
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return SPA_RESULT_INVALID_PROPERTY_INDEX;
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info = &props->prop_info[index];
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if ((info->flags & SPA_PROP_FLAG_WRITABLE) == 0)
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return SPA_RESULT_INVALID_PROPERTY_ACCESS;
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if (info->type != value->type)
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return SPA_RESULT_WRONG_PROPERTY_TYPE;
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if (info->maxsize < value->size)
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return SPA_RESULT_WRONG_PROPERTY_SIZE;
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if (info->offset != 0)
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memcpy ((uint8_t*)props + info->offset, value->value, value->size);
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props->unset_mask &= ~(1 << index);
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return SPA_RESULT_OK;
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}
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SpaResult
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spa_props_get_prop (const SpaProps *props,
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unsigned int index,
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SpaPropValue *value)
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{
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const SpaPropInfo *info;
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if (props == NULL || value == NULL)
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return SPA_RESULT_INVALID_ARGUMENTS;
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if (index >= props->n_prop_info)
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return SPA_RESULT_INVALID_PROPERTY_INDEX;
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info = &props->prop_info[index];
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if ((info->flags & SPA_PROP_FLAG_READABLE) == 0)
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return SPA_RESULT_INVALID_PROPERTY_ACCESS;
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if (props->unset_mask & (1 << index))
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return SPA_RESULT_PROPERTY_UNSET;
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value->type = info->type;
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value->size = info->maxsize;
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if (info->offset != 0)
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value->value = (uint8_t*)props + info->offset;
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return SPA_RESULT_OK;
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}
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SpaResult
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spa_props_copy (const SpaProps *src,
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SpaProps *dest)
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{
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int i;
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SpaResult res;
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if (src == dest)
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return SPA_RESULT_OK;
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for (i = 0; i < dest->n_prop_info; i++) {
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const SpaPropInfo *info = &dest->prop_info[i];
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SpaPropValue value;
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if (!(info->flags & SPA_PROP_FLAG_WRITABLE))
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continue;
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if ((res = spa_props_get_prop (src, spa_props_index_for_id (src, info->id), &value)) < 0)
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continue;
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if (value.type != info->type)
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return SPA_RESULT_WRONG_PROPERTY_TYPE;
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if (value.size > info->maxsize)
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return SPA_RESULT_WRONG_PROPERTY_SIZE;
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if (info->offset)
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memcpy ((uint8_t*)dest + info->offset, value.value, value.size);
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dest->unset_mask &= ~(1 << i);
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}
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return SPA_RESULT_OK;
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}
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