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58 lines
1.9 KiB
C
58 lines
1.9 KiB
C
/* Spa Volume plugin
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*
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* Copyright © 2018 Wim Taymans
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <errno.h>
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#include <stdio.h>
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#include <spa/support/plugin.h>
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#define MAX_FACTORIES 16
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static const struct spa_handle_factory *factories[MAX_FACTORIES];
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static uint32_t n_factories;
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int spa_handle_factory_register(const struct spa_handle_factory *factory)
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{
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if (n_factories >= MAX_FACTORIES) {
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fprintf(stderr, "too many factories\n");
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return -ENOMEM;
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}
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factories[n_factories++] = factory;
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return 0;
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}
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int
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spa_handle_factory_enum(const struct spa_handle_factory **factory, uint32_t *index)
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{
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spa_return_val_if_fail(factory != NULL, -EINVAL);
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spa_return_val_if_fail(index != NULL, -EINVAL);
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if (*index >= n_factories)
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return 0;
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*factory = factories[(*index)++];
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return 1;
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}
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