mirror of
https://gitlab.freedesktop.org/pipewire/pipewire.git
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81 lines
2.6 KiB
C
81 lines
2.6 KiB
C
/* Simple Plugin API
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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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#ifndef SPA_POD_DYNAMIC_H
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#define SPA_POD_DYNAMIC_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <spa/pod/builder.h>
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struct spa_pod_dynamic_builder {
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struct spa_pod_builder b;
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void *data;
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uint32_t extend;
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uint32_t _padding;
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};
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static int spa_pod_dynamic_builder_overflow(void *data, uint32_t size)
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{
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struct spa_pod_dynamic_builder *d = (struct spa_pod_dynamic_builder*)data;
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int32_t old_size = d->b.size;
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int32_t new_size = SPA_ROUND_UP_N(size, d->extend);
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void *old_data = d->b.data;
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if (old_data == d->data)
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d->b.data = NULL;
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if ((d->b.data = realloc(d->b.data, new_size)) == NULL)
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return -errno;
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if (old_data == d->data && d->b.data != old_data && old_size > 0)
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memcpy(d->b.data, old_data, old_size);
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d->b.size = new_size;
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return 0;
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}
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static inline void spa_pod_dynamic_builder_init(struct spa_pod_dynamic_builder *builder,
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void *data, uint32_t size, uint32_t extend)
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{
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static const struct spa_pod_builder_callbacks spa_pod_dynamic_builder_callbacks = {
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SPA_VERSION_POD_BUILDER_CALLBACKS,
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.overflow = spa_pod_dynamic_builder_overflow
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};
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builder->b = SPA_POD_BUILDER_INIT(data, size);
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spa_pod_builder_set_callbacks(&builder->b, &spa_pod_dynamic_builder_callbacks, builder);
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builder->extend = extend;
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builder->data = data;
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}
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static inline void spa_pod_dynamic_builder_clean(struct spa_pod_dynamic_builder *builder)
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{
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if (builder->data != builder->b.data)
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free(builder->b.data);
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}
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /* SPA_POD_DYNAMIC_H */
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