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monitor: add missing file

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Wim Taymans 2019-02-25 20:26:13 +01:00
parent aab2b5594f
commit 3d25adc598
1 changed files with 84 additions and 0 deletions
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84
spa/include/spa/monitor/utils.h Normal file
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/* Simple Plugin API
*
* Copyright © 2019 Wim Taymans
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifndef SPA_NODE_UTILS_H
#define SPA_NODE_UTILS_H
#ifdef __cplusplus
extern "C" {
#endif
#include <spa/monitor/device.h>
struct spa_result_device_params_data {
struct spa_pod_builder *builder;
struct spa_result_device_params data;
};
static inline int spa_result_func_device_params(struct spa_pending *pending,
const void *result)
{
struct spa_result_device_params_data *d =
(struct spa_result_device_params_data *)pending->data;
const struct spa_result_device_params *r =
(const struct spa_result_device_params *)result;
uint32_t offset = d->builder->state.offset;
spa_pod_builder_raw_padded(d->builder, r->param, SPA_POD_SIZE(r->param));
d->data.next = r->next;
d->data.param = SPA_MEMBER(d->builder->data, offset, struct spa_pod);
return 0;
}
static inline int spa_device_enum_params_sync(struct spa_device *device,
uint32_t id, uint32_t *index,
const struct spa_pod *filter,
struct spa_pod **param,
struct spa_pod_builder *builder,
struct spa_pending_queue *queue)
{
struct spa_result_device_params_data data = { builder, };
struct spa_pending pending;
int res;
spa_pending_queue_add(queue, 0, &pending,
spa_result_func_device_params, &data);
res = spa_device_enum_params(device, 0, id, *index, 1, filter);
spa_pending_remove(&pending);
if (data.data.param == NULL) {
if (res > 0)
res = 0;
} else {
*index = data.data.next;
*param = data.data.param;
res = 1;
}
return res;
}
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* SPA_NODE_UTILS_H */