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b943c31fd8
Including C headers inside of `extern "C"` breaks use from C++. Hoist the includes of standard C headers above the block so we don't try to mangle the stdlib. I initially tried to scope this with a targeted change but it's too hard to do correctly that way. This way, we avoid whack-a-mole. Firefox is working around this in their e21461b7b8b39cc31ba53c47d4f6f310c673ff2f commit. Bug: https://bugzilla.mozilla.org/1953080
94 lines
2.5 KiB
C
94 lines
2.5 KiB
C
/* Simple Plugin API */
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/* SPDX-FileCopyrightText: Copyright © 2019 Wim Taymans */
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/* SPDX-License-Identifier: MIT */
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#ifndef SPA_DEVICE_UTILS_H
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#define SPA_DEVICE_UTILS_H
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#include <spa/pod/builder.h>
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#include <spa/monitor/device.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef SPA_API_DEVICE_UTILS
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#ifdef SPA_API_IMPL
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#define SPA_API_DEVICE_UTILS SPA_API_IMPL
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#else
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#define SPA_API_DEVICE_UTILS static inline
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#endif
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#endif
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/**
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* \addtogroup spa_device
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* \{
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*/
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struct spa_result_device_params_data {
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struct spa_pod_builder *builder;
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struct spa_result_device_params data;
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};
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SPA_API_DEVICE_UTILS void spa_result_func_device_params(void *data, int seq SPA_UNUSED, int res SPA_UNUSED,
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uint32_t type SPA_UNUSED, const void *result)
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{
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struct spa_result_device_params_data *d =
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(struct spa_result_device_params_data *)data;
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const struct spa_result_device_params *r =
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(const struct spa_result_device_params *)result;
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uint32_t offset = d->builder->state.offset;
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if (spa_pod_builder_raw_padded(d->builder, r->param, SPA_POD_SIZE(r->param)) < 0)
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return;
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d->data.next = r->next;
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d->data.param = spa_pod_builder_deref(d->builder, offset);
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}
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SPA_API_DEVICE_UTILS int spa_device_enum_params_sync(struct spa_device *device,
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uint32_t id, uint32_t *index,
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const struct spa_pod *filter,
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struct spa_pod **param,
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struct spa_pod_builder *builder)
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{
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struct spa_result_device_params_data data = { builder, {0}};
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struct spa_hook listener = {{0}, {0}, 0, 0};
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static const struct spa_device_events device_events = {
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.version = SPA_VERSION_DEVICE_EVENTS,
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.info = NULL,
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.result = spa_result_func_device_params,
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};
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int res;
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spa_device_add_listener(device, &listener, &device_events, &data);
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res = spa_device_enum_params(device, 0, id, *index, 1, filter);
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spa_hook_remove(&listener);
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if (data.data.param == NULL) {
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if (res > 0)
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res = 0;
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} else {
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*index = data.data.next;
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*param = data.data.param;
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res = 1;
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}
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return res;
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}
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#define spa_device_emit(hooks,method,version,...) \
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spa_hook_list_call_simple(hooks, struct spa_device_events, \
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method, version, ##__VA_ARGS__)
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#define spa_device_emit_info(hooks,i) spa_device_emit(hooks,info, 0, i)
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#define spa_device_emit_result(hooks,s,r,t,res) spa_device_emit(hooks,result, 0, s, r, t, res)
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#define spa_device_emit_event(hooks,e) spa_device_emit(hooks,event, 0, e)
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#define spa_device_emit_object_info(hooks,id,i) spa_device_emit(hooks,object_info, 0, id, i)
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/**
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* \}
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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_DEVICE_UTILS_H */
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