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Diffstat (limited to 'third_party/pipewire/spa/monitor/utils.h')
| -rw-r--r-- | third_party/pipewire/spa/monitor/utils.h | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/third_party/pipewire/spa/monitor/utils.h b/third_party/pipewire/spa/monitor/utils.h new file mode 100644 index 0000000000..169fe4700c --- /dev/null +++ b/third_party/pipewire/spa/monitor/utils.h @@ -0,0 +1,106 @@ +/* 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_DEVICE_UTILS_H +#define SPA_DEVICE_UTILS_H + +#ifdef __cplusplus +extern "C" { +#endif + +#include <spa/pod/builder.h> +#include <spa/monitor/device.h> + +/** + * \addtogroup spa_device + * \{ + */ + +struct spa_result_device_params_data { + struct spa_pod_builder *builder; + struct spa_result_device_params data; +}; + +static inline void spa_result_func_device_params(void *data, int seq, int res, + uint32_t type, const void *result) +{ + struct spa_result_device_params_data *d = + (struct spa_result_device_params_data *)data; + const struct spa_result_device_params *r = + (const struct spa_result_device_params *)result; + uint32_t offset = d->builder->state.offset; + if (spa_pod_builder_raw_padded(d->builder, r->param, SPA_POD_SIZE(r->param)) < 0) + return; + d->data.next = r->next; + d->data.param = spa_pod_builder_deref(d->builder, offset); +} + +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_result_device_params_data data = { builder, }; + struct spa_hook listener = {{0}}; + static const struct spa_device_events device_events = { + .version = SPA_VERSION_DEVICE_EVENTS, + .info = NULL, + .result = spa_result_func_device_params, + }; + int res; + + spa_device_add_listener(device, &listener, &device_events, &data); + res = spa_device_enum_params(device, 0, id, *index, 1, filter); + spa_hook_remove(&listener); + + if (data.data.param == NULL) { + if (res > 0) + res = 0; + } else { + *index = data.data.next; + *param = data.data.param; + res = 1; + } + return res; +} + +#define spa_device_emit(hooks,method,version,...) \ + spa_hook_list_call_simple(hooks, struct spa_device_events, \ + method, version, ##__VA_ARGS__) + +#define spa_device_emit_info(hooks,i) spa_device_emit(hooks,info, 0, i) +#define spa_device_emit_result(hooks,s,r,t,res) spa_device_emit(hooks,result, 0, s, r, t, res) +#define spa_device_emit_event(hooks,e) spa_device_emit(hooks,event, 0, e) +#define spa_device_emit_object_info(hooks,id,i) spa_device_emit(hooks,object_info, 0, id, i) + +/** + * \} + */ + +#ifdef __cplusplus +} /* extern "C" */ +#endif + +#endif /* SPA_DEVICE_UTILS_H */ |