pipewire/src/modules/module-protocol-native/protocol-footer.h
Pauli Virtanen a9accd1668 protocol-native: footer pre_demarshal must come first
Message footer should be handled before attempting to find the object
the main message is sent to / checking permissions, because it is not
aimed at a specific object.  E.g. the registry generation updates should
be handled regardless of whether the main message is valid or not,
because the updates will not be re-sent.

Fixes registry generation updates sometimes going missing.
2022-02-26 17:48:51 +00:00

60 lines
2.1 KiB
C

/* PipeWire
*
* Copyright © 2018 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.
*/
/*
* Protocol footer.
*
* For passing around general state data that is not associated with
* messages sent to objects.
*/
enum {
FOOTER_CORE_OPCODE_GENERATION = 0,
FOOTER_CORE_OPCODE_LAST
};
enum {
FOOTER_CLIENT_OPCODE_GENERATION = 0,
FOOTER_CLIENT_OPCODE_LAST
};
struct footer_core_global_state {
uint64_t last_recv_generation;
};
struct footer_client_global_state {
uint64_t last_sent_generation;
};
struct footer_demarshal {
int (*demarshal)(void *object, struct spa_pod_parser *parser);
};
extern const struct footer_demarshal footer_core_demarshal[FOOTER_CORE_OPCODE_LAST];
extern const struct footer_demarshal footer_client_demarshal[FOOTER_CLIENT_OPCODE_LAST];
void marshal_core_footers(struct footer_core_global_state *state, struct pw_core *core,
struct spa_pod_builder *builder);
void marshal_client_footers(struct footer_client_global_state *state, struct pw_impl_client *client,
struct spa_pod_builder *builder);