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/* 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.
*/
#include <stdio.h>
#include <errno.h>
#include <spa/pod/builder.h>
#include <spa/pod/parser.h>
#include <spa/utils/result.h>
#include <pipewire/private.h>
#include "connection.h"
#include "protocol-footer.h"
#include "defs.h"
PW_LOG_TOPIC_EXTERN(mod_topic);
#define PW_LOG_TOPIC_DEFAULT mod_topic
struct footer_builder {
struct spa_pod_builder *builder;
struct spa_pod_frame outer;
struct spa_pod_frame inner;
unsigned int started:1;
};
#define FOOTER_BUILDER_INIT(builder) ((struct footer_builder) { (builder) })
static void start_footer_entry(struct footer_builder *fb, uint32_t opcode)
{
if (!fb->started) {
spa_pod_builder_push_struct(fb->builder, &fb->outer);
fb->started = true;
}
spa_pod_builder_id(fb->builder, opcode);
spa_pod_builder_push_struct(fb->builder, &fb->inner);
}
static void end_footer_entry(struct footer_builder *fb)
{
spa_pod_builder_pop(fb->builder, &fb->inner);
}
static void end_footer(struct footer_builder *fb)
{
if (!fb->started)
return;
spa_pod_builder_pop(fb->builder, &fb->outer);
}
void marshal_core_footers(struct footer_core_global_state *state, struct pw_core *core,
struct spa_pod_builder *builder)
{
struct footer_builder fb = FOOTER_BUILDER_INIT(builder);
if (core->recv_generation != state->last_recv_generation) {
state->last_recv_generation = core->recv_generation;
pw_log_trace("core %p: send client registry generation:%"PRIu64,
core, core->recv_generation);
start_footer_entry(&fb, FOOTER_CLIENT_OPCODE_GENERATION);
spa_pod_builder_long(fb.builder, core->recv_generation);
end_footer_entry(&fb);
}
end_footer(&fb);
}
void marshal_client_footers(struct footer_client_global_state *state, struct pw_impl_client *client,
struct spa_pod_builder *builder)
{
struct footer_builder fb = FOOTER_BUILDER_INIT(builder);
if (client->context->generation != client->sent_generation) {
client->sent_generation = client->context->generation;
pw_log_trace("impl-client %p: send server registry generation:%"PRIu64,
client, client->context->generation);
start_footer_entry(&fb, FOOTER_CORE_OPCODE_GENERATION);
spa_pod_builder_long(fb.builder, client->context->generation);
end_footer_entry(&fb);
}
end_footer(&fb);
}
int demarshal_core_generation(void *object, struct spa_pod_parser *parser)
{
struct pw_core *core = object;
int64_t generation;
if (spa_pod_parser_get_long(parser, &generation) < 0)
return -EINVAL;
core->recv_generation = SPA_MAX(core->recv_generation,
(uint64_t)generation);
pw_log_trace("core %p: recv server registry generation:%"PRIu64,
core, generation);
return 0;
}
int demarshal_client_generation(void *object, struct spa_pod_parser *parser)
{
struct pw_impl_client *client = object;
int64_t generation;
if (spa_pod_parser_get_long(parser, &generation) < 0)
return -EINVAL;
client->recv_generation = SPA_MAX(client->recv_generation,
(uint64_t)generation);
pw_log_trace("impl-client %p: recv client registry generation:%"PRIu64,
client, generation);
return 0;
}
const struct footer_demarshal footer_core_demarshal[FOOTER_CORE_OPCODE_LAST] = {
[FOOTER_CORE_OPCODE_GENERATION] = (struct footer_demarshal){ .demarshal = demarshal_core_generation },
};
const struct footer_demarshal footer_client_demarshal[FOOTER_CLIENT_OPCODE_LAST] = {
[FOOTER_CLIENT_OPCODE_GENERATION] = (struct footer_demarshal){ .demarshal = demarshal_client_generation },
};
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