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pod: improve parser and builder

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Remove the spa_pod_iter helpers
Remove builder/parser vararg recurse option, you have to
manually recurse into structures when needed. This simplifies
things a lot.
Pass spa_pod_frames to builder and parser explicitly, we don't
have to keep an internal stack anymore.
The parser is now almost a mirror image of the builder.
Make the parser safer when iterating over objects, add functions
to check and get pod contents in a safe way.
Make the builder return errno style results on errors
Improve performance of object properties when they are stored and
retrieved in the same order.
Add many more tests for the builder and parser
Add some benchmarks
This commit is contained in:
Wim Taymans 2019-01-22 17:38:23 +01:00
parent 878ae769ef
commit 351fb9ce29
36 changed files with 1605 additions and 973 deletions
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32
src/modules/module-protocol-native/connection.c
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@ -352,20 +352,22 @@ static inline void *begin_write(struct pw_protocol_native_connection *conn, uint
return p + 2;
}
static uint32_t write_pod(struct spa_pod_builder *b, const void *data, uint32_t size)
static int builder_overflow(void *callbacks_data, uint32_t size)
{
struct impl *impl = SPA_CONTAINER_OF(b, struct impl, builder);
uint32_t ref = b->state.offset;
struct impl *impl = callbacks_data;
struct spa_pod_builder *b = &impl->builder;
if (b->size <= ref) {
b->size = SPA_ROUND_UP_N(ref + size, 4096);
b->data = begin_write(&impl->this, b->size);
}
memcpy(SPA_MEMBER(b->data, ref, void), data, size);
return ref;
b->size = SPA_ROUND_UP_N(size, 4096);
if ((b->data = begin_write(&impl->this, b->size)) == NULL)
return -ENOMEM;
return 0;
}
static const struct spa_pod_builder_callbacks builder_callbacks = {
SPA_VERSION_POD_BUILDER_CALLBACKS,
.overflow = builder_overflow
};
struct spa_pod_builder *
pw_protocol_native_connection_begin_resource(struct pw_protocol_native_connection *conn,
struct pw_resource *resource,
@ -375,8 +377,9 @@ pw_protocol_native_connection_begin_resource(struct pw_protocol_native_connectio
impl->dest_id = resource->id;
impl->opcode = opcode;
impl->builder = (struct spa_pod_builder) { NULL, 0, 0, write_pod };
impl->builder = SPA_POD_BUILDER_INIT(NULL, 0);
impl->builder.callbacks = &builder_callbacks;
impl->builder.callbacks_data = impl;
return &impl->builder;
}
@ -389,8 +392,9 @@ pw_protocol_native_connection_begin_proxy(struct pw_protocol_native_connection *
impl->dest_id = proxy->id;
impl->opcode = opcode;
impl->builder = (struct spa_pod_builder) { NULL, 0, 0, write_pod, };
impl->builder = SPA_POD_BUILDER_INIT(NULL, 0);
impl->builder.callbacks = &builder_callbacks;
impl->builder.callbacks_data = impl;
return &impl->builder;
}