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mem: improve memory handling

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Add a memory pool to manage blocks of memory. Make it possible
to allocate and import blocks.

Add add_mem and remove_mem to the core events to signal a client
of a block of memory. Remove the client-node add_mem.

Make a global pool for memory and a per client pool where we
import and share the memory we need with the client.

Use the new memory pool to track and map memory in clients.
This commit is contained in:
Wim Taymans 2019-07-23 17:41:25 +02:00
parent a8bc8e1b1e
commit 2caf81c97c
16 changed files with 903 additions and 689 deletions
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47
src/extensions/client-node.h
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@ -46,46 +46,23 @@ struct pw_client_node_buffer {
struct spa_buffer *buffer; /**< buffer describing metadata and buffer memory */
};
#define PW_CLIENT_NODE_PROXY_EVENT_ADD_MEM 0
#define PW_CLIENT_NODE_PROXY_EVENT_TRANSPORT 1
#define PW_CLIENT_NODE_PROXY_EVENT_SET_PARAM 2
#define PW_CLIENT_NODE_PROXY_EVENT_SET_IO 3
#define PW_CLIENT_NODE_PROXY_EVENT_EVENT 4
#define PW_CLIENT_NODE_PROXY_EVENT_COMMAND 5
#define PW_CLIENT_NODE_PROXY_EVENT_ADD_PORT 6
#define PW_CLIENT_NODE_PROXY_EVENT_REMOVE_PORT 7
#define PW_CLIENT_NODE_PROXY_EVENT_PORT_SET_PARAM 8
#define PW_CLIENT_NODE_PROXY_EVENT_PORT_USE_BUFFERS 9
#define PW_CLIENT_NODE_PROXY_EVENT_PORT_SET_IO 10
#define PW_CLIENT_NODE_PROXY_EVENT_SET_ACTIVATION 11
#define PW_CLIENT_NODE_PROXY_EVENT_NUM 12
#define PW_CLIENT_NODE_PROXY_EVENT_TRANSPORT 0
#define PW_CLIENT_NODE_PROXY_EVENT_SET_PARAM 1
#define PW_CLIENT_NODE_PROXY_EVENT_SET_IO 2
#define PW_CLIENT_NODE_PROXY_EVENT_EVENT 3
#define PW_CLIENT_NODE_PROXY_EVENT_COMMAND 4
#define PW_CLIENT_NODE_PROXY_EVENT_ADD_PORT 5
#define PW_CLIENT_NODE_PROXY_EVENT_REMOVE_PORT 6
#define PW_CLIENT_NODE_PROXY_EVENT_PORT_SET_PARAM 7
#define PW_CLIENT_NODE_PROXY_EVENT_PORT_USE_BUFFERS 8
#define PW_CLIENT_NODE_PROXY_EVENT_PORT_SET_IO 9
#define PW_CLIENT_NODE_PROXY_EVENT_SET_ACTIVATION 10
#define PW_CLIENT_NODE_PROXY_EVENT_NUM 11
/** \ref pw_client_node events */
struct pw_client_node_proxy_events {
#define PW_VERSION_CLIENT_NODE_PROXY_EVENTS 0
uint32_t version;
/**
* Memory was added to a node
*
* Memory is given to a node as an fd in \a memfd of a certain
* memory \a type.
*
* Further references to this fd will be made with the per memory
* unique identifier \a mem_id.
*
* Buffers or controls will reference the memory by \a mem_id and
* mapping the specified area will give access to the memory.
*
* \param mem_id the id of the memory
* \param type the memory type
* \param memfd the fd of the memory
* \param flags flags for the \a memfd
*/
int (*add_mem) (void *object,
uint32_t mem_id,
uint32_t type,
int memfd,
uint32_t flags);
/**
* Notify of a new transport area
*