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buffer: replace get_data_ptr with {begin,end}_data_ptr_access

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This new API allows buffer implementations to know when a user is
actively accessing the buffer's underlying storage. This is
important for the upcoming client-backed wlr_buffer implementation.
This commit is contained in:
Simon Ser 2021-06-02 17:02:28 +02:00 • committed by Simon Zeni
parent 9e58301df7
commit 38ba5881a0
7 changed files with 79 additions and 18 deletions
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6
include/wlr/types/wlr_buffer.h
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@ -26,10 +26,11 @@ struct wlr_buffer_impl {
void (*destroy)(struct wlr_buffer *buffer);
bool (*get_dmabuf)(struct wlr_buffer *buffer,
struct wlr_dmabuf_attributes *attribs);
bool (*get_data_ptr)(struct wlr_buffer *buffer, void **data,
uint32_t *format, size_t *stride);
bool (*get_shm)(struct wlr_buffer *buffer,
struct wlr_shm_attributes *attribs);
bool (*begin_data_ptr_access)(struct wlr_buffer *buffer, void **data,
uint32_t *format, size_t *stride);
void (*end_data_ptr_access)(struct wlr_buffer *buffer);
};
/**
@ -47,6 +48,7 @@ struct wlr_buffer {
bool dropped;
size_t n_locks;
bool accessing_data_ptr;
struct {
struct wl_signal destroy;