89 lines
2.5 KiB
C
89 lines
2.5 KiB
C
#ifndef TYPES_WLR_BUFFER
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#define TYPES_WLR_BUFFER
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#include <wlr/types/wlr_buffer.h>
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struct wlr_shm_client_buffer {
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struct wlr_buffer base;
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uint32_t format;
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size_t stride;
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// The following fields are NULL if the client has destroyed the wl_buffer
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struct wl_resource *resource;
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struct wl_shm_buffer *shm_buffer;
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// This is used to keep the backing storage alive after the client has
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// destroyed the wl_buffer
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struct wl_shm_pool *saved_shm_pool;
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void *saved_data;
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struct wl_listener resource_destroy;
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struct wl_listener release;
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};
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struct wlr_shm_client_buffer *shm_client_buffer_create(
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struct wl_resource *resource);
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/**
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* A read-only buffer that holds a data pointer.
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*
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* This is suitable for passing raw pixel data to a function that accepts a
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* wlr_buffer.
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*/
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struct wlr_readonly_data_buffer {
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struct wlr_buffer base;
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const void *data;
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uint32_t format;
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size_t stride;
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void *saved_data;
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};
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/**
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* Wraps a read-only data pointer into a wlr_buffer. The data pointer may be
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* accessed until readonly_data_buffer_drop() is called.
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*/
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struct wlr_readonly_data_buffer *readonly_data_buffer_create(uint32_t format,
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size_t stride, uint32_t width, uint32_t height, const void *data);
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/**
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* Drops ownership of the buffer (see wlr_buffer_drop() for more details) and
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* perform a copy of the data pointer if a consumer still has the buffer locked.
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*/
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bool readonly_data_buffer_drop(struct wlr_readonly_data_buffer *buffer);
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struct wlr_dmabuf_buffer {
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struct wlr_buffer base;
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struct wlr_dmabuf_attributes dmabuf;
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bool saved;
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};
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/**
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* Wraps a DMA-BUF into a wlr_buffer. The DMA-BUF may be accessed until
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* dmabuf_buffer_drop() is called.
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*/
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struct wlr_dmabuf_buffer *dmabuf_buffer_create(
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struct wlr_dmabuf_attributes *dmabuf);
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/**
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* Drops ownership of the buffer (see wlr_buffer_drop() for more details) and
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* takes a reference to the DMA-BUF (by dup'ing its file descriptors) if a
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* consumer still has the buffer locked.
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*/
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bool dmabuf_buffer_drop(struct wlr_dmabuf_buffer *buffer);
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/**
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* Get a pointer to a region of memory referring to the buffer's underlying
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* storage. The format and stride can be used to interpret the memory region
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* contents.
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*
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* The returned pointer should be pointing to a valid memory region for read
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* and write operations. The returned pointer is only valid up to the next
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* buffer_end_data_ptr_access call.
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*/
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bool buffer_begin_data_ptr_access(struct wlr_buffer *buffer, void **data,
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uint32_t *format, size_t *stride);
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void buffer_end_data_ptr_access(struct wlr_buffer *buffer);
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#endif
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