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buffer: introduce wlr_buffer_get_shm
References: https://github.com/swaywm/wlroots/issues/2399#issuecomment-769408708
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2 changed files with 27 additions and 0 deletions
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@ -15,12 +15,21 @@
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struct wlr_buffer;
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struct wlr_shm_attributes {
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int fd;
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uint32_t format;
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int width, height, stride;
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off_t offset;
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};
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struct wlr_buffer_impl {
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void (*destroy)(struct wlr_buffer *buffer);
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bool (*get_dmabuf)(struct wlr_buffer *buffer,
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struct wlr_dmabuf_attributes *attribs);
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bool (*get_data_ptr)(struct wlr_buffer *buffer, void **data,
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size_t *stride);
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bool (*get_shm)(struct wlr_buffer *buffer,
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struct wlr_shm_attributes *attribs);
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};
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/**
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@ -78,6 +87,16 @@ void wlr_buffer_unlock(struct wlr_buffer *buffer);
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*/
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bool wlr_buffer_get_dmabuf(struct wlr_buffer *buffer,
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struct wlr_dmabuf_attributes *attribs);
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/**
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* Read shared memory attributes of the buffer. If this buffer isn't shared
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* memory, returns false.
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*
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* The returned shared memory attributes are valid for the lifetime of the
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* wlr_buffer. The caller isn't responsible for cleaning up the shared memory
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* attributes.
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*/
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bool wlr_buffer_get_shm(struct wlr_buffer *buffer,
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struct wlr_shm_attributes *attribs);
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/**
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* A client buffer.
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@ -74,6 +74,14 @@ bool buffer_get_data_ptr(struct wlr_buffer *buffer, void **data,
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return buffer->impl->get_data_ptr(buffer, data, size);
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}
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bool wlr_buffer_get_shm(struct wlr_buffer *buffer,
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struct wlr_shm_attributes *attribs) {
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if (!buffer->impl->get_shm) {
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return false;
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}
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return buffer->impl->get_shm(buffer, attribs);
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}
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bool wlr_resource_is_buffer(struct wl_resource *resource) {
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return strcmp(wl_resource_get_class(resource), wl_buffer_interface.name) == 0;
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}
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