diff options
author | Simon Ser <contact@emersion.fr> | 2021-08-25 09:33:19 +0200 |
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committer | Simon Zeni <simon@bl4ckb0ne.ca> | 2021-08-25 09:57:20 -0400 |
commit | 3ce2ea9e16fcd1bfab4ec9d5994fa721c5d58dcd (patch) | |
tree | 1bce6445158968c4d73cd73be30c141468dbc84c /render/shm_allocator.c | |
parent | b37731cdbbef4dc52033c2d26b04d2329720fa07 (diff) |
Move allocator stuff into new directory
Add render/allocator/ and include/render/allocator/ to hold
everything allocator-related.
Diffstat (limited to 'render/shm_allocator.c')
-rw-r--r-- | render/shm_allocator.c | 116 |
1 files changed, 0 insertions, 116 deletions
diff --git a/render/shm_allocator.c b/render/shm_allocator.c deleted file mode 100644 index 1797433f..00000000 --- a/render/shm_allocator.c +++ /dev/null @@ -1,116 +0,0 @@ -#include <assert.h> -#include <drm_fourcc.h> -#include <stdlib.h> -#include <sys/mman.h> -#include <unistd.h> -#include <wlr/util/log.h> -#include "render/pixel_format.h" -#include "render/shm_allocator.h" -#include "util/shm.h" - -static const struct wlr_buffer_impl buffer_impl; - -static struct wlr_shm_buffer *shm_buffer_from_buffer( - struct wlr_buffer *wlr_buffer) { - assert(wlr_buffer->impl == &buffer_impl); - return (struct wlr_shm_buffer *)wlr_buffer; -} - -static void buffer_destroy(struct wlr_buffer *wlr_buffer) { - struct wlr_shm_buffer *buffer = shm_buffer_from_buffer(wlr_buffer); - munmap(buffer->data, buffer->size); - close(buffer->shm.fd); - free(buffer); -} - -static bool buffer_get_shm(struct wlr_buffer *wlr_buffer, - struct wlr_shm_attributes *shm) { - struct wlr_shm_buffer *buffer = shm_buffer_from_buffer(wlr_buffer); - memcpy(shm, &buffer->shm, sizeof(*shm)); - return true; -} - -static bool shm_buffer_begin_data_ptr_access(struct wlr_buffer *wlr_buffer, - void **data, uint32_t *format, size_t *stride) { - struct wlr_shm_buffer *buffer = shm_buffer_from_buffer(wlr_buffer); - *data = buffer->data; - *format = buffer->shm.format; - *stride = buffer->shm.stride; - return true; -} - -static void shm_buffer_end_data_ptr_access(struct wlr_buffer *wlr_buffer) { - // This space is intentionally left blank -} - -static const struct wlr_buffer_impl buffer_impl = { - .destroy = buffer_destroy, - .get_shm = buffer_get_shm, - .begin_data_ptr_access = shm_buffer_begin_data_ptr_access, - .end_data_ptr_access = shm_buffer_end_data_ptr_access, -}; - -static struct wlr_buffer *allocator_create_buffer( - struct wlr_allocator *wlr_allocator, int width, int height, - const struct wlr_drm_format *format) { - const struct wlr_pixel_format_info *info = - drm_get_pixel_format_info(format->format); - if (info == NULL) { - wlr_log(WLR_ERROR, "Unsupported pixel format 0x%"PRIX32, format->format); - return NULL; - } - - struct wlr_shm_buffer *buffer = calloc(1, sizeof(*buffer)); - if (buffer == NULL) { - return NULL; - } - wlr_buffer_init(&buffer->base, &buffer_impl, width, height); - - // TODO: consider using a single file for multiple buffers - int bytes_per_pixel = info->bpp / 8; - int stride = width * bytes_per_pixel; // TODO: align? - buffer->size = stride * height; - buffer->shm.fd = allocate_shm_file(buffer->size); - if (buffer->shm.fd < 0) { - free(buffer); - return NULL; - } - - buffer->shm.format = format->format; - buffer->shm.width = width; - buffer->shm.height = height; - buffer->shm.stride = stride; - buffer->shm.offset = 0; - - buffer->data = mmap(NULL, buffer->size, PROT_READ | PROT_WRITE, MAP_SHARED, - buffer->shm.fd, 0); - if (buffer->data == MAP_FAILED) { - wlr_log_errno(WLR_ERROR, "mmap failed"); - close(buffer->shm.fd); - free(buffer); - return NULL; - } - - return &buffer->base; -} - -static void allocator_destroy(struct wlr_allocator *wlr_allocator) { - free(wlr_allocator); -} - -static const struct wlr_allocator_interface allocator_impl = { - .destroy = allocator_destroy, - .create_buffer = allocator_create_buffer, -}; - -struct wlr_allocator *wlr_shm_allocator_create(void) { - struct wlr_shm_allocator *allocator = calloc(1, sizeof(*allocator)); - if (allocator == NULL) { - return NULL; - } - wlr_allocator_init(&allocator->base, &allocator_impl, - WLR_BUFFER_CAP_DATA_PTR | WLR_BUFFER_CAP_SHM); - - wlr_log(WLR_DEBUG, "Created shm allocator"); - return &allocator->base; -} |