138 lines
3.7 KiB
C
138 lines
3.7 KiB
C
#include <assert.h>
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#include <drm_fourcc.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <string.h>
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#include <wlr/render/interface.h>
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#include <wlr/render/wlr_texture.h>
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#include "render/pixel_format.h"
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#include "types/wlr_buffer.h"
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void wlr_texture_init(struct wlr_texture *texture, struct wlr_renderer *renderer,
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const struct wlr_texture_impl *impl, uint32_t width, uint32_t height) {
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assert(renderer);
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*texture = (struct wlr_texture){
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.renderer = renderer,
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.impl = impl,
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.width = width,
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.height = height,
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};
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}
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void wlr_texture_destroy(struct wlr_texture *texture) {
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if (texture && texture->impl && texture->impl->destroy) {
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texture->impl->destroy(texture);
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} else {
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free(texture);
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}
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}
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void wlr_texture_read_pixels_options_get_src_box(
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const struct wlr_texture_read_pixels_options *options,
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const struct wlr_texture *texture, struct wlr_box *box) {
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if (wlr_box_empty(&options->src_box)) {
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*box = (struct wlr_box){
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.x = 0,
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.y = 0,
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.width = texture->width,
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.height = texture->height,
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};
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return;
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}
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*box = options->src_box;
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}
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void *wlr_texture_read_pixel_options_get_data(
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const struct wlr_texture_read_pixels_options *options) {
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const struct wlr_pixel_format_info *fmt = drm_get_pixel_format_info(options->format);
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return (char *)options->data +
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pixel_format_info_min_stride(fmt, options->dst_x) +
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options->dst_y * options->stride;
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}
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bool wlr_texture_read_pixels(struct wlr_texture *texture,
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const struct wlr_texture_read_pixels_options *options) {
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if (!texture->impl->read_pixels) {
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return false;
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}
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return texture->impl->read_pixels(texture, options);
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}
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uint32_t wlr_texture_preferred_read_format(struct wlr_texture *texture) {
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if (!texture->impl->preferred_read_format) {
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return DRM_FORMAT_INVALID;
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}
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return texture->impl->preferred_read_format(texture);
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}
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struct wlr_texture *wlr_texture_from_pixels(struct wlr_renderer *renderer,
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uint32_t fmt, uint32_t stride, uint32_t width, uint32_t height,
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const void *data) {
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assert(width > 0);
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assert(height > 0);
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assert(stride > 0);
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assert(data);
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struct wlr_readonly_data_buffer *buffer =
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readonly_data_buffer_create(fmt, stride, width, height, data);
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if (buffer == NULL) {
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return NULL;
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}
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struct wlr_texture *texture =
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wlr_texture_from_buffer(renderer, &buffer->base);
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// By this point, the renderer should have locked the buffer if it still
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// needs to access it in the future.
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readonly_data_buffer_drop(buffer);
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return texture;
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}
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struct wlr_texture *wlr_texture_from_dmabuf(struct wlr_renderer *renderer,
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struct wlr_dmabuf_attributes *attribs) {
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struct wlr_dmabuf_buffer *buffer = dmabuf_buffer_create(attribs);
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if (buffer == NULL) {
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return NULL;
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}
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struct wlr_texture *texture =
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wlr_texture_from_buffer(renderer, &buffer->base);
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// By this point, the renderer should have locked the buffer if it still
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// needs to access it in the future.
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dmabuf_buffer_drop(buffer);
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return texture;
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}
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struct wlr_texture *wlr_texture_from_buffer(struct wlr_renderer *renderer,
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struct wlr_buffer *buffer) {
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if (!renderer->impl->texture_from_buffer) {
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return NULL;
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}
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return renderer->impl->texture_from_buffer(renderer, buffer);
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}
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bool wlr_texture_update_from_buffer(struct wlr_texture *texture,
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struct wlr_buffer *buffer, const pixman_region32_t *damage) {
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if (!texture->impl->update_from_buffer) {
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return false;
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}
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if (texture->width != (uint32_t)buffer->width ||
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texture->height != (uint32_t)buffer->height) {
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return false;
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}
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const pixman_box32_t *extents = pixman_region32_extents(damage);
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if (extents->x1 < 0 || extents->y1 < 0 || extents->x2 > buffer->width ||
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extents->y2 > buffer->height) {
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return false;
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}
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return texture->impl->update_from_buffer(texture, buffer, damage);
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}
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