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#include <drm_fourcc.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <wlr/render/drm_format_set.h>
#include <wlr/util/log.h>
void wlr_drm_format_set_finish(struct wlr_drm_format_set *set) {
for (size_t i = 0; i < set->len; ++i) {
free(set->formats[i]);
}
free(set->formats);
set->len = 0;
set->cap = 0;
set->formats = NULL;
}
static struct wlr_drm_format **format_set_get_ref(struct wlr_drm_format_set *set,
uint32_t format) {
for (size_t i = 0; i < set->len; ++i) {
if (set->formats[i]->format == format) {
return &set->formats[i];
}
}
return NULL;
}
const struct wlr_drm_format *wlr_drm_format_set_get(
const struct wlr_drm_format_set *set, uint32_t format) {
struct wlr_drm_format **ptr =
format_set_get_ref((struct wlr_drm_format_set *)set, format);
return ptr ? *ptr : NULL;
}
bool wlr_drm_format_set_add(struct wlr_drm_format_set *set, uint32_t format,
uint64_t modifier) {
struct wlr_drm_format **ptr = format_set_get_ref(set, format);
if (ptr) {
struct wlr_drm_format *fmt = *ptr;
if (modifier == DRM_FORMAT_MOD_INVALID) {
return true;
}
for (size_t i = 0; i < fmt->len; ++i) {
if (fmt->modifiers[i] == modifier) {
return true;
}
}
if (fmt->len == fmt->cap) {
size_t cap = fmt->cap ? fmt->cap * 2 : 4;
fmt = realloc(fmt, sizeof(*fmt) + sizeof(fmt->modifiers[0]) * cap);
if (!fmt) {
wlr_log_errno(WLR_ERROR, "Allocation failed");
return false;
}
fmt->cap = cap;
*ptr = fmt;
}
fmt->modifiers[fmt->len++] = modifier;
return true;
}
size_t cap = modifier != DRM_FORMAT_MOD_INVALID ? 4 : 0;
struct wlr_drm_format *fmt =
calloc(1, sizeof(*fmt) + sizeof(fmt->modifiers[0]) * cap);
if (!fmt) {
wlr_log_errno(WLR_ERROR, "Allocation failed");
return false;
}
fmt->format = format;
if (cap) {
fmt->cap = cap;
fmt->len = 1;
fmt->modifiers[0] = modifier;
}
if (set->len == set->cap) {
size_t new = set->cap ? set->cap * 2 : 4;
struct wlr_drm_format **tmp = realloc(set->formats,
sizeof(*fmt) + sizeof(fmt->modifiers[0]) * new);
if (!tmp) {
wlr_log_errno(WLR_ERROR, "Allocation failed");
free(fmt);
return false;
}
set->cap = new;
set->formats = tmp;
}
set->formats[set->len++] = fmt;
return true;
}
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