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