diff options
Diffstat (limited to 'src/wld/wayland-drm.c')
-rw-r--r-- | src/wld/wayland-drm.c | 296 |
1 files changed, 296 insertions, 0 deletions
diff --git a/src/wld/wayland-drm.c b/src/wld/wayland-drm.c new file mode 100644 index 0000000..7e7fe4c --- /dev/null +++ b/src/wld/wayland-drm.c @@ -0,0 +1,296 @@ +/* wld: wayland-drm.c + * + * Copyright (c) 2013, 2014 Michael Forney + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#include "wayland.h" +#include "drm.h" +#include "wayland-drm-client-protocol.h" +#include "wayland-private.h" +#include "wld-private.h" +#include "drm-private.h" + +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <fcntl.h> +#include <xf86drm.h> + +struct drm_context +{ + struct wayland_context base; + struct wld_context * driver_context; + struct wl_drm * wl; + struct wl_registry * registry; + struct wl_array formats; + uint32_t capabilities; + int fd; + bool authenticated; +}; + +#define WAYLAND_IMPL_NAME drm +#include "interface/context.h" +#include "interface/wayland.h" +IMPL(drm_context, wld_context) + +static void registry_global(void * data, struct wl_registry * registry, + uint32_t name, const char * interface, + uint32_t version); +static void registry_global_remove(void * data, struct wl_registry * registry, + uint32_t name); + +static void drm_device(void * data, struct wl_drm * wl, const char * name); +static void drm_format(void * data, struct wl_drm * wl, uint32_t format); +static void drm_authenticated(void * data, struct wl_drm * wl); +static void drm_capabilities(void * data, struct wl_drm * wl, + uint32_t capabilities); + +const static struct wl_registry_listener registry_listener = { + .global = ®istry_global, + .global_remove = ®istry_global_remove +}; + +const static struct wl_drm_listener drm_listener = { + .device = &drm_device, + .format = &drm_format, + .authenticated = &drm_authenticated, + .capabilities = &drm_capabilities +}; + +struct wayland_context * wayland_create_context(struct wl_display * display, + struct wl_event_queue * queue) +{ + struct drm_context * context; + + if (!(context = malloc(sizeof *context))) + goto error0; + + context_initialize(&context->base.base, &wld_context_impl); + context->wl = NULL; + context->fd = -1; + context->capabilities = 0; + wl_array_init(&context->formats); + + if (!(context->registry = wl_display_get_registry(display))) + goto error1; + + wl_registry_add_listener(context->registry, ®istry_listener, context); + wl_proxy_set_queue((struct wl_proxy *) context->registry, queue); + + /* Wait for wl_drm global. */ + wl_display_roundtrip_queue(display, queue); + + if (!context->wl) + { + DEBUG("No wl_drm global\n"); + goto error2; + } + + wl_drm_add_listener(context->wl, &drm_listener, context); + + /* Wait for DRM capabilities and device. */ + wl_display_roundtrip_queue(display, queue); + + if (!(context->capabilities & WL_DRM_CAPABILITY_PRIME)) + { + DEBUG("No PRIME support\n"); + goto error3; + } + + if (context->fd == -1) + { + DEBUG("No DRM device\n"); + goto error3; + } + + /* Wait for DRM authentication. */ + wl_display_roundtrip_queue(display, queue); + + if (!context->authenticated) + { + DEBUG("DRM authentication failed\n"); + goto error4; + } + + if (!(context->driver_context = wld_drm_create_context(context->fd))) + { + DEBUG("Couldn't initialize context for DRM device\n"); + goto error4; + } + + return &context->base; + + error4: + close(context->fd); + error3: + wl_drm_destroy(context->wl); + error2: + wl_registry_destroy(context->registry); + error1: + wl_array_release(&context->formats); + free(context); + error0: + return NULL; +} + +bool wayland_has_format(struct wld_context * base, uint32_t format) +{ + struct drm_context * context = drm_context(base); + uint32_t * supported_format; + + wl_array_for_each(supported_format, &context->formats) + { + if (*supported_format == format) + return true; + } + + return false; +} + +EXPORT +int wld_wayland_drm_get_fd(struct wld_context * base) +{ + struct drm_context * context = drm_context(base); + + return context->authenticated ? context->fd : -1; +} + +struct wld_renderer * context_create_renderer(struct wld_context * base) +{ + struct drm_context * context = drm_context(base); + + return wld_create_renderer(context->driver_context); +} + +struct buffer * context_create_buffer(struct wld_context * base, + uint32_t width, uint32_t height, + uint32_t format, uint32_t flags) +{ + struct drm_context * context = drm_context(base); + struct buffer * buffer; + union wld_object object; + struct wl_buffer * wl; + + if (!wayland_has_format(base, format)) + goto error0; + + buffer = context->driver_context->impl->create_buffer + (context->driver_context, width, height, format, flags); + + if (!buffer) + goto error0; + + if (!wld_export(&buffer->base, WLD_DRM_OBJECT_PRIME_FD, &object)) + goto error1; + + wl = wl_drm_create_prime_buffer(context->wl, object.i, width, height, + format, 0, buffer->base.pitch, 0, 0, 0, 0); + close(object.i); + + if (!wl) + goto error1; + + if (!wayland_buffer_add_exporter(buffer, wl)) + goto error2; + + return buffer; + + error2: + wl_buffer_destroy(wl); + error1: + wld_buffer_unreference(&buffer->base); + error0: + return NULL; +} + +struct buffer * context_import_buffer(struct wld_context * context, + uint32_t type, union wld_object object, + uint32_t width, uint32_t height, + uint32_t format, uint32_t pitch) +{ + return NULL; +} + +void context_destroy(struct wld_context * base) +{ + struct drm_context * context = drm_context(base); + + wld_destroy_context(context->driver_context); + close(context->fd); + wl_drm_destroy(context->wl); + wl_registry_destroy(context->registry); + wl_array_release(&context->formats); + wl_event_queue_destroy(context->base.queue); + free(context); +} + +void registry_global(void * data, struct wl_registry * registry, uint32_t name, + const char * interface, uint32_t version) +{ + struct drm_context * context = data; + + if (strcmp(interface, "wl_drm") == 0 && version >= 2) + context->wl = wl_registry_bind(registry, name, &wl_drm_interface, 2); +} + +void registry_global_remove(void * data, struct wl_registry * registry, + uint32_t name) +{ +} + +void drm_device(void * data, struct wl_drm * wl, const char * name) +{ + struct drm_context * context = data; + drm_magic_t magic; + + context->fd = open(name, O_RDWR); + + if (context->fd == -1) + { + DEBUG("Couldn't open DRM device '%s'\n", name); + return; + } + + drmGetMagic(context->fd, &magic); + wl_drm_authenticate(wl, magic); +} + +void drm_format(void * data, struct wl_drm * wl, uint32_t format) +{ + struct drm_context * context = data; + + *((uint32_t *) wl_array_add(&context->formats, sizeof format)) = format; +} + +void drm_authenticated(void * data, struct wl_drm * wl) +{ + struct drm_context * context = data; + + context->authenticated = true; +} + +void drm_capabilities(void * data, struct wl_drm * wl, uint32_t capabilities) +{ + struct drm_context * context = data; + + context->capabilities = capabilities; +} + |