mirror of
https://github.com/brl/mutter.git
synced 2024-12-26 04:42:14 +00:00
wayland/dma-buf: Add basic support for DMA buffer feedback
This includes sending the default tranche, but so far only sends the same for every surface feedback requested. Scanout tranche will be added later. Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1959>
This commit is contained in:
Jonas Ådahl
Marge Bot
parent
fc358e1306
commit
7acecb1c72
@ -42,7 +42,7 @@ gudev_req = '>= 232'
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# wayland version requirements
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wayland_server_req = '>= 1.18'
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wayland_protocols_req = '>= 1.23'
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wayland_protocols_req = '>= 1.24'
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# native backend version requirements
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libinput_req = '>= 1.19.0'
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@ -40,6 +40,9 @@
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#include "wayland/meta-wayland-dma-buf.h"
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#include <drm_fourcc.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include "backends/meta-backend-private.h"
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#include "backends/meta-egl-ext.h"
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@ -66,17 +69,41 @@
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#define META_WAYLAND_DMA_BUF_MAX_FDS 4
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/* Compatible with zwp_linux_dmabuf_feedback_v1.tranche_flags */
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typedef enum _MetaWaylandDmaBufTrancheFlags
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{
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META_WAYLAND_DMA_BUF_TRANCHE_FLAG_NONE = 0,
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META_WAYLAND_DMA_BUF_TRANCHE_FLAG_SCANOUT = 1,
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} MetaWaylandDmaBufTrancheFlags;
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typedef struct _MetaWaylandDmaBufFormat
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{
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uint32_t drm_format;
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uint64_t drm_modifier;
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uint16_t table_index;
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} MetaWaylandDmaBufFormat;
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typedef struct _MetaWaylandDmaBufTranche
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{
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dev_t target_device_id;
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GArray *formats;
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MetaWaylandDmaBufTrancheFlags flags;
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} MetaWaylandDmaBufTranche;
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typedef struct _MetaWaylandDmaBufFeedback
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{
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dev_t main_device_id;
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GList *tranches;
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} MetaWaylandDmaBufFeedback;
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struct _MetaWaylandDmaBufManager
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{
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MetaWaylandCompositor *compositor;
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dev_t main_device_id;
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GArray *formats;
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MetaAnonymousFile *format_table_file;
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MetaWaylandDmaBufFeedback *default_feedback;
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};
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struct _MetaWaylandDmaBufBuffer
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@ -95,6 +122,118 @@ struct _MetaWaylandDmaBufBuffer
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G_DEFINE_TYPE (MetaWaylandDmaBufBuffer, meta_wayland_dma_buf_buffer, G_TYPE_OBJECT);
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static MetaWaylandDmaBufTranche *
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meta_wayland_dma_buf_tranche_new (dev_t device_id,
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GArray *formats,
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MetaWaylandDmaBufTrancheFlags flags)
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{
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MetaWaylandDmaBufTranche *tranche;
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tranche = g_new0 (MetaWaylandDmaBufTranche, 1);
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tranche->target_device_id = device_id;
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tranche->formats = g_array_copy (formats);
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tranche->flags = flags;
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return tranche;
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}
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static void
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meta_wayland_dma_buf_tranche_free (MetaWaylandDmaBufTranche *tranche)
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{
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g_clear_pointer (&tranche->formats, g_array_unref);
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g_free (tranche);
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}
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static void
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meta_wayland_dma_buf_tranche_send (MetaWaylandDmaBufTranche *tranche,
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struct wl_resource *resource)
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{
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struct wl_array target_device_buf;
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dev_t *device_id_ptr;
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struct wl_array formats_array;
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unsigned int i;
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wl_array_init (&target_device_buf);
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device_id_ptr = wl_array_add (&target_device_buf, sizeof (*device_id_ptr));
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*device_id_ptr = tranche->target_device_id;
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zwp_linux_dmabuf_feedback_v1_send_tranche_target_device (resource,
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&target_device_buf);
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wl_array_release (&target_device_buf);
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zwp_linux_dmabuf_feedback_v1_send_tranche_flags (resource, tranche->flags);
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wl_array_init (&formats_array);
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for (i = 0; i < tranche->formats->len; i++)
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{
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MetaWaylandDmaBufFormat *format =
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&g_array_index (tranche->formats,
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MetaWaylandDmaBufFormat,
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i);
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uint16_t *format_index_ptr;
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format_index_ptr = wl_array_add (&formats_array,
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sizeof (*format_index_ptr));
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*format_index_ptr = format->table_index;
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}
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zwp_linux_dmabuf_feedback_v1_send_tranche_formats (resource, &formats_array);
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wl_array_release (&formats_array);
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zwp_linux_dmabuf_feedback_v1_send_tranche_done (resource);
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}
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static void
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meta_wayland_dma_buf_feedback_send (MetaWaylandDmaBufFeedback *feedback,
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MetaWaylandDmaBufManager *dma_buf_manager,
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struct wl_resource *resource)
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{
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size_t size;
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int fd;
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struct wl_array main_device_buf;
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dev_t *device_id_ptr;
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fd = meta_anonymous_file_open_fd (dma_buf_manager->format_table_file,
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META_ANONYMOUS_FILE_MAPMODE_PRIVATE);
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size = meta_anonymous_file_size (dma_buf_manager->format_table_file);
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zwp_linux_dmabuf_feedback_v1_send_format_table (resource, fd, size);
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meta_anonymous_file_close_fd (fd);
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wl_array_init (&main_device_buf);
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device_id_ptr = wl_array_add (&main_device_buf, sizeof (*device_id_ptr));
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*device_id_ptr = feedback->main_device_id;
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zwp_linux_dmabuf_feedback_v1_send_main_device (resource, &main_device_buf);
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g_list_foreach (feedback->tranches,
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(GFunc) meta_wayland_dma_buf_tranche_send,
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resource);
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zwp_linux_dmabuf_feedback_v1_send_done (resource);
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}
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static void
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meta_wayland_dma_buf_feedback_add_tranche (MetaWaylandDmaBufFeedback *feedback,
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MetaWaylandDmaBufTranche *tranche)
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{
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feedback->tranches = g_list_append (feedback->tranches, tranche);
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}
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static MetaWaylandDmaBufFeedback *
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meta_wayland_dma_buf_feedback_new (dev_t device_id)
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{
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MetaWaylandDmaBufFeedback *feedback;
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feedback = g_new0 (MetaWaylandDmaBufFeedback, 1);
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feedback->main_device_id = device_id;
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return feedback;
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}
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static void
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meta_wayland_dma_buf_feedback_free (MetaWaylandDmaBufFeedback *feedback)
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{
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g_clear_list (&feedback->tranches,
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(GDestroyNotify) meta_wayland_dma_buf_tranche_free);
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g_free (feedback);
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}
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static gboolean
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meta_wayland_dma_buf_realize_texture (MetaWaylandBuffer *buffer,
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GError **error)
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@ -630,10 +769,80 @@ dma_buf_handle_create_buffer_params (struct wl_client *client,
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buffer_params_destructor);
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}
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static void
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feedback_destroy (struct wl_client *client,
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struct wl_resource *resource)
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{
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wl_resource_destroy (resource);
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}
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static const struct zwp_linux_dmabuf_feedback_v1_interface feedback_implementation =
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{
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feedback_destroy,
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};
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static void
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feedback_destructor (struct wl_resource *resource)
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{
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}
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static void
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dma_buf_handle_get_default_feedback (struct wl_client *client,
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struct wl_resource *dma_buf_resource,
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uint32_t feedback_id)
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{
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MetaWaylandDmaBufManager *dma_buf_manager =
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wl_resource_get_user_data (dma_buf_resource);
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struct wl_resource *feedback_resource;
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feedback_resource =
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wl_resource_create (client,
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&zwp_linux_dmabuf_feedback_v1_interface,
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wl_resource_get_version (dma_buf_resource),
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feedback_id);
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wl_resource_set_implementation (feedback_resource,
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&feedback_implementation,
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NULL,
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feedback_destructor);
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meta_wayland_dma_buf_feedback_send (dma_buf_manager->default_feedback,
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dma_buf_manager,
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feedback_resource);
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}
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static void
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dma_buf_handle_get_surface_feedback (struct wl_client *client,
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struct wl_resource *dma_buf_resource,
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uint32_t feedback_id,
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struct wl_resource *surface_resource)
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{
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MetaWaylandDmaBufManager *dma_buf_manager =
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wl_resource_get_user_data (dma_buf_resource);
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struct wl_resource *feedback_resource;
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feedback_resource =
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wl_resource_create (client,
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&zwp_linux_dmabuf_feedback_v1_interface,
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wl_resource_get_version (dma_buf_resource),
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feedback_id);
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wl_resource_set_implementation (feedback_resource,
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&feedback_implementation,
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NULL,
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feedback_destructor);
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meta_wayland_dma_buf_feedback_send (dma_buf_manager->default_feedback,
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dma_buf_manager,
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feedback_resource);
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}
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static const struct zwp_linux_dmabuf_v1_interface dma_buf_implementation =
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{
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dma_buf_handle_destroy,
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dma_buf_handle_create_buffer_params,
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dma_buf_handle_get_default_feedback,
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dma_buf_handle_get_surface_feedback,
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};
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static gboolean
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@ -661,6 +870,9 @@ static void
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send_modifiers (struct wl_resource *resource,
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MetaWaylandDmaBufFormat *format)
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{
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g_assert (wl_resource_get_version (resource) <
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ZWP_LINUX_DMABUF_V1_GET_DEFAULT_FEEDBACK_SINCE_VERSION);
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zwp_linux_dmabuf_v1_send_format (resource, format->drm_format);
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if (wl_resource_get_version (resource) <
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@ -681,22 +893,25 @@ dma_buf_bind (struct wl_client *client,
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{
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MetaWaylandDmaBufManager *dma_buf_manager = user_data;
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struct wl_resource *resource;
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unsigned int i;
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resource = wl_resource_create (client, &zwp_linux_dmabuf_v1_interface,
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version, id);
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wl_resource_set_implementation (resource, &dma_buf_implementation,
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dma_buf_manager, NULL);
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for (i = 0; i < dma_buf_manager->formats->len; i++)
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if (version < ZWP_LINUX_DMABUF_V1_GET_DEFAULT_FEEDBACK_SINCE_VERSION)
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{
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MetaWaylandDmaBufFormat *format =
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&g_array_index (dma_buf_manager->formats,
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MetaWaylandDmaBufFormat,
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i);
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unsigned int i;
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send_modifiers (resource, format);
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for (i = 0; i < dma_buf_manager->formats->len; i++)
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{
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MetaWaylandDmaBufFormat *format =
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&g_array_index (dma_buf_manager->formats,
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MetaWaylandDmaBufFormat,
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i);
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send_modifiers (resource, format);
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}
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}
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}
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@ -741,6 +956,7 @@ add_format (MetaWaylandDmaBufManager *dma_buf_manager,
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format = (MetaWaylandDmaBufFormat) {
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.drm_format = drm_format,
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.drm_modifier = modifiers[i],
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.table_index = dma_buf_manager->formats->len,
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};
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g_array_append_val (dma_buf_manager->formats, format);
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}
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@ -751,10 +967,53 @@ add_fallback:
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format = (MetaWaylandDmaBufFormat) {
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.drm_format = drm_format,
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.drm_modifier = DRM_FORMAT_MOD_INVALID,
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.table_index = dma_buf_manager->formats->len,
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};
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g_array_append_val (dma_buf_manager->formats, format);
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}
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/*
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* This is the structure the data is expected to have in the shared memory file
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* shared with clients, according to the Wayland Linux DMA buffer protocol.
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* It's structured as 16 bytes (128 bits) per entry, where each entry consists
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* of the following:
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*
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* [ 32 bit format ][ 32 bit padding ][ 64 bit modifier ]
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*/
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typedef struct _MetaMetaWaylanDmaBdufFormatEntry
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{
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uint32_t drm_format;
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uint32_t unused_padding;
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uint64_t drm_modifier;
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} MetaWaylandDmaBufFormatEntry;
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G_STATIC_ASSERT (sizeof (MetaWaylandDmaBufFormatEntry) == 16);
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G_STATIC_ASSERT (offsetof (MetaWaylandDmaBufFormatEntry, drm_format) == 0);
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G_STATIC_ASSERT (offsetof (MetaWaylandDmaBufFormatEntry, drm_modifier) == 8);
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static void
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init_format_table (MetaWaylandDmaBufManager *dma_buf_manager)
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{
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g_autofree MetaWaylandDmaBufFormatEntry *format_table = NULL;
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size_t size;
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int i;
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size = sizeof (MetaWaylandDmaBufFormatEntry) * dma_buf_manager->formats->len;
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format_table = g_malloc0 (size);
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for (i = 0; i < dma_buf_manager->formats->len; i++)
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{
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MetaWaylandDmaBufFormat *format =
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&g_array_index (dma_buf_manager->formats, MetaWaylandDmaBufFormat, i);
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format_table[i].drm_format = format->drm_format;
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format_table[i].drm_modifier = format->drm_modifier;
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}
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dma_buf_manager->format_table_file =
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meta_anonymous_file_new (size, (uint8_t *) format_table);
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}
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static void
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init_formats (MetaWaylandDmaBufManager *dma_buf_manager,
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EGLDisplay egl_display)
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@ -775,6 +1034,25 @@ init_formats (MetaWaylandDmaBufManager *dma_buf_manager,
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add_format (dma_buf_manager, egl_display, DRM_FORMAT_XBGR16161616F);
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add_format (dma_buf_manager, egl_display, DRM_FORMAT_XRGB16161616F);
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add_format (dma_buf_manager, egl_display, DRM_FORMAT_ARGB16161616F);
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init_format_table (dma_buf_manager);
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}
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static void
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init_default_feedback (MetaWaylandDmaBufManager *dma_buf_manager)
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{
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MetaWaylandDmaBufTrancheFlags flags;
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MetaWaylandDmaBufTranche *tranche;
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dma_buf_manager->default_feedback =
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meta_wayland_dma_buf_feedback_new (dma_buf_manager->main_device_id);
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flags = META_WAYLAND_DMA_BUF_TRANCHE_FLAG_NONE;
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tranche = meta_wayland_dma_buf_tranche_new (dma_buf_manager->main_device_id,
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dma_buf_manager->formats,
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flags);
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meta_wayland_dma_buf_feedback_add_tranche (dma_buf_manager->default_feedback,
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tranche);
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}
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/**
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@ -794,8 +1072,14 @@ meta_wayland_dma_buf_manager_new (MetaWaylandCompositor *compositor,
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ClutterBackend *clutter_backend = meta_backend_get_clutter_backend (backend);
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CoglContext *cogl_context = clutter_backend_get_cogl_context (clutter_backend);
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EGLDisplay egl_display = cogl_egl_context_get_egl_display (cogl_context);
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dev_t device_id = 0;
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int protocol_version;
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EGLDeviceEXT egl_device;
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EGLAttrib attrib;
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g_autoptr (GError) local_error = NULL;
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g_autofree MetaWaylandDmaBufManager *dma_buf_manager = NULL;
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const char *device_path = NULL;
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struct stat device_stat;
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g_assert (backend && egl && clutter_backend && cogl_context && egl_display);
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@ -808,11 +1092,71 @@ meta_wayland_dma_buf_manager_new (MetaWaylandCompositor *compositor,
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return NULL;
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}
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if (!meta_egl_query_display_attrib (egl, egl_display,
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EGL_DEVICE_EXT, &attrib,
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&local_error))
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{
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g_warning ("Failed to query EGL device from primary EGL display: %s",
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local_error->message);
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protocol_version = 3;
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goto initialize;
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}
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egl_device = (EGLDeviceEXT) attrib;
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if (meta_egl_egl_device_has_extensions (egl, egl_device, NULL,
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"EGL_EXT_device_drm_render_node",
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NULL))
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{
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device_path = meta_egl_query_device_string (egl, egl_device,
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EGL_DRM_RENDER_NODE_FILE_EXT,
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&local_error);
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}
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else if (meta_egl_egl_device_has_extensions (egl, egl_device, NULL,
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"EGL_EXT_device_drm",
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NULL))
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{
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device_path = meta_egl_query_device_string (egl, egl_device,
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EGL_DRM_DEVICE_FILE_EXT,
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&local_error);
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}
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else
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{
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meta_topic (META_DEBUG_WAYLAND,
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"Only advertising zwp_linux_dmabuf_v1 interface version 3 "
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"support, missing 'EGL_EXT_device_drm' and "
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"'EGL_EXT_device_drm_render_node'");
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protocol_version = 3;
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goto initialize;
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}
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||||
|
||||
if (!device_path)
|
||||
{
|
||||
g_warning ("Failed to query EGL device path: %s",
|
||||
local_error->message);
|
||||
protocol_version = 3;
|
||||
goto initialize;
|
||||
}
|
||||
|
||||
if (stat (device_path, &device_stat) != 0)
|
||||
{
|
||||
g_warning ("Failed to fetch device file ID for '%s': %s",
|
||||
device_path,
|
||||
g_strerror (errno));
|
||||
protocol_version = 3;
|
||||
goto initialize;
|
||||
}
|
||||
|
||||
device_id = device_stat.st_rdev;
|
||||
|
||||
protocol_version = 4;
|
||||
|
||||
initialize:
|
||||
|
||||
dma_buf_manager = g_new0 (MetaWaylandDmaBufManager, 1);
|
||||
|
||||
if (!wl_global_create (compositor->wayland_display,
|
||||
&zwp_linux_dmabuf_v1_interface,
|
||||
META_ZWP_LINUX_DMABUF_V1_VERSION,
|
||||
protocol_version,
|
||||
dma_buf_manager,
|
||||
dma_buf_bind))
|
||||
{
|
||||
@ -822,8 +1166,10 @@ meta_wayland_dma_buf_manager_new (MetaWaylandCompositor *compositor,
|
||||
}
|
||||
|
||||
dma_buf_manager->compositor = compositor;
|
||||
dma_buf_manager->main_device_id = device_id;
|
||||
|
||||
init_formats (dma_buf_manager, egl_display);
|
||||
init_default_feedback (dma_buf_manager);
|
||||
|
||||
return g_steal_pointer (&dma_buf_manager);
|
||||
}
|
||||
@ -831,7 +1177,11 @@ meta_wayland_dma_buf_manager_new (MetaWaylandCompositor *compositor,
|
||||
void
|
||||
meta_wayland_dma_buf_manager_free (MetaWaylandDmaBufManager *dma_buf_manager)
|
||||
{
|
||||
g_clear_pointer (&dma_buf_manager->format_table_file,
|
||||
meta_anonymous_file_free);
|
||||
g_clear_pointer (&dma_buf_manager->formats, g_array_unref);
|
||||
g_clear_pointer (&dma_buf_manager->default_feedback,
|
||||
meta_wayland_dma_buf_feedback_free);
|
||||
g_free (dma_buf_manager);
|
||||
}
|
||||
|
||||
|
||||
@ -48,7 +48,6 @@
|
||||
#define META_ZWP_POINTER_GESTURES_V1_VERSION 3
|
||||
#define META_ZXDG_EXPORTER_V1_VERSION 1
|
||||
#define META_ZXDG_IMPORTER_V1_VERSION 1
|
||||
#define META_ZWP_LINUX_DMABUF_V1_VERSION 3
|
||||
#define META_ZWP_KEYBOARD_SHORTCUTS_INHIBIT_V1_VERSION 1
|
||||
#define META_ZXDG_OUTPUT_V1_VERSION 3
|
||||
#define META_ZWP_XWAYLAND_KEYBOARD_GRAB_V1_VERSION 1
|
||||
|
||||
Loading…
Reference in New Issue
Block a user