kms: get plane every frame, might fix not updating issue and issue where plane gets invalid

TODO

@@ -39,7 +39,6 @@ Fix constant framerate not working properly on amd/intel because capture framera
 
 JPEG color range on amd seems to produce too bright video with h264 but not hevc, why?
 
-Support recording screen/monitor on amd/intel.
 Better configure vaapi. The file size is too large.
 Better colors for vaapi. It looks a bit off when recording vscode for example.
 

kms/client/kms_client.c

@@ -88,7 +88,6 @@ static int recv_msg_from_server(int server_fd, gsr_kms_response *response) {
 
 int gsr_kms_client_init(gsr_kms_client *self, const char *card_path) {
     self->kms_server_pid = -1;
-    self->card_path = NULL;
     self->socket_fd = -1;
     self->client_fd = -1;
     self->socket_path[0] = '\0';
@@ -144,12 +143,6 @@ int gsr_kms_client_init(gsr_kms_client *self, const char *card_path) {
         }
     }
 
-    self->card_path = strdup(card_path);
-    if(!self->card_path) {
-        fprintf(stderr, "gsr error: gsr_kms_client_init: failed to duplicate card_path\n");
-        goto err;
-    }
-
     self->socket_fd = socket(AF_UNIX, SOCK_STREAM, 0);
     if(self->socket_fd == -1) {
         fprintf(stderr, "gsr error: gsr_kms_client_init: socket failed, error: %s\n", strerror(errno));
@@ -174,13 +167,13 @@ int gsr_kms_client_init(gsr_kms_client *self, const char *card_path) {
         goto err;
     } else if(pid == 0) { /* child */
         if(inside_flatpak) {
-            const char *args[] = { "flatpak-spawn", "--host", "pkexec", "flatpak", "run", "--command=gsr-kms-server", "com.dec05eba.gpu_screen_recorder", self->socket_path, NULL };
+            const char *args[] = { "flatpak-spawn", "--host", "pkexec", "flatpak", "run", "--command=gsr-kms-server", "com.dec05eba.gpu_screen_recorder", self->socket_path, card_path, NULL };
             execvp(args[0], (char *const*)args);
         } else if(has_perm) {
-            const char *args[] = { server_filepath, self->socket_path, NULL };
+            const char *args[] = { server_filepath, self->socket_path, card_path, NULL };
             execvp(args[0], (char *const*)args);
         } else {
-            const char *args[] = { "pkexec", server_filepath, self->socket_path, NULL };
+            const char *args[] = { "pkexec", server_filepath, self->socket_path, card_path, NULL };
             execvp(args[0], (char *const*)args);
         }
         fprintf(stderr, "gsr error: gsr_kms_client_init: execvp failed, error: %s\n", strerror(errno));
@@ -189,7 +182,7 @@ int gsr_kms_client_init(gsr_kms_client *self, const char *card_path) {
         self->kms_server_pid = pid;
     }
 
-    fprintf(stderr, "gsr info: gsr_kms_client_init: waiting for client to connect\n");
+    fprintf(stderr, "gsr info: gsr_kms_client_init: waiting for server to connect\n");
     for(;;) {
         struct timeval tv;
         fd_set rfds;
@@ -217,7 +210,7 @@ int gsr_kms_client_init(gsr_kms_client *self, const char *card_path) {
             }
         }
     }
-    fprintf(stderr, "gsr info: gsr_kms_client_init: client connected\n");
+    fprintf(stderr, "gsr info: gsr_kms_client_init: server connected\n");
 
     return 0;
 
@@ -227,11 +220,6 @@ int gsr_kms_client_init(gsr_kms_client *self, const char *card_path) {
 }
 
 void gsr_kms_client_deinit(gsr_kms_client *self) {
-    if(self->card_path) {
-        free(self->card_path);
-        self->card_path = NULL;
-    }
-
     if(self->client_fd != -1) {
         close(self->client_fd);
         self->client_fd = -1;
@@ -261,7 +249,6 @@ int gsr_kms_client_get_kms(gsr_kms_client *self, gsr_kms_response *response) {
 
     gsr_kms_request request;
     request.type = KMS_REQUEST_TYPE_GET_KMS;
-    strcpy(request.data.card_path, self->card_path);
     if(send_msg_to_server(self->client_fd, &request) == -1) {
         fprintf(stderr, "gsr error: gsr_kms_client_get_kms: failed to send request message to server\n");
         return -1;

kms/client/kms_client.h

@@ -9,7 +9,6 @@ typedef struct {
     int socket_fd;
     int client_fd;
     char socket_path[255];
-    char *card_path;
 } gsr_kms_client;
 
 /* |card_path| should be a path to card, for example /dev/dri/card0 */

kms/kms_shared.h

@@ -10,18 +10,12 @@ typedef enum {
 typedef enum {
     KMS_RESULT_OK,
     KMS_RESULT_INVALID_REQUEST,
-    KMS_RESULT_FAILED_TO_OPEN_CARD,
+    KMS_RESULT_FAILED_TO_GET_PLANE,
-    KMS_RESULT_INSUFFICIENT_PERMISSIONS,
-    KMS_RESULT_FAILED_TO_GET_KMS,
-    KMS_RESULT_NO_KMS_AVAILABLE,
     KMS_RESULT_FAILED_TO_SEND
 } gsr_kms_result;
 
 typedef struct {
     int type; /* gsr_kms_request_type */
-    union {
-        char card_path[255];
-    } data;
 } gsr_kms_request;
 
 typedef struct {

kms/server/kms_server.c

@@ -16,6 +16,11 @@
 
 #define DRM_CLIENT_CAP_UNIVERSAL_PLANES 2
 
+typedef struct {
+    int drmfd;
+    uint32_t plane_id;
+} gsr_drm;
+
 static int max_int(int a, int b) {
     return a > b ? a : b;
 }
@@ -57,99 +62,135 @@ static int send_msg_to_client(int client_fd, gsr_kms_response *response, int *fd
     return sendmsg(client_fd, &response_message, 0);
 }
 
-static int get_kms(const char *card_path, gsr_kms_response *response) {
+static int kms_get_plane_id(gsr_drm *drm) {
+    drmModePlaneResPtr planes = NULL;
+    drmModePlanePtr plane = NULL;
+    drmModeFB2Ptr drmfb = NULL;
+    int result = -1;
+
+    if(drmSetClientCap(drm->drmfd, DRM_CLIENT_CAP_UNIVERSAL_PLANES, 1) != 0) {
+        fprintf(stderr, "kms server error: drmSetClientCap failed, error: %s\n", strerror(errno));
+        goto error;
+    }
+
+    planes = drmModeGetPlaneResources(drm->drmfd);
+    if(!planes) {
+        fprintf(stderr, "kms server error: failed to access planes, error: %s\n", strerror(errno));
+        goto error;
+    }
+
+    for(uint32_t i = 0; i < planes->count_planes; ++i) {
+        plane = drmModeGetPlane(drm->drmfd, planes->planes[i]);
+        if(!plane) {
+            fprintf(stderr, "kms server warning: failed to get drmModePlanePtr for plane %#x: %s (%d)\n", planes->planes[i], strerror(errno), errno);
+            continue;
+        }
+
+        if(!plane->fb_id) {
+            drmModeFreePlane(plane);
+            continue;
+        }
+
+        break;
+    }
+
+    if(!plane) {
+        fprintf(stderr, "kms server error: failed to find a usable plane\n");
+        goto error;
+    }
+
+    // TODO: Fallback to getfb(1)?
+    drmfb = drmModeGetFB2(drm->drmfd, plane->fb_id);
+    if(!drmfb) {
+        fprintf(stderr, "kms server error: drmModeGetFB2 failed on plane fb id %d, error: %s\n", plane->fb_id, strerror(errno));
+        goto error;
+    }
+
+    if(!drmfb->handles[0]) {
+        fprintf(stderr, "kms server error: drmfb handle is NULL\n");
+        goto error;
+    }
+
+    drm->plane_id = plane->plane_id;
+    result = 0;
+
+    error:
+    if(drmfb)
+        drmModeFreeFB2(drmfb);
+    if(plane)
+        drmModeFreePlane(plane);
+    if(planes)
+        drmModeFreePlaneResources(planes);
+
+    return result;
+}
+
+static int kms_get_fb(gsr_drm *drm, gsr_kms_response *response) {
+    drmModePlanePtr plane = NULL;
+    drmModeFB2 *drmfb = NULL;
+    int result = -1;
+
     response->result = KMS_RESULT_OK;
     response->data.fd.fd = 0;
     response->data.fd.width = 0;
     response->data.fd.height = 0;
 
-    const int drmfd = open(card_path, O_RDONLY);
+    plane = drmModeGetPlane(drm->drmfd, drm->plane_id);
-    if (drmfd < 0) {
+    if(!plane) {
-        response->result = KMS_RESULT_FAILED_TO_OPEN_CARD;
+        response->result = KMS_RESULT_FAILED_TO_GET_PLANE;
-        snprintf(response->data.err_msg, sizeof(response->data.err_msg), "failed to open %s, error: %s", card_path, strerror(errno));
+        snprintf(response->data.err_msg, sizeof(response->data.err_msg), "failed to get drm plane with id %u, error: %s\n", drm->plane_id, strerror(errno));
-        return -1;
+        fprintf(stderr, "kms server error: %s\n", response->data.err_msg);
+        goto error;
     }
 
-    if (0 != drmSetClientCap(drmfd, DRM_CLIENT_CAP_UNIVERSAL_PLANES, 1)) {
+    drmfb = drmModeGetFB2(drm->drmfd, plane->fb_id);
-        response->result = KMS_RESULT_INSUFFICIENT_PERMISSIONS;
+    if(!drmfb) {
-        snprintf(response->data.err_msg, sizeof(response->data.err_msg), "drmSetClientCap failed, error: %s", strerror(errno));
+        response->result = KMS_RESULT_FAILED_TO_GET_PLANE;
-        close(drmfd);
+        snprintf(response->data.err_msg, sizeof(response->data.err_msg), "drmModeGetFB2 failed, error: %s", strerror(errno));
-        return -1;
+        fprintf(stderr, "kms server error: %s\n", response->data.err_msg);
+        goto error;
     }
 
-    drmModePlaneResPtr planes = drmModeGetPlaneResources(drmfd);
+    if(!drmfb->handles[0]) {
-    if (!planes) {
+        response->result = KMS_RESULT_FAILED_TO_GET_PLANE;
-        response->result = KMS_RESULT_FAILED_TO_GET_KMS;
+        snprintf(response->data.err_msg, sizeof(response->data.err_msg), "drmfb handle is NULL");
-        snprintf(response->data.err_msg, sizeof(response->data.err_msg), "failed to access planes, error: %s", strerror(errno));
+        fprintf(stderr, "kms server error: %s\n", response->data.err_msg);
-        close(drmfd);
+        goto error;
-        return -1;
     }
 
-    fprintf(stderr, "DRM planes %d:\n", planes->count_planes);
+    // TODO: Check if dimensions have changed by comparing width and height to previous time this was called.
-    for (uint32_t i = 0; i < planes->count_planes; ++i) {
+    // TODO: Support other plane formats than rgb (with multiple planes, such as direct YUV420 on wayland).
-        drmModePlanePtr plane = drmModeGetPlane(drmfd, planes->planes[i]);
-        if (!plane) {
-            fprintf(stderr, "Cannot get drmModePlanePtr for plane %#x: %s (%d)\n", planes->planes[i], strerror(errno), errno);
-            continue;
-        }
 
-        fprintf(stderr, "\t%d: fb_id=%#x\n", i, plane->fb_id);
+    int fb_fd = -1;
+    const int ret = drmPrimeHandleToFD(drm->drmfd, drmfb->handles[0], O_RDONLY, &fb_fd);
+    if(ret != 0 || fb_fd == -1) {
+        response->result = KMS_RESULT_FAILED_TO_GET_PLANE;
+        snprintf(response->data.err_msg, sizeof(response->data.err_msg), "failed to get fd from drm handle, error: %s", strerror(errno));
+        fprintf(stderr, "kms server error: %s\n", response->data.err_msg);
+        goto error;
+    }
 
-        if (!plane->fb_id)
+    response->data.fd.fd = fb_fd;
-            goto plane_continue;
+    response->data.fd.width = drmfb->width;
+    response->data.fd.height = drmfb->height;
+    response->data.fd.pitch = drmfb->pitches[0];
+    response->data.fd.offset = drmfb->offsets[0];
+    response->data.fd.pixel_format = drmfb->pixel_format;
+    response->data.fd.modifier = drmfb->modifier;
+    result = 0;
 
-        drmModeFB2Ptr drmfb = drmModeGetFB2(drmfd, plane->fb_id);
+    error:
-        if (!drmfb) {
+    if(drmfb)
-            fprintf(stderr, "Cannot get drmModeFBPtr for fb %#x: %s (%d)\n", plane->fb_id, strerror(errno), errno);
+        drmModeFreeFB2(drmfb);
-        } else {
+    if(plane)
-            if (!drmfb->handles[0]) {
-                fprintf(stderr, "\t\tFB handle for fb %#x is NULL\n", plane->fb_id);
-                fprintf(stderr, "\t\tPossible reason: not permitted to get FB handles. Do `sudo setcap cap_sys_admin+ep`\n");
-            } else {
-                int fb_fd = -1;
-                const int ret = drmPrimeHandleToFD(drmfd, drmfb->handles[0], 0, &fb_fd);
-                if (ret != 0 || fb_fd == -1) {
-                    fprintf(stderr, "Cannot get fd for fb %#x handle %#x: %s (%d)\n", plane->fb_id, drmfb->handles[0], strerror(errno), errno);
-                } else if(drmfb->width * drmfb->height > response->data.fd.width * response->data.fd.height) {
-                    if(response->data.fd.fd != 0) {
-                        close(response->data.fd.fd);
-                        response->data.fd.fd = 0;
-                    }
-
-                    response->data.fd.fd = fb_fd;
-                    response->data.fd.width = drmfb->width;
-                    response->data.fd.height = drmfb->height;
-                    response->data.fd.pitch = drmfb->pitches[0];
-                    response->data.fd.offset = drmfb->offsets[0];
-                    response->data.fd.pixel_format = drmfb->pixel_format;
-                    response->data.fd.modifier = drmfb->modifier;
-                    fprintf(stderr, "kms width: %u, height: %u, pixel format: %u, modifier: %lu\n", response->data.fd.width, response->data.fd.height, response->data.fd.pixel_format, response->data.fd.modifier);
-                } else {
-                    close(fb_fd);
-                }
-            }
-            drmModeFreeFB2(drmfb);
-        }
-
-    plane_continue:
         drmModeFreePlane(plane);
-    }
 
-    drmModeFreePlaneResources(planes);
+    return result;
-    close(drmfd);
-
-    if(response->data.fd.fd == 0) {
-        response->result = KMS_RESULT_NO_KMS_AVAILABLE;
-        snprintf(response->data.err_msg, sizeof(response->data.err_msg), "no kms found");
-        return -1;
-    }
-
-    return 0;
 }
 
 int main(int argc, char **argv) {
-    if(argc != 2) {
+    if(argc != 3) {
-        fprintf(stderr, "usage: kms_server <domain_socket_path>\n");
+        fprintf(stderr, "usage: kms_server <domain_socket_path> <card_path>\n");
         return 1;
     }
 
@@ -160,7 +201,22 @@ int main(int argc, char **argv) {
         return 2;
     }
 
-    fprintf(stderr, "kms server info: connecting to the server\n");
+    const char *card_path = argv[2];
+
+    gsr_drm drm;
+    drm.plane_id = 0;
+    drm.drmfd = open(card_path, O_RDONLY);
+    if(drm.drmfd < 0) {
+        fprintf(stderr, "kms server error: failed to open %s, error: %s", card_path, strerror(errno));
+        return 2;
+    }
+
+    if(kms_get_plane_id(&drm) != 0) {
+        close(drm.drmfd);
+        return 2;
+    }
+
+    fprintf(stderr, "kms server info: connecting to the client\n");
     for(;;) {
         struct sockaddr_un remote_addr = {0};
         remote_addr.sun_family = AF_UNIX;
@@ -171,11 +227,13 @@ int main(int argc, char **argv) {
                 continue; // Host not ready yet? TODO: sleep
             if(errno == EISCONN) // TODO?
                 break;
+
             fprintf(stderr, "kms server error: connect failed, error: %s (%d)\n", strerror(errno), errno);
+            close(drm.drmfd);
             return 2;
         }
     }
-    fprintf(stderr, "kms server info: connected to the server\n");
+    fprintf(stderr, "kms server info: connected to the client\n");
 
     int res = 0;
     for(;;) {
@@ -202,33 +260,27 @@ int main(int argc, char **argv) {
             }
             continue;
         }
-        request.data.card_path[254] = '\0';
 
         switch(request.type) {
             case KMS_REQUEST_TYPE_GET_KMS: {
                 gsr_kms_response response;
-                int kms_fd = 0;
-                if (get_kms(request.data.card_path, &response) == 0) {
-                    kms_fd = response.data.fd.fd;
-                }
                 
-                if(send_msg_to_client(socket_fd, &response, &kms_fd, kms_fd == 0 ? 0 : 1) == -1) {
+                if(kms_get_fb(&drm, &response) == 0) {
-                    fprintf(stderr, "kms server error: failed to respond to client KMS_REQUEST_TYPE_GET_KMS request\n");
+                    if(send_msg_to_client(socket_fd, &response, &response.data.fd.fd, 1) == -1)
-                    if(kms_fd != 0)
+                        fprintf(stderr, "kms server error: failed to respond to client KMS_REQUEST_TYPE_GET_KMS request\n");
-                        close(kms_fd);
+                    close(response.data.fd.fd);
-                    break;
+                } else {
+                    if(send_msg_to_client(socket_fd, &response, NULL, 0) == -1)
+                        fprintf(stderr, "kms server error: failed to respond to client KMS_REQUEST_TYPE_GET_KMS request\n");
                 }
 
-                if(kms_fd != 0)
-                    close(kms_fd);
-
                 break;
             }
             default: {
                 gsr_kms_response response;
                 response.result = KMS_RESULT_INVALID_REQUEST;
                 snprintf(response.data.err_msg, sizeof(response.data.err_msg), "invalid request type %d, expected %d (%s)", request.type, KMS_REQUEST_TYPE_GET_KMS, "KMS_REQUEST_TYPE_GET_KMS");
-                fprintf(stderr, "%s\n", response.data.err_msg);
+                fprintf(stderr, "kms server error: %s\n", response.data.err_msg);
                 if(send_msg_to_client(socket_fd, &response, NULL, 0) == -1) {
                     fprintf(stderr, "kms server error: failed to respond to client request\n");
                     break;
@@ -239,6 +291,7 @@ int main(int argc, char **argv) {
     }
 
     done:
+    close(drm.drmfd);
     close(socket_fd);
     return res;
 }

scripts/toggle-recording-selected.sh

@@ -5,5 +5,5 @@ window=$(xdotool selectwindow)
 active_sink="$(pactl get-default-sink).monitor"
 mkdir -p "$HOME/Videos"
 video="$HOME/Videos/$(date +"Video_%Y-%m-%d_%H-%M-%S.mp4")"
-notify-send -u low 'GPU Screen Recorder' "Started recording video to $video"
+notify-send -t 5000 -u low 'GPU Screen Recorder' "Started recording video to $video"
 gpu-screen-recorder -w "$window" -c mp4 -f 60 -a "$active_sink" -o "$video"

src/capture/kms_vaapi.c

@@ -102,19 +102,6 @@ static int gsr_capture_kms_vaapi_start(gsr_capture *cap, AVCodecContext *video_c
         return -1;
     }
 
-    gsr_kms_response kms_response;
-    if(gsr_kms_client_get_kms(&cap_kms->kms_client, &kms_response) != 0) {
-        fprintf(stderr, "gsr error: gsr_capture_kms_vaapi_start: failed to get kms, error: %d (%s)\n", kms_response.result, kms_response.data.err_msg);
-        gsr_capture_kms_vaapi_stop(cap, video_codec_context);
-        return -1;
-    }
-
-    cap_kms->dmabuf_fd = kms_response.data.fd.fd;
-    cap_kms->pitch = kms_response.data.fd.pitch;
-    cap_kms->offset = kms_response.data.fd.offset;
-    cap_kms->fourcc = kms_response.data.fd.pixel_format;
-    cap_kms->modifiers = kms_response.data.fd.modifier;
-
     // TODO: Update on monitor reconfiguration, make sure to update on window focus change (maybe for kms update each second?), needs to work on focus change to the witcher 3 on full window, fullscreen firefox, etc
     gsr_monitor monitor;
     if(strcmp(cap_kms->params.display_to_capture, "screen") == 0) {
@@ -132,8 +119,6 @@ static int gsr_capture_kms_vaapi_start(gsr_capture *cap, AVCodecContext *video_c
     cap_kms->capture_pos = monitor.pos;
     cap_kms->capture_size = monitor.size;
 
-    cap_kms->kms_size.x = kms_response.data.fd.width;
-    cap_kms->kms_size.y = kms_response.data.fd.height;
 
     if(!gsr_egl_load(&cap_kms->egl, cap_kms->params.dpy)) {
         fprintf(stderr, "gsr error: gsr_capture_kms_vaapi_start: failed to load opengl\n");
@@ -163,154 +148,39 @@ static void gsr_capture_kms_vaapi_tick(gsr_capture *cap, AVCodecContext *video_c
 
     //const double window_resize_timeout = 1.0; // 1 second
     if(!cap_kms->created_hw_frame) {
-        if(cap_kms->buffer_id) {
+        cap_kms->created_hw_frame = true;
-            vaDestroyBuffer(cap_kms->va_dpy, cap_kms->buffer_id);
+        av_frame_free(frame);
-            cap_kms->buffer_id = 0;
+        *frame = av_frame_alloc();
+        if(!frame) {
+            fprintf(stderr, "gsr error: gsr_capture_kms_vaapi_tick: failed to allocate frame\n");
+            cap_kms->should_stop = true;
+            cap_kms->stop_is_error = true;
+            return;
         }
+        (*frame)->format = video_codec_context->pix_fmt;
+        (*frame)->width = video_codec_context->width;
+        (*frame)->height = video_codec_context->height;
+        (*frame)->color_range = video_codec_context->color_range;
+        (*frame)->color_primaries = video_codec_context->color_primaries;
+        (*frame)->color_trc = video_codec_context->color_trc;
+        (*frame)->colorspace = video_codec_context->colorspace;
+        (*frame)->chroma_location = video_codec_context->chroma_sample_location;
 
-        if(cap_kms->context_id) {
+        int res = av_hwframe_get_buffer(video_codec_context->hw_frames_ctx, *frame, 0);
-            vaDestroyContext(cap_kms->va_dpy, cap_kms->context_id);
+        if(res < 0) {
-            cap_kms->context_id = 0;
+            fprintf(stderr, "gsr error: gsr_capture_kms_vaapi_tick: av_hwframe_get_buffer failed: %d\n", res);
-        }
-
-        if(cap_kms->config_id) {
-            vaDestroyConfig(cap_kms->va_dpy, cap_kms->config_id);
-            cap_kms->config_id = 0;
-        }
-
-        if(cap_kms->input_surface) {
-            vaDestroySurfaces(cap_kms->va_dpy, &cap_kms->input_surface, 1);
-            cap_kms->input_surface = 0;
-        }
-
-        if(!cap_kms->created_hw_frame) {
-            cap_kms->created_hw_frame = true;
-            av_frame_free(frame);
-            *frame = av_frame_alloc();
-            if(!frame) {
-                fprintf(stderr, "gsr error: gsr_capture_kms_vaapi_tick: failed to allocate frame\n");
-                cap_kms->should_stop = true;
-                cap_kms->stop_is_error = true;
-                return;
-            }
-            (*frame)->format = video_codec_context->pix_fmt;
-            (*frame)->width = video_codec_context->width;
-            (*frame)->height = video_codec_context->height;
-            (*frame)->color_range = video_codec_context->color_range;
-            (*frame)->color_primaries = video_codec_context->color_primaries;
-            (*frame)->color_trc = video_codec_context->color_trc;
-            (*frame)->colorspace = video_codec_context->colorspace;
-            (*frame)->chroma_location = video_codec_context->chroma_sample_location;
-
-            int res = av_hwframe_get_buffer(video_codec_context->hw_frames_ctx, *frame, 0);
-            if(res < 0) {
-                fprintf(stderr, "gsr error: gsr_capture_kms_vaapi_tick: av_hwframe_get_buffer failed: %d\n", res);
-                cap_kms->should_stop = true;
-                cap_kms->stop_is_error = true;
-                return;
-            }
-        }
-
-        uintptr_t dmabuf = cap_kms->dmabuf_fd;
-
-        VASurfaceAttribExternalBuffers buf = {0};
-        buf.pixel_format = VA_FOURCC_BGRX; // VA_FOURCC_XRGB
-        buf.width = cap_kms->kms_size.x;
-        buf.height = cap_kms->kms_size.y;
-        buf.data_size = cap_kms->kms_size.y * cap_kms->pitch;
-        buf.num_planes = 1;
-        buf.pitches[0] = cap_kms->pitch;
-        buf.offsets[0] = cap_kms->offset;
-        buf.buffers = &dmabuf;
-        buf.num_buffers = 1;
-        buf.flags = 0;
-        buf.private_data = 0;
-
-        VADRMFormatModifierList modifier_list = {0};
-        modifier_list.modifiers = &cap_kms->modifiers;
-        modifier_list.num_modifiers = 1;
-
-        #define VA_SURFACE_ATTRIB_MEM_TYPE_DRM_PRIME        0x20000000
-
-        VASurfaceAttrib attribs[3] = {0};
-        attribs[0].type = VASurfaceAttribMemoryType;
-        attribs[0].flags = VA_SURFACE_ATTRIB_SETTABLE;
-        attribs[0].value.type = VAGenericValueTypeInteger;
-        attribs[0].value.value.i = VA_SURFACE_ATTRIB_MEM_TYPE_DRM_PRIME; // TODO: prime1 instead?
-        attribs[1].type = VASurfaceAttribExternalBufferDescriptor;
-        attribs[1].flags = VA_SURFACE_ATTRIB_SETTABLE;
-        attribs[1].value.type = VAGenericValueTypePointer;
-        attribs[1].value.value.p = &buf;
-
-        int num_attribs = 2;
-        if(cap_kms->modifiers != DRM_FORMAT_MOD_INVALID) {
-            attribs[2].type = VASurfaceAttribDRMFormatModifiers;
-            attribs[2].flags = VA_SURFACE_ATTRIB_SETTABLE;
-            attribs[2].value.type = VAGenericValueTypePointer;
-            attribs[2].value.value.p = &modifier_list;
-            ++num_attribs;
-        }
-        
-        VAStatus va_status = vaCreateSurfaces(cap_kms->va_dpy, VA_RT_FORMAT_RGB32, cap_kms->kms_size.x, cap_kms->kms_size.y, &cap_kms->input_surface, 1, attribs, num_attribs);
-        if(va_status != VA_STATUS_SUCCESS) {
-            fprintf(stderr, "gsr error: gsr_capture_kms_vaapi_tick: vaCreateSurfaces failed: %d\n", va_status);
             cap_kms->should_stop = true;
             cap_kms->stop_is_error = true;
             return;
         }
 
-        //vaBeginPicture(cap_kms->va_dpy, )
+        VAStatus va_status = vaCreateConfig(cap_kms->va_dpy, VAProfileNone, VAEntrypointVideoProc, NULL, 0, &cap_kms->config_id);
-
-        va_status = vaCreateConfig(cap_kms->va_dpy, VAProfileNone, VAEntrypointVideoProc, NULL, 0, &cap_kms->config_id);
         if(va_status != VA_STATUS_SUCCESS) {
             fprintf(stderr, "gsr error: gsr_capture_kms_vaapi_tick: vaCreateConfig failed: %d\n", va_status);
             cap_kms->should_stop = true;
             cap_kms->stop_is_error = true;
             return;
         }
-
-        VASurfaceID target_surface_id = (uintptr_t)(*frame)->data[3];
-        va_status = vaCreateContext(cap_kms->va_dpy, cap_kms->config_id, cap_kms->kms_size.x, cap_kms->kms_size.y, VA_PROGRESSIVE, &target_surface_id, 1, &cap_kms->context_id);
-        if(va_status != VA_STATUS_SUCCESS) {
-            fprintf(stderr, "gsr error: gsr_capture_kms_vaapi_tick: vaCreateContext failed: %d\n", va_status);
-            cap_kms->should_stop = true;
-            cap_kms->stop_is_error = true;
-            return;
-        }
-
-        cap_kms->input_region = (VARectangle) {
-            .x = cap_kms->capture_pos.x,
-            .y = cap_kms->capture_pos.y,
-            .width = cap_kms->capture_size.x,
-            .height = cap_kms->capture_size.y
-        };
-
-        // Copying a surface to another surface will automatically perform the color conversion. Thanks vaapi!
-        VAProcPipelineParameterBuffer params = {0};
-        params.surface = cap_kms->input_surface;
-        if(cap_kms->screen_capture)
-            params.surface_region = NULL;
-        else
-            params.surface_region = &cap_kms->input_region;
-        params.output_region = NULL;
-        params.output_background_color = 0;
-        params.filter_flags = VA_FRAME_PICTURE;
-        // TODO: Colors
-        params.input_color_properties.color_range = (*frame)->color_range == AVCOL_RANGE_JPEG ? VA_SOURCE_RANGE_FULL : VA_SOURCE_RANGE_REDUCED;
-        params.output_color_properties.color_range = (*frame)->color_range == AVCOL_RANGE_JPEG ? VA_SOURCE_RANGE_FULL : VA_SOURCE_RANGE_REDUCED;
-
-        va_status = vaCreateBuffer(cap_kms->va_dpy, cap_kms->context_id, VAProcPipelineParameterBufferType, sizeof(params), 1, &params, &cap_kms->buffer_id);
-        if(va_status != VA_STATUS_SUCCESS) {
-            fprintf(stderr, "gsr error: gsr_capture_kms_vaapi_tick: vaCreateBuffer failed: %d\n", va_status);
-            cap_kms->should_stop = true;
-            cap_kms->stop_is_error = true;
-            return;
-        }
-
-        // Clear texture with black background because the source texture (window_texture_get_opengl_texture_id(&cap_kms->window_texture))
-        // might be smaller than cap_kms->target_texture_id
-        // TODO:
-        //cap_kms->egl.glClearTexImage(cap_kms->target_texture_id, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
     }
 }
 
@@ -330,9 +200,133 @@ static bool gsr_capture_kms_vaapi_should_stop(gsr_capture *cap, bool *err) {
 static int gsr_capture_kms_vaapi_capture(gsr_capture *cap, AVFrame *frame) {
     gsr_capture_kms_vaapi *cap_kms = cap->priv;
 
-    VASurfaceID target_surface_id = (uintptr_t)frame->data[3];
+    if(cap_kms->dmabuf_fd > 0) {
+        close(cap_kms->dmabuf_fd);
+        cap_kms->dmabuf_fd = 0;
+    }
 
-    VAStatus va_status = vaBeginPicture(cap_kms->va_dpy, cap_kms->context_id, target_surface_id);
+    gsr_kms_response kms_response;
+    if(gsr_kms_client_get_kms(&cap_kms->kms_client, &kms_response) != 0) {
+        fprintf(stderr, "gsr error: gsr_capture_kms_vaapi_start: failed to get kms, error: %d (%s)\n", kms_response.result, kms_response.data.err_msg);
+        return -1;
+    }
+
+    cap_kms->dmabuf_fd = kms_response.data.fd.fd;
+    cap_kms->pitch = kms_response.data.fd.pitch;
+    cap_kms->offset = kms_response.data.fd.offset;
+    cap_kms->fourcc = kms_response.data.fd.pixel_format;
+    cap_kms->modifiers = kms_response.data.fd.modifier;
+    cap_kms->kms_size.x = kms_response.data.fd.width;
+    cap_kms->kms_size.y = kms_response.data.fd.height;
+
+    if(cap_kms->buffer_id) {
+        vaDestroyBuffer(cap_kms->va_dpy, cap_kms->buffer_id);
+        cap_kms->buffer_id = 0;
+    }
+
+    if(cap_kms->context_id) {
+        vaDestroyContext(cap_kms->va_dpy, cap_kms->context_id);
+        cap_kms->context_id = 0;
+    }
+
+    if(cap_kms->input_surface) {
+        vaDestroySurfaces(cap_kms->va_dpy, &cap_kms->input_surface, 1);
+        cap_kms->input_surface = 0;
+    }
+
+    VASurfaceID target_surface_id = (uintptr_t)frame->data[3];
+    uintptr_t dmabuf = cap_kms->dmabuf_fd;
+
+    VASurfaceAttribExternalBuffers buf = {0};
+    buf.pixel_format = VA_FOURCC_BGRX; // VA_FOURCC_XRGB
+    buf.width = cap_kms->kms_size.x;
+    buf.height = cap_kms->kms_size.y;
+    buf.data_size = cap_kms->kms_size.y * cap_kms->pitch;
+    buf.num_planes = 1;
+    buf.pitches[0] = cap_kms->pitch;
+    buf.offsets[0] = cap_kms->offset;
+    buf.buffers = &dmabuf;
+    buf.num_buffers = 1;
+    buf.flags = 0;
+    buf.private_data = 0;
+
+    VADRMFormatModifierList modifier_list = {0};
+    modifier_list.modifiers = &cap_kms->modifiers;
+    modifier_list.num_modifiers = 1;
+
+    #define VA_SURFACE_ATTRIB_MEM_TYPE_DRM_PRIME        0x20000000
+
+    VASurfaceAttrib attribs[3] = {0};
+    attribs[0].type = VASurfaceAttribMemoryType;
+    attribs[0].flags = VA_SURFACE_ATTRIB_SETTABLE;
+    attribs[0].value.type = VAGenericValueTypeInteger;
+    attribs[0].value.value.i = VA_SURFACE_ATTRIB_MEM_TYPE_DRM_PRIME; // TODO: prime1 instead?
+    attribs[1].type = VASurfaceAttribExternalBufferDescriptor;
+    attribs[1].flags = VA_SURFACE_ATTRIB_SETTABLE;
+    attribs[1].value.type = VAGenericValueTypePointer;
+    attribs[1].value.value.p = &buf;
+
+    int num_attribs = 2;
+    if(cap_kms->modifiers != DRM_FORMAT_MOD_INVALID) {
+        attribs[2].type = VASurfaceAttribDRMFormatModifiers;
+        attribs[2].flags = VA_SURFACE_ATTRIB_SETTABLE;
+        attribs[2].value.type = VAGenericValueTypePointer;
+        attribs[2].value.value.p = &modifier_list;
+        ++num_attribs;
+    }
+    
+    // TODO: Do we really need to create a new surface every frame?
+    VAStatus va_status = vaCreateSurfaces(cap_kms->va_dpy, VA_RT_FORMAT_RGB32, cap_kms->kms_size.x, cap_kms->kms_size.y, &cap_kms->input_surface, 1, attribs, num_attribs);
+    if(va_status != VA_STATUS_SUCCESS) {
+        fprintf(stderr, "gsr error: gsr_capture_kms_vaapi_tick: vaCreateSurfaces failed: %d\n", va_status);
+        cap_kms->should_stop = true;
+        cap_kms->stop_is_error = true;
+        return -1;
+    }
+
+    va_status = vaCreateContext(cap_kms->va_dpy, cap_kms->config_id, cap_kms->kms_size.x, cap_kms->kms_size.y, VA_PROGRESSIVE, &target_surface_id, 1, &cap_kms->context_id);
+    if(va_status != VA_STATUS_SUCCESS) {
+        fprintf(stderr, "gsr error: gsr_capture_kms_vaapi_tick: vaCreateContext failed: %d\n", va_status);
+        cap_kms->should_stop = true;
+        cap_kms->stop_is_error = true;
+        return -1;
+    }
+
+    cap_kms->input_region = (VARectangle) {
+        .x = cap_kms->capture_pos.x,
+        .y = cap_kms->capture_pos.y,
+        .width = cap_kms->capture_size.x,
+        .height = cap_kms->capture_size.y
+    };
+
+    // Copying a surface to another surface will automatically perform the color conversion. Thanks vaapi!
+    VAProcPipelineParameterBuffer params = {0};
+    params.surface = cap_kms->input_surface;
+    if(cap_kms->screen_capture)
+        params.surface_region = NULL;
+    else
+        params.surface_region = &cap_kms->input_region;
+    params.output_region = NULL;
+    params.output_background_color = 0;
+    params.filter_flags = VA_FRAME_PICTURE;
+    // TODO: Colors
+    params.input_color_properties.color_range = frame->color_range == AVCOL_RANGE_JPEG ? VA_SOURCE_RANGE_FULL : VA_SOURCE_RANGE_REDUCED;
+    params.output_color_properties.color_range = frame->color_range == AVCOL_RANGE_JPEG ? VA_SOURCE_RANGE_FULL : VA_SOURCE_RANGE_REDUCED;
+
+    va_status = vaCreateBuffer(cap_kms->va_dpy, cap_kms->context_id, VAProcPipelineParameterBufferType, sizeof(params), 1, &params, &cap_kms->buffer_id);
+    if(va_status != VA_STATUS_SUCCESS) {
+        fprintf(stderr, "gsr error: gsr_capture_kms_vaapi_tick: vaCreateBuffer failed: %d\n", va_status);
+        cap_kms->should_stop = true;
+        cap_kms->stop_is_error = true;
+        return -1;
+    }
+
+    // Clear texture with black background because the source texture (window_texture_get_opengl_texture_id(&cap_kms->window_texture))
+    // might be smaller than cap_kms->target_texture_id
+    // TODO:
+    //cap_kms->egl.glClearTexImage(cap_kms->target_texture_id, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
+
+    va_status = vaBeginPicture(cap_kms->va_dpy, cap_kms->context_id, target_surface_id);
     if(va_status != VA_STATUS_SUCCESS) {
         static bool error_printed = false;
         if(!error_printed) {