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authorChris Wilson <chris@chris-wilson.co.uk>2013-08-15 10:55:22 +0100
committerChris Wilson <chris@chris-wilson.co.uk>2013-08-15 10:58:31 +0100
commit176011eea776566ca73f98c48b0476db7f8b1e4d (patch)
tree6b7691992a42350503b4727e6f377bb95422f6aa
parentf2198896087b160bdc13eb8cf9b2dd54e79d52da (diff)
Add intel_framebuffer_dump
A simple utility to capture the currently active framebuffers and record them as a png.
-rw-r--r--tools/Makefile.am1
-rw-r--r--tools/intel_framebuffer_dump.c111
2 files changed, 112 insertions, 0 deletions
diff --git a/tools/Makefile.am b/tools/Makefile.am
index 2519169a..47bd5b3a 100644
--- a/tools/Makefile.am
+++ b/tools/Makefile.am
@@ -9,6 +9,7 @@ bin_PROGRAMS = \
intel_bios_dumper \
intel_bios_reader \
intel_error_decode \
+ intel_framebuffer_dump \
intel_gpu_top \
intel_gpu_time \
intel_gtt \
diff --git a/tools/intel_framebuffer_dump.c b/tools/intel_framebuffer_dump.c
new file mode 100644
index 00000000..a254324c
--- /dev/null
+++ b/tools/intel_framebuffer_dump.c
@@ -0,0 +1,111 @@
+/*
+ * Copyright © 2013 Intel Corporation
+ *
+ * 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 (including the next
+ * paragraph) 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.
+ *
+ */
+
+/*
+ * Read back all the KMS framebuffers attached to the CRTC and record as PNG.
+ */
+
+#define _GNU_SOURCE
+#include <stdint.h>
+#include <sys/types.h>
+#include <sys/mman.h>
+#include <errno.h>
+#include <xf86drmMode.h>
+#include <i915_drm.h>
+#include <cairo.h>
+
+#include "intel_gpu_tools.h"
+#include "drmtest.h"
+
+int main(int argc, char **argv)
+{
+ drmModeResPtr res;
+ int fd, n;
+
+ fd = drmOpen("i915", NULL);
+ if (fd < 0)
+ return ENOENT;
+
+ res = drmModeGetResources(fd);
+ if (res == NULL)
+ return ENOMEM;
+
+ for (n = 0; n < res->count_crtcs; n++) {
+ struct drm_gem_open open_arg;
+ struct drm_gem_flink flink;
+ drmModeCrtcPtr crtc;
+ drmModeFBPtr fb;
+
+ crtc = drmModeGetCrtc(fd, res->crtcs[n]);
+ if (crtc == NULL)
+ continue;
+
+ fb = drmModeGetFB(fd, crtc->buffer_id);
+ drmModeFreeCrtc(crtc);
+ if (fb == NULL)
+ continue;
+
+ flink.handle = fb->handle;
+ if (drmIoctl(fd, DRM_IOCTL_GEM_FLINK, &flink)) {
+ drmModeFreeFB(fb);
+ continue;
+ }
+
+ open_arg.name = flink.name;
+ if (drmIoctl(fd, DRM_IOCTL_GEM_OPEN, &open_arg) == 0) {
+ struct drm_i915_gem_mmap_gtt mmap_arg;
+ void *ptr;
+
+ mmap_arg.handle = open_arg.handle;
+ if (drmIoctl(fd, DRM_IOCTL_I915_GEM_MMAP_GTT, &mmap_arg) == 0 &&
+ (ptr = mmap(0, open_arg.size, PROT_READ, MAP_SHARED, fd, mmap_arg.offset)) != (void *)-1) {
+ cairo_surface_t *surface;
+ cairo_format_t format;
+ char name[80];
+
+ snprintf(name, sizeof(name), "fb-%d.png", fb->fb_id);
+
+ switch (fb->depth) {
+ case 16: format = CAIRO_FORMAT_RGB16_565; break;
+ case 24: format = CAIRO_FORMAT_RGB24; break;
+ case 30: format = CAIRO_FORMAT_RGB30; break;
+ case 32: format = CAIRO_FORMAT_ARGB32; break;
+ default: format = CAIRO_FORMAT_INVALID; break;
+ }
+
+ surface = cairo_image_surface_create_for_data(ptr, format,
+ fb->width, fb->height, fb->pitch);
+ cairo_surface_write_to_png(surface, name);
+ cairo_surface_destroy(surface);
+
+ munmap(ptr, open_arg.size);
+ }
+ drmIoctl(fd, DRM_IOCTL_GEM_CLOSE, &open_arg.handle);
+ }
+
+ drmModeFreeFB(fb);
+ }
+
+ return 0;
+}