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https://github.com/tiagovignatti/intel-gpu-tools.git
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c03c6ceb29
With the header cleanup we can now give this header a suitable name, since it now really only contains register access and other I/O functions and assorted definitions. Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
112 lines
3.1 KiB
C
112 lines
3.1 KiB
C
/*
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* Copyright © 2013 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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*/
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/*
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* Read back all the KMS framebuffers attached to the CRTC and record as PNG.
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*/
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#define _GNU_SOURCE
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#include <stdint.h>
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#include <sys/types.h>
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#include <sys/mman.h>
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#include <errno.h>
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#include <xf86drmMode.h>
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#include <i915_drm.h>
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#include <cairo.h>
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#include "intel_io.h"
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#include "drmtest.h"
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int main(int argc, char **argv)
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{
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drmModeResPtr res;
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int fd, n;
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fd = drmOpen("i915", NULL);
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if (fd < 0)
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return ENOENT;
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res = drmModeGetResources(fd);
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if (res == NULL)
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return ENOMEM;
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for (n = 0; n < res->count_crtcs; n++) {
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struct drm_gem_open open_arg;
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struct drm_gem_flink flink;
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drmModeCrtcPtr crtc;
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drmModeFBPtr fb;
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crtc = drmModeGetCrtc(fd, res->crtcs[n]);
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if (crtc == NULL)
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continue;
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fb = drmModeGetFB(fd, crtc->buffer_id);
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drmModeFreeCrtc(crtc);
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if (fb == NULL)
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continue;
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flink.handle = fb->handle;
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if (drmIoctl(fd, DRM_IOCTL_GEM_FLINK, &flink)) {
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drmModeFreeFB(fb);
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continue;
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}
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open_arg.name = flink.name;
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if (drmIoctl(fd, DRM_IOCTL_GEM_OPEN, &open_arg) == 0) {
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struct drm_i915_gem_mmap_gtt mmap_arg;
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void *ptr;
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mmap_arg.handle = open_arg.handle;
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if (drmIoctl(fd, DRM_IOCTL_I915_GEM_MMAP_GTT, &mmap_arg) == 0 &&
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(ptr = mmap(0, open_arg.size, PROT_READ, MAP_SHARED, fd, mmap_arg.offset)) != (void *)-1) {
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cairo_surface_t *surface;
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cairo_format_t format;
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char name[80];
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snprintf(name, sizeof(name), "fb-%d.png", fb->fb_id);
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switch (fb->depth) {
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case 16: format = CAIRO_FORMAT_RGB16_565; break;
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case 24: format = CAIRO_FORMAT_RGB24; break;
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case 30: format = CAIRO_FORMAT_RGB30; break;
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case 32: format = CAIRO_FORMAT_ARGB32; break;
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default: format = CAIRO_FORMAT_INVALID; break;
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}
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surface = cairo_image_surface_create_for_data(ptr, format,
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fb->width, fb->height, fb->pitch);
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cairo_surface_write_to_png(surface, name);
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cairo_surface_destroy(surface);
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munmap(ptr, open_arg.size);
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}
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drmIoctl(fd, DRM_IOCTL_GEM_CLOSE, &open_arg.handle);
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}
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drmModeFreeFB(fb);
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}
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return 0;
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}
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