This is simple example how Exynos DRM IPP v2 API can be used from userspace.
The code allocates two GEM buffers, fills first with test pattern and then
performs 180 degree rotation of the image data.
Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
---
rotate.c | 235 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 235 insertions(+)
create mode 100644 rotate.c
diff --git a/rotate.c b/rotate.c
new file mode 100644
index 0000000..ab0c5d0
--- /dev/null
+++ b/rotate.c
@@ -0,0 +1,234 @@
+/*
+ * Copyright (C) 2017 Samsung Electronics Co.Ltd
+ * Author: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
+ *
+ * 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.
+ *
+ */
+
+#define _FILE_OFFSET_BITS 64
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/mman.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+
+#include <drm/drm.h>
+#include <drm/drm_fourcc.h>
+#include <drm/exynos_drm.h>
+
+#include <xf86drm.h>
+
+struct bo {
+ void *ptr;
+ size_t size;
+ size_t offset;
+ size_t pitch;
+ int width;
+ int height;
+ unsigned int handle;
+ unsigned int fourcc;
+};
+
+struct bo *bo_create(int fd, unsigned int width, unsigned int height,
+ unsigned int bpp, unsigned int fourcc)
+{
+ struct drm_exynos_gem_create create_arg = { };
+ struct drm_exynos_gem_map map_arg = { };
+ struct bo *bo;
+ int ret;
+
+ bo = calloc(1, sizeof(*bo));
+ if (bo == NULL) {
+ fprintf(stderr, "failed to allocate buffer object\n");
+ return NULL;
+ }
+
+ bo->size = width * height * bpp / 8;
+ bo->pitch = width * bpp / 8;
+ bo->width = width;
+ bo->height = height;
+
+ create_arg.size = bo->size;
+ create_arg.flags = EXYNOS_BO_NONCONTIG;
+
+ if (drmCommandWriteRead(fd, DRM_EXYNOS_GEM_CREATE, &create_arg,
+ sizeof(create_arg))) {
+ fprintf(stderr, "cannot create Exynos GEM object (%d): %m\n",
+ errno);
+ return NULL;
+ }
+
+ bo->handle = create_arg.handle;
+ bo->fourcc = fourcc;
+
+ map_arg.handle = bo->handle;
+
+ if (drmCommandWriteRead(fd, DRM_EXYNOS_GEM_MAP, &map_arg,
+ sizeof(map_arg))) {
+ fprintf(stderr, "cannot map Exynos GEM object (%d): %m\n",
+ errno);
+ return NULL;
+ }
+
+ bo->ptr = mmap(0, bo->size, PROT_READ | PROT_WRITE, MAP_SHARED, fd,
+ map_arg.offset);
+ if (bo->ptr == MAP_FAILED)
+ return NULL;
+
+ return bo;
+}
+
+void bo_destroy(int fd, struct bo *bo)
+{
+ struct drm_gem_close arg = { };
+ int ret;
+
+ if (bo->ptr)
+ munmap(bo->ptr, bo->size);
+
+ arg.handle = bo->handle;
+ ret = drmIoctl(fd, DRM_IOCTL_GEM_CLOSE, &arg);
+ if (ret)
+ fprintf(stderr, "failed to destroy dumb buffer (%d): %m\n",
+ errno);
+
+ free(bo);
+}
+
+struct bo *bo_create_xrgb(int fd, unsigned int width, unsigned int height)
+{
+ return bo_create(fd, width, height, 32, DRM_FORMAT_XRGB8888);
+}
+
+struct exynos_drm_ipp_std_task {
+ struct drm_exynos_ipp_task_buffer buf[2];
+ struct drm_exynos_ipp_task_rect rect[2];
+ struct drm_exynos_ipp_task_transform transform;
+} __packed;
+
+int process_fb(int fd, struct bo *src_bo, int sx, int sy, int sw, int sh,
+ struct bo *dst_bo, int dx, int dy, int dw, int dh, int rotation)
+{
+ struct exynos_drm_ipp_std_task task = { };
+ struct drm_exynos_ioctl_ipp_commit arg = { };
+ uint32_t id = 0; /* hardcoded first available IPP module */
+
+ task.buf[0].id = DRM_EXYNOS_IPP_TASK_BUFFER |
+ DRM_EXYNOS_IPP_TASK_TYPE_SOURCE;
+ task.buf[0].fourcc = src_bo->fourcc;
+ task.buf[0].width = src_bo->width;
+ task.buf[0].height = src_bo->height;
+ task.buf[0].pitch[0] = src_bo->pitch;
+ task.buf[0].gem_id[0] = src_bo->handle;
+
+ task.buf[1].id = DRM_EXYNOS_IPP_TASK_BUFFER |
+ DRM_EXYNOS_IPP_TASK_TYPE_DESTINATION;
+ task.buf[1].fourcc = dst_bo->fourcc;
+ task.buf[1].width = dst_bo->width;
+ task.buf[1].height = dst_bo->height;
+ task.buf[1].pitch[0] = dst_bo->pitch;
+ task.buf[1].gem_id[0] = dst_bo->handle;
+
+ task.rect[0].id = DRM_EXYNOS_IPP_TASK_RECTANGLE |
+ DRM_EXYNOS_IPP_TASK_TYPE_SOURCE;
+ task.rect[0].x = sx;
+ task.rect[0].y = sy;
+ task.rect[0].w = sw;
+ task.rect[0].h = sh;
+
+ task.rect[1].id = DRM_EXYNOS_IPP_TASK_RECTANGLE |
+ DRM_EXYNOS_IPP_TASK_TYPE_DESTINATION;
+ task.rect[1].x = dx;
+ task.rect[1].y = dy;
+ task.rect[1].w = dw;
+ task.rect[1].h = dh;
+
+ task.transform.id = DRM_EXYNOS_IPP_TASK_TRANSFORM;
+ task.transform.rotation = rotation;
+
+ arg.flags = 0;
+ arg.ipp_id = id;
+ arg.params_size = sizeof(task);
+ arg.params_ptr = (unsigned long)(&task);
+ arg.user_data = 0;
+
+ if (drmCommandWriteRead(fd, DRM_EXYNOS_IPP_COMMIT, &arg, sizeof(arg))) {
+ fprintf(stderr, "failed to commit Exynos IPP task (%d): %m\n",
+ errno);
+ return errno;
+ }
+
+ return 0;
+}
+
+int main(int argc, char *argv[])
+{
+ struct bo *buf1, *buf2;
+ int fd;
+ int err;
+ int width = 640;
+ int height = 480;
+ int val = 1, x, y;
+
+ fd = open("/dev/dri/card0", O_RDWR);
+
+ buf1 = bo_create_xrgb(fd, width, height);
+ buf2 = bo_create_xrgb(fd, width, height);
+
+ /* draw test pattern to buffer1 */
+ for (y = 0; y < height; y++) {
+ uint32_t *p = buf1->ptr + buf1->pitch * y;
+
+ for (x = 0; x < width; x++) {
+ if (x > y)
+ *p++ = (val++ & 0xffffff) + 0xff000000;
+ }
+ }
+
+ err = process_fb(fd, buf1, 0, 0, width, height, buf2, 0, 0, width,
+ height, DRM_MODE_ROTATE_180);
+ if (!err) {
+ printf("Buffer processed, checking processed buffer... ");
+
+ for (y = 0; y < height; y++) {
+ uint32_t *p1 = buf1->ptr + buf1->pitch * y;
+ uint32_t *p2 = buf2->ptr + buf1->pitch * (height - y - 1);
+
+ for (x = 0; x < width; x++)
+ if (*(p1 + x) != *(p2 + width - x - 1)) {
+ printf("failed at (%d,%d) %06x != %06x.\n",
+ x, y, *(p1 + x),
+ *(p2 + width - x - 1));
+ goto free;
+ }
+ }
+ printf("okay.\n");
+ }
+
+free:
+ bo_destroy(fd, buf1);
+ bo_destroy(fd, buf2);
+
+ return 0;
+}
--
1.9.1
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