diff options
author | Mateusz Krawczuk <m.krawczuk@samsung.com> | 2015-06-12 20:09:25 +0200 |
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committer | Sylwester Nawrocki <s.nawrocki@samsung.com> | 2015-07-09 15:55:04 +0200 |
commit | 2915635a0a4d03fe442399a679a42a92b33c8b99 (patch) | |
tree | de92f5b23564bc54fff8daf80b135735bdbca1c0 /v4l2-mfc-example/gem.c | |
parent | fb8b15e776fb02e8f99886092c869a603f1460cb (diff) |
v4l2-mfc-example: Add and refactor gem functions
Gem function related moved to gem.c and gem.h
It should make code more clean and obviously.
Signed-off-by: Mateusz Krawczuk <m.krawczuk@samsung.com>
Diffstat (limited to 'v4l2-mfc-example/gem.c')
-rw-r--r-- | v4l2-mfc-example/gem.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/v4l2-mfc-example/gem.c b/v4l2-mfc-example/gem.c new file mode 100644 index 0000000..a6d6516 --- /dev/null +++ b/v4l2-mfc-example/gem.c @@ -0,0 +1,85 @@ +#include <stdio.h> +#include <stdlib.h> +#include <stdint.h> +#include <linux/videodev2.h> +#include <fcntl.h> +#include <string.h> +#include <sys/ioctl.h> +#include <sys/mman.h> +#include <sys/types.h> +#include <unistd.h> + +#include "common.h" +#include "fimc.h" +#include <drm/exynos_drm.h> + +#include <errno.h> +#include <drm/drm_fourcc.h> +#include "gem.h" + +int exynos_gem_create(int fd, struct drm_exynos_gem_create *gem) +{ + int ret; + if (!gem) { + fprintf(stderr,"%s: %d - GEM object is null\n",__func__,__LINE__); + return -EINVAL; + } + + ret = ioctl(fd, DRM_IOCTL_EXYNOS_GEM_CREATE, gem) ; + if(ret){ + fprintf(stderr,"%s: %d - Failed to create GEM buffer\n %d %s",__func__,__LINE__,ret,strerror(errno)); + return -EINVAL; + + } + return 0; +} + +int exynos_gem_map_offset(int fd, struct drm_mode_map_dumb *map_off) +{ + + if (ioctl(fd, DRM_IOCTL_MODE_MAP_DUMB, map_off) < 0) { + fprintf(stderr,"%s: %d - Failed to get buffer offset\n",__func__,__LINE__); + return -EINVAL; + } + return 0; +} +int exynos_gem_mmap(int fd, struct exynos_gem_mmap_data *in_mmap) +{ + int ret; + void *map; + struct drm_mode_map_dumb arg; + + memset(&arg, 0, sizeof(arg)); + arg.handle = in_mmap->handle; + + ret = ioctl(fd, DRM_IOCTL_MODE_MAP_DUMB, &arg); + if (ret) { + fprintf(stderr, "%s: %d - failed to map dumb buffer: %s\n", + __func__, __LINE__, strerror(errno)); + return ret; + } + + in_mmap->offset = arg.offset; + + map = mmap(NULL, (size_t)in_mmap->size, PROT_READ | PROT_WRITE, + MAP_SHARED, fd, (off_t)arg.offset); + if (map == MAP_FAILED) { + fprintf(stderr, "%s: %d - failed to mmap buffer: %s\n", + __func__, __LINE__, strerror(errno)); + return -EFAULT; + } + + in_mmap->addr = map; + + return 0; +} + +int exynos_gem_close(int fd, struct drm_gem_close *gem_close) +{ + int ret = 0; + + ret = ioctl(fd, DRM_IOCTL_GEM_CLOSE, gem_close); + if (ret < 0) + fprintf(stderr, "%s: %d - failed to close: %s\n", __func__, __LINE__, strerror(-ret)); + return ret; +}
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