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authorPaul Kocialkowski <contact@paulk.fr>2014-01-15 18:50:38 (GMT)
committerPaul Kocialkowski <contact@paulk.fr>2014-01-15 20:10:25 (GMT)
commit69c02aeec2adcecb87123745527d984586f4e0d0 (patch)
tree74163b67b84264fec02f7b3c2fe16ac8d6abbb25 /camera/smdk4x12_utils.c
parent8531ae5abb514cf52b93007d90ace7e3e50f2fd8 (diff)
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SMDK4x12 Camera
Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
Diffstat (limited to 'camera/smdk4x12_utils.c')
-rw-r--r--camera/smdk4x12_utils.c158
1 files changed, 158 insertions, 0 deletions
diff --git a/camera/smdk4x12_utils.c b/camera/smdk4x12_utils.c
new file mode 100644
index 0000000..7f8fc40
--- /dev/null
+++ b/camera/smdk4x12_utils.c
@@ -0,0 +1,158 @@
+/*
+ * Copyright (C) 2013 Paul Kocialkowski <contact@paulk.fr>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <malloc.h>
+#include <ctype.h>
+
+#define LOG_TAG "smdk4x12_utils"
+#include <utils/Log.h>
+
+#include "smdk4x12_camera.h"
+
+int list_head_insert(struct list_head *list, struct list_head *prev,
+ struct list_head *next)
+{
+ if (list == NULL)
+ return -EINVAL;
+
+ list->prev = prev;
+ list->next = next;
+
+ if(prev != NULL)
+ prev->next = list;
+ if(next != NULL)
+ next->prev = list;
+
+ return 0;
+}
+
+void list_head_remove(struct list_head *list)
+{
+ if(list == NULL)
+ return;
+
+ if(list->next != NULL)
+ list->next->prev = list->prev;
+ if(list->prev != NULL)
+ list->prev->next = list->next;
+}
+
+
+int smdk4x12_camera_buffer_length(int width, int height, int format)
+{
+ float bpp;
+ int buffer_length;
+
+ switch (format) {
+ case V4L2_PIX_FMT_RGB32:
+ bpp = 4.0f;
+ buffer_length = (int) ((float) width * (float) height * bpp);
+ break;
+ case V4L2_PIX_FMT_RGB565:
+ case V4L2_PIX_FMT_YUYV:
+ case V4L2_PIX_FMT_UYVY:
+ case V4L2_PIX_FMT_VYUY:
+ case V4L2_PIX_FMT_YVYU:
+ case V4L2_PIX_FMT_YUV422P:
+ case V4L2_PIX_FMT_NV16:
+ case V4L2_PIX_FMT_NV61:
+ bpp = 2.0f;
+ buffer_length = (int) ((float) width * (float) height * bpp);
+ break;
+ case V4L2_PIX_FMT_NV12:
+ case V4L2_PIX_FMT_NV12T:
+ case V4L2_PIX_FMT_YUV420:
+ case V4L2_PIX_FMT_YVU420:
+ bpp = 1.5f;
+ buffer_length = SMDK4x12_CAMERA_ALIGN(width * height);
+ buffer_length += SMDK4x12_CAMERA_ALIGN(width * height / 2);
+ break;
+ case V4L2_PIX_FMT_NV21:
+ bpp = 1.5f;
+ buffer_length = (int) ((float) width * (float) height * bpp);
+ break;
+ case V4L2_PIX_FMT_JPEG:
+ case V4L2_PIX_FMT_INTERLEAVED:
+ default:
+ buffer_length = -1;
+ bpp = 0;
+ break;
+ }
+
+ return buffer_length;
+}
+
+void smdk4x12_camera_yuv_planes(int width, int height, int format, int address, int *address_y, int *address_cb, int *address_cr)
+{
+ switch (format) {
+ case V4L2_PIX_FMT_RGB32:
+ case V4L2_PIX_FMT_RGB565:
+ case V4L2_PIX_FMT_YUYV:
+ case V4L2_PIX_FMT_UYVY:
+ case V4L2_PIX_FMT_VYUY:
+ case V4L2_PIX_FMT_YVYU:
+ if (address_y != NULL)
+ *address_y = address;
+ break;
+ case V4L2_PIX_FMT_YUV420:
+ if (address_y != NULL)
+ *address_y = address;
+
+ address += SMDK4x12_CAMERA_ALIGN(width * height);
+
+ if (address_cb != NULL)
+ *address_cb = address;
+
+ address += SMDK4x12_CAMERA_ALIGN(width * height / 4);
+
+ if (address_cr != NULL)
+ *address_cr = address;
+ break;
+ case V4L2_PIX_FMT_NV12:
+ case V4L2_PIX_FMT_NV12T:
+ if (address_y != NULL)
+ *address_y = address;
+
+ address += SMDK4x12_CAMERA_ALIGN(width * height);
+
+ if (address_cb != NULL)
+ *address_cb = address;
+
+ if (address_cr != NULL)
+ *address_cr = address;
+ break;
+ case V4L2_PIX_FMT_NV21:
+ case V4L2_PIX_FMT_NV16:
+ case V4L2_PIX_FMT_NV61:
+ default:
+ if (address_y != NULL)
+ *address_y = address;
+
+ address += width * height;
+
+ if (address_cb != NULL)
+ *address_cb = address;
+
+ if (address_cr != NULL)
+ *address_cr = address;
+ break;
+ }
+}