@@ -17,6 +17,7 @@ AC_CONFIG_FILES([Makefile
lib/libdvbv5/Makefile
lib/libv4l2rds/Makefile
lib/libv4l-mplane/Makefile
+ lib/libv4l-exynos4-camera/Makefile
utils/Makefile
utils/libv4l2util/Makefile
@@ -3,9 +3,10 @@ SUBDIRS = \
libv4l2 \
libv4l1 \
libv4l2rds \
- libv4l-mplane
+ libv4l-mplane \
+ libv4l-exynos4-camera
if LINUX_OS
SUBDIRS += \
libdvbv5
-endif
\ No newline at end of file
+endif
new file mode 100644
@@ -0,0 +1,8 @@
+if WITH_V4L_PLUGINS
+libv4l2plugin_LTLIBRARIES = libv4l-exynos4-camera.la
+endif
+
+libv4l_exynos4_camera_la_SOURCES = libv4l-exynos4-camera.c
+libv4l_exynos4_camera_la_CPPFLAGS = -fvisibility=hidden -std=gnu99
+libv4l_exynos4_camera_la_LDFLAGS = -avoid-version -module -shared -export-dynamic -lpthread
+libv4l_exynos4_camera_la_LIBADD = ../libv4l2/libv4l2-mdev.la
new file mode 100644
@@ -0,0 +1,569 @@
+/*
+ * Copyright (c) 2014 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * Author: Jacek Anaszewski <j.anaszewski@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 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
+ * Lesser General Public License for more details.
+ */
+
+#include <config.h>
+#include <errno.h>
+#include <libv4l2-mdev.h>
+#include <libv4l2-mdev-ioctl.h>
+#include <libv4l2-media-conf-parser.h>
+#include <linux/types.h>
+#include <stdlib.h>
+#include <string.h>
+#include "libv4l-plugin.h"
+
+/*
+ * struct exynos4_camera_plugin - libv4l exynos4 camera plugin
+ * @mdev: media device comprising the vid_fd related video device
+ */
+struct exynos4_camera_plugin {
+ struct media_device mdev;
+};
+
+#ifdef DEBUG
+#define V4L2_EXYNOS4_DBG(format, ARG...)\
+ printf("[%s:%d] [%s] " format " \n", __FILE__, __LINE__, __func__, ##ARG)
+#else
+#define V4L2_EXYNOS4_DBG(format, ARG...)
+#endif
+
+#define V4L2_EXYNOS4_ERR(format, ARG...)\
+ fprintf(stderr, "Libv4l Exynos4 camera plugin: "format "\n", ##ARG)
+
+#define V4L2_EXYNOS4_LOG(format, ARG...)\
+ fprintf(stdout, "Libv4l Exynos4 camera plugin: "format "\n", ##ARG)
+
+#if HAVE_VISIBILITY
+#define PLUGIN_PUBLIC __attribute__ ((visibility("default")))
+#else
+#define PLUGIN_PUBLIC
+#endif
+
+#define SIMPLE_CONVERT_IOCTL(fd, cmd, arg, __struc) ({ \
+ int __ret; \
+ struct __struc *req = arg; \
+ uint32_t type = req->type; \
+ req->type = convert_type(type); \
+ __ret = SYS_IOCTL(fd, cmd, arg); \
+ req->type = type; \
+ __ret; \
+ })
+
+#define EXYNOS4_FIMC_DRV "exynos4-fimc"
+#define EXYNOS4_FIMC_LITE_DRV "exynos-fimc-lit"
+#define EXYNOS4_FIMC_IS_ISP_DRV "exynos4-fimc-is"
+#define ENTITY_CAPTURE_SEGMENT "capture"
+#define EXYNOS4_CAPTURE_CONF "/var/lib/libv4l/exynos4_capture_conf"
+#define EXYNOS4_FIMC_IS_ISP "FIMC-IS-ISP"
+#define EXYNOS4_FIMC_PREFIX "FIMC."
+#define MAX_FMT_NEGO_NUM 50
+
+
+static int __capture_entity(char *name)
+{
+ int cap_segment_pos;
+
+ if (name == NULL)
+ return 0;
+
+ cap_segment_pos = strlen(name) - strlen(ENTITY_CAPTURE_SEGMENT);
+
+ if (strcmp(name + cap_segment_pos, ENTITY_CAPTURE_SEGMENT) == 0)
+ return 1;
+
+ return 0;
+}
+
+static int __adjust_format_to_fimc_is_isp(struct v4l2_mbus_framefmt *mbus_fmt)
+{
+ if (mbus_fmt == NULL)
+ return -EINVAL;
+
+ mbus_fmt->width += 16;
+ mbus_fmt->height += 12;
+
+ return 0;
+}
+
+static int negotiate_pipeline_fmt(struct media_entity *pipeline,
+ struct v4l2_format *dev_fmt)
+{
+ struct media_entity *vid_pipe = pipeline;
+ struct v4l2_subdev_format subdev_fmt = { 0 };
+ struct v4l2_mbus_framefmt mbus_fmt = { 0 }, common_fmt;
+ int repeat_negotiation, cnt_negotiation = 0, ret;
+
+ if (pipeline == NULL || dev_fmt == NULL)
+ return -EINVAL;
+
+ mbus_fmt.width = dev_fmt->fmt.pix_mp.width;
+ mbus_fmt.height = dev_fmt->fmt.pix_mp.height;
+ mbus_fmt.field = dev_fmt->fmt.pix_mp.field;
+ mbus_fmt.colorspace = dev_fmt->fmt.pix_mp.colorspace;
+
+ subdev_fmt.which = V4L2_SUBDEV_FORMAT_TRY;
+
+ if (mdev_has_pipeline_entity(vid_pipe, EXYNOS4_FIMC_IS_ISP)) {
+ ret = __adjust_format_to_fimc_is_isp(&mbus_fmt);
+ if (ret < 0)
+ return ret;
+ }
+
+ subdev_fmt.format = mbus_fmt;
+
+ for (;;) {
+ repeat_negotiation = 0;
+ vid_pipe = pipeline;
+
+ subdev_fmt.pad = vid_pipe->src_pad_id;
+
+ ret = SYS_IOCTL(vid_pipe->fd, VIDIOC_SUBDEV_S_FMT,
+ &subdev_fmt);
+ if (ret < 0)
+ return ret;
+
+ common_fmt = subdev_fmt.format;
+ vid_pipe->subdev_fmt = subdev_fmt;
+
+ vid_pipe = vid_pipe->next;
+
+ while (vid_pipe) {
+ subdev_fmt.pad = vid_pipe->sink_pad_id;
+
+ /* Set format on the entity src pad */
+ ret =
+ SYS_IOCTL(vid_pipe->fd, VIDIOC_SUBDEV_S_FMT,
+ &subdev_fmt);
+ if (ret < 0)
+ return ret;
+
+ if (!mdev_verify_format(&subdev_fmt.format, &common_fmt)) {
+ repeat_negotiation = 1;
+ break;
+ }
+
+ vid_pipe->subdev_fmt = subdev_fmt;
+
+ /*
+ * Do not check format on FIMC.[n] source pad
+ * and stop negotiation.
+ */
+ if (!strncmp(vid_pipe->name,
+ EXYNOS4_FIMC_PREFIX,
+ strlen(EXYNOS4_FIMC_PREFIX)))
+ break;
+
+ subdev_fmt.pad = vid_pipe->src_pad_id;
+
+ /* Get format on the entity sink pad */
+ ret =
+ SYS_IOCTL(vid_pipe->fd, VIDIOC_SUBDEV_G_FMT,
+ &subdev_fmt);
+ if (ret < 0)
+ return -EINVAL;
+
+ if (!strcmp(vid_pipe->name,
+ EXYNOS4_FIMC_IS_ISP)) {
+ common_fmt.code = subdev_fmt.format.code;
+ common_fmt.colorspace =
+ subdev_fmt.format.colorspace;
+ common_fmt.width -= 16;
+ common_fmt.height -= 12;
+ }
+ /* Bring back source pad id to the subdev format */
+ subdev_fmt.pad = vid_pipe->sink_pad_id;
+
+ if (!mdev_verify_format(&subdev_fmt.format, &common_fmt)) {
+ repeat_negotiation = 1;
+ break;
+ }
+
+ vid_pipe = vid_pipe->next;
+ if (vid_pipe->next == NULL)
+ break;
+ }
+
+ if (!repeat_negotiation) {
+ break;
+ } else if (++cnt_negotiation > MAX_FMT_NEGO_NUM) {
+ V4L2_EXYNOS4_DBG("Pipeline format negotiation failed!");
+ return -EINVAL;
+ }
+ }
+
+ dev_fmt->fmt.pix_mp.width = subdev_fmt.format.width;
+ dev_fmt->fmt.pix_mp.height = subdev_fmt.format.height;
+ dev_fmt->fmt.pix_mp.field = subdev_fmt.format.field;
+ dev_fmt->fmt.pix_mp.colorspace = subdev_fmt.format.colorspace;
+
+ return 0;
+}
+
+static int convert_type(int type)
+{
+ switch (type) {
+ case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+ return V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
+ default:
+ return type;
+ }
+}
+
+static int set_fmt_ioctl(struct media_device *mdev,
+ unsigned long int cmd,
+ struct v4l2_format *arg,
+ enum v4l2_subdev_format_whence set_mode)
+{
+ struct v4l2_format fmt = { 0 };
+ struct v4l2_format *org = arg;
+ int ret;
+
+ fmt.type = convert_type(arg->type);
+ if (fmt.type != arg->type) {
+ fmt.fmt.pix_mp.width = org->fmt.pix.width;
+ fmt.fmt.pix_mp.height = org->fmt.pix.height;
+ fmt.fmt.pix_mp.pixelformat = org->fmt.pix.pixelformat;
+ fmt.fmt.pix_mp.field = org->fmt.pix.field;
+ fmt.fmt.pix_mp.colorspace = org->fmt.pix.colorspace;
+ fmt.fmt.pix_mp.num_planes = 1;
+ fmt.fmt.pix_mp.flags = org->fmt.pix.flags;
+ fmt.fmt.pix_mp.plane_fmt[0].bytesperline = org->fmt.pix.bytesperline;
+ fmt.fmt.pix_mp.plane_fmt[0].sizeimage = org->fmt.pix.sizeimage;
+ } else {
+ fmt = *org;
+ }
+
+ ret = negotiate_pipeline_fmt(mdev->pipeline, &fmt);
+ if (ret < 0)
+ return ret;
+
+ if (set_mode == V4L2_SUBDEV_FORMAT_ACTIVE) {
+ ret = mdev_ioctl_set_fmt(mdev, &fmt);
+ if (ret < 0)
+ return ret;
+ }
+
+ if (fmt.type != arg->type) {
+ org->fmt.pix.width = fmt.fmt.pix_mp.width;
+ org->fmt.pix.height = fmt.fmt.pix_mp.height;
+ org->fmt.pix.pixelformat = fmt.fmt.pix_mp.pixelformat;
+ org->fmt.pix.field = fmt.fmt.pix_mp.field;
+ org->fmt.pix.colorspace = fmt.fmt.pix_mp.colorspace;
+ org->fmt.pix.bytesperline = fmt.fmt.pix_mp.plane_fmt[0].bytesperline;
+ org->fmt.pix.sizeimage = fmt.fmt.pix_mp.plane_fmt[0].sizeimage;
+ org->fmt.pix.flags = fmt.fmt.pix_mp.flags;
+ } else {
+ *org = fmt;
+ }
+
+ return 0;
+}
+
+static int get_fmt_ioctl(int fd,
+ unsigned long int cmd,
+ struct v4l2_format *arg)
+{
+ struct v4l2_format fmt = { 0 };
+ struct v4l2_format *org = arg;
+ int ret;
+
+ fmt.type = convert_type(arg->type);
+
+ if (fmt.type == arg->type)
+ return SYS_IOCTL(fd, cmd, arg);
+
+ ret = SYS_IOCTL(fd, cmd, &fmt);
+ if (ret < 0)
+ return ret;
+
+ memset(&org->fmt.pix, 0, sizeof(org->fmt.pix));
+ org->fmt.pix.width = fmt.fmt.pix_mp.width;
+ org->fmt.pix.height = fmt.fmt.pix_mp.height;
+ org->fmt.pix.pixelformat = fmt.fmt.pix_mp.pixelformat;
+ org->fmt.pix.field = fmt.fmt.pix_mp.field;
+ org->fmt.pix.colorspace = fmt.fmt.pix_mp.colorspace;
+ org->fmt.pix.bytesperline = fmt.fmt.pix_mp.plane_fmt[0].bytesperline;
+ org->fmt.pix.sizeimage = fmt.fmt.pix_mp.plane_fmt[0].sizeimage;
+ org->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
+ org->fmt.pix.flags = fmt.fmt.pix_mp.flags;
+
+ /*
+ * If the device doesn't support just one plane, there's
+ * nothing we can do, except return an error condition.
+ */
+ if (fmt.fmt.pix_mp.num_planes > 1) {
+ errno = EINVAL;
+ return -1;
+ }
+
+
+ return ret;
+}
+
+static int buf_ioctl(int fd,
+ unsigned long int cmd,
+ struct v4l2_buffer *arg)
+{
+ struct v4l2_buffer buf = *arg;
+ struct v4l2_plane plane = { 0 };
+ int ret;
+
+ buf.type = convert_type(arg->type);
+
+ if (buf.type == arg->type)
+ return SYS_IOCTL(fd, cmd, arg);
+
+ memcpy(&plane.m, &arg->m, sizeof(plane.m));
+ plane.length = arg->length;
+ plane.bytesused = arg->bytesused;
+
+ buf.m.planes = &plane;
+ buf.length = 1;
+
+ ret = SYS_IOCTL(fd, cmd, &buf);
+
+ arg->index = buf.index;
+ arg->memory = buf.memory;
+ arg->flags = buf.flags;
+ arg->field = buf.field;
+ arg->timestamp = buf.timestamp;
+ arg->timecode = buf.timecode;
+ arg->sequence = buf.sequence;
+
+ arg->length = plane.length;
+ arg->bytesused = plane.bytesused;
+ memcpy(&arg->m, &plane.m, sizeof(arg->m));
+
+ return ret;
+}
+
+static int querycap_ioctl(struct media_device *mdev,
+ struct v4l2_capability *arg)
+{
+ int ret;
+
+ ret = SYS_IOCTL(mdev->vid_fd, VIDIOC_QUERYCAP, arg);
+ if (ret < 0)
+ return ret;
+
+ arg->device_caps |= V4L2_CAP_VIDEO_CAPTURE;
+ arg->capabilities |= V4L2_CAP_VIDEO_CAPTURE;
+
+ return ret;
+}
+
+static void *plugin_init(int fd)
+{
+ struct v4l2_capability cap;
+ struct exynos4_camera_plugin plugin, *ret_plugin = NULL;
+ char *media_entity_name;
+ struct media_device *mdev = &plugin.mdev;
+ int ret;
+
+ memset(&plugin, 0, sizeof(plugin));
+
+ memset(&cap, 0, sizeof(cap));
+ ret = SYS_IOCTL(fd, VIDIOC_QUERYCAP, &cap);
+ if (ret < 0) {
+ V4L2_EXYNOS4_ERR("Failed to query video capabilities.");
+ return NULL;
+ }
+
+ if (strcmp((char *) cap.driver, EXYNOS4_FIMC_DRV) &&
+ strcmp((char *) cap.driver, EXYNOS4_FIMC_LITE_DRV) &&
+ strcmp((char *) cap.driver, EXYNOS4_FIMC_IS_ISP_DRV)) {
+ V4L2_EXYNOS4_ERR("Not an Exynos4 device.");
+ return NULL;
+ }
+
+ /* Get media node for the device */
+ ret = mdev_get_media_node(mdev, fd, &media_entity_name);
+ if (ret < 0)
+ return NULL;
+
+ /* Check if video entity is of capture type, not m2m */
+ if (!__capture_entity(media_entity_name)) {
+ V4L2_EXYNOS4_ERR("Device not of capture type.");
+ close(mdev->media_fd);
+ return NULL;
+ }
+
+ ret = libv4l2_media_conf_read(EXYNOS4_CAPTURE_CONF, &mdev->config);
+ if (ret < 0) {
+ V4L2_EXYNOS4_ERR("Error reading media device configuration.");
+ close(mdev->media_fd);
+ return NULL;
+ }
+
+ ret = mdev_setup_config_links(mdev, mdev->config.links);
+ /* Release links as they will not be used anymore */
+ libv4l2_media_conf_release_links(mdev->config.links);
+
+ if (ret < 0) {
+ V4L2_EXYNOS4_ERR("Video entities linking failed.");
+ close(mdev->media_fd);
+ return NULL;
+ }
+
+ /* refresh device topology data after linking */
+ mdev_release_entities(mdev);
+
+ ret = mdev_get_device_topology(mdev);
+
+ /* close media device fd as it won't be longer required */
+ close(mdev->media_fd);
+
+ if (ret < 0)
+ goto err_get_dev_topology;
+
+ /* discover a pipeline for the capture device */
+ ret = mdev_discover_pipeline_by_fd(mdev, fd);
+ if (ret < 0) {
+ V4L2_EXYNOS4_ERR("Error discovering video pipeline.");
+ goto err_discover_pipeline;
+ }
+
+ ret = mdev_open_pipeline_subdevs(mdev->pipeline);
+ if (ret < 0) {
+ V4L2_EXYNOS4_ERR("Error opening video pipeline.");
+ goto err_discover_pipeline;
+ }
+
+ if (mdev->config.controls) {
+ ret = mdev_validate_control_config(mdev, mdev->config.controls);
+ if (ret < 0) {
+ V4L2_EXYNOS4_ERR("Error validating control configuration.");
+ goto err_validate_controls;
+ }
+ }
+
+ /* Allocate and initialize private data */
+ ret_plugin = calloc(1, sizeof(*ret_plugin));
+ if (!ret_plugin)
+ goto err_validate_controls;
+
+ mdev->vid_fd = fd;
+
+ V4L2_EXYNOS4_LOG("Initialized exynos4-camera plugin.");
+
+ *ret_plugin = plugin;
+
+ return ret_plugin;
+
+err_validate_controls:
+ mdev_close_pipeline_subdevs(mdev->pipeline);
+err_discover_pipeline:
+ mdev_release_entities(mdev);
+err_get_dev_topology:
+ libv4l2_media_conf_release_controls(mdev->config.controls);
+ return NULL;
+}
+
+static void plugin_close(void *dev_ops_priv)
+{
+ struct exynos4_camera_plugin *plugin;
+ struct media_device *mdev;
+
+ if (dev_ops_priv == NULL)
+ return;
+
+ plugin = (struct exynos4_camera_plugin *) dev_ops_priv;
+ mdev = &plugin->mdev;
+
+ mdev_close_pipeline_subdevs(mdev->pipeline);
+ mdev_release_entities(mdev);
+ libv4l2_media_conf_release_controls(mdev->config.controls);
+
+ free(plugin);
+}
+
+static int plugin_ioctl(void *dev_ops_priv, int fd, unsigned long int cmd,
+ void *arg)
+{
+ struct exynos4_camera_plugin *plugin = dev_ops_priv;
+ struct media_device *mdev;
+
+ if (plugin == NULL || arg == NULL)
+ return -EINVAL;
+
+ mdev = &plugin->mdev;
+
+ if (mdev == NULL)
+ return -EINVAL;
+
+ switch (cmd) {
+ case VIDIOC_S_CTRL:
+ case VIDIOC_G_CTRL:
+ return mdev_ioctl_ctrl(mdev, cmd, arg);
+ case VIDIOC_S_EXT_CTRLS:
+ case VIDIOC_G_EXT_CTRLS:
+ case VIDIOC_TRY_EXT_CTRLS:
+ return mdev_ioctl_ext_ctrl(mdev, cmd, arg);
+ case VIDIOC_QUERYCTRL:
+ return mdev_ioctl_queryctrl(mdev, arg);
+ case VIDIOC_QUERY_EXT_CTRL:
+ return mdev_ioctl_query_ext_ctrl(mdev, arg);
+ case VIDIOC_QUERYMENU:
+ return mdev_ioctl_querymenu(mdev, arg);
+ case VIDIOC_TRY_FMT:
+ return set_fmt_ioctl(mdev, cmd, arg,
+ V4L2_SUBDEV_FORMAT_TRY);
+ case VIDIOC_S_FMT:
+ return set_fmt_ioctl(mdev, cmd, arg,
+ V4L2_SUBDEV_FORMAT_ACTIVE);
+ case VIDIOC_G_FMT:
+ return get_fmt_ioctl(mdev->vid_fd, cmd, arg);
+ case VIDIOC_QUERYCAP:
+ return querycap_ioctl(mdev, arg);
+ case VIDIOC_QBUF:
+ case VIDIOC_DQBUF:
+ case VIDIOC_QUERYBUF:
+ case VIDIOC_PREPARE_BUF:
+ return buf_ioctl(mdev->vid_fd, cmd, arg);
+ case VIDIOC_REQBUFS:
+ return SIMPLE_CONVERT_IOCTL(fd, cmd, arg,
+ v4l2_requestbuffers);
+ case VIDIOC_ENUM_FMT:
+ return SIMPLE_CONVERT_IOCTL(fd, cmd, arg, v4l2_fmtdesc);
+ case VIDIOC_CROPCAP:
+ return SIMPLE_CONVERT_IOCTL(fd, cmd, arg, v4l2_cropcap);
+ case VIDIOC_STREAMON:
+ case VIDIOC_STREAMOFF:
+ {
+ int *arg_type = (int *) arg;
+ int type;
+
+ type = convert_type(*arg_type);
+
+ if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
+ type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
+ V4L2_EXYNOS4_ERR("Invalid buffer type.");
+ return -EINVAL;
+ }
+
+ return SYS_IOCTL(fd, cmd, &type);
+ }
+
+ default:
+ return SYS_IOCTL(fd, cmd, arg);
+ }
+}
+
+PLUGIN_PUBLIC const struct libv4l_dev_ops libv4l2_plugin = {
+ .init = &plugin_init,
+ .close = &plugin_close,
+ .ioctl = &plugin_ioctl,
+};
@@ -2,6 +2,7 @@ if WITH_LIBV4L
lib_LTLIBRARIES = libv4l2.la
include_HEADERS = ../include/libv4l2.h ../include/libv4l-plugin.h
pkgconfig_DATA = libv4l2.pc
+noinst_LTLIBRARIES = libv4l2-mdev.la
LIBV4L2_VERSION = -version-info 0
if WITH_V4L_WRAPPERS
libv4l2priv_LTLIBRARIES = v4l2convert.la
@@ -12,7 +13,7 @@ install-exec-hook:
endif
else
-noinst_LTLIBRARIES = libv4l2.la
+noinst_LTLIBRARIES = libv4l2.la libv4l2-mdev.la
endif
libv4l2_la_SOURCES = libv4l2.c v4l2-plugin.c log.c libv4l2-priv.h
@@ -24,3 +25,5 @@ v4l2convert_la_SOURCES = v4l2convert.c
v4l2convert_la_LIBADD = libv4l2.la
v4l2convert_la_LDFLAGS = -avoid-version -module -shared -export-dynamic
v4l2convert_la_LIBTOOLFLAGS = --tag=disable-static
+
+libv4l2_mdev_la_SOURCES = libv4l2-mdev.c libv4l2-media-conf-parser.c ../include/libv4l2-mdev.h ../include/libv4l-media-conf-parser.h libv4l2-mdev-ioctl.c ../include/libv4l2-mdev-ioctl.h