gstreamer: amlv4l2dec [1/1]
PD#SWPL-79817
Problem:
new git for amlv4l2dec
Solution:
(detail info)
Verify:
(detail info)
Change-Id: I9b84c97bc6fd27ea269bf4c2cc7bcf51b6be8502
Signed-off-by: xuesong.jiang <xuesong.jiang@amlogic.com>
diff --git a/src/aml-v4l2-utils.c b/src/aml-v4l2-utils.c
new file mode 100644
index 0000000..b8f8ae4
--- /dev/null
+++ b/src/aml-v4l2-utils.c
@@ -0,0 +1,201 @@
+/* GStreamer
+ * Copyright (C) 2022 <xuesong.jiang@amlogic.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Suite 500,
+ * Boston, MA 02110-1335, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "aml-v4l2-utils.h"
+
+/**************************/
+/* Common device iterator */
+/**************************/
+
+#ifdef HAVE_GUDEV
+#include <gudev/gudev.h>
+
+struct _GstAmlV4l2GUdevIterator
+{
+ GstAmlV4l2Iterator parent;
+ GList *devices;
+ GUdevDevice *device;
+ GUdevClient *client;
+};
+
+GstAmlV4l2Iterator *
+gst_aml_v4l2_iterator_new(void)
+{
+ static const gchar *subsystems[] = {"video4linux", NULL};
+ struct _GstAmlV4l2GUdevIterator *it;
+
+ it = g_slice_new0(struct _GstAmlV4l2GUdevIterator);
+
+ it->client = g_udev_client_new(subsystems);
+ it->devices = g_udev_client_query_by_subsystem(it->client, "video4linux");
+
+ return (GstAmlV4l2Iterator *)it;
+}
+
+gboolean
+gst_aml_v4l2_iterator_next(GstAmlV4l2Iterator *_it)
+{
+ struct _GstAmlV4l2GUdevIterator *it = (struct _GstAmlV4l2GUdevIterator *)_it;
+ const gchar *device_name;
+
+ if (it->device)
+ g_object_unref(it->device);
+
+ it->device = NULL;
+ it->parent.device_path = NULL;
+ it->parent.device_name = NULL;
+
+ if (it->devices == NULL)
+ return FALSE;
+
+ it->device = it->devices->data;
+ it->devices = g_list_delete_link(it->devices, it->devices);
+
+ device_name = g_udev_device_get_property(it->device, "ID_V4L_PRODUCT");
+ if (!device_name)
+ device_name = g_udev_device_get_property(it->device, "ID_MODEL_ENC");
+ if (!device_name)
+ device_name = g_udev_device_get_property(it->device, "ID_MODEL");
+
+ it->parent.device_path = g_udev_device_get_device_file(it->device);
+ it->parent.device_name = device_name;
+ it->parent.sys_path = g_udev_device_get_sysfs_path(it->device);
+
+ return TRUE;
+}
+
+void gst_aml_v4l2_iterator_free(GstAmlV4l2Iterator *_it)
+{
+ struct _GstAmlV4l2GUdevIterator *it = (struct _GstAmlV4l2GUdevIterator *)_it;
+ g_list_free_full(it->devices, g_object_unref);
+ gst_object_unref(it->client);
+ g_slice_free(struct _GstAmlV4l2GUdevIterator, it);
+}
+
+#else /* No GUDEV */
+
+struct _GstAmlV4l2FsIterator
+{
+ GstAmlV4l2Iterator parent;
+ gint base_idx;
+ gint video_idx;
+ gchar *device;
+};
+
+GstAmlV4l2Iterator *
+gst_aml_v4l2_iterator_new(void)
+{
+ struct _GstAmlV4l2FsIterator *it;
+
+ it = g_slice_new0(struct _GstAmlV4l2FsIterator);
+ it->base_idx = 0;
+ it->video_idx = -1;
+ it->device = NULL;
+
+ return (GstAmlV4l2Iterator *)it;
+}
+
+gboolean
+gst_aml_v4l2_iterator_next(GstAmlV4l2Iterator *_it)
+{
+ struct _GstAmlV4l2FsIterator *it = (struct _GstAmlV4l2FsIterator *)_it;
+ static const gchar *dev_base[] = {"/dev/video", "/dev/v4l2/video", NULL};
+ gchar *device = NULL;
+
+ g_free((gchar *)it->parent.device_path);
+ it->parent.device_path = NULL;
+
+ while (device == NULL)
+ {
+ it->video_idx++;
+
+ if (it->video_idx >= 64)
+ {
+ it->video_idx = 0;
+ it->base_idx++;
+ }
+
+ if (dev_base[it->base_idx] == NULL)
+ {
+ it->video_idx = 0;
+ break;
+ }
+
+ device = g_strdup_printf("%s%d", dev_base[it->base_idx], it->video_idx);
+
+ if (g_file_test(device, G_FILE_TEST_EXISTS))
+ {
+ it->parent.device_path = device;
+ break;
+ }
+
+ g_free(device);
+ device = NULL;
+ }
+
+ return it->parent.device_path != NULL;
+}
+
+void gst_aml_v4l2_iterator_free(GstAmlV4l2Iterator *_it)
+{
+ struct _GstAmlV4l2FsIterator *it = (struct _GstAmlV4l2FsIterator *)_it;
+ g_free((gchar *)it->parent.device_path);
+ g_slice_free(struct _GstAmlV4l2FsIterator, it);
+}
+
+#endif
+
+void gst_aml_v4l2_clear_error(GstAmlV4l2Error *v4l2err)
+{
+ if (v4l2err)
+ {
+ g_clear_error(&v4l2err->error);
+ g_free(v4l2err->dbg_message);
+ v4l2err->dbg_message = NULL;
+ }
+}
+
+void gst_aml_v4l2_error(gpointer element, GstAmlV4l2Error *v4l2err)
+{
+ GError *error;
+
+ if (!v4l2err || !v4l2err->error)
+ return;
+
+ error = v4l2err->error;
+
+ if (error->message)
+ GST_WARNING_OBJECT(element, "error: %s", error->message);
+
+ if (v4l2err->dbg_message)
+ GST_WARNING_OBJECT(element, "error: %s", v4l2err->dbg_message);
+
+ gst_element_message_full(GST_ELEMENT(element), GST_MESSAGE_ERROR,
+ error->domain, error->code, error->message, v4l2err->dbg_message,
+ v4l2err->file, v4l2err->func, v4l2err->line);
+
+ error->message = NULL;
+ v4l2err->dbg_message = NULL;
+
+ gst_aml_v4l2_clear_error(v4l2err);
+}