v4l2: Add JPEG encoding support

This commit adds the support for V4L JPEG stateful encoders.

diff --git a/sys/v4l2/Makefile.am b/sys/v4l2/Makefile.am
index d2d8a4a..b1c899b 100644 (file)
--- a/sys/v4l2/Makefile.am
+++ b/sys/v4l2/Makefile.am
@@ -18,6 +18,7 @@ libgstvideo4linux2_la_SOURCES = gstv4l2.c \
                                gstv4l2fwhtenc.c \
                                gstv4l2h263enc.c \
                                gstv4l2h264enc.c \
+                               gstv4l2jpegenc.c \
                                gstv4l2mpeg4enc.c \
                                gstv4l2vidorient.c \
                                gstv4l2vp8enc.c \
@@ -65,6 +66,7 @@ noinst_HEADERS = \
        gstv4l2fwhtenc.h \
        gstv4l2h263enc.h \
        gstv4l2h264enc.h \
+       gstv4l2jpegenc.h \
        gstv4l2mpeg4enc.h \
        gstv4l2vidorient.h \
        gstv4l2vp8enc.h \

diff --git a/sys/v4l2/gstv4l2.c b/sys/v4l2/gstv4l2.c
index e1298b3..ab56994 100644 (file)
--- a/sys/v4l2/gstv4l2.c
+++ b/sys/v4l2/gstv4l2.c
@@ -50,6 +50,7 @@
 #include "gstv4l2fwhtenc.h"
 #include "gstv4l2h263enc.h"
 #include "gstv4l2h264enc.h"
+#include "gstv4l2jpegenc.h"
 #include "gstv4l2mpeg4enc.h"
 #include "gstv4l2vp8enc.h"
 #include "gstv4l2vp9enc.h"
@@ -202,6 +203,10 @@ gst_v4l2_probe_and_register (GstPlugin * plugin)
         gst_v4l2_h263_enc_register (plugin, basename, it->device_path,
             sink_caps, src_caps);
 
+      if (gst_v4l2_is_jpeg_enc (sink_caps, src_caps))
+        gst_v4l2_jpeg_enc_register (plugin, basename, it->device_path,
+            sink_caps, src_caps);
+
       if (gst_v4l2_is_vp8_enc (sink_caps, src_caps))
         gst_v4l2_vp8_enc_register (plugin, basename, it->device_path,
             sink_caps, src_caps);

diff --git a/sys/v4l2/gstv4l2jpegenc.c b/sys/v4l2/gstv4l2jpegenc.c
new file mode 100644 (file)
index 0000000..9c01ffe
--- /dev/null
+++ b/sys/v4l2/gstv4l2jpegenc.c
@@ -0,0 +1,120 @@
+/*
+ * Copyright (C) 2018 Collabora Inc.
+ *    Authors:
+ *    Ezequiel Garcia <ezequiel@collabora.com>
+ *    Nicolas Dufresne <nicolas.dufresne@collabora.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 St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <unistd.h>
+#include <string.h>
+
+#include "gstv4l2object.h"
+#include "gstv4l2jpegenc.h"
+
+#include <string.h>
+#include <gst/gst-i18n-plugin.h>
+
+GST_DEBUG_CATEGORY_STATIC (gst_v4l2_jpeg_enc_debug);
+#define GST_CAT_DEFAULT gst_v4l2_jpeg_enc_debug
+
+static GstStaticCaps src_template_caps =
+GST_STATIC_CAPS ("image/jpeg");
+
+enum
+{
+  PROP_0,
+  V4L2_STD_OBJECT_PROPS,
+  /* TODO */
+};
+
+#define gst_v4l2_jpeg_enc_parent_class parent_class
+G_DEFINE_TYPE (GstV4l2JPEGEnc, gst_v4l2_jpeg_enc, GST_TYPE_V4L2_VIDEO_ENC);
+
+static void
+gst_v4l2_jpeg_enc_set_property (GObject * object,
+    guint prop_id, const GValue * value, GParamSpec * pspec)
+{
+  /* TODO */
+}
+
+static void
+gst_v4l2_jpeg_enc_get_property (GObject * object,
+    guint prop_id, GValue * value, GParamSpec * pspec)
+{
+  /* TODO */
+}
+
+static void
+gst_v4l2_jpeg_enc_init (GstV4l2JPEGEnc * self)
+{
+}
+
+static void
+gst_v4l2_jpeg_enc_class_init (GstV4l2JPEGEncClass * klass)
+{
+  GstElementClass *element_class;
+  GObjectClass *gobject_class;
+  GstV4l2VideoEncClass *baseclass;
+
+  parent_class = g_type_class_peek_parent (klass);
+
+  element_class = (GstElementClass *) klass;
+  gobject_class = (GObjectClass *) klass;
+  baseclass = (GstV4l2VideoEncClass *) (klass);
+
+  GST_DEBUG_CATEGORY_INIT (gst_v4l2_jpeg_enc_debug, "v4l2jpegenc", 0,
+      "V4L2 JPEG Encoder");
+
+  gst_element_class_set_static_metadata (element_class,
+      "V4L2 JPEG Encoder",
+      "Codec/Encoder/Video",
+      "Encode JPEG video streams via V4L2 API",
+      "Ezequiel Garcia <ezequiel@collabora.com");
+
+  gobject_class->set_property =
+      GST_DEBUG_FUNCPTR (gst_v4l2_jpeg_enc_set_property);
+  gobject_class->get_property =
+      GST_DEBUG_FUNCPTR (gst_v4l2_jpeg_enc_get_property);
+
+  baseclass->codec_name = "JPEG";
+}
+
+/* Probing functions */
+gboolean
+gst_v4l2_is_jpeg_enc (GstCaps * sink_caps, GstCaps * src_caps)
+{
+  return gst_v4l2_is_video_enc (sink_caps, src_caps,
+      gst_static_caps_get (&src_template_caps));
+}
+
+void
+gst_v4l2_jpeg_enc_register (GstPlugin * plugin, const gchar * basename,
+    const gchar * device_path, GstCaps * sink_caps, GstCaps * src_caps)
+{
+  gst_v4l2_video_enc_register (plugin, GST_TYPE_V4L2_JPEG_ENC,
+      "jpeg", basename, device_path, sink_caps,
+      gst_static_caps_get (&src_template_caps), src_caps);
+}

diff --git a/sys/v4l2/gstv4l2jpegenc.h b/sys/v4l2/gstv4l2jpegenc.h
new file mode 100644 (file)
index 0000000..8b6d0b7
--- /dev/null
+++ b/sys/v4l2/gstv4l2jpegenc.h
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2017 Collabora Inc.
+ *    Author: Nicolas Dufresne <nicolas.dufresne@collabora.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 St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef __GST_V4L2_JPEG_ENC_H__
+#define __GST_V4L2_JPEG_ENC_H__
+
+#include <gst/gst.h>
+#include "gstv4l2videoenc.h"
+
+G_BEGIN_DECLS
+#define GST_TYPE_V4L2_JPEG_ENC \
+  (gst_v4l2_jpeg_enc_get_type())
+#define GST_V4L2_JPEG_ENC(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_V4L2_JPEG_ENC,GstV4l2JPEGEnc))
+#define GST_V4L2_JPEG_ENC_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_V4L2_JPEG_ENC,GstV4l2JPEGEncClass))
+#define GST_IS_V4L2_JPEG_ENC(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_V4L2_JPEG_ENC))
+#define GST_IS_V4L2_JPEG_ENC_CLASS(obj) \
+  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_V4L2_JPEG_ENC))
+typedef struct _GstV4l2JPEGEnc GstV4l2JPEGEnc;
+typedef struct _GstV4l2JPEGEncClass GstV4l2JPEGEncClass;
+
+struct _GstV4l2JPEGEnc
+{
+  GstV4l2VideoEnc parent;
+};
+
+struct _GstV4l2JPEGEncClass
+{
+  GstV4l2VideoEncClass parent_class;
+};
+
+GType gst_v4l2_jpeg_enc_get_type (void);
+
+gboolean gst_v4l2_is_jpeg_enc (GstCaps * sink_caps, GstCaps * src_caps);
+
+void gst_v4l2_jpeg_enc_register (GstPlugin * plugin, const gchar * basename,
+    const gchar * device_path, GstCaps * sink_caps, GstCaps * src_caps);
+
+G_END_DECLS
+#endif /* __GST_V4L2_JPEG_ENC_H__ */

diff --git a/sys/v4l2/meson.build b/sys/v4l2/meson.build
index 758e506..71dbd50 100644 (file)
--- a/sys/v4l2/meson.build
+++ b/sys/v4l2/meson.build
@@ -15,6 +15,7 @@ v4l2_sources = [
   'gstv4l2fwhtenc.c',
   'gstv4l2h263enc.c',
   'gstv4l2h264enc.c',
+  'gstv4l2jpegenc.c',
   'gstv4l2mpeg4enc.c',
   'gstv4l2vidorient.c',
   'gstv4l2vp8enc.c',