--- /dev/null
+/* GStreamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * 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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include <string.h>
+#include <inttypes.h>
+
+#include "gstsnapshot.h"
+
+#define MAX_HEIGHT 2048
+
+
+static GstElementDetails snapshot_details = {
+ "snapshot",
+ "Filter/Effect",
+ "Dump a frame to a png file",
+ VERSION,
+ "Jeremy SIMON <jsimon13@yahoo.fr>",
+ "(C) 2002",
+};
+
+GST_PAD_TEMPLATE_FACTORY (snapshot_src_factory,
+ "src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_CAPS_NEW (
+ "snapshot_src",
+ "video/raw",
+ "format", GST_PROPS_LIST (
+ GST_PROPS_FOURCC (GST_STR_FOURCC ("I420")),
+ GST_PROPS_FOURCC (GST_STR_FOURCC ("YUY2"))
+ ),
+ "width", GST_PROPS_INT_RANGE(0, G_MAXINT),
+ "height", GST_PROPS_INT_RANGE(0, G_MAXINT)
+ )
+)
+
+GST_PAD_TEMPLATE_FACTORY (snapshot_sink_factory,
+ "sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_CAPS_NEW (
+ "snapshot_src",
+ "video/raw",
+ "format", GST_PROPS_LIST (
+ GST_PROPS_FOURCC (GST_STR_FOURCC ("I420")),
+ GST_PROPS_FOURCC (GST_STR_FOURCC ("YUY2"))
+ ),
+ "width", GST_PROPS_INT_RANGE(0, G_MAXINT),
+ "height", GST_PROPS_INT_RANGE(0, G_MAXINT)
+ )
+)
+
+
+/* Shot signals and args */
+enum {
+ /* FILL ME */
+ SNAPSHOT_SIGNAL,
+ LAST_SIGNAL
+};
+
+enum {
+ ARG_0,
+ ARG_FRAME,
+ ARG_LOCATION
+};
+
+static GType gst_snapshot_get_type (void);
+static void gst_snapshot_class_init (GstShotClass *klass);
+static void gst_snapshot_init (GstShot *snapshot);
+
+static void gst_snapshot_chain (GstPad *pad, GstBuffer *buf);
+
+static void gst_snapshot_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
+static void gst_snapshot_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
+static void snapshot_handler(GstElement *element);
+
+
+static GstElementClass *parent_class = NULL;
+static guint gst_snapshot_signals[LAST_SIGNAL] = { 0 };
+
+
+static void user_error_fn(png_structp png_ptr, png_const_charp error_msg)
+{
+ g_warning("%s", error_msg);
+}
+
+static void user_warning_fn(png_structp png_ptr, png_const_charp warning_msg)
+{
+ g_warning("%s", warning_msg);
+}
+
+GType
+gst_snapshot_get_type (void)
+{
+ static GType snapshot_type = 0;
+
+ if (!snapshot_type) {
+ static const GTypeInfo snapshot_info = {
+ sizeof(GstShotClass), NULL, NULL, (GClassInitFunc)gst_snapshot_class_init,
+ NULL,
+ NULL,
+ sizeof(GstShot),
+ 0,
+ (GInstanceInitFunc)gst_snapshot_init,
+ };
+ snapshot_type = g_type_register_static(GST_TYPE_ELEMENT, "GstShot", &snapshot_info, 0);
+ }
+ return snapshot_type;
+}
+
+static void
+gst_snapshot_class_init (GstShotClass *klass)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *gstelement_class;
+
+ gobject_class = (GObjectClass*)klass;
+ gstelement_class = (GstElementClass*)klass;
+
+ parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
+
+ g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_FRAME,
+ g_param_spec_long("frame","frame","frame",
+ 0, G_MAXLONG, 0, G_PARAM_READWRITE));
+ g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_LOCATION,
+ g_param_spec_string("location","location","location",
+ 0,G_PARAM_READWRITE));
+
+ gst_snapshot_signals[SNAPSHOT_SIGNAL] =
+ g_signal_new("snapshot", G_TYPE_FROM_CLASS(klass),
+ G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET(GstShotClass, snapshot),
+ NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
+
+ klass->snapshot = snapshot_handler;
+
+ gobject_class->set_property = gst_snapshot_set_property;
+ gobject_class->get_property = gst_snapshot_get_property;
+}
+
+static void
+snapshot_handler(GstElement *element)
+{
+ GstShot *snapshot;
+
+ snapshot = GST_SNAPSHOT( element );
+ snapshot->snapshot_asked=TRUE;
+}
+
+
+static gboolean
+gst_snapshot_sinkconnect (GstPad *pad, GstCaps *caps)
+{
+ GstShot *filter;
+ GstCaps *from_caps, *to_caps;
+
+ filter = GST_SNAPSHOT (gst_pad_get_parent (pad));
+
+ if (!GST_CAPS_IS_FIXED (caps))
+ return GST_PAD_CONNECT_DELAYED;
+
+ gst_caps_get_int (caps, "width", &filter->width);
+ gst_caps_get_int (caps, "height", &filter->height);
+ gst_caps_get_fourcc_int (caps, "format", &filter->format);
+ filter->to_bpp = 24;
+
+
+ to_caps = GST_CAPS_NEW (
+ "snapshot_conversion",
+ "video/raw",
+ "format", GST_PROPS_FOURCC (GST_STR_FOURCC ("RGB ")),
+ "width", GST_PROPS_INT( filter->width ),
+ "height", GST_PROPS_INT( filter->height ),
+ "red_mask", GST_PROPS_INT (0xFF0000),
+ "green_mask", GST_PROPS_INT (0x00FF00),
+ "blue_mask", GST_PROPS_INT (0x0000FF),
+ "bpp", GST_PROPS_INT( 24 )
+ );
+
+ switch ( filter->format )
+ {
+ case GST_MAKE_FOURCC('Y','U','Y','2'):
+ case GST_MAKE_FOURCC('I','4','2','0'):
+ from_caps = GST_CAPS_NEW (
+ "snapshot_from",
+ "video/raw",
+ "format", GST_PROPS_FOURCC (GST_STR_FOURCC ("I420")),
+ "width", GST_PROPS_INT( filter->width ),
+ "height", GST_PROPS_INT( filter->height ),
+ "red_mask", GST_PROPS_INT (0xFF0000),
+ "green_mask", GST_PROPS_INT (0x00FF00),
+ "blue_mask", GST_PROPS_INT (0x0000FF),
+ "bpp", GST_PROPS_INT( 24 )
+ );
+
+ filter->converter = gst_colorspace_yuv2rgb_get_converter ( from_caps, to_caps );
+ break;
+
+ default :
+ break;
+ }
+
+ filter->png_struct_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, (png_voidp)NULL, user_error_fn, user_warning_fn);
+ if ( filter->png_struct_ptr == NULL )
+ g_warning( "Failed to initialize png structure");
+
+ filter->png_info_ptr = png_create_info_struct( filter->png_struct_ptr );
+
+ if (setjmp( filter->png_struct_ptr->jmpbuf))
+ png_destroy_write_struct(&filter->png_struct_ptr, &filter->png_info_ptr);
+
+ gst_pad_try_set_caps (filter->srcpad, caps);
+
+ return GST_PAD_CONNECT_OK;
+}
+
+static void
+gst_snapshot_init (GstShot *snapshot)
+{
+ snapshot->sinkpad = gst_pad_new_from_template (GST_PAD_TEMPLATE_GET (snapshot_sink_factory), "sink");
+ gst_pad_set_connect_function (snapshot->sinkpad, gst_snapshot_sinkconnect);
+ gst_pad_set_chain_function (snapshot->sinkpad, gst_snapshot_chain);
+ gst_element_add_pad (GST_ELEMENT (snapshot), snapshot->sinkpad);
+
+ snapshot->srcpad = gst_pad_new_from_template (GST_PAD_TEMPLATE_GET (snapshot_src_factory), "src");
+ gst_element_add_pad (GST_ELEMENT (snapshot), snapshot->srcpad);
+
+ snapshot->cur_frame = 0;
+ snapshot->frame=-1;
+ snapshot->snapshot_asked=FALSE;
+}
+
+
+static void
+gst_snapshot_chain (GstPad *pad, GstBuffer *buf)
+{
+ GstShot *snapshot;
+ guchar *data, *data_to_convert, *buffer_i420, *data_converted;
+ gulong size,image_size;
+ GstBuffer *outbuf;
+ gint i;
+ png_byte *row_pointers[ MAX_HEIGHT ];
+ FILE *fp;
+
+ g_return_if_fail(pad != NULL);
+ g_return_if_fail(GST_IS_PAD(pad));
+ g_return_if_fail(buf != NULL);
+
+ snapshot = GST_SNAPSHOT (GST_OBJECT_PARENT (pad));
+
+ data = GST_BUFFER_DATA(buf);
+ size = GST_BUFFER_SIZE(buf);
+
+ GST_DEBUG (0,"snapshot: have buffer of %d\n", GST_BUFFER_SIZE(buf));
+
+ outbuf = gst_buffer_new();
+ GST_BUFFER_DATA(outbuf) = g_malloc(GST_BUFFER_SIZE(buf));
+ GST_BUFFER_SIZE(outbuf) = GST_BUFFER_SIZE(buf);
+
+ snapshot->cur_frame++;
+ if ( snapshot->cur_frame == snapshot->frame || snapshot->snapshot_asked == TRUE )
+ {
+ snapshot->snapshot_asked = FALSE;
+ image_size = snapshot->width * snapshot->height;
+ data_converted = g_malloc ((image_size * (snapshot->to_bpp/8)) );
+
+ if ( snapshot->format == GST_MAKE_FOURCC('Y','U','Y','2') )
+ {
+ GST_DEBUG(0, "YUY2 => RGB\n");
+ buffer_i420 = g_malloc ((image_size * (snapshot->to_bpp/8)) );
+ gst_colorspace_yuy2_to_i420( data, buffer_i420, snapshot->width, snapshot->height);
+ data_to_convert = buffer_i420;
+ }
+ else
+ data_to_convert = data;
+
+ gst_colorspace_convert (snapshot->converter, data_to_convert, data_converted);
+
+ GST_INFO(0,"dumpfile : %s\n", snapshot->location );
+ fp = fopen( snapshot->location, "wb" );
+ if ( fp == NULL )
+ g_warning(" Can not open %s\n", snapshot->location );
+ else
+ {
+ png_set_filter( snapshot->png_struct_ptr, 0, PNG_FILTER_NONE | PNG_FILTER_VALUE_NONE );
+ png_init_io(snapshot->png_struct_ptr, fp);
+ png_set_compression_level( snapshot->png_struct_ptr, 9);
+ png_set_IHDR(
+ snapshot->png_struct_ptr,
+ snapshot->png_info_ptr,
+ snapshot->width,
+ snapshot->height,
+ snapshot->to_bpp/3,
+ PNG_COLOR_TYPE_RGB,
+ PNG_INTERLACE_NONE,
+ PNG_COMPRESSION_TYPE_DEFAULT,
+ PNG_FILTER_TYPE_DEFAULT
+ );
+
+ for ( i = 0; i < snapshot->height; i++ )
+ row_pointers[i] = data_converted + (snapshot->width * i * snapshot->to_bpp/8 );
+
+ png_write_info( snapshot->png_struct_ptr, snapshot->png_info_ptr );
+ png_write_image( snapshot->png_struct_ptr, row_pointers );
+ png_write_end( snapshot->png_struct_ptr, NULL );
+ png_destroy_info_struct ( snapshot->png_struct_ptr, &snapshot->png_info_ptr );
+ png_destroy_write_struct( &snapshot->png_struct_ptr, (png_infopp)NULL );
+ fclose( fp );
+ }
+ }
+
+ gst_pad_push(snapshot->srcpad,buf );
+}
+
+static void
+gst_snapshot_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
+{
+ GstShot *snapshot;
+
+ g_return_if_fail(GST_IS_SNAPSHOT(object));
+ snapshot = GST_SNAPSHOT(object);
+
+ switch (prop_id) {
+ case ARG_LOCATION:
+ snapshot->location = g_strdup(g_value_get_string (value));
+ break;
+ case ARG_FRAME:
+ snapshot->frame = g_value_get_long(value);
+ break;
+ default:
+ break;
+ }
+}
+
+static void
+gst_snapshot_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
+{
+ GstShot *snapshot;
+
+ g_return_if_fail(GST_IS_SNAPSHOT(object));
+ snapshot = GST_SNAPSHOT(object);
+
+ switch (prop_id) {
+ case ARG_LOCATION:
+ g_value_set_string(value, snapshot->location);
+ break;
+ case ARG_FRAME:
+ g_value_set_long(value, snapshot->frame);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+
+static gboolean
+plugin_init (GModule *module, GstPlugin *plugin)
+{
+ GstElementFactory *factory;
+
+ factory = gst_element_factory_new("snapshot",GST_TYPE_SNAPSHOT,
+ &snapshot_details);
+ g_return_val_if_fail(factory != NULL, FALSE);
+
+ gst_element_factory_add_pad_template (factory, GST_PAD_TEMPLATE_GET (snapshot_sink_factory));
+ gst_element_factory_add_pad_template (factory, GST_PAD_TEMPLATE_GET (snapshot_src_factory));
+
+ gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
+
+
+ return TRUE;
+}
+
+GstPluginDesc plugin_desc = {
+ GST_VERSION_MAJOR,
+ GST_VERSION_MINOR,
+ "snapshot",
+ plugin_init
+};
+
projects / platform / upstream / gst-plugins-bad.git / commitdiff