gstreamer/gst/rawparse/gstvideoparse.c

418 lines
13 KiB
C

/* GStreamer
* Copyright (C) 2006 David A. Schleef <ds@schleef.org>
* Copyright (C) 2007,2009 Sebastian Dröge <sebastian.droege@collabora.co.uk>
*
* gstvideoparse.c:
*
* 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.
*/
/**
* SECTION:element-videoparse
*
* Converts a byte stream into video frames.
*
* <note>This element is deprecated. Use #GstRawVideoParse instead.</note>
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
/* FIXME 0.11: suppress warnings for deprecated API such as g_value_array stuff
* for now with newer GLib versions (>= 2.31.0) */
#define GLIB_DISABLE_DEPRECATION_WARNINGS
#include <gst/gst.h>
#include <gst/video/video.h>
#include "gstvideoparse.h"
static GstStaticPadTemplate static_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
static GstStaticPadTemplate static_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-raw")
);
static void gst_video_parse_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_video_parse_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GValueArray *gst_video_parse_int_valarray_from_string (const gchar *
str);
static gchar *gst_video_parse_int_valarray_to_string (GValueArray * valarray);
GST_DEBUG_CATEGORY_STATIC (gst_video_parse_debug);
#define GST_CAT_DEFAULT gst_video_parse_debug
enum
{
PROP_0,
PROP_FORMAT,
PROP_WIDTH,
PROP_HEIGHT,
PROP_PAR,
PROP_FRAMERATE,
PROP_INTERLACED,
PROP_TOP_FIELD_FIRST,
PROP_STRIDES,
PROP_OFFSETS,
PROP_FRAMESIZE
};
#define gst_video_parse_parent_class parent_class
G_DEFINE_TYPE (GstVideoParse, gst_video_parse, GST_TYPE_BIN);
static void
gst_video_parse_class_init (GstVideoParseClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
gobject_class->set_property = gst_video_parse_set_property;
gobject_class->get_property = gst_video_parse_get_property;
g_object_class_install_property (gobject_class, PROP_FORMAT,
g_param_spec_enum ("format", "Format", "Format of images in raw stream",
GST_TYPE_VIDEO_FORMAT, GST_VIDEO_FORMAT_I420,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_WIDTH,
g_param_spec_int ("width", "Width", "Width of images in raw stream",
0, INT_MAX, 320, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_HEIGHT,
g_param_spec_int ("height", "Height", "Height of images in raw stream",
0, INT_MAX, 240, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_FRAMERATE,
gst_param_spec_fraction ("framerate", "Frame Rate",
"Frame rate of images in raw stream", 0, 1, G_MAXINT, 1, 25, 1,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_PAR,
gst_param_spec_fraction ("pixel-aspect-ratio", "Pixel Aspect Ratio",
"Pixel aspect ratio of images in raw stream", 1, 100, 100, 1, 1, 1,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_INTERLACED,
g_param_spec_boolean ("interlaced", "Interlaced flag",
"True if video is interlaced", FALSE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_TOP_FIELD_FIRST,
g_param_spec_boolean ("top-field-first", "Top field first",
"True if top field is earlier than bottom field", TRUE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_STRIDES,
g_param_spec_string ("strides", "Strides",
"Stride of each planes in bytes using string format: 's0,s1,s2,s3'",
NULL, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_OFFSETS,
g_param_spec_string ("offsets", "Offsets",
"Offset of each planes in bytes using string format: 'o0,o1,o2,o3'",
NULL, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_FRAMESIZE,
g_param_spec_uint ("framesize", "Framesize",
"Size of an image in raw stream (0: default)", 0, G_MAXUINT, 0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
gst_element_class_set_static_metadata (gstelement_class, "Video Parse",
"Filter/Video",
"Converts stream into video frames (deprecated: use rawvideoparse instead)",
"David Schleef <ds@schleef.org>, "
"Sebastian Dröge <sebastian.droege@collabora.co.uk>");
gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&static_sink_template));
gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&static_src_template));
GST_DEBUG_CATEGORY_INIT (gst_video_parse_debug, "videoparse", 0,
"videoparse element");
}
static void
gst_video_parse_init (GstVideoParse * vp)
{
GstPad *inner_pad;
GstPad *ghostpad;
vp->rawvideoparse =
gst_element_factory_make ("rawvideoparse", "inner_rawvideoparse");
g_assert (vp->rawvideoparse != NULL);
gst_bin_add (GST_BIN (vp), vp->rawvideoparse);
inner_pad = gst_element_get_static_pad (vp->rawvideoparse, "sink");
ghostpad =
gst_ghost_pad_new_from_template ("sink", inner_pad,
gst_element_class_get_pad_template (GST_ELEMENT_GET_CLASS (vp), "sink"));
gst_element_add_pad (GST_ELEMENT (vp), ghostpad);
gst_object_unref (GST_OBJECT (inner_pad));
inner_pad = gst_element_get_static_pad (vp->rawvideoparse, "src");
ghostpad =
gst_ghost_pad_new_from_template ("src", inner_pad,
gst_element_class_get_pad_template (GST_ELEMENT_GET_CLASS (vp), "src"));
gst_element_add_pad (GST_ELEMENT (vp), ghostpad);
gst_object_unref (GST_OBJECT (inner_pad));
}
static void
gst_video_parse_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstVideoParse *vp = GST_VIDEO_PARSE (object);
switch (prop_id) {
case PROP_FORMAT:
g_object_set (G_OBJECT (vp->rawvideoparse), "format",
g_value_get_enum (value), NULL);
break;
case PROP_WIDTH:
g_object_set (G_OBJECT (vp->rawvideoparse), "width",
g_value_get_int (value), NULL);
break;
case PROP_HEIGHT:
g_object_set (G_OBJECT (vp->rawvideoparse), "height",
g_value_get_int (value), NULL);
break;
case PROP_FRAMERATE:
g_object_set (G_OBJECT (vp->rawvideoparse), "framerate",
gst_value_get_fraction_numerator (value),
gst_value_get_fraction_denominator (value), NULL);
break;
case PROP_PAR:
g_object_set (G_OBJECT (vp->rawvideoparse), "pixel-aspect-ratio",
gst_value_get_fraction_numerator (value),
gst_value_get_fraction_denominator (value), NULL);
break;
case PROP_INTERLACED:
g_object_set (G_OBJECT (vp->rawvideoparse), "interlaced",
g_value_get_boolean (value), NULL);
break;
case PROP_TOP_FIELD_FIRST:
g_object_set (G_OBJECT (vp->rawvideoparse), "top-field-first",
g_value_get_boolean (value), NULL);
break;
case PROP_STRIDES:{
GValueArray *valarray =
gst_video_parse_int_valarray_from_string (g_value_get_string (value));
if (valarray != NULL) {
g_object_set (G_OBJECT (vp->rawvideoparse), "plane-strides",
valarray, NULL);
g_value_array_free (valarray);
} else {
GST_WARNING_OBJECT (vp, "failed to deserialize given strides");
}
break;
}
case PROP_OFFSETS:{
GValueArray *valarray =
gst_video_parse_int_valarray_from_string (g_value_get_string (value));
if (valarray != NULL) {
g_object_set (G_OBJECT (vp->rawvideoparse), "plane-offsets",
valarray, NULL);
g_value_array_free (valarray);
} else {
GST_WARNING_OBJECT (vp, "failed to deserialize given offsets");
}
break;
}
case PROP_FRAMESIZE:
g_object_set (G_OBJECT (vp->rawvideoparse), "frame-stride",
g_value_get_uint (value), NULL);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_video_parse_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstVideoParse *vp = GST_VIDEO_PARSE (object);
switch (prop_id) {
case PROP_FORMAT:{
GstVideoFormat format;
g_object_get (G_OBJECT (vp->rawvideoparse), "format", &format, NULL);
g_value_set_enum (value, format);
break;
}
case PROP_WIDTH:{
gint width;
g_object_get (G_OBJECT (vp->rawvideoparse), "width", &width, NULL);
g_value_set_int (value, width);
break;
}
case PROP_HEIGHT:{
gint height;
g_object_get (G_OBJECT (vp->rawvideoparse), "height", &height, NULL);
g_value_set_int (value, height);
break;
}
case PROP_FRAMERATE:{
gint fps_n, fps_d;
g_object_get (G_OBJECT (vp->rawvideoparse), "framerate", &fps_n, &fps_d,
NULL);
gst_value_set_fraction (value, fps_n, fps_d);
break;
}
case PROP_PAR:{
gint par_n, par_d;
g_object_get (G_OBJECT (vp->rawvideoparse), "pixel-aspect-ratio", &par_n,
&par_d, NULL);
gst_value_set_fraction (value, par_n, par_d);
break;
}
case PROP_INTERLACED:{
gboolean interlaced;
g_object_get (G_OBJECT (vp->rawvideoparse), "interlaced", &interlaced,
NULL);
g_value_set_boolean (value, interlaced);
break;
}
case PROP_TOP_FIELD_FIRST:{
gboolean top_field_first;
g_object_get (G_OBJECT (vp->rawvideoparse), "top-field-first",
&top_field_first, NULL);
g_value_set_boolean (value, top_field_first);
break;
}
case PROP_STRIDES:{
GValueArray *array;
g_object_get (G_OBJECT (vp->rawvideoparse), "plane-strides", &array,
NULL);
g_value_take_string (value,
gst_video_parse_int_valarray_to_string (array));
break;
}
case PROP_OFFSETS:{
GValueArray *array;
g_object_get (G_OBJECT (vp->rawvideoparse), "plane-offsets", &array,
NULL);
g_value_take_string (value,
gst_video_parse_int_valarray_to_string (array));
break;
}
case PROP_FRAMESIZE:{
guint frame_stride;
g_object_get (G_OBJECT (vp->rawvideoparse), "frame-stride", &frame_stride,
NULL);
g_value_set_uint (value, frame_stride);
break;
}
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GValueArray *
gst_video_parse_int_valarray_from_string (const gchar * str)
{
gchar **strv;
guint length;
guint i;
GValueArray *valarray;
GValue gvalue = G_VALUE_INIT;
if (str == NULL)
return NULL;
strv = g_strsplit (str, ",", GST_VIDEO_MAX_PLANES);
if (strv == NULL)
return NULL;
length = g_strv_length (strv);
valarray = g_value_array_new (length);
g_value_init (&gvalue, G_TYPE_UINT);
for (i = 0; i < length; i++) {
gint64 val;
val = g_ascii_strtoll (strv[i], NULL, 10);
if (val < G_MININT || val > G_MAXINT) {
goto error;
}
g_value_set_uint (&gvalue, val);
g_value_array_insert (valarray, i, &gvalue);
}
finish:
g_strfreev (strv);
return valarray;
error:
g_value_array_free (valarray);
valarray = NULL;
goto finish;
}
static gchar *
gst_video_parse_int_valarray_to_string (GValueArray * valarray)
{
/* holds a 64-bit number as string, which can have max. 20 digits
* (with extra char for nullbyte) */
gchar stride_str[21];
gchar *str = NULL;
guint i;
for (i = 0; i < valarray->n_values; i++) {
GValue *gvalue = g_value_array_get_nth (valarray, i);
guint val = g_value_get_uint (gvalue);
g_snprintf (stride_str, sizeof (stride_str), "%u", val);
if (str == NULL) {
str = g_strdup (stride_str);
} else {
gchar *new_str = g_strdup_printf ("%s,%s", str, stride_str);
g_free (str);
str = new_str;
}
}
return str;
}