gstreamer/ext/lcs/gstcolorspace.c

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/* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <gst/video/video.h>
#include <lcs/lcs.h>
#include <string.h>
#define GST_TYPE_COLORSPACE \
(gst_colorspace_get_type())
#define GST_COLORSPACE(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_COLORSPACE,GstColorspace))
#define GST_COLORSPACE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ULAW,GstColorspace))
#define GST_IS_COLORSPACE(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_COLORSPACE))
#define GST_IS_COLORSPACE_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_COLORSPACE))
typedef struct _GstColorspace GstColorspace;
typedef struct _GstColorspaceClass GstColorspaceClass;
struct _GstColorspace
{
GstElement element;
GstPad *sinkpad, *srcpad;
LCSConverter *converter;
gboolean passthrough;
gint width, height;
double framerate;
gboolean disabled;
};
struct _GstColorspaceClass
{
GstElementClass parent_class;
};
/* elementfactory information */
static GstElementDetails colorspace_details = {
"Colorspace converter",
"Filter/Effect",
"Converts video from one colorspace to another",
"Wim Taymans <wim.taymans@chello.be>"
};
/* Stereo signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
ARG_0,
ARG_SOURCE,
ARG_DEST
};
static GType gst_colorspace_get_type (void);
static void gst_colorspace_class_init (GstColorspaceClass * klass);
static void gst_colorspace_base_init (GstColorspaceClass * klass);
static void gst_colorspace_init (GstColorspace * space);
static void gst_colorspace_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_colorspace_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstPadLinkReturn
gst_colorspace_link (GstPad * pad, const GstCaps * caps);
static void gst_colorspace_chain (GstPad * pad, GstData * _data);
static GstStateChangeReturn gst_colorspace_change_state (GstElement * element,
GstStateChange transition);
static GstElementClass *parent_class = NULL;
/*static guint gst_colorspace_signals[LAST_SIGNAL] = { 0 }; */
static GstStaticPadTemplate gst_colorspace_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_RGB "; "
GST_VIDEO_CAPS_BGR "; "
GST_VIDEO_CAPS_RGBx "; "
GST_VIDEO_CAPS_xRGB "; "
GST_VIDEO_CAPS_BGRx "; "
GST_VIDEO_CAPS_xBGR "; "
GST_VIDEO_CAPS_RGB_16 "; "
GST_VIDEO_CAPS_RGB_15 "; "
GST_VIDEO_CAPS_YUV ("{ I420, YV12, YUY2, YVYU, UYVY, YUV9, YVU9, "
"Y800, Y41P, Y41B, Y42B, IUY2 }")
)
);
static GstStaticPadTemplate gst_colorspace_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_RGB "; "
GST_VIDEO_CAPS_BGR "; "
GST_VIDEO_CAPS_RGBx "; "
GST_VIDEO_CAPS_xRGB "; "
GST_VIDEO_CAPS_BGRx "; "
GST_VIDEO_CAPS_xBGR "; "
GST_VIDEO_CAPS_RGB_16 "; "
GST_VIDEO_CAPS_RGB_15 "; "
GST_VIDEO_CAPS_YUV ("{ I420, YV12, YUY2, YVYU, UYVY, YUV9, YVU9, "
"Y800, Y41P, Y41B, Y42B, IUY2 }")
)
);
static const LCSFormat *
colorspace_find_lcs_format (const GstCaps * caps)
{
const LCSFormat *format = NULL;
const char *name;
const GstStructure *structure = gst_caps_get_structure (caps, 0);
name = gst_structure_get_name (structure);
if (strcmp (name, "video/x-raw-rgb") == 0) {
LCSRGBPackedFormat *rgb_fmt = g_new (LCSRGBPackedFormat, 1);
gint mask;
gchar *format_name;
int endianness;
format = (const LCSFormat *) rgb_fmt;
((LCSFormat *) rgb_fmt)->type = LCS_FORMAT_RGB_PACKED;
gst_structure_get_int (structure, "bpp",
&((LCSFormat *) rgb_fmt)->bits_per_pixel);
gst_structure_get_int (structure, "red_mask", &mask);
lcs_utils_mask_to_shift (mask, &rgb_fmt->bits_per_component[LCS_R],
&rgb_fmt->component_bit_offset[LCS_R]);
gst_structure_get_int (structure, "green_mask", &mask);
lcs_utils_mask_to_shift (mask, &rgb_fmt->bits_per_component[LCS_G],
&rgb_fmt->component_bit_offset[LCS_G]);
gst_structure_get_int (structure, "blue_mask", &mask);
lcs_utils_mask_to_shift (mask, &rgb_fmt->bits_per_component[LCS_B],
&rgb_fmt->component_bit_offset[LCS_B]);
rgb_fmt->bits_per_component[LCS_A] = 0;
rgb_fmt->component_bit_offset[LCS_A] = 0;
gst_structure_get_int (structure, "endianness", &endianness);
rgb_fmt->endianness = endianness;
format_name = g_strdup_printf ("GST_RGB_%d", format->bits_per_pixel);
lcs_register_format (format_name, (LCSFormat *) rgb_fmt, 1);
} else if (strcmp (name, "video/x-raw-yuv") == 0) {
guint32 space;
gchar fourcc[5];
gst_structure_get_fourcc (structure, "format", &space);
lcs_utils_fourcc_to_string (space, fourcc);
fourcc[4] = '\0';
format = lcs_find_format (fourcc);
} else {
g_assert_not_reached ();
}
return format;
}
static guint32
gst_colorspace_caps_get_fourcc (const GstCaps * caps)
{
guint32 format;
GstStructure *structure;
structure = gst_caps_get_structure (caps, 0);
if (strcmp (gst_structure_get_name (structure), "video/x-raw-rgb") == 0) {
format = GST_MAKE_FOURCC ('R', 'G', 'B', ' ');
} else {
gst_structure_get_fourcc (structure, "format", &format);
}
return format;
}
static gboolean
colorspace_setup_converter (GstColorspace * space, const GstCaps * from_caps,
const GstCaps * to_caps)
{
const LCSFormat *from_format = NULL;
const LCSFormat *to_format = NULL;
guint32 from_space, to_space;
g_return_val_if_fail (to_caps != NULL, FALSE);
g_return_val_if_fail (from_caps != NULL, FALSE);
from_space = gst_colorspace_caps_get_fourcc (from_caps);
to_space = gst_colorspace_caps_get_fourcc (to_caps);
from_format = colorspace_find_lcs_format (from_caps);
to_format = colorspace_find_lcs_format (to_caps);
GST_DEBUG ("trying from " GST_FOURCC_FORMAT " to " GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (from_space), GST_FOURCC_ARGS (to_space));
space->converter = lcs_find_converter (from_format, to_format, LCS_FLAG_FAST);
if (space->converter) {
GST_DEBUG ("trying from " GST_FOURCC_FORMAT " to " GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (from_space), GST_FOURCC_ARGS (to_space));
space->disabled = FALSE;
return TRUE;
}
return FALSE;
}
static GstCaps *
gst_colorspace_getcaps (GstPad * pad)
{
#if unused
GstColorspace *space;
GstCaps *result;
GstCaps *peercaps;
GstCaps *ourcaps;
space = GST_COLORSPACE (gst_pad_get_parent (pad));
/* we can do everything our peer can... */
peercaps = gst_caps_copy (gst_pad_get_allowed_caps (space->srcpad));
/* and our own template of course */
ourcaps = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
/* merge them together, we prefer the peercaps first */
result = gst_caps_prepend (ourcaps, peercaps);
return result;
#endif
return gst_caps_copy (gst_pad_get_pad_template_caps (pad));
}
static GstPadLinkReturn
gst_colorspace_link (GstPad * pad, const GstCaps * caps)
{
GstStructure *structure;
GstPad *otherpad;
GstCaps *othercaps;
GstColorspace *space;
int width;
int height;
double framerate;
GstPadLinkReturn ret;
space = GST_COLORSPACE (gst_pad_get_parent (pad));
otherpad = (pad == space->srcpad) ? space->sinkpad : space->srcpad;
structure = gst_caps_get_structure (caps, 0);
gst_structure_get_int (structure, "width", &width);
gst_structure_get_int (structure, "height", &height);
gst_structure_get_double (structure, "framerate", &framerate);
ret = gst_pad_try_set_caps (otherpad, caps);
if (GST_PAD_LINK_SUCCESSFUL (ret)) {
/* passthrough */
space->passthrough = TRUE;
return GST_PAD_LINK_OK;
}
space->passthrough = FALSE;
if (gst_pad_is_negotiated (otherpad)) {
othercaps = gst_caps_copy (gst_pad_get_negotiated_caps (otherpad));
gst_caps_set_simple (othercaps,
"width", G_TYPE_INT, width,
"height", G_TYPE_INT, height,
"framerate", G_TYPE_DOUBLE, framerate, NULL);
ret = gst_pad_try_set_caps (otherpad, othercaps);
if (!GST_PAD_LINK_SUCCESSFUL (ret)) {
return ret;
}
if (colorspace_setup_converter (space, caps, othercaps)) {
space->width = width;
space->height = height;
space->framerate = framerate;
} else {
return GST_PAD_LINK_REFUSED;
}
}
return GST_PAD_LINK_OK;
}
static GType
gst_colorspace_get_type (void)
{
static GType colorspace_type = 0;
if (!colorspace_type) {
static const GTypeInfo colorspace_info = {
sizeof (GstColorspaceClass),
(GBaseInitFunc) gst_colorspace_base_init,
NULL,
(GClassInitFunc) gst_colorspace_class_init,
NULL,
NULL,
sizeof (GstColorspace),
0,
(GInstanceInitFunc) gst_colorspace_init,
};
colorspace_type =
g_type_register_static (GST_TYPE_ELEMENT, "GstColorspaceLCS",
&colorspace_info, 0);
}
return colorspace_type;
}
static void
gst_colorspace_base_init (GstColorspaceClass * klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_colorspace_src_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_colorspace_sink_template));
gst_element_class_set_details (element_class, &colorspace_details);
}
static void
gst_colorspace_class_init (GstColorspaceClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
gobject_class->set_property = gst_colorspace_set_property;
gobject_class->get_property = gst_colorspace_get_property;
gstelement_class->change_state = gst_colorspace_change_state;
}
static void
gst_colorspace_init (GstColorspace * space)
{
space->sinkpad =
gst_pad_new_from_template (gst_static_pad_template_get
(&gst_colorspace_sink_template), "sink");
gst_pad_set_link_function (space->sinkpad, gst_colorspace_link);
gst_pad_set_getcaps_function (space->sinkpad, gst_colorspace_getcaps);
gst_pad_set_chain_function (space->sinkpad, gst_colorspace_chain);
gst_element_add_pad (GST_ELEMENT (space), space->sinkpad);
space->srcpad =
gst_pad_new_from_template (gst_static_pad_template_get
(&gst_colorspace_src_template), "src");
gst_element_add_pad (GST_ELEMENT (space), space->srcpad);
gst_pad_set_link_function (space->srcpad, gst_colorspace_link);
space->disabled = TRUE;
}
static void
gst_colorspace_chain (GstPad * pad, GstData * _data)
{
GstBuffer *buf = GST_BUFFER (_data);
GstColorspace *space;
GstBuffer *outbuf;
g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_PAD (pad));
g_return_if_fail (buf != NULL);
space = GST_COLORSPACE (gst_pad_get_parent (pad));
g_return_if_fail (space != NULL);
g_return_if_fail (GST_IS_COLORSPACE (space));
if (space->passthrough) {
outbuf = buf;
} else {
unsigned long size;
lcs_format_buffer_size (lcs_converter_get_dest_format (space->converter),
space->width, space->height, &size);
outbuf = gst_pad_alloc_buffer (space->srcpad, GST_BUFFER_OFFSET_NONE, size);
lcs_convert_auto (space->converter,
GST_BUFFER_DATA (buf),
GST_BUFFER_DATA (outbuf), space->width, space->height);
GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buf);
GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (buf);
gst_buffer_unref (buf);
}
gst_pad_push (space->srcpad, GST_DATA (outbuf));
}
static GstStateChangeReturn
gst_colorspace_change_state (GstElement * element, GstStateChange transition)
{
GstColorspace *space;
space = GST_COLORSPACE (element);
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
break;
}
parent_class->change_state (element, transition);
return GST_STATE_CHANGE_SUCCESS;
}
static void
gst_colorspace_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstColorspace *space;
g_return_if_fail (GST_IS_COLORSPACE (object));
space = GST_COLORSPACE (object);
switch (prop_id) {
default:
break;
}
}
static void
gst_colorspace_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstColorspace *space;
g_return_if_fail (GST_IS_COLORSPACE (object));
space = GST_COLORSPACE (object);
switch (prop_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
plugin_init (GstPlugin * plugin)
{
lcs_init (NULL, NULL);
return gst_element_register (plugin, "lcscolorspace", GST_RANK_NONE,
GST_TYPE_COLORSPACE);
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"lcscolorspace",
"LCS colorspace convertor",
plugin_init, VERSION, "LGPL", GST_PACKAGE, GST_ORIGIN)