Commit 0bf61ecf authored by Sebastian Dröge's avatar Sebastian Dröge
Browse files

videomixer: Add RGB, BGR, xRGB, RGBx, xBGR, BGRx support

parent bbcb4f8f
plugin_LTLIBRARIES = libgstvideomixer.la
libgstvideomixer_la_SOURCES = videomixer.c blend_ayuv.c blend_bgra.c blend_i420.c
libgstvideomixer_la_SOURCES = videomixer.c blend_ayuv.c blend_bgra.c blend_i420.c blend_rgb.c
libgstvideomixer_la_CFLAGS = $(GST_CFLAGS) $(GST_BASE_CFLAGS) $(GST_CONTROLLER_CFLAGS) $(GST_PLUGINS_BASE_CFLAGS)
libgstvideomixer_la_LIBADD = $(GST_LIBS) $(GST_BASE_LIBS) $(GST_CONTROLLER_LIBS) $(GST_PLUGINS_BASE_CFLAGS) -lgstvideo-@GST_MAJORMINOR@
libgstvideomixer_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
......
/*
* Copyright (C) 2009 Alex Ugarte <augarte@vicomtech.org>
* Copyright (C) 2009 Sebastian Dröge <sebastian.droege@collabora.co.uk>
*
* 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 <gst/gst.h>
#include <string.h>
#include "videomixer.h"
#define BLEND_NORMAL(R1,G1,B1,R2,G2,B2,alpha,R,G,B) \
R = ((R1*(255-alpha))+(R2*alpha))>>8; \
G = ((G1*(255-alpha))+(G2*alpha))>>8; \
B = ((B1*(255-alpha))+(B2*alpha))>>8;
#define BLEND_MODE BLEND_NORMAL
#define CREATE_FUNCTIONS(name, bpp, r, g, b) \
void \
gst_videomixer_blend_##name##_##name (guint8 * src, gint xpos, gint ypos, \
gint src_width, gint src_height, gdouble src_alpha, \
guint8 * dest, gint dest_width, gint dest_height) \
{ \
gint b_alpha; \
gint i, j; \
gint src_stride, dest_stride; \
gint src_add, dest_add; \
gint R, G, B; \
\
src_stride = GST_ROUND_UP_4 (src_width * bpp); \
dest_stride = GST_ROUND_UP_4 (dest_width * bpp); \
\
b_alpha = (gint) (src_alpha * 255); \
\
/* adjust src pointers for negative sizes */ \
if (xpos < 0) { \
src += -xpos * bpp; \
src_width -= -xpos; \
xpos = 0; \
} \
if (ypos < 0) { \
src += -ypos * src_stride; \
src_height -= -ypos; \
ypos = 0; \
} \
/* adjust width/height if the src is bigger than dest */ \
if (xpos + src_width > dest_width) { \
src_width = dest_width - xpos; \
} \
if (ypos + src_height > dest_height) { \
src_height = dest_height - ypos; \
} \
\
src_add = src_stride - (bpp * src_width); \
dest_add = dest_stride - (bpp * src_width); \
\
dest = dest + bpp * xpos + (ypos * dest_stride); \
/* If it's completely transparent... we just return */ \
if (G_UNLIKELY (src_alpha == 0.0)) { \
GST_INFO ("Fast copy (alpha == 0.0)"); \
return; \
} \
\
/* If it's completely opaque, we do a fast copy */ \
if (G_UNLIKELY (src_alpha == 1.0)) { \
GST_INFO ("Fast copy (alpha == 1.0)"); \
for (i = 0; i < src_height; i++) { \
memcpy (dest, src, bpp * src_width); \
src += src_stride; \
dest += dest_stride; \
} \
return; \
} \
\
/* we convert a square of 2x2 samples to generate 4 Luma and 2 chroma samples */ \
for (i = 0; i < src_height; i++) { \
for (j = 0; j < src_width; j++) { \
BLEND_MODE (dest[r], dest[g], dest[b], src[r], src[g], src[b], \
b_alpha, R, G, B); \
dest[r] = R; \
dest[g] = G; \
dest[b] = B; \
\
src += bpp; \
dest += bpp; \
} \
src += src_add; \
dest += dest_add; \
} \
} \
\
/* fill a buffer with a checkerboard pattern */ \
void \
gst_videomixer_fill_##name##_checker (guint8 * dest, gint width, gint height) \
{ \
gint i, j; \
static const int tab[] = { 80, 160, 80, 160 }; \
gint dest_add = GST_ROUND_UP_4 (width * bpp) - width * bpp; \
\
for (i = 0; i < height; i++) { \
for (j = 0; j < width; j++) { \
dest[r] = tab[((i & 0x8) >> 3) + ((j & 0x8) >> 3)]; /* red */ \
dest[g] = tab[((i & 0x8) >> 3) + ((j & 0x8) >> 3)]; /* green */ \
dest[b] = tab[((i & 0x8) >> 3) + ((j & 0x8) >> 3)]; /* blue */ \
dest += bpp; \
} \
dest += dest_add; \
} \
} \
\
void \
gst_videomixer_fill_##name##_color (guint8 * dest, gint width, gint height, \
gint colY, gint colU, gint colV) \
{ \
gint red, green, blue; \
gint i, j; \
gint dest_add = GST_ROUND_UP_4 (width * bpp) - width * bpp; \
\
red = CLAMP (1.164 * (colY - 16) + 1.596 * (colV - 128), 0, 255); \
green = \
CLAMP (1.164 * (colY - 16) - 0.813 * (colV - 128) - 0.391 * (colU - 128), \
0, 255); \
blue = CLAMP (1.164 * (colY - 16) + 2.018 * (colU - 128), 0, 255); \
\
for (i = 0; i < height; i++) { \
for (j = 0; j < width; j++) { \
dest[r] = red; \
dest[g] = green; \
dest[b] = blue; \
dest += bpp; \
} \
dest += dest_add; \
} \
}
CREATE_FUNCTIONS (rgb, 3, 0, 1, 2);
CREATE_FUNCTIONS (bgr, 3, 2, 1, 0);
CREATE_FUNCTIONS (xrgb, 4, 1, 2, 3);
CREATE_FUNCTIONS (xbgr, 4, 3, 2, 1);
CREATE_FUNCTIONS (rgbx, 4, 0, 1, 2);
CREATE_FUNCTIONS (bgrx, 4, 2, 1, 0);
......@@ -116,6 +116,43 @@ void gst_videomixer_blend_argb_argb (guint8 * src, gint xpos, gint ypos,
void gst_videomixer_fill_argb_checker (guint8 * dest, gint width, gint height);
void gst_videomixer_fill_argb_color (guint8 * dest, gint width, gint height,
gint colY, gint colU, gint colV);
/* RGB function definitions see file: blend_rgb.c */
void gst_videomixer_blend_rgb_rgb (guint8 * src, gint xpos, gint ypos,
gint src_width, gint src_height, gdouble src_alpha,
guint8 * dest, gint dest_width, gint dest_height);
void gst_videomixer_fill_rgb_checker (guint8 * dest, gint width, gint height);
void gst_videomixer_fill_rgb_color (guint8 * dest, gint width, gint height,
gint colY, gint colU, gint colV);
void gst_videomixer_blend_bgr_bgr (guint8 * src, gint xpos, gint ypos,
gint src_width, gint src_height, gdouble src_alpha,
guint8 * dest, gint dest_width, gint dest_height);
void gst_videomixer_fill_bgr_checker (guint8 * dest, gint width, gint height);
void gst_videomixer_fill_bgr_color (guint8 * dest, gint width, gint height,
gint colY, gint colU, gint colV);
void gst_videomixer_blend_xrgb_xrgb (guint8 * src, gint xpos, gint ypos,
gint src_width, gint src_height, gdouble src_alpha,
guint8 * dest, gint dest_width, gint dest_height);
void gst_videomixer_fill_xrgb_checker (guint8 * dest, gint width, gint height);
void gst_videomixer_fill_xrgb_color (guint8 * dest, gint width, gint height,
gint colY, gint colU, gint colV);
void gst_videomixer_blend_xbgr_xbgr (guint8 * src, gint xpos, gint ypos,
gint src_width, gint src_height, gdouble src_alpha,
guint8 * dest, gint dest_width, gint dest_height);
void gst_videomixer_fill_xbgr_checker (guint8 * dest, gint width, gint height);
void gst_videomixer_fill_xbgr_color (guint8 * dest, gint width, gint height,
gint colY, gint colU, gint colV);
void gst_videomixer_blend_rgbx_rgbx (guint8 * src, gint xpos, gint ypos,
gint src_width, gint src_height, gdouble src_alpha,
guint8 * dest, gint dest_width, gint dest_height);
void gst_videomixer_fill_rgbx_checker (guint8 * dest, gint width, gint height);
void gst_videomixer_fill_rgbx_color (guint8 * dest, gint width, gint height,
gint colY, gint colU, gint colV);
void gst_videomixer_blend_bgrx_bgrx (guint8 * src, gint xpos, gint ypos,
gint src_width, gint src_height, gdouble src_alpha,
guint8 * dest, gint dest_width, gint dest_height);
void gst_videomixer_fill_bgrx_checker (guint8 * dest, gint width, gint height);
void gst_videomixer_fill_bgrx_color (guint8 * dest, gint width, gint height,
gint colY, gint colU, gint colV);
/*I420 function definitions see file: blend_i420.c*/
void gst_videomixer_blend_i420_i420 (guint8 * src, gint xpos, gint ypos,
gint src_width, gint src_height, gdouble src_alpha,
......@@ -450,14 +487,20 @@ static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("AYUV") ";" GST_VIDEO_CAPS_BGRA ";"
GST_VIDEO_CAPS_ARGB ";" GST_VIDEO_CAPS_YUV ("I420"))
GST_VIDEO_CAPS_ARGB ";" GST_VIDEO_CAPS_YUV ("I420")
";" GST_VIDEO_CAPS_RGB ";" GST_VIDEO_CAPS_BGR
";" GST_VIDEO_CAPS_xRGB ";" GST_VIDEO_CAPS_xBGR
";" GST_VIDEO_CAPS_RGBx ";" GST_VIDEO_CAPS_BGRx)
);
static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink_%d",
GST_PAD_SINK,
GST_PAD_REQUEST,
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("AYUV") ";" GST_VIDEO_CAPS_BGRA ";"
GST_VIDEO_CAPS_ARGB ";" GST_VIDEO_CAPS_YUV ("I420"))
GST_VIDEO_CAPS_ARGB ";" GST_VIDEO_CAPS_YUV ("I420")
";" GST_VIDEO_CAPS_RGB ";" GST_VIDEO_CAPS_BGR
";" GST_VIDEO_CAPS_xRGB ";" GST_VIDEO_CAPS_xBGR
";" GST_VIDEO_CAPS_RGBx ";" GST_VIDEO_CAPS_BGRx)
);
static void gst_videomixer_finalize (GObject * object);
......@@ -940,6 +983,42 @@ gst_videomixer_setcaps (GstPad * pad, GstCaps * caps)
mixer->fill_color = gst_videomixer_fill_argb_color;
ret = TRUE;
break;
case GST_VIDEO_FORMAT_RGB:
mixer->blend = gst_videomixer_blend_rgb_rgb;
mixer->fill_checker = gst_videomixer_fill_rgb_checker;
mixer->fill_color = gst_videomixer_fill_rgb_color;
ret = TRUE;
break;
case GST_VIDEO_FORMAT_BGR:
mixer->blend = gst_videomixer_blend_bgr_bgr;
mixer->fill_checker = gst_videomixer_fill_bgr_checker;
mixer->fill_color = gst_videomixer_fill_bgr_color;
ret = TRUE;
break;
case GST_VIDEO_FORMAT_xRGB:
mixer->blend = gst_videomixer_blend_xrgb_xrgb;
mixer->fill_checker = gst_videomixer_fill_xrgb_checker;
mixer->fill_color = gst_videomixer_fill_xrgb_color;
ret = TRUE;
break;
case GST_VIDEO_FORMAT_xBGR:
mixer->blend = gst_videomixer_blend_xbgr_xbgr;
mixer->fill_checker = gst_videomixer_fill_xbgr_checker;
mixer->fill_color = gst_videomixer_fill_xbgr_color;
ret = TRUE;
break;
case GST_VIDEO_FORMAT_RGBx:
mixer->blend = gst_videomixer_blend_rgbx_rgbx;
mixer->fill_checker = gst_videomixer_fill_rgbx_checker;
mixer->fill_color = gst_videomixer_fill_rgbx_color;
ret = TRUE;
break;
case GST_VIDEO_FORMAT_BGRx:
mixer->blend = gst_videomixer_blend_bgrx_bgrx;
mixer->fill_checker = gst_videomixer_fill_bgrx_checker;
mixer->fill_color = gst_videomixer_fill_bgrx_color;
ret = TRUE;
break;
default:
break;
}
......
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