From 0bf61ecfaf28bb72d2b4cdd20295e8677eef41ed Mon Sep 17 00:00:00 2001 From: Sebastian Dröge Date: Fri, 10 Jul 2009 19:34:41 +0200 Subject: videomixer: Add RGB, BGR, xRGB, RGBx, xBGR, BGRx support --- gst/videomixer/Makefile.am | 2 +- gst/videomixer/blend_rgb.c | 156 ++++++++++++++++++++++++++++++++++++++++++++ gst/videomixer/videomixer.c | 83 ++++++++++++++++++++++- 3 files changed, 238 insertions(+), 3 deletions(-) create mode 100644 gst/videomixer/blend_rgb.c (limited to 'gst/videomixer') diff --git a/gst/videomixer/Makefile.am b/gst/videomixer/Makefile.am index f3a5a102..7c6e1ded 100644 --- a/gst/videomixer/Makefile.am +++ b/gst/videomixer/Makefile.am @@ -1,6 +1,6 @@ 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) diff --git a/gst/videomixer/blend_rgb.c b/gst/videomixer/blend_rgb.c new file mode 100644 index 00000000..b580081f --- /dev/null +++ b/gst/videomixer/blend_rgb.c @@ -0,0 +1,156 @@ +/* + * Copyright (C) 2009 Alex Ugarte + * Copyright (C) 2009 Sebastian Dröge + * + * 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 +#include +#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); diff --git a/gst/videomixer/videomixer.c b/gst/videomixer/videomixer.c index cd463148..61409bf0 100644 --- a/gst/videomixer/videomixer.c +++ b/gst/videomixer/videomixer.c @@ -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; } -- cgit