[gst-cvs] gst-plugins-base: textoverlay: Add support for AYUV
Sebastian Dröge
slomo at kemper.freedesktop.org
Wed Sep 1 08:52:49 PDT 2010
Module: gst-plugins-base
Branch: master
Commit: ca24ece36ba8986acfafbb33e4e430b47b54d4da
URL: http://cgit.freedesktop.org/gstreamer/gst-plugins-base/commit/?id=ca24ece36ba8986acfafbb33e4e430b47b54d4da
Author: Sebastian Dröge <sebastian.droege at collabora.co.uk>
Date: Wed Sep 1 17:52:31 2010 +0200
textoverlay: Add support for AYUV
---
ext/pango/gsttextoverlay.c | 90 ++++++++++++++++++++++++++++++++++++++++----
1 files changed, 82 insertions(+), 8 deletions(-)
diff --git a/ext/pango/gsttextoverlay.c b/ext/pango/gsttextoverlay.c
index aa492e9..0dd8a10 100644
--- a/ext/pango/gsttextoverlay.c
+++ b/ext/pango/gsttextoverlay.c
@@ -186,7 +186,8 @@ static GstStaticPadTemplate src_template_factory =
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_BGRx ";"
- GST_VIDEO_CAPS_xRGB ";" GST_VIDEO_CAPS_YUV ("{I420, UYVY, NV12, NV21}"))
+ GST_VIDEO_CAPS_xRGB ";"
+ GST_VIDEO_CAPS_YUV ("{AYUV, I420, UYVY, NV12, NV21}"))
);
static GstStaticPadTemplate video_sink_template_factory =
@@ -194,7 +195,8 @@ static GstStaticPadTemplate video_sink_template_factory =
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_BGRx ";"
- GST_VIDEO_CAPS_xRGB ";" GST_VIDEO_CAPS_YUV ("{I420, UYVY, NV12, NV21}"))
+ GST_VIDEO_CAPS_xRGB ";"
+ GST_VIDEO_CAPS_YUV ("{AYUV, I420, UYVY, NV12, NV21}"))
);
static GstStaticPadTemplate text_sink_template_factory =
@@ -1360,7 +1362,7 @@ gst_text_overlay_render_pangocairo (GstTextOverlay * overlay,
#define BOX_YPAD 6
static inline void
-gst_text_overlay_shade_Y (GstTextOverlay * overlay, guchar * dest,
+gst_text_overlay_shade_planar_Y (GstTextOverlay * overlay, guchar * dest,
gint x0, gint x1, gint y0, gint y1)
{
gint i, j, dest_stride;
@@ -1384,12 +1386,18 @@ gst_text_overlay_shade_Y (GstTextOverlay * overlay, guchar * dest,
}
static inline void
-gst_text_overlay_shade_UYVY_y (GstTextOverlay * overlay, guchar * dest,
+gst_text_overlay_shade_packed_Y (GstTextOverlay * overlay, guchar * dest,
gint x0, gint x1, gint y0, gint y1)
{
gint i, j;
- guint dest_stride = gst_video_format_get_row_stride (GST_VIDEO_FORMAT_UYVY, 0,
+ guint dest_stride, pixel_stride, component_offset;
+
+ dest_stride = gst_video_format_get_row_stride (overlay->format, 0,
overlay->width);
+ pixel_stride = gst_video_format_get_pixel_stride (overlay->format, 0);
+ component_offset =
+ gst_video_format_get_component_offset (overlay->format, 0, overlay->width,
+ overlay->height);
x0 = CLAMP (x0 - BOX_XPAD, 0, overlay->width);
x1 = CLAMP (x1 + BOX_XPAD, 0, overlay->width);
@@ -1397,12 +1405,22 @@ gst_text_overlay_shade_UYVY_y (GstTextOverlay * overlay, guchar * dest,
y0 = CLAMP (y0 - BOX_YPAD, 0, overlay->height);
y1 = CLAMP (y1 + BOX_YPAD, 0, overlay->height);
+ if (x0 != 0)
+ x0 = gst_video_format_get_component_width (overlay->format, 0, x0);
+ if (x1 != 0)
+ x1 = gst_video_format_get_component_width (overlay->format, 0, x1);
+
+ if (y0 != 0)
+ y0 = gst_video_format_get_component_height (overlay->format, 0, y0);
+ if (y1 != 0)
+ y1 = gst_video_format_get_component_height (overlay->format, 0, y1);
+
for (i = y0; i < y1; i++) {
for (j = x0; j < x1; j++) {
gint y;
gint y_pos;
- y_pos = (i * dest_stride) + j * 2 + 1;
+ y_pos = (i * dest_stride) + j * pixel_stride + component_offset;
y = dest[y_pos] + overlay->shading_value;
dest[y_pos] = CLAMP (y, 0, 255);
@@ -1585,6 +1603,57 @@ gst_text_overlay_blit_UYVY (GstTextOverlay * overlay,
}
}
+static inline void
+gst_text_overlay_blit_AYUV (GstTextOverlay * overlay,
+ guint8 * rgb_pixels, gint xpos, gint ypos)
+{
+ int a, r, g, b;
+ int y, u, v;
+ int i, j;
+ int h, w;
+ guchar *pimage, *dest;
+
+ w = overlay->image_width;
+ h = overlay->image_height;
+
+ if (xpos < 0) {
+ xpos = 0;
+ }
+
+ if (xpos + w > overlay->width) {
+ w = overlay->width - xpos;
+ }
+
+ if (ypos + h > overlay->height) {
+ h = overlay->height - ypos;
+ }
+
+ for (i = 0; i < h; i++) {
+ pimage = overlay->text_image + i * overlay->image_width * 4;
+ dest = rgb_pixels + (i + ypos) * 4 * overlay->width + xpos * 4;
+ for (j = 0; j < w; j++) {
+ a = pimage[CAIRO_ARGB_A];
+ b = pimage[CAIRO_ARGB_B];
+ g = pimage[CAIRO_ARGB_G];
+ r = pimage[CAIRO_ARGB_R];
+
+ CAIRO_UNPREMULTIPLY (a, r, g, b);
+
+ COMP_Y (y, r, g, b);
+ COMP_U (u, r, g, b);
+ COMP_V (v, r, g, b);
+
+ a = (a * dest[0] + 128) >> 8;
+ BLEND (dest[1], a, y, dest[1]);
+ BLEND (dest[2], a, u, dest[2]);
+ BLEND (dest[3], a, v, dest[3]);
+
+ pimage += 4;
+ dest += 4;
+ }
+ }
+}
+
#define xRGB_BLIT_FUNCTION(name, R, G, B) \
static inline void \
gst_text_overlay_blit_##name (GstTextOverlay * overlay, \
@@ -1738,12 +1807,13 @@ gst_text_overlay_push_frame (GstTextOverlay * overlay, GstBuffer * video_frame)
case GST_VIDEO_FORMAT_I420:
case GST_VIDEO_FORMAT_NV12:
case GST_VIDEO_FORMAT_NV21:
- gst_text_overlay_shade_Y (overlay,
+ gst_text_overlay_shade_planar_Y (overlay,
GST_BUFFER_DATA (video_frame), xpos, xpos + overlay->image_width,
ypos, ypos + overlay->image_height);
break;
+ case GST_VIDEO_FORMAT_AYUV:
case GST_VIDEO_FORMAT_UYVY:
- gst_text_overlay_shade_UYVY_y (overlay,
+ gst_text_overlay_shade_packed_Y (overlay,
GST_BUFFER_DATA (video_frame), xpos, xpos + overlay->image_width,
ypos, ypos + overlay->image_height);
break;
@@ -1780,6 +1850,10 @@ gst_text_overlay_push_frame (GstTextOverlay * overlay, GstBuffer * video_frame)
gst_text_overlay_blit_UYVY (overlay,
GST_BUFFER_DATA (video_frame), xpos, ypos);
break;
+ case GST_VIDEO_FORMAT_AYUV:
+ gst_text_overlay_blit_AYUV (overlay,
+ GST_BUFFER_DATA (video_frame), xpos, ypos);
+ break;
case GST_VIDEO_FORMAT_BGRx:
gst_text_overlay_blit_BGRx (overlay,
GST_BUFFER_DATA (video_frame), xpos, ypos);
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