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videobox: Always fill the complete frame if borders should be added

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This makes sure that we don't get any gaps between rectangles because
of chroma subsampling for example.
This commit is contained in:
Sebastian Dröge 2010-03-26 10:31:22 +01:00
parent 742f792ffb
commit 3bdd50c93b
2 changed files with 13 additions and 67 deletions
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78
gst/videobox/gstvideobox.c
View file

@ -122,7 +122,7 @@ static const gint cog_ycbcr_hdtv_to_ycbcr_sdtv_matrix_8bit[] = {
static void
fill_ayuv (GstVideoBoxFill fill_type, guint b_alpha, guint8 * dest,
gboolean sdtv, gint width, gint height, gint x, gint y, gint w, gint h)
gboolean sdtv, gint width, gint height)
{
guint32 empty_pixel;
@ -135,18 +135,7 @@ fill_ayuv (GstVideoBoxFill fill_type, guint b_alpha, guint8 * dest,
(yuv_hdtv_colors_Y[fill_type] << 16) |
(yuv_hdtv_colors_U[fill_type] << 8) | yuv_hdtv_colors_V[fill_type]);
if (width == w && height == h && x == 0 && y == 0) {
oil_splat_u32_ns ((guint32 *) dest, &empty_pixel, width * height);
} else {
gint i;
gint stride = 4 * width;
dest = dest + y * width * 4 + x * 4;
for (i = 0; i < h; i++) {
oil_splat_u32_ns ((guint32 *) dest, &empty_pixel, w);
dest += stride;
}
}
oil_splat_u32_ns ((guint32 *) dest, &empty_pixel, width * height);
}
static void
@ -383,7 +372,7 @@ copy_ayuv_i420 (guint i_alpha, guint8 * dest, gboolean dest_sdtv,
static void
fill_i420 (GstVideoBoxFill fill_type, guint b_alpha, guint8 * dest,
gboolean sdtv, gint width, gint height, gint x, gint y, gint w, gint h)
gboolean sdtv, gint width, gint height)
{
guint8 empty_pixel[3];
guint8 *destY, *destU, *destV;
@ -418,37 +407,9 @@ fill_i420 (GstVideoBoxFill fill_type, guint b_alpha, guint8 * dest,
heightUV =
gst_video_format_get_component_height (GST_VIDEO_FORMAT_I420, 1, height);
if (width == w && height == h && x == 0 && y == 0) {
oil_splat_u8_ns (destY, &empty_pixel[0], strideY * heightY);
oil_splat_u8_ns (destU, &empty_pixel[1], strideUV * heightUV);
oil_splat_u8_ns (destV, &empty_pixel[2], strideUV * heightUV);
} else {
gint i;
gint widthY, widthUV;
gint hY, hUV;
widthY = w;
widthUV = (w + 1) / 2;
hY = h;
hUV = (h + 1) / 2;
destY = destY + y * strideY + x;
destU = destU + (y / 2) * strideUV + x / 2;
destV = destV + (y / 2) * strideUV + x / 2;
for (i = 0; i < hY; i++) {
oil_splat_u8_ns (destY, &empty_pixel[0], widthY);
destY += strideY;
}
for (i = 0; i < hUV; i++) {
oil_splat_u8_ns (destU, &empty_pixel[1], widthUV);
oil_splat_u8_ns (destV, &empty_pixel[2], widthUV);
destU += strideUV;
destV += strideUV;
}
}
oil_splat_u8_ns (destY, &empty_pixel[0], strideY * heightY);
oil_splat_u8_ns (destU, &empty_pixel[1], strideUV * heightUV);
oil_splat_u8_ns (destV, &empty_pixel[2], strideUV * heightUV);
}
static void
@ -1383,8 +1344,7 @@ gst_video_box_process (GstVideoBox * video_box, const guint8 * src,
if (crop_h < 0 || crop_w < 0) {
video_box->fill (fill_type, b_alpha, dest, video_box->out_sdtv,
video_box->out_width, video_box->out_height, 0, 0, video_box->out_width,
video_box->out_height);
video_box->out_width, video_box->out_height);
} else if (bb == 0 && bt == 0 && br == 0 && bl == 0) {
video_box->copy (i_alpha, dest, video_box->out_sdtv, video_box->out_width,
video_box->out_height, 0, 0, src, video_box->in_sdtv,
@ -1393,11 +1353,13 @@ gst_video_box_process (GstVideoBox * video_box, const guint8 * src,
gint src_x = 0, src_y = 0;
gint dest_x = 0, dest_y = 0;
/* Fill everything if a border should be added somewhere */
if (bt < 0 || bb < 0 || br < 0 || bl < 0)
video_box->fill (fill_type, b_alpha, dest, video_box->out_sdtv,
video_box->out_width, video_box->out_height);
/* Top border */
if (bt < 0) {
video_box->fill (fill_type, b_alpha, dest, video_box->out_sdtv,
video_box->out_width, video_box->out_height, 0, 0,
video_box->out_width, -bt);
dest_y += -bt;
} else {
src_y += bt;
@ -1405,27 +1367,11 @@ gst_video_box_process (GstVideoBox * video_box, const guint8 * src,
/* Left border */
if (bl < 0) {
video_box->fill (fill_type, b_alpha, dest, video_box->out_sdtv,
video_box->out_width, video_box->out_height, 0, dest_y, -bl, crop_h);
dest_x += -bl;
} else {
src_x += bl;
}
/* Right border */
if (br < 0) {
video_box->fill (fill_type, b_alpha, dest, video_box->out_sdtv,
video_box->out_width, video_box->out_height,
video_box->out_width + br, dest_y, -br, crop_h);
}
/* Bottom border */
if (bb < 0) {
video_box->fill (fill_type, b_alpha, dest, video_box->out_sdtv,
video_box->out_width, video_box->out_height, 0, dest_y + crop_h,
video_box->out_width, -bb);
}
/* Frame */
video_box->copy (i_alpha, dest, video_box->out_sdtv, video_box->out_width,
video_box->out_height, dest_x, dest_y, src, video_box->in_sdtv,

2
gst/videobox/gstvideobox.h
View file

@ -75,7 +75,7 @@ struct _GstVideoBox
gboolean autocrop;
void (*fill) (GstVideoBoxFill fill_type, guint b_alpha, guint8 *dest, gboolean sdtv, gint width, gint height, gint x, gint y, gint w, gint h);
void (*fill) (GstVideoBoxFill fill_type, guint b_alpha, guint8 *dest, gboolean sdtv, gint width, gint height);
void (*copy) (guint i_alpha, guint8 *dest, gboolean dest_sdtv, gint dest_width, gint dest_height, gint dest_x, gint dest_y, const guint8 *src, gboolean src_sdtv, gint src_width, gint src_height, gint src_x, gint src_y, gint w, gint h);
};