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-rw-r--r--libavfilter/vf_drawbox.c73
1 files changed, 43 insertions, 30 deletions
diff --git a/libavfilter/vf_drawbox.c b/libavfilter/vf_drawbox.c
index e5311246c2..c575b2fa56 100644
--- a/libavfilter/vf_drawbox.c
+++ b/libavfilter/vf_drawbox.c
@@ -1,20 +1,20 @@
/*
* Copyright (c) 2008 Affine Systems, Inc (Michael Sullivan, Bobby Impollonia)
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
@@ -38,31 +38,36 @@ enum { Y, U, V, A };
typedef struct {
const AVClass *class;
- int x, y, w, h;
+ int x, y, w, h, thickness;
char *color_str;
unsigned char yuv_color[4];
+ int invert_color; ///< invert luma color
int vsub, hsub; ///< chroma subsampling
} DrawBoxContext;
static av_cold int init(AVFilterContext *ctx, const char *args)
{
- DrawBoxContext *drawbox= ctx->priv;
+ DrawBoxContext *drawbox = ctx->priv;
uint8_t rgba_color[4];
- if (av_parse_color(rgba_color, drawbox->color_str, -1, ctx) < 0)
+ if (!strcmp(drawbox->color_str, "invert"))
+ drawbox->invert_color = 1;
+ else if (av_parse_color(rgba_color, drawbox->color_str, -1, ctx) < 0)
return AVERROR(EINVAL);
- drawbox->yuv_color[Y] = RGB_TO_Y_CCIR(rgba_color[0], rgba_color[1], rgba_color[2]);
- drawbox->yuv_color[U] = RGB_TO_U_CCIR(rgba_color[0], rgba_color[1], rgba_color[2], 0);
- drawbox->yuv_color[V] = RGB_TO_V_CCIR(rgba_color[0], rgba_color[1], rgba_color[2], 0);
- drawbox->yuv_color[A] = rgba_color[3];
+ if (!drawbox->invert_color) {
+ drawbox->yuv_color[Y] = RGB_TO_Y_CCIR(rgba_color[0], rgba_color[1], rgba_color[2]);
+ drawbox->yuv_color[U] = RGB_TO_U_CCIR(rgba_color[0], rgba_color[1], rgba_color[2], 0);
+ drawbox->yuv_color[V] = RGB_TO_V_CCIR(rgba_color[0], rgba_color[1], rgba_color[2], 0);
+ drawbox->yuv_color[A] = rgba_color[3];
+ }
return 0;
}
static int query_formats(AVFilterContext *ctx)
{
- enum AVPixelFormat pix_fmts[] = {
+ static const enum AVPixelFormat pix_fmts[] = {
AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P,
AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
@@ -86,7 +91,7 @@ static int config_input(AVFilterLink *inlink)
if (drawbox->h == 0) drawbox->h = inlink->h;
av_log(inlink->dst, AV_LOG_VERBOSE, "x:%d y:%d w:%d h:%d color:0x%02X%02X%02X%02X\n",
- drawbox->w, drawbox->y, drawbox->w, drawbox->h,
+ drawbox->x, drawbox->y, drawbox->w, drawbox->h,
drawbox->yuv_color[Y], drawbox->yuv_color[U], drawbox->yuv_color[V], drawbox->yuv_color[A]);
return 0;
@@ -105,14 +110,21 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
row[plane] = frame->data[plane] +
frame->linesize[plane] * (y >> drawbox->vsub);
- for (x = FFMAX(xb, 0); x < (xb + drawbox->w) && x < frame->width; x++) {
- double alpha = (double)drawbox->yuv_color[A] / 255;
-
- if ((y - yb < 3) || (yb + drawbox->h - y < 4) ||
- (x - xb < 3) || (xb + drawbox->w - x < 4)) {
- row[0][x ] = (1 - alpha) * row[0][x ] + alpha * drawbox->yuv_color[Y];
- row[1][x >> drawbox->hsub] = (1 - alpha) * row[1][x >> drawbox->hsub] + alpha * drawbox->yuv_color[U];
- row[2][x >> drawbox->hsub] = (1 - alpha) * row[2][x >> drawbox->hsub] + alpha * drawbox->yuv_color[V];
+ if (drawbox->invert_color) {
+ for (x = FFMAX(xb, 0); x < xb + drawbox->w && x < frame->width; x++)
+ if ((y - yb < drawbox->thickness-1) || (yb + drawbox->h - y < drawbox->thickness) ||
+ (x - xb < drawbox->thickness-1) || (xb + drawbox->w - x < drawbox->thickness))
+ row[0][x] = 0xff - row[0][x];
+ } else {
+ for (x = FFMAX(xb, 0); x < xb + drawbox->w && x < frame->width; x++) {
+ double alpha = (double)drawbox->yuv_color[A] / 255;
+
+ if ((y - yb < drawbox->thickness-1) || (yb + drawbox->h - y < drawbox->thickness) ||
+ (x - xb < drawbox->thickness-1) || (xb + drawbox->w - x < drawbox->thickness)) {
+ row[0][x ] = (1 - alpha) * row[0][x ] + alpha * drawbox->yuv_color[Y];
+ row[1][x >> drawbox->hsub] = (1 - alpha) * row[1][x >> drawbox->hsub] + alpha * drawbox->yuv_color[U];
+ row[2][x >> drawbox->hsub] = (1 - alpha) * row[2][x >> drawbox->hsub] + alpha * drawbox->yuv_color[V];
+ }
}
}
}
@@ -121,22 +133,23 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
}
#define OFFSET(x) offsetof(DrawBoxContext, x)
-#define FLAGS AV_OPT_FLAG_VIDEO_PARAM
-static const AVOption options[] = {
+#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
+
+static const AVOption drawbox_options[] = {
{ "x", "Horizontal position of the left box edge", OFFSET(x), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, FLAGS },
{ "y", "Vertical position of the top box edge", OFFSET(y), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, FLAGS },
{ "width", "Width of the box", OFFSET(w), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FLAGS },
+ { "w", "Width of the box", OFFSET(w), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FLAGS },
{ "height", "Height of the box", OFFSET(h), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FLAGS },
- { "color", "Color of the box", OFFSET(color_str), AV_OPT_TYPE_STRING, { .str = "black" }, .flags = FLAGS },
+ { "h", "Height of the box", OFFSET(h), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FLAGS },
+ { "color", "Color of the box", OFFSET(color_str), AV_OPT_TYPE_STRING, { .str = "black" }, CHAR_MIN, CHAR_MAX, .flags = FLAGS },
+ { "c", "Color of the box", OFFSET(color_str), AV_OPT_TYPE_STRING, { .str = "black" }, CHAR_MIN, CHAR_MAX, .flags = FLAGS },
+ { "thickness", "set the box maximum thickness", OFFSET(thickness), AV_OPT_TYPE_INT, {.i64=4}, 0, INT_MAX, FLAGS },
+ { "t", "set the box maximum thickness", OFFSET(thickness), AV_OPT_TYPE_INT, {.i64=4}, 0, INT_MAX, FLAGS },
{ NULL },
};
-static const AVClass drawbox_class = {
- .class_name = "drawbox",
- .item_name = av_default_item_name,
- .option = options,
- .version = LIBAVUTIL_VERSION_INT,
-};
+AVFILTER_DEFINE_CLASS(drawbox);
static const AVFilterPad avfilter_vf_drawbox_inputs[] = {
{
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-28 15:29:08 +0000