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lavfi: add smptebars source 

Patch readapted by Stefano Sabatini, color values proposed by Tim
Nicholson <nichot20@yahoo.com>.

Address trac ticket #1462.

See thread:
Subject: [FFmpeg-devel] [PATCH] smptebars filter
Date: Wed, 20 Jun 2012 01:54:58 +0000

Signed-off-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Stefano Sabatini <stefasab@gmail.com>
This commit is contained in:
Paul B Mahol 2012-06-20 01:54:58 +00:00 committed by Stefano Sabatini
parent 13bbc464ed
commit 13c5069187
6 changed files with 140 additions and 3 deletions
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1
Changelog
View File

@ -42,6 +42,7 @@ version next:
- bitmap subtitles in filters (experimental and temporary)
- MP2 encoding via TwoLAME
- bmp parser
- smptebars source
version 0.11:

5
doc/filters.texi
View File

@ -3918,7 +3918,7 @@ ffplay -f lavfi life=s=300x200:mold=10:r=60:ratio=0.1:death_color=#C83232:life_c
@end example
@end itemize
@section color, nullsrc, rgbtestsrc, testsrc
@section color, nullsrc, rgbtestsrc, smptebars, testsrc
The @code{color} source provides an uniformly colored input.
@ -3930,6 +3930,9 @@ The @code{rgbtestsrc} source generates an RGB test pattern useful for
detecting RGB vs BGR issues. You should see a red, green and blue
stripe from top to bottom.
The @code{smptebars} source generates a color bars pattern, based on
the SMPTE Engineering Guideline EG 1-1990.
The @code{testsrc} source generates a test video pattern, showing a
color pattern, a scrolling gradient and a timestamp. This is mainly
intended for testing purposes.

1
libavfilter/Makefile
View File

@ -139,6 +139,7 @@ OBJS-$(CONFIG_MANDELBROT_FILTER) += vsrc_mandelbrot.o
OBJS-$(CONFIG_MPTESTSRC_FILTER) += vsrc_mptestsrc.o
OBJS-$(CONFIG_NULLSRC_FILTER) += vsrc_testsrc.o
OBJS-$(CONFIG_RGBTESTSRC_FILTER) += vsrc_testsrc.o
OBJS-$(CONFIG_SMPTEBARS_FILTER) += vsrc_testsrc.o
OBJS-$(CONFIG_TESTSRC_FILTER) += vsrc_testsrc.o
OBJS-$(CONFIG_BUFFERSINK_FILTER) += sink_buffer.o

1
libavfilter/allfilters.c
View File

@ -129,6 +129,7 @@ void avfilter_register_all(void)
REGISTER_FILTER (MPTESTSRC, mptestsrc, vsrc);
REGISTER_FILTER (NULLSRC, nullsrc, vsrc);
REGISTER_FILTER (RGBTESTSRC, rgbtestsrc, vsrc);
REGISTER_FILTER (SMPTEBARS, smptebars, vsrc);
REGISTER_FILTER (TESTSRC, testsrc, vsrc);
REGISTER_FILTER (BUFFERSINK, buffersink, vsink);

4
libavfilter/version.h
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@ -29,8 +29,8 @@
#include "libavutil/avutil.h"
#define LIBAVFILTER_VERSION_MAJOR 3
#define LIBAVFILTER_VERSION_MINOR 5
#define LIBAVFILTER_VERSION_MICRO 102
#define LIBAVFILTER_VERSION_MINOR 6
#define LIBAVFILTER_VERSION_MICRO 100
#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
LIBAVFILTER_VERSION_MINOR, \

131
libavfilter/vsrc_testsrc.c
View File

@ -1,6 +1,7 @@
/*
* Copyright (c) 2007 Nicolas George <nicolas.george@normalesup.org>
* Copyright (c) 2011 Stefano Sabatini
* Copyright (c) 2012 Paul B Mahol
*
* This file is part of FFmpeg.
*
@ -28,6 +29,8 @@
*
* rgbtestsrc is ported from MPlayer libmpcodecs/vf_rgbtest.c by
* Michael Niedermayer.
*
* smptebars is by Paul B Mahol.
*/
#include <float.h>
@ -646,3 +649,131 @@ AVFilter avfilter_vsrc_rgbtestsrc = {
};
#endif /* CONFIG_RGBTESTSRC_FILTER */
#if CONFIG_SMPTEBARS_FILTER
#define smptebars_options options
AVFILTER_DEFINE_CLASS(smptebars);
static const uint8_t rainbow[7][4] = {
{ 191, 191, 191, 255 }, /* gray */
{ 191, 191, 0, 255 }, /* yellow */
{ 0, 191, 191, 255 }, /* cyan */
{ 0, 191, 0, 255 }, /* green */
{ 191, 0, 191, 255 }, /* magenta */
{ 191, 0, 0, 255 }, /* red */
{ 0, 0, 191, 255 }, /* blue */
};
static const uint8_t wobnair[7][4] = {
{ 0, 0, 191, 255 }, /* blue */
{ 19, 19, 19, 255 }, /* 7.5% intensity black */
{ 191, 0, 191, 255 }, /* magenta */
{ 19, 19, 19, 255 }, /* 7.5% intensity black */
{ 0, 191, 191, 255 }, /* cyan */
{ 19, 19, 19, 255 }, /* 7.5% intensity black */
{ 191, 191, 191, 255 }, /* gray */
};
static const uint8_t white[4] = { 255, 255, 255, 255 };
static const uint8_t black[4] = { 19, 19, 19, 255 }; /* 7.5% intensity black */
/* pluge pulses */
static const uint8_t neg4ire[4] = { 9, 9, 9, 255 }; /* 3.5% intensity black */
static const uint8_t pos4ire[4] = { 29, 29, 29, 255 }; /* 11.5% intensity black */
/* fudged Q/-I */
static const uint8_t i_pixel[4] = { 0, 68, 130, 255 };
static const uint8_t q_pixel[4] = { 67, 0, 130, 255 };
static void smptebars_fill_picture(AVFilterContext *ctx, AVFilterBufferRef *picref)
{
TestSourceContext *test = ctx->priv;
FFDrawColor color;
int r_w, r_h, w_h, p_w, p_h, i, x = 0;
r_w = (test->w + 6) / 7;
r_h = test->h * 2 / 3;
w_h = test->h * 3 / 4 - r_h;
p_w = r_w * 5 / 4;
p_h = test->h - w_h - r_h;
#define DRAW_COLOR(rgba, x, y, w, h) \
ff_draw_color(&test->draw, &color, rgba); \
ff_fill_rectangle(&test->draw, &color, \
picref->data, picref->linesize, x, y, w, h) \
for (i = 0; i < 7; i++) {
DRAW_COLOR(rainbow[i], x, 0, FFMIN(r_w, test->w - x), r_h);
DRAW_COLOR(wobnair[i], x, r_h, FFMIN(r_w, test->w - x), w_h);
x += r_w;
}
x = 0;
DRAW_COLOR(i_pixel, x, r_h + w_h, p_w, p_h);
x += p_w;
DRAW_COLOR(white, x, r_h + w_h, p_w, p_h);
x += p_w;
DRAW_COLOR(q_pixel, x, r_h + w_h, p_w, p_h);
x += p_w;
DRAW_COLOR(black, x, r_h + w_h, 5 * r_w - x, p_h);
x += 5 * r_w - x;
DRAW_COLOR(neg4ire, x, r_h + w_h, r_w / 3, p_h);
x += r_w / 3;
DRAW_COLOR(black, x, r_h + w_h, r_w / 3, p_h);
x += r_w / 3;
DRAW_COLOR(pos4ire, x, r_h + w_h, r_w / 3, p_h);
x += r_w / 3;
DRAW_COLOR(black, x, r_h + w_h, test->w - x, p_h);
}
static av_cold int smptebars_init(AVFilterContext *ctx, const char *args)
{
TestSourceContext *test = ctx->priv;
test->class = &smptebars_class;
test->fill_picture_fn = smptebars_fill_picture;
test->draw_once = 1;
return init(ctx, args);
}
static int smptebars_query_formats(AVFilterContext *ctx)
{
ff_set_common_formats(ctx, ff_draw_supported_pixel_formats(0));
return 0;
}
static int smptebars_config_props(AVFilterLink *outlink)
{
AVFilterContext *ctx = outlink->src;
TestSourceContext *test = ctx->priv;
ff_draw_init(&test->draw, outlink->format, 0);
return config_props(outlink);
}
AVFilter avfilter_vsrc_smptebars = {
.name = "smptebars",
.description = NULL_IF_CONFIG_SMALL("Generate SMPTE color bars."),
.priv_size = sizeof(TestSourceContext),
.init = smptebars_init,
.uninit = uninit,
.query_formats = smptebars_query_formats,
.inputs = (const AVFilterPad[]) {
{ .name = NULL }
},
.outputs = (const AVFilterPad[]) {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.request_frame = request_frame,
.config_props = smptebars_config_props,
},
{ .name = NULL }
},
};
#endif /* CONFIG_SMPTEBARS_FILTER */