avfilter: add allrgb

Signed-off-by: Nicolas George <george@nsup.org>
Signed-off-by: Clément Bœsch <u@pkh.me>

Changelog

@@ -27,7 +27,7 @@ version <next>:
 - sidechaincompress audio filter
 - bitstream filter for converting HEVC from MP4 to Annex B
 - acrossfade audio filter
-- allyuv video source
+- allyuv and allrgb video sources
 - atadenoise video filter
 - OS X VideoToolbox support
 - aphasemeter filter

doc/filters.texi

@@ -11722,6 +11722,7 @@ ffplay -f lavfi life=s=300x200:mold=10:r=60:ratio=0.1:death_color=#C83232:life_c
 @end example
 @end itemize
 
+@anchor{allrgb}
 @anchor{allyuv}
 @anchor{color}
 @anchor{haldclutsrc}
@@ -11730,7 +11731,9 @@ ffplay -f lavfi life=s=300x200:mold=10:r=60:ratio=0.1:death_color=#C83232:life_c
 @anchor{smptebars}
 @anchor{smptehdbars}
 @anchor{testsrc}
-@section allyuv, color, haldclutsrc, nullsrc, rgbtestsrc, smptebars, smptehdbars, testsrc
+@section allrgb, allyuv, color, haldclutsrc, nullsrc, rgbtestsrc, smptebars, smptehdbars, testsrc
+
+The @code{allrgb} source returns frames of size 4096x4096 of all rgb colors.
 
 The @code{allyuv} source returns frames of size 4096x4096 of all yuv colors.
 

libavfilter/Makefile

@@ -241,6 +241,7 @@ OBJS-$(CONFIG_YADIF_FILTER)                  += vf_yadif.o
 OBJS-$(CONFIG_ZMQ_FILTER)                    += f_zmq.o
 OBJS-$(CONFIG_ZOOMPAN_FILTER)                += vf_zoompan.o
 
+OBJS-$(CONFIG_ALLRGB_FILTER)                 += vsrc_testsrc.o
 OBJS-$(CONFIG_ALLYUV_FILTER)                 += vsrc_testsrc.o
 OBJS-$(CONFIG_CELLAUTO_FILTER)               += vsrc_cellauto.o
 OBJS-$(CONFIG_COLOR_FILTER)                  += vsrc_testsrc.o

libavfilter/allfilters.c

@@ -256,6 +256,7 @@ void avfilter_register_all(void)
     REGISTER_FILTER(ZMQ,            zmq,            vf);
     REGISTER_FILTER(ZOOMPAN,        zoompan,        vf);
 
+    REGISTER_FILTER(ALLRGB,         allrgb,         vsrc);
     REGISTER_FILTER(ALLYUV,         allyuv,         vsrc);
     REGISTER_FILTER(CELLAUTO,       cellauto,       vsrc);
     REGISTER_FILTER(COLOR,          color,          vsrc);

libavfilter/version.h

@@ -30,7 +30,7 @@
 #include "libavutil/version.h"
 
 #define LIBAVFILTER_VERSION_MAJOR  5
-#define LIBAVFILTER_VERSION_MINOR  39
+#define LIBAVFILTER_VERSION_MINOR  40
 #define LIBAVFILTER_VERSION_MICRO 100
 
 #define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \

libavfilter/vsrc_testsrc.c

@@ -1170,3 +1170,84 @@ AVFilter ff_vsrc_allyuv = {
 };
 
 #endif /* CONFIG_ALLYUV_FILTER */
+
+#if CONFIG_ALLRGB_FILTER
+
+static const AVOption allrgb_options[] = {
+    COMMON_OPTIONS_NOSIZE
+    { NULL }
+};
+
+AVFILTER_DEFINE_CLASS(allrgb);
+
+static void allrgb_fill_picture(AVFilterContext *ctx, AVFrame *frame)
+{
+    unsigned x, y;
+    const int linesize = frame->linesize[0];
+    uint8_t *line = frame->data[0];
+
+    for (y = 0; y < 4096; y++) {
+        uint8_t *dst = line;
+
+        for (x = 0; x < 4096; x++) {
+            *dst++ = x;
+            *dst++ = y;
+            *dst++ = (x >> 8) | ((y >> 8) << 4);
+        }
+        line += linesize;
+    }
+}
+
+static av_cold int allrgb_init(AVFilterContext *ctx)
+{
+    TestSourceContext *test = ctx->priv;
+
+    test->w = test->h = 4096;
+    test->draw_once = 1;
+    test->fill_picture_fn = allrgb_fill_picture;
+    return init(ctx);
+}
+
+static int allrgb_config_props(AVFilterLink *outlink)
+{
+    TestSourceContext *test = outlink->src->priv;
+
+    ff_fill_rgba_map(test->rgba_map, outlink->format);
+    return config_props(outlink);
+}
+
+static int allrgb_query_formats(AVFilterContext *ctx)
+{
+    static const enum AVPixelFormat pix_fmts[] = {
+        AV_PIX_FMT_RGB24, AV_PIX_FMT_NONE
+    };
+
+    AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
+    if (!fmts_list)
+        return AVERROR(ENOMEM);
+    return ff_set_common_formats(ctx, fmts_list);
+}
+
+static const AVFilterPad avfilter_vsrc_allrgb_outputs[] = {
+    {
+        .name          = "default",
+        .type          = AVMEDIA_TYPE_VIDEO,
+        .request_frame = request_frame,
+        .config_props  = allrgb_config_props,
+    },
+    { NULL }
+};
+
+AVFilter ff_vsrc_allrgb = {
+    .name          = "allrgb",
+    .description   = NULL_IF_CONFIG_SMALL("Generate all RGB colors."),
+    .priv_size     = sizeof(TestSourceContext),
+    .priv_class    = &allrgb_class,
+    .init          = allrgb_init,
+    .uninit        = uninit,
+    .query_formats = allrgb_query_formats,
+    .inputs        = NULL,
+    .outputs       = avfilter_vsrc_allrgb_outputs,
+};
+
+#endif /* CONFIG_ALLRGB_FILTER */