libavfilter/vsrc_testsrc.c
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00001 /*
00002  * Copyright (c) 2007 Nicolas George <nicolas.george@normalesup.org>
00003  * Copyright (c) 2011 Stefano Sabatini
00004  *
00005  * This file is part of FFmpeg.
00006  *
00007  * FFmpeg is free software; you can redistribute it and/or
00008  * modify it under the terms of the GNU Lesser General Public
00009  * License as published by the Free Software Foundation; either
00010  * version 2.1 of the License, or (at your option) any later version.
00011  *
00012  * FFmpeg is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00015  * Lesser General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU Lesser General Public
00018  * License along with FFmpeg; if not, write to the Free Software
00019  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00020  */
00021 
00033 #include <float.h>
00034 
00035 #include "libavutil/opt.h"
00036 #include "libavutil/intreadwrite.h"
00037 #include "libavutil/parseutils.h"
00038 #include "avfilter.h"
00039 
00040 typedef struct {
00041     const AVClass *class;
00042     int h, w;
00043     unsigned int nb_frame;
00044     AVRational time_base;
00045     int64_t pts, max_pts;
00046     char *size;                 
00047     char *rate;                 
00048     char *duration;             
00049     AVRational sar;             
00050     int nb_decimals;
00051 
00052     void (* fill_picture_fn)(AVFilterContext *ctx, AVFilterBufferRef *picref);
00053 
00054     /* only used by rgbtest */
00055     int rgba_map[4];
00056 } TestSourceContext;
00057 
00058 #define OFFSET(x) offsetof(TestSourceContext, x)
00059 
00060 static const AVOption testsrc_options[]= {
00061     { "size",     "set video size",     OFFSET(size),     AV_OPT_TYPE_STRING, {.str = "320x240"}, 0, 0 },
00062     { "s",        "set video size",     OFFSET(size),     AV_OPT_TYPE_STRING, {.str = "320x240"}, 0, 0 },
00063     { "rate",     "set video rate",     OFFSET(rate),     AV_OPT_TYPE_STRING, {.str = "25"},      0, 0 },
00064     { "r",        "set video rate",     OFFSET(rate),     AV_OPT_TYPE_STRING, {.str = "25"},      0, 0 },
00065     { "duration", "set video duration", OFFSET(duration), AV_OPT_TYPE_STRING, {.str = NULL},      0, 0 },
00066     { "d",        "set video duration", OFFSET(duration), AV_OPT_TYPE_STRING, {.str = NULL},      0, 0 },
00067     { "sar",      "set video sample aspect ratio", OFFSET(sar), AV_OPT_TYPE_RATIONAL, {.dbl= 1},  0, INT_MAX },
00068     { "decimals", "set number of decimals to show", OFFSET(nb_decimals), AV_OPT_TYPE_INT, {.dbl=0},  INT_MIN, INT_MAX },
00069     { "n",        "set number of decimals to show", OFFSET(nb_decimals), AV_OPT_TYPE_INT, {.dbl=0},  INT_MIN, INT_MAX },
00070     { NULL },
00071 };
00072 
00073 static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
00074 {
00075     TestSourceContext *test = ctx->priv;
00076     AVRational frame_rate_q;
00077     int64_t duration = -1;
00078     int ret = 0;
00079 
00080     av_opt_set_defaults(test);
00081 
00082     if ((ret = (av_set_options_string(test, args, "=", ":"))) < 0) {
00083         av_log(ctx, AV_LOG_ERROR, "Error parsing options string: '%s'\n", args);
00084         return ret;
00085     }
00086 
00087     if ((ret = av_parse_video_size(&test->w, &test->h, test->size)) < 0) {
00088         av_log(ctx, AV_LOG_ERROR, "Invalid frame size: '%s'\n", test->size);
00089         return ret;
00090     }
00091 
00092     if ((ret = av_parse_video_rate(&frame_rate_q, test->rate)) < 0 ||
00093         frame_rate_q.den <= 0 || frame_rate_q.num <= 0) {
00094         av_log(ctx, AV_LOG_ERROR, "Invalid frame rate: '%s'\n", test->rate);
00095         return ret;
00096     }
00097 
00098     if ((test->duration) && (ret = av_parse_time(&duration, test->duration, 1)) < 0) {
00099         av_log(ctx, AV_LOG_ERROR, "Invalid duration: '%s'\n", test->duration);
00100         return ret;
00101     }
00102 
00103     if (test->nb_decimals && strcmp(ctx->filter->name, "testsrc")) {
00104         av_log(ctx, AV_LOG_WARNING,
00105                "Option 'decimals' is ignored with source '%s'\n",
00106                ctx->filter->name);
00107     }
00108 
00109     test->time_base.num = frame_rate_q.den;
00110     test->time_base.den = frame_rate_q.num;
00111     test->max_pts = duration >= 0 ?
00112         av_rescale_q(duration, AV_TIME_BASE_Q, test->time_base) : -1;
00113     test->nb_frame = 0;
00114     test->pts = 0;
00115 
00116     av_log(ctx, AV_LOG_INFO, "size:%dx%d rate:%d/%d duration:%f sar:%d/%d\n",
00117            test->w, test->h, frame_rate_q.num, frame_rate_q.den,
00118            duration < 0 ? -1 : test->max_pts * av_q2d(test->time_base),
00119            test->sar.num, test->sar.den);
00120     return 0;
00121 }
00122 
00123 static int config_props(AVFilterLink *outlink)
00124 {
00125     TestSourceContext *test = outlink->src->priv;
00126 
00127     outlink->w = test->w;
00128     outlink->h = test->h;
00129     outlink->sample_aspect_ratio = test->sar;
00130     outlink->time_base = test->time_base;
00131 
00132     return 0;
00133 }
00134 
00135 static int request_frame(AVFilterLink *outlink)
00136 {
00137     TestSourceContext *test = outlink->src->priv;
00138     AVFilterBufferRef *picref;
00139 
00140     if (test->max_pts >= 0 && test->pts >= test->max_pts)
00141         return AVERROR_EOF;
00142     picref = avfilter_get_video_buffer(outlink, AV_PERM_WRITE,
00143                                        test->w, test->h);
00144     picref->pts = test->pts++;
00145     picref->pos = -1;
00146     picref->video->key_frame = 1;
00147     picref->video->interlaced = 0;
00148     picref->video->pict_type = AV_PICTURE_TYPE_I;
00149     picref->video->sample_aspect_ratio = test->sar;
00150     test->fill_picture_fn(outlink->src, picref);
00151     test->nb_frame++;
00152 
00153     avfilter_start_frame(outlink, avfilter_ref_buffer(picref, ~0));
00154     avfilter_draw_slice(outlink, 0, picref->video->h, 1);
00155     avfilter_end_frame(outlink);
00156     avfilter_unref_buffer(picref);
00157 
00158     return 0;
00159 }
00160 
00161 #if CONFIG_NULLSRC_FILTER
00162 
00163 static const char *nullsrc_get_name(void *ctx)
00164 {
00165     return "nullsrc";
00166 }
00167 
00168 static const AVClass nullsrc_class = {
00169     .class_name = "NullSourceContext",
00170     .item_name  = nullsrc_get_name,
00171     .option     = testsrc_options,
00172 };
00173 
00174 static void nullsrc_fill_picture(AVFilterContext *ctx, AVFilterBufferRef *picref) { }
00175 
00176 static av_cold int nullsrc_init(AVFilterContext *ctx, const char *args, void *opaque)
00177 {
00178     TestSourceContext *test = ctx->priv;
00179 
00180     test->class = &nullsrc_class;
00181     test->fill_picture_fn = nullsrc_fill_picture;
00182     return init(ctx, args, opaque);
00183 }
00184 
00185 AVFilter avfilter_vsrc_nullsrc = {
00186     .name        = "nullsrc",
00187     .description = NULL_IF_CONFIG_SMALL("Null video source, return unprocessed video frames."),
00188     .init       = nullsrc_init,
00189     .priv_size  = sizeof(TestSourceContext),
00190 
00191     .inputs    = (const AVFilterPad[]) {{ .name = NULL}},
00192     .outputs   = (const AVFilterPad[]) {{ .name = "default",
00193                                     .type = AVMEDIA_TYPE_VIDEO,
00194                                     .request_frame = request_frame,
00195                                     .config_props  = config_props, },
00196                                   { .name = NULL}},
00197 };
00198 
00199 #endif /* CONFIG_NULLSRC_FILTER */
00200 
00201 #if CONFIG_TESTSRC_FILTER
00202 
00203 static const char *testsrc_get_name(void *ctx)
00204 {
00205     return "testsrc";
00206 }
00207 
00208 static const AVClass testsrc_class = {
00209     .class_name = "TestSourceContext",
00210     .item_name  = testsrc_get_name,
00211     .option     = testsrc_options,
00212 };
00213 
00226 static void draw_rectangle(unsigned val, uint8_t *dst, int dst_linesize, unsigned segment_width,
00227                            unsigned x, unsigned y, unsigned w, unsigned h)
00228 {
00229     int i;
00230     int step = 3;
00231 
00232     dst += segment_width * (step * x + y * dst_linesize);
00233     w *= segment_width * step;
00234     h *= segment_width;
00235     for (i = 0; i < h; i++) {
00236         memset(dst, val, w);
00237         dst += dst_linesize;
00238     }
00239 }
00240 
00241 static void draw_digit(int digit, uint8_t *dst, unsigned dst_linesize,
00242                        unsigned segment_width)
00243 {
00244 #define TOP_HBAR        1
00245 #define MID_HBAR        2
00246 #define BOT_HBAR        4
00247 #define LEFT_TOP_VBAR   8
00248 #define LEFT_BOT_VBAR  16
00249 #define RIGHT_TOP_VBAR 32
00250 #define RIGHT_BOT_VBAR 64
00251     struct {
00252         int x, y, w, h;
00253     } segments[] = {
00254         { 1,  0, 5, 1 }, /* TOP_HBAR */
00255         { 1,  6, 5, 1 }, /* MID_HBAR */
00256         { 1, 12, 5, 1 }, /* BOT_HBAR */
00257         { 0,  1, 1, 5 }, /* LEFT_TOP_VBAR */
00258         { 0,  7, 1, 5 }, /* LEFT_BOT_VBAR */
00259         { 6,  1, 1, 5 }, /* RIGHT_TOP_VBAR */
00260         { 6,  7, 1, 5 }  /* RIGHT_BOT_VBAR */
00261     };
00262     static const unsigned char masks[10] = {
00263         /* 0 */ TOP_HBAR         |BOT_HBAR|LEFT_TOP_VBAR|LEFT_BOT_VBAR|RIGHT_TOP_VBAR|RIGHT_BOT_VBAR,
00264         /* 1 */                                                        RIGHT_TOP_VBAR|RIGHT_BOT_VBAR,
00265         /* 2 */ TOP_HBAR|MID_HBAR|BOT_HBAR|LEFT_BOT_VBAR                             |RIGHT_TOP_VBAR,
00266         /* 3 */ TOP_HBAR|MID_HBAR|BOT_HBAR                            |RIGHT_TOP_VBAR|RIGHT_BOT_VBAR,
00267         /* 4 */          MID_HBAR         |LEFT_TOP_VBAR              |RIGHT_TOP_VBAR|RIGHT_BOT_VBAR,
00268         /* 5 */ TOP_HBAR|BOT_HBAR|MID_HBAR|LEFT_TOP_VBAR                             |RIGHT_BOT_VBAR,
00269         /* 6 */ TOP_HBAR|BOT_HBAR|MID_HBAR|LEFT_TOP_VBAR|LEFT_BOT_VBAR               |RIGHT_BOT_VBAR,
00270         /* 7 */ TOP_HBAR                                              |RIGHT_TOP_VBAR|RIGHT_BOT_VBAR,
00271         /* 8 */ TOP_HBAR|BOT_HBAR|MID_HBAR|LEFT_TOP_VBAR|LEFT_BOT_VBAR|RIGHT_TOP_VBAR|RIGHT_BOT_VBAR,
00272         /* 9 */ TOP_HBAR|BOT_HBAR|MID_HBAR|LEFT_TOP_VBAR              |RIGHT_TOP_VBAR|RIGHT_BOT_VBAR,
00273     };
00274     unsigned mask = masks[digit];
00275     int i;
00276 
00277     draw_rectangle(0, dst, dst_linesize, segment_width, 0, 0, 8, 13);
00278     for (i = 0; i < FF_ARRAY_ELEMS(segments); i++)
00279         if (mask & (1<<i))
00280             draw_rectangle(255, dst, dst_linesize, segment_width,
00281                            segments[i].x, segments[i].y, segments[i].w, segments[i].h);
00282 }
00283 
00284 #define GRADIENT_SIZE (6 * 256)
00285 
00286 static void test_fill_picture(AVFilterContext *ctx, AVFilterBufferRef *picref)
00287 {
00288     TestSourceContext *test = ctx->priv;
00289     uint8_t *p, *p0;
00290     int x, y;
00291     int color, color_rest;
00292     int icolor;
00293     int radius;
00294     int quad0, quad;
00295     int dquad_x, dquad_y;
00296     int grad, dgrad, rgrad, drgrad;
00297     int seg_size;
00298     int second;
00299     int i;
00300     uint8_t *data = picref->data[0];
00301     int width  = picref->video->w;
00302     int height = picref->video->h;
00303 
00304     /* draw colored bars and circle */
00305     radius = (width + height) / 4;
00306     quad0 = width * width / 4 + height * height / 4 - radius * radius;
00307     dquad_y = 1 - height;
00308     p0 = data;
00309     for (y = 0; y < height; y++) {
00310         p = p0;
00311         color = 0;
00312         color_rest = 0;
00313         quad = quad0;
00314         dquad_x = 1 - width;
00315         for (x = 0; x < width; x++) {
00316             icolor = color;
00317             if (quad < 0)
00318                 icolor ^= 7;
00319             quad += dquad_x;
00320             dquad_x += 2;
00321             *(p++) = icolor & 1 ? 255 : 0;
00322             *(p++) = icolor & 2 ? 255 : 0;
00323             *(p++) = icolor & 4 ? 255 : 0;
00324             color_rest += 8;
00325             if (color_rest >= width) {
00326                 color_rest -= width;
00327                 color++;
00328             }
00329         }
00330         quad0 += dquad_y;
00331         dquad_y += 2;
00332         p0 += picref->linesize[0];
00333     }
00334 
00335     /* draw sliding color line */
00336     p0 = p = data + picref->linesize[0] * height * 3/4;
00337     grad = (256 * test->nb_frame * test->time_base.num / test->time_base.den) %
00338         GRADIENT_SIZE;
00339     rgrad = 0;
00340     dgrad = GRADIENT_SIZE / width;
00341     drgrad = GRADIENT_SIZE % width;
00342     for (x = 0; x < width; x++) {
00343         *(p++) =
00344             grad < 256 || grad >= 5 * 256 ? 255 :
00345             grad >= 2 * 256 && grad < 4 * 256 ? 0 :
00346             grad < 2 * 256 ? 2 * 256 - 1 - grad : grad - 4 * 256;
00347         *(p++) =
00348             grad >= 4 * 256 ? 0 :
00349             grad >= 1 * 256 && grad < 3 * 256 ? 255 :
00350             grad < 1 * 256 ? grad : 4 * 256 - 1 - grad;
00351         *(p++) =
00352             grad < 2 * 256 ? 0 :
00353             grad >= 3 * 256 && grad < 5 * 256 ? 255 :
00354             grad < 3 * 256 ? grad - 2 * 256 : 6 * 256 - 1 - grad;
00355         grad += dgrad;
00356         rgrad += drgrad;
00357         if (rgrad >= GRADIENT_SIZE) {
00358             grad++;
00359             rgrad -= GRADIENT_SIZE;
00360         }
00361         if (grad >= GRADIENT_SIZE)
00362             grad -= GRADIENT_SIZE;
00363     }
00364     p = p0;
00365     for (y = height / 8; y > 0; y--) {
00366         memcpy(p+picref->linesize[0], p, 3 * width);
00367         p += picref->linesize[0];
00368     }
00369 
00370     /* draw digits */
00371     seg_size = width / 80;
00372     if (seg_size >= 1 && height >= 13 * seg_size) {
00373         double time = av_q2d(test->time_base) * test->nb_frame *
00374                       pow(10, test->nb_decimals);
00375         if (time > INT_MAX)
00376             return;
00377         second = (int)time;
00378         x = width - (width - seg_size * 64) / 2;
00379         y = (height - seg_size * 13) / 2;
00380         p = data + (x*3 + y * picref->linesize[0]);
00381         for (i = 0; i < 8; i++) {
00382             p -= 3 * 8 * seg_size;
00383             draw_digit(second % 10, p, picref->linesize[0], seg_size);
00384             second /= 10;
00385             if (second == 0)
00386                 break;
00387         }
00388     }
00389 }
00390 
00391 static av_cold int test_init(AVFilterContext *ctx, const char *args, void *opaque)
00392 {
00393     TestSourceContext *test = ctx->priv;
00394 
00395     test->class = &testsrc_class;
00396     test->fill_picture_fn = test_fill_picture;
00397     return init(ctx, args, opaque);
00398 }
00399 
00400 static int test_query_formats(AVFilterContext *ctx)
00401 {
00402     static const enum PixelFormat pix_fmts[] = {
00403         PIX_FMT_RGB24, PIX_FMT_NONE
00404     };
00405     avfilter_set_common_pixel_formats(ctx, avfilter_make_format_list(pix_fmts));
00406     return 0;
00407 }
00408 
00409 AVFilter avfilter_vsrc_testsrc = {
00410     .name      = "testsrc",
00411     .description = NULL_IF_CONFIG_SMALL("Generate test pattern."),
00412     .priv_size = sizeof(TestSourceContext),
00413     .init      = test_init,
00414 
00415     .query_formats   = test_query_formats,
00416 
00417     .inputs    = (const AVFilterPad[]) {{ .name = NULL}},
00418 
00419     .outputs   = (const AVFilterPad[]) {{ .name = "default",
00420                                     .type = AVMEDIA_TYPE_VIDEO,
00421                                     .request_frame = request_frame,
00422                                     .config_props  = config_props, },
00423                                   { .name = NULL }},
00424 };
00425 
00426 #endif /* CONFIG_TESTSRC_FILTER */
00427 
00428 #if CONFIG_RGBTESTSRC_FILTER
00429 
00430 static const char *rgbtestsrc_get_name(void *ctx)
00431 {
00432     return "rgbtestsrc";
00433 }
00434 
00435 static const AVClass rgbtestsrc_class = {
00436     .class_name = "RGBTestSourceContext",
00437     .item_name  = rgbtestsrc_get_name,
00438     .option     = testsrc_options,
00439 };
00440 
00441 #define R 0
00442 #define G 1
00443 #define B 2
00444 #define A 3
00445 
00446 static void rgbtest_put_pixel(uint8_t *dst, int dst_linesize,
00447                               int x, int y, int r, int g, int b, enum PixelFormat fmt,
00448                               int rgba_map[4])
00449 {
00450     int32_t v;
00451     uint8_t *p;
00452 
00453     switch (fmt) {
00454     case PIX_FMT_BGR444: ((uint16_t*)(dst + y*dst_linesize))[x] = ((r >> 4) << 8) | ((g >> 4) << 4) | (b >> 4); break;
00455     case PIX_FMT_RGB444: ((uint16_t*)(dst + y*dst_linesize))[x] = ((b >> 4) << 8) | ((g >> 4) << 4) | (r >> 4); break;
00456     case PIX_FMT_BGR555: ((uint16_t*)(dst + y*dst_linesize))[x] = ((r>>3)<<10) | ((g>>3)<<5) | (b>>3); break;
00457     case PIX_FMT_RGB555: ((uint16_t*)(dst + y*dst_linesize))[x] = ((b>>3)<<10) | ((g>>3)<<5) | (r>>3); break;
00458     case PIX_FMT_BGR565: ((uint16_t*)(dst + y*dst_linesize))[x] = ((r>>3)<<11) | ((g>>2)<<5) | (b>>3); break;
00459     case PIX_FMT_RGB565: ((uint16_t*)(dst + y*dst_linesize))[x] = ((b>>3)<<11) | ((g>>2)<<5) | (r>>3); break;
00460     case PIX_FMT_RGB24:
00461     case PIX_FMT_BGR24:
00462         v = (r << (rgba_map[R]*8)) + (g << (rgba_map[G]*8)) + (b << (rgba_map[B]*8));
00463         p = dst + 3*x + y*dst_linesize;
00464         AV_WL24(p, v);
00465         break;
00466     case PIX_FMT_RGBA:
00467     case PIX_FMT_BGRA:
00468     case PIX_FMT_ARGB:
00469     case PIX_FMT_ABGR:
00470         v = (r << (rgba_map[R]*8)) + (g << (rgba_map[G]*8)) + (b << (rgba_map[B]*8)) + (255 << (rgba_map[A]*8));
00471         p = dst + 4*x + y*dst_linesize;
00472         AV_WL32(p, v);
00473         break;
00474     }
00475 }
00476 
00477 static void rgbtest_fill_picture(AVFilterContext *ctx, AVFilterBufferRef *picref)
00478 {
00479     TestSourceContext *test = ctx->priv;
00480     int x, y, w = picref->video->w, h = picref->video->h;
00481 
00482     for (y = 0; y < h; y++) {
00483          for (x = 0; x < picref->video->w; x++) {
00484              int c = 256*x/w;
00485              int r = 0, g = 0, b = 0;
00486 
00487              if      (3*y < h  ) r = c;
00488              else if (3*y < 2*h) g = c;
00489              else                b = c;
00490 
00491              rgbtest_put_pixel(picref->data[0], picref->linesize[0], x, y, r, g, b,
00492                                ctx->outputs[0]->format, test->rgba_map);
00493          }
00494      }
00495 }
00496 
00497 static av_cold int rgbtest_init(AVFilterContext *ctx, const char *args, void *opaque)
00498 {
00499     TestSourceContext *test = ctx->priv;
00500 
00501     test->class = &rgbtestsrc_class;
00502     test->fill_picture_fn = rgbtest_fill_picture;
00503     return init(ctx, args, opaque);
00504 }
00505 
00506 static int rgbtest_query_formats(AVFilterContext *ctx)
00507 {
00508     static const enum PixelFormat pix_fmts[] = {
00509         PIX_FMT_RGBA, PIX_FMT_ARGB, PIX_FMT_BGRA, PIX_FMT_ABGR,
00510         PIX_FMT_BGR24, PIX_FMT_RGB24,
00511         PIX_FMT_RGB444, PIX_FMT_BGR444,
00512         PIX_FMT_RGB565, PIX_FMT_BGR565,
00513         PIX_FMT_RGB555, PIX_FMT_BGR555,
00514         PIX_FMT_NONE
00515     };
00516     avfilter_set_common_pixel_formats(ctx, avfilter_make_format_list(pix_fmts));
00517     return 0;
00518 }
00519 
00520 static int rgbtest_config_props(AVFilterLink *outlink)
00521 {
00522     TestSourceContext *test = outlink->src->priv;
00523 
00524     switch (outlink->format) {
00525     case PIX_FMT_ARGB:  test->rgba_map[A] = 0; test->rgba_map[R] = 1; test->rgba_map[G] = 2; test->rgba_map[B] = 3; break;
00526     case PIX_FMT_ABGR:  test->rgba_map[A] = 0; test->rgba_map[B] = 1; test->rgba_map[G] = 2; test->rgba_map[R] = 3; break;
00527     case PIX_FMT_RGBA:
00528     case PIX_FMT_RGB24: test->rgba_map[R] = 0; test->rgba_map[G] = 1; test->rgba_map[B] = 2; test->rgba_map[A] = 3; break;
00529     case PIX_FMT_BGRA:
00530     case PIX_FMT_BGR24: test->rgba_map[B] = 0; test->rgba_map[G] = 1; test->rgba_map[R] = 2; test->rgba_map[A] = 3; break;
00531     }
00532 
00533     return config_props(outlink);
00534 }
00535 
00536 AVFilter avfilter_vsrc_rgbtestsrc = {
00537     .name      = "rgbtestsrc",
00538     .description = NULL_IF_CONFIG_SMALL("Generate RGB test pattern."),
00539     .priv_size = sizeof(TestSourceContext),
00540     .init      = rgbtest_init,
00541 
00542     .query_formats   = rgbtest_query_formats,
00543 
00544     .inputs    = (const AVFilterPad[]) {{ .name = NULL}},
00545 
00546     .outputs   = (const AVFilterPad[]) {{ .name = "default",
00547                                     .type = AVMEDIA_TYPE_VIDEO,
00548                                     .request_frame = request_frame,
00549                                     .config_props  = rgbtest_config_props, },
00550                                   { .name = NULL }},
00551 };
00552 
00553 #endif /* CONFIG_RGBTESTSRC_FILTER */