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  1. /*
  2.  * Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at>
  3.  *
  4.  * This file is part of FFmpeg.
  5.  *
  6.  * FFmpeg is free software; you can redistribute it and/or modify
  7.  * it under the terms of the GNU General Public License as published by
  8.  * the Free Software Foundation; either version 2 of the License, or
  9.  * (at your option) any later version.
  10.  *
  11.  * FFmpeg is distributed in the hope that it will be useful,
  12.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14.  * GNU General Public License for more details.
  15.  *
  16.  * You should have received a copy of the GNU General Public License along
  17.  * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
  18.  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19.  */
  20.  
  21. /**
  22.  * @file
  23.  * MP test source, ported from MPlayer libmpcodecs/vf_test.c
  24.  */
  25.  
  26. #include "libavutil/avstring.h"
  27. #include "libavutil/opt.h"
  28. #include "libavutil/parseutils.h"
  29. #include "libavutil/pixdesc.h"
  30. #include "avfilter.h"
  31. #include "internal.h"
  32. #include "formats.h"
  33. #include "video.h"
  34.  
  35. #define WIDTH 512
  36. #define HEIGHT 512
  37.  
  38. enum test_type {
  39.     TEST_DC_LUMA,
  40.     TEST_DC_CHROMA,
  41.     TEST_FREQ_LUMA,
  42.     TEST_FREQ_CHROMA,
  43.     TEST_AMP_LUMA,
  44.     TEST_AMP_CHROMA,
  45.     TEST_CBP,
  46.     TEST_MV,
  47.     TEST_RING1,
  48.     TEST_RING2,
  49.     TEST_ALL,
  50.     TEST_NB
  51. };
  52.  
  53. typedef struct MPTestContext {
  54.     const AVClass *class;
  55.     AVRational frame_rate;
  56.     int64_t pts, max_pts, duration;
  57.     int hsub, vsub;
  58.     enum test_type test;
  59. } MPTestContext;
  60.  
  61. #define OFFSET(x) offsetof(MPTestContext, x)
  62. #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
  63. static const AVOption mptestsrc_options[]= {
  64.     { "rate",     "set video rate",     OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, 0, FLAGS },
  65.     { "r",        "set video rate",     OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, 0, FLAGS },
  66.     { "duration", "set video duration", OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64 = -1}, -1, INT64_MAX, FLAGS },
  67.     { "d",        "set video duration", OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64 = -1}, -1, INT64_MAX, FLAGS },
  68.  
  69.     { "test", "set test to perform", OFFSET(test),  AV_OPT_TYPE_INT,   {.i64=TEST_ALL}, 0, INT_MAX, FLAGS, "test" },
  70.     { "t",    "set test to perform", OFFSET(test),  AV_OPT_TYPE_INT,   {.i64=TEST_ALL}, 0, INT_MAX, FLAGS, "test" },
  71.         { "dc_luma",     "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_DC_LUMA},     INT_MIN, INT_MAX, FLAGS, "test" },
  72.         { "dc_chroma",   "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_DC_CHROMA},   INT_MIN, INT_MAX, FLAGS, "test" },
  73.         { "freq_luma",   "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_FREQ_LUMA},   INT_MIN, INT_MAX, FLAGS, "test" },
  74.         { "freq_chroma", "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_FREQ_CHROMA}, INT_MIN, INT_MAX, FLAGS, "test" },
  75.         { "amp_luma",    "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_AMP_LUMA},    INT_MIN, INT_MAX, FLAGS, "test" },
  76.         { "amp_chroma",  "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_AMP_CHROMA},  INT_MIN, INT_MAX, FLAGS, "test" },
  77.         { "cbp",         "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_CBP},         INT_MIN, INT_MAX, FLAGS, "test" },
  78.         { "mv",          "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_MV},          INT_MIN, INT_MAX, FLAGS, "test" },
  79.         { "ring1",       "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_RING1},       INT_MIN, INT_MAX, FLAGS, "test" },
  80.         { "ring2",       "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_RING2},       INT_MIN, INT_MAX, FLAGS, "test" },
  81.         { "all",         "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_ALL},         INT_MIN, INT_MAX, FLAGS, "test" },
  82.     { NULL }
  83. };
  84.  
  85. AVFILTER_DEFINE_CLASS(mptestsrc);
  86.  
  87. static double c[64];
  88.  
  89. static void init_idct(void)
  90. {
  91.     int i, j;
  92.  
  93.     for (i = 0; i < 8; i++) {
  94.         double s = i == 0 ? sqrt(0.125) : 0.5;
  95.  
  96.         for (j = 0; j < 8; j++)
  97.             c[i*8+j] = s*cos((M_PI/8.0)*i*(j+0.5));
  98.     }
  99. }
  100.  
  101. static void idct(uint8_t *dst, int dst_linesize, int src[64])
  102. {
  103.     int i, j, k;
  104.     double tmp[64];
  105.  
  106.     for (i = 0; i < 8; i++) {
  107.         for (j = 0; j < 8; j++) {
  108.             double sum = 0.0;
  109.  
  110.             for (k = 0; k < 8; k++)
  111.                 sum += c[k*8+j] * src[8*i+k];
  112.  
  113.             tmp[8*i+j] = sum;
  114.         }
  115.     }
  116.  
  117.     for (j = 0; j < 8; j++) {
  118.         for (i = 0; i < 8; i++) {
  119.             double sum = 0.0;
  120.  
  121.             for (k = 0; k < 8; k++)
  122.                 sum += c[k*8+i]*tmp[8*k+j];
  123.  
  124.             dst[dst_linesize*i + j] = av_clip((int)floor(sum+0.5), 0, 255);
  125.         }
  126.     }
  127. }
  128.  
  129. static void draw_dc(uint8_t *dst, int dst_linesize, int color, int w, int h)
  130. {
  131.     int x, y;
  132.  
  133.     for (y = 0; y < h; y++)
  134.         for (x = 0; x < w; x++)
  135.             dst[x + y*dst_linesize] = color;
  136. }
  137.  
  138. static void draw_basis(uint8_t *dst, int dst_linesize, int amp, int freq, int dc)
  139. {
  140.     int src[64];
  141.  
  142.     memset(src, 0, 64*sizeof(int));
  143.     src[0] = dc;
  144.     if (amp)
  145.         src[freq] = amp;
  146.     idct(dst, dst_linesize, src);
  147. }
  148.  
  149. static void draw_cbp(uint8_t *dst[3], int dst_linesize[3], int cbp, int amp, int dc)
  150. {
  151.     if (cbp&1)  draw_basis(dst[0]                    , dst_linesize[0], amp, 1, dc);
  152.     if (cbp&2)  draw_basis(dst[0]+8                  , dst_linesize[0], amp, 1, dc);
  153.     if (cbp&4)  draw_basis(dst[0]+  8*dst_linesize[0], dst_linesize[0], amp, 1, dc);
  154.     if (cbp&8)  draw_basis(dst[0]+8+8*dst_linesize[0], dst_linesize[0], amp, 1, dc);
  155.     if (cbp&16) draw_basis(dst[1]                    , dst_linesize[1], amp, 1, dc);
  156.     if (cbp&32) draw_basis(dst[2]                    , dst_linesize[2], amp, 1, dc);
  157. }
  158.  
  159. static void dc_test(uint8_t *dst, int dst_linesize, int w, int h, int off)
  160. {
  161.     const int step = FFMAX(256/(w*h/256), 1);
  162.     int x, y, color = off;
  163.  
  164.     for (y = 0; y < h; y += 16) {
  165.         for (x = 0; x < w; x += 16) {
  166.             draw_dc(dst + x + y*dst_linesize, dst_linesize, color, 8, 8);
  167.             color += step;
  168.         }
  169.     }
  170. }
  171.  
  172. static void freq_test(uint8_t *dst, int dst_linesize, int off)
  173. {
  174.     int x, y, freq = 0;
  175.  
  176.     for (y = 0; y < 8*16; y += 16) {
  177.         for (x = 0; x < 8*16; x += 16) {
  178.             draw_basis(dst + x + y*dst_linesize, dst_linesize, 4*(96+off), freq, 128*8);
  179.             freq++;
  180.         }
  181.     }
  182. }
  183.  
  184. static void amp_test(uint8_t *dst, int dst_linesize, int off)
  185. {
  186.     int x, y, amp = off;
  187.  
  188.     for (y = 0; y < 16*16; y += 16) {
  189.         for (x = 0; x < 16*16; x += 16) {
  190.             draw_basis(dst + x + y*dst_linesize, dst_linesize, 4*amp, 1, 128*8);
  191.             amp++;
  192.         }
  193.     }
  194. }
  195.  
  196. static void cbp_test(uint8_t *dst[3], int dst_linesize[3], int off)
  197. {
  198.     int x, y, cbp = 0;
  199.  
  200.     for (y = 0; y < 16*8; y += 16) {
  201.         for (x = 0; x < 16*8; x += 16) {
  202.             uint8_t *dst1[3];
  203.             dst1[0] = dst[0] + x*2 + y*2*dst_linesize[0];
  204.             dst1[1] = dst[1] + x   + y*  dst_linesize[1];
  205.             dst1[2] = dst[2] + x   + y*  dst_linesize[2];
  206.  
  207.             draw_cbp(dst1, dst_linesize, cbp, (64+off)*4, 128*8);
  208.             cbp++;
  209.         }
  210.     }
  211. }
  212.  
  213. static void mv_test(uint8_t *dst, int dst_linesize, int off)
  214. {
  215.     int x, y;
  216.  
  217.     for (y = 0; y < 16*16; y++) {
  218.         if (y&16)
  219.             continue;
  220.         for (x = 0; x < 16*16; x++)
  221.             dst[x + y*dst_linesize] = x + off*8/(y/32+1);
  222.     }
  223. }
  224.  
  225. static void ring1_test(uint8_t *dst, int dst_linesize, int off)
  226. {
  227.     int x, y, color = 0;
  228.  
  229.     for (y = off; y < 16*16; y += 16) {
  230.         for (x = off; x < 16*16; x += 16) {
  231.             draw_dc(dst + x + y*dst_linesize, dst_linesize, ((x+y)&16) ? color : -color, 16, 16);
  232.             color++;
  233.         }
  234.     }
  235. }
  236.  
  237. static void ring2_test(uint8_t *dst, int dst_linesize, int off)
  238. {
  239.     int x, y;
  240.  
  241.     for (y = 0; y < 16*16; y++) {
  242.         for (x = 0; x < 16*16; x++) {
  243.             double d = sqrt((x-8*16)*(x-8*16) + (y-8*16)*(y-8*16));
  244.             double r = d/20 - (int)(d/20);
  245.             if (r < off/30.0) {
  246.                 dst[x + y*dst_linesize]     = 255;
  247.                 dst[x + y*dst_linesize+256] = 0;
  248.             } else {
  249.                 dst[x + y*dst_linesize]     = x;
  250.                 dst[x + y*dst_linesize+256] = x;
  251.             }
  252.         }
  253.     }
  254. }
  255.  
  256. static av_cold int init(AVFilterContext *ctx)
  257. {
  258.     MPTestContext *test = ctx->priv;
  259.  
  260.     test->max_pts = test->duration >= 0 ?
  261.         av_rescale_q(test->duration, AV_TIME_BASE_Q, av_inv_q(test->frame_rate)) : -1;
  262.     test->pts = 0;
  263.  
  264.     av_log(ctx, AV_LOG_VERBOSE, "rate:%d/%d duration:%f\n",
  265.            test->frame_rate.num, test->frame_rate.den,
  266.            test->duration < 0 ? -1 : test->max_pts * av_q2d(av_inv_q(test->frame_rate)));
  267.     init_idct();
  268.  
  269.     return 0;
  270. }
  271.  
  272. static int config_props(AVFilterLink *outlink)
  273. {
  274.     AVFilterContext *ctx = outlink->src;
  275.     MPTestContext *test = ctx->priv;
  276.     const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(outlink->format);
  277.  
  278.     test->hsub = pix_desc->log2_chroma_w;
  279.     test->vsub = pix_desc->log2_chroma_h;
  280.  
  281.     outlink->w = WIDTH;
  282.     outlink->h = HEIGHT;
  283.     outlink->time_base = av_inv_q(test->frame_rate);
  284.  
  285.     return 0;
  286. }
  287.  
  288. static int query_formats(AVFilterContext *ctx)
  289. {
  290.     static const enum AVPixelFormat pix_fmts[] = {
  291.         AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE
  292.     };
  293.  
  294.     ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
  295.     return 0;
  296. }
  297.  
  298. static int request_frame(AVFilterLink *outlink)
  299. {
  300.     MPTestContext *test = outlink->src->priv;
  301.     AVFrame *picref;
  302.     int w = WIDTH, h = HEIGHT,
  303.         cw = FF_CEIL_RSHIFT(w, test->hsub), ch = FF_CEIL_RSHIFT(h, test->vsub);
  304.     unsigned int frame = outlink->frame_count;
  305.     enum test_type tt = test->test;
  306.     int i;
  307.  
  308.     if (test->max_pts >= 0 && test->pts > test->max_pts)
  309.         return AVERROR_EOF;
  310.     picref = ff_get_video_buffer(outlink, w, h);
  311.     if (!picref)
  312.         return AVERROR(ENOMEM);
  313.     picref->pts = test->pts++;
  314.  
  315.     // clean image
  316.     for (i = 0; i < h; i++)
  317.         memset(picref->data[0] + i*picref->linesize[0], 0, w);
  318.     for (i = 0; i < ch; i++) {
  319.         memset(picref->data[1] + i*picref->linesize[1], 128, cw);
  320.         memset(picref->data[2] + i*picref->linesize[2], 128, cw);
  321.     }
  322.  
  323.     if (tt == TEST_ALL && frame%30) /* draw a black frame at the beginning of each test */
  324.         tt = (frame/30)%(TEST_NB-1);
  325.  
  326.     switch (tt) {
  327.     case TEST_DC_LUMA:       dc_test(picref->data[0], picref->linesize[0], 256, 256, frame%30); break;
  328.     case TEST_DC_CHROMA:     dc_test(picref->data[1], picref->linesize[1], 256, 256, frame%30); break;
  329.     case TEST_FREQ_LUMA:   freq_test(picref->data[0], picref->linesize[0], frame%30); break;
  330.     case TEST_FREQ_CHROMA: freq_test(picref->data[1], picref->linesize[1], frame%30); break;
  331.     case TEST_AMP_LUMA:     amp_test(picref->data[0], picref->linesize[0], frame%30); break;
  332.     case TEST_AMP_CHROMA:   amp_test(picref->data[1], picref->linesize[1], frame%30); break;
  333.     case TEST_CBP:          cbp_test(picref->data   , picref->linesize   , frame%30); break;
  334.     case TEST_MV:            mv_test(picref->data[0], picref->linesize[0], frame%30); break;
  335.     case TEST_RING1:      ring1_test(picref->data[0], picref->linesize[0], frame%30); break;
  336.     case TEST_RING2:      ring2_test(picref->data[0], picref->linesize[0], frame%30); break;
  337.     }
  338.  
  339.     return ff_filter_frame(outlink, picref);
  340. }
  341.  
  342. static const AVFilterPad mptestsrc_outputs[] = {
  343.     {
  344.         .name          = "default",
  345.         .type          = AVMEDIA_TYPE_VIDEO,
  346.         .request_frame = request_frame,
  347.         .config_props  = config_props,
  348.     },
  349.     { NULL }
  350. };
  351.  
  352. AVFilter avfilter_vsrc_mptestsrc = {
  353.     .name          = "mptestsrc",
  354.     .description   = NULL_IF_CONFIG_SMALL("Generate various test pattern."),
  355.     .priv_size     = sizeof(MPTestContext),
  356.     .priv_class    = &mptestsrc_class,
  357.     .init          = init,
  358.     .query_formats = query_formats,
  359.     .inputs        = NULL,
  360.     .outputs       = mptestsrc_outputs,
  361. };
  362.