yading@11: /*
yading@11:  * Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at>
yading@11:  *
yading@11:  * This file is part of FFmpeg.
yading@11:  *
yading@11:  * FFmpeg is free software; you can redistribute it and/or modify
yading@11:  * it under the terms of the GNU General Public License as published by
yading@11:  * the Free Software Foundation; either version 2 of the License, or
yading@11:  * (at your option) any later version.
yading@11:  *
yading@11:  * FFmpeg is distributed in the hope that it will be useful,
yading@11:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@11:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
yading@11:  * GNU General Public License for more details.
yading@11:  *
yading@11:  * You should have received a copy of the GNU General Public License along
yading@11:  * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
yading@11:  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
yading@11:  */
yading@11: 
yading@11: /**
yading@11:  * @file
yading@11:  * MP test source, ported from MPlayer libmpcodecs/vf_test.c
yading@11:  */
yading@11: 
yading@11: #include "libavutil/avstring.h"
yading@11: #include "libavutil/opt.h"
yading@11: #include "libavutil/parseutils.h"
yading@11: #include "libavutil/pixdesc.h"
yading@11: #include "avfilter.h"
yading@11: #include "internal.h"
yading@11: #include "formats.h"
yading@11: #include "video.h"
yading@11: 
yading@11: #define WIDTH 512
yading@11: #define HEIGHT 512
yading@11: 
yading@11: enum test_type {
yading@11:     TEST_DC_LUMA,
yading@11:     TEST_DC_CHROMA,
yading@11:     TEST_FREQ_LUMA,
yading@11:     TEST_FREQ_CHROMA,
yading@11:     TEST_AMP_LUMA,
yading@11:     TEST_AMP_CHROMA,
yading@11:     TEST_CBP,
yading@11:     TEST_MV,
yading@11:     TEST_RING1,
yading@11:     TEST_RING2,
yading@11:     TEST_ALL,
yading@11:     TEST_NB
yading@11: };
yading@11: 
yading@11: typedef struct MPTestContext {
yading@11:     const AVClass *class;
yading@11:     unsigned int frame_nb;
yading@11:     AVRational frame_rate;
yading@11:     int64_t pts, max_pts, duration;
yading@11:     int hsub, vsub;
yading@11:     enum test_type test;
yading@11: } MPTestContext;
yading@11: 
yading@11: #define OFFSET(x) offsetof(MPTestContext, x)
yading@11: #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
yading@11: static const AVOption mptestsrc_options[]= {
yading@11:     { "rate",     "set video rate",     OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, 0, FLAGS },
yading@11:     { "r",        "set video rate",     OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, 0, FLAGS },
yading@11:     { "duration", "set video duration", OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64 = -1}, -1, INT64_MAX, FLAGS },
yading@11:     { "d",        "set video duration", OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64 = -1}, -1, INT64_MAX, FLAGS },
yading@11: 
yading@11:     { "test", "set test to perform", OFFSET(test),  AV_OPT_TYPE_INT,   {.i64=TEST_ALL}, 0, INT_MAX, FLAGS, "test" },
yading@11:     { "t",    "set test to perform", OFFSET(test),  AV_OPT_TYPE_INT,   {.i64=TEST_ALL}, 0, INT_MAX, FLAGS, "test" },
yading@11:         { "dc_luma",     "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_DC_LUMA},     INT_MIN, INT_MAX, FLAGS, "test" },
yading@11:         { "dc_chroma",   "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_DC_CHROMA},   INT_MIN, INT_MAX, FLAGS, "test" },
yading@11:         { "freq_luma",   "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_FREQ_LUMA},   INT_MIN, INT_MAX, FLAGS, "test" },
yading@11:         { "freq_chroma", "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_FREQ_CHROMA}, INT_MIN, INT_MAX, FLAGS, "test" },
yading@11:         { "amp_luma",    "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_AMP_LUMA},    INT_MIN, INT_MAX, FLAGS, "test" },
yading@11:         { "amp_chroma",  "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_AMP_CHROMA},  INT_MIN, INT_MAX, FLAGS, "test" },
yading@11:         { "cbp",         "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_CBP},         INT_MIN, INT_MAX, FLAGS, "test" },
yading@11:         { "mv",          "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_MV},          INT_MIN, INT_MAX, FLAGS, "test" },
yading@11:         { "ring1",       "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_RING1},       INT_MIN, INT_MAX, FLAGS, "test" },
yading@11:         { "ring2",       "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_RING2},       INT_MIN, INT_MAX, FLAGS, "test" },
yading@11:         { "all",         "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_ALL},         INT_MIN, INT_MAX, FLAGS, "test" },
yading@11:     { NULL },
yading@11: };
yading@11: 
yading@11: AVFILTER_DEFINE_CLASS(mptestsrc);
yading@11: 
yading@11: static double c[64];
yading@11: 
yading@11: static void init_idct(void)
yading@11: {
yading@11:     int i, j;
yading@11: 
yading@11:     for (i = 0; i < 8; i++) {
yading@11:         double s = i == 0 ? sqrt(0.125) : 0.5;
yading@11: 
yading@11:         for (j = 0; j < 8; j++)
yading@11:             c[i*8+j] = s*cos((M_PI/8.0)*i*(j+0.5));
yading@11:     }
yading@11: }
yading@11: 
yading@11: static void idct(uint8_t *dst, int dst_linesize, int src[64])
yading@11: {
yading@11:     int i, j, k;
yading@11:     double tmp[64];
yading@11: 
yading@11:     for (i = 0; i < 8; i++) {
yading@11:         for (j = 0; j < 8; j++) {
yading@11:             double sum = 0.0;
yading@11: 
yading@11:             for (k = 0; k < 8; k++)
yading@11:                 sum += c[k*8+j] * src[8*i+k];
yading@11: 
yading@11:             tmp[8*i+j] = sum;
yading@11:         }
yading@11:     }
yading@11: 
yading@11:     for (j = 0; j < 8; j++) {
yading@11:         for (i = 0; i < 8; i++) {
yading@11:             double sum = 0.0;
yading@11: 
yading@11:             for (k = 0; k < 8; k++)
yading@11:                 sum += c[k*8+i]*tmp[8*k+j];
yading@11: 
yading@11:             dst[dst_linesize*i + j] = av_clip((int)floor(sum+0.5), 0, 255);
yading@11:         }
yading@11:     }
yading@11: }
yading@11: 
yading@11: static void draw_dc(uint8_t *dst, int dst_linesize, int color, int w, int h)
yading@11: {
yading@11:     int x, y;
yading@11: 
yading@11:     for (y = 0; y < h; y++)
yading@11:         for (x = 0; x < w; x++)
yading@11:             dst[x + y*dst_linesize] = color;
yading@11: }
yading@11: 
yading@11: static void draw_basis(uint8_t *dst, int dst_linesize, int amp, int freq, int dc)
yading@11: {
yading@11:     int src[64];
yading@11: 
yading@11:     memset(src, 0, 64*sizeof(int));
yading@11:     src[0] = dc;
yading@11:     if (amp)
yading@11:         src[freq] = amp;
yading@11:     idct(dst, dst_linesize, src);
yading@11: }
yading@11: 
yading@11: static void draw_cbp(uint8_t *dst[3], int dst_linesize[3], int cbp, int amp, int dc)
yading@11: {
yading@11:     if (cbp&1)  draw_basis(dst[0]                    , dst_linesize[0], amp, 1, dc);
yading@11:     if (cbp&2)  draw_basis(dst[0]+8                  , dst_linesize[0], amp, 1, dc);
yading@11:     if (cbp&4)  draw_basis(dst[0]+  8*dst_linesize[0], dst_linesize[0], amp, 1, dc);
yading@11:     if (cbp&8)  draw_basis(dst[0]+8+8*dst_linesize[0], dst_linesize[0], amp, 1, dc);
yading@11:     if (cbp&16) draw_basis(dst[1]                    , dst_linesize[1], amp, 1, dc);
yading@11:     if (cbp&32) draw_basis(dst[2]                    , dst_linesize[2], amp, 1, dc);
yading@11: }
yading@11: 
yading@11: static void dc_test(uint8_t *dst, int dst_linesize, int w, int h, int off)
yading@11: {
yading@11:     const int step = FFMAX(256/(w*h/256), 1);
yading@11:     int x, y, color = off;
yading@11: 
yading@11:     for (y = 0; y < h; y += 16) {
yading@11:         for (x = 0; x < w; x += 16) {
yading@11:             draw_dc(dst + x + y*dst_linesize, dst_linesize, color, 8, 8);
yading@11:             color += step;
yading@11:         }
yading@11:     }
yading@11: }
yading@11: 
yading@11: static void freq_test(uint8_t *dst, int dst_linesize, int off)
yading@11: {
yading@11:     int x, y, freq = 0;
yading@11: 
yading@11:     for (y = 0; y < 8*16; y += 16) {
yading@11:         for (x = 0; x < 8*16; x += 16) {
yading@11:             draw_basis(dst + x + y*dst_linesize, dst_linesize, 4*(96+off), freq, 128*8);
yading@11:             freq++;
yading@11:         }
yading@11:     }
yading@11: }
yading@11: 
yading@11: static void amp_test(uint8_t *dst, int dst_linesize, int off)
yading@11: {
yading@11:     int x, y, amp = off;
yading@11: 
yading@11:     for (y = 0; y < 16*16; y += 16) {
yading@11:         for (x = 0; x < 16*16; x += 16) {
yading@11:             draw_basis(dst + x + y*dst_linesize, dst_linesize, 4*amp, 1, 128*8);
yading@11:             amp++;
yading@11:         }
yading@11:     }
yading@11: }
yading@11: 
yading@11: static void cbp_test(uint8_t *dst[3], int dst_linesize[3], int off)
yading@11: {
yading@11:     int x, y, cbp = 0;
yading@11: 
yading@11:     for (y = 0; y < 16*8; y += 16) {
yading@11:         for (x = 0; x < 16*8; x += 16) {
yading@11:             uint8_t *dst1[3];
yading@11:             dst1[0] = dst[0] + x*2 + y*2*dst_linesize[0];
yading@11:             dst1[1] = dst[1] + x   + y*  dst_linesize[1];
yading@11:             dst1[2] = dst[2] + x   + y*  dst_linesize[2];
yading@11: 
yading@11:             draw_cbp(dst1, dst_linesize, cbp, (64+off)*4, 128*8);
yading@11:             cbp++;
yading@11:         }
yading@11:     }
yading@11: }
yading@11: 
yading@11: static void mv_test(uint8_t *dst, int dst_linesize, int off)
yading@11: {
yading@11:     int x, y;
yading@11: 
yading@11:     for (y = 0; y < 16*16; y++) {
yading@11:         if (y&16)
yading@11:             continue;
yading@11:         for (x = 0; x < 16*16; x++)
yading@11:             dst[x + y*dst_linesize] = x + off*8/(y/32+1);
yading@11:     }
yading@11: }
yading@11: 
yading@11: static void ring1_test(uint8_t *dst, int dst_linesize, int off)
yading@11: {
yading@11:     int x, y, color = 0;
yading@11: 
yading@11:     for (y = off; y < 16*16; y += 16) {
yading@11:         for (x = off; x < 16*16; x += 16) {
yading@11:             draw_dc(dst + x + y*dst_linesize, dst_linesize, ((x+y)&16) ? color : -color, 16, 16);
yading@11:             color++;
yading@11:         }
yading@11:     }
yading@11: }
yading@11: 
yading@11: static void ring2_test(uint8_t *dst, int dst_linesize, int off)
yading@11: {
yading@11:     int x, y;
yading@11: 
yading@11:     for (y = 0; y < 16*16; y++) {
yading@11:         for (x = 0; x < 16*16; x++) {
yading@11:             double d = sqrt((x-8*16)*(x-8*16) + (y-8*16)*(y-8*16));
yading@11:             double r = d/20 - (int)(d/20);
yading@11:             if (r < off/30.0) {
yading@11:                 dst[x + y*dst_linesize]     = 255;
yading@11:                 dst[x + y*dst_linesize+256] = 0;
yading@11:             } else {
yading@11:                 dst[x + y*dst_linesize]     = x;
yading@11:                 dst[x + y*dst_linesize+256] = x;
yading@11:             }
yading@11:         }
yading@11:     }
yading@11: }
yading@11: 
yading@11: static av_cold int init(AVFilterContext *ctx)
yading@11: {
yading@11:     MPTestContext *test = ctx->priv;
yading@11: 
yading@11:     test->max_pts = test->duration >= 0 ?
yading@11:         av_rescale_q(test->duration, AV_TIME_BASE_Q, av_inv_q(test->frame_rate)) : -1;
yading@11:     test->frame_nb = 0;
yading@11:     test->pts = 0;
yading@11: 
yading@11:     av_log(ctx, AV_LOG_VERBOSE, "rate:%d/%d duration:%f\n",
yading@11:            test->frame_rate.num, test->frame_rate.den,
yading@11:            test->duration < 0 ? -1 : test->max_pts * av_q2d(av_inv_q(test->frame_rate)));
yading@11:     init_idct();
yading@11: 
yading@11:     return 0;
yading@11: }
yading@11: 
yading@11: static int config_props(AVFilterLink *outlink)
yading@11: {
yading@11:     AVFilterContext *ctx = outlink->src;
yading@11:     MPTestContext *test = ctx->priv;
yading@11:     const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(outlink->format);
yading@11: 
yading@11:     test->hsub = pix_desc->log2_chroma_w;
yading@11:     test->vsub = pix_desc->log2_chroma_h;
yading@11: 
yading@11:     outlink->w = WIDTH;
yading@11:     outlink->h = HEIGHT;
yading@11:     outlink->time_base = av_inv_q(test->frame_rate);
yading@11: 
yading@11:     return 0;
yading@11: }
yading@11: 
yading@11: static int query_formats(AVFilterContext *ctx)
yading@11: {
yading@11:     static const enum AVPixelFormat pix_fmts[] = {
yading@11:         AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE
yading@11:     };
yading@11: 
yading@11:     ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
yading@11:     return 0;
yading@11: }
yading@11: 
yading@11: static int request_frame(AVFilterLink *outlink)
yading@11: {
yading@11:     MPTestContext *test = outlink->src->priv;
yading@11:     AVFrame *picref;
yading@11:     int w = WIDTH, h = HEIGHT, cw = w>>test->hsub, ch = h>>test->vsub;
yading@11:     unsigned int frame = test->frame_nb;
yading@11:     enum test_type tt = test->test;
yading@11:     int i;
yading@11: 
yading@11:     if (test->max_pts >= 0 && test->pts > test->max_pts)
yading@11:         return AVERROR_EOF;
yading@11:     picref = ff_get_video_buffer(outlink, w, h);
yading@11:     if (!picref)
yading@11:         return AVERROR(ENOMEM);
yading@11:     picref->pts = test->pts++;
yading@11: 
yading@11:     // clean image
yading@11:     for (i = 0; i < h; i++)
yading@11:         memset(picref->data[0] + i*picref->linesize[0], 0, w);
yading@11:     for (i = 0; i < ch; i++) {
yading@11:         memset(picref->data[1] + i*picref->linesize[1], 128, cw);
yading@11:         memset(picref->data[2] + i*picref->linesize[2], 128, cw);
yading@11:     }
yading@11: 
yading@11:     if (tt == TEST_ALL && frame%30) /* draw a black frame at the beginning of each test */
yading@11:         tt = (frame/30)%(TEST_NB-1);
yading@11: 
yading@11:     switch (tt) {
yading@11:     case TEST_DC_LUMA:       dc_test(picref->data[0], picref->linesize[0], 256, 256, frame%30); break;
yading@11:     case TEST_DC_CHROMA:     dc_test(picref->data[1], picref->linesize[1], 256, 256, frame%30); break;
yading@11:     case TEST_FREQ_LUMA:   freq_test(picref->data[0], picref->linesize[0], frame%30); break;
yading@11:     case TEST_FREQ_CHROMA: freq_test(picref->data[1], picref->linesize[1], frame%30); break;
yading@11:     case TEST_AMP_LUMA:     amp_test(picref->data[0], picref->linesize[0], frame%30); break;
yading@11:     case TEST_AMP_CHROMA:   amp_test(picref->data[1], picref->linesize[1], frame%30); break;
yading@11:     case TEST_CBP:          cbp_test(picref->data   , picref->linesize   , frame%30); break;
yading@11:     case TEST_MV:            mv_test(picref->data[0], picref->linesize[0], frame%30); break;
yading@11:     case TEST_RING1:      ring1_test(picref->data[0], picref->linesize[0], frame%30); break;
yading@11:     case TEST_RING2:      ring2_test(picref->data[0], picref->linesize[0], frame%30); break;
yading@11:     }
yading@11: 
yading@11:     test->frame_nb++;
yading@11:     return ff_filter_frame(outlink, picref);
yading@11: }
yading@11: 
yading@11: static const AVFilterPad mptestsrc_outputs[] = {
yading@11:     {
yading@11:         .name          = "default",
yading@11:         .type          = AVMEDIA_TYPE_VIDEO,
yading@11:         .request_frame = request_frame,
yading@11:         .config_props  = config_props,
yading@11:     },
yading@11:     { NULL }
yading@11: };
yading@11: 
yading@11: AVFilter avfilter_vsrc_mptestsrc = {
yading@11:     .name      = "mptestsrc",
yading@11:     .description = NULL_IF_CONFIG_SMALL("Generate various test pattern."),
yading@11:     .priv_size = sizeof(MPTestContext),
yading@11:     .init      = init,
yading@11: 
yading@11:     .query_formats   = query_formats,
yading@11: 
yading@11:     .inputs         = NULL,
yading@11:     .outputs        = mptestsrc_outputs,
yading@11:     .priv_class     = &mptestsrc_class,
yading@11: };