vsrc_testsrc.c 16.8 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
/*
 * Copyright (c) 2007 Nicolas George <nicolas.george@normalesup.org>
 * Copyright (c) 2011 Stefano Sabatini
 *
 * This file is part of Libav.
 *
 * Libav is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * Libav is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with Libav; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

/**
 * @file
24 25 26
 * Misc test sources.
 *
 * testsrc is based on the test pattern generator demuxer by Nicolas George:
27
 * http://lists.ffmpeg.org/pipermail/ffmpeg-devel/2007-October/037845.html
28 29 30
 *
 * rgbtestsrc is ported from MPlayer libmpcodecs/vf_rgbtest.c by
 * Michael Niedermayer.
31 32 33 34
 */

#include <float.h>

35
#include "libavutil/common.h"
36 37
#include "libavutil/mathematics.h"
#include "libavutil/opt.h"
38
#include "libavutil/intreadwrite.h"
39 40
#include "libavutil/parseutils.h"
#include "avfilter.h"
41
#include "formats.h"
42
#include "internal.h"
43
#include "video.h"
44 45 46 47 48 49 50 51 52 53 54 55 56

typedef struct {
    const AVClass *class;
    int h, w;
    unsigned int nb_frame;
    AVRational time_base;
    int64_t pts, max_pts;
    char *size;                 ///< video frame size
    char *rate;                 ///< video frame rate
    char *duration;             ///< total duration of the generated video
    AVRational sar;             ///< sample aspect ratio

    void (* fill_picture_fn)(AVFilterContext *ctx, AVFilterBufferRef *picref);
57 58 59

    /* only used by rgbtest */
    int rgba_map[4];
60 61 62 63 64
} TestSourceContext;

#define OFFSET(x) offsetof(TestSourceContext, x)

static const AVOption testsrc_options[] = {
65 66 67 68 69
    { "size",     "set video size",     OFFSET(size),     AV_OPT_TYPE_STRING, {.str = "320x240"}},
    { "s",        "set video size",     OFFSET(size),     AV_OPT_TYPE_STRING, {.str = "320x240"}},
    { "rate",     "set video rate",     OFFSET(rate),     AV_OPT_TYPE_STRING, {.str = "25"},    },
    { "r",        "set video rate",     OFFSET(rate),     AV_OPT_TYPE_STRING, {.str = "25"},    },
    { "duration", "set video duration", OFFSET(duration), AV_OPT_TYPE_STRING, {.str = NULL},    },
70
    { "sar",      "set video sample aspect ratio", OFFSET(sar), AV_OPT_TYPE_RATIONAL, {.dbl = 1},  0, INT_MAX },
71 72 73
    { NULL },
};

74
static av_cold int init_common(AVFilterContext *ctx, const char *args)
75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136
{
    TestSourceContext *test = ctx->priv;
    AVRational frame_rate_q;
    int64_t duration = -1;
    int ret = 0;

    av_opt_set_defaults(test);

    if ((ret = (av_set_options_string(test, args, "=", ":"))) < 0) {
        av_log(ctx, AV_LOG_ERROR, "Error parsing options string: '%s'\n", args);
        return ret;
    }

    if ((ret = av_parse_video_size(&test->w, &test->h, test->size)) < 0) {
        av_log(ctx, AV_LOG_ERROR, "Invalid frame size: '%s'\n", test->size);
        return ret;
    }

    if ((ret = av_parse_video_rate(&frame_rate_q, test->rate)) < 0 ||
        frame_rate_q.den <= 0 || frame_rate_q.num <= 0) {
        av_log(ctx, AV_LOG_ERROR, "Invalid frame rate: '%s'\n", test->rate);
        return ret;
    }

    if ((test->duration) && (ret = av_parse_time(&duration, test->duration, 1)) < 0) {
        av_log(ctx, AV_LOG_ERROR, "Invalid duration: '%s'\n", test->duration);
        return ret;
    }

    test->time_base.num = frame_rate_q.den;
    test->time_base.den = frame_rate_q.num;
    test->max_pts = duration >= 0 ?
        av_rescale_q(duration, AV_TIME_BASE_Q, test->time_base) : -1;
    test->nb_frame = 0;
    test->pts = 0;

    av_log(ctx, AV_LOG_DEBUG, "size:%dx%d rate:%d/%d duration:%f sar:%d/%d\n",
           test->w, test->h, frame_rate_q.num, frame_rate_q.den,
           duration < 0 ? -1 : test->max_pts * av_q2d(test->time_base),
           test->sar.num, test->sar.den);
    return 0;
}

static int config_props(AVFilterLink *outlink)
{
    TestSourceContext *test = outlink->src->priv;

    outlink->w = test->w;
    outlink->h = test->h;
    outlink->sample_aspect_ratio = test->sar;
    outlink->time_base = test->time_base;

    return 0;
}

static int request_frame(AVFilterLink *outlink)
{
    TestSourceContext *test = outlink->src->priv;
    AVFilterBufferRef *picref;

    if (test->max_pts >= 0 && test->pts > test->max_pts)
        return AVERROR_EOF;
137
    picref = ff_get_video_buffer(outlink, AV_PERM_WRITE, test->w, test->h);
138 139 140
    if (!picref)
        return AVERROR(ENOMEM);

141 142 143 144 145 146 147 148 149
    picref->pts = test->pts++;
    picref->pos = -1;
    picref->video->key_frame = 1;
    picref->video->interlaced = 0;
    picref->video->pict_type = AV_PICTURE_TYPE_I;
    picref->video->pixel_aspect = test->sar;
    test->nb_frame++;
    test->fill_picture_fn(outlink->src, picref);

150
    return ff_filter_frame(outlink, picref);
151 152
}

153 154
#if CONFIG_TESTSRC_FILTER

155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337
static const char *testsrc_get_name(void *ctx)
{
    return "testsrc";
}

static const AVClass testsrc_class = {
    .class_name = "TestSourceContext",
    .item_name  = testsrc_get_name,
    .option     = testsrc_options,
};

/**
 * Fill a rectangle with value val.
 *
 * @param val the RGB value to set
 * @param dst pointer to the destination buffer to fill
 * @param dst_linesize linesize of destination
 * @param segment_width width of the segment
 * @param x horizontal coordinate where to draw the rectangle in the destination buffer
 * @param y horizontal coordinate where to draw the rectangle in the destination buffer
 * @param w width  of the rectangle to draw, expressed as a number of segment_width units
 * @param h height of the rectangle to draw, expressed as a number of segment_width units
 */
static void draw_rectangle(unsigned val, uint8_t *dst, int dst_linesize, unsigned segment_width,
                           unsigned x, unsigned y, unsigned w, unsigned h)
{
    int i;
    int step = 3;

    dst += segment_width * (step * x + y * dst_linesize);
    w *= segment_width * step;
    h *= segment_width;
    for (i = 0; i < h; i++) {
        memset(dst, val, w);
        dst += dst_linesize;
    }
}

static void draw_digit(int digit, uint8_t *dst, unsigned dst_linesize,
                       unsigned segment_width)
{
#define TOP_HBAR        1
#define MID_HBAR        2
#define BOT_HBAR        4
#define LEFT_TOP_VBAR   8
#define LEFT_BOT_VBAR  16
#define RIGHT_TOP_VBAR 32
#define RIGHT_BOT_VBAR 64
    struct {
        int x, y, w, h;
    } segments[] = {
        { 1,  0, 5, 1 }, /* TOP_HBAR */
        { 1,  6, 5, 1 }, /* MID_HBAR */
        { 1, 12, 5, 1 }, /* BOT_HBAR */
        { 0,  1, 1, 5 }, /* LEFT_TOP_VBAR */
        { 0,  7, 1, 5 }, /* LEFT_BOT_VBAR */
        { 6,  1, 1, 5 }, /* RIGHT_TOP_VBAR */
        { 6,  7, 1, 5 }  /* RIGHT_BOT_VBAR */
    };
    static const unsigned char masks[10] = {
        /* 0 */ TOP_HBAR         |BOT_HBAR|LEFT_TOP_VBAR|LEFT_BOT_VBAR|RIGHT_TOP_VBAR|RIGHT_BOT_VBAR,
        /* 1 */                                                        RIGHT_TOP_VBAR|RIGHT_BOT_VBAR,
        /* 2 */ TOP_HBAR|MID_HBAR|BOT_HBAR|LEFT_BOT_VBAR                             |RIGHT_TOP_VBAR,
        /* 3 */ TOP_HBAR|MID_HBAR|BOT_HBAR                            |RIGHT_TOP_VBAR|RIGHT_BOT_VBAR,
        /* 4 */          MID_HBAR         |LEFT_TOP_VBAR              |RIGHT_TOP_VBAR|RIGHT_BOT_VBAR,
        /* 5 */ TOP_HBAR|BOT_HBAR|MID_HBAR|LEFT_TOP_VBAR                             |RIGHT_BOT_VBAR,
        /* 6 */ TOP_HBAR|BOT_HBAR|MID_HBAR|LEFT_TOP_VBAR|LEFT_BOT_VBAR               |RIGHT_BOT_VBAR,
        /* 7 */ TOP_HBAR                                              |RIGHT_TOP_VBAR|RIGHT_BOT_VBAR,
        /* 8 */ TOP_HBAR|BOT_HBAR|MID_HBAR|LEFT_TOP_VBAR|LEFT_BOT_VBAR|RIGHT_TOP_VBAR|RIGHT_BOT_VBAR,
        /* 9 */ TOP_HBAR|BOT_HBAR|MID_HBAR|LEFT_TOP_VBAR              |RIGHT_TOP_VBAR|RIGHT_BOT_VBAR,
    };
    unsigned mask = masks[digit];
    int i;

    draw_rectangle(0, dst, dst_linesize, segment_width, 0, 0, 8, 13);
    for (i = 0; i < FF_ARRAY_ELEMS(segments); i++)
        if (mask & (1<<i))
            draw_rectangle(255, dst, dst_linesize, segment_width,
                           segments[i].x, segments[i].y, segments[i].w, segments[i].h);
}

#define GRADIENT_SIZE (6 * 256)

static void test_fill_picture(AVFilterContext *ctx, AVFilterBufferRef *picref)
{
    TestSourceContext *test = ctx->priv;
    uint8_t *p, *p0;
    int x, y;
    int color, color_rest;
    int icolor;
    int radius;
    int quad0, quad;
    int dquad_x, dquad_y;
    int grad, dgrad, rgrad, drgrad;
    int seg_size;
    int second;
    int i;
    uint8_t *data = picref->data[0];
    int width  = picref->video->w;
    int height = picref->video->h;

    /* draw colored bars and circle */
    radius = (width + height) / 4;
    quad0 = width * width / 4 + height * height / 4 - radius * radius;
    dquad_y = 1 - height;
    p0 = data;
    for (y = 0; y < height; y++) {
        p = p0;
        color = 0;
        color_rest = 0;
        quad = quad0;
        dquad_x = 1 - width;
        for (x = 0; x < width; x++) {
            icolor = color;
            if (quad < 0)
                icolor ^= 7;
            quad += dquad_x;
            dquad_x += 2;
            *(p++) = icolor & 1 ? 255 : 0;
            *(p++) = icolor & 2 ? 255 : 0;
            *(p++) = icolor & 4 ? 255 : 0;
            color_rest += 8;
            if (color_rest >= width) {
                color_rest -= width;
                color++;
            }
        }
        quad0 += dquad_y;
        dquad_y += 2;
        p0 += picref->linesize[0];
    }

    /* draw sliding color line */
    p = data + picref->linesize[0] * height * 3/4;
    grad = (256 * test->nb_frame * test->time_base.num / test->time_base.den) %
        GRADIENT_SIZE;
    rgrad = 0;
    dgrad = GRADIENT_SIZE / width;
    drgrad = GRADIENT_SIZE % width;
    for (x = 0; x < width; x++) {
        *(p++) =
            grad < 256 || grad >= 5 * 256 ? 255 :
            grad >= 2 * 256 && grad < 4 * 256 ? 0 :
            grad < 2 * 256 ? 2 * 256 - 1 - grad : grad - 4 * 256;
        *(p++) =
            grad >= 4 * 256 ? 0 :
            grad >= 1 * 256 && grad < 3 * 256 ? 255 :
            grad < 1 * 256 ? grad : 4 * 256 - 1 - grad;
        *(p++) =
            grad < 2 * 256 ? 0 :
            grad >= 3 * 256 && grad < 5 * 256 ? 255 :
            grad < 3 * 256 ? grad - 2 * 256 : 6 * 256 - 1 - grad;
        grad += dgrad;
        rgrad += drgrad;
        if (rgrad >= GRADIENT_SIZE) {
            grad++;
            rgrad -= GRADIENT_SIZE;
        }
        if (grad >= GRADIENT_SIZE)
            grad -= GRADIENT_SIZE;
    }
    for (y = height / 8; y > 0; y--) {
        memcpy(p, p - picref->linesize[0], 3 * width);
        p += picref->linesize[0];
    }

    /* draw digits */
    seg_size = width / 80;
    if (seg_size >= 1 && height >= 13 * seg_size) {
        second = test->nb_frame * test->time_base.num / test->time_base.den;
        x = width - (width - seg_size * 64) / 2;
        y = (height - seg_size * 13) / 2;
        p = data + (x*3 + y * picref->linesize[0]);
        for (i = 0; i < 8; i++) {
            p -= 3 * 8 * seg_size;
            draw_digit(second % 10, p, picref->linesize[0], seg_size);
            second /= 10;
            if (second == 0)
                break;
        }
    }
}

338
static av_cold int test_init(AVFilterContext *ctx, const char *args)
339 340 341 342 343
{
    TestSourceContext *test = ctx->priv;

    test->class = &testsrc_class;
    test->fill_picture_fn = test_fill_picture;
344
    return init_common(ctx, args);
345 346 347 348
}

static int test_query_formats(AVFilterContext *ctx)
{
349 350
    static const enum AVPixelFormat pix_fmts[] = {
        AV_PIX_FMT_RGB24, AV_PIX_FMT_NONE
351
    };
352
    ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
353 354 355
    return 0;
}

356 357 358 359 360 361 362 363 364 365
static const AVFilterPad avfilter_vsrc_testsrc_outputs[] = {
    {
        .name          = "default",
        .type          = AVMEDIA_TYPE_VIDEO,
        .request_frame = request_frame,
        .config_props  = config_props,
    },
    { NULL }
};

366 367 368 369 370 371 372 373
AVFilter avfilter_vsrc_testsrc = {
    .name          = "testsrc",
    .description   = NULL_IF_CONFIG_SMALL("Generate test pattern."),
    .priv_size     = sizeof(TestSourceContext),
    .init          = test_init,

    .query_formats = test_query_formats,

374
    .inputs    = NULL,
375

376
    .outputs   = avfilter_vsrc_testsrc_outputs,
377
};
378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399

#endif /* CONFIG_TESTSRC_FILTER */

#if CONFIG_RGBTESTSRC_FILTER

static const char *rgbtestsrc_get_name(void *ctx)
{
    return "rgbtestsrc";
}

static const AVClass rgbtestsrc_class = {
    .class_name = "RGBTestSourceContext",
    .item_name  = rgbtestsrc_get_name,
    .option     = testsrc_options,
};

#define R 0
#define G 1
#define B 2
#define A 3

static void rgbtest_put_pixel(uint8_t *dst, int dst_linesize,
400
                              int x, int y, int r, int g, int b, enum AVPixelFormat fmt,
401 402 403 404 405 406
                              int rgba_map[4])
{
    int32_t v;
    uint8_t *p;

    switch (fmt) {
407 408 409 410 411 412 413 414
    case AV_PIX_FMT_BGR444: ((uint16_t*)(dst + y*dst_linesize))[x] = ((r >> 4) << 8) | ((g >> 4) << 4) | (b >> 4); break;
    case AV_PIX_FMT_RGB444: ((uint16_t*)(dst + y*dst_linesize))[x] = ((b >> 4) << 8) | ((g >> 4) << 4) | (r >> 4); break;
    case AV_PIX_FMT_BGR555: ((uint16_t*)(dst + y*dst_linesize))[x] = ((r>>3)<<10) | ((g>>3)<<5) | (b>>3); break;
    case AV_PIX_FMT_RGB555: ((uint16_t*)(dst + y*dst_linesize))[x] = ((b>>3)<<10) | ((g>>3)<<5) | (r>>3); break;
    case AV_PIX_FMT_BGR565: ((uint16_t*)(dst + y*dst_linesize))[x] = ((r>>3)<<11) | ((g>>2)<<5) | (b>>3); break;
    case AV_PIX_FMT_RGB565: ((uint16_t*)(dst + y*dst_linesize))[x] = ((b>>3)<<11) | ((g>>2)<<5) | (r>>3); break;
    case AV_PIX_FMT_RGB24:
    case AV_PIX_FMT_BGR24:
415 416 417 418
        v = (r << (rgba_map[R]*8)) + (g << (rgba_map[G]*8)) + (b << (rgba_map[B]*8));
        p = dst + 3*x + y*dst_linesize;
        AV_WL24(p, v);
        break;
419 420 421 422
    case AV_PIX_FMT_RGBA:
    case AV_PIX_FMT_BGRA:
    case AV_PIX_FMT_ARGB:
    case AV_PIX_FMT_ABGR:
423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449
        v = (r << (rgba_map[R]*8)) + (g << (rgba_map[G]*8)) + (b << (rgba_map[B]*8));
        p = dst + 4*x + y*dst_linesize;
        AV_WL32(p, v);
        break;
    }
}

static void rgbtest_fill_picture(AVFilterContext *ctx, AVFilterBufferRef *picref)
{
    TestSourceContext *test = ctx->priv;
    int x, y, w = picref->video->w, h = picref->video->h;

    for (y = 0; y < h; y++) {
         for (x = 0; x < picref->video->w; x++) {
             int c = 256*x/w;
             int r = 0, g = 0, b = 0;

             if      (3*y < h  ) r = c;
             else if (3*y < 2*h) g = c;
             else                b = c;

             rgbtest_put_pixel(picref->data[0], picref->linesize[0], x, y, r, g, b,
                               ctx->outputs[0]->format, test->rgba_map);
         }
     }
}

450
static av_cold int rgbtest_init(AVFilterContext *ctx, const char *args)
451 452 453 454 455
{
    TestSourceContext *test = ctx->priv;

    test->class = &rgbtestsrc_class;
    test->fill_picture_fn = rgbtest_fill_picture;
456
    return init_common(ctx, args);
457 458 459 460
}

static int rgbtest_query_formats(AVFilterContext *ctx)
{
461 462 463 464 465 466 467
    static const enum AVPixelFormat pix_fmts[] = {
        AV_PIX_FMT_RGBA, AV_PIX_FMT_ARGB, AV_PIX_FMT_BGRA, AV_PIX_FMT_ABGR,
        AV_PIX_FMT_BGR24, AV_PIX_FMT_RGB24,
        AV_PIX_FMT_RGB444, AV_PIX_FMT_BGR444,
        AV_PIX_FMT_RGB565, AV_PIX_FMT_BGR565,
        AV_PIX_FMT_RGB555, AV_PIX_FMT_BGR555,
        AV_PIX_FMT_NONE
468
    };
469
    ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
470 471 472 473 474 475 476 477
    return 0;
}

static int rgbtest_config_props(AVFilterLink *outlink)
{
    TestSourceContext *test = outlink->src->priv;

    switch (outlink->format) {
478 479 480 481 482 483
    case AV_PIX_FMT_ARGB:  test->rgba_map[A] = 0; test->rgba_map[R] = 1; test->rgba_map[G] = 2; test->rgba_map[B] = 3; break;
    case AV_PIX_FMT_ABGR:  test->rgba_map[A] = 0; test->rgba_map[B] = 1; test->rgba_map[G] = 2; test->rgba_map[R] = 3; break;
    case AV_PIX_FMT_RGBA:
    case AV_PIX_FMT_RGB24: test->rgba_map[R] = 0; test->rgba_map[G] = 1; test->rgba_map[B] = 2; test->rgba_map[A] = 3; break;
    case AV_PIX_FMT_BGRA:
    case AV_PIX_FMT_BGR24: test->rgba_map[B] = 0; test->rgba_map[G] = 1; test->rgba_map[R] = 2; test->rgba_map[A] = 3; break;
484 485 486 487 488
    }

    return config_props(outlink);
}

489 490 491 492 493 494 495 496 497 498
static const AVFilterPad avfilter_vsrc_rgbtestsrc_outputs[] = {
    {
        .name          = "default",
        .type          = AVMEDIA_TYPE_VIDEO,
        .request_frame = request_frame,
        .config_props  = rgbtest_config_props,
    },
    { NULL }
};

499 500 501 502 503 504 505 506
AVFilter avfilter_vsrc_rgbtestsrc = {
    .name          = "rgbtestsrc",
    .description   = NULL_IF_CONFIG_SMALL("Generate RGB test pattern."),
    .priv_size     = sizeof(TestSourceContext),
    .init          = rgbtest_init,

    .query_formats = rgbtest_query_formats,

507
    .inputs    = NULL,
508

509
    .outputs   = avfilter_vsrc_rgbtestsrc_outputs,
510 511 512
};

#endif /* CONFIG_RGBTESTSRC_FILTER */