/* * 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 * Misc test sources. * * testsrc is based on the test pattern generator demuxer by Nicolas George: * http://lists.ffmpeg.org/pipermail/ffmpeg-devel/2007-October/037845.html * * rgbtestsrc is ported from MPlayer libmpcodecs/vf_rgbtest.c by * Michael Niedermayer. */ #include <float.h> #include "libavutil/mathematics.h"#include "libavutil/opt.h"#include "libavutil/intreadwrite.h"#include "libavutil/parseutils.h"#include "avfilter.h"#include "formats.h"#include "internal.h"#include "video.h" 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);     /* only used by rgbtest */    int rgba_map[4];} TestSourceContext; #define OFFSET(x) offsetof(TestSourceContext, x) static const AVOption testsrc_options[] = {    { "size",     "set video size",     OFFSET(size),     FF_OPT_TYPE_STRING, {.str = "320x240"}},    { "s",        "set video size",     OFFSET(size),     FF_OPT_TYPE_STRING, {.str = "320x240"}},    { "rate",     "set video rate",     OFFSET(rate),     FF_OPT_TYPE_STRING, {.str = "25"},    },    { "r",        "set video rate",     OFFSET(rate),     FF_OPT_TYPE_STRING, {.str = "25"},    },    { "duration", "set video duration", OFFSET(duration), FF_OPT_TYPE_STRING, {.str = NULL},    },    { "sar",      "set video sample aspect ratio", OFFSET(sar), FF_OPT_TYPE_RATIONAL, {1},  0, INT_MAX },    { NULL },}; static av_cold int init_common(AVFilterContext *ctx, const char *args, void *opaque){    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;    picref = ff_get_video_buffer(outlink, AV_PERM_WRITE, test->w, test->h);    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);     ff_start_frame(outlink, avfilter_ref_buffer(picref, ~0));    ff_draw_slice(outlink, 0, picref->video->h, 1);    ff_end_frame(outlink);    avfilter_unref_buffer(picref);     return 0;} #if CONFIG_TESTSRC_FILTER 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;        }    }} static av_cold int test_init(AVFilterContext *ctx, const char *args, void *opaque){    TestSourceContext *test = ctx->priv;     test->class = &testsrc_class;    test->fill_picture_fn = test_fill_picture;    return init_common(ctx, args, opaque);} static int test_query_formats(AVFilterContext *ctx){    static const enum PixelFormat pix_fmts[] = {        PIX_FMT_RGB24, PIX_FMT_NONE    };    ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));    return 0;} 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,     .inputs    = (AVFilterPad[]) {{ .name = NULL}},     .outputs   = (AVFilterPad[]) {{ .name = "default",                                    .type = AVMEDIA_TYPE_VIDEO,                                    .request_frame = request_frame,                                    .config_props  = config_props, },                                  { .name = NULL }},}; #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,                              int x, int y, int r, int g, int b, enum PixelFormat fmt,                              int rgba_map[4]){    int32_t v;    uint8_t *p;     switch (fmt) {    case PIX_FMT_BGR444: ((uint16_t*)(dst + y*dst_linesize))[x] = ((r >> 4) << 8) | ((g >> 4) << 4) | (b >> 4); break;    case PIX_FMT_RGB444: ((uint16_t*)(dst + y*dst_linesize))[x] = ((b >> 4) << 8) | ((g >> 4) << 4) | (r >> 4); break;    case PIX_FMT_BGR555: ((uint16_t*)(dst + y*dst_linesize))[x] = ((r>>3)<<10) | ((g>>3)<<5) | (b>>3); break;    case PIX_FMT_RGB555: ((uint16_t*)(dst + y*dst_linesize))[x] = ((b>>3)<<10) | ((g>>3)<<5) | (r>>3); break;    case PIX_FMT_BGR565: ((uint16_t*)(dst + y*dst_linesize))[x] = ((r>>3)<<11) | ((g>>2)<<5) | (b>>3); break;    case PIX_FMT_RGB565: ((uint16_t*)(dst + y*dst_linesize))[x] = ((b>>3)<<11) | ((g>>2)<<5) | (r>>3); break;    case PIX_FMT_RGB24:    case PIX_FMT_BGR24:        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;    case PIX_FMT_RGBA:    case PIX_FMT_BGRA:    case PIX_FMT_ARGB:    case PIX_FMT_ABGR:        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);         }     }} static av_cold int rgbtest_init(AVFilterContext *ctx, const char *args, void *opaque){    TestSourceContext *test = ctx->priv;     test->class = &rgbtestsrc_class;    test->fill_picture_fn = rgbtest_fill_picture;    return init_common(ctx, args, opaque);} static int rgbtest_query_formats(AVFilterContext *ctx){    static const enum PixelFormat pix_fmts[] = {        PIX_FMT_RGBA, PIX_FMT_ARGB, PIX_FMT_BGRA, PIX_FMT_ABGR,        PIX_FMT_BGR24, PIX_FMT_RGB24,        PIX_FMT_RGB444, PIX_FMT_BGR444,        PIX_FMT_RGB565, PIX_FMT_BGR565,        PIX_FMT_RGB555, PIX_FMT_BGR555,        PIX_FMT_NONE    };    ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));    return 0;} static int rgbtest_config_props(AVFilterLink *outlink){    TestSourceContext *test = outlink->src->priv;     switch (outlink->format) {    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;    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;    case PIX_FMT_RGBA:    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;    case PIX_FMT_BGRA:    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;    }     return config_props(outlink);} 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,     .inputs    = (AVFilterPad[]) {{ .name = NULL}},     .outputs   = (AVFilterPad[]) {{ .name = "default",                                    .type = AVMEDIA_TYPE_VIDEO,                                    .request_frame = request_frame,                                    .config_props  = rgbtest_config_props, },                                  { .name = NULL }},}; 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