From 2f222b95506349f78c0124eb72489dc61d2c6218 Mon Sep 17 00:00:00 2001 From: Stefano Sabatini Date: Sat, 18 Jun 2011 03:11:16 +0200 Subject: [PATCH] lavfi: add testsrc source --- doc/filters.texi | 43 +++++ libavfilter/Makefile | 1 + libavfilter/allfilters.c | 1 + libavfilter/avfilter.h | 2 +- libavfilter/vsrc_testsrc.c | 338 +++++++++++++++++++++++++++++++++++++ 5 files changed, 384 insertions(+), 1 deletion(-) create mode 100644 libavfilter/vsrc_testsrc.c diff --git a/doc/filters.texi b/doc/filters.texi index eb31714486..b4ffcd9a04 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -1970,6 +1970,49 @@ Some examples follow: frei0r_src=200x200:10:partik0l=1234 [overlay]; [in][overlay] overlay @end example +@section testsrc + +Generate a test video pattern, showing a color pattern, a scrolling +gradient and a timestamp. This is mainly intended for testing +purposes. + +It accepts an optional sequence of @var{key}=@var{value} pairs, +separated by ":". The description of the accepted options follows. + +@table @option + +@item size, s +Specify the size of the sourced video, it may be a string of the form +@var{width}x@var{heigth}, or the name of a size abbreviation. The +default value is "320x240". + +@item rate, r +Specify the frame rate of the sourced video, as the number of frames +generated per second. It has to be a string in the format +@var{frame_rate_num}/@var{frame_rate_den}, an integer number, a float +number or a valid video frame rate abbreviation. The default value is +"25". + +@item duration +Set the video duration of the sourced video. The accepted syntax is: +@example +[-]HH[:MM[:SS[.m...]]] +[-]S+[.m...] +@end example +See also the function @code{av_parse_time()}. + +If not specified, or the expressed duration is negative, the video is +supposed to be generated forever. +@end table + +For example the following: +@example +testsrc=duration=5.3:size=qcif:rate=10 +@end example + +will generate a video with a duration of 5.3 seconds, with size +176x144 and a framerate of 10 frames per second. + @c man end VIDEO SOURCES @chapter Video Sinks diff --git a/libavfilter/Makefile b/libavfilter/Makefile index 461df37a10..d2e59f9049 100644 --- a/libavfilter/Makefile +++ b/libavfilter/Makefile @@ -68,6 +68,7 @@ OBJS-$(CONFIG_COLOR_FILTER) += vsrc_color.o OBJS-$(CONFIG_FREI0R_SRC_FILTER) += vf_frei0r.o OBJS-$(CONFIG_MOVIE_FILTER) += vsrc_movie.o OBJS-$(CONFIG_NULLSRC_FILTER) += vsrc_nullsrc.o +OBJS-$(CONFIG_TESTSRC_FILTER) += vsrc_testsrc.o OBJS-$(CONFIG_BUFFERSINK_FILTER) += vsink_buffer.o OBJS-$(CONFIG_NULLSINK_FILTER) += vsink_nullsink.o diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c index 42047ecbe8..feae239626 100644 --- a/libavfilter/allfilters.c +++ b/libavfilter/allfilters.c @@ -84,6 +84,7 @@ void avfilter_register_all(void) REGISTER_FILTER (FREI0R, frei0r_src, vsrc); REGISTER_FILTER (MOVIE, movie, vsrc); REGISTER_FILTER (NULLSRC, nullsrc, vsrc); + REGISTER_FILTER (TESTSRC, testsrc, vsrc); REGISTER_FILTER (BUFFER, buffersink, vsink); REGISTER_FILTER (NULLSINK, nullsink, vsink); diff --git a/libavfilter/avfilter.h b/libavfilter/avfilter.h index c276f3037e..5d25c72289 100644 --- a/libavfilter/avfilter.h +++ b/libavfilter/avfilter.h @@ -26,7 +26,7 @@ #include "libavutil/samplefmt.h" #define LIBAVFILTER_VERSION_MAJOR 2 -#define LIBAVFILTER_VERSION_MINOR 23 +#define LIBAVFILTER_VERSION_MINOR 24 #define LIBAVFILTER_VERSION_MICRO 0 #define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \ diff --git a/libavfilter/vsrc_testsrc.c b/libavfilter/vsrc_testsrc.c new file mode 100644 index 0000000000..6f2c3cf166 --- /dev/null +++ b/libavfilter/vsrc_testsrc.c @@ -0,0 +1,338 @@ +/* + * Copyright (c) 2007 Nicolas George + * Copyright (c) 2011 Stefano Sabatini + * + * This file is part of FFmpeg. + * + * FFmpeg 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. + * + * FFmpeg 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 FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * Based on the test pattern generator demuxer by Nicolas George: + * http://lists.mplayerhq.hu/pipermail/ffmpeg-devel/2007-October/037845.html + */ + +#include + +#include "libavutil/opt.h" +#include "libavutil/parseutils.h" +#include "avfilter.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 +} TestSourceContext; + +#define OFFSET(x) offsetof(TestSourceContext, x) + +static const AVOption testsrc_options[]= { + { "size", "set video size", OFFSET(size), FF_OPT_TYPE_STRING, {.str = "320x240"}, 0, 0 }, + { "s", "set video size", OFFSET(size), FF_OPT_TYPE_STRING, {.str = "320x240"}, 0, 0 }, + { "rate", "set video rate", OFFSET(rate), FF_OPT_TYPE_STRING, {.str = "25"}, 0, 0 }, + { "r", "set video rate", OFFSET(rate), FF_OPT_TYPE_STRING, {.str = "25"}, 0, 0 }, + { "duration", "set video duration", OFFSET(duration), FF_OPT_TYPE_STRING, {.str = NULL}, 0, 0 }, + { NULL }, +}; + +static const char *testsrc_get_name(void *ctx) +{ + return "testsrc"; +} + +static const AVClass testsrc_class = { + "TestSourceContext", + testsrc_get_name, + testsrc_options +}; + +static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque) +{ + TestSourceContext *test = ctx->priv; + AVRational frame_rate_q; + int64_t duration = -1; + int ret = 0; + + test->class = &testsrc_class; + av_opt_set_defaults2(test, 0, 0); + + 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_INFO, "size:%dx%d rate:%d/%d duration:%f\n", + test->w, test->h, frame_rate_q.num, frame_rate_q.den, + duration < 0 ? -1 : test->max_pts * av_q2d(test->time_base)); + return 0; +} + +static int config_props(AVFilterLink *outlink) +{ + TestSourceContext *test = outlink->src->priv; + + outlink->w = test->w; + outlink->h = test->h; + outlink->time_base = test->time_base; + + return 0; +} + +/** + * 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<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 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 = avfilter_get_video_buffer(outlink, AV_PERM_WRITE, + test->w, test->h); + picref->pts = test->pts++; + test->nb_frame++; + fill_picture(test, picref); + + avfilter_start_frame(outlink, avfilter_ref_buffer(picref, ~0)); + avfilter_draw_slice(outlink, 0, picref->video->h, 1); + avfilter_end_frame(outlink); + avfilter_unref_buffer(picref); + + return 0; +} + +static int query_formats(AVFilterContext *ctx) +{ + static const enum PixelFormat pix_fmts[] = { + PIX_FMT_RGB24, PIX_FMT_NONE + }; + avfilter_set_common_pixel_formats(ctx, avfilter_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 = init, + + .query_formats = query_formats, + + .inputs = (AVFilterPad[]) {{ .name = NULL}}, + + .outputs = (AVFilterPad[]) {{ .name = "default", + .type = AVMEDIA_TYPE_VIDEO, + .request_frame = request_frame, + .config_props = config_props, }, + { .name = NULL }}, +};