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FFmpeg/libavfilter/vsrc_testsrc.c

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/*
* 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/common.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, AVFrame *frame);
/* only used by rgbtest */
int rgba_map[4];
} TestSourceContext;
#define OFFSET(x) offsetof(TestSourceContext, x)
#define FLAGS AV_OPT_FLAG_VIDEO_PARAM
static const AVOption testsrc_options[] = {
{ "size", "set video size", OFFSET(size), AV_OPT_TYPE_STRING, {.str = "320x240"}, .flags = FLAGS },
{ "s", "set video size", OFFSET(size), AV_OPT_TYPE_STRING, {.str = "320x240"}, .flags = FLAGS },
{ "rate", "set video rate", OFFSET(rate), AV_OPT_TYPE_STRING, {.str = "25"}, .flags = FLAGS },
{ "r", "set video rate", OFFSET(rate), AV_OPT_TYPE_STRING, {.str = "25"}, .flags = FLAGS },
{ "duration", "set video duration", OFFSET(duration), AV_OPT_TYPE_STRING, {.str = NULL}, .flags = FLAGS },
{ "sar", "set video sample aspect ratio", OFFSET(sar), AV_OPT_TYPE_RATIONAL, {.dbl = 1}, 0, INT_MAX, FLAGS },
{ NULL },
};
static av_cold int init_common(AVFilterContext *ctx)
{
TestSourceContext *test = ctx->priv;
AVRational frame_rate_q;
int64_t duration = -1;
int ret = 0;
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;
AVFrame *frame;
if (test->max_pts >= 0 && test->pts > test->max_pts)
return AVERROR_EOF;
frame = ff_get_video_buffer(outlink, test->w, test->h);
if (!frame)
return AVERROR(ENOMEM);
frame->pts = test->pts++;
frame->key_frame = 1;
frame->interlaced_frame = 0;
frame->pict_type = AV_PICTURE_TYPE_I;
frame->sample_aspect_ratio = test->sar;
test->nb_frame++;
test->fill_picture_fn(outlink->src, frame);
return ff_filter_frame(outlink, frame);
}
#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, AVFrame *frame)
{
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 = frame->data[0];
int width = frame->width;
int height = frame->height;
/* 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 += frame->linesize[0];
}
/* draw sliding color line */
p = data + frame->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 - frame->linesize[0], 3 * width);
p += frame->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 * frame->linesize[0]);
for (i = 0; i < 8; i++) {
p -= 3 * 8 * seg_size;
draw_digit(second % 10, p, frame->linesize[0], seg_size);
second /= 10;
if (second == 0)
break;
}
}
}
static av_cold int test_init(AVFilterContext *ctx)
{
TestSourceContext *test = ctx->priv;
test->fill_picture_fn = test_fill_picture;
return init_common(ctx);
}
static int test_query_formats(AVFilterContext *ctx)
{
static const enum AVPixelFormat pix_fmts[] = {
AV_PIX_FMT_RGB24, AV_PIX_FMT_NONE
};
ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
return 0;
}
static const AVFilterPad avfilter_vsrc_testsrc_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.request_frame = request_frame,
.config_props = config_props,
},
{ NULL }
};
AVFilter avfilter_vsrc_testsrc = {
.name = "testsrc",
.description = NULL_IF_CONFIG_SMALL("Generate test pattern."),
.priv_size = sizeof(TestSourceContext),
.priv_class = &testsrc_class,
.init = test_init,
.query_formats = test_query_formats,
.inputs = NULL,
.outputs = avfilter_vsrc_testsrc_outputs,
};
#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 AVPixelFormat fmt,
int rgba_map[4])
{
int32_t v;
uint8_t *p;
switch (fmt) {
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:
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 AV_PIX_FMT_RGBA:
case AV_PIX_FMT_BGRA:
case AV_PIX_FMT_ARGB:
case AV_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, AVFrame *frame)
{
TestSourceContext *test = ctx->priv;
int x, y, w = frame->width, h = frame->height;
for (y = 0; y < h; y++) {
for (x = 0; x < 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(frame->data[0], frame->linesize[0], x, y, r, g, b,
ctx->outputs[0]->format, test->rgba_map);
}
}
}
static av_cold int rgbtest_init(AVFilterContext *ctx)
{
TestSourceContext *test = ctx->priv;
test->fill_picture_fn = rgbtest_fill_picture;
return init_common(ctx);
}
static int rgbtest_query_formats(AVFilterContext *ctx)
{
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
};
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 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;
}
return config_props(outlink);
}
static const AVFilterPad avfilter_vsrc_rgbtestsrc_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.request_frame = request_frame,
.config_props = rgbtest_config_props,
},
{ NULL }
};
AVFilter avfilter_vsrc_rgbtestsrc = {
.name = "rgbtestsrc",
.description = NULL_IF_CONFIG_SMALL("Generate RGB test pattern."),
.priv_size = sizeof(TestSourceContext),
.priv_class = &rgbtestsrc_class,
.init = rgbtest_init,
.query_formats = rgbtest_query_formats,
.inputs = NULL,
.outputs = avfilter_vsrc_rgbtestsrc_outputs,
};
#endif /* CONFIG_RGBTESTSRC_FILTER */
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