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FFmpeg/libavfilter/vsrc_mptestsrc.c

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/*
* Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License for more details.
*
* You should have received a copy of the GNU 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
* MP test source, ported from MPlayer libmpcodecs/vf_test.c
*/
#include "libavutil/avstring.h"
#include "libavutil/opt.h"
#include "libavutil/parseutils.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#define WIDTH 512
#define HEIGHT 512
enum test_type {
TEST_DC_LUMA,
TEST_DC_CHROMA,
TEST_FREQ_LUMA,
TEST_FREQ_CHROMA,
TEST_AMP_LUMA,
TEST_AMP_CHROMA,
TEST_CBP,
TEST_MV,
TEST_RING1,
TEST_RING2,
TEST_ALL,
TEST_NB
};
typedef struct MPTestContext {
const AVClass *class;
unsigned int frame_nb;
AVRational time_base;
int64_t pts, max_pts;
int hsub, vsub;
char *size, *rate, *duration;
enum test_type test;
} MPTestContext;
#define OFFSET(x) offsetof(MPTestContext, x)
static const AVOption mptestsrc_options[]= {
{ "rate", "set video rate", OFFSET(rate), AV_OPT_TYPE_STRING, {.str = "25"}, 0, 0 },
{ "r", "set video rate", OFFSET(rate), AV_OPT_TYPE_STRING, {.str = "25"}, 0, 0 },
{ "duration", "set video duration", OFFSET(duration), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0 },
{ "d", "set video duration", OFFSET(duration), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0 },
{ "test", "set test to perform", OFFSET(test), AV_OPT_TYPE_INT, {.dbl=TEST_ALL}, 0, INT_MAX, 0, "test" },
{ "t", "set test to perform", OFFSET(test), AV_OPT_TYPE_INT, {.dbl=TEST_ALL}, 0, INT_MAX, 0, "test" },
{ "dc_luma", "", 0, AV_OPT_TYPE_CONST, {.dbl=TEST_DC_LUMA}, INT_MIN, INT_MAX, 0, "test" },
{ "dc_chroma", "", 0, AV_OPT_TYPE_CONST, {.dbl=TEST_DC_CHROMA}, INT_MIN, INT_MAX, 0, "test" },
{ "freq_luma", "", 0, AV_OPT_TYPE_CONST, {.dbl=TEST_FREQ_LUMA}, INT_MIN, INT_MAX, 0, "test" },
{ "freq_chroma", "", 0, AV_OPT_TYPE_CONST, {.dbl=TEST_FREQ_CHROMA}, INT_MIN, INT_MAX, 0, "test" },
{ "amp_luma", "", 0, AV_OPT_TYPE_CONST, {.dbl=TEST_AMP_LUMA}, INT_MIN, INT_MAX, 0, "test" },
{ "amp_chroma", "", 0, AV_OPT_TYPE_CONST, {.dbl=TEST_AMP_CHROMA}, INT_MIN, INT_MAX, 0, "test" },
{ "cbp", "", 0, AV_OPT_TYPE_CONST, {.dbl=TEST_CBP}, INT_MIN, INT_MAX, 0, "test" },
{ "mv", "", 0, AV_OPT_TYPE_CONST, {.dbl=TEST_MV}, INT_MIN, INT_MAX, 0, "test" },
{ "ring1", "", 0, AV_OPT_TYPE_CONST, {.dbl=TEST_RING1}, INT_MIN, INT_MAX, 0, "test" },
{ "ring2", "", 0, AV_OPT_TYPE_CONST, {.dbl=TEST_RING2}, INT_MIN, INT_MAX, 0, "test" },
{ "all", "", 0, AV_OPT_TYPE_CONST, {.dbl=TEST_ALL}, INT_MIN, INT_MAX, 0, "test" },
{ NULL },
};
static const char *mptestsrc_get_name(void *ctx)
{
return "mptestsrc";
}
static const AVClass mptestsrc_class = {
"MPTestContext",
mptestsrc_get_name,
mptestsrc_options
};
static double c[64];
static void init_idct(void)
{
int i, j;
for (i = 0; i < 8; i++) {
double s = i == 0 ? sqrt(0.125) : 0.5;
for (j = 0; j < 8; j++)
c[i*8+j] = s*cos((M_PI/8.0)*i*(j+0.5));
}
}
static void idct(uint8_t *dst, int dst_linesize, int src[64])
{
int i, j, k;
double tmp[64];
for (i = 0; i < 8; i++) {
for (j = 0; j < 8; j++) {
double sum = 0.0;
for (k = 0; k < 8; k++)
sum += c[k*8+j] * src[8*i+k];
tmp[8*i+j] = sum;
}
}
for (j = 0; j < 8; j++) {
for (i = 0; i < 8; i++) {
double sum = 0.0;
for (k = 0; k < 8; k++)
sum += c[k*8+i]*tmp[8*k+j];
dst[dst_linesize*i + j] = av_clip((int)floor(sum+0.5), 0, 255);
}
}
}
static void draw_dc(uint8_t *dst, int dst_linesize, int color, int w, int h)
{
int x, y;
for (y = 0; y < h; y++)
for (x = 0; x < w; x++)
dst[x + y*dst_linesize] = color;
}
static void draw_basis(uint8_t *dst, int dst_linesize, int amp, int freq, int dc)
{
int src[64];
memset(src, 0, 64*sizeof(int));
src[0] = dc;
if (amp)
src[freq] = amp;
idct(dst, dst_linesize, src);
}
static void draw_cbp(uint8_t *dst[3], int dst_linesize[3], int cbp, int amp, int dc)
{
if (cbp&1) draw_basis(dst[0] , dst_linesize[0], amp, 1, dc);
if (cbp&2) draw_basis(dst[0]+8 , dst_linesize[0], amp, 1, dc);
if (cbp&4) draw_basis(dst[0]+ 8*dst_linesize[0], dst_linesize[0], amp, 1, dc);
if (cbp&8) draw_basis(dst[0]+8+8*dst_linesize[0], dst_linesize[0], amp, 1, dc);
if (cbp&16) draw_basis(dst[1] , dst_linesize[1], amp, 1, dc);
if (cbp&32) draw_basis(dst[2] , dst_linesize[2], amp, 1, dc);
}
static void dc_test(uint8_t *dst, int dst_linesize, int w, int h, int off)
{
const int step = FFMAX(256/(w*h/256), 1);
int x, y, color = off;
for (y = 0; y < h; y += 16) {
for (x = 0; x < w; x += 16) {
draw_dc(dst + x + y*dst_linesize, dst_linesize, color, 8, 8);
color += step;
}
}
}
static void freq_test(uint8_t *dst, int dst_linesize, int off)
{
int x, y, freq = 0;
for (y = 0; y < 8*16; y += 16) {
for (x = 0; x < 8*16; x += 16) {
draw_basis(dst + x + y*dst_linesize, dst_linesize, 4*(96+off), freq, 128*8);
freq++;
}
}
}
static void amp_test(uint8_t *dst, int dst_linesize, int off)
{
int x, y, amp = off;
for (y = 0; y < 16*16; y += 16) {
for (x = 0; x < 16*16; x += 16) {
draw_basis(dst + x + y*dst_linesize, dst_linesize, 4*amp, 1, 128*8);
amp++;
}
}
}
static void cbp_test(uint8_t *dst[3], int dst_linesize[3], int off)
{
int x, y, cbp = 0;
for (y = 0; y < 16*8; y += 16) {
for (x = 0; x < 16*8; x += 16) {
uint8_t *dst1[3];
dst1[0] = dst[0] + x*2 + y*2*dst_linesize[0];
dst1[1] = dst[1] + x + y* dst_linesize[1];
dst1[2] = dst[2] + x + y* dst_linesize[2];
draw_cbp(dst1, dst_linesize, cbp, (64+off)*4, 128*8);
cbp++;
}
}
}
static void mv_test(uint8_t *dst, int dst_linesize, int off)
{
int x, y;
for (y = 0; y < 16*16; y++) {
if (y&16)
continue;
for (x = 0; x < 16*16; x++)
dst[x + y*dst_linesize] = x + off*8/(y/32+1);
}
}
static void ring1_test(uint8_t *dst, int dst_linesize, int off)
{
int x, y, color = 0;
for (y = off; y < 16*16; y += 16) {
for (x = off; x < 16*16; x += 16) {
draw_dc(dst + x + y*dst_linesize, dst_linesize, ((x+y)&16) ? color : -color, 16, 16);
color++;
}
}
}
static void ring2_test(uint8_t *dst, int dst_linesize, int off)
{
int x, y;
for (y = 0; y < 16*16; y++) {
for (x = 0; x < 16*16; x++) {
double d = sqrt((x-8*16)*(x-8*16) + (y-8*16)*(y-8*16));
double r = d/20 - (int)(d/20);
if (r < off/30.0) {
dst[x + y*dst_linesize] = 255;
dst[x + y*dst_linesize+256] = 0;
} else {
dst[x + y*dst_linesize] = x;
dst[x + y*dst_linesize+256] = x;
}
}
}
}
static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
{
MPTestContext *test = ctx->priv;
AVRational frame_rate_q;
int64_t duration = -1;
int ret;
test->class = &mptestsrc_class;
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_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->frame_nb = 0;
test->pts = 0;
av_log(ctx, AV_LOG_INFO, "rate:%d/%d duration:%f\n",
frame_rate_q.num, frame_rate_q.den,
duration < 0 ? -1 : test->max_pts * av_q2d(test->time_base));
init_idct();
return 0;
}
static int config_props(AVFilterLink *outlink)
{
AVFilterContext *ctx = outlink->src;
MPTestContext *test = ctx->priv;
const AVPixFmtDescriptor *pix_desc = &av_pix_fmt_descriptors[outlink->format];
test->hsub = pix_desc->log2_chroma_w;
test->vsub = pix_desc->log2_chroma_h;
outlink->w = WIDTH;
outlink->h = HEIGHT;
outlink->time_base = test->time_base;
return 0;
}
static int query_formats(AVFilterContext *ctx)
{
static const enum PixelFormat pix_fmts[] = {
PIX_FMT_YUV420P, PIX_FMT_NONE
};
avfilter_set_common_pixel_formats(ctx, avfilter_make_format_list(pix_fmts));
return 0;
}
static int request_frame(AVFilterLink *outlink)
{
MPTestContext *test = outlink->src->priv;
AVFilterBufferRef *picref;
int w = WIDTH, h = HEIGHT, ch = h>>test->vsub;
unsigned int frame = test->frame_nb;
enum test_type tt = test->test;
if (test->max_pts >= 0 && test->pts > test->max_pts)
return AVERROR_EOF;
picref = avfilter_get_video_buffer(outlink, AV_PERM_WRITE, w, h);
picref->pts = test->pts++;
// clean image
memset(picref->data[0], 0, picref->linesize[0] * h);
memset(picref->data[1], 128, picref->linesize[1] * ch);
memset(picref->data[2], 128, picref->linesize[2] * ch);
if (tt == TEST_ALL && frame%30) /* draw a black frame at the beginning of each test */
tt = (frame/30)%(TEST_NB-1);
switch (tt) {
case TEST_DC_LUMA: dc_test(picref->data[0], picref->linesize[0], 256, 256, frame%30); break;
case TEST_DC_CHROMA: dc_test(picref->data[1], picref->linesize[1], 256, 256, frame%30); break;
case TEST_FREQ_LUMA: freq_test(picref->data[0], picref->linesize[0], frame%30); break;
case TEST_FREQ_CHROMA: freq_test(picref->data[1], picref->linesize[1], frame%30); break;
case TEST_AMP_LUMA: amp_test(picref->data[0], picref->linesize[0], frame%30); break;
case TEST_AMP_CHROMA: amp_test(picref->data[1], picref->linesize[1], frame%30); break;
case TEST_CBP: cbp_test(picref->data , picref->linesize , frame%30); break;
case TEST_MV: mv_test(picref->data[0], picref->linesize[0], frame%30); break;
case TEST_RING1: ring1_test(picref->data[0], picref->linesize[0], frame%30); break;
case TEST_RING2: ring2_test(picref->data[0], picref->linesize[0], frame%30); break;
}
test->frame_nb++;
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;
}
AVFilter avfilter_vsrc_mptestsrc = {
.name = "mptestsrc",
.description = NULL_IF_CONFIG_SMALL("Generate various test pattern."),
.priv_size = sizeof(MPTestContext),
.init = init,
.query_formats = query_formats,
.inputs = (AVFilterPad[]) {{ .name = NULL}},
.outputs = (AVFilterPad[]) {{ .name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_props,
.request_frame = request_frame,
.config_props = config_props, },
{ .name = NULL }},
};
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