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4d6a8a2bdb19c4380cc458759b7bd221942a028f
ffmpeg/libavfilter/vsrc_mptestsrc.c
Stefano Sabatini 4d6a8a2bdb lavfi: add avfilter_default_filter_name() 
The function is modelled after av_default_item_name(), and will print the
name of the instance filter if defined, otherwise the name of the filter.

This allows to show the instance name in the log, which is useful when
debugging complex filter graphs.
2012-06-04 00:54:57 +02:00

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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 AVClass mptestsrc_class = {
"MPTestContext",
avfilter_default_filter_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 = (const AVFilterPad[]) {{ .name = NULL}},
.outputs = (const AVFilterPad[]) {{ .name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.request_frame = request_frame,
.config_props = config_props, },
{ .name = NULL }},
};
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