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ffmpeg/libswscale/tests/swscale.c

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/*
* Copyright (C) 2003-2011 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 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
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>
#include <stdarg.h>
#undef HAVE_AV_CONFIG_H
#include "libavutil/cpu.h"
#include "libavutil/imgutils.h"
#include "libavutil/mem.h"
#include "libavutil/avutil.h"
#include "libavutil/crc.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libavutil/lfg.h"
#include "libavutil/sfc64.h"
#include "libswscale/swscale.h"
/* HACK Duplicated from swscale_internal.h.
* Should be removed when a cleaner pixel format system exists. */
#define isGray(x) \
((x) == AV_PIX_FMT_GRAY8 || \
(x) == AV_PIX_FMT_YA8 || \
(x) == AV_PIX_FMT_GRAY16BE || \
(x) == AV_PIX_FMT_GRAY16LE || \
(x) == AV_PIX_FMT_YA16BE || \
(x) == AV_PIX_FMT_YA16LE)
#define hasChroma(x) \
(!(isGray(x) || \
(x) == AV_PIX_FMT_MONOBLACK || \
(x) == AV_PIX_FMT_MONOWHITE))
static av_always_inline int isALPHA(enum AVPixelFormat pix_fmt)
{
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
return desc->flags & AV_PIX_FMT_FLAG_ALPHA;
}
static double prob = 1;
FFSFC64 prng_state;
static uint64_t getSSD(const uint8_t *src1, const uint8_t *src2,
int stride1, int stride2, int w, int h)
{
int x, y;
uint64_t ssd = 0;
for (y = 0; y < h; y++) {
for (x = 0; x < w; x++) {
int d = src1[x + y * stride1] - src2[x + y * stride2];
ssd += d * d;
}
}
return ssd;
}
static uint64_t getSSD0(int ref, const uint8_t *src1, int stride1,
int w, int h)
{
int x, y;
uint64_t ssd = 0;
for (y = 0; y < h; y++) {
for (x = 0; x < w; x++) {
int d = src1[x + y * stride1] - ref;
ssd += d * d;
}
}
return ssd;
}
struct Results {
uint64_t ssdY;
uint64_t ssdU;
uint64_t ssdV;
uint64_t ssdA;
uint32_t crc;
};
// test by ref -> src -> dst -> out & compare out against ref
// ref & out are YV12
static int doTest(const uint8_t * const ref[4], int refStride[4], int w, int h,
enum AVPixelFormat srcFormat, enum AVPixelFormat dstFormat,
int srcW, int srcH, int dstW, int dstH, int flags,
struct Results *r)
{
const AVPixFmtDescriptor *desc_yuva420p = av_pix_fmt_desc_get(AV_PIX_FMT_YUVA420P);
const AVPixFmtDescriptor *desc_src = av_pix_fmt_desc_get(srcFormat);
const AVPixFmtDescriptor *desc_dst = av_pix_fmt_desc_get(dstFormat);
static enum AVPixelFormat cur_srcFormat;
static int cur_srcW, cur_srcH;
static const uint8_t *src[4];
static int srcStride[4];
uint8_t *dst[4] = { 0 };
uint8_t *out[4] = { 0 };
int dstStride[4] = {0};
int i;
uint64_t ssdY, ssdU = 0, ssdV = 0, ssdA = 0;
SwsContext *dstContext = NULL, *outContext = NULL;
uint32_t crc = 0;
int res = 0;
if (ff_sfc64_get(&prng_state) > UINT64_MAX * prob)
return 0;
if (cur_srcFormat != srcFormat || cur_srcW != srcW || cur_srcH != srcH) {
SwsContext *srcContext = NULL;
int p;
for (p = 0; p < 4; p++)
av_freep(&src[p]);
res = av_image_fill_linesizes(srcStride, srcFormat, srcW);
if (res < 0) {
fprintf(stderr, "av_image_fill_linesizes failed\n");
goto end;
}
for (p = 0; p < 4; p++) {
srcStride[p] = FFALIGN(srcStride[p], 16);
if (srcStride[p])
src[p] = av_mallocz(srcStride[p] * srcH + 16);
if (srcStride[p] && !src[p]) {
perror("Malloc");
res = -1;
goto end;
}
}
srcContext = sws_getContext(w, h, AV_PIX_FMT_YUVA420P, srcW, srcH,
srcFormat, SWS_BILINEAR, NULL, NULL, NULL);
if (!srcContext) {
fprintf(stderr, "Failed to get %s ---> %s\n",
desc_yuva420p->name,
desc_src->name);
res = -1;
goto end;
}
sws_scale(srcContext, ref, refStride, 0, h,
(uint8_t * const *) src, srcStride);
sws_freeContext(srcContext);
cur_srcFormat = srcFormat;
cur_srcW = srcW;
cur_srcH = srcH;
}
res = av_image_fill_linesizes(dstStride, dstFormat, dstW);
if (res < 0) {
fprintf(stderr, "av_image_fill_linesizes failed\n");
goto end;
}
for (i = 0; i < 4; i++) {
/* Image buffers passed into libswscale can be allocated any way you
* prefer, as long as they're aligned enough for the architecture, and
* they're freed appropriately (such as using av_free for buffers
* allocated with av_malloc). */
/* An extra 16 bytes is being allocated because some scalers may write
* out of bounds. */
dstStride[i] = FFALIGN(dstStride[i], 16);
if (dstStride[i])
dst[i] = av_mallocz(dstStride[i] * dstH + 16);
if (dstStride[i] && !dst[i]) {
perror("Malloc");
res = -1;
goto end;
}
}
dstContext = sws_alloc_context();
if (!dstContext) {
fprintf(stderr, "Failed to alloc %s ---> %s\n",
desc_src->name, desc_dst->name);
res = -1;
goto end;
}
av_opt_set_int(dstContext, "sws_flags", flags, 0);
av_opt_set_int(dstContext, "srcw", srcW, 0);
av_opt_set_int(dstContext, "srch", srcH, 0);
av_opt_set_int(dstContext, "dstw", dstW, 0);
av_opt_set_int(dstContext, "dsth", dstH, 0);
av_opt_set_int(dstContext, "src_format", srcFormat, 0);
av_opt_set_int(dstContext, "dst_format", dstFormat, 0);
av_opt_set(dstContext, "alphablend", "none", 0);
if (sws_init_context(dstContext, NULL, NULL) < 0) {
sws_freeContext(dstContext);
fprintf(stderr, "Failed to init %s ---> %s\n",
desc_src->name, desc_dst->name);
res = -1;
goto end;
}
printf(" %s %dx%d -> %s %3dx%3d flags=%2d",
desc_src->name, srcW, srcH,
desc_dst->name, dstW, dstH,
flags);
fflush(stdout);
sws_scale(dstContext, (const uint8_t * const*)src, srcStride, 0, srcH, dst, dstStride);
for (i = 0; i < 4 && dstStride[i]; i++)
crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), crc, dst[i],
dstStride[i] * dstH);
if (r && crc == r->crc) {
ssdY = r->ssdY;
ssdU = r->ssdU;
ssdV = r->ssdV;
ssdA = r->ssdA;
} else {
for (i = 0; i < 4; i++) {
refStride[i] = FFALIGN(refStride[i], 16);
if (refStride[i])
out[i] = av_mallocz(refStride[i] * h);
if (refStride[i] && !out[i]) {
perror("Malloc");
res = -1;
goto end;
}
}
outContext = sws_getContext(dstW, dstH, dstFormat, w, h,
AV_PIX_FMT_YUVA420P, SWS_BILINEAR,
NULL, NULL, NULL);
if (!outContext) {
fprintf(stderr, "Failed to get %s ---> %s\n",
desc_dst->name,
desc_yuva420p->name);
res = -1;
goto end;
}
sws_scale(outContext, (const uint8_t * const *) dst, dstStride, 0, dstH,
out, refStride);
ssdY = getSSD(ref[0], out[0], refStride[0], refStride[0], w, h);
if (hasChroma(srcFormat) && hasChroma(dstFormat)) {
//FIXME check that output is really gray
ssdU = getSSD(ref[1], out[1], refStride[1], refStride[1],
(w + 1) >> 1, (h + 1) >> 1);
ssdV = getSSD(ref[2], out[2], refStride[2], refStride[2],
(w + 1) >> 1, (h + 1) >> 1);
} else {
ssdU = getSSD0(128, out[1], refStride[1],
(w + 1) >> 1, (h + 1) >> 1);
ssdV = getSSD0(128, out[2], refStride[2],
(w + 1) >> 1, (h + 1) >> 1);
}
if (isALPHA(srcFormat) && isALPHA(dstFormat)) {
ssdA = getSSD(ref[3], out[3], refStride[3], refStride[3], w, h);
} else {
ssdA = getSSD0(0xFF, out[3], refStride[3], w, h);
}
ssdY /= w * h;
ssdU /= w * h / 4;
ssdV /= w * h / 4;
ssdA /= w * h;
sws_freeContext(outContext);
for (i = 0; i < 4; i++)
if (refStride[i])
av_free(out[i]);
}
if(r){
if(ssdY>r->ssdY*1.02+1 || ssdU>r->ssdU*1.02+1 || ssdV>r->ssdV*1.02+1|| ssdA>r->ssdA*1.02+1)
printf("WORSE SSD=%5"PRId64",%5"PRId64",%5"PRId64",%5"PRId64"",
r->ssdY, r->ssdU, r->ssdV, r->ssdA);
else if(ssdY>r->ssdY || ssdU>r->ssdU || ssdV>r->ssdV|| ssdA>r->ssdA)
printf("worse SSD=%5"PRId64",%5"PRId64",%5"PRId64",%5"PRId64"",
r->ssdY, r->ssdU, r->ssdV, r->ssdA);
}
printf(" CRC=%08x SSD=%5"PRId64 ",%5"PRId64 ",%5"PRId64 ",%5"PRId64 "\n",
crc, ssdY, ssdU, ssdV, ssdA);
end:
sws_freeContext(dstContext);
for (i = 0; i < 4; i++)
if (dstStride[i])
av_free(dst[i]);
return !!res;
}
static void selfTest(const uint8_t * const ref[4], int refStride[4],
int w, int h,
enum AVPixelFormat srcFormat_in,
enum AVPixelFormat dstFormat_in)
{
const int flags[] = { SWS_FAST_BILINEAR,
SWS_BILINEAR, SWS_BICUBIC,
SWS_X|SWS_BITEXACT , SWS_POINT , SWS_AREA|SWS_ACCURATE_RND,
SWS_BICUBIC|SWS_FULL_CHR_H_INT|SWS_FULL_CHR_H_INP, 0};
const int srcW = w;
const int srcH = h;
const int dstW[] = { srcW - srcW / 3, srcW, srcW + srcW / 3, 0 };
const int dstH[] = { srcH - srcH / 3, srcH, srcH + srcH / 3, 0 };
enum AVPixelFormat srcFormat, dstFormat;
const AVPixFmtDescriptor *desc_src, *desc_dst;
for (srcFormat = srcFormat_in != AV_PIX_FMT_NONE ? srcFormat_in : 0;
srcFormat < AV_PIX_FMT_NB; srcFormat++) {
if (!sws_isSupportedInput(srcFormat) ||
!sws_isSupportedOutput(srcFormat))
continue;
desc_src = av_pix_fmt_desc_get(srcFormat);
for (dstFormat = dstFormat_in != AV_PIX_FMT_NONE ? dstFormat_in : 0;
dstFormat < AV_PIX_FMT_NB; dstFormat++) {
int i, j, k;
int res = 0;
if (!sws_isSupportedInput(dstFormat) ||
!sws_isSupportedOutput(dstFormat))
continue;
desc_dst = av_pix_fmt_desc_get(dstFormat);
printf("%s -> %s\n", desc_src->name, desc_dst->name);
fflush(stdout);
for (k = 0; flags[k] && !res; k++)
for (i = 0; dstW[i] && !res; i++)
for (j = 0; dstH[j] && !res; j++)
res = doTest(ref, refStride, w, h,
srcFormat, dstFormat,
srcW, srcH, dstW[i], dstH[j], flags[k],
NULL);
if (dstFormat_in != AV_PIX_FMT_NONE)
break;
}
if (srcFormat_in != AV_PIX_FMT_NONE)
break;
}
}
static int fileTest(const uint8_t * const ref[4], int refStride[4],
int w, int h, FILE *fp,
enum AVPixelFormat srcFormat_in,
enum AVPixelFormat dstFormat_in)
{
char buf[256];
while (fgets(buf, sizeof(buf), fp)) {
struct Results r;
enum AVPixelFormat srcFormat;
char srcStr[21];
int srcW = 0, srcH = 0;
enum AVPixelFormat dstFormat;
char dstStr[21];
int dstW = 0, dstH = 0;
int flags;
int ret;
ret = sscanf(buf,
" %20s %dx%d -> %20s %dx%d flags=%d CRC=%x"
" SSD=%"SCNu64 ", %"SCNu64 ", %"SCNu64 ", %"SCNu64 "\n",
srcStr, &srcW, &srcH, dstStr, &dstW, &dstH,
&flags, &r.crc, &r.ssdY, &r.ssdU, &r.ssdV, &r.ssdA);
if (ret != 12) {
srcStr[0] = dstStr[0] = 0;
ret = sscanf(buf, "%20s -> %20s\n", srcStr, dstStr);
}
srcFormat = av_get_pix_fmt(srcStr);
dstFormat = av_get_pix_fmt(dstStr);
if (srcFormat == AV_PIX_FMT_NONE || dstFormat == AV_PIX_FMT_NONE ||
srcW > 8192U || srcH > 8192U || dstW > 8192U || dstH > 8192U) {
fprintf(stderr, "malformed input file\n");
return -1;
}
if ((srcFormat_in != AV_PIX_FMT_NONE && srcFormat_in != srcFormat) ||
(dstFormat_in != AV_PIX_FMT_NONE && dstFormat_in != dstFormat))
continue;
if (ret != 12) {
printf("%s", buf);
continue;
}
doTest(ref, refStride, w, h,
srcFormat, dstFormat,
srcW, srcH, dstW, dstH, flags,
&r);
}
return 0;
}
#define W 96
#define H 96
int main(int argc, char **argv)
{
enum AVPixelFormat srcFormat = AV_PIX_FMT_NONE;
enum AVPixelFormat dstFormat = AV_PIX_FMT_NONE;
uint8_t *rgb_data = av_malloc(W * H * 4);
const uint8_t * const rgb_src[4] = { rgb_data, NULL, NULL, NULL };
int rgb_stride[4] = { 4 * W, 0, 0, 0 };
uint8_t *data = av_malloc(4 * W * H);
const uint8_t * const src[4] = { data, data + W * H, data + W * H * 2, data + W * H * 3 };
int stride[4] = { W, W, W, W };
int x, y;
SwsContext *sws;
AVLFG rand;
int res = -1;
int i;
FILE *fp = NULL;
if (!rgb_data || !data)
return -1;
for (i = 1; i < argc; i += 2) {
if (!strcmp(argv[i], "-help") || !strcmp(argv[i], "--help")) {
fprintf(stderr,
"swscale [options...]\n"
" -help\n"
" This text\n"
" -ref <file>\n"
" Uses file as reference to compae tests againsts. Tests that have become worse will contain the string worse or WORSE\n"
" -p <number between 0.0 and 1.0>\n"
" The percentage of tests or comparisons to perform. Doing all tests will take long and generate over a hundred MB text output\n"
" It is often convenient to perform a random subset\n"
" -dst <pixfmt>\n"
" Only test the specified destination pixel format\n"
" -src <pixfmt>\n"
" Only test the specified source pixel format\n"
" -cpuflags <cpuflags>\n"
" Uses the specified cpuflags in the tests\n"
);
goto error;
}
if (argv[i][0] != '-' || i + 1 == argc)
goto bad_option;
if (!strcmp(argv[i], "-ref")) {
fp = fopen(argv[i + 1], "r");
if (!fp) {
fprintf(stderr, "could not open '%s'\n", argv[i + 1]);
goto error;
}
} else if (!strcmp(argv[i], "-cpuflags")) {
unsigned flags = av_get_cpu_flags();
int ret = av_parse_cpu_caps(&flags, argv[i + 1]);
if (ret < 0) {
fprintf(stderr, "invalid cpu flags %s\n", argv[i + 1]);
return ret;
}
av_force_cpu_flags(flags);
} else if (!strcmp(argv[i], "-src")) {
srcFormat = av_get_pix_fmt(argv[i + 1]);
if (srcFormat == AV_PIX_FMT_NONE) {
fprintf(stderr, "invalid pixel format %s\n", argv[i + 1]);
return -1;
}
} else if (!strcmp(argv[i], "-dst")) {
dstFormat = av_get_pix_fmt(argv[i + 1]);
if (dstFormat == AV_PIX_FMT_NONE) {
fprintf(stderr, "invalid pixel format %s\n", argv[i + 1]);
return -1;
}
} else if (!strcmp(argv[i], "-p")) {
prob = atof(argv[i + 1]);
} else {
bad_option:
fprintf(stderr, "bad option or argument missing (%s) see -help\n", argv[i]);
goto error;
}
}
ff_sfc64_init(&prng_state, 0, 0, 0, 12);
sws = sws_getContext(W / 12, H / 12, AV_PIX_FMT_RGB32, W, H,
AV_PIX_FMT_YUVA420P, SWS_BILINEAR, NULL, NULL, NULL);
av_lfg_init(&rand, 1);
for (y = 0; y < H; y++)
for (x = 0; x < W * 4; x++)
rgb_data[ x + y * 4 * W] = av_lfg_get(&rand);
res = sws_scale(sws, rgb_src, rgb_stride, 0, H / 12, (uint8_t * const *) src, stride);
if (res < 0 || res != H) {
res = -1;
goto error;
}
sws_freeContext(sws);
av_free(rgb_data);
if(fp) {
res = fileTest(src, stride, W, H, fp, srcFormat, dstFormat);
fclose(fp);
} else {
selfTest(src, stride, W, H, srcFormat, dstFormat);
res = 0;
}
error:
av_free(data);
return res;
}
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