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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/imgutils.h"
#include "libavutil/mem.h"
#include "libavutil/avutil.h"
#include "libavutil/crc.h"
#include "libavutil/pixdesc.h"
#include "libavutil/lfg.h"
#include "swscale.h"
/* HACK Duplicated from swscale_internal.h.
* Should be removed when a cleaner pixel format system exists. */
#define isGray(x) \
((x) == PIX_FMT_GRAY8 || \
(x) == PIX_FMT_Y400A || \
(x) == PIX_FMT_GRAY16BE || \
(x) == PIX_FMT_GRAY16LE)
#define hasChroma(x) \
(!(isGray(x) || \
(x) == PIX_FMT_MONOBLACK || \
(x) == PIX_FMT_MONOWHITE))
#define isALPHA(x) \
((x) == PIX_FMT_BGR32 || \
(x) == PIX_FMT_BGR32_1 || \
(x) == PIX_FMT_RGB32 || \
(x) == PIX_FMT_RGB32_1 || \
(x) == PIX_FMT_YUVA420P)
static uint64_t getSSD(uint8_t *src1, 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;
}
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(uint8_t *ref[4], int refStride[4], int w, int h,
enum PixelFormat srcFormat, enum PixelFormat dstFormat,
int srcW, int srcH, int dstW, int dstH, int flags,
struct Results *r)
{
static enum PixelFormat cur_srcFormat;
static int cur_srcW, cur_srcH;
static uint8_t *src[4];
static int srcStride[4];
uint8_t *dst[4] = { 0 };
uint8_t *out[4] = { 0 };
int dstStride[4];
int i;
uint64_t ssdY, ssdU = 0, ssdV = 0, ssdA = 0;
struct SwsContext *dstContext = NULL, *outContext = NULL;
uint32_t crc = 0;
int res = 0;
if (cur_srcFormat != srcFormat || cur_srcW != srcW || cur_srcH != srcH) {
struct SwsContext *srcContext = NULL;
int p;
for (p = 0; p < 4; p++)
av_freep(&src[p]);
av_image_fill_linesizes(srcStride, srcFormat, srcW);
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, PIX_FMT_YUVA420P, srcW, srcH,
srcFormat, SWS_BILINEAR, NULL, NULL, NULL);
if (!srcContext) {
fprintf(stderr, "Failed to get %s ---> %s\n",
av_pix_fmt_descriptors[PIX_FMT_YUVA420P].name,
av_pix_fmt_descriptors[srcFormat].name);
res = -1;
goto end;
}
sws_scale(srcContext, ref, refStride, 0, h, src, srcStride);
sws_freeContext(srcContext);
cur_srcFormat = srcFormat;
cur_srcW = srcW;
cur_srcH = srcH;
}
av_image_fill_linesizes(dstStride, dstFormat, dstW);
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_getContext(srcW, srcH, srcFormat, dstW, dstH, dstFormat,
flags, NULL, NULL, NULL);
if (!dstContext) {
fprintf(stderr, "Failed to get %s ---> %s\n",
av_pix_fmt_descriptors[srcFormat].name,
av_pix_fmt_descriptors[dstFormat].name);
res = -1;
goto end;
}
printf(" %s %dx%d -> %s %3dx%3d flags=%2d",
av_pix_fmt_descriptors[srcFormat].name, srcW, srcH,
av_pix_fmt_descriptors[dstFormat].name, dstW, dstH,
flags);
fflush(stdout);
sws_scale(dstContext, 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,
PIX_FMT_YUVA420P, SWS_BILINEAR,
NULL, NULL, NULL);
if (!outContext) {
fprintf(stderr, "Failed to get %s ---> %s\n",
av_pix_fmt_descriptors[dstFormat].name,
av_pix_fmt_descriptors[PIX_FMT_YUVA420P].name);
res = -1;
goto end;
}
sws_scale(outContext, 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);
}
if (isALPHA(srcFormat) && isALPHA(dstFormat))
ssdA = getSSD(ref[3], out[3], refStride[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]);
}
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(uint8_t *ref[4], int refStride[4], int w, int h,
enum PixelFormat srcFormat_in,
enum PixelFormat dstFormat_in)
{
const int flags[] = { SWS_FAST_BILINEAR, SWS_BILINEAR, SWS_BICUBIC,
SWS_X, SWS_POINT, SWS_AREA, 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 PixelFormat srcFormat, dstFormat;
for (srcFormat = srcFormat_in != PIX_FMT_NONE ? srcFormat_in : 0;
srcFormat < PIX_FMT_NB; srcFormat++) {
if (!sws_isSupportedInput(srcFormat) ||
!sws_isSupportedOutput(srcFormat))
continue;
for (dstFormat = dstFormat_in != PIX_FMT_NONE ? dstFormat_in : 0;
dstFormat < PIX_FMT_NB; dstFormat++) {
int i, j, k;
int res = 0;
if (!sws_isSupportedInput(dstFormat) ||
!sws_isSupportedOutput(dstFormat))
continue;
printf("%s -> %s\n",
av_pix_fmt_descriptors[srcFormat].name,
av_pix_fmt_descriptors[dstFormat].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 != PIX_FMT_NONE)
break;
}
if (srcFormat_in != PIX_FMT_NONE)
break;
}
}
static int fileTest(uint8_t *ref[4], int refStride[4], int w, int h, FILE *fp,
enum PixelFormat srcFormat_in,
enum PixelFormat dstFormat_in)
{
char buf[256];
while (fgets(buf, sizeof(buf), fp)) {
struct Results r;
enum PixelFormat srcFormat;
char srcStr[12];
int srcW, srcH;
enum PixelFormat dstFormat;
char dstStr[12];
int dstW, dstH;
int flags;
int ret;
ret = sscanf(buf,
" %12s %dx%d -> %12s %dx%d flags=%d CRC=%x"
" SSD=%"PRId64 ", %"PRId64 ", %"PRId64 ", %"PRId64 "\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, "%12s -> %12s\n", srcStr, dstStr);
}
srcFormat = av_get_pix_fmt(srcStr);
dstFormat = av_get_pix_fmt(dstStr);
if (srcFormat == PIX_FMT_NONE || dstFormat == PIX_FMT_NONE) {
fprintf(stderr, "malformed input file\n");
return -1;
}
if ((srcFormat_in != PIX_FMT_NONE && srcFormat_in != srcFormat) ||
(dstFormat_in != 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 PixelFormat srcFormat = PIX_FMT_NONE;
enum PixelFormat dstFormat = PIX_FMT_NONE;
uint8_t *rgb_data = av_malloc(W * H * 4);
uint8_t *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);
uint8_t *src[4] = { data, data + W * H, data + W * H * 2, data + W * H * 3 };
int stride[4] = { W, W, W, W };
int x, y;
struct SwsContext *sws;
AVLFG rand;
int res = -1;
int i;
if (!rgb_data || !data)
return -1;
sws = sws_getContext(W / 12, H / 12, PIX_FMT_RGB32, W, H,
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);
sws_scale(sws, rgb_src, rgb_stride, 0, H, src, stride);
sws_freeContext(sws);
av_free(rgb_data);
for (i = 1; i < argc; i += 2) {
if (argv[i][0] != '-' || i + 1 == argc)
goto bad_option;
if (!strcmp(argv[i], "-ref")) {
FILE *fp = fopen(argv[i + 1], "r");
if (!fp) {
fprintf(stderr, "could not open '%s'\n", argv[i + 1]);
goto error;
}
res = fileTest(src, stride, W, H, fp, srcFormat, dstFormat);
fclose(fp);
goto end;
} else if (!strcmp(argv[i], "-src")) {
srcFormat = av_get_pix_fmt(argv[i + 1]);
if (srcFormat == 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 == PIX_FMT_NONE) {
fprintf(stderr, "invalid pixel format %s\n", argv[i + 1]);
return -1;
}
} else {
bad_option:
fprintf(stderr, "bad option or argument missing (%s)\n", argv[i]);
goto error;
}
}
selfTest(src, stride, W, H, srcFormat, dstFormat);
end:
res = 0;
error:
av_free(data);
return res;
}
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