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@@ -0,0 +1,296 @@
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+/*
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+ * This file is part of FFmpeg.
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+ *
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+ * FFmpeg is free software; you can redistribute it and/or
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+ * modify it under the terms of the GNU Lesser General Public
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+ * License as published by the Free Software Foundation; either
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+ * version 2.1 of the License, or (at your option) any later version.
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+ *
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+ * FFmpeg is distributed in the hope that it will be useful,
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+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ * Lesser General Public License for more details.
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+ *
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+ * You should have received a copy of the GNU Lesser General Public
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+ * License along with FFmpeg; if not, write to the Free Software
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+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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+ */
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+
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+#include <stdio.h>
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+#include <stdlib.h>
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+#include <string.h>
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+#include <math.h>
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+#include <inttypes.h>
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+#include <float.h>
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+
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+#include "libavutil/avutil.h"
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+#include "libavutil/imgutils.h"
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+#include "libavutil/intfloat.h"
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+#include "libavutil/intreadwrite.h"
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+#include "libavutil/lfg.h"
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+#include "libavutil/mem.h"
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+#include "libavutil/parseutils.h"
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+#include "libavutil/pixdesc.h"
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+
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+#include "libswscale/swscale.h"
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+
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+#define DEFAULT_W 96
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+#define DEFAULT_H 96
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+
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+static const enum AVPixelFormat pix_fmts[] = {
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+ AV_PIX_FMT_YUV444P16LE,
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+ AV_PIX_FMT_YUV444P,
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+ AV_PIX_FMT_YUV444P9LE, AV_PIX_FMT_YUV444P10LE,
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+ AV_PIX_FMT_YUV444P12LE, AV_PIX_FMT_YUV444P14LE,
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+ AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24,
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+ AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA,
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+ AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR,
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+ AV_PIX_FMT_0RGB, AV_PIX_FMT_0BGR,
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+ AV_PIX_FMT_RGB0, AV_PIX_FMT_BGR0,
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+ AV_PIX_FMT_RGB48LE, AV_PIX_FMT_BGR48LE,
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+ AV_PIX_FMT_RGBA64LE, AV_PIX_FMT_BGRA64LE,
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+ AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP,
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+ AV_PIX_FMT_GBRP9LE,
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+ AV_PIX_FMT_GBRP10LE, AV_PIX_FMT_GBRAP10LE,
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+ AV_PIX_FMT_GBRP12LE, AV_PIX_FMT_GBRAP12LE,
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+ AV_PIX_FMT_GBRP14LE,
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+ AV_PIX_FMT_GBRP16LE, AV_PIX_FMT_GBRAP16LE
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+};
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+
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+const char *usage = "floatimg_cmp -pixel_format <pix_fmt> -size <image_size> -ref <testfile>\n";
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+
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+int main(int argc, char **argv)
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+{
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+ enum AVPixelFormat inFormat = AV_PIX_FMT_NONE;
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+ enum AVPixelFormat dstFormat = AV_PIX_FMT_NONE;
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+ const AVPixFmtDescriptor *desc;
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+ uint8_t *ptr;
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+ uint32_t *in, *out;
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+
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+ uint8_t *rgbIn[4] = {NULL, NULL, NULL, NULL};
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+ uint8_t *rgbOut[4] = {NULL, NULL, NULL, NULL};
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+ int rgbStride[4];
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+
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+ uint8_t *dst[4] = {NULL, NULL, NULL, NULL};
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+ int dstStride[4];
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+
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+ int i, x, y, p, size, count;
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+ int res = -1;
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+ int w = -1;
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+ int h = -1;
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+ union av_intfloat32 v0, v1;
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+
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+ double sum;
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+ float minimum, maximum, diff;
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+
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+ struct SwsContext *sws = NULL;
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+ AVLFG rand;
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+ FILE *fp = NULL;
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+
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+ for (i = 1; i < argc; i += 2) {
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+ if (argv[i][0] != '-' || i + 1 == argc)
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+ goto bad_option;
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+ if (!strcmp(argv[i], "-ref")) {
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+ fp = fopen(argv[i + 1], "rb");
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+ if (!fp) {
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+ fprintf(stderr, "could not open '%s'\n", argv[i + 1]);
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+ goto end;
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+ }
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+ } else if (!strcmp(argv[i], "-size")) {
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+ res = av_parse_video_size(&w, &h, argv[i + 1]);
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+ if (res < 0) {
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+ fprintf(stderr, "invalid video size %s\n", argv[i + 1]);
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+ goto end;
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+ }
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+ } else if (!strcmp(argv[i], "-pixel_format")) {
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+ inFormat = av_get_pix_fmt(argv[i + 1]);
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+ if (inFormat == AV_PIX_FMT_NONE) {
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+ fprintf(stderr, "invalid pixel format %s\n", argv[i + 1]);
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+ goto end;
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+ }
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+ } else {
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+bad_option:
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+ fprintf(stderr, "%s", usage);
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+ fprintf(stderr, "bad option or argument missing (%s)\n", argv[i]);
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+ goto end;
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+ };
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+ }
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+
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+ if (!fp) {
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+ inFormat = AV_PIX_FMT_GBRPF32LE;
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+ w = DEFAULT_W;
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+ h = DEFAULT_H;
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+ }
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+
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+ if (w <= 0 || h <= 0) {
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+ fprintf(stderr, "%s", usage);
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+ fprintf(stderr, "invalid -video_size\n");
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+ goto end;
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+ }
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+
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+ if (inFormat == AV_PIX_FMT_NONE) {
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+ fprintf(stderr, "%s", usage);
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+ fprintf(stderr, "invalid input pixel format\n");
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+ goto end;
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+ }
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+
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+ desc = av_pix_fmt_desc_get(inFormat);
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+ if (!(desc->flags & AV_PIX_FMT_FLAG_FLOAT)) {
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+ fprintf(stderr, "input pixel format not floating point.\n");
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+ goto end;
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+ }
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+
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+ res = av_image_fill_linesizes(rgbStride, inFormat, w);
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+ if (res < 0) {
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+ fprintf(stderr, "av_image_fill_linesizes failed\n");
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+ goto end;
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+ }
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+ for (p = 0; p < 4; p++) {
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+ rgbStride[p] = FFALIGN(rgbStride[p], 16);
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+ if (rgbStride[p]) {
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+ rgbIn[p] = av_mallocz(rgbStride[p] * h + 16);
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+ rgbOut[p] = av_mallocz(rgbStride[p] * h + 16);
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+ }
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+ if (rgbStride[p] && (!rgbIn[p] || !rgbOut[p])) {
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+ goto end;
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+ }
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+ }
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+
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+ for (i = 0; i < FF_ARRAY_ELEMS(pix_fmts); i++) {
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+ dstFormat = pix_fmts[i];
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+ if (fp) {
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+ fseek(fp, 0, SEEK_SET);
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+ for (p = 0; p < 4; p++) {
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+ if (!rgbStride[p])
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+ continue;
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+
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+ ptr = rgbIn[p];
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+ for (y = 0; y < h; y++) {
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+ size = fread(ptr, 1, w*4, fp);
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+ if (size != w*4) {
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+ fprintf(stderr, "read error: %d\n", size);
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+ goto end;
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+ }
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+ ptr += rgbStride[p];
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+ }
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+ }
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+ } else {
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+ // fill src with random values between 0.0 - 1.0
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+ av_lfg_init(&rand, 1);
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+ for (p = 0; p < 4; p++) {
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+ if (!rgbStride[p])
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+ continue;
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+
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+ for (y = 0; y < h; y++) {
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+ in = (uint32_t*)(rgbIn[p] + y * rgbStride[p]);
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+ for (x = 0; x < w; x++) {
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+ v0.f = (float)av_lfg_get(&rand)/(float)(UINT32_MAX);
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+ *in++ = AV_RL32(&v0.i);
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+ }
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+ }
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+ }
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+ }
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+
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+ // setup intermediate image
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+ for (p = 0; p < 4; p++) {
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+ av_freep(&dst[p]);
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+ }
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+
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+ res = av_image_fill_linesizes(dstStride, dstFormat, w);
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+ if (res < 0) {
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+ fprintf(stderr, "av_image_fill_linesizes failed\n");
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+ goto end;
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+ }
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+ for (p = 0; p < 4; p++) {
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+ dstStride[p] = FFALIGN(dstStride[p], 16);
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+ if (dstStride[p]) {
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+ dst[p] = av_mallocz(dstStride[p] * h + 16);
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+ }
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+ if (dstStride[p] && !dst[p]) {
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+ goto end;
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+ }
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+ }
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+
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+ // srcFormat -> dstFormat
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+ sws = sws_getContext(w, h, inFormat, w, h,
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+ dstFormat, SWS_BILINEAR, NULL, NULL, NULL);
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+ if (!sws) {
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+ fprintf(stderr, "Failed to get %s -> %s\n", av_get_pix_fmt_name(inFormat), av_get_pix_fmt_name(dstFormat) );
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+ goto end;
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+ }
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+
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+ res = sws_scale(sws, (const uint8_t *const *)rgbIn, rgbStride, 0, h, dst, dstStride);
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+ if (res < 0 || res != h) {
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+ fprintf(stderr, "sws_scale failed\n");
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+ res = -1;
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+ goto end;
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+ }
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+ sws_freeContext(sws);
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+
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+ // dstFormat -> srcFormat
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+ sws = sws_getContext(w, h, dstFormat, w, h,
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+ inFormat, SWS_BILINEAR, NULL, NULL, NULL);
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+ if(!sws) {
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+ fprintf(stderr, "Failed to get %s -> %s\n", av_get_pix_fmt_name(dstFormat), av_get_pix_fmt_name(inFormat) );
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+ goto end;
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+ }
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+
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+ res = sws_scale(sws, (const uint8_t *const *)dst, dstStride, 0, h, rgbOut, rgbStride);
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+ if (res < 0 || res != h) {
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+ fprintf(stderr, "sws_scale failed\n");
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+ res = -1;
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+ goto end;
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+ }
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+ sws_freeContext(sws);
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+ sws = NULL;
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+
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+ minimum = FLT_MAX;
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+ maximum = -FLT_MAX;
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+ count = 0;
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+ sum = 0.0;
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+
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+ for (p = 0; p < 4; p++) {
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+ if (!rgbStride[p])
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+ continue;
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+
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+ for (y = 0; y < h; y++) {
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+ in = (uint32_t*)(rgbIn[p] + y * rgbStride[p]);
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+ out = (uint32_t*)(rgbOut[p] + y * rgbStride[p]);
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+ for (x = 0; x < w; x++) {
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+ if (desc->flags & AV_PIX_FMT_FLAG_BE) {
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+ v0.i = AV_RB32(in);
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+ v1.i = AV_RB32(out);
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+ } else {
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+ v0.i = AV_RL32(in);
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+ v1.i = AV_RL32(out);
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+ }
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+
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+ diff = fabsf(v0.f - v1.f);
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+ sum += diff;
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+ minimum = FFMIN(minimum, diff);
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+ maximum = FFMAX(maximum, diff);
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+
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+ count++;
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+ in++;
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+ out++;
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+ }
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+ }
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+ }
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+
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+ fprintf(stdout, "%s -> %s -> %s\n", av_get_pix_fmt_name(inFormat), av_get_pix_fmt_name(dstFormat), av_get_pix_fmt_name(inFormat) );
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+ fprintf(stdout, "avg diff: %f\nmin diff: %f\nmax diff: %f\n", sum / count, minimum, maximum);
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+ res = 0;
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+ }
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+
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+end:
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+ sws_freeContext(sws);
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+ for (p = 0; p < 4; p++) {
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+ av_freep(&rgbIn[p]);
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+ av_freep(&rgbOut[p]);
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+ av_freep(&dst[p]);
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+ }
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+ if (fp)
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+ fclose(fp);
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+
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+ return res;
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+}
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Mark Reid