#include <stdlib.h>
#include <string.h>
#include <inttypes.h>
-#include <assert.h>
+#include <math.h>
+#include <float.h>
+
+#include "libavutil/intfloat.h"
+#include "libavutil/intreadwrite.h"
#define FFMIN(a, b) ((a) > (b) ? (b) : (a))
#define F 100
return ret;
}
+static int16_t get_s16l(uint8_t *p)
+{
+ union {
+ uint16_t u;
+ int16_t s;
+ } v;
+ v.u = p[0] | p[1] << 8;
+ return v.s;
+}
+
+static float get_f32l(uint8_t *p)
+{
+ union av_intfloat32 v;
+ v.i = p[0] | p[1] << 8 | p[2] << 16 | p[3] << 24;
+ return v.f;
+}
+
+static double get_f64l(uint8_t *p)
+{
+ return av_int2double(AV_RL64(p));
+}
+
int main(int argc, char *argv[])
{
- int i, j;
+ uint64_t i, j;
uint64_t sse = 0;
- uint64_t dev;
+ double sse_d = 0.0;
FILE *f[2];
uint8_t buf[2][SIZE];
- uint64_t psnr;
- int len = argc < 4 ? 1 : atoi(argv[3]);
- int64_t max = (1 << (8 * len)) - 1;
+ int len = 1;
+ int64_t max;
int shift = argc < 5 ? 0 : atoi(argv[4]);
int skip_bytes = argc < 6 ? 0 : atoi(argv[5]);
- int size0 = 0;
- int size1 = 0;
- int maxdist = 0;
+ uint64_t size0 = 0;
+ uint64_t size1 = 0;
+ uint64_t maxdist = 0;
+ double maxdist_d = 0.0;
if (argc < 3) {
printf("tiny_psnr <file1> <file2> [<elem size> [<shift> [<skip bytes>]]]\n");
return 1;
}
+ if (argc > 3) {
+ if (!strcmp(argv[3], "u8")) {
+ len = 1;
+ } else if (!strcmp(argv[3], "s16")) {
+ len = 2;
+ } else if (!strcmp(argv[3], "f32")) {
+ len = 4;
+ } else if (!strcmp(argv[3], "f64")) {
+ len = 8;
+ } else {
+ char *end;
+ len = strtol(argv[3], &end, 0);
+ if (*end || len < 1 || len > 2) {
+ fprintf(stderr, "Unsupported sample format: %s\n", argv[3]);
+ return 1;
+ }
+ }
+ }
+
+ max = (1LL << (8 * len)) - 1;
+
f[0] = fopen(argv[1], "rb");
f[1] = fopen(argv[2], "rb");
if (!f[0] || !f[1]) {
int s0 = fread(buf[0], 1, SIZE, f[0]);
int s1 = fread(buf[1], 1, SIZE, f[1]);
- for (j = 0; j < FFMIN(s0, s1); j++) {
- int64_t a = buf[0][j];
- int64_t b = buf[1][j];
- int dist;
- if (len == 2) {
- a = (int16_t)(a | (buf[0][++j] << 8));
- b = (int16_t)(b | (buf[1][ j] << 8));
+ for (j = 0; j < FFMIN(s0, s1); j += len) {
+ switch (len) {
+ case 1:
+ case 2: {
+ int64_t a = buf[0][j];
+ int64_t b = buf[1][j];
+ int dist;
+ if (len == 2) {
+ a = get_s16l(buf[0] + j);
+ b = get_s16l(buf[1] + j);
+ } else {
+ a = buf[0][j];
+ b = buf[1][j];
+ }
+ sse += (a - b) * (a - b);
+ dist = llabs(a - b);
+ if (dist > maxdist)
+ maxdist = dist;
+ break;
+ }
+ case 4:
+ case 8: {
+ double dist, a, b;
+ if (len == 8) {
+ a = get_f64l(buf[0] + j);
+ b = get_f64l(buf[1] + j);
+ } else {
+ a = get_f32l(buf[0] + j);
+ b = get_f32l(buf[1] + j);
+ }
+ dist = fabs(a - b);
+ sse_d += (a - b) * (a - b);
+ if (dist > maxdist_d)
+ maxdist_d = dist;
+ break;
+ }
}
- sse += (a - b) * (a - b);
- dist = abs(a - b);
- if (dist > maxdist)
- maxdist = dist;
}
size0 += s0;
size1 += s1;
i = FFMIN(size0, size1) / len;
if (!i)
i = 1;
- dev = int_sqrt(((sse / i) * F * F) + (((sse % i) * F * F) + i / 2) / i);
- if (sse)
- psnr = ((2 * log16(max << 16) + log16(i) - log16(sse)) *
- 284619LL * F + (1LL << 31)) / (1LL << 32);
- else
- psnr = 1000 * F - 1; // floating point free infinity :)
-
- printf("stddev:%5d.%02d PSNR:%3d.%02d MAXDIFF:%5d bytes:%9d/%9d\n",
- (int)(dev / F), (int)(dev % F),
- (int)(psnr / F), (int)(psnr % F),
- maxdist, size0, size1);
+ switch (len) {
+ case 1:
+ case 2: {
+ uint64_t psnr;
+ uint64_t dev = int_sqrt(((sse / i) * F * F) + (((sse % i) * F * F) + i / 2) / i);
+ if (sse)
+ psnr = ((2 * log16(max << 16) + log16(i) - log16(sse)) *
+ 284619LL * F + (1LL << 31)) / (1LL << 32);
+ else
+ psnr = 1000 * F - 1; // floating point free infinity :)
+
+ printf("stddev:%5d.%02d PSNR:%3d.%02d MAXDIFF:%5"PRIu64" bytes:%9"PRIu64"/%9"PRIu64"\n",
+ (int)(dev / F), (int)(dev % F),
+ (int)(psnr / F), (int)(psnr % F),
+ maxdist, size0, size1);
+ break;
+ }
+ case 4:
+ case 8: {
+ char psnr_str[64];
+ double dev = sqrt(sse_d / i);
+ uint64_t scale = (len == 4) ? (1ULL << 24) : (1ULL << 32);
+
+ if (sse_d) {
+ double psnr = 2 * log(DBL_MAX) - log(i / sse_d);
+ snprintf(psnr_str, sizeof(psnr_str), "%5.02f", psnr);
+ } else
+ snprintf(psnr_str, sizeof(psnr_str), "inf");
+
+ maxdist = maxdist_d * scale;
+
+ printf("stddev:%10.2f PSNR:%s MAXDIFF:%10"PRIu64" bytes:%9"PRIu64"/%9"PRIu64"\n",
+ dev * scale, psnr_str, maxdist, size0, size1);
+ break;
+ }
+ }
return 0;
}
projects / ffmpeg / blobdiff