#define AANSCALE_BITS 12
-uint8_t cropTbl[256 + 2 * MAX_NEG_CROP];
-
static int64_t gettime(void)
{
struct timeval tv;
#endif
}
+static void init_block(DCTELEM block[64], int test, int is_idct, AVLFG *prng)
+{
+ int i, j;
+
+ memset(block, 0, 64 * sizeof(*block));
+
+ switch (test) {
+ case 0:
+ for (i = 0; i < 64; i++)
+ block[i] = (av_lfg_get(prng) % 512) - 256;
+ if (is_idct) {
+ ff_ref_fdct(block);
+ for (i = 0; i < 64; i++)
+ block[i] >>= 3;
+ }
+ break;
+ case 1:
+ j = av_lfg_get(prng) % 10 + 1;
+ for (i = 0; i < j; i++)
+ block[av_lfg_get(prng) % 64] = av_lfg_get(prng) % 512 - 256;
+ break;
+ case 2:
+ block[ 0] = av_lfg_get(prng) % 4096 - 2048;
+ block[63] = (block[0] & 1) ^ 1;
+ break;
+ }
+}
+
+static void permute(DCTELEM dst[64], const DCTELEM src[64], int perm)
+{
+ int i;
+
+ if (perm == MMX_PERM) {
+ for (i = 0; i < 64; i++)
+ dst[idct_mmx_perm[i]] = src[i];
+ } else if (perm == MMX_SIMPLE_PERM) {
+ for (i = 0; i < 64; i++)
+ dst[idct_simple_mmx_perm[i]] = src[i];
+ } else if (perm == SSE2_PERM) {
+ for (i = 0; i < 64; i++)
+ dst[(i & 0x38) | idct_sse2_row_perm[i & 7]] = src[i];
+ } else if (perm == PARTTRANS_PERM) {
+ for (i = 0; i < 64; i++)
+ dst[(i & 0x24) | ((i & 3) << 3) | ((i >> 3) & 3)] = src[i];
+ } else {
+ for (i = 0; i < 64; i++)
+ dst[i] = src[i];
+ }
+}
+
static int dct_error(const struct algo *dct, int test, int is_idct, int speed)
{
void (*ref)(DCTELEM *block) = is_idct ? ff_ref_idct : ff_ref_fdct;
for (i = 0; i < 64; i++)
sysErr[i] = 0;
for (it = 0; it < NB_ITS; it++) {
- for (i = 0; i < 64; i++)
- block1[i] = 0;
- switch (test) {
- case 0:
- for (i = 0; i < 64; i++)
- block1[i] = (av_lfg_get(&prng) % 512) - 256;
- if (is_idct) {
- ff_ref_fdct(block1);
- for (i = 0; i < 64; i++)
- block1[i] >>= 3;
- }
- break;
- case 1: {
- int num = av_lfg_get(&prng) % 10 + 1;
- for (i = 0; i < num; i++)
- block1[av_lfg_get(&prng) % 64] =
- av_lfg_get(&prng) % 512 - 256;
- }
- break;
- case 2:
- block1[0] = av_lfg_get(&prng) % 4096 - 2048;
- block1[63] = (block1[0] & 1) ^ 1;
- break;
- }
-
- if (dct->format == MMX_PERM) {
- for (i = 0; i < 64; i++)
- block[idct_mmx_perm[i]] = block1[i];
- } else if (dct->format == MMX_SIMPLE_PERM) {
- for (i = 0; i < 64; i++)
- block[idct_simple_mmx_perm[i]] = block1[i];
- } else if (dct->format == SSE2_PERM) {
- for (i = 0; i < 64; i++)
- block[(i & 0x38) | idct_sse2_row_perm[i & 7]] = block1[i];
- } else if (dct->format == PARTTRANS_PERM) {
- for (i = 0; i < 64; i++)
- block[(i & 0x24) | ((i & 3) << 3) | ((i >> 3) & 3)] = block1[i];
- } else {
- for (i = 0; i < 64; i++)
- block[i] = block1[i];
- }
+ init_block(block1, test, is_idct, &prng);
+ permute(block, block1, dct->format);
dct->func(block);
mmx_emms();
return 0;
/* speed test */
- for (i = 0; i < 64; i++)
- block1[i] = 0;
-
- switch (test) {
- case 0:
- for (i = 0; i < 64; i++)
- block1[i] = av_lfg_get(&prng) % 512 - 256;
- if (is_idct) {
- ff_ref_fdct(block1);
- for (i = 0; i < 64; i++)
- block1[i] >>= 3;
- }
- break;
- case 1:
- case 2:
- block1[0] = av_lfg_get(&prng) % 512 - 256;
- block1[1] = av_lfg_get(&prng) % 512 - 256;
- block1[2] = av_lfg_get(&prng) % 512 - 256;
- block1[3] = av_lfg_get(&prng) % 512 - 256;
- break;
- }
-
- if (dct->format == MMX_PERM) {
- for (i = 0; i < 64; i++)
- block[idct_mmx_perm[i]] = block1[i];
- } else if (dct->format == MMX_SIMPLE_PERM) {
- for (i = 0; i < 64; i++)
- block[idct_simple_mmx_perm[i]] = block1[i];
- } else {
- for (i = 0; i < 64; i++)
- block[i] = block1[i];
- }
+ init_block(block, test, is_idct, &prng);
+ permute(block1, block, dct->format);
ti = gettime();
it1 = 0;
do {
for (it = 0; it < NB_ITS_SPEED; it++) {
- for (i = 0; i < 64; i++)
- block[i] = block1[i];
+ memcpy(block, block1, sizeof(block));
dct->func(block);
}
it1 += NB_ITS_SPEED;
ff_ref_dct_init();
idct_mmx_init();
- for (i = 0; i < 256; i++)
- cropTbl[i + MAX_NEG_CROP] = i;
- for (i = 0; i < MAX_NEG_CROP; i++) {
- cropTbl[i] = 0;
- cropTbl[i + MAX_NEG_CROP + 256] = 255;
- }
-
for (;;) {
c = getopt(argc, argv, "ih4t");
if (c == -1)
if (optind < argc)
test = atoi(argv[optind]);
- printf("ffmpeg DCT/IDCT test\n");
+ printf("Libav DCT/IDCT test\n");
if (test_248_dct) {
idct248_error("SIMPLE-C", ff_simple_idct248_put, speed);