diff options
Diffstat (limited to 'libavcodec/dct-test.c')
| -rw-r--r-- | libavcodec/dct-test.c | 127 |
1 files changed, 54 insertions, 73 deletions
diff --git a/libavcodec/dct-test.c b/libavcodec/dct-test.c index 9e1e996..2222cd5 100644 --- a/libavcodec/dct-test.c +++ b/libavcodec/dct-test.c @@ -199,6 +199,55 @@ static inline void mmx_emms(void) #endif } +static void init_block(DCTELEM block[64], int test, int is_idct, AVLFG *prng, int vals) +{ + 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) % (2*vals)) -vals; + 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) % (2*vals) -vals; + break; + case 2: + block[ 0] = av_lfg_get(prng) % (16*vals) - (8*vals); + 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, const int bits) { @@ -221,46 +270,8 @@ static int dct_error(const struct algo *dct, int test, int is_idct, int speed, c 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) % (2*vals)) -vals; - 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) % (2*vals) -vals; - } - break; - case 2: - block1[0] = av_lfg_get(&prng) % (16*vals) - (8*vals); - 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, vals); + permute(block, block1, dct->format); dct->func(block); mmx_emms(); @@ -317,45 +328,15 @@ static int dct_error(const struct algo *dct, int test, int is_idct, int speed, c 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) % (2*vals) -vals; - 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) % (2*vals) -vals; - block1[1] = av_lfg_get(&prng) % (2*vals) -vals; - block1[2] = av_lfg_get(&prng) % (2*vals) -vals; - block1[3] = av_lfg_get(&prng) % (2*vals) -vals; - 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, vals); + 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; |
