[FFmpeg-devel] [PATCH] checkasm: add vp9dsp.itxfm_add tests.
Ronald S. Bultje
rsbultje at gmail.com
Fri Sep 25 18:05:43 CEST 2015
---
tests/checkasm/vp9dsp.c | 275 ++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 275 insertions(+)
diff --git a/tests/checkasm/vp9dsp.c b/tests/checkasm/vp9dsp.c
index eb9228a..b091905 100644
--- a/tests/checkasm/vp9dsp.c
+++ b/tests/checkasm/vp9dsp.c
@@ -18,12 +18,15 @@
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
+#include <math.h>
#include <string.h>
#include "checkasm.h"
+#include "libavcodec/vp9data.h"
#include "libavcodec/vp9dsp.h"
#include "libavutil/common.h"
#include "libavutil/internal.h"
#include "libavutil/intreadwrite.h"
+#include "libavutil/mathematics.h"
static const uint32_t pixel_mask[3] = { 0xffffffff, 0x03ff03ff, 0x0fff0fff };
#define SIZEOF_PIXEL ((bit_depth + 7) / 8)
@@ -94,6 +97,277 @@ static void check_ipred(void)
#undef randomize_buffers
+#define randomize_buffers() \
+ do { \
+ uint32_t mask = pixel_mask[(bit_depth - 8) >> 1]; \
+ for (y = 0; y < sz; y++) { \
+ for (x = 0; x < sz * SIZEOF_PIXEL; x += 4) { \
+ uint32_t r = rnd() & mask; \
+ AV_WN32A(dst + y * sz * SIZEOF_PIXEL + x, r); \
+ AV_WN32A(src + y * sz * SIZEOF_PIXEL + x, rnd() & mask); \
+ } \
+ for (x = 0; x < sz; x++) { \
+ if (bit_depth == 8) { \
+ coef[y * sz + x] = src[y * sz + x] - dst[y * sz + x]; \
+ } else { \
+ ((int32_t *) coef)[y * sz + x] = \
+ ((uint16_t *) src)[y * sz + x] - \
+ ((uint16_t *) dst)[y * sz + x]; \
+ } \
+ } \
+ } \
+ } while(0)
+
+// wht function copied from libvpx
+static void fwht_1d(double *out, const double *in, int sz)
+{
+ double t0 = in[0] + in[1];
+ double t3 = in[3] - in[2];
+ double t4 = trunc((t0 - t3) * 0.5);
+ double t1 = t4 - in[1];
+ double t2 = t4 - in[2];
+
+ out[0] = t0 - t2;
+ out[1] = t2;
+ out[2] = t3 + t1;
+ out[3] = t1;
+}
+
+// standard DCT-II
+static void fdct_1d(double *out, const double *in, int sz)
+{
+ int k, n;
+
+ for (k = 0; k < sz; k++) {
+ out[k] = 0.0;
+ for (n = 0; n < sz; n++)
+ out[k] += in[n] * cos(M_PI * (2 * n + 1) * k / (sz * 2.0));
+ }
+ out[0] *= M_SQRT1_2;
+}
+
+// see "Towards jointly optimal spatial prediction and adaptive transform in
+// video/image coding", by J. Han, A. Saxena, and K. Rose
+// IEEE Proc. ICASSP, pp. 726-729, Mar. 2010.
+static void fadst4_1d(double *out, const double *in, int sz)
+{
+ int k, n;
+
+ for (k = 0; k < sz; k++) {
+ out[k] = 0.0;
+ for (n = 0; n < sz; n++)
+ out[k] += in[n] * sin(M_PI * (n + 1) * (2 * k + 1) / (sz * 2.0 + 1.0));
+ }
+}
+
+// see "A Butterfly Structured Design of The Hybrid Transform Coding Scheme",
+// by Jingning Han, Yaowu Xu, and Debargha Mukherjee
+// http://static.googleusercontent.com/media/research.google.com/en//pubs/archive/41418.pdf
+static void fadst_1d(double *out, const double *in, int sz)
+{
+ int k, n;
+
+ for (k = 0; k < sz; k++) {
+ out[k] = 0.0;
+ for (n = 0; n < sz; n++)
+ out[k] += in[n] * sin(M_PI * (2 * n + 1) * (2 * k + 1) / (sz * 4.0));
+ }
+}
+
+typedef void (*ftx1d_fn)(double *out, const double *in, int sz);
+static void ftx_2d(double *out, const double *in, enum TxfmMode tx,
+ enum TxfmType txtp, int sz)
+{
+ static const double scaling_factors[5][4] = {
+ { 4.0, 16.0 * M_SQRT1_2 / 3.0, 16.0 * M_SQRT1_2 / 3.0, 32.0 / 9.0 },
+ { 2.0, 2.0, 2.0, 2.0 },
+ { 1.0, 1.0, 1.0, 1.0 },
+ { 0.25 },
+ { 4.0 }
+ };
+ static const ftx1d_fn ftx1d_tbl[5][4][2] = {
+ {
+ { fdct_1d, fdct_1d },
+ { fadst4_1d, fdct_1d },
+ { fdct_1d, fadst4_1d },
+ { fadst4_1d, fadst4_1d },
+ }, {
+ { fdct_1d, fdct_1d },
+ { fadst_1d, fdct_1d },
+ { fdct_1d, fadst_1d },
+ { fadst_1d, fadst_1d },
+ }, {
+ { fdct_1d, fdct_1d },
+ { fadst_1d, fdct_1d },
+ { fdct_1d, fadst_1d },
+ { fadst_1d, fadst_1d },
+ }, {
+ { fdct_1d, fdct_1d },
+ }, {
+ { fwht_1d, fwht_1d },
+ },
+ };
+ double temp[1024];
+ double scaling_factor = scaling_factors[tx][txtp];
+ int i, j;
+
+ // cols
+ for (i = 0; i < sz; ++i) {
+ double temp_out[32];
+
+ ftx1d_tbl[tx][txtp][0](temp_out, &in[i * sz], sz);
+ // scale and transpose
+ for (j = 0; j < sz; ++j)
+ temp[j * sz + i] = temp_out[j] * scaling_factor;
+ }
+
+ // rows
+ for (i = 0; i < sz; i++)
+ ftx1d_tbl[tx][txtp][1](&out[i * sz], &temp[i * sz], sz);
+}
+
+static void ftx(int16_t *buf, enum TxfmMode tx,
+ enum TxfmType txtp, int sz, int bit_depth)
+{
+ double ind[1024], outd[1024];
+ int n;
+
+ emms_c();
+ for (n = 0; n < sz * sz; n++) {
+ if (bit_depth == 8)
+ ind[n] = buf[n];
+ else
+ ind[n] = ((int32_t *) buf)[n];
+ }
+ ftx_2d(outd, ind, tx, txtp, sz);
+ for (n = 0; n < sz * sz; n++) {
+ if (bit_depth == 8)
+ buf[n] = lrint(outd[n]);
+ else
+ ((int32_t *) buf)[n] = lrint(outd[n]);
+ }
+}
+
+static int copy_subcoefs(int16_t *out, const int16_t *in, enum TxfmMode tx,
+ enum TxfmType txtp, int sz, int sub, int bit_depth)
+{
+ // copy the topleft coefficients such that the return value (being the
+ // coefficient scantable index for the eob token) guarantees that only
+ // the topleft $sub out of $sz (where $sz >= $sub) coefficients in both
+ // dimensions are non-zero. This leads to braching to specific optimized
+ // simd versions (e.g. dc-only) so that we get full asm coverage in this
+ // test
+
+ int n;
+ const int16_t *scan = vp9_scans[tx][txtp];
+ int eob;
+
+ for (n = 0; n < sz * sz; n++) {
+ int rc = scan[n], rcx = rc % sz, rcy = rc / sz;
+
+ // find eob for this sub-idct
+ if (rcx >= sub || rcy >= sub)
+ break;
+
+ // copy coef
+ if (bit_depth == 8) {
+ out[rc] = in[rc];
+ } else {
+ AV_COPY32(&out[rc * 2], &in[rc * 2]);
+ }
+ }
+
+ eob = n;
+
+ for (; n < sz * sz; n++) {
+ int rc = scan[n];
+
+ // zero
+ if (bit_depth == 8) {
+ out[rc] = 0;
+ } else {
+ AV_ZERO32(&out[rc * 2]);
+ }
+ }
+
+ return eob;
+}
+
+static int iszero(const int16_t *c, int sz)
+{
+ int n;
+
+ for (n = 0; n < sz; n += 4)
+ if (AV_RN32A(&c[n]))
+ return 0;
+
+ return 1;
+}
+
+#define SIZEOF_COEF (2 * ((bit_depth + 7) / 8))
+
+static void check_itxfm(void)
+{
+ LOCAL_ALIGNED_32(uint8_t, src, [32 * 32 * 2]);
+ LOCAL_ALIGNED_32(uint8_t, dst, [32 * 32 * 2]);
+ LOCAL_ALIGNED_32(uint8_t, dst0, [32 * 32 * 2]);
+ LOCAL_ALIGNED_32(uint8_t, dst1, [32 * 32 * 2]);
+ LOCAL_ALIGNED_32(int16_t, coef, [32 * 32 * 2]);
+ LOCAL_ALIGNED_32(int16_t, subcoef0, [32 * 32 * 2]);
+ LOCAL_ALIGNED_32(int16_t, subcoef1, [32 * 32 * 2]);
+ declare_func(void, uint8_t *dst, ptrdiff_t stride, int16_t *block, int eob);
+ VP9DSPContext dsp;
+ int y, x, tx, txtp, bit_depth, sub;
+ static const char *const txtp_types[N_TXFM_TYPES] = {
+ [DCT_DCT] = "dct_dct", [DCT_ADST] = "adst_dct",
+ [ADST_DCT] = "dct_adst", [ADST_ADST] = "adst_adst"
+ };
+
+ for (bit_depth = 8; bit_depth <= 12; bit_depth += 2) {
+ ff_vp9dsp_init(&dsp, bit_depth, 0);
+
+ for (tx = TX_4X4; tx <= N_TXFM_SIZES /* 4 = lossless */; tx++) {
+ int sz = 4 << (tx & 3);
+ int n_txtps = tx < TX_32X32 ? N_TXFM_TYPES : 1;
+
+ for (txtp = 0; txtp < n_txtps; txtp++) {
+ if (check_func(dsp.itxfm_add[tx][txtp], "vp9_inv_%s_%dx%d_add_%d",
+ tx == 4 ? "wht_wht" : txtp_types[txtp], sz, sz,
+ bit_depth)) {
+ randomize_buffers();
+ ftx(coef, tx, txtp, sz, bit_depth);
+
+ for (sub = (txtp == 0) ? 1 : sz; sub <= sz; sub <<= 1) {
+ int eob;
+
+ if (sub < sz) {
+ eob = copy_subcoefs(subcoef0, coef, tx, txtp,
+ sz, sub, bit_depth);
+ } else {
+ eob = sz * sz;
+ memcpy(subcoef0, coef, sz * sz * SIZEOF_COEF);
+ }
+
+ memcpy(dst0, dst, sz * sz * SIZEOF_PIXEL);
+ memcpy(dst1, dst, sz * sz * SIZEOF_PIXEL);
+ memcpy(subcoef1, subcoef0, sz * sz * SIZEOF_COEF);
+ call_ref(dst0, sz * SIZEOF_PIXEL, subcoef0, eob);
+ call_new(dst1, sz * SIZEOF_PIXEL, subcoef1, eob);
+ if (memcmp(dst0, dst1, sz * sz * SIZEOF_PIXEL) ||
+ !iszero(subcoef0, sz * sz * SIZEOF_COEF) ||
+ !iszero(subcoef1, sz * sz * SIZEOF_COEF))
+ fail();
+ }
+ bench_new(dst, sz * SIZEOF_PIXEL, coef, sz * sz);
+ }
+ }
+ }
+ }
+ report("itxfm");
+}
+
+#undef randomize_buffers
+
#define setpx(a,b,c) \
do { \
if (SIZEOF_PIXEL == 1) { \
@@ -337,6 +611,7 @@ static void check_mc(void)
void checkasm_check_vp9dsp(void)
{
check_ipred();
+ check_itxfm();
check_loopfilter();
check_mc();
}
--
2.1.2
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