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libbpg-0.9.6
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168
x265/source/test/testharness.h
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168
x265/source/test/testharness.h
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/*****************************************************************************
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* Copyright (C) 2013 x265 project
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*
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* Authors: Steve Borho <steve@borho.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
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*
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* This program is also available under a commercial proprietary license.
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* For more information, contact us at license @ x265.com.
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*****************************************************************************/
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#ifndef _TESTHARNESS_H_
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#define _TESTHARNESS_H_ 1
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#include "common.h"
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#include "primitives.h"
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#if _MSC_VER
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#pragma warning(disable: 4324) // structure was padded due to __declspec(align())
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#endif
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#define PIXEL_MAX ((1 << X265_DEPTH) - 1)
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#define PIXEL_MIN 0
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#define SHORT_MAX 32767
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#define SHORT_MIN -32767
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#define UNSIGNED_SHORT_MAX 65535
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using namespace X265_NS;
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extern const char* lumaPartStr[NUM_PU_SIZES];
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extern const char* const* chromaPartStr[X265_CSP_COUNT];
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class TestHarness
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{
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public:
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TestHarness() {}
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virtual ~TestHarness() {}
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virtual bool testCorrectness(const EncoderPrimitives& ref, const EncoderPrimitives& opt) = 0;
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virtual void measureSpeed(const EncoderPrimitives& ref, const EncoderPrimitives& opt) = 0;
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virtual const char *getName() const = 0;
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protected:
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/* Temporary variables for stack checks */
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int m_ok;
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uint64_t m_rand;
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};
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#ifdef _MSC_VER
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#include <intrin.h>
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#elif HAVE_RDTSC
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#include <intrin.h>
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#elif defined(__GNUC__)
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/* fallback for older GCC/MinGW */
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static inline uint32_t __rdtsc(void)
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{
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uint32_t a = 0;
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asm volatile("rdtsc" : "=a" (a) ::"edx");
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return a;
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}
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#endif // ifdef _MSC_VER
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#define BENCH_RUNS 1000
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// Adapted from checkasm.c, runs each optimized primitive four times, measures rdtsc
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// and discards invalid times. Repeats 1000 times to get a good average. Then measures
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// the C reference with fewer runs and reports X factor and average cycles.
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#define REPORT_SPEEDUP(RUNOPT, RUNREF, ...) \
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{ \
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uint32_t cycles = 0; int runs = 0; \
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RUNOPT(__VA_ARGS__); \
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for (int ti = 0; ti < BENCH_RUNS; ti++) { \
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uint32_t t0 = (uint32_t)__rdtsc(); \
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RUNOPT(__VA_ARGS__); \
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RUNOPT(__VA_ARGS__); \
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RUNOPT(__VA_ARGS__); \
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RUNOPT(__VA_ARGS__); \
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uint32_t t1 = (uint32_t)__rdtsc() - t0; \
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if (t1 * runs <= cycles * 4 && ti > 0) { cycles += t1; runs++; } \
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} \
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uint32_t refcycles = 0; int refruns = 0; \
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RUNREF(__VA_ARGS__); \
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for (int ti = 0; ti < BENCH_RUNS / 4; ti++) { \
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uint32_t t0 = (uint32_t)__rdtsc(); \
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RUNREF(__VA_ARGS__); \
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RUNREF(__VA_ARGS__); \
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RUNREF(__VA_ARGS__); \
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RUNREF(__VA_ARGS__); \
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uint32_t t1 = (uint32_t)__rdtsc() - t0; \
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if (t1 * refruns <= refcycles * 4 && ti > 0) { refcycles += t1; refruns++; } \
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} \
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x265_emms(); \
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float optperf = (10.0f * cycles / runs) / 4; \
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float refperf = (10.0f * refcycles / refruns) / 4; \
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printf("\t%3.2fx ", refperf / optperf); \
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printf("\t %-8.2lf \t %-8.2lf\n", optperf, refperf); \
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}
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extern "C" {
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#if X265_ARCH_X86
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int PFX(stack_pagealign)(int (*func)(), int align);
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/* detect when callee-saved regs aren't saved
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* needs an explicit asm check because it only sometimes crashes in normal use. */
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intptr_t PFX(checkasm_call)(intptr_t (*func)(), int *ok, ...);
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float PFX(checkasm_call_float)(float (*func)(), int *ok, ...);
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#else
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#define PFX(stack_pagealign)(func, align) func()
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#endif
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#if X86_64
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/* Evil hack: detect incorrect assumptions that 32-bit ints are zero-extended to 64-bit.
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* This is done by clobbering the stack with junk around the stack pointer and calling the
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* assembly function through x265_checkasm_call with added dummy arguments which forces all
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* real arguments to be passed on the stack and not in registers. For 32-bit argument the
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* upper half of the 64-bit register location on the stack will now contain junk. Note that
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* this is dependent on compiler behavior and that interrupts etc. at the wrong time may
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* overwrite the junk written to the stack so there's no guarantee that it will always
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* detect all functions that assumes zero-extension.
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*/
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void PFX(checkasm_stack_clobber)(uint64_t clobber, ...);
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#define checked(func, ...) ( \
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m_ok = 1, m_rand = (rand() & 0xffff) * 0x0001000100010001ULL, \
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PFX(checkasm_stack_clobber)(m_rand, m_rand, m_rand, m_rand, m_rand, m_rand, m_rand, m_rand, \
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m_rand, m_rand, m_rand, m_rand, m_rand, m_rand, m_rand, m_rand, \
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m_rand, m_rand, m_rand, m_rand, m_rand), /* max_args+6 */ \
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PFX(checkasm_call)((intptr_t(*)())func, &m_ok, 0, 0, 0, 0, __VA_ARGS__))
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#define checked_float(func, ...) ( \
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m_ok = 1, m_rand = (rand() & 0xffff) * 0x0001000100010001ULL, \
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PFX(checkasm_stack_clobber)(m_rand, m_rand, m_rand, m_rand, m_rand, m_rand, m_rand, m_rand, \
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m_rand, m_rand, m_rand, m_rand, m_rand, m_rand, m_rand, m_rand, \
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m_rand, m_rand, m_rand, m_rand, m_rand), /* max_args+6 */ \
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PFX(checkasm_call_float)((float(*)())func, &m_ok, 0, 0, 0, 0, __VA_ARGS__))
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#define reportfail() if (!m_ok) { fflush(stdout); fprintf(stderr, "stack clobber check failed at %s:%d", __FILE__, __LINE__); abort(); }
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#elif ARCH_X86
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#define checked(func, ...) PFX(checkasm_call)((intptr_t(*)())func, &m_ok, __VA_ARGS__);
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#define checked_float(func, ...) PFX(checkasm_call_float)((float(*)())func, &m_ok, __VA_ARGS__);
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#else // if X86_64
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#define checked(func, ...) func(__VA_ARGS__)
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#define checked_float(func, ...) func(__VA_ARGS__)
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#define reportfail()
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#endif // if X86_64
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}
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#endif // ifndef _TESTHARNESS_H_
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