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/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with FFmpeg; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <string.h>
#include "checkasm.h"
#include "libavfilter/vf_colordetect.h"
#include "libavutil/mem_internal.h"
#define WIDTH 256
#define HEIGHT 16
#define STRIDE (WIDTH + 32)
static void check_range_detect(int depth)
{
const int mpeg_min = 16 << (depth - 8);
const int mpeg_max = 235 << (depth - 8);
FFColorDetectDSPContext dsp = {0};
ff_color_detect_dsp_init(&dsp, depth, AVCOL_RANGE_UNSPECIFIED);
declare_func(int, const uint8_t *, ptrdiff_t, ptrdiff_t, ptrdiff_t, int, int);
/* Initialize to 128, which should always return 0 */
LOCAL_ALIGNED_32(uint8_t, in, [HEIGHT * STRIDE]);
memset(in, 0x80, HEIGHT * STRIDE);
/* Place an out-of-range value in a random position near the center */
const int h2 = HEIGHT >> 1;
int idx0 = ((rnd() % h2) + h2) * STRIDE + (rnd() % WIDTH);
if (depth > 8) {
idx0 &= ~1;
in[idx0] = in[idx0 + 1] = 0;
} else {
in[idx0] = 0;
}
int w = WIDTH;
if (depth > 8)
w /= 2;
if (check_func(dsp.detect_range, "detect_range_%d", depth)) {
/* Test increasing height, to ensure we hit the placed 0 eventually */
for (int h = 1; h <= HEIGHT; h++) {
int res_ref = call_ref(in, STRIDE, w, h, mpeg_min, mpeg_max);
int res_new = call_new(in, STRIDE, w, h, mpeg_min, mpeg_max);
if (res_ref != res_new)
fail();
}
/* Test performance of base case without any out-of-range values */
memset(in, 0x80, HEIGHT * STRIDE);
bench_new(in, STRIDE, w, HEIGHT, mpeg_min, mpeg_max);
}
}
static void check_alpha_detect(int depth, enum AVColorRange range)
{
const int mpeg_min = 16 << (depth - 8);
const int mpeg_max = 235 << (depth - 8);
const int p = (1 << depth) - 1;
const int q = mpeg_max - mpeg_min;
const int k = p * mpeg_min + q + (1 << (depth - 1));
FFColorDetectDSPContext dsp = {0};
ff_color_detect_dsp_init(&dsp, depth, range);
declare_func(int, const uint8_t *, ptrdiff_t, const uint8_t *, ptrdiff_t,
ptrdiff_t, ptrdiff_t, int p, int q, int k);
LOCAL_ALIGNED_32(uint8_t, luma, [HEIGHT * STRIDE]);
LOCAL_ALIGNED_32(uint8_t, alpha, [HEIGHT * STRIDE]);
memset(luma, 0x80, HEIGHT * STRIDE);
memset(alpha, 0xFF, HEIGHT * STRIDE);
/* Try and force overflow */
if (depth > 8 && range == AVCOL_RANGE_MPEG) {
((uint16_t *) luma)[0] = 235 << (depth - 8);
((uint16_t *) luma)[1] = 16 << (depth - 8);
} else {
luma[0] = 235;
luma[1] = 16;
}
/* Place an out-of-range value in a random position near the center */
const int h2 = HEIGHT >> 1;
int idx0 = ((rnd() % h2) + h2) * STRIDE + (rnd() % WIDTH);
if (depth > 8) {
idx0 &= ~1;
alpha[idx0] = alpha[idx0 + 1] = 0;
} else {
alpha[idx0] = 0;
}
int w = WIDTH;
if (depth > 8)
w /= 2;
if (check_func(dsp.detect_alpha, "detect_alpha_%d_%s", depth, range == AVCOL_RANGE_JPEG ? "full" : "limited")) {
/* Test increasing height, to ensure we hit the placed 0 eventually */
for (int h = 1; h <= HEIGHT; h++) {
int res_ref = call_ref(luma, STRIDE, alpha, STRIDE, w, h, p, q, k);
int res_new = call_new(luma, STRIDE, alpha, STRIDE, w, h, p, q, k);
if (res_ref != res_new)
fail();
}
/* Test performance of base case without any out-of-range values */
memset(alpha, 0xFF, HEIGHT * STRIDE);
bench_new(luma, STRIDE, alpha, STRIDE, w, HEIGHT, p, q, k);
}
}
void checkasm_check_colordetect(void)
{
for (int depth = 8; depth <= 16; depth += 8) {
check_range_detect(depth);
report("detect_range_%d", depth);
check_alpha_detect(depth, AVCOL_RANGE_JPEG);
check_alpha_detect(depth, AVCOL_RANGE_MPEG);
report("detect_alpha_%d", depth);
}
}
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