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/*
* Copyright (c) 2015 Henrik Gramner
*
* 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 "libavcodec/avcodec.h"
#include "libavcodec/h264pred.h"
#include "libavutil/common.h"
#include "libavutil/intreadwrite.h"
static const int codec_ids[4] = { AV_CODEC_ID_H264, AV_CODEC_ID_VP8, AV_CODEC_ID_RV40, AV_CODEC_ID_SVQ3 };
static const char * const pred4x4_modes[4][15] = {
{ /* H264 */
[VERT_PRED ] = "vertical",
[HOR_PRED ] = "horizontal",
[DC_PRED ] = "dc",
[DIAG_DOWN_LEFT_PRED ] = "down_left",
[DIAG_DOWN_RIGHT_PRED] = "down_right",
[VERT_RIGHT_PRED ] = "vertical_right",
[HOR_DOWN_PRED ] = "horizontal_right",
[VERT_LEFT_PRED ] = "vertical_left",
[HOR_UP_PRED ] = "horizontal_up",
[LEFT_DC_PRED ] = "left_dc",
[TOP_DC_PRED ] = "top_dc",
[DC_128_PRED ] = "dc_128",
},
{ /* VP8 */
[VERT_PRED ] = "vertical_vp8",
[HOR_PRED ] = "horizontal_vp8",
[VERT_LEFT_PRED] = "vertical_left_vp8",
[TM_VP8_PRED ] = "tm_vp8",
[DC_127_PRED ] = "dc_127_vp8",
[DC_129_PRED ] = "dc_129_vp8",
},
{ /* RV40 */
[DIAG_DOWN_LEFT_PRED ] = "down_left_rv40",
[VERT_LEFT_PRED ] = "vertical_left_rv40",
[HOR_UP_PRED ] = "horizontal_up_rv40",
[DIAG_DOWN_LEFT_PRED_RV40_NODOWN] = "down_left_nodown_rv40",
[HOR_UP_PRED_RV40_NODOWN ] = "horizontal_up_nodown_rv40",
[VERT_LEFT_PRED_RV40_NODOWN ] = "vertical_left_nodown_rv40",
},
{ /* SVQ3 */
[DIAG_DOWN_LEFT_PRED] = "down_left_svq3",
},
};
static const char * const pred8x8_modes[4][11] = {
{ /* H264 */
[DC_PRED8x8 ] = "dc",
[HOR_PRED8x8 ] = "horizontal",
[VERT_PRED8x8 ] = "vertical",
[PLANE_PRED8x8 ] = "plane",
[LEFT_DC_PRED8x8 ] = "left_dc",
[TOP_DC_PRED8x8 ] = "top_dc",
[DC_128_PRED8x8 ] = "dc_128",
[ALZHEIMER_DC_L0T_PRED8x8] = "mad_cow_dc_l0t",
[ALZHEIMER_DC_0LT_PRED8x8] = "mad_cow_dc_0lt",
[ALZHEIMER_DC_L00_PRED8x8] = "mad_cow_dc_l00",
[ALZHEIMER_DC_0L0_PRED8x8] = "mad_cow_dc_0l0",
},
{ /* VP8 */
[PLANE_PRED8x8 ] = "tm_vp8",
[DC_127_PRED8x8] = "dc_127_vp8",
[DC_129_PRED8x8] = "dc_129_vp8",
},
{ /* RV40 */
[DC_PRED8x8 ] = "dc_rv40",
[LEFT_DC_PRED8x8] = "left_dc_rv40",
[TOP_DC_PRED8x8 ] = "top_dc_rv40",
},
{ /* SVQ3 */
},
};
static const char * const pred16x16_modes[4][9] = {
{ /* H264 */
[DC_PRED8x8 ] = "dc",
[HOR_PRED8x8 ] = "horizontal",
[VERT_PRED8x8 ] = "vertical",
[PLANE_PRED8x8 ] = "plane",
[LEFT_DC_PRED8x8] = "left_dc",
[TOP_DC_PRED8x8 ] = "top_dc",
[DC_128_PRED8x8 ] = "dc_128",
},
{ /* VP8 */
[PLANE_PRED8x8 ] = "tm_vp8",
[DC_127_PRED8x8] = "dc_127_vp8",
[DC_129_PRED8x8] = "dc_129_vp8",
},
{ /* RV40 */
[PLANE_PRED8x8] = "plane_rv40",
},
{ /* SVQ3 */
[PLANE_PRED8x8] = "plane_svq3",
},
};
static const uint32_t pixel_mask[3] = { 0xffffffff, 0x01ff01ff, 0x03ff03ff };
#define SIZEOF_PIXEL ((bit_depth + 7) / 8)
#define BUF_SIZE (3 * 16 * 17)
#define check_pred_func(func, name, mode_name) \
(mode_name && ((codec_ids[codec] == AV_CODEC_ID_H264) ? \
check_func(func, "pred%s_%s_%d", name, mode_name, bit_depth) : \
check_func(func, "pred%s_%s", name, mode_name)))
#define randomize_buffers() \
do { \
uint32_t mask = pixel_mask[bit_depth - 8]; \
int i; \
for (i = 0; i < BUF_SIZE; i += 4) { \
uint32_t r = rnd() & mask; \
AV_WN32A(buf0 + i, r); \
AV_WN32A(buf1 + i, r); \
} \
} while (0)
#define src0 (buf0 + 4 * 16) /* Offset to allow room for top and left */
#define src1 (buf1 + 4 * 16)
static void check_pred4x4(H264PredContext *h, uint8_t *buf0, uint8_t *buf1,
int codec, int chroma_format, int bit_depth)
{
if (chroma_format == 1) {
uint8_t *topright = buf0 + 2*16;
int pred_mode;
for (pred_mode = 0; pred_mode < 15; pred_mode++) {
if (check_pred_func(h->pred4x4[pred_mode], "4x4", pred4x4_modes[codec][pred_mode])) {
randomize_buffers();
call_ref(src0, topright, (ptrdiff_t)12*SIZEOF_PIXEL);
call_new(src1, topright, (ptrdiff_t)12*SIZEOF_PIXEL);
if (memcmp(buf0, buf1, BUF_SIZE))
fail();
bench_new(src1, topright, (ptrdiff_t)12*SIZEOF_PIXEL);
}
}
}
}
static void check_pred8x8(H264PredContext *h, uint8_t *buf0, uint8_t *buf1,
int codec, int chroma_format, int bit_depth)
{
int pred_mode;
for (pred_mode = 0; pred_mode < 11; pred_mode++) {
if (check_pred_func(h->pred8x8[pred_mode], (chroma_format == 2) ? "8x16" : "8x8",
pred8x8_modes[codec][pred_mode])) {
randomize_buffers();
call_ref(src0, (ptrdiff_t)24*SIZEOF_PIXEL);
call_new(src1, (ptrdiff_t)24*SIZEOF_PIXEL);
if (memcmp(buf0, buf1, BUF_SIZE))
fail();
bench_new(src1, (ptrdiff_t)24*SIZEOF_PIXEL);
}
}
}
static void check_pred16x16(H264PredContext *h, uint8_t *buf0, uint8_t *buf1,
int codec, int chroma_format, int bit_depth)
{
if (chroma_format == 1) {
int pred_mode;
for (pred_mode = 0; pred_mode < 9; pred_mode++) {
if (check_pred_func(h->pred16x16[pred_mode], "16x16", pred16x16_modes[codec][pred_mode])) {
randomize_buffers();
call_ref(src0, (ptrdiff_t)48);
call_new(src1, (ptrdiff_t)48);
if (memcmp(buf0, buf1, BUF_SIZE))
fail();
bench_new(src1, (ptrdiff_t)48);
}
}
}
}
static void check_pred8x8l(H264PredContext *h, uint8_t *buf0, uint8_t *buf1,
int codec, int chroma_format, int bit_depth)
{
if (chroma_format == 1 && codec_ids[codec] == AV_CODEC_ID_H264) {
int pred_mode;
for (pred_mode = 0; pred_mode < 12; pred_mode++) {
if (check_pred_func(h->pred8x8l[pred_mode], "8x8l", pred4x4_modes[codec][pred_mode])) {
int neighbors;
for (neighbors = 0; neighbors <= 0xc000; neighbors += 0x4000) {
int has_topleft = neighbors & 0x8000;
int has_topright = neighbors & 0x4000;
if ((pred_mode == DIAG_DOWN_RIGHT_PRED || pred_mode == VERT_RIGHT_PRED) && !has_topleft)
continue; /* Those aren't allowed according to the spec */
randomize_buffers();
call_ref(src0, has_topleft, has_topright, (ptrdiff_t)24*SIZEOF_PIXEL);
call_new(src1, has_topleft, has_topright, (ptrdiff_t)24*SIZEOF_PIXEL);
if (memcmp(buf0, buf1, BUF_SIZE))
fail();
bench_new(src1, has_topleft, has_topright, (ptrdiff_t)24*SIZEOF_PIXEL);
}
}
}
}
}
/* TODO: Add tests for H.264 lossless H/V prediction */
void checkasm_check_h264pred(void)
{
static const struct {
void (*func)(H264PredContext*, uint8_t*, uint8_t*, int, int, int);
const char *name;
} tests[] = {
{ check_pred4x4, "pred4x4" },
{ check_pred8x8, "pred8x8" },
{ check_pred16x16, "pred16x16" },
{ check_pred8x8l, "pred8x8l" },
};
DECLARE_ALIGNED(16, uint8_t, buf0)[BUF_SIZE];
DECLARE_ALIGNED(16, uint8_t, buf1)[BUF_SIZE];
H264PredContext h;
int test, codec, chroma_format, bit_depth;
for (test = 0; test < FF_ARRAY_ELEMS(tests); test++) {
for (codec = 0; codec < 4; codec++) {
int codec_id = codec_ids[codec];
for (bit_depth = 8; bit_depth <= (codec_id == AV_CODEC_ID_H264 ? 10 : 8); bit_depth++)
for (chroma_format = 1; chroma_format <= (codec_id == AV_CODEC_ID_H264 ? 2 : 1); chroma_format++) {
ff_h264_pred_init(&h, codec_id, bit_depth, chroma_format);
tests[test].func(&h, buf0, buf1, codec, chroma_format, bit_depth);
}
}
report("%s", tests[test].name);
}
}
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