ref: 3ccbd4803bcc75be860dd67bb3a56b114251433b
dir: libvpx/tools_common.c
/*
* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include <math.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "./tools_common.h"
#if CONFIG_VP8_ENCODER || CONFIG_VP9_ENCODER
#include "vpx/vp8cx.h"
#endif
#if CONFIG_VP8_DECODER || CONFIG_VP9_DECODER
#include "vpx/vp8dx.h"
#endif
#if defined(_WIN32) || defined(__OS2__)
#include <io.h>
#include <fcntl.h>
#ifdef __OS2__
#define _setmode setmode
#define _fileno fileno
#define _O_BINARY O_BINARY
#endif
#endif
#define LOG_ERROR(label) \
do { \
const char *l = label; \
va_list ap; \
va_start(ap, fmt); \
if (l) fprintf(stderr, "%s: ", l); \
vfprintf(stderr, fmt, ap); \
fprintf(stderr, "\n"); \
va_end(ap); \
} while (0)
#if CONFIG_ENCODERS
/* Swallow warnings about unused results of fread/fwrite */
static size_t wrap_fread(void *ptr, size_t size, size_t nmemb, FILE *stream) {
return fread(ptr, size, nmemb, stream);
}
#define fread wrap_fread
#endif
FILE *set_binary_mode(FILE *stream) {
(void)stream;
#if defined(_WIN32) || defined(__OS2__)
_setmode(_fileno(stream), _O_BINARY);
#endif
return stream;
}
void die(const char *fmt, ...) {
LOG_ERROR(NULL);
usage_exit();
}
void fatal(const char *fmt, ...) {
LOG_ERROR("Fatal");
exit(EXIT_FAILURE);
}
void warn(const char *fmt, ...) { LOG_ERROR("Warning"); }
void die_codec(vpx_codec_ctx_t *ctx, const char *s) {
const char *detail = vpx_codec_error_detail(ctx);
printf("%s: %s\n", s, vpx_codec_error(ctx));
if (detail) printf(" %s\n", detail);
exit(EXIT_FAILURE);
}
int read_yuv_frame(struct VpxInputContext *input_ctx, vpx_image_t *yuv_frame) {
FILE *f = input_ctx->file;
struct FileTypeDetectionBuffer *detect = &input_ctx->detect;
int plane = 0;
int shortread = 0;
const int bytespp = (yuv_frame->fmt & VPX_IMG_FMT_HIGHBITDEPTH) ? 2 : 1;
for (plane = 0; plane < 3; ++plane) {
uint8_t *ptr;
int w = vpx_img_plane_width(yuv_frame, plane);
const int h = vpx_img_plane_height(yuv_frame, plane);
int r;
// Assuming that for nv12 we read all chroma data at one time
if (yuv_frame->fmt == VPX_IMG_FMT_NV12 && plane > 1) break;
// Fixing NV12 chroma width it is odd
if (yuv_frame->fmt == VPX_IMG_FMT_NV12 && plane == 1) w = (w + 1) & ~1;
/* Determine the correct plane based on the image format. The for-loop
* always counts in Y,U,V order, but this may not match the order of
* the data on disk.
*/
switch (plane) {
case 1:
ptr =
yuv_frame->planes[yuv_frame->fmt == VPX_IMG_FMT_YV12 ? VPX_PLANE_V
: VPX_PLANE_U];
break;
case 2:
ptr =
yuv_frame->planes[yuv_frame->fmt == VPX_IMG_FMT_YV12 ? VPX_PLANE_U
: VPX_PLANE_V];
break;
default: ptr = yuv_frame->planes[plane];
}
for (r = 0; r < h; ++r) {
size_t needed = w * bytespp;
size_t buf_position = 0;
const size_t left = detect->buf_read - detect->position;
if (left > 0) {
const size_t more = (left < needed) ? left : needed;
memcpy(ptr, detect->buf + detect->position, more);
buf_position = more;
needed -= more;
detect->position += more;
}
if (needed > 0) {
shortread |= (fread(ptr + buf_position, 1, needed, f) < needed);
}
ptr += yuv_frame->stride[plane];
}
}
return shortread;
}
#if CONFIG_ENCODERS
static const VpxInterface vpx_encoders[] = {
#if CONFIG_VP8_ENCODER
{ "vp8", VP8_FOURCC, &vpx_codec_vp8_cx },
#endif
#if CONFIG_VP9_ENCODER
{ "vp9", VP9_FOURCC, &vpx_codec_vp9_cx },
#endif
};
int get_vpx_encoder_count(void) {
return sizeof(vpx_encoders) / sizeof(vpx_encoders[0]);
}
const VpxInterface *get_vpx_encoder_by_index(int i) { return &vpx_encoders[i]; }
const VpxInterface *get_vpx_encoder_by_name(const char *name) {
int i;
for (i = 0; i < get_vpx_encoder_count(); ++i) {
const VpxInterface *encoder = get_vpx_encoder_by_index(i);
if (strcmp(encoder->name, name) == 0) return encoder;
}
return NULL;
}
#endif // CONFIG_ENCODERS
#if CONFIG_DECODERS
static const VpxInterface vpx_decoders[] = {
#if CONFIG_VP8_DECODER
{ "vp8", VP8_FOURCC, &vpx_codec_vp8_dx },
#endif
#if CONFIG_VP9_DECODER
{ "vp9", VP9_FOURCC, &vpx_codec_vp9_dx },
#endif
};
int get_vpx_decoder_count(void) {
return sizeof(vpx_decoders) / sizeof(vpx_decoders[0]);
}
const VpxInterface *get_vpx_decoder_by_index(int i) { return &vpx_decoders[i]; }
const VpxInterface *get_vpx_decoder_by_name(const char *name) {
int i;
for (i = 0; i < get_vpx_decoder_count(); ++i) {
const VpxInterface *const decoder = get_vpx_decoder_by_index(i);
if (strcmp(decoder->name, name) == 0) return decoder;
}
return NULL;
}
const VpxInterface *get_vpx_decoder_by_fourcc(uint32_t fourcc) {
int i;
for (i = 0; i < get_vpx_decoder_count(); ++i) {
const VpxInterface *const decoder = get_vpx_decoder_by_index(i);
if (decoder->fourcc == fourcc) return decoder;
}
return NULL;
}
#endif // CONFIG_DECODERS
int vpx_img_plane_width(const vpx_image_t *img, int plane) {
if (plane > 0 && img->x_chroma_shift > 0)
return (img->d_w + 1) >> img->x_chroma_shift;
else
return img->d_w;
}
int vpx_img_plane_height(const vpx_image_t *img, int plane) {
if (plane > 0 && img->y_chroma_shift > 0)
return (img->d_h + 1) >> img->y_chroma_shift;
else
return img->d_h;
}
void vpx_img_write(const vpx_image_t *img, FILE *file) {
int plane;
for (plane = 0; plane < 3; ++plane) {
const unsigned char *buf = img->planes[plane];
const int stride = img->stride[plane];
const int w = vpx_img_plane_width(img, plane) *
((img->fmt & VPX_IMG_FMT_HIGHBITDEPTH) ? 2 : 1);
const int h = vpx_img_plane_height(img, plane);
int y;
for (y = 0; y < h; ++y) {
fwrite(buf, 1, w, file);
buf += stride;
}
}
}
int vpx_img_read(vpx_image_t *img, FILE *file) {
int plane;
for (plane = 0; plane < 3; ++plane) {
unsigned char *buf = img->planes[plane];
const int stride = img->stride[plane];
const int w = vpx_img_plane_width(img, plane) *
((img->fmt & VPX_IMG_FMT_HIGHBITDEPTH) ? 2 : 1);
const int h = vpx_img_plane_height(img, plane);
int y;
for (y = 0; y < h; ++y) {
if (fread(buf, 1, w, file) != (size_t)w) return 0;
buf += stride;
}
}
return 1;
}
// TODO(dkovalev) change sse_to_psnr signature: double -> int64_t
double sse_to_psnr(double samples, double peak, double sse) {
static const double kMaxPSNR = 100.0;
if (sse > 0.0) {
const double psnr = 10.0 * log10(samples * peak * peak / sse);
return psnr > kMaxPSNR ? kMaxPSNR : psnr;
} else {
return kMaxPSNR;
}
}
#if CONFIG_ENCODERS
int read_frame(struct VpxInputContext *input_ctx, vpx_image_t *img) {
FILE *f = input_ctx->file;
y4m_input *y4m = &input_ctx->y4m;
int shortread = 0;
if (input_ctx->file_type == FILE_TYPE_Y4M) {
if (y4m_input_fetch_frame(y4m, f, img) < 1) return 0;
} else {
shortread = read_yuv_frame(input_ctx, img);
}
return !shortread;
}
int file_is_y4m(const char detect[4]) {
if (memcmp(detect, "YUV4", 4) == 0) {
return 1;
}
return 0;
}
int fourcc_is_ivf(const char detect[4]) {
if (memcmp(detect, "DKIF", 4) == 0) {
return 1;
}
return 0;
}
void open_input_file(struct VpxInputContext *input) {
/* Parse certain options from the input file, if possible */
input->file = strcmp(input->filename, "-") ? fopen(input->filename, "rb")
: set_binary_mode(stdin);
if (!input->file) fatal("Failed to open input file");
if (!fseeko(input->file, 0, SEEK_END)) {
/* Input file is seekable. Figure out how long it is, so we can get
* progress info.
*/
input->length = ftello(input->file);
rewind(input->file);
}
/* Default to 1:1 pixel aspect ratio. */
input->pixel_aspect_ratio.numerator = 1;
input->pixel_aspect_ratio.denominator = 1;
/* For RAW input sources, these bytes will applied on the first frame
* in read_frame().
*/
input->detect.buf_read = fread(input->detect.buf, 1, 4, input->file);
input->detect.position = 0;
if (input->detect.buf_read == 4 && file_is_y4m(input->detect.buf)) {
if (y4m_input_open(&input->y4m, input->file, input->detect.buf, 4,
input->only_i420) >= 0) {
input->file_type = FILE_TYPE_Y4M;
input->width = input->y4m.pic_w;
input->height = input->y4m.pic_h;
input->pixel_aspect_ratio.numerator = input->y4m.par_n;
input->pixel_aspect_ratio.denominator = input->y4m.par_d;
input->framerate.numerator = input->y4m.fps_n;
input->framerate.denominator = input->y4m.fps_d;
input->fmt = input->y4m.vpx_fmt;
input->bit_depth = input->y4m.bit_depth;
} else {
fatal("Unsupported Y4M stream.");
}
} else if (input->detect.buf_read == 4 && fourcc_is_ivf(input->detect.buf)) {
fatal("IVF is not supported as input.");
} else {
input->file_type = FILE_TYPE_RAW;
}
}
void close_input_file(struct VpxInputContext *input) {
fclose(input->file);
if (input->file_type == FILE_TYPE_Y4M) y4m_input_close(&input->y4m);
}
#endif
// TODO(debargha): Consolidate the functions below into a separate file.
#if CONFIG_VP9_HIGHBITDEPTH
static void highbd_img_upshift(vpx_image_t *dst, vpx_image_t *src,
int input_shift) {
// Note the offset is 1 less than half.
const int offset = input_shift > 0 ? (1 << (input_shift - 1)) - 1 : 0;
int plane;
if (dst->d_w != src->d_w || dst->d_h != src->d_h ||
dst->x_chroma_shift != src->x_chroma_shift ||
dst->y_chroma_shift != src->y_chroma_shift || dst->fmt != src->fmt ||
input_shift < 0) {
fatal("Unsupported image conversion");
}
switch (src->fmt) {
case VPX_IMG_FMT_I42016:
case VPX_IMG_FMT_I42216:
case VPX_IMG_FMT_I44416:
case VPX_IMG_FMT_I44016: break;
default: fatal("Unsupported image conversion"); break;
}
for (plane = 0; plane < 3; plane++) {
int w = src->d_w;
int h = src->d_h;
int x, y;
if (plane) {
w = (w + src->x_chroma_shift) >> src->x_chroma_shift;
h = (h + src->y_chroma_shift) >> src->y_chroma_shift;
}
for (y = 0; y < h; y++) {
uint16_t *p_src =
(uint16_t *)(src->planes[plane] + y * src->stride[plane]);
uint16_t *p_dst =
(uint16_t *)(dst->planes[plane] + y * dst->stride[plane]);
for (x = 0; x < w; x++) *p_dst++ = (*p_src++ << input_shift) + offset;
}
}
}
static void lowbd_img_upshift(vpx_image_t *dst, vpx_image_t *src,
int input_shift) {
// Note the offset is 1 less than half.
const int offset = input_shift > 0 ? (1 << (input_shift - 1)) - 1 : 0;
int plane;
if (dst->d_w != src->d_w || dst->d_h != src->d_h ||
dst->x_chroma_shift != src->x_chroma_shift ||
dst->y_chroma_shift != src->y_chroma_shift ||
dst->fmt != src->fmt + VPX_IMG_FMT_HIGHBITDEPTH || input_shift < 0) {
fatal("Unsupported image conversion");
}
switch (src->fmt) {
case VPX_IMG_FMT_I420:
case VPX_IMG_FMT_I422:
case VPX_IMG_FMT_I444:
case VPX_IMG_FMT_I440: break;
default: fatal("Unsupported image conversion"); break;
}
for (plane = 0; plane < 3; plane++) {
int w = src->d_w;
int h = src->d_h;
int x, y;
if (plane) {
w = (w + src->x_chroma_shift) >> src->x_chroma_shift;
h = (h + src->y_chroma_shift) >> src->y_chroma_shift;
}
for (y = 0; y < h; y++) {
uint8_t *p_src = src->planes[plane] + y * src->stride[plane];
uint16_t *p_dst =
(uint16_t *)(dst->planes[plane] + y * dst->stride[plane]);
for (x = 0; x < w; x++) {
*p_dst++ = (*p_src++ << input_shift) + offset;
}
}
}
}
void vpx_img_upshift(vpx_image_t *dst, vpx_image_t *src, int input_shift) {
if (src->fmt & VPX_IMG_FMT_HIGHBITDEPTH) {
highbd_img_upshift(dst, src, input_shift);
} else {
lowbd_img_upshift(dst, src, input_shift);
}
}
void vpx_img_truncate_16_to_8(vpx_image_t *dst, vpx_image_t *src) {
int plane;
if (dst->fmt + VPX_IMG_FMT_HIGHBITDEPTH != src->fmt || dst->d_w != src->d_w ||
dst->d_h != src->d_h || dst->x_chroma_shift != src->x_chroma_shift ||
dst->y_chroma_shift != src->y_chroma_shift) {
fatal("Unsupported image conversion");
}
switch (dst->fmt) {
case VPX_IMG_FMT_I420:
case VPX_IMG_FMT_I422:
case VPX_IMG_FMT_I444:
case VPX_IMG_FMT_I440: break;
default: fatal("Unsupported image conversion"); break;
}
for (plane = 0; plane < 3; plane++) {
int w = src->d_w;
int h = src->d_h;
int x, y;
if (plane) {
w = (w + src->x_chroma_shift) >> src->x_chroma_shift;
h = (h + src->y_chroma_shift) >> src->y_chroma_shift;
}
for (y = 0; y < h; y++) {
uint16_t *p_src =
(uint16_t *)(src->planes[plane] + y * src->stride[plane]);
uint8_t *p_dst = dst->planes[plane] + y * dst->stride[plane];
for (x = 0; x < w; x++) {
*p_dst++ = (uint8_t)(*p_src++);
}
}
}
}
static void highbd_img_downshift(vpx_image_t *dst, vpx_image_t *src,
int down_shift) {
int plane;
if (dst->d_w != src->d_w || dst->d_h != src->d_h ||
dst->x_chroma_shift != src->x_chroma_shift ||
dst->y_chroma_shift != src->y_chroma_shift || dst->fmt != src->fmt ||
down_shift < 0) {
fatal("Unsupported image conversion");
}
switch (src->fmt) {
case VPX_IMG_FMT_I42016:
case VPX_IMG_FMT_I42216:
case VPX_IMG_FMT_I44416:
case VPX_IMG_FMT_I44016: break;
default: fatal("Unsupported image conversion"); break;
}
for (plane = 0; plane < 3; plane++) {
int w = src->d_w;
int h = src->d_h;
int x, y;
if (plane) {
w = (w + src->x_chroma_shift) >> src->x_chroma_shift;
h = (h + src->y_chroma_shift) >> src->y_chroma_shift;
}
for (y = 0; y < h; y++) {
uint16_t *p_src =
(uint16_t *)(src->planes[plane] + y * src->stride[plane]);
uint16_t *p_dst =
(uint16_t *)(dst->planes[plane] + y * dst->stride[plane]);
for (x = 0; x < w; x++) *p_dst++ = *p_src++ >> down_shift;
}
}
}
static void lowbd_img_downshift(vpx_image_t *dst, vpx_image_t *src,
int down_shift) {
int plane;
if (dst->d_w != src->d_w || dst->d_h != src->d_h ||
dst->x_chroma_shift != src->x_chroma_shift ||
dst->y_chroma_shift != src->y_chroma_shift ||
src->fmt != dst->fmt + VPX_IMG_FMT_HIGHBITDEPTH || down_shift < 0) {
fatal("Unsupported image conversion");
}
switch (dst->fmt) {
case VPX_IMG_FMT_I420:
case VPX_IMG_FMT_I422:
case VPX_IMG_FMT_I444:
case VPX_IMG_FMT_I440: break;
default: fatal("Unsupported image conversion"); break;
}
for (plane = 0; plane < 3; plane++) {
int w = src->d_w;
int h = src->d_h;
int x, y;
if (plane) {
w = (w + src->x_chroma_shift) >> src->x_chroma_shift;
h = (h + src->y_chroma_shift) >> src->y_chroma_shift;
}
for (y = 0; y < h; y++) {
uint16_t *p_src =
(uint16_t *)(src->planes[plane] + y * src->stride[plane]);
uint8_t *p_dst = dst->planes[plane] + y * dst->stride[plane];
for (x = 0; x < w; x++) {
*p_dst++ = *p_src++ >> down_shift;
}
}
}
}
void vpx_img_downshift(vpx_image_t *dst, vpx_image_t *src, int down_shift) {
if (dst->fmt & VPX_IMG_FMT_HIGHBITDEPTH) {
highbd_img_downshift(dst, src, down_shift);
} else {
lowbd_img_downshift(dst, src, down_shift);
}
}
#endif // CONFIG_VP9_HIGHBITDEPTH
int compare_img(const vpx_image_t *const img1, const vpx_image_t *const img2) {
uint32_t l_w = img1->d_w;
uint32_t c_w = (img1->d_w + img1->x_chroma_shift) >> img1->x_chroma_shift;
const uint32_t c_h =
(img1->d_h + img1->y_chroma_shift) >> img1->y_chroma_shift;
uint32_t i;
int match = 1;
match &= (img1->fmt == img2->fmt);
match &= (img1->d_w == img2->d_w);
match &= (img1->d_h == img2->d_h);
#if CONFIG_VP9_HIGHBITDEPTH
if (img1->fmt & VPX_IMG_FMT_HIGHBITDEPTH) {
l_w *= 2;
c_w *= 2;
}
#endif
for (i = 0; i < img1->d_h; ++i)
match &= (memcmp(img1->planes[VPX_PLANE_Y] + i * img1->stride[VPX_PLANE_Y],
img2->planes[VPX_PLANE_Y] + i * img2->stride[VPX_PLANE_Y],
l_w) == 0);
for (i = 0; i < c_h; ++i)
match &= (memcmp(img1->planes[VPX_PLANE_U] + i * img1->stride[VPX_PLANE_U],
img2->planes[VPX_PLANE_U] + i * img2->stride[VPX_PLANE_U],
c_w) == 0);
for (i = 0; i < c_h; ++i)
match &= (memcmp(img1->planes[VPX_PLANE_V] + i * img1->stride[VPX_PLANE_V],
img2->planes[VPX_PLANE_V] + i * img2->stride[VPX_PLANE_V],
c_w) == 0);
return match;
}
#define mmin(a, b) ((a) < (b) ? (a) : (b))
#if CONFIG_VP9_HIGHBITDEPTH
void find_mismatch_high(const vpx_image_t *const img1,
const vpx_image_t *const img2, int yloc[4], int uloc[4],
int vloc[4]) {
uint16_t *plane1, *plane2;
uint32_t stride1, stride2;
const uint32_t bsize = 64;
const uint32_t bsizey = bsize >> img1->y_chroma_shift;
const uint32_t bsizex = bsize >> img1->x_chroma_shift;
const uint32_t c_w =
(img1->d_w + img1->x_chroma_shift) >> img1->x_chroma_shift;
const uint32_t c_h =
(img1->d_h + img1->y_chroma_shift) >> img1->y_chroma_shift;
int match = 1;
uint32_t i, j;
yloc[0] = yloc[1] = yloc[2] = yloc[3] = -1;
plane1 = (uint16_t *)img1->planes[VPX_PLANE_Y];
plane2 = (uint16_t *)img2->planes[VPX_PLANE_Y];
stride1 = img1->stride[VPX_PLANE_Y] / 2;
stride2 = img2->stride[VPX_PLANE_Y] / 2;
for (i = 0, match = 1; match && i < img1->d_h; i += bsize) {
for (j = 0; match && j < img1->d_w; j += bsize) {
int k, l;
const int si = mmin(i + bsize, img1->d_h) - i;
const int sj = mmin(j + bsize, img1->d_w) - j;
for (k = 0; match && k < si; ++k) {
for (l = 0; match && l < sj; ++l) {
if (*(plane1 + (i + k) * stride1 + j + l) !=
*(plane2 + (i + k) * stride2 + j + l)) {
yloc[0] = i + k;
yloc[1] = j + l;
yloc[2] = *(plane1 + (i + k) * stride1 + j + l);
yloc[3] = *(plane2 + (i + k) * stride2 + j + l);
match = 0;
break;
}
}
}
}
}
uloc[0] = uloc[1] = uloc[2] = uloc[3] = -1;
plane1 = (uint16_t *)img1->planes[VPX_PLANE_U];
plane2 = (uint16_t *)img2->planes[VPX_PLANE_U];
stride1 = img1->stride[VPX_PLANE_U] / 2;
stride2 = img2->stride[VPX_PLANE_U] / 2;
for (i = 0, match = 1; match && i < c_h; i += bsizey) {
for (j = 0; match && j < c_w; j += bsizex) {
int k, l;
const int si = mmin(i + bsizey, c_h - i);
const int sj = mmin(j + bsizex, c_w - j);
for (k = 0; match && k < si; ++k) {
for (l = 0; match && l < sj; ++l) {
if (*(plane1 + (i + k) * stride1 + j + l) !=
*(plane2 + (i + k) * stride2 + j + l)) {
uloc[0] = i + k;
uloc[1] = j + l;
uloc[2] = *(plane1 + (i + k) * stride1 + j + l);
uloc[3] = *(plane2 + (i + k) * stride2 + j + l);
match = 0;
break;
}
}
}
}
}
vloc[0] = vloc[1] = vloc[2] = vloc[3] = -1;
plane1 = (uint16_t *)img1->planes[VPX_PLANE_V];
plane2 = (uint16_t *)img2->planes[VPX_PLANE_V];
stride1 = img1->stride[VPX_PLANE_V] / 2;
stride2 = img2->stride[VPX_PLANE_V] / 2;
for (i = 0, match = 1; match && i < c_h; i += bsizey) {
for (j = 0; match && j < c_w; j += bsizex) {
int k, l;
const int si = mmin(i + bsizey, c_h - i);
const int sj = mmin(j + bsizex, c_w - j);
for (k = 0; match && k < si; ++k) {
for (l = 0; match && l < sj; ++l) {
if (*(plane1 + (i + k) * stride1 + j + l) !=
*(plane2 + (i + k) * stride2 + j + l)) {
vloc[0] = i + k;
vloc[1] = j + l;
vloc[2] = *(plane1 + (i + k) * stride1 + j + l);
vloc[3] = *(plane2 + (i + k) * stride2 + j + l);
match = 0;
break;
}
}
}
}
}
}
#endif // CONFIG_VP9_HIGHBITDEPTH
void find_mismatch(const vpx_image_t *const img1, const vpx_image_t *const img2,
int yloc[4], int uloc[4], int vloc[4]) {
const uint32_t bsize = 64;
const uint32_t bsizey = bsize >> img1->y_chroma_shift;
const uint32_t bsizex = bsize >> img1->x_chroma_shift;
const uint32_t c_w =
(img1->d_w + img1->x_chroma_shift) >> img1->x_chroma_shift;
const uint32_t c_h =
(img1->d_h + img1->y_chroma_shift) >> img1->y_chroma_shift;
int match = 1;
uint32_t i, j;
yloc[0] = yloc[1] = yloc[2] = yloc[3] = -1;
for (i = 0, match = 1; match && i < img1->d_h; i += bsize) {
for (j = 0; match && j < img1->d_w; j += bsize) {
int k, l;
const int si = mmin(i + bsize, img1->d_h) - i;
const int sj = mmin(j + bsize, img1->d_w) - j;
for (k = 0; match && k < si; ++k) {
for (l = 0; match && l < sj; ++l) {
if (*(img1->planes[VPX_PLANE_Y] +
(i + k) * img1->stride[VPX_PLANE_Y] + j + l) !=
*(img2->planes[VPX_PLANE_Y] +
(i + k) * img2->stride[VPX_PLANE_Y] + j + l)) {
yloc[0] = i + k;
yloc[1] = j + l;
yloc[2] = *(img1->planes[VPX_PLANE_Y] +
(i + k) * img1->stride[VPX_PLANE_Y] + j + l);
yloc[3] = *(img2->planes[VPX_PLANE_Y] +
(i + k) * img2->stride[VPX_PLANE_Y] + j + l);
match = 0;
break;
}
}
}
}
}
uloc[0] = uloc[1] = uloc[2] = uloc[3] = -1;
for (i = 0, match = 1; match && i < c_h; i += bsizey) {
for (j = 0; match && j < c_w; j += bsizex) {
int k, l;
const int si = mmin(i + bsizey, c_h - i);
const int sj = mmin(j + bsizex, c_w - j);
for (k = 0; match && k < si; ++k) {
for (l = 0; match && l < sj; ++l) {
if (*(img1->planes[VPX_PLANE_U] +
(i + k) * img1->stride[VPX_PLANE_U] + j + l) !=
*(img2->planes[VPX_PLANE_U] +
(i + k) * img2->stride[VPX_PLANE_U] + j + l)) {
uloc[0] = i + k;
uloc[1] = j + l;
uloc[2] = *(img1->planes[VPX_PLANE_U] +
(i + k) * img1->stride[VPX_PLANE_U] + j + l);
uloc[3] = *(img2->planes[VPX_PLANE_U] +
(i + k) * img2->stride[VPX_PLANE_U] + j + l);
match = 0;
break;
}
}
}
}
}
vloc[0] = vloc[1] = vloc[2] = vloc[3] = -1;
for (i = 0, match = 1; match && i < c_h; i += bsizey) {
for (j = 0; match && j < c_w; j += bsizex) {
int k, l;
const int si = mmin(i + bsizey, c_h - i);
const int sj = mmin(j + bsizex, c_w - j);
for (k = 0; match && k < si; ++k) {
for (l = 0; match && l < sj; ++l) {
if (*(img1->planes[VPX_PLANE_V] +
(i + k) * img1->stride[VPX_PLANE_V] + j + l) !=
*(img2->planes[VPX_PLANE_V] +
(i + k) * img2->stride[VPX_PLANE_V] + j + l)) {
vloc[0] = i + k;
vloc[1] = j + l;
vloc[2] = *(img1->planes[VPX_PLANE_V] +
(i + k) * img1->stride[VPX_PLANE_V] + j + l);
vloc[3] = *(img2->planes[VPX_PLANE_V] +
(i + k) * img2->stride[VPX_PLANE_V] + j + l);
match = 0;
break;
}
}
}
}
}
}