ref: a51704d9c7642f568a64aeb87dc7d2e7c28e252b
dir: /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)
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;
const int w = vpx_img_plane_width(yuv_frame, plane);
const int h = vpx_img_plane_height(yuv_frame, plane);
int r;
/* 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;
}
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() {
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;
}
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() {
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;
}
// TODO(dkovalev): move this function to vpx_image.{c, h}, so it will be part
// of vpx_image_t support
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);
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;
}
}