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#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include "tools.h"
static const VpxInterface vpx_encoders[] = {
{ "vp8", VP8_FOURCC, &vpx_codec_vp8_cx },
{ "vp9", VP9_FOURCC, &vpx_codec_vp9_cx },
};
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;
}
static const VpxInterface vpx_decoders[] = {
{ "vp8", VP8_FOURCC, &vpx_codec_vp8_dx },
{ "vp9", VP9_FOURCC, &vpx_codec_vp9_dx },
};
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;
}
void die_codec(vpx_codec_ctx_t *ctx, const char *s) {
if (ctx) {
const char *detail = vpx_codec_error_detail(ctx);
fprintf(stderr, "%s: %s\n", s, vpx_codec_error(ctx));
if (detail) fprintf(stderr, " %s\n", detail);
} else {
fprintf(stderr, "%s", s);
}
exit(EXIT_FAILURE);
}
// 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;
}
int vpx_img_read(vpx_image_t *img, void *img_buf, int sz) {
int plane;
int off = 0;
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 (off + w > sz) return 0;
memcpy(buf, img_buf + off, w);
off += w;
buf += stride;
}
}
return 1;
}
int vpx_img_write(const vpx_image_t *img, void *img_buf, int sz) {
int plane;
int off = 0;
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) {
if (off + w > sz) return 0;
memcpy(img_buf + off, buf, w);
off += w;
buf += stride;
}
}
return 1;
}
int vpx_img_read_f(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;
}
int vpx_img_write_f(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) {
if (fwrite(buf, 1, w, file) != (size_t)w) return 0;
buf += stride;
}
}
return 1;
}
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