tools_common.c 4.12 KB
Newer Older
1 2 3 4 5 6 7 8 9
/*
 *  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.
 */
10

11
#include "tools_common.h"
12 13

#include <stdarg.h>
14
#include <stdio.h>
15
#include <stdlib.h>
16
#include <string.h>
17

18 19 20 21
#if CONFIG_VP8_DECODER || CONFIG_VP9_DECODER
#include "vpx/vp8dx.h"
#endif

22
#if defined(_WIN32) || defined(__OS2__)
23 24
#include <io.h>
#include <fcntl.h>
25 26 27 28 29 30

#ifdef __OS2__
#define _setmode    setmode
#define _fileno     fileno
#define _O_BINARY   O_BINARY
#endif
31 32
#endif

33 34 35 36 37 38 39 40 41 42 43 44
#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)


John Koleszar's avatar
John Koleszar committed
45 46
FILE *set_binary_mode(FILE *stream) {
  (void)stream;
47
#if defined(_WIN32) || defined(__OS2__)
John Koleszar's avatar
John Koleszar committed
48
  _setmode(_fileno(stream), _O_BINARY);
49
#endif
John Koleszar's avatar
John Koleszar committed
50
  return stream;
51
}
52 53 54 55 56 57 58 59 60 61 62 63 64 65

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");
}
66

67 68 69 70 71 72 73 74 75
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);
}

76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145
uint16_t mem_get_le16(const void *data) {
  uint16_t val;
  const uint8_t *mem = (const uint8_t*)data;

  val = mem[1] << 8;
  val |= mem[0];
  return val;
}

uint32_t mem_get_le32(const void *data) {
  uint32_t val;
  const uint8_t *mem = (const uint8_t*)data;

  val = mem[3] << 24;
  val |= mem[2] << 16;
  val |= mem[1] << 8;
  val |= mem[0];
  return val;
}

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;

  for (plane = 0; plane < 3; ++plane) {
    uint8_t *ptr;
    const int w = (plane ? (1 + yuv_frame->d_w) / 2 : yuv_frame->d_w);
    const int h = (plane ? (1 + yuv_frame->d_h) / 2 : yuv_frame->d_h);
    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;
      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;
}
146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176

vpx_codec_iface_t *get_codec_interface(unsigned int fourcc) {
  switch (fourcc) {
#if CONFIG_VP8_DECODER
    case VP8_FOURCC:
      return vpx_codec_vp8_dx();
#endif
#if CONFIG_VP9_DECODER
    case VP9_FOURCC:
      return vpx_codec_vp9_dx();
#endif
    default:
      return NULL;
  }
  return NULL;
}

void vpx_img_write(const vpx_image_t *img, FILE *file) {
  int plane, y;

  for (plane = 0; plane < 3; ++plane) {
    const unsigned char *buf = img->planes[plane];
    const int stride = img->stride[plane];
    const int w = plane ? (img->d_w + 1) >> 1 : img->d_w;
    const int h = plane ? (img->d_h + 1) >> 1 : img->d_h;
    for (y = 0; y < h; ++y) {
      fwrite(buf, 1, w, file);
      buf += stride;
    }
  }
}