summaryrefslogtreecommitdiffstats
path: root/third_party/aom/tools/dump_obu.cc
blob: b9ff985c44619d1045bb99408d06f349e0485b54 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
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
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
/*
 * Copyright (c) 2017, Alliance for Open Media. All rights reserved
 *
 * This source code is subject to the terms of the BSD 2 Clause License and
 * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
 * was not distributed with this source code in the LICENSE file, you can
 * obtain it at www.aomedia.org/license/software. If the Alliance for Open
 * Media Patent License 1.0 was not distributed with this source code in the
 * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
 */

#include <stdlib.h>
#include <string.h>

#include <memory>
#include <string>

#include "config/aom_config.h"

#include "common/ivfdec.h"
#include "common/obudec.h"
#include "common/tools_common.h"
#include "common/webmdec.h"
#include "tools/obu_parser.h"

namespace {

const size_t kInitialBufferSize = 100 * 1024;

struct InputContext {
  InputContext() = default;
  ~InputContext() { free(unit_buffer); }

  void Init() {
    memset(avx_ctx, 0, sizeof(*avx_ctx));
    memset(obu_ctx, 0, sizeof(*obu_ctx));
    obu_ctx->avx_ctx = avx_ctx;
#if CONFIG_WEBM_IO
    memset(webm_ctx, 0, sizeof(*webm_ctx));
#endif
  }

  AvxInputContext *avx_ctx = nullptr;
  ObuDecInputContext *obu_ctx = nullptr;
#if CONFIG_WEBM_IO
  WebmInputContext *webm_ctx = nullptr;
#endif
  uint8_t *unit_buffer = nullptr;
  size_t unit_buffer_size = 0;
};

void PrintUsage() {
  printf("Libaom OBU dump.\nUsage: dump_obu <input_file>\n");
}

VideoFileType GetFileType(InputContext *ctx) {
  // TODO(https://crbug.com/aomedia/1706): webm type does not support reading
  // from stdin yet, and file_is_webm is not using the detect buffer when
  // determining the type. Therefore it should only be checked when using a file
  // and needs to be checked prior to other types.
#if CONFIG_WEBM_IO
  if (file_is_webm(ctx->webm_ctx, ctx->avx_ctx)) return FILE_TYPE_WEBM;
#endif
  if (file_is_ivf(ctx->avx_ctx)) return FILE_TYPE_IVF;
  if (file_is_obu(ctx->obu_ctx)) return FILE_TYPE_OBU;
  return FILE_TYPE_RAW;
}

bool ReadTemporalUnit(InputContext *ctx, size_t *unit_size) {
  const VideoFileType file_type = ctx->avx_ctx->file_type;
  switch (file_type) {
    case FILE_TYPE_IVF: {
      if (ivf_read_frame(ctx->avx_ctx, &ctx->unit_buffer, unit_size,
                         &ctx->unit_buffer_size, NULL)) {
        return false;
      }
      break;
    }
    case FILE_TYPE_OBU: {
      if (obudec_read_temporal_unit(ctx->obu_ctx, &ctx->unit_buffer, unit_size,
                                    &ctx->unit_buffer_size)) {
        return false;
      }
      break;
    }
#if CONFIG_WEBM_IO
    case FILE_TYPE_WEBM: {
      if (webm_read_frame(ctx->webm_ctx, &ctx->unit_buffer, unit_size,
                          &ctx->unit_buffer_size)) {
        return false;
      }
      break;
    }
#endif
    default:
      // TODO(tomfinegan): Abuse FILE_TYPE_RAW for AV1/OBU elementary streams?
      fprintf(stderr, "Error: Unsupported file type.\n");
      return false;
  }

  return true;
}

}  // namespace

int main(int argc, const char *argv[]) {
  // TODO(tomfinegan): Could do with some params for verbosity.
  if (argc < 2) {
    PrintUsage();
    return EXIT_SUCCESS;
  }

  const std::string filename = argv[1];

  using FilePtr = std::unique_ptr<FILE, decltype(&fclose)>;
  FilePtr input_file(fopen(filename.c_str(), "rb"), &fclose);
  if (input_file.get() == nullptr) {
    input_file.release();
    fprintf(stderr, "Error: Cannot open input file.\n");
    return EXIT_FAILURE;
  }

  AvxInputContext avx_ctx;
  InputContext input_ctx;
  input_ctx.avx_ctx = &avx_ctx;
  ObuDecInputContext obu_ctx;
  input_ctx.obu_ctx = &obu_ctx;
#if CONFIG_WEBM_IO
  WebmInputContext webm_ctx;
  input_ctx.webm_ctx = &webm_ctx;
#endif

  input_ctx.Init();
  avx_ctx.file = input_file.get();
  avx_ctx.file_type = GetFileType(&input_ctx);

  // Note: the reader utilities will realloc the buffer using realloc() etc.
  // Can't have nice things like unique_ptr wrappers with that type of
  // behavior underneath the function calls.
  input_ctx.unit_buffer =
      reinterpret_cast<uint8_t *>(calloc(kInitialBufferSize, 1));
  if (!input_ctx.unit_buffer) {
    fprintf(stderr, "Error: No memory, can't alloc input buffer.\n");
    return EXIT_FAILURE;
  }
  input_ctx.unit_buffer_size = kInitialBufferSize;

  size_t unit_size = 0;
  int unit_number = 0;
  int64_t obu_overhead_bytes_total = 0;
  while (ReadTemporalUnit(&input_ctx, &unit_size)) {
    printf("Temporal unit %d\n", unit_number);

    int obu_overhead_current_unit = 0;
    if (!aom_tools::DumpObu(input_ctx.unit_buffer, static_cast<int>(unit_size),
                            &obu_overhead_current_unit)) {
      fprintf(stderr, "Error: Temporal Unit parse failed on unit number %d.\n",
              unit_number);
      return EXIT_FAILURE;
    }
    printf("  OBU overhead:    %d\n", obu_overhead_current_unit);
    ++unit_number;
    obu_overhead_bytes_total += obu_overhead_current_unit;
  }

  printf("File total OBU overhead: %" PRId64 "\n", obu_overhead_bytes_total);
  return EXIT_SUCCESS;
}