1 files changed, 164 insertions, 0 deletions
diff --git a/media/libaom/src/tools/dump_obu.cc b/media/libaom/src/tools/dump_obu.cc
new file mode 100644
index 000000000..30ee5e7a1
--- /dev/null
+++ b/media/libaom/src/tools/dump_obu.cc
@@ -0,0 +1,164 @@
+/*
+ * 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) {
+  if (file_is_ivf(ctx->avx_ctx)) return FILE_TYPE_IVF;
+  if (file_is_obu(ctx->obu_ctx)) return FILE_TYPE_OBU;
+#if CONFIG_WEBM_IO
+  if (file_is_webm(ctx->webm_ctx, ctx->avx_ctx)) return FILE_TYPE_WEBM;
+#endif
+  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->file, &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;
+}