Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 57 insertions, 0 deletions

diff --git a/third_party/libwebrtc/modules/audio_coding/neteq/tools/audio_loop.h b/third_party/libwebrtc/modules/audio_coding/neteq/tools/audio_loop.h
new file mode 100644
index 0000000000..f5f0b59011
--- /dev/null
+++ b/third_party/libwebrtc/modules/audio_coding/neteq/tools/audio_loop.h
@@ -0,0 +1,57 @@
+/*
+ *  Copyright (c) 2013 The WebRTC 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.
+ */
+
+#ifndef MODULES_AUDIO_CODING_NETEQ_TOOLS_AUDIO_LOOP_H_
+#define MODULES_AUDIO_CODING_NETEQ_TOOLS_AUDIO_LOOP_H_
+
+#include <memory>
+#include <string>
+
+#include "absl/strings/string_view.h"
+#include "api/array_view.h"
+
+namespace webrtc {
+namespace test {
+
+// Class serving as an infinite source of audio, realized by looping an audio
+// clip.
+class AudioLoop {
+ public:
+  AudioLoop()
+      : next_index_(0), loop_length_samples_(0), block_length_samples_(0) {}
+
+  virtual ~AudioLoop() {}
+
+  AudioLoop(const AudioLoop&) = delete;
+  AudioLoop& operator=(const AudioLoop&) = delete;
+
+  // Initializes the AudioLoop by reading from `file_name`. The loop will be no
+  // longer than `max_loop_length_samples`, if the length of the file is
+  // greater. Otherwise, the loop length is the same as the file length.
+  // The audio will be delivered in blocks of `block_length_samples`.
+  // Returns false if the initialization failed, otherwise true.
+  bool Init(absl::string_view file_name,
+            size_t max_loop_length_samples,
+            size_t block_length_samples);
+
+  // Returns a (pointer,size) pair for the next block of audio. The size is
+  // equal to the `block_length_samples` Init() argument.
+  rtc::ArrayView<const int16_t> GetNextBlock();
+
+ private:
+  size_t next_index_;
+  size_t loop_length_samples_;
+  size_t block_length_samples_;
+  std::unique_ptr<int16_t[]> audio_array_;
+};
+
+}  // namespace test
+}  // namespace webrtc
+#endif  // MODULES_AUDIO_CODING_NETEQ_TOOLS_AUDIO_LOOP_H_