xref: /aosp_15_r20/external/libwebm/webm_parser/src/void_parser.h (revision 103e46e4cd4b6efcf6001f23fa8665fb110abf8d)
1*103e46e4SHarish Mahendrakar // Copyright (c) 2016 The WebM project authors. All Rights Reserved.
2*103e46e4SHarish Mahendrakar //
3*103e46e4SHarish Mahendrakar // Use of this source code is governed by a BSD-style license
4*103e46e4SHarish Mahendrakar // that can be found in the LICENSE file in the root of the source
5*103e46e4SHarish Mahendrakar // tree. An additional intellectual property rights grant can be found
6*103e46e4SHarish Mahendrakar // in the file PATENTS.  All contributing project authors may
7*103e46e4SHarish Mahendrakar // be found in the AUTHORS file in the root of the source tree.
8*103e46e4SHarish Mahendrakar #ifndef SRC_VOID_PARSER_H_
9*103e46e4SHarish Mahendrakar #define SRC_VOID_PARSER_H_
10*103e46e4SHarish Mahendrakar 
11*103e46e4SHarish Mahendrakar #include <cstdint>
12*103e46e4SHarish Mahendrakar 
13*103e46e4SHarish Mahendrakar #include "src/element_parser.h"
14*103e46e4SHarish Mahendrakar #include "webm/callback.h"
15*103e46e4SHarish Mahendrakar #include "webm/reader.h"
16*103e46e4SHarish Mahendrakar #include "webm/status.h"
17*103e46e4SHarish Mahendrakar 
18*103e46e4SHarish Mahendrakar namespace webm {
19*103e46e4SHarish Mahendrakar 
20*103e46e4SHarish Mahendrakar // Parses a Void element by delegating to Callback::OnVoid.
21*103e46e4SHarish Mahendrakar // Spec reference:
22*103e46e4SHarish Mahendrakar // http://matroska.org/technical/specs/index.html#Void
23*103e46e4SHarish Mahendrakar // http://www.webmproject.org/docs/container/#Void
24*103e46e4SHarish Mahendrakar class VoidParser : public ElementParser {
25*103e46e4SHarish Mahendrakar  public:
26*103e46e4SHarish Mahendrakar   Status Init(const ElementMetadata& metadata, std::uint64_t max_size) override;
27*103e46e4SHarish Mahendrakar 
28*103e46e4SHarish Mahendrakar   Status Feed(Callback* callback, Reader* reader,
29*103e46e4SHarish Mahendrakar               std::uint64_t* num_bytes_read) override;
30*103e46e4SHarish Mahendrakar 
31*103e46e4SHarish Mahendrakar  private:
32*103e46e4SHarish Mahendrakar   // The metadata for this element.
33*103e46e4SHarish Mahendrakar   ElementMetadata metadata_;
34*103e46e4SHarish Mahendrakar 
35*103e46e4SHarish Mahendrakar   // The number of bytes remaining that have not been read in the element.
36*103e46e4SHarish Mahendrakar   std::uint64_t bytes_remaining_ = 0;
37*103e46e4SHarish Mahendrakar };
38*103e46e4SHarish Mahendrakar 
39*103e46e4SHarish Mahendrakar }  // namespace webm
40*103e46e4SHarish Mahendrakar 
41*103e46e4SHarish Mahendrakar #endif  // SRC_VOID_PARSER_H_
42