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Unified Diff: media/formats/mp4/hevc.h

Issue 816353010: Implemented HEVC video demuxing and parsing (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Rebase to ToT Created 5 years, 4 months ago
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Index: media/formats/mp4/hevc.h
diff --git a/media/formats/mp4/hevc.h b/media/formats/mp4/hevc.h
new file mode 100644
index 0000000000000000000000000000000000000000..4776f14c67b36e860a0782d797054d2dea2b7de7
--- /dev/null
+++ b/media/formats/mp4/hevc.h
@@ -0,0 +1,64 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef MEDIA_FORMATS_MP4_HEVC_H_
+#define MEDIA_FORMATS_MP4_HEVC_H_
+
+#include <vector>
+
+#include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
+#include "media/base/media_export.h"
+#include "media/formats/mp4/bitstream_converter.h"
+
+namespace media {
+
+struct SubsampleEntry;
+
+namespace mp4 {
+
+struct HEVCDecoderConfigurationRecord;
+
+class MEDIA_EXPORT HEVC {
+ public:
+ static bool ConvertConfigToAnnexB(
+ const HEVCDecoderConfigurationRecord& hevc_config,
+ std::vector<uint8>* buffer);
+
+ static bool InsertParamSetsAnnexB(
+ const HEVCDecoderConfigurationRecord& hevc_config,
+ std::vector<uint8>* buffer,
+ std::vector<SubsampleEntry>* subsamples);
+
+ // Verifies that the contents of |buffer| conform to
+ // Section 7.4.2.4.4 of ISO/IEC 23008-2.
+ // |subsamples| contains the information about what parts of the buffer are
+ // encrypted and which parts are clear.
+ // Returns true if |buffer| contains conformant Annex B data
+ // TODO(servolk): Remove the std::vector version when we can use,
+ // C++11's std::vector<T>::data() method.
+ static bool IsValidAnnexB(const std::vector<uint8>& buffer,
+ const std::vector<SubsampleEntry>& subsamples);
+ static bool IsValidAnnexB(const uint8* buffer, size_t size,
+ const std::vector<SubsampleEntry>& subsamples);
+};
+
+class HEVCBitstreamConverter : public BitstreamConverter {
+ public:
+ explicit HEVCBitstreamConverter(
+ scoped_ptr<HEVCDecoderConfigurationRecord> hevc_config);
+
+ // BitstreamConverter interface
+ bool ConvertFrame(std::vector<uint8>* frame_buf,
+ bool is_keyframe,
+ std::vector<SubsampleEntry>* subsamples) const override;
+ private:
+ ~HEVCBitstreamConverter() override;
+ scoped_ptr<HEVCDecoderConfigurationRecord> hevc_config_;
+};
+
+} // namespace mp4
+} // namespace media
+
+#endif // MEDIA_FORMATS_MP4_HEVC_H_

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