ffmpeg_h265_to_annex_b_bitstream_converter.h 1.8 KB

12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152
  1. // Copyright 2015 The Chromium Authors. All rights reserved.
  2. // Use of this source code is governed by a BSD-style license that can be
  3. // found in the LICENSE file.
  4. #ifndef MEDIA_FILTERS_FFMPEG_H265_TO_ANNEX_B_BITSTREAM_CONVERTER_H_
  5. #define MEDIA_FILTERS_FFMPEG_H265_TO_ANNEX_B_BITSTREAM_CONVERTER_H_
  6. #include <memory>
  7. #include "base/memory/raw_ptr.h"
  8. #include "media/base/media_export.h"
  9. #include "media/filters/ffmpeg_bitstream_converter.h"
  10. #include "media/formats/mp4/hevc.h"
  11. // Forward declarations for FFmpeg datatypes used.
  12. struct AVCodecParameters;
  13. struct AVPacket;
  14. namespace media {
  15. // Bitstream converter that converts H.265 bitstream based FFmpeg packets into
  16. // H.265 Annex B bytestream format.
  17. class MEDIA_EXPORT FFmpegH265ToAnnexBBitstreamConverter
  18. : public FFmpegBitstreamConverter {
  19. public:
  20. // The |stream_codec_parameters| will be used during conversion and should be
  21. // the AVCodecParameters for the stream sourcing these packets. A reference to
  22. // |stream_codec_parameters| is retained, so it must outlive this class.
  23. explicit FFmpegH265ToAnnexBBitstreamConverter(
  24. AVCodecParameters* stream_codec_parameters);
  25. FFmpegH265ToAnnexBBitstreamConverter(
  26. const FFmpegH265ToAnnexBBitstreamConverter&) = delete;
  27. FFmpegH265ToAnnexBBitstreamConverter& operator=(
  28. const FFmpegH265ToAnnexBBitstreamConverter&) = delete;
  29. ~FFmpegH265ToAnnexBBitstreamConverter() override;
  30. // FFmpegBitstreamConverter implementation.
  31. bool ConvertPacket(AVPacket* packet) override;
  32. private:
  33. std::unique_ptr<mp4::HEVCDecoderConfigurationRecord> hevc_config_;
  34. // Variable to hold a pointer to memory where we can access the global
  35. // data from the FFmpeg file format's global headers.
  36. raw_ptr<AVCodecParameters> stream_codec_parameters_;
  37. };
  38. } // namespace media
  39. #endif // MEDIA_FILTERS_FFMPEG_H265_TO_ANNEX_B_BITSTREAM_CONVERTER_H_