Index: content/common/gpu/media/h264_bit_reader.h |
diff --git a/content/common/gpu/media/h264_bit_reader.h b/content/common/gpu/media/h264_bit_reader.h |
deleted file mode 100644 |
index a2d32b5c9cc8f994f46f20f4f4aed93d9d4ffbbb..0000000000000000000000000000000000000000 |
--- a/content/common/gpu/media/h264_bit_reader.h |
+++ /dev/null |
@@ -1,79 +0,0 @@ |
-// Copyright (c) 2012 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. |
-// |
-// This file contains an implementation of an H264 Annex-B video stream parser. |
- |
-#ifndef CONTENT_COMMON_GPU_MEDIA_H264_BIT_READER_H_ |
-#define CONTENT_COMMON_GPU_MEDIA_H264_BIT_READER_H_ |
- |
-#include <sys/types.h> |
- |
-#include "base/basictypes.h" |
-#include "content/common/content_export.h" |
- |
-namespace content { |
- |
-// A class to provide bit-granularity reading of H.264 streams. |
-// This is not a generic bit reader class, as it takes into account |
-// H.264 stream-specific constraints, such as skipping emulation-prevention |
-// bytes and stop bits. See spec for more details. |
-class CONTENT_EXPORT H264BitReader { |
- public: |
- H264BitReader(); |
- ~H264BitReader(); |
- |
- // Initialize the reader to start reading at |data|, |size| being size |
- // of |data| in bytes. |
- // Return false on insufficient size of stream.. |
- // TODO(posciak,fischman): consider replacing Initialize() with |
- // heap-allocating and creating bit readers on demand instead. |
- bool Initialize(const uint8* data, off_t size); |
- |
- // Read |num_bits| next bits from stream and return in |*out|, first bit |
- // from the stream starting at |num_bits| position in |*out|. |
- // |num_bits| may be 1-32, inclusive. |
- // Return false if the given number of bits cannot be read (not enough |
- // bits in the stream), true otherwise. |
- bool ReadBits(int num_bits, int *out); |
- |
- // Return the number of bits left in the stream. |
- off_t NumBitsLeft(); |
- |
- // See the definition of more_rbsp_data() in spec. |
- bool HasMoreRBSPData(); |
- |
- // Return the number of emulation prevention bytes already read. |
- size_t NumEmulationPreventionBytesRead(); |
- |
- private: |
- // Advance to the next byte, loading it into curr_byte_. |
- // Return false on end of stream. |
- bool UpdateCurrByte(); |
- |
- // Pointer to the next unread (not in curr_byte_) byte in the stream. |
- const uint8* data_; |
- |
- // Bytes left in the stream (without the curr_byte_). |
- off_t bytes_left_; |
- |
- // Contents of the current byte; first unread bit starting at position |
- // 8 - num_remaining_bits_in_curr_byte_ from MSB. |
- int curr_byte_; |
- |
- // Number of bits remaining in curr_byte_ |
- int num_remaining_bits_in_curr_byte_; |
- |
- // Used in emulation prevention three byte detection (see spec). |
- // Initially set to 0xffff to accept all initial two-byte sequences. |
- int prev_two_bytes_; |
- |
- // Number of emulation preventation bytes (0x000003) we met. |
- size_t emulation_prevention_bytes_; |
- |
- DISALLOW_COPY_AND_ASSIGN(H264BitReader); |
-}; |
- |
-} // namespace content |
- |
-#endif // CONTENT_COMMON_GPU_MEDIA_H264_BIT_READER_H_ |