// Copyright 2023 The Chromium Authors // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #ifndef MEDIA_PARSERS_BIT_READER_MACROS_H_ #define MEDIA_PARSERS_BIT_READER_MACROS_H_ // Warning! Should only be included in .cc files. // Common bit reader macros shared by H.26x parsers. #define READ_BITS_OR_RETURN(num_bits, out) … #define READ_BITS_AND_MINUS_BITS_READ_OR_RETURN(num_bits, out, \ num_bits_remain) … #define SKIP_BITS_OR_RETURN(num_bits) … #define READ_BOOL_OR_RETURN(out) … #define READ_BOOL_AND_MINUS_BITS_READ_OR_RETURN(out, num_bits_remain) … // Exp-Golomb code parsing as specified in H.26x specifications. // Read one unsigned exp-Golomb code from the stream and return in |*out| // with total bits read return in |*bits_read|. #define READ_UE_WITH_BITS_READ_OR_RETURN(out, bits_read) … #define READ_UE_OR_RETURN(out) … #define READ_UE_AND_MINUS_BITS_READ_OR_RETURN(out, num_bits_remain) … // Read one signed exp-Golomb code from the stream and return in |*out|. #define READ_SE_OR_RETURN(out) … #define IN_RANGE_OR_RETURN(val, min, max) … #define TRUE_OR_RETURN(a) … #define EQ_OR_RETURN(shdr1, shdr2, field) … #define GT_OR_RETURN(val1, val2) … #define LE_OR_RETURN(val1, val2) … #define GE_OR_RETURN(val1, val2) … #define BYTE_ALIGNMENT() … #endif // MEDIA_PARSERS_BIT_READER_MACROS_H_
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