43 lines
1.4 KiB
C
43 lines
1.4 KiB
C
/**
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* FreeRDP: A Remote Desktop Protocol client.
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* RemoteFX Codec Library - Bit Stream
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*
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* Copyright 2011 Vic Lee
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __RFX_BITSTREAM_H
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#define __RFX_BITSTREAM_H
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#include <freerdp/rfx/rfx.h>
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struct _RFX_BITSTREAM
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{
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uint8* buffer;
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int nbytes;
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int byte_pos;
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int bits_left;
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};
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typedef struct _RFX_BITSTREAM RFX_BITSTREAM;
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void rfx_bitstream_attach(RFX_BITSTREAM* bs, uint8* buffer, int nbytes);
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uint16 rfx_bitstream_get_bits(RFX_BITSTREAM* bs, int nbits);
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void rfx_bitstream_put_bits(RFX_BITSTREAM* bs, uint16 bits, int nbits);
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#define rfx_bitstream_eos(_bs) ((_bs)->byte_pos >= (_bs)->nbytes)
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#define rfx_bitstream_left(_bs) ((_bs)->byte_pos >= (_bs)->nbytes ? 0 : ((_bs)->nbytes - (_bs)->byte_pos - 1) * 8 + (_bs)->bits_left)
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#define rfx_bitstream_get_processed_bytes(_bs) ((_bs)->bits_left < 8 ? (_bs)->byte_pos + 1 : (_bs)->byte_pos)
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#endif /* __RFX_BITSTREAM_H */
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