67 lines
2.8 KiB
C
67 lines
2.8 KiB
C
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/* Copyright (c) 2007 CSIRO
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Copyright (c) 2007-2008 Xiph.Org Foundation
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Written by Jean-Marc Valin */
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/*
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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- Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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- Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef CELT_HEADER_H
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#define CELT_HEADER_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "celt.h"
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#include "celt_types.h"
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/** Header data to be used for Ogg files (or possibly other encapsulation)
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@brief Header data
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*/
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typedef struct {
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char codec_id[8]; /**< MUST be "CELT " (four spaces) */
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char codec_version[20]; /**< Version used (as string) */
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celt_int32 version_id; /**< Version id (negative for until stream is frozen) */
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celt_int32 header_size; /**< Size of this header */
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celt_int32 sample_rate; /**< Sampling rate of the original audio */
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celt_int32 nb_channels; /**< Number of channels */
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celt_int32 frame_size; /**< Samples per frame (per channel) */
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celt_int32 overlap; /**< Overlapping samples (per channel) */
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celt_int32 bytes_per_packet; /**< Number of bytes per compressed packet (0 if unknown) */
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celt_int32 extra_headers; /**< Number of additional headers that follow this header */
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} CELTHeader;
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/** Creates a basic header struct */
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EXPORT int celt_header_init(CELTHeader *header, const CELTMode *m, int frame_size, int channels);
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EXPORT int celt_header_to_packet(const CELTHeader *header, unsigned char *packet, celt_uint32 size);
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EXPORT int celt_header_from_packet(const unsigned char *packet, celt_uint32 size, CELTHeader *header);
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#ifdef __cplusplus
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}
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#endif
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#endif /* CELT_HEADER_H */
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