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