74 lines
2.8 KiB
C
74 lines
2.8 KiB
C
/* (C) 2008 Jean-Marc Valin, CSIRO
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*/
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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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- Neither the name of the Xiph.org Foundation nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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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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#include "celt_header.h"
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#include "os_support.h"
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/*typedef struct {
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char codec_id[8];
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char codec_version[20];
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celt_int32_t version_id;
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celt_int32_t header_size;
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celt_int32_t mode;
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celt_int32_t sample_rate;
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celt_int32_t nb_channels;
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celt_int32_t bytes_per_packet;
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celt_int32_t extra_headers;
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} CELTHeader;*/
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void celt_header_init(CELTHeader *header, celt_int32_t rate, celt_int32_t nb_channels, const CELTMode *m)
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{
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CELT_COPY(header->codec_id, "CELT ", 8);
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CELT_COPY(header->codec_version, "experimental ", 20);
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header->version_id = 0x80000000;
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header->header_size = 56;
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header->mode = 0;
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header->sample_rate = rate;
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header->nb_channels = nb_channels;
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header->bytes_per_packet = -1;
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header->extra_headers = 0xdeadbeef;
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}
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int celt_header_to_packet(const CELTHeader *header, unsigned char *packet, celt_uint32_t size)
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{
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CELT_MEMSET(packet, 0, sizeof(*header));
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/* FIXME: Do it in a endian-safe, alignment-safe, overflow-safe manner */
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CELT_COPY(packet, (unsigned char*)header, sizeof(*header));
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return sizeof(*header);
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}
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int celt_header_from_packet(const unsigned char *packet, celt_uint32_t size, CELTHeader *header)
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{
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CELT_COPY((unsigned char*)header, packet, sizeof(*header));
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return sizeof(*header);
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}
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