97 lines
3.6 KiB
C
97 lines
3.6 KiB
C
/* Copyright (C)2012 Xiph.Org Foundation
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File: opus_header.h
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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 OPUS_HEADER_H
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#define OPUS_HEADER_H
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#include <stdlib.h>
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#include <opus.h>
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#include <opus_multistream.h>
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#ifdef OPUS_HAVE_OPUS_PROJECTION_H
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#include <opus_projection.h>
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#endif
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typedef struct OpusGenericEncoder OpusGenericEncoder;
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struct OpusGenericEncoder {
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OpusMSEncoder *ms;
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#ifdef OPUS_HAVE_OPUS_PROJECTION_H
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OpusProjectionEncoder *pr;
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#endif
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};
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int opeint_use_projection(int channel_mapping);
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int opeint_encoder_surround_init(OpusGenericEncoder *st, int Fs, int channels, int channel_mapping, int *nb_streams, int *nb_coupled, unsigned char *stream_map, int application);
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void opeint_encoder_cleanup(OpusGenericEncoder *st);
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int opeint_encoder_init(OpusGenericEncoder *st, opus_int32 Fs, int channels, int streams, int coupled_streams, const unsigned char *mapping, int application);
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int opeint_encode_float(OpusGenericEncoder *st, const float *pcm, int frame_size, unsigned char *data, opus_int32 max_data_bytes);
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#ifdef OPUS_HAVE_OPUS_PROJECTION_H
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# define opeint_encoder_ctl(st, request) \
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((st)->pr!=NULL ? \
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opus_projection_encoder_ctl((st)->pr, request) : \
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opus_multistream_encoder_ctl((st)->ms, request))
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# define opeint_encoder_ctl2(st, request, value) \
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((st)->pr!=NULL ? \
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opus_projection_encoder_ctl((st)->pr, request, value) : \
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opus_multistream_encoder_ctl((st)->ms, request, value))
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#else
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# define opeint_encoder_ctl(st, request) \
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opus_multistream_encoder_ctl((st)->ms, request)
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# define opeint_encoder_ctl2(st, request, value) \
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opus_multistream_encoder_ctl((st)->ms, request, value)
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#endif
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typedef struct {
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int version;
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int channels; /* Number of channels: 1..255 */
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int preskip;
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opus_uint32 input_sample_rate;
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opus_int32 gain; /* in dB S7.8 should be zero whenever possible */
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int channel_mapping;
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/* The rest is only used if channel_mapping != 0 */
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int nb_streams;
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int nb_coupled;
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unsigned char stream_map[255];
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} OpusHeader;
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int opeint_opus_header_get_size(const OpusHeader *h);
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int opeint_opus_header_to_packet(const OpusHeader *h, unsigned char *packet, int len, const OpusGenericEncoder *st);
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void opeint_comment_init(char **comments, int* length, const char *vendor_string);
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int opeint_comment_add(char **comments, int* length, const char *tag, const char *val);
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void opeint_comment_pad(char **comments, int* length, int amount);
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#endif
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