121 lines
5.8 KiB
C
121 lines
5.8 KiB
C
/* Copyright (c) 2011 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 OPUS_MULTISTREAM_H
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#define OPUS_MULTISTREAM_H
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#include "opus.h"
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typedef struct OpusMSEncoder OpusMSEncoder;
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typedef struct OpusMSDecoder OpusMSDecoder;
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OPUS_EXPORT OpusMSEncoder *opus_multistream_encoder_create(
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int Fs, /* Sampling rate of input signal (Hz) */
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int channels, /* Number of channels (1/2) in input signal */
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int streams,
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int coupled_streams,
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unsigned char *mapping,
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int application /* Coding mode (OPUS_APPLICATION_VOIP/OPUS_APPLICATION_AUDIO) */
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);
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OPUS_EXPORT int opus_multistream_encoder_init(
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OpusMSEncoder *st, /* Encoder state */
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int Fs, /* Sampling rate of input signal (Hz) */
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int channels, /* Number of channels (1/2) in input signal */
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int streams,
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int coupled_streams,
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unsigned char *mapping,
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int application /* Coding mode (OPUS_APPLICATION_VOIP/OPUS_APPLICATION_AUDIO) */
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);
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/* Returns length of the data payload (in bytes) */
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OPUS_EXPORT int opus_multistream_encode(
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OpusMSEncoder *st, /* Encoder state */
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const opus_int16 *pcm, /* Input signal (interleaved if 2 channels). length is frame_size*channels */
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int frame_size, /* Number of samples per frame of input signal */
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unsigned char *data, /* Output payload (no more than max_data_bytes long) */
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int max_data_bytes /* Allocated memory for payload; don't use for controlling bitrate */
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);
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/* Returns length of the data payload (in bytes) */
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OPUS_EXPORT int opus_multistream_encode_float(
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OpusMSEncoder *st, /* Encoder state */
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const float *pcm, /* Input signal (interleaved if 2 channels). length is frame_size*channels */
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int frame_size, /* Number of samples per frame of input signal */
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unsigned char *data, /* Output payload (no more than max_data_bytes long) */
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int max_data_bytes /* Allocated memory for payload; don't use for controlling bitrate */
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);
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OPUS_EXPORT void opus_multistream_encoder_destroy(OpusMSEncoder *st);
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OPUS_EXPORT int opus_multistream_encoder_ctl(OpusMSEncoder *st, int request, ...);
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OPUS_EXPORT OpusMSDecoder *opus_multistream_decoder_create(
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int Fs, /* Sampling rate of input signal (Hz) */
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int channels, /* Number of channels (1/2) in input signal */
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int streams,
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int coupled_streams,
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unsigned char *mapping
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);
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OPUS_EXPORT int opus_multistream_decoder_init(
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OpusMSDecoder *st, /* Encoder state */
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int Fs, /* Sampling rate of input signal (Hz) */
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int channels, /* Number of channels (1/2) in input signal */
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int streams,
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int coupled_streams,
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unsigned char *mapping
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);
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/* Returns the number of samples decoded or a negative error code */
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OPUS_EXPORT int opus_multistream_decode(
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OpusMSDecoder *st, /* Decoder state */
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const unsigned char *data, /* Input payload. Use a NULL pointer to indicate packet loss */
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int len, /* Number of bytes in payload */
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opus_int16 *pcm, /* Output signal (interleaved if 2 channels). length is frame_size*channels */
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int frame_size, /* Number of samples per frame of input signal */
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int decode_fec /* Flag (0/1) to request that any in-band forward error correction data be */
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/* decoded. If no such data is available the frame is decoded as if it were lost. */
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);
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/* Returns the number of samples decoded or a negative error code */
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OPUS_EXPORT int opus_multistream_decode_float(
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OpusMSDecoder *st, /* Decoder state */
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const unsigned char *data, /* Input payload. Use a NULL pointer to indicate packet loss */
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int len, /* Number of bytes in payload */
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float *pcm, /* Output signal (interleaved if 2 channels). length is frame_size*channels */
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int frame_size, /* Number of samples per frame of input signal */
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int decode_fec /* Flag (0/1) to request that any in-band forward error correction data be */
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/* decoded. If no such data is available the frame is decoded as if it were lost. */
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);
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OPUS_EXPORT int opus_multistream_decoder_ctl(OpusMSDecoder *st, int request, ...);
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OPUS_EXPORT void opus_multistream_decoder_destroy(OpusMSDecoder *st);
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#endif /* OPUS_MULTISTREAM_H */
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