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a35bcd032f
Update files to match the opus-1.0.0 source release. This corresponds to the spec implementation included in RFC 6716. Changes from the previous in-tree version (draft-12): - Add extern "C" protection on opus_multistream.h. - Align to sizeof(void*) instead of 4 bytes. - Copyright header updates for IETF publication. - Minor documentation and whitespace fixes.
182 lines
8.9 KiB
C
182 lines
8.9 KiB
C
/* Copyright (c) 2011-2012 IETF Trust, Xiph.Org Foundation. All rights reserved.
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Written by Jean-Marc Valin */
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/*
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This file is extracted from RFC6716. Please see that RFC for additional
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information.
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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 Internet Society, IETF or IETF Trust, nor the
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names of specific contributors, may be used to endorse or promote
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products derived from this software without specific prior written
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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 COPYRIGHT OWNER
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OR 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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/**
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* @file opus_multistream.h
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* @brief Opus reference implementation multistream API
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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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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct OpusMSEncoder OpusMSEncoder;
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typedef struct OpusMSDecoder OpusMSDecoder;
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#define __opus_check_encstate_ptr(ptr) ((ptr) + ((ptr) - (OpusEncoder**)(ptr)))
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#define __opus_check_decstate_ptr(ptr) ((ptr) + ((ptr) - (OpusDecoder**)(ptr)))
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#define OPUS_MULTISTREAM_GET_ENCODER_STATE_REQUEST 5120
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#define OPUS_MULTISTREAM_GET_DECODER_STATE_REQUEST 5122
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#define OPUS_MULTISTREAM_GET_ENCODER_STATE(x,y) OPUS_MULTISTREAM_GET_ENCODER_STATE_REQUEST, __opus_check_int(x), __opus_check_encstate_ptr(y)
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#define OPUS_MULTISTREAM_GET_DECODER_STATE(x,y) OPUS_MULTISTREAM_GET_DECODER_STATE_REQUEST, __opus_check_int(x), __opus_check_decstate_ptr(y)
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/** Allocate and initialize a multistream encoder state object.
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* Call opus_multistream_encoder_destroy() to release
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* this object when finished. */
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OPUS_EXPORT OpusMSEncoder *opus_multistream_encoder_create(
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opus_int32 Fs, /**< Sampling rate of input signal (Hz) */
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int channels, /**< Number of channels in the input signal */
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int streams, /**< Total number of streams to encode from the input */
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int coupled_streams, /**< Number of coupled (stereo) streams to encode */
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unsigned char *mapping, /**< Encoded mapping between channels and streams */
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int application, /**< Coding mode (OPUS_APPLICATION_VOIP/OPUS_APPLICATION_AUDIO) */
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int *error /**< Error code */
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);
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/** Initialize an already allocated multistream encoder state. */
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OPUS_EXPORT int opus_multistream_encoder_init(
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OpusMSEncoder *st, /**< Encoder state */
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opus_int32 Fs, /**< Sampling rate of input signal (Hz) */
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int channels, /**< Number of channels in the input signal */
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int streams, /**< Total number of streams to encode from the input */
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int coupled_streams, /**< Number of coupled (stereo) streams to encode */
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unsigned char *mapping, /**< Encoded mapping between channels and streams */
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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) or a negative error code */
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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 as interleaved samples. 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 buffer for the compressed 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) or a negative error code. */
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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 in channel order. 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 buffer for the compressed 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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/** Gets the size of an OpusMSEncoder structure.
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* @returns size
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*/
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OPUS_EXPORT opus_int32 opus_multistream_encoder_get_size(
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int streams, /**< Total number of coded streams */
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int coupled_streams /**< Number of coupled (stereo) streams */
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);
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/** Deallocate a multstream encoder state */
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OPUS_EXPORT void opus_multistream_encoder_destroy(OpusMSEncoder *st);
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/** Get or set options on a multistream encoder state */
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OPUS_EXPORT int opus_multistream_encoder_ctl(OpusMSEncoder *st, int request, ...);
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/** Allocate and initialize a multistream decoder state object.
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* Call opus_multistream_decoder_destroy() to release
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* this object when finished. */
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OPUS_EXPORT OpusMSDecoder *opus_multistream_decoder_create(
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opus_int32 Fs, /**< Sampling rate to decode at (Hz) */
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int channels, /**< Number of channels to decode */
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int streams, /**< Total number of coded streams in the multistream */
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int coupled_streams, /**< Number of coupled (stereo) streams in the multistream */
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unsigned char *mapping, /**< Stream to channel mapping table */
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int *error /**< Error code */
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);
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/** Intialize a previously allocated decoder state object. */
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OPUS_EXPORT int opus_multistream_decoder_init(
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OpusMSDecoder *st, /**< Encoder state */
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opus_int32 Fs, /**< Sample rate of input signal (Hz) */
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int channels, /**< Number of channels in the input signal */
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int streams, /**< Total number of coded streams */
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int coupled_streams, /**< Number of coupled (stereo) streams */
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unsigned char *mapping /**< Stream to channel mapping table */
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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, samples interleaved in channel order . 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 buffer. Use a NULL pointer to indicate packet loss */
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int len, /**< Number of payload bytes in data */
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float *pcm, /**< Buffer for the output signal (interleaved iin channel order). 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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/** Gets the size of an OpusMSDecoder structure.
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* @returns size
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*/
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OPUS_EXPORT opus_int32 opus_multistream_decoder_get_size(
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int streams, /**< Total number of coded streams */
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int coupled_streams /**< Number of coupled (stereo) streams */
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);
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/** Get or set options on a multistream decoder state */
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OPUS_EXPORT int opus_multistream_decoder_ctl(OpusMSDecoder *st, int request, ...);
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/** Deallocate a multistream decoder state object */
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OPUS_EXPORT void opus_multistream_decoder_destroy(OpusMSDecoder *st);
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#ifdef __cplusplus
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}
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#endif
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#endif /* OPUS_MULTISTREAM_H */
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