201 lines
6.6 KiB
C
201 lines
6.6 KiB
C
/* Copyright (c) 2012 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 COPYRIGHT OWNER
|
|
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 OPUS_PRIVATE_H
|
|
#define OPUS_PRIVATE_H
|
|
|
|
#include "arch.h"
|
|
#include "opus.h"
|
|
#include "celt.h"
|
|
|
|
#include <stdarg.h> /* va_list */
|
|
#include <stddef.h> /* offsetof */
|
|
|
|
struct OpusRepacketizer {
|
|
unsigned char toc;
|
|
int nb_frames;
|
|
const unsigned char *frames[48];
|
|
opus_int16 len[48];
|
|
int framesize;
|
|
};
|
|
|
|
typedef struct ChannelLayout {
|
|
int nb_channels;
|
|
int nb_streams;
|
|
int nb_coupled_streams;
|
|
unsigned char mapping[256];
|
|
} ChannelLayout;
|
|
|
|
typedef enum {
|
|
MAPPING_TYPE_NONE,
|
|
MAPPING_TYPE_SURROUND,
|
|
MAPPING_TYPE_AMBISONICS
|
|
} MappingType;
|
|
|
|
struct OpusMSEncoder {
|
|
ChannelLayout layout;
|
|
int arch;
|
|
int lfe_stream;
|
|
int application;
|
|
int variable_duration;
|
|
MappingType mapping_type;
|
|
opus_int32 bitrate_bps;
|
|
/* Encoder states go here */
|
|
/* then opus_val32 window_mem[channels*120]; */
|
|
/* then opus_val32 preemph_mem[channels]; */
|
|
};
|
|
|
|
struct OpusMSDecoder {
|
|
ChannelLayout layout;
|
|
/* Decoder states go here */
|
|
};
|
|
|
|
int opus_multistream_encoder_ctl_va_list(struct OpusMSEncoder *st, int request,
|
|
va_list ap);
|
|
int opus_multistream_decoder_ctl_va_list(struct OpusMSDecoder *st, int request,
|
|
va_list ap);
|
|
|
|
int validate_layout(const ChannelLayout *layout);
|
|
int get_left_channel(const ChannelLayout *layout, int stream_id, int prev);
|
|
int get_right_channel(const ChannelLayout *layout, int stream_id, int prev);
|
|
int get_mono_channel(const ChannelLayout *layout, int stream_id, int prev);
|
|
|
|
typedef void (*opus_copy_channel_in_func)(
|
|
opus_val16 *dst,
|
|
int dst_stride,
|
|
const void *src,
|
|
int src_stride,
|
|
int src_channel,
|
|
int frame_size,
|
|
void *user_data
|
|
);
|
|
|
|
typedef void (*opus_copy_channel_out_func)(
|
|
void *dst,
|
|
int dst_stride,
|
|
int dst_channel,
|
|
const opus_val16 *src,
|
|
int src_stride,
|
|
int frame_size,
|
|
void *user_data
|
|
);
|
|
|
|
#define MODE_SILK_ONLY 1000
|
|
#define MODE_HYBRID 1001
|
|
#define MODE_CELT_ONLY 1002
|
|
|
|
#define OPUS_SET_VOICE_RATIO_REQUEST 11018
|
|
#define OPUS_GET_VOICE_RATIO_REQUEST 11019
|
|
|
|
/** Configures the encoder's expected percentage of voice
|
|
* opposed to music or other signals.
|
|
*
|
|
* @note This interface is currently more aspiration than actuality. It's
|
|
* ultimately expected to bias an automatic signal classifier, but it currently
|
|
* just shifts the static bitrate to mode mapping around a little bit.
|
|
*
|
|
* @param[in] x <tt>int</tt>: Voice percentage in the range 0-100, inclusive.
|
|
* @hideinitializer */
|
|
#define OPUS_SET_VOICE_RATIO(x) OPUS_SET_VOICE_RATIO_REQUEST, __opus_check_int(x)
|
|
/** Gets the encoder's configured voice ratio value, @see OPUS_SET_VOICE_RATIO
|
|
*
|
|
* @param[out] x <tt>int*</tt>: Voice percentage in the range 0-100, inclusive.
|
|
* @hideinitializer */
|
|
#define OPUS_GET_VOICE_RATIO(x) OPUS_GET_VOICE_RATIO_REQUEST, __opus_check_int_ptr(x)
|
|
|
|
|
|
#define OPUS_SET_FORCE_MODE_REQUEST 11002
|
|
#define OPUS_SET_FORCE_MODE(x) OPUS_SET_FORCE_MODE_REQUEST, __opus_check_int(x)
|
|
|
|
typedef void (*downmix_func)(const void *, opus_val32 *, int, int, int, int, int);
|
|
void downmix_float(const void *_x, opus_val32 *sub, int subframe, int offset, int c1, int c2, int C);
|
|
void downmix_int(const void *_x, opus_val32 *sub, int subframe, int offset, int c1, int c2, int C);
|
|
int is_digital_silence(const opus_val16* pcm, int frame_size, int channels, int lsb_depth);
|
|
|
|
int encode_size(int size, unsigned char *data);
|
|
|
|
opus_int32 frame_size_select(opus_int32 frame_size, int variable_duration, opus_int32 Fs);
|
|
|
|
opus_int32 opus_encode_native(OpusEncoder *st, const opus_val16 *pcm, int frame_size,
|
|
unsigned char *data, opus_int32 out_data_bytes, int lsb_depth,
|
|
const void *analysis_pcm, opus_int32 analysis_size, int c1, int c2,
|
|
int analysis_channels, downmix_func downmix, int float_api);
|
|
|
|
int opus_decode_native(OpusDecoder *st, const unsigned char *data, opus_int32 len,
|
|
opus_val16 *pcm, int frame_size, int decode_fec, int self_delimited,
|
|
opus_int32 *packet_offset, int soft_clip);
|
|
|
|
/* Make sure everything is properly aligned. */
|
|
static OPUS_INLINE int align(int i)
|
|
{
|
|
struct foo {char c; union { void* p; opus_int32 i; opus_val32 v; } u;};
|
|
|
|
unsigned int alignment = offsetof(struct foo, u);
|
|
|
|
/* Optimizing compilers should optimize div and multiply into and
|
|
for all sensible alignment values. */
|
|
return ((i + alignment - 1) / alignment) * alignment;
|
|
}
|
|
|
|
int opus_packet_parse_impl(const unsigned char *data, opus_int32 len,
|
|
int self_delimited, unsigned char *out_toc,
|
|
const unsigned char *frames[48], opus_int16 size[48],
|
|
int *payload_offset, opus_int32 *packet_offset);
|
|
|
|
opus_int32 opus_repacketizer_out_range_impl(OpusRepacketizer *rp, int begin, int end,
|
|
unsigned char *data, opus_int32 maxlen, int self_delimited, int pad);
|
|
|
|
int pad_frame(unsigned char *data, opus_int32 len, opus_int32 new_len);
|
|
|
|
int opus_multistream_encode_native
|
|
(
|
|
struct OpusMSEncoder *st,
|
|
opus_copy_channel_in_func copy_channel_in,
|
|
const void *pcm,
|
|
int analysis_frame_size,
|
|
unsigned char *data,
|
|
opus_int32 max_data_bytes,
|
|
int lsb_depth,
|
|
downmix_func downmix,
|
|
int float_api,
|
|
void *user_data
|
|
);
|
|
|
|
int opus_multistream_decode_native(
|
|
struct OpusMSDecoder *st,
|
|
const unsigned char *data,
|
|
opus_int32 len,
|
|
void *pcm,
|
|
opus_copy_channel_out_func copy_channel_out,
|
|
int frame_size,
|
|
int decode_fec,
|
|
int soft_clip,
|
|
void *user_data
|
|
);
|
|
|
|
#endif /* OPUS_PRIVATE_H */
|