/* 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.
*/
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);
typedefvoid (*opus_copy_channel_in_func)(
opus_val16 *dst, int dst_stride, constvoid *src, int src_stride, int src_channel, int frame_size, void *user_data
);
typedefvoid (*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
);
/** 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)
typedefvoid (*downmix_func)(constvoid *, opus_val32 *, int, int, int, int, int); void downmix_float(constvoid *_x, opus_val32 *sub, int subframe, int offset, int c1, int c2, int C); void downmix_int(constvoid *_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, unsignedchar *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, unsignedchar *data, opus_int32 out_data_bytes, int lsb_depth, constvoid *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, constunsignedchar *data, opus_int32 len,
opus_val16 *pcm, int frame_size, int decode_fec, int self_delimited,
opus_int32 *packet_offset, int soft_clip, const OpusDRED *dred, opus_int32 dred_offset);
/* 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;};
unsignedint 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;
}
/* More than that is ridiculous for now (3 * max frames per packet)*/
opus_int32 skip_extension(constunsignedchar **data, opus_int32 len, opus_int32 *header_size);
int opus_packet_parse_impl(constunsignedchar *data, opus_int32 len, int self_delimited, unsignedchar *out_toc, constunsignedchar *frames[48], opus_int16 size[48], int *payload_offset, opus_int32 *packet_offset, constunsignedchar **padding, opus_int32 *padding_len);
opus_int32 opus_repacketizer_out_range_impl(OpusRepacketizer *rp, int begin, int end, unsignedchar *data, opus_int32 maxlen, int self_delimited, int pad, const opus_extension_data *extensions, int nb_extensions);
int pad_frame(unsignedchar *data, opus_int32 len, opus_int32 new_len);
int opus_multistream_encode_native
( struct OpusMSEncoder *st,
opus_copy_channel_in_func copy_channel_in, constvoid *pcm, int analysis_frame_size, unsignedchar *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, constunsignedchar *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
);
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