1 /* Copyright (c) 2012 Xiph.Org Foundation 2 Written by Jean-Marc Valin */ 3 /* 4 Redistribution and use in source and binary forms, with or without 5 modification, are permitted provided that the following conditions 6 are met: 7 8 - Redistributions of source code must retain the above copyright 9 notice, this list of conditions and the following disclaimer. 10 11 - Redistributions in binary form must reproduce the above copyright 12 notice, this list of conditions and the following disclaimer in the 13 documentation and/or other materials provided with the distribution. 14 15 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16 ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 18 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER 19 OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 20 EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 22 PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 23 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 24 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 25 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 29 #ifndef OPUS_PRIVATE_H 30 #define OPUS_PRIVATE_H 31 32 #include "arch.h" 33 #include "opus.h" 34 #include "celt.h" 35 36 struct OpusRepacketizer { 37 unsigned char toc; 38 int nb_frames; 39 const unsigned char *frames[48]; 40 opus_int16 len[48]; 41 int framesize; 42 }; 43 44 typedef struct ChannelLayout { 45 int nb_channels; 46 int nb_streams; 47 int nb_coupled_streams; 48 unsigned char mapping[256]; 49 } ChannelLayout; 50 51 int validate_layout(const ChannelLayout *layout); 52 int get_left_channel(const ChannelLayout *layout, int stream_id, int prev); 53 int get_right_channel(const ChannelLayout *layout, int stream_id, int prev); 54 int get_mono_channel(const ChannelLayout *layout, int stream_id, int prev); 55 56 57 58 #define MODE_SILK_ONLY 1000 59 #define MODE_HYBRID 1001 60 #define MODE_CELT_ONLY 1002 61 62 #define OPUS_SET_VOICE_RATIO_REQUEST 11018 63 #define OPUS_GET_VOICE_RATIO_REQUEST 11019 64 65 /** Configures the encoder's expected percentage of voice 66 * opposed to music or other signals. 67 * 68 * @note This interface is currently more aspiration than actuality. It's 69 * ultimately expected to bias an automatic signal classifier, but it currently 70 * just shifts the static bitrate to mode mapping around a little bit. 71 * 72 * @param[in] x <tt>int</tt>: Voice percentage in the range 0-100, inclusive. 73 * @hideinitializer */ 74 #define OPUS_SET_VOICE_RATIO(x) OPUS_SET_VOICE_RATIO_REQUEST, __opus_check_int(x) 75 /** Gets the encoder's configured voice ratio value, @see OPUS_SET_VOICE_RATIO 76 * 77 * @param[out] x <tt>int*</tt>: Voice percentage in the range 0-100, inclusive. 78 * @hideinitializer */ 79 #define OPUS_GET_VOICE_RATIO(x) OPUS_GET_VOICE_RATIO_REQUEST, __opus_check_int_ptr(x) 80 81 82 #define OPUS_SET_FORCE_MODE_REQUEST 11002 83 #define OPUS_SET_FORCE_MODE(x) OPUS_SET_FORCE_MODE_REQUEST, __opus_check_int(x) 84 85 typedef void (*downmix_func)(const void *, opus_val32 *, int, int, int, int, int); 86 void downmix_float(const void *_x, opus_val32 *sub, int subframe, int offset, int c1, int c2, int C); 87 void downmix_int(const void *_x, opus_val32 *sub, int subframe, int offset, int c1, int c2, int C); 88 89 int optimize_framesize(const opus_val16 *x, int len, int C, opus_int32 Fs, 90 int bitrate, opus_val16 tonality, float *mem, int buffering, 91 downmix_func downmix); 92 93 int encode_size(int size, unsigned char *data); 94 95 opus_int32 frame_size_select(opus_int32 frame_size, int variable_duration, opus_int32 Fs); 96 97 opus_int32 compute_frame_size(const void *analysis_pcm, int frame_size, 98 int variable_duration, int C, opus_int32 Fs, int bitrate_bps, 99 int delay_compensation, downmix_func downmix 100 #ifndef DISABLE_FLOAT_API 101 , float *subframe_mem 102 #endif 103 ); 104 105 opus_int32 opus_encode_native(OpusEncoder *st, const opus_val16 *pcm, int frame_size, 106 unsigned char *data, opus_int32 out_data_bytes, int lsb_depth, 107 const void *analysis_pcm, opus_int32 analysis_size, int c1, int c2, int analysis_channels, downmix_func downmix); 108 109 int opus_decode_native(OpusDecoder *st, const unsigned char *data, opus_int32 len, 110 opus_val16 *pcm, int frame_size, int decode_fec, int self_delimited, 111 opus_int32 *packet_offset, int soft_clip); 112 113 /* Make sure everything's aligned to sizeof(void *) bytes */ 114 static OPUS_INLINE int align(int i) 115 { 116 return (i+(int)sizeof(void *)-1)&-(int)sizeof(void *); 117 } 118 119 int opus_packet_parse_impl(const unsigned char *data, opus_int32 len, 120 int self_delimited, unsigned char *out_toc, 121 const unsigned char *frames[48], opus_int16 size[48], 122 int *payload_offset, opus_int32 *packet_offset); 123 124 opus_int32 opus_repacketizer_out_range_impl(OpusRepacketizer *rp, int begin, int end, 125 unsigned char *data, opus_int32 maxlen, int self_delimited, int pad); 126 127 int pad_frame(unsigned char *data, opus_int32 len, opus_int32 new_len); 128 129 #endif /* OPUS_PRIVATE_H */ 130
