1329 lines
38 KiB
C
1329 lines
38 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 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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "opus_multistream.h"
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#include "opus.h"
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#include "opus_private.h"
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#include "stack_alloc.h"
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#include <stdarg.h>
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#include "float_cast.h"
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#include "os_support.h"
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#include "mathops.h"
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#include "mdct.h"
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#include "modes.h"
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#include "bands.h"
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#include "quant_bands.h"
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#include "pitch.h"
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typedef struct {
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int nb_streams;
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int nb_coupled_streams;
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unsigned char mapping[8];
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} VorbisLayout;
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/* Index is nb_channel-1*/
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static const VorbisLayout vorbis_mappings[8] = {
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{1, 0, {0}}, /* 1: mono */
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{1, 1, {0, 1}}, /* 2: stereo */
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{2, 1, {0, 2, 1}}, /* 3: 1-d surround */
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{2, 2, {0, 1, 2, 3}}, /* 4: quadraphonic surround */
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{3, 2, {0, 4, 1, 2, 3}}, /* 5: 5-channel surround */
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{4, 2, {0, 4, 1, 2, 3, 5}}, /* 6: 5.1 surround */
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{4, 3, {0, 4, 1, 2, 3, 5, 6}}, /* 7: 6.1 surround */
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{5, 3, {0, 6, 1, 2, 3, 4, 5, 7}}, /* 8: 7.1 surround */
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};
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static opus_val32 *ms_get_preemph_mem(OpusMSEncoder *st)
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{
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int s;
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char *ptr;
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int coupled_size, mono_size;
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coupled_size = opus_encoder_get_size(2);
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mono_size = opus_encoder_get_size(1);
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ptr = (char*)st + align(sizeof(OpusMSEncoder));
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for (s=0;s<st->layout.nb_streams;s++)
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{
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if (s < st->layout.nb_coupled_streams)
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ptr += align(coupled_size);
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else
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ptr += align(mono_size);
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}
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/* void* cast avoids clang -Wcast-align warning */
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return (opus_val32*)(void*)(ptr+st->layout.nb_channels*120*sizeof(opus_val32));
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}
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static opus_val32 *ms_get_window_mem(OpusMSEncoder *st)
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{
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int s;
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char *ptr;
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int coupled_size, mono_size;
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coupled_size = opus_encoder_get_size(2);
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mono_size = opus_encoder_get_size(1);
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ptr = (char*)st + align(sizeof(OpusMSEncoder));
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for (s=0;s<st->layout.nb_streams;s++)
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{
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if (s < st->layout.nb_coupled_streams)
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ptr += align(coupled_size);
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else
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ptr += align(mono_size);
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}
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/* void* cast avoids clang -Wcast-align warning */
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return (opus_val32*)(void*)ptr;
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}
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static int validate_ambisonics(int nb_channels, int *nb_streams, int *nb_coupled_streams)
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{
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int order_plus_one;
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int acn_channels;
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int nondiegetic_channels;
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if (nb_channels < 1 || nb_channels > 227)
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return 0;
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order_plus_one = isqrt32(nb_channels);
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acn_channels = order_plus_one * order_plus_one;
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nondiegetic_channels = nb_channels - acn_channels;
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if (nondiegetic_channels != 0 && nondiegetic_channels != 2)
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return 0;
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if (nb_streams)
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*nb_streams = acn_channels + (nondiegetic_channels != 0);
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if (nb_coupled_streams)
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*nb_coupled_streams = nondiegetic_channels != 0;
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return 1;
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}
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static int validate_encoder_layout(const ChannelLayout *layout)
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{
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int s;
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for (s=0;s<layout->nb_streams;s++)
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{
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if (s < layout->nb_coupled_streams)
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{
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if (get_left_channel(layout, s, -1)==-1)
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return 0;
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if (get_right_channel(layout, s, -1)==-1)
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return 0;
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} else {
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if (get_mono_channel(layout, s, -1)==-1)
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return 0;
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}
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}
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return 1;
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}
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static void channel_pos(int channels, int pos[8])
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{
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/* Position in the mix: 0 don't mix, 1: left, 2: center, 3:right */
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if (channels==4)
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{
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pos[0]=1;
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pos[1]=3;
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pos[2]=1;
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pos[3]=3;
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} else if (channels==3||channels==5||channels==6)
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{
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pos[0]=1;
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pos[1]=2;
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pos[2]=3;
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pos[3]=1;
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pos[4]=3;
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pos[5]=0;
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} else if (channels==7)
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{
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pos[0]=1;
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pos[1]=2;
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pos[2]=3;
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pos[3]=1;
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pos[4]=3;
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pos[5]=2;
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pos[6]=0;
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} else if (channels==8)
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{
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pos[0]=1;
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pos[1]=2;
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pos[2]=3;
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pos[3]=1;
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pos[4]=3;
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pos[5]=1;
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pos[6]=3;
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pos[7]=0;
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}
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}
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#if 1
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/* Computes a rough approximation of log2(2^a + 2^b) */
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static opus_val16 logSum(opus_val16 a, opus_val16 b)
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{
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opus_val16 max;
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opus_val32 diff;
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opus_val16 frac;
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static const opus_val16 diff_table[17] = {
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QCONST16(0.5000000f, DB_SHIFT), QCONST16(0.2924813f, DB_SHIFT), QCONST16(0.1609640f, DB_SHIFT), QCONST16(0.0849625f, DB_SHIFT),
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QCONST16(0.0437314f, DB_SHIFT), QCONST16(0.0221971f, DB_SHIFT), QCONST16(0.0111839f, DB_SHIFT), QCONST16(0.0056136f, DB_SHIFT),
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QCONST16(0.0028123f, DB_SHIFT)
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};
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int low;
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if (a>b)
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{
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max = a;
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diff = SUB32(EXTEND32(a),EXTEND32(b));
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} else {
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max = b;
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diff = SUB32(EXTEND32(b),EXTEND32(a));
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}
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if (!(diff < QCONST16(8.f, DB_SHIFT))) /* inverted to catch NaNs */
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return max;
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#ifdef FIXED_POINT
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low = SHR32(diff, DB_SHIFT-1);
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frac = SHL16(diff - SHL16(low, DB_SHIFT-1), 16-DB_SHIFT);
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#else
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low = (int)floor(2*diff);
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frac = 2*diff - low;
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#endif
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return max + diff_table[low] + MULT16_16_Q15(frac, SUB16(diff_table[low+1], diff_table[low]));
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}
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#else
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opus_val16 logSum(opus_val16 a, opus_val16 b)
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{
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return log2(pow(4, a)+ pow(4, b))/2;
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}
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#endif
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void surround_analysis(const CELTMode *celt_mode, const void *pcm, opus_val16 *bandLogE, opus_val32 *mem, opus_val32 *preemph_mem,
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int len, int overlap, int channels, int rate, opus_copy_channel_in_func copy_channel_in, int arch
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)
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{
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int c;
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int i;
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int LM;
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int pos[8] = {0};
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int upsample;
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int frame_size;
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int freq_size;
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opus_val16 channel_offset;
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opus_val32 bandE[21];
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opus_val16 maskLogE[3][21];
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VARDECL(opus_val32, in);
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VARDECL(opus_val16, x);
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VARDECL(opus_val32, freq);
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SAVE_STACK;
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upsample = resampling_factor(rate);
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frame_size = len*upsample;
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freq_size = IMIN(960, frame_size);
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/* LM = log2(frame_size / 120) */
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for (LM=0;LM<celt_mode->maxLM;LM++)
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if (celt_mode->shortMdctSize<<LM==frame_size)
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break;
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ALLOC(in, frame_size+overlap, opus_val32);
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ALLOC(x, len, opus_val16);
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ALLOC(freq, freq_size, opus_val32);
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channel_pos(channels, pos);
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for (c=0;c<3;c++)
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for (i=0;i<21;i++)
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maskLogE[c][i] = -QCONST16(28.f, DB_SHIFT);
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for (c=0;c<channels;c++)
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{
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int frame;
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int nb_frames = frame_size/freq_size;
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celt_assert(nb_frames*freq_size == frame_size);
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OPUS_COPY(in, mem+c*overlap, overlap);
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(*copy_channel_in)(x, 1, pcm, channels, c, len, NULL);
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celt_preemphasis(x, in+overlap, frame_size, 1, upsample, celt_mode->preemph, preemph_mem+c, 0);
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#ifndef FIXED_POINT
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{
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opus_val32 sum;
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sum = celt_inner_prod(in, in, frame_size+overlap, 0);
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/* This should filter out both NaNs and ridiculous signals that could
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cause NaNs further down. */
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if (!(sum < 1e18f) || celt_isnan(sum))
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{
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OPUS_CLEAR(in, frame_size+overlap);
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preemph_mem[c] = 0;
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}
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}
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#endif
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OPUS_CLEAR(bandE, 21);
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for (frame=0;frame<nb_frames;frame++)
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{
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opus_val32 tmpE[21];
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clt_mdct_forward(&celt_mode->mdct, in+960*frame, freq, celt_mode->window,
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overlap, celt_mode->maxLM-LM, 1, arch);
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if (upsample != 1)
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{
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int bound = freq_size/upsample;
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for (i=0;i<bound;i++)
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freq[i] *= upsample;
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for (;i<freq_size;i++)
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freq[i] = 0;
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}
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compute_band_energies(celt_mode, freq, tmpE, 21, 1, LM, arch);
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/* If we have multiple frames, take the max energy. */
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for (i=0;i<21;i++)
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bandE[i] = MAX32(bandE[i], tmpE[i]);
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}
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amp2Log2(celt_mode, 21, 21, bandE, bandLogE+21*c, 1);
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/* Apply spreading function with -6 dB/band going up and -12 dB/band going down. */
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for (i=1;i<21;i++)
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bandLogE[21*c+i] = MAX16(bandLogE[21*c+i], bandLogE[21*c+i-1]-QCONST16(1.f, DB_SHIFT));
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for (i=19;i>=0;i--)
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bandLogE[21*c+i] = MAX16(bandLogE[21*c+i], bandLogE[21*c+i+1]-QCONST16(2.f, DB_SHIFT));
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if (pos[c]==1)
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{
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for (i=0;i<21;i++)
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maskLogE[0][i] = logSum(maskLogE[0][i], bandLogE[21*c+i]);
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} else if (pos[c]==3)
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{
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for (i=0;i<21;i++)
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maskLogE[2][i] = logSum(maskLogE[2][i], bandLogE[21*c+i]);
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} else if (pos[c]==2)
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{
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for (i=0;i<21;i++)
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{
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maskLogE[0][i] = logSum(maskLogE[0][i], bandLogE[21*c+i]-QCONST16(.5f, DB_SHIFT));
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maskLogE[2][i] = logSum(maskLogE[2][i], bandLogE[21*c+i]-QCONST16(.5f, DB_SHIFT));
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}
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}
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#if 0
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for (i=0;i<21;i++)
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printf("%f ", bandLogE[21*c+i]);
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float sum=0;
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for (i=0;i<21;i++)
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sum += bandLogE[21*c+i];
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printf("%f ", sum/21);
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#endif
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OPUS_COPY(mem+c*overlap, in+frame_size, overlap);
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}
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for (i=0;i<21;i++)
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maskLogE[1][i] = MIN32(maskLogE[0][i],maskLogE[2][i]);
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channel_offset = HALF16(celt_log2(QCONST32(2.f,14)/(channels-1)));
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for (c=0;c<3;c++)
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for (i=0;i<21;i++)
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maskLogE[c][i] += channel_offset;
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#if 0
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for (c=0;c<3;c++)
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{
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for (i=0;i<21;i++)
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printf("%f ", maskLogE[c][i]);
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}
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#endif
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for (c=0;c<channels;c++)
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{
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opus_val16 *mask;
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if (pos[c]!=0)
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{
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mask = &maskLogE[pos[c]-1][0];
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for (i=0;i<21;i++)
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bandLogE[21*c+i] = bandLogE[21*c+i] - mask[i];
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} else {
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for (i=0;i<21;i++)
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bandLogE[21*c+i] = 0;
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}
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#if 0
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for (i=0;i<21;i++)
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printf("%f ", bandLogE[21*c+i]);
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printf("\n");
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#endif
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#if 0
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float sum=0;
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for (i=0;i<21;i++)
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sum += bandLogE[21*c+i];
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printf("%f ", sum/(float)QCONST32(21.f, DB_SHIFT));
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printf("\n");
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#endif
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}
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RESTORE_STACK;
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}
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opus_int32 opus_multistream_encoder_get_size(int nb_streams, int nb_coupled_streams)
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{
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int coupled_size;
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int mono_size;
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if(nb_streams<1||nb_coupled_streams>nb_streams||nb_coupled_streams<0)return 0;
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coupled_size = opus_encoder_get_size(2);
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mono_size = opus_encoder_get_size(1);
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return align(sizeof(OpusMSEncoder))
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+ nb_coupled_streams * align(coupled_size)
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+ (nb_streams-nb_coupled_streams) * align(mono_size);
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}
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opus_int32 opus_multistream_surround_encoder_get_size(int channels, int mapping_family)
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{
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int nb_streams;
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int nb_coupled_streams;
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opus_int32 size;
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if (mapping_family==0)
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{
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if (channels==1)
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{
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nb_streams=1;
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nb_coupled_streams=0;
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} else if (channels==2)
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{
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nb_streams=1;
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nb_coupled_streams=1;
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} else
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return 0;
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} else if (mapping_family==1 && channels<=8 && channels>=1)
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{
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nb_streams=vorbis_mappings[channels-1].nb_streams;
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nb_coupled_streams=vorbis_mappings[channels-1].nb_coupled_streams;
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} else if (mapping_family==255)
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{
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nb_streams=channels;
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nb_coupled_streams=0;
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} else if (mapping_family==2)
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{
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if (!validate_ambisonics(channels, &nb_streams, &nb_coupled_streams))
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return 0;
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} else
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return 0;
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size = opus_multistream_encoder_get_size(nb_streams, nb_coupled_streams);
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if (channels>2)
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{
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size += channels*(120*sizeof(opus_val32) + sizeof(opus_val32));
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}
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return size;
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}
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static int opus_multistream_encoder_init_impl(
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OpusMSEncoder *st,
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opus_int32 Fs,
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int channels,
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int streams,
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int coupled_streams,
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const unsigned char *mapping,
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int application,
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MappingType mapping_type
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)
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{
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int coupled_size;
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int mono_size;
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int i, ret;
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char *ptr;
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if ((channels>255) || (channels<1) || (coupled_streams>streams) ||
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(streams<1) || (coupled_streams<0) || (streams>255-coupled_streams))
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return OPUS_BAD_ARG;
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st->arch = opus_select_arch();
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st->layout.nb_channels = channels;
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st->layout.nb_streams = streams;
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st->layout.nb_coupled_streams = coupled_streams;
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if (mapping_type != MAPPING_TYPE_SURROUND)
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st->lfe_stream = -1;
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st->bitrate_bps = OPUS_AUTO;
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st->application = application;
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st->variable_duration = OPUS_FRAMESIZE_ARG;
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for (i=0;i<st->layout.nb_channels;i++)
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st->layout.mapping[i] = mapping[i];
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if (!validate_layout(&st->layout))
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return OPUS_BAD_ARG;
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if (mapping_type == MAPPING_TYPE_SURROUND &&
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!validate_encoder_layout(&st->layout))
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return OPUS_BAD_ARG;
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if (mapping_type == MAPPING_TYPE_AMBISONICS &&
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!validate_ambisonics(st->layout.nb_channels, NULL, NULL))
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return OPUS_BAD_ARG;
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ptr = (char*)st + align(sizeof(OpusMSEncoder));
|
|
coupled_size = opus_encoder_get_size(2);
|
|
mono_size = opus_encoder_get_size(1);
|
|
|
|
for (i=0;i<st->layout.nb_coupled_streams;i++)
|
|
{
|
|
ret = opus_encoder_init((OpusEncoder*)ptr, Fs, 2, application);
|
|
if(ret!=OPUS_OK)return ret;
|
|
if (i==st->lfe_stream)
|
|
opus_encoder_ctl((OpusEncoder*)ptr, OPUS_SET_LFE(1));
|
|
ptr += align(coupled_size);
|
|
}
|
|
for (;i<st->layout.nb_streams;i++)
|
|
{
|
|
ret = opus_encoder_init((OpusEncoder*)ptr, Fs, 1, application);
|
|
if (i==st->lfe_stream)
|
|
opus_encoder_ctl((OpusEncoder*)ptr, OPUS_SET_LFE(1));
|
|
if(ret!=OPUS_OK)return ret;
|
|
ptr += align(mono_size);
|
|
}
|
|
if (mapping_type == MAPPING_TYPE_SURROUND)
|
|
{
|
|
OPUS_CLEAR(ms_get_preemph_mem(st), channels);
|
|
OPUS_CLEAR(ms_get_window_mem(st), channels*120);
|
|
}
|
|
st->mapping_type = mapping_type;
|
|
return OPUS_OK;
|
|
}
|
|
|
|
int opus_multistream_encoder_init(
|
|
OpusMSEncoder *st,
|
|
opus_int32 Fs,
|
|
int channels,
|
|
int streams,
|
|
int coupled_streams,
|
|
const unsigned char *mapping,
|
|
int application
|
|
)
|
|
{
|
|
return opus_multistream_encoder_init_impl(st, Fs, channels, streams,
|
|
coupled_streams, mapping,
|
|
application, MAPPING_TYPE_NONE);
|
|
}
|
|
|
|
int opus_multistream_surround_encoder_init(
|
|
OpusMSEncoder *st,
|
|
opus_int32 Fs,
|
|
int channels,
|
|
int mapping_family,
|
|
int *streams,
|
|
int *coupled_streams,
|
|
unsigned char *mapping,
|
|
int application
|
|
)
|
|
{
|
|
MappingType mapping_type;
|
|
|
|
if ((channels>255) || (channels<1))
|
|
return OPUS_BAD_ARG;
|
|
st->lfe_stream = -1;
|
|
if (mapping_family==0)
|
|
{
|
|
if (channels==1)
|
|
{
|
|
*streams=1;
|
|
*coupled_streams=0;
|
|
mapping[0]=0;
|
|
} else if (channels==2)
|
|
{
|
|
*streams=1;
|
|
*coupled_streams=1;
|
|
mapping[0]=0;
|
|
mapping[1]=1;
|
|
} else
|
|
return OPUS_UNIMPLEMENTED;
|
|
} else if (mapping_family==1 && channels<=8 && channels>=1)
|
|
{
|
|
int i;
|
|
*streams=vorbis_mappings[channels-1].nb_streams;
|
|
*coupled_streams=vorbis_mappings[channels-1].nb_coupled_streams;
|
|
for (i=0;i<channels;i++)
|
|
mapping[i] = vorbis_mappings[channels-1].mapping[i];
|
|
if (channels>=6)
|
|
st->lfe_stream = *streams-1;
|
|
} else if (mapping_family==255)
|
|
{
|
|
int i;
|
|
*streams=channels;
|
|
*coupled_streams=0;
|
|
for(i=0;i<channels;i++)
|
|
mapping[i] = i;
|
|
} else if (mapping_family==2)
|
|
{
|
|
int i;
|
|
if (!validate_ambisonics(channels, streams, coupled_streams))
|
|
return OPUS_BAD_ARG;
|
|
for(i = 0; i < (*streams - *coupled_streams); i++)
|
|
mapping[i] = i + (*coupled_streams * 2);
|
|
for(i = 0; i < *coupled_streams * 2; i++)
|
|
mapping[i + (*streams - *coupled_streams)] = i;
|
|
} else
|
|
return OPUS_UNIMPLEMENTED;
|
|
|
|
if (channels>2 && mapping_family==1) {
|
|
mapping_type = MAPPING_TYPE_SURROUND;
|
|
} else if (mapping_family==2)
|
|
{
|
|
mapping_type = MAPPING_TYPE_AMBISONICS;
|
|
} else
|
|
{
|
|
mapping_type = MAPPING_TYPE_NONE;
|
|
}
|
|
return opus_multistream_encoder_init_impl(st, Fs, channels, *streams,
|
|
*coupled_streams, mapping,
|
|
application, mapping_type);
|
|
}
|
|
|
|
OpusMSEncoder *opus_multistream_encoder_create(
|
|
opus_int32 Fs,
|
|
int channels,
|
|
int streams,
|
|
int coupled_streams,
|
|
const unsigned char *mapping,
|
|
int application,
|
|
int *error
|
|
)
|
|
{
|
|
int ret;
|
|
OpusMSEncoder *st;
|
|
if ((channels>255) || (channels<1) || (coupled_streams>streams) ||
|
|
(streams<1) || (coupled_streams<0) || (streams>255-coupled_streams))
|
|
{
|
|
if (error)
|
|
*error = OPUS_BAD_ARG;
|
|
return NULL;
|
|
}
|
|
st = (OpusMSEncoder *)opus_alloc(opus_multistream_encoder_get_size(streams, coupled_streams));
|
|
if (st==NULL)
|
|
{
|
|
if (error)
|
|
*error = OPUS_ALLOC_FAIL;
|
|
return NULL;
|
|
}
|
|
ret = opus_multistream_encoder_init(st, Fs, channels, streams, coupled_streams, mapping, application);
|
|
if (ret != OPUS_OK)
|
|
{
|
|
opus_free(st);
|
|
st = NULL;
|
|
}
|
|
if (error)
|
|
*error = ret;
|
|
return st;
|
|
}
|
|
|
|
OpusMSEncoder *opus_multistream_surround_encoder_create(
|
|
opus_int32 Fs,
|
|
int channels,
|
|
int mapping_family,
|
|
int *streams,
|
|
int *coupled_streams,
|
|
unsigned char *mapping,
|
|
int application,
|
|
int *error
|
|
)
|
|
{
|
|
int ret;
|
|
opus_int32 size;
|
|
OpusMSEncoder *st;
|
|
if ((channels>255) || (channels<1))
|
|
{
|
|
if (error)
|
|
*error = OPUS_BAD_ARG;
|
|
return NULL;
|
|
}
|
|
size = opus_multistream_surround_encoder_get_size(channels, mapping_family);
|
|
if (!size)
|
|
{
|
|
if (error)
|
|
*error = OPUS_UNIMPLEMENTED;
|
|
return NULL;
|
|
}
|
|
st = (OpusMSEncoder *)opus_alloc(size);
|
|
if (st==NULL)
|
|
{
|
|
if (error)
|
|
*error = OPUS_ALLOC_FAIL;
|
|
return NULL;
|
|
}
|
|
ret = opus_multistream_surround_encoder_init(st, Fs, channels, mapping_family, streams, coupled_streams, mapping, application);
|
|
if (ret != OPUS_OK)
|
|
{
|
|
opus_free(st);
|
|
st = NULL;
|
|
}
|
|
if (error)
|
|
*error = ret;
|
|
return st;
|
|
}
|
|
|
|
static void surround_rate_allocation(
|
|
OpusMSEncoder *st,
|
|
opus_int32 *rate,
|
|
int frame_size,
|
|
opus_int32 Fs
|
|
)
|
|
{
|
|
int i;
|
|
opus_int32 channel_rate;
|
|
int stream_offset;
|
|
int lfe_offset;
|
|
int coupled_ratio; /* Q8 */
|
|
int lfe_ratio; /* Q8 */
|
|
int nb_lfe;
|
|
int nb_uncoupled;
|
|
int nb_coupled;
|
|
int nb_normal;
|
|
opus_int32 channel_offset;
|
|
opus_int32 bitrate;
|
|
int total;
|
|
|
|
nb_lfe = (st->lfe_stream!=-1);
|
|
nb_coupled = st->layout.nb_coupled_streams;
|
|
nb_uncoupled = st->layout.nb_streams-nb_coupled-nb_lfe;
|
|
nb_normal = 2*nb_coupled + nb_uncoupled;
|
|
|
|
/* Give each non-LFE channel enough bits per channel for coding band energy. */
|
|
channel_offset = 40*IMAX(50, Fs/frame_size);
|
|
|
|
if (st->bitrate_bps==OPUS_AUTO)
|
|
{
|
|
bitrate = nb_normal*(channel_offset + Fs + 10000) + 8000*nb_lfe;
|
|
} else if (st->bitrate_bps==OPUS_BITRATE_MAX)
|
|
{
|
|
bitrate = nb_normal*300000 + nb_lfe*128000;
|
|
} else {
|
|
bitrate = st->bitrate_bps;
|
|
}
|
|
|
|
/* Give LFE some basic stream_channel allocation but never exceed 1/20 of the
|
|
total rate for the non-energy part to avoid problems at really low rate. */
|
|
lfe_offset = IMIN(bitrate/20, 3000) + 15*IMAX(50, Fs/frame_size);
|
|
|
|
/* We give each stream (coupled or uncoupled) a starting bitrate.
|
|
This models the main saving of coupled channels over uncoupled. */
|
|
stream_offset = (bitrate - channel_offset*nb_normal - lfe_offset*nb_lfe)/nb_normal/2;
|
|
stream_offset = IMAX(0, IMIN(20000, stream_offset));
|
|
|
|
/* Coupled streams get twice the mono rate after the offset is allocated. */
|
|
coupled_ratio = 512;
|
|
/* Should depend on the bitrate, for now we assume LFE gets 1/8 the bits of mono */
|
|
lfe_ratio = 32;
|
|
|
|
total = (nb_uncoupled<<8) /* mono */
|
|
+ coupled_ratio*nb_coupled /* stereo */
|
|
+ nb_lfe*lfe_ratio;
|
|
channel_rate = 256*(opus_int64)(bitrate - lfe_offset*nb_lfe - stream_offset*(nb_coupled+nb_uncoupled) - channel_offset*nb_normal)/total;
|
|
|
|
for (i=0;i<st->layout.nb_streams;i++)
|
|
{
|
|
if (i<st->layout.nb_coupled_streams)
|
|
rate[i] = 2*channel_offset + IMAX(0, stream_offset+(channel_rate*coupled_ratio>>8));
|
|
else if (i!=st->lfe_stream)
|
|
rate[i] = channel_offset + IMAX(0, stream_offset + channel_rate);
|
|
else
|
|
rate[i] = IMAX(0, lfe_offset+(channel_rate*lfe_ratio>>8));
|
|
}
|
|
}
|
|
|
|
static void ambisonics_rate_allocation(
|
|
OpusMSEncoder *st,
|
|
opus_int32 *rate,
|
|
int frame_size,
|
|
opus_int32 Fs
|
|
)
|
|
{
|
|
int i;
|
|
opus_int32 total_rate;
|
|
opus_int32 per_stream_rate;
|
|
|
|
const int nb_channels = st->layout.nb_streams + st->layout.nb_coupled_streams;
|
|
|
|
if (st->bitrate_bps==OPUS_AUTO)
|
|
{
|
|
total_rate = (st->layout.nb_coupled_streams + st->layout.nb_streams) *
|
|
(Fs+60*Fs/frame_size) + st->layout.nb_streams * (opus_int32)15000;
|
|
} else if (st->bitrate_bps==OPUS_BITRATE_MAX)
|
|
{
|
|
total_rate = nb_channels * 320000;
|
|
} else
|
|
{
|
|
total_rate = st->bitrate_bps;
|
|
}
|
|
|
|
/* Allocate equal number of bits to Ambisonic (uncoupled) and non-diegetic
|
|
* (coupled) streams */
|
|
per_stream_rate = total_rate / st->layout.nb_streams;
|
|
for (i = 0; i < st->layout.nb_streams; i++)
|
|
{
|
|
rate[i] = per_stream_rate;
|
|
}
|
|
}
|
|
|
|
static opus_int32 rate_allocation(
|
|
OpusMSEncoder *st,
|
|
opus_int32 *rate,
|
|
int frame_size
|
|
)
|
|
{
|
|
int i;
|
|
opus_int32 rate_sum=0;
|
|
opus_int32 Fs;
|
|
char *ptr;
|
|
|
|
ptr = (char*)st + align(sizeof(OpusMSEncoder));
|
|
opus_encoder_ctl((OpusEncoder*)ptr, OPUS_GET_SAMPLE_RATE(&Fs));
|
|
|
|
if (st->mapping_type == MAPPING_TYPE_AMBISONICS) {
|
|
ambisonics_rate_allocation(st, rate, frame_size, Fs);
|
|
} else
|
|
{
|
|
surround_rate_allocation(st, rate, frame_size, Fs);
|
|
}
|
|
|
|
for (i=0;i<st->layout.nb_streams;i++)
|
|
{
|
|
rate[i] = IMAX(rate[i], 500);
|
|
rate_sum += rate[i];
|
|
}
|
|
return rate_sum;
|
|
}
|
|
|
|
/* Max size in case the encoder decides to return six frames (6 x 20 ms = 120 ms) */
|
|
#define MS_FRAME_TMP (6*1275+12)
|
|
int opus_multistream_encode_native
|
|
(
|
|
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
|
|
)
|
|
{
|
|
opus_int32 Fs;
|
|
int coupled_size;
|
|
int mono_size;
|
|
int s;
|
|
char *ptr;
|
|
int tot_size;
|
|
VARDECL(opus_val16, buf);
|
|
VARDECL(opus_val16, bandSMR);
|
|
unsigned char tmp_data[MS_FRAME_TMP];
|
|
OpusRepacketizer rp;
|
|
opus_int32 vbr;
|
|
const CELTMode *celt_mode;
|
|
opus_int32 bitrates[256];
|
|
opus_val16 bandLogE[42];
|
|
opus_val32 *mem = NULL;
|
|
opus_val32 *preemph_mem=NULL;
|
|
int frame_size;
|
|
opus_int32 rate_sum;
|
|
opus_int32 smallest_packet;
|
|
ALLOC_STACK;
|
|
|
|
if (st->mapping_type == MAPPING_TYPE_SURROUND)
|
|
{
|
|
preemph_mem = ms_get_preemph_mem(st);
|
|
mem = ms_get_window_mem(st);
|
|
}
|
|
|
|
ptr = (char*)st + align(sizeof(OpusMSEncoder));
|
|
opus_encoder_ctl((OpusEncoder*)ptr, OPUS_GET_SAMPLE_RATE(&Fs));
|
|
opus_encoder_ctl((OpusEncoder*)ptr, OPUS_GET_VBR(&vbr));
|
|
opus_encoder_ctl((OpusEncoder*)ptr, CELT_GET_MODE(&celt_mode));
|
|
|
|
frame_size = frame_size_select(analysis_frame_size, st->variable_duration, Fs);
|
|
if (frame_size <= 0)
|
|
{
|
|
RESTORE_STACK;
|
|
return OPUS_BAD_ARG;
|
|
}
|
|
|
|
/* Smallest packet the encoder can produce. */
|
|
smallest_packet = st->layout.nb_streams*2-1;
|
|
/* 100 ms needs an extra byte per stream for the ToC. */
|
|
if (Fs/frame_size == 10)
|
|
smallest_packet += st->layout.nb_streams;
|
|
if (max_data_bytes < smallest_packet)
|
|
{
|
|
RESTORE_STACK;
|
|
return OPUS_BUFFER_TOO_SMALL;
|
|
}
|
|
ALLOC(buf, 2*frame_size, opus_val16);
|
|
coupled_size = opus_encoder_get_size(2);
|
|
mono_size = opus_encoder_get_size(1);
|
|
|
|
ALLOC(bandSMR, 21*st->layout.nb_channels, opus_val16);
|
|
if (st->mapping_type == MAPPING_TYPE_SURROUND)
|
|
{
|
|
surround_analysis(celt_mode, pcm, bandSMR, mem, preemph_mem, frame_size, 120, st->layout.nb_channels, Fs, copy_channel_in, st->arch);
|
|
}
|
|
|
|
/* Compute bitrate allocation between streams (this could be a lot better) */
|
|
rate_sum = rate_allocation(st, bitrates, frame_size);
|
|
|
|
if (!vbr)
|
|
{
|
|
if (st->bitrate_bps == OPUS_AUTO)
|
|
{
|
|
max_data_bytes = IMIN(max_data_bytes, 3*rate_sum/(3*8*Fs/frame_size));
|
|
} else if (st->bitrate_bps != OPUS_BITRATE_MAX)
|
|
{
|
|
max_data_bytes = IMIN(max_data_bytes, IMAX(smallest_packet,
|
|
3*st->bitrate_bps/(3*8*Fs/frame_size)));
|
|
}
|
|
}
|
|
ptr = (char*)st + align(sizeof(OpusMSEncoder));
|
|
for (s=0;s<st->layout.nb_streams;s++)
|
|
{
|
|
OpusEncoder *enc;
|
|
enc = (OpusEncoder*)ptr;
|
|
if (s < st->layout.nb_coupled_streams)
|
|
ptr += align(coupled_size);
|
|
else
|
|
ptr += align(mono_size);
|
|
opus_encoder_ctl(enc, OPUS_SET_BITRATE(bitrates[s]));
|
|
if (st->mapping_type == MAPPING_TYPE_SURROUND)
|
|
{
|
|
opus_int32 equiv_rate;
|
|
equiv_rate = st->bitrate_bps;
|
|
if (frame_size*50 < Fs)
|
|
equiv_rate -= 60*(Fs/frame_size - 50)*st->layout.nb_channels;
|
|
if (equiv_rate > 10000*st->layout.nb_channels)
|
|
opus_encoder_ctl(enc, OPUS_SET_BANDWIDTH(OPUS_BANDWIDTH_FULLBAND));
|
|
else if (equiv_rate > 7000*st->layout.nb_channels)
|
|
opus_encoder_ctl(enc, OPUS_SET_BANDWIDTH(OPUS_BANDWIDTH_SUPERWIDEBAND));
|
|
else if (equiv_rate > 5000*st->layout.nb_channels)
|
|
opus_encoder_ctl(enc, OPUS_SET_BANDWIDTH(OPUS_BANDWIDTH_WIDEBAND));
|
|
else
|
|
opus_encoder_ctl(enc, OPUS_SET_BANDWIDTH(OPUS_BANDWIDTH_NARROWBAND));
|
|
if (s < st->layout.nb_coupled_streams)
|
|
{
|
|
/* To preserve the spatial image, force stereo CELT on coupled streams */
|
|
opus_encoder_ctl(enc, OPUS_SET_FORCE_MODE(MODE_CELT_ONLY));
|
|
opus_encoder_ctl(enc, OPUS_SET_FORCE_CHANNELS(2));
|
|
}
|
|
}
|
|
else if (st->mapping_type == MAPPING_TYPE_AMBISONICS) {
|
|
opus_encoder_ctl(enc, OPUS_SET_FORCE_MODE(MODE_CELT_ONLY));
|
|
}
|
|
}
|
|
|
|
ptr = (char*)st + align(sizeof(OpusMSEncoder));
|
|
/* Counting ToC */
|
|
tot_size = 0;
|
|
for (s=0;s<st->layout.nb_streams;s++)
|
|
{
|
|
OpusEncoder *enc;
|
|
int len;
|
|
int curr_max;
|
|
int c1, c2;
|
|
int ret;
|
|
|
|
opus_repacketizer_init(&rp);
|
|
enc = (OpusEncoder*)ptr;
|
|
if (s < st->layout.nb_coupled_streams)
|
|
{
|
|
int i;
|
|
int left, right;
|
|
left = get_left_channel(&st->layout, s, -1);
|
|
right = get_right_channel(&st->layout, s, -1);
|
|
(*copy_channel_in)(buf, 2,
|
|
pcm, st->layout.nb_channels, left, frame_size, user_data);
|
|
(*copy_channel_in)(buf+1, 2,
|
|
pcm, st->layout.nb_channels, right, frame_size, user_data);
|
|
ptr += align(coupled_size);
|
|
if (st->mapping_type == MAPPING_TYPE_SURROUND)
|
|
{
|
|
for (i=0;i<21;i++)
|
|
{
|
|
bandLogE[i] = bandSMR[21*left+i];
|
|
bandLogE[21+i] = bandSMR[21*right+i];
|
|
}
|
|
}
|
|
c1 = left;
|
|
c2 = right;
|
|
} else {
|
|
int i;
|
|
int chan = get_mono_channel(&st->layout, s, -1);
|
|
(*copy_channel_in)(buf, 1,
|
|
pcm, st->layout.nb_channels, chan, frame_size, user_data);
|
|
ptr += align(mono_size);
|
|
if (st->mapping_type == MAPPING_TYPE_SURROUND)
|
|
{
|
|
for (i=0;i<21;i++)
|
|
bandLogE[i] = bandSMR[21*chan+i];
|
|
}
|
|
c1 = chan;
|
|
c2 = -1;
|
|
}
|
|
if (st->mapping_type == MAPPING_TYPE_SURROUND)
|
|
opus_encoder_ctl(enc, OPUS_SET_ENERGY_MASK(bandLogE));
|
|
/* number of bytes left (+Toc) */
|
|
curr_max = max_data_bytes - tot_size;
|
|
/* Reserve one byte for the last stream and two for the others */
|
|
curr_max -= IMAX(0,2*(st->layout.nb_streams-s-1)-1);
|
|
/* For 100 ms, reserve an extra byte per stream for the ToC */
|
|
if (Fs/frame_size == 10)
|
|
curr_max -= st->layout.nb_streams-s-1;
|
|
curr_max = IMIN(curr_max,MS_FRAME_TMP);
|
|
/* Repacketizer will add one or two bytes for self-delimited frames */
|
|
if (s != st->layout.nb_streams-1) curr_max -= curr_max>253 ? 2 : 1;
|
|
if (!vbr && s == st->layout.nb_streams-1)
|
|
opus_encoder_ctl(enc, OPUS_SET_BITRATE(curr_max*(8*Fs/frame_size)));
|
|
len = opus_encode_native(enc, buf, frame_size, tmp_data, curr_max, lsb_depth,
|
|
pcm, analysis_frame_size, c1, c2, st->layout.nb_channels, downmix, float_api);
|
|
if (len<0)
|
|
{
|
|
RESTORE_STACK;
|
|
return len;
|
|
}
|
|
/* We need to use the repacketizer to add the self-delimiting lengths
|
|
while taking into account the fact that the encoder can now return
|
|
more than one frame at a time (e.g. 60 ms CELT-only) */
|
|
ret = opus_repacketizer_cat(&rp, tmp_data, len);
|
|
/* If the opus_repacketizer_cat() fails, then something's seriously wrong
|
|
with the encoder. */
|
|
if (ret != OPUS_OK)
|
|
{
|
|
RESTORE_STACK;
|
|
return OPUS_INTERNAL_ERROR;
|
|
}
|
|
len = opus_repacketizer_out_range_impl(&rp, 0, opus_repacketizer_get_nb_frames(&rp),
|
|
data, max_data_bytes-tot_size, s != st->layout.nb_streams-1, !vbr && s == st->layout.nb_streams-1);
|
|
data += len;
|
|
tot_size += len;
|
|
}
|
|
/*printf("\n");*/
|
|
RESTORE_STACK;
|
|
return tot_size;
|
|
}
|
|
|
|
#if !defined(DISABLE_FLOAT_API)
|
|
static void opus_copy_channel_in_float(
|
|
opus_val16 *dst,
|
|
int dst_stride,
|
|
const void *src,
|
|
int src_stride,
|
|
int src_channel,
|
|
int frame_size,
|
|
void *user_data
|
|
)
|
|
{
|
|
const float *float_src;
|
|
opus_int32 i;
|
|
(void)user_data;
|
|
float_src = (const float *)src;
|
|
for (i=0;i<frame_size;i++)
|
|
#if defined(FIXED_POINT)
|
|
dst[i*dst_stride] = FLOAT2INT16(float_src[i*src_stride+src_channel]);
|
|
#else
|
|
dst[i*dst_stride] = float_src[i*src_stride+src_channel];
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
static void opus_copy_channel_in_short(
|
|
opus_val16 *dst,
|
|
int dst_stride,
|
|
const void *src,
|
|
int src_stride,
|
|
int src_channel,
|
|
int frame_size,
|
|
void *user_data
|
|
)
|
|
{
|
|
const opus_int16 *short_src;
|
|
opus_int32 i;
|
|
(void)user_data;
|
|
short_src = (const opus_int16 *)src;
|
|
for (i=0;i<frame_size;i++)
|
|
#if defined(FIXED_POINT)
|
|
dst[i*dst_stride] = short_src[i*src_stride+src_channel];
|
|
#else
|
|
dst[i*dst_stride] = (1/32768.f)*short_src[i*src_stride+src_channel];
|
|
#endif
|
|
}
|
|
|
|
|
|
#ifdef FIXED_POINT
|
|
int opus_multistream_encode(
|
|
OpusMSEncoder *st,
|
|
const opus_val16 *pcm,
|
|
int frame_size,
|
|
unsigned char *data,
|
|
opus_int32 max_data_bytes
|
|
)
|
|
{
|
|
return opus_multistream_encode_native(st, opus_copy_channel_in_short,
|
|
pcm, frame_size, data, max_data_bytes, 16, downmix_int, 0, NULL);
|
|
}
|
|
|
|
#ifndef DISABLE_FLOAT_API
|
|
int opus_multistream_encode_float(
|
|
OpusMSEncoder *st,
|
|
const float *pcm,
|
|
int frame_size,
|
|
unsigned char *data,
|
|
opus_int32 max_data_bytes
|
|
)
|
|
{
|
|
return opus_multistream_encode_native(st, opus_copy_channel_in_float,
|
|
pcm, frame_size, data, max_data_bytes, 16, downmix_float, 1, NULL);
|
|
}
|
|
#endif
|
|
|
|
#else
|
|
|
|
int opus_multistream_encode_float
|
|
(
|
|
OpusMSEncoder *st,
|
|
const opus_val16 *pcm,
|
|
int frame_size,
|
|
unsigned char *data,
|
|
opus_int32 max_data_bytes
|
|
)
|
|
{
|
|
return opus_multistream_encode_native(st, opus_copy_channel_in_float,
|
|
pcm, frame_size, data, max_data_bytes, 24, downmix_float, 1, NULL);
|
|
}
|
|
|
|
int opus_multistream_encode(
|
|
OpusMSEncoder *st,
|
|
const opus_int16 *pcm,
|
|
int frame_size,
|
|
unsigned char *data,
|
|
opus_int32 max_data_bytes
|
|
)
|
|
{
|
|
return opus_multistream_encode_native(st, opus_copy_channel_in_short,
|
|
pcm, frame_size, data, max_data_bytes, 16, downmix_int, 0, NULL);
|
|
}
|
|
#endif
|
|
|
|
int opus_multistream_encoder_ctl_va_list(OpusMSEncoder *st, int request,
|
|
va_list ap)
|
|
{
|
|
int coupled_size, mono_size;
|
|
char *ptr;
|
|
int ret = OPUS_OK;
|
|
|
|
coupled_size = opus_encoder_get_size(2);
|
|
mono_size = opus_encoder_get_size(1);
|
|
ptr = (char*)st + align(sizeof(OpusMSEncoder));
|
|
switch (request)
|
|
{
|
|
case OPUS_SET_BITRATE_REQUEST:
|
|
{
|
|
opus_int32 value = va_arg(ap, opus_int32);
|
|
if (value != OPUS_AUTO && value != OPUS_BITRATE_MAX)
|
|
{
|
|
if (value <= 0)
|
|
goto bad_arg;
|
|
value = IMIN(300000*st->layout.nb_channels, IMAX(500*st->layout.nb_channels, value));
|
|
}
|
|
st->bitrate_bps = value;
|
|
}
|
|
break;
|
|
case OPUS_GET_BITRATE_REQUEST:
|
|
{
|
|
int s;
|
|
opus_int32 *value = va_arg(ap, opus_int32*);
|
|
if (!value)
|
|
{
|
|
goto bad_arg;
|
|
}
|
|
*value = 0;
|
|
for (s=0;s<st->layout.nb_streams;s++)
|
|
{
|
|
opus_int32 rate;
|
|
OpusEncoder *enc;
|
|
enc = (OpusEncoder*)ptr;
|
|
if (s < st->layout.nb_coupled_streams)
|
|
ptr += align(coupled_size);
|
|
else
|
|
ptr += align(mono_size);
|
|
opus_encoder_ctl(enc, request, &rate);
|
|
*value += rate;
|
|
}
|
|
}
|
|
break;
|
|
case OPUS_GET_LSB_DEPTH_REQUEST:
|
|
case OPUS_GET_VBR_REQUEST:
|
|
case OPUS_GET_APPLICATION_REQUEST:
|
|
case OPUS_GET_BANDWIDTH_REQUEST:
|
|
case OPUS_GET_COMPLEXITY_REQUEST:
|
|
case OPUS_GET_PACKET_LOSS_PERC_REQUEST:
|
|
case OPUS_GET_DTX_REQUEST:
|
|
case OPUS_GET_VOICE_RATIO_REQUEST:
|
|
case OPUS_GET_VBR_CONSTRAINT_REQUEST:
|
|
case OPUS_GET_SIGNAL_REQUEST:
|
|
case OPUS_GET_LOOKAHEAD_REQUEST:
|
|
case OPUS_GET_SAMPLE_RATE_REQUEST:
|
|
case OPUS_GET_INBAND_FEC_REQUEST:
|
|
case OPUS_GET_FORCE_CHANNELS_REQUEST:
|
|
case OPUS_GET_PREDICTION_DISABLED_REQUEST:
|
|
case OPUS_GET_PHASE_INVERSION_DISABLED_REQUEST:
|
|
{
|
|
OpusEncoder *enc;
|
|
/* For int32* GET params, just query the first stream */
|
|
opus_int32 *value = va_arg(ap, opus_int32*);
|
|
enc = (OpusEncoder*)ptr;
|
|
ret = opus_encoder_ctl(enc, request, value);
|
|
}
|
|
break;
|
|
case OPUS_GET_FINAL_RANGE_REQUEST:
|
|
{
|
|
int s;
|
|
opus_uint32 *value = va_arg(ap, opus_uint32*);
|
|
opus_uint32 tmp;
|
|
if (!value)
|
|
{
|
|
goto bad_arg;
|
|
}
|
|
*value=0;
|
|
for (s=0;s<st->layout.nb_streams;s++)
|
|
{
|
|
OpusEncoder *enc;
|
|
enc = (OpusEncoder*)ptr;
|
|
if (s < st->layout.nb_coupled_streams)
|
|
ptr += align(coupled_size);
|
|
else
|
|
ptr += align(mono_size);
|
|
ret = opus_encoder_ctl(enc, request, &tmp);
|
|
if (ret != OPUS_OK) break;
|
|
*value ^= tmp;
|
|
}
|
|
}
|
|
break;
|
|
case OPUS_SET_LSB_DEPTH_REQUEST:
|
|
case OPUS_SET_COMPLEXITY_REQUEST:
|
|
case OPUS_SET_VBR_REQUEST:
|
|
case OPUS_SET_VBR_CONSTRAINT_REQUEST:
|
|
case OPUS_SET_MAX_BANDWIDTH_REQUEST:
|
|
case OPUS_SET_BANDWIDTH_REQUEST:
|
|
case OPUS_SET_SIGNAL_REQUEST:
|
|
case OPUS_SET_APPLICATION_REQUEST:
|
|
case OPUS_SET_INBAND_FEC_REQUEST:
|
|
case OPUS_SET_PACKET_LOSS_PERC_REQUEST:
|
|
case OPUS_SET_DTX_REQUEST:
|
|
case OPUS_SET_FORCE_MODE_REQUEST:
|
|
case OPUS_SET_FORCE_CHANNELS_REQUEST:
|
|
case OPUS_SET_PREDICTION_DISABLED_REQUEST:
|
|
case OPUS_SET_PHASE_INVERSION_DISABLED_REQUEST:
|
|
{
|
|
int s;
|
|
/* This works for int32 params */
|
|
opus_int32 value = va_arg(ap, opus_int32);
|
|
for (s=0;s<st->layout.nb_streams;s++)
|
|
{
|
|
OpusEncoder *enc;
|
|
|
|
enc = (OpusEncoder*)ptr;
|
|
if (s < st->layout.nb_coupled_streams)
|
|
ptr += align(coupled_size);
|
|
else
|
|
ptr += align(mono_size);
|
|
ret = opus_encoder_ctl(enc, request, value);
|
|
if (ret != OPUS_OK)
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
case OPUS_MULTISTREAM_GET_ENCODER_STATE_REQUEST:
|
|
{
|
|
int s;
|
|
opus_int32 stream_id;
|
|
OpusEncoder **value;
|
|
stream_id = va_arg(ap, opus_int32);
|
|
if (stream_id<0 || stream_id >= st->layout.nb_streams)
|
|
goto bad_arg;
|
|
value = va_arg(ap, OpusEncoder**);
|
|
if (!value)
|
|
{
|
|
goto bad_arg;
|
|
}
|
|
for (s=0;s<stream_id;s++)
|
|
{
|
|
if (s < st->layout.nb_coupled_streams)
|
|
ptr += align(coupled_size);
|
|
else
|
|
ptr += align(mono_size);
|
|
}
|
|
*value = (OpusEncoder*)ptr;
|
|
}
|
|
break;
|
|
case OPUS_SET_EXPERT_FRAME_DURATION_REQUEST:
|
|
{
|
|
opus_int32 value = va_arg(ap, opus_int32);
|
|
st->variable_duration = value;
|
|
}
|
|
break;
|
|
case OPUS_GET_EXPERT_FRAME_DURATION_REQUEST:
|
|
{
|
|
opus_int32 *value = va_arg(ap, opus_int32*);
|
|
if (!value)
|
|
{
|
|
goto bad_arg;
|
|
}
|
|
*value = st->variable_duration;
|
|
}
|
|
break;
|
|
case OPUS_RESET_STATE:
|
|
{
|
|
int s;
|
|
if (st->mapping_type == MAPPING_TYPE_SURROUND)
|
|
{
|
|
OPUS_CLEAR(ms_get_preemph_mem(st), st->layout.nb_channels);
|
|
OPUS_CLEAR(ms_get_window_mem(st), st->layout.nb_channels*120);
|
|
}
|
|
for (s=0;s<st->layout.nb_streams;s++)
|
|
{
|
|
OpusEncoder *enc;
|
|
enc = (OpusEncoder*)ptr;
|
|
if (s < st->layout.nb_coupled_streams)
|
|
ptr += align(coupled_size);
|
|
else
|
|
ptr += align(mono_size);
|
|
ret = opus_encoder_ctl(enc, OPUS_RESET_STATE);
|
|
if (ret != OPUS_OK)
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
ret = OPUS_UNIMPLEMENTED;
|
|
break;
|
|
}
|
|
return ret;
|
|
bad_arg:
|
|
return OPUS_BAD_ARG;
|
|
}
|
|
|
|
int opus_multistream_encoder_ctl(OpusMSEncoder *st, int request, ...)
|
|
{
|
|
int ret;
|
|
va_list ap;
|
|
va_start(ap, request);
|
|
ret = opus_multistream_encoder_ctl_va_list(st, request, ap);
|
|
va_end(ap);
|
|
return ret;
|
|
}
|
|
|
|
void opus_multistream_encoder_destroy(OpusMSEncoder *st)
|
|
{
|
|
opus_free(st);
|
|
}
|