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/* |
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* Nellymoser encoder |
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* This code is developed as part of Google Summer of Code 2008 Program. |
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* |
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* Copyright (c) 2008 Bartlomiej Wolowiec |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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/** |
25 |
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* @file |
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* Nellymoser encoder |
27 |
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* by Bartlomiej Wolowiec |
28 |
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* |
29 |
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* Generic codec information: libavcodec/nellymoserdec.c |
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* |
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* Some information also from: http://samples.mplayerhq.hu/A-codecs/Nelly_Moser/ASAO/ASAO.zip |
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* (Copyright Joseph Artsimovich and UAB "DKD") |
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* |
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* for more information about nellymoser format, visit: |
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* http://wiki.multimedia.cx/index.php?title=Nellymoser |
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*/ |
37 |
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#include "libavutil/common.h" |
39 |
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#include "libavutil/float_dsp.h" |
40 |
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#include "libavutil/mathematics.h" |
41 |
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42 |
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#include "audio_frame_queue.h" |
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#include "avcodec.h" |
44 |
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#include "fft.h" |
45 |
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#include "internal.h" |
46 |
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#include "nellymoser.h" |
47 |
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#include "sinewin.h" |
48 |
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49 |
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#define BITSTREAM_WRITER_LE |
50 |
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#include "put_bits.h" |
51 |
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52 |
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#define POW_TABLE_SIZE (1<<11) |
53 |
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#define POW_TABLE_OFFSET 3 |
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#define OPT_SIZE ((1<<15) + 3000) |
55 |
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56 |
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typedef struct NellyMoserEncodeContext { |
57 |
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AVCodecContext *avctx; |
58 |
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int last_frame; |
59 |
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AVFloatDSPContext *fdsp; |
60 |
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FFTContext mdct_ctx; |
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AudioFrameQueue afq; |
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DECLARE_ALIGNED(32, float, mdct_out)[NELLY_SAMPLES]; |
63 |
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DECLARE_ALIGNED(32, float, in_buff)[NELLY_SAMPLES]; |
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DECLARE_ALIGNED(32, float, buf)[3 * NELLY_BUF_LEN]; ///< sample buffer |
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float (*opt )[OPT_SIZE]; |
66 |
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uint8_t (*path)[OPT_SIZE]; |
67 |
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} NellyMoserEncodeContext; |
68 |
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69 |
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static float pow_table[POW_TABLE_SIZE]; ///< pow(2, -i / 2048.0 - 3.0); |
70 |
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71 |
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static const uint8_t sf_lut[96] = { |
72 |
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0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 4, 4, |
73 |
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5, 5, 5, 6, 7, 7, 8, 8, 9, 10, 11, 11, 12, 13, 13, 14, |
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15, 15, 16, 17, 17, 18, 19, 19, 20, 21, 22, 22, 23, 24, 25, 26, |
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27, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 37, 38, 39, 40, |
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41, 41, 42, 43, 44, 45, 45, 46, 47, 48, 49, 50, 51, 52, 52, 53, |
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54, 55, 55, 56, 57, 57, 58, 59, 59, 60, 60, 60, 61, 61, 61, 62, |
78 |
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}; |
79 |
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80 |
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static const uint8_t sf_delta_lut[78] = { |
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0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 4, 4, |
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4, 5, 5, 5, 6, 6, 7, 7, 8, 8, 9, 10, 10, 11, 11, 12, |
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13, 13, 14, 15, 16, 17, 17, 18, 19, 19, 20, 21, 21, 22, 22, 23, |
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23, 24, 24, 25, 25, 25, 26, 26, 26, 26, 27, 27, 27, 27, 27, 28, |
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28, 28, 28, 28, 28, 29, 29, 29, 29, 29, 29, 29, 29, 30, |
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}; |
87 |
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88 |
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static const uint8_t quant_lut[230] = { |
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0, |
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91 |
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0, 1, 2, |
92 |
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0, 1, 2, 3, 4, 5, 6, |
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0, 1, 1, 2, 2, 3, 3, 4, 5, 6, 7, 8, 9, 10, 11, 11, |
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12, 13, 13, 13, 14, |
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98 |
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0, 1, 1, 2, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 8, |
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8, 9, 10, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, |
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22, 23, 23, 24, 24, 25, 25, 26, 26, 27, 27, 28, 28, 29, 29, 29, |
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30, |
102 |
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103 |
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0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 3, |
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4, 4, 4, 5, 5, 5, 6, 6, 7, 7, 7, 8, 8, 9, 9, 9, |
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10, 10, 11, 11, 11, 12, 12, 13, 13, 13, 13, 14, 14, 14, 15, 15, |
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15, 15, 16, 16, 16, 17, 17, 17, 18, 18, 18, 19, 19, 20, 20, 20, |
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21, 21, 22, 22, 23, 23, 24, 25, 26, 26, 27, 28, 29, 30, 31, 32, |
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33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 42, 43, 44, 44, 45, 45, |
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46, 47, 47, 48, 48, 49, 49, 50, 50, 50, 51, 51, 51, 52, 52, 52, |
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53, 53, 53, 54, 54, 54, 55, 55, 55, 56, 56, 56, 57, 57, 57, 57, |
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58, 58, 58, 58, 59, 59, 59, 59, 60, 60, 60, 60, 60, 61, 61, 61, |
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61, 61, 61, 61, 62, |
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}; |
114 |
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static const float quant_lut_mul[7] = { 0.0, 0.0, 2.0, 2.0, 5.0, 12.0, 36.6 }; |
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static const float quant_lut_add[7] = { 0.0, 0.0, 2.0, 7.0, 21.0, 56.0, 157.0 }; |
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static const uint8_t quant_lut_offset[8] = { 0, 0, 1, 4, 11, 32, 81, 230 }; |
118 |
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119 |
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static void apply_mdct(NellyMoserEncodeContext *s) |
120 |
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{ |
121 |
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float *in0 = s->buf; |
122 |
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float *in1 = s->buf + NELLY_BUF_LEN; |
123 |
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float *in2 = s->buf + 2 * NELLY_BUF_LEN; |
124 |
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125 |
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s->fdsp->vector_fmul (s->in_buff, in0, ff_sine_128, NELLY_BUF_LEN); |
126 |
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s->fdsp->vector_fmul_reverse(s->in_buff + NELLY_BUF_LEN, in1, ff_sine_128, NELLY_BUF_LEN); |
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s->mdct_ctx.mdct_calc(&s->mdct_ctx, s->mdct_out, s->in_buff); |
128 |
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129 |
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s->fdsp->vector_fmul (s->in_buff, in1, ff_sine_128, NELLY_BUF_LEN); |
130 |
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s->fdsp->vector_fmul_reverse(s->in_buff + NELLY_BUF_LEN, in2, ff_sine_128, NELLY_BUF_LEN); |
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s->mdct_ctx.mdct_calc(&s->mdct_ctx, s->mdct_out + NELLY_BUF_LEN, s->in_buff); |
132 |
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} |
133 |
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134 |
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1 |
static av_cold int encode_end(AVCodecContext *avctx) |
135 |
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{ |
136 |
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NellyMoserEncodeContext *s = avctx->priv_data; |
137 |
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138 |
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1 |
ff_mdct_end(&s->mdct_ctx); |
139 |
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140 |
✗✓ |
1 |
if (s->avctx->trellis) { |
141 |
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av_freep(&s->opt); |
142 |
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av_freep(&s->path); |
143 |
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} |
144 |
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ff_af_queue_close(&s->afq); |
145 |
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av_freep(&s->fdsp); |
146 |
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147 |
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1 |
return 0; |
148 |
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} |
149 |
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150 |
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1 |
static av_cold int encode_init(AVCodecContext *avctx) |
151 |
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{ |
152 |
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NellyMoserEncodeContext *s = avctx->priv_data; |
153 |
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int i, ret; |
154 |
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155 |
✗✓ |
1 |
if (avctx->channels != 1) { |
156 |
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av_log(avctx, AV_LOG_ERROR, "Nellymoser supports only 1 channel\n"); |
157 |
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return AVERROR(EINVAL); |
158 |
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} |
159 |
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160 |
✓✗✗✓
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1 |
if (avctx->sample_rate != 8000 && avctx->sample_rate != 16000 && |
161 |
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avctx->sample_rate != 11025 && |
162 |
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avctx->sample_rate != 22050 && avctx->sample_rate != 44100 && |
163 |
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avctx->strict_std_compliance >= FF_COMPLIANCE_NORMAL) { |
164 |
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av_log(avctx, AV_LOG_ERROR, "Nellymoser works only with 8000, 16000, 11025, 22050 and 44100 sample rate\n"); |
165 |
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return AVERROR(EINVAL); |
166 |
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} |
167 |
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168 |
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1 |
avctx->frame_size = NELLY_SAMPLES; |
169 |
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1 |
avctx->initial_padding = NELLY_BUF_LEN; |
170 |
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1 |
ff_af_queue_init(avctx, &s->afq); |
171 |
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1 |
s->avctx = avctx; |
172 |
✗✓ |
1 |
if ((ret = ff_mdct_init(&s->mdct_ctx, 8, 0, 32768.0)) < 0) |
173 |
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goto error; |
174 |
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1 |
s->fdsp = avpriv_float_dsp_alloc(avctx->flags & AV_CODEC_FLAG_BITEXACT); |
175 |
✗✓ |
1 |
if (!s->fdsp) { |
176 |
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ret = AVERROR(ENOMEM); |
177 |
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goto error; |
178 |
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} |
179 |
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180 |
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/* Generate overlap window */ |
181 |
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1 |
ff_init_ff_sine_windows(7); |
182 |
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/* faster way of doing |
183 |
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for (i = 0; i < POW_TABLE_SIZE; i++) |
184 |
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pow_table[i] = 2^(-i / 2048.0 - 3.0 + POW_TABLE_OFFSET); */ |
185 |
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1 |
pow_table[0] = 1; |
186 |
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1 |
pow_table[1024] = M_SQRT1_2; |
187 |
✓✓ |
513 |
for (i = 1; i < 513; i++) { |
188 |
|
512 |
double tmp = exp2(-i / 2048.0); |
189 |
|
512 |
pow_table[i] = tmp; |
190 |
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512 |
pow_table[1024-i] = M_SQRT1_2 / tmp; |
191 |
|
512 |
pow_table[1024+i] = tmp * M_SQRT1_2; |
192 |
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512 |
pow_table[2048-i] = 0.5 / tmp; |
193 |
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} |
194 |
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195 |
✗✓ |
1 |
if (s->avctx->trellis) { |
196 |
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s->opt = av_malloc(NELLY_BANDS * OPT_SIZE * sizeof(float )); |
197 |
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s->path = av_malloc(NELLY_BANDS * OPT_SIZE * sizeof(uint8_t)); |
198 |
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if (!s->opt || !s->path) { |
199 |
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ret = AVERROR(ENOMEM); |
200 |
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goto error; |
201 |
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} |
202 |
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} |
203 |
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204 |
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1 |
return 0; |
205 |
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error: |
206 |
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encode_end(avctx); |
207 |
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return ret; |
208 |
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} |
209 |
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210 |
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#define find_best(val, table, LUT, LUT_add, LUT_size) \ |
211 |
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best_idx = \ |
212 |
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LUT[av_clip ((lrintf(val) >> 8) + LUT_add, 0, LUT_size - 1)]; \ |
213 |
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if (fabs(val - table[best_idx]) > fabs(val - table[best_idx + 1])) \ |
214 |
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best_idx++; |
215 |
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216 |
|
376 |
static void get_exponent_greedy(NellyMoserEncodeContext *s, float *cand, int *idx_table) |
217 |
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{ |
218 |
|
376 |
int band, best_idx, power_idx = 0; |
219 |
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float power_candidate; |
220 |
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221 |
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//base exponent |
222 |
✓✓ |
376 |
find_best(cand[0], ff_nelly_init_table, sf_lut, -20, 96); |
223 |
|
376 |
idx_table[0] = best_idx; |
224 |
|
376 |
power_idx = ff_nelly_init_table[best_idx]; |
225 |
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|
226 |
✓✓ |
8648 |
for (band = 1; band < NELLY_BANDS; band++) { |
227 |
|
8272 |
power_candidate = cand[band] - power_idx; |
228 |
✓✓ |
8272 |
find_best(power_candidate, ff_nelly_delta_table, sf_delta_lut, 37, 78); |
229 |
|
8272 |
idx_table[band] = best_idx; |
230 |
|
8272 |
power_idx += ff_nelly_delta_table[best_idx]; |
231 |
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} |
232 |
|
376 |
} |
233 |
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234 |
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static inline float distance(float x, float y, int band) |
235 |
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{ |
236 |
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//return pow(fabs(x-y), 2.0); |
237 |
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float tmp = x - y; |
238 |
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return tmp * tmp; |
239 |
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} |
240 |
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241 |
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static void get_exponent_dynamic(NellyMoserEncodeContext *s, float *cand, int *idx_table) |
242 |
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{ |
243 |
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int i, j, band, best_idx; |
244 |
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float power_candidate, best_val; |
245 |
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246 |
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float (*opt )[OPT_SIZE] = s->opt ; |
247 |
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uint8_t(*path)[OPT_SIZE] = s->path; |
248 |
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|
249 |
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for (i = 0; i < NELLY_BANDS * OPT_SIZE; i++) { |
250 |
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opt[0][i] = INFINITY; |
251 |
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} |
252 |
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253 |
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for (i = 0; i < 64; i++) { |
254 |
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opt[0][ff_nelly_init_table[i]] = distance(cand[0], ff_nelly_init_table[i], 0); |
255 |
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path[0][ff_nelly_init_table[i]] = i; |
256 |
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} |
257 |
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|
258 |
|
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for (band = 1; band < NELLY_BANDS; band++) { |
259 |
|
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int q, c = 0; |
260 |
|
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float tmp; |
261 |
|
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int idx_min, idx_max, idx; |
262 |
|
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power_candidate = cand[band]; |
263 |
|
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for (q = 1000; !c && q < OPT_SIZE; q <<= 2) { |
264 |
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idx_min = FFMAX(0, cand[band] - q); |
265 |
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idx_max = FFMIN(OPT_SIZE, cand[band - 1] + q); |
266 |
|
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for (i = FFMAX(0, cand[band - 1] - q); i < FFMIN(OPT_SIZE, cand[band - 1] + q); i++) { |
267 |
|
|
if ( isinf(opt[band - 1][i]) ) |
268 |
|
|
continue; |
269 |
|
|
for (j = 0; j < 32; j++) { |
270 |
|
|
idx = i + ff_nelly_delta_table[j]; |
271 |
|
|
if (idx > idx_max) |
272 |
|
|
break; |
273 |
|
|
if (idx >= idx_min) { |
274 |
|
|
tmp = opt[band - 1][i] + distance(idx, power_candidate, band); |
275 |
|
|
if (opt[band][idx] > tmp) { |
276 |
|
|
opt[band][idx] = tmp; |
277 |
|
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path[band][idx] = j; |
278 |
|
|
c = 1; |
279 |
|
|
} |
280 |
|
|
} |
281 |
|
|
} |
282 |
|
|
} |
283 |
|
|
} |
284 |
|
|
av_assert1(c); //FIXME |
285 |
|
|
} |
286 |
|
|
|
287 |
|
|
best_val = INFINITY; |
288 |
|
|
best_idx = -1; |
289 |
|
|
band = NELLY_BANDS - 1; |
290 |
|
|
for (i = 0; i < OPT_SIZE; i++) { |
291 |
|
|
if (best_val > opt[band][i]) { |
292 |
|
|
best_val = opt[band][i]; |
293 |
|
|
best_idx = i; |
294 |
|
|
} |
295 |
|
|
} |
296 |
|
|
for (band = NELLY_BANDS - 1; band >= 0; band--) { |
297 |
|
|
idx_table[band] = path[band][best_idx]; |
298 |
|
|
if (band) { |
299 |
|
|
best_idx -= ff_nelly_delta_table[path[band][best_idx]]; |
300 |
|
|
} |
301 |
|
|
} |
302 |
|
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} |
303 |
|
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|
304 |
|
|
/** |
305 |
|
|
* Encode NELLY_SAMPLES samples. It assumes, that samples contains 3 * NELLY_BUF_LEN values |
306 |
|
|
* @param s encoder context |
307 |
|
|
* @param output output buffer |
308 |
|
|
* @param output_size size of output buffer |
309 |
|
|
*/ |
310 |
|
376 |
static void encode_block(NellyMoserEncodeContext *s, unsigned char *output, int output_size) |
311 |
|
|
{ |
312 |
|
|
PutBitContext pb; |
313 |
|
376 |
int i, j, band, block, best_idx, power_idx = 0; |
314 |
|
|
float power_val, coeff, coeff_sum; |
315 |
|
|
float pows[NELLY_FILL_LEN]; |
316 |
|
|
int bits[NELLY_BUF_LEN], idx_table[NELLY_BANDS]; |
317 |
|
|
float cand[NELLY_BANDS]; |
318 |
|
|
|
319 |
|
376 |
apply_mdct(s); |
320 |
|
|
|
321 |
|
376 |
init_put_bits(&pb, output, output_size); |
322 |
|
|
|
323 |
|
376 |
i = 0; |
324 |
✓✓ |
9024 |
for (band = 0; band < NELLY_BANDS; band++) { |
325 |
|
8648 |
coeff_sum = 0; |
326 |
✓✓ |
55272 |
for (j = 0; j < ff_nelly_band_sizes_table[band]; i++, j++) { |
327 |
|
46624 |
coeff_sum += s->mdct_out[i ] * s->mdct_out[i ] |
328 |
|
46624 |
+ s->mdct_out[i + NELLY_BUF_LEN] * s->mdct_out[i + NELLY_BUF_LEN]; |
329 |
|
|
} |
330 |
|
8648 |
cand[band] = |
331 |
✓✓ |
8648 |
log2(FFMAX(1.0, coeff_sum / (ff_nelly_band_sizes_table[band] << 7))) * 1024.0; |
332 |
|
|
} |
333 |
|
|
|
334 |
✗✓ |
376 |
if (s->avctx->trellis) { |
335 |
|
|
get_exponent_dynamic(s, cand, idx_table); |
336 |
|
|
} else { |
337 |
|
376 |
get_exponent_greedy(s, cand, idx_table); |
338 |
|
|
} |
339 |
|
|
|
340 |
|
376 |
i = 0; |
341 |
✓✓ |
9024 |
for (band = 0; band < NELLY_BANDS; band++) { |
342 |
✓✓ |
8648 |
if (band) { |
343 |
|
8272 |
power_idx += ff_nelly_delta_table[idx_table[band]]; |
344 |
|
8272 |
put_bits(&pb, 5, idx_table[band]); |
345 |
|
|
} else { |
346 |
|
376 |
power_idx = ff_nelly_init_table[idx_table[0]]; |
347 |
|
376 |
put_bits(&pb, 6, idx_table[0]); |
348 |
|
|
} |
349 |
|
8648 |
power_val = pow_table[power_idx & 0x7FF] / (1 << ((power_idx >> 11) + POW_TABLE_OFFSET)); |
350 |
✓✓ |
55272 |
for (j = 0; j < ff_nelly_band_sizes_table[band]; i++, j++) { |
351 |
|
46624 |
s->mdct_out[i] *= power_val; |
352 |
|
46624 |
s->mdct_out[i + NELLY_BUF_LEN] *= power_val; |
353 |
|
46624 |
pows[i] = power_idx; |
354 |
|
|
} |
355 |
|
|
} |
356 |
|
|
|
357 |
|
376 |
ff_nelly_get_sample_bits(pows, bits); |
358 |
|
|
|
359 |
✓✓ |
1128 |
for (block = 0; block < 2; block++) { |
360 |
✓✓ |
94000 |
for (i = 0; i < NELLY_FILL_LEN; i++) { |
361 |
✓✓ |
93248 |
if (bits[i] > 0) { |
362 |
|
76548 |
const float *table = ff_nelly_dequantization_table + (1 << bits[i]) - 1; |
363 |
|
76548 |
coeff = s->mdct_out[block * NELLY_BUF_LEN + i]; |
364 |
|
76548 |
best_idx = |
365 |
|
76548 |
quant_lut[av_clip ( |
366 |
|
76548 |
coeff * quant_lut_mul[bits[i]] + quant_lut_add[bits[i]], |
367 |
|
76548 |
quant_lut_offset[bits[i]], |
368 |
|
76548 |
quant_lut_offset[bits[i]+1] - 1 |
369 |
|
|
)]; |
370 |
✓✓ |
76548 |
if (fabs(coeff - table[best_idx]) > fabs(coeff - table[best_idx + 1])) |
371 |
|
52418 |
best_idx++; |
372 |
|
|
|
373 |
|
76548 |
put_bits(&pb, bits[i], best_idx); |
374 |
|
|
} |
375 |
|
|
} |
376 |
✓✓ |
752 |
if (!block) |
377 |
|
376 |
put_bits(&pb, NELLY_HEADER_BITS + NELLY_DETAIL_BITS - put_bits_count(&pb), 0); |
378 |
|
|
} |
379 |
|
|
|
380 |
|
376 |
flush_put_bits(&pb); |
381 |
|
376 |
memset(put_bits_ptr(&pb), 0, output + output_size - put_bits_ptr(&pb)); |
382 |
|
376 |
} |
383 |
|
|
|
384 |
|
377 |
static int encode_frame(AVCodecContext *avctx, AVPacket *avpkt, |
385 |
|
|
const AVFrame *frame, int *got_packet_ptr) |
386 |
|
|
{ |
387 |
|
377 |
NellyMoserEncodeContext *s = avctx->priv_data; |
388 |
|
|
int ret; |
389 |
|
|
|
390 |
✓✓ |
377 |
if (s->last_frame) |
391 |
|
1 |
return 0; |
392 |
|
|
|
393 |
|
376 |
memcpy(s->buf, s->buf + NELLY_SAMPLES, NELLY_BUF_LEN * sizeof(*s->buf)); |
394 |
✓✓ |
376 |
if (frame) { |
395 |
|
375 |
memcpy(s->buf + NELLY_BUF_LEN, frame->data[0], |
396 |
|
375 |
frame->nb_samples * sizeof(*s->buf)); |
397 |
✗✓ |
375 |
if (frame->nb_samples < NELLY_SAMPLES) { |
398 |
|
|
memset(s->buf + NELLY_BUF_LEN + frame->nb_samples, 0, |
399 |
|
|
(NELLY_SAMPLES - frame->nb_samples) * sizeof(*s->buf)); |
400 |
|
|
if (frame->nb_samples >= NELLY_BUF_LEN) |
401 |
|
|
s->last_frame = 1; |
402 |
|
|
} |
403 |
✗✓ |
375 |
if ((ret = ff_af_queue_add(&s->afq, frame)) < 0) |
404 |
|
|
return ret; |
405 |
|
|
} else { |
406 |
|
1 |
memset(s->buf + NELLY_BUF_LEN, 0, NELLY_SAMPLES * sizeof(*s->buf)); |
407 |
|
1 |
s->last_frame = 1; |
408 |
|
|
} |
409 |
|
|
|
410 |
✗✓ |
376 |
if ((ret = ff_alloc_packet2(avctx, avpkt, NELLY_BLOCK_LEN, 0)) < 0) |
411 |
|
|
return ret; |
412 |
|
376 |
encode_block(s, avpkt->data, avpkt->size); |
413 |
|
|
|
414 |
|
|
/* Get the next frame pts/duration */ |
415 |
|
376 |
ff_af_queue_remove(&s->afq, avctx->frame_size, &avpkt->pts, |
416 |
|
|
&avpkt->duration); |
417 |
|
|
|
418 |
|
376 |
*got_packet_ptr = 1; |
419 |
|
376 |
return 0; |
420 |
|
|
} |
421 |
|
|
|
422 |
|
|
AVCodec ff_nellymoser_encoder = { |
423 |
|
|
.name = "nellymoser", |
424 |
|
|
.long_name = NULL_IF_CONFIG_SMALL("Nellymoser Asao"), |
425 |
|
|
.type = AVMEDIA_TYPE_AUDIO, |
426 |
|
|
.id = AV_CODEC_ID_NELLYMOSER, |
427 |
|
|
.priv_data_size = sizeof(NellyMoserEncodeContext), |
428 |
|
|
.init = encode_init, |
429 |
|
|
.encode2 = encode_frame, |
430 |
|
|
.close = encode_end, |
431 |
|
|
.capabilities = AV_CODEC_CAP_SMALL_LAST_FRAME | AV_CODEC_CAP_DELAY, |
432 |
|
|
.sample_fmts = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_FLT, |
433 |
|
|
AV_SAMPLE_FMT_NONE }, |
434 |
|
|
}; |