1 /*****************************************************************************
2 * aac.c: FDK-AAC Encoder plugin for vlc.
3 *****************************************************************************
4 * Copyright (C) 2012 Sergio Ammirata
6 * Authors: Sergio Ammirata <sergio@ammirata.net>
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 * Alternatively you can redistribute this file under the terms of the
23 * BSD license as stated below:
25 * Redistribution and use in source and binary forms, with or without
26 * modification, are permitted provided that the following conditions
28 * 1. Redistributions of source code must retain the above copyright
29 * notice, this list of conditions and the following disclaimer.
30 * 2. Redistributions in binary form must reproduce the above copyright
31 * notice, this list of conditions and the following disclaimer in
32 * the documentation and/or other materials provided with the
35 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
36 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
37 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
38 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
39 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
41 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
42 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
43 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
44 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
45 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
47 *****************************************************************************/
49 /*****************************************************************************
51 *****************************************************************************/
56 #include <fdk-aac/aacenc_lib.h>
58 #include <vlc_common.h>
59 #include <vlc_plugin.h>
60 #include <vlc_codec.h>
62 static int OpenEncoder( vlc_object_t * );
63 static void CloseEncoder( vlc_object_t * );
65 #define ENC_CFG_PREFIX "sout-fdkaac-"
67 #define AOT_TEXT N_("Encoder Profile")
68 #define AOT_LONGTEXT N_( "Encoder Algorithm to use" )
70 #define SIDEBAND_TEXT N_("Enable spectral band replication")
71 #define SIDEBAND_LONGTEXT N_( "This is an optional feature only for the AAC-ELD profile" )
73 #define VBR_QUALITY_TEXT N_("VBR Quality")
74 #define VBR_QUALITY_LONGTEXT N_( "Quality of the VBR Encoding (0=cbr, 1-5 constant quality vbr, 5 is best" )
76 #define AFTERBURNER_TEXT N_("Enable afterburner library")
77 #define AFTERBURNER_LONGTEXT N_( "This library will produce higher quality audio at the expense of additional CPU usage (default is enabled)" )
79 #define SIGNALING_TEXT N_("Signaling mode of the extension AOT")
80 #define SIGNALING_LONGTEXT N_( "1 is explicit for SBR and implicit for PS (default), 2 is explicit hierarchical" )
82 #define CH_ORDER_MPEG 0 /*!< MPEG channel ordering (e. g. 5.1: C, L, R, SL, SR, LFE) */
83 #define CH_ORDER_WAV 1 /*!< WAV fileformat channel ordering (e. g. 5.1: L, R, C, LFE, SL, SR) */
84 #define CH_ORDER_WG4 2 /*!< WG4 fileformat channel ordering (e. g. 5.1: L, R, SL, SR, C, LFE) */
86 #define PROFILE_AAC_LC 2
87 #define PROFILE_AAC_HE 5
88 #define PROFILE_AAC_HE_v2 29
89 #define PROFILE_AAC_LD 23
90 #define PROFILE_AAC_ELD 39
92 #define SIGNALING_COMPATIBLE 1
93 #define SIGNALING_HIERARCHICAL 2
95 static const int pi_aot_values[] = { PROFILE_AAC_LC, PROFILE_AAC_HE, PROFILE_AAC_HE_v2, PROFILE_AAC_LD, PROFILE_AAC_ELD };
96 static const char *const ppsz_aot_descriptions[] =
97 { N_("AAC-LC"), N_("HE-AAC"), N_("HE-AAC-v2"), N_("AAC-LD"), N_("AAC-ELD") };
100 set_shortname( N_("FDKAAC") )
101 set_description( N_("FDK-AAC Audio encoder") )
102 set_capability( "encoder", 150 )
103 set_callbacks( OpenEncoder, CloseEncoder )
104 add_shortcut( "fdkaac" )
105 set_category( CAT_INPUT )
106 set_subcategory( SUBCAT_INPUT_ACODEC )
107 add_integer( ENC_CFG_PREFIX "profile", PROFILE_AAC_LC, AOT_TEXT,
108 AOT_LONGTEXT, false )
109 change_integer_list( pi_aot_values, ppsz_aot_descriptions );
110 add_bool( ENC_CFG_PREFIX "sbr", false, SIDEBAND_TEXT,
111 SIDEBAND_LONGTEXT, false )
112 add_integer( ENC_CFG_PREFIX "vbr", 0, VBR_QUALITY_TEXT,
113 VBR_QUALITY_LONGTEXT, false )
114 change_integer_range (0, 5)
115 add_bool( ENC_CFG_PREFIX "afterburner", true, AFTERBURNER_TEXT,
116 AFTERBURNER_LONGTEXT, true )
117 add_integer( ENC_CFG_PREFIX "signaling", SIGNALING_COMPATIBLE, SIGNALING_TEXT,
118 SIGNALING_LONGTEXT, true )
119 change_integer_range (0, 2)
122 /*****************************************************************************
124 *****************************************************************************/
125 static block_t *EncodeAudio( encoder_t *p_enc, block_t *p_buf );
127 static const char *const ppsz_enc_options[] = {
128 "profile", "sbr", "vbr", "afterburner", "signaling", NULL
131 /*****************************************************************************
132 * encoder_sys_t : aac encoder descriptor
133 *****************************************************************************/
136 double d_compression_ratio;
138 int i_aot; /* This stores the aac profile chosen */
139 int i_vbr; /* cbr or vbr-quality value chosen */
140 int i_signaling; /* Library feature for backwards compatibility */
141 int i_encoderdelay; /* Samples delay introduced by the profile */
143 int i_maxoutputsize; /* Maximum buffer size for encoded output */
144 HANDLE_AACENCODER handle;
145 bool b_afterburner; /* Library feature for additional quality */
146 bool b_eld_sbr; /* Spectral band replication option for ELD profile */
149 static const char *aac_get_errorstring(AACENC_ERROR erraac)
154 case AACENC_INVALID_HANDLE:
155 return "Invalid handle";
156 case AACENC_MEMORY_ERROR:
157 return "Memory allocation error";
158 case AACENC_UNSUPPORTED_PARAMETER:
159 return "Unsupported parameter";
160 case AACENC_INVALID_CONFIG:
161 return "Invalid config";
162 case AACENC_INIT_ERROR:
163 return "Initialization error";
164 case AACENC_INIT_AAC_ERROR:
165 return "AAC library initialization error";
166 case AACENC_INIT_SBR_ERROR:
167 return "SBR library initialization error";
168 case AACENC_INIT_TP_ERROR:
169 return "Transport library initialization error";
170 case AACENC_INIT_META_ERROR:
171 return "Metadata library initialization error";
172 case AACENC_ENCODE_ERROR:
173 return "Encoding error";
174 case AACENC_ENCODE_EOF:
175 return "End of file";
177 return "Unknown error";
181 /*****************************************************************************
182 * OpenDecoder: open the encoder.
183 *****************************************************************************/
184 static int OpenEncoder( vlc_object_t *p_this )
186 encoder_t *p_enc = (encoder_t *)p_this;
188 if( p_enc->fmt_out.i_codec != VLC_FOURCC( 'l', 'a', 'a', 'c' ) &&
189 p_enc->fmt_out.i_codec != VLC_FOURCC( 'h', 'a', 'a', 'c' ) &&
190 p_enc->fmt_out.i_codec != VLC_FOURCC( 's', 'a', 'a', 'c' ) &&
191 p_enc->fmt_out.i_codec != VLC_CODEC_MP4A )
196 uint16_t channel_config;
199 switch (p_enc->fmt_in.audio.i_channels) {
200 case 1: mode = MODE_1; sce = 1; cpe = 0;
201 channel_config = AOUT_CHAN_CENTER; break;
202 case 2: mode = MODE_2; sce = 0; cpe = 1;
203 channel_config = AOUT_CHANS_STEREO; break;
204 case 3: mode = MODE_1_2; sce = 1; cpe = 1;
205 channel_config = AOUT_CHANS_3_0; break;
206 case 4: mode = MODE_1_2_1; sce = 2; cpe = 1;
207 channel_config = AOUT_CHANS_4_CENTER_REAR; break;
208 case 5: mode = MODE_1_2_2; sce = 1; cpe = 2;
209 channel_config = AOUT_CHANS_5_0; break;
210 case 6: mode = MODE_1_2_2_1; sce = 2; cpe = 2;
211 channel_config = AOUT_CHANS_5_1; break;
212 case 8: mode = MODE_1_2_2_2_1; sce = 2; cpe = 3;
213 channel_config = AOUT_CHANS_7_1; break;
215 msg_Err( p_enc, "we do not support > 8 input channels, this input has %i",
216 p_enc->fmt_in.audio.i_channels );
220 p_enc->fmt_in.audio.i_physical_channels = channel_config;
222 msg_Info(p_enc, "Initializing AAC Encoder, %i channels", p_enc->fmt_in.audio.i_channels);
224 /* Allocate the memory needed to store the encoder's structure */
225 encoder_sys_t *p_sys = (encoder_sys_t *)malloc(sizeof(encoder_sys_t));
226 if( unlikely( !p_sys ) )
228 p_enc->p_sys = p_sys;
229 p_enc->fmt_in.i_codec = VLC_CODEC_S16N;
230 p_enc->fmt_out.i_cat = AUDIO_ES;
231 p_enc->fmt_out.i_codec = VLC_CODEC_MP4A;
233 config_ChainParse( p_enc, ENC_CFG_PREFIX, ppsz_enc_options, p_enc->p_cfg );
235 if ( p_enc->fmt_out.i_codec == VLC_FOURCC( 'l', 'a', 'a', 'c' ) )
236 p_sys->i_aot = PROFILE_AAC_LC;
237 else if ( p_enc->fmt_out.i_codec == VLC_FOURCC( 'h', 'a', 'a', 'c' ) )
238 p_sys->i_aot = PROFILE_AAC_HE;
239 else if ( p_enc->fmt_out.i_codec == VLC_FOURCC( 's', 'a', 'a', 'c' ) )
240 p_sys->i_aot = PROFILE_AAC_HE_v2;
242 p_sys->i_aot = var_InheritInteger( p_enc, ENC_CFG_PREFIX "profile" );
244 p_sys->b_eld_sbr = var_InheritBool( p_enc, ENC_CFG_PREFIX "sbr" );
245 p_sys->i_vbr = var_InheritInteger( p_enc, ENC_CFG_PREFIX "vbr" );
246 p_sys->b_afterburner = var_InheritBool( p_enc, ENC_CFG_PREFIX "afterburner" );
247 p_sys->i_signaling = var_InheritInteger( p_enc, ENC_CFG_PREFIX "signaling" );
248 p_sys->i_pts_last = 0;
250 if ((p_sys->i_aot == PROFILE_AAC_HE || p_sys->i_aot == PROFILE_AAC_HE_v2) && p_sys->i_vbr > 3)
252 msg_Warn(p_enc, "Maximum VBR quality for this profile is 3, setting vbr=3");
256 if ((erraac = aacEncOpen(&p_sys->handle, 0, p_enc->fmt_in.audio.i_channels)) != AACENC_OK) {
257 msg_Err(p_enc, "Unable to open encoder: %s", aac_get_errorstring(erraac));
261 if ( p_sys->i_aot == PROFILE_AAC_HE_v2 && p_enc->fmt_in.audio.i_channels != 2 )
263 msg_Err(p_enc, "The HE-AAC-v2 profile can only be used with stereo sources");
266 if ( p_sys->i_aot == PROFILE_AAC_ELD && p_enc->fmt_in.audio.i_channels != 2 )
268 msg_Err(p_enc, "The ELD-AAC profile can only be used with stereo sources");
271 if ((erraac = aacEncoder_SetParam(p_sys->handle, AACENC_AOT, p_sys->i_aot)) != AACENC_OK) {
272 msg_Err(p_enc, "Unable to set the Profile %i: %s", p_sys->i_aot, aac_get_errorstring(erraac));
275 if (p_sys->i_aot == PROFILE_AAC_ELD && p_sys->b_eld_sbr) {
276 if ((erraac = aacEncoder_SetParam(p_sys->handle, AACENC_SBR_MODE, 1)) != AACENC_OK) {
277 msg_Err(p_enc, "Unable to set SBR mode for ELD: %s", aac_get_errorstring(erraac));
281 if ((erraac = aacEncoder_SetParam(p_sys->handle, AACENC_SAMPLERATE,
282 p_enc->fmt_out.audio.i_rate)) != AACENC_OK) {
283 msg_Err(p_enc, "Unable to set the sample rate %i: %s",p_enc->fmt_out.audio.i_rate,
284 aac_get_errorstring(erraac));
287 if ((erraac = aacEncoder_SetParam(p_sys->handle, AACENC_CHANNELMODE, mode)) != AACENC_OK) {
288 msg_Err(p_enc, "Unable to set the channel mode: %s", aac_get_errorstring(erraac));
291 if ((erraac = aacEncoder_SetParam(p_sys->handle, AACENC_CHANNELORDER, CH_ORDER_WG4)) != AACENC_OK) {
292 msg_Err(p_enc, "Unable to set the sound channel order: %s", aac_get_errorstring(erraac));
295 if (p_sys->i_vbr != 0) {
296 if ((erraac = aacEncoder_SetParam(p_sys->handle,
297 AACENC_BITRATEMODE, p_sys->i_vbr)) != AACENC_OK) {
298 msg_Err(p_enc, "Unable to set the VBR bitrate mode: %s", aac_get_errorstring(erraac));
303 if (p_enc->fmt_out.i_bitrate == 0) {
304 if (p_sys->i_aot == PROFILE_AAC_HE_v2) {
308 i_bitrate = (96*sce + 128*cpe) * p_enc->fmt_out.audio.i_rate / 44;
309 if (p_sys->i_aot == PROFILE_AAC_HE ||
310 p_sys->i_aot == PROFILE_AAC_HE_v2 ||
313 p_enc->fmt_out.i_bitrate = i_bitrate;
314 msg_Info(p_enc, "Setting optimal bitrate of %i", i_bitrate);
318 i_bitrate = p_enc->fmt_out.i_bitrate;
320 if ((erraac = aacEncoder_SetParam(p_sys->handle, AACENC_BITRATE,
321 i_bitrate)) != AACENC_OK) {
322 msg_Err(p_enc, "Unable to set the bitrate %i: %s", i_bitrate,
323 aac_get_errorstring(erraac));
327 if ((erraac = aacEncoder_SetParam(p_sys->handle, AACENC_TRANSMUX, 0)) != AACENC_OK) {
328 msg_Err(p_enc, "Unable to set the ADTS transmux: %s", aac_get_errorstring(erraac));
331 if ((erraac = aacEncoder_SetParam(p_sys->handle, AACENC_SIGNALING_MODE,
332 (int)p_sys->i_signaling)) != AACENC_OK) {
333 /* use explicit backward compatible =1 */
334 /* use explicit hierarchical signaling =2 */
335 msg_Err(p_enc, "Unable to set signaling mode: %s", aac_get_errorstring(erraac));
338 if ((erraac = aacEncoder_SetParam(p_sys->handle, AACENC_AFTERBURNER,
339 (int)p_sys->b_afterburner)) != AACENC_OK) {
340 msg_Err(p_enc, "Unable to set the afterburner mode: %s", aac_get_errorstring(erraac));
343 if ((erraac = aacEncEncode(p_sys->handle, NULL, NULL, NULL, NULL)) != AACENC_OK) {
344 msg_Err(p_enc, "Unable to initialize the encoder: %s", aac_get_errorstring(erraac));
347 AACENC_InfoStruct info = { 0 };
348 if ((erraac = aacEncInfo(p_sys->handle, &info)) != AACENC_OK) {
349 msg_Err(p_enc, "Unable to get the encoder info: %s", aac_get_errorstring(erraac));
353 /* The maximum packet size is 6144 bits aka 768 bytes per channel. */
354 p_sys->i_maxoutputsize = 768*p_enc->fmt_in.audio.i_channels;
355 p_enc->fmt_in.audio.i_bitspersample = 16;
356 p_sys->i_frame_size = info.frameLength;
357 p_sys->i_encoderdelay = info.encoderDelay;
359 p_enc->fmt_out.i_extra = info.confSize;
360 if( p_enc->fmt_out.i_extra )
362 p_enc->fmt_out.p_extra = malloc( p_enc->fmt_out.i_extra );
363 if ( p_enc->fmt_out.p_extra == NULL )
365 msg_Err(p_enc, "Unable to allocate fmt_out.p_extra");
368 memcpy( p_enc->fmt_out.p_extra, info.confBuf,
369 p_enc->fmt_out.i_extra );
372 p_enc->pf_encode_audio = EncodeAudio;
375 // TODO: Add more debug info to this config printout
376 msg_Dbg(p_enc, "fmt_out.p_extra = %i", p_enc->fmt_out.i_extra);
382 aacEncClose(&p_sys->handle);
387 /****************************************************************************
388 * EncodeAudio: the whole thing
389 ****************************************************************************/
390 static block_t *EncodeAudio( encoder_t *p_enc, block_t *p_aout_buf )
396 encoder_sys_t *p_sys = p_enc->p_sys;
398 if ( likely( p_aout_buf ) )
400 p_buffer = (int16_t *)p_aout_buf->p_buffer;
401 i_samples = p_aout_buf->i_nb_samples;
402 i_pts_out = p_aout_buf->i_pts - (mtime_t)((double)CLOCK_FREQ *
403 (double)p_sys->i_encoderdelay /
404 (double)p_enc->fmt_out.audio.i_rate);
405 if (p_sys->i_pts_last == 0)
406 p_sys->i_pts_last = i_pts_out - (mtime_t)((double)CLOCK_FREQ *
407 (double)(p_sys->i_frame_size) /
408 (double)p_enc->fmt_out.audio.i_rate);
413 i_pts_out = p_sys->i_pts_last;
416 int i_samples_left = i_samples;
417 int i_loop_count = 0;
419 block_t *p_chain = NULL;
420 while ( i_samples_left >= 0 )
422 AACENC_BufDesc in_buf = { 0 }, out_buf = { 0 };
423 AACENC_InArgs in_args = { 0 };
424 AACENC_OutArgs out_args = { 0 };
425 int in_identifier = IN_AUDIO_DATA;
426 int in_size, in_elem_size;
427 int out_identifier = OUT_BITSTREAM_DATA;
428 int out_size, out_elem_size;
429 void *in_ptr, *out_ptr;
431 if ( unlikely(i_samples == 0) ) {
432 // this forces the encoder to purge whatever is left in the internal buffer
433 in_args.numInSamples = -1;
435 in_ptr = p_buffer + (i_samples - i_samples_left)*p_enc->fmt_in.audio.i_channels;
436 in_size = 2*p_enc->fmt_in.audio.i_channels*i_samples_left;
438 in_args.numInSamples = p_enc->fmt_in.audio.i_channels*i_samples_left;
440 in_buf.bufs = &in_ptr;
441 in_buf.bufferIdentifiers = &in_identifier;
442 in_buf.bufSizes = &in_size;
443 in_buf.bufElSizes = &in_elem_size;
446 p_block = block_Alloc( p_sys->i_maxoutputsize );
447 p_block->i_buffer = p_sys->i_maxoutputsize;
448 out_ptr = p_block->p_buffer;
449 out_size = p_block->i_buffer;
452 out_buf.bufs = &out_ptr;
453 out_buf.bufferIdentifiers = &out_identifier;
454 out_buf.bufSizes = &out_size;
455 out_buf.bufElSizes = &out_elem_size;
458 if ((erraac = aacEncEncode(p_sys->handle, &in_buf, &out_buf, &in_args, &out_args)) != AACENC_OK) {
459 if (erraac == AACENC_ENCODE_EOF) {
460 msg_Info( p_enc, "Encoding final bytes (EOF)");
464 msg_Err( p_enc, "Encoding failed: %s", aac_get_errorstring(erraac));
465 block_Release(p_block);
469 if ( out_args.numOutBytes > 0 )
471 p_block->i_buffer = out_args.numOutBytes;
472 if ( unlikely(i_samples == 0) )
474 // I only have the numOutBytes so approximate based on compression factor
475 double d_samples_forward = p_sys->d_compression_ratio*(double)out_args.numOutBytes;
476 i_pts_out += (mtime_t)d_samples_forward;
477 p_block->i_length = (mtime_t)d_samples_forward;
478 // TODO: It would be more precise (a few microseconds) to use d_samples_forward =
479 // (mtime_t)CLOCK_FREQ * (mtime_t)p_sys->i_frame_size/(mtime_t)p_enc->fmt_out.audio.i_rate
480 // but I am not sure if the lib always outputs a full frame when
481 // emptying the internal buffer in the EOF scenario
485 if ( i_loop_count == 0 )
487 // There can be an implicit delay in the first loop cycle because leftover bytes
488 // in the library buffer from the prior block
489 double d_samples_delay = (double)p_sys->i_frame_size - (double)out_args.numInSamples /
490 (double)p_enc->fmt_in.audio.i_channels;
491 i_pts_out -= (mtime_t)((double)CLOCK_FREQ * d_samples_delay /
492 (double)p_enc->fmt_out.audio.i_rate);
493 p_block->i_length = (mtime_t)((double)CLOCK_FREQ * (double)p_sys->i_frame_size /
494 (double)p_enc->fmt_out.audio.i_rate);
495 p_block->i_nb_samples = d_samples_delay;
496 //p_block->i_length = i_pts_out - p_sys->i_pts_last;
500 double d_samples_forward = (double)out_args.numInSamples/(double)p_enc->fmt_in.audio.i_channels;
501 double d_length = ((double)CLOCK_FREQ * d_samples_forward /
502 (double)p_enc->fmt_out.audio.i_rate);
503 i_pts_out += (mtime_t) d_length;
504 p_block->i_length = (mtime_t) d_length;
505 p_block->i_nb_samples = d_samples_forward;
508 p_block->i_dts = p_block->i_pts = i_pts_out;
509 block_ChainAppend( &p_chain, p_block );
511 msg_Dbg( p_enc, "dts %"PRId64", length %"PRId64", " "pts_last "
512 "%"PRId64" numOutBytes = %i, numInSamples = %i, "
513 "i_samples %i, i_loop_count %i",
514 p_block->i_dts, p_block->i_length,
515 p_sys->i_pts_last, out_args.numOutBytes,
516 out_args.numInSamples, i_samples, i_loop_count);
518 if ( likely(i_samples > 0) )
520 p_sys->d_compression_ratio = (double)p_block->i_length / (double)out_args.numOutBytes;
521 i_samples_left -= out_args.numInSamples/p_enc->fmt_in.audio.i_channels;
522 p_sys->i_pts_last = i_pts_out;
527 block_Release(p_block);
528 //msg_Dbg( p_enc, "aac_encode_audio: not enough data yet");
531 if ( unlikely(i_loop_count++ > 100) )
533 msg_Err( p_enc, "Loop count greater than 100!!!, something must be wrong with the encoder library");
542 /*****************************************************************************
543 * CloseDecoder: decoder destruction
544 *****************************************************************************/
545 static void CloseEncoder( vlc_object_t *p_this )
547 encoder_t *p_enc = (encoder_t *)p_this;
548 encoder_sys_t *p_sys = p_enc->p_sys;
550 aacEncClose(&p_sys->handle);