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
)
187 encoder_sys_t
*p_sys
;
190 bool b_profile_selected
;
196 p_enc
= (encoder_t
*)p_this
;
197 b_profile_selected
= false;
201 if( p_enc
->fmt_out
.i_codec
!= VLC_FOURCC( 'l', 'a', 'a', 'c' ) &&
202 p_enc
->fmt_out
.i_codec
!= VLC_FOURCC( 'h', 'a', 'a', 'c' ) &&
203 p_enc
->fmt_out
.i_codec
!= VLC_FOURCC( 's', 'a', 'a', 'c' ) &&
204 p_enc
->fmt_out
.i_codec
!= VLC_CODEC_MP4A
)
208 else if ( p_enc
->fmt_out
.i_codec
== VLC_FOURCC( 'l', 'a', 'a', 'c' ) )
210 b_profile_selected
= true;
211 i_profile
= PROFILE_AAC_LC
;
213 else if ( p_enc
->fmt_out
.i_codec
== VLC_FOURCC( 'h', 'a', 'a', 'c' ) )
215 b_profile_selected
= true;
216 i_profile
= PROFILE_AAC_HE
;
218 else if ( p_enc
->fmt_out
.i_codec
== VLC_FOURCC( 's', 'a', 'a', 'c' ) )
220 b_profile_selected
= true;
221 i_profile
= PROFILE_AAC_HE_v2
;
224 uint16_t channel_config
;
225 switch (p_enc
->fmt_in
.audio
.i_channels
) {
226 case 1: mode
= MODE_1
; sce
= 1; cpe
= 0;
227 channel_config
= AOUT_CHAN_CENTER
; break;
228 case 2: mode
= MODE_2
; sce
= 0; cpe
= 1;
229 channel_config
= AOUT_CHANS_STEREO
; break;
230 case 3: mode
= MODE_1_2
; sce
= 1; cpe
= 1;
231 channel_config
= AOUT_CHANS_3_0
; break;
232 case 4: mode
= MODE_1_2_1
; sce
= 2; cpe
= 1;
233 channel_config
= AOUT_CHANS_4_CENTER_REAR
; break;
234 case 5: mode
= MODE_1_2_2
; sce
= 1; cpe
= 2;
235 channel_config
= AOUT_CHANS_5_0
; break;
236 case 6: mode
= MODE_1_2_2_1
; sce
= 2; cpe
= 2;
237 channel_config
= AOUT_CHANS_5_1
; break;
238 case 8: mode
= MODE_1_2_2_2_1
; sce
= 2; cpe
= 3;
239 channel_config
= AOUT_CHANS_7_1
; break;
241 msg_Err( p_enc
, "we do not support > 8 input channels, this input has %i",
242 p_enc
->fmt_in
.audio
.i_channels
);
246 p_enc
->fmt_in
.audio
.i_physical_channels
= channel_config
;
248 msg_Info(p_enc
, "Initializing AAC Encoder, %i channels", p_enc
->fmt_in
.audio
.i_channels
);
250 /* Allocate the memory needed to store the encoder's structure */
251 p_sys
= (encoder_sys_t
*)malloc(sizeof(encoder_sys_t
));
252 if( unlikely( !p_sys
) )
254 p_enc
->p_sys
= p_sys
;
255 p_enc
->fmt_in
.i_codec
= VLC_CODEC_S16N
;
256 p_enc
->fmt_out
.i_cat
= AUDIO_ES
;
257 p_enc
->fmt_out
.i_codec
= VLC_CODEC_MP4A
;
259 config_ChainParse( p_enc
, ENC_CFG_PREFIX
, ppsz_enc_options
, p_enc
->p_cfg
);
261 if ( b_profile_selected
== false )
262 p_sys
->i_aot
= var_InheritInteger( p_enc
, ENC_CFG_PREFIX
"profile" );
264 p_sys
->i_aot
= i_profile
;
265 p_sys
->b_eld_sbr
= var_InheritBool( p_enc
, ENC_CFG_PREFIX
"sbr" );
266 p_sys
->i_vbr
= var_InheritInteger( p_enc
, ENC_CFG_PREFIX
"vbr" );
267 p_sys
->b_afterburner
= var_InheritBool( p_enc
, ENC_CFG_PREFIX
"afterburner" );
268 p_sys
->i_signaling
= var_InheritInteger( p_enc
, ENC_CFG_PREFIX
"signaling" );
269 p_sys
->i_pts_last
= 0;
271 if ((p_sys
->i_aot
== PROFILE_AAC_HE
|| p_sys
->i_aot
== PROFILE_AAC_HE_v2
) && p_sys
->i_vbr
> 3)
273 msg_Warn(p_enc
, "Maximum VBR quality for this profile is 3, setting vbr=3");
276 if ((erraac
= aacEncOpen(&p_sys
->handle
, 0, p_enc
->fmt_in
.audio
.i_channels
)) != AACENC_OK
) {
277 msg_Err(p_enc
, "Unable to open encoder: %s", aac_get_errorstring(erraac
));
281 if ( p_sys
->i_aot
== PROFILE_AAC_HE_v2
&& p_enc
->fmt_in
.audio
.i_channels
!= 2 )
283 msg_Err(p_enc
, "The HE-AAC-v2 profile can only be used with stereo sources");
286 if ( p_sys
->i_aot
== PROFILE_AAC_ELD
&& p_enc
->fmt_in
.audio
.i_channels
!= 2 )
288 msg_Err(p_enc
, "The ELD-AAC profile can only be used with stereo sources");
291 if ((erraac
= aacEncoder_SetParam(p_sys
->handle
, AACENC_AOT
, p_sys
->i_aot
)) != AACENC_OK
) {
292 msg_Err(p_enc
, "Unable to set the Profile %i: %s", p_sys
->i_aot
, aac_get_errorstring(erraac
));
295 if (p_sys
->i_aot
== PROFILE_AAC_ELD
&& p_sys
->b_eld_sbr
) {
296 if ((erraac
= aacEncoder_SetParam(p_sys
->handle
, AACENC_SBR_MODE
, 1)) != AACENC_OK
) {
297 msg_Err(p_enc
, "Unable to set SBR mode for ELD: %s", aac_get_errorstring(erraac
));
301 if ((erraac
= aacEncoder_SetParam(p_sys
->handle
, AACENC_SAMPLERATE
,
302 p_enc
->fmt_out
.audio
.i_rate
)) != AACENC_OK
) {
303 msg_Err(p_enc
, "Unable to set the sample rate %i: %s",p_enc
->fmt_out
.audio
.i_rate
,
304 aac_get_errorstring(erraac
));
307 if ((erraac
= aacEncoder_SetParam(p_sys
->handle
, AACENC_CHANNELMODE
, mode
)) != AACENC_OK
) {
308 msg_Err(p_enc
, "Unable to set the channel mode: %s", aac_get_errorstring(erraac
));
311 if ((erraac
= aacEncoder_SetParam(p_sys
->handle
, AACENC_CHANNELORDER
, CH_ORDER_WG4
)) != AACENC_OK
) {
312 msg_Err(p_enc
, "Unable to set the sound channel order: %s", aac_get_errorstring(erraac
));
315 if (p_sys
->i_vbr
!= 0) {
316 if ((erraac
= aacEncoder_SetParam(p_sys
->handle
,
317 AACENC_BITRATEMODE
, p_sys
->i_vbr
)) != AACENC_OK
) {
318 msg_Err(p_enc
, "Unable to set the VBR bitrate mode: %s", aac_get_errorstring(erraac
));
322 if (p_enc
->fmt_out
.i_bitrate
== 0) {
323 if (p_sys
->i_aot
== PROFILE_AAC_HE_v2
) {
327 i_bitrate
= (96*sce
+ 128*cpe
) * p_enc
->fmt_out
.audio
.i_rate
/ 44;
328 if (p_sys
->i_aot
== PROFILE_AAC_HE
||
329 p_sys
->i_aot
== PROFILE_AAC_HE_v2
||
332 p_enc
->fmt_out
.i_bitrate
= i_bitrate
;
333 msg_Info(p_enc
, "Setting optimal bitrate of %i", i_bitrate
);
337 i_bitrate
= p_enc
->fmt_out
.i_bitrate
;
339 if ((erraac
= aacEncoder_SetParam(p_sys
->handle
, AACENC_BITRATE
,
340 i_bitrate
)) != AACENC_OK
) {
341 msg_Err(p_enc
, "Unable to set the bitrate %i: %s", i_bitrate
,
342 aac_get_errorstring(erraac
));
346 if ((erraac
= aacEncoder_SetParam(p_sys
->handle
, AACENC_TRANSMUX
, 0)) != AACENC_OK
) {
347 msg_Err(p_enc
, "Unable to set the ADTS transmux: %s", aac_get_errorstring(erraac
));
350 if ((erraac
= aacEncoder_SetParam(p_sys
->handle
, AACENC_SIGNALING_MODE
,
351 (int)p_sys
->i_signaling
)) != AACENC_OK
) {
352 /* use explicit backward compatible =1 */
353 /* use explicit hierarchical signaling =2 */
354 msg_Err(p_enc
, "Unable to set signaling mode: %s", aac_get_errorstring(erraac
));
357 if ((erraac
= aacEncoder_SetParam(p_sys
->handle
, AACENC_AFTERBURNER
,
358 (int)p_sys
->b_afterburner
)) != AACENC_OK
) {
359 msg_Err(p_enc
, "Unable to set the afterburner mode: %s", aac_get_errorstring(erraac
));
362 if ((erraac
= aacEncEncode(p_sys
->handle
, NULL
, NULL
, NULL
, NULL
)) != AACENC_OK
) {
363 msg_Err(p_enc
, "Unable to initialize the encoder: %s", aac_get_errorstring(erraac
));
366 AACENC_InfoStruct info
= { 0 };
367 if ((erraac
= aacEncInfo(p_sys
->handle
, &info
)) != AACENC_OK
) {
368 msg_Err(p_enc
, "Unable to get the encoder info: %s", aac_get_errorstring(erraac
));
372 /* The maximum packet size is 6144 bits aka 768 bytes per channel. */
373 p_sys
->i_maxoutputsize
= 768*p_enc
->fmt_in
.audio
.i_channels
;
374 p_enc
->fmt_in
.audio
.i_bitspersample
= 16;
375 p_sys
->i_frame_size
= info
.frameLength
;
376 p_sys
->i_encoderdelay
= info
.encoderDelay
;
378 p_enc
->fmt_out
.i_extra
= info
.confSize
;
379 if( p_enc
->fmt_out
.i_extra
)
381 p_enc
->fmt_out
.p_extra
= malloc( p_enc
->fmt_out
.i_extra
);
382 if ( p_enc
->fmt_out
.p_extra
== NULL
)
384 msg_Err(p_enc
, "Unable to allocate fmt_out.p_extra");
387 memcpy( p_enc
->fmt_out
.p_extra
, info
.confBuf
,
388 p_enc
->fmt_out
.i_extra
);
391 p_enc
->pf_encode_audio
= EncodeAudio
;
394 // TODO: Add more debug info to this config printout
395 msg_Dbg(p_enc
, "fmt_out.p_extra = %i", p_enc
->fmt_out
.i_extra
);
401 aacEncClose(&p_sys
->handle
);
406 /****************************************************************************
407 * EncodeAudio: the whole thing
408 ****************************************************************************/
409 static block_t
*EncodeAudio( encoder_t
*p_enc
, block_t
*p_aout_buf
)
411 encoder_sys_t
*p_sys
;
420 p_sys
= p_enc
->p_sys
;
423 if ( likely( p_aout_buf
) )
425 p_buffer
= (int16_t *)p_aout_buf
->p_buffer
;
426 i_samples
= p_aout_buf
->i_nb_samples
;
427 i_pts_out
= p_aout_buf
->i_pts
- (mtime_t
)((double)CLOCK_FREQ
*
428 (double)p_sys
->i_encoderdelay
/
429 (double)p_enc
->fmt_out
.audio
.i_rate
);
430 if (p_sys
->i_pts_last
== 0)
431 p_sys
->i_pts_last
= i_pts_out
- (mtime_t
)((double)CLOCK_FREQ
*
432 (double)(p_sys
->i_frame_size
) /
433 (double)p_enc
->fmt_out
.audio
.i_rate
);
438 i_pts_out
= p_sys
->i_pts_last
;
441 i_samples_left
= i_samples
;
444 while ( i_samples_left
>= 0 )
446 AACENC_BufDesc in_buf
= { 0 }, out_buf
= { 0 };
447 AACENC_InArgs in_args
= { 0 };
448 AACENC_OutArgs out_args
= { 0 };
449 int in_identifier
= IN_AUDIO_DATA
;
450 int in_size
, in_elem_size
;
451 int out_identifier
= OUT_BITSTREAM_DATA
;
452 int out_size
, out_elem_size
;
453 void *in_ptr
, *out_ptr
;
455 if ( unlikely(i_samples
== 0) ) {
456 // this forces the encoder to purge whatever is left in the internal buffer
457 in_args
.numInSamples
= -1;
459 in_ptr
= p_buffer
+ (i_samples
- i_samples_left
)*p_enc
->fmt_in
.audio
.i_channels
;
460 in_size
= 2*p_enc
->fmt_in
.audio
.i_channels
*i_samples_left
;
462 in_args
.numInSamples
= p_enc
->fmt_in
.audio
.i_channels
*i_samples_left
;
464 in_buf
.bufs
= &in_ptr
;
465 in_buf
.bufferIdentifiers
= &in_identifier
;
466 in_buf
.bufSizes
= &in_size
;
467 in_buf
.bufElSizes
= &in_elem_size
;
470 p_block
= block_Alloc( p_sys
->i_maxoutputsize
);
471 p_block
->i_buffer
= p_sys
->i_maxoutputsize
;
472 out_ptr
= p_block
->p_buffer
;
473 out_size
= p_block
->i_buffer
;
476 out_buf
.bufs
= &out_ptr
;
477 out_buf
.bufferIdentifiers
= &out_identifier
;
478 out_buf
.bufSizes
= &out_size
;
479 out_buf
.bufElSizes
= &out_elem_size
;
481 if ((erraac
= aacEncEncode(p_sys
->handle
, &in_buf
, &out_buf
, &in_args
, &out_args
)) != AACENC_OK
) {
482 if (erraac
== AACENC_ENCODE_EOF
) {
483 msg_Info( p_enc
, "Encoding final bytes (EOF)");
487 msg_Err( p_enc
, "Encoding failed: %s", aac_get_errorstring(erraac
));
488 block_Release(p_block
);
492 if ( out_args
.numOutBytes
> 0 )
494 p_block
->i_buffer
= out_args
.numOutBytes
;
495 if ( unlikely(i_samples
== 0) )
497 // I only have the numOutBytes so approximate based on compression factor
498 double d_samples_forward
= p_sys
->d_compression_ratio
*(double)out_args
.numOutBytes
;
499 i_pts_out
+= (mtime_t
)d_samples_forward
;
500 p_block
->i_length
= (mtime_t
)d_samples_forward
;
501 // TODO: It would be more precise (a few microseconds) to use d_samples_forward =
502 // (mtime_t)CLOCK_FREQ * (mtime_t)p_sys->i_frame_size/(mtime_t)p_enc->fmt_out.audio.i_rate
503 // but I am not sure if the lib always outputs a full frame when
504 // emptying the internal buffer in the EOF scenario
508 if ( i_loop_count
== 0 )
510 // There can be an implicit delay in the first loop cycle because leftover bytes
511 // in the library buffer from the prior block
512 double d_samples_delay
= (double)p_sys
->i_frame_size
- (double)out_args
.numInSamples
/
513 (double)p_enc
->fmt_in
.audio
.i_channels
;
514 i_pts_out
-= (mtime_t
)((double)CLOCK_FREQ
* d_samples_delay
/
515 (double)p_enc
->fmt_out
.audio
.i_rate
);
516 p_block
->i_length
= (mtime_t
)((double)CLOCK_FREQ
* (double)p_sys
->i_frame_size
/
517 (double)p_enc
->fmt_out
.audio
.i_rate
);
518 p_block
->i_nb_samples
= d_samples_delay
;
519 //p_block->i_length = i_pts_out - p_sys->i_pts_last;
523 double d_samples_forward
= (double)out_args
.numInSamples
/(double)p_enc
->fmt_in
.audio
.i_channels
;
524 double d_length
= ((double)CLOCK_FREQ
* d_samples_forward
/
525 (double)p_enc
->fmt_out
.audio
.i_rate
);
526 i_pts_out
+= (mtime_t
) d_length
;
527 p_block
->i_length
= (mtime_t
) d_length
;
528 p_block
->i_nb_samples
= d_samples_forward
;
531 p_block
->i_dts
= p_block
->i_pts
= i_pts_out
;
532 block_ChainAppend( &p_chain
, p_block
);
534 msg_Dbg( p_enc
, "dts %"PRId64
", length %"PRId64
", " "pts_last "
535 "%"PRId64
" numOutBytes = %i, numInSamples = %i, "
536 "i_samples %i, i_loop_count %i",
537 p_block
->i_dts
, p_block
->i_length
,
538 p_sys
->i_pts_last
, out_args
.numOutBytes
,
539 out_args
.numInSamples
, i_samples
, i_loop_count
);
541 if ( likely(i_samples
> 0) )
543 p_sys
->d_compression_ratio
= (double)p_block
->i_length
/ (double)out_args
.numOutBytes
;
544 i_samples_left
-= out_args
.numInSamples
/p_enc
->fmt_in
.audio
.i_channels
;
545 p_sys
->i_pts_last
= i_pts_out
;
550 block_Release(p_block
);
551 //msg_Dbg( p_enc, "aac_encode_audio: not enough data yet");
554 if ( unlikely(i_loop_count
++ > 100) )
556 msg_Err( p_enc
, "Loop count greater than 100!!!, something must be wrong with the encoder library");
565 /*****************************************************************************
566 * CloseDecoder: decoder destruction
567 *****************************************************************************/
568 static void CloseEncoder( vlc_object_t
*p_this
)
570 encoder_t
*p_enc
= (encoder_t
*)p_this
;
571 encoder_sys_t
*p_sys
= p_enc
->p_sys
;
573 aacEncClose(&p_sys
->handle
);