1 /*****************************************************************************
2 * encoder.c: video and audio encoder using the ffmpeg library
3 *****************************************************************************
4 * Copyright (C) 1999-2004 VideoLAN
7 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
8 * Gildas Bazin <gbazin@videolan.org>
9 * Christophe Massiot <massiot@via.ecp.fr>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
24 *****************************************************************************/
26 /*****************************************************************************
28 *****************************************************************************/
33 #include <vlc/decoder.h>
37 #ifdef HAVE_FFMPEG_AVCODEC_H
38 # include <ffmpeg/avcodec.h>
43 #if LIBAVCODEC_BUILD < 4704
44 # define AV_NOPTS_VALUE 0
46 #if LIBAVCODEC_BUILD < 4684
47 # define FF_QP2LAMBDA 118
52 #define AVCODEC_MAX_VIDEO_FRAME_SIZE (3*1024*1024)
53 #define HURRY_UP_GUARD1 (450000)
54 #define HURRY_UP_GUARD2 (300000)
55 #define HURRY_UP_GUARD3 (100000)
57 #define MAX_FRAME_DELAY (FF_MAX_B_FRAMES + 2)
59 /*****************************************************************************
61 *****************************************************************************/
62 int E_(OpenEncoder) ( vlc_object_t * );
63 void E_(CloseEncoder)( vlc_object_t * );
65 static block_t *EncodeVideo( encoder_t *, picture_t * );
66 static block_t *EncodeAudio( encoder_t *, aout_buffer_t * );
68 struct thread_context_t;
69 static int FfmpegThread( struct thread_context_t *p_context );
70 static int FfmpegExecute( AVCodecContext *s,
71 int (*pf_func)(AVCodecContext *c2, void *arg2),
72 void **arg, int *ret, int count );
74 /*****************************************************************************
75 * thread_context_t : for multithreaded encoding
76 *****************************************************************************/
77 #if LIBAVCODEC_BUILD >= 4702
78 struct thread_context_t
82 AVCodecContext *p_context;
83 int (* pf_func)(AVCodecContext *c, void *arg);
89 vlc_bool_t b_work, b_done;
93 /*****************************************************************************
94 * encoder_sys_t : ffmpeg encoder descriptor
95 *****************************************************************************/
102 AVCodecContext *p_context;
113 mtime_t i_last_ref_pts;
114 mtime_t i_buggy_pts_detect;
125 /* Encoding settings */
132 vlc_bool_t b_strict_rc;
133 int i_rc_buffer_size;
134 float f_rc_buffer_aggressivity;
136 vlc_bool_t b_hurry_up;
137 vlc_bool_t b_interlace;
138 float f_i_quant_factor;
139 int i_noise_reduction;
140 vlc_bool_t b_mpeg4_matrix;
141 vlc_bool_t b_trellis;
142 int i_quality; /* for VBR */
144 /* Used to work around stupid timestamping behaviour in libavcodec */
146 mtime_t pi_delay_pts[MAX_FRAME_DELAY];
149 static const char *ppsz_enc_options[] = {
150 "keyint", "bframes", "vt", "qmin", "qmax", "hq", "strict-rc",
151 "rc-buffer-size", "rc-buffer-aggressivity", "pre-me", "hurry-up",
152 "interlace", "i-quant-factor", "noise-reduction", "mpeg4-matrix",
153 "trellis", "qscale", "strict", NULL
156 /*****************************************************************************
157 * OpenEncoder: probe the encoder
158 *****************************************************************************/
159 extern int16_t IMPORT_SYMBOL ff_mpeg4_default_intra_matrix[];
160 extern int16_t IMPORT_SYMBOL ff_mpeg4_default_non_intra_matrix[];
162 int E_(OpenEncoder)( vlc_object_t *p_this )
164 encoder_t *p_enc = (encoder_t *)p_this;
165 encoder_sys_t *p_sys = p_enc->p_sys;
166 AVCodecContext *p_context;
168 int i_codec_id, i_cat;
172 if( !E_(GetFfmpegCodec)( p_enc->fmt_out.i_codec, &i_cat, &i_codec_id,
175 if( E_(GetFfmpegChroma)( p_enc->fmt_out.i_codec ) < 0 )
177 /* handed chroma output */
181 i_codec_id = CODEC_ID_RAWVIDEO;
182 psz_namecodec = "Raw video";
186 if( p_enc->fmt_out.i_cat == VIDEO_ES && i_cat != VIDEO_ES )
188 msg_Err( p_enc, "\"%s\" is not a video encoder", psz_namecodec );
192 if( p_enc->fmt_out.i_cat == AUDIO_ES && i_cat != AUDIO_ES )
194 msg_Err( p_enc, "\"%s\" is not an audio encoder", psz_namecodec );
198 /* Initialization must be done before avcodec_find_decoder() */
199 E_(InitLibavcodec)(p_this);
201 p_codec = avcodec_find_encoder( i_codec_id );
204 msg_Err( p_enc, "cannot find encoder %s", psz_namecodec );
208 /* Allocate the memory needed to store the decoder's structure */
209 if( ( p_sys = (encoder_sys_t *)malloc(sizeof(encoder_sys_t)) ) == NULL )
211 msg_Err( p_enc, "out of memory" );
214 memset( p_sys, 0, sizeof(encoder_sys_t) );
215 p_enc->p_sys = p_sys;
216 p_sys->p_codec = p_codec;
218 p_enc->pf_encode_video = EncodeVideo;
219 p_enc->pf_encode_audio = EncodeAudio;
221 p_sys->p_buffer_out = NULL;
222 p_sys->p_buffer = NULL;
224 p_sys->p_context = p_context = avcodec_alloc_context();
226 /* Set CPU capabilities */
227 p_context->dsp_mask = 0;
228 if( !(p_enc->p_libvlc->i_cpu & CPU_CAPABILITY_MMX) )
230 p_context->dsp_mask |= FF_MM_MMX;
232 if( !(p_enc->p_libvlc->i_cpu & CPU_CAPABILITY_MMXEXT) )
234 p_context->dsp_mask |= FF_MM_MMXEXT;
236 if( !(p_enc->p_libvlc->i_cpu & CPU_CAPABILITY_3DNOW) )
238 p_context->dsp_mask |= FF_MM_3DNOW;
240 if( !(p_enc->p_libvlc->i_cpu & CPU_CAPABILITY_SSE) )
242 p_context->dsp_mask |= FF_MM_SSE;
243 p_context->dsp_mask |= FF_MM_SSE2;
246 sout_CfgParse( p_enc, ENC_CFG_PREFIX, ppsz_enc_options, p_enc->p_cfg );
248 var_Get( p_enc, ENC_CFG_PREFIX "keyint", &val );
249 p_sys->i_key_int = val.i_int;
251 var_Get( p_enc, ENC_CFG_PREFIX "bframes", &val );
252 p_sys->i_b_frames = val.i_int;
254 var_Get( p_enc, ENC_CFG_PREFIX "vt", &val );
255 p_sys->i_vtolerance = val.i_int;
257 var_Get( p_enc, ENC_CFG_PREFIX "interlace", &val );
258 p_sys->b_interlace = val.b_bool;
260 var_Get( p_enc, ENC_CFG_PREFIX "pre-me", &val );
261 p_sys->b_pre_me = val.b_bool;
263 var_Get( p_enc, ENC_CFG_PREFIX "hurry-up", &val );
264 p_sys->b_hurry_up = val.b_bool;
265 if( p_sys->b_hurry_up )
267 /* hurry up mode needs noise reduction, even small */
268 p_sys->i_noise_reduction = 1;
271 var_Get( p_enc, ENC_CFG_PREFIX "strict-rc", &val );
272 p_sys->b_strict_rc = val.b_bool;
273 var_Get( p_enc, ENC_CFG_PREFIX "rc-buffer-size", &val );
274 p_sys->i_rc_buffer_size = val.i_int;
275 var_Get( p_enc, ENC_CFG_PREFIX "rc-buffer-aggressivity", &val );
276 p_sys->f_rc_buffer_aggressivity = val.f_float;
278 var_Get( p_enc, ENC_CFG_PREFIX "i-quant-factor", &val );
279 p_sys->f_i_quant_factor = val.f_float;
281 var_Get( p_enc, ENC_CFG_PREFIX "noise-reduction", &val );
282 p_sys->i_noise_reduction = val.i_int;
284 var_Get( p_enc, ENC_CFG_PREFIX "mpeg4-matrix", &val );
285 p_sys->b_mpeg4_matrix = val.b_bool;
287 var_Get( p_enc, ENC_CFG_PREFIX "qscale", &val );
288 if( val.f_float < 0.01 || val.f_float > 255.0 ) val.f_float = 0;
289 p_sys->i_quality = (int)(FF_QP2LAMBDA * val.f_float + 0.5);
291 var_Get( p_enc, ENC_CFG_PREFIX "hq", &val );
292 if( val.psz_string && *val.psz_string )
294 if( !strcmp( val.psz_string, "rd" ) )
295 p_sys->i_hq = FF_MB_DECISION_RD;
296 else if( !strcmp( val.psz_string, "bits" ) )
297 p_sys->i_hq = FF_MB_DECISION_BITS;
298 else if( !strcmp( val.psz_string, "simple" ) )
299 p_sys->i_hq = FF_MB_DECISION_SIMPLE;
301 p_sys->i_hq = FF_MB_DECISION_RD;
303 if( val.psz_string ) free( val.psz_string );
305 var_Get( p_enc, ENC_CFG_PREFIX "qmin", &val );
306 p_sys->i_qmin = val.i_int;
307 var_Get( p_enc, ENC_CFG_PREFIX "qmax", &val );
308 p_sys->i_qmax = val.i_int;
309 var_Get( p_enc, ENC_CFG_PREFIX "trellis", &val );
310 p_sys->b_trellis = val.b_bool;
312 var_Get( p_enc, ENC_CFG_PREFIX "strict", &val );
313 if( val.i_int < - 1 || val.i_int > 1 ) val.i_int = 0;
314 p_context->strict_std_compliance = val.i_int;
316 if( p_enc->fmt_in.i_cat == VIDEO_ES )
318 int i_aspect_num, i_aspect_den;
320 if( !p_enc->fmt_in.video.i_width || !p_enc->fmt_in.video.i_height )
322 msg_Warn( p_enc, "invalid size %ix%i", p_enc->fmt_in.video.i_width,
323 p_enc->fmt_in.video.i_height );
328 p_context->width = p_enc->fmt_in.video.i_width;
329 p_context->height = p_enc->fmt_in.video.i_height;
331 p_context->frame_rate = p_enc->fmt_in.video.i_frame_rate;
332 p_context->frame_rate_base= p_enc->fmt_in.video.i_frame_rate_base;
334 /* Defaults from ffmpeg.c */
335 p_context->qblur = 0.5;
336 p_context->qcompress = 0.5;
337 p_context->b_quant_offset = 1.25;
338 p_context->b_quant_factor = 1.25;
339 p_context->i_quant_offset = 0.0;
340 p_context->i_quant_factor = -0.8;
342 if( p_sys->i_key_int > 0 )
343 p_context->gop_size = p_sys->i_key_int;
344 p_context->max_b_frames =
345 __MAX( __MIN( p_sys->i_b_frames, FF_MAX_B_FRAMES ), 0 );
346 p_context->b_frame_strategy = 0;
348 #if LIBAVCODEC_BUILD >= 4687
349 av_reduce( &i_aspect_num, &i_aspect_den,
350 p_enc->fmt_in.video.i_aspect,
351 VOUT_ASPECT_FACTOR, 1 << 30 /* something big */ );
352 av_reduce( &p_context->sample_aspect_ratio.num,
353 &p_context->sample_aspect_ratio.den,
354 i_aspect_num * (int64_t)p_context->height,
355 i_aspect_den * (int64_t)p_context->width, 1 << 30 );
357 p_context->aspect_ratio = ((float)p_enc->fmt_in.video.i_aspect) /
361 p_sys->p_buffer_out = malloc( AVCODEC_MAX_VIDEO_FRAME_SIZE );
363 p_enc->fmt_in.i_codec = VLC_FOURCC('I','4','2','0');
364 p_context->pix_fmt = E_(GetFfmpegChroma)( p_enc->fmt_in.i_codec );
365 #if LIBAVCODEC_BUILD >= 4714
366 if( p_codec->pix_fmts )
368 const enum PixelFormat *p = p_codec->pix_fmts;
369 for( ; *p != -1; p++ )
371 if( *p == p_context->pix_fmt ) break;
373 if( *p == -1 ) p_context->pix_fmt = p_codec->pix_fmts[0];
374 p_enc->fmt_in.i_codec = E_(GetVlcChroma)( p_context->pix_fmt );
377 p_enc->fmt_in.i_codec = E_(GetVlcChroma)( p_context->pix_fmt );
380 if ( p_sys->b_strict_rc )
382 p_context->rc_max_rate = p_enc->fmt_out.i_bitrate;
383 p_context->rc_buffer_size = p_sys->i_rc_buffer_size;
384 p_context->rc_buffer_aggressivity = p_sys->f_rc_buffer_aggressivity;
387 if ( p_sys->f_i_quant_factor != 0.0 )
388 p_context->i_quant_factor = p_sys->f_i_quant_factor;
390 #if LIBAVCODEC_BUILD >= 4690
391 p_context->noise_reduction = p_sys->i_noise_reduction;
394 if ( p_sys->b_mpeg4_matrix )
396 p_context->intra_matrix = ff_mpeg4_default_intra_matrix;
397 p_context->inter_matrix = ff_mpeg4_default_non_intra_matrix;
400 if ( p_sys->b_pre_me )
402 p_context->pre_me = 1;
403 p_context->me_pre_cmp = FF_CMP_CHROMA;
406 if ( p_sys->b_interlace )
408 p_context->flags |= CODEC_FLAG_INTERLACED_DCT;
409 #if LIBAVCODEC_BUILD >= 4698
410 p_context->flags |= CODEC_FLAG_INTERLACED_ME;
414 if ( p_sys->b_trellis )
415 p_context->flags |= CODEC_FLAG_TRELLIS_QUANT;
417 #if LIBAVCODEC_BUILD >= 4702
418 if ( p_enc->i_threads >= 1 )
419 p_context->thread_count = p_enc->i_threads;
422 if( p_sys->i_vtolerance > 0 )
423 p_context->bit_rate_tolerance = p_sys->i_vtolerance;
425 if( p_sys->i_qmin > 0 )
426 p_context->mb_qmin = p_context->qmin = p_sys->i_qmin;
427 if( p_sys->i_qmax > 0 )
428 p_context->mb_qmax = p_context->qmax = p_sys->i_qmax;
429 p_context->max_qdiff = 3;
431 p_context->mb_decision = p_sys->i_hq;
433 if( p_sys->i_quality )
435 p_context->flags |= CODEC_FLAG_QSCALE;
436 #if LIBAVCODEC_BUILD >= 4668
437 p_context->global_quality = p_sys->i_quality;
441 else if( p_enc->fmt_in.i_cat == AUDIO_ES )
443 /* work around bug in libmp3lame encoding */
444 if( i_codec_id == CODEC_ID_MP3 && p_enc->fmt_in.audio.i_channels > 2 )
445 p_enc->fmt_in.audio.i_channels = 2;
447 p_enc->fmt_in.i_codec = AOUT_FMT_S16_NE;
448 p_context->sample_rate = p_enc->fmt_in.audio.i_rate;
449 p_context->channels = p_enc->fmt_in.audio.i_channels;
452 /* Misc parameters */
453 p_context->bit_rate = p_enc->fmt_out.i_bitrate;
455 if( i_codec_id == CODEC_ID_RAWVIDEO )
457 /* XXX: hack: Force same codec (will be handled by transcode) */
458 p_enc->fmt_in.i_codec = p_enc->fmt_out.i_codec;
459 p_context->pix_fmt = E_(GetFfmpegChroma)( p_enc->fmt_in.i_codec );
462 /* Make sure we get extradata filled by the encoder */
463 p_context->extradata_size = 0;
464 p_context->extradata = NULL;
465 p_context->flags |= CODEC_FLAG_GLOBAL_HEADER;
467 if( avcodec_open( p_context, p_codec ) )
469 if( p_enc->fmt_in.i_cat == AUDIO_ES && p_context->channels > 2 )
471 p_context->channels = 2;
472 p_enc->fmt_in.audio.i_channels = 2; // FIXME
473 if( avcodec_open( p_context, p_codec ) )
475 msg_Err( p_enc, "cannot open encoder" );
479 msg_Warn( p_enc, "stereo mode selected (codec limitation)" );
483 msg_Err( p_enc, "cannot open encoder" );
489 p_enc->fmt_out.i_extra = p_context->extradata_size;
490 p_enc->fmt_out.p_extra = p_context->extradata;
491 p_context->flags &= ~CODEC_FLAG_GLOBAL_HEADER;
493 if( p_enc->fmt_in.i_cat == AUDIO_ES )
495 p_sys->p_buffer_out = malloc( 2 * AVCODEC_MAX_AUDIO_FRAME_SIZE );
496 p_sys->i_frame_size = p_context->frame_size * 2 * p_context->channels;
497 p_sys->p_buffer = malloc( p_sys->i_frame_size );
500 msg_Dbg( p_enc, "found encoder %s", psz_namecodec );
505 /****************************************************************************
506 * Ffmpeg threading system
507 ****************************************************************************/
508 #if LIBAVCODEC_BUILD >= 4702
509 static int FfmpegThread( struct thread_context_t *p_context )
511 while ( !p_context->b_die && !p_context->b_error )
513 vlc_mutex_lock( &p_context->lock );
514 while ( !p_context->b_work && !p_context->b_die && !p_context->b_error )
516 vlc_cond_wait( &p_context->cond, &p_context->lock );
518 p_context->b_work = 0;
519 vlc_mutex_unlock( &p_context->lock );
520 if ( p_context->b_die || p_context->b_error )
523 if ( p_context->pf_func )
525 p_context->i_ret = p_context->pf_func( p_context->p_context,
529 vlc_mutex_lock( &p_context->lock );
530 p_context->b_done = 1;
531 vlc_cond_signal( &p_context->cond );
532 vlc_mutex_unlock( &p_context->lock );
538 static int FfmpegExecute( AVCodecContext *s,
539 int (*pf_func)(AVCodecContext *c2, void *arg2),
540 void **arg, int *ret, int count )
542 struct thread_context_t ** pp_contexts =
543 (struct thread_context_t **)s->thread_opaque;
546 /* Note, we can be certain that this is not called with the same
547 * AVCodecContext by different threads at the same time */
548 for ( i = 0; i < count; i++ )
550 vlc_mutex_lock( &pp_contexts[i]->lock );
551 pp_contexts[i]->arg = arg[i];
552 pp_contexts[i]->pf_func = pf_func;
553 pp_contexts[i]->i_ret = 12345;
554 pp_contexts[i]->b_work = 1;
555 vlc_cond_signal( &pp_contexts[i]->cond );
556 vlc_mutex_unlock( &pp_contexts[i]->lock );
558 for ( i = 0; i < count; i++ )
560 vlc_mutex_lock( &pp_contexts[i]->lock );
561 while ( !pp_contexts[i]->b_done )
563 vlc_cond_wait( &pp_contexts[i]->cond, &pp_contexts[i]->lock );
565 pp_contexts[i]->b_done = 0;
566 pp_contexts[i]->pf_func = NULL;
567 vlc_mutex_unlock( &pp_contexts[i]->lock );
571 ret[i] = pp_contexts[i]->i_ret;
579 /****************************************************************************
580 * EncodeVideo: the whole thing
581 ****************************************************************************/
582 static block_t *EncodeVideo( encoder_t *p_enc, picture_t *p_pict )
584 encoder_sys_t *p_sys = p_enc->p_sys;
588 #if LIBAVCODEC_BUILD >= 4702
589 if ( !p_sys->b_inited && p_enc->i_threads >= 1 )
591 struct thread_context_t ** pp_contexts;
595 pp_contexts = malloc( sizeof(struct thread_context_t *)
596 * p_enc->i_threads );
597 p_sys->p_context->thread_opaque = (void *)pp_contexts;
599 for ( i = 0; i < p_enc->i_threads; i++ )
601 pp_contexts[i] = vlc_object_create( p_enc,
602 sizeof(struct thread_context_t) );
603 pp_contexts[i]->p_context = p_sys->p_context;
604 vlc_mutex_init( p_enc, &pp_contexts[i]->lock );
605 vlc_cond_init( p_enc, &pp_contexts[i]->cond );
606 pp_contexts[i]->b_work = 0;
607 pp_contexts[i]->b_done = 0;
608 if ( vlc_thread_create( pp_contexts[i], "encoder", FfmpegThread,
609 VLC_THREAD_PRIORITY_VIDEO, VLC_FALSE ) )
611 msg_Err( p_enc, "cannot spawn encoder thread, expect to die soon" );
616 p_sys->p_context->execute = FfmpegExecute;
620 memset( &frame, 0, sizeof( AVFrame ) );
621 for( i_plane = 0; i_plane < p_pict->i_planes; i_plane++ )
623 frame.data[i_plane] = p_pict->p[i_plane].p_pixels;
624 frame.linesize[i_plane] = p_pict->p[i_plane].i_pitch;
627 /* Let ffmpeg select the frame type */
630 frame.repeat_pict = 2 - p_pict->i_nb_fields;
632 #if LIBAVCODEC_BUILD >= 4685
633 frame.interlaced_frame = !p_pict->b_progressive;
634 frame.top_field_first = !!p_pict->b_top_field_first;
637 #if LIBAVCODEC_BUILD < 4702
638 /* Set the pts of the frame being encoded (segfaults with mpeg4!)*/
639 if( p_enc->fmt_out.i_codec == VLC_FOURCC( 'm', 'p', 'g', 'v' ) ||
640 p_enc->fmt_out.i_codec == VLC_FOURCC( 'm', 'p', '1', 'v' ) ||
641 p_enc->fmt_out.i_codec == VLC_FOURCC( 'm', 'p', '2', 'v' ) )
646 frame.pts = p_pict->date ? p_pict->date : AV_NOPTS_VALUE;
648 if ( p_sys->b_hurry_up && frame.pts != AV_NOPTS_VALUE )
650 mtime_t current_date = mdate();
652 if ( current_date + HURRY_UP_GUARD3 > frame.pts )
654 p_sys->p_context->mb_decision = FF_MB_DECISION_SIMPLE;
655 p_sys->p_context->flags &= ~CODEC_FLAG_TRELLIS_QUANT;
656 msg_Dbg( p_enc, "hurry up mode 3" );
660 p_sys->p_context->mb_decision = p_sys->i_hq;
662 if ( current_date + HURRY_UP_GUARD2 > frame.pts )
664 p_sys->p_context->flags &= ~CODEC_FLAG_TRELLIS_QUANT;
665 #if LIBAVCODEC_BUILD >= 4690
666 p_sys->p_context->noise_reduction = p_sys->i_noise_reduction
667 + (HURRY_UP_GUARD2 + current_date - frame.pts) / 500;
669 msg_Dbg( p_enc, "hurry up mode 2" );
673 if ( p_sys->b_trellis )
674 p_sys->p_context->flags |= CODEC_FLAG_TRELLIS_QUANT;
675 #if LIBAVCODEC_BUILD >= 4690
676 p_sys->p_context->noise_reduction =
677 p_sys->i_noise_reduction;
682 if ( current_date + HURRY_UP_GUARD1 > frame.pts )
684 frame.pict_type = FF_P_TYPE;
685 /* msg_Dbg( p_enc, "hurry up mode 1 %lld", current_date + HURRY_UP_GUARD1 - frame.pts ); */
691 frame.pts = AV_NOPTS_VALUE;
694 if ( frame.pts != AV_NOPTS_VALUE && frame.pts != 0 )
696 if ( p_sys->i_last_pts == frame.pts )
698 msg_Warn( p_enc, "almost fed libavcodec with two frames with the "
699 "same PTS (" I64Fd ")", frame.pts );
702 else if ( p_sys->i_last_pts > frame.pts )
704 msg_Warn( p_enc, "almost fed libavcodec with a frame in the "
705 "past (current: " I64Fd ", last: "I64Fd")",
706 frame.pts, p_sys->i_last_pts );
711 p_sys->i_last_pts = frame.pts;
715 frame.quality = p_sys->i_quality;
717 /* Ugly work-around for stupid libavcodec behaviour */
718 #if LIBAVCODEC_BUILD >= 4722
720 p_sys->pi_delay_pts[p_sys->i_framenum % MAX_FRAME_DELAY] = frame.pts;
721 frame.pts = p_sys->i_framenum * AV_TIME_BASE *
722 p_enc->fmt_in.video.i_frame_rate_base;
723 frame.pts += p_enc->fmt_in.video.i_frame_rate - 1;
724 frame.pts /= p_enc->fmt_in.video.i_frame_rate;
726 /* End work-around */
728 i_out = avcodec_encode_video( p_sys->p_context, p_sys->p_buffer_out,
729 AVCODEC_MAX_VIDEO_FRAME_SIZE, &frame );
733 block_t *p_block = block_New( p_enc, i_out );
734 memcpy( p_block->p_buffer, p_sys->p_buffer_out, i_out );
736 /* FIXME, 3-2 pulldown is not handled correctly */
737 p_block->i_length = I64C(1000000) *
738 p_enc->fmt_in.video.i_frame_rate_base /
739 p_enc->fmt_in.video.i_frame_rate;
741 if( !p_sys->p_context->max_b_frames || !p_sys->p_context->delay )
743 /* No delay -> output pts == input pts */
744 p_block->i_pts = p_block->i_dts = p_pict->date;
746 else if( p_sys->p_context->coded_frame->pts != AV_NOPTS_VALUE &&
747 p_sys->p_context->coded_frame->pts != 0 &&
748 p_sys->i_buggy_pts_detect != p_sys->p_context->coded_frame->pts )
750 p_sys->i_buggy_pts_detect = p_sys->p_context->coded_frame->pts;
751 p_block->i_pts = p_sys->p_context->coded_frame->pts;
753 /* Ugly work-around for stupid libavcodec behaviour */
754 #if LIBAVCODEC_BUILD >= 4722
756 int64_t i_framenum = p_block->i_pts *
757 p_enc->fmt_in.video.i_frame_rate /
758 p_enc->fmt_in.video.i_frame_rate_base / AV_TIME_BASE;
760 p_block->i_pts = p_sys->pi_delay_pts[i_framenum % MAX_FRAME_DELAY];
763 /* End work-around */
765 if( p_sys->p_context->coded_frame->pict_type != FF_I_TYPE &&
766 p_sys->p_context->coded_frame->pict_type != FF_P_TYPE )
768 p_block->i_dts = p_block->i_pts;
772 if( p_sys->i_last_ref_pts )
774 p_block->i_dts = p_sys->i_last_ref_pts;
778 /* Let's put something sensible */
779 p_block->i_dts = p_block->i_pts;
782 p_sys->i_last_ref_pts = p_block->i_pts;
787 /* Buggy libavcodec which doesn't update coded_frame->pts
789 p_block->i_dts = p_block->i_pts = p_pict->date;
792 switch ( p_sys->p_context->coded_frame->pict_type )
795 p_block->i_flags |= BLOCK_FLAG_TYPE_I;
798 p_block->i_flags |= BLOCK_FLAG_TYPE_P;
801 p_block->i_flags |= BLOCK_FLAG_TYPE_B;
811 /****************************************************************************
812 * EncodeAudio: the whole thing
813 ****************************************************************************/
814 static block_t *EncodeAudio( encoder_t *p_enc, aout_buffer_t *p_aout_buf )
816 encoder_sys_t *p_sys = p_enc->p_sys;
817 block_t *p_block, *p_chain = NULL;
819 char *p_buffer = p_aout_buf->p_buffer;
820 int i_samples = p_aout_buf->i_nb_samples;
821 int i_samples_delay = p_sys->i_samples_delay;
823 p_sys->i_pts = p_aout_buf->start_date -
824 (mtime_t)1000000 * (mtime_t)p_sys->i_samples_delay /
825 (mtime_t)p_enc->fmt_in.audio.i_rate;
827 p_sys->i_samples_delay += i_samples;
829 while( p_sys->i_samples_delay >= p_sys->p_context->frame_size )
834 if( i_samples_delay )
836 /* Take care of the left-over from last time */
837 int i_delay_size = i_samples_delay * 2 *
838 p_sys->p_context->channels;
839 int i_size = p_sys->i_frame_size - i_delay_size;
841 p_samples = (int16_t *)p_sys->p_buffer;
842 memcpy( p_sys->p_buffer + i_delay_size, p_buffer, i_size );
843 p_buffer -= i_delay_size;
844 i_samples += i_samples_delay;
849 p_samples = (int16_t *)p_buffer;
852 i_out = avcodec_encode_audio( p_sys->p_context, p_sys->p_buffer_out,
853 2 * AVCODEC_MAX_AUDIO_FRAME_SIZE,
857 msg_Warn( p_enc, "avcodec_encode_audio: %d", i_out );
859 if( i_out < 0 ) break;
861 p_buffer += p_sys->i_frame_size;
862 p_sys->i_samples_delay -= p_sys->p_context->frame_size;
863 i_samples -= p_sys->p_context->frame_size;
865 if( i_out == 0 ) continue;
867 p_block = block_New( p_enc, i_out );
868 memcpy( p_block->p_buffer, p_sys->p_buffer_out, i_out );
870 p_block->i_length = (mtime_t)1000000 *
871 (mtime_t)p_sys->p_context->frame_size /
872 (mtime_t)p_sys->p_context->sample_rate;
874 p_block->i_dts = p_block->i_pts = p_sys->i_pts;
877 p_sys->i_pts += p_block->i_length;
878 block_ChainAppend( &p_chain, p_block );
881 /* Backup the remaining raw samples */
884 memcpy( p_sys->p_buffer + i_samples_delay * 2 *
885 p_sys->p_context->channels, p_buffer,
886 i_samples * 2 * p_sys->p_context->channels );
892 /*****************************************************************************
893 * CloseEncoder: ffmpeg encoder destruction
894 *****************************************************************************/
895 void E_(CloseEncoder)( vlc_object_t *p_this )
897 encoder_t *p_enc = (encoder_t *)p_this;
898 encoder_sys_t *p_sys = p_enc->p_sys;
900 #if LIBAVCODEC_BUILD >= 4702
901 if ( p_sys->b_inited && p_enc->i_threads >= 1 )
904 struct thread_context_t ** pp_contexts =
905 (struct thread_context_t **)p_sys->p_context->thread_opaque;
906 for ( i = 0; i < p_enc->i_threads; i++ )
908 pp_contexts[i]->b_die = 1;
909 vlc_cond_signal( &pp_contexts[i]->cond );
910 vlc_thread_join( pp_contexts[i] );
911 vlc_mutex_destroy( &pp_contexts[i]->lock );
912 vlc_cond_destroy( &pp_contexts[i]->cond );
913 vlc_object_destroy( pp_contexts[i] );
920 avcodec_close( p_sys->p_context );
921 av_free( p_sys->p_context );
923 if( p_sys->p_buffer ) free( p_sys->p_buffer );
924 if( p_sys->p_buffer_out ) free( p_sys->p_buffer_out );