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 */
143 float f_lumi_masking, f_dark_masking, f_p_masking, f_border_masking;
144 int i_luma_elim, i_chroma_elim;
146 /* Used to work around stupid timestamping behaviour in libavcodec */
148 mtime_t pi_delay_pts[MAX_FRAME_DELAY];
151 static const char *ppsz_enc_options[] = {
152 "keyint", "bframes", "vt", "qmin", "qmax", "hq", "strict-rc",
153 "rc-buffer-size", "rc-buffer-aggressivity", "pre-me", "hurry-up",
154 "interlace", "i-quant-factor", "noise-reduction", "mpeg4-matrix",
155 "trellis", "qscale", "strict", "lumi-masking", "dark-masking",
156 "p-masking", "border-masking", "luma-elim-threshold",
157 "chroma-elim-threshold", NULL
160 /*****************************************************************************
161 * OpenEncoder: probe the encoder
162 *****************************************************************************/
163 extern int16_t IMPORT_SYMBOL ff_mpeg4_default_intra_matrix[];
164 extern int16_t IMPORT_SYMBOL ff_mpeg4_default_non_intra_matrix[];
166 int E_(OpenEncoder)( vlc_object_t *p_this )
168 encoder_t *p_enc = (encoder_t *)p_this;
169 encoder_sys_t *p_sys = p_enc->p_sys;
170 AVCodecContext *p_context;
172 int i_codec_id, i_cat;
176 if( !E_(GetFfmpegCodec)( p_enc->fmt_out.i_codec, &i_cat, &i_codec_id,
179 if( E_(GetFfmpegChroma)( p_enc->fmt_out.i_codec ) < 0 )
181 /* handed chroma output */
185 i_codec_id = CODEC_ID_RAWVIDEO;
186 psz_namecodec = "Raw video";
190 if( p_enc->fmt_out.i_cat == VIDEO_ES && i_cat != VIDEO_ES )
192 msg_Err( p_enc, "\"%s\" is not a video encoder", psz_namecodec );
196 if( p_enc->fmt_out.i_cat == AUDIO_ES && i_cat != AUDIO_ES )
198 msg_Err( p_enc, "\"%s\" is not an audio encoder", psz_namecodec );
202 /* Initialization must be done before avcodec_find_decoder() */
203 E_(InitLibavcodec)(p_this);
205 p_codec = avcodec_find_encoder( i_codec_id );
208 msg_Err( p_enc, "cannot find encoder %s", psz_namecodec );
212 /* Allocate the memory needed to store the decoder's structure */
213 if( ( p_sys = (encoder_sys_t *)malloc(sizeof(encoder_sys_t)) ) == NULL )
215 msg_Err( p_enc, "out of memory" );
218 memset( p_sys, 0, sizeof(encoder_sys_t) );
219 p_enc->p_sys = p_sys;
220 p_sys->p_codec = p_codec;
222 p_enc->pf_encode_video = EncodeVideo;
223 p_enc->pf_encode_audio = EncodeAudio;
225 p_sys->p_buffer_out = NULL;
226 p_sys->p_buffer = NULL;
228 p_sys->p_context = p_context = avcodec_alloc_context();
230 /* Set CPU capabilities */
231 p_context->dsp_mask = 0;
232 if( !(p_enc->p_libvlc->i_cpu & CPU_CAPABILITY_MMX) )
234 p_context->dsp_mask |= FF_MM_MMX;
236 if( !(p_enc->p_libvlc->i_cpu & CPU_CAPABILITY_MMXEXT) )
238 p_context->dsp_mask |= FF_MM_MMXEXT;
240 if( !(p_enc->p_libvlc->i_cpu & CPU_CAPABILITY_3DNOW) )
242 p_context->dsp_mask |= FF_MM_3DNOW;
244 if( !(p_enc->p_libvlc->i_cpu & CPU_CAPABILITY_SSE) )
246 p_context->dsp_mask |= FF_MM_SSE;
247 p_context->dsp_mask |= FF_MM_SSE2;
250 sout_CfgParse( p_enc, ENC_CFG_PREFIX, ppsz_enc_options, p_enc->p_cfg );
252 var_Get( p_enc, ENC_CFG_PREFIX "keyint", &val );
253 p_sys->i_key_int = val.i_int;
255 var_Get( p_enc, ENC_CFG_PREFIX "bframes", &val );
256 p_sys->i_b_frames = val.i_int;
258 var_Get( p_enc, ENC_CFG_PREFIX "vt", &val );
259 p_sys->i_vtolerance = val.i_int;
261 var_Get( p_enc, ENC_CFG_PREFIX "interlace", &val );
262 p_sys->b_interlace = val.b_bool;
264 var_Get( p_enc, ENC_CFG_PREFIX "pre-me", &val );
265 p_sys->b_pre_me = val.b_bool;
267 var_Get( p_enc, ENC_CFG_PREFIX "hurry-up", &val );
268 p_sys->b_hurry_up = val.b_bool;
269 if( p_sys->b_hurry_up )
271 /* hurry up mode needs noise reduction, even small */
272 p_sys->i_noise_reduction = 1;
275 var_Get( p_enc, ENC_CFG_PREFIX "strict-rc", &val );
276 p_sys->b_strict_rc = val.b_bool;
277 var_Get( p_enc, ENC_CFG_PREFIX "rc-buffer-size", &val );
278 p_sys->i_rc_buffer_size = val.i_int;
279 var_Get( p_enc, ENC_CFG_PREFIX "rc-buffer-aggressivity", &val );
280 p_sys->f_rc_buffer_aggressivity = val.f_float;
282 var_Get( p_enc, ENC_CFG_PREFIX "i-quant-factor", &val );
283 p_sys->f_i_quant_factor = val.f_float;
285 var_Get( p_enc, ENC_CFG_PREFIX "noise-reduction", &val );
286 p_sys->i_noise_reduction = val.i_int;
288 var_Get( p_enc, ENC_CFG_PREFIX "mpeg4-matrix", &val );
289 p_sys->b_mpeg4_matrix = val.b_bool;
291 var_Get( p_enc, ENC_CFG_PREFIX "qscale", &val );
292 if( val.f_float < 0.01 || val.f_float > 255.0 ) val.f_float = 0;
293 p_sys->i_quality = (int)(FF_QP2LAMBDA * val.f_float + 0.5);
295 var_Get( p_enc, ENC_CFG_PREFIX "hq", &val );
296 if( val.psz_string && *val.psz_string )
298 if( !strcmp( val.psz_string, "rd" ) )
299 p_sys->i_hq = FF_MB_DECISION_RD;
300 else if( !strcmp( val.psz_string, "bits" ) )
301 p_sys->i_hq = FF_MB_DECISION_BITS;
302 else if( !strcmp( val.psz_string, "simple" ) )
303 p_sys->i_hq = FF_MB_DECISION_SIMPLE;
305 p_sys->i_hq = FF_MB_DECISION_RD;
307 if( val.psz_string ) free( val.psz_string );
309 var_Get( p_enc, ENC_CFG_PREFIX "qmin", &val );
310 p_sys->i_qmin = val.i_int;
311 var_Get( p_enc, ENC_CFG_PREFIX "qmax", &val );
312 p_sys->i_qmax = val.i_int;
313 var_Get( p_enc, ENC_CFG_PREFIX "trellis", &val );
314 p_sys->b_trellis = val.b_bool;
316 var_Get( p_enc, ENC_CFG_PREFIX "strict", &val );
317 if( val.i_int < - 1 || val.i_int > 1 ) val.i_int = 0;
318 p_context->strict_std_compliance = val.i_int;
320 var_Get( p_enc, ENC_CFG_PREFIX "lumi-masking", &val );
321 p_sys->f_lumi_masking = val.f_float;
322 var_Get( p_enc, ENC_CFG_PREFIX "dark-masking", &val );
323 p_sys->f_dark_masking = val.f_float;
324 var_Get( p_enc, ENC_CFG_PREFIX "p-masking", &val );
325 p_sys->f_p_masking = val.f_float;
326 var_Get( p_enc, ENC_CFG_PREFIX "border-masking", &val );
327 p_sys->f_border_masking = val.f_float;
328 var_Get( p_enc, ENC_CFG_PREFIX "luma-elim-threshold", &val );
329 p_sys->i_luma_elim = val.i_int;
330 var_Get( p_enc, ENC_CFG_PREFIX "chroma-elim-threshold", &val );
331 p_sys->i_chroma_elim = val.i_int;
333 if( p_enc->fmt_in.i_cat == VIDEO_ES )
335 int i_aspect_num, i_aspect_den;
337 if( !p_enc->fmt_in.video.i_width || !p_enc->fmt_in.video.i_height )
339 msg_Warn( p_enc, "invalid size %ix%i", p_enc->fmt_in.video.i_width,
340 p_enc->fmt_in.video.i_height );
345 p_context->width = p_enc->fmt_in.video.i_width;
346 p_context->height = p_enc->fmt_in.video.i_height;
348 #if LIBAVCODEC_BUILD >= 4754
349 p_context->time_base.num = p_enc->fmt_in.video.i_frame_rate_base;
350 p_context->time_base.den = p_enc->fmt_in.video.i_frame_rate;
352 p_context->frame_rate = p_enc->fmt_in.video.i_frame_rate;
353 p_context->frame_rate_base= p_enc->fmt_in.video.i_frame_rate_base;
356 /* Defaults from ffmpeg.c */
357 p_context->qblur = 0.5;
358 p_context->qcompress = 0.5;
359 p_context->b_quant_offset = 1.25;
360 p_context->b_quant_factor = 1.25;
361 p_context->i_quant_offset = 0.0;
362 p_context->i_quant_factor = -0.8;
364 p_context->lumi_masking = p_sys->f_lumi_masking;
365 p_context->dark_masking = p_sys->f_dark_masking;
366 p_context->p_masking = p_sys->f_p_masking;
367 p_context->border_masking = p_sys->f_border_masking;
368 p_context->luma_elim_threshold = p_sys->i_luma_elim;
369 p_context->chroma_elim_threshold = p_sys->i_chroma_elim;
371 if( p_sys->i_key_int > 0 )
372 p_context->gop_size = p_sys->i_key_int;
373 p_context->max_b_frames =
374 __MAX( __MIN( p_sys->i_b_frames, FF_MAX_B_FRAMES ), 0 );
375 p_context->b_frame_strategy = 0;
377 #if LIBAVCODEC_BUILD >= 4687
378 av_reduce( &i_aspect_num, &i_aspect_den,
379 p_enc->fmt_in.video.i_aspect,
380 VOUT_ASPECT_FACTOR, 1 << 30 /* something big */ );
381 av_reduce( &p_context->sample_aspect_ratio.num,
382 &p_context->sample_aspect_ratio.den,
383 i_aspect_num * (int64_t)p_context->height,
384 i_aspect_den * (int64_t)p_context->width, 1 << 30 );
386 p_context->aspect_ratio = ((float)p_enc->fmt_in.video.i_aspect) /
390 p_sys->p_buffer_out = malloc( AVCODEC_MAX_VIDEO_FRAME_SIZE );
392 p_enc->fmt_in.i_codec = VLC_FOURCC('I','4','2','0');
393 p_context->pix_fmt = E_(GetFfmpegChroma)( p_enc->fmt_in.i_codec );
394 #if LIBAVCODEC_BUILD >= 4714
395 if( p_codec->pix_fmts )
397 const enum PixelFormat *p = p_codec->pix_fmts;
398 for( ; *p != -1; p++ )
400 if( *p == p_context->pix_fmt ) break;
402 if( *p == -1 ) p_context->pix_fmt = p_codec->pix_fmts[0];
403 p_enc->fmt_in.i_codec = E_(GetVlcChroma)( p_context->pix_fmt );
406 p_enc->fmt_in.i_codec = E_(GetVlcChroma)( p_context->pix_fmt );
409 if ( p_sys->b_strict_rc )
411 p_context->rc_max_rate = p_enc->fmt_out.i_bitrate;
412 p_context->rc_buffer_size = p_sys->i_rc_buffer_size;
413 /* This is from ffmpeg's ffmpeg.c : */
414 p_context->rc_initial_buffer_occupancy
415 = p_sys->i_rc_buffer_size * 3/4;
416 p_context->rc_buffer_aggressivity = p_sys->f_rc_buffer_aggressivity;
419 if ( p_sys->f_i_quant_factor != 0.0 )
420 p_context->i_quant_factor = p_sys->f_i_quant_factor;
422 #if LIBAVCODEC_BUILD >= 4690
423 p_context->noise_reduction = p_sys->i_noise_reduction;
426 if ( p_sys->b_mpeg4_matrix )
428 p_context->intra_matrix = ff_mpeg4_default_intra_matrix;
429 p_context->inter_matrix = ff_mpeg4_default_non_intra_matrix;
432 if ( p_sys->b_pre_me )
434 p_context->pre_me = 1;
435 p_context->me_pre_cmp = FF_CMP_CHROMA;
438 if ( p_sys->b_interlace )
440 p_context->flags |= CODEC_FLAG_INTERLACED_DCT;
441 #if LIBAVCODEC_BUILD >= 4698
442 p_context->flags |= CODEC_FLAG_INTERLACED_ME;
446 if ( p_sys->b_trellis )
447 p_context->flags |= CODEC_FLAG_TRELLIS_QUANT;
449 if ( p_sys->i_qmin > 0 && p_sys->i_qmin == p_sys->i_qmax )
450 p_context->flags |= CODEC_FLAG_QSCALE;
452 #if LIBAVCODEC_BUILD >= 4702
453 if ( p_enc->i_threads >= 1 )
454 p_context->thread_count = p_enc->i_threads;
457 if( p_sys->i_vtolerance > 0 )
458 p_context->bit_rate_tolerance = p_sys->i_vtolerance;
460 if( p_sys->i_qmin > 0 )
461 p_context->mb_qmin = p_context->qmin = p_sys->i_qmin;
462 if( p_sys->i_qmax > 0 )
463 p_context->mb_qmax = p_context->qmax = p_sys->i_qmax;
464 p_context->max_qdiff = 3;
466 p_context->mb_decision = p_sys->i_hq;
468 if( p_sys->i_quality )
470 p_context->flags |= CODEC_FLAG_QSCALE;
471 #if LIBAVCODEC_BUILD >= 4668
472 p_context->global_quality = p_sys->i_quality;
476 else if( p_enc->fmt_in.i_cat == AUDIO_ES )
478 /* work around bug in libmp3lame encoding */
479 if( i_codec_id == CODEC_ID_MP3 && p_enc->fmt_in.audio.i_channels > 2 )
480 p_enc->fmt_in.audio.i_channels = 2;
482 p_enc->fmt_in.i_codec = AOUT_FMT_S16_NE;
483 p_context->sample_rate = p_enc->fmt_in.audio.i_rate;
484 p_context->channels = p_enc->fmt_in.audio.i_channels;
487 /* Misc parameters */
488 p_context->bit_rate = p_enc->fmt_out.i_bitrate;
490 if( i_codec_id == CODEC_ID_RAWVIDEO )
492 /* XXX: hack: Force same codec (will be handled by transcode) */
493 p_enc->fmt_in.i_codec = p_enc->fmt_out.i_codec;
494 p_context->pix_fmt = E_(GetFfmpegChroma)( p_enc->fmt_in.i_codec );
497 /* Make sure we get extradata filled by the encoder */
498 p_context->extradata_size = 0;
499 p_context->extradata = NULL;
500 p_context->flags |= CODEC_FLAG_GLOBAL_HEADER;
502 if( avcodec_open( p_context, p_codec ) )
504 if( p_enc->fmt_in.i_cat == AUDIO_ES && p_context->channels > 2 )
506 p_context->channels = 2;
507 p_enc->fmt_in.audio.i_channels = 2; // FIXME
508 if( avcodec_open( p_context, p_codec ) )
510 msg_Err( p_enc, "cannot open encoder" );
514 msg_Warn( p_enc, "stereo mode selected (codec limitation)" );
518 msg_Err( p_enc, "cannot open encoder" );
524 p_enc->fmt_out.i_extra = p_context->extradata_size;
525 p_enc->fmt_out.p_extra = p_context->extradata;
526 p_context->flags &= ~CODEC_FLAG_GLOBAL_HEADER;
528 if( p_enc->fmt_in.i_cat == AUDIO_ES )
530 p_sys->p_buffer_out = malloc( 2 * AVCODEC_MAX_AUDIO_FRAME_SIZE );
531 p_sys->i_frame_size = p_context->frame_size * 2 * p_context->channels;
532 p_sys->p_buffer = malloc( p_sys->i_frame_size );
535 msg_Dbg( p_enc, "found encoder %s", psz_namecodec );
540 /****************************************************************************
541 * Ffmpeg threading system
542 ****************************************************************************/
543 #if LIBAVCODEC_BUILD >= 4702
544 static int FfmpegThread( struct thread_context_t *p_context )
546 while ( !p_context->b_die && !p_context->b_error )
548 vlc_mutex_lock( &p_context->lock );
549 while ( !p_context->b_work && !p_context->b_die && !p_context->b_error )
551 vlc_cond_wait( &p_context->cond, &p_context->lock );
553 p_context->b_work = 0;
554 vlc_mutex_unlock( &p_context->lock );
555 if ( p_context->b_die || p_context->b_error )
558 if ( p_context->pf_func )
560 p_context->i_ret = p_context->pf_func( p_context->p_context,
564 vlc_mutex_lock( &p_context->lock );
565 p_context->b_done = 1;
566 vlc_cond_signal( &p_context->cond );
567 vlc_mutex_unlock( &p_context->lock );
573 static int FfmpegExecute( AVCodecContext *s,
574 int (*pf_func)(AVCodecContext *c2, void *arg2),
575 void **arg, int *ret, int count )
577 struct thread_context_t ** pp_contexts =
578 (struct thread_context_t **)s->thread_opaque;
581 /* Note, we can be certain that this is not called with the same
582 * AVCodecContext by different threads at the same time */
583 for ( i = 0; i < count; i++ )
585 vlc_mutex_lock( &pp_contexts[i]->lock );
586 pp_contexts[i]->arg = arg[i];
587 pp_contexts[i]->pf_func = pf_func;
588 pp_contexts[i]->i_ret = 12345;
589 pp_contexts[i]->b_work = 1;
590 vlc_cond_signal( &pp_contexts[i]->cond );
591 vlc_mutex_unlock( &pp_contexts[i]->lock );
593 for ( i = 0; i < count; i++ )
595 vlc_mutex_lock( &pp_contexts[i]->lock );
596 while ( !pp_contexts[i]->b_done )
598 vlc_cond_wait( &pp_contexts[i]->cond, &pp_contexts[i]->lock );
600 pp_contexts[i]->b_done = 0;
601 pp_contexts[i]->pf_func = NULL;
602 vlc_mutex_unlock( &pp_contexts[i]->lock );
606 ret[i] = pp_contexts[i]->i_ret;
614 /****************************************************************************
615 * EncodeVideo: the whole thing
616 ****************************************************************************/
617 static block_t *EncodeVideo( encoder_t *p_enc, picture_t *p_pict )
619 encoder_sys_t *p_sys = p_enc->p_sys;
623 #if LIBAVCODEC_BUILD >= 4702
624 if ( !p_sys->b_inited && p_enc->i_threads >= 1 )
626 struct thread_context_t ** pp_contexts;
630 pp_contexts = malloc( sizeof(struct thread_context_t *)
631 * p_enc->i_threads );
632 p_sys->p_context->thread_opaque = (void *)pp_contexts;
634 for ( i = 0; i < p_enc->i_threads; i++ )
636 pp_contexts[i] = vlc_object_create( p_enc,
637 sizeof(struct thread_context_t) );
638 pp_contexts[i]->p_context = p_sys->p_context;
639 vlc_mutex_init( p_enc, &pp_contexts[i]->lock );
640 vlc_cond_init( p_enc, &pp_contexts[i]->cond );
641 pp_contexts[i]->b_work = 0;
642 pp_contexts[i]->b_done = 0;
643 if ( vlc_thread_create( pp_contexts[i], "encoder", FfmpegThread,
644 VLC_THREAD_PRIORITY_VIDEO, VLC_FALSE ) )
646 msg_Err( p_enc, "cannot spawn encoder thread, expect to die soon" );
651 p_sys->p_context->execute = FfmpegExecute;
655 memset( &frame, 0, sizeof( AVFrame ) );
656 for( i_plane = 0; i_plane < p_pict->i_planes; i_plane++ )
658 frame.data[i_plane] = p_pict->p[i_plane].p_pixels;
659 frame.linesize[i_plane] = p_pict->p[i_plane].i_pitch;
662 /* Let ffmpeg select the frame type */
665 frame.repeat_pict = 2 - p_pict->i_nb_fields;
667 #if LIBAVCODEC_BUILD >= 4685
668 frame.interlaced_frame = !p_pict->b_progressive;
669 frame.top_field_first = !!p_pict->b_top_field_first;
672 #if LIBAVCODEC_BUILD < 4702
673 /* Set the pts of the frame being encoded (segfaults with mpeg4!)*/
674 if( p_enc->fmt_out.i_codec == VLC_FOURCC( 'm', 'p', 'g', 'v' ) ||
675 p_enc->fmt_out.i_codec == VLC_FOURCC( 'm', 'p', '1', 'v' ) ||
676 p_enc->fmt_out.i_codec == VLC_FOURCC( 'm', 'p', '2', 'v' ) )
681 frame.pts = p_pict->date ? p_pict->date : AV_NOPTS_VALUE;
683 if ( p_sys->b_hurry_up && frame.pts != AV_NOPTS_VALUE )
685 mtime_t current_date = mdate();
687 if ( current_date + HURRY_UP_GUARD3 > frame.pts )
689 p_sys->p_context->mb_decision = FF_MB_DECISION_SIMPLE;
690 p_sys->p_context->flags &= ~CODEC_FLAG_TRELLIS_QUANT;
691 msg_Dbg( p_enc, "hurry up mode 3" );
695 p_sys->p_context->mb_decision = p_sys->i_hq;
697 if ( current_date + HURRY_UP_GUARD2 > frame.pts )
699 p_sys->p_context->flags &= ~CODEC_FLAG_TRELLIS_QUANT;
700 #if LIBAVCODEC_BUILD >= 4690
701 p_sys->p_context->noise_reduction = p_sys->i_noise_reduction
702 + (HURRY_UP_GUARD2 + current_date - frame.pts) / 500;
704 msg_Dbg( p_enc, "hurry up mode 2" );
708 if ( p_sys->b_trellis )
709 p_sys->p_context->flags |= CODEC_FLAG_TRELLIS_QUANT;
710 #if LIBAVCODEC_BUILD >= 4690
711 p_sys->p_context->noise_reduction =
712 p_sys->i_noise_reduction;
717 if ( current_date + HURRY_UP_GUARD1 > frame.pts )
719 frame.pict_type = FF_P_TYPE;
720 /* msg_Dbg( p_enc, "hurry up mode 1 %lld", current_date + HURRY_UP_GUARD1 - frame.pts ); */
726 frame.pts = AV_NOPTS_VALUE;
729 if ( frame.pts != AV_NOPTS_VALUE && frame.pts != 0 )
731 if ( p_sys->i_last_pts == frame.pts )
733 msg_Warn( p_enc, "almost fed libavcodec with two frames with the "
734 "same PTS (" I64Fd ")", frame.pts );
737 else if ( p_sys->i_last_pts > frame.pts )
739 msg_Warn( p_enc, "almost fed libavcodec with a frame in the "
740 "past (current: " I64Fd ", last: "I64Fd")",
741 frame.pts, p_sys->i_last_pts );
746 p_sys->i_last_pts = frame.pts;
750 frame.quality = p_sys->i_quality;
752 /* Ugly work-around for stupid libavcodec behaviour */
753 #if LIBAVCODEC_BUILD >= 4722
755 p_sys->pi_delay_pts[p_sys->i_framenum % MAX_FRAME_DELAY] = frame.pts;
756 frame.pts = p_sys->i_framenum * AV_TIME_BASE *
757 p_enc->fmt_in.video.i_frame_rate_base;
758 frame.pts += p_enc->fmt_in.video.i_frame_rate - 1;
759 frame.pts /= p_enc->fmt_in.video.i_frame_rate;
761 /* End work-around */
763 i_out = avcodec_encode_video( p_sys->p_context, p_sys->p_buffer_out,
764 AVCODEC_MAX_VIDEO_FRAME_SIZE, &frame );
768 block_t *p_block = block_New( p_enc, i_out );
769 memcpy( p_block->p_buffer, p_sys->p_buffer_out, i_out );
771 /* FIXME, 3-2 pulldown is not handled correctly */
772 p_block->i_length = I64C(1000000) *
773 p_enc->fmt_in.video.i_frame_rate_base /
774 p_enc->fmt_in.video.i_frame_rate;
776 if( !p_sys->p_context->max_b_frames || !p_sys->p_context->delay )
778 /* No delay -> output pts == input pts */
779 p_block->i_pts = p_block->i_dts = p_pict->date;
781 else if( p_sys->p_context->coded_frame->pts != AV_NOPTS_VALUE &&
782 p_sys->p_context->coded_frame->pts != 0 &&
783 p_sys->i_buggy_pts_detect != p_sys->p_context->coded_frame->pts )
785 p_sys->i_buggy_pts_detect = p_sys->p_context->coded_frame->pts;
786 p_block->i_pts = p_sys->p_context->coded_frame->pts;
788 /* Ugly work-around for stupid libavcodec behaviour */
789 #if LIBAVCODEC_BUILD >= 4722
791 int64_t i_framenum = p_block->i_pts *
792 p_enc->fmt_in.video.i_frame_rate /
793 p_enc->fmt_in.video.i_frame_rate_base / AV_TIME_BASE;
795 p_block->i_pts = p_sys->pi_delay_pts[i_framenum % MAX_FRAME_DELAY];
798 /* End work-around */
800 if( p_sys->p_context->coded_frame->pict_type != FF_I_TYPE &&
801 p_sys->p_context->coded_frame->pict_type != FF_P_TYPE )
803 p_block->i_dts = p_block->i_pts;
807 if( p_sys->i_last_ref_pts )
809 p_block->i_dts = p_sys->i_last_ref_pts;
813 /* Let's put something sensible */
814 p_block->i_dts = p_block->i_pts;
817 p_sys->i_last_ref_pts = p_block->i_pts;
822 /* Buggy libavcodec which doesn't update coded_frame->pts
824 p_block->i_dts = p_block->i_pts = p_pict->date;
827 switch ( p_sys->p_context->coded_frame->pict_type )
830 p_block->i_flags |= BLOCK_FLAG_TYPE_I;
833 p_block->i_flags |= BLOCK_FLAG_TYPE_P;
836 p_block->i_flags |= BLOCK_FLAG_TYPE_B;
846 /****************************************************************************
847 * EncodeAudio: the whole thing
848 ****************************************************************************/
849 static block_t *EncodeAudio( encoder_t *p_enc, aout_buffer_t *p_aout_buf )
851 encoder_sys_t *p_sys = p_enc->p_sys;
852 block_t *p_block, *p_chain = NULL;
854 char *p_buffer = p_aout_buf->p_buffer;
855 int i_samples = p_aout_buf->i_nb_samples;
856 int i_samples_delay = p_sys->i_samples_delay;
858 p_sys->i_pts = p_aout_buf->start_date -
859 (mtime_t)1000000 * (mtime_t)p_sys->i_samples_delay /
860 (mtime_t)p_enc->fmt_in.audio.i_rate;
862 p_sys->i_samples_delay += i_samples;
864 while( p_sys->i_samples_delay >= p_sys->p_context->frame_size )
869 if( i_samples_delay )
871 /* Take care of the left-over from last time */
872 int i_delay_size = i_samples_delay * 2 *
873 p_sys->p_context->channels;
874 int i_size = p_sys->i_frame_size - i_delay_size;
876 p_samples = (int16_t *)p_sys->p_buffer;
877 memcpy( p_sys->p_buffer + i_delay_size, p_buffer, i_size );
878 p_buffer -= i_delay_size;
879 i_samples += i_samples_delay;
884 p_samples = (int16_t *)p_buffer;
887 i_out = avcodec_encode_audio( p_sys->p_context, p_sys->p_buffer_out,
888 2 * AVCODEC_MAX_AUDIO_FRAME_SIZE,
892 msg_Warn( p_enc, "avcodec_encode_audio: %d", i_out );
894 if( i_out < 0 ) break;
896 p_buffer += p_sys->i_frame_size;
897 p_sys->i_samples_delay -= p_sys->p_context->frame_size;
898 i_samples -= p_sys->p_context->frame_size;
900 if( i_out == 0 ) continue;
902 p_block = block_New( p_enc, i_out );
903 memcpy( p_block->p_buffer, p_sys->p_buffer_out, i_out );
905 p_block->i_length = (mtime_t)1000000 *
906 (mtime_t)p_sys->p_context->frame_size /
907 (mtime_t)p_sys->p_context->sample_rate;
909 p_block->i_dts = p_block->i_pts = p_sys->i_pts;
912 p_sys->i_pts += p_block->i_length;
913 block_ChainAppend( &p_chain, p_block );
916 /* Backup the remaining raw samples */
919 memcpy( p_sys->p_buffer + i_samples_delay * 2 *
920 p_sys->p_context->channels, p_buffer,
921 i_samples * 2 * p_sys->p_context->channels );
927 /*****************************************************************************
928 * CloseEncoder: ffmpeg encoder destruction
929 *****************************************************************************/
930 void E_(CloseEncoder)( vlc_object_t *p_this )
932 encoder_t *p_enc = (encoder_t *)p_this;
933 encoder_sys_t *p_sys = p_enc->p_sys;
935 #if LIBAVCODEC_BUILD >= 4702
936 if ( p_sys->b_inited && p_enc->i_threads >= 1 )
939 struct thread_context_t ** pp_contexts =
940 (struct thread_context_t **)p_sys->p_context->thread_opaque;
941 for ( i = 0; i < p_enc->i_threads; i++ )
943 pp_contexts[i]->b_die = 1;
944 vlc_cond_signal( &pp_contexts[i]->cond );
945 vlc_thread_join( pp_contexts[i] );
946 vlc_mutex_destroy( &pp_contexts[i]->lock );
947 vlc_cond_destroy( &pp_contexts[i]->cond );
948 vlc_object_destroy( pp_contexts[i] );
955 avcodec_close( p_sys->p_context );
956 av_free( p_sys->p_context );
958 if( p_sys->p_buffer ) free( p_sys->p_buffer );
959 if( p_sys->p_buffer_out ) free( p_sys->p_buffer_out );