1 /*****************************************************************************
2 * encoder.c: video and audio encoder using the ffmpeg library
3 *****************************************************************************
4 * Copyright (C) 1999-2004 the VideoLAN team
7 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
8 * Gildas Bazin <gbazin@videolan.org>
9 * Christophe Massiot <massiot@via.ecp.fr>
10 * Part of the file Copyright (C) FFMPEG Project Developers
11 * (mpeg4_default matrixes)
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
26 *****************************************************************************/
28 /*****************************************************************************
30 *****************************************************************************/
35 #include <vlc_common.h>
38 #include <vlc_codec.h>
39 #include <vlc_dialog.h>
40 #include <vlc_avcodec.h>
45 #ifdef HAVE_LIBAVCODEC_AVCODEC_H
46 # include <libavcodec/avcodec.h>
47 #elif defined(HAVE_FFMPEG_AVCODEC_H)
48 # include <ffmpeg/avcodec.h>
55 #define HURRY_UP_GUARD1 (450000)
56 #define HURRY_UP_GUARD2 (300000)
57 #define HURRY_UP_GUARD3 (100000)
59 #define MAX_FRAME_DELAY (FF_MAX_B_FRAMES + 2)
61 #define RAW_AUDIO_FRAME_SIZE (2048)
63 /*****************************************************************************
65 *****************************************************************************/
66 int OpenEncoder ( vlc_object_t * );
67 void CloseEncoder( vlc_object_t * );
69 static block_t *EncodeVideo( encoder_t *, picture_t * );
70 static block_t *EncodeAudio( encoder_t *, aout_buffer_t * );
72 struct thread_context_t;
74 /*****************************************************************************
75 * thread_context_t : for multithreaded encoding
76 *****************************************************************************/
77 struct thread_context_t
81 AVCodecContext *p_context;
82 int (* pf_func)(AVCodecContext *c, void *arg);
91 /*****************************************************************************
92 * encoder_sys_t : ffmpeg encoder descriptor
93 *****************************************************************************/
100 AVCodecContext *p_context;
106 uint8_t *p_buffer_out;
112 mtime_t i_last_ref_pts;
113 mtime_t i_buggy_pts_detect;
125 /* Encoding settings */
132 int i_rc_buffer_size;
133 float f_rc_buffer_aggressivity;
136 bool b_interlace, b_interlace_me;
137 float f_i_quant_factor;
138 int i_noise_reduction;
141 int i_quality; /* for VBR */
142 float f_lumi_masking, f_dark_masking, f_p_masking, f_border_masking;
143 int i_luma_elim, i_chroma_elim;
144 int i_aac_profile; /* AAC profile to use.*/
145 /* Used to work around stupid timestamping behaviour in libavcodec */
147 mtime_t pi_delay_pts[MAX_FRAME_DELAY];
150 static const char *const ppsz_enc_options[] = {
151 "keyint", "bframes", "vt", "qmin", "qmax", "hq",
152 "rc-buffer-size", "rc-buffer-aggressivity", "pre-me", "hurry-up",
153 "interlace", "interlace-me", "i-quant-factor", "noise-reduction", "mpeg4-matrix",
154 "trellis", "qscale", "strict", "lumi-masking", "dark-masking",
155 "p-masking", "border-masking", "luma-elim-threshold",
156 "chroma-elim-threshold",
161 static const uint16_t mpa_bitrate_tab[2][15] =
163 {0, 32, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384},
164 {0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160}
167 static const uint16_t mpa_freq_tab[6] =
168 { 44100, 48000, 32000, 22050, 24000, 16000 };
170 static const uint16_t mpeg4_default_intra_matrix[64] = {
171 8, 17, 18, 19, 21, 23, 25, 27,
172 17, 18, 19, 21, 23, 25, 27, 28,
173 20, 21, 22, 23, 24, 26, 28, 30,
174 21, 22, 23, 24, 26, 28, 30, 32,
175 22, 23, 24, 26, 28, 30, 32, 35,
176 23, 24, 26, 28, 30, 32, 35, 38,
177 25, 26, 28, 30, 32, 35, 38, 41,
178 27, 28, 30, 32, 35, 38, 41, 45,
181 static const uint16_t mpeg4_default_non_intra_matrix[64] = {
182 16, 17, 18, 19, 20, 21, 22, 23,
183 17, 18, 19, 20, 21, 22, 23, 24,
184 18, 19, 20, 21, 22, 23, 24, 25,
185 19, 20, 21, 22, 23, 24, 26, 27,
186 20, 21, 22, 23, 25, 26, 27, 28,
187 21, 22, 23, 24, 26, 27, 28, 30,
188 22, 23, 24, 26, 27, 28, 30, 31,
189 23, 24, 25, 27, 28, 30, 31, 33,
192 /*****************************************************************************
193 * OpenEncoder: probe the encoder
194 *****************************************************************************/
196 int OpenEncoder( vlc_object_t *p_this )
198 encoder_t *p_enc = (encoder_t *)p_this;
199 encoder_sys_t *p_sys;
200 AVCodecContext *p_context;
202 int i_codec_id, i_cat;
203 const char *psz_namecodec;
208 if( !GetFfmpegCodec( p_enc->fmt_out.i_codec, &i_cat, &i_codec_id,
211 if( TestFfmpegChroma( -1, p_enc->fmt_out.i_codec ) != VLC_SUCCESS )
213 /* handed chroma output */
217 i_codec_id = CODEC_ID_RAWVIDEO;
218 psz_namecodec = "Raw video";
221 if( p_enc->fmt_out.i_cat == VIDEO_ES && i_cat != VIDEO_ES )
223 msg_Err( p_enc, "\"%s\" is not a video encoder", psz_namecodec );
224 dialog_Fatal( p_enc, _("Streaming / Transcoding failed"),
225 _("\"%s\" is no video encoder."), psz_namecodec );
229 if( p_enc->fmt_out.i_cat == AUDIO_ES && i_cat != AUDIO_ES )
231 msg_Err( p_enc, "\"%s\" is not an audio encoder", psz_namecodec );
232 dialog_Fatal( p_enc, _("Streaming / Transcoding failed"),
233 _("\"%s\" is no audio encoder."), psz_namecodec );
237 if( p_enc->fmt_out.i_cat == SPU_ES )
239 /* We don't support subtitle encoding */
243 /* Initialization must be done before avcodec_find_encoder() */
244 InitLibavcodec( p_this );
246 p_codec = avcodec_find_encoder( i_codec_id );
249 msg_Err( p_enc, "cannot find encoder %s\n"
250 "*** Your FFMPEG installation is crippled. ***\n"
251 "*** Please check with your FFMPEG packager. ***\n"
252 "*** This is NOT a VLC media player issue. ***", psz_namecodec );
254 dialog_Fatal( p_enc, _("Streaming / Transcoding failed"), _(
255 /* I have had enough of all these MPEG-3 transcoding bug reports.
256 * Downstream packager, you had better not patch this out, or I will be really
257 * annoyed. Think about it - you don't want to fork the VLC translation files,
258 * do you? -- Courmisch, 2008-10-22 */
259 "It seems your FFMPEG (libavcodec) installation lacks the following encoder:\n"
261 "If you don't know how to fix this, ask for support from your distribution.\n"
263 "This is not an error inside VLC media player.\n"
264 "Do not contact the VideoLAN project about this issue.\n"),
269 /* Allocate the memory needed to store the encoder's structure */
270 if( ( p_sys = calloc( 1, sizeof(encoder_sys_t) ) ) == NULL )
272 p_enc->p_sys = p_sys;
273 p_sys->p_codec = p_codec;
275 p_enc->pf_encode_video = EncodeVideo;
276 p_enc->pf_encode_audio = EncodeAudio;
278 p_sys->p_buffer = NULL;
279 p_sys->p_buffer_out = NULL;
280 p_sys->i_buffer_out = 0;
282 p_sys->p_context = p_context = avcodec_alloc_context();
283 p_sys->p_context->codec_id = p_sys->p_codec->id;
284 p_context->debug = var_InheritInteger( p_enc, "ffmpeg-debug" );
285 p_context->opaque = (void *)p_this;
287 /* Set CPU capabilities */
288 unsigned i_cpu = vlc_CPU();
289 p_context->dsp_mask = 0;
290 if( !(i_cpu & CPU_CAPABILITY_MMX) )
292 p_context->dsp_mask |= FF_MM_MMX;
294 if( !(i_cpu & CPU_CAPABILITY_MMXEXT) )
296 p_context->dsp_mask |= FF_MM_MMXEXT;
298 if( !(i_cpu & CPU_CAPABILITY_3DNOW) )
300 p_context->dsp_mask |= FF_MM_3DNOW;
302 if( !(i_cpu & CPU_CAPABILITY_SSE) )
304 p_context->dsp_mask |= FF_MM_SSE;
305 p_context->dsp_mask |= FF_MM_SSE2;
308 config_ChainParse( p_enc, ENC_CFG_PREFIX, ppsz_enc_options, p_enc->p_cfg );
310 p_sys->i_key_int = var_GetInteger( p_enc, ENC_CFG_PREFIX "keyint" );
311 p_sys->i_b_frames = var_GetInteger( p_enc, ENC_CFG_PREFIX "bframes" );
312 p_sys->i_vtolerance = var_GetInteger( p_enc, ENC_CFG_PREFIX "vt" ) * 1000;
313 p_sys->b_interlace = var_GetBool( p_enc, ENC_CFG_PREFIX "interlace" );
314 p_sys->b_interlace_me = var_GetBool( p_enc, ENC_CFG_PREFIX "interlace-me" );
315 p_sys->b_pre_me = var_GetBool( p_enc, ENC_CFG_PREFIX "pre-me" );
316 p_sys->b_hurry_up = var_GetBool( p_enc, ENC_CFG_PREFIX "hurry-up" );
318 if( p_sys->b_hurry_up )
320 /* hurry up mode needs noise reduction, even small */
321 p_sys->i_noise_reduction = 1;
324 p_sys->i_rc_buffer_size = var_GetInteger( p_enc, ENC_CFG_PREFIX "rc-buffer-size" );
325 p_sys->f_rc_buffer_aggressivity = var_GetFloat( p_enc, ENC_CFG_PREFIX "rc-buffer-aggressivity" );
326 p_sys->f_i_quant_factor = var_GetFloat( p_enc, ENC_CFG_PREFIX "i-quant-factor" );
327 p_sys->i_noise_reduction = var_GetInteger( p_enc, ENC_CFG_PREFIX "noise-reduction" );
328 p_sys->b_mpeg4_matrix = var_GetBool( p_enc, ENC_CFG_PREFIX "mpeg4-matrix" );
330 f_val = var_GetFloat( p_enc, ENC_CFG_PREFIX "qscale" );
331 if( f_val < 0.01 || f_val > 255.0 ) f_val = 0;
332 p_sys->i_quality = (int)(FF_QP2LAMBDA * f_val + 0.5);
334 psz_val = var_GetString( p_enc, ENC_CFG_PREFIX "hq" );
335 p_sys->i_hq = FF_MB_DECISION_RD;
336 if( psz_val && *psz_val )
338 if( !strcmp( psz_val, "rd" ) )
339 p_sys->i_hq = FF_MB_DECISION_RD;
340 else if( !strcmp( psz_val, "bits" ) )
341 p_sys->i_hq = FF_MB_DECISION_BITS;
342 else if( !strcmp( psz_val, "simple" ) )
343 p_sys->i_hq = FF_MB_DECISION_SIMPLE;
345 p_sys->i_hq = FF_MB_DECISION_RD;
348 p_sys->i_hq = FF_MB_DECISION_RD;
351 p_sys->i_qmin = var_GetInteger( p_enc, ENC_CFG_PREFIX "qmin" );
352 p_sys->i_qmax = var_GetInteger( p_enc, ENC_CFG_PREFIX "qmax" );
353 p_sys->b_trellis = var_GetBool( p_enc, ENC_CFG_PREFIX "trellis" );
355 i_val = var_GetInteger( p_enc, ENC_CFG_PREFIX "strict" );
356 if( i_val < - 1 || i_val > 1 ) i_val = 0;
357 p_context->strict_std_compliance = i_val;
359 p_sys->f_lumi_masking = var_GetFloat( p_enc, ENC_CFG_PREFIX "lumi-masking" );
360 p_sys->f_dark_masking = var_GetFloat( p_enc, ENC_CFG_PREFIX "dark-masking" );
361 p_sys->f_p_masking = var_GetFloat( p_enc, ENC_CFG_PREFIX "p-masking" );
362 p_sys->f_border_masking = var_GetFloat( p_enc, ENC_CFG_PREFIX "border-masking" );
363 p_sys->i_luma_elim = var_GetInteger( p_enc, ENC_CFG_PREFIX "luma-elim-threshold" );
364 p_sys->i_chroma_elim = var_GetInteger( p_enc, ENC_CFG_PREFIX "chroma-elim-threshold" );
366 psz_val = var_GetString( p_enc, ENC_CFG_PREFIX "aac-profile" );
367 /* ffmpeg uses faac encoder atm, and it has issues with
368 * other than low-complexity profile, so default to that */
369 p_sys->i_aac_profile = FF_PROFILE_AAC_LOW;
370 if( psz_val && *psz_val )
372 if( !strncmp( psz_val, "main", 4 ) )
373 p_sys->i_aac_profile = FF_PROFILE_AAC_MAIN;
374 else if( !strncmp( psz_val, "low", 3 ) )
375 p_sys->i_aac_profile = FF_PROFILE_AAC_LOW;
376 #if 0 /* Not supported by FAAC encoder */
377 else if( !strncmp( psz_val, "ssr", 3 ) )
378 p_sys->i_aac_profile = FF_PROFILE_AAC_SSR;
380 else if( !strncmp( psz_val, "ltp", 3 ) )
381 p_sys->i_aac_profile = FF_PROFILE_AAC_LTP;
384 msg_Warn( p_enc, "unknown AAC profile requested, setting it to low" );
385 p_sys->i_aac_profile = FF_PROFILE_AAC_LOW;
390 if( p_enc->fmt_in.i_cat == VIDEO_ES )
392 if( !p_enc->fmt_in.video.i_width || !p_enc->fmt_in.video.i_height )
394 msg_Warn( p_enc, "invalid size %ix%i", p_enc->fmt_in.video.i_width,
395 p_enc->fmt_in.video.i_height );
400 p_context->codec_type = CODEC_TYPE_VIDEO;
402 p_context->width = p_enc->fmt_in.video.i_width;
403 p_context->height = p_enc->fmt_in.video.i_height;
405 p_context->time_base.num = p_enc->fmt_in.video.i_frame_rate_base;
406 p_context->time_base.den = p_enc->fmt_in.video.i_frame_rate;
408 /* Defaults from ffmpeg.c */
409 p_context->qblur = 0.5;
410 p_context->qcompress = 0.5;
411 p_context->b_quant_offset = 1.25;
412 p_context->b_quant_factor = 1.25;
413 p_context->i_quant_offset = 0.0;
414 p_context->i_quant_factor = -0.8;
416 p_context->lumi_masking = p_sys->f_lumi_masking;
417 p_context->dark_masking = p_sys->f_dark_masking;
418 p_context->p_masking = p_sys->f_p_masking;
419 p_context->border_masking = p_sys->f_border_masking;
420 p_context->luma_elim_threshold = p_sys->i_luma_elim;
421 p_context->chroma_elim_threshold = p_sys->i_chroma_elim;
423 if( p_sys->i_key_int > 0 )
424 p_context->gop_size = p_sys->i_key_int;
425 p_context->max_b_frames =
426 __MAX( __MIN( p_sys->i_b_frames, FF_MAX_B_FRAMES ), 0 );
427 p_context->b_frame_strategy = 0;
428 if( !p_context->max_b_frames &&
429 ( p_enc->fmt_out.i_codec == VLC_CODEC_MPGV ||
430 p_enc->fmt_out.i_codec == VLC_CODEC_MP2V ||
431 p_enc->fmt_out.i_codec == VLC_CODEC_MP1V ) )
432 p_context->flags |= CODEC_FLAG_LOW_DELAY;
434 av_reduce( &p_context->sample_aspect_ratio.num,
435 &p_context->sample_aspect_ratio.den,
436 p_enc->fmt_in.video.i_sar_num,
437 p_enc->fmt_in.video.i_sar_den, 1 << 30 );
439 p_sys->i_buffer_out = p_context->height * p_context->width
440 * 3 /* Assume 24bpp maximum */
441 + 200; /* some room for potential headers (such as BMP) */
443 if( p_sys->i_buffer_out < FF_MIN_BUFFER_SIZE )
444 p_sys->i_buffer_out = FF_MIN_BUFFER_SIZE;
445 p_sys->p_buffer_out = malloc( p_sys->i_buffer_out );
447 p_enc->fmt_in.i_codec = VLC_CODEC_I420;
448 p_enc->fmt_in.video.i_chroma = p_enc->fmt_in.i_codec;
449 GetFfmpegChroma( &p_context->pix_fmt, p_enc->fmt_in.video );
451 if( p_codec->pix_fmts )
453 const enum PixelFormat *p = p_codec->pix_fmts;
454 for( ; *p != -1; p++ )
456 if( *p == p_context->pix_fmt ) break;
458 if( *p == -1 ) p_context->pix_fmt = p_codec->pix_fmts[0];
459 GetVlcChroma( &p_enc->fmt_in.video, p_context->pix_fmt );
460 p_enc->fmt_in.i_codec = p_enc->fmt_in.video.i_chroma;
464 if ( p_sys->f_i_quant_factor != 0.0 )
465 p_context->i_quant_factor = p_sys->f_i_quant_factor;
467 p_context->noise_reduction = p_sys->i_noise_reduction;
469 if ( p_sys->b_mpeg4_matrix )
471 p_context->intra_matrix = mpeg4_default_intra_matrix;
472 p_context->inter_matrix = mpeg4_default_non_intra_matrix;
475 if ( p_sys->b_pre_me )
477 p_context->pre_me = 1;
478 p_context->me_pre_cmp = FF_CMP_CHROMA;
481 if ( p_sys->b_interlace )
483 if ( p_context->height <= 280 )
485 if ( p_context->height != 16 || p_context->width != 16 )
487 "disabling interlaced video because height=%d <= 280",
492 p_context->flags |= CODEC_FLAG_INTERLACED_DCT;
493 if ( p_sys->b_interlace_me )
494 p_context->flags |= CODEC_FLAG_INTERLACED_ME;
498 p_context->trellis = p_sys->b_trellis;
500 if ( p_sys->i_qmin > 0 && p_sys->i_qmin == p_sys->i_qmax )
501 p_context->flags |= CODEC_FLAG_QSCALE;
502 /* These codecs cause libavcodec to exit if thread_count is > 1.
503 See libavcodec/mpegvideo_enc.c:MPV_encode_init
505 if ( i_codec_id == CODEC_ID_FLV1 ||
506 i_codec_id == CODEC_ID_H261 ||
507 i_codec_id == CODEC_ID_LJPEG ||
508 i_codec_id == CODEC_ID_MJPEG ||
509 i_codec_id == CODEC_ID_H263 ||
510 i_codec_id == CODEC_ID_H263P ||
511 i_codec_id == CODEC_ID_MSMPEG4V1 ||
512 i_codec_id == CODEC_ID_MSMPEG4V2 ||
513 i_codec_id == CODEC_ID_MSMPEG4V3 ||
514 i_codec_id == CODEC_ID_WMV1 ||
515 i_codec_id == CODEC_ID_RV10 ||
516 i_codec_id == CODEC_ID_RV20 ||
517 i_codec_id == CODEC_ID_SVQ3 )
518 p_enc->i_threads = 1;
520 if ( p_enc->i_threads >= 1 )
521 avcodec_thread_init( p_context, p_enc->i_threads );
523 avcodec_thread_init( p_context, vlc_GetCPUCount() );
525 if( p_sys->i_vtolerance > 0 )
526 p_context->bit_rate_tolerance = p_sys->i_vtolerance;
528 /* usually if someone sets bitrate, he likes more to get that bitrate
529 * over quality should help 'normal' user to get asked bitrate
531 if( p_enc->fmt_out.i_bitrate > 0 && p_sys->i_qmax == 0 && p_sys->i_qmin == 0 )
537 if( p_sys->i_qmin > 0 )
539 p_context->mb_qmin = p_context->qmin = p_sys->i_qmin;
540 p_context->mb_lmin = p_context->lmin = p_sys->i_qmin * FF_QP2LAMBDA;
542 if( p_sys->i_qmax > 0 )
544 p_context->mb_qmax = p_context->qmax = p_sys->i_qmax;
545 p_context->mb_lmax = p_context->lmax = p_sys->i_qmax * FF_QP2LAMBDA;
547 p_context->max_qdiff = 3;
549 p_context->mb_decision = p_sys->i_hq;
551 if( p_sys->i_quality )
553 p_context->flags |= CODEC_FLAG_QSCALE;
554 p_context->global_quality = p_sys->i_quality;
558 p_context->rc_qsquish = 1.0;
559 p_context->rc_max_rate = p_enc->fmt_out.i_bitrate;
560 p_context->rc_min_rate = p_enc->fmt_out.i_bitrate;
561 p_context->rc_buffer_size = p_sys->i_rc_buffer_size;
562 /* This is from ffmpeg's ffmpeg.c : */
563 p_context->rc_initial_buffer_occupancy
564 = p_sys->i_rc_buffer_size * 3/4;
565 p_context->rc_buffer_aggressivity = p_sys->f_rc_buffer_aggressivity;
568 else if( p_enc->fmt_in.i_cat == AUDIO_ES )
570 /* work around bug in libmp3lame encoding */
571 if( i_codec_id == CODEC_ID_MP3 && p_enc->fmt_in.audio.i_channels > 2 )
572 p_enc->fmt_in.audio.i_channels = 2;
574 p_context->codec_type = CODEC_TYPE_AUDIO;
575 p_context->sample_fmt = p_codec->sample_fmts ?
576 p_codec->sample_fmts[0] :
578 p_enc->fmt_in.i_codec = VLC_CODEC_S16N;
579 p_context->sample_rate = p_enc->fmt_out.audio.i_rate;
580 p_context->channels = p_enc->fmt_out.audio.i_channels;
582 if ( p_enc->fmt_out.i_codec == VLC_CODEC_MP4A )
584 /* XXX: FAAC does resample only when setting the INPUT samplerate
585 * to the desired value (-R option of the faac frontend)
586 p_enc->fmt_in.audio.i_rate = p_context->sample_rate;*/
587 /* vlc should default to low-complexity profile, faac encoder
588 * has bug and aac audio has issues otherwise atm */
589 p_context->profile = p_sys->i_aac_profile;
593 /* Misc parameters */
594 p_context->bit_rate = p_enc->fmt_out.i_bitrate;
596 if( i_codec_id == CODEC_ID_RAWVIDEO )
598 /* XXX: hack: Force same codec (will be handled by transcode) */
599 p_enc->fmt_in.video.i_chroma = p_enc->fmt_in.i_codec = p_enc->fmt_out.i_codec;
600 GetFfmpegChroma( &p_context->pix_fmt, p_enc->fmt_in.video );
603 /* Make sure we get extradata filled by the encoder */
604 p_context->extradata_size = 0;
605 p_context->extradata = NULL;
606 p_context->flags |= CODEC_FLAG_GLOBAL_HEADER;
610 ret = avcodec_open( p_context, p_codec );
611 vlc_avcodec_unlock();
614 if( p_enc->fmt_in.i_cat == AUDIO_ES &&
615 (p_context->channels > 2 || i_codec_id == CODEC_ID_MP2
616 || i_codec_id == CODEC_ID_MP3) )
618 if( p_context->channels > 2 )
620 p_context->channels = 2;
621 p_enc->fmt_in.audio.i_channels = 2; // FIXME
622 msg_Warn( p_enc, "stereo mode selected (codec limitation)" );
625 if( i_codec_id == CODEC_ID_MP2 || i_codec_id == CODEC_ID_MP3 )
629 for ( i_frequency = 0; i_frequency < 6; i_frequency++ )
631 if ( p_enc->fmt_out.audio.i_rate
632 == mpa_freq_tab[i_frequency] )
635 if ( i_frequency == 6 )
637 msg_Err( p_enc, "MPEG audio doesn't support frequency=%d",
638 p_enc->fmt_out.audio.i_rate );
643 for ( i = 1; i < 14; i++ )
645 if ( p_enc->fmt_out.i_bitrate / 1000
646 <= mpa_bitrate_tab[i_frequency / 3][i] )
649 if ( p_enc->fmt_out.i_bitrate / 1000
650 != mpa_bitrate_tab[i_frequency / 3][i] )
653 "MPEG audio doesn't support bitrate=%d, using %d",
654 p_enc->fmt_out.i_bitrate,
655 mpa_bitrate_tab[i_frequency / 3][i] * 1000 );
656 p_enc->fmt_out.i_bitrate =
657 mpa_bitrate_tab[i_frequency / 3][i] * 1000;
658 p_context->bit_rate = p_enc->fmt_out.i_bitrate;
662 p_context->codec = NULL;
664 ret = avcodec_open( p_context, p_codec );
665 vlc_avcodec_unlock();
668 msg_Err( p_enc, "cannot open encoder" );
670 _("Streaming / Transcoding failed"),
671 "%s", _("VLC could not open the encoder.") );
678 msg_Err( p_enc, "cannot open encoder" );
679 dialog_Fatal( p_enc, _("Streaming / Transcoding failed"),
680 "%s", _("VLC could not open the encoder.") );
686 if( i_codec_id == CODEC_ID_FLAC )
688 p_enc->fmt_out.i_extra = 4 + 1 + 3 + p_context->extradata_size;
689 p_enc->fmt_out.p_extra = malloc( p_enc->fmt_out.i_extra );
690 if( p_enc->fmt_out.p_extra )
692 uint8_t *p = p_enc->fmt_out.p_extra;
697 p[4] = 0x80; /* streaminfo block, last block before audio */
698 p[5] = ( p_context->extradata_size >> 16 ) & 0xff;
699 p[6] = ( p_context->extradata_size >> 8 ) & 0xff;
700 p[7] = ( p_context->extradata_size ) & 0xff;
701 memcpy( &p[8], p_context->extradata, p_context->extradata_size );
705 p_enc->fmt_out.i_extra = 0;
710 p_enc->fmt_out.i_extra = p_context->extradata_size;
711 if( p_enc->fmt_out.i_extra )
713 p_enc->fmt_out.p_extra = malloc( p_enc->fmt_out.i_extra );
714 memcpy( p_enc->fmt_out.p_extra, p_context->extradata,
715 p_enc->fmt_out.i_extra );
719 p_context->flags &= ~CODEC_FLAG_GLOBAL_HEADER;
721 if( p_enc->fmt_in.i_cat == AUDIO_ES )
723 GetVlcAudioFormat( &p_enc->fmt_in.i_codec,
724 &p_enc->fmt_in.audio.i_bitspersample,
725 p_sys->p_context->sample_fmt );
726 p_sys->i_sample_bytes = (p_enc->fmt_in.audio.i_bitspersample / 8) *
728 p_sys->i_frame_size = p_context->frame_size > 1 ?
729 p_context->frame_size :
730 RAW_AUDIO_FRAME_SIZE;
731 p_sys->p_buffer = malloc( p_sys->i_frame_size * p_sys->i_sample_bytes );
732 p_enc->fmt_out.audio.i_blockalign = p_context->block_align;
733 p_enc->fmt_out.audio.i_bitspersample = aout_BitsPerSample( vlc_fourcc_GetCodec( AUDIO_ES, p_enc->fmt_out.i_codec ) );
735 if( p_context->frame_size > 1 )
736 p_sys->i_buffer_out = 8 * AVCODEC_MAX_AUDIO_FRAME_SIZE;
738 p_sys->i_buffer_out = p_sys->i_frame_size * p_sys->i_sample_bytes;
739 p_sys->p_buffer_out = malloc( p_sys->i_buffer_out );
742 msg_Dbg( p_enc, "found encoder %s", psz_namecodec );
747 /****************************************************************************
748 * EncodeVideo: the whole thing
749 ****************************************************************************/
750 static block_t *EncodeVideo( encoder_t *p_enc, picture_t *p_pict )
752 encoder_sys_t *p_sys = p_enc->p_sys;
757 memset( &frame, 0, sizeof( AVFrame ) );
758 if( likely(p_pict) ) {
759 for( i_plane = 0; i_plane < p_pict->i_planes; i_plane++ )
761 frame.data[i_plane] = p_pict->p[i_plane].p_pixels;
762 frame.linesize[i_plane] = p_pict->p[i_plane].i_pitch;
765 /* Let ffmpeg select the frame type */
768 frame.repeat_pict = p_pict->i_nb_fields - 2;
769 frame.interlaced_frame = !p_pict->b_progressive;
770 frame.top_field_first = !!p_pict->b_top_field_first;
772 /* Set the pts of the frame being encoded (segfaults with mpeg4!)*/
773 if( p_enc->fmt_out.i_codec != VLC_CODEC_MP4V )
775 frame.pts = p_pict->date ? p_pict->date : (int64_t)AV_NOPTS_VALUE;
777 if ( p_sys->b_hurry_up && frame.pts != (int64_t)AV_NOPTS_VALUE )
779 mtime_t current_date = mdate();
781 if ( current_date + HURRY_UP_GUARD3 > frame.pts )
783 p_sys->p_context->mb_decision = FF_MB_DECISION_SIMPLE;
784 p_sys->p_context->trellis = 0;
785 msg_Dbg( p_enc, "hurry up mode 3" );
789 p_sys->p_context->mb_decision = p_sys->i_hq;
791 if ( current_date + HURRY_UP_GUARD2 > frame.pts )
793 p_sys->p_context->trellis = 0;
794 p_sys->p_context->noise_reduction = p_sys->i_noise_reduction
795 + (HURRY_UP_GUARD2 + current_date - frame.pts) / 500;
796 msg_Dbg( p_enc, "hurry up mode 2" );
800 p_sys->p_context->trellis = p_sys->b_trellis;
802 p_sys->p_context->noise_reduction =
803 p_sys->i_noise_reduction;
807 if ( current_date + HURRY_UP_GUARD1 > frame.pts )
809 frame.pict_type = FF_P_TYPE;
810 /* msg_Dbg( p_enc, "hurry up mode 1 %lld", current_date + HURRY_UP_GUARD1 - frame.pts ); */
816 frame.pts = (int64_t)AV_NOPTS_VALUE;
819 if ( frame.pts != (int64_t)AV_NOPTS_VALUE && frame.pts != 0 )
821 if ( p_sys->i_last_pts == frame.pts )
823 msg_Warn( p_enc, "almost fed libavcodec with two frames with the "
824 "same PTS (%"PRId64 ")", frame.pts );
827 else if ( p_sys->i_last_pts > frame.pts )
829 msg_Warn( p_enc, "almost fed libavcodec with a frame in the "
830 "past (current: %"PRId64 ", last: %"PRId64")",
831 frame.pts, p_sys->i_last_pts );
836 p_sys->i_last_pts = frame.pts;
840 frame.quality = p_sys->i_quality;
842 /* Ugly work-around for stupid libavcodec behaviour */
844 p_sys->pi_delay_pts[p_sys->i_framenum % MAX_FRAME_DELAY] = frame.pts;
845 frame.pts = p_sys->i_framenum * AV_TIME_BASE *
846 p_enc->fmt_in.video.i_frame_rate_base;
847 frame.pts += p_enc->fmt_in.video.i_frame_rate - 1;
848 frame.pts /= p_enc->fmt_in.video.i_frame_rate;
849 /* End work-around */
851 i_out = avcodec_encode_video( p_sys->p_context, p_sys->p_buffer_out,
852 p_sys->i_buffer_out, &frame );
856 i_out = avcodec_encode_video( p_sys->p_context, p_sys->p_buffer_out,
857 p_sys->i_buffer_out, NULL);
862 block_t *p_block = block_New( p_enc, i_out );
863 memcpy( p_block->p_buffer, p_sys->p_buffer_out, i_out );
865 /* FIXME, 3-2 pulldown is not handled correctly */
866 p_block->i_length = INT64_C(1000000) *
867 p_enc->fmt_in.video.i_frame_rate_base /
868 p_enc->fmt_in.video.i_frame_rate;
870 if( !p_sys->p_context->max_b_frames || !p_sys->p_context->delay )
872 /* No delay -> output pts == input pts */
873 p_block->i_pts = p_block->i_dts = p_pict->date;
875 else if( p_sys->p_context->coded_frame->pts != (int64_t)AV_NOPTS_VALUE &&
876 p_sys->p_context->coded_frame->pts != 0 &&
877 p_sys->i_buggy_pts_detect != p_sys->p_context->coded_frame->pts )
879 p_sys->i_buggy_pts_detect = p_sys->p_context->coded_frame->pts;
880 p_block->i_pts = p_sys->p_context->coded_frame->pts;
882 /* Ugly work-around for stupid libavcodec behaviour */
884 int64_t i_framenum = p_block->i_pts *
885 p_enc->fmt_in.video.i_frame_rate /
886 p_enc->fmt_in.video.i_frame_rate_base / AV_TIME_BASE;
888 p_block->i_pts = p_sys->pi_delay_pts[i_framenum % MAX_FRAME_DELAY];
890 /* End work-around */
892 if( p_sys->p_context->coded_frame->pict_type != FF_I_TYPE &&
893 p_sys->p_context->coded_frame->pict_type != FF_P_TYPE )
895 p_block->i_dts = p_block->i_pts;
899 if( p_sys->i_last_ref_pts )
901 p_block->i_dts = p_sys->i_last_ref_pts;
905 /* Let's put something sensible */
906 p_block->i_dts = p_block->i_pts;
909 p_sys->i_last_ref_pts = p_block->i_pts;
914 /* Buggy libavcodec which doesn't update coded_frame->pts
916 p_block->i_dts = p_block->i_pts = p_pict->date;
919 switch ( p_sys->p_context->coded_frame->pict_type )
922 p_block->i_flags |= BLOCK_FLAG_TYPE_I;
925 p_block->i_flags |= BLOCK_FLAG_TYPE_P;
928 p_block->i_flags |= BLOCK_FLAG_TYPE_B;
938 /****************************************************************************
939 * EncodeAudio: the whole thing
940 ****************************************************************************/
941 static block_t *EncodeAudio( encoder_t *p_enc, aout_buffer_t *p_aout_buf )
943 encoder_sys_t *p_sys = p_enc->p_sys;
945 block_t *p_block, *p_chain = NULL;
947 uint8_t *p_buffer = p_aout_buf->p_buffer;
948 int i_samples = p_aout_buf->i_nb_samples;
949 int i_samples_delay = p_sys->i_samples_delay;
951 p_sys->i_pts = p_aout_buf->i_pts -
952 (mtime_t)1000000 * (mtime_t)p_sys->i_samples_delay /
953 (mtime_t)p_enc->fmt_in.audio.i_rate;
955 p_sys->i_samples_delay += i_samples;
957 while( p_sys->i_samples_delay >= p_sys->i_frame_size )
962 if( i_samples_delay )
964 /* Take care of the left-over from last time */
965 int i_delay_size = i_samples_delay;
966 int i_size = (p_sys->i_frame_size - i_delay_size) *
967 p_sys->i_sample_bytes;
969 memcpy( p_sys->p_buffer + i_delay_size * p_sys->i_sample_bytes,
971 p_buffer -= i_delay_size * p_sys->i_sample_bytes;
972 i_samples += i_samples_delay;
975 p_samples = p_sys->p_buffer;
979 p_samples = p_buffer;
982 i_out = avcodec_encode_audio( p_sys->p_context, p_sys->p_buffer_out,
983 p_sys->i_buffer_out, p_samples );
986 msg_Warn( p_enc, "avcodec_encode_audio: %d", i_out );
988 p_buffer += p_sys->i_frame_size * p_sys->i_sample_bytes;
989 p_sys->i_samples_delay -= p_sys->i_frame_size;
990 i_samples -= p_sys->i_frame_size;
995 p_block = block_New( p_enc, i_out );
996 memcpy( p_block->p_buffer, p_sys->p_buffer_out, i_out );
998 p_block->i_length = (mtime_t)1000000 *
999 (mtime_t)p_sys->i_frame_size /
1000 (mtime_t)p_sys->p_context->sample_rate;
1002 p_block->i_dts = p_block->i_pts = p_sys->i_pts;
1005 p_sys->i_pts += p_block->i_length;
1006 block_ChainAppend( &p_chain, p_block );
1009 /* Backup the remaining raw samples */
1012 memcpy( &p_sys->p_buffer[i_samples_delay * p_sys->i_sample_bytes],
1014 i_samples * p_sys->i_sample_bytes );
1020 /*****************************************************************************
1021 * CloseEncoder: ffmpeg encoder destruction
1022 *****************************************************************************/
1023 void CloseEncoder( vlc_object_t *p_this )
1025 encoder_t *p_enc = (encoder_t *)p_this;
1026 encoder_sys_t *p_sys = p_enc->p_sys;
1029 avcodec_close( p_sys->p_context );
1030 vlc_avcodec_unlock();
1031 av_free( p_sys->p_context );
1033 free( p_sys->p_buffer );
1034 free( p_sys->p_buffer_out );