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 and
504 libavcodec/svq3.c , WMV2 calls MPV_encode_init also.
506 if ( i_codec_id == CODEC_ID_FLV1 ||
507 i_codec_id == CODEC_ID_H261 ||
508 i_codec_id == CODEC_ID_LJPEG ||
509 i_codec_id == CODEC_ID_MJPEG ||
510 i_codec_id == CODEC_ID_H263 ||
511 i_codec_id == CODEC_ID_H263P ||
512 i_codec_id == CODEC_ID_MSMPEG4V1 ||
513 i_codec_id == CODEC_ID_MSMPEG4V2 ||
514 i_codec_id == CODEC_ID_MSMPEG4V3 ||
515 i_codec_id == CODEC_ID_WMV1 ||
516 i_codec_id == CODEC_ID_WMV2 ||
517 i_codec_id == CODEC_ID_RV10 ||
518 i_codec_id == CODEC_ID_RV20 ||
519 i_codec_id == CODEC_ID_SVQ3 )
520 p_enc->i_threads = 1;
522 if ( p_enc->i_threads >= 1 )
523 avcodec_thread_init( p_context, p_enc->i_threads );
525 avcodec_thread_init( p_context, vlc_GetCPUCount() );
527 if( p_sys->i_vtolerance > 0 )
528 p_context->bit_rate_tolerance = p_sys->i_vtolerance;
530 /* usually if someone sets bitrate, he likes more to get that bitrate
531 * over quality should help 'normal' user to get asked bitrate
533 if( p_enc->fmt_out.i_bitrate > 0 && p_sys->i_qmax == 0 && p_sys->i_qmin == 0 )
539 if( p_sys->i_qmin > 0 )
541 p_context->mb_qmin = p_context->qmin = p_sys->i_qmin;
542 p_context->mb_lmin = p_context->lmin = p_sys->i_qmin * FF_QP2LAMBDA;
544 if( p_sys->i_qmax > 0 )
546 p_context->mb_qmax = p_context->qmax = p_sys->i_qmax;
547 p_context->mb_lmax = p_context->lmax = p_sys->i_qmax * FF_QP2LAMBDA;
549 p_context->max_qdiff = 3;
551 p_context->mb_decision = p_sys->i_hq;
553 if( p_sys->i_quality )
555 p_context->flags |= CODEC_FLAG_QSCALE;
556 p_context->global_quality = p_sys->i_quality;
560 p_context->rc_qsquish = 1.0;
561 p_context->rc_max_rate = p_enc->fmt_out.i_bitrate;
562 p_context->rc_min_rate = p_enc->fmt_out.i_bitrate;
563 p_context->rc_buffer_size = p_sys->i_rc_buffer_size;
564 /* This is from ffmpeg's ffmpeg.c : */
565 p_context->rc_initial_buffer_occupancy
566 = p_sys->i_rc_buffer_size * 3/4;
567 p_context->rc_buffer_aggressivity = p_sys->f_rc_buffer_aggressivity;
570 else if( p_enc->fmt_in.i_cat == AUDIO_ES )
572 /* work around bug in libmp3lame encoding */
573 if( i_codec_id == CODEC_ID_MP3 && p_enc->fmt_in.audio.i_channels > 2 )
574 p_enc->fmt_in.audio.i_channels = 2;
576 p_context->codec_type = CODEC_TYPE_AUDIO;
577 p_context->sample_fmt = p_codec->sample_fmts ?
578 p_codec->sample_fmts[0] :
580 p_enc->fmt_in.i_codec = VLC_CODEC_S16N;
581 p_context->sample_rate = p_enc->fmt_out.audio.i_rate;
582 p_context->channels = p_enc->fmt_out.audio.i_channels;
584 if ( p_enc->fmt_out.i_codec == VLC_CODEC_MP4A )
586 /* XXX: FAAC does resample only when setting the INPUT samplerate
587 * to the desired value (-R option of the faac frontend)
588 p_enc->fmt_in.audio.i_rate = p_context->sample_rate;*/
589 /* vlc should default to low-complexity profile, faac encoder
590 * has bug and aac audio has issues otherwise atm */
591 p_context->profile = p_sys->i_aac_profile;
595 /* Misc parameters */
596 p_context->bit_rate = p_enc->fmt_out.i_bitrate;
598 #if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT( 52, 69, 2 )
599 /* Set reasonable defaults to VP8, based on
600 libvpx-720p preset from libvpx ffmpeg-patch */
601 if( i_codec_id == CODEC_ID_VP8 )
603 p_context->bit_rate_tolerance = __MAX(2 * p_enc->fmt_out.i_bitrate, p_sys->i_vtolerance );
604 /* I used Harrison-stetson method here to get there values */
605 p_context->rc_max_rate = 3 * p_enc->fmt_out.i_bitrate;
606 p_context->rc_min_rate = p_enc->fmt_out.i_bitrate / 200;
609 #if 0 /* enable when/if vp8 encoder is accepted in libavcodec */
611 p_context->level = 216;
612 p_context->profile = 0;
613 p_context->rc_buffer_aggressivity = 0.95;
614 p_context->token_partitions = 4;
615 p_context->mb_static_threshold = 0;
620 if( i_codec_id == CODEC_ID_RAWVIDEO )
622 /* XXX: hack: Force same codec (will be handled by transcode) */
623 p_enc->fmt_in.video.i_chroma = p_enc->fmt_in.i_codec = p_enc->fmt_out.i_codec;
624 GetFfmpegChroma( &p_context->pix_fmt, p_enc->fmt_in.video );
627 /* Make sure we get extradata filled by the encoder */
628 p_context->extradata_size = 0;
629 p_context->extradata = NULL;
630 p_context->flags |= CODEC_FLAG_GLOBAL_HEADER;
634 ret = avcodec_open( p_context, p_codec );
635 vlc_avcodec_unlock();
638 if( p_enc->fmt_in.i_cat == AUDIO_ES &&
639 (p_context->channels > 2 || i_codec_id == CODEC_ID_MP2
640 || i_codec_id == CODEC_ID_MP3) )
642 if( p_context->channels > 2 )
644 p_context->channels = 2;
645 p_enc->fmt_in.audio.i_channels = 2; // FIXME
646 msg_Warn( p_enc, "stereo mode selected (codec limitation)" );
649 if( i_codec_id == CODEC_ID_MP2 || i_codec_id == CODEC_ID_MP3 )
653 for ( i_frequency = 0; i_frequency < 6; i_frequency++ )
655 if ( p_enc->fmt_out.audio.i_rate
656 == mpa_freq_tab[i_frequency] )
659 if ( i_frequency == 6 )
661 msg_Err( p_enc, "MPEG audio doesn't support frequency=%d",
662 p_enc->fmt_out.audio.i_rate );
667 for ( i = 1; i < 14; i++ )
669 if ( p_enc->fmt_out.i_bitrate / 1000
670 <= mpa_bitrate_tab[i_frequency / 3][i] )
673 if ( p_enc->fmt_out.i_bitrate / 1000
674 != mpa_bitrate_tab[i_frequency / 3][i] )
677 "MPEG audio doesn't support bitrate=%d, using %d",
678 p_enc->fmt_out.i_bitrate,
679 mpa_bitrate_tab[i_frequency / 3][i] * 1000 );
680 p_enc->fmt_out.i_bitrate =
681 mpa_bitrate_tab[i_frequency / 3][i] * 1000;
682 p_context->bit_rate = p_enc->fmt_out.i_bitrate;
686 p_context->codec = NULL;
688 ret = avcodec_open( p_context, p_codec );
689 vlc_avcodec_unlock();
692 msg_Err( p_enc, "cannot open encoder" );
694 _("Streaming / Transcoding failed"),
695 "%s", _("VLC could not open the encoder.") );
702 msg_Err( p_enc, "cannot open encoder" );
703 dialog_Fatal( p_enc, _("Streaming / Transcoding failed"),
704 "%s", _("VLC could not open the encoder.") );
710 if( i_codec_id == CODEC_ID_FLAC )
712 p_enc->fmt_out.i_extra = 4 + 1 + 3 + p_context->extradata_size;
713 p_enc->fmt_out.p_extra = malloc( p_enc->fmt_out.i_extra );
714 if( p_enc->fmt_out.p_extra )
716 uint8_t *p = p_enc->fmt_out.p_extra;
721 p[4] = 0x80; /* streaminfo block, last block before audio */
722 p[5] = ( p_context->extradata_size >> 16 ) & 0xff;
723 p[6] = ( p_context->extradata_size >> 8 ) & 0xff;
724 p[7] = ( p_context->extradata_size ) & 0xff;
725 memcpy( &p[8], p_context->extradata, p_context->extradata_size );
729 p_enc->fmt_out.i_extra = 0;
734 p_enc->fmt_out.i_extra = p_context->extradata_size;
735 if( p_enc->fmt_out.i_extra )
737 p_enc->fmt_out.p_extra = malloc( p_enc->fmt_out.i_extra );
738 memcpy( p_enc->fmt_out.p_extra, p_context->extradata,
739 p_enc->fmt_out.i_extra );
743 p_context->flags &= ~CODEC_FLAG_GLOBAL_HEADER;
745 if( p_enc->fmt_in.i_cat == AUDIO_ES )
747 GetVlcAudioFormat( &p_enc->fmt_in.i_codec,
748 &p_enc->fmt_in.audio.i_bitspersample,
749 p_sys->p_context->sample_fmt );
750 p_sys->i_sample_bytes = (p_enc->fmt_in.audio.i_bitspersample / 8) *
752 p_sys->i_frame_size = p_context->frame_size > 1 ?
753 p_context->frame_size :
754 RAW_AUDIO_FRAME_SIZE;
755 p_sys->p_buffer = malloc( p_sys->i_frame_size * p_sys->i_sample_bytes );
756 p_enc->fmt_out.audio.i_blockalign = p_context->block_align;
757 p_enc->fmt_out.audio.i_bitspersample = aout_BitsPerSample( vlc_fourcc_GetCodec( AUDIO_ES, p_enc->fmt_out.i_codec ) );
759 if( p_context->frame_size > 1 )
760 p_sys->i_buffer_out = 8 * AVCODEC_MAX_AUDIO_FRAME_SIZE;
762 p_sys->i_buffer_out = p_sys->i_frame_size * p_sys->i_sample_bytes;
763 p_sys->p_buffer_out = malloc( p_sys->i_buffer_out );
766 msg_Dbg( p_enc, "found encoder %s", psz_namecodec );
771 /****************************************************************************
772 * EncodeVideo: the whole thing
773 ****************************************************************************/
774 static block_t *EncodeVideo( encoder_t *p_enc, picture_t *p_pict )
776 encoder_sys_t *p_sys = p_enc->p_sys;
781 memset( &frame, 0, sizeof( AVFrame ) );
782 if( likely(p_pict) ) {
783 for( i_plane = 0; i_plane < p_pict->i_planes; i_plane++ )
785 frame.data[i_plane] = p_pict->p[i_plane].p_pixels;
786 frame.linesize[i_plane] = p_pict->p[i_plane].i_pitch;
789 /* Let ffmpeg select the frame type */
792 frame.repeat_pict = p_pict->i_nb_fields - 2;
793 frame.interlaced_frame = !p_pict->b_progressive;
794 frame.top_field_first = !!p_pict->b_top_field_first;
796 /* Set the pts of the frame being encoded (segfaults with mpeg4!)*/
797 if( p_enc->fmt_out.i_codec != VLC_CODEC_MP4V )
799 frame.pts = p_pict->date ? p_pict->date : (int64_t)AV_NOPTS_VALUE;
801 if ( p_sys->b_hurry_up && frame.pts != (int64_t)AV_NOPTS_VALUE )
803 mtime_t current_date = mdate();
805 if ( current_date + HURRY_UP_GUARD3 > frame.pts )
807 p_sys->p_context->mb_decision = FF_MB_DECISION_SIMPLE;
808 p_sys->p_context->trellis = 0;
809 msg_Dbg( p_enc, "hurry up mode 3" );
813 p_sys->p_context->mb_decision = p_sys->i_hq;
815 if ( current_date + HURRY_UP_GUARD2 > frame.pts )
817 p_sys->p_context->trellis = 0;
818 p_sys->p_context->noise_reduction = p_sys->i_noise_reduction
819 + (HURRY_UP_GUARD2 + current_date - frame.pts) / 500;
820 msg_Dbg( p_enc, "hurry up mode 2" );
824 p_sys->p_context->trellis = p_sys->b_trellis;
826 p_sys->p_context->noise_reduction =
827 p_sys->i_noise_reduction;
831 if ( current_date + HURRY_UP_GUARD1 > frame.pts )
833 frame.pict_type = FF_P_TYPE;
834 /* msg_Dbg( p_enc, "hurry up mode 1 %lld", current_date + HURRY_UP_GUARD1 - frame.pts ); */
840 frame.pts = (int64_t)AV_NOPTS_VALUE;
843 if ( frame.pts != (int64_t)AV_NOPTS_VALUE && frame.pts != 0 )
845 if ( p_sys->i_last_pts == frame.pts )
847 msg_Warn( p_enc, "almost fed libavcodec with two frames with the "
848 "same PTS (%"PRId64 ")", frame.pts );
851 else if ( p_sys->i_last_pts > frame.pts )
853 msg_Warn( p_enc, "almost fed libavcodec with a frame in the "
854 "past (current: %"PRId64 ", last: %"PRId64")",
855 frame.pts, p_sys->i_last_pts );
860 p_sys->i_last_pts = frame.pts;
864 frame.quality = p_sys->i_quality;
866 /* Ugly work-around for stupid libavcodec behaviour */
868 p_sys->pi_delay_pts[p_sys->i_framenum % MAX_FRAME_DELAY] = frame.pts;
869 frame.pts = p_sys->i_framenum * AV_TIME_BASE *
870 p_enc->fmt_in.video.i_frame_rate_base;
871 frame.pts += p_enc->fmt_in.video.i_frame_rate - 1;
872 frame.pts /= p_enc->fmt_in.video.i_frame_rate;
873 /* End work-around */
875 i_out = avcodec_encode_video( p_sys->p_context, p_sys->p_buffer_out,
876 p_sys->i_buffer_out, &frame );
880 i_out = avcodec_encode_video( p_sys->p_context, p_sys->p_buffer_out,
881 p_sys->i_buffer_out, NULL);
886 block_t *p_block = block_New( p_enc, i_out );
887 memcpy( p_block->p_buffer, p_sys->p_buffer_out, i_out );
889 /* FIXME, 3-2 pulldown is not handled correctly */
890 p_block->i_length = INT64_C(1000000) *
891 p_enc->fmt_in.video.i_frame_rate_base /
892 p_enc->fmt_in.video.i_frame_rate;
894 if( !p_sys->p_context->max_b_frames || !p_sys->p_context->delay )
896 /* No delay -> output pts == input pts */
898 p_block->i_dts = p_pict->date;
899 p_block->i_pts = p_block->i_dts;
901 else if( p_sys->p_context->coded_frame->pts != (int64_t)AV_NOPTS_VALUE &&
902 p_sys->p_context->coded_frame->pts != 0 &&
903 p_sys->i_buggy_pts_detect != p_sys->p_context->coded_frame->pts )
905 p_sys->i_buggy_pts_detect = p_sys->p_context->coded_frame->pts;
906 p_block->i_pts = p_sys->p_context->coded_frame->pts;
908 /* Ugly work-around for stupid libavcodec behaviour */
910 int64_t i_framenum = p_block->i_pts *
911 p_enc->fmt_in.video.i_frame_rate /
912 p_enc->fmt_in.video.i_frame_rate_base / AV_TIME_BASE;
914 p_block->i_pts = p_sys->pi_delay_pts[i_framenum % MAX_FRAME_DELAY];
916 /* End work-around */
918 if( p_sys->p_context->coded_frame->pict_type != FF_I_TYPE &&
919 p_sys->p_context->coded_frame->pict_type != FF_P_TYPE )
921 p_block->i_dts = p_block->i_pts;
925 if( p_sys->i_last_ref_pts )
927 p_block->i_dts = p_sys->i_last_ref_pts;
931 /* Let's put something sensible */
932 p_block->i_dts = p_block->i_pts;
935 p_sys->i_last_ref_pts = p_block->i_pts;
940 /* Buggy libavcodec which doesn't update coded_frame->pts
942 p_block->i_dts = p_block->i_pts = p_pict->date;
945 switch ( p_sys->p_context->coded_frame->pict_type )
948 p_block->i_flags |= BLOCK_FLAG_TYPE_I;
951 p_block->i_flags |= BLOCK_FLAG_TYPE_P;
954 p_block->i_flags |= BLOCK_FLAG_TYPE_B;
964 /****************************************************************************
965 * EncodeAudio: the whole thing
966 ****************************************************************************/
967 static block_t *EncodeAudio( encoder_t *p_enc, aout_buffer_t *p_aout_buf )
969 encoder_sys_t *p_sys = p_enc->p_sys;
971 block_t *p_block, *p_chain = NULL;
973 uint8_t *p_buffer = p_aout_buf->p_buffer;
974 int i_samples = p_aout_buf->i_nb_samples;
975 int i_samples_delay = p_sys->i_samples_delay;
977 p_sys->i_pts = p_aout_buf->i_pts -
978 (mtime_t)1000000 * (mtime_t)p_sys->i_samples_delay /
979 (mtime_t)p_enc->fmt_in.audio.i_rate;
981 p_sys->i_samples_delay += i_samples;
983 while( p_sys->i_samples_delay >= p_sys->i_frame_size )
988 if( i_samples_delay )
990 /* Take care of the left-over from last time */
991 int i_delay_size = i_samples_delay;
992 int i_size = (p_sys->i_frame_size - i_delay_size) *
993 p_sys->i_sample_bytes;
995 memcpy( p_sys->p_buffer + i_delay_size * p_sys->i_sample_bytes,
997 p_buffer -= i_delay_size * p_sys->i_sample_bytes;
998 i_samples += i_samples_delay;
1001 p_samples = p_sys->p_buffer;
1005 p_samples = p_buffer;
1008 i_out = avcodec_encode_audio( p_sys->p_context, p_sys->p_buffer_out,
1009 p_sys->i_buffer_out, p_samples );
1012 msg_Warn( p_enc, "avcodec_encode_audio: %d", i_out );
1014 p_buffer += p_sys->i_frame_size * p_sys->i_sample_bytes;
1015 p_sys->i_samples_delay -= p_sys->i_frame_size;
1016 i_samples -= p_sys->i_frame_size;
1021 p_block = block_New( p_enc, i_out );
1022 memcpy( p_block->p_buffer, p_sys->p_buffer_out, i_out );
1024 p_block->i_length = (mtime_t)1000000 *
1025 (mtime_t)p_sys->i_frame_size /
1026 (mtime_t)p_sys->p_context->sample_rate;
1028 p_block->i_dts = p_block->i_pts = p_sys->i_pts;
1031 p_sys->i_pts += p_block->i_length;
1032 block_ChainAppend( &p_chain, p_block );
1035 /* Backup the remaining raw samples */
1038 memcpy( &p_sys->p_buffer[i_samples_delay * p_sys->i_sample_bytes],
1040 i_samples * p_sys->i_sample_bytes );
1046 /*****************************************************************************
1047 * CloseEncoder: ffmpeg encoder destruction
1048 *****************************************************************************/
1049 void CloseEncoder( vlc_object_t *p_this )
1051 encoder_t *p_enc = (encoder_t *)p_this;
1052 encoder_sys_t *p_sys = p_enc->p_sys;
1055 avcodec_close( p_sys->p_context );
1056 vlc_avcodec_unlock();
1057 av_free( p_sys->p_context );
1059 free( p_sys->p_buffer );
1060 free( p_sys->p_buffer_out );