1 /*****************************************************************************
2 * encoder.c: video and audio encoder using the libavcodec library
3 *****************************************************************************
4 * Copyright (C) 1999-2004 VLC authors and VideoLAN
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 it
14 * under the terms of the GNU Lesser General Public License as published by
15 * the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
23 * You should have received a copy of the GNU Lesser General Public License
24 * along with this program; if not, write to the Free Software Foundation,
25 * 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>
44 #include <libavcodec/avcodec.h>
49 #if LIBAVUTIL_VERSION_CHECK( 52,2,6,0,0 )
50 # include <libavutil/channel_layout.h>
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 #define RAW_AUDIO_FRAME_SIZE (2048)
61 /*****************************************************************************
63 *****************************************************************************/
64 int OpenEncoder ( vlc_object_t * );
65 void CloseEncoder( vlc_object_t * );
67 static block_t *EncodeVideo( encoder_t *, picture_t * );
68 static block_t *EncodeAudio( encoder_t *, block_t * );
70 struct thread_context_t;
72 /*****************************************************************************
73 * thread_context_t : for multithreaded encoding
74 *****************************************************************************/
75 struct thread_context_t
79 AVCodecContext *p_context;
80 int (* pf_func)(AVCodecContext *c, void *arg);
89 /*****************************************************************************
90 * encoder_sys_t : libavcodec encoder descriptor
91 *****************************************************************************/
95 * libavcodec properties
98 AVCodecContext *p_context;
101 * Common buffer mainly for audio as frame size in there needs usually be constant
105 uint8_t *p_interleave_buf;
110 mtime_t i_last_ref_pts;
111 mtime_t i_buggy_pts_detect;
118 size_t i_sample_bytes;
120 size_t i_samples_delay; //How much samples in delay buffer
122 bool b_variable; //Encoder can be fed with any size frames not just frame_size
126 /* Encoding settings */
133 int i_rc_buffer_size;
134 float f_rc_buffer_aggressivity;
137 bool b_interlace, b_interlace_me;
138 float f_i_quant_factor;
139 int i_noise_reduction;
142 int i_quality; /* for VBR */
143 float f_lumi_masking, f_dark_masking, f_p_masking, f_border_masking;
144 #if (LIBAVCODEC_VERSION_MAJOR < 55)
145 int i_luma_elim, i_chroma_elim;
147 int i_aac_profile; /* AAC profile to use.*/
152 static const char *const ppsz_enc_options[] = {
153 "keyint", "bframes", "vt", "qmin", "qmax", "codec", "hq",
154 "rc-buffer-size", "rc-buffer-aggressivity", "pre-me", "hurry-up",
155 "interlace", "interlace-me", "i-quant-factor", "noise-reduction", "mpeg4-matrix",
156 "trellis", "qscale", "strict", "lumi-masking", "dark-masking",
157 "p-masking", "border-masking",
158 #if (LIBAVCODEC_VERSION_MAJOR < 55)
159 "luma-elim-threshold", "chroma-elim-threshold",
161 "aac-profile", "options",
165 static const uint16_t mpa_bitrate_tab[2][15] =
167 {0, 32, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384},
168 {0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160}
171 static const uint16_t mpa_freq_tab[6] =
172 { 44100, 48000, 32000, 22050, 24000, 16000 };
174 static const uint16_t mpeg4_default_intra_matrix[64] = {
175 8, 17, 18, 19, 21, 23, 25, 27,
176 17, 18, 19, 21, 23, 25, 27, 28,
177 20, 21, 22, 23, 24, 26, 28, 30,
178 21, 22, 23, 24, 26, 28, 30, 32,
179 22, 23, 24, 26, 28, 30, 32, 35,
180 23, 24, 26, 28, 30, 32, 35, 38,
181 25, 26, 28, 30, 32, 35, 38, 41,
182 27, 28, 30, 32, 35, 38, 41, 45,
185 static const uint16_t mpeg4_default_non_intra_matrix[64] = {
186 16, 17, 18, 19, 20, 21, 22, 23,
187 17, 18, 19, 20, 21, 22, 23, 24,
188 18, 19, 20, 21, 22, 23, 24, 25,
189 19, 20, 21, 22, 23, 24, 26, 27,
190 20, 21, 22, 23, 25, 26, 27, 28,
191 21, 22, 23, 24, 26, 27, 28, 30,
192 22, 23, 24, 26, 27, 28, 30, 31,
193 23, 24, 25, 27, 28, 30, 31, 33,
196 /*****************************************************************************
197 * OpenEncoder: probe the encoder
198 *****************************************************************************/
200 int OpenEncoder( vlc_object_t *p_this )
202 encoder_t *p_enc = (encoder_t *)p_this;
203 encoder_sys_t *p_sys;
204 AVCodecContext *p_context;
205 AVCodec *p_codec = NULL;
206 int i_codec_id, i_cat;
207 const char *psz_namecodec;
211 /* Initialization must be done before avcodec_find_encoder() */
214 config_ChainParse( p_enc, ENC_CFG_PREFIX, ppsz_enc_options, p_enc->p_cfg );
216 if( p_enc->fmt_out.i_codec == VLC_CODEC_MP3 )
219 i_codec_id = AV_CODEC_ID_MP3;
220 psz_namecodec = "MPEG I/II Layer 3";
222 else if( p_enc->fmt_out.i_codec == VLC_CODEC_MP2 )
225 i_codec_id = AV_CODEC_ID_MP2;
226 psz_namecodec = "MPEG I/II Layer 2";
228 else if( p_enc->fmt_out.i_codec == VLC_CODEC_MP1V )
231 i_codec_id = AV_CODEC_ID_MPEG1VIDEO;
232 psz_namecodec = "MPEG-1 video";
234 else if( !GetFfmpegCodec( p_enc->fmt_out.i_codec, &i_cat, &i_codec_id,
237 if( FindFfmpegChroma( p_enc->fmt_out.i_codec ) == PIX_FMT_NONE )
238 return VLC_EGENERIC; /* handed chroma output */
241 i_codec_id = AV_CODEC_ID_RAWVIDEO;
242 psz_namecodec = "Raw video";
245 if( p_enc->fmt_out.i_cat == VIDEO_ES && i_cat != VIDEO_ES )
247 msg_Err( p_enc, "\"%s\" is not a video encoder", psz_namecodec );
248 dialog_Fatal( p_enc, _("Streaming / Transcoding failed"),
249 _("\"%s\" is no video encoder."), psz_namecodec );
253 if( p_enc->fmt_out.i_cat == AUDIO_ES && i_cat != AUDIO_ES )
255 msg_Err( p_enc, "\"%s\" is not an audio encoder", psz_namecodec );
256 dialog_Fatal( p_enc, _("Streaming / Transcoding failed"),
257 _("\"%s\" is no audio encoder."), psz_namecodec );
261 if( p_enc->fmt_out.i_cat == SPU_ES )
263 /* We don't support subtitle encoding */
267 char *psz_encoder = var_GetString( p_this, ENC_CFG_PREFIX "codec" );
268 if( psz_encoder && *psz_encoder )
270 p_codec = avcodec_find_encoder_by_name( psz_encoder );
272 msg_Err( p_this, "Encoder `%s' not found", psz_encoder );
273 else if( p_codec->id != i_codec_id )
275 msg_Err( p_this, "Encoder `%s' can't handle %4.4s",
276 psz_encoder, (char*)&p_enc->fmt_out.i_codec );
282 p_codec = avcodec_find_encoder( i_codec_id );
285 msg_Err( p_enc, "cannot find encoder %s\n"
286 "*** Your Libav/FFmpeg installation is crippled. ***\n"
287 "*** Please check with your Libav/FFmpeg packager. ***\n"
288 "*** This is NOT a VLC media player issue. ***", psz_namecodec );
290 dialog_Fatal( p_enc, _("Streaming / Transcoding failed"), _(
291 /* I have had enough of all these MPEG-3 transcoding bug reports.
292 * Downstream packager, you had better not patch this out, or I will be really
293 * annoyed. Think about it - you don't want to fork the VLC translation files,
294 * do you? -- Courmisch, 2008-10-22 */
295 "It seems your Libav/FFmpeg (libavcodec) installation lacks the following encoder:\n"
297 "If you don't know how to fix this, ask for support from your distribution.\n"
299 "This is not an error inside VLC media player.\n"
300 "Do not contact the VideoLAN project about this issue.\n"),
305 /* Allocate the memory needed to store the encoder's structure */
306 if( ( p_sys = calloc( 1, sizeof(encoder_sys_t) ) ) == NULL )
308 p_enc->p_sys = p_sys;
309 p_sys->i_samples_delay = 0;
310 p_sys->p_codec = p_codec;
311 p_sys->b_planar = false;
313 p_sys->p_buffer = NULL;
314 p_sys->p_interleave_buf = NULL;
315 p_sys->i_buffer_out = 0;
317 p_context = avcodec_alloc_context3(p_codec);
318 p_sys->p_context = p_context;
319 p_sys->p_context->codec_id = p_sys->p_codec->id;
320 p_context->thread_type = 0;
321 p_context->debug = var_InheritInteger( p_enc, "avcodec-debug" );
322 p_context->opaque = (void *)p_this;
324 /* set CPU capabilities */
325 #if LIBAVUTIL_VERSION_CHECK(51, 25, 0, 42, 100)
326 av_set_cpu_flags_mask( INT_MAX & ~GetVlcDspMask() );
328 p_context->dsp_mask = GetVlcDspMask();
331 p_sys->i_key_int = var_GetInteger( p_enc, ENC_CFG_PREFIX "keyint" );
332 p_sys->i_b_frames = var_GetInteger( p_enc, ENC_CFG_PREFIX "bframes" );
333 p_sys->i_vtolerance = var_GetInteger( p_enc, ENC_CFG_PREFIX "vt" ) * 1000;
334 p_sys->b_interlace = var_GetBool( p_enc, ENC_CFG_PREFIX "interlace" );
335 p_sys->b_interlace_me = var_GetBool( p_enc, ENC_CFG_PREFIX "interlace-me" );
336 p_sys->b_pre_me = var_GetBool( p_enc, ENC_CFG_PREFIX "pre-me" );
337 p_sys->b_hurry_up = var_GetBool( p_enc, ENC_CFG_PREFIX "hurry-up" );
339 if( p_sys->b_hurry_up )
341 /* hurry up mode needs noise reduction, even small */
342 p_sys->i_noise_reduction = 1;
345 p_sys->i_rc_buffer_size = var_GetInteger( p_enc, ENC_CFG_PREFIX "rc-buffer-size" );
346 p_sys->f_rc_buffer_aggressivity = var_GetFloat( p_enc, ENC_CFG_PREFIX "rc-buffer-aggressivity" );
347 p_sys->f_i_quant_factor = var_GetFloat( p_enc, ENC_CFG_PREFIX "i-quant-factor" );
348 p_sys->i_noise_reduction = var_GetInteger( p_enc, ENC_CFG_PREFIX "noise-reduction" );
349 p_sys->b_mpeg4_matrix = var_GetBool( p_enc, ENC_CFG_PREFIX "mpeg4-matrix" );
351 f_val = var_GetFloat( p_enc, ENC_CFG_PREFIX "qscale" );
353 p_sys->i_quality = 0;
354 if( f_val < 0.01 || f_val > 255.0 )
357 p_sys->i_quality = (int)(FF_QP2LAMBDA * f_val + 0.5);
359 psz_val = var_GetString( p_enc, ENC_CFG_PREFIX "hq" );
360 p_sys->i_hq = FF_MB_DECISION_RD;
361 if( psz_val && *psz_val )
363 if( !strcmp( psz_val, "rd" ) )
364 p_sys->i_hq = FF_MB_DECISION_RD;
365 else if( !strcmp( psz_val, "bits" ) )
366 p_sys->i_hq = FF_MB_DECISION_BITS;
367 else if( !strcmp( psz_val, "simple" ) )
368 p_sys->i_hq = FF_MB_DECISION_SIMPLE;
370 p_sys->i_hq = FF_MB_DECISION_RD;
373 p_sys->i_hq = FF_MB_DECISION_RD;
376 p_sys->i_qmin = var_GetInteger( p_enc, ENC_CFG_PREFIX "qmin" );
377 p_sys->i_qmax = var_GetInteger( p_enc, ENC_CFG_PREFIX "qmax" );
378 p_sys->b_trellis = var_GetBool( p_enc, ENC_CFG_PREFIX "trellis" );
380 p_context->strict_std_compliance = var_GetInteger( p_enc, ENC_CFG_PREFIX "strict" );
382 p_sys->f_lumi_masking = var_GetFloat( p_enc, ENC_CFG_PREFIX "lumi-masking" );
383 p_sys->f_dark_masking = var_GetFloat( p_enc, ENC_CFG_PREFIX "dark-masking" );
384 p_sys->f_p_masking = var_GetFloat( p_enc, ENC_CFG_PREFIX "p-masking" );
385 p_sys->f_border_masking = var_GetFloat( p_enc, ENC_CFG_PREFIX "border-masking" );
386 #if (LIBAVCODEC_VERSION_MAJOR < 55)
387 p_sys->i_luma_elim = var_GetInteger( p_enc, ENC_CFG_PREFIX "luma-elim-threshold" );
388 p_sys->i_chroma_elim = var_GetInteger( p_enc, ENC_CFG_PREFIX "chroma-elim-threshold" );
391 psz_val = var_GetString( p_enc, ENC_CFG_PREFIX "aac-profile" );
392 /* libavcodec uses faac encoder atm, and it has issues with
393 * other than low-complexity profile, so default to that */
394 p_sys->i_aac_profile = FF_PROFILE_AAC_LOW;
395 if( psz_val && *psz_val )
397 if( !strncmp( psz_val, "main", 4 ) )
398 p_sys->i_aac_profile = FF_PROFILE_AAC_MAIN;
399 else if( !strncmp( psz_val, "low", 3 ) )
400 p_sys->i_aac_profile = FF_PROFILE_AAC_LOW;
401 #if 0 /* Not supported by FAAC encoder */
402 else if( !strncmp( psz_val, "ssr", 3 ) )
403 p_sys->i_aac_profile = FF_PROFILE_AAC_SSR;
405 else if( !strncmp( psz_val, "ltp", 3 ) )
406 p_sys->i_aac_profile = FF_PROFILE_AAC_LTP;
407 #if LIBAVCODEC_VERSION_CHECK( 54, 19, 0, 35, 100 )
408 /* These require libavcodec with libfdk-aac */
409 else if( !strncmp( psz_val, "hev2", 4 ) )
410 p_sys->i_aac_profile = FF_PROFILE_AAC_HE_V2;
411 else if( !strncmp( psz_val, "hev1", 4 ) )
412 p_sys->i_aac_profile = FF_PROFILE_AAC_HE;
416 msg_Warn( p_enc, "unknown AAC profile requested, setting it to low" );
417 p_sys->i_aac_profile = FF_PROFILE_AAC_LOW;
422 if( p_enc->fmt_in.i_cat == VIDEO_ES )
424 if( !p_enc->fmt_in.video.i_width || !p_enc->fmt_in.video.i_height )
426 msg_Warn( p_enc, "invalid size %ix%i", p_enc->fmt_in.video.i_width,
427 p_enc->fmt_in.video.i_height );
432 p_context->codec_type = AVMEDIA_TYPE_VIDEO;
434 p_context->width = p_enc->fmt_in.video.i_width;
435 p_context->height = p_enc->fmt_in.video.i_height;
437 p_context->time_base.num = p_enc->fmt_in.video.i_frame_rate_base;
438 p_context->time_base.den = p_enc->fmt_in.video.i_frame_rate;
439 if( p_codec->supported_framerates )
441 AVRational target = {
442 .num = p_enc->fmt_in.video.i_frame_rate,
443 .den = p_enc->fmt_in.video.i_frame_rate_base,
445 int idx = av_find_nearest_q_idx(target, p_codec->supported_framerates);
447 p_context->time_base.num = p_codec->supported_framerates[idx].den;
448 p_context->time_base.den = p_codec->supported_framerates[idx].num;
451 /* Defaults from ffmpeg.c */
452 p_context->qblur = 0.5;
453 p_context->qcompress = 0.5;
454 p_context->b_quant_offset = 1.25;
455 p_context->b_quant_factor = 1.25;
456 p_context->i_quant_offset = 0.0;
457 p_context->i_quant_factor = -0.8;
459 p_context->lumi_masking = p_sys->f_lumi_masking;
460 p_context->dark_masking = p_sys->f_dark_masking;
461 p_context->p_masking = p_sys->f_p_masking;
462 p_context->border_masking = p_sys->f_border_masking;
463 #if (LIBAVCODEC_VERSION_MAJOR < 55)
464 p_context->luma_elim_threshold = p_sys->i_luma_elim;
465 p_context->chroma_elim_threshold = p_sys->i_chroma_elim;
468 if( p_sys->i_key_int > 0 )
469 p_context->gop_size = p_sys->i_key_int;
470 p_context->max_b_frames =
471 VLC_CLIP( p_sys->i_b_frames, 0, FF_MAX_B_FRAMES );
472 p_context->b_frame_strategy = 0;
473 if( !p_context->max_b_frames &&
474 ( p_enc->fmt_out.i_codec == VLC_CODEC_MPGV ||
475 p_enc->fmt_out.i_codec == VLC_CODEC_MP2V ) )
476 p_context->flags |= CODEC_FLAG_LOW_DELAY;
478 av_reduce( &p_context->sample_aspect_ratio.num,
479 &p_context->sample_aspect_ratio.den,
480 p_enc->fmt_in.video.i_sar_num,
481 p_enc->fmt_in.video.i_sar_den, 1 << 30 );
484 p_enc->fmt_in.i_codec = VLC_CODEC_I420;
485 p_enc->fmt_in.video.i_chroma = p_enc->fmt_in.i_codec;
486 GetFfmpegChroma( &p_context->pix_fmt, &p_enc->fmt_in.video );
488 if( p_codec->pix_fmts )
490 const enum PixelFormat *p = p_codec->pix_fmts;
491 for( ; *p != -1; p++ )
493 if( *p == p_context->pix_fmt ) break;
495 if( *p == -1 ) p_context->pix_fmt = p_codec->pix_fmts[0];
496 GetVlcChroma( &p_enc->fmt_in.video, p_context->pix_fmt );
497 p_enc->fmt_in.i_codec = p_enc->fmt_in.video.i_chroma;
501 if ( p_sys->f_i_quant_factor != 0.0 )
502 p_context->i_quant_factor = p_sys->f_i_quant_factor;
504 p_context->noise_reduction = p_sys->i_noise_reduction;
506 if ( p_sys->b_mpeg4_matrix )
508 p_context->intra_matrix = mpeg4_default_intra_matrix;
509 p_context->inter_matrix = mpeg4_default_non_intra_matrix;
512 if ( p_sys->b_pre_me )
514 p_context->pre_me = 1;
515 p_context->me_pre_cmp = FF_CMP_CHROMA;
518 if ( p_sys->b_interlace )
520 if ( p_context->height <= 280 )
522 if ( p_context->height != 16 || p_context->width != 16 )
524 "disabling interlaced video because height=%d <= 280",
529 p_context->flags |= CODEC_FLAG_INTERLACED_DCT;
530 if ( p_sys->b_interlace_me )
531 p_context->flags |= CODEC_FLAG_INTERLACED_ME;
535 p_context->trellis = p_sys->b_trellis;
537 if ( p_sys->i_qmin > 0 && p_sys->i_qmin == p_sys->i_qmax )
538 p_context->flags |= CODEC_FLAG_QSCALE;
539 /* These codecs cause libavcodec to exit if thread_count is > 1.
540 See libavcodec/mpegvideo_enc.c:MPV_encode_init and
541 libavcodec/svq3.c , WMV2 calls MPV_encode_init also.
543 if ( i_codec_id == AV_CODEC_ID_FLV1 ||
544 i_codec_id == AV_CODEC_ID_H261 ||
545 i_codec_id == AV_CODEC_ID_LJPEG ||
546 i_codec_id == AV_CODEC_ID_MJPEG ||
547 i_codec_id == AV_CODEC_ID_H263 ||
548 i_codec_id == AV_CODEC_ID_H263P ||
549 i_codec_id == AV_CODEC_ID_MSMPEG4V1 ||
550 i_codec_id == AV_CODEC_ID_MSMPEG4V2 ||
551 i_codec_id == AV_CODEC_ID_MSMPEG4V3 ||
552 i_codec_id == AV_CODEC_ID_WMV1 ||
553 i_codec_id == AV_CODEC_ID_WMV2 ||
554 i_codec_id == AV_CODEC_ID_RV10 ||
555 i_codec_id == AV_CODEC_ID_RV20 ||
556 i_codec_id == AV_CODEC_ID_SVQ3 )
557 p_enc->i_threads = 1;
559 if( p_sys->i_vtolerance > 0 )
560 p_context->bit_rate_tolerance = p_sys->i_vtolerance;
562 /* usually if someone sets bitrate, he likes more to get that bitrate
563 * over quality should help 'normal' user to get asked bitrate
565 if( p_enc->fmt_out.i_bitrate > 0 && p_sys->i_qmax == 0 && p_sys->i_qmin == 0 )
571 if( p_sys->i_qmin > 0 )
573 p_context->qmin = p_sys->i_qmin;
574 p_context->mb_lmin = p_context->lmin = p_sys->i_qmin * FF_QP2LAMBDA;
576 if( p_sys->i_qmax > 0 )
578 p_context->qmax = p_sys->i_qmax;
579 p_context->mb_lmax = p_context->lmax = p_sys->i_qmax * FF_QP2LAMBDA;
581 p_context->max_qdiff = 3;
583 p_context->mb_decision = p_sys->i_hq;
585 if( p_sys->i_quality )
587 p_context->flags |= CODEC_FLAG_QSCALE;
588 p_context->global_quality = p_sys->i_quality;
592 p_context->rc_qsquish = 1.0;
593 if( p_sys->i_rc_buffer_size )
595 p_context->rc_max_rate = p_enc->fmt_out.i_bitrate;
596 p_context->rc_min_rate = p_enc->fmt_out.i_bitrate;
598 p_context->rc_buffer_size = p_sys->i_rc_buffer_size;
599 /* This is from ffmpeg's ffmpeg.c : */
600 p_context->rc_initial_buffer_occupancy
601 = p_sys->i_rc_buffer_size * 3/4;
602 p_context->rc_buffer_aggressivity = p_sys->f_rc_buffer_aggressivity;
605 else if( p_enc->fmt_in.i_cat == AUDIO_ES )
607 /* work around bug in libmp3lame encoding */
608 if( i_codec_id == AV_CODEC_ID_MP3 && p_enc->fmt_in.audio.i_channels > 2 )
609 p_enc->fmt_in.audio.i_channels = 2;
611 p_context->codec_type = AVMEDIA_TYPE_AUDIO;
612 p_context->sample_fmt = p_codec->sample_fmts ?
613 p_codec->sample_fmts[0] :
616 /* Try to match avcodec input format to vlc format so we could avoid one
618 if( GetVlcAudioFormat( p_context->sample_fmt ) != p_enc->fmt_in.i_codec )
620 msg_Dbg( p_enc, "Trying to find more suitable sample format instead of %s", av_get_sample_fmt_name( p_context->sample_fmt ) );
621 for( unsigned int i=0; p_codec->sample_fmts[i] != -1; i++ )
623 if( GetVlcAudioFormat( p_codec->sample_fmts[i] ) == p_enc->fmt_in.i_codec )
625 p_context->sample_fmt = p_codec->sample_fmts[i];
626 msg_Dbg( p_enc, "Using %s as new sample format", av_get_sample_fmt_name( p_context->sample_fmt ) );
631 p_sys->b_planar = av_sample_fmt_is_planar( p_context->sample_fmt );
632 // Try if we can use interleaved format for codec input as VLC doesn't really do planar audio yet
633 // FIXME: Remove when planar/interleaved audio in vlc is equally supported
634 if( p_sys->b_planar )
636 msg_Dbg( p_enc, "Trying to find packet sample format instead of planar %s", av_get_sample_fmt_name( p_context->sample_fmt ) );
637 for( unsigned int i=0; p_codec->sample_fmts[i] != -1; i++ )
639 if( !av_sample_fmt_is_planar( p_codec->sample_fmts[i] ) )
641 p_context->sample_fmt = p_codec->sample_fmts[i];
642 msg_Dbg( p_enc, "Changing to packet format %s as new sample format", av_get_sample_fmt_name( p_context->sample_fmt ) );
647 msg_Dbg( p_enc, "Ended up using %s as sample format", av_get_sample_fmt_name( p_context->sample_fmt ) );
648 p_enc->fmt_in.i_codec = GetVlcAudioFormat( p_context->sample_fmt );
649 p_sys->b_planar = av_sample_fmt_is_planar( p_context->sample_fmt );
651 p_context->sample_rate = p_enc->fmt_out.audio.i_rate;
652 date_Init( &p_sys->buffer_date, p_enc->fmt_out.audio.i_rate, 1 );
653 date_Set( &p_sys->buffer_date, 0 );
654 p_context->time_base.num = 1;
655 p_context->time_base.den = p_context->sample_rate;
656 p_context->channels = p_enc->fmt_out.audio.i_channels;
657 #if LIBAVUTIL_VERSION_CHECK( 52, 2, 6, 0, 0)
658 p_context->channel_layout = av_get_default_channel_layout( p_context->channels );
661 if ( p_enc->fmt_out.i_codec == VLC_CODEC_MP4A )
663 /* XXX: FAAC does resample only when setting the INPUT samplerate
664 * to the desired value (-R option of the faac frontend)
665 p_enc->fmt_in.audio.i_rate = p_context->sample_rate;*/
666 /* vlc should default to low-complexity profile, faac encoder
667 * has bug and aac audio has issues otherwise atm */
668 p_context->profile = p_sys->i_aac_profile;
672 /* Misc parameters */
673 p_context->bit_rate = p_enc->fmt_out.i_bitrate;
675 /* Set reasonable defaults to VP8, based on
676 libvpx-720p preset from libvpx ffmpeg-patch */
677 if( i_codec_id == AV_CODEC_ID_VP8 )
679 /* Lets give bitrate tolerance */
680 p_context->bit_rate_tolerance = __MAX(2 * (int)p_enc->fmt_out.i_bitrate, p_sys->i_vtolerance );
681 /* default to 120 frames between keyframe */
682 if( !var_GetInteger( p_enc, ENC_CFG_PREFIX "keyint" ) )
683 p_context->gop_size = 120;
684 /* Don't set rc-values atm, they were from time before
685 libvpx was officially in FFmpeg */
686 //p_context->rc_max_rate = 24 * 1000 * 1000; //24M
687 //p_context->rc_min_rate = 40 * 1000; // 40k
688 /* seems that FFmpeg presets have 720p as divider for buffers */
689 if( p_enc->fmt_out.video.i_height >= 720 )
691 /* Check that we don't overrun users qmin/qmax values */
692 if( !var_GetInteger( p_enc, ENC_CFG_PREFIX "qmin" ) )
694 p_context->qmin = 10;
695 p_context->mb_lmin = p_context->lmin = 10 * FF_QP2LAMBDA;
698 if( !var_GetInteger( p_enc, ENC_CFG_PREFIX "qmax" ) )
700 p_context->qmax = 42;
701 p_context->mb_lmax = p_context->lmax = 42 * FF_QP2LAMBDA;
705 if( !var_GetInteger( p_enc, ENC_CFG_PREFIX "qmin" ) )
708 p_context->mb_lmin = p_context->lmin = FF_QP2LAMBDA;
713 #if 0 /* enable when/if vp8 encoder is accepted in libavcodec */
715 p_context->level = 216;
716 p_context->profile = 0;
717 p_context->rc_buffer_aggressivity = 0.95;
718 p_context->token_partitions = 4;
719 p_context->mb_static_threshold = 0;
723 if( i_codec_id == AV_CODEC_ID_RAWVIDEO )
725 /* XXX: hack: Force same codec (will be handled by transcode) */
726 p_enc->fmt_in.video.i_chroma = p_enc->fmt_in.i_codec = p_enc->fmt_out.i_codec;
727 GetFfmpegChroma( &p_context->pix_fmt, &p_enc->fmt_in.video );
730 /* Make sure we get extradata filled by the encoder */
731 p_context->extradata_size = 0;
732 p_context->extradata = NULL;
733 p_context->flags |= CODEC_FLAG_GLOBAL_HEADER;
735 if( p_enc->i_threads >= 1)
736 p_context->thread_count = p_enc->i_threads;
738 p_context->thread_count = vlc_GetCPUCount();
741 char *psz_opts = var_InheritString(p_enc, ENC_CFG_PREFIX "options");
742 AVDictionary *options = NULL;
743 if (psz_opts && *psz_opts)
744 options = vlc_av_get_options(psz_opts);
748 ret = avcodec_open2( p_context, p_codec, options ? &options : NULL );
749 vlc_avcodec_unlock();
751 AVDictionaryEntry *t = NULL;
752 while ((t = av_dict_get(options, "", t, AV_DICT_IGNORE_SUFFIX))) {
753 msg_Err(p_enc, "Unknown option \"%s\"", t->key);
758 if( p_enc->fmt_in.i_cat != AUDIO_ES ||
759 (p_context->channels <= 2 && i_codec_id != AV_CODEC_ID_MP2
760 && i_codec_id != AV_CODEC_ID_MP3) )
762 msg_Err( p_enc, "cannot open encoder" );
763 dialog_Fatal( p_enc, _("Streaming / Transcoding failed"),
764 "%s", _("VLC could not open the encoder.") );
765 av_dict_free(&options);
769 if( p_context->channels > 2 )
771 p_context->channels = 2;
772 p_enc->fmt_in.audio.i_channels = 2; // FIXME
773 msg_Warn( p_enc, "stereo mode selected (codec limitation)" );
776 if( i_codec_id == AV_CODEC_ID_MP2 || i_codec_id == AV_CODEC_ID_MP3 )
779 es_format_t *fmt = &p_enc->fmt_out;
781 for ( i_frequency = 0; i_frequency < 6; i_frequency++ )
782 if ( fmt->audio.i_rate == mpa_freq_tab[i_frequency] )
785 if ( i_frequency == 6 )
787 msg_Err( p_enc, "MPEG audio doesn't support frequency=%d",
789 av_dict_free(&options);
793 for ( i = 1; i < 14; i++ )
794 if (fmt->i_bitrate/1000 <= mpa_bitrate_tab[i_frequency / 3][i])
797 if (fmt->i_bitrate / 1000 != mpa_bitrate_tab[i_frequency / 3][i])
800 "MPEG audio doesn't support bitrate=%d, using %d",
802 mpa_bitrate_tab[i_frequency / 3][i] * 1000 );
803 fmt->i_bitrate = mpa_bitrate_tab[i_frequency / 3][i] * 1000;
804 p_context->bit_rate = fmt->i_bitrate;
808 p_context->codec = NULL;
810 ret = avcodec_open2( p_context, p_codec, options ? &options : NULL );
811 vlc_avcodec_unlock();
814 msg_Err( p_enc, "cannot open encoder" );
816 _("Streaming / Transcoding failed"),
817 "%s", _("VLC could not open the encoder.") );
818 av_dict_free(&options);
823 av_dict_free(&options);
825 if( i_codec_id == AV_CODEC_ID_FLAC )
827 p_enc->fmt_out.i_extra = 4 + 1 + 3 + p_context->extradata_size;
828 p_enc->fmt_out.p_extra = malloc( p_enc->fmt_out.i_extra );
829 if( p_enc->fmt_out.p_extra )
831 uint8_t *p = p_enc->fmt_out.p_extra;
836 p[4] = 0x80; /* streaminfo block, last block before audio */
837 p[5] = ( p_context->extradata_size >> 16 ) & 0xff;
838 p[6] = ( p_context->extradata_size >> 8 ) & 0xff;
839 p[7] = ( p_context->extradata_size ) & 0xff;
840 memcpy( &p[8], p_context->extradata, p_context->extradata_size );
844 p_enc->fmt_out.i_extra = 0;
849 p_enc->fmt_out.i_extra = p_context->extradata_size;
850 if( p_enc->fmt_out.i_extra )
852 p_enc->fmt_out.p_extra = malloc( p_enc->fmt_out.i_extra );
853 if ( p_enc->fmt_out.p_extra == NULL )
857 memcpy( p_enc->fmt_out.p_extra, p_context->extradata,
858 p_enc->fmt_out.i_extra );
862 p_context->flags &= ~CODEC_FLAG_GLOBAL_HEADER;
864 if( p_enc->fmt_in.i_cat == AUDIO_ES )
866 p_enc->fmt_in.i_codec = GetVlcAudioFormat( p_sys->p_context->sample_fmt );
867 p_enc->fmt_in.audio.i_bitspersample = aout_BitsPerSample( p_enc->fmt_in.i_codec );
869 p_sys->i_sample_bytes = (p_enc->fmt_in.audio.i_bitspersample / 8);
870 p_sys->i_frame_size = p_context->frame_size > 1 ?
871 p_context->frame_size :
873 p_sys->p_buffer = malloc( p_sys->i_frame_size * p_sys->i_sample_bytes * p_enc->fmt_in.audio.i_channels);
874 if ( unlikely( p_sys->p_buffer == NULL ) )
878 p_enc->fmt_out.audio.i_blockalign = p_context->block_align;
879 p_enc->fmt_out.audio.i_bitspersample = aout_BitsPerSample( p_enc->fmt_out.i_codec );
880 //b_variable tells if we can feed any size frames to encoder
881 p_sys->b_variable = p_context->frame_size ? false : true;
883 p_sys->i_buffer_out = p_sys->i_frame_size * p_sys->i_sample_bytes * p_enc->fmt_in.audio.i_channels;
885 if( p_sys->b_planar )
887 p_sys->p_interleave_buf = malloc( p_sys->i_buffer_out );
888 if( unlikely( p_sys->p_interleave_buf == NULL ) )
893 p_sys->frame = avcodec_alloc_frame();
898 msg_Dbg( p_enc, "found encoder %s", psz_namecodec );
900 p_enc->pf_encode_video = EncodeVideo;
901 p_enc->pf_encode_audio = EncodeAudio;
906 free( p_enc->fmt_out.p_extra );
907 free( p_sys->p_buffer );
908 free( p_sys->p_interleave_buf );
913 /****************************************************************************
914 * EncodeVideo: the whole thing
915 ****************************************************************************/
916 static block_t *EncodeVideo( encoder_t *p_enc, picture_t *p_pict )
918 encoder_sys_t *p_sys = p_enc->p_sys;
919 int i_out, i_plane, i_got_packet=1;
921 /* Initialize the video output buffer the first time.
922 * This is done here instead of OpenEncoder() because we need the actual
923 * bits_per_pixel value, without having to assume anything.
925 const int bytesPerPixel = p_enc->fmt_out.video.i_bits_per_pixel ?
926 p_enc->fmt_out.video.i_bits_per_pixel / 8 : 3;
927 const int blocksize = __MAX( FF_MIN_BUFFER_SIZE,bytesPerPixel * p_sys->p_context->height * p_sys->p_context->width + 200 );
928 block_t *p_block = block_Alloc( blocksize );
929 if( unlikely(p_block == NULL) )
932 #if (LIBAVCODEC_VERSION_MAJOR >= 54)
934 /*We don't use av_pkt with major_version < 54, so no point init it*/
935 av_init_packet( &av_pkt );
936 av_pkt.data = p_block->p_buffer;
937 av_pkt.size = p_block->i_buffer;
939 if( likely(p_pict) ) {
940 avcodec_get_frame_defaults( p_sys->frame );
941 for( i_plane = 0; i_plane < p_pict->i_planes; i_plane++ )
943 p_sys->frame->data[i_plane] = p_pict->p[i_plane].p_pixels;
944 p_sys->frame->linesize[i_plane] = p_pict->p[i_plane].i_pitch;
947 /* Let libavcodec select the frame type */
948 p_sys->frame->pict_type = 0;
950 p_sys->frame->repeat_pict = p_pict->i_nb_fields - 2;
951 p_sys->frame->interlaced_frame = !p_pict->b_progressive;
952 p_sys->frame->top_field_first = !!p_pict->b_top_field_first;
954 /* Set the pts of the frame being encoded */
955 p_sys->frame->pts = p_pict->date ? p_pict->date : (int64_t)AV_NOPTS_VALUE;
957 if ( p_sys->b_hurry_up && p_sys->frame->pts != (int64_t)AV_NOPTS_VALUE )
959 mtime_t current_date = mdate();
961 if ( current_date + HURRY_UP_GUARD3 > p_sys->frame->pts )
963 p_sys->p_context->mb_decision = FF_MB_DECISION_SIMPLE;
964 p_sys->p_context->trellis = 0;
965 msg_Dbg( p_enc, "hurry up mode 3" );
969 p_sys->p_context->mb_decision = p_sys->i_hq;
971 if ( current_date + HURRY_UP_GUARD2 > p_sys->frame->pts )
973 p_sys->p_context->trellis = 0;
974 p_sys->p_context->noise_reduction = p_sys->i_noise_reduction
975 + (HURRY_UP_GUARD2 + current_date - p_sys->frame->pts) / 500;
976 msg_Dbg( p_enc, "hurry up mode 2" );
980 p_sys->p_context->trellis = p_sys->b_trellis;
982 p_sys->p_context->noise_reduction =
983 p_sys->i_noise_reduction;
987 if ( current_date + HURRY_UP_GUARD1 > p_sys->frame->pts )
989 p_sys->frame->pict_type = AV_PICTURE_TYPE_P;
990 /* msg_Dbg( p_enc, "hurry up mode 1 %lld", current_date + HURRY_UP_GUARD1 - frame.pts ); */
994 if ( p_sys->frame->pts != (int64_t)AV_NOPTS_VALUE && p_sys->frame->pts != 0 )
996 if ( p_sys->i_last_pts == p_sys->frame->pts )
998 msg_Warn( p_enc, "almost fed libavcodec with two frames with the "
999 "same PTS (%"PRId64 ")", p_sys->frame->pts );
1002 else if ( p_sys->i_last_pts > p_sys->frame->pts )
1004 msg_Warn( p_enc, "almost fed libavcodec with a frame in the "
1005 "past (current: %"PRId64 ", last: %"PRId64")",
1006 p_sys->frame->pts, p_sys->i_last_pts );
1011 p_sys->i_last_pts = p_sys->frame->pts;
1015 p_sys->frame->quality = p_sys->i_quality;
1017 #if (LIBAVCODEC_VERSION_MAJOR < 54)
1018 i_out = avcodec_encode_video( p_sys->p_context, p_block->p_buffer, p_block->i_buffer, p_sys->frame );
1020 i_out = avcodec_encode_video2( p_sys->p_context, &av_pkt, p_sys->frame, &i_got_packet );
1025 #if (LIBAVCODEC_VERSION_MAJOR < 54)
1026 i_out = avcodec_encode_video( p_sys->p_context, p_block->p_buffer, p_block->i_buffer, NULL);
1028 i_out = avcodec_encode_video2( p_sys->p_context, &av_pkt, NULL, &i_got_packet );
1032 if( unlikely( i_out < 0 || i_got_packet == 0 ) )
1034 block_Release( p_block );
1039 #if (LIBAVCODEC_VERSION_MAJOR < 54)
1040 p_block->i_buffer = i_out;
1042 /* FIXME, 3-2 pulldown is not handled correctly */
1043 p_block->i_length = INT64_C(1000000) *
1044 p_enc->fmt_in.video.i_frame_rate_base /
1045 p_enc->fmt_in.video.i_frame_rate;
1047 if( !p_sys->p_context->max_b_frames || !p_sys->p_context->delay )
1049 /* No delay -> output pts == input pts */
1051 p_block->i_dts = p_pict->date;
1052 p_block->i_pts = p_block->i_dts;
1054 else if( p_sys->p_context->coded_frame->pts != (int64_t)AV_NOPTS_VALUE &&
1055 p_sys->p_context->coded_frame->pts != 0 &&
1056 p_sys->i_buggy_pts_detect != p_sys->p_context->coded_frame->pts )
1058 p_sys->i_buggy_pts_detect = p_sys->p_context->coded_frame->pts;
1059 p_block->i_pts = p_sys->p_context->coded_frame->pts;
1061 if( p_sys->p_context->coded_frame->pict_type != AV_PICTURE_TYPE_I &&
1062 p_sys->p_context->coded_frame->pict_type != AV_PICTURE_TYPE_P )
1064 p_block->i_dts = p_block->i_pts;
1068 if( p_sys->i_last_ref_pts )
1070 p_block->i_dts = p_sys->i_last_ref_pts;
1074 /* Let's put something sensible */
1075 p_block->i_dts = p_block->i_pts;
1078 p_sys->i_last_ref_pts = p_block->i_pts;
1083 /* Buggy libavcodec which doesn't update coded_frame->pts
1085 p_block->i_dts = p_block->i_pts = p_pict->date;
1088 p_block->i_buffer = av_pkt.size;
1090 p_block->i_length = av_pkt.duration / p_sys->p_context->time_base.den;
1092 p_block->i_pts = av_pkt.pts;
1093 p_block->i_dts = av_pkt.dts;
1094 if( unlikely( av_pkt.flags & AV_PKT_FLAG_CORRUPT ) )
1095 p_block->i_flags |= BLOCK_FLAG_CORRUPTED;
1098 switch ( p_sys->p_context->coded_frame->pict_type )
1100 case AV_PICTURE_TYPE_I:
1101 case AV_PICTURE_TYPE_SI:
1102 p_block->i_flags |= BLOCK_FLAG_TYPE_I;
1104 case AV_PICTURE_TYPE_P:
1105 case AV_PICTURE_TYPE_SP:
1106 p_block->i_flags |= BLOCK_FLAG_TYPE_P;
1108 case AV_PICTURE_TYPE_B:
1109 case AV_PICTURE_TYPE_BI:
1110 p_block->i_flags |= BLOCK_FLAG_TYPE_B;
1113 p_block->i_flags |= BLOCK_FLAG_TYPE_PB;
1119 /****************************************************************************
1120 * EncodeAudio: the whole thing
1121 ****************************************************************************/
1122 static block_t *EncodeAudio( encoder_t *p_enc, block_t *p_aout_buf )
1124 encoder_sys_t *p_sys = p_enc->p_sys;
1126 block_t *p_block, *p_chain = NULL;
1127 int got_packet,i_out;
1128 size_t buffer_delay = 0, i_samples_left = 0;
1130 //i_bytes_left is amount of bytes we get
1131 i_samples_left = p_aout_buf ? p_aout_buf->i_nb_samples : 0;
1132 buffer_delay = p_sys->i_samples_delay * p_sys->i_sample_bytes * p_enc->fmt_in.audio.i_channels;
1134 //p_sys->i_buffer_out = p_sys->i_frame_size * chan * p_sys->i_sample_bytes
1135 //Calculate how many bytes we would need from current buffer to fill frame
1136 size_t leftover_samples = __MAX(0,__MIN((ssize_t)i_samples_left, (ssize_t)(p_sys->i_frame_size - p_sys->i_samples_delay)));
1138 // Check if we have enough samples in delay_buffer and current p_aout_buf to fill frame
1139 // Or if we are cleaning up
1140 if( ( buffer_delay > 0 ) &&
1141 ( ( p_aout_buf && ( leftover_samples <= p_aout_buf->i_nb_samples ) &&
1142 ( (leftover_samples + p_sys->i_samples_delay ) >= p_sys->i_frame_size )
1148 //How much we need to copy from new packet
1149 const int leftover = leftover_samples * p_enc->fmt_in.audio.i_channels * p_sys->i_sample_bytes;
1151 #if LIBAVUTIL_VERSION_CHECK( 51,27,2,46,100 )
1152 const int align = 0;
1154 const int align = 1;
1157 AVPacket packet = {0};
1158 avcodec_get_frame_defaults( p_sys->frame );
1159 p_sys->frame->format = p_sys->p_context->sample_fmt;
1160 p_sys->frame->pts = date_Get( &p_sys->buffer_date );
1161 p_sys->frame->nb_samples = leftover_samples + p_sys->i_samples_delay;
1162 date_Increment( &p_sys->buffer_date, p_sys->i_frame_size );
1164 if( likely( p_aout_buf ) )
1166 p_aout_buf->i_nb_samples -= leftover_samples;
1167 memcpy( p_sys->p_buffer+buffer_delay, p_aout_buf->p_buffer, leftover );
1169 // We need to deinterleave from p_aout_buf to p_buffer the leftover bytes
1170 if( p_sys->b_planar )
1171 aout_Deinterleave( p_sys->p_interleave_buf, p_sys->p_buffer,
1172 p_sys->i_frame_size, p_enc->fmt_in.audio.i_channels, p_enc->fmt_in.i_codec );
1174 memcpy( p_sys->p_buffer + buffer_delay, p_aout_buf->p_buffer, leftover);
1176 p_aout_buf->p_buffer += leftover;
1177 p_aout_buf->i_buffer -= leftover;
1178 p_aout_buf->i_pts = date_Get( &p_sys->buffer_date );
1180 if(unlikely( ( (leftover + buffer_delay) < p_sys->i_buffer_out ) &&
1181 !(p_sys->p_codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME ))
1184 msg_Dbg( p_enc, "No small last frame support, padding");
1185 size_t padding_size = p_sys->i_buffer_out - (leftover+buffer_delay);
1186 memset( p_sys->p_buffer + (leftover+buffer_delay), 0, padding_size );
1187 buffer_delay += padding_size;
1189 if( avcodec_fill_audio_frame( p_sys->frame, p_enc->fmt_in.audio.i_channels,
1190 p_sys->p_context->sample_fmt, p_sys->b_planar ? p_sys->p_interleave_buf : p_sys->p_buffer,
1191 leftover + buffer_delay,
1193 msg_Err( p_enc, "filling error on fillup" );
1196 p_sys->i_samples_delay = 0;
1198 p_block = block_Alloc( p_sys->i_buffer_out );
1199 av_init_packet( &packet );
1200 packet.data = p_block->p_buffer;
1201 packet.size = p_block->i_buffer;
1203 i_out = avcodec_encode_audio2( p_sys->p_context, &packet, p_sys->frame, &got_packet );
1205 if( unlikely( !got_packet || ( i_out < 0 ) || !packet.size ) )
1209 msg_Err( p_enc,"Encoding problem..");
1212 block_Release( p_block );
1216 p_block->i_buffer = packet.size;
1217 p_block->i_length = (mtime_t)1000000 *
1218 (mtime_t)p_sys->frame->nb_samples /
1219 (mtime_t)p_sys->p_context->sample_rate;
1221 p_block->i_dts = p_block->i_pts = packet.pts;
1223 block_ChainAppend( &p_chain, p_block );
1226 if( unlikely( !p_aout_buf ) )
1228 msg_Dbg(p_enc,"Flushing..");
1230 AVPacket packet = {0};
1231 p_block = block_Alloc( p_sys->i_buffer_out );
1232 av_init_packet( &packet );
1233 packet.data = p_block->p_buffer;
1234 packet.size = p_block->i_buffer;
1236 i_out = avcodec_encode_audio2( p_sys->p_context, &packet, NULL, &got_packet );
1237 p_block->i_buffer = packet.size;
1239 p_block->i_length = (mtime_t)1000000 *
1240 (mtime_t)p_sys->i_frame_size /
1241 (mtime_t)p_sys->p_context->sample_rate;
1243 p_block->i_dts = p_block->i_pts = packet.pts;
1245 if( i_out >= 0 && got_packet )
1246 block_ChainAppend( &p_chain, p_block );
1247 } while( got_packet && (i_out>=0) );
1252 while( ( p_aout_buf->i_nb_samples >= p_sys->i_frame_size ) ||
1253 ( p_sys->b_variable && p_aout_buf->i_nb_samples ) )
1255 AVPacket packet = {0};
1256 #if LIBAVUTIL_VERSION_CHECK( 51,27,2,46,100 )
1257 const int align = 0;
1259 const int align = 1;
1262 if( unlikely( p_aout_buf->i_pts > VLC_TS_INVALID &&
1263 p_aout_buf->i_pts != date_Get( &p_sys->buffer_date ) ) )
1264 date_Set( &p_sys->buffer_date, p_aout_buf->i_pts );
1266 avcodec_get_frame_defaults( p_sys->frame );
1267 if( p_sys->b_variable )
1268 p_sys->frame->nb_samples = p_aout_buf->i_nb_samples;
1270 p_sys->frame->nb_samples = p_sys->i_frame_size;
1271 p_sys->frame->format = p_sys->p_context->sample_fmt;
1272 p_sys->frame->pts = date_Get( &p_sys->buffer_date );
1274 if( p_sys->b_planar )
1276 aout_Deinterleave( p_sys->p_buffer, p_aout_buf->p_buffer,
1277 p_sys->frame->nb_samples, p_enc->fmt_in.audio.i_channels, p_enc->fmt_in.i_codec );
1281 if( avcodec_fill_audio_frame( p_sys->frame, p_enc->fmt_in.audio.i_channels,
1282 p_sys->p_context->sample_fmt,
1283 p_sys->b_planar ? p_sys->p_buffer : p_aout_buf->p_buffer,
1284 __MIN(p_sys->i_buffer_out, p_aout_buf->i_buffer),
1286 msg_Err( p_enc, "filling error on encode" );
1288 p_aout_buf->p_buffer += (p_sys->frame->nb_samples * p_enc->fmt_in.audio.i_channels * p_sys->i_sample_bytes);
1289 p_aout_buf->i_buffer -= (p_sys->frame->nb_samples * p_enc->fmt_in.audio.i_channels * p_sys->i_sample_bytes);
1290 p_aout_buf->i_nb_samples -= p_sys->frame->nb_samples;
1291 date_Increment( &p_sys->buffer_date, p_sys->frame->nb_samples );
1294 p_block = block_Alloc( p_sys->i_buffer_out );
1295 av_init_packet( &packet );
1296 packet.data = p_block->p_buffer;
1297 packet.size = p_block->i_buffer;
1299 i_out = avcodec_encode_audio2( p_sys->p_context, &packet, p_sys->frame, &got_packet );
1300 p_block->i_buffer = packet.size;
1302 if( unlikely( !got_packet || ( i_out < 0 ) ) )
1306 msg_Err( p_enc,"Encoding problem..");
1309 block_Release( p_block );
1313 p_block->i_buffer = packet.size;
1315 p_block->i_length = (mtime_t)1000000 *
1316 (mtime_t)p_sys->frame->nb_samples /
1317 (mtime_t)p_sys->p_context->sample_rate;
1319 p_block->i_dts = p_block->i_pts = packet.pts;
1321 block_ChainAppend( &p_chain, p_block );
1324 // We have leftover samples that don't fill frame_size, and libavcodec doesn't seem to like
1325 // that frame has more data than p_sys->i_frame_size most of the cases currently.
1326 if( p_aout_buf->i_nb_samples > 0 )
1328 memcpy( p_sys->p_buffer + buffer_delay, p_aout_buf->p_buffer,
1329 p_aout_buf->i_nb_samples * p_sys->i_sample_bytes * p_enc->fmt_in.audio.i_channels);
1330 p_sys->i_samples_delay += p_aout_buf->i_nb_samples;
1336 /*****************************************************************************
1337 * CloseEncoder: libavcodec encoder destruction
1338 *****************************************************************************/
1339 void CloseEncoder( vlc_object_t *p_this )
1341 encoder_t *p_enc = (encoder_t *)p_this;
1342 encoder_sys_t *p_sys = p_enc->p_sys;
1344 /*FIXME: we should use avcodec_free_frame, but we don't require so new avcodec that has it*/
1345 av_freep( &p_sys->frame );
1348 avcodec_close( p_sys->p_context );
1349 vlc_avcodec_unlock();
1350 av_free( p_sys->p_context );
1353 free( p_sys->p_interleave_buf );
1354 free( p_sys->p_buffer );