encoder.c
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上传日期:2009-03-27
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文件大小:29k
- /*****************************************************************************
- * encoder.c: video and audio encoder using the ffmpeg library
- *****************************************************************************
- * Copyright (C) 1999-2004 VideoLAN
- * $Id: encoder.c 9156 2004-11-05 14:57:53Z gbazin $
- *
- * Authors: Laurent Aimar <fenrir@via.ecp.fr>
- * Gildas Bazin <gbazin@videolan.org>
- * Christophe Massiot <massiot@via.ecp.fr>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
- *****************************************************************************/
- /*****************************************************************************
- * Preamble
- *****************************************************************************/
- #include <vlc/vlc.h>
- #include <vlc/vout.h>
- #include <vlc/aout.h>
- #include <vlc/sout.h>
- #include <vlc/decoder.h>
- /* ffmpeg header */
- #define HAVE_MMX
- #ifdef HAVE_FFMPEG_AVCODEC_H
- # include <ffmpeg/avcodec.h>
- #else
- # include <avcodec.h>
- #endif
- #if LIBAVCODEC_BUILD < 4704
- # define AV_NOPTS_VALUE 0
- #endif
- #if LIBAVCODEC_BUILD < 4684
- # define FF_QP2LAMBDA 118
- #endif
- #include "ffmpeg.h"
- #define AVCODEC_MAX_VIDEO_FRAME_SIZE (3*1024*1024)
- #define HURRY_UP_GUARD1 (450000)
- #define HURRY_UP_GUARD2 (300000)
- #define HURRY_UP_GUARD3 (100000)
- #define MAX_FRAME_DELAY (FF_MAX_B_FRAMES + 2)
- /*****************************************************************************
- * Local prototypes
- *****************************************************************************/
- int E_(OpenEncoder) ( vlc_object_t * );
- void E_(CloseEncoder)( vlc_object_t * );
- static block_t *EncodeVideo( encoder_t *, picture_t * );
- static block_t *EncodeAudio( encoder_t *, aout_buffer_t * );
- struct thread_context_t;
- static int FfmpegThread( struct thread_context_t *p_context );
- static int FfmpegExecute( AVCodecContext *s,
- int (*pf_func)(AVCodecContext *c2, void *arg2),
- void **arg, int *ret, int count );
- /*****************************************************************************
- * thread_context_t : for multithreaded encoding
- *****************************************************************************/
- #if LIBAVCODEC_BUILD >= 4702
- struct thread_context_t
- {
- VLC_COMMON_MEMBERS
- AVCodecContext *p_context;
- int (* pf_func)(AVCodecContext *c, void *arg);
- void *arg;
- int i_ret;
- vlc_mutex_t lock;
- vlc_cond_t cond;
- vlc_bool_t b_work, b_done;
- };
- #endif
- /*****************************************************************************
- * encoder_sys_t : ffmpeg encoder descriptor
- *****************************************************************************/
- struct encoder_sys_t
- {
- /*
- * Ffmpeg properties
- */
- AVCodec *p_codec;
- AVCodecContext *p_context;
- /*
- * Common properties
- */
- char *p_buffer;
- char *p_buffer_out;
- /*
- * Video properties
- */
- mtime_t i_last_ref_pts;
- mtime_t i_buggy_pts_detect;
- mtime_t i_last_pts;
- vlc_bool_t b_inited;
- /*
- * Audio properties
- */
- int i_frame_size;
- int i_samples_delay;
- mtime_t i_pts;
- /* Encoding settings */
- int i_key_int;
- int i_b_frames;
- int i_vtolerance;
- int i_qmin;
- int i_qmax;
- int i_hq;
- vlc_bool_t b_strict_rc;
- int i_rc_buffer_size;
- float f_rc_buffer_aggressivity;
- vlc_bool_t b_pre_me;
- vlc_bool_t b_hurry_up;
- vlc_bool_t b_interlace;
- float f_i_quant_factor;
- int i_noise_reduction;
- vlc_bool_t b_mpeg4_matrix;
- vlc_bool_t b_trellis;
- int i_quality; /* for VBR */
- /* Used to work around stupid timestamping behaviour in libavcodec */
- uint64_t i_framenum;
- mtime_t pi_delay_pts[MAX_FRAME_DELAY];
- };
- static const char *ppsz_enc_options[] = {
- "keyint", "bframes", "vt", "qmin", "qmax", "hq", "strict_rc",
- "rc-buffer-size", "rc-buffer-aggressivity", "pre-me", "hurry-up",
- "interlace", "i-quant-factor", "noise-reduction", "mpeg4-matrix",
- "trellis", "qscale", "strict", NULL
- };
- /*****************************************************************************
- * OpenEncoder: probe the encoder
- *****************************************************************************/
- extern int16_t ff_mpeg4_default_intra_matrix[];
- extern int16_t ff_mpeg4_default_non_intra_matrix[];
- int E_(OpenEncoder)( vlc_object_t *p_this )
- {
- encoder_t *p_enc = (encoder_t *)p_this;
- encoder_sys_t *p_sys = p_enc->p_sys;
- AVCodecContext *p_context;
- AVCodec *p_codec;
- int i_codec_id, i_cat;
- char *psz_namecodec;
- vlc_value_t val;
- if( !E_(GetFfmpegCodec)( p_enc->fmt_out.i_codec, &i_cat, &i_codec_id,
- &psz_namecodec ) )
- {
- if( E_(GetFfmpegChroma)( p_enc->fmt_out.i_codec ) < 0 )
- {
- /* handed chroma output */
- return VLC_EGENERIC;
- }
- i_cat = VIDEO_ES;
- i_codec_id = CODEC_ID_RAWVIDEO;
- psz_namecodec = "Raw video";
- }
- if( p_enc->fmt_out.i_cat == VIDEO_ES && i_cat != VIDEO_ES )
- {
- msg_Err( p_enc, ""%s" is not a video encoder", psz_namecodec );
- return VLC_EGENERIC;
- }
- if( p_enc->fmt_out.i_cat == AUDIO_ES && i_cat != AUDIO_ES )
- {
- msg_Err( p_enc, ""%s" is not an audio encoder", psz_namecodec );
- return VLC_EGENERIC;
- }
- /* Initialization must be done before avcodec_find_decoder() */
- E_(InitLibavcodec)(p_this);
- p_codec = avcodec_find_encoder( i_codec_id );
- if( !p_codec )
- {
- msg_Err( p_enc, "cannot find encoder %s", psz_namecodec );
- return VLC_EGENERIC;
- }
- /* Allocate the memory needed to store the decoder's structure */
- if( ( p_sys = (encoder_sys_t *)malloc(sizeof(encoder_sys_t)) ) == NULL )
- {
- msg_Err( p_enc, "out of memory" );
- return VLC_EGENERIC;
- }
- memset( p_sys, 0, sizeof(encoder_sys_t) );
- p_enc->p_sys = p_sys;
- p_sys->p_codec = p_codec;
- p_enc->pf_encode_video = EncodeVideo;
- p_enc->pf_encode_audio = EncodeAudio;
- p_sys->p_buffer_out = NULL;
- p_sys->p_buffer = NULL;
- p_sys->p_context = p_context = avcodec_alloc_context();
- /* Set CPU capabilities */
- p_context->dsp_mask = 0;
- if( !(p_enc->p_libvlc->i_cpu & CPU_CAPABILITY_MMX) )
- {
- p_context->dsp_mask |= FF_MM_MMX;
- }
- if( !(p_enc->p_libvlc->i_cpu & CPU_CAPABILITY_MMXEXT) )
- {
- p_context->dsp_mask |= FF_MM_MMXEXT;
- }
- if( !(p_enc->p_libvlc->i_cpu & CPU_CAPABILITY_3DNOW) )
- {
- p_context->dsp_mask |= FF_MM_3DNOW;
- }
- if( !(p_enc->p_libvlc->i_cpu & CPU_CAPABILITY_SSE) )
- {
- p_context->dsp_mask |= FF_MM_SSE;
- p_context->dsp_mask |= FF_MM_SSE2;
- }
- sout_CfgParse( p_enc, ENC_CFG_PREFIX, ppsz_enc_options, p_enc->p_cfg );
- var_Get( p_enc, ENC_CFG_PREFIX "keyint", &val );
- p_sys->i_key_int = val.i_int;
- var_Get( p_enc, ENC_CFG_PREFIX "bframes", &val );
- p_sys->i_b_frames = val.i_int;
- var_Get( p_enc, ENC_CFG_PREFIX "vt", &val );
- p_sys->i_vtolerance = val.i_int;
- var_Get( p_enc, ENC_CFG_PREFIX "interlace", &val );
- p_sys->b_interlace = val.b_bool;
- var_Get( p_enc, ENC_CFG_PREFIX "pre-me", &val );
- p_sys->b_pre_me = val.b_bool;
- var_Get( p_enc, ENC_CFG_PREFIX "hurry-up", &val );
- p_sys->b_hurry_up = val.b_bool;
- if( p_sys->b_hurry_up )
- {
- /* hurry up mode needs noise reduction, even small */
- p_sys->i_noise_reduction = 1;
- }
- var_Get( p_enc, ENC_CFG_PREFIX "strict-rc", &val );
- p_sys->b_strict_rc = val.b_bool;
- var_Get( p_enc, ENC_CFG_PREFIX "rc-buffer-size", &val );
- p_sys->i_rc_buffer_size = val.i_int;
- var_Get( p_enc, ENC_CFG_PREFIX "rc-buffer-aggressivity", &val );
- p_sys->f_rc_buffer_aggressivity = val.f_float;
- var_Get( p_enc, ENC_CFG_PREFIX "i-quant-factor", &val );
- p_sys->f_i_quant_factor = val.f_float;
- var_Get( p_enc, ENC_CFG_PREFIX "noise-reduction", &val );
- p_sys->i_noise_reduction = val.i_int;
- var_Get( p_enc, ENC_CFG_PREFIX "mpeg4-matrix", &val );
- p_sys->b_mpeg4_matrix = val.b_bool;
- var_Get( p_enc, ENC_CFG_PREFIX "qscale", &val );
- if( val.f_float < 0.01 || val.f_float > 255.0 ) val.f_float = 0;
- p_sys->i_quality = (int)(FF_QP2LAMBDA * val.f_float + 0.5);
- var_Get( p_enc, ENC_CFG_PREFIX "hq", &val );
- if( val.psz_string && *val.psz_string )
- {
- if( !strcmp( val.psz_string, "rd" ) )
- p_sys->i_hq = FF_MB_DECISION_RD;
- else if( !strcmp( val.psz_string, "bits" ) )
- p_sys->i_hq = FF_MB_DECISION_BITS;
- else if( !strcmp( val.psz_string, "simple" ) )
- p_sys->i_hq = FF_MB_DECISION_SIMPLE;
- else
- p_sys->i_hq = FF_MB_DECISION_RD;
- }
- if( val.psz_string ) free( val.psz_string );
- var_Get( p_enc, ENC_CFG_PREFIX "qmin", &val );
- p_sys->i_qmin = val.i_int;
- var_Get( p_enc, ENC_CFG_PREFIX "qmax", &val );
- p_sys->i_qmax = val.i_int;
- var_Get( p_enc, ENC_CFG_PREFIX "trellis", &val );
- p_sys->b_trellis = val.b_bool;
- var_Get( p_enc, ENC_CFG_PREFIX "strict", &val );
- if( val.i_int < - 1 || val.i_int > 1 ) val.i_int = 0;
- p_context->strict_std_compliance = val.i_int;
- if( p_enc->fmt_in.i_cat == VIDEO_ES )
- {
- int i_aspect_num, i_aspect_den;
- if( !p_enc->fmt_in.video.i_width || !p_enc->fmt_in.video.i_height )
- {
- msg_Warn( p_enc, "invalid size %ix%i", p_enc->fmt_in.video.i_width,
- p_enc->fmt_in.video.i_height );
- free( p_sys );
- return VLC_EGENERIC;
- }
- p_context->width = p_enc->fmt_in.video.i_width;
- p_context->height = p_enc->fmt_in.video.i_height;
- p_context->frame_rate = p_enc->fmt_in.video.i_frame_rate;
- p_context->frame_rate_base= p_enc->fmt_in.video.i_frame_rate_base;
- /* Defaults from ffmpeg.c */
- p_context->qblur = 0.5;
- p_context->qcompress = 0.5;
- p_context->b_quant_offset = 1.25;
- p_context->b_quant_factor = 1.25;
- p_context->i_quant_offset = 0.0;
- p_context->i_quant_factor = -0.8;
- if( p_sys->i_key_int > 0 )
- p_context->gop_size = p_sys->i_key_int;
- p_context->max_b_frames =
- __MAX( __MIN( p_sys->i_b_frames, FF_MAX_B_FRAMES ), 0 );
- p_context->b_frame_strategy = 0;
- #if LIBAVCODEC_BUILD >= 4687
- av_reduce( &i_aspect_num, &i_aspect_den,
- p_enc->fmt_in.video.i_aspect,
- VOUT_ASPECT_FACTOR, 1 << 30 /* something big */ );
- av_reduce( &p_context->sample_aspect_ratio.num,
- &p_context->sample_aspect_ratio.den,
- i_aspect_num * (int64_t)p_context->height,
- i_aspect_den * (int64_t)p_context->width, 1 << 30 );
- #else
- p_context->aspect_ratio = ((float)p_enc->fmt_in.video.i_aspect) /
- VOUT_ASPECT_FACTOR;
- #endif
- p_sys->p_buffer_out = malloc( AVCODEC_MAX_VIDEO_FRAME_SIZE );
- p_enc->fmt_in.i_codec = VLC_FOURCC('I','4','2','0');
- if ( p_sys->b_strict_rc )
- {
- p_context->rc_max_rate = p_enc->fmt_out.i_bitrate;
- p_context->rc_buffer_size = p_sys->i_rc_buffer_size;
- p_context->rc_buffer_aggressivity = p_sys->f_rc_buffer_aggressivity;
- }
- if ( p_sys->f_i_quant_factor != 0.0 )
- p_context->i_quant_factor = p_sys->f_i_quant_factor;
- #if LIBAVCODEC_BUILD >= 4690
- p_context->noise_reduction = p_sys->i_noise_reduction;
- #endif
- if ( p_sys->b_mpeg4_matrix )
- {
- p_context->intra_matrix = ff_mpeg4_default_intra_matrix;
- p_context->inter_matrix = ff_mpeg4_default_non_intra_matrix;
- }
- if ( p_sys->b_pre_me )
- {
- p_context->pre_me = 1;
- p_context->me_pre_cmp = FF_CMP_CHROMA;
- }
- if ( p_sys->b_interlace )
- {
- p_context->flags |= CODEC_FLAG_INTERLACED_DCT;
- #if LIBAVCODEC_BUILD >= 4698
- p_context->flags |= CODEC_FLAG_INTERLACED_ME;
- #endif
- }
- if ( p_sys->b_trellis )
- p_context->flags |= CODEC_FLAG_TRELLIS_QUANT;
- #if LIBAVCODEC_BUILD >= 4702
- if ( p_enc->i_threads >= 1 )
- p_context->thread_count = p_enc->i_threads;
- #endif
- if( p_sys->i_vtolerance > 0 )
- p_context->bit_rate_tolerance = p_sys->i_vtolerance;
- if( p_sys->i_qmin > 0 )
- p_context->mb_qmin = p_context->qmin = p_sys->i_qmin;
- if( p_sys->i_qmax > 0 )
- p_context->mb_qmax = p_context->qmax = p_sys->i_qmax;
- p_context->max_qdiff = 3;
- p_context->mb_decision = p_sys->i_hq;
- if( p_sys->i_quality )
- {
- p_context->flags |= CODEC_FLAG_QSCALE;
- #if LIBAVCODEC_BUILD >= 4668
- p_context->global_quality = p_sys->i_quality;
- #endif
- }
- }
- else if( p_enc->fmt_in.i_cat == AUDIO_ES )
- {
- p_enc->fmt_in.i_codec = AOUT_FMT_S16_NE;
- p_context->sample_rate = p_enc->fmt_in.audio.i_rate;
- p_context->channels = p_enc->fmt_in.audio.i_channels;
- }
- /* Misc parameters */
- p_context->bit_rate = p_enc->fmt_out.i_bitrate;
- if( i_codec_id == CODEC_ID_RAWVIDEO )
- {
- /* XXX: hack: Force same codec (will be handled by transcode) */
- p_enc->fmt_in.i_codec = p_enc->fmt_out.i_codec;
- p_context->pix_fmt = E_(GetFfmpegChroma)( p_enc->fmt_in.i_codec );
- }
- /* Make sure we get extradata filled by the encoder */
- p_context->extradata_size = 0;
- p_context->extradata = NULL;
- p_context->flags |= CODEC_FLAG_GLOBAL_HEADER;
- if( avcodec_open( p_context, p_codec ) )
- {
- if( p_enc->fmt_in.i_cat == AUDIO_ES && p_context->channels > 2 )
- {
- p_context->channels = 2;
- p_enc->fmt_in.audio.i_channels = 2; // FIXME
- if( avcodec_open( p_context, p_codec ) )
- {
- msg_Err( p_enc, "cannot open encoder" );
- free( p_sys );
- return VLC_EGENERIC;
- }
- msg_Warn( p_enc, "stereo mode selected (codec limitation)" );
- }
- else
- {
- msg_Err( p_enc, "cannot open encoder" );
- free( p_sys );
- return VLC_EGENERIC;
- }
- }
- p_enc->fmt_out.i_extra = p_context->extradata_size;
- p_enc->fmt_out.p_extra = p_context->extradata;
- p_context->flags &= ~CODEC_FLAG_GLOBAL_HEADER;
- if( p_enc->fmt_in.i_cat == AUDIO_ES )
- {
- p_sys->p_buffer_out = malloc( 2 * AVCODEC_MAX_AUDIO_FRAME_SIZE );
- p_sys->i_frame_size = p_context->frame_size * 2 * p_context->channels;
- p_sys->p_buffer = malloc( p_sys->i_frame_size );
- }
- msg_Dbg( p_enc, "found encoder %s", psz_namecodec );
- return VLC_SUCCESS;
- }
- /****************************************************************************
- * Ffmpeg threading system
- ****************************************************************************/
- #if LIBAVCODEC_BUILD >= 4702
- static int FfmpegThread( struct thread_context_t *p_context )
- {
- while ( !p_context->b_die && !p_context->b_error )
- {
- vlc_mutex_lock( &p_context->lock );
- while ( !p_context->b_work && !p_context->b_die && !p_context->b_error )
- {
- vlc_cond_wait( &p_context->cond, &p_context->lock );
- }
- p_context->b_work = 0;
- vlc_mutex_unlock( &p_context->lock );
- if ( p_context->b_die || p_context->b_error )
- break;
- if ( p_context->pf_func )
- {
- p_context->i_ret = p_context->pf_func( p_context->p_context,
- p_context->arg );
- }
- vlc_mutex_lock( &p_context->lock );
- p_context->b_done = 1;
- vlc_cond_signal( &p_context->cond );
- vlc_mutex_unlock( &p_context->lock );
- }
- return 0;
- }
- static int FfmpegExecute( AVCodecContext *s,
- int (*pf_func)(AVCodecContext *c2, void *arg2),
- void **arg, int *ret, int count )
- {
- struct thread_context_t ** pp_contexts =
- (struct thread_context_t **)s->thread_opaque;
- int i;
- /* Note, we can be certain that this is not called with the same
- * AVCodecContext by different threads at the same time */
- for ( i = 0; i < count; i++ )
- {
- vlc_mutex_lock( &pp_contexts[i]->lock );
- pp_contexts[i]->arg = arg[i];
- pp_contexts[i]->pf_func = pf_func;
- pp_contexts[i]->i_ret = 12345;
- pp_contexts[i]->b_work = 1;
- vlc_cond_signal( &pp_contexts[i]->cond );
- vlc_mutex_unlock( &pp_contexts[i]->lock );
- }
- for ( i = 0; i < count; i++ )
- {
- vlc_mutex_lock( &pp_contexts[i]->lock );
- while ( !pp_contexts[i]->b_done )
- {
- vlc_cond_wait( &pp_contexts[i]->cond, &pp_contexts[i]->lock );
- }
- pp_contexts[i]->b_done = 0;
- pp_contexts[i]->pf_func = NULL;
- vlc_mutex_unlock( &pp_contexts[i]->lock );
- if ( ret )
- {
- ret[i] = pp_contexts[i]->i_ret;
- }
- }
- return 0;
- }
- #endif
- /****************************************************************************
- * EncodeVideo: the whole thing
- ****************************************************************************/
- static block_t *EncodeVideo( encoder_t *p_enc, picture_t *p_pict )
- {
- encoder_sys_t *p_sys = p_enc->p_sys;
- AVFrame frame;
- int i_out, i_plane;
- #if LIBAVCODEC_BUILD >= 4702
- if ( !p_sys->b_inited && p_enc->i_threads >= 1 )
- {
- struct thread_context_t ** pp_contexts;
- int i;
- p_sys->b_inited = 1;
- pp_contexts = malloc( sizeof(struct thread_context_t *)
- * p_enc->i_threads );
- p_sys->p_context->thread_opaque = (void *)pp_contexts;
- for ( i = 0; i < p_enc->i_threads; i++ )
- {
- pp_contexts[i] = vlc_object_create( p_enc,
- sizeof(struct thread_context_t) );
- pp_contexts[i]->p_context = p_sys->p_context;
- vlc_mutex_init( p_enc, &pp_contexts[i]->lock );
- vlc_cond_init( p_enc, &pp_contexts[i]->cond );
- pp_contexts[i]->b_work = 0;
- pp_contexts[i]->b_done = 0;
- if ( vlc_thread_create( pp_contexts[i], "encoder", FfmpegThread,
- VLC_THREAD_PRIORITY_VIDEO, VLC_FALSE ) )
- {
- msg_Err( p_enc, "cannot spawn encoder thread, expect to die soon" );
- return NULL;
- }
- }
- p_sys->p_context->execute = FfmpegExecute;
- }
- #endif
- memset( &frame, 0, sizeof( AVFrame ) );
- for( i_plane = 0; i_plane < p_pict->i_planes; i_plane++ )
- {
- frame.data[i_plane] = p_pict->p[i_plane].p_pixels;
- frame.linesize[i_plane] = p_pict->p[i_plane].i_pitch;
- }
- /* Let ffmpeg select the frame type */
- frame.pict_type = 0;
- frame.repeat_pict = 2 - p_pict->i_nb_fields;
- #if LIBAVCODEC_BUILD >= 4685
- frame.interlaced_frame = !p_pict->b_progressive;
- frame.top_field_first = !!p_pict->b_top_field_first;
- #endif
- #if LIBAVCODEC_BUILD < 4702
- /* Set the pts of the frame being encoded (segfaults with mpeg4!)*/
- if( p_enc->fmt_out.i_codec == VLC_FOURCC( 'm', 'p', 'g', 'v' ) ||
- p_enc->fmt_out.i_codec == VLC_FOURCC( 'm', 'p', '1', 'v' ) ||
- p_enc->fmt_out.i_codec == VLC_FOURCC( 'm', 'p', '2', 'v' ) )
- #else
- if( 1 )
- #endif
- {
- frame.pts = p_pict->date ? p_pict->date : AV_NOPTS_VALUE;
- if ( p_sys->b_hurry_up && frame.pts != AV_NOPTS_VALUE )
- {
- mtime_t current_date = mdate();
- if ( current_date + HURRY_UP_GUARD3 > frame.pts )
- {
- p_sys->p_context->mb_decision = FF_MB_DECISION_SIMPLE;
- p_sys->p_context->flags &= ~CODEC_FLAG_TRELLIS_QUANT;
- msg_Dbg( p_enc, "hurry up mode 3" );
- }
- else
- {
- p_sys->p_context->mb_decision = p_sys->i_hq;
- if ( current_date + HURRY_UP_GUARD2 > frame.pts )
- {
- p_sys->p_context->flags &= ~CODEC_FLAG_TRELLIS_QUANT;
- #if LIBAVCODEC_BUILD >= 4690
- p_sys->p_context->noise_reduction = p_sys->i_noise_reduction
- + (HURRY_UP_GUARD2 + current_date - frame.pts) / 500;
- #endif
- msg_Dbg( p_enc, "hurry up mode 2" );
- }
- else
- {
- if ( p_sys->b_trellis )
- p_sys->p_context->flags |= CODEC_FLAG_TRELLIS_QUANT;
- #if LIBAVCODEC_BUILD >= 4690
- p_sys->p_context->noise_reduction =
- p_sys->i_noise_reduction;
- #endif
- }
- }
- if ( current_date + HURRY_UP_GUARD1 > frame.pts )
- {
- frame.pict_type = FF_P_TYPE;
- /* msg_Dbg( p_enc, "hurry up mode 1 %lld", current_date + HURRY_UP_GUARD1 - frame.pts ); */
- }
- }
- }
- else
- {
- frame.pts = AV_NOPTS_VALUE;
- }
- if ( frame.pts != AV_NOPTS_VALUE && frame.pts != 0 )
- {
- if ( p_sys->i_last_pts == frame.pts )
- {
- msg_Warn( p_enc, "almost fed libavcodec with two frames with the "
- "same PTS (" I64Fd ")", frame.pts );
- return NULL;
- }
- else if ( p_sys->i_last_pts > frame.pts )
- {
- msg_Warn( p_enc, "almost fed libavcodec with a frame in the "
- "past (current: " I64Fd ", last: "I64Fd")",
- frame.pts, p_sys->i_last_pts );
- return NULL;
- }
- else
- {
- p_sys->i_last_pts = frame.pts;
- }
- }
- frame.quality = p_sys->i_quality;
- /* Ugly work-around for stupid libavcodec behaviour */
- #if LIBAVCODEC_BUILD >= 4722
- p_sys->i_framenum++;
- p_sys->pi_delay_pts[p_sys->i_framenum % MAX_FRAME_DELAY] = frame.pts;
- frame.pts = p_sys->i_framenum * AV_TIME_BASE *
- p_enc->fmt_in.video.i_frame_rate_base;
- frame.pts += p_enc->fmt_in.video.i_frame_rate - 1;
- frame.pts /= p_enc->fmt_in.video.i_frame_rate;
- #endif
- /* End work-around */
- i_out = avcodec_encode_video( p_sys->p_context, p_sys->p_buffer_out,
- AVCODEC_MAX_VIDEO_FRAME_SIZE, &frame );
- if( i_out > 0 )
- {
- block_t *p_block = block_New( p_enc, i_out );
- memcpy( p_block->p_buffer, p_sys->p_buffer_out, i_out );
- /* FIXME, 3-2 pulldown is not handled correctly */
- p_block->i_length = I64C(1000000) *
- p_enc->fmt_in.video.i_frame_rate_base /
- p_enc->fmt_in.video.i_frame_rate;
- if( !p_sys->p_context->max_b_frames || !p_sys->p_context->delay )
- {
- /* No delay -> output pts == input pts */
- p_block->i_pts = p_block->i_dts = p_pict->date;
- }
- else if( p_sys->p_context->coded_frame->pts != AV_NOPTS_VALUE &&
- p_sys->p_context->coded_frame->pts != 0 &&
- p_sys->i_buggy_pts_detect != p_sys->p_context->coded_frame->pts )
- {
- p_sys->i_buggy_pts_detect = p_sys->p_context->coded_frame->pts;
- p_block->i_pts = p_sys->p_context->coded_frame->pts;
- /* Ugly work-around for stupid libavcodec behaviour */
- #if LIBAVCODEC_BUILD >= 4722
- {
- int64_t i_framenum = p_block->i_pts *
- p_enc->fmt_in.video.i_frame_rate /
- p_enc->fmt_in.video.i_frame_rate_base / AV_TIME_BASE;
- p_block->i_pts = p_sys->pi_delay_pts[i_framenum % MAX_FRAME_DELAY];
- }
- #endif
- /* End work-around */
- if( p_sys->p_context->coded_frame->pict_type != FF_I_TYPE &&
- p_sys->p_context->coded_frame->pict_type != FF_P_TYPE )
- {
- p_block->i_dts = p_block->i_pts;
- }
- else
- {
- if( p_sys->i_last_ref_pts )
- {
- p_block->i_dts = p_sys->i_last_ref_pts;
- }
- else
- {
- /* Let's put something sensible */
- p_block->i_dts = p_block->i_pts;
- }
- p_sys->i_last_ref_pts = p_block->i_pts;
- }
- }
- else
- {
- /* Buggy libavcodec which doesn't update coded_frame->pts
- * correctly */
- p_block->i_dts = p_block->i_pts = p_pict->date;
- }
- switch ( p_sys->p_context->coded_frame->pict_type )
- {
- case FF_I_TYPE:
- p_block->i_flags |= BLOCK_FLAG_TYPE_I;
- break;
- case FF_P_TYPE:
- p_block->i_flags |= BLOCK_FLAG_TYPE_P;
- break;
- case FF_B_TYPE:
- p_block->i_flags |= BLOCK_FLAG_TYPE_B;
- break;
- }
- return p_block;
- }
- return NULL;
- }
- /****************************************************************************
- * EncodeAudio: the whole thing
- ****************************************************************************/
- static block_t *EncodeAudio( encoder_t *p_enc, aout_buffer_t *p_aout_buf )
- {
- encoder_sys_t *p_sys = p_enc->p_sys;
- block_t *p_block, *p_chain = NULL;
- char *p_buffer = p_aout_buf->p_buffer;
- int i_samples = p_aout_buf->i_nb_samples;
- int i_samples_delay = p_sys->i_samples_delay;
- p_sys->i_pts = p_aout_buf->start_date -
- (mtime_t)1000000 * (mtime_t)p_sys->i_samples_delay /
- (mtime_t)p_enc->fmt_in.audio.i_rate;
- p_sys->i_samples_delay += i_samples;
- while( p_sys->i_samples_delay >= p_sys->p_context->frame_size )
- {
- int16_t *p_samples;
- int i_out;
- if( i_samples_delay )
- {
- /* Take care of the left-over from last time */
- int i_delay_size = i_samples_delay * 2 *
- p_sys->p_context->channels;
- int i_size = p_sys->i_frame_size - i_delay_size;
- p_samples = (int16_t *)p_sys->p_buffer;
- memcpy( p_sys->p_buffer + i_delay_size, p_buffer, i_size );
- p_buffer -= i_delay_size;
- i_samples += i_samples_delay;
- i_samples_delay = 0;
- }
- else
- {
- p_samples = (int16_t *)p_buffer;
- }
- i_out = avcodec_encode_audio( p_sys->p_context, p_sys->p_buffer_out,
- 2 * AVCODEC_MAX_AUDIO_FRAME_SIZE,
- p_samples );
- #if 0
- msg_Warn( p_enc, "avcodec_encode_audio: %d", i_out );
- #endif
- if( i_out < 0 ) break;
- p_buffer += p_sys->i_frame_size;
- p_sys->i_samples_delay -= p_sys->p_context->frame_size;
- i_samples -= p_sys->p_context->frame_size;
- if( i_out == 0 ) continue;
- p_block = block_New( p_enc, i_out );
- memcpy( p_block->p_buffer, p_sys->p_buffer_out, i_out );
- p_block->i_length = (mtime_t)1000000 *
- (mtime_t)p_sys->p_context->frame_size /
- (mtime_t)p_sys->p_context->sample_rate;
- p_block->i_dts = p_block->i_pts = p_sys->i_pts;
- /* Update pts */
- p_sys->i_pts += p_block->i_length;
- block_ChainAppend( &p_chain, p_block );
- }
- /* Backup the remaining raw samples */
- if( i_samples )
- {
- memcpy( p_sys->p_buffer + i_samples_delay * 2 *
- p_sys->p_context->channels, p_buffer,
- i_samples * 2 * p_sys->p_context->channels );
- }
- return p_chain;
- }
- /*****************************************************************************
- * CloseEncoder: ffmpeg encoder destruction
- *****************************************************************************/
- void E_(CloseEncoder)( vlc_object_t *p_this )
- {
- encoder_t *p_enc = (encoder_t *)p_this;
- encoder_sys_t *p_sys = p_enc->p_sys;
- #if LIBAVCODEC_BUILD >= 4702
- if ( p_sys->b_inited && p_enc->i_threads >= 1 )
- {
- int i;
- struct thread_context_t ** pp_contexts =
- (struct thread_context_t **)p_sys->p_context->thread_opaque;
- for ( i = 0; i < p_enc->i_threads; i++ )
- {
- pp_contexts[i]->b_die = 1;
- vlc_cond_signal( &pp_contexts[i]->cond );
- vlc_thread_join( pp_contexts[i] );
- vlc_mutex_destroy( &pp_contexts[i]->lock );
- vlc_cond_destroy( &pp_contexts[i]->cond );
- vlc_object_destroy( pp_contexts[i] );
- }
- free( pp_contexts );
- }
- #endif
- avcodec_close( p_sys->p_context );
- av_free( p_sys->p_context );
- if( p_sys->p_buffer ) free( p_sys->p_buffer );
- if( p_sys->p_buffer_out ) free( p_sys->p_buffer_out );
- free( p_sys );
- }