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vlc/modules/stream_out/transcode/video.c

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/*****************************************************************************
* video.c: transcoding stream output module (video)
*****************************************************************************
* Copyright (C) 2003-2009 VLC authors and VideoLAN
* $Id$
*
* Authors: Laurent Aimar <fenrir@via.ecp.fr>
* Gildas Bazin <gbazin@videolan.org>
* Jean-Paul Saman <jpsaman #_at_# m2x dot nl>
* Antoine Cellerier <dionoea at videolan dot org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#include "transcode.h"
#include <math.h>
#include <vlc_meta.h>
#include <vlc_spu.h>
#include <vlc_modules.h>
#define ENC_FRAMERATE (25 * 1000)
#define ENC_FRAMERATE_BASE 1000
struct decoder_owner_sys_t
{
sout_stream_sys_t *p_sys;
};
static void video_del_buffer_decoder( decoder_t *p_decoder, picture_t *p_pic )
{
VLC_UNUSED(p_decoder);
picture_Release( p_pic );
}
static void video_unlink_picture_decoder( decoder_t *p_dec, picture_t *p_pic )
{
VLC_UNUSED(p_dec);
picture_Release( p_pic );
}
static int video_update_format_decoder( decoder_t *p_dec )
{
p_dec->fmt_out.video.i_chroma = p_dec->fmt_out.i_codec;
return 0;
}
static picture_t *video_new_buffer_decoder( decoder_t *p_dec )
{
return picture_NewFromFormat( &p_dec->fmt_out.video );
}
static picture_t *video_new_buffer_encoder( encoder_t *p_enc )
{
p_enc->fmt_in.video.i_chroma = p_enc->fmt_in.i_codec;
return picture_NewFromFormat( &p_enc->fmt_in.video );
}
static picture_t *transcode_video_filter_buffer_new( filter_t *p_filter )
{
p_filter->fmt_out.video.i_chroma = p_filter->fmt_out.i_codec;
return picture_NewFromFormat( &p_filter->fmt_out.video );
}
static void* EncoderThread( void *obj )
{
sout_stream_sys_t *p_sys = (sout_stream_sys_t*)obj;
sout_stream_id_sys_t *id = p_sys->id_video;
picture_t *p_pic = NULL;
int canc = vlc_savecancel ();
block_t *p_block = NULL;
for( ;; )
{
vlc_mutex_lock( &p_sys->lock_out );
while( !p_sys->b_abort &&
(p_pic = picture_fifo_Pop( p_sys->pp_pics )) == NULL )
vlc_cond_wait( &p_sys->cond, &p_sys->lock_out );
if( p_sys->b_abort && !p_pic )
{
vlc_mutex_unlock( &p_sys->lock_out );
break;
}
vlc_mutex_unlock( &p_sys->lock_out );
if( p_pic )
{
p_block = id->p_encoder->pf_encode_video( id->p_encoder, p_pic );
vlc_mutex_lock( &p_sys->lock_out );
block_ChainAppend( &p_sys->p_buffers, p_block );
vlc_mutex_unlock( &p_sys->lock_out );
picture_Release( p_pic );
}
vlc_mutex_lock( &p_sys->lock_out );
if( p_sys->b_abort )
{
vlc_mutex_unlock( &p_sys->lock_out );
break;
}
vlc_mutex_unlock( &p_sys->lock_out );
}
/*Encode what we have in the buffer on closing*/
vlc_mutex_lock( &p_sys->lock_out );
while( (p_pic = picture_fifo_Pop( p_sys->pp_pics )) != NULL )
{
p_block = id->p_encoder->pf_encode_video( id->p_encoder, p_pic );
block_ChainAppend( &p_sys->p_buffers, p_block );
picture_Release( p_pic );
}
/*Now flush encoder*/
do {
p_block = id->p_encoder->pf_encode_video(id->p_encoder, NULL );
block_ChainAppend( &p_sys->p_buffers, p_block );
} while( p_block );
vlc_mutex_unlock( &p_sys->lock_out );
vlc_restorecancel (canc);
return NULL;
}
int transcode_video_new( sout_stream_t *p_stream, sout_stream_id_sys_t *id )
{
sout_stream_sys_t *p_sys = p_stream->p_sys;
/* Open decoder
* Initialization of decoder structures
*/
id->p_decoder->fmt_out = id->p_decoder->fmt_in;
id->p_decoder->fmt_out.i_extra = 0;
id->p_decoder->fmt_out.p_extra = 0;
id->p_decoder->pf_decode_video = NULL;
id->p_decoder->pf_get_cc = NULL;
id->p_decoder->pf_get_cc = 0;
id->p_decoder->pf_vout_format_update = video_update_format_decoder;
id->p_decoder->pf_vout_buffer_new = video_new_buffer_decoder;
id->p_decoder->pf_vout_buffer_del = video_del_buffer_decoder;
id->p_decoder->pf_picture_unlink = video_unlink_picture_decoder;
id->p_decoder->p_owner = malloc( sizeof(decoder_owner_sys_t) );
if( !id->p_decoder->p_owner )
return VLC_EGENERIC;
id->p_decoder->p_owner->p_sys = p_sys;
/* id->p_decoder->p_cfg = p_sys->p_video_cfg; */
id->p_decoder->p_module =
module_need( id->p_decoder, "decoder", "$codec", false );
if( !id->p_decoder->p_module )
{
msg_Err( p_stream, "cannot find video decoder" );
free( id->p_decoder->p_owner );
return VLC_EGENERIC;
}
/*
* Open encoder.
* Because some info about the decoded input will only be available
* once the first frame is decoded, we actually only test the availability
* of the encoder here.
*/
/* Initialization of encoder format structures */
es_format_Init( &id->p_encoder->fmt_in, id->p_decoder->fmt_in.i_cat,
id->p_decoder->fmt_out.i_codec );
id->p_encoder->fmt_in.video.i_chroma = id->p_decoder->fmt_out.i_codec;
/* The dimensions will be set properly later on.
* Just put sensible values so we can test an encoder is available. */
id->p_encoder->fmt_in.video.i_width =
id->p_encoder->fmt_out.video.i_width
? id->p_encoder->fmt_out.video.i_width
: id->p_decoder->fmt_in.video.i_width
? id->p_decoder->fmt_in.video.i_width : 16;
id->p_encoder->fmt_in.video.i_height =
id->p_encoder->fmt_out.video.i_height
? id->p_encoder->fmt_out.video.i_height
: id->p_decoder->fmt_in.video.i_height
? id->p_decoder->fmt_in.video.i_height : 16;
id->p_encoder->fmt_in.video.i_visible_width =
id->p_encoder->fmt_out.video.i_visible_width
? id->p_encoder->fmt_out.video.i_visible_width
: id->p_decoder->fmt_in.video.i_visible_width
? id->p_decoder->fmt_in.video.i_visible_width : id->p_encoder->fmt_in.video.i_width;
id->p_encoder->fmt_in.video.i_visible_height =
id->p_encoder->fmt_out.video.i_visible_height
? id->p_encoder->fmt_out.video.i_visible_height
: id->p_decoder->fmt_in.video.i_visible_height
? id->p_decoder->fmt_in.video.i_visible_height : id->p_encoder->fmt_in.video.i_height;
id->p_encoder->i_threads = p_sys->i_threads;
id->p_encoder->p_cfg = p_sys->p_video_cfg;
id->p_encoder->p_module =
module_need( id->p_encoder, "encoder", p_sys->psz_venc, true );
if( !id->p_encoder->p_module )
{
msg_Err( p_stream, "cannot find video encoder (module:%s fourcc:%4.4s). Take a look few lines earlier to see possible reason.",
p_sys->psz_venc ? p_sys->psz_venc : "any",
(char *)&p_sys->i_vcodec );
module_unneed( id->p_decoder, id->p_decoder->p_module );
id->p_decoder->p_module = 0;
free( id->p_decoder->p_owner );
return VLC_EGENERIC;
}
/* Close the encoder.
* We'll open it only when we have the first frame. */
module_unneed( id->p_encoder, id->p_encoder->p_module );
if( id->p_encoder->fmt_out.p_extra )
{
free( id->p_encoder->fmt_out.p_extra );
id->p_encoder->fmt_out.p_extra = NULL;
id->p_encoder->fmt_out.i_extra = 0;
}
id->p_encoder->p_module = NULL;
if( p_sys->i_threads >= 1 )
{
int i_priority = p_sys->b_high_priority ? VLC_THREAD_PRIORITY_OUTPUT :
VLC_THREAD_PRIORITY_VIDEO;
p_sys->id_video = id;
vlc_mutex_init( &p_sys->lock_out );
vlc_cond_init( &p_sys->cond );
p_sys->pp_pics = picture_fifo_New();
if( p_sys->pp_pics == NULL )
{
msg_Err( p_stream, "cannot create picture fifo" );
vlc_mutex_destroy( &p_sys->lock_out );
vlc_cond_destroy( &p_sys->cond );
module_unneed( id->p_decoder, id->p_decoder->p_module );
id->p_decoder->p_module = NULL;
free( id->p_decoder->p_owner );
return VLC_ENOMEM;
}
p_sys->p_buffers = NULL;
p_sys->b_abort = false;
if( vlc_clone( &p_sys->thread, EncoderThread, p_sys, i_priority ) )
{
msg_Err( p_stream, "cannot spawn encoder thread" );
vlc_mutex_destroy( &p_sys->lock_out );
vlc_cond_destroy( &p_sys->cond );
picture_fifo_Delete( p_sys->pp_pics );
module_unneed( id->p_decoder, id->p_decoder->p_module );
id->p_decoder->p_module = NULL;
free( id->p_decoder->p_owner );
return VLC_EGENERIC;
}
}
return VLC_SUCCESS;
}
static void transcode_video_filter_init( sout_stream_t *p_stream,
sout_stream_id_sys_t *id )
{
filter_owner_t owner = {
.sys = p_stream->p_sys,
.video = {
.buffer_new = transcode_video_filter_buffer_new,
},
};
es_format_t *p_fmt_out = &id->p_decoder->fmt_out;
id->p_encoder->fmt_in.video.i_chroma = id->p_encoder->fmt_in.i_codec;
id->p_f_chain = filter_chain_NewVideo( p_stream, false, &owner );
filter_chain_Reset( id->p_f_chain, p_fmt_out, p_fmt_out );
/* Deinterlace */
if( p_stream->p_sys->b_deinterlace )
{
filter_chain_AppendFilter( id->p_f_chain,
p_stream->p_sys->psz_deinterlace,
p_stream->p_sys->p_deinterlace_cfg,
&id->p_decoder->fmt_out,
&id->p_decoder->fmt_out );
p_fmt_out = filter_chain_GetFmtOut( id->p_f_chain );
}
/* Check that we have visible_width/height*/
if( !p_fmt_out->video.i_visible_height )
p_fmt_out->video.i_visible_height = p_fmt_out->video.i_height;
if( !p_fmt_out->video.i_visible_width )
p_fmt_out->video.i_visible_width = p_fmt_out->video.i_width;
if( p_stream->p_sys->psz_vf2 )
{
id->p_uf_chain = filter_chain_NewVideo( p_stream, true, &owner );
filter_chain_Reset( id->p_uf_chain, p_fmt_out,
&id->p_encoder->fmt_in );
if( p_fmt_out->video.i_chroma != id->p_encoder->fmt_in.video.i_chroma )
{
filter_chain_AppendFilter( id->p_uf_chain,
NULL, NULL,
p_fmt_out,
&id->p_encoder->fmt_in );
}
filter_chain_AppendFromString( id->p_uf_chain, p_stream->p_sys->psz_vf2 );
p_fmt_out = filter_chain_GetFmtOut( id->p_uf_chain );
es_format_Copy( &id->p_encoder->fmt_in, p_fmt_out );
id->p_encoder->fmt_out.video.i_width =
id->p_encoder->fmt_in.video.i_width;
id->p_encoder->fmt_out.video.i_height =
id->p_encoder->fmt_in.video.i_height;
id->p_encoder->fmt_out.video.i_sar_num =
id->p_encoder->fmt_in.video.i_sar_num;
id->p_encoder->fmt_out.video.i_sar_den =
id->p_encoder->fmt_in.video.i_sar_den;
}
}
/* Take care of the scaling and chroma conversions. */
static void conversion_video_filter_append( sout_stream_id_sys_t *id )
{
const es_format_t *p_fmt_out = &id->p_decoder->fmt_out;
if( id->p_f_chain )
p_fmt_out = filter_chain_GetFmtOut( id->p_f_chain );
if( id->p_uf_chain )
p_fmt_out = filter_chain_GetFmtOut( id->p_uf_chain );
if( ( p_fmt_out->video.i_chroma != id->p_encoder->fmt_in.video.i_chroma ) ||
( p_fmt_out->video.i_width != id->p_encoder->fmt_in.video.i_width ) ||
( p_fmt_out->video.i_height != id->p_encoder->fmt_in.video.i_height ) )
{
filter_chain_AppendFilter( id->p_uf_chain ? id->p_uf_chain : id->p_f_chain,
NULL, NULL,
p_fmt_out,
&id->p_encoder->fmt_in );
}
}
static void transcode_video_encoder_init( sout_stream_t *p_stream,
sout_stream_id_sys_t *id )
{
sout_stream_sys_t *p_sys = p_stream->p_sys;
const es_format_t *p_fmt_out = &id->p_decoder->fmt_out;
if( id->p_f_chain ) {
p_fmt_out = filter_chain_GetFmtOut( id->p_f_chain );
}
if( id->p_uf_chain ) {
p_fmt_out = filter_chain_GetFmtOut( id->p_uf_chain );
}
/* Calculate scaling
* width/height of source */
int i_src_visible_width = p_fmt_out->video.i_visible_width;
int i_src_visible_height = p_fmt_out->video.i_visible_height;
if (i_src_visible_width == 0)
i_src_visible_width = p_fmt_out->video.i_width;
if (i_src_visible_height == 0)
i_src_visible_height = p_fmt_out->video.i_height;
/* with/height scaling */
float f_scale_width = 1;
float f_scale_height = 1;
/* aspect ratio */
float f_aspect = (double)p_fmt_out->video.i_sar_num *
p_fmt_out->video.i_width /
p_fmt_out->video.i_sar_den /
p_fmt_out->video.i_height;
msg_Dbg( p_stream, "decoder aspect is %f:1", (double) f_aspect );
/* Change f_aspect from source frame to source pixel */
f_aspect = f_aspect * i_src_visible_height / i_src_visible_width;
msg_Dbg( p_stream, "source pixel aspect is %f:1", (double) f_aspect );
/* Calculate scaling factor for specified parameters */
if( id->p_encoder->fmt_out.video.i_visible_width <= 0 &&
id->p_encoder->fmt_out.video.i_visible_height <= 0 && p_sys->f_scale )
{
/* Global scaling. Make sure width will remain a factor of 16 */
float f_real_scale;
int i_new_height;
int i_new_width = i_src_visible_width * p_sys->f_scale;
if( i_new_width % 16 <= 7 && i_new_width >= 16 )
i_new_width -= i_new_width % 16;
else
i_new_width += 16 - i_new_width % 16;
f_real_scale = (float)( i_new_width ) / (float) i_src_visible_width;
i_new_height = __MAX( 16, i_src_visible_height * (float)f_real_scale );
f_scale_width = f_real_scale;
f_scale_height = (float) i_new_height / (float) i_src_visible_height;
}
else if( id->p_encoder->fmt_out.video.i_visible_width > 0 &&
id->p_encoder->fmt_out.video.i_visible_height <= 0 )
{
/* Only width specified */
f_scale_width = (float)id->p_encoder->fmt_out.video.i_visible_width/i_src_visible_width;
f_scale_height = f_scale_width;
}
else if( id->p_encoder->fmt_out.video.i_visible_width <= 0 &&
id->p_encoder->fmt_out.video.i_visible_height > 0 )
{
/* Only height specified */
f_scale_height = (float)id->p_encoder->fmt_out.video.i_visible_height/i_src_visible_height;
f_scale_width = f_scale_height;
}
else if( id->p_encoder->fmt_out.video.i_visible_width > 0 &&
id->p_encoder->fmt_out.video.i_visible_height > 0 )
{
/* Width and height specified */
f_scale_width = (float)id->p_encoder->fmt_out.video.i_visible_width/i_src_visible_width;
f_scale_height = (float)id->p_encoder->fmt_out.video.i_visible_height/i_src_visible_height;
}
/* check maxwidth and maxheight */
if( p_sys->i_maxwidth && f_scale_width > (float)p_sys->i_maxwidth /
i_src_visible_width )
{
f_scale_width = (float)p_sys->i_maxwidth / i_src_visible_width;
}
if( p_sys->i_maxheight && f_scale_height > (float)p_sys->i_maxheight /
i_src_visible_height )
{
f_scale_height = (float)p_sys->i_maxheight / i_src_visible_height;
}
/* Change aspect ratio from source pixel to scaled pixel */
f_aspect = f_aspect * f_scale_height / f_scale_width;
msg_Dbg( p_stream, "scaled pixel aspect is %f:1", (double) f_aspect );
/* f_scale_width and f_scale_height are now final */
/* Calculate width, height from scaling
* Make sure its multiple of 2
*/
/* width/height of output stream */
int i_dst_visible_width = 2 * lroundf(f_scale_width*i_src_visible_width/2);
int i_dst_visible_height = 2 * lroundf(f_scale_height*i_src_visible_height/2);
int i_dst_width = 2 * lroundf(f_scale_width*p_fmt_out->video.i_width/2);
int i_dst_height = 2 * lroundf(f_scale_height*p_fmt_out->video.i_height/2);
/* Change aspect ratio from scaled pixel to output frame */
f_aspect = f_aspect * i_dst_visible_width / i_dst_visible_height;
/* Store calculated values */
id->p_encoder->fmt_out.video.i_width = i_dst_width;
id->p_encoder->fmt_out.video.i_visible_width = i_dst_visible_width;
id->p_encoder->fmt_out.video.i_height = i_dst_height;
id->p_encoder->fmt_out.video.i_visible_height = i_dst_visible_height;
id->p_encoder->fmt_in.video.i_width = i_dst_width;
id->p_encoder->fmt_in.video.i_visible_width = i_dst_visible_width;
id->p_encoder->fmt_in.video.i_height = i_dst_height;
id->p_encoder->fmt_in.video.i_visible_height = i_dst_visible_height;
msg_Dbg( p_stream, "source %ix%i, destination %ix%i",
i_src_visible_width, i_src_visible_height,
i_dst_visible_width, i_dst_visible_height
);
/* Handle frame rate conversion */
if( !id->p_encoder->fmt_out.video.i_frame_rate ||
!id->p_encoder->fmt_out.video.i_frame_rate_base )
{
if( p_fmt_out->video.i_frame_rate &&
p_fmt_out->video.i_frame_rate_base )
{
id->p_encoder->fmt_out.video.i_frame_rate =
p_fmt_out->video.i_frame_rate;
id->p_encoder->fmt_out.video.i_frame_rate_base =
p_fmt_out->video.i_frame_rate_base;
}
else
{
/* Pick a sensible default value */
id->p_encoder->fmt_out.video.i_frame_rate = ENC_FRAMERATE;
id->p_encoder->fmt_out.video.i_frame_rate_base = ENC_FRAMERATE_BASE;
}
}
id->p_encoder->fmt_in.video.orientation =
id->p_encoder->fmt_out.video.orientation =
id->p_decoder->fmt_in.video.orientation;
id->p_encoder->fmt_in.video.i_frame_rate =
id->p_encoder->fmt_out.video.i_frame_rate;
id->p_encoder->fmt_in.video.i_frame_rate_base =
id->p_encoder->fmt_out.video.i_frame_rate_base;
vlc_ureduce( &id->p_encoder->fmt_in.video.i_frame_rate,
&id->p_encoder->fmt_in.video.i_frame_rate_base,
id->p_encoder->fmt_in.video.i_frame_rate,
id->p_encoder->fmt_in.video.i_frame_rate_base,
0 );
msg_Dbg( p_stream, "source fps %d/%d, destination %d/%d",
id->p_decoder->fmt_out.video.i_frame_rate,
id->p_decoder->fmt_out.video.i_frame_rate_base,
id->p_encoder->fmt_in.video.i_frame_rate,
id->p_encoder->fmt_in.video.i_frame_rate_base );
id->i_input_frame_interval = id->p_decoder->fmt_out.video.i_frame_rate_base * CLOCK_FREQ / id->p_decoder->fmt_out.video.i_frame_rate;
msg_Info( p_stream, "input interval %d (base %d)",
id->i_input_frame_interval, id->p_decoder->fmt_out.video.i_frame_rate_base );
id->i_output_frame_interval = id->p_encoder->fmt_in.video.i_frame_rate_base * CLOCK_FREQ / id->p_encoder->fmt_in.video.i_frame_rate;
msg_Info( p_stream, "output interval %d (base %d)",
id->i_output_frame_interval, id->p_encoder->fmt_in.video.i_frame_rate_base );
date_Init( &id->next_input_pts,
id->p_decoder->fmt_out.video.i_frame_rate,
1 );
date_Init( &id->next_output_pts,
id->p_encoder->fmt_in.video.i_frame_rate,
1 );
/* Check whether a particular aspect ratio was requested */
if( id->p_encoder->fmt_out.video.i_sar_num <= 0 ||
id->p_encoder->fmt_out.video.i_sar_den <= 0 )
{
vlc_ureduce( &id->p_encoder->fmt_out.video.i_sar_num,
&id->p_encoder->fmt_out.video.i_sar_den,
(uint64_t)p_fmt_out->video.i_sar_num * i_src_visible_width * i_dst_visible_height,
(uint64_t)p_fmt_out->video.i_sar_den * i_src_visible_height * i_dst_visible_width,
0 );
}
else
{
vlc_ureduce( &id->p_encoder->fmt_out.video.i_sar_num,
&id->p_encoder->fmt_out.video.i_sar_den,
id->p_encoder->fmt_out.video.i_sar_num,
id->p_encoder->fmt_out.video.i_sar_den,
0 );
}
id->p_encoder->fmt_in.video.i_sar_num =
id->p_encoder->fmt_out.video.i_sar_num;
id->p_encoder->fmt_in.video.i_sar_den =
id->p_encoder->fmt_out.video.i_sar_den;
msg_Dbg( p_stream, "encoder aspect is %i:%i",
id->p_encoder->fmt_out.video.i_sar_num * id->p_encoder->fmt_out.video.i_width,
id->p_encoder->fmt_out.video.i_sar_den * id->p_encoder->fmt_out.video.i_height );
}
static int transcode_video_encoder_open( sout_stream_t *p_stream,
sout_stream_id_sys_t *id )
{
sout_stream_sys_t *p_sys = p_stream->p_sys;
msg_Dbg( p_stream, "destination (after video filters) %ix%i",
id->p_encoder->fmt_in.video.i_width,
id->p_encoder->fmt_in.video.i_height );
id->p_encoder->p_module =
module_need( id->p_encoder, "encoder", p_sys->psz_venc, true );
if( !id->p_encoder->p_module )
{
msg_Err( p_stream, "cannot find video encoder (module:%s fourcc:%4.4s)",
p_sys->psz_venc ? p_sys->psz_venc : "any",
(char *)&p_sys->i_vcodec );
return VLC_EGENERIC;
}
id->p_encoder->fmt_in.video.i_chroma = id->p_encoder->fmt_in.i_codec;
/* */
id->p_encoder->fmt_out.i_codec =
vlc_fourcc_GetCodec( VIDEO_ES, id->p_encoder->fmt_out.i_codec );
id->id = sout_StreamIdAdd( p_stream->p_next, &id->p_encoder->fmt_out );
if( !id->id )
{
msg_Err( p_stream, "cannot add this stream" );
return VLC_EGENERIC;
}
return VLC_SUCCESS;
}
void transcode_video_close( sout_stream_t *p_stream,
sout_stream_id_sys_t *id )
{
if( p_stream->p_sys->i_threads >= 1 )
{
vlc_mutex_lock( &p_stream->p_sys->lock_out );
p_stream->p_sys->b_abort = true;
vlc_cond_signal( &p_stream->p_sys->cond );
vlc_mutex_unlock( &p_stream->p_sys->lock_out );
vlc_join( p_stream->p_sys->thread, NULL );
vlc_mutex_destroy( &p_stream->p_sys->lock_out );
vlc_cond_destroy( &p_stream->p_sys->cond );
picture_fifo_Delete( p_stream->p_sys->pp_pics );
block_ChainRelease( p_stream->p_sys->p_buffers );
p_stream->p_sys->pp_pics = NULL;
}
/* Close decoder */
if( id->p_decoder->p_module )
module_unneed( id->p_decoder, id->p_decoder->p_module );
if( id->p_decoder->p_description )
vlc_meta_Delete( id->p_decoder->p_description );
free( id->p_decoder->p_owner );
/* Close encoder */
if( id->p_encoder->p_module )
module_unneed( id->p_encoder, id->p_encoder->p_module );
/* Close filters */
if( id->p_f_chain )
filter_chain_Delete( id->p_f_chain );
if( id->p_uf_chain )
filter_chain_Delete( id->p_uf_chain );
}
static void OutputFrame( sout_stream_t *p_stream, picture_t *p_pic, sout_stream_id_sys_t *id, block_t **out )
{
sout_stream_sys_t *p_sys = p_stream->p_sys;
picture_t *p_pic2 = NULL;
const mtime_t original_date = p_pic->date;
bool b_need_duplicate=false;
/* If input pts is lower than next_output_pts - output_frame_interval
* Then the future input frame should fit better and we can drop this one
*
* We check it here also because we can have case that video filters outputs multiple
* pictures but we don't need to use them all, for example yadif2x and outputting to some
* different fps value
*/
if( ( original_date ) <
( date_Get( &id->next_output_pts ) - (mtime_t)id->i_output_frame_interval ) )
{
#if 0
msg_Dbg( p_stream, "dropping frame (%"PRId64" + %"PRId64" vs %"PRId64")",
p_pic->date, id->i_input_frame_interval, date_Get(&id->next_output_pts) );
#endif
picture_Release( p_pic );
return;
}
/*
* Encoding
*/
/* Check if we have a subpicture to overlay */
if( p_sys->p_spu )
{
video_format_t fmt = id->p_encoder->fmt_in.video;
if( fmt.i_visible_width <= 0 || fmt.i_visible_height <= 0 )
{
fmt.i_visible_width = fmt.i_width;
fmt.i_visible_height = fmt.i_height;
fmt.i_x_offset = 0;
fmt.i_y_offset = 0;
}
subpicture_t *p_subpic = spu_Render( p_sys->p_spu, NULL, &fmt, &fmt,
p_pic->date, p_pic->date, false );
/* Overlay subpicture */
if( p_subpic )
{
if( picture_IsReferenced( p_pic ) && !filter_chain_GetLength( id->p_f_chain ) )
{
/* We can't modify the picture, we need to duplicate it,
* in this point the picture is already p_encoder->fmt.in format*/
picture_t *p_tmp = video_new_buffer_encoder( id->p_encoder );
if( likely( p_tmp ) )
{
picture_Copy( p_tmp, p_pic );
picture_Release( p_pic );
p_pic = p_tmp;
}
}
if( unlikely( !p_sys->p_spu_blend ) )
p_sys->p_spu_blend = filter_NewBlend( VLC_OBJECT( p_sys->p_spu ), &fmt );
if( likely( p_sys->p_spu_blend ) )
picture_BlendSubpicture( p_pic, p_sys->p_spu_blend, p_subpic );
subpicture_Delete( p_subpic );
}
}
/* set output pts*/
p_pic->date = date_Get( &id->next_output_pts );
/*This pts is handled, increase clock to next one*/
date_Increment( &id->next_output_pts, id->p_encoder->fmt_in.video.i_frame_rate_base );
if( p_sys->i_threads == 0 )
{
block_t *p_block;
p_block = id->p_encoder->pf_encode_video( id->p_encoder, p_pic );
block_ChainAppend( out, p_block );
}
/* we need to duplicate while next_output_pts + output_frame_interval < input_pts (next input pts)*/
b_need_duplicate = ( date_Get( &id->next_output_pts ) + id->i_output_frame_interval ) <
( original_date );
if( p_sys->i_threads )
{
if( p_sys->b_master_sync )
{
p_pic2 = video_new_buffer_encoder( id->p_encoder );
if( likely( p_pic2 != NULL ) )
picture_Copy( p_pic2, p_pic );
}
vlc_mutex_lock( &p_sys->lock_out );
picture_fifo_Push( p_sys->pp_pics, p_pic );
vlc_cond_signal( &p_sys->cond );
vlc_mutex_unlock( &p_sys->lock_out );
}
while( (p_sys->b_master_sync && b_need_duplicate ))
{
if( p_sys->i_threads >= 1 )
{
picture_t *p_tmp = NULL;
/* We can't modify the picture, we need to duplicate it */
p_tmp = video_new_buffer_encoder( id->p_encoder );
if( likely( p_tmp != NULL ) )
{
picture_Copy( p_tmp, p_pic2 );
p_tmp->date = date_Get( &id->next_output_pts );
vlc_mutex_lock( &p_sys->lock_out );
picture_fifo_Push( p_sys->pp_pics, p_tmp );
vlc_cond_signal( &p_sys->cond );
vlc_mutex_unlock( &p_sys->lock_out );
}
}
else
{
block_t *p_block;
p_pic->date = date_Get( &id->next_output_pts );
p_block = id->p_encoder->pf_encode_video(id->p_encoder, p_pic);
block_ChainAppend( out, p_block );
}
#if 0
msg_Dbg( p_stream, "duplicated frame");
#endif
date_Increment( &id->next_output_pts, id->p_encoder->fmt_in.video.i_frame_rate_base );
b_need_duplicate = ( date_Get( &id->next_output_pts ) + id->i_output_frame_interval ) <
( original_date );
}
if( p_sys->i_threads && p_pic2 )
picture_Release( p_pic2 );
else if ( p_sys->i_threads == 0 )
picture_Release( p_pic );
}
int transcode_video_process( sout_stream_t *p_stream, sout_stream_id_sys_t *id,
block_t *in, block_t **out )
{
sout_stream_sys_t *p_sys = p_stream->p_sys;
picture_t *p_pic = NULL;
*out = NULL;
if( unlikely( in == NULL ) )
{
if( p_sys->i_threads == 0 )
{
block_t *p_block;
do {
p_block = id->p_encoder->pf_encode_video(id->p_encoder, NULL );
block_ChainAppend( out, p_block );
} while( p_block );
}
else
{
msg_Dbg( p_stream, "Flushing thread and waiting that");
vlc_mutex_lock( &p_stream->p_sys->lock_out );
p_stream->p_sys->b_abort = true;
vlc_cond_signal( &p_stream->p_sys->cond );
vlc_mutex_unlock( &p_stream->p_sys->lock_out );
vlc_join( p_stream->p_sys->thread, NULL );
vlc_mutex_lock( &p_sys->lock_out );
*out = p_sys->p_buffers;
p_sys->p_buffers = NULL;
vlc_mutex_unlock( &p_sys->lock_out );
msg_Dbg( p_stream, "Flushing done");
}
return VLC_SUCCESS;
}
while( (p_pic = id->p_decoder->pf_decode_video( id->p_decoder, &in )) )
{
if( unlikely (
id->p_encoder->p_module &&
!video_format_IsSimilar( &id->fmt_input_video, &id->p_decoder->fmt_out.video )
)
)
{
msg_Info( p_stream, "aspect-ratio changed, reiniting. %i -> %i : %i -> %i.",
id->fmt_input_video.i_sar_num, id->p_decoder->fmt_out.video.i_sar_num,
id->fmt_input_video.i_sar_den, id->p_decoder->fmt_out.video.i_sar_den
);
/* Close filters */
if( id->p_f_chain )
filter_chain_Delete( id->p_f_chain );
id->p_f_chain = NULL;
if( id->p_uf_chain )
filter_chain_Delete( id->p_uf_chain );
id->p_uf_chain = NULL;
/* Reinitialize filters */
id->p_encoder->fmt_out.video.i_visible_width = p_sys->i_width & ~1;
id->p_encoder->fmt_out.video.i_visible_height = p_sys->i_height & ~1;
id->p_encoder->fmt_out.video.i_sar_num = id->p_encoder->fmt_out.video.i_sar_den = 0;
transcode_video_filter_init( p_stream, id );
transcode_video_encoder_init( p_stream, id );
conversion_video_filter_append( id );
memcpy( &id->fmt_input_video, &id->p_decoder->fmt_out.video, sizeof(video_format_t));
}
if( unlikely( !id->p_encoder->p_module ) )
{
if( id->p_f_chain )
filter_chain_Delete( id->p_f_chain );
if( id->p_uf_chain )
filter_chain_Delete( id->p_uf_chain );
id->p_f_chain = id->p_uf_chain = NULL;
transcode_video_filter_init( p_stream, id );
transcode_video_encoder_init( p_stream, id );
conversion_video_filter_append( id );
memcpy( &id->fmt_input_video, &id->p_decoder->fmt_out.video, sizeof(video_format_t));
if( transcode_video_encoder_open( p_stream, id ) != VLC_SUCCESS )
{
picture_Release( p_pic );
transcode_video_close( p_stream, id );
id->b_transcode = false;
return VLC_EGENERIC;
}
date_Set( &id->next_output_pts, p_pic->date );
date_Set( &id->next_input_pts, p_pic->date );
}
/*Input lipsync and drop check */
if( p_sys->b_master_sync )
{
/* If input pts lower than next_output_pts - output_frame_interval
* Then the future input frame should fit better and we can drop this one
*
* We check this here as we don't need to run video filter at all for pictures
* we are going to drop anyway
*
* Duplication need is checked in OutputFrame */
if( ( p_pic->date ) <
( date_Get( &id->next_output_pts ) - (mtime_t)id->i_output_frame_interval ) )
{
#if 0
msg_Dbg( p_stream, "dropping frame (%"PRId64" + %"PRId64" vs %"PRId64")",
p_pic->date, id->i_input_frame_interval, date_Get(&id->next_output_pts) );
#endif
picture_Release( p_pic );
continue;
}
#if 0
msg_Dbg( p_stream, "not dropping frame");
#endif
}
/* Check input drift regardless, if it's more than 100ms from our approximation, we most likely have lost pictures
* and are in danger to become out of sync, so better reset timestamps then */
if( likely( p_pic->date != VLC_TS_INVALID ) )
{
mtime_t input_drift = p_pic->date - date_Get( &id->next_input_pts );
if( unlikely( (input_drift > (CLOCK_FREQ/10)) ||
(input_drift < -(CLOCK_FREQ/10))
) )
{
msg_Warn( p_stream, "Reseting video sync" );
date_Set( &id->next_output_pts, p_pic->date );
date_Set( &id->next_input_pts, p_pic->date );
}
}
date_Increment( &id->next_input_pts, id->p_decoder->fmt_out.video.i_frame_rate_base );
/* Run the filter and output chains; first with the picture,
* and then with NULL as many times as we need until they
* stop outputting frames.
*/
for ( ;; ) {
picture_t *p_filtered_pic = p_pic;
/* Run filter chain */
if( id->p_f_chain )
p_filtered_pic = filter_chain_VideoFilter( id->p_f_chain, p_filtered_pic );
if( !p_filtered_pic )
break;
for ( ;; ) {
picture_t *p_user_filtered_pic = p_filtered_pic;
/* Run user specified filter chain */
if( id->p_uf_chain )
p_user_filtered_pic = filter_chain_VideoFilter( id->p_uf_chain, p_user_filtered_pic );
if( !p_user_filtered_pic )
break;
OutputFrame( p_stream, p_user_filtered_pic, id, out );
p_filtered_pic = NULL;
}
p_pic = NULL;
}
}
if( p_sys->i_threads >= 1 )
{
/* Pick up any return data the encoder thread wants to output. */
vlc_mutex_lock( &p_sys->lock_out );
*out = p_sys->p_buffers;
p_sys->p_buffers = NULL;
vlc_mutex_unlock( &p_sys->lock_out );
}
return VLC_SUCCESS;
}
bool transcode_video_add( sout_stream_t *p_stream, es_format_t *p_fmt,
sout_stream_id_sys_t *id )
{
sout_stream_sys_t *p_sys = p_stream->p_sys;
msg_Dbg( p_stream,
"creating video transcoding from fcc=`%4.4s' to fcc=`%4.4s'",
(char*)&p_fmt->i_codec, (char*)&p_sys->i_vcodec );
/* Complete destination format */
id->p_encoder->fmt_out.i_codec = p_sys->i_vcodec;
id->p_encoder->fmt_out.video.i_visible_width = p_sys->i_width & ~1;
id->p_encoder->fmt_out.video.i_visible_height = p_sys->i_height & ~1;
id->p_encoder->fmt_out.i_bitrate = p_sys->i_vbitrate;
/* Build decoder -> filter -> encoder chain */
if( transcode_video_new( p_stream, id ) )
{
msg_Err( p_stream, "cannot create video chain" );
return false;
}
/* Stream will be added later on because we don't know
* all the characteristics of the decoded stream yet */
id->b_transcode = true;
if( p_sys->fps_num )
{
id->p_encoder->fmt_out.video.i_frame_rate = (p_sys->fps_num );
id->p_encoder->fmt_out.video.i_frame_rate_base = (p_sys->fps_den ? p_sys->fps_den : 1);
}
return true;
}