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vlc/modules/stream_out/transcode.c

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/*****************************************************************************
* transcode.c
*****************************************************************************
* Copyright (C) 2001, 2002 VideoLAN
* $Id: transcode.c,v 1.35 2003/10/08 21:01:07 gbazin Exp $
*
* Authors: Laurent Aimar <fenrir@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 <stdlib.h>
#include <string.h>
#include <vlc/vlc.h>
#include <vlc/input.h>
#include <vlc/sout.h>
#include <vlc/vout.h>
#include <vlc/decoder.h>
/* ffmpeg header */
#ifdef HAVE_FFMPEG_AVCODEC_H
# include <ffmpeg/avcodec.h>
#else
# include <avcodec.h>
#endif
/* vorbis header */
#ifdef HAVE_VORBIS_VORBISENC_H
# include <vorbis/vorbisenc.h>
# ifndef OV_ECTL_RATEMANAGE_AVG
# define OV_ECTL_RATEMANAGE_AVG 0x0
# endif
#endif
/*****************************************************************************
* Exported prototypes
*****************************************************************************/
static int Open ( vlc_object_t * );
static void Close ( vlc_object_t * );
static sout_stream_id_t *Add ( sout_stream_t *, sout_format_t * );
static int Del ( sout_stream_t *, sout_stream_id_t * );
static int Send( sout_stream_t *, sout_stream_id_t *, sout_buffer_t* );
static int transcode_audio_ffmpeg_new ( sout_stream_t *, sout_stream_id_t * );
static void transcode_audio_ffmpeg_close ( sout_stream_t *, sout_stream_id_t * );
static int transcode_audio_ffmpeg_process( sout_stream_t *, sout_stream_id_t *, sout_buffer_t *, sout_buffer_t ** );
static int transcode_video_ffmpeg_new ( sout_stream_t *, sout_stream_id_t * );
static void transcode_video_ffmpeg_close ( sout_stream_t *, sout_stream_id_t * );
static int transcode_video_ffmpeg_process( sout_stream_t *, sout_stream_id_t *, sout_buffer_t *, sout_buffer_t ** );
static int transcode_video_ffmpeg_getframebuf( struct AVCodecContext *, AVFrame *);
/*****************************************************************************
* Module descriptor
*****************************************************************************/
vlc_module_begin();
set_description( _("Transcode stream") );
set_capability( "sout stream", 50 );
add_shortcut( "transcode" );
set_callbacks( Open, Close );
vlc_module_end();
struct sout_stream_sys_t
{
sout_stream_t *p_out;
vlc_fourcc_t i_acodec; /* codec audio (0 if not transcode) */
int i_sample_rate;
int i_channels;
int i_abitrate;
vlc_fourcc_t i_vcodec; /* " video " " " " */
int i_vbitrate;
int i_vtolerance;
int i_width;
int i_height;
int i_b_frames;
int i_key_int;
int i_qmin;
int i_qmax;
vlc_bool_t i_hq;
vlc_bool_t b_deinterlace;
int i_crop_top;
int i_crop_bottom;
int i_crop_right;
int i_crop_left;
mtime_t i_input_pts;
mtime_t i_output_pts;
mtime_t i_last_ref_pts;
mtime_t i_buggy_pts_detect;
};
/*****************************************************************************
* Open:
*****************************************************************************/
static int Open( vlc_object_t *p_this )
{
sout_stream_t *p_stream = (sout_stream_t*)p_this;
sout_stream_sys_t *p_sys;
char *codec;
p_sys = malloc( sizeof( sout_stream_sys_t ) );
p_sys->p_out = sout_stream_new( p_stream->p_sout, p_stream->psz_next );
p_sys->i_acodec = 0;
p_sys->i_sample_rate = 0;
p_sys->i_channels = 0;
p_sys->i_abitrate = 0;
p_sys->i_vcodec = 0;
p_sys->i_vbitrate = 0;
p_sys->i_vtolerance = -1;
p_sys->i_width = 0;
p_sys->i_height = 0;
p_sys->i_key_int = -1;
p_sys->i_b_frames = 0;
p_sys->i_qmin = 2;
p_sys->i_qmax = 31;
#if LIBAVCODEC_BUILD >= 4673
p_sys->i_hq = FF_MB_DECISION_SIMPLE;
#else
p_sys->i_hq = VLC_FALSE;
#endif
p_sys->b_deinterlace= VLC_FALSE;
p_sys->i_crop_top = 0;
p_sys->i_crop_bottom= 0;
p_sys->i_crop_right = 0;
p_sys->i_crop_left = 0;
if( ( codec = sout_cfg_find_value( p_stream->p_cfg, "acodec" ) ) )
{
char fcc[4] = " ";
char *val;
memcpy( fcc, codec, strlen( codec ) );
p_sys->i_acodec = VLC_FOURCC( fcc[0], fcc[1], fcc[2], fcc[3] );
if( ( val = sout_cfg_find_value( p_stream->p_cfg, "samplerate" ) ) )
{
p_sys->i_sample_rate = atoi( val );
}
if( ( val = sout_cfg_find_value( p_stream->p_cfg, "channels" ) ) )
{
p_sys->i_channels = atoi( val );
}
if( ( val = sout_cfg_find_value( p_stream->p_cfg, "ab" ) ) )
{
p_sys->i_abitrate = atoi( val );
if( p_sys->i_abitrate < 4000 )
{
p_sys->i_abitrate *= 1000;
}
}
msg_Dbg( p_stream, "codec audio=%4.4s %dHz %d channels %dKb/s", fcc,
p_sys->i_sample_rate, p_sys->i_channels,
p_sys->i_abitrate / 1024 );
}
if( ( codec = sout_cfg_find_value( p_stream->p_cfg, "vcodec" ) ) )
{
char fcc[4] = " ";
char *val;
memcpy( fcc, codec, strlen( codec ) );
p_sys->i_vcodec = VLC_FOURCC( fcc[0], fcc[1], fcc[2], fcc[3] );
if( ( val = sout_cfg_find_value( p_stream->p_cfg, "width" ) ) )
{
p_sys->i_width = atoi( val );
}
if( ( val = sout_cfg_find_value( p_stream->p_cfg, "height" ) ) )
{
p_sys->i_height = atoi( val );
}
if( ( val = sout_cfg_find_value( p_stream->p_cfg, "vb" ) ) )
{
p_sys->i_vbitrate = atoi( val );
if( p_sys->i_vbitrate < 16000 )
{
p_sys->i_vbitrate *= 1000;
}
}
if( ( val = sout_cfg_find_value( p_stream->p_cfg, "vt" ) ) )
{
p_sys->i_vtolerance = atoi( val );
}
if( sout_cfg_find( p_stream->p_cfg, "deinterlace" ) )
{
p_sys->b_deinterlace = VLC_TRUE;
}
/* crop */
if( ( val = sout_cfg_find_value( p_stream->p_cfg, "croptop" ) ) )
{
p_sys->i_crop_top = atoi( val );
}
if( ( val = sout_cfg_find_value( p_stream->p_cfg, "cropbottom" ) ) )
{
p_sys->i_crop_bottom = atoi( val );
}
if( ( val = sout_cfg_find_value( p_stream->p_cfg, "cropleft" ) ) )
{
p_sys->i_crop_left = atoi( val );
}
if( ( val = sout_cfg_find_value( p_stream->p_cfg, "cropright" ) ) )
{
p_sys->i_crop_right = atoi( val );
}
if( ( val = sout_cfg_find_value( p_stream->p_cfg, "keyint" ) ) )
{
p_sys->i_key_int = atoi( val );
}
if( ( val = sout_cfg_find_value( p_stream->p_cfg, "bframes" ) ) )
{
p_sys->i_b_frames = atoi( val );
}
#if LIBAVCODEC_BUILD >= 4673
if( ( val = sout_cfg_find_value( p_stream->p_cfg, "hq" ) ) )
{
if( !strcmp( val, "rd" ) )
{
p_sys->i_hq = FF_MB_DECISION_RD;
}
else if( !strcmp( val, "bits" ) )
{
p_sys->i_hq = FF_MB_DECISION_BITS;
}
else if( !strcmp( val, "simple" ) )
{
p_sys->i_hq = FF_MB_DECISION_SIMPLE;
}
else
{
p_sys->i_hq = FF_MB_DECISION_RD;
}
}
#else
if( sout_cfg_find( p_stream->p_cfg, "hq" ) )
{
p_sys->i_hq = VLC_TRUE;
}
#endif
if( ( val = sout_cfg_find_value( p_stream->p_cfg, "qmin" ) ) )
{
p_sys->i_qmin = atoi( val );
}
if( ( val = sout_cfg_find_value( p_stream->p_cfg, "qmax" ) ) )
{
p_sys->i_qmax = atoi( val );
}
msg_Dbg( p_stream, "codec video=%4.4s %dx%d %dkb/s",
fcc,
p_sys->i_width, p_sys->i_height,
p_sys->i_vbitrate / 1024 );
}
if( !p_sys->p_out )
{
msg_Err( p_stream, "cannot create chain" );
free( p_sys );
return VLC_EGENERIC;
}
p_stream->pf_add = Add;
p_stream->pf_del = Del;
p_stream->pf_send = Send;
p_stream->p_sys = p_sys;
avcodec_init();
avcodec_register_all();
/* ffmpeg needs some padding at the end of each buffer */
p_stream->p_sout->i_padding += FF_INPUT_BUFFER_PADDING_SIZE;
return VLC_SUCCESS;
}
/*****************************************************************************
* Close:
*****************************************************************************/
static void Close( vlc_object_t * p_this )
{
sout_stream_t *p_stream = (sout_stream_t*)p_this;
sout_stream_sys_t *p_sys = p_stream->p_sys;
sout_stream_delete( p_sys->p_out );
free( p_sys );
}
struct sout_stream_id_t
{
vlc_fourcc_t b_transcode;
sout_format_t f_src; /* only if transcoding */
sout_format_t f_dst; /* " " " */
/* id of the out stream */
void *id;
/* Encoder */
encoder_t *p_encoder;
/* ffmpeg part */
AVCodec *ff_dec;
AVCodecContext *ff_dec_c;
vlc_fourcc_t b_enc_inited;
AVCodec *ff_enc;
AVCodecContext *ff_enc_c;
mtime_t i_dts;
mtime_t i_length;
int i_buffer_in;
int i_buffer_in_pos;
uint8_t *p_buffer_in;
int i_buffer;
int i_buffer_pos;
uint8_t *p_buffer;
int i_buffer_out;
int i_buffer_out_pos;
uint8_t *p_buffer_out;
AVFrame *p_ff_pic;
AVFrame *p_ff_pic_tmp0; /* to do deinterlace */
AVFrame *p_ff_pic_tmp1; /* to do pix conversion */
AVFrame *p_ff_pic_tmp2; /* to do resample */
ImgReSampleContext *p_vresample;
#ifdef HAVE_VORBIS_VORBISENC_H
/* Vorbis part */
vorbis_info *p_vi;
vorbis_dsp_state *p_vd;
vorbis_block *p_vb;
vorbis_comment *p_vc;
int i_last_block_size;
int i_samples_delay;
vlc_bool_t b_headers_sent;
#endif
};
static sout_stream_id_t * Add( sout_stream_t *p_stream, sout_format_t *p_fmt )
{
sout_stream_sys_t *p_sys = p_stream->p_sys;
sout_stream_id_t *id;
id = malloc( sizeof( sout_stream_id_t ) );
id->i_dts = 0;
id->id = NULL;
id->p_encoder = NULL;
if( p_fmt->i_cat == AUDIO_ES && p_sys->i_acodec != 0 )
{
msg_Dbg( p_stream,
"creating audio transcoding from fcc=`%4.4s' to fcc=`%4.4s'",
(char*)&p_fmt->i_fourcc,
(char*)&p_sys->i_acodec );
/* src format */
memcpy( &id->f_src, p_fmt, sizeof( sout_format_t ) );
/* create dst format */
id->f_dst.i_cat = AUDIO_ES;
id->f_dst.i_fourcc = p_sys->i_acodec;
id->f_dst.i_sample_rate = p_sys->i_sample_rate > 0 ? p_sys->i_sample_rate : id->f_src.i_sample_rate;
id->f_dst.i_channels = p_sys->i_channels > 0 ? p_sys->i_channels : id->f_src.i_channels;
id->f_dst.i_bitrate = p_sys->i_abitrate > 0 ? p_sys->i_abitrate : 64000;
id->f_dst.i_block_align = 0;
id->f_dst.i_extra_data = 0;
id->f_dst.p_extra_data = NULL;
/* build decoder -> filter -> encoder */
if( transcode_audio_ffmpeg_new( p_stream, id ) )
{
msg_Err( p_stream, "cannot create audio chain" );
free( id );
return NULL;
}
/* open output stream */
id->id = p_sys->p_out->pf_add( p_sys->p_out, &id->f_dst );
id->b_transcode = VLC_TRUE;
if( id->id == NULL )
{
free( id );
return NULL;
}
}
else if( p_fmt->i_cat == VIDEO_ES && p_sys->i_vcodec != 0 )
{
msg_Dbg( p_stream,
"creating video transcoding from fcc=`%4.4s' to fcc=`%4.4s'",
(char*)&p_fmt->i_fourcc,
(char*)&p_sys->i_vcodec );
memcpy( &id->f_src, p_fmt, sizeof( sout_format_t ) );
/* create dst format */
id->f_dst.i_cat = VIDEO_ES;
id->f_dst.i_fourcc = p_sys->i_vcodec;
id->f_dst.i_width = p_sys->i_width ; /* > 0 ? p_sys->i_width : id->f_src.i_width; */
id->f_dst.i_height = p_sys->i_height; /* > 0 ? p_sys->i_height: id->f_src.i_height; */
id->f_dst.i_bitrate = p_sys->i_vbitrate > 0 ? p_sys->i_vbitrate : 800*1000;
id->f_dst.i_extra_data = 0;
id->f_dst.p_extra_data = NULL;
/* build decoder -> filter -> encoder */
if( transcode_video_ffmpeg_new( p_stream, id ) )
{
msg_Err( p_stream, "cannot create video chain" );
free( id );
return NULL;
}
#if 0
/* open output stream */
id->id = p_sys->p_out->pf_add( p_sys->p_out, &id->f_dst );
#endif
id->b_transcode = VLC_TRUE;
}
else
{
msg_Dbg( p_stream, "not transcoding a stream (fcc=`%4.4s')", (char*)&p_fmt->i_fourcc );
id->id = p_sys->p_out->pf_add( p_sys->p_out, p_fmt );
id->b_transcode = VLC_FALSE;
if( id->id == NULL )
{
free( id );
return NULL;
}
}
return id;
}
static int Del ( sout_stream_t *p_stream, sout_stream_id_t *id )
{
sout_stream_sys_t *p_sys = p_stream->p_sys;
if( id->b_transcode )
{
if( id->f_src.i_cat == AUDIO_ES )
{
transcode_audio_ffmpeg_close( p_stream, id );
}
else if( id->f_src.i_cat == VIDEO_ES )
{
transcode_video_ffmpeg_close( p_stream, id );
}
}
if( id->id ) p_sys->p_out->pf_del( p_sys->p_out, id->id );
free( id );
return VLC_SUCCESS;
}
static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
sout_buffer_t *p_buffer )
{
sout_stream_sys_t *p_sys = p_stream->p_sys;
if( id->b_transcode )
{
sout_buffer_t *p_buffer_out;
if( id->f_src.i_cat == AUDIO_ES )
{
transcode_audio_ffmpeg_process( p_stream, id, p_buffer, &p_buffer_out );
}
else if( id->f_src.i_cat == VIDEO_ES )
{
transcode_video_ffmpeg_process( p_stream, id, p_buffer, &p_buffer_out );
}
sout_BufferDelete( p_stream->p_sout, p_buffer );
if( p_buffer_out )
{
return p_sys->p_out->pf_send( p_sys->p_out, id->id, p_buffer_out );
}
return VLC_SUCCESS;
}
else if( id->id != NULL )
{
return p_sys->p_out->pf_send( p_sys->p_out, id->id, p_buffer );
}
else
{
sout_BufferDelete( p_stream->p_sout, p_buffer );
return VLC_EGENERIC;
}
}
/****************************************************************************
* ffmpeg decoder reencocdr part
****************************************************************************/
static struct
{
vlc_fourcc_t i_fcc;
int i_ff_codec;
} fourcc_to_ff_code[] =
{
/* audio */
{ VLC_FOURCC( 'm', 'p', 'g', 'a' ), CODEC_ID_MP2 },
{ VLC_FOURCC( 'm', 'p', '3', ' ' ), CODEC_ID_MP3LAME },
{ VLC_FOURCC( 'm', 'p', '4', 'a' ), CODEC_ID_AAC },
{ VLC_FOURCC( 'a', '5', '2', ' ' ), CODEC_ID_AC3 },
{ VLC_FOURCC( 'a', 'c', '3', ' ' ), CODEC_ID_AC3 },
{ VLC_FOURCC( 'w', 'm', 'a', '1' ), CODEC_ID_WMAV1 },
{ VLC_FOURCC( 'w', 'm', 'a', '2' ), CODEC_ID_WMAV2 },
{ VLC_FOURCC( 'v', 'o', 'r', 'b' ), CODEC_ID_VORBIS },
{ VLC_FOURCC( 'a', 'l', 'a', 'w' ), CODEC_ID_PCM_ALAW },
/* video */
{ VLC_FOURCC( 'm', 'p', 'g', 'v' ), CODEC_ID_MPEG1VIDEO },
{ VLC_FOURCC( 'm', 'p', '1', 'v' ), CODEC_ID_MPEG1VIDEO },
#if LIBAVCODEC_BUILD >= 4676
{ VLC_FOURCC( 'm', 'p', '2', 'v' ), CODEC_ID_MPEG2VIDEO },
#endif
{ VLC_FOURCC( 'm', 'p', '4', 'v'), CODEC_ID_MPEG4 },
{ VLC_FOURCC( 'D', 'I', 'V', '1' ), CODEC_ID_MSMPEG4V1 },
{ VLC_FOURCC( 'D', 'I', 'V', '2' ), CODEC_ID_MSMPEG4V2 },
{ VLC_FOURCC( 'D', 'I', 'V', '3' ), CODEC_ID_MSMPEG4V3 },
{ VLC_FOURCC( 'H', '2', '6', '3' ), CODEC_ID_H263 },
{ VLC_FOURCC( 'I', '2', '6', '3' ), CODEC_ID_H263I },
{ VLC_FOURCC( 'h', 'u', 'f', 'f' ), CODEC_ID_HUFFYUV },
{ VLC_FOURCC( 'W', 'M', 'V', '1' ), CODEC_ID_WMV1 },
{ VLC_FOURCC( 'W', 'M', 'V', '2' ), CODEC_ID_WMV2 },
{ VLC_FOURCC( 'M', 'J', 'P', 'G' ), CODEC_ID_MJPEG },
{ VLC_FOURCC( 'm', 'j', 'p', 'b' ), CODEC_ID_MJPEGB },
{ VLC_FOURCC( 'd', 'v', 's', 'l' ), CODEC_ID_DVVIDEO },
{ VLC_FOURCC( 'S', 'V', 'Q', '1' ), CODEC_ID_SVQ1 },
#if LIBAVCODEC_BUILD >= 4666
{ VLC_FOURCC( 'S', 'V', 'Q', '3' ), CODEC_ID_SVQ3 },
#endif
/* raw video code, only used for 'encoding' */
{ VLC_FOURCC( 'I', '4', '2', '0' ), CODEC_ID_RAWVIDEO },
{ VLC_FOURCC( 'I', '4', '2', '2' ), CODEC_ID_RAWVIDEO },
{ VLC_FOURCC( 'I', '4', '4', '4' ), CODEC_ID_RAWVIDEO },
{ VLC_FOURCC( 'R', 'V', '1', '5' ), CODEC_ID_RAWVIDEO },
{ VLC_FOURCC( 'R', 'V', '1', '6' ), CODEC_ID_RAWVIDEO },
{ VLC_FOURCC( 'R', 'V', '2', '4' ), CODEC_ID_RAWVIDEO },
{ VLC_FOURCC( 'R', 'V', '3', '2' ), CODEC_ID_RAWVIDEO },
{ VLC_FOURCC( 'Y', 'U', 'Y', '2' ), CODEC_ID_RAWVIDEO },
{ VLC_FOURCC( 0, 0, 0, 0 ), 0 }
};
static inline int get_ff_codec( vlc_fourcc_t i_fcc )
{
int i;
for( i = 0; fourcc_to_ff_code[i].i_fcc != 0; i++ )
{
if( fourcc_to_ff_code[i].i_fcc == i_fcc )
{
return fourcc_to_ff_code[i].i_ff_codec;
}
}
return 0;
}
static inline int get_ff_chroma( vlc_fourcc_t i_chroma )
{
switch( i_chroma )
{
case VLC_FOURCC( 'I', '4', '2', '0' ):
return PIX_FMT_YUV420P;
case VLC_FOURCC( 'I', '4', '2', '2' ):
return PIX_FMT_YUV422P;
case VLC_FOURCC( 'I', '4', '4', '4' ):
return PIX_FMT_YUV444P;
case VLC_FOURCC( 'R', 'V', '1', '5' ):
return PIX_FMT_RGB555;
case VLC_FOURCC( 'R', 'V', '1', '6' ):
return PIX_FMT_RGB565;
case VLC_FOURCC( 'R', 'V', '2', '4' ):
return PIX_FMT_RGB24;
case VLC_FOURCC( 'R', 'V', '3', '2' ):
return PIX_FMT_RGBA32;
case VLC_FOURCC( 'G', 'R', 'E', 'Y' ):
return PIX_FMT_GRAY8;
case VLC_FOURCC( 'Y', 'U', 'Y', '2' ):
return PIX_FMT_YUV422;
default:
return 0;
}
}
static int transcode_audio_ffmpeg_new( sout_stream_t *p_stream,
sout_stream_id_t *id )
{
int i_ff_codec;
if( id->f_src.i_fourcc == VLC_FOURCC('s','1','6','l') ||
id->f_src.i_fourcc == VLC_FOURCC('s','1','6','b') ||
id->f_src.i_fourcc == VLC_FOURCC('s','8',' ',' ') ||
id->f_src.i_fourcc == VLC_FOURCC('u','8',' ',' ') )
{
id->ff_dec = NULL;
id->ff_dec_c = avcodec_alloc_context();
id->ff_dec_c->sample_rate = id->f_src.i_sample_rate;
id->ff_dec_c->channels = id->f_src.i_channels;
id->ff_dec_c->block_align = id->f_src.i_block_align;
id->ff_dec_c->bit_rate = id->f_src.i_bitrate;
}
else
{
/* find decoder */
i_ff_codec = get_ff_codec( id->f_src.i_fourcc );
if( i_ff_codec == 0 )
{
msg_Err( p_stream, "cannot find decoder id" );
return VLC_EGENERIC;
}
id->ff_dec = avcodec_find_decoder( i_ff_codec );
if( !id->ff_dec )
{
msg_Err( p_stream, "cannot find decoder (avcodec)" );
return VLC_EGENERIC;
}
id->ff_dec_c = avcodec_alloc_context();
id->ff_dec_c->sample_rate = id->f_src.i_sample_rate;
id->ff_dec_c->channels = id->f_src.i_channels;
id->ff_dec_c->block_align = id->f_src.i_block_align;
id->ff_dec_c->bit_rate = id->f_src.i_bitrate;
id->ff_dec_c->extradata_size = id->f_src.i_extra_data;
id->ff_dec_c->extradata = id->f_src.p_extra_data;
if( avcodec_open( id->ff_dec_c, id->ff_dec ) )
{
msg_Err( p_stream, "cannot open decoder" );
return VLC_EGENERIC;
}
}
/* find encoder */
id->i_buffer_in = 2 * AVCODEC_MAX_AUDIO_FRAME_SIZE;
id->i_buffer_in_pos = 0;
id->p_buffer_in = malloc( id->i_buffer_in );
id->i_buffer = 2 * AVCODEC_MAX_AUDIO_FRAME_SIZE;
id->i_buffer_pos = 0;
id->p_buffer = malloc( id->i_buffer );
id->i_buffer_out = 2 * AVCODEC_MAX_AUDIO_FRAME_SIZE;
id->i_buffer_out_pos = 0;
id->p_buffer_out = malloc( id->i_buffer_out );
/* Sanity check for audio channels */
id->f_dst.i_channels = __MIN( id->f_dst.i_channels, id->f_src.i_channels );
#ifdef HAVE_VORBIS_VORBISENC_H
if( id->f_dst.i_fourcc == VLC_FOURCC('v','o','r','b') )
{
id->p_vi = (vorbis_info *)malloc( sizeof(vorbis_info) );
id->p_vd = (vorbis_dsp_state *)malloc( sizeof(vorbis_dsp_state) );
id->p_vb = (vorbis_block *)malloc( sizeof(vorbis_block) );
id->p_vc = (vorbis_comment *)malloc( sizeof(vorbis_comment) );
vorbis_info_init( id->p_vi );
if( vorbis_encode_setup_managed( id->p_vi, id->f_dst.i_channels,
id->f_dst.i_sample_rate, -1, id->f_dst.i_bitrate, -1 ) ||
vorbis_encode_ctl( id->p_vi, OV_ECTL_RATEMANAGE_AVG, NULL ) ||
vorbis_encode_setup_init( id->p_vi ) ){}
/* add a comment */
vorbis_comment_init( id->p_vc);
vorbis_comment_add_tag( id->p_vc, "ENCODER", "VLC media player");
/* set up the analysis state and auxiliary encoding storage */
vorbis_analysis_init( id->p_vd, id->p_vi );
vorbis_block_init( id->p_vd, id->p_vb );
id->b_headers_sent = VLC_FALSE;
id->i_last_block_size = 0;
id->i_samples_delay = 0;
return VLC_SUCCESS;
}
#endif
i_ff_codec = get_ff_codec( id->f_dst.i_fourcc );
if( i_ff_codec == 0 )
{
msg_Err( p_stream, "cannot find encoder id" );
return VLC_EGENERIC;
}
id->ff_enc = avcodec_find_encoder( i_ff_codec );
if( !id->ff_enc )
{
msg_Err( p_stream, "cannot find encoder (avcodec)" );
return VLC_EGENERIC;
}
/* Hack for mp3 transcoding support */
if( id->f_dst.i_fourcc == VLC_FOURCC( 'm','p','3',' ' ) )
{
id->f_dst.i_fourcc = VLC_FOURCC( 'm','p','g','a' );
}
id->ff_enc_c = avcodec_alloc_context();
id->ff_enc_c->bit_rate = id->f_dst.i_bitrate;
id->ff_enc_c->sample_rate = id->f_dst.i_sample_rate;
id->ff_enc_c->channels = id->f_dst.i_channels;
/* Make sure we get extradata filled by the encoder */
id->ff_enc_c->extradata_size = 0;
id->ff_enc_c->extradata = NULL;
id->ff_enc_c->flags |= CODEC_FLAG_GLOBAL_HEADER;
if( avcodec_open( id->ff_enc_c, id->ff_enc ) )
{
if( id->ff_enc_c->channels > 2 )
{
id->ff_enc_c->channels = 2;
id->f_dst.i_channels = 2;
if( avcodec_open( id->ff_enc_c, id->ff_enc ) )
{
msg_Err( p_stream, "cannot open encoder" );
return VLC_EGENERIC;
}
msg_Warn( p_stream, "stereo mode selected (codec limitation)" );
}
else
{
msg_Err( p_stream, "cannot open encoder" );
return VLC_EGENERIC;
}
}
id->f_dst.i_extra_data = id->ff_enc_c->extradata_size;
id->f_dst.p_extra_data = id->ff_enc_c->extradata;
id->ff_enc_c->flags &= ~CODEC_FLAG_GLOBAL_HEADER;
return VLC_SUCCESS;
}
static void transcode_audio_ffmpeg_close( sout_stream_t *p_stream,
sout_stream_id_t *id )
{
if( id->ff_dec )
{
avcodec_close( id->ff_dec_c );
}
#ifdef HAVE_VORBIS_VORBISENC_H
if( id->f_dst.i_fourcc == VLC_FOURCC('v','o','r','b') )
{
vorbis_block_clear( id->p_vb );
vorbis_dsp_clear( id->p_vd );
vorbis_comment_clear( id->p_vc );
vorbis_info_clear( id->p_vi ); /* must be called last */
free( id->p_vi );
free( id->p_vd );
free( id->p_vb );
free( id->p_vc );
}
else
#endif
avcodec_close( id->ff_enc_c );
free( id->ff_dec_c );
if( id->f_dst.i_fourcc != VLC_FOURCC('v','o','r','b') )
free( id->ff_enc_c );
free( id->p_buffer_in );
free( id->p_buffer );
free( id->p_buffer_out );
}
static int transcode_audio_ffmpeg_process( sout_stream_t *p_stream,
sout_stream_id_t *id,
sout_buffer_t *in,
sout_buffer_t **out )
{
vlc_bool_t b_again = VLC_FALSE;
*out = NULL;
/* gather data into p_buffer_in */
#ifdef HAVE_VORBIS_VORBISENC_H
if( id->f_dst.i_fourcc == VLC_FOURCC( 'v', 'o', 'r', 'b' ) )
id->i_dts = in->i_dts -
(mtime_t)1000000 * (mtime_t)id->i_samples_delay /
(mtime_t)id->f_dst.i_sample_rate;
else
#endif
id->i_dts = in->i_dts -
(mtime_t)1000000 *
(mtime_t)(id->i_buffer_pos / 2 / id->ff_dec_c->channels )/
(mtime_t)id->ff_dec_c->sample_rate;
if( id->i_buffer_in_pos + (int)in->i_size > id->i_buffer_in )
{
/* extend buffer_in */
id->i_buffer_in = id->i_buffer_in_pos + in->i_size + 1024;
id->p_buffer_in = realloc( id->p_buffer_in, id->i_buffer_in );
}
memcpy( &id->p_buffer_in[id->i_buffer_in_pos],
in->p_buffer, in->i_size );
id->i_buffer_in_pos += in->i_size;
do
{
int i_buffer_pos;
/* decode as much data as possible */
if( id->ff_dec )
{
for( ;; )
{
int i_buffer_size;
int i_used;
i_buffer_size = id->i_buffer - id->i_buffer_pos;
i_used = avcodec_decode_audio( id->ff_dec_c,
(int16_t*)&id->p_buffer[id->i_buffer_pos],
&i_buffer_size, id->p_buffer_in,
id->i_buffer_in_pos );
/* msg_Warn( p_stream, "avcodec_decode_audio: %d used",
i_used ); */
id->i_buffer_pos += i_buffer_size;
if( i_used < 0 )
{
msg_Warn( p_stream, "error");
id->i_buffer_in_pos = 0;
break;
}
else if( i_used < id->i_buffer_in_pos )
{
memmove( id->p_buffer_in,
&id->p_buffer_in[i_used],
id->i_buffer_in - i_used );
id->i_buffer_in_pos -= i_used;
}
else
{
id->i_buffer_in_pos = 0;
break;
}
if( id->i_buffer_pos >= AVCODEC_MAX_AUDIO_FRAME_SIZE )
{
/* buffer full */
b_again = VLC_TRUE;
break;
}
}
}
else
{
int16_t *sout = (int16_t*)&id->p_buffer[id->i_buffer_pos];
int i_used = 0;
if( id->f_src.i_fourcc == VLC_FOURCC( 's', '8', ' ', ' ' ) )
{
int8_t *sin = (int8_t*)id->p_buffer_in;
int i_samples = __MIN( ( id->i_buffer - id->i_buffer_pos )
/ 2, id->i_buffer_in_pos );
i_used = i_samples;
while( i_samples > 0 )
{
*sout++ = ( *sin++ ) << 8;
i_samples--;
}
}
else if( id->f_src.i_fourcc == VLC_FOURCC( 'u', '8', ' ', ' ' ) )
{
int8_t *sin = (int8_t*)id->p_buffer_in;
int i_samples = __MIN( ( id->i_buffer - id->i_buffer_pos )
/ 2, id->i_buffer_in_pos );
i_used = i_samples;
while( i_samples > 0 )
{
*sout++ = ( *sin++ - 128 ) << 8;
i_samples--;
}
}
else if( id->f_src.i_fourcc == VLC_FOURCC( 's', '1', '6', 'l' ) )
{
int i_samples = __MIN( ( id->i_buffer - id->i_buffer_pos )
/ 2, id->i_buffer_in_pos / 2);
#ifdef WORDS_BIGENDIAN
uint8_t *sin = (uint8_t*)id->p_buffer_in;
i_used = i_samples * 2;
while( i_samples > 0 )
{
uint8_t tmp[2];
tmp[1] = *sin++;
tmp[0] = *sin++;
*sout++ = *(int16_t*)tmp;
i_samples--;
}
#else
memcpy( sout, id->p_buffer_in, i_samples * 2 );
sout += i_samples;
i_used = i_samples * 2;
#endif
}
else if( id->f_src.i_fourcc == VLC_FOURCC( 's', '1', '6', 'b' ) )
{
int i_samples = __MIN( ( id->i_buffer - id->i_buffer_pos )
/ 2, id->i_buffer_in_pos / 2);
#ifdef WORDS_BIGENDIAN
memcpy( sout, id->p_buffer_in, i_samples * 2 );
sout += i_samples;
i_used = i_samples * 2;
#else
uint8_t *sin = (uint8_t*)id->p_buffer_in;
i_used = i_samples * 2;
while( i_samples > 0 )
{
uint8_t tmp[2];
tmp[1] = *sin++;
tmp[0] = *sin++;
*sout++ = *(int16_t*)tmp;
i_samples--;
}
#endif
}
id->i_buffer_pos = (uint8_t*)sout - id->p_buffer;
if( i_used < id->i_buffer_in_pos )
{
memmove( id->p_buffer_in,
&id->p_buffer_in[i_used],
id->i_buffer_in - i_used );
}
id->i_buffer_in_pos -= i_used;
}
i_buffer_pos = id->i_buffer_pos;
/* encode as much data as possible */
#ifdef HAVE_VORBIS_VORBISENC_H
if( id->i_buffer_pos == 0 );
else if( id->f_dst.i_fourcc == VLC_FOURCC( 'v', 'o', 'r', 'b' ) )
{
float **buffer;
int i, j, i_samples;
sout_buffer_t *p_out;
ogg_packet op;
if( !id->b_headers_sent )
{
ogg_packet header[3];
vorbis_analysis_headerout( id->p_vd, id->p_vc,
&header[0], &header[1], &header[2]);
for( i = 0; i < 3; i++ )
{
p_out = sout_BufferNew( p_stream->p_sout, header[i].bytes);
memcpy( p_out->p_buffer, header[i].packet,
header[i].bytes );
p_out->i_size = header[i].bytes;
p_out->i_length = 0;
p_out->i_dts = p_out->i_pts = 0;
sout_BufferChain( out, p_out );
}
id->b_headers_sent = VLC_TRUE;
}
i_samples = id->i_buffer_pos / id->f_src.i_channels / 2;
id->i_samples_delay += i_samples;
id->i_buffer_pos = 0;
buffer = vorbis_analysis_buffer( id->p_vd, i_samples );
/* convert samples to float and uninterleave */
for( i = 0; i < id->f_dst.i_channels; i++ )
{
for( j = 0 ; j < i_samples ; j++ )
{
buffer[i][j]= ((float)( ((int16_t *)id->p_buffer)
[j*id->f_src.i_channels + i ] ))/ 32768.f;
}
}
vorbis_analysis_wrote( id->p_vd, i_samples );
while( vorbis_analysis_blockout( id->p_vd, id->p_vb ) == 1 )
{
vorbis_analysis( id->p_vb, NULL );
vorbis_bitrate_addblock( id->p_vb );
while( vorbis_bitrate_flushpacket( id->p_vd, &op ) )
{
int i_block_size;
p_out = sout_BufferNew( p_stream->p_sout, op.bytes );
memcpy( p_out->p_buffer, op.packet, op.bytes );
i_block_size = vorbis_packet_blocksize( id->p_vi, &op );
if( i_block_size < 0 ) i_block_size = 0;
i_samples = ( id->i_last_block_size +
i_block_size ) >> 2;
id->i_last_block_size = i_block_size;
p_out->i_size = op.bytes;
p_out->i_length = (mtime_t)1000000 *
(mtime_t)i_samples /
(mtime_t)id->f_dst.i_sample_rate;
//msg_Err( p_stream, "i_dts: %lld", id->i_dts );
/* FIXME */
p_out->i_dts = id->i_dts;
p_out->i_pts = id->i_dts;
id->i_samples_delay -= i_samples;
/* update dts */
id->i_dts += p_out->i_length;
sout_BufferChain( out, p_out );
}
}
}
else
#endif
for( ;; )
{
int i_frame_size = id->ff_enc_c->frame_size * 2 *
id->ff_dec_c->channels;
int i_out_size, i, j;
sout_buffer_t *p_out;
int16_t *p_buffer = (int16_t *)(id->p_buffer + i_buffer_pos -
id->i_buffer_pos);
if( id->i_buffer_pos < i_frame_size )
{
break;
}
if( id->ff_dec_c->channels != id->ff_enc_c->channels )
{
/* dumb downmixing */
for( i = 0; i < id->ff_enc_c->frame_size; i++ )
{
for( j = 0 ; j < id->f_dst.i_channels; j++ )
{
p_buffer[i*id->f_dst.i_channels+j] = p_buffer[i*id->f_src.i_channels+j];
}
}
}
/* msg_Warn( p_stream, "avcodec_encode_audio: frame size%d",
i_frame_size); */
i_out_size = avcodec_encode_audio( id->ff_enc_c,
id->p_buffer_out, id->i_buffer_out, p_buffer );
if( i_out_size <= 0 )
{
break;
}
id->i_buffer_pos -= i_frame_size;
p_out = sout_BufferNew( p_stream->p_sout, i_out_size );
memcpy( p_out->p_buffer, id->p_buffer_out, i_out_size );
p_out->i_size = i_out_size;
p_out->i_length = (mtime_t)1000000 *
(mtime_t)id->ff_enc_c->frame_size /
(mtime_t)id->ff_enc_c->sample_rate;
/* FIXME */
p_out->i_dts = id->i_dts;
p_out->i_pts = id->i_dts;
/* update dts */
id->i_dts += p_out->i_length;
/* msg_Warn( p_stream, "frame dts=%lld len %lld out=%d",
p_out->i_dts, p_out->i_length, i_out_size ); */
sout_BufferChain( out, p_out );
}
/* Copy the remaining raw samples */
if( id->i_buffer_pos != 0 )
{
memmove( id->p_buffer,
&id->p_buffer[i_buffer_pos - id->i_buffer_pos],
id->i_buffer_pos );
}
} while( b_again );
return VLC_SUCCESS;
}
/*
* video
*/
static int transcode_video_ffmpeg_new( sout_stream_t *p_stream,
sout_stream_id_t *id )
{
sout_stream_sys_t *p_sys = p_stream->p_sys;
int i_ff_codec;
if( id->f_src.i_fourcc == VLC_FOURCC( 'I', '4', '2', '0' ) ||
id->f_src.i_fourcc == VLC_FOURCC( 'I', '4', '2', '2' ) ||
id->f_src.i_fourcc == VLC_FOURCC( 'I', '4', '4', '4' ) ||
id->f_src.i_fourcc == VLC_FOURCC( 'Y', 'U', 'Y', '2' ) ||
id->f_src.i_fourcc == VLC_FOURCC( 'R', 'V', '1', '5' ) ||
id->f_src.i_fourcc == VLC_FOURCC( 'R', 'V', '1', '6' ) ||
id->f_src.i_fourcc == VLC_FOURCC( 'R', 'V', '2', '4' ) ||
id->f_src.i_fourcc == VLC_FOURCC( 'R', 'V', '3', '2' ) ||
id->f_src.i_fourcc == VLC_FOURCC( 'G', 'R', 'E', 'Y' ) )
{
id->ff_dec = NULL;
id->ff_dec_c = avcodec_alloc_context();
id->ff_dec_c->width = id->f_src.i_width;
id->ff_dec_c->height = id->f_src.i_height;
id->ff_dec_c->pix_fmt = get_ff_chroma( id->f_src.i_fourcc );
}
else
{
/* find decoder */
i_ff_codec = get_ff_codec( id->f_src.i_fourcc );
if( i_ff_codec == 0 )
{
msg_Err( p_stream, "cannot find decoder" );
return VLC_EGENERIC;
}
id->ff_dec = avcodec_find_decoder( i_ff_codec );
if( !id->ff_dec )
{
msg_Err( p_stream, "cannot find decoder" );
return VLC_EGENERIC;
}
id->ff_dec_c = avcodec_alloc_context();
id->ff_dec_c->width = id->f_src.i_width;
id->ff_dec_c->height = id->f_src.i_height;
/* id->ff_dec_c->bit_rate = id->f_src.i_bitrate; */
id->ff_dec_c->extradata_size= id->f_src.i_extra_data;
id->ff_dec_c->extradata = id->f_src.p_extra_data;
id->ff_dec_c->workaround_bugs = FF_BUG_AUTODETECT;
id->ff_dec_c->error_resilience= -1;
id->ff_dec_c->get_buffer = transcode_video_ffmpeg_getframebuf;
id->ff_dec_c->opaque = p_sys;
if( avcodec_open( id->ff_dec_c, id->ff_dec ) < 0 )
{
msg_Err( p_stream, "cannot open decoder" );
return VLC_EGENERIC;
}
if( i_ff_codec == CODEC_ID_MPEG4 && id->ff_dec_c->extradata_size > 0 )
{
int b_gotpicture;
AVFrame frame;
uint8_t *p_vol = malloc( id->ff_dec_c->extradata_size +
FF_INPUT_BUFFER_PADDING_SIZE );
memcpy( p_vol, id->ff_dec_c->extradata,
id->ff_dec_c->extradata_size );
memset( p_vol + id->ff_dec_c->extradata_size, 0,
FF_INPUT_BUFFER_PADDING_SIZE );
avcodec_decode_video( id->ff_dec_c, &frame, &b_gotpicture,
id->ff_dec_c->extradata,
id->ff_dec_c->extradata_size );
free( p_vol );
}
}
/* find encoder */
id->ff_enc = NULL;
i_ff_codec = get_ff_codec( id->f_dst.i_fourcc );
if( i_ff_codec != 0 )
{
id->ff_enc = avcodec_find_encoder( i_ff_codec );
}
/* Hack for external encoders */
if( !id->ff_enc )
{
id->p_encoder = vlc_object_create( p_stream, VLC_OBJECT_ENCODER );
id->p_encoder->i_fourcc = id->f_dst.i_fourcc;
id->p_encoder->format.video.i_width = p_sys->i_width;
id->p_encoder->format.video.i_height = p_sys->i_height;
id->p_encoder->i_bitrate = p_sys->i_vbitrate;
if( id->p_encoder->format.video.i_width <= 0 )
{
id->p_encoder->format.video.i_width = id->f_dst.i_width =
id->ff_dec_c->width - p_sys->i_crop_left -
p_sys->i_crop_right;
}
if( id->p_encoder->format.video.i_height <= 0 )
{
id->p_encoder->format.video.i_height = id->f_dst.i_height =
id->ff_dec_c->height - p_sys->i_crop_top -
p_sys->i_crop_bottom;
}
id->p_encoder->p_module =
module_Need( id->p_encoder, "video encoder", NULL );
if( !id->p_encoder->p_module )
{
free( id->p_encoder );
id->p_encoder = NULL;
}
}
/* End hack for external encoders */
if( !id->ff_enc && !id->p_encoder )
{
msg_Err( p_stream, "cannot find encoder" );
return VLC_EGENERIC;
}
/* XXX open it only when we have the first frame */
id->b_enc_inited = VLC_FALSE;
id->i_buffer_in = 0;
id->i_buffer_in_pos = 0;
id->p_buffer_in = NULL;
id->i_buffer = 3*1024*1024;
id->i_buffer_pos = 0;
id->p_buffer = malloc( id->i_buffer );
id->i_buffer_out = 0;
id->i_buffer_out_pos = 0;
id->p_buffer_out = NULL;
id->p_ff_pic = avcodec_alloc_frame();
id->p_ff_pic_tmp0 = NULL;
id->p_ff_pic_tmp1 = NULL;
id->p_ff_pic_tmp2 = NULL;
id->p_vresample = NULL;
p_sys->i_last_ref_pts = 0;
p_sys->i_buggy_pts_detect = 0;
/* This is enough for external encoders */
if( id->p_encoder->p_module ) return VLC_SUCCESS;
if( id->f_dst.i_fourcc == VLC_FOURCC( 'm','p','1','v' )||
id->f_dst.i_fourcc == VLC_FOURCC( 'm','p','2','v' ) )
{
id->f_dst.i_fourcc = VLC_FOURCC( 'm','p','g','v' );
}
id->ff_enc_c = avcodec_alloc_context();
id->ff_enc_c->width = id->f_dst.i_width;
id->ff_enc_c->height = id->f_dst.i_height;
id->ff_enc_c->bit_rate = id->f_dst.i_bitrate;
if( id->ff_dec )
{
id->ff_enc_c->frame_rate = id->ff_dec_c->frame_rate;
#if LIBAVCODEC_BUILD >= 4662
id->ff_enc_c->frame_rate_base= id->ff_dec_c->frame_rate_base;
#endif
}
else
{
#if LIBAVCODEC_BUILD >= 4662
id->ff_enc_c->frame_rate = 25 ; /* FIXME as it break mpeg */
id->ff_enc_c->frame_rate_base= 1;
#else
id->ff_enc_c->frame_rate = 25 * FRAME_RATE_BASE;
#endif
}
id->ff_enc_c->gop_size = p_sys->i_key_int >= 0 ? p_sys->i_key_int : 50;
id->ff_enc_c->max_b_frames = __MIN( p_sys->i_b_frames, FF_MAX_B_FRAMES );
id->ff_enc_c->b_frame_strategy = 0;
id->ff_enc_c->b_quant_factor = 2.0;
if( p_sys->i_vtolerance >= 0 )
{
id->ff_enc_c->bit_rate_tolerance = p_sys->i_vtolerance;
}
id->ff_enc_c->qmin = p_sys->i_qmin;
id->ff_enc_c->qmax = p_sys->i_qmax;
#if LIBAVCODEC_BUILD >= 4673
id->ff_enc_c->mb_decision = p_sys->i_hq;
#else
if( p_sys->i_hq )
{
id->ff_enc_c->flags |= CODEC_FLAG_HQ;
}
#endif
if( i_ff_codec == CODEC_ID_RAWVIDEO )
{
id->ff_enc_c->pix_fmt = get_ff_chroma( id->f_dst.i_fourcc );
}
return VLC_SUCCESS;
}
static void transcode_video_ffmpeg_close ( sout_stream_t *p_stream, sout_stream_id_t *id )
{
if( id->ff_dec )
{
avcodec_close( id->ff_dec_c );
}
if( id->p_encoder )
{
/* External encoding */
module_Unneed( p_stream, id->p_encoder->p_module );
vlc_object_destroy( id->p_encoder->p_module );
}
else if( id->b_enc_inited )
{
avcodec_close( id->ff_enc_c );
}
if( id->p_ff_pic)
{
free( id->p_ff_pic );
}
if( id->p_ff_pic_tmp0 )
{
free( id->p_ff_pic_tmp0->data[0] );
free( id->p_ff_pic_tmp0 );
}
if( id->p_ff_pic_tmp1)
{
free( id->p_ff_pic_tmp1->data[0] );
free( id->p_ff_pic_tmp1 );
}
if( id->p_ff_pic_tmp2)
{
free( id->p_ff_pic_tmp2->data[0] );
free( id->p_ff_pic_tmp2 );
}
if( id->p_vresample )
{
free( id->p_vresample );
}
free( id->ff_dec_c );
free( id->ff_enc_c );
free( id->p_buffer );
}
static int transcode_video_ffmpeg_process( sout_stream_t *p_stream,
sout_stream_id_t *id, sout_buffer_t *in, sout_buffer_t **out )
{
sout_stream_sys_t *p_sys = p_stream->p_sys;
int i_used;
int i_out;
int b_gotpicture;
AVFrame *frame;
int i_data;
uint8_t *p_data;
*out = NULL;
i_data = in->i_size;
p_data = in->p_buffer;
for( ;; )
{
/* decode frame */
frame = id->p_ff_pic;
p_sys->i_input_pts = in->i_pts;
if( id->ff_dec )
{
i_used = avcodec_decode_video( id->ff_dec_c, frame,
&b_gotpicture,
p_data, i_data );
}
else
{
/* raw video */
avpicture_fill( (AVPicture*)frame,
p_data,
id->ff_dec_c->pix_fmt,
id->ff_dec_c->width, id->ff_dec_c->height );
i_used = i_data;
b_gotpicture = 1;
/* Set PTS */
frame->pts = p_sys->i_input_pts;
}
if( i_used < 0 )
{
msg_Warn( p_stream, "error");
return VLC_EGENERIC;
}
i_data -= i_used;
p_data += i_used;
if( !b_gotpicture )
{
return VLC_SUCCESS;
}
/* Get the pts of the decoded frame if any, otherwise keep the
* interpolated one */
if( frame->pts > 0 )
{
p_sys->i_output_pts = frame->pts;
}
if( !id->b_enc_inited && id->p_encoder )
{
block_t *p_block;
/* XXX hack because of copy packetizer and mpeg4video that can fail
* detecting size */
#if 0
if( id->p_encoder->i_width <= 0 )
{
id->p_encoder->i_width = id->f_dst.i_width =
id->ff_dec_c->width - p_sys->i_crop_left -
p_sys->i_crop_right;
}
if( id->p_encoder->i_height <= 0 )
{
id->p_encoder->i_height = id->f_dst.i_height =
id->ff_dec_c->height - p_sys->i_crop_top -
p_sys->i_crop_bottom;
}
#endif
id->p_encoder->i_bitrate = p_sys->i_vbitrate;
if( !( id->id = p_stream->p_sys->p_out->pf_add( p_stream->p_sys->p_out, &id->f_dst ) ) )
{
msg_Err( p_stream, "cannot add this stream" );
id->b_transcode = VLC_FALSE;
return VLC_EGENERIC;
}
while( (p_block = id->p_encoder->pf_header( id->p_encoder )) )
{
sout_buffer_t *p_out;
p_out = sout_BufferNew( p_stream->p_sout, p_block->i_buffer );
memcpy( p_out->p_buffer, p_block->p_buffer, p_block->i_buffer);
sout_BufferChain( out, p_out );
}
id->b_enc_inited = VLC_TRUE;
}
else if( !id->b_enc_inited )
{
/* XXX hack because of copy packetizer and mpeg4video that can fail
* detecting size */
if( id->ff_enc_c->width <= 0 )
{
id->ff_enc_c->width =
id->f_dst.i_width = id->ff_dec_c->width - p_sys->i_crop_left - p_sys->i_crop_right;
}
if( id->ff_enc_c->height <= 0 )
{
id->ff_enc_c->height =
id->f_dst.i_height = id->ff_dec_c->height - p_sys->i_crop_top - p_sys->i_crop_bottom;
}
/* Make sure we get extradata filled by the encoder */
id->ff_enc_c->extradata_size = 0;
id->ff_enc_c->extradata = NULL;
id->ff_enc_c->flags |= CODEC_FLAG_GLOBAL_HEADER;
if( avcodec_open( id->ff_enc_c, id->ff_enc ) )
{
msg_Err( p_stream, "cannot open encoder" );
return VLC_EGENERIC;
}
id->f_dst.i_extra_data = id->ff_enc_c->extradata_size;
id->f_dst.p_extra_data = id->ff_enc_c->extradata;
id->ff_enc_c->flags &= ~CODEC_FLAG_GLOBAL_HEADER;
if( !( id->id = p_stream->p_sys->p_out->pf_add( p_stream->p_sys->p_out, &id->f_dst ) ) )
{
msg_Err( p_stream, "cannot add this stream" );
transcode_video_ffmpeg_close( p_stream, id );
id->b_transcode = VLC_FALSE;
return VLC_EGENERIC;
}
id->b_enc_inited = VLC_TRUE;
}
/* deinterlace */
if( p_stream->p_sys->b_deinterlace )
{
if( id->p_ff_pic_tmp0 == NULL )
{
int i_size;
uint8_t *buf;
id->p_ff_pic_tmp0 = avcodec_alloc_frame();
i_size = avpicture_get_size( id->ff_dec_c->pix_fmt,
id->ff_dec_c->width, id->ff_dec_c->height );
buf = malloc( i_size );
avpicture_fill( (AVPicture*)id->p_ff_pic_tmp0, buf,
id->ff_enc_c->pix_fmt,
id->ff_dec_c->width, id->ff_dec_c->height );
}
avpicture_deinterlace( (AVPicture*)id->p_ff_pic_tmp0, (AVPicture*)frame,
id->ff_dec_c->pix_fmt,
id->ff_dec_c->width, id->ff_dec_c->height );
frame = id->p_ff_pic_tmp0;
}
/* convert pix format */
if( !id->p_encoder )
if( id->ff_dec_c->pix_fmt != id->ff_enc_c->pix_fmt )
{
if( id->p_ff_pic_tmp1 == NULL )
{
int i_size;
uint8_t *buf;
id->p_ff_pic_tmp1 = avcodec_alloc_frame();
i_size = avpicture_get_size( id->ff_enc_c->pix_fmt,
id->ff_dec_c->width, id->ff_dec_c->height );
buf = malloc( i_size );
avpicture_fill( (AVPicture*)id->p_ff_pic_tmp1, buf,
id->ff_enc_c->pix_fmt,
id->ff_dec_c->width, id->ff_dec_c->height );
}
img_convert( (AVPicture*)id->p_ff_pic_tmp1, id->ff_enc_c->pix_fmt,
(AVPicture*)frame, id->ff_dec_c->pix_fmt,
id->ff_dec_c->width, id->ff_dec_c->height );
frame = id->p_ff_pic_tmp1;
}
/* convert size and crop */
if( !id->p_encoder )
if( id->ff_dec_c->width != id->ff_enc_c->width ||
id->ff_dec_c->height != id->ff_enc_c->height ||
p_sys->i_crop_top > 0 || p_sys->i_crop_bottom > 0 ||
p_sys->i_crop_left > 0 || p_sys->i_crop_right )
{
if( id->p_ff_pic_tmp2 == NULL )
{
int i_size;
uint8_t *buf;
id->p_ff_pic_tmp2 = avcodec_alloc_frame();
i_size = avpicture_get_size( id->ff_enc_c->pix_fmt,
id->ff_enc_c->width, id->ff_enc_c->height );
buf = malloc( i_size );
avpicture_fill( (AVPicture*)id->p_ff_pic_tmp2, buf,
id->ff_enc_c->pix_fmt,
id->ff_enc_c->width, id->ff_enc_c->height );
id->p_vresample =
img_resample_full_init( id->ff_enc_c->width, id->ff_enc_c->height,
id->ff_dec_c->width, id->ff_dec_c->height,
p_stream->p_sys->i_crop_top,
p_stream->p_sys->i_crop_bottom,
p_stream->p_sys->i_crop_left,
p_stream->p_sys->i_crop_right );
}
img_resample( id->p_vresample, (AVPicture*)id->p_ff_pic_tmp2,
(AVPicture*)frame );
frame = id->p_ff_pic_tmp2;
}
/* Set the pts of the frame being encoded (segfaults with mpeg4!)*/
if( id->f_dst.i_fourcc == VLC_FOURCC( 'm', 'p', 'g', 'v' ) )
frame->pts = p_sys->i_output_pts;
else
frame->pts = 0;
/* Interpolate the next PTS
* (needed by the mpeg video packetizer which can send pts <= 0 ) */
if( id->ff_dec_c && id->ff_dec_c->frame_rate > 0 )
{
p_sys->i_output_pts += I64C(1000000) * (2 + frame->repeat_pict) *
id->ff_dec_c->frame_rate_base / (2 * id->ff_dec_c->frame_rate);
}
if( id->p_encoder )
{
/* External encoding */
block_t *p_block;
picture_t pic;
int i_plane;
vout_InitPicture( VLC_OBJECT(p_stream), &pic,
id->ff_dec_c->width, id->ff_dec_c->height,
VLC_FOURCC('I','4','2','0') );
for( i_plane = 0; i_plane < pic.i_planes; i_plane++ )
{
pic.p[i_plane].p_pixels = frame->data[i_plane];
pic.p[i_plane].i_pitch = frame->linesize[i_plane];
}
pic.date = frame->pts;
p_block = id->p_encoder->pf_encode_video( id->p_encoder, &pic );
if( p_block )
{
sout_buffer_t *p_out;
p_out = sout_BufferNew( p_stream->p_sout, p_block->i_buffer );
memcpy( p_out->p_buffer, p_block->p_buffer, p_block->i_buffer);
sout_BufferChain( out, p_out );
}
return VLC_SUCCESS;
}
/* Let ffmpeg select the frame type */
frame->pict_type = 0;
i_out = avcodec_encode_video( id->ff_enc_c, id->p_buffer,
id->i_buffer, frame );
if( i_out > 0 )
{
sout_buffer_t *p_out;
p_out = sout_BufferNew( p_stream->p_sout, i_out );
memcpy( p_out->p_buffer, id->p_buffer, i_out );
p_out->i_size = i_out;
if( id->ff_enc_c->coded_frame->pts != 0 &&
p_sys->i_buggy_pts_detect != id->ff_enc_c->coded_frame->pts )
{
p_sys->i_buggy_pts_detect = id->ff_enc_c->coded_frame->pts;
/* FIXME, 3-2 pulldown is not handled correctly */
p_out->i_length = in->i_length;
p_out->i_pts = id->ff_enc_c->coded_frame->pts;
if( !id->ff_enc_c->delay ||
( id->ff_enc_c->coded_frame->pict_type != FF_I_TYPE &&
id->ff_enc_c->coded_frame->pict_type != FF_P_TYPE ) )
{
p_out->i_dts = p_out->i_pts;
}
else
{
if( p_sys->i_last_ref_pts )
{
p_out->i_dts = p_sys->i_last_ref_pts;
}
else
{
/* Let's put something sensible */
p_out->i_dts = p_out->i_pts;
}
p_sys->i_last_ref_pts = p_out->i_pts;
}
}
else
{
/* Buggy libavcodec which doesn't update coded_frame->pts
* correctly */
p_out->i_length = in->i_length;
p_out->i_dts = in->i_dts;
p_out->i_pts = in->i_dts;
}
sout_BufferChain( out, p_out );
}
if( i_data <= 0 )
{
return VLC_SUCCESS;
}
}
return VLC_SUCCESS;
}
/*****************************************************************************
* transcode_video_ffmpeg_getframebuf:
*
* Callback used by ffmpeg to get a frame buffer.
* We use it to get the right PTS for each decoded picture.
*****************************************************************************/
static int transcode_video_ffmpeg_getframebuf(struct AVCodecContext *p_context,
AVFrame *p_frame)
{
sout_stream_sys_t *p_sys = (sout_stream_sys_t *)p_context->opaque;
/* Set PTS */
p_frame->pts = p_sys->i_input_pts;
return avcodec_default_get_buffer( p_context, p_frame );
}