asf.c
上传用户:riyaled888
上传日期:2009-03-27
资源大小:7338k
文件大小:37k
- /*****************************************************************************
- * asf.c: asf muxer module for vlc
- *****************************************************************************
- * Copyright (C) 2003-2004 VideoLAN
- * $Id: asf.c 8888 2004-10-02 17:57:33Z zorglub $
- *
- * Authors: Laurent Aimar <fenrir@via.ecp.fr>
- * Gildas Bazin <gbazin@videolan.org>
- *
- * 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 <vlc/vlc.h>
- #include <vlc/input.h>
- #include <vlc/sout.h>
- #include "codecs.h"
- typedef GUID guid_t;
- #define MAX_ASF_TRACKS 128
- /*****************************************************************************
- * Module descriptor
- *****************************************************************************/
- static int Open ( vlc_object_t * );
- static void Close ( vlc_object_t * );
- #define SOUT_CFG_PREFIX "sout-asf-"
- #define TITLE_TEXT N_("Title")
- #define TITLE_LONGTEXT N_("Allows you to define the title that will be put "
- "in ASF comments.")
- #define AUTHOR_TEXT N_("Author")
- #define AUTHOR_LONGTEXT N_("Allows you to define the author that will be put "
- "in ASF comments.")
- #define COPYRIGHT_TEXT N_("Copyright")
- #define COPYRIGHT_LONGTEXT N_("Allows you to define the copyright string "
- "that will be put in ASF comments.")
- #define COMMENT_TEXT N_("Comment")
- #define COMMENT_LONGTEXT N_("Allows you to define the comment that will be "
- "put in ASF comments.")
- #define RATING_TEXT N_("Rating")
- #define RATING_LONGTEXT N_("Allows you to define the "rating" that will "
- "be put in ASF comments.")
- vlc_module_begin();
- set_description( _("ASF muxer") );
- set_capability( "sout mux", 5 );
- add_shortcut( "asf" );
- add_shortcut( "asfh" );
- set_callbacks( Open, Close );
- add_string( SOUT_CFG_PREFIX "title", "", NULL, TITLE_TEXT, TITLE_LONGTEXT,
- VLC_TRUE );
- add_string( SOUT_CFG_PREFIX "author", "", NULL, AUTHOR_TEXT,
- AUTHOR_LONGTEXT, VLC_TRUE );
- add_string( SOUT_CFG_PREFIX "copyright","", NULL, COPYRIGHT_TEXT,
- COPYRIGHT_LONGTEXT, VLC_TRUE );
- add_string( SOUT_CFG_PREFIX "comment", "", NULL, COMMENT_TEXT,
- COMMENT_LONGTEXT, VLC_TRUE );
- add_string( SOUT_CFG_PREFIX "rating", "", NULL, RATING_TEXT,
- RATING_LONGTEXT, VLC_TRUE );
- vlc_module_end();
- /*****************************************************************************
- * Locales prototypes
- *****************************************************************************/
- static const char *ppsz_sout_options[] = {
- "title", "author", "copyright", "comment", "rating", NULL
- };
- static int Control ( sout_mux_t *, int, va_list );
- static int AddStream( sout_mux_t *, sout_input_t * );
- static int DelStream( sout_mux_t *, sout_input_t * );
- static int Mux ( sout_mux_t * );
- typedef struct
- {
- int i_id;
- int i_cat;
- /* codec information */
- uint16_t i_tag; /* for audio */
- vlc_fourcc_t i_fourcc; /* for video */
- char *psz_name; /* codec name */
- int i_sequence;
- int i_extra;
- uint8_t *p_extra;
- es_format_t fmt;
- } asf_track_t;
- struct sout_mux_sys_t
- {
- guid_t fid; /* file id */
- int i_packet_size;
- int64_t i_packet_count;
- mtime_t i_dts_first;
- mtime_t i_dts_last;
- mtime_t i_preroll_time;
- int64_t i_bitrate;
- int i_track;
- asf_track_t track[MAX_ASF_TRACKS];
- vlc_bool_t b_write_header;
- block_t *pk;
- int i_pk_used;
- int i_pk_frame;
- mtime_t i_pk_dts;
- vlc_bool_t b_asf_http;
- int i_seq;
- /* meta data */
- char *psz_title;
- char *psz_author;
- char *psz_copyright;
- char *psz_comment;
- char *psz_rating;
- };
- static int MuxGetStream( sout_mux_t *, int *pi_stream, mtime_t *pi_dts );
- static block_t *asf_header_create( sout_mux_t *, vlc_bool_t );
- static block_t *asf_packet_create( sout_mux_t *, asf_track_t *, block_t * );
- static block_t *asf_stream_end_create( sout_mux_t *);
- static block_t *asf_packet_flush( sout_mux_t * );
- typedef struct
- {
- int i_buffer_size;
- int i_buffer;
- uint8_t *p_buffer;
- } bo_t;
- static void bo_init ( bo_t *, uint8_t *, int );
- static void bo_add_u8 ( bo_t *, uint8_t );
- static void bo_addle_u16( bo_t *, uint16_t );
- static void bo_addle_u32( bo_t *, uint32_t );
- static void bo_addle_u64( bo_t *, uint64_t );
- static void bo_add_mem ( bo_t *, uint8_t *, int );
- static void bo_addle_str16( bo_t *, char * );
- /*****************************************************************************
- * Open:
- *****************************************************************************/
- static int Open( vlc_object_t *p_this )
- {
- sout_mux_t *p_mux = (sout_mux_t*)p_this;
- sout_mux_sys_t *p_sys;
- vlc_value_t val;
- int i;
- msg_Dbg( p_mux, "Asf muxer opened" );
- sout_CfgParse( p_mux, SOUT_CFG_PREFIX, ppsz_sout_options, p_mux->p_cfg );
- p_mux->pf_control = Control;
- p_mux->pf_addstream = AddStream;
- p_mux->pf_delstream = DelStream;
- p_mux->pf_mux = Mux;
- p_mux->p_sys = p_sys = malloc( sizeof( sout_mux_sys_t ) );
- p_sys->b_asf_http = p_mux->psz_mux && !strcmp( p_mux->psz_mux, "asfh" );
- if( p_sys->b_asf_http )
- {
- msg_Dbg( p_mux, "creating asf stream to be used with mmsh" );
- }
- p_sys->pk = NULL;
- p_sys->i_pk_used = 0;
- p_sys->i_pk_frame = 0;
- p_sys->i_dts_first = -1;
- p_sys->i_dts_last = 0;
- p_sys->i_preroll_time = 2000;
- p_sys->i_bitrate = 0;
- p_sys->i_seq = 0;
- p_sys->b_write_header = VLC_TRUE;
- p_sys->i_track = 0;
- p_sys->i_packet_size = 4096;
- p_sys->i_packet_count= 0;
- /* Generate a random fid */
- srand( mdate() & 0xffffffff );
- p_sys->fid.Data1 = 0xbabac001;
- p_sys->fid.Data2 = ( (uint64_t)rand() << 16 ) / RAND_MAX;
- p_sys->fid.Data3 = ( (uint64_t)rand() << 16 ) / RAND_MAX;
- for( i = 0; i < 8; i++ )
- {
- p_sys->fid.Data4[i] = ( (uint64_t)rand() << 8 ) / RAND_MAX;
- }
- /* Meta data */
- var_Get( p_mux, SOUT_CFG_PREFIX "title", &val );
- p_sys->psz_title = val.psz_string;
- var_Get( p_mux, SOUT_CFG_PREFIX "author", &val );
- p_sys->psz_author = val.psz_string;
- var_Get( p_mux, SOUT_CFG_PREFIX "copyright", &val );
- p_sys->psz_copyright = val.psz_string;
- var_Get( p_mux, SOUT_CFG_PREFIX "comment", &val );
- p_sys->psz_comment = val.psz_string;
- var_Get( p_mux, SOUT_CFG_PREFIX "rating", &val );
- p_sys->psz_rating = val.psz_string;
- msg_Dbg( p_mux, "meta data: title='%s' author='%s' copyright='%s' "
- "comment='%s' rating='%s'",
- p_sys->psz_title, p_sys->psz_author, p_sys->psz_copyright,
- p_sys->psz_comment, p_sys->psz_rating );
- return VLC_SUCCESS;
- }
- /*****************************************************************************
- * Close:
- *****************************************************************************/
- static void Close( vlc_object_t * p_this )
- {
- sout_mux_t *p_mux = (sout_mux_t*)p_this;
- sout_mux_sys_t *p_sys = p_mux->p_sys;
- block_t *out;
- int i;
- msg_Dbg( p_mux, "Asf muxer closed" );
- /* Flush last packet if any */
- if( (out = asf_packet_flush( p_mux ) ) )
- {
- sout_AccessOutWrite( p_mux->p_access, out );
- }
- if( ( out = asf_stream_end_create( p_mux ) ) )
- {
- sout_AccessOutWrite( p_mux->p_access, out );
- }
- /* rewrite header */
- if( !sout_AccessOutSeek( p_mux->p_access, 0 ) )
- {
- out = asf_header_create( p_mux, VLC_FALSE );
- sout_AccessOutWrite( p_mux->p_access, out );
- }
- for( i = 0; i < p_sys->i_track; i++ )
- {
- free( p_sys->track[i].p_extra );
- es_format_Clean( &p_sys->track[i].fmt );
- }
- free( p_sys );
- }
- /*****************************************************************************
- * Capability:
- *****************************************************************************/
- static int Control( sout_mux_t *p_mux, int i_query, va_list args )
- {
- sout_mux_sys_t *p_sys = p_mux->p_sys;
- vlc_bool_t *pb_bool;
- char **ppsz;
- switch( i_query )
- {
- case MUX_CAN_ADD_STREAM_WHILE_MUXING:
- pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t * );
- if( p_sys->b_asf_http ) *pb_bool = VLC_TRUE;
- else *pb_bool = VLC_FALSE;
- return VLC_SUCCESS;
- case MUX_GET_ADD_STREAM_WAIT:
- pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t * );
- *pb_bool = VLC_TRUE;
- return VLC_SUCCESS;
- case MUX_GET_MIME:
- ppsz = (char**)va_arg( args, char ** );
- if( p_sys->b_asf_http )
- *ppsz = strdup( "video/x-ms-asf-stream" );
- else
- *ppsz = strdup( "video/x-ms-asf" );
- return VLC_SUCCESS;
- default:
- return VLC_EGENERIC;
- }
- }
- /*****************************************************************************
- * AddStream:
- *****************************************************************************/
- static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
- {
- sout_mux_sys_t *p_sys = p_mux->p_sys;
- asf_track_t *tk;
- bo_t bo;
- msg_Dbg( p_mux, "adding input" );
- if( p_sys->i_track >= MAX_ASF_TRACKS )
- {
- msg_Dbg( p_mux, "cannot add this track (too much track)" );
- return VLC_EGENERIC;
- }
- tk = p_input->p_sys = &p_sys->track[p_sys->i_track];
- tk->i_id = p_sys->i_track + 1;
- tk->i_cat = p_input->p_fmt->i_cat;
- tk->i_sequence = 0;
- switch( tk->i_cat )
- {
- case AUDIO_ES:
- {
- int i_blockalign = p_input->p_fmt->audio.i_blockalign;
- int i_bitspersample = 0;
- int i_extra = 0;
- switch( p_input->p_fmt->i_codec )
- {
- case VLC_FOURCC( 'a', '5', '2', ' ' ):
- tk->i_tag = WAVE_FORMAT_A52;
- tk->psz_name = "A/52";
- break;
- case VLC_FOURCC( 'm', 'p', 'g', 'a' ):
- #if 1
- tk->psz_name = "MPEG Audio Layer 3";
- tk->i_tag = WAVE_FORMAT_MPEGLAYER3;
- i_blockalign = 1;
- i_extra = 12;
- break;
- #else
- tk->psz_name = "MPEG Audio Layer 1/2";
- tk->i_tag = WAVE_FORMAT_MPEG;
- i_blockalign = 1;
- i_extra = 22;
- break;
- #endif
- case VLC_FOURCC( 'w', 'm', 'a', '1' ):
- tk->psz_name = "Windows Media Audio 1";
- tk->i_tag = WAVE_FORMAT_WMA1;
- break;
- case VLC_FOURCC( 'w', 'm', 'a', '2' ):
- tk->psz_name = "Windows Media Audio 2";
- tk->i_tag = WAVE_FORMAT_WMA2;
- break;
- case VLC_FOURCC( 'w', 'm', 'a', '3' ):
- tk->psz_name = "Windows Media Audio 3";
- tk->i_tag = WAVE_FORMAT_WMA3;
- break;
- /* raw codec */
- case VLC_FOURCC( 'u', '8', ' ', ' ' ):
- tk->psz_name = "Raw audio 8bits";
- tk->i_tag = WAVE_FORMAT_PCM;
- i_blockalign= p_input->p_fmt->audio.i_channels;
- i_bitspersample = 8;
- break;
- case VLC_FOURCC( 's', '1', '6', 'l' ):
- tk->psz_name = "Raw audio 16bits";
- tk->i_tag = WAVE_FORMAT_PCM;
- i_blockalign= 2 * p_input->p_fmt->audio.i_channels;
- i_bitspersample = 16;
- break;
- case VLC_FOURCC( 's', '2', '4', 'l' ):
- tk->psz_name = "Raw audio 24bits";
- tk->i_tag = WAVE_FORMAT_PCM;
- i_blockalign= 3 * p_input->p_fmt->audio.i_channels;
- i_bitspersample = 24;
- break;
- case VLC_FOURCC( 's', '3', '2', 'l' ):
- tk->psz_name = "Raw audio 32bits";
- tk->i_tag = WAVE_FORMAT_PCM;
- i_blockalign= 4 * p_input->p_fmt->audio.i_channels;
- i_bitspersample = 32;
- break;
- default:
- return VLC_EGENERIC;
- }
- tk->i_extra = sizeof( WAVEFORMATEX ) +
- p_input->p_fmt->i_extra + i_extra;
- tk->p_extra = malloc( tk->i_extra );
- bo_init( &bo, tk->p_extra, tk->i_extra );
- bo_addle_u16( &bo, tk->i_tag );
- bo_addle_u16( &bo, p_input->p_fmt->audio.i_channels );
- bo_addle_u32( &bo, p_input->p_fmt->audio.i_rate );
- bo_addle_u32( &bo, p_input->p_fmt->i_bitrate / 8 );
- bo_addle_u16( &bo, i_blockalign );
- bo_addle_u16( &bo, i_bitspersample );
- if( p_input->p_fmt->i_extra > 0 )
- {
- bo_addle_u16( &bo, p_input->p_fmt->i_extra );
- bo_add_mem ( &bo, p_input->p_fmt->p_extra,
- p_input->p_fmt->i_extra );
- }
- else
- {
- bo_addle_u16( &bo, i_extra );
- if( tk->i_tag == WAVE_FORMAT_MPEGLAYER3 )
- {
- msg_Dbg( p_mux, "adding mp3 header" );
- bo_addle_u16( &bo, 1 ); /* wId */
- bo_addle_u32( &bo, 2 ); /* fdwFlags */
- bo_addle_u16( &bo, 1152 ); /* nBlockSize */
- bo_addle_u16( &bo, 1 ); /* nFramesPerBlock */
- bo_addle_u16( &bo, 1393 ); /* nCodecDelay */
- }
- else if( tk->i_tag == WAVE_FORMAT_MPEG )
- {
- msg_Dbg( p_mux, "adding mp2 header" );
- bo_addle_u16( &bo, 2 ); /* fwHeadLayer */
- bo_addle_u32( &bo, p_input->p_fmt->i_bitrate );
- bo_addle_u16( &bo, p_input->p_fmt->audio.i_channels == 2 ?1:8 );
- bo_addle_u16( &bo, 0 ); /* fwHeadModeExt */
- bo_addle_u16( &bo, 1 ); /* wHeadEmphasis */
- bo_addle_u16( &bo, 16 ); /* fwHeadFlags */
- bo_addle_u32( &bo, 0 ); /* dwPTSLow */
- bo_addle_u32( &bo, 0 ); /* dwPTSHigh */
- }
- }
- if( p_input->p_fmt->i_bitrate > 24000 )
- {
- p_sys->i_bitrate += p_input->p_fmt->i_bitrate;
- }
- else
- {
- p_sys->i_bitrate += 512000;
- }
- break;
- }
- case VIDEO_ES:
- {
- tk->i_extra = 11 + sizeof( BITMAPINFOHEADER ) +
- p_input->p_fmt->i_extra;
- tk->p_extra = malloc( tk->i_extra );
- bo_init( &bo, tk->p_extra, tk->i_extra );
- bo_addle_u32( &bo, p_input->p_fmt->video.i_width );
- bo_addle_u32( &bo, p_input->p_fmt->video.i_height );
- bo_add_u8 ( &bo, 0x02 ); /* flags */
- bo_addle_u16( &bo, sizeof( BITMAPINFOHEADER ) +
- p_input->p_fmt->i_extra );
- bo_addle_u32( &bo, sizeof( BITMAPINFOHEADER ) +
- p_input->p_fmt->i_extra );
- bo_addle_u32( &bo, p_input->p_fmt->video.i_width );
- bo_addle_u32( &bo, p_input->p_fmt->video.i_height );
- bo_addle_u16( &bo, 1 );
- bo_addle_u16( &bo, 24 );
- if( p_input->p_fmt->i_codec == VLC_FOURCC('m','p','4','v') )
- {
- tk->psz_name = "MPEG-4 Video";
- tk->i_fourcc = VLC_FOURCC( 'M', 'P', '4', 'S' );
- }
- else if( p_input->p_fmt->i_codec == VLC_FOURCC('D','I','V','3') )
- {
- tk->psz_name = "MSMPEG-4 V3 Video";
- tk->i_fourcc = VLC_FOURCC( 'M', 'P', '4', '3' );
- }
- else if( p_input->p_fmt->i_codec == VLC_FOURCC('D','I','V','2') )
- {
- tk->psz_name = "MSMPEG-4 V2 Video";
- tk->i_fourcc = VLC_FOURCC( 'M', 'P', '4', '2' );
- }
- else if( p_input->p_fmt->i_codec == VLC_FOURCC('D','I','V','1') )
- {
- tk->psz_name = "MSMPEG-4 V1 Video";
- tk->i_fourcc = VLC_FOURCC( 'M', 'P', 'G', '4' );
- }
- else if( p_input->p_fmt->i_codec == VLC_FOURCC('W','M','V','1') )
- {
- tk->psz_name = "Windows Media Video 1";
- tk->i_fourcc = VLC_FOURCC( 'W', 'M', 'V', '1' );
- }
- else if( p_input->p_fmt->i_codec == VLC_FOURCC('W','M','V','2') )
- {
- tk->psz_name = "Windows Media Video 2";
- tk->i_fourcc = VLC_FOURCC( 'W', 'M', 'V', '2' );
- }
- else if( p_input->p_fmt->i_codec == VLC_FOURCC('W','M','V','3') )
- {
- tk->psz_name = "Windows Media Video 3";
- tk->i_fourcc = VLC_FOURCC( 'W', 'M', 'V', '3' );
- }
- else
- {
- tk->psz_name = _("Unknown Video");
- tk->i_fourcc = p_input->p_fmt->i_codec;
- }
- bo_add_mem( &bo, (uint8_t*)&tk->i_fourcc, 4 );
- bo_addle_u32( &bo, 0 );
- bo_addle_u32( &bo, 0 );
- bo_addle_u32( &bo, 0 );
- bo_addle_u32( &bo, 0 );
- bo_addle_u32( &bo, 0 );
- if( p_input->p_fmt->i_extra > 0 )
- {
- bo_add_mem ( &bo, p_input->p_fmt->p_extra,
- p_input->p_fmt->i_extra );
- }
- if( p_input->p_fmt->i_bitrate > 50000 )
- {
- p_sys->i_bitrate += p_input->p_fmt->i_bitrate;
- }
- else
- {
- p_sys->i_bitrate += 1000000;
- }
- break;
- }
- default:
- msg_Err(p_mux, "unhandled track type" );
- return VLC_EGENERIC;
- }
- es_format_Copy( &tk->fmt, p_input->p_fmt );
- p_sys->i_track++;
- return VLC_SUCCESS;
- }
- /*****************************************************************************
- * DelStream:
- *****************************************************************************/
- static int DelStream( sout_mux_t *p_mux, sout_input_t *p_input )
- {
- msg_Dbg( p_mux, "removing input" );
- return VLC_SUCCESS;
- }
- /*****************************************************************************
- * Mux:
- *****************************************************************************/
- static int Mux( sout_mux_t *p_mux )
- {
- sout_mux_sys_t *p_sys = p_mux->p_sys;
- if( p_sys->b_write_header )
- {
- block_t *out = asf_header_create( p_mux, VLC_TRUE );
- out->i_flags |= BLOCK_FLAG_HEADER;
- sout_AccessOutWrite( p_mux->p_access, out );
- p_sys->b_write_header = VLC_FALSE;
- }
- for( ;; )
- {
- sout_input_t *p_input;
- asf_track_t *tk;
- int i_stream;
- mtime_t i_dts;
- block_t *data;
- block_t *pk;
- if( MuxGetStream( p_mux, &i_stream, &i_dts ) )
- {
- /* not enough data */
- return VLC_SUCCESS;
- }
- if( p_sys->i_dts_first < 0 )
- {
- p_sys->i_dts_first = i_dts;
- }
- if( p_sys->i_dts_last < i_dts )
- {
- p_sys->i_dts_last = i_dts;
- }
- p_input = p_mux->pp_inputs[i_stream];
- tk = (asf_track_t*)p_input->p_sys;
- data = block_FifoGet( p_input->p_fifo );
- if( ( pk = asf_packet_create( p_mux, tk, data ) ) )
- {
- sout_AccessOutWrite( p_mux->p_access, pk );
- }
- }
- return VLC_SUCCESS;
- }
- static int MuxGetStream( sout_mux_t *p_mux, int *pi_stream, mtime_t *pi_dts )
- {
- mtime_t i_dts;
- int i_stream;
- int i;
- for( i = 0, i_dts = 0, i_stream = -1; i < p_mux->i_nb_inputs; i++ )
- {
- sout_input_t *p_input = p_mux->pp_inputs[i];
- block_t *p_data;
- if( p_input->p_fifo->i_depth <= 0 )
- {
- if( p_input->p_fmt->i_cat == AUDIO_ES ||
- p_input->p_fmt->i_cat == VIDEO_ES )
- {
- /* We need that audio+video fifo contain at least 1 packet */
- return VLC_EGENERIC;
- }
- /* SPU */
- continue;
- }
- p_data = block_FifoShow( p_input->p_fifo );
- if( i_stream == -1 || p_data->i_dts < i_dts )
- {
- i_stream = i;
- i_dts = p_data->i_dts;
- }
- }
- *pi_stream = i_stream;
- *pi_dts = i_dts;
- return VLC_SUCCESS;
- }
- /****************************************************************************
- * Asf header construction
- ****************************************************************************/
- /****************************************************************************
- * Buffer out
- ****************************************************************************/
- static void bo_init( bo_t *p_bo, uint8_t *p_buffer, int i_size )
- {
- p_bo->i_buffer_size = i_size;
- p_bo->i_buffer = 0;
- p_bo->p_buffer = p_buffer;
- }
- static void bo_add_u8( bo_t *p_bo, uint8_t i )
- {
- if( p_bo->i_buffer < p_bo->i_buffer_size )
- {
- p_bo->p_buffer[p_bo->i_buffer] = i;
- }
- p_bo->i_buffer++;
- }
- static void bo_addle_u16( bo_t *p_bo, uint16_t i )
- {
- bo_add_u8( p_bo, i &0xff );
- bo_add_u8( p_bo, ( ( i >> 8) &0xff ) );
- }
- static void bo_addle_u32( bo_t *p_bo, uint32_t i )
- {
- bo_addle_u16( p_bo, i &0xffff );
- bo_addle_u16( p_bo, ( ( i >> 16) &0xffff ) );
- }
- static void bo_addle_u64( bo_t *p_bo, uint64_t i )
- {
- bo_addle_u32( p_bo, i &0xffffffff );
- bo_addle_u32( p_bo, ( ( i >> 32) &0xffffffff ) );
- }
- static void bo_add_mem( bo_t *p_bo, uint8_t *p_mem, int i_size )
- {
- int i_copy = __MIN( i_size, p_bo->i_buffer_size - p_bo->i_buffer );
- if( i_copy > 0 )
- {
- memcpy( &p_bo->p_buffer[p_bo->i_buffer], p_mem, i_copy );
- }
- p_bo->i_buffer += i_size;
- }
- static void bo_addle_str16( bo_t *bo, char *str )
- {
- bo_addle_u16( bo, strlen( str ) + 1 );
- for( ;; )
- {
- uint16_t c = (uint8_t)*str++;
- bo_addle_u16( bo, c );
- if( c == ' ' ) break;
- }
- }
- static void bo_addle_str16_nosize( bo_t *bo, char *str )
- {
- for( ;; )
- {
- uint16_t c = (uint8_t)*str++;
- bo_addle_u16( bo, c );
- if( c == ' ' ) break;
- }
- }
- /****************************************************************************
- * GUID definitions
- ****************************************************************************/
- static void bo_add_guid( bo_t *p_bo, const guid_t *id )
- {
- int i;
- bo_addle_u32( p_bo, id->Data1 );
- bo_addle_u16( p_bo, id->Data2 );
- bo_addle_u16( p_bo, id->Data3 );
- for( i = 0; i < 8; i++ )
- {
- bo_add_u8( p_bo, id->Data4[i] );
- }
- }
- static const guid_t asf_object_header_guid =
- {0x75B22630, 0x668E, 0x11CF, {0xA6, 0xD9, 0x00, 0xAA, 0x00, 0x62, 0xCE, 0x6C}};
- static const guid_t asf_object_data_guid =
- {0x75B22636, 0x668E, 0x11CF, {0xA6, 0xD9, 0x00, 0xAA, 0x00, 0x62, 0xCE, 0x6C}};
- static const guid_t asf_object_file_properties_guid =
- {0x8cabdca1, 0xa947, 0x11cf, {0x8e, 0xe4, 0x00, 0xC0, 0x0C, 0x20, 0x53, 0x65}};
- static const guid_t asf_object_stream_properties_guid =
- {0xB7DC0791, 0xA9B7, 0x11CF, {0x8E, 0xE6, 0x00, 0xC0, 0x0C, 0x20, 0x53, 0x65}};
- static const guid_t asf_object_header_extention_guid =
- {0x5FBF03B5, 0xA92E, 0x11CF, {0x8E, 0xE3, 0x00, 0xC0, 0x0C, 0x20, 0x53, 0x65}};
- static const guid_t asf_object_stream_type_audio =
- {0xF8699E40, 0x5B4D, 0x11CF, {0xA8, 0xFD, 0x00, 0x80, 0x5F, 0x5C, 0x44, 0x2B}};
- static const guid_t asf_object_stream_type_video =
- {0xbc19efc0, 0x5B4D, 0x11CF, {0xA8, 0xFD, 0x00, 0x80, 0x5F, 0x5C, 0x44, 0x2B}};
- static const guid_t asf_guid_audio_conceal_none =
- {0x20FB5700, 0x5B55, 0x11CF, {0xA8, 0xFD, 0x00, 0x80, 0x5F, 0x5C, 0x44, 0x2B}};
- static const guid_t asf_guid_video_conceal_none =
- {0x20FB5700, 0x5B55, 0x11CF, {0xA8, 0xFD, 0x00, 0x80, 0x5F, 0x5C, 0x44, 0x2B}};
- static const guid_t asf_guid_reserved_1 =
- {0xABD3D211, 0xA9BA, 0x11cf, {0x8E, 0xE6, 0x00, 0xC0, 0x0C ,0x20, 0x53, 0x65}};
- static const guid_t asf_object_codec_comment_guid =
- {0x86D15240, 0x311D, 0x11D0, {0xA3, 0xA4, 0x00, 0xA0, 0xC9, 0x03, 0x48, 0xF6}};
- static const guid_t asf_object_codec_comment_reserved_guid =
- {0x86D15241, 0x311D, 0x11D0, {0xA3, 0xA4, 0x00, 0xA0, 0xC9, 0x03, 0x48, 0xF6}};
- static const guid_t asf_object_content_description_guid =
- {0x75B22633, 0x668E, 0x11CF, {0xa6, 0xd9, 0x00, 0xaa, 0x00, 0x62, 0xce, 0x6c}};
- static const guid_t asf_object_index_guid =
- {0x33000890, 0xE5B1, 0x11CF, {0x89, 0xF4, 0x00, 0xA0, 0xC9, 0x03, 0x49, 0xCB}};
- static const guid_t asf_object_metadata_guid =
- {0xC5F8CBEA, 0x5BAF, 0x4877, {0x84, 0x67, 0xAA, 0x8C, 0x44, 0xFA, 0x4C, 0xCA}};
- /****************************************************************************
- * Misc
- ****************************************************************************/
- static void asf_chunk_add( bo_t *bo,
- int i_type, int i_len, int i_flags, int i_seq )
- {
- bo_addle_u16( bo, i_type );
- bo_addle_u16( bo, i_len + 8 );
- bo_addle_u32( bo, i_seq );
- bo_addle_u16( bo, i_flags );
- bo_addle_u16( bo, i_len + 8 );
- }
- static block_t *asf_header_create( sout_mux_t *p_mux, vlc_bool_t b_broadcast )
- {
- sout_mux_sys_t *p_sys = p_mux->p_sys;
- asf_track_t *tk;
- mtime_t i_duration = 0;
- int i_size, i;
- int i_ci_size, i_cm_size = 0, i_cd_size = 0;
- block_t *out;
- bo_t bo;
- msg_Dbg( p_mux, "Asf muxer creating header" );
- if( p_sys->i_dts_first > 0 )
- {
- i_duration = p_sys->i_dts_last - p_sys->i_dts_first;
- if( i_duration < 0 ) i_duration = 0;
- }
- /* calculate header size */
- i_size = 30 + 104 + 46;
- i_ci_size = 44;
- for( i = 0; i < p_sys->i_track; i++ )
- {
- i_size += 78 + p_sys->track[i].i_extra;
- i_ci_size += 8 + 2 * strlen( p_sys->track[i].psz_name );
- if( p_sys->track[i].i_cat == AUDIO_ES )
- {
- i_ci_size += 4;
- }
- else if( p_sys->track[i].i_cat == VIDEO_ES )
- {
- i_ci_size += 6;
- }
- }
- /* size of the content description object */
- if( *p_sys->psz_title || *p_sys->psz_author || *p_sys->psz_copyright ||
- *p_sys->psz_comment || *p_sys->psz_rating )
- {
- i_cd_size = 34 + 2 * ( strlen( p_sys->psz_title ) + 1 +
- strlen( p_sys->psz_author ) + 1 +
- strlen( p_sys->psz_copyright ) + 1 +
- strlen( p_sys->psz_comment ) + 1 +
- strlen( p_sys->psz_rating ) + 1 );
- }
- /* size of the metadata object */
- for( i = 0; i < p_sys->i_track; i++ )
- {
- if( p_sys->track[i].i_cat == VIDEO_ES )
- {
- i_cm_size = 26 + 2 * (16 + 2 * sizeof("AspectRatio?"));
- break;
- }
- }
- i_size += i_ci_size + i_cd_size + i_cm_size;
- if( p_sys->b_asf_http )
- {
- out = block_New( p_mux, i_size + 50 + 12 );
- bo_init( &bo, out->p_buffer, i_size + 50 + 12 );
- asf_chunk_add( &bo, 0x4824, i_size + 50, 0xc00, p_sys->i_seq++ );
- }
- else
- {
- out = block_New( p_mux, i_size + 50 );
- bo_init( &bo, out->p_buffer, i_size + 50 );
- }
- /* header object */
- bo_add_guid ( &bo, &asf_object_header_guid );
- bo_addle_u64( &bo, i_size );
- bo_addle_u32( &bo, 2 + p_sys->i_track );
- bo_add_u8 ( &bo, 1 );
- bo_add_u8 ( &bo, 2 );
- /* sub object */
- /* file properties */
- bo_add_guid ( &bo, &asf_object_file_properties_guid );
- bo_addle_u64( &bo, 104 );
- bo_add_guid ( &bo, &p_sys->fid );
- bo_addle_u64( &bo, i_size + 50 + p_sys->i_packet_count *
- p_sys->i_packet_size ); /* file size */
- bo_addle_u64( &bo, 0 ); /* creation date */
- bo_addle_u64( &bo, b_broadcast ? 0xffffffffLL : p_sys->i_packet_count );
- bo_addle_u64( &bo, i_duration * 10 ); /* play duration (100ns) */
- bo_addle_u64( &bo, i_duration * 10 ); /* send duration (100ns) */
- bo_addle_u64( &bo, p_sys->i_preroll_time ); /* preroll duration (ms) */
- bo_addle_u32( &bo, b_broadcast ? 0x01 : 0x00); /* flags */
- bo_addle_u32( &bo, p_sys->i_packet_size ); /* packet size min */
- bo_addle_u32( &bo, p_sys->i_packet_size ); /* packet size max */
- bo_addle_u32( &bo, p_sys->i_bitrate ); /* maxbitrate */
- /* header extention */
- bo_add_guid ( &bo, &asf_object_header_extention_guid );
- bo_addle_u64( &bo, 46 + i_cm_size );
- bo_add_guid ( &bo, &asf_guid_reserved_1 );
- bo_addle_u16( &bo, 6 );
- bo_addle_u32( &bo, 0 + i_cm_size );
- /* metadata object (part of header extension) */
- if( i_cm_size )
- {
- int64_t i_num, i_den;
- int i_dst_num, i_dst_den;
- for( i = 0; i < p_sys->i_track; i++ )
- if( p_sys->track[i].i_cat == VIDEO_ES ) break;
- i_num = p_sys->track[i].fmt.video.i_aspect *
- (int64_t)p_sys->track[i].fmt.video.i_height;
- i_den = VOUT_ASPECT_FACTOR * p_sys->track[i].fmt.video.i_width;
- vlc_reduce( &i_dst_num, &i_dst_den, i_num, i_den, 0 );
- msg_Dbg( p_mux, "pixel aspect-ratio: %i/%i", i_dst_num, i_dst_den );
- bo_add_guid ( &bo, &asf_object_metadata_guid );
- bo_addle_u64( &bo, i_cm_size );
- bo_addle_u16( &bo, 2 ); /* description records count */
- /* 1st description record */
- bo_addle_u16( &bo, 0 ); /* reserved */
- bo_addle_u16( &bo, i + 1 ); /* stream number (0 for the whole file) */
- bo_addle_u16( &bo, 2 * sizeof("AspectRatioX") ); /* name length */
- bo_addle_u16( &bo, 0x3 /* DWORD */ ); /* data type */
- bo_addle_u32( &bo, 4 ); /* data length */
- bo_addle_str16_nosize( &bo, "AspectRatioX" );
- bo_addle_u32( &bo, i_dst_num ); /* data */
- /* 2nd description record */
- bo_addle_u16( &bo, 0 ); /* reserved */
- bo_addle_u16( &bo, i + 1 ); /* stream number (0 for the whole file) */
- bo_addle_u16( &bo, 2 * sizeof("AspectRatioY") ); /* name length */
- bo_addle_u16( &bo, 0x3 /* DWORD */ ); /* data type */
- bo_addle_u32( &bo, 4 ); /* data length */
- bo_addle_str16_nosize( &bo, "AspectRatioY" );
- bo_addle_u32( &bo, i_dst_den ); /* data */
- }
- /* content description header */
- if( i_cd_size > 0 )
- {
- bo_add_guid ( &bo, &asf_object_content_description_guid );
- bo_addle_u64( &bo, i_cd_size );
- bo_addle_u16( &bo, 2 * strlen( p_sys->psz_title ) + 2 );
- bo_addle_u16( &bo, 2 * strlen( p_sys->psz_author ) + 2 );
- bo_addle_u16( &bo, 2 * strlen( p_sys->psz_copyright ) + 2 );
- bo_addle_u16( &bo, 2 * strlen( p_sys->psz_comment ) + 2 );
- bo_addle_u16( &bo, 2 * strlen( p_sys->psz_rating ) + 2 );
- bo_addle_str16_nosize( &bo, p_sys->psz_title );
- bo_addle_str16_nosize( &bo, p_sys->psz_author );
- bo_addle_str16_nosize( &bo, p_sys->psz_copyright );
- bo_addle_str16_nosize( &bo, p_sys->psz_comment );
- bo_addle_str16_nosize( &bo, p_sys->psz_rating );
- }
- /* stream properties */
- for( i = 0; i < p_sys->i_track; i++ )
- {
- tk = &p_sys->track[i];
- bo_add_guid ( &bo, &asf_object_stream_properties_guid );
- bo_addle_u64( &bo, 78 + tk->i_extra );
- if( tk->i_cat == AUDIO_ES )
- {
- bo_add_guid( &bo, &asf_object_stream_type_audio );
- bo_add_guid( &bo, &asf_guid_audio_conceal_none );
- }
- else if( tk->i_cat == VIDEO_ES )
- {
- bo_add_guid( &bo, &asf_object_stream_type_video );
- bo_add_guid( &bo, &asf_guid_video_conceal_none );
- }
- bo_addle_u64( &bo, 0 ); /* time offset */
- bo_addle_u32( &bo, tk->i_extra );
- bo_addle_u32( &bo, 0 ); /* 0 */
- bo_addle_u16( &bo, tk->i_id ); /* stream number */
- bo_addle_u32( &bo, 0 );
- bo_add_mem ( &bo, tk->p_extra, tk->i_extra );
- }
- /* Codec Infos */
- bo_add_guid ( &bo, &asf_object_codec_comment_guid );
- bo_addle_u64( &bo, i_ci_size );
- bo_add_guid ( &bo, &asf_object_codec_comment_reserved_guid );
- bo_addle_u32( &bo, p_sys->i_track );
- for( i = 0; i < p_sys->i_track; i++ )
- {
- tk = &p_sys->track[i];
- bo_addle_u16( &bo, tk->i_id );
- bo_addle_str16( &bo, tk->psz_name );
- bo_addle_u16( &bo, 0 );
- if( tk->i_cat == AUDIO_ES )
- {
- bo_addle_u16( &bo, 2 );
- bo_addle_u16( &bo, tk->i_tag );
- }
- else if( tk->i_cat == VIDEO_ES )
- {
- bo_addle_u16( &bo, 4 );
- bo_add_mem ( &bo, (uint8_t*)&tk->i_fourcc, 4 );
- }
- }
- /* data object */
- bo_add_guid ( &bo, &asf_object_data_guid );
- bo_addle_u64( &bo, 50 + p_sys->i_packet_count * p_sys->i_packet_size );
- bo_add_guid ( &bo, &p_sys->fid );
- bo_addle_u64( &bo, p_sys->i_packet_count );
- bo_addle_u16( &bo, 0x101 );
- return out;
- }
- /****************************************************************************
- *
- ****************************************************************************/
- static block_t *asf_packet_flush( sout_mux_t *p_mux )
- {
- sout_mux_sys_t *p_sys = p_mux->p_sys;
- int i_pad, i_preheader = p_sys->b_asf_http ? 12 : 0;
- block_t *pk;
- bo_t bo;
- if( !p_sys->pk ) return 0;
- i_pad = p_sys->i_packet_size - p_sys->i_pk_used;
- memset( p_sys->pk->p_buffer + p_sys->i_pk_used, 0, i_pad );
- bo_init( &bo, p_sys->pk->p_buffer, 14 + i_preheader );
- if( p_sys->b_asf_http )
- asf_chunk_add( &bo, 0x4424, p_sys->i_packet_size, 0x0, p_sys->i_seq++);
- bo_add_u8 ( &bo, 0x82 );
- bo_addle_u16( &bo, 0 );
- bo_add_u8( &bo, 0x11 );
- bo_add_u8( &bo, 0x5d );
- bo_addle_u16( &bo, i_pad );
- bo_addle_u32( &bo, (p_sys->i_pk_dts - p_sys->i_dts_first) / 1000 +
- p_sys->i_preroll_time );
- bo_addle_u16( &bo, 0 /* data->i_length */ );
- bo_add_u8( &bo, 0x80 | p_sys->i_pk_frame );
- pk = p_sys->pk;
- p_sys->pk = NULL;
- p_sys->i_packet_count++;
- return pk;
- }
- static block_t *asf_packet_create( sout_mux_t *p_mux,
- asf_track_t *tk, block_t *data )
- {
- sout_mux_sys_t *p_sys = p_mux->p_sys;
- int i_data = data->i_buffer;
- int i_pos = 0;
- uint8_t *p_data= data->p_buffer;
- block_t *first = NULL, **last = &first;
- int i_preheader = p_sys->b_asf_http ? 12 : 0;
- while( i_pos < i_data )
- {
- bo_t bo;
- int i_payload;
- if( p_sys->pk == NULL )
- {
- p_sys->pk = block_New( p_mux, p_sys->i_packet_size + i_preheader );
- /* reserve 14 bytes for the packet header */
- p_sys->i_pk_used = 14 + i_preheader;
- p_sys->i_pk_frame = 0;
- p_sys->i_pk_dts = data->i_dts;
- }
- bo_init( &bo, &p_sys->pk->p_buffer[p_sys->i_pk_used],
- p_sys->i_packet_size - p_sys->i_pk_used );
- /* add payload (header size = 17) */
- i_payload = __MIN( i_data - i_pos,
- p_sys->i_packet_size - p_sys->i_pk_used - 17 );
- bo_add_u8 ( &bo, !(data->i_flags & BLOCK_FLAG_TYPE_P ||
- data->i_flags & BLOCK_FLAG_TYPE_B) ?
- 0x80 | tk->i_id : tk->i_id );
- bo_add_u8 ( &bo, tk->i_sequence );
- bo_addle_u32( &bo, i_pos );
- bo_add_u8 ( &bo, 0x08 ); /* flags */
- bo_addle_u32( &bo, i_data );
- bo_addle_u32( &bo, (data->i_dts - p_sys->i_dts_first) / 1000 +
- p_sys->i_preroll_time );
- bo_addle_u16( &bo, i_payload );
- bo_add_mem ( &bo, &p_data[i_pos], i_payload );
- i_pos += i_payload;
- p_sys->i_pk_used += 17 + i_payload;
- p_sys->i_pk_frame++;
- if( p_sys->i_pk_used + 17 >= p_sys->i_packet_size )
- {
- /* Not enough data for another payload, flush the packet */
- *last = asf_packet_flush( p_mux );
- last = &(*last)->p_next;
- }
- }
- tk->i_sequence++;
- block_Release( data );
- return first;
- }
- static block_t *asf_stream_end_create( sout_mux_t *p_mux )
- {
- sout_mux_sys_t *p_sys = p_mux->p_sys;
- block_t *out = NULL;
- bo_t bo;
- if( p_sys->b_asf_http )
- {
- out = block_New( p_mux, 12 );
- bo_init( &bo, out->p_buffer, 12 );
- asf_chunk_add( &bo, 0x4524, 0, 0x00, p_sys->i_seq++ );
- }
- else
- {
- /* Create index */
- out = block_New( p_mux, 56 );
- bo_init( &bo, out->p_buffer, 56 );
- bo_add_guid ( &bo, &asf_object_index_guid );
- bo_addle_u64( &bo, 56 );
- bo_add_guid ( &bo, &p_sys->fid );
- bo_addle_u64( &bo, 10000000 );
- bo_addle_u32( &bo, 5 );
- bo_addle_u32( &bo, 0 );
- }
- return out;
- }