/***************************************************************************** * asf.c: asf muxer module for vlc ***************************************************************************** * Copyright (C) 2003-2004, 2006 VLC authors and VideoLAN * * Authors: Laurent Aimar * Gildas Bazin * * 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 *****************************************************************************/ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include #include #include #include #include #include #include #include #include "../demux/asf/libasf_guid.h" #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_("Title to put in ASF comments." ) #define AUTHOR_TEXT N_("Author") #define AUTHOR_LONGTEXT N_("Author to put in ASF comments." ) #define COPYRIGHT_TEXT N_("Copyright") #define COPYRIGHT_LONGTEXT N_("Copyright string to put in ASF comments." ) #define COMMENT_TEXT N_("Comment") #define COMMENT_LONGTEXT N_("Comment to put in ASF comments." ) #define RATING_TEXT N_("Rating") #define RATING_LONGTEXT N_("\"Rating\" to put in ASF comments." ) #define PACKETSIZE_TEXT N_("Packet Size") #define PACKETSIZE_LONGTEXT N_("ASF packet size -- default is 4096 bytes") #define BITRATE_TEXT N_("Bitrate override") #define BITRATE_LONGTEXT N_("Do not try to guess ASF bitrate. Setting this, allows you to control how Windows Media Player will cache streamed content. Set to audio+video bitrate in bytes") vlc_module_begin () set_description( N_("ASF muxer") ) set_subcategory( SUBCAT_SOUT_MUX ) set_shortname( "ASF" ) set_capability( "sout mux", 5 ) add_shortcut( "asf", "asfh" ) set_callbacks( Open, Close ) add_string( SOUT_CFG_PREFIX "title", "", TITLE_TEXT, TITLE_LONGTEXT ) add_string( SOUT_CFG_PREFIX "author", "", AUTHOR_TEXT, AUTHOR_LONGTEXT ) add_string( SOUT_CFG_PREFIX "copyright","", COPYRIGHT_TEXT, COPYRIGHT_LONGTEXT ) add_string( SOUT_CFG_PREFIX "comment", "", COMMENT_TEXT, COMMENT_LONGTEXT ) add_string( SOUT_CFG_PREFIX "rating", "", RATING_TEXT, RATING_LONGTEXT ) add_integer( SOUT_CFG_PREFIX "packet-size", 4096, PACKETSIZE_TEXT, PACKETSIZE_LONGTEXT ) add_integer( SOUT_CFG_PREFIX "bitrate-override", 0, BITRATE_TEXT, BITRATE_LONGTEXT ) vlc_module_end () /***************************************************************************** * Locales prototypes *****************************************************************************/ static const char *const 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 void DelStream( sout_mux_t *, sout_input_t * ); static int Mux ( sout_mux_t * ); typedef struct { int i_id; enum es_format_category_e i_cat; /* codec information */ uint16_t i_tag; /* for audio */ vlc_fourcc_t i_fourcc; /* for video */ const char *psz_name; /* codec name */ int i_blockalign; /* for audio only */ bool b_audio_correction; int i_sequence; int i_extra; uint8_t *p_extra; bool b_extended; es_format_t fmt; } asf_track_t; typedef struct { vlc_guid_t fid; /* file id */ int i_packet_size; int64_t i_packet_count; vlc_tick_t i_dts_first; vlc_tick_t i_dts_last; int64_t i_preroll_time; /* in milliseconds */ int64_t i_bitrate; int64_t i_bitrate_override; vlc_array_t tracks; bool b_write_header; block_t *pk; int i_pk_used; int i_pk_frame; vlc_tick_t i_pk_dts; bool b_asf_http; int i_seq; /* meta data */ char *psz_title; char *psz_author; char *psz_copyright; char *psz_comment; char *psz_rating; } sout_mux_sys_t; static block_t *asf_header_create( sout_mux_t *, bool ); 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 *, const 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; msg_Dbg( p_mux, "asf muxer opened" ); config_ChainParse( 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 ) ); if( !p_sys ) return VLC_ENOMEM; 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 = p_sys->i_dts_last = VLC_TICK_INVALID; p_sys->i_preroll_time = 2000; p_sys->i_bitrate = 0; p_sys->i_bitrate_override = 0; p_sys->i_seq = 0; vlc_array_init( &p_sys->tracks ); p_sys->b_write_header = true; p_sys->i_packet_size = var_InheritInteger( p_mux, "sout-asf-packet-size" ); p_sys->i_bitrate_override = var_InheritInteger( p_mux, "sout-asf-bitrate-override" ); msg_Dbg( p_mux, "Packet size %d", p_sys->i_packet_size); if (p_sys->i_bitrate_override) msg_Dbg( p_mux, "Bitrate override %"PRId64, p_sys->i_bitrate_override); p_sys->i_packet_count= 0; /* Generate a random fid */ p_sys->fid.Data1 = 0xbabac001; vlc_rand_bytes(&p_sys->fid.Data2, sizeof(p_sys->fid.Data2)); vlc_rand_bytes(&p_sys->fid.Data3, sizeof(p_sys->fid.Data3)); vlc_rand_bytes(p_sys->fid.Data4, sizeof(p_sys->fid.Data4)); /* Meta data */ p_sys->psz_title = var_GetString( p_mux, SOUT_CFG_PREFIX "title" ); p_sys->psz_author = var_GetString( p_mux, SOUT_CFG_PREFIX "author" ); p_sys->psz_copyright = var_GetString( p_mux, SOUT_CFG_PREFIX "copyright" ); p_sys->psz_comment = var_GetString( p_mux, SOUT_CFG_PREFIX "comment" ); p_sys->psz_rating = var_GetString( p_mux, SOUT_CFG_PREFIX "rating" ); 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; 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 ) == VLC_SUCCESS ) { out = asf_header_create( p_mux, false ); sout_AccessOutWrite( p_mux->p_access, out ); } for( size_t i = 0; i < vlc_array_count( &p_sys->tracks ); i++ ) { asf_track_t *track = vlc_array_item_at_index( &p_sys->tracks, i ); free( track->p_extra ); es_format_Clean( &track->fmt ); free( track ); } vlc_array_clear( &p_sys->tracks ); free( p_sys->psz_title ); free( p_sys->psz_author ); free( p_sys->psz_copyright ); free( p_sys->psz_comment ); free( p_sys->psz_rating ); 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; bool *pb_bool; char **ppsz; switch( i_query ) { case MUX_CAN_ADD_STREAM_WHILE_MUXING: pb_bool = va_arg( args, bool * ); *pb_bool = false; return VLC_SUCCESS; case MUX_GET_MIME: ppsz = 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( vlc_array_count( &p_sys->tracks ) >= MAX_ASF_TRACKS ) { msg_Dbg( p_mux, "cannot add this track (too much tracks)" ); return VLC_EGENERIC; } tk = p_input->p_sys = malloc( sizeof( asf_track_t ) ); if( unlikely(p_input->p_sys == NULL) ) return VLC_ENOMEM; memset( tk, 0, sizeof( *tk ) ); tk->i_cat = p_input->p_fmt->i_cat; tk->i_sequence = 0; tk->b_audio_correction = 0; tk->b_extended = false; switch( tk->i_cat ) { case AUDIO_ES: { int i_blockalign = p_input->p_fmt->audio.i_blockalign; int i_bitspersample = p_input->p_fmt->audio.i_bitspersample; int i_extra = 0; switch( p_input->p_fmt->i_codec ) { case VLC_CODEC_A52: tk->i_tag = WAVE_FORMAT_A52; tk->psz_name = "A/52"; i_bitspersample = 0; break; case VLC_CODEC_MP4A: tk->i_tag = WAVE_FORMAT_AAC; tk->psz_name = "MPEG-4 Audio"; i_bitspersample = 0; break; case VLC_CODEC_MP3: tk->psz_name = "MPEG Audio Layer 3"; tk->i_tag = WAVE_FORMAT_MPEGLAYER3; i_bitspersample = 0; i_blockalign = 1; i_extra = 12; break; case VLC_CODEC_MPGA: tk->psz_name = "MPEG Audio Layer 1/2"; tk->i_tag = WAVE_FORMAT_MPEG; i_bitspersample = 0; i_blockalign = 1; i_extra = 22; break; case VLC_CODEC_WMA1: tk->psz_name = "Windows Media Audio v1"; tk->i_tag = WAVE_FORMAT_WMA1; tk->b_audio_correction = true; break; case VLC_CODEC_WMA2: tk->psz_name= "Windows Media Audio (v2) 7, 8 and 9 Series"; tk->i_tag = WAVE_FORMAT_WMA2; tk->b_audio_correction = true; break; case VLC_CODEC_WMAP: tk->psz_name = "Windows Media Audio 9 Professional"; tk->i_tag = WAVE_FORMAT_WMAP; tk->b_audio_correction = true; break; case VLC_CODEC_WMAL: tk->psz_name = "Windows Media Audio 9 Lossless"; tk->i_tag = WAVE_FORMAT_WMAL; tk->b_audio_correction = true; break; /* raw codec */ case VLC_CODEC_U8: 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_CODEC_S16L: 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_CODEC_S24L: 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_CODEC_S32L: 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 ); if( !tk->p_extra ) return VLC_ENOMEM; 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 ); tk->i_blockalign = 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 += 128000; } if (p_sys->i_bitrate_override) p_sys->i_bitrate = p_sys->i_bitrate_override; break; } case VIDEO_ES: { const es_format_t *p_fmt = p_input->p_fmt; uint8_t *p_codec_extra = NULL; int i_codec_extra = 0; if( p_fmt->i_codec == VLC_CODEC_MP4V ) { tk->psz_name = "MPEG-4 Video"; tk->i_fourcc = VLC_FOURCC( 'M', 'P', '4', 'S' ); } else if( p_fmt->i_codec == VLC_CODEC_DIV3 ) { tk->psz_name = "MSMPEG-4 V3 Video"; tk->i_fourcc = VLC_FOURCC( 'M', 'P', '4', '3' ); } else if( p_fmt->i_codec == VLC_CODEC_DIV2 ) { tk->psz_name = "MSMPEG-4 V2 Video"; tk->i_fourcc = VLC_FOURCC( 'M', 'P', '4', '2' ); } else if( p_fmt->i_codec == VLC_CODEC_DIV1 ) { tk->psz_name = "MSMPEG-4 V1 Video"; tk->i_fourcc = VLC_FOURCC( 'M', 'P', 'G', '4' ); } else if( p_fmt->i_codec == VLC_CODEC_WMV1 ) { tk->psz_name = "Windows Media Video 7"; tk->i_fourcc = VLC_FOURCC( 'W', 'M', 'V', '1' ); } else if( p_fmt->i_codec == VLC_CODEC_WMV2 ) { tk->psz_name = "Windows Media Video 8"; tk->i_fourcc = VLC_FOURCC( 'W', 'M', 'V', '2' ); } else if( p_fmt->i_codec == VLC_CODEC_WMV3 ) { tk->psz_name = "Windows Media Video 9"; tk->i_fourcc = VLC_FOURCC( 'W', 'M', 'V', '3' ); tk->b_extended = true; } else if( p_fmt->i_codec == VLC_CODEC_VC1 ) { tk->psz_name = "Windows Media Video 9 Advanced Profile"; tk->i_fourcc = VLC_FOURCC( 'W', 'V', 'C', '1' ); tk->b_extended = true; if( p_fmt->i_extra > 0 ) { p_codec_extra = malloc( 1 + p_fmt->i_extra ); if( p_codec_extra ) { i_codec_extra = 1 + p_fmt->i_extra; p_codec_extra[0] = 0x01; memcpy( &p_codec_extra[1], p_fmt->p_extra, p_fmt->i_extra ); } } } else if( p_fmt->i_codec == VLC_CODEC_H264 ) { tk->psz_name = "H.264/MPEG-4 AVC"; tk->i_fourcc = VLC_FOURCC('h','2','6','4'); } else { tk->psz_name = _("Unknown Video"); tk->i_fourcc = p_fmt->i_original_fourcc ? p_fmt->i_original_fourcc : p_fmt->i_codec; } if( !i_codec_extra && p_fmt->i_extra > 0 ) { p_codec_extra = malloc( p_fmt->i_extra ); if( p_codec_extra ) { i_codec_extra = p_fmt->i_extra; memcpy( p_codec_extra, p_fmt->p_extra, p_fmt->i_extra ); } } tk->i_extra = 11 + sizeof( VLC_BITMAPINFOHEADER ) + i_codec_extra; tk->p_extra = malloc( tk->i_extra ); if( !tk->p_extra ) { free( p_codec_extra ); return VLC_ENOMEM; } bo_init( &bo, tk->p_extra, tk->i_extra ); bo_addle_u32( &bo, p_fmt->video.i_width ); bo_addle_u32( &bo, p_fmt->video.i_height ); bo_add_u8 ( &bo, 0x02 ); /* flags */ bo_addle_u16( &bo, sizeof( VLC_BITMAPINFOHEADER ) + i_codec_extra ); bo_addle_u32( &bo, sizeof( VLC_BITMAPINFOHEADER ) + i_codec_extra ); bo_addle_u32( &bo, p_fmt->video.i_width ); bo_addle_u32( &bo, p_fmt->video.i_height ); bo_addle_u16( &bo, 1 ); bo_addle_u16( &bo, 24 ); 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( i_codec_extra > 0 ) { bo_add_mem( &bo, p_codec_extra, i_codec_extra ); free( p_codec_extra ); } if( p_fmt->i_bitrate > 50000 ) { p_sys->i_bitrate += p_fmt->i_bitrate; } else { p_sys->i_bitrate += 512000; } if( p_sys->i_bitrate_override ) p_sys->i_bitrate = p_sys->i_bitrate_override; break; } default: msg_Err(p_mux, "unhandled track type" ); free( tk ); return VLC_EGENERIC; } if( vlc_array_append( &p_sys->tracks, tk ) ) { free( tk->p_extra ); free( tk ); return VLC_EGENERIC; } es_format_Copy( &tk->fmt, p_input->p_fmt ); tk->i_id = vlc_array_index_of_item( &p_sys->tracks, tk ) + 1; if( p_sys->b_asf_http ) p_sys->b_write_header = true; return VLC_SUCCESS; } /***************************************************************************** * DelStream: *****************************************************************************/ static void DelStream( sout_mux_t *p_mux, sout_input_t *p_input ) { /* if bitrate ain't defined in commandline, reduce it when tracks are deleted */ sout_mux_sys_t *p_sys = p_mux->p_sys; asf_track_t *tk = p_input->p_sys; msg_Dbg( p_mux, "removing input" ); if(!p_sys->i_bitrate_override) { if( tk->i_cat == AUDIO_ES ) { if( p_input->p_fmt->i_bitrate > 24000 ) p_sys->i_bitrate -= p_input->p_fmt->i_bitrate; else p_sys->i_bitrate -= 128000; } else if(tk->i_cat == VIDEO_ES ) { if( p_input->p_fmt->i_bitrate > 50000 ) p_sys->i_bitrate -= p_input->p_fmt->i_bitrate; else p_sys->i_bitrate -= 512000; } } if( p_sys->b_asf_http ) { vlc_array_remove( &p_sys->tracks, vlc_array_index_of_item( &p_sys->tracks, tk ) ); p_sys->b_write_header = true; } } /***************************************************************************** * 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, true ); out->i_flags |= BLOCK_FLAG_HEADER; sout_AccessOutWrite( p_mux->p_access, out ); p_sys->b_write_header = false; } for( ;; ) { sout_input_t *p_input; asf_track_t *tk; vlc_tick_t i_dts; block_t *data; block_t *pk; int i_stream = sout_MuxGetStream( p_mux, 1, &i_dts ); if( i_stream < 0 ) { /* not enough data */ return VLC_SUCCESS; } if( p_sys->i_dts_first == VLC_TICK_INVALID ) { 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 ); /* Convert VC1 to ASF special format */ if( tk->i_fourcc == VLC_FOURCC( 'W', 'V', 'C', '1' ) ) { while( data->i_buffer >= 4 && ( data->p_buffer[0] != 0x00 || data->p_buffer[1] != 0x00 || data->p_buffer[2] != 0x01 || ( data->p_buffer[3] != 0x0D && data->p_buffer[3] != 0x0C ) ) ) { data->i_buffer--; data->p_buffer++; } if( data->i_buffer >= 4 ) { data->i_buffer -= 4; data->p_buffer += 4; } } if( ( pk = asf_packet_create( p_mux, tk, data ) ) ) { sout_AccessOutWrite( p_mux->p_access, pk ); } } 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, const char *str ) { bo_addle_u16( bo, strlen( str ) + 1 ); for( ;; ) { uint16_t c = (uint8_t)*str++; bo_addle_u16( bo, c ); if( c == '\0' ) break; } } static void bo_addle_str16_nosize( bo_t *bo, const char *str ) { for( ;; ) { uint16_t c = (uint8_t)*str++; bo_addle_u16( bo, c ); if( c == '\0' ) break; } } /**************************************************************************** * GUID definitions ****************************************************************************/ static void bo_add_guid( bo_t *p_bo, const vlc_guid_t *id ) { bo_addle_u32( p_bo, id->Data1 ); bo_addle_u16( p_bo, id->Data2 ); bo_addle_u16( p_bo, id->Data3 ); for( int i = 0; i < 8; i++ ) { bo_add_u8( p_bo, id->Data4[i] ); } } /**************************************************************************** * 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, bool b_broadcast ) { sout_mux_sys_t *p_sys = p_mux->p_sys; vlc_tick_t i_duration = 0; int i_size, i_header_ext_size; 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 != VLC_TICK_INVALID && p_sys->i_dts_last > p_sys->i_dts_first ) { i_duration = p_sys->i_dts_last - p_sys->i_dts_first; } /* calculate header size */ i_size = 30 + 104; i_ci_size = 44; for( size_t i = 0; i < vlc_array_count( &p_sys->tracks ); i++ ) { asf_track_t *tk = vlc_array_item_at_index( &p_sys->tracks, i ); /* update also track-id */ tk->i_id = i + 1; i_size += 78 + tk->i_extra; i_ci_size += 8 + 2 * strlen( tk->psz_name ); if( tk->i_cat == AUDIO_ES ) i_ci_size += 4; else if( tk->i_cat == VIDEO_ES ) i_ci_size += 6; /* Error correction data field */ if( tk->b_audio_correction ) i_size += 8; } /* 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 ); } i_header_ext_size = 46; /* size of the metadata object */ for( size_t i = 0; i < vlc_array_count( &p_sys->tracks ); i++ ) { const asf_track_t *p_track = vlc_array_item_at_index( &p_sys->tracks, i ); if( p_track->i_cat == VIDEO_ES && p_track->fmt.video.i_sar_num != 0 && p_track->fmt.video.i_sar_den != 0 ) { i_cm_size = 26 + 2 * (16 + 2 * sizeof("AspectRatio?")); } if( p_track->b_extended ) i_header_ext_size += 88; } i_header_ext_size += i_cm_size; i_size += i_ci_size + i_cd_size + i_header_ext_size ; if( p_sys->b_asf_http ) { out = block_Alloc( 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_Alloc( 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 + vlc_array_count( &p_sys->tracks ) + 1 + (i_cd_size ? 1 : 0) + (i_cm_size ? 1 : 0) ); 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, MSFTIME_FROM_VLC_TICK(i_duration) ); /* play duration (100ns) */ bo_addle_u64( &bo, MSFTIME_FROM_VLC_TICK(i_duration) ); /* send duration (100ns) */ bo_addle_u64( &bo, p_sys->i_preroll_time ); /* preroll duration (ms) */ bo_addle_u32( &bo, b_broadcast ? 0x01 : 0x02 /* seekable */ ); /* 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 */ /* NOTE: According to p6-9 of the ASF specification the bitrate cannot be 0, * therefore apply this workaround to make sure it is not 0. If the bitrate is * 0 the file will play in WMP11, but not in Sliverlight and WMP12 */ bo_addle_u32( &bo, p_sys->i_bitrate > 0 ? p_sys->i_bitrate : 1 ); /* maxbitrate */ /* header extension */ bo_add_guid ( &bo, &asf_object_header_extension_guid ); bo_addle_u64( &bo, i_header_ext_size ); bo_add_guid ( &bo, &asf_guid_reserved_1 ); bo_addle_u16( &bo, 6 ); bo_addle_u32( &bo, i_header_ext_size - 46 ); /* extended stream properties */ for( size_t i = 0; i < vlc_array_count( &p_sys->tracks ); i++ ) { const asf_track_t *p_track = vlc_array_item_at_index( &p_sys->tracks, i ); const es_format_t *p_fmt = &p_track->fmt; if( !p_track->b_extended ) continue; uint64_t i_avg_duration = 0; if( p_fmt->i_cat == VIDEO_ES && p_fmt->video.i_frame_rate > 0 && p_fmt->video.i_frame_rate_base > 0 ) i_avg_duration = ( INT64_C(10000000) * p_fmt->video.i_frame_rate_base + p_fmt->video.i_frame_rate/2 ) / p_fmt->video.i_frame_rate; bo_add_guid ( &bo, &asf_object_extended_stream_properties_guid ); bo_addle_u64( &bo, 88 ); bo_addle_u64( &bo, 0 ); bo_addle_u64( &bo, 0 ); bo_addle_u32( &bo, p_fmt->i_bitrate ); /* Bitrate */ bo_addle_u32( &bo, p_sys->i_preroll_time ); /* Buffer size */ bo_addle_u32( &bo, 0 ); /* Initial buffer fullness */ bo_addle_u32( &bo, p_fmt->i_bitrate ); /* Alternate Bitrate */ bo_addle_u32( &bo, 0 ); /* Alternate Buffer size */ bo_addle_u32( &bo, 0 ); /* Alternate Initial buffer fullness */ bo_addle_u32( &bo, 0 ); /* Maximum object size (0 = unknown) */ bo_addle_u32( &bo, 0x02 ); /* Flags (seekable) */ bo_addle_u16( &bo, p_track->i_id ); /* Stream number */ bo_addle_u16( &bo, 0 ); /* Stream language index */ bo_addle_u64( &bo, i_avg_duration ); /* Average time per frame */ bo_addle_u16( &bo, 0 ); /* Stream name count */ bo_addle_u16( &bo, 0 ); /* Payload extension system count */ } /* metadata object (part of header extension) */ if( i_cm_size ) { unsigned int i_dst_num, i_dst_den; asf_track_t *tk = NULL; for( size_t i = 0; i < vlc_array_count( &p_sys->tracks ); i++ ) { tk = vlc_array_item_at_index( &p_sys->tracks, i ); if( tk->i_cat == VIDEO_ES && tk->fmt.video.i_sar_num != 0 && tk->fmt.video.i_sar_den != 0 ) { vlc_ureduce( &i_dst_num, &i_dst_den, tk->fmt.video.i_sar_num, tk->fmt.video.i_sar_den, 0 ); break; } } assert( tk != NULL ); 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, tk->i_id ); /* 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, tk->i_id ); /* 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( size_t i = 0; i < vlc_array_count( &p_sys->tracks ); i++ ) { asf_track_t *tk = vlc_array_item_at_index( &p_sys->tracks, i); bo_add_guid ( &bo, &asf_object_stream_properties_guid ); bo_addle_u64( &bo, 78 + tk->i_extra + (tk->b_audio_correction ? 8:0) ); if( tk->i_cat == AUDIO_ES ) { bo_add_guid( &bo, &asf_object_stream_type_audio ); if( tk->b_audio_correction ) bo_add_guid( &bo, &asf_guid_audio_conceal_spread ); else bo_add_guid( &bo, &asf_no_error_correction_guid ); } else if( tk->i_cat == VIDEO_ES ) { bo_add_guid( &bo, &asf_object_stream_type_video ); bo_add_guid( &bo, &asf_no_error_correction_guid ); } bo_addle_u64( &bo, 0 ); /* time offset */ bo_addle_u32( &bo, tk->i_extra ); /* correction data length */ bo_addle_u32( &bo, tk->b_audio_correction ? 8 : 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 ); /* Error correction data field */ if( tk->b_audio_correction ) { bo_add_u8( &bo, 0x1 ); /* span */ bo_addle_u16( &bo, tk->i_blockalign ); /* virtual packet length */ bo_addle_u16( &bo, tk->i_blockalign ); /* virtual chunk length */ bo_addle_u16( &bo, 1 ); /* silence length */ bo_add_u8( &bo, 0x0 ); /* data */ } } /* Codec Infos */ bo_add_guid ( &bo, &asf_object_codec_list_guid ); bo_addle_u64( &bo, i_ci_size ); bo_add_guid ( &bo, &asf_guid_reserved_2 ); bo_addle_u32( &bo, vlc_array_count( &p_sys->tracks ) ); for( size_t i = 0; i < vlc_array_count( &p_sys->tracks ); i++ ) { asf_track_t *tk = vlc_array_item_at_index( &p_sys->tracks ,i); if( tk->i_cat == VIDEO_ES ) bo_addle_u16( &bo, 1 /* video */ ); else if( tk->i_cat == AUDIO_ES ) bo_addle_u16( &bo, 2 /* audio */ ); else bo_addle_u16( &bo, 0xFFFF /* unknown */ ); 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, MS_FROM_VLC_TICK(p_sys->i_pk_dts - p_sys->i_dts_first) + 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_Alloc( 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 ); if( tk->b_audio_correction && p_sys->i_pk_frame && i_payload < i_data ) { /* Don't know why yet but WMP doesn't like split WMA packets */ *last = asf_packet_flush( p_mux ); last = &(*last)->p_next; continue; } 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, MS_FROM_VLC_TICK(data->i_dts - p_sys->i_dts_first) + 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_Alloc( 12 ); bo_init( &bo, out->p_buffer, 12 ); asf_chunk_add( &bo, 0x4524, 0, 0x00, p_sys->i_seq++ ); } else { /* Create index */ out = block_Alloc( 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; }