/***************************************************************************** * libasf.h : ***************************************************************************** * Copyright © 2001-2004, 2011 VLC authors and VideoLAN * * Authors: Laurent Aimar * * 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. *****************************************************************************/ #ifndef VLC_ASF_LIBASF_H_ #define VLC_ASF_LIBASF_H_ #define ASF_MAX_STREAMNUMBER 127 #define ASF_OBJECT_COMMON_SIZE 24 /***************************************************************************** * Structure needed for decoder *****************************************************************************/ #include "libasf_guid.h" #define ASF_OBJECT_COMMON \ int i_type; \ guid_t i_object_id; \ uint64_t i_object_size; \ uint64_t i_object_pos; \ union asf_object_u *p_father; \ union asf_object_u *p_first; \ union asf_object_u *p_last; \ union asf_object_u *p_next; typedef struct { ASF_OBJECT_COMMON } asf_object_common_t; typedef struct { uint32_t i_packet_number; uint16_t i_packet_count; } asf_index_entry_t; /**************************************************************************** * High level asf object ****************************************************************************/ /* This is the first header found in an asf file * It's the only object that has subobjects */ typedef struct { ASF_OBJECT_COMMON uint32_t i_sub_object_count; uint8_t i_reserved1; /* 0x01, but could be safely ignored */ uint8_t i_reserved2; /* 0x02, if not must failed to source the contain */ } asf_object_header_t; typedef struct { ASF_OBJECT_COMMON guid_t i_file_id; uint64_t i_total_data_packets; uint16_t i_reserved; } asf_object_data_t; typedef struct { ASF_OBJECT_COMMON guid_t i_file_id; uint64_t i_index_entry_time_interval; uint32_t i_max_packet_count; uint32_t i_index_entry_count; asf_index_entry_t *index_entry; } asf_object_index_t; /**************************************************************************** * Sub level asf object ****************************************************************************/ #define ASF_FILE_PROPERTIES_BROADCAST 0x01 #define ASF_FILE_PROPERTIES_SEEKABLE 0x02 typedef struct { ASF_OBJECT_COMMON guid_t i_file_id; uint64_t i_file_size; uint64_t i_creation_date; uint64_t i_data_packets_count; uint64_t i_play_duration; uint64_t i_send_duration; vlc_tick_t i_preroll; uint32_t i_flags; uint32_t i_min_data_packet_size; uint32_t i_max_data_packet_size; uint32_t i_max_bitrate; } asf_object_file_properties_t; #define ASF_STREAM_PROPERTIES_ENCRYPTED 0x8000 typedef struct { ASF_OBJECT_COMMON guid_t i_stream_type; guid_t i_error_correction_type; uint64_t i_time_offset; uint32_t i_type_specific_data_length; uint32_t i_error_correction_data_length; uint16_t i_flags; /* extracted from flags */ uint8_t i_stream_number; uint32_t i_reserved; uint8_t *p_type_specific_data; uint8_t *p_error_correction_data; } asf_object_stream_properties_t; typedef struct { ASF_OBJECT_COMMON guid_t i_reserved1; uint16_t i_reserved2; uint32_t i_header_extension_size; uint8_t *p_header_extension_data; } asf_object_header_extension_t; enum { ASF_METADATA_TYPE_STRING, ASF_METADATA_TYPE_BYTE, ASF_METADATA_TYPE_BOOL, ASF_METADATA_TYPE_DWORD, ASF_METADATA_TYPE_QWORD, ASF_METADATA_TYPE_WORD, }; typedef struct { uint16_t i_stream; uint16_t i_type; char *psz_name; uint64_t i_val; uint16_t i_data; uint8_t *p_data; } asf_metadata_record_t; typedef struct { ASF_OBJECT_COMMON uint32_t i_record_entries_count; asf_metadata_record_t *record; } asf_object_metadata_t; typedef struct { ASF_OBJECT_COMMON char *psz_title; char *psz_artist; char *psz_copyright; char *psz_description; char *psz_rating; } asf_object_content_description_t; #define ASF_CODEC_TYPE_VIDEO 0x0001 #define ASF_CODEC_TYPE_AUDIO 0x0002 #define ASF_CODEC_TYPE_UNKNOWN 0xffff typedef struct asf_codec_entry { uint16_t i_type; char *psz_name; char *psz_description; uint16_t i_information_length; uint8_t *p_information; struct asf_codec_entry *p_next; } asf_codec_entry_t; typedef struct { ASF_OBJECT_COMMON guid_t i_reserved; asf_codec_entry_t *codecs; } asf_object_codec_list_t; typedef struct { uint64_t i_offset; uint64_t i_presentation_time; uint16_t i_entry_length; uint32_t i_send_time; uint32_t i_flags; uint32_t i_marker_description_length; char *p_marker_description; } asf_marker_t; typedef struct { ASF_OBJECT_COMMON guid_t i_reserved1; uint32_t i_count; uint16_t i_reserved2; char *name; asf_marker_t *marker; } asf_object_marker_t; typedef struct { ASF_OBJECT_COMMON uint16_t i_language; char **ppsz_language; } asf_object_language_list_t; typedef struct { ASF_OBJECT_COMMON uint16_t i_bitrate; struct { uint8_t i_stream_number; uint32_t i_avg_bitrate; } bitrate[ASF_MAX_STREAMNUMBER + 1]; } asf_object_stream_bitrate_properties_t; typedef struct { guid_t i_extension_id; uint16_t i_data_size; uint32_t i_info_length; char *pi_info; } asf_payload_extension_system_t; #define ASF_EXTENSION_VIDEOFRAME_NEWFRAME 0x08 #define ASF_EXTENSION_VIDEOFRAME_IFRAME 0x01 #define ASF_EXTENSION_VIDEOFRAME_TYPE_MASK 0x07 typedef struct { ASF_OBJECT_COMMON uint64_t i_start_time; uint64_t i_end_time; uint32_t i_data_bitrate; uint32_t i_buffer_size; uint32_t i_initial_buffer_fullness; uint32_t i_alternate_data_bitrate; uint32_t i_alternate_buffer_size; uint32_t i_alternate_initial_buffer_fullness; uint32_t i_maximum_object_size; uint32_t i_flags; uint16_t i_stream_number; uint16_t i_language_index; uint64_t i_average_time_per_frame; uint16_t i_stream_name_count; uint16_t i_payload_extension_system_count; asf_payload_extension_system_t *p_ext; uint16_t *pi_stream_name_language; char **ppsz_stream_name; asf_object_stream_properties_t *p_sp; } asf_object_extended_stream_properties_t; #define ASF_MAX_EXCLUSION_TYPE 2 typedef enum { LANGUAGE = ASF_MAX_EXCLUSION_TYPE, BITRATE = 1, UNKNOWN = 0 } asf_exclusion_type_t; typedef struct { ASF_OBJECT_COMMON asf_exclusion_type_t exclusion_type; uint16_t i_stream_number_count; uint16_t *pi_stream_number; } asf_object_advanced_mutual_exclusion_t; typedef struct { ASF_OBJECT_COMMON uint16_t i_priority_count; uint16_t *pi_priority_flag; uint16_t *pi_priority_stream_number; } asf_object_stream_prioritization_t; typedef struct { ASF_OBJECT_COMMON asf_exclusion_type_t exclusion_type; uint16_t i_stream_number_count; uint16_t *pi_stream_numbers; } asf_object_bitrate_mutual_exclusion_t; typedef struct { ASF_OBJECT_COMMON uint16_t i_count; char **ppsz_name; char **ppsz_value; } asf_object_extended_content_description_t; /**************************************************************************** * Special Root Object ****************************************************************************/ typedef struct { ASF_OBJECT_COMMON asf_object_header_t *p_hdr; asf_object_data_t *p_data; /* could be NULL if !b_seekable or not-present */ asf_object_index_t *p_index; /* from asf_object_header_t */ asf_object_file_properties_t *p_fp; /* from asf_object_header_extension_t */ asf_object_metadata_t *p_metadata; } asf_object_root_t; /**************************************************************************** * asf_object_t: union of all objects. ****************************************************************************/ typedef union asf_object_u { asf_object_common_t common; asf_object_header_t header; asf_object_data_t data; asf_object_index_t index; asf_object_root_t root; asf_object_file_properties_t file_properties; asf_object_stream_properties_t stream_properties; asf_object_header_extension_t header_extension; asf_object_metadata_t metadata; asf_object_codec_list_t codec_list; asf_object_marker_t marker; asf_object_language_list_t language_list; asf_object_stream_bitrate_properties_t stream_bitrate; asf_object_extended_stream_properties_t ext_stream; asf_object_content_description_t content_description; asf_object_advanced_mutual_exclusion_t advanced_mutual_exclusion; asf_object_stream_prioritization_t stream_prioritization; asf_object_bitrate_mutual_exclusion_t bitrate_mutual_exclusion; asf_object_extended_content_description_t extended_content_description; } asf_object_t; asf_object_root_t *ASF_ReadObjectRoot( stream_t *, int b_seekable ); void ASF_FreeObjectRoot( stream_t *, asf_object_root_t *p_root ); int ASF_CountObject ( void *p_obj, const guid_t *p_guid ); void *ASF_FindObject( void *p_obj, const guid_t *p_guid, int i_number ); #endif