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#ifndef __ASF_H
#define __ASF_H
//#include "config.h" /* for WORDS_BIGENDIAN */
#include <inttypes.h>
#include "bswap.h"
#ifndef MIN
#define MIN(a,b) ((a<b)?a:b)
#endif
///////////////////////
// MS GUID definition
///////////////////////
#ifndef GUID_DEFINED
#define GUID_DEFINED
// Size of GUID is 16 bytes!
typedef struct __attribute__((packed)) {
uint32_t Data1; // 4 bytes
uint16_t Data2; // 2 bytes
uint16_t Data3; // 2 bytes
uint8_t Data4[8]; // 8 bytes
} GUID_t;
#endif
///////////////////////
// ASF Object Header
///////////////////////
typedef struct __attribute__((packed)) {
uint8_t guid[16];
uint64_t size;
} ASF_obj_header_t;
////////////////
// ASF Header
////////////////
typedef struct __attribute__((packed)) {
ASF_obj_header_t objh;
uint32_t cno; // number of subchunks
uint8_t v1; // unknown (0x01)
uint8_t v2; // unknown (0x02)
} ASF_header_t;
/////////////////////
// ASF File Header
/////////////////////
typedef struct __attribute__((packed)) {
uint8_t stream_id[16]; // stream GUID
uint64_t file_size;
uint64_t creation_time; //File creation time FILETIME 8
uint64_t num_packets; //Number of packets UINT64 8
uint64_t play_duration; //Timestamp of the end position UINT64 8
uint64_t send_duration; //Duration of the playback UINT64 8
uint64_t preroll; //Time to bufferize before playing UINT32 4
uint32_t flags; //Unknown, maybe flags ( usually contains 2 ) UINT32 4
uint32_t min_packet_size; //Min size of the packet, in bytes UINT32 4
uint32_t max_packet_size; //Max size of the packet UINT32 4
uint32_t max_bitrate; //Maximum bitrate of the media (sum of all the stream)
} ASF_file_header_t;
///////////////////////
// ASF Stream Header
///////////////////////
typedef struct __attribute__((packed)) {
uint8_t type[16]; // Stream type (audio/video) GUID 16
uint8_t concealment[16]; // Audio error concealment type GUID 16
uint64_t unk1; // Unknown, maybe reserved ( usually contains 0 ) UINT64 8
uint32_t type_size; //Total size of type-specific data UINT32 4
uint32_t stream_size; //Size of stream-specific data UINT32 4
uint16_t stream_no; //Stream number UINT16 2
uint32_t unk2; //Unknown UINT32 4
} ASF_stream_header_t;
///////////////////////////
// ASF Content Description
///////////////////////////
typedef struct __attribute__((packed)) {
uint16_t title_size;
uint16_t author_size;
uint16_t copyright_size;
uint16_t comment_size;
uint16_t rating_size;
} ASF_content_description_t;
////////////////////////
// ASF Segment Header
////////////////////////
typedef struct __attribute__((packed)) {
uint8_t streamno;
uint8_t seq;
uint32_t x;
uint8_t flag;
} ASF_segmhdr_t;
//////////////////////
// ASF Stream Chunck
//////////////////////
typedef struct __attribute__((packed)) {
uint16_t type;
uint16_t size;
uint32_t sequence_number;
uint16_t unknown;
uint16_t size_confirm;
} ASF_stream_chunck_t;
// Definition of the differents type of ASF streaming
typedef enum {
ASF_Unknown_e,
ASF_Live_e,
ASF_Prerecorded_e,
ASF_Redirector_e,
ASF_PlainText_e
} ASF_StreamType_e;
/*
* Some macros to swap little endian structures read from an ASF file
* into machine endian format
*/
#ifdef WORDS_BIGENDIAN
#define le2me_ASF_obj_header_t(h) { \
(h)->size = le2me_64((h)->size); \
}
#define le2me_ASF_header_t(h) { \
le2me_ASF_obj_header_t(&(h)->objh); \
(h)->cno = le2me_32((h)->cno); \
}
#define le2me_ASF_stream_header_t(h) { \
(h)->unk1 = le2me_64((h)->unk1); \
(h)->type_size = le2me_32((h)->type_size); \
(h)->stream_size = le2me_32((h)->stream_size); \
(h)->stream_no = le2me_16((h)->stream_no); \
(h)->unk2 = le2me_32((h)->unk2); \
}
#define le2me_ASF_file_header_t(h) { \
(h)->file_size = le2me_64((h)->file_size); \
(h)->creation_time = le2me_64((h)->creation_time); \
(h)->num_packets = le2me_64((h)->num_packets); \
(h)->play_duration = le2me_64((h)->play_duration); \
(h)->send_duration = le2me_64((h)->send_duration); \
(h)->preroll = le2me_64((h)->preroll); \
(h)->flags = le2me_32((h)->flags); \
(h)->min_packet_size = le2me_32((h)->min_packet_size); \
(h)->max_packet_size = le2me_32((h)->max_packet_size); \
(h)->max_bitrate = le2me_32((h)->max_bitrate); \
}
#define le2me_ASF_content_description_t(h) { \
(h)->title_size = le2me_16((h)->title_size); \
(h)->author_size = le2me_16((h)->author_size); \
(h)->copyright_size = le2me_16((h)->copyright_size); \
(h)->comment_size = le2me_16((h)->comment_size); \
(h)->rating_size = le2me_16((h)->rating_size); \
}
#define le2me_BITMAPINFOHEADER(h) { \
(h)->biSize = le2me_32((h)->biSize); \
(h)->biWidth = le2me_32((h)->biWidth); \
(h)->biHeight = le2me_32((h)->biHeight); \
(h)->biPlanes = le2me_16((h)->biPlanes); \
(h)->biBitCount = le2me_16((h)->biBitCount); \
(h)->biCompression = le2me_32((h)->biCompression); \
(h)->biSizeImage = le2me_32((h)->biSizeImage); \
(h)->biXPelsPerMeter = le2me_32((h)->biXPelsPerMeter); \
(h)->biYPelsPerMeter = le2me_32((h)->biYPelsPerMeter); \
(h)->biClrUsed = le2me_32((h)->biClrUsed); \
(h)->biClrImportant = le2me_32((h)->biClrImportant); \
}
#define le2me_WAVEFORMATEX(h) { \
(h)->wFormatTag = le2me_16((h)->wFormatTag); \
(h)->nChannels = le2me_16((h)->nChannels); \
(h)->nSamplesPerSec = le2me_32((h)->nSamplesPerSec); \
(h)->nAvgBytesPerSec = le2me_32((h)->nAvgBytesPerSec); \
(h)->nBlockAlign = le2me_16((h)->nBlockAlign); \
(h)->wBitsPerSample = le2me_16((h)->wBitsPerSample); \
(h)->cbSize = le2me_16((h)->cbSize); \
}
#else
#define le2me_ASF_obj_header_t(h) /**/
#define le2me_ASF_header_t(h) /**/
#define le2me_ASF_stream_header_t(h) /**/
#define le2me_ASF_file_header_t(h) /**/
#define le2me_ASF_content_description_t(h) /**/
#define le2me_BITMAPINFOHEADER(h) /**/
#define le2me_WAVEFORMATEX(h) /**/
#endif
#endif
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