mirror of https://github.com/mpv-player/mpv
234 lines
7.2 KiB
C
234 lines
7.2 KiB
C
#ifndef __ASF_H
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#define __ASF_H
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//#include "config.h" /* for WORDS_BIGENDIAN */
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#include <inttypes.h>
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#include "libavutil/common.h"
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#include "mpbswap.h"
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#ifndef MIN
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#define MIN(a,b) (((a)<(b))?(a):(b))
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#endif
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///////////////////////
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// MS GUID definition
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///////////////////////
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#ifndef GUID_DEFINED
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#define GUID_DEFINED
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// Size of GUID is 16 bytes!
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typedef struct __attribute__((packed)) {
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uint32_t Data1; // 4 bytes
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uint16_t Data2; // 2 bytes
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uint16_t Data3; // 2 bytes
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uint8_t Data4[8]; // 8 bytes
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} GUID_t;
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#endif
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///////////////////////
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// ASF Object Header
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///////////////////////
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typedef struct __attribute__((packed)) {
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uint8_t guid[16];
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uint64_t size;
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} ASF_obj_header_t;
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////////////////
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// ASF Header
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////////////////
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typedef struct __attribute__((packed)) {
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ASF_obj_header_t objh;
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uint32_t cno; // number of subchunks
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uint8_t v1; // unknown (0x01)
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uint8_t v2; // unknown (0x02)
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} ASF_header_t;
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/////////////////////
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// ASF File Header
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/////////////////////
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typedef struct __attribute__((packed)) {
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uint8_t stream_id[16]; // stream GUID
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uint64_t file_size;
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uint64_t creation_time; //File creation time FILETIME 8
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uint64_t num_packets; //Number of packets UINT64 8
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uint64_t play_duration; //Timestamp of the end position UINT64 8
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uint64_t send_duration; //Duration of the playback UINT64 8
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uint64_t preroll; //Time to bufferize before playing UINT32 4
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uint32_t flags; //Unknown, maybe flags ( usually contains 2 ) UINT32 4
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uint32_t min_packet_size; //Min size of the packet, in bytes UINT32 4
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uint32_t max_packet_size; //Max size of the packet UINT32 4
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uint32_t max_bitrate; //Maximum bitrate of the media (sum of all the stream)
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} ASF_file_header_t;
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///////////////////////
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// ASF Stream Header
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///////////////////////
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typedef struct __attribute__((packed)) {
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uint8_t type[16]; // Stream type (audio/video) GUID 16
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uint8_t concealment[16]; // Audio error concealment type GUID 16
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uint64_t unk1; // Unknown, maybe reserved ( usually contains 0 ) UINT64 8
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uint32_t type_size; //Total size of type-specific data UINT32 4
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uint32_t stream_size; //Size of stream-specific data UINT32 4
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uint16_t stream_no; //Stream number UINT16 2
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uint32_t unk2; //Unknown UINT32 4
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} ASF_stream_header_t;
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///////////////////////////
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// ASF Content Description
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///////////////////////////
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typedef struct __attribute__((packed)) {
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uint16_t title_size;
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uint16_t author_size;
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uint16_t copyright_size;
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uint16_t comment_size;
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uint16_t rating_size;
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} ASF_content_description_t;
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////////////////////////
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// ASF Segment Header
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////////////////////////
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typedef struct __attribute__((packed)) {
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uint8_t streamno;
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uint8_t seq;
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uint32_t x;
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uint8_t flag;
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} ASF_segmhdr_t;
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//////////////////////
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// ASF Stream Chunck
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//////////////////////
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typedef struct __attribute__((packed)) {
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uint16_t type;
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uint16_t size;
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uint32_t sequence_number;
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uint16_t unknown;
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uint16_t size_confirm;
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} ASF_stream_chunck_t;
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// Definition of the stream type
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#ifdef WORDS_BIGENDIAN
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#define ASF_STREAMING_CLEAR 0x2443 // $C
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#define ASF_STREAMING_DATA 0x2444 // $D
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#define ASF_STREAMING_END_TRANS 0x2445 // $E
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#define ASF_STREAMING_HEADER 0x2448 // $H
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#else
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#define ASF_STREAMING_CLEAR 0x4324 // $C
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#define ASF_STREAMING_DATA 0x4424 // $D
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#define ASF_STREAMING_END_TRANS 0x4524 // $E
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#define ASF_STREAMING_HEADER 0x4824 // $H
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#endif
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// Definition of the differents type of ASF streaming
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typedef enum {
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ASF_Unknown_e,
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ASF_Live_e,
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ASF_Prerecorded_e,
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ASF_Redirector_e,
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ASF_PlainText_e,
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ASF_Authenticate_e
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} ASF_StreamType_e;
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typedef struct {
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ASF_StreamType_e streaming_type;
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int request;
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int packet_size;
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int *audio_streams,n_audio,*video_streams,n_video;
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int audio_id, video_id;
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} asf_http_streaming_ctrl_t;
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/*
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* Some macros to swap little endian structures read from an ASF file
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* into machine endian format
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*/
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#ifdef WORDS_BIGENDIAN
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#define le2me_ASF_obj_header_t(h) { \
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(h)->size = le2me_64((h)->size); \
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}
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#define le2me_ASF_header_t(h) { \
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le2me_ASF_obj_header_t(&(h)->objh); \
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(h)->cno = le2me_32((h)->cno); \
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}
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#define le2me_ASF_stream_header_t(h) { \
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(h)->unk1 = le2me_64((h)->unk1); \
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(h)->type_size = le2me_32((h)->type_size); \
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(h)->stream_size = le2me_32((h)->stream_size); \
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(h)->stream_no = le2me_16((h)->stream_no); \
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(h)->unk2 = le2me_32((h)->unk2); \
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}
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#define le2me_ASF_file_header_t(h) { \
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(h)->file_size = le2me_64((h)->file_size); \
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(h)->creation_time = le2me_64((h)->creation_time); \
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(h)->num_packets = le2me_64((h)->num_packets); \
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(h)->play_duration = le2me_64((h)->play_duration); \
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(h)->send_duration = le2me_64((h)->send_duration); \
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(h)->preroll = le2me_64((h)->preroll); \
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(h)->flags = le2me_32((h)->flags); \
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(h)->min_packet_size = le2me_32((h)->min_packet_size); \
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(h)->max_packet_size = le2me_32((h)->max_packet_size); \
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(h)->max_bitrate = le2me_32((h)->max_bitrate); \
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}
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#define le2me_ASF_content_description_t(h) { \
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(h)->title_size = le2me_16((h)->title_size); \
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(h)->author_size = le2me_16((h)->author_size); \
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(h)->copyright_size = le2me_16((h)->copyright_size); \
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(h)->comment_size = le2me_16((h)->comment_size); \
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(h)->rating_size = le2me_16((h)->rating_size); \
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}
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#define le2me_BITMAPINFOHEADER(h) { \
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(h)->biSize = le2me_32((h)->biSize); \
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(h)->biWidth = le2me_32((h)->biWidth); \
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(h)->biHeight = le2me_32((h)->biHeight); \
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(h)->biPlanes = le2me_16((h)->biPlanes); \
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(h)->biBitCount = le2me_16((h)->biBitCount); \
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(h)->biCompression = le2me_32((h)->biCompression); \
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(h)->biSizeImage = le2me_32((h)->biSizeImage); \
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(h)->biXPelsPerMeter = le2me_32((h)->biXPelsPerMeter); \
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(h)->biYPelsPerMeter = le2me_32((h)->biYPelsPerMeter); \
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(h)->biClrUsed = le2me_32((h)->biClrUsed); \
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(h)->biClrImportant = le2me_32((h)->biClrImportant); \
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}
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#define le2me_WAVEFORMATEX(h) { \
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(h)->wFormatTag = le2me_16((h)->wFormatTag); \
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(h)->nChannels = le2me_16((h)->nChannels); \
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(h)->nSamplesPerSec = le2me_32((h)->nSamplesPerSec); \
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(h)->nAvgBytesPerSec = le2me_32((h)->nAvgBytesPerSec); \
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(h)->nBlockAlign = le2me_16((h)->nBlockAlign); \
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(h)->wBitsPerSample = le2me_16((h)->wBitsPerSample); \
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(h)->cbSize = le2me_16((h)->cbSize); \
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}
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#define le2me_ASF_stream_chunck_t(h) { \
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(h)->size = le2me_16((h)->size); \
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(h)->sequence_number = le2me_32((h)->sequence_number); \
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(h)->unknown = le2me_16((h)->unknown); \
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(h)->size_confirm = le2me_16((h)->size_confirm); \
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}
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#else
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#define le2me_ASF_obj_header_t(h) /**/
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#define le2me_ASF_header_t(h) /**/
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#define le2me_ASF_stream_header_t(h) /**/
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#define le2me_ASF_file_header_t(h) /**/
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#define le2me_ASF_content_description_t(h) /**/
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#define le2me_BITMAPINFOHEADER(h) /**/
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#define le2me_WAVEFORMATEX(h) /**/
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#define le2me_ASF_stream_chunck_t(h) /**/
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#endif
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// priv struct for the demuxer
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struct asf_priv {
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ASF_header_t header;
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unsigned char* packet;
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int scrambling_h;
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int scrambling_w;
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int scrambling_b;
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unsigned packetsize;
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double packetrate;
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unsigned movielength;
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double avg_vid_frame_time;
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int asf_is_dvr_ms;
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uint32_t asf_frame_state;
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int asf_frame_start_found;
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double dvr_last_vid_pts;
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};
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#endif
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