mirror of
https://github.com/mpv-player/mpv
synced 2024-12-25 08:12:17 +00:00
9b4c7840b9
where signed buffer could cause erroneous values to be filled in descrable variables, add misssing check for one of these variables and restore sign of these variables as insurance that these checks will work even in such case. git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@18002 b3059339-0415-0410-9bf9-f77b7e298cf2
228 lines
7.1 KiB
C
228 lines
7.1 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 "bswap.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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};
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#endif
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