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/*
* Windows Television ( WTV ) demuxer
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* Copyright ( c ) 2010 - 2011 Peter Ross < pross @ xvid . org >
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*
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* This file is part of Libav .
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*
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* Libav is free software ; you can redistribute it and / or
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* 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 .
*
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* Libav is distributed in the hope that it will be useful ,
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* 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
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* License along with Libav ; if not , write to the Free Software
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* Foundation , Inc . , 51 Franklin Street , Fifth Floor , Boston , MA 02110 - 1301 USA
*/
/**
* @ file
* Windows Television ( WTV ) demuxer
* @ author Peter Ross < pross @ xvid . org >
*/
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# include "libavutil/channel_layout.h"
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# include "libavutil/intreadwrite.h"
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# include "libavutil/intfloat.h"
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# include "libavutil/dict.h"
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# include "avformat.h"
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# include "internal.h"
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# include "riff.h"
# include "asf.h"
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# include "mpegts.h"
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/* Macros for formating GUIDs */
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# define PRI_PRETTY_GUID \
" %08x-%04x-%04x-%02x%02x%02x%02x%02x%02x%02x%02x "
# define ARG_PRETTY_GUID(g) \
AV_RL32 ( g ) , AV_RL16 ( g + 4 ) , AV_RL16 ( g + 6 ) , g [ 8 ] , g [ 9 ] , g [ 10 ] , g [ 11 ] , g [ 12 ] , g [ 13 ] , g [ 14 ] , g [ 15 ]
# define LEN_PRETTY_GUID 34
/*
*
* File system routines
*
*/
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# define WTV_SECTOR_BITS INT64_C(12)
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# define WTV_SECTOR_SIZE (1 << WTV_SECTOR_BITS)
# define WTV_BIGSECTOR_BITS 18
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typedef struct {
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AVIOContext * pb_filesystem ; /** file system (AVFormatContext->pb) */
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int sector_bits ; /** sector shift bits; used to convert sector number into pb_filesystem offset */
uint32_t * sectors ; /** file allocation table */
int nb_sectors ; /** number of sectors */
int error ;
int64_t position ;
int64_t length ;
} WtvFile ;
/**
* @ return bytes read , 0 on end of file , or < 0 on error
*/
static int wtvfile_read_packet ( void * opaque , uint8_t * buf , int buf_size )
{
WtvFile * wf = opaque ;
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AVIOContext * pb = wf - > pb_filesystem ;
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int nread = 0 ;
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if ( wf - > error | | pb - > error )
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return - 1 ;
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if ( wf - > position > = wf - > length | | pb - > eof_reached )
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return 0 ;
buf_size = FFMIN ( buf_size , wf - > length - wf - > position ) ;
while ( nread < buf_size ) {
int n ;
int remaining_in_sector = ( 1 < < wf - > sector_bits ) - ( wf - > position & ( ( 1 < < wf - > sector_bits ) - 1 ) ) ;
int read_request = FFMIN ( buf_size - nread , remaining_in_sector ) ;
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n = avio_read ( pb , buf , read_request ) ;
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if ( n < = 0 )
break ;
nread + = n ;
buf + = n ;
wf - > position + = n ;
if ( n = = remaining_in_sector ) {
int i = wf - > position > > wf - > sector_bits ;
if ( i > = wf - > nb_sectors | |
( wf - > sectors [ i ] ! = wf - > sectors [ i - 1 ] + ( 1 < < ( wf - > sector_bits - WTV_SECTOR_BITS ) ) & &
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avio_seek ( pb , wf - > sectors [ i ] < < WTV_SECTOR_BITS , SEEK_SET ) < 0 ) ) {
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wf - > error = 1 ;
break ;
}
}
}
return nread ;
}
/**
* @ return position ( or file length )
*/
static int64_t wtvfile_seek ( void * opaque , int64_t offset , int whence )
{
WtvFile * wf = opaque ;
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AVIOContext * pb = wf - > pb_filesystem ;
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if ( whence = = AVSEEK_SIZE )
return wf - > length ;
else if ( whence = = SEEK_CUR )
offset = wf - > position + offset ;
else if ( whence = = SEEK_END )
offset = wf - > length ;
wf - > error = offset < 0 | | offset > = wf - > length | |
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avio_seek ( pb , ( wf - > sectors [ offset > > wf - > sector_bits ] < < WTV_SECTOR_BITS )
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+ ( offset & ( ( 1 < < wf - > sector_bits ) - 1 ) ) , SEEK_SET ) < 0 ;
wf - > position = offset ;
return offset ;
}
/**
* read non - zero integers ( le32 ) from input stream
* @ param pb
* @ param [ out ] data destination
* @ param count maximum number of integers to read
* @ return total number of integers read
*/
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static int read_ints ( AVIOContext * pb , uint32_t * data , int count )
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{
int i , total = 0 ;
for ( i = 0 ; i < count ; i + + ) {
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if ( ( data [ total ] = avio_rl32 ( pb ) ) )
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total + + ;
}
return total ;
}
/**
* Open file
* @ param first_sector First sector
* @ param length Length of file ( bytes )
* @ param depth File allocation table depth
* @ return NULL on error
*/
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static AVIOContext * wtvfile_open_sector ( int first_sector , uint64_t length , int depth , AVFormatContext * s )
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{
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AVIOContext * pb ;
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WtvFile * wf ;
uint8_t * buffer ;
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if ( avio_seek ( s - > pb , first_sector < < WTV_SECTOR_BITS , SEEK_SET ) < 0 )
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return NULL ;
wf = av_mallocz ( sizeof ( WtvFile ) ) ;
if ( ! wf )
return NULL ;
if ( depth = = 0 ) {
wf - > sectors = av_malloc ( sizeof ( uint32_t ) ) ;
if ( ! wf - > sectors ) {
av_free ( wf ) ;
return NULL ;
}
wf - > sectors [ 0 ] = first_sector ;
wf - > nb_sectors = 1 ;
wf - > sector_bits = WTV_SECTOR_BITS ;
} else if ( depth = = 1 ) {
wf - > sectors = av_malloc ( WTV_SECTOR_SIZE ) ;
if ( ! wf - > sectors ) {
av_free ( wf ) ;
return NULL ;
}
wf - > nb_sectors = read_ints ( s - > pb , wf - > sectors , WTV_SECTOR_SIZE / 4 ) ;
wf - > sector_bits = length & ( 1ULL < < 63 ) ? WTV_SECTOR_BITS : WTV_BIGSECTOR_BITS ;
} else if ( depth = = 2 ) {
uint32_t sectors1 [ WTV_SECTOR_SIZE / 4 ] ;
int nb_sectors1 = read_ints ( s - > pb , sectors1 , WTV_SECTOR_SIZE / 4 ) ;
int i ;
wf - > sectors = av_malloc ( nb_sectors1 < < WTV_SECTOR_BITS ) ;
if ( ! wf - > sectors ) {
av_free ( wf ) ;
return NULL ;
}
wf - > nb_sectors = 0 ;
for ( i = 0 ; i < nb_sectors1 ; i + + ) {
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if ( avio_seek ( s - > pb , sectors1 [ i ] < < WTV_SECTOR_BITS , SEEK_SET ) < 0 )
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break ;
wf - > nb_sectors + = read_ints ( s - > pb , wf - > sectors + i * WTV_SECTOR_SIZE / 4 , WTV_SECTOR_SIZE / 4 ) ;
}
wf - > sector_bits = length & ( 1ULL < < 63 ) ? WTV_SECTOR_BITS : WTV_BIGSECTOR_BITS ;
} else {
av_log ( s , AV_LOG_ERROR , " unsupported file allocation table depth (0x%x) \n " , depth ) ;
av_free ( wf ) ;
return NULL ;
}
if ( ! wf - > nb_sectors ) {
av_free ( wf - > sectors ) ;
av_free ( wf ) ;
return NULL ;
}
/* check length */
length & = 0xFFFFFFFFFFFF ;
if ( length > ( ( int64_t ) wf - > nb_sectors < < wf - > sector_bits ) ) {
av_log ( s , AV_LOG_WARNING , " reported file length (0x% " PRIx64 " ) exceeds number of available sectors (0x% " PRIx64 " ) \n " , length , ( int64_t ) wf - > nb_sectors < < wf - > sector_bits ) ;
length = ( int64_t ) wf - > nb_sectors < < wf - > sector_bits ;
}
wf - > length = length ;
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/* seek to initial sector */
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wf - > position = 0 ;
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if ( avio_seek ( s - > pb , wf - > sectors [ 0 ] < < WTV_SECTOR_BITS , SEEK_SET ) < 0 ) {
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av_free ( wf - > sectors ) ;
av_free ( wf ) ;
return NULL ;
}
wf - > pb_filesystem = s - > pb ;
buffer = av_malloc ( 1 < < wf - > sector_bits ) ;
if ( ! buffer ) {
av_free ( wf - > sectors ) ;
av_free ( wf ) ;
return NULL ;
}
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pb = avio_alloc_context ( buffer , 1 < < wf - > sector_bits , 0 , wf ,
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wtvfile_read_packet , NULL , wtvfile_seek ) ;
if ( ! pb ) {
av_free ( buffer ) ;
av_free ( wf - > sectors ) ;
av_free ( wf ) ;
}
return pb ;
}
static const ff_asf_guid dir_entry_guid =
{ 0x92 , 0xB7 , 0x74 , 0x91 , 0x59 , 0x70 , 0x70 , 0x44 , 0x88 , 0xDF , 0x06 , 0x3B , 0x82 , 0xCC , 0x21 , 0x3D } ;
/**
* Open file using filename
* @ param [ in ] buf directory buffer
* @ param buf_size directory buffer size
* @ param [ in ] filename
* @ param filename_size size of filename
* @ return NULL on error
*/
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static AVIOContext * wtvfile_open2 ( AVFormatContext * s , const uint8_t * buf , int buf_size , const uint8_t * filename , int filename_size )
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{
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const uint8_t * buf_end = buf + buf_size ;
while ( buf + 48 < = buf_end ) {
int dir_length , name_size , first_sector , depth ;
uint64_t file_length ;
const uint8_t * name ;
if ( ff_guidcmp ( buf , dir_entry_guid ) ) {
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av_log ( s , AV_LOG_ERROR , " unknown guid " FF_PRI_GUID " , expected dir_entry_guid; "
" remaining directory entries ignored \n " , FF_ARG_GUID ( buf ) ) ;
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break ;
}
dir_length = AV_RL16 ( buf + 16 ) ;
file_length = AV_RL64 ( buf + 24 ) ;
name_size = 2 * AV_RL32 ( buf + 32 ) ;
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if ( name_size < 0 ) {
av_log ( s , AV_LOG_ERROR ,
" bad filename length, remaining directory entries ignored \n " ) ;
break ;
}
if ( 48 + name_size > buf_end - buf ) {
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av_log ( s , AV_LOG_ERROR , " filename exceeds buffer size; remaining directory entries ignored \n " ) ;
break ;
}
first_sector = AV_RL32 ( buf + 40 + name_size ) ;
depth = AV_RL32 ( buf + 44 + name_size ) ;
/* compare file name; test optional null terminator */
name = buf + 40 ;
if ( name_size > = filename_size & &
! memcmp ( name , filename , filename_size ) & &
( name_size < filename_size + 2 | | ! AV_RN16 ( name + filename_size ) ) )
return wtvfile_open_sector ( first_sector , file_length , depth , s ) ;
buf + = dir_length ;
}
return 0 ;
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}
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# define wtvfile_open(s, buf, buf_size, filename) \
wtvfile_open2 ( s , buf , buf_size , filename , sizeof ( filename ) )
/**
* Close file opened with wtvfile_open_sector ( ) , or wtv_open ( )
*/
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static void wtvfile_close ( AVIOContext * pb )
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{
WtvFile * wf = pb - > opaque ;
av_free ( wf - > sectors ) ;
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av_free ( wf ) ;
av_free ( pb - > buffer ) ;
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av_free ( pb ) ;
}
/*
*
* Main demuxer
*
*/
typedef struct {
int seen_data ;
} WtvStream ;
typedef struct {
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AVIOContext * pb ; /** timeline file */
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int64_t epoch ;
int64_t pts ; /** pts for next data chunk */
int64_t last_valid_pts ; /** latest valid pts, used for interative seeking */
/* maintain private seek index, as the AVIndexEntry->pos is relative to the
start of the ' timeline ' file , not the file system ( AVFormatContext - > pb ) */
AVIndexEntry * index_entries ;
int nb_index_entries ;
unsigned int index_entries_allocated_size ;
} WtvContext ;
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/* WTV GUIDs */
static const ff_asf_guid wtv_guid =
{ 0xB7 , 0xD8 , 0x00 , 0x20 , 0x37 , 0x49 , 0xDA , 0x11 , 0xA6 , 0x4E , 0x00 , 0x07 , 0xE9 , 0x5E , 0xAD , 0x8D } ;
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static const ff_asf_guid metadata_guid =
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{ 0x5A , 0xFE , 0xD7 , 0x6D , 0xC8 , 0x1D , 0x8F , 0x4A , 0x99 , 0x22 , 0xFA , 0xB1 , 0x1C , 0x38 , 0x14 , 0x53 } ;
static const ff_asf_guid timestamp_guid =
{ 0x5B , 0x05 , 0xE6 , 0x1B , 0x97 , 0xA9 , 0x49 , 0x43 , 0x88 , 0x17 , 0x1A , 0x65 , 0x5A , 0x29 , 0x8A , 0x97 } ;
static const ff_asf_guid data_guid =
{ 0x95 , 0xC3 , 0xD2 , 0xC2 , 0x7E , 0x9A , 0xDA , 0x11 , 0x8B , 0xF7 , 0x00 , 0x07 , 0xE9 , 0x5E , 0xAD , 0x8D } ;
static const ff_asf_guid stream_guid =
{ 0xED , 0xA4 , 0x13 , 0x23 , 0x2D , 0xBF , 0x4F , 0x45 , 0xAD , 0x8A , 0xD9 , 0x5B , 0xA7 , 0xF9 , 0x1F , 0xEE } ;
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static const ff_asf_guid stream2_guid =
{ 0xA2 , 0xC3 , 0xD2 , 0xC2 , 0x7E , 0x9A , 0xDA , 0x11 , 0x8B , 0xF7 , 0x00 , 0x07 , 0xE9 , 0x5E , 0xAD , 0x8D } ;
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static const ff_asf_guid EVENTID_SubtitleSpanningEvent =
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{ 0x48 , 0xC0 , 0xCE , 0x5D , 0xB9 , 0xD0 , 0x63 , 0x41 , 0x87 , 0x2C , 0x4F , 0x32 , 0x22 , 0x3B , 0xE8 , 0x8A } ;
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static const ff_asf_guid EVENTID_LanguageSpanningEvent =
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{ 0x6D , 0x66 , 0x92 , 0xE2 , 0x02 , 0x9C , 0x8D , 0x44 , 0xAA , 0x8D , 0x78 , 0x1A , 0x93 , 0xFD , 0xC3 , 0x95 } ;
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static const ff_asf_guid EVENTID_AudioDescriptorSpanningEvent =
{ 0x1C , 0xD4 , 0x7B , 0x10 , 0xDA , 0xA6 , 0x91 , 0x46 , 0x83 , 0x69 , 0x11 , 0xB2 , 0xCD , 0xAA , 0x28 , 0x8E } ;
static const ff_asf_guid EVENTID_CtxADescriptorSpanningEvent =
{ 0xE6 , 0xA2 , 0xB4 , 0x3A , 0x47 , 0x42 , 0x34 , 0x4B , 0x89 , 0x6C , 0x30 , 0xAF , 0xA5 , 0xD2 , 0x1C , 0x24 } ;
static const ff_asf_guid EVENTID_CSDescriptorSpanningEvent =
{ 0xD9 , 0x79 , 0xE7 , 0xEf , 0xF0 , 0x97 , 0x86 , 0x47 , 0x80 , 0x0D , 0x95 , 0xCF , 0x50 , 0x5D , 0xDC , 0x66 } ;
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static const ff_asf_guid EVENTID_DVBScramblingControlSpanningEvent =
{ 0xC4 , 0xE1 , 0xD4 , 0x4B , 0xA1 , 0x90 , 0x09 , 0x41 , 0x82 , 0x36 , 0x27 , 0xF0 , 0x0E , 0x7D , 0xCC , 0x5B } ;
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static const ff_asf_guid EVENTID_StreamIDSpanningEvent =
{ 0x68 , 0xAB , 0xF1 , 0xCA , 0x53 , 0xE1 , 0x41 , 0x4D , 0xA6 , 0xB3 , 0xA7 , 0xC9 , 0x98 , 0xDB , 0x75 , 0xEE } ;
static const ff_asf_guid EVENTID_TeletextSpanningEvent =
{ 0x50 , 0xD9 , 0x99 , 0x95 , 0x33 , 0x5F , 0x17 , 0x46 , 0xAF , 0x7C , 0x1E , 0x54 , 0xB5 , 0x10 , 0xDA , 0xA3 } ;
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static const ff_asf_guid EVENTID_AudioTypeSpanningEvent =
{ 0xBE , 0xBF , 0x1C , 0x50 , 0x49 , 0xB8 , 0xCE , 0x42 , 0x9B , 0xE9 , 0x3D , 0xB8 , 0x69 , 0xFB , 0x82 , 0xB3 } ;
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/* Windows media GUIDs */
/* Media types */
static const ff_asf_guid mediatype_audio =
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{ ' a ' , ' u ' , ' d ' , ' s ' , FF_MEDIASUBTYPE_BASE_GUID } ;
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static const ff_asf_guid mediatype_video =
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{ ' v ' , ' i ' , ' d ' , ' s ' , FF_MEDIASUBTYPE_BASE_GUID } ;
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static const ff_asf_guid mediasubtype_mpeg1payload =
{ 0x81 , 0xEB , 0x36 , 0xE4 , 0x4F , 0x52 , 0xCE , 0x11 , 0x9F , 0x53 , 0x00 , 0x20 , 0xAF , 0x0B , 0xA7 , 0x70 } ;
static const ff_asf_guid mediatype_mpeg2_sections =
{ 0x6C , 0x17 , 0x5F , 0x45 , 0x06 , 0x4B , 0xCE , 0x47 , 0x9A , 0xEF , 0x8C , 0xAE , 0xF7 , 0x3D , 0xF7 , 0xB5 } ;
static const ff_asf_guid mediatype_mpeg2_pes =
{ 0x20 , 0x80 , 0x6D , 0xE0 , 0x46 , 0xDB , 0xCF , 0x11 , 0xB4 , 0xD1 , 0x00 , 0x80 , 0x5F , 0x6C , 0xBB , 0xEA } ;
static const ff_asf_guid mediatype_mstvcaption =
{ 0x89 , 0x8A , 0x8B , 0xB8 , 0x49 , 0xB0 , 0x80 , 0x4C , 0xAD , 0xCF , 0x58 , 0x98 , 0x98 , 0x5E , 0x22 , 0xC1 } ;
/* Media subtypes */
static const ff_asf_guid mediasubtype_cpfilters_processed =
{ 0x28 , 0xBD , 0xAD , 0x46 , 0xD0 , 0x6F , 0x96 , 0x47 , 0x93 , 0xB2 , 0x15 , 0x5C , 0x51 , 0xDC , 0x04 , 0x8D } ;
static const ff_asf_guid mediasubtype_dvb_subtitle =
{ 0xC3 , 0xCB , 0xFF , 0x34 , 0xB3 , 0xD5 , 0x71 , 0x41 , 0x90 , 0x02 , 0xD4 , 0xC6 , 0x03 , 0x01 , 0x69 , 0x7F } ;
static const ff_asf_guid mediasubtype_teletext =
{ 0xE3 , 0x76 , 0x2A , 0xF7 , 0x0A , 0xEB , 0xD0 , 0x11 , 0xAC , 0xE4 , 0x00 , 0x00 , 0xC0 , 0xCC , 0x16 , 0xBA } ;
static const ff_asf_guid mediasubtype_dtvccdata =
{ 0xAA , 0xDD , 0x2A , 0xF5 , 0xF0 , 0x36 , 0xF5 , 0x43 , 0x95 , 0xEA , 0x6D , 0x86 , 0x64 , 0x84 , 0x26 , 0x2A } ;
static const ff_asf_guid mediasubtype_mpeg2_sections =
{ 0x79 , 0x85 , 0x9F , 0x4A , 0xF8 , 0x6B , 0x92 , 0x43 , 0x8A , 0x6D , 0xD2 , 0xDD , 0x09 , 0xFA , 0x78 , 0x61 } ;
/* Formats */
static const ff_asf_guid format_cpfilters_processed =
{ 0x6F , 0xB3 , 0x39 , 0x67 , 0x5F , 0x1D , 0xC2 , 0x4A , 0x81 , 0x92 , 0x28 , 0xBB , 0x0E , 0x73 , 0xD1 , 0x6A } ;
static const ff_asf_guid format_waveformatex =
{ 0x81 , 0x9F , 0x58 , 0x05 , 0x56 , 0xC3 , 0xCE , 0x11 , 0xBF , 0x01 , 0x00 , 0xAA , 0x00 , 0x55 , 0x59 , 0x5A } ;
static const ff_asf_guid format_videoinfo2 =
{ 0xA0 , 0x76 , 0x2A , 0xF7 , 0x0A , 0xEB , 0xD0 , 0x11 , 0xAC , 0xE4 , 0x00 , 0x00 , 0xC0 , 0xCC , 0x16 , 0xBA } ;
static const ff_asf_guid format_mpeg2_video =
{ 0xE3 , 0x80 , 0x6D , 0xE0 , 0x46 , 0xDB , 0xCF , 0x11 , 0xB4 , 0xD1 , 0x00 , 0x80 , 0x5F , 0x6C , 0xBB , 0xEA } ;
static const ff_asf_guid format_none =
{ 0xD6 , 0x17 , 0x64 , 0x0F , 0x18 , 0xC3 , 0xD0 , 0x11 , 0xA4 , 0x3F , 0x00 , 0xA0 , 0xC9 , 0x22 , 0x31 , 0x96 } ;
static const AVCodecGuid video_guids [ ] = {
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{ AV_CODEC_ID_MPEG2VIDEO , { 0x26 , 0x80 , 0x6D , 0xE0 , 0x46 , 0xDB , 0xCF , 0x11 , 0xB4 , 0xD1 , 0x00 , 0x80 , 0x5F , 0x6C , 0xBB , 0xEA } } ,
{ AV_CODEC_ID_NONE }
2010-12-26 01:28:25 +00:00
} ;
static int read_probe ( AVProbeData * p )
{
return ff_guidcmp ( p - > buf , wtv_guid ) ? 0 : AVPROBE_SCORE_MAX ;
}
2011-01-23 01:58:59 +00:00
/**
* Convert win32 FILETIME to ISO - 8601 string
*/
static void filetime_to_iso8601 ( char * buf , int buf_size , int64_t value )
{
time_t t = ( value / 10000000LL ) - 11644473600LL ;
2012-06-23 18:46:26 +00:00
struct tm * tm = gmtime ( & t ) ;
if ( tm )
strftime ( buf , buf_size , " %Y-%m-%d %H:%M:%S " , gmtime ( & t ) ) ;
else
buf [ 0 ] = ' \0 ' ;
2011-01-23 01:58:59 +00:00
}
/**
* Convert crazy time ( 100 ns since 1 Jan 0001 ) to ISO - 8601 string
*/
static void crazytime_to_iso8601 ( char * buf , int buf_size , int64_t value )
{
time_t t = ( value / 10000000LL ) - 719162LL * 86400LL ;
2012-06-23 18:46:26 +00:00
struct tm * tm = gmtime ( & t ) ;
if ( tm )
strftime ( buf , buf_size , " %Y-%m-%d %H:%M:%S " , gmtime ( & t ) ) ;
else
buf [ 0 ] = ' \0 ' ;
2011-01-23 01:58:59 +00:00
}
/**
* Convert OLE DATE to ISO - 8601 string
*/
static void oledate_to_iso8601 ( char * buf , int buf_size , int64_t value )
{
2011-11-27 14:04:16 +00:00
time_t t = 631112400LL + 86400 * av_int2double ( value ) ;
2012-06-23 18:46:26 +00:00
struct tm * tm = gmtime ( & t ) ;
if ( tm )
strftime ( buf , buf_size , " %Y-%m-%d %H:%M:%S " , gmtime ( & t ) ) ;
else
buf [ 0 ] = ' \0 ' ;
2011-01-23 01:58:59 +00:00
}
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static void get_attachment ( AVFormatContext * s , AVIOContext * pb , int length )
2011-01-23 01:58:59 +00:00
{
char mime [ 1024 ] ;
char description [ 1024 ] ;
unsigned int filesize ;
AVStream * st ;
2011-03-03 19:11:45 +00:00
int64_t pos = avio_tell ( pb ) ;
2011-01-23 01:58:59 +00:00
avio_get_str16le ( pb , INT_MAX , mime , sizeof ( mime ) ) ;
if ( strcmp ( mime , " image/jpeg " ) )
goto done ;
2011-02-21 15:43:01 +00:00
avio_r8 ( pb ) ;
2011-01-23 01:58:59 +00:00
avio_get_str16le ( pb , INT_MAX , description , sizeof ( description ) ) ;
2011-02-21 15:43:01 +00:00
filesize = avio_rl32 ( pb ) ;
2011-01-23 01:58:59 +00:00
if ( ! filesize )
goto done ;
2011-06-18 09:43:24 +00:00
st = avformat_new_stream ( s , NULL ) ;
2011-01-23 01:58:59 +00:00
if ( ! st )
goto done ;
2011-05-22 10:46:29 +00:00
av_dict_set ( & st - > metadata , " title " , description , 0 ) ;
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st - > codec - > codec_id = AV_CODEC_ID_MJPEG ;
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st - > codec - > codec_type = AVMEDIA_TYPE_ATTACHMENT ;
st - > codec - > extradata = av_mallocz ( filesize ) ;
2013-06-24 16:12:24 +00:00
st - > id = - 1 ;
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if ( ! st - > codec - > extradata )
goto done ;
st - > codec - > extradata_size = filesize ;
2011-02-21 15:43:01 +00:00
avio_read ( pb , st - > codec - > extradata , filesize ) ;
2011-01-23 01:58:59 +00:00
done :
2011-02-28 13:57:54 +00:00
avio_seek ( pb , pos + length , SEEK_SET ) ;
2011-01-23 01:58:59 +00:00
}
2011-02-20 10:04:12 +00:00
static void get_tag ( AVFormatContext * s , AVIOContext * pb , const char * key , int type , int length )
2011-01-23 01:58:59 +00:00
{
int buf_size = FFMAX ( 2 * length , LEN_PRETTY_GUID ) + 1 ;
char * buf = av_malloc ( buf_size ) ;
if ( ! buf )
return ;
if ( type = = 0 & & length = = 4 ) {
2011-02-21 15:43:01 +00:00
snprintf ( buf , buf_size , " % " PRIi32 , avio_rl32 ( pb ) ) ;
2011-01-23 01:58:59 +00:00
} else if ( type = = 1 ) {
avio_get_str16le ( pb , length , buf , buf_size ) ;
if ( ! strlen ( buf ) ) {
av_free ( buf ) ;
return ;
}
} else if ( type = = 3 & & length = = 4 ) {
2011-02-21 15:43:01 +00:00
strcpy ( buf , avio_rl32 ( pb ) ? " true " : " false " ) ;
2011-01-23 01:58:59 +00:00
} else if ( type = = 4 & & length = = 8 ) {
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int64_t num = avio_rl64 ( pb ) ;
2011-01-23 01:58:59 +00:00
if ( ! strcmp ( key , " WM/EncodingTime " ) | |
! strcmp ( key , " WM/MediaOriginalBroadcastDateTime " ) )
filetime_to_iso8601 ( buf , buf_size , num ) ;
else if ( ! strcmp ( key , " WM/WMRVEncodeTime " ) | |
! strcmp ( key , " WM/WMRVEndTime " ) )
crazytime_to_iso8601 ( buf , buf_size , num ) ;
else if ( ! strcmp ( key , " WM/WMRVExpirationDate " ) )
oledate_to_iso8601 ( buf , buf_size , num ) ;
else if ( ! strcmp ( key , " WM/WMRVBitrate " ) )
2011-11-27 14:04:16 +00:00
snprintf ( buf , buf_size , " %f " , av_int2double ( num ) ) ;
2011-01-23 01:58:59 +00:00
else
snprintf ( buf , buf_size , " % " PRIi64 , num ) ;
} else if ( type = = 5 & & length = = 2 ) {
2011-02-21 15:43:01 +00:00
snprintf ( buf , buf_size , " % " PRIi16 , avio_rl16 ( pb ) ) ;
2011-01-23 01:58:59 +00:00
} else if ( type = = 6 & & length = = 16 ) {
ff_asf_guid guid ;
2011-02-21 15:43:01 +00:00
avio_read ( pb , guid , 16 ) ;
2011-01-23 01:58:59 +00:00
snprintf ( buf , buf_size , PRI_PRETTY_GUID , ARG_PRETTY_GUID ( guid ) ) ;
} else if ( type = = 2 & & ! strcmp ( key , " WM/Picture " ) ) {
get_attachment ( s , pb , length ) ;
av_freep ( & buf ) ;
return ;
} else {
av_freep ( & buf ) ;
av_log ( s , AV_LOG_WARNING , " unsupported metadata entry; key:%s, type:%d, length:0x%x \n " , key , type , length ) ;
2011-03-15 08:14:38 +00:00
avio_skip ( pb , length ) ;
2011-01-23 01:58:59 +00:00
return ;
}
2011-05-22 10:46:29 +00:00
av_dict_set ( & s - > metadata , key , buf , 0 ) ;
2011-01-23 01:58:59 +00:00
av_freep ( & buf ) ;
}
/**
* Parse metadata entries
*/
2011-02-20 10:04:12 +00:00
static void parse_legacy_attrib ( AVFormatContext * s , AVIOContext * pb )
2011-01-23 01:58:59 +00:00
{
ff_asf_guid guid ;
int length , type ;
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while ( ! pb - > eof_reached ) {
2011-01-23 01:58:59 +00:00
char key [ 1024 ] ;
ff_get_guid ( pb , & guid ) ;
2011-02-21 15:43:01 +00:00
type = avio_rl32 ( pb ) ;
length = avio_rl32 ( pb ) ;
2011-01-23 01:58:59 +00:00
if ( ! length )
break ;
if ( ff_guidcmp ( & guid , metadata_guid ) ) {
2013-04-20 11:36:45 +00:00
av_log ( s , AV_LOG_WARNING , " unknown guid " FF_PRI_GUID " , expected metadata_guid; "
" remaining metadata entries ignored \n " , FF_ARG_GUID ( guid ) ) ;
2011-01-23 01:58:59 +00:00
break ;
}
avio_get_str16le ( pb , INT_MAX , key , sizeof ( key ) ) ;
get_tag ( s , pb , key , type , length ) ;
}
ff_metadata_conv ( & s - > metadata , NULL , ff_asf_metadata_conv ) ;
}
2010-12-26 01:28:25 +00:00
/**
* parse VIDEOINFOHEADER2 structure
* @ return bytes consumed
*/
static int parse_videoinfoheader2 ( AVFormatContext * s , AVStream * st )
{
2011-01-23 01:58:59 +00:00
WtvContext * wtv = s - > priv_data ;
2011-02-20 10:04:12 +00:00
AVIOContext * pb = wtv - > pb ;
2010-12-26 01:28:25 +00:00
2011-03-15 08:14:38 +00:00
avio_skip ( pb , 72 ) ; // picture aspect ratio is unreliable
2010-12-26 01:28:25 +00:00
ff_get_bmp_header ( pb , st ) ;
return 72 + 40 ;
}
/**
* Parse MPEG1WAVEFORMATEX extradata structure
*/
static void parse_mpeg1waveformatex ( AVStream * st )
{
/* fwHeadLayer */
switch ( AV_RL16 ( st - > codec - > extradata ) ) {
2012-08-05 09:11:04 +00:00
case 0x0001 : st - > codec - > codec_id = AV_CODEC_ID_MP1 ; break ;
case 0x0002 : st - > codec - > codec_id = AV_CODEC_ID_MP2 ; break ;
case 0x0004 : st - > codec - > codec_id = AV_CODEC_ID_MP3 ; break ;
2010-12-26 01:28:25 +00:00
}
st - > codec - > bit_rate = AV_RL32 ( st - > codec - > extradata + 2 ) ; /* dwHeadBitrate */
/* dwHeadMode */
switch ( AV_RL16 ( st - > codec - > extradata + 6 ) ) {
2012-04-07 22:55:43 +00:00
case 1 :
case 2 :
case 4 : st - > codec - > channels = 2 ;
st - > codec - > channel_layout = AV_CH_LAYOUT_STEREO ;
break ;
case 8 : st - > codec - > channels = 1 ;
st - > codec - > channel_layout = AV_CH_LAYOUT_MONO ;
break ;
2010-12-26 01:28:25 +00:00
}
}
2011-01-04 11:38:29 +00:00
/**
* Initialise stream
* @ param st Stream to initialise , or NULL to create and initialise new stream
* @ return NULL on error
*/
static AVStream * new_stream ( AVFormatContext * s , AVStream * st , int sid , int codec_type )
2010-12-26 01:28:25 +00:00
{
2011-01-04 11:38:29 +00:00
if ( st ) {
if ( st - > codec - > extradata ) {
av_freep ( & st - > codec - > extradata ) ;
st - > codec - > extradata_size = 0 ;
}
} else {
2011-01-09 02:35:06 +00:00
WtvStream * wst = av_mallocz ( sizeof ( WtvStream ) ) ;
if ( ! wst )
return NULL ;
2011-06-18 09:43:24 +00:00
st = avformat_new_stream ( s , NULL ) ;
2011-01-04 11:38:29 +00:00
if ( ! st )
return NULL ;
2011-06-18 09:43:24 +00:00
st - > id = sid ;
2011-01-09 02:35:06 +00:00
st - > priv_data = wst ;
2011-01-04 11:38:29 +00:00
}
2010-12-26 01:28:25 +00:00
st - > codec - > codec_type = codec_type ;
st - > need_parsing = AVSTREAM_PARSE_FULL ;
2011-11-29 18:28:15 +00:00
avpriv_set_pts_info ( st , 64 , 1 , 10000000 ) ;
2010-12-26 01:28:25 +00:00
return st ;
}
/**
2011-01-04 11:38:29 +00:00
* parse Media Type structure and populate stream
* @ param st Stream , or NULL to create new stream
2010-12-26 01:28:25 +00:00
* @ param mediatype Mediatype GUID
* @ param subtype Subtype GUID
* @ param formattype Format GUID
* @ param size Size of format buffer
* @ return NULL on error
*/
2011-01-04 11:38:29 +00:00
static AVStream * parse_media_type ( AVFormatContext * s , AVStream * st , int sid ,
2010-12-26 01:28:25 +00:00
ff_asf_guid mediatype , ff_asf_guid subtype ,
ff_asf_guid formattype , int size )
{
2011-01-23 01:58:59 +00:00
WtvContext * wtv = s - > priv_data ;
2011-02-20 10:04:12 +00:00
AVIOContext * pb = wtv - > pb ;
2010-12-26 01:28:25 +00:00
if ( ! ff_guidcmp ( subtype , mediasubtype_cpfilters_processed ) & &
! ff_guidcmp ( formattype , format_cpfilters_processed ) ) {
ff_asf_guid actual_subtype ;
ff_asf_guid actual_formattype ;
if ( size < 32 ) {
av_log ( s , AV_LOG_WARNING , " format buffer size underflow \n " ) ;
2011-03-15 08:14:38 +00:00
avio_skip ( pb , size ) ;
2010-12-26 01:28:25 +00:00
return NULL ;
}
2011-03-15 08:14:38 +00:00
avio_skip ( pb , size - 32 ) ;
2010-12-26 01:28:25 +00:00
ff_get_guid ( pb , & actual_subtype ) ;
ff_get_guid ( pb , & actual_formattype ) ;
2011-02-28 13:57:54 +00:00
avio_seek ( pb , - size , SEEK_CUR ) ;
2010-12-26 01:28:25 +00:00
2011-01-04 11:38:29 +00:00
st = parse_media_type ( s , st , sid , mediatype , actual_subtype , actual_formattype , size - 32 ) ;
2011-03-15 08:14:38 +00:00
avio_skip ( pb , 32 ) ;
2010-12-26 01:28:25 +00:00
return st ;
} else if ( ! ff_guidcmp ( mediatype , mediatype_audio ) ) {
2011-01-04 11:38:29 +00:00
st = new_stream ( s , st , sid , AVMEDIA_TYPE_AUDIO ) ;
2010-12-26 01:28:25 +00:00
if ( ! st )
return NULL ;
if ( ! ff_guidcmp ( formattype , format_waveformatex ) ) {
2011-04-12 15:44:20 +00:00
int ret = ff_get_wav_header ( pb , st - > codec , size ) ;
if ( ret < 0 )
return NULL ;
2010-12-26 01:28:25 +00:00
} else {
if ( ff_guidcmp ( formattype , format_none ) )
2013-04-20 11:36:45 +00:00
av_log ( s , AV_LOG_WARNING , " unknown formattype: " FF_PRI_GUID " \n " , FF_ARG_GUID ( formattype ) ) ;
2011-03-15 08:14:38 +00:00
avio_skip ( pb , size ) ;
2010-12-26 01:28:25 +00:00
}
2013-04-20 11:36:45 +00:00
if ( ! memcmp ( subtype + 4 , ( const uint8_t [ ] ) { FF_MEDIASUBTYPE_BASE_GUID } , 12 ) ) {
2010-12-26 01:28:25 +00:00
st - > codec - > codec_id = ff_wav_codec_get_id ( AV_RL32 ( subtype ) , st - > codec - > bits_per_coded_sample ) ;
} else if ( ! ff_guidcmp ( subtype , mediasubtype_mpeg1payload ) ) {
if ( st - > codec - > extradata & & st - > codec - > extradata_size > = 22 )
parse_mpeg1waveformatex ( st ) ;
else
av_log ( s , AV_LOG_WARNING , " MPEG1WAVEFORMATEX underflow \n " ) ;
} else {
2013-04-20 11:36:45 +00:00
st - > codec - > codec_id = ff_codec_guid_get_id ( ff_codec_wav_guids , subtype ) ;
2012-08-05 09:11:04 +00:00
if ( st - > codec - > codec_id = = AV_CODEC_ID_NONE )
2013-04-20 11:36:45 +00:00
av_log ( s , AV_LOG_WARNING , " unknown subtype: " FF_PRI_GUID " \n " , FF_ARG_GUID ( subtype ) ) ;
2010-12-26 01:28:25 +00:00
}
return st ;
} else if ( ! ff_guidcmp ( mediatype , mediatype_video ) ) {
2011-01-04 11:38:29 +00:00
st = new_stream ( s , st , sid , AVMEDIA_TYPE_VIDEO ) ;
2010-12-26 01:28:25 +00:00
if ( ! st )
return NULL ;
if ( ! ff_guidcmp ( formattype , format_videoinfo2 ) ) {
int consumed = parse_videoinfoheader2 ( s , st ) ;
2011-03-17 06:35:18 +00:00
avio_skip ( pb , FFMAX ( size - consumed , 0 ) ) ;
2010-12-26 01:28:25 +00:00
} else if ( ! ff_guidcmp ( formattype , format_mpeg2_video ) ) {
int consumed = parse_videoinfoheader2 ( s , st ) ;
2011-03-17 06:35:18 +00:00
avio_skip ( pb , FFMAX ( size - consumed , 0 ) ) ;
2010-12-26 01:28:25 +00:00
} else {
if ( ff_guidcmp ( formattype , format_none ) )
2013-04-20 11:36:45 +00:00
av_log ( s , AV_LOG_WARNING , " unknown formattype: " FF_PRI_GUID " \n " , FF_ARG_GUID ( formattype ) ) ;
2011-03-15 08:14:38 +00:00
avio_skip ( pb , size ) ;
2010-12-26 01:28:25 +00:00
}
2013-04-20 11:36:45 +00:00
if ( ! memcmp ( subtype + 4 , ( const uint8_t [ ] ) { FF_MEDIASUBTYPE_BASE_GUID } , 12 ) ) {
2010-12-26 01:28:25 +00:00
st - > codec - > codec_id = ff_codec_get_id ( ff_codec_bmp_tags , AV_RL32 ( subtype ) ) ;
} else {
st - > codec - > codec_id = ff_codec_guid_get_id ( video_guids , subtype ) ;
}
2012-08-05 09:11:04 +00:00
if ( st - > codec - > codec_id = = AV_CODEC_ID_NONE )
2013-04-20 11:36:45 +00:00
av_log ( s , AV_LOG_WARNING , " unknown subtype: " FF_PRI_GUID " \n " , FF_ARG_GUID ( subtype ) ) ;
2010-12-26 01:28:25 +00:00
return st ;
} else if ( ! ff_guidcmp ( mediatype , mediatype_mpeg2_pes ) & &
! ff_guidcmp ( subtype , mediasubtype_dvb_subtitle ) ) {
2011-01-04 11:38:29 +00:00
st = new_stream ( s , st , sid , AVMEDIA_TYPE_SUBTITLE ) ;
2010-12-26 01:28:25 +00:00
if ( ! st )
return NULL ;
if ( ff_guidcmp ( formattype , format_none ) )
2013-04-20 11:36:45 +00:00
av_log ( s , AV_LOG_WARNING , " unknown formattype: " FF_PRI_GUID " \n " , FF_ARG_GUID ( formattype ) ) ;
2011-03-15 08:14:38 +00:00
avio_skip ( pb , size ) ;
2012-08-05 09:11:04 +00:00
st - > codec - > codec_id = AV_CODEC_ID_DVB_SUBTITLE ;
2010-12-26 01:28:25 +00:00
return st ;
} else if ( ! ff_guidcmp ( mediatype , mediatype_mstvcaption ) & &
( ! ff_guidcmp ( subtype , mediasubtype_teletext ) | | ! ff_guidcmp ( subtype , mediasubtype_dtvccdata ) ) ) {
2011-01-04 11:38:29 +00:00
st = new_stream ( s , st , sid , AVMEDIA_TYPE_SUBTITLE ) ;
2010-12-26 01:28:25 +00:00
if ( ! st )
return NULL ;
if ( ff_guidcmp ( formattype , format_none ) )
2013-04-20 11:36:45 +00:00
av_log ( s , AV_LOG_WARNING , " unknown formattype: " FF_PRI_GUID " \n " , FF_ARG_GUID ( formattype ) ) ;
2011-03-15 08:14:38 +00:00
avio_skip ( pb , size ) ;
2012-08-05 09:11:04 +00:00
st - > codec - > codec_id = AV_CODEC_ID_DVB_TELETEXT ;
2010-12-26 01:28:25 +00:00
return st ;
} else if ( ! ff_guidcmp ( mediatype , mediatype_mpeg2_sections ) & &
! ff_guidcmp ( subtype , mediasubtype_mpeg2_sections ) ) {
if ( ff_guidcmp ( formattype , format_none ) )
2013-04-20 11:36:45 +00:00
av_log ( s , AV_LOG_WARNING , " unknown formattype: " FF_PRI_GUID " \n " , FF_ARG_GUID ( formattype ) ) ;
2011-03-15 08:14:38 +00:00
avio_skip ( pb , size ) ;
2010-12-26 01:28:25 +00:00
return NULL ;
}
2013-04-20 11:36:45 +00:00
av_log ( s , AV_LOG_WARNING , " unknown media type, mediatype: " FF_PRI_GUID
" , subtype: " FF_PRI_GUID " , formattype: " FF_PRI_GUID " \n " ,
FF_ARG_GUID ( mediatype ) , FF_ARG_GUID ( subtype ) , FF_ARG_GUID ( formattype ) ) ;
2011-03-15 08:14:38 +00:00
avio_skip ( pb , size ) ;
2010-12-26 01:28:25 +00:00
return NULL ;
}
enum {
SEEK_TO_DATA = 0 ,
SEEK_TO_PTS ,
} ;
/**
* Parse WTV chunks
2011-01-23 01:58:59 +00:00
* @ param mode SEEK_TO_DATA or SEEK_TO_PTS
* @ param seekts timestamp
2011-07-02 11:23:35 +00:00
* @ param [ out ] len_ptr Length of data chunk
2010-12-26 01:28:25 +00:00
* @ return stream index of data chunk , or < 0 on error
*/
static int parse_chunks ( AVFormatContext * s , int mode , int64_t seekts , int * len_ptr )
{
WtvContext * wtv = s - > priv_data ;
2011-02-20 10:04:12 +00:00
AVIOContext * pb = wtv - > pb ;
2011-03-07 20:50:25 +00:00
while ( ! pb - > eof_reached ) {
2010-12-26 01:28:25 +00:00
ff_asf_guid g ;
int len , sid , consumed ;
ff_get_guid ( pb , & g ) ;
2011-02-21 15:43:01 +00:00
len = avio_rl32 ( pb ) ;
2011-01-09 02:21:30 +00:00
if ( len < 32 )
break ;
2011-02-21 15:43:01 +00:00
sid = avio_rl32 ( pb ) & 0x7FFF ;
2011-03-15 08:14:38 +00:00
avio_skip ( pb , 8 ) ;
2010-12-26 01:28:25 +00:00
consumed = 32 ;
if ( ! ff_guidcmp ( g , stream_guid ) ) {
if ( ff_find_stream_index ( s , sid ) < 0 ) {
ff_asf_guid mediatype , subtype , formattype ;
int size ;
2011-03-15 08:14:38 +00:00
avio_skip ( pb , 28 ) ;
2011-02-05 01:10:32 +00:00
ff_get_guid ( pb , & mediatype ) ;
ff_get_guid ( pb , & subtype ) ;
2011-03-15 08:14:38 +00:00
avio_skip ( pb , 12 ) ;
2011-02-05 01:10:32 +00:00
ff_get_guid ( pb , & formattype ) ;
2011-02-21 15:43:01 +00:00
size = avio_rl32 ( pb ) ;
2011-02-05 01:10:32 +00:00
parse_media_type ( s , 0 , sid , mediatype , subtype , formattype , size ) ;
consumed + = 92 + size ;
2010-12-26 01:28:25 +00:00
}
2011-01-04 11:38:29 +00:00
} else if ( ! ff_guidcmp ( g , stream2_guid ) ) {
int stream_index = ff_find_stream_index ( s , sid ) ;
2011-01-09 02:35:06 +00:00
if ( stream_index > = 0 & & ! ( ( WtvStream * ) s - > streams [ stream_index ] - > priv_data ) - > seen_data ) {
2011-01-04 11:38:29 +00:00
ff_asf_guid mediatype , subtype , formattype ;
int size ;
2011-03-15 08:14:38 +00:00
avio_skip ( pb , 12 ) ;
2011-01-04 11:38:29 +00:00
ff_get_guid ( pb , & mediatype ) ;
ff_get_guid ( pb , & subtype ) ;
2011-03-15 08:14:38 +00:00
avio_skip ( pb , 12 ) ;
2011-01-04 11:38:29 +00:00
ff_get_guid ( pb , & formattype ) ;
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size = avio_rl32 ( pb ) ;
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parse_media_type ( s , s - > streams [ stream_index ] , sid , mediatype , subtype , formattype , size ) ;
consumed + = 76 + size ;
}
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} else if ( ! ff_guidcmp ( g , EVENTID_AudioDescriptorSpanningEvent ) | |
! ff_guidcmp ( g , EVENTID_CtxADescriptorSpanningEvent ) | |
! ff_guidcmp ( g , EVENTID_CSDescriptorSpanningEvent ) | |
! ff_guidcmp ( g , EVENTID_StreamIDSpanningEvent ) | |
! ff_guidcmp ( g , EVENTID_SubtitleSpanningEvent ) | |
! ff_guidcmp ( g , EVENTID_TeletextSpanningEvent ) ) {
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int stream_index = ff_find_stream_index ( s , sid ) ;
if ( stream_index > = 0 ) {
AVStream * st = s - > streams [ stream_index ] ;
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uint8_t buf [ 258 ] ;
const uint8_t * pbuf = buf ;
int buf_size ;
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avio_skip ( pb , 8 ) ;
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consumed + = 8 ;
if ( ! ff_guidcmp ( g , EVENTID_CtxADescriptorSpanningEvent ) | |
! ff_guidcmp ( g , EVENTID_CSDescriptorSpanningEvent ) ) {
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avio_skip ( pb , 6 ) ;
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consumed + = 6 ;
}
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buf_size = FFMIN ( len - consumed , sizeof ( buf ) ) ;
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avio_read ( pb , buf , buf_size ) ;
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consumed + = buf_size ;
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ff_parse_mpeg2_descriptor ( s , st , 0 , & pbuf , buf + buf_size , NULL , 0 , 0 , NULL ) ;
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}
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} else if ( ! ff_guidcmp ( g , EVENTID_AudioTypeSpanningEvent ) ) {
int stream_index = ff_find_stream_index ( s , sid ) ;
if ( stream_index > = 0 ) {
AVStream * st = s - > streams [ stream_index ] ;
int audio_type ;
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avio_skip ( pb , 8 ) ;
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audio_type = avio_r8 ( pb ) ;
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if ( audio_type = = 2 )
st - > disposition | = AV_DISPOSITION_HEARING_IMPAIRED ;
else if ( audio_type = = 3 )
st - > disposition | = AV_DISPOSITION_VISUAL_IMPAIRED ;
consumed + = 9 ;
}
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} else if ( ! ff_guidcmp ( g , EVENTID_DVBScramblingControlSpanningEvent ) ) {
int stream_index = ff_find_stream_index ( s , sid ) ;
if ( stream_index > = 0 ) {
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avio_skip ( pb , 12 ) ;
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if ( avio_rl32 ( pb ) )
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av_log ( s , AV_LOG_WARNING , " DVB scrambled stream detected (st:%d), decoding will likely fail \n " , stream_index ) ;
consumed + = 16 ;
}
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} else if ( ! ff_guidcmp ( g , EVENTID_LanguageSpanningEvent ) ) {
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int stream_index = ff_find_stream_index ( s , sid ) ;
if ( stream_index > = 0 ) {
AVStream * st = s - > streams [ stream_index ] ;
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uint8_t language [ 4 ] ;
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avio_skip ( pb , 12 ) ;
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avio_read ( pb , language , 3 ) ;
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if ( language [ 0 ] ) {
language [ 3 ] = 0 ;
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av_dict_set ( & st - > metadata , " language " , language , 0 ) ;
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if ( ! strcmp ( language , " nar " ) | | ! strcmp ( language , " NAR " ) )
st - > disposition | = AV_DISPOSITION_VISUAL_IMPAIRED ;
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}
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consumed + = 15 ;
}
} else if ( ! ff_guidcmp ( g , timestamp_guid ) ) {
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int stream_index = ff_find_stream_index ( s , sid ) ;
if ( stream_index > = 0 ) {
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avio_skip ( pb , 8 ) ;
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wtv - > pts = avio_rl64 ( pb ) ;
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consumed + = 16 ;
if ( wtv - > pts = = - 1 )
wtv - > pts = AV_NOPTS_VALUE ;
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else {
wtv - > last_valid_pts = wtv - > pts ;
if ( wtv - > epoch = = AV_NOPTS_VALUE | | wtv - > pts < wtv - > epoch )
wtv - > epoch = wtv - > pts ;
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if ( mode = = SEEK_TO_PTS & & wtv - > pts > = seekts ) {
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# define WTV_PAD8(x) (((x) + 7) & ~7)
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avio_skip ( pb , WTV_PAD8 ( len ) - consumed ) ;
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return 0 ;
}
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}
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}
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} else if ( ! ff_guidcmp ( g , data_guid ) ) {
int stream_index = ff_find_stream_index ( s , sid ) ;
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if ( mode = = SEEK_TO_DATA & & stream_index > = 0 & & len > 32 ) {
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WtvStream * wst = s - > streams [ stream_index ] - > priv_data ;
wst - > seen_data = 1 ;
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if ( len_ptr ) {
* len_ptr = len ;
}
return stream_index ;
}
} else if (
! ff_guidcmp ( g , /* DSATTRIB_CAPTURE_STREAMTIME */ ( const ff_asf_guid ) { 0x14 , 0x56 , 0x1A , 0x0C , 0xCD , 0x30 , 0x40 , 0x4F , 0xBC , 0xBF , 0xD0 , 0x3E , 0x52 , 0x30 , 0x62 , 0x07 } ) | |
! ff_guidcmp ( g , /* DSATTRIB_PicSampleSeq */ ( const ff_asf_guid ) { 0x02 , 0xAE , 0x5B , 0x2F , 0x8F , 0x7B , 0x60 , 0x4F , 0x82 , 0xD6 , 0xE4 , 0xEA , 0x2F , 0x1F , 0x4C , 0x99 } ) | |
! ff_guidcmp ( g , /* DSATTRIB_TRANSPORT_PROPERTIES */ ( const ff_asf_guid ) { 0x12 , 0xF6 , 0x22 , 0xB6 , 0xAD , 0x47 , 0x71 , 0x46 , 0xAD , 0x6C , 0x05 , 0xA9 , 0x8E , 0x65 , 0xDE , 0x3A } ) | |
! ff_guidcmp ( g , /* dvr_ms_vid_frame_rep_data */ ( const ff_asf_guid ) { 0xCC , 0x32 , 0x64 , 0xDD , 0x29 , 0xE2 , 0xDB , 0x40 , 0x80 , 0xF6 , 0xD2 , 0x63 , 0x28 , 0xD2 , 0x76 , 0x1F } ) | |
! ff_guidcmp ( g , /* EVENTID_ChannelChangeSpanningEvent */ ( const ff_asf_guid ) { 0xE5 , 0xC5 , 0x67 , 0x90 , 0x5C , 0x4C , 0x05 , 0x42 , 0x86 , 0xC8 , 0x7A , 0xFE , 0x20 , 0xFE , 0x1E , 0xFA } ) | |
! ff_guidcmp ( g , /* EVENTID_ChannelInfoSpanningEvent */ ( const ff_asf_guid ) { 0x80 , 0x6D , 0xF3 , 0x41 , 0x32 , 0x41 , 0xC2 , 0x4C , 0xB1 , 0x21 , 0x01 , 0xA4 , 0x32 , 0x19 , 0xD8 , 0x1B } ) | |
! ff_guidcmp ( g , /* EVENTID_ChannelTypeSpanningEvent */ ( const ff_asf_guid ) { 0x51 , 0x1D , 0xAB , 0x72 , 0xD2 , 0x87 , 0x9B , 0x48 , 0xBA , 0x11 , 0x0E , 0x08 , 0xDC , 0x21 , 0x02 , 0x43 } ) | |
! ff_guidcmp ( g , /* EVENTID_PIDListSpanningEvent */ ( const ff_asf_guid ) { 0x65 , 0x8F , 0xFC , 0x47 , 0xBB , 0xE2 , 0x34 , 0x46 , 0x9C , 0xEF , 0xFD , 0xBF , 0xE6 , 0x26 , 0x1D , 0x5C } ) | |
! ff_guidcmp ( g , /* EVENTID_SignalAndServiceStatusSpanningEvent */ ( const ff_asf_guid ) { 0xCB , 0xC5 , 0x68 , 0x80 , 0x04 , 0x3C , 0x2B , 0x49 , 0xB4 , 0x7D , 0x03 , 0x08 , 0x82 , 0x0D , 0xCE , 0x51 } ) | |
! ff_guidcmp ( g , /* EVENTID_StreamTypeSpanningEvent */ ( const ff_asf_guid ) { 0xBC , 0x2E , 0xAF , 0x82 , 0xA6 , 0x30 , 0x64 , 0x42 , 0xA8 , 0x0B , 0xAD , 0x2E , 0x13 , 0x72 , 0xAC , 0x60 } ) | |
! ff_guidcmp ( g , ( const ff_asf_guid ) { 0x1E , 0xBE , 0xC3 , 0xC5 , 0x43 , 0x92 , 0xDC , 0x11 , 0x85 , 0xE5 , 0x00 , 0x12 , 0x3F , 0x6F , 0x73 , 0xB9 } ) | |
! ff_guidcmp ( g , ( const ff_asf_guid ) { 0x3B , 0x86 , 0xA2 , 0xB1 , 0xEB , 0x1E , 0xC3 , 0x44 , 0x8C , 0x88 , 0x1C , 0xA3 , 0xFF , 0xE3 , 0xE7 , 0x6A } ) | |
! ff_guidcmp ( g , ( const ff_asf_guid ) { 0x4E , 0x7F , 0x4C , 0x5B , 0xC4 , 0xD0 , 0x38 , 0x4B , 0xA8 , 0x3E , 0x21 , 0x7F , 0x7B , 0xBF , 0x52 , 0xE7 } ) | |
! ff_guidcmp ( g , ( const ff_asf_guid ) { 0x63 , 0x36 , 0xEB , 0xFE , 0xA1 , 0x7E , 0xD9 , 0x11 , 0x83 , 0x08 , 0x00 , 0x07 , 0xE9 , 0x5E , 0xAD , 0x8D } ) | |
! ff_guidcmp ( g , ( const ff_asf_guid ) { 0x70 , 0xE9 , 0xF1 , 0xF8 , 0x89 , 0xA4 , 0x4C , 0x4D , 0x83 , 0x73 , 0xB8 , 0x12 , 0xE0 , 0xD5 , 0xF8 , 0x1E } ) | |
! ff_guidcmp ( g , ( const ff_asf_guid ) { 0x96 , 0xC3 , 0xD2 , 0xC2 , 0x7E , 0x9A , 0xDA , 0x11 , 0x8B , 0xF7 , 0x00 , 0x07 , 0xE9 , 0x5E , 0xAD , 0x8D } ) | |
! ff_guidcmp ( g , ( const ff_asf_guid ) { 0x97 , 0xC3 , 0xD2 , 0xC2 , 0x7E , 0x9A , 0xDA , 0x11 , 0x8B , 0xF7 , 0x00 , 0x07 , 0xE9 , 0x5E , 0xAD , 0x8D } ) | |
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! ff_guidcmp ( g , ( const ff_asf_guid ) { 0xA1 , 0xC3 , 0xD2 , 0xC2 , 0x7E , 0x9A , 0xDA , 0x11 , 0x8B , 0xF7 , 0x00 , 0x07 , 0xE9 , 0x5E , 0xAD , 0x8D } ) ) {
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//ignore known guids
} else
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av_log ( s , AV_LOG_WARNING , " unsupported chunk: " FF_PRI_GUID " \n " , FF_ARG_GUID ( g ) ) ;
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avio_skip ( pb , WTV_PAD8 ( len ) - consumed ) ;
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}
return AVERROR_EOF ;
}
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/* declare utf16le strings */
# define _ , 0,
static const uint8_t timeline_le16 [ ] =
{ ' t ' _ ' i ' _ ' m ' _ ' e ' _ ' l ' _ ' i ' _ ' n ' _ ' e ' , 0 } ;
static const uint8_t table_0_entries_legacy_attrib_le16 [ ] =
{ ' t ' _ ' a ' _ ' b ' _ ' l ' _ ' e ' _ ' . ' _ ' 0 ' _ ' . ' _ ' e ' _ ' n ' _ ' t ' _ ' r ' _ ' i ' _ ' e ' _ ' s ' _ ' . ' _ ' l ' _ ' e ' _ ' g ' _ ' a ' _ ' c ' _ ' y ' _ ' _ ' _ ' a ' _ ' t ' _ ' t ' _ ' r ' _ ' i ' _ ' b ' , 0 } ;
static const uint8_t table_0_entries_time_le16 [ ] =
{ ' t ' _ ' a ' _ ' b ' _ ' l ' _ ' e ' _ ' . ' _ ' 0 ' _ ' . ' _ ' e ' _ ' n ' _ ' t ' _ ' r ' _ ' i ' _ ' e ' _ ' s ' _ ' . ' _ ' t ' _ ' i ' _ ' m ' _ ' e ' , 0 } ;
static const uint8_t timeline_table_0_entries_Events_le16 [ ] =
{ ' t ' _ ' i ' _ ' m ' _ ' e ' _ ' l ' _ ' i ' _ ' n ' _ ' e ' _ ' . ' _ ' t ' _ ' a ' _ ' b ' _ ' l ' _ ' e ' _ ' . ' _ ' 0 ' _ ' . ' _ ' e ' _ ' n ' _ ' t ' _ ' r ' _ ' i ' _ ' e ' _ ' s ' _ ' . ' _ ' E ' _ ' v ' _ ' e ' _ ' n ' _ ' t ' _ ' s ' , 0 } ;
# undef _
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2012-01-12 12:20:36 +00:00
static int read_header ( AVFormatContext * s )
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{
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WtvContext * wtv = s - > priv_data ;
int root_sector , root_size ;
uint8_t root [ WTV_SECTOR_SIZE ] ;
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AVIOContext * pb ;
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int64_t timeline_pos ;
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int ret ;
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wtv - > epoch =
wtv - > pts =
wtv - > last_valid_pts = AV_NOPTS_VALUE ;
/* read root directory sector */
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avio_skip ( s - > pb , 0x30 ) ;
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root_size = avio_rl32 ( s - > pb ) ;
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if ( root_size > sizeof ( root ) ) {
av_log ( s , AV_LOG_ERROR , " root directory size exceeds sector size \n " ) ;
return AVERROR_INVALIDDATA ;
}
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avio_skip ( s - > pb , 4 ) ;
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root_sector = avio_rl32 ( s - > pb ) ;
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avio_seek ( s - > pb , root_sector < < WTV_SECTOR_BITS , SEEK_SET ) ;
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root_size = avio_read ( s - > pb , root , root_size ) ;
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if ( root_size < 0 )
return AVERROR_INVALIDDATA ;
/* parse chunks up until first data chunk */
wtv - > pb = wtvfile_open ( s , root , root_size , timeline_le16 ) ;
if ( ! wtv - > pb ) {
av_log ( s , AV_LOG_ERROR , " timeline data missing \n " ) ;
return AVERROR_INVALIDDATA ;
}
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ret = parse_chunks ( s , SEEK_TO_DATA , 0 , 0 ) ;
if ( ret < 0 )
return ret ;
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avio_seek ( wtv - > pb , - 32 , SEEK_CUR ) ;
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timeline_pos = avio_tell ( s - > pb ) ; // save before opening another file
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/* read metadata */
pb = wtvfile_open ( s , root , root_size , table_0_entries_legacy_attrib_le16 ) ;
if ( pb ) {
parse_legacy_attrib ( s , pb ) ;
wtvfile_close ( pb ) ;
}
/* read seek index */
if ( s - > nb_streams ) {
AVStream * st = s - > streams [ 0 ] ;
pb = wtvfile_open ( s , root , root_size , table_0_entries_time_le16 ) ;
if ( pb ) {
while ( 1 ) {
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uint64_t timestamp = avio_rl64 ( pb ) ;
uint64_t frame_nb = avio_rl64 ( pb ) ;
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if ( pb - > eof_reached )
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break ;
ff_add_index_entry ( & wtv - > index_entries , & wtv - > nb_index_entries , & wtv - > index_entries_allocated_size ,
0 , timestamp , frame_nb , 0 , AVINDEX_KEYFRAME ) ;
}
wtvfile_close ( pb ) ;
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if ( wtv - > nb_index_entries ) {
pb = wtvfile_open ( s , root , root_size , timeline_table_0_entries_Events_le16 ) ;
if ( pb ) {
int i ;
while ( 1 ) {
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uint64_t frame_nb = avio_rl64 ( pb ) ;
uint64_t position = avio_rl64 ( pb ) ;
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if ( pb - > eof_reached )
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break ;
for ( i = wtv - > nb_index_entries - 1 ; i > = 0 ; i - - ) {
AVIndexEntry * e = wtv - > index_entries + i ;
if ( frame_nb > e - > size )
break ;
if ( position > e - > pos )
e - > pos = position ;
}
}
wtvfile_close ( pb ) ;
st - > duration = wtv - > index_entries [ wtv - > nb_index_entries - 1 ] . timestamp ;
}
}
}
}
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avio_seek ( s - > pb , timeline_pos , SEEK_SET ) ;
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return 0 ;
}
static int read_packet ( AVFormatContext * s , AVPacket * pkt )
{
WtvContext * wtv = s - > priv_data ;
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AVIOContext * pb = wtv - > pb ;
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int stream_index , len , ret ;
stream_index = parse_chunks ( s , SEEK_TO_DATA , 0 , & len ) ;
if ( stream_index < 0 )
return stream_index ;
ret = av_get_packet ( pb , pkt , len - 32 ) ;
if ( ret < 0 )
return ret ;
pkt - > stream_index = stream_index ;
pkt - > pts = wtv - > pts ;
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avio_skip ( pb , WTV_PAD8 ( len ) - len ) ;
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return 0 ;
}
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static int read_seek ( AVFormatContext * s , int stream_index ,
int64_t ts , int flags )
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{
WtvContext * wtv = s - > priv_data ;
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AVIOContext * pb = wtv - > pb ;
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AVStream * st = s - > streams [ 0 ] ;
int64_t ts_relative ;
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int i ;
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if ( ( flags & AVSEEK_FLAG_FRAME ) | | ( flags & AVSEEK_FLAG_BYTE ) )
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return AVERROR ( ENOSYS ) ;
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/* timestamp adjustment is required because wtv->pts values are absolute,
* whereas AVIndexEntry - > timestamp values are relative to epoch . */
ts_relative = ts ;
if ( wtv - > epoch ! = AV_NOPTS_VALUE )
ts_relative - = wtv - > epoch ;
i = ff_index_search_timestamp ( wtv - > index_entries , wtv - > nb_index_entries , ts_relative , flags ) ;
if ( i < 0 ) {
if ( wtv - > last_valid_pts = = AV_NOPTS_VALUE | | ts < wtv - > last_valid_pts )
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avio_seek ( pb , 0 , SEEK_SET ) ;
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else if ( st - > duration ! = AV_NOPTS_VALUE & & ts_relative > st - > duration & & wtv - > nb_index_entries )
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avio_seek ( pb , wtv - > index_entries [ wtv - > nb_index_entries - 1 ] . pos , SEEK_SET ) ;
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if ( parse_chunks ( s , SEEK_TO_PTS , ts , 0 ) < 0 )
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return AVERROR ( ERANGE ) ;
return 0 ;
}
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wtv - > pts = wtv - > index_entries [ i ] . timestamp ;
if ( wtv - > epoch ! = AV_NOPTS_VALUE )
wtv - > pts + = wtv - > epoch ;
wtv - > last_valid_pts = wtv - > pts ;
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avio_seek ( pb , wtv - > index_entries [ i ] . pos , SEEK_SET ) ;
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return 0 ;
}
static int read_close ( AVFormatContext * s )
{
WtvContext * wtv = s - > priv_data ;
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av_free ( wtv - > index_entries ) ;
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wtvfile_close ( wtv - > pb ) ;
return 0 ;
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}
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AVInputFormat ff_wtv_demuxer = {
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. name = " wtv " ,
. long_name = NULL_IF_CONFIG_SMALL ( " Windows Television (WTV) " ) ,
. priv_data_size = sizeof ( WtvContext ) ,
. read_probe = read_probe ,
. read_header = read_header ,
. read_packet = read_packet ,
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. read_seek = read_seek ,
. read_close = read_close ,
. flags = AVFMT_SHOW_IDS ,
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} ;