/***************************************************************************** * libmp4.c : LibMP4 library for mp4 module for vlc ***************************************************************************** * Copyright (C) 2001-2004 the VideoLAN team * $Id$ * * Author: Laurent Aimar <fenrir@via.ecp.fr> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA. *****************************************************************************/ #include <vlc/vlc.h> #include <stdio.h> #include <stdlib.h> /* malloc(), free() */ #include <vlc_demux.h> #ifdef HAVE_ZLIB_H # include <zlib.h> /* for compressed moov */ #endif #include "libmp4.h" #include "drms.h" /***************************************************************************** * Here are defined some macro to make life simpler but before using it * *look* at the code. * *****************************************************************************/ #define MP4_BOX_HEADERSIZE( p_box ) \ ( 8 + ( p_box->i_shortsize == 1 ? 8 : 0 ) \ + ( p_box->i_type == FOURCC_uuid ? 16 : 0 ) ) #define MP4_GET1BYTE( dst ) \ dst = *p_peek; p_peek++; i_read-- #define MP4_GET2BYTES( dst ) \ dst = GetWBE( p_peek ); p_peek += 2; i_read -= 2 #define MP4_GET3BYTES( dst ) \ dst = Get24bBE( p_peek ); p_peek += 3; i_read -= 3 #define MP4_GET4BYTES( dst ) \ dst = GetDWBE( p_peek ); p_peek += 4; i_read -= 4 #define MP4_GETFOURCC( dst ) \ dst = VLC_FOURCC( p_peek[0], p_peek[1], p_peek[2], p_peek[3] ); \ p_peek += 4; i_read -= 4 #define MP4_GET8BYTES( dst ) \ dst = GetQWBE( p_peek ); p_peek += 8; i_read -= 8 #define MP4_GETVERSIONFLAGS( p_void ) \ MP4_GET1BYTE( p_void->i_version ); \ MP4_GET3BYTES( p_void->i_flags ) #define MP4_GETSTRINGZ( p_str ) \ if( ( i_read > 0 )&&(p_peek[0] ) ) \ { \ p_str = calloc( sizeof( char ), __MIN( strlen( (char*)p_peek ), i_read )+1);\ memcpy( p_str, p_peek, __MIN( strlen( (char*)p_peek ), i_read ) ); \ p_str[__MIN( strlen( (char*)p_peek ), i_read )] = 0; \ p_peek += strlen( (char *)p_str ) + 1; \ i_read -= strlen( (char *)p_str ) + 1; \ } \ else \ { \ p_str = NULL; \ } #define MP4_READBOX_ENTER( MP4_Box_data_TYPE_t ) \ int64_t i_read = p_box->i_size; \ uint8_t *p_peek, *p_buff; \ int i_actually_read; \ if( !( p_peek = p_buff = malloc( i_read ) ) ) \ { \ return( 0 ); \ } \ i_actually_read = stream_Read( p_stream, p_peek, i_read ); \ if( i_actually_read < 0 || (int64_t)i_actually_read < i_read )\ { \ free( p_buff ); \ return( 0 ); \ } \ p_peek += MP4_BOX_HEADERSIZE( p_box ); \ i_read -= MP4_BOX_HEADERSIZE( p_box ); \ if( !( p_box->data.p_data = malloc( sizeof( MP4_Box_data_TYPE_t ) ) ) ) \ { \ free( p_buff ); \ return( 0 ); \ } #define MP4_READBOX_EXIT( i_code ) \ free( p_buff ); \ if( i_read < 0 ) \ { \ msg_Warn( p_stream, "Not enough data" ); \ } \ return( i_code ) /* Some assumptions: * The input method HAVE to be seekable */ static uint32_t Get24bBE( uint8_t *p ) { return( ( p[0] <<16 ) + ( p[1] <<8 ) + p[2] ); } static void GetUUID( UUID_t *p_uuid, uint8_t *p_buff ) { memcpy( p_uuid, p_buff, 16 ); } static void CreateUUID( UUID_t *p_uuid, uint32_t i_fourcc ) { /* made by 0xXXXXXXXX-0011-0010-8000-00aa00389b71 where XXXXXXXX is the fourcc */ /* FIXME implement this */ } /* some functions for mp4 encoding of variables */ static void MP4_ConvertDate2Str( char *psz, uint64_t i_date ) { int i_day; int i_hour; int i_min; int i_sec; /* date begin at 1 jan 1904 */ i_date += ((I64C(1904) * 365) + 17) * 24 * 60 * 60; i_day = i_date / ( 60*60*24); i_hour = ( i_date /( 60*60 ) ) % 60; i_min = ( i_date / 60 ) % 60; i_sec = i_date % 60; sprintf( psz, "%dd-%2.2dh:%2.2dm:%2.2ds", i_day, i_hour, i_min, i_sec ); } /***************************************************************************** * Some prototypes. *****************************************************************************/ static MP4_Box_t *MP4_ReadBox( stream_t *p_stream, MP4_Box_t *p_father ); /***************************************************************************** * MP4_ReadBoxCommon : Load only common parameters for all boxes ***************************************************************************** * p_box need to be an already allocated MP4_Box_t, and all data * will only be peek not read * * RETURN : 0 if it fail, 1 otherwise *****************************************************************************/ int MP4_ReadBoxCommon( stream_t *p_stream, MP4_Box_t *p_box ) { int i_read; uint8_t *p_peek; if( ( ( i_read = stream_Peek( p_stream, &p_peek, 32 ) ) < 8 ) ) { return 0; } p_box->i_pos = stream_Tell( p_stream ); p_box->data.p_data = NULL; p_box->p_father = NULL; p_box->p_first = NULL; p_box->p_last = NULL; p_box->p_next = NULL; MP4_GET4BYTES( p_box->i_shortsize ); MP4_GETFOURCC( p_box->i_type ); /* Now special case */ if( p_box->i_shortsize == 1 ) { /* get the true size on 64 bits */ MP4_GET8BYTES( p_box->i_size ); } else { p_box->i_size = p_box->i_shortsize; /* XXX size of 0 means that the box extends to end of file */ } if( p_box->i_type == FOURCC_uuid ) { /* get extented type on 16 bytes */ GetUUID( &p_box->i_uuid, p_peek ); p_peek += 16; i_read -= 16; } else { CreateUUID( &p_box->i_uuid, p_box->i_type ); } #ifdef MP4_VERBOSE if( p_box->i_size ) { msg_Dbg( p_stream, "found Box: %4.4s size "I64Fd, (char*)&p_box->i_type, p_box->i_size ); } #endif return 1; } /***************************************************************************** * MP4_NextBox : Go to the next box ***************************************************************************** * if p_box == NULL, go to the next box in which we are( at the begining ). *****************************************************************************/ static int MP4_NextBox( stream_t *p_stream, MP4_Box_t *p_box ) { MP4_Box_t box; if( !p_box ) { MP4_ReadBoxCommon( p_stream, &box ); p_box = &box; } if( !p_box->i_size ) { return 2; /* Box with infinite size */ } if( p_box->p_father ) { /* check if it's within p-father */ if( p_box->i_size + p_box->i_pos >= p_box->p_father->i_size + p_box->p_father->i_pos ) { msg_Dbg( p_stream, "out of bound child" ); return 0; /* out of bound */ } } if( stream_Seek( p_stream, p_box->i_size + p_box->i_pos ) ) { return 0; } return 1; } /***************************************************************************** * For all known box a loader is given, * XXX: all common struct have to be already read by MP4_ReadBoxCommon * after called one of theses functions, file position is unknown * you need to call MP4_GotoBox to go where you want *****************************************************************************/ static int MP4_ReadBoxContainerRaw( stream_t *p_stream, MP4_Box_t *p_container ) { MP4_Box_t *p_box; if( stream_Tell( p_stream ) + 8 > (off_t)(p_container->i_pos + p_container->i_size) ) { /* there is no box to load */ return 0; } do { if( ( p_box = MP4_ReadBox( p_stream, p_container ) ) == NULL ) break; /* chain this box with the father and the other at same level */ if( !p_container->p_first ) p_container->p_first = p_box; else p_container->p_last->p_next = p_box; p_container->p_last = p_box; } while( MP4_NextBox( p_stream, p_box ) == 1 ); return 1; } static int MP4_ReadBoxContainer( stream_t *p_stream, MP4_Box_t *p_container ) { if( p_container->i_size <= (size_t)MP4_BOX_HEADERSIZE(p_container ) + 8 ) { /* container is empty, 8 stand for the first header in this box */ return 1; } /* enter box */ stream_Seek( p_stream, p_container->i_pos + MP4_BOX_HEADERSIZE( p_container ) ); return MP4_ReadBoxContainerRaw( p_stream, p_container ); } static void MP4_FreeBox_Common( MP4_Box_t *p_box ) { /* Up to now do nothing */ } static int MP4_ReadBoxSkip( stream_t *p_stream, MP4_Box_t *p_box ) { /* XXX sometime moov is hiden in a free box */ if( p_box->p_father && p_box->p_father->i_type == VLC_FOURCC( 'r', 'o', 'o', 't' ) && p_box->i_type == FOURCC_free ) { uint8_t *p_peek; int i_read; vlc_fourcc_t i_fcc; i_read = stream_Peek( p_stream, &p_peek, 44 ); p_peek += MP4_BOX_HEADERSIZE( p_box ) + 4; i_read -= MP4_BOX_HEADERSIZE( p_box ) + 4; if( i_read >= 8 ) { i_fcc = VLC_FOURCC( p_peek[0], p_peek[1], p_peek[2], p_peek[3] ); if( i_fcc == FOURCC_cmov || i_fcc == FOURCC_mvhd ) { msg_Warn( p_stream, "detected moov hidden in a free box ..." ); p_box->i_type = FOURCC_foov; return MP4_ReadBoxContainer( p_stream, p_box ); } } } /* Nothing to do */ #ifdef MP4_VERBOSE msg_Dbg( p_stream, "skip box: \"%4.4s\"", (char*)&p_box->i_type ); #endif return 1; } static int MP4_ReadBox_ftyp( stream_t *p_stream, MP4_Box_t *p_box ) { MP4_READBOX_ENTER( MP4_Box_data_ftyp_t ); MP4_GETFOURCC( p_box->data.p_ftyp->i_major_brand ); MP4_GET4BYTES( p_box->data.p_ftyp->i_minor_version ); if( ( p_box->data.p_ftyp->i_compatible_brands_count = i_read / 4 ) ) { unsigned int i; p_box->data.p_ftyp->i_compatible_brands = calloc( p_box->data.p_ftyp->i_compatible_brands_count, sizeof(uint32_t)); for( i =0; i < p_box->data.p_ftyp->i_compatible_brands_count; i++ ) { MP4_GETFOURCC( p_box->data.p_ftyp->i_compatible_brands[i] ); } } else { p_box->data.p_ftyp->i_compatible_brands = NULL; } MP4_READBOX_EXIT( 1 ); } static void MP4_FreeBox_ftyp( MP4_Box_t *p_box ) { FREENULL( p_box->data.p_ftyp->i_compatible_brands ); } static int MP4_ReadBox_mvhd( stream_t *p_stream, MP4_Box_t *p_box ) { unsigned int i; #ifdef MP4_VERBOSE char s_creation_time[128]; char s_modification_time[128]; char s_duration[128]; #endif MP4_READBOX_ENTER( MP4_Box_data_mvhd_t ); MP4_GETVERSIONFLAGS( p_box->data.p_mvhd ); if( p_box->data.p_mvhd->i_version ) { MP4_GET8BYTES( p_box->data.p_mvhd->i_creation_time ); MP4_GET8BYTES( p_box->data.p_mvhd->i_modification_time ); MP4_GET4BYTES( p_box->data.p_mvhd->i_timescale ); MP4_GET8BYTES( p_box->data.p_mvhd->i_duration ); } else { MP4_GET4BYTES( p_box->data.p_mvhd->i_creation_time ); MP4_GET4BYTES( p_box->data.p_mvhd->i_modification_time ); MP4_GET4BYTES( p_box->data.p_mvhd->i_timescale ); MP4_GET4BYTES( p_box->data.p_mvhd->i_duration ); } MP4_GET4BYTES( p_box->data.p_mvhd->i_rate ); MP4_GET2BYTES( p_box->data.p_mvhd->i_volume ); MP4_GET2BYTES( p_box->data.p_mvhd->i_reserved1 ); for( i = 0; i < 2; i++ ) { MP4_GET4BYTES( p_box->data.p_mvhd->i_reserved2[i] ); } for( i = 0; i < 9; i++ ) { MP4_GET4BYTES( p_box->data.p_mvhd->i_matrix[i] ); } for( i = 0; i < 6; i++ ) { MP4_GET4BYTES( p_box->data.p_mvhd->i_predefined[i] ); } MP4_GET4BYTES( p_box->data.p_mvhd->i_next_track_id ); #ifdef MP4_VERBOSE MP4_ConvertDate2Str( s_creation_time, p_box->data.p_mvhd->i_creation_time ); MP4_ConvertDate2Str( s_modification_time, p_box->data.p_mvhd->i_modification_time ); if( p_box->data.p_mvhd->i_rate ) { MP4_ConvertDate2Str( s_duration, p_box->data.p_mvhd->i_duration / p_box->data.p_mvhd->i_rate ); } else { s_duration[0] = 0; } msg_Dbg( p_stream, "read box: \"mvhd\" creation %s modification %s time scale %d duration %s rate %f volume %f next track id %d", s_creation_time, s_modification_time, (uint32_t)p_box->data.p_mvhd->i_timescale, s_duration, (float)p_box->data.p_mvhd->i_rate / (1<<16 ), (float)p_box->data.p_mvhd->i_volume / 256 , (uint32_t)p_box->data.p_mvhd->i_next_track_id ); #endif MP4_READBOX_EXIT( 1 ); } static int MP4_ReadBox_tkhd( stream_t *p_stream, MP4_Box_t *p_box ) { unsigned int i; #ifdef MP4_VERBOSE char s_creation_time[128]; char s_modification_time[128]; char s_duration[128]; #endif MP4_READBOX_ENTER( MP4_Box_data_tkhd_t ); MP4_GETVERSIONFLAGS( p_box->data.p_tkhd ); if( p_box->data.p_tkhd->i_version ) { MP4_GET8BYTES( p_box->data.p_tkhd->i_creation_time ); MP4_GET8BYTES( p_box->data.p_tkhd->i_modification_time ); MP4_GET4BYTES( p_box->data.p_tkhd->i_track_ID ); MP4_GET4BYTES( p_box->data.p_tkhd->i_reserved ); MP4_GET8BYTES( p_box->data.p_tkhd->i_duration ); } else { MP4_GET4BYTES( p_box->data.p_tkhd->i_creation_time ); MP4_GET4BYTES( p_box->data.p_tkhd->i_modification_time ); MP4_GET4BYTES( p_box->data.p_tkhd->i_track_ID ); MP4_GET4BYTES( p_box->data.p_tkhd->i_reserved ); MP4_GET4BYTES( p_box->data.p_tkhd->i_duration ); } for( i = 0; i < 2; i++ ) { MP4_GET4BYTES( p_box->data.p_tkhd->i_reserved2[i] ); } MP4_GET2BYTES( p_box->data.p_tkhd->i_layer ); MP4_GET2BYTES( p_box->data.p_tkhd->i_predefined ); MP4_GET2BYTES( p_box->data.p_tkhd->i_volume ); MP4_GET2BYTES( p_box->data.p_tkhd->i_reserved3 ); for( i = 0; i < 9; i++ ) { MP4_GET4BYTES( p_box->data.p_tkhd->i_matrix[i] ); } MP4_GET4BYTES( p_box->data.p_tkhd->i_width ); MP4_GET4BYTES( p_box->data.p_tkhd->i_height ); #ifdef MP4_VERBOSE MP4_ConvertDate2Str( s_creation_time, p_box->data.p_mvhd->i_creation_time ); MP4_ConvertDate2Str( s_modification_time, p_box->data.p_mvhd->i_modification_time ); MP4_ConvertDate2Str( s_duration, p_box->data.p_mvhd->i_duration ); msg_Dbg( p_stream, "read box: \"tkhd\" creation %s modification %s duration %s track ID %d layer %d volume %f width %f height %f", s_creation_time, s_modification_time, s_duration, p_box->data.p_tkhd->i_track_ID, p_box->data.p_tkhd->i_layer, (float)p_box->data.p_tkhd->i_volume / 256 , (float)p_box->data.p_tkhd->i_width / 65536, (float)p_box->data.p_tkhd->i_height / 65536 ); #endif MP4_READBOX_EXIT( 1 ); } static int MP4_ReadBox_mdhd( stream_t *p_stream, MP4_Box_t *p_box ) { unsigned int i; uint16_t i_language; #ifdef MP4_VERBOSE char s_creation_time[128]; char s_modification_time[128]; char s_duration[128]; #endif MP4_READBOX_ENTER( MP4_Box_data_mdhd_t ); MP4_GETVERSIONFLAGS( p_box->data.p_mdhd ); if( p_box->data.p_mdhd->i_version ) { MP4_GET8BYTES( p_box->data.p_mdhd->i_creation_time ); MP4_GET8BYTES( p_box->data.p_mdhd->i_modification_time ); MP4_GET4BYTES( p_box->data.p_mdhd->i_timescale ); MP4_GET8BYTES( p_box->data.p_mdhd->i_duration ); } else { MP4_GET4BYTES( p_box->data.p_mdhd->i_creation_time ); MP4_GET4BYTES( p_box->data.p_mdhd->i_modification_time ); MP4_GET4BYTES( p_box->data.p_mdhd->i_timescale ); MP4_GET4BYTES( p_box->data.p_mdhd->i_duration ); } i_language = GetWBE( p_peek ); for( i = 0; i < 3; i++ ) { p_box->data.p_mdhd->i_language[i] = ( ( i_language >> ( (2-i)*5 ) )&0x1f ) + 0x60; } MP4_GET2BYTES( p_box->data.p_mdhd->i_predefined ); #ifdef MP4_VERBOSE MP4_ConvertDate2Str( s_creation_time, p_box->data.p_mdhd->i_creation_time ); MP4_ConvertDate2Str( s_modification_time, p_box->data.p_mdhd->i_modification_time ); MP4_ConvertDate2Str( s_duration, p_box->data.p_mdhd->i_duration ); msg_Dbg( p_stream, "read box: \"mdhd\" creation %s modification %s time scale %d duration %s language %c%c%c", s_creation_time, s_modification_time, (uint32_t)p_box->data.p_mdhd->i_timescale, s_duration, p_box->data.p_mdhd->i_language[0], p_box->data.p_mdhd->i_language[1], p_box->data.p_mdhd->i_language[2] ); #endif MP4_READBOX_EXIT( 1 ); } static int MP4_ReadBox_hdlr( stream_t *p_stream, MP4_Box_t *p_box ) { int32_t i_reserved; MP4_READBOX_ENTER( MP4_Box_data_hdlr_t ); MP4_GETVERSIONFLAGS( p_box->data.p_hdlr ); MP4_GETFOURCC( p_box->data.p_hdlr->i_predefined ); MP4_GETFOURCC( p_box->data.p_hdlr->i_handler_type ); MP4_GET4BYTES( i_reserved ); MP4_GET4BYTES( i_reserved ); MP4_GET4BYTES( i_reserved ); p_box->data.p_hdlr->psz_name = NULL; if( i_read > 0 ) { p_box->data.p_hdlr->psz_name = calloc( sizeof( char ), i_read + 1 ); /* Yes, I love .mp4 :( */ if( p_box->data.p_hdlr->i_predefined == VLC_FOURCC( 'm', 'h', 'l', 'r' ) ) { uint8_t i_len; int i_copy; MP4_GET1BYTE( i_len ); i_copy = __MIN( i_read, i_len ); memcpy( p_box->data.p_hdlr->psz_name, p_peek, i_copy ); p_box->data.p_hdlr->psz_name[i_copy] = '\0'; } else { memcpy( p_box->data.p_hdlr->psz_name, p_peek, i_read ); p_box->data.p_hdlr->psz_name[i_read] = '\0'; } } #ifdef MP4_VERBOSE msg_Dbg( p_stream, "read box: \"hdlr\" handler type %4.4s name %s", (char*)&p_box->data.p_hdlr->i_handler_type, p_box->data.p_hdlr->psz_name ); #endif MP4_READBOX_EXIT( 1 ); } static void MP4_FreeBox_hdlr( MP4_Box_t *p_box ) { FREENULL( p_box->data.p_hdlr->psz_name ); } static int MP4_ReadBox_vmhd( stream_t *p_stream, MP4_Box_t *p_box ) { unsigned int i; MP4_READBOX_ENTER( MP4_Box_data_vmhd_t ); MP4_GETVERSIONFLAGS( p_box->data.p_vmhd ); MP4_GET2BYTES( p_box->data.p_vmhd->i_graphics_mode ); for( i = 0; i < 3; i++ ) { MP4_GET2BYTES( p_box->data.p_vmhd->i_opcolor[i] ); } #ifdef MP4_VERBOSE msg_Dbg( p_stream, "read box: \"vmhd\" graphics-mode %d opcolor (%d, %d, %d)", p_box->data.p_vmhd->i_graphics_mode, p_box->data.p_vmhd->i_opcolor[0], p_box->data.p_vmhd->i_opcolor[1], p_box->data.p_vmhd->i_opcolor[2] ); #endif MP4_READBOX_EXIT( 1 ); } static int MP4_ReadBox_smhd( stream_t *p_stream, MP4_Box_t *p_box ) { MP4_READBOX_ENTER( MP4_Box_data_smhd_t ); MP4_GETVERSIONFLAGS( p_box->data.p_smhd ); MP4_GET2BYTES( p_box->data.p_smhd->i_balance ); MP4_GET2BYTES( p_box->data.p_smhd->i_reserved ); #ifdef MP4_VERBOSE msg_Dbg( p_stream, "read box: \"smhd\" balance %f", (float)p_box->data.p_smhd->i_balance / 256 ); #endif MP4_READBOX_EXIT( 1 ); } static int MP4_ReadBox_hmhd( stream_t *p_stream, MP4_Box_t *p_box ) { MP4_READBOX_ENTER( MP4_Box_data_hmhd_t ); MP4_GETVERSIONFLAGS( p_box->data.p_hmhd ); MP4_GET2BYTES( p_box->data.p_hmhd->i_max_PDU_size ); MP4_GET2BYTES( p_box->data.p_hmhd->i_avg_PDU_size ); MP4_GET4BYTES( p_box->data.p_hmhd->i_max_bitrate ); MP4_GET4BYTES( p_box->data.p_hmhd->i_avg_bitrate ); MP4_GET4BYTES( p_box->data.p_hmhd->i_reserved ); #ifdef MP4_VERBOSE msg_Dbg( p_stream, "read box: \"hmhd\" maxPDU-size %d avgPDU-size %d max-bitrate %d avg-bitrate %d", p_box->data.p_hmhd->i_max_PDU_size, p_box->data.p_hmhd->i_avg_PDU_size, p_box->data.p_hmhd->i_max_bitrate, p_box->data.p_hmhd->i_avg_bitrate ); #endif MP4_READBOX_EXIT( 1 ); } static int MP4_ReadBox_url( stream_t *p_stream, MP4_Box_t *p_box ) { MP4_READBOX_ENTER( MP4_Box_data_url_t ); MP4_GETVERSIONFLAGS( p_box->data.p_url ); MP4_GETSTRINGZ( p_box->data.p_url->psz_location ); #ifdef MP4_VERBOSE msg_Dbg( p_stream, "read box: \"url\" url: %s", p_box->data.p_url->psz_location ); #endif MP4_READBOX_EXIT( 1 ); } static void MP4_FreeBox_url( MP4_Box_t *p_box ) { FREENULL( p_box->data.p_url->psz_location ) } static int MP4_ReadBox_urn( stream_t *p_stream, MP4_Box_t *p_box ) { MP4_READBOX_ENTER( MP4_Box_data_urn_t ); MP4_GETVERSIONFLAGS( p_box->data.p_urn ); MP4_GETSTRINGZ( p_box->data.p_urn->psz_name ); MP4_GETSTRINGZ( p_box->data.p_urn->psz_location ); #ifdef MP4_VERBOSE msg_Dbg( p_stream, "read box: \"urn\" name %s location %s", p_box->data.p_urn->psz_name, p_box->data.p_urn->psz_location ); #endif MP4_READBOX_EXIT( 1 ); } static void MP4_FreeBox_urn( MP4_Box_t *p_box ) { FREENULL( p_box->data.p_urn->psz_name ); FREENULL( p_box->data.p_urn->psz_location ); } static int MP4_ReadBox_dref( stream_t *p_stream, MP4_Box_t *p_box ) { MP4_READBOX_ENTER( MP4_Box_data_dref_t ); MP4_GETVERSIONFLAGS( p_box->data.p_dref ); MP4_GET4BYTES( p_box->data.p_dref->i_entry_count ); stream_Seek( p_stream, p_box->i_pos + MP4_BOX_HEADERSIZE( p_box ) + 8 ); MP4_ReadBoxContainerRaw( p_stream, p_box ); #ifdef MP4_VERBOSE msg_Dbg( p_stream, "read box: \"dref\" entry-count %d", p_box->data.p_dref->i_entry_count ); #endif MP4_READBOX_EXIT( 1 ); } static int MP4_ReadBox_stts( stream_t *p_stream, MP4_Box_t *p_box ) { unsigned int i; MP4_READBOX_ENTER( MP4_Box_data_stts_t ); MP4_GETVERSIONFLAGS( p_box->data.p_stts ); MP4_GET4BYTES( p_box->data.p_stts->i_entry_count ); p_box->data.p_stts->i_sample_count = calloc( sizeof( uint32_t ), p_box->data.p_stts->i_entry_count ); p_box->data.p_stts->i_sample_delta = calloc( sizeof( uint32_t ), p_box->data.p_stts->i_entry_count ); for( i = 0; (i < p_box->data.p_stts->i_entry_count )&&( i_read >=8 ); i++ ) { MP4_GET4BYTES( p_box->data.p_stts->i_sample_count[i] ); MP4_GET4BYTES( p_box->data.p_stts->i_sample_delta[i] ); } #ifdef MP4_VERBOSE msg_Dbg( p_stream, "read box: \"stts\" entry-count %d", p_box->data.p_stts->i_entry_count ); #endif MP4_READBOX_EXIT( 1 ); } static void MP4_FreeBox_stts( MP4_Box_t *p_box ) { FREENULL( p_box->data.p_stts->i_sample_count ); FREENULL( p_box->data.p_stts->i_sample_delta ); } static int MP4_ReadBox_ctts( stream_t *p_stream, MP4_Box_t *p_box ) { unsigned int i; MP4_READBOX_ENTER( MP4_Box_data_ctts_t ); MP4_GETVERSIONFLAGS( p_box->data.p_ctts ); MP4_GET4BYTES( p_box->data.p_ctts->i_entry_count ); p_box->data.p_ctts->i_sample_count = calloc( sizeof( uint32_t ), p_box->data.p_ctts->i_entry_count ); p_box->data.p_ctts->i_sample_offset = calloc( sizeof( uint32_t ), p_box->data.p_ctts->i_entry_count ); for( i = 0; (i < p_box->data.p_ctts->i_entry_count )&&( i_read >=8 ); i++ ) { MP4_GET4BYTES( p_box->data.p_ctts->i_sample_count[i] ); MP4_GET4BYTES( p_box->data.p_ctts->i_sample_offset[i] ); } #ifdef MP4_VERBOSE msg_Dbg( p_stream, "read box: \"ctts\" entry-count %d", p_box->data.p_ctts->i_entry_count ); #endif MP4_READBOX_EXIT( 1 ); } static void MP4_FreeBox_ctts( MP4_Box_t *p_box ) { FREENULL( p_box->data.p_ctts->i_sample_count ); FREENULL( p_box->data.p_ctts->i_sample_offset ); } static int MP4_ReadLengthDescriptor( uint8_t **pp_peek, uint64_t *i_read ) { unsigned int i_b; unsigned int i_len = 0; do { i_b = **pp_peek; (*pp_peek)++; (*i_read)--; i_len = ( i_len << 7 ) + ( i_b&0x7f ); } while( i_b&0x80 ); return( i_len ); } static int MP4_ReadBox_esds( stream_t *p_stream, MP4_Box_t *p_box ) { #define es_descriptor p_box->data.p_esds->es_descriptor unsigned int i_len; unsigned int i_flags; unsigned int i_type; MP4_READBOX_ENTER( MP4_Box_data_esds_t ); MP4_GETVERSIONFLAGS( p_box->data.p_esds ); MP4_GET1BYTE( i_type ); if( i_type == 0x03 ) /* MP4ESDescrTag */ { i_len = MP4_ReadLengthDescriptor( &p_peek, &i_read ); #ifdef MP4_VERBOSE msg_Dbg( p_stream, "found esds MPEG4ESDescr (%dBytes)", i_len ); #endif MP4_GET2BYTES( es_descriptor.i_ES_ID ); MP4_GET1BYTE( i_flags ); es_descriptor.b_stream_dependence = ( (i_flags&0x80) != 0); es_descriptor.b_url = ( (i_flags&0x40) != 0); es_descriptor.b_OCRstream = ( (i_flags&0x20) != 0); es_descriptor.i_stream_priority = i_flags&0x1f; if( es_descriptor.b_stream_dependence ) { MP4_GET2BYTES( es_descriptor.i_depend_on_ES_ID ); } if( es_descriptor.b_url ) { unsigned int i_len; MP4_GET1BYTE( i_len ); es_descriptor.psz_URL = calloc( sizeof(char), i_len + 1 ); memcpy( es_descriptor.psz_URL, p_peek, i_len ); es_descriptor.psz_URL[i_len] = 0; p_peek += i_len; i_read -= i_len; } else { es_descriptor.psz_URL = NULL; } if( es_descriptor.b_OCRstream ) { MP4_GET2BYTES( es_descriptor.i_OCR_ES_ID ); } MP4_GET1BYTE( i_type ); /* get next type */ } if( i_type != 0x04)/* MP4DecConfigDescrTag */ { es_descriptor.p_decConfigDescr = NULL; MP4_READBOX_EXIT( 1 ); /* rest isn't interesting up to now */ } i_len = MP4_ReadLengthDescriptor( &p_peek, &i_read ); #ifdef MP4_VERBOSE msg_Dbg( p_stream, "found esds MP4DecConfigDescr (%dBytes)", i_len ); #endif es_descriptor.p_decConfigDescr = malloc( sizeof( MP4_descriptor_decoder_config_t )); MP4_GET1BYTE( es_descriptor.p_decConfigDescr->i_objectTypeIndication ); MP4_GET1BYTE( i_flags ); es_descriptor.p_decConfigDescr->i_streamType = i_flags >> 2; es_descriptor.p_decConfigDescr->b_upStream = ( i_flags >> 1 )&0x01; MP4_GET3BYTES( es_descriptor.p_decConfigDescr->i_buffer_sizeDB ); MP4_GET4BYTES( es_descriptor.p_decConfigDescr->i_max_bitrate ); MP4_GET4BYTES( es_descriptor.p_decConfigDescr->i_avg_bitrate ); MP4_GET1BYTE( i_type ); if( i_type != 0x05 )/* MP4DecSpecificDescrTag */ { es_descriptor.p_decConfigDescr->i_decoder_specific_info_len = 0; es_descriptor.p_decConfigDescr->p_decoder_specific_info = NULL; MP4_READBOX_EXIT( 1 ); } i_len = MP4_ReadLengthDescriptor( &p_peek, &i_read ); #ifdef MP4_VERBOSE msg_Dbg( p_stream, "found esds MP4DecSpecificDescr (%dBytes)", i_len ); #endif es_descriptor.p_decConfigDescr->i_decoder_specific_info_len = i_len; es_descriptor.p_decConfigDescr->p_decoder_specific_info = malloc( i_len ); memcpy( es_descriptor.p_decConfigDescr->p_decoder_specific_info, p_peek, i_len ); MP4_READBOX_EXIT( 1 ); #undef es_descriptor } static void MP4_FreeBox_esds( MP4_Box_t *p_box ) { FREENULL( p_box->data.p_esds->es_descriptor.psz_URL ); if( p_box->data.p_esds->es_descriptor.p_decConfigDescr ) { FREENULL( p_box->data.p_esds->es_descriptor.p_decConfigDescr->p_decoder_specific_info ); } FREENULL( p_box->data.p_esds->es_descriptor.p_decConfigDescr ); } static int MP4_ReadBox_avcC( stream_t *p_stream, MP4_Box_t *p_box ) { MP4_Box_data_avcC_t *p_avcC; int i; MP4_READBOX_ENTER( MP4_Box_data_avcC_t ); p_avcC = p_box->data.p_avcC; p_avcC->i_avcC = i_read; if( p_avcC->i_avcC > 0 ) { p_avcC->p_avcC = malloc( p_avcC->i_avcC ); memcpy( p_avcC->p_avcC, p_peek, i_read ); } MP4_GET1BYTE( p_avcC->i_version ); MP4_GET1BYTE( p_avcC->i_profile ); MP4_GET1BYTE( p_avcC->i_profile_compatibility ); MP4_GET1BYTE( p_avcC->i_level ); MP4_GET1BYTE( p_avcC->i_reserved1 ); p_avcC->i_length_size = (p_avcC->i_reserved1&0x03) + 1; p_avcC->i_reserved1 >>= 2; MP4_GET1BYTE( p_avcC->i_reserved2 ); p_avcC->i_sps = p_avcC->i_reserved2&0x1f; p_avcC->i_reserved2 >>= 5; if( p_avcC->i_sps > 0 ) { p_avcC->i_sps_length = malloc( p_avcC->i_sps * sizeof( uint16_t ) ); p_avcC->sps = malloc( p_avcC->i_sps * sizeof( uint8_t* ) ); for( i = 0; i < p_avcC->i_sps; i++ ) { MP4_GET2BYTES( p_avcC->i_sps_length[i] ); p_avcC->sps[i] = malloc( p_avcC->i_sps_length[i] ); memcpy( p_avcC->sps[i], p_peek, p_avcC->i_sps_length[i] ); p_peek += p_avcC->i_sps_length[i]; i_read -= p_avcC->i_sps_length[i]; } } MP4_GET1BYTE( p_avcC->i_pps ); if( p_avcC->i_pps > 0 ) { p_avcC->i_pps_length = malloc( p_avcC->i_pps * sizeof( uint16_t ) ); p_avcC->pps = malloc( p_avcC->i_pps * sizeof( uint8_t* ) ); for( i = 0; i < p_avcC->i_pps; i++ ) { MP4_GET2BYTES( p_avcC->i_pps_length[i] ); p_avcC->pps[i] = malloc( p_avcC->i_pps_length[i] ); memcpy( p_avcC->pps[i], p_peek, p_avcC->i_pps_length[i] ); p_peek += p_avcC->i_pps_length[i]; i_read -= p_avcC->i_pps_length[i]; } } #ifdef MP4_VERBOSE msg_Dbg( p_stream, "read box: \"avcC\" version=%d profile=0x%x level=0x%x length size=%d sps=%d pps=%d", p_avcC->i_version, p_avcC->i_profile, p_avcC->i_level, p_avcC->i_length_size, p_avcC->i_sps, p_avcC->i_pps ); for( i = 0; i < p_avcC->i_sps; i++ ) { msg_Dbg( p_stream, " - sps[%d] length=%d", i, p_avcC->i_sps_length[i] ); } for( i = 0; i < p_avcC->i_pps; i++ ) { msg_Dbg( p_stream, " - pps[%d] length=%d", i, p_avcC->i_pps_length[i] ); } #endif MP4_READBOX_EXIT( 1 ); } static void MP4_FreeBox_avcC( MP4_Box_t *p_box ) { MP4_Box_data_avcC_t *p_avcC = p_box->data.p_avcC; int i; if( p_avcC->i_avcC > 0 ) FREENULL( p_avcC->p_avcC ); for( i = 0; i < p_avcC->i_sps; i++ ) { FREENULL( p_avcC->sps[i] ); } for( i = 0; i < p_avcC->i_pps; i++ ) { FREENULL( p_avcC->pps[i] ); } if( p_avcC->i_sps > 0 ) FREENULL( p_avcC->sps ); if( p_avcC->i_sps > 0 ) FREENULL( p_avcC->i_sps_length ); if( p_avcC->i_pps > 0 ) FREENULL( p_avcC->pps ); if( p_avcC->i_pps > 0 ) FREENULL( p_avcC->i_pps_length ); } static int MP4_ReadBox_sample_soun( stream_t *p_stream, MP4_Box_t *p_box ) { unsigned int i; MP4_READBOX_ENTER( MP4_Box_data_sample_soun_t ); p_box->data.p_sample_soun->p_qt_description = NULL; /* Sanity check needed because the "wave" box does also contain an * "mp4a" box that we don't understand. */ if( i_read < 28 ) { i_read -= 30; MP4_READBOX_EXIT( 1 ); } for( i = 0; i < 6 ; i++ ) { MP4_GET1BYTE( p_box->data.p_sample_soun->i_reserved1[i] ); } MP4_GET2BYTES( p_box->data.p_sample_soun->i_data_reference_index ); /* * XXX hack -> produce a copy of the nearly complete chunk */ if( i_read > 0 ) { p_box->data.p_sample_soun->i_qt_description = i_read; p_box->data.p_sample_soun->p_qt_description = malloc( i_read ); memcpy( p_box->data.p_sample_soun->p_qt_description, p_peek, i_read ); } else { p_box->data.p_sample_soun->i_qt_description = 0; p_box->data.p_sample_soun->p_qt_description = NULL; } MP4_GET2BYTES( p_box->data.p_sample_soun->i_qt_version ); MP4_GET2BYTES( p_box->data.p_sample_soun->i_qt_revision_level ); MP4_GET4BYTES( p_box->data.p_sample_soun->i_qt_vendor ); MP4_GET2BYTES( p_box->data.p_sample_soun->i_channelcount ); MP4_GET2BYTES( p_box->data.p_sample_soun->i_samplesize ); MP4_GET2BYTES( p_box->data.p_sample_soun->i_predefined ); MP4_GET2BYTES( p_box->data.p_sample_soun->i_reserved3 ); MP4_GET2BYTES( p_box->data.p_sample_soun->i_sampleratehi ); MP4_GET2BYTES( p_box->data.p_sample_soun->i_sampleratelo ); if( p_box->data.p_sample_soun->i_qt_version == 1 && i_read >= 16 ) { /* SoundDescriptionV1 */ MP4_GET4BYTES( p_box->data.p_sample_soun->i_sample_per_packet ); MP4_GET4BYTES( p_box->data.p_sample_soun->i_bytes_per_packet ); MP4_GET4BYTES( p_box->data.p_sample_soun->i_bytes_per_frame ); MP4_GET4BYTES( p_box->data.p_sample_soun->i_bytes_per_sample ); #ifdef MP4_VERBOSE msg_Dbg( p_stream, "read box: \"soun\" qt3+ sample/packet=%d bytes/packet=%d " "bytes/frame=%d bytes/sample=%d", p_box->data.p_sample_soun->i_sample_per_packet, p_box->data.p_sample_soun->i_bytes_per_packet, p_box->data.p_sample_soun->i_bytes_per_frame, p_box->data.p_sample_soun->i_bytes_per_sample ); #endif stream_Seek( p_stream, p_box->i_pos + MP4_BOX_HEADERSIZE( p_box ) + 44 ); } else if( p_box->data.p_sample_soun->i_qt_version == 2 && i_read >= 36 ) { /* SoundDescriptionV2 */ double f_sample_rate; int64_t dummy; uint32_t i_channel; MP4_GET4BYTES( p_box->data.p_sample_soun->i_sample_per_packet ); MP4_GET8BYTES( dummy ); memcpy( &f_sample_rate, &dummy, 8 ); msg_Dbg( p_stream, "read box: %f Hz", f_sample_rate ); p_box->data.p_sample_soun->i_sampleratehi = (int)f_sample_rate % 65536; p_box->data.p_sample_soun->i_sampleratelo = f_sample_rate / 65536; MP4_GET4BYTES( i_channel ); p_box->data.p_sample_soun->i_channelcount = i_channel; #ifdef MP4_VERBOSE msg_Dbg( p_stream, "read box: \"soun\" V2" ); #endif stream_Seek( p_stream, p_box->i_pos + MP4_BOX_HEADERSIZE( p_box ) + 28 + 36 ); } else { p_box->data.p_sample_soun->i_sample_per_packet = 0; p_box->data.p_sample_soun->i_bytes_per_packet = 0; p_box->data.p_sample_soun->i_bytes_per_frame = 0; p_box->data.p_sample_soun->i_bytes_per_sample = 0; msg_Dbg( p_stream, "read box: \"soun\" mp4 or qt1/2 (rest="I64Fd")", i_read ); stream_Seek( p_stream, p_box->i_pos + MP4_BOX_HEADERSIZE( p_box ) + 28 ); } if( p_box->i_type == FOURCC_drms ) { p_box->data.p_sample_soun->p_drms = drms_alloc( p_stream->p_libvlc->psz_homedir ); if( p_box->data.p_sample_soun->p_drms == NULL ) { msg_Err( p_stream, "drms_alloc() failed" ); } } if( p_box->i_type == FOURCC_samr || p_box->i_type == FOURCC_sawb ) { /* Ignore channelcount for AMR (3gpp AMRSpecificBox) */ p_box->data.p_sample_soun->i_channelcount = 1; } if( p_box->i_type == FOURCC_alac ) { if( p_box->data.p_sample_soun->p_qt_description ) free( p_box->data.p_sample_soun->p_qt_description ); p_box->data.p_sample_soun->p_qt_description = malloc( i_read ); p_box->data.p_sample_soun->i_qt_description = i_read; memcpy( p_box->data.p_sample_soun->p_qt_description, p_peek, i_read ); } else { MP4_ReadBoxContainerRaw( p_stream, p_box ); /* esds */ } #ifdef MP4_VERBOSE msg_Dbg( p_stream, "read box: \"soun\" in stsd channel %d " "sample size %d sample rate %f", p_box->data.p_sample_soun->i_channelcount, p_box->data.p_sample_soun->i_samplesize, (float)p_box->data.p_sample_soun->i_sampleratehi + (float)p_box->data.p_sample_soun->i_sampleratelo / 65536 ); #endif MP4_READBOX_EXIT( 1 ); } static void MP4_FreeBox_sample_soun( MP4_Box_t *p_box ) { FREENULL( p_box->data.p_sample_soun->p_qt_description ); if( p_box->i_type == FOURCC_drms ) { if( p_box->data.p_sample_soun->p_drms ) { drms_free( p_box->data.p_sample_soun->p_drms ); } } } int MP4_ReadBox_sample_vide( stream_t *p_stream, MP4_Box_t *p_box ) { unsigned int i; MP4_READBOX_ENTER( MP4_Box_data_sample_vide_t ); for( i = 0; i < 6 ; i++ ) { MP4_GET1BYTE( p_box->data.p_sample_vide->i_reserved1[i] ); } MP4_GET2BYTES( p_box->data.p_sample_vide->i_data_reference_index ); /* * XXX hack -> produce a copy of the nearly complete chunk */ if( i_read > 0 ) { p_box->data.p_sample_vide->i_qt_image_description = i_read; p_box->data.p_sample_vide->p_qt_image_description = malloc( i_read ); memcpy( p_box->data.p_sample_vide->p_qt_image_description, p_peek, i_read ); } else { p_box->data.p_sample_vide->i_qt_image_description = 0; p_box->data.p_sample_vide->p_qt_image_description = NULL; } MP4_GET2BYTES( p_box->data.p_sample_vide->i_qt_version ); MP4_GET2BYTES( p_box->data.p_sample_vide->i_qt_revision_level ); MP4_GET4BYTES( p_box->data.p_sample_vide->i_qt_vendor ); MP4_GET4BYTES( p_box->data.p_sample_vide->i_qt_temporal_quality ); MP4_GET4BYTES( p_box->data.p_sample_vide->i_qt_spatial_quality ); MP4_GET2BYTES( p_box->data.p_sample_vide->i_width ); MP4_GET2BYTES( p_box->data.p_sample_vide->i_height ); MP4_GET4BYTES( p_box->data.p_sample_vide->i_horizresolution ); MP4_GET4BYTES( p_box->data.p_sample_vide->i_vertresolution ); MP4_GET4BYTES( p_box->data.p_sample_vide->i_qt_data_size ); MP4_GET2BYTES( p_box->data.p_sample_vide->i_qt_frame_count ); memcpy( &p_box->data.p_sample_vide->i_compressorname, p_peek, 32 ); p_peek += 32; i_read -= 32; MP4_GET2BYTES( p_box->data.p_sample_vide->i_depth ); MP4_GET2BYTES( p_box->data.p_sample_vide->i_qt_color_table ); stream_Seek( p_stream, p_box->i_pos + MP4_BOX_HEADERSIZE( p_box ) + 78); MP4_ReadBoxContainerRaw( p_stream, p_box ); #ifdef MP4_VERBOSE msg_Dbg( p_stream, "read box: \"vide\" in stsd %dx%d depth %d", p_box->data.p_sample_vide->i_width, p_box->data.p_sample_vide->i_height, p_box->data.p_sample_vide->i_depth ); #endif MP4_READBOX_EXIT( 1 ); } void MP4_FreeBox_sample_vide( MP4_Box_t *p_box ) { FREENULL( p_box->data.p_sample_vide->p_qt_image_description ); } static int MP4_ReadBox_sample_mp4s( stream_t *p_stream, MP4_Box_t *p_box ) { stream_Seek( p_stream, p_box->i_pos + MP4_BOX_HEADERSIZE( p_box ) + 8 ); MP4_ReadBoxContainerRaw( p_stream, p_box ); return 1; } static int MP4_ReadBox_sample_text( stream_t *p_stream, MP4_Box_t *p_box ) { int32_t t; MP4_READBOX_ENTER( MP4_Box_data_sample_text_t ); MP4_GET4BYTES( p_box->data.p_sample_text->i_reserved1 ); MP4_GET2BYTES( p_box->data.p_sample_text->i_reserved2 ); MP4_GET2BYTES( p_box->data.p_sample_text->i_data_reference_index ); MP4_GET4BYTES( p_box->data.p_sample_text->i_display_flags ); MP4_GET4BYTES( t ); switch( t ) { /* FIXME search right signification */ case 1: // Center p_box->data.p_sample_text->i_justification_horizontal = 1; p_box->data.p_sample_text->i_justification_vertical = 1; break; case -1: // Flush Right p_box->data.p_sample_text->i_justification_horizontal = -1; p_box->data.p_sample_text->i_justification_vertical = -1; break; case -2: // Flush Left p_box->data.p_sample_text->i_justification_horizontal = 0; p_box->data.p_sample_text->i_justification_vertical = 0; break; case 0: // Flush Default default: p_box->data.p_sample_text->i_justification_horizontal = 1; p_box->data.p_sample_text->i_justification_vertical = -1; break; } MP4_GET2BYTES( p_box->data.p_sample_text->i_background_color[0] ); MP4_GET2BYTES( p_box->data.p_sample_text->i_background_color[1] ); MP4_GET2BYTES( p_box->data.p_sample_text->i_background_color[2] ); p_box->data.p_sample_text->i_background_color[3] = 0; MP4_GET2BYTES( p_box->data.p_sample_text->i_text_box_top ); MP4_GET2BYTES( p_box->data.p_sample_text->i_text_box_left ); MP4_GET2BYTES( p_box->data.p_sample_text->i_text_box_bottom ); MP4_GET2BYTES( p_box->data.p_sample_text->i_text_box_right ); #ifdef MP4_VERBOSE msg_Dbg( p_stream, "read box: \"text\" in stsd text" ); #endif MP4_READBOX_EXIT( 1 ); } static int MP4_ReadBox_sample_tx3g( stream_t *p_stream, MP4_Box_t *p_box ) { MP4_READBOX_ENTER( MP4_Box_data_sample_text_t ); MP4_GET4BYTES( p_box->data.p_sample_text->i_reserved1 ); MP4_GET2BYTES( p_box->data.p_sample_text->i_reserved2 ); MP4_GET2BYTES( p_box->data.p_sample_text->i_data_reference_index ); MP4_GET4BYTES( p_box->data.p_sample_text->i_display_flags ); MP4_GET1BYTE ( p_box->data.p_sample_text->i_justification_horizontal ); MP4_GET1BYTE ( p_box->data.p_sample_text->i_justification_vertical ); MP4_GET1BYTE ( p_box->data.p_sample_text->i_background_color[0] ); MP4_GET1BYTE ( p_box->data.p_sample_text->i_background_color[1] ); MP4_GET1BYTE ( p_box->data.p_sample_text->i_background_color[2] ); MP4_GET1BYTE ( p_box->data.p_sample_text->i_background_color[3] ); MP4_GET2BYTES( p_box->data.p_sample_text->i_text_box_top ); MP4_GET2BYTES( p_box->data.p_sample_text->i_text_box_left ); MP4_GET2BYTES( p_box->data.p_sample_text->i_text_box_bottom ); MP4_GET2BYTES( p_box->data.p_sample_text->i_text_box_right ); #ifdef MP4_VERBOSE msg_Dbg( p_stream, "read box: \"text\" in stsd text" ); #endif MP4_READBOX_EXIT( 1 ); } #if 0 /* We can't easily call it, and anyway ~ 20 bytes lost isn't a real problem */ static void MP4_FreeBox_sample_text( MP4_Box_t *p_box ) { FREENULL( p_box->data.p_sample_text->psz_text_name ); } #endif static int MP4_ReadBox_stsd( stream_t *p_stream, MP4_Box_t *p_box ) { MP4_READBOX_ENTER( MP4_Box_data_stsd_t ); MP4_GETVERSIONFLAGS( p_box->data.p_stsd ); MP4_GET4BYTES( p_box->data.p_stsd->i_entry_count ); stream_Seek( p_stream, p_box->i_pos + MP4_BOX_HEADERSIZE( p_box ) + 8 ); MP4_ReadBoxContainerRaw( p_stream, p_box ); #ifdef MP4_VERBOSE msg_Dbg( p_stream, "read box: \"stsd\" entry-count %d", p_box->data.p_stsd->i_entry_count ); #endif MP4_READBOX_EXIT( 1 ); } static int MP4_ReadBox_stsz( stream_t *p_stream, MP4_Box_t *p_box ) { unsigned int i; MP4_READBOX_ENTER( MP4_Box_data_stsz_t ); MP4_GETVERSIONFLAGS( p_box->data.p_stsz ); MP4_GET4BYTES( p_box->data.p_stsz->i_sample_size ); MP4_GET4BYTES( p_box->data.p_stsz->i_sample_count ); p_box->data.p_stsz->i_entry_size = calloc( sizeof( uint32_t ), p_box->data.p_stsz->i_sample_count ); if( !p_box->data.p_stsz->i_sample_size ) { for( i=0; (i<p_box->data.p_stsz->i_sample_count)&&(i_read >= 4 ); i++ ) { MP4_GET4BYTES( p_box->data.p_stsz->i_entry_size[i] ); } } #ifdef MP4_VERBOSE msg_Dbg( p_stream, "read box: \"stsz\" sample-size %d sample-count %d", p_box->data.p_stsz->i_sample_size, p_box->data.p_stsz->i_sample_count ); #endif MP4_READBOX_EXIT( 1 ); } static void MP4_FreeBox_stsz( MP4_Box_t *p_box ) { FREENULL( p_box->data.p_stsz->i_entry_size ); } static int MP4_ReadBox_stsc( stream_t *p_stream, MP4_Box_t *p_box ) { unsigned int i; MP4_READBOX_ENTER( MP4_Box_data_stsc_t ); MP4_GETVERSIONFLAGS( p_box->data.p_stsc ); MP4_GET4BYTES( p_box->data.p_stsc->i_entry_count ); p_box->data.p_stsc->i_first_chunk = calloc( sizeof( uint32_t ), p_box->data.p_stsc->i_entry_count ); p_box->data.p_stsc->i_samples_per_chunk = calloc( sizeof( uint32_t ), p_box->data.p_stsc->i_entry_count ); p_box->data.p_stsc->i_sample_description_index = calloc( sizeof( uint32_t ), p_box->data.p_stsc->i_entry_count ); for( i = 0; (i < p_box->data.p_stsc->i_entry_count )&&( i_read >= 12 );i++ ) { MP4_GET4BYTES( p_box->data.p_stsc->i_first_chunk[i] ); MP4_GET4BYTES( p_box->data.p_stsc->i_samples_per_chunk[i] ); MP4_GET4BYTES( p_box->data.p_stsc->i_sample_description_index[i] ); } #ifdef MP4_VERBOSE msg_Dbg( p_stream, "read box: \"stsc\" entry-count %d", p_box->data.p_stsc->i_entry_count ); #endif MP4_READBOX_EXIT( 1 ); } static void MP4_FreeBox_stsc( MP4_Box_t *p_box ) { FREENULL( p_box->data.p_stsc->i_first_chunk ); FREENULL( p_box->data.p_stsc->i_samples_per_chunk ); FREENULL( p_box->data.p_stsc->i_sample_description_index ); } static int MP4_ReadBox_stco_co64( stream_t *p_stream, MP4_Box_t *p_box ) { unsigned int i; MP4_READBOX_ENTER( MP4_Box_data_co64_t ); MP4_GETVERSIONFLAGS( p_box->data.p_co64 ); MP4_GET4BYTES( p_box->data.p_co64->i_entry_count ); p_box->data.p_co64->i_chunk_offset = calloc( sizeof( uint64_t ), p_box->data.p_co64->i_entry_count ); for( i = 0; i < p_box->data.p_co64->i_entry_count; i++ ) { if( p_box->i_type == FOURCC_stco ) { if( i_read < 4 ) { break; } MP4_GET4BYTES( p_box->data.p_co64->i_chunk_offset[i] ); } else { if( i_read < 8 ) { break; } MP4_GET8BYTES( p_box->data.p_co64->i_chunk_offset[i] ); } } #ifdef MP4_VERBOSE msg_Dbg( p_stream, "read box: \"co64\" entry-count %d", p_box->data.p_co64->i_entry_count ); #endif MP4_READBOX_EXIT( 1 ); } static void MP4_FreeBox_stco_co64( MP4_Box_t *p_box ) { FREENULL( p_box->data.p_co64->i_chunk_offset ); } static int MP4_ReadBox_stss( stream_t *p_stream, MP4_Box_t *p_box ) { unsigned int i; MP4_READBOX_ENTER( MP4_Box_data_stss_t ); MP4_GETVERSIONFLAGS( p_box->data.p_stss ); MP4_GET4BYTES( p_box->data.p_stss->i_entry_count ); p_box->data.p_stss->i_sample_number = calloc( sizeof( uint32_t ), p_box->data.p_stss->i_entry_count ); for( i = 0; (i < p_box->data.p_stss->i_entry_count )&&( i_read >= 4 ); i++ ) { MP4_GET4BYTES( p_box->data.p_stss->i_sample_number[i] ); /* XXX in libmp4 sample begin at 0 */ p_box->data.p_stss->i_sample_number[i]--; } #ifdef MP4_VERBOSE msg_Dbg( p_stream, "read box: \"stss\" entry-count %d", p_box->data.p_stss->i_entry_count ); #endif MP4_READBOX_EXIT( 1 ); } static void MP4_FreeBox_stss( MP4_Box_t *p_box ) { FREENULL( p_box->data.p_stss->i_sample_number ) } static int MP4_ReadBox_stsh( stream_t *p_stream, MP4_Box_t *p_box ) { unsigned int i; MP4_READBOX_ENTER( MP4_Box_data_stsh_t ); MP4_GETVERSIONFLAGS( p_box->data.p_stsh ); MP4_GET4BYTES( p_box->data.p_stsh->i_entry_count ); p_box->data.p_stsh->i_shadowed_sample_number = calloc( sizeof( uint32_t ), p_box->data.p_stsh->i_entry_count ); p_box->data.p_stsh->i_sync_sample_number = calloc( sizeof( uint32_t ), p_box->data.p_stsh->i_entry_count ); for( i = 0; (i < p_box->data.p_stss->i_entry_count )&&( i_read >= 8 ); i++ ) { MP4_GET4BYTES( p_box->data.p_stsh->i_shadowed_sample_number[i] ); MP4_GET4BYTES( p_box->data.p_stsh->i_sync_sample_number[i] ); } #ifdef MP4_VERBOSE msg_Dbg( p_stream, "read box: \"stsh\" entry-count %d", p_box->data.p_stsh->i_entry_count ); #endif MP4_READBOX_EXIT( 1 ); } static void MP4_FreeBox_stsh( MP4_Box_t *p_box ) { FREENULL( p_box->data.p_stsh->i_shadowed_sample_number ) FREENULL( p_box->data.p_stsh->i_sync_sample_number ) } static int MP4_ReadBox_stdp( stream_t *p_stream, MP4_Box_t *p_box ) { unsigned int i; MP4_READBOX_ENTER( MP4_Box_data_stdp_t ); MP4_GETVERSIONFLAGS( p_box->data.p_stdp ); p_box->data.p_stdp->i_priority = calloc( sizeof( uint16_t ), i_read / 2 ); for( i = 0; i < i_read / 2 ; i++ ) { MP4_GET2BYTES( p_box->data.p_stdp->i_priority[i] ); } #ifdef MP4_VERBOSE msg_Dbg( p_stream, "read box: \"stdp\" entry-count "I64Fd, i_read / 2 ); #endif MP4_READBOX_EXIT( 1 ); } static void MP4_FreeBox_stdp( MP4_Box_t *p_box ) { FREENULL( p_box->data.p_stdp->i_priority ) } static int MP4_ReadBox_padb( stream_t *p_stream, MP4_Box_t *p_box ) { unsigned int i; MP4_READBOX_ENTER( MP4_Box_data_padb_t ); MP4_GETVERSIONFLAGS( p_box->data.p_padb ); MP4_GET4BYTES( p_box->data.p_padb->i_sample_count ); p_box->data.p_padb->i_reserved1 = calloc( sizeof( uint16_t ), ( p_box->data.p_padb->i_sample_count + 1 ) / 2 ); p_box->data.p_padb->i_pad2 = calloc( sizeof( uint16_t ), ( p_box->data.p_padb->i_sample_count + 1 ) / 2 ); p_box->data.p_padb->i_reserved2 = calloc( sizeof( uint16_t ), ( p_box->data.p_padb->i_sample_count + 1 ) / 2 ); p_box->data.p_padb->i_pad1 = calloc( sizeof( uint16_t ), ( p_box->data.p_padb->i_sample_count + 1 ) / 2 ); for( i = 0; i < i_read / 2 ; i++ ) { p_box->data.p_padb->i_reserved1[i] = ( (*p_peek) >> 7 )&0x01; p_box->data.p_padb->i_pad2[i] = ( (*p_peek) >> 4 )&0x07; p_box->data.p_padb->i_reserved1[i] = ( (*p_peek) >> 3 )&0x01; p_box->data.p_padb->i_pad1[i] = ( (*p_peek) )&0x07; p_peek += 1; i_read -= 1; } #ifdef MP4_VERBOSE msg_Dbg( p_stream, "read box: \"stdp\" entry-count "I64Fd, i_read / 2 ); #endif MP4_READBOX_EXIT( 1 ); } static void MP4_FreeBox_padb( MP4_Box_t *p_box ) { FREENULL( p_box->data.p_padb->i_reserved1 ); FREENULL( p_box->data.p_padb->i_pad2 ); FREENULL( p_box->data.p_padb->i_reserved2 ); FREENULL( p_box->data.p_padb->i_pad1 ); } static int MP4_ReadBox_elst( stream_t *p_stream, MP4_Box_t *p_box ) { unsigned int i; MP4_READBOX_ENTER( MP4_Box_data_elst_t ); MP4_GETVERSIONFLAGS( p_box->data.p_elst ); MP4_GET4BYTES( p_box->data.p_elst->i_entry_count ); p_box->data.p_elst->i_segment_duration = calloc( sizeof( uint64_t ), p_box->data.p_elst->i_entry_count ); p_box->data.p_elst->i_media_time = calloc( sizeof( int64_t ), p_box->data.p_elst->i_entry_count ); p_box->data.p_elst->i_media_rate_integer = calloc( sizeof( uint16_t ), p_box->data.p_elst->i_entry_count ); p_box->data.p_elst->i_media_rate_fraction= calloc( sizeof( uint16_t ), p_box->data.p_elst->i_entry_count ); for( i = 0; i < p_box->data.p_elst->i_entry_count; i++ ) { if( p_box->data.p_elst->i_version == 1 ) { MP4_GET8BYTES( p_box->data.p_elst->i_segment_duration[i] ); MP4_GET8BYTES( p_box->data.p_elst->i_media_time[i] ); } else { MP4_GET4BYTES( p_box->data.p_elst->i_segment_duration[i] ); MP4_GET4BYTES( p_box->data.p_elst->i_media_time[i] ); p_box->data.p_elst->i_media_time[i] = (int32_t)p_box->data.p_elst->i_media_time[i]; } MP4_GET2BYTES( p_box->data.p_elst->i_media_rate_integer[i] ); MP4_GET2BYTES( p_box->data.p_elst->i_media_rate_fraction[i] ); } #ifdef MP4_VERBOSE msg_Dbg( p_stream, "read box: \"elst\" entry-count "I64Fd, p_box->data.p_elst->i_entry_count ); #endif MP4_READBOX_EXIT( 1 ); } static void MP4_FreeBox_elst( MP4_Box_t *p_box ) { FREENULL( p_box->data.p_elst->i_segment_duration ); FREENULL( p_box->data.p_elst->i_media_time ); FREENULL( p_box->data.p_elst->i_media_rate_integer ); FREENULL( p_box->data.p_elst->i_media_rate_fraction ); } static int MP4_ReadBox_cprt( stream_t *p_stream, MP4_Box_t *p_box ) { unsigned int i_language; unsigned int i; MP4_READBOX_ENTER( MP4_Box_data_cprt_t ); MP4_GETVERSIONFLAGS( p_box->data.p_cprt ); i_language = GetWBE( p_peek ); for( i = 0; i < 3; i++ ) { p_box->data.p_cprt->i_language[i] = ( ( i_language >> ( (2-i)*5 ) )&0x1f ) + 0x60; } p_peek += 2; i_read -= 2; MP4_GETSTRINGZ( p_box->data.p_cprt->psz_notice ); #ifdef MP4_VERBOSE msg_Dbg( p_stream, "read box: \"cprt\" language %c%c%c notice %s", p_box->data.p_cprt->i_language[0], p_box->data.p_cprt->i_language[1], p_box->data.p_cprt->i_language[2], p_box->data.p_cprt->psz_notice ); #endif MP4_READBOX_EXIT( 1 ); } static void MP4_FreeBox_cprt( MP4_Box_t *p_box ) { FREENULL( p_box->data.p_cprt->psz_notice ); } static int MP4_ReadBox_dcom( stream_t *p_stream, MP4_Box_t *p_box ) { MP4_READBOX_ENTER( MP4_Box_data_dcom_t ); MP4_GETFOURCC( p_box->data.p_dcom->i_algorithm ); #ifdef MP4_VERBOSE msg_Dbg( p_stream, "read box: \"dcom\" compression algorithm : %4.4s", (char*)&p_box->data.p_dcom->i_algorithm ); #endif MP4_READBOX_EXIT( 1 ); } static int MP4_ReadBox_cmvd( stream_t *p_stream, MP4_Box_t *p_box ) { MP4_READBOX_ENTER( MP4_Box_data_cmvd_t ); MP4_GET4BYTES( p_box->data.p_cmvd->i_uncompressed_size ); p_box->data.p_cmvd->i_compressed_size = i_read; if( !( p_box->data.p_cmvd->p_data = malloc( i_read ) ) ) { msg_Dbg( p_stream, "read box: \"cmvd\" not enough memory to load data" ); return( 1 ); } /* now copy compressed data */ memcpy( p_box->data.p_cmvd->p_data, p_peek, i_read); p_box->data.p_cmvd->b_compressed = 1; #ifdef MP4_VERBOSE msg_Dbg( p_stream, "read box: \"cmvd\" compressed data size %d", p_box->data.p_cmvd->i_compressed_size ); #endif MP4_READBOX_EXIT( 1 ); } static void MP4_FreeBox_cmvd( MP4_Box_t *p_box ) { FREENULL( p_box->data.p_cmvd->p_data ); } static int MP4_ReadBox_cmov( stream_t *p_stream, MP4_Box_t *p_box ) { MP4_Box_t *p_dcom; MP4_Box_t *p_cmvd; #ifdef HAVE_ZLIB_H stream_t *p_stream_memory; z_stream z_data; uint8_t *p_data; int i_result; #endif if( !( p_box->data.p_cmov = malloc( sizeof( MP4_Box_data_cmov_t ) ) ) ) { msg_Err( p_stream, "out of memory" ); return 0; } memset( p_box->data.p_cmov, 0, sizeof( MP4_Box_data_cmov_t ) ); if( !p_box->p_father || ( p_box->p_father->i_type != FOURCC_moov && p_box->p_father->i_type != FOURCC_foov ) ) { msg_Warn( p_stream, "Read box: \"cmov\" box alone" ); return 1; } if( !MP4_ReadBoxContainer( p_stream, p_box ) ) { return 0; } if( ( p_dcom = MP4_BoxGet( p_box, "dcom" ) ) == NULL || ( p_cmvd = MP4_BoxGet( p_box, "cmvd" ) ) == NULL || p_cmvd->data.p_cmvd->p_data == NULL ) { msg_Warn( p_stream, "read box: \"cmov\" incomplete" ); return 1; } if( p_dcom->data.p_dcom->i_algorithm != FOURCC_zlib ) { msg_Dbg( p_stream, "read box: \"cmov\" compression algorithm : %4.4s " "not supported", (char*)&p_dcom->data.p_dcom->i_algorithm ); return 1; } #ifndef HAVE_ZLIB_H msg_Dbg( p_stream, "read box: \"cmov\" zlib unsupported" ); return 1; #else /* decompress data */ /* allocate a new buffer */ if( !( p_data = malloc( p_cmvd->data.p_cmvd->i_uncompressed_size ) ) ) { msg_Err( p_stream, "read box: \"cmov\" not enough memory to " "uncompress data" ); return 1; } /* init default structures */ z_data.next_in = p_cmvd->data.p_cmvd->p_data; z_data.avail_in = p_cmvd->data.p_cmvd->i_compressed_size; z_data.next_out = p_data; z_data.avail_out = p_cmvd->data.p_cmvd->i_uncompressed_size; z_data.zalloc = (alloc_func)Z_NULL; z_data.zfree = (free_func)Z_NULL; z_data.opaque = (voidpf)Z_NULL; /* init zlib */ if( inflateInit( &z_data ) != Z_OK ) { msg_Err( p_stream, "read box: \"cmov\" error while uncompressing" ); free( p_data ); return 1; } /* uncompress */ i_result = inflate( &z_data, Z_NO_FLUSH ); if( i_result != Z_OK && i_result != Z_STREAM_END ) { msg_Err( p_stream, "read box: \"cmov\" error while uncompressing" ); free( p_data ); return 1; } if( p_cmvd->data.p_cmvd->i_uncompressed_size != z_data.total_out ) { msg_Warn( p_stream, "read box: \"cmov\" uncompressing data size " "mismatch" ); } p_cmvd->data.p_cmvd->i_uncompressed_size = z_data.total_out; /* close zlib */ if( inflateEnd( &z_data ) != Z_OK ) { msg_Warn( p_stream, "read box: \"cmov\" error while uncompressing " "data (ignored)" ); } free( p_cmvd->data.p_cmvd->p_data ); p_cmvd->data.p_cmvd->p_data = p_data; p_cmvd->data.p_cmvd->b_compressed = 0; msg_Dbg( p_stream, "read box: \"cmov\" box succesfully uncompressed" ); /* now create a memory stream */ p_stream_memory = stream_MemoryNew( VLC_OBJECT(p_stream), p_cmvd->data.p_cmvd->p_data, p_cmvd->data.p_cmvd->i_uncompressed_size, VLC_TRUE ); /* and read uncompressd moov */ p_box->data.p_cmov->p_moov = MP4_ReadBox( p_stream_memory, NULL ); stream_Delete( p_stream_memory ); #ifdef MP4_VERBOSE msg_Dbg( p_stream, "read box: \"cmov\" compressed movie header completed"); #endif return p_box->data.p_cmov->p_moov ? 1 : 0; #endif /* HAVE_ZLIB_H */ } static int MP4_ReadBox_rdrf( stream_t *p_stream, MP4_Box_t *p_box ) { uint32_t i_len; MP4_READBOX_ENTER( MP4_Box_data_rdrf_t ); MP4_GETVERSIONFLAGS( p_box->data.p_rdrf ); MP4_GETFOURCC( p_box->data.p_rdrf->i_ref_type ); MP4_GET4BYTES( i_len ); if( i_len > 0 ) { uint32_t i; p_box->data.p_rdrf->psz_ref = malloc( i_len + 1); for( i = 0; i < i_len; i++ ) { MP4_GET1BYTE( p_box->data.p_rdrf->psz_ref[i] ); } p_box->data.p_rdrf->psz_ref[i_len] = '\0'; } else { p_box->data.p_rdrf->psz_ref = NULL; } #ifdef MP4_VERBOSE msg_Dbg( p_stream, "read box: \"rdrf\" type:%4.4s ref %s", (char*)&p_box->data.p_rdrf->i_ref_type, p_box->data.p_rdrf->psz_ref ); #endif MP4_READBOX_EXIT( 1 ); } static void MP4_FreeBox_rdrf( MP4_Box_t *p_box ) { FREENULL( p_box->data.p_rdrf->psz_ref ) } static int MP4_ReadBox_rmdr( stream_t *p_stream, MP4_Box_t *p_box ) { MP4_READBOX_ENTER( MP4_Box_data_rmdr_t ); MP4_GETVERSIONFLAGS( p_box->data.p_rmdr ); MP4_GET4BYTES( p_box->data.p_rmdr->i_rate ); #ifdef MP4_VERBOSE msg_Dbg( p_stream, "read box: \"rmdr\" rate:%d", p_box->data.p_rmdr->i_rate ); #endif MP4_READBOX_EXIT( 1 ); } static int MP4_ReadBox_rmqu( stream_t *p_stream, MP4_Box_t *p_box ) { MP4_READBOX_ENTER( MP4_Box_data_rmqu_t ); MP4_GET4BYTES( p_box->data.p_rmqu->i_quality ); #ifdef MP4_VERBOSE msg_Dbg( p_stream, "read box: \"rmqu\" quality:%d", p_box->data.p_rmqu->i_quality ); #endif MP4_READBOX_EXIT( 1 ); } static int MP4_ReadBox_rmvc( stream_t *p_stream, MP4_Box_t *p_box ) { MP4_READBOX_ENTER( MP4_Box_data_rmvc_t ); MP4_GETVERSIONFLAGS( p_box->data.p_rmvc ); MP4_GETFOURCC( p_box->data.p_rmvc->i_gestaltType ); MP4_GET4BYTES( p_box->data.p_rmvc->i_val1 ); MP4_GET4BYTES( p_box->data.p_rmvc->i_val2 ); MP4_GET2BYTES( p_box->data.p_rmvc->i_checkType ); #ifdef MP4_VERBOSE msg_Dbg( p_stream, "read box: \"rmvc\" gestaltType:%4.4s val1:0x%x val2:0x%x checkType:0x%x", (char*)&p_box->data.p_rmvc->i_gestaltType, p_box->data.p_rmvc->i_val1,p_box->data.p_rmvc->i_val2, p_box->data.p_rmvc->i_checkType ); #endif MP4_READBOX_EXIT( 1 ); } static int MP4_ReadBox_drms( stream_t *p_stream, MP4_Box_t *p_box ) { MP4_Box_t *p_drms_box = p_box; MP4_READBOX_ENTER( uint8_t ); do { p_drms_box = p_drms_box->p_father; } while( p_drms_box && p_drms_box->i_type != FOURCC_drms ); if( p_drms_box && p_drms_box->data.p_sample_soun->p_drms ) { int i_ret; if( config_GetInt( p_stream, "france" ) ) { i_ret = -7; } else { i_ret= drms_init( p_drms_box->data.p_sample_soun->p_drms, p_box->i_type, p_peek, i_read ); } if( i_ret ) { const char *psz_error; switch( i_ret ) { case -1: psz_error = "unimplemented"; break; case -2: psz_error = "invalid argument"; break; case -3: psz_error = "could not get system key"; break; case -4: psz_error = "could not get SCI data"; break; case -5: psz_error = "no user key found in SCI data"; break; case -6: psz_error = "invalid user key"; break; case -7: psz_error = "you live in France"; break; default: psz_error = "unknown error"; break; } msg_Err( p_stream, "drms_init(%4.4s) failed (%s)", (char *)&p_box->i_type, psz_error ); drms_free( p_drms_box->data.p_sample_soun->p_drms ); p_drms_box->data.p_sample_soun->p_drms = NULL; } } MP4_READBOX_EXIT( 1 ); } static int MP4_ReadBox_0xa9xxx( stream_t *p_stream, MP4_Box_t *p_box ) { uint16_t i_length, i_dummy; MP4_READBOX_ENTER( MP4_Box_data_0xa9xxx_t ); p_box->data.p_0xa9xxx->psz_text = NULL; MP4_GET2BYTES( i_length ); MP4_GET2BYTES( i_dummy ); if( i_length > 0 ) { if( i_length > i_read ) i_length = i_read; p_box->data.p_0xa9xxx->psz_text = malloc( i_length + 1 ); memcpy( p_box->data.p_0xa9xxx->psz_text, p_peek, i_length ); p_box->data.p_0xa9xxx->psz_text[i_length] = '\0'; #ifdef MP4_VERBOSE msg_Dbg( p_stream, "read box: \"%4.4s\" text=`%s'", (char*)&p_box->i_type, p_box->data.p_0xa9xxx->psz_text ); #endif } MP4_READBOX_EXIT( 1 ); } static void MP4_FreeBox_0xa9xxx( MP4_Box_t *p_box ) { FREENULL( p_box->data.p_0xa9xxx->psz_text ); } /* For generic */ static int MP4_ReadBox_default( stream_t *p_stream, MP4_Box_t *p_box ) { if( !p_box->p_father ) { goto unknown; } if( p_box->p_father->i_type == FOURCC_stsd ) { MP4_Box_t *p_mdia = MP4_BoxGet( p_box, "../../../.." ); MP4_Box_t *p_hdlr; if( p_mdia == NULL || p_mdia->i_type != FOURCC_mdia || (p_hdlr = MP4_BoxGet( p_mdia, "hdlr" )) == NULL ) { goto unknown; } switch( p_hdlr->data.p_hdlr->i_handler_type ) { case FOURCC_soun: return MP4_ReadBox_sample_soun( p_stream, p_box ); case FOURCC_vide: return MP4_ReadBox_sample_vide( p_stream, p_box ); case FOURCC_text: return MP4_ReadBox_sample_text( p_stream, p_box ); case FOURCC_tx3g: return MP4_ReadBox_sample_tx3g( p_stream, p_box ); default: msg_Warn( p_stream, "unknown handler type in stsd (uncompletetly loaded)" ); return 1; } } unknown: msg_Warn( p_stream, "unknown box type %4.4s (uncompletetly loaded)", (char*)&p_box->i_type ); return 1; } /**** ------------------------------------------------------------------- ****/ /**** "Higher level" Functions ****/ /**** ------------------------------------------------------------------- ****/ static struct { uint32_t i_type; int (*MP4_ReadBox_function )( stream_t *p_stream, MP4_Box_t *p_box ); void (*MP4_FreeBox_function )( MP4_Box_t *p_box ); } MP4_Box_Function [] = { /* Containers */ { FOURCC_moov, MP4_ReadBoxContainer, MP4_FreeBox_Common }, { FOURCC_trak, MP4_ReadBoxContainer, MP4_FreeBox_Common }, { FOURCC_mdia, MP4_ReadBoxContainer, MP4_FreeBox_Common }, { FOURCC_moof, MP4_ReadBoxContainer, MP4_FreeBox_Common }, { FOURCC_minf, MP4_ReadBoxContainer, MP4_FreeBox_Common }, { FOURCC_stbl, MP4_ReadBoxContainer, MP4_FreeBox_Common }, { FOURCC_dinf, MP4_ReadBoxContainer, MP4_FreeBox_Common }, { FOURCC_edts, MP4_ReadBoxContainer, MP4_FreeBox_Common }, { FOURCC_udta, MP4_ReadBoxContainer, MP4_FreeBox_Common }, { FOURCC_nmhd, MP4_ReadBoxContainer, MP4_FreeBox_Common }, { FOURCC_hnti, MP4_ReadBoxContainer, MP4_FreeBox_Common }, { FOURCC_rmra, MP4_ReadBoxContainer, MP4_FreeBox_Common }, { FOURCC_rmda, MP4_ReadBoxContainer, MP4_FreeBox_Common }, { FOURCC_tref, MP4_ReadBoxContainer, MP4_FreeBox_Common }, { FOURCC_gmhd, MP4_ReadBoxContainer, MP4_FreeBox_Common }, { FOURCC_wave, MP4_ReadBoxContainer, MP4_FreeBox_Common }, /* specific box */ { FOURCC_ftyp, MP4_ReadBox_ftyp, MP4_FreeBox_ftyp }, { FOURCC_cmov, MP4_ReadBox_cmov, MP4_FreeBox_Common }, { FOURCC_mvhd, MP4_ReadBox_mvhd, MP4_FreeBox_Common }, { FOURCC_tkhd, MP4_ReadBox_tkhd, MP4_FreeBox_Common }, { FOURCC_mdhd, MP4_ReadBox_mdhd, MP4_FreeBox_Common }, { FOURCC_hdlr, MP4_ReadBox_hdlr, MP4_FreeBox_hdlr }, { FOURCC_vmhd, MP4_ReadBox_vmhd, MP4_FreeBox_Common }, { FOURCC_smhd, MP4_ReadBox_smhd, MP4_FreeBox_Common }, { FOURCC_hmhd, MP4_ReadBox_hmhd, MP4_FreeBox_Common }, { FOURCC_url, MP4_ReadBox_url, MP4_FreeBox_url }, { FOURCC_urn, MP4_ReadBox_urn, MP4_FreeBox_urn }, { FOURCC_dref, MP4_ReadBox_dref, MP4_FreeBox_Common }, { FOURCC_stts, MP4_ReadBox_stts, MP4_FreeBox_stts }, { FOURCC_ctts, MP4_ReadBox_ctts, MP4_FreeBox_ctts }, { FOURCC_stsd, MP4_ReadBox_stsd, MP4_FreeBox_Common }, { FOURCC_stsz, MP4_ReadBox_stsz, MP4_FreeBox_stsz }, { FOURCC_stsc, MP4_ReadBox_stsc, MP4_FreeBox_stsc }, { FOURCC_stco, MP4_ReadBox_stco_co64, MP4_FreeBox_stco_co64 }, { FOURCC_co64, MP4_ReadBox_stco_co64, MP4_FreeBox_stco_co64 }, { FOURCC_stss, MP4_ReadBox_stss, MP4_FreeBox_stss }, { FOURCC_stsh, MP4_ReadBox_stsh, MP4_FreeBox_stsh }, { FOURCC_stdp, MP4_ReadBox_stdp, MP4_FreeBox_stdp }, { FOURCC_padb, MP4_ReadBox_padb, MP4_FreeBox_padb }, { FOURCC_elst, MP4_ReadBox_elst, MP4_FreeBox_elst }, { FOURCC_cprt, MP4_ReadBox_cprt, MP4_FreeBox_cprt }, { FOURCC_esds, MP4_ReadBox_esds, MP4_FreeBox_esds }, { FOURCC_dcom, MP4_ReadBox_dcom, MP4_FreeBox_Common }, { FOURCC_cmvd, MP4_ReadBox_cmvd, MP4_FreeBox_cmvd }, { FOURCC_avcC, MP4_ReadBox_avcC, MP4_FreeBox_avcC }, /* Nothing to do with this box */ { FOURCC_mdat, MP4_ReadBoxSkip, MP4_FreeBox_Common }, { FOURCC_skip, MP4_ReadBoxSkip, MP4_FreeBox_Common }, { FOURCC_free, MP4_ReadBoxSkip, MP4_FreeBox_Common }, { FOURCC_wide, MP4_ReadBoxSkip, MP4_FreeBox_Common }, /* for codecs */ { FOURCC_soun, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun }, { FOURCC_ms02, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun }, { FOURCC_ms11, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun }, { FOURCC_ms55, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun }, { FOURCC__mp3, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun }, { FOURCC_mp4a, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun }, { FOURCC_twos, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun }, { FOURCC_sowt, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun }, { FOURCC_QDMC, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun }, { FOURCC_QDM2, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun }, { FOURCC_ima4, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun }, { FOURCC_IMA4, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun }, { FOURCC_dvi, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun }, { FOURCC_alaw, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun }, { FOURCC_ulaw, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun }, { FOURCC_raw, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun }, { FOURCC_MAC3, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun }, { FOURCC_MAC6, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun }, { FOURCC_Qclp, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun }, { FOURCC_samr, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun }, { FOURCC_sawb, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun }, { FOURCC_OggS, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun }, { FOURCC_alac, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun }, { FOURCC_vide, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide }, { FOURCC_mp4v, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide }, { FOURCC_SVQ1, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide }, { FOURCC_SVQ3, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide }, { FOURCC_ZyGo, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide }, { FOURCC_DIVX, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide }, { FOURCC_XVID, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide }, { FOURCC_h263, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide }, { FOURCC_s263, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide }, { FOURCC_cvid, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide }, { FOURCC_3IV1, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide }, { FOURCC_3iv1, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide }, { FOURCC_3IV2, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide }, { FOURCC_3iv2, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide }, { FOURCC_3IVD, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide }, { FOURCC_3ivd, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide }, { FOURCC_3VID, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide }, { FOURCC_3vid, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide }, { FOURCC_mjpa, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide }, { FOURCC_mjpb, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide }, { FOURCC_qdrw, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide }, { FOURCC_mp2v, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide }, { FOURCC_hdv2, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide }, { FOURCC_mjqt, MP4_ReadBox_default, NULL }, /* found in mjpa/b */ { FOURCC_mjht, MP4_ReadBox_default, NULL }, { FOURCC_dvc, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide }, { FOURCC_dvp, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide }, { FOURCC_VP31, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide }, { FOURCC_vp31, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide }, { FOURCC_h264, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide }, { FOURCC_jpeg, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide }, { FOURCC_avc1, MP4_ReadBox_sample_vide, MP4_FreeBox_sample_vide }, { FOURCC_mp4s, MP4_ReadBox_sample_mp4s, MP4_FreeBox_Common }, /* XXX there is 2 box where we could find this entry stbl and tref*/ { FOURCC_hint, MP4_ReadBox_default, MP4_FreeBox_Common }, /* found in tref box */ { FOURCC_dpnd, MP4_ReadBox_default, NULL }, { FOURCC_ipir, MP4_ReadBox_default, NULL }, { FOURCC_mpod, MP4_ReadBox_default, NULL }, /* found in hnti */ { FOURCC_rtp, MP4_ReadBox_default, NULL }, /* found in rmra */ { FOURCC_rdrf, MP4_ReadBox_rdrf, MP4_FreeBox_rdrf }, { FOURCC_rmdr, MP4_ReadBox_rmdr, MP4_FreeBox_Common }, { FOURCC_rmqu, MP4_ReadBox_rmqu, MP4_FreeBox_Common }, { FOURCC_rmvc, MP4_ReadBox_rmvc, MP4_FreeBox_Common }, { FOURCC_drms, MP4_ReadBox_sample_soun, MP4_FreeBox_sample_soun }, { FOURCC_sinf, MP4_ReadBoxContainer, MP4_FreeBox_Common }, { FOURCC_schi, MP4_ReadBoxContainer, MP4_FreeBox_Common }, { FOURCC_user, MP4_ReadBox_drms, MP4_FreeBox_Common }, { FOURCC_key, MP4_ReadBox_drms, MP4_FreeBox_Common }, { FOURCC_iviv, MP4_ReadBox_drms, MP4_FreeBox_Common }, { FOURCC_name, MP4_ReadBox_drms, MP4_FreeBox_Common }, { FOURCC_priv, MP4_ReadBox_drms, MP4_FreeBox_Common }, /* found in udta */ { FOURCC_0xa9nam,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx }, { FOURCC_0xa9aut,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx }, { FOURCC_0xa9cpy,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx }, { FOURCC_0xa9swr,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx }, { FOURCC_0xa9inf,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx }, { FOURCC_0xa9ART,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx }, { FOURCC_0xa9dir,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx }, { FOURCC_0xa9cmt,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx }, { FOURCC_0xa9req,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx }, { FOURCC_0xa9day,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx }, { FOURCC_0xa9des,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx }, { FOURCC_0xa9fmt,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx }, { FOURCC_0xa9prd,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx }, { FOURCC_0xa9prf,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx }, { FOURCC_0xa9src,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx }, { FOURCC_0xa9alb,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx }, { FOURCC_0xa9dis,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx }, { FOURCC_0xa9enc,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx }, { FOURCC_0xa9gen,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx }, { FOURCC_0xa9trk,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx }, { FOURCC_0xa9dsa,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx }, { FOURCC_0xa9hst,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx }, { FOURCC_0xa9url,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx }, { FOURCC_0xa9ope,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx }, { FOURCC_0xa9com,MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx }, /* Last entry */ { 0, MP4_ReadBox_default, NULL } }; /***************************************************************************** * MP4_ReadBox : parse the actual box and the children * XXX : Do not go to the next box *****************************************************************************/ static MP4_Box_t *MP4_ReadBox( stream_t *p_stream, MP4_Box_t *p_father ) { MP4_Box_t *p_box = malloc( sizeof( MP4_Box_t ) ); unsigned int i_index; if( !MP4_ReadBoxCommon( p_stream, p_box ) ) { msg_Warn( p_stream, "cannot read one box" ); free( p_box ); return NULL; } if( !p_box->i_size ) { msg_Dbg( p_stream, "found an empty box (null size)" ); free( p_box ); return NULL; } p_box->p_father = p_father; /* Now search function to call */ for( i_index = 0; ; i_index++ ) { if( ( MP4_Box_Function[i_index].i_type == p_box->i_type )|| ( MP4_Box_Function[i_index].i_type == 0 ) ) { break; } } if( !(MP4_Box_Function[i_index].MP4_ReadBox_function)( p_stream, p_box ) ) { free( p_box ); return NULL; } return p_box; } /***************************************************************************** * MP4_FreeBox : free memory after read with MP4_ReadBox and all * the children *****************************************************************************/ void MP4_BoxFree( stream_t *s, MP4_Box_t *p_box ) { unsigned int i_index; MP4_Box_t *p_child; if( !p_box ) { return; /* hehe */ } for( p_child = p_box->p_first; p_child != NULL; ) { MP4_Box_t *p_next; p_next = p_child->p_next; MP4_BoxFree( s, p_child ); p_child = p_next; } /* Now search function to call */ if( p_box->data.p_data ) { for( i_index = 0; ; i_index++ ) { if( ( MP4_Box_Function[i_index].i_type == p_box->i_type )|| ( MP4_Box_Function[i_index].i_type == 0 ) ) { break; } } if( MP4_Box_Function[i_index].MP4_FreeBox_function == NULL ) { /* Should not happen */ msg_Warn( s, "cannot free box %4.4s, type unknown", (char*)&p_box->i_type ); } else { MP4_Box_Function[i_index].MP4_FreeBox_function( p_box ); } free( p_box->data.p_data ); } free( p_box ); } /***************************************************************************** * MP4_BoxGetRoot : Parse the entire file, and create all boxes in memory ***************************************************************************** * The first box is a virtual box "root" and is the father for all first * level boxes for the file, a sort of virtual contener *****************************************************************************/ MP4_Box_t *MP4_BoxGetRoot( stream_t *s ) { MP4_Box_t *p_root; stream_t *p_stream; int i_result; p_root = malloc( sizeof( MP4_Box_t ) ); p_root->i_pos = 0; p_root->i_type = VLC_FOURCC( 'r', 'o', 'o', 't' ); p_root->i_shortsize = 1; p_root->i_size = stream_Size( s ); CreateUUID( &p_root->i_uuid, p_root->i_type ); p_root->data.p_data = NULL; p_root->p_father = NULL; p_root->p_first = NULL; p_root->p_last = NULL; p_root->p_next = NULL; p_stream = s; i_result = MP4_ReadBoxContainerRaw( p_stream, p_root ); if( i_result ) { MP4_Box_t *p_child; MP4_Box_t *p_moov; MP4_Box_t *p_cmov; /* check if there is a cmov, if so replace compressed moov by uncompressed one */ if( ( ( p_moov = MP4_BoxGet( p_root, "moov" ) ) && ( p_cmov = MP4_BoxGet( p_root, "moov/cmov" ) ) ) || ( ( p_moov = MP4_BoxGet( p_root, "foov" ) ) && ( p_cmov = MP4_BoxGet( p_root, "foov/cmov" ) ) ) ) { /* rename the compressed moov as a box to skip */ p_moov->i_type = FOURCC_skip; /* get uncompressed p_moov */ p_moov = p_cmov->data.p_cmov->p_moov; p_cmov->data.p_cmov->p_moov = NULL; /* make p_root father of this new moov */ p_moov->p_father = p_root; /* insert this new moov box as first child of p_root */ p_moov->p_next = p_child = p_root->p_first; p_root->p_first = p_moov; } } return p_root; } static void __MP4_BoxDumpStructure( stream_t *s, MP4_Box_t *p_box, unsigned int i_level ) { MP4_Box_t *p_child; if( !i_level ) { msg_Dbg( s, "dumping root Box \"%4.4s\"", (char*)&p_box->i_type ); } else { char str[512]; unsigned int i; memset( str, (uint8_t)' ', 512 ); for( i = 0; i < i_level; i++ ) { str[i*5] = '|'; } sprintf( str + i_level * 5, "+ %4.4s size %d", (char*)&p_box->i_type, (uint32_t)p_box->i_size ); msg_Dbg( s, "%s", str ); } p_child = p_box->p_first; while( p_child ) { __MP4_BoxDumpStructure( s, p_child, i_level + 1 ); p_child = p_child->p_next; } } void MP4_BoxDumpStructure( stream_t *s, MP4_Box_t *p_box ) { __MP4_BoxDumpStructure( s, p_box, 0 ); } /***************************************************************************** ***************************************************************************** ** ** High level methods to acces an MP4 file ** ***************************************************************************** *****************************************************************************/ static void __get_token( char **ppsz_path, char **ppsz_token, int *pi_number ) { size_t i_len ; if( !*ppsz_path[0] ) { *ppsz_token = NULL; *pi_number = 0; return; } i_len = 0; while( (*ppsz_path)[i_len] && (*ppsz_path)[i_len] != '/' && (*ppsz_path)[i_len] != '[' ) { i_len++; } if( !i_len && **ppsz_path == '/' ) { i_len = 1; } *ppsz_token = malloc( i_len + 1 ); memcpy( *ppsz_token, *ppsz_path, i_len ); (*ppsz_token)[i_len] = '\0'; *ppsz_path += i_len; if( **ppsz_path == '[' ) { (*ppsz_path)++; *pi_number = strtol( *ppsz_path, NULL, 10 ); while( **ppsz_path && **ppsz_path != ']' ) { (*ppsz_path)++; } if( **ppsz_path == ']' ) { (*ppsz_path)++; } } else { *pi_number = 0; } while( **ppsz_path == '/' ) { (*ppsz_path)++; } } static void __MP4_BoxGet( MP4_Box_t **pp_result, MP4_Box_t *p_box, const char *psz_fmt, va_list args) { char *psz_dup; char *psz_path; if( !p_box ) { *pp_result = NULL; return; } vasprintf( &psz_path, psz_fmt, args ); if( !psz_path || !psz_path[0] ) { FREENULL( psz_path ); *pp_result = NULL; return; } // fprintf( stderr, "path:'%s'\n", psz_path ); psz_dup = psz_path; /* keep this pointer, as it need to be unallocated */ for( ; ; ) { char *psz_token; int i_number; __get_token( &psz_path, &psz_token, &i_number ); // fprintf( stderr, "path:'%s', token:'%s' n:%d\n", // psz_path,psz_token,i_number ); if( !psz_token ) { FREENULL( psz_token ); free( psz_dup ); *pp_result = p_box; return; } else if( !strcmp( psz_token, "/" ) ) { /* Find root box */ while( p_box && p_box->i_type != VLC_FOURCC( 'r', 'o', 'o', 't' ) ) { p_box = p_box->p_father; } if( !p_box ) { free( psz_token ); free( psz_dup ); *pp_result = NULL; return; } } else if( !strcmp( psz_token, "." ) ) { /* Do nothing */ } else if( !strcmp( psz_token, ".." ) ) { p_box = p_box->p_father; if( !p_box ) { free( psz_token ); free( psz_dup ); *pp_result = NULL; return; } } else if( strlen( psz_token ) == 4 ) { uint32_t i_fourcc; i_fourcc = VLC_FOURCC( psz_token[0], psz_token[1], psz_token[2], psz_token[3] ); p_box = p_box->p_first; for( ; ; ) { if( !p_box ) { free( psz_token ); free( psz_dup ); *pp_result = NULL; return; } if( p_box->i_type == i_fourcc ) { if( !i_number ) { break; } i_number--; } p_box = p_box->p_next; } } else if( strlen( psz_token ) == 0 ) { p_box = p_box->p_first; for( ; ; ) { if( !p_box ) { free( psz_token ); free( psz_dup ); *pp_result = NULL; return; } if( !i_number ) { break; } i_number--; p_box = p_box->p_next; } } else { // fprintf( stderr, "Argg malformed token \"%s\"",psz_token ); FREENULL( psz_token ); free( psz_dup ); *pp_result = NULL; return; } free( psz_token ); } } /***************************************************************************** * MP4_BoxGet: find a box given a path relative to p_box ***************************************************************************** * Path Format: . .. / as usual * [number] to specifie box number ex: trak[12] * * ex: /moov/trak[12] * ../mdia *****************************************************************************/ MP4_Box_t *MP4_BoxGet( MP4_Box_t *p_box, const char *psz_fmt, ... ) { va_list args; MP4_Box_t *p_result; va_start( args, psz_fmt ); __MP4_BoxGet( &p_result, p_box, psz_fmt, args ); va_end( args ); return( p_result ); } /***************************************************************************** * MP4_BoxCount: count box given a path relative to p_box ***************************************************************************** * Path Format: . .. / as usual * [number] to specifie box number ex: trak[12] * * ex: /moov/trak[12] * ../mdia *****************************************************************************/ int MP4_BoxCount( MP4_Box_t *p_box, const char *psz_fmt, ... ) { va_list args; int i_count; MP4_Box_t *p_result, *p_next; va_start( args, psz_fmt ); __MP4_BoxGet( &p_result, p_box, psz_fmt, args ); va_end( args ); if( !p_result ) { return( 0 ); } i_count = 1; for( p_next = p_result->p_next; p_next != NULL; p_next = p_next->p_next) { if( p_next->i_type == p_result->i_type) { i_count++; } } return( i_count ); }