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Add Parsing off ftyp box and some more docs ref 

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@5258 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
atmos4 2002-03-22 00:54:10 +00:00
parent 72b5003310
commit 8266b9011d
1 changed files with 31 additions and 9 deletions
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40
libmpdemux/demux_mov.c
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@ -12,6 +12,8 @@
// aswell as .mov specific stuff.
// All sort of Stuff about MPEG4:
// http://www.cmlab.csie.ntu.edu.tw/~pkhsiao/thesis.html
// I really recommend N4270-1.doc and N4270-2.doc which are exact specs
// of the MP4-File Format and the MPEG4 Specific extensions. ::atmos
#include <stdio.h>
#include <stdlib.h>
@ -248,15 +250,35 @@ int mov_check_file(demuxer_t* demuxer){
else if(len<8) break; // invalid chunk
switch(id){
case MOV_FOURCC('f','t','y','p'):
// skip over the file type chunk
// Here are my guesses on it's format (atmos):
// char[4] majorBrand (eg. 'isom')
// int minorVersion (eg. 0x00000000)
// char[4] mediaType(?) (eg. 'mp41')
mp_msg(MSGT_DEMUX,MSGL_V,"MOV: Skipping unsupported Filetype chunk (len: %d)!\n",
len);
break;
case MOV_FOURCC('f','t','y','p'): {
int i;
unsigned int tmp;
// File Type Box (ftyp):
// char[4] major_brand (eg. 'isom')
// int minor_version (eg. 0x00000000)
// char[4] compatible_brands[] (eg. 'mp41')
// compatible_brands list spans to the end of box
#if 1
tmp = stream_read_dword(demuxer->stream);
switch(tmp) {
case MOV_FOURCC('i','s','o','m'):
mp_msg(MSGT_DEMUX,MSGL_V,"MOV: File-Type Major-Brand: ISO Media File\n");
break;
default:
tmp = be2me_32(tmp);
mp_msg(MSGT_DEMUX,MSGL_WARN,"MOV: File-Type unknown Major-Brand: %.4s\n",&tmp);
}
mp_msg(MSGT_DEMUX,MSGL_V,"MOV: File-Type Minor-Version: %d\n",
stream_read_dword(demuxer->stream));
skipped += 8;
// List all compatible brands
for(i = 0; i < ((len-16)/4); i++) {
tmp = be2me_32(stream_read_dword(demuxer->stream));
mp_msg(MSGT_DEMUX,MSGL_V,"MOV: File-Type Compatible-Brands #%d: %.4s\n",i,&tmp);
skipped += 4;
}
#endif
} break;
case MOV_FOURCC('m','o','o','v'):
// case MOV_FOURCC('c','m','o','v'):
mp_msg(MSGT_DEMUX,MSGL_V,"MOV: Movie header found!\n");