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// .asf fileformat docs from http://divx.euro.ru
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
extern int verbose; // defined in mplayer.c
#include "config.h"
#include "mp_msg.h"
#include "stream.h"
#include "demuxer.h"
#include "stheader.h"
#include "asf.h"
#ifdef ARCH_X86
#define ASF_LOAD_GUID_PREFIX(guid) (*(uint32_t *)(guid))
#else
#define ASF_LOAD_GUID_PREFIX(guid) \
((guid)[3] << 24 | (guid)[2] << 16 | (guid)[1] << 8 | (guid)[0])
#endif
#define ASF_GUID_PREFIX_audio_stream 0xF8699E40
#define ASF_GUID_PREFIX_video_stream 0xBC19EFC0
#define ASF_GUID_PREFIX_audio_conceal_none 0x49f1a440
#define ASF_GUID_PREFIX_audio_conceal_interleave 0xbfc3cd50
#define ASF_GUID_PREFIX_header 0x75B22630
#define ASF_GUID_PREFIX_data_chunk 0x75b22636
#define ASF_GUID_PREFIX_index_chunk 0x33000890
#define ASF_GUID_PREFIX_stream_header 0xB7DC0791
#define ASF_GUID_PREFIX_header_2_0 0xD6E229D1
#define ASF_GUID_PREFIX_file_header 0x8CABDCA1
#define ASF_GUID_PREFIX_content_desc 0x75b22633
static ASF_header_t asfh;
static ASF_obj_header_t objh;
static ASF_file_header_t fileh;
static ASF_stream_header_t streamh;
static ASF_content_description_t contenth;
unsigned char* asf_packet=NULL;
int asf_scrambling_h=1;
int asf_scrambling_w=1;
int asf_scrambling_b=1;
int asf_packetsize=0;
//int i;
// the variable string is modify in this function
void pack_asf_string(char* string, int length) {
int i,j;
if( string==NULL ) return;
for( i=0, j=0; i<length && string[i]!='\0'; i+=2, j++) {
string[j]=string[i];
}
string[j]='\0';
}
// the variable string is modify in this function
void print_asf_string(const char* name, char* string, int length) {
pack_asf_string(string, length);
mp_msg(MSGT_HEADER,MSGL_V,"%s%s\n", name, string);
}
static char* asf_chunk_type(unsigned char* guid) {
static char tmp[60];
char *p;
int i;
switch(ASF_LOAD_GUID_PREFIX(guid)){
case ASF_GUID_PREFIX_audio_stream:
return "guid_audio_stream";
case ASF_GUID_PREFIX_video_stream:
return "guid_video_stream";
case ASF_GUID_PREFIX_audio_conceal_none:
return "guid_audio_conceal_none";
case ASF_GUID_PREFIX_audio_conceal_interleave:
return "guid_audio_conceal_interleave";
case ASF_GUID_PREFIX_header:
return "guid_header";
case ASF_GUID_PREFIX_data_chunk:
return "guid_data_chunk";
case ASF_GUID_PREFIX_index_chunk:
return "guid_index_chunk";
case ASF_GUID_PREFIX_stream_header:
return "guid_stream_header";
case ASF_GUID_PREFIX_header_2_0:
return "guid_header_2_0";
case ASF_GUID_PREFIX_file_header:
return "guid_file_header";
case ASF_GUID_PREFIX_content_desc:
return "guid_content_desc";
default:
strcpy(tmp, "unknown guid ");
p = tmp + strlen(tmp);
for (i = 0; i < 16; i++) {
if ((1 << i) & ((1<<4) | (1<<6) | (1<<8))) *p++ = '-';
sprintf(p, "%02x", guid[i]);
p += 2;
}
return tmp;
}
}
int asf_check_header(demuxer_t *demuxer){
unsigned char asfhdrguid[16]={0x30,0x26,0xB2,0x75,0x8E,0x66,0xCF,0x11,0xA6,0xD9,0x00,0xAA,0x00,0x62,0xCE,0x6C};
stream_read(demuxer->stream,(char*) &asfh,sizeof(asfh)); // header obj
le2me_ASF_header_t(&asfh); // swap to machine endian
// for(i=0;i<16;i++) printf(" %02X",temp[i]);printf("\n");
// for(i=0;i<16;i++) printf(" %02X",asfhdrguid[i]);printf("\n");
if(memcmp(asfhdrguid,asfh.objh.guid,16)){
mp_msg(MSGT_HEADER,MSGL_V,"ASF_check: not ASF guid!\n");
return 0; // not ASF guid
}
if(asfh.cno>256){
mp_msg(MSGT_HEADER,MSGL_V,"ASF_check: invalid subchunks_no %d\n",(int) asfh.cno);
return 0; // invalid header???
}
return 1;
}
extern void print_wave_header(WAVEFORMATEX *h);
extern void print_video_header(BITMAPINFOHEADER *h);
int read_asf_header(demuxer_t *demuxer){
static unsigned char buffer[1024];
#if 1
//printf("ASF file! (subchunks: %d)\n",asfh.cno);
while(!stream_eof(demuxer->stream)){
int pos,endpos;
pos=stream_tell(demuxer->stream);
stream_read(demuxer->stream,(char*) &objh,sizeof(objh));
le2me_ASF_obj_header_t(&objh);
if(stream_eof(demuxer->stream)) break; // EOF
endpos=pos+objh.size;
// for(i=0;i<16;i++) printf("%02X ",objh.guid[i]);
//printf("0x%08X [%s] %d\n",pos, asf_chunk_type(objh.guid),(int) objh.size);
switch(ASF_LOAD_GUID_PREFIX(objh.guid)){
case ASF_GUID_PREFIX_stream_header:
stream_read(demuxer->stream,(char*) &streamh,sizeof(streamh));
le2me_ASF_stream_header_t(&streamh);
if(verbose){
mp_msg(MSGT_HEADER,MSGL_V,"stream type: %s\n",asf_chunk_type(streamh.type));
mp_msg(MSGT_HEADER,MSGL_V,"stream concealment: %s\n",asf_chunk_type(streamh.concealment));
mp_msg(MSGT_HEADER,MSGL_V,"type: %d bytes, stream: %d bytes ID: %d\n",(int)streamh.type_size,(int)streamh.stream_size,(int)streamh.stream_no);
mp_msg(MSGT_HEADER,MSGL_V,"unk1: %lX unk2: %X\n",(unsigned long)streamh.unk1,(unsigned int)streamh.unk2);
mp_msg(MSGT_HEADER,MSGL_V,"FILEPOS=0x%X\n",stream_tell(demuxer->stream));
}
if(streamh.type_size>1024 || streamh.stream_size>1024){
mp_msg(MSGT_HEADER,MSGL_FATAL,"FATAL: header size bigger than 1024 bytes!\n"
"Please contact mplayer authors, and upload/send this file.\n");
return 0;
}
// type-specific data:
stream_read(demuxer->stream,(char*) buffer,streamh.type_size);
switch(ASF_LOAD_GUID_PREFIX(streamh.type)){
case ASF_GUID_PREFIX_audio_stream: {
sh_audio_t* sh_audio=new_sh_audio(demuxer,streamh.stream_no & 0x7F);
sh_audio->wf=calloc((streamh.type_size<sizeof(WAVEFORMATEX))?sizeof(WAVEFORMATEX):streamh.type_size,1);
memcpy(sh_audio->wf,buffer,streamh.type_size);
le2me_WAVEFORMATEX(sh_audio->wf);
if(verbose>=1) print_wave_header(sh_audio->wf);
if(ASF_LOAD_GUID_PREFIX(streamh.concealment)==ASF_GUID_PREFIX_audio_conceal_interleave){
stream_read(demuxer->stream,(char*) buffer,streamh.stream_size);
asf_scrambling_h=buffer[0];
asf_scrambling_w=(buffer[2]<<8)|buffer[1];
asf_scrambling_b=(buffer[4]<<8)|buffer[3];
asf_scrambling_w/=asf_scrambling_b;
} else {
asf_scrambling_b=asf_scrambling_h=asf_scrambling_w=1;
}
mp_msg(MSGT_HEADER,MSGL_V,"ASF: audio scrambling: %d x %d x %d\n",asf_scrambling_h,asf_scrambling_w,asf_scrambling_b);
//if(demuxer->audio->id==-1) demuxer->audio->id=streamh.stream_no & 0x7F;
break;
}
case ASF_GUID_PREFIX_video_stream: {
sh_video_t* sh_video=new_sh_video(demuxer,streamh.stream_no & 0x7F);
int len=streamh.type_size-(4+4+1+2);
// sh_video->bih=malloc(chunksize); memset(sh_video->bih,0,chunksize);
sh_video->bih=calloc((len<sizeof(BITMAPINFOHEADER))?sizeof(BITMAPINFOHEADER):len,1);
memcpy(sh_video->bih,&buffer[4+4+1+2],len);
le2me_BITMAPINFOHEADER(sh_video->bih);
//sh_video->fps=(float)sh_video->video.dwRate/(float)sh_video->video.dwScale;
//sh_video->frametime=(float)sh_video->video.dwScale/(float)sh_video->video.dwRate;
if(verbose>=1) print_video_header(sh_video->bih);
//asf_video_id=streamh.stream_no & 0x7F;
//if(demuxer->video->id==-1) demuxer->video->id=streamh.stream_no & 0x7F;
break;
}
}
// stream-specific data:
// stream_read(demuxer->stream,(char*) buffer,streamh.stream_size);
break;
// case ASF_GUID_PREFIX_header_2_0: return "guid_header_2_0";
case ASF_GUID_PREFIX_file_header: // guid_file_header
stream_read(demuxer->stream,(char*) &fileh,sizeof(fileh));
le2me_ASF_file_header_t(&fileh);
mp_msg(MSGT_HEADER,MSGL_V,"ASF: packets: %d flags: %d pack_size: %d frame_size: %d\n",(int)fileh.packets,(int)fileh.flags,(int)fileh.packetsize,(int)fileh.frame_size);
asf_packetsize=fileh.packetsize;
asf_packet=malloc(asf_packetsize); // !!!
break;
case ASF_GUID_PREFIX_data_chunk: // guid_data_chunk
demuxer->movi_start=stream_tell(demuxer->stream)+26;
demuxer->movi_end=endpos;
mp_msg(MSGT_HEADER,MSGL_V,"Found movie at 0x%X - 0x%X\n",(int)demuxer->movi_start,(int)demuxer->movi_end);
break;
// case ASF_GUID_PREFIX_index_chunk: return "guid_index_chunk";
case ASF_GUID_PREFIX_content_desc: // Content description
{
char *string=NULL;
stream_read(demuxer->stream,(char*) &contenth,sizeof(contenth));
le2me_ASF_content_description_t(&contenth);
mp_msg(MSGT_HEADER,MSGL_V,"\n");
// extract the title
if( contenth.title_size!=0 ) {
string=(char*)malloc(contenth.title_size);
stream_read(demuxer->stream, string, contenth.title_size);
if(verbose)
print_asf_string(" Title: ", string, contenth.title_size);
else
pack_asf_string(string, contenth.title_size);
demux_info_add(demuxer, "name", string);
}
// extract the author
if( contenth.author_size!=0 ) {
string=(char*)realloc((void*)string, contenth.author_size);
stream_read(demuxer->stream, string, contenth.author_size);
if(verbose)
print_asf_string(" Author: ", string, contenth.author_size);
else
pack_asf_string(string, contenth.author_size);
demux_info_add(demuxer, "author", string);
}
// extract the copyright
if( contenth.copyright_size!=0 ) {
string=(char*)realloc((void*)string, contenth.copyright_size);
stream_read(demuxer->stream, string, contenth.copyright_size);
if(verbose)
print_asf_string(" Copyright: ", string, contenth.copyright_size);
else
pack_asf_string(string, contenth.copyright_size);
demux_info_add(demuxer, "copyright", string);
}
// extract the comment
if( contenth.comment_size!=0 ) {
string=(char*)realloc((void*)string, contenth.comment_size);
stream_read(demuxer->stream, string, contenth.comment_size);
if(verbose)
print_asf_string(" Comment: ", string, contenth.comment_size);
else
pack_asf_string(string, contenth.comment_size);
demux_info_add(demuxer, "comments", string);
}
// extract the rating
if( contenth.rating_size!=0 ) {
string=(char*)realloc((void*)string, contenth.rating_size);
stream_read(demuxer->stream, string, contenth.rating_size);
if(verbose)
print_asf_string(" Rating: ", string, contenth.rating_size);
}
mp_msg(MSGT_HEADER,MSGL_V,"\n");
free(string);
break;
}
} // switch GUID
if(ASF_LOAD_GUID_PREFIX(objh.guid)==ASF_GUID_PREFIX_data_chunk) break; // movi chunk
if(!stream_seek(demuxer->stream,endpos)) break;
} // while EOF
#if 0
if(verbose){
printf("ASF duration: %d\n",(int)fileh.duration);
printf("ASF start pts: %d\n",(int)fileh.start_timestamp);
printf("ASF end pts: %d\n",(int)fileh.end_timestamp);
}
#endif
#endif
return 1;
}
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