mirror of https://github.com/mpv-player/mpv
370 lines
14 KiB
C
370 lines
14 KiB
C
// .asf fileformat docs from http://divx.euro.ru
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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extern int verbose; // defined in mplayer.c
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#include "config.h"
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#include "mp_msg.h"
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#include "stream.h"
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#include "demuxer.h"
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#include "stheader.h"
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#include "asf.h"
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#ifdef ARCH_X86
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#define ASF_LOAD_GUID_PREFIX(guid) (*(uint32_t *)(guid))
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#else
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#define ASF_LOAD_GUID_PREFIX(guid) \
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((guid)[3] << 24 | (guid)[2] << 16 | (guid)[1] << 8 | (guid)[0])
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#endif
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#define ASF_GUID_PREFIX_audio_stream 0xF8699E40
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#define ASF_GUID_PREFIX_video_stream 0xBC19EFC0
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#define ASF_GUID_PREFIX_audio_conceal_none 0x49f1a440
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#define ASF_GUID_PREFIX_audio_conceal_interleave 0xbfc3cd50
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#define ASF_GUID_PREFIX_header 0x75B22630
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#define ASF_GUID_PREFIX_data_chunk 0x75b22636
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#define ASF_GUID_PREFIX_index_chunk 0x33000890
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#define ASF_GUID_PREFIX_stream_header 0xB7DC0791
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#define ASF_GUID_PREFIX_header_2_0 0xD6E229D1
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#define ASF_GUID_PREFIX_file_header 0x8CABDCA1
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#define ASF_GUID_PREFIX_content_desc 0x75b22633
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#define ASF_GUID_PREFIX_stream_group 0x7bf875ce
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static ASF_header_t asfh;
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static ASF_obj_header_t objh;
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static ASF_file_header_t fileh;
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static ASF_stream_header_t streamh;
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static ASF_content_description_t contenth;
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unsigned char* asf_packet=NULL;
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int asf_scrambling_h=1;
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int asf_scrambling_w=1;
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int asf_scrambling_b=1;
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int asf_packetsize=0;
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//int i;
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// the variable string is modify in this function
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void pack_asf_string(char* string, int length) {
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int i,j;
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if( string==NULL ) return;
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for( i=0, j=0; i<length && string[i]!='\0'; i+=2, j++) {
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string[j]=string[i];
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}
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string[j]='\0';
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}
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// the variable string is modify in this function
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void print_asf_string(const char* name, char* string, int length) {
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pack_asf_string(string, length);
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mp_msg(MSGT_HEADER,MSGL_V,"%s%s\n", name, string);
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}
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static char* asf_chunk_type(unsigned char* guid) {
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static char tmp[60];
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char *p;
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int i;
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switch(ASF_LOAD_GUID_PREFIX(guid)){
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case ASF_GUID_PREFIX_audio_stream:
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return "guid_audio_stream";
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case ASF_GUID_PREFIX_video_stream:
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return "guid_video_stream";
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case ASF_GUID_PREFIX_audio_conceal_none:
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return "guid_audio_conceal_none";
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case ASF_GUID_PREFIX_audio_conceal_interleave:
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return "guid_audio_conceal_interleave";
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case ASF_GUID_PREFIX_header:
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return "guid_header";
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case ASF_GUID_PREFIX_data_chunk:
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return "guid_data_chunk";
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case ASF_GUID_PREFIX_index_chunk:
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return "guid_index_chunk";
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case ASF_GUID_PREFIX_stream_header:
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return "guid_stream_header";
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case ASF_GUID_PREFIX_header_2_0:
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return "guid_header_2_0";
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case ASF_GUID_PREFIX_file_header:
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return "guid_file_header";
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case ASF_GUID_PREFIX_content_desc:
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return "guid_content_desc";
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default:
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strcpy(tmp, "unknown guid ");
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p = tmp + strlen(tmp);
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for (i = 0; i < 16; i++) {
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if ((1 << i) & ((1<<4) | (1<<6) | (1<<8))) *p++ = '-';
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sprintf(p, "%02x", guid[i]);
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p += 2;
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}
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return tmp;
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}
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}
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int asf_check_header(demuxer_t *demuxer){
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unsigned char asfhdrguid[16]={0x30,0x26,0xB2,0x75,0x8E,0x66,0xCF,0x11,0xA6,0xD9,0x00,0xAA,0x00,0x62,0xCE,0x6C};
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stream_read(demuxer->stream,(char*) &asfh,sizeof(asfh)); // header obj
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le2me_ASF_header_t(&asfh); // swap to machine endian
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// for(i=0;i<16;i++) printf(" %02X",temp[i]);printf("\n");
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// for(i=0;i<16;i++) printf(" %02X",asfhdrguid[i]);printf("\n");
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if(memcmp(asfhdrguid,asfh.objh.guid,16)){
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mp_msg(MSGT_HEADER,MSGL_V,"ASF_check: not ASF guid!\n");
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return 0; // not ASF guid
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}
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if(asfh.cno>256){
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mp_msg(MSGT_HEADER,MSGL_V,"ASF_check: invalid subchunks_no %d\n",(int) asfh.cno);
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return 0; // invalid header???
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}
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return 1;
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}
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extern void print_wave_header(WAVEFORMATEX *h);
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extern void print_video_header(BITMAPINFOHEADER *h);
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int read_asf_header(demuxer_t *demuxer){
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static unsigned char buffer[2048];
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uint32_t* streams = NULL;
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int audio_streams=0;
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int video_streams=0;
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uint16_t stream_count=0;
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int best_video = -1;
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int best_audio = -1;
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#if 1
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//printf("ASF file! (subchunks: %d)\n",asfh.cno);
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while(!stream_eof(demuxer->stream)){
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int pos,endpos;
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pos=stream_tell(demuxer->stream);
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stream_read(demuxer->stream,(char*) &objh,sizeof(objh));
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le2me_ASF_obj_header_t(&objh);
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if(stream_eof(demuxer->stream)) break; // EOF
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endpos=pos+objh.size;
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// for(i=0;i<16;i++) printf("%02X ",objh.guid[i]);
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//printf("0x%08X [%s] %d\n",pos, asf_chunk_type(objh.guid),(int) objh.size);
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switch(ASF_LOAD_GUID_PREFIX(objh.guid)){
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case ASF_GUID_PREFIX_stream_header:
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stream_read(demuxer->stream,(char*) &streamh,sizeof(streamh));
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le2me_ASF_stream_header_t(&streamh);
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if(verbose){
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mp_msg(MSGT_HEADER,MSGL_V,"stream type: %s\n",asf_chunk_type(streamh.type));
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mp_msg(MSGT_HEADER,MSGL_V,"stream concealment: %s\n",asf_chunk_type(streamh.concealment));
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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);
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mp_msg(MSGT_HEADER,MSGL_V,"unk1: %lX unk2: %X\n",(unsigned long)streamh.unk1,(unsigned int)streamh.unk2);
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mp_msg(MSGT_HEADER,MSGL_V,"FILEPOS=0x%X\n",stream_tell(demuxer->stream));
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}
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if(streamh.type_size>2048 || streamh.stream_size>2048){
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mp_msg(MSGT_HEADER,MSGL_FATAL,"FATAL: header size bigger than 2048 bytes (%d,%d)!\n"
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"Please contact mplayer authors, and upload/send this file.\n",
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(int)streamh.type_size,(int)streamh.stream_size);
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return 0;
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}
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// type-specific data:
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stream_read(demuxer->stream,(char*) buffer,streamh.type_size);
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switch(ASF_LOAD_GUID_PREFIX(streamh.type)){
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case ASF_GUID_PREFIX_audio_stream: {
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sh_audio_t* sh_audio=new_sh_audio(demuxer,streamh.stream_no & 0x7F);
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++audio_streams;
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sh_audio->wf=calloc((streamh.type_size<sizeof(WAVEFORMATEX))?sizeof(WAVEFORMATEX):streamh.type_size,1);
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memcpy(sh_audio->wf,buffer,streamh.type_size);
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le2me_WAVEFORMATEX(sh_audio->wf);
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if(verbose>=1) print_wave_header(sh_audio->wf);
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if(ASF_LOAD_GUID_PREFIX(streamh.concealment)==ASF_GUID_PREFIX_audio_conceal_interleave){
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stream_read(demuxer->stream,(char*) buffer,streamh.stream_size);
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asf_scrambling_h=buffer[0];
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asf_scrambling_w=(buffer[2]<<8)|buffer[1];
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asf_scrambling_b=(buffer[4]<<8)|buffer[3];
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asf_scrambling_w/=asf_scrambling_b;
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} else {
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asf_scrambling_b=asf_scrambling_h=asf_scrambling_w=1;
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}
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mp_msg(MSGT_HEADER,MSGL_V,"ASF: audio scrambling: %d x %d x %d\n",asf_scrambling_h,asf_scrambling_w,asf_scrambling_b);
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//if(demuxer->audio->id==-1) demuxer->audio->id=streamh.stream_no & 0x7F;
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break;
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}
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case ASF_GUID_PREFIX_video_stream: {
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sh_video_t* sh_video=new_sh_video(demuxer,streamh.stream_no & 0x7F);
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unsigned int len=streamh.type_size-(4+4+1+2);
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++video_streams;
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// sh_video->bih=malloc(chunksize); memset(sh_video->bih,0,chunksize);
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sh_video->bih=calloc((len<sizeof(BITMAPINFOHEADER))?sizeof(BITMAPINFOHEADER):len,1);
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memcpy(sh_video->bih,&buffer[4+4+1+2],len);
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le2me_BITMAPINFOHEADER(sh_video->bih);
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//sh_video->fps=(float)sh_video->video.dwRate/(float)sh_video->video.dwScale;
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//sh_video->frametime=(float)sh_video->video.dwScale/(float)sh_video->video.dwRate;
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if(verbose>=1) print_video_header(sh_video->bih);
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//asf_video_id=streamh.stream_no & 0x7F;
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//if(demuxer->video->id==-1) demuxer->video->id=streamh.stream_no & 0x7F;
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break;
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}
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}
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// stream-specific data:
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// stream_read(demuxer->stream,(char*) buffer,streamh.stream_size);
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break;
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// case ASF_GUID_PREFIX_header_2_0: return "guid_header_2_0";
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case ASF_GUID_PREFIX_file_header: // guid_file_header
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stream_read(demuxer->stream,(char*) &fileh,sizeof(fileh));
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le2me_ASF_file_header_t(&fileh);
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//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);
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mp_msg(MSGT_HEADER,MSGL_V,"ASF: packets: %d flags: %d max_packet_size: %d min_packet_size: %d max_bitrate: %d preroll: %d\n",(int)fileh.num_packets,(int)fileh.flags,(int)fileh.min_packet_size,(int)fileh.max_packet_size,(int)fileh.max_bitrate,(int)fileh.preroll);
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asf_packetsize=fileh.max_packet_size;
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asf_packet=malloc(asf_packetsize); // !!!
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break;
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case ASF_GUID_PREFIX_data_chunk: // guid_data_chunk
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demuxer->movi_start=stream_tell(demuxer->stream)+26;
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demuxer->movi_end=endpos;
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mp_msg(MSGT_HEADER,MSGL_V,"Found movie at 0x%X - 0x%X\n",(int)demuxer->movi_start,(int)demuxer->movi_end);
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break;
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// case ASF_GUID_PREFIX_index_chunk: return "guid_index_chunk";
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case ASF_GUID_PREFIX_content_desc: // Content description
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{
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char *string=NULL;
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stream_read(demuxer->stream,(char*) &contenth,sizeof(contenth));
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le2me_ASF_content_description_t(&contenth);
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mp_msg(MSGT_HEADER,MSGL_V,"\n");
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// extract the title
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if( contenth.title_size!=0 ) {
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string=(char*)malloc(contenth.title_size);
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stream_read(demuxer->stream, string, contenth.title_size);
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if(verbose)
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print_asf_string(" Title: ", string, contenth.title_size);
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else
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pack_asf_string(string, contenth.title_size);
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demux_info_add(demuxer, "name", string);
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}
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// extract the author
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if( contenth.author_size!=0 ) {
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string=(char*)realloc((void*)string, contenth.author_size);
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stream_read(demuxer->stream, string, contenth.author_size);
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if(verbose)
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print_asf_string(" Author: ", string, contenth.author_size);
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else
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pack_asf_string(string, contenth.author_size);
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demux_info_add(demuxer, "author", string);
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}
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// extract the copyright
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if( contenth.copyright_size!=0 ) {
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string=(char*)realloc((void*)string, contenth.copyright_size);
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stream_read(demuxer->stream, string, contenth.copyright_size);
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if(verbose)
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print_asf_string(" Copyright: ", string, contenth.copyright_size);
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else
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pack_asf_string(string, contenth.copyright_size);
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demux_info_add(demuxer, "copyright", string);
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}
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// extract the comment
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if( contenth.comment_size!=0 ) {
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string=(char*)realloc((void*)string, contenth.comment_size);
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stream_read(demuxer->stream, string, contenth.comment_size);
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if(verbose)
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print_asf_string(" Comment: ", string, contenth.comment_size);
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else
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pack_asf_string(string, contenth.comment_size);
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demux_info_add(demuxer, "comments", string);
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}
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// extract the rating
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if( contenth.rating_size!=0 ) {
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string=(char*)realloc((void*)string, contenth.rating_size);
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stream_read(demuxer->stream, string, contenth.rating_size);
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if(verbose)
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print_asf_string(" Rating: ", string, contenth.rating_size);
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}
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mp_msg(MSGT_HEADER,MSGL_V,"\n");
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free(string);
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break;
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}
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case ASF_GUID_PREFIX_stream_group: {
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uint16_t stream_id, i;
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uint32_t max_bitrate;
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char *object=NULL, *ptr=NULL;
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printf("============ ASF Stream group == START ===\n");
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printf(" object size = %d\n", (int)objh.size);
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object = (char*)malloc(objh.size);
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if( object==NULL ) {
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printf("Memory allocation failed\n");
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return 0;
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}
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stream_read( demuxer->stream, object, objh.size );
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// FIXME: We need some endian handling below...
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ptr = object;
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stream_count = le2me_16(*(uint16_t*)ptr);
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ptr += sizeof(uint16_t);
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if(stream_count > 0)
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streams = (uint32_t*)malloc(2*stream_count*sizeof(uint32_t));
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printf(" stream count=[0x%x][%u]\n", stream_count, stream_count );
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for( i=0 ; i<stream_count && ptr<((char*)object+objh.size) ; i++ ) {
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stream_id = le2me_16(*(uint16_t*)ptr);
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ptr += sizeof(uint16_t);
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memcpy(&max_bitrate, ptr, sizeof(uint32_t));// workaround unaligment bug on sparc
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max_bitrate = le2me_32(max_bitrate);
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ptr += sizeof(uint32_t);
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printf(" stream id=[0x%x][%u]\n", stream_id, stream_id );
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printf(" max bitrate=[0x%x][%u]\n", max_bitrate, max_bitrate );
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streams[2*i] = stream_id;
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streams[2*i+1] = max_bitrate;
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}
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printf("============ ASF Stream group == END ===\n");
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free( object );
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break;
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}
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} // switch GUID
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if(ASF_LOAD_GUID_PREFIX(objh.guid)==ASF_GUID_PREFIX_data_chunk) break; // movi chunk
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if(!stream_seek(demuxer->stream,endpos)) break;
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} // while EOF
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if(streams) {
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uint32_t vr = 0, ar = 0,i;
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#ifdef STREAMING
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if( demuxer->stream->streaming_ctrl!=NULL ) {
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if( demuxer->stream->streaming_ctrl->bandwidth!=0 && demuxer->stream->streaming_ctrl->data!=NULL ) {
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best_audio = ((asf_http_streaming_ctrl_t*)demuxer->stream->streaming_ctrl->data)->audio_id;
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best_video = ((asf_http_streaming_ctrl_t*)demuxer->stream->streaming_ctrl->data)->video_id;
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}
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} else
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#endif
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for(i = 0; i < stream_count; i++) {
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uint32_t id = streams[2*i];
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uint32_t rate = streams[2*i+1];
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if(demuxer->v_streams[id] && rate > vr) {
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vr = rate;
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best_video = id;
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} else if(demuxer->a_streams[id] && rate > ar) {
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ar = rate;
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best_audio = id;
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}
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}
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free(streams);
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}
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mp_msg(MSGT_HEADER,MSGL_V,"ASF: %d audio and %d video streams found\n",audio_streams,video_streams);
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if(!audio_streams) demuxer->audio->id=-2; // nosound
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else if(best_audio > 0 && demuxer->audio->id == -1) demuxer->audio->id=best_audio;
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if(!video_streams){
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if(!audio_streams){
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mp_msg(MSGT_HEADER,MSGL_ERR,"ASF: no audio or video headers found - broken file?\n");
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return 0;
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}
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demuxer->video->id=-2; // audio-only
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} else if (best_video > 0 && demuxer->video->id == -1) demuxer->video->id = best_video;
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#if 0
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if(verbose){
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printf("ASF duration: %d\n",(int)fileh.duration);
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printf("ASF start pts: %d\n",(int)fileh.start_timestamp);
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printf("ASF end pts: %d\n",(int)fileh.end_timestamp);
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}
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#endif
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#endif
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return 1;
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}
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