int read_asf_header(demuxer_t *demuxer,struct asf_priv* asf){ int hdr_len = asf->header.objh.size - sizeof(asf->header); int hdr_skip = 0; char *hdr = NULL; char guid_buffer[16]; int pos, start = stream_tell(demuxer->stream); uint32_t* streams = NULL; int audio_streams=0; int video_streams=0; uint16_t stream_count=0; int best_video = -1; int best_audio = -1; uint64_t data_len; ASF_stream_header_t *streamh; uint8_t *buffer; int audio_pos=0; if(hdr_len < 0) { mp_msg(MSGT_HEADER, MSGL_FATAL, "Header size is too small.\n"); return 0; } if (hdr_len > 1024 * 1024) { mp_msg(MSGT_HEADER, MSGL_ERR, MSGTR_MPDEMUX_ASFHDR_HeaderSizeOver1MB, hdr_len); hdr_skip = hdr_len - 1024 * 1024; hdr_len = 1024 * 1024; } hdr = malloc(hdr_len); if (!hdr) { mp_msg(MSGT_HEADER, MSGL_FATAL, MSGTR_MPDEMUX_ASFHDR_HeaderMallocFailed, hdr_len); return 0; } stream_read(demuxer->stream, hdr, hdr_len); if (hdr_skip) stream_skip(demuxer->stream, hdr_skip); if (stream_eof(demuxer->stream)) { mp_msg(MSGT_HEADER, MSGL_FATAL, MSGTR_MPDEMUX_ASFHDR_EOFWhileReadingHeader); goto err_out; } if (is_drm(hdr, hdr_len)) mp_msg(MSGT_HEADER, MSGL_FATAL, MSGTR_MPDEMUX_ASFHDR_DRMProtected); if ((pos = find_asf_guid(hdr, asf_ext_stream_audio, 0, hdr_len)) >= 0) { // Special case: found GUID for dvr-ms audio. // Now skip back to associated stream header. int sh_pos=0; sh_pos = find_backwards_asf_guid(hdr, asf_stream_header_guid, pos); if (sh_pos > 0) { sh_audio_t *sh_audio; mp_msg(MSGT_HEADER, MSGL_V, "read_asf_header found dvr-ms audio stream header pos=%d\n", sh_pos); // found audio stream header - following code reads header and // initializes audio stream. audio_pos = pos - 16 - 8; streamh = (ASF_stream_header_t *)&hdr[sh_pos]; le2me_ASF_stream_header_t(streamh); audio_pos += 64; //16+16+4+4+4+16+4; buffer = &hdr[audio_pos]; sh_audio=new_sh_audio(demuxer,streamh->stream_no & 0x7F, NULL); sh_audio->needs_parsing = 1; mp_msg(MSGT_DEMUX, MSGL_INFO, MSGTR_AudioID, "asfheader", streamh->stream_no & 0x7F); ++audio_streams; if (!asf_init_audio_stream(demuxer, asf, sh_audio, streamh, &audio_pos, &buffer, hdr, hdr_len)) goto len_err_out; if (!get_ext_stream_properties(hdr, hdr_len, streamh->stream_no, asf, 0)) goto len_err_out; } } // find stream headers // only reset pos if we didnt find dvr_ms audio stream // if we did find it then we want to avoid reading its header twice if (audio_pos == 0) pos = 0; while ((pos = find_asf_guid(hdr, asf_stream_header_guid, pos, hdr_len)) >= 0) { streamh = (ASF_stream_header_t *)&hdr[pos]; pos += sizeof(ASF_stream_header_t); if (pos > hdr_len) goto len_err_out; le2me_ASF_stream_header_t(streamh); 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", pos + start); // type-specific data: buffer = &hdr[pos]; pos += streamh->type_size; if (pos > hdr_len) goto len_err_out; 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, NULL); mp_msg(MSGT_DEMUX, MSGL_INFO, MSGTR_AudioID, "asfheader", streamh->stream_no & 0x7F); ++audio_streams; if (!asf_init_audio_stream(demuxer, asf, sh_audio, streamh, &pos, &buffer, hdr, hdr_len)) goto len_err_out; //if(demuxer->audio->id==-1) demuxer->audio->id=streamh.stream_no & 0x7F; break; } case ASF_GUID_PREFIX_video_stream: { unsigned int len; float asp_ratio; sh_video_t* sh_video=new_sh_video(demuxer,streamh->stream_no & 0x7F); mp_msg(MSGT_DEMUX, MSGL_INFO, MSGTR_VideoID, "asfheader", streamh->stream_no & 0x7F); len=streamh->type_size-(4+4+1+2); ++video_streams; // sh_video->bih=malloc(chunksize); memset(sh_video->bih,0,chunksize); sh_video->bih=calloc((len<sizeof(*sh_video->bih))?sizeof(*sh_video->bih):len,1); memcpy(sh_video->bih,&buffer[4+4+1+2],len); le2me_BITMAPINFOHEADER(sh_video->bih); if (sh_video->bih->biSize > len && sh_video->bih->biSize > sizeof(*sh_video->bih)) sh_video->bih->biSize = len; if (sh_video->bih->biCompression == mmioFOURCC('D', 'V', 'R', ' ')) { //mp_msg(MSGT_DEMUXER, MSGL_WARN, MSGTR_MPDEMUX_ASFHDR_DVRWantsLibavformat); //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; asf->asf_frame_state=-1; asf->asf_frame_start_found=0; asf->asf_is_dvr_ms=1; asf->dvr_last_vid_pts=0.0; } else asf->asf_is_dvr_ms=0; if (!get_ext_stream_properties(hdr, hdr_len, streamh->stream_no, asf, 1)) goto len_err_out; if (get_meta(hdr, hdr_len, streamh->stream_no, &asp_ratio)) { sh_video->aspect = asp_ratio * sh_video->bih->biWidth / sh_video->bih->biHeight; } sh_video->i_bps = asf->bps; if( mp_msg_test(MSGT_DEMUX,MSGL_V) ) print_video_header(sh_video->bih, MSGL_V); //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); } // find file header pos = find_asf_guid(hdr, asf_file_header_guid, 0, hdr_len); if (pos >= 0) { ASF_file_header_t *fileh = (ASF_file_header_t *)&hdr[pos]; pos += sizeof(ASF_file_header_t); if (pos > hdr_len) goto len_err_out; le2me_ASF_file_header_t(fileh); 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); asf->packetsize=fileh->max_packet_size; asf->packet=malloc(asf->packetsize); // !!! asf->packetrate=fileh->max_bitrate/8.0/(double)asf->packetsize; asf->movielength=(fileh->play_duration-10000*fileh->preroll)/10000000.0; } // find content header pos = find_asf_guid(hdr, asf_content_desc_guid, 0, hdr_len); if (pos >= 0) { ASF_content_description_t *contenth = (ASF_content_description_t *)&hdr[pos]; char *string=NULL; uint16_t* wstring = NULL; uint16_t len; pos += sizeof(ASF_content_description_t); if (pos > hdr_len) goto len_err_out; le2me_ASF_content_description_t(contenth); mp_msg(MSGT_HEADER,MSGL_V,"\n"); // extract the title if((len = contenth->title_size) != 0) { wstring = (uint16_t*)&hdr[pos]; pos += len; if (pos > hdr_len) goto len_err_out; if ((string = get_ucs2str(wstring, len))) { mp_msg(MSGT_HEADER,MSGL_V," Title: %s\n", string); demux_info_add(demuxer, "title", string); free(string); } } // extract the author if((len = contenth->author_size) != 0) { wstring = (uint16_t*)&hdr[pos]; pos += len; if (pos > hdr_len) goto len_err_out; if ((string = get_ucs2str(wstring, len))) { mp_msg(MSGT_HEADER,MSGL_V," Author: %s\n", string); demux_info_add(demuxer, "author", string); free(string); } } // extract the copyright if((len = contenth->copyright_size) != 0) { wstring = (uint16_t*)&hdr[pos]; pos += len; if (pos > hdr_len) goto len_err_out; if ((string = get_ucs2str(wstring, len))) { mp_msg(MSGT_HEADER,MSGL_V," Copyright: %s\n", string); demux_info_add(demuxer, "copyright", string); free(string); } } // extract the comment if((len = contenth->comment_size) != 0) { wstring = (uint16_t*)&hdr[pos]; pos += len; if (pos > hdr_len) goto len_err_out; if ((string = get_ucs2str(wstring, len))) { mp_msg(MSGT_HEADER,MSGL_V," Comment: %s\n", string); demux_info_add(demuxer, "comments", string); free(string); } } // extract the rating if((len = contenth->rating_size) != 0) { wstring = (uint16_t*)&hdr[pos]; pos += len; if (pos > hdr_len) goto len_err_out; if ((string = get_ucs2str(wstring, len))) { mp_msg(MSGT_HEADER,MSGL_V," Rating: %s\n", string); free(string); } } mp_msg(MSGT_HEADER,MSGL_V,"\n"); } // find content header pos = find_asf_guid(hdr, asf_stream_group_guid, 0, hdr_len); if (pos >= 0) { int max_streams = (hdr_len - pos - 2) / 6; uint16_t stream_id, i; uint32_t max_bitrate; char *ptr = &hdr[pos]; mp_msg(MSGT_HEADER,MSGL_V,"============ ASF Stream group == START ===\n"); if(max_streams <= 0) goto len_err_out; stream_count = AV_RL16(ptr); ptr += sizeof(uint16_t); if(stream_count > max_streams) stream_count = max_streams; if(stream_count > 0) streams = malloc(2*stream_count*sizeof(uint32_t)); mp_msg(MSGT_HEADER,MSGL_V," stream count=[0x%x][%u]\n", stream_count, stream_count ); for( i=0 ; i<stream_count ; i++ ) { stream_id = AV_RL16(ptr); ptr += sizeof(uint16_t); max_bitrate = AV_RL32(ptr); ptr += sizeof(uint32_t); mp_msg(MSGT_HEADER,MSGL_V," stream id=[0x%x][%u]\n", stream_id, stream_id ); mp_msg(MSGT_HEADER,MSGL_V," max bitrate=[0x%x][%u]\n", max_bitrate, max_bitrate ); streams[2*i] = stream_id; streams[2*i+1] = max_bitrate; } mp_msg(MSGT_HEADER,MSGL_V,"============ ASF Stream group == END ===\n"); } free(hdr); hdr = NULL; start = stream_tell(demuxer->stream); // start of first data chunk stream_read(demuxer->stream, guid_buffer, 16); if (memcmp(guid_buffer, asf_data_chunk_guid, 16) != 0) { mp_msg(MSGT_HEADER, MSGL_FATAL, MSGTR_MPDEMUX_ASFHDR_NoDataChunkAfterHeader); free(streams); streams = NULL; return 0; } // read length of chunk data_len = stream_read_qword_le(demuxer->stream); demuxer->movi_start = stream_tell(demuxer->stream) + 26; demuxer->movi_end = start + data_len; mp_msg(MSGT_HEADER, MSGL_V, "Found movie at 0x%X - 0x%X\n", (int)demuxer->movi_start, (int)demuxer->movi_end); if(streams) { // stream selection is done in the network code, it shouldn't be done here // as the servers often do not care about what we requested. #if 0 uint32_t vr = 0, ar = 0,i; #ifdef CONFIG_NETWORKING if( demuxer->stream->streaming_ctrl!=NULL ) { if( demuxer->stream->streaming_ctrl->bandwidth!=0 && demuxer->stream->streaming_ctrl->data!=NULL ) { best_audio = ((asf_http_streaming_ctrl_t*)demuxer->stream->streaming_ctrl->data)->audio_id; best_video = ((asf_http_streaming_ctrl_t*)demuxer->stream->streaming_ctrl->data)->video_id; } } else #endif for(i = 0; i < stream_count; i++) { uint32_t id = streams[2*i]; uint32_t rate = streams[2*i+1]; if(demuxer->v_streams[id] && rate > vr) { vr = rate; best_video = id; } else if(demuxer->a_streams[id] && rate > ar) { ar = rate; best_audio = id; } } #endif free(streams); streams = NULL; } mp_msg(MSGT_HEADER,MSGL_V,"ASF: %d audio and %d video streams found\n",audio_streams,video_streams); if(!audio_streams) demuxer->audio->id=-2; // nosound else if(best_audio > 0 && demuxer->audio->id == -1) demuxer->audio->id=best_audio; if(!video_streams){ if(!audio_streams){ mp_msg(MSGT_HEADER,MSGL_ERR,MSGTR_MPDEMUX_ASFHDR_AudioVideoHeaderNotFound); return 0; } demuxer->video->id=-2; // audio-only } else if (best_video > 0 && demuxer->video->id == -1) demuxer->video->id = best_video; #if 0 if( mp_msg_test(MSGT_HEADER,MSGL_V) ){ 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 return 1; len_err_out: mp_msg(MSGT_HEADER, MSGL_FATAL, MSGTR_MPDEMUX_ASFHDR_InvalidLengthInASFHeader); err_out: if (hdr) free(hdr); if (streams) free(streams); return 0; }
int read_asf_header(struct fidinfo *fidinfo, struct statex *statex, FILE *fp) { static unsigned char buffer[2048]; char tagvalue[256]; int pos, endpos; char *string = NULL; int bitrate = 0; int channels = 0; int duration; int samplerate; char *text_buf; while(!feof(fp)) { pos = ftell(fp); fread((char*) &objh, sizeof(objh), 1, fp); le2me_ASF_obj_header_t(&objh); if (feof(fp)) break; endpos = pos + objh.size; switch(ASF_LOAD_GUID_PREFIX(objh.guid)) { case ASF_GUID_PREFIX_file_header: /* get bitrate and duration from this header */ fread((char*) &fileh, sizeof(fileh), 1, fp); le2me_ASF_file_header_t(&fileh); bitrate = (int)(fileh.max_bitrate / 1000); duration = (int)(fileh.play_duration / 10000 - fileh.preroll); sprintf(tagvalue, "%d", duration); fidinfo->tagvalues[TAG_DURATION_NUM] = strdup(tagvalue); break; case ASF_GUID_PREFIX_content_desc: /* get title, artist and comment from this header */ fread((char*) &contenth, sizeof(contenth), 1, fp); le2me_ASF_content_description_t(&contenth); /* title */ if (contenth.title_size != 0) { string = (char*)malloc(contenth.title_size); fread(string, contenth.title_size, 1, fp); if (contenth.title_size) fidinfo->tagvalues[TAG_TITLE_NUM] = strdup(utf16tointernal(string, contenth.title_size)); } /* author */ if (contenth.author_size != 0) { string = (char*)realloc((void*)string, contenth.author_size); fread(string, contenth.author_size, 1, fp); if (contenth.author_size) fidinfo->tagvalues[TAG_ARTIST_NUM] = strdup(utf16tointernal(string, contenth.author_size)); } /* copyright */ if (contenth.copyright_size != 0) { string = (char*)realloc((void*)string, contenth.copyright_size); fread(string, contenth.copyright_size, 1, fp); /* ignore */ } /* comment */ if (contenth.comment_size != 0) { string = (char*)realloc((void*)string, contenth.comment_size); fread(string, contenth.comment_size, 1, fp); if (contenth.comment_size) fidinfo->tagvalues[TAG_COMMENT_NUM] = nullifempty(strdup(utf16tointernal(string, contenth.comment_size))); } /* rating */ if (contenth.rating_size != 0) { string = (char*)realloc((void*)string, contenth.rating_size); fread(string, contenth.rating_size, 1, fp); /* ignore */ } free(string); break; case ASF_GUID_PREFIX_stream_header: /* get number of channels and samplerate from this header */ fread((char*) &streamh, sizeof(streamh), 1, fp); le2me_ASF_stream_header_t(&streamh); if (streamh.type_size > 2048 || streamh.stream_size > 2048) { fprintf(stderr, "%s: ASF header size bigger than 2048 bytes (%d, %d)!\n" "Please contact %s authors, and upload/send this file.\n", progopts.progname, (int)streamh.type_size, (int)streamh.stream_size, progopts.progname); return 0; } fread((char*) buffer, streamh.type_size, 1, fp); if (ASF_LOAD_GUID_PREFIX(streamh.type) == ASF_GUID_PREFIX_audio_stream) { memcpy(&wfh, buffer, sizeof(ASF_waveformatex_t)); le2me_ASF_waveformatex_t(wfh); channels = (int) wfh.nChannels; samplerate = (int) wfh.nSamplesPerSec; sprintf(tagvalue, "%d", samplerate); fidinfo->tagvalues[TAG_SAMPLERATE_NUM] = strdup(tagvalue); } break; case ASF_GUID_PREFIX_text_tags: /* get id3-like tags from this header */ text_buf = (char*) malloc(objh.size); fread((char*) text_buf, objh.size, 1, fp); extract_tags(fidinfo, text_buf, objh.size); free(text_buf); break; case ASF_GUID_PREFIX_unknown_drm_1: /* if this header exists, then the tune is drm-protected */ fidinfo->tagvalues[TAG_DRM_NUM] = "msasf"; break; } fseek(fp, endpos, SEEK_SET); } /* codec */ fidinfo->tagvalues[TAG_CODEC_NUM] = "wma"; /* offset */ fidinfo->tagvalues[TAG_OFFSET_NUM] = "0"; /* trailer */ fidinfo->tagvalues[TAG_TRAILER_NUM] = "0"; /* bitrate */ sprintf(tagvalue, "f%s%d", channels > 1 ? "s" : "m", bitrate); fidinfo->tagvalues[TAG_BITRATE_NUM] = strdup(tagvalue); /* rid */ fidinfo->tagvalues[TAG_RID_NUM] = calculaterid(fp, 0, statex->size); return 1; }