static int asf_init_audio_stream(demuxer_t *demuxer,struct asf_priv* asf, sh_audio_t* sh_audio, ASF_stream_header_t *streamh, int *ppos, uint8_t** buf, char *hdr, unsigned int hdr_len) { uint8_t *buffer = *buf; int pos = *ppos; sh_audio->wf=calloc((streamh->type_size<sizeof(*sh_audio->wf))?sizeof(*sh_audio->wf):streamh->type_size,1); memcpy(sh_audio->wf,buffer,streamh->type_size); le2me_WAVEFORMATEX(sh_audio->wf); if( mp_msg_test(MSGT_HEADER,MSGL_V) ) print_wave_header(sh_audio->wf,MSGL_V); if(ASF_LOAD_GUID_PREFIX(streamh->concealment)==ASF_GUID_PREFIX_audio_conceal_interleave){ buffer = &hdr[pos]; pos += streamh->stream_size; if (pos > hdr_len) return 0; asf->scrambling_h=buffer[0]; asf->scrambling_w=(buffer[2]<<8)|buffer[1]; asf->scrambling_b=(buffer[4]<<8)|buffer[3]; if(asf->scrambling_b>0){ 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); return 1; }
static int asf_header_check( HTTP_header_t *http_hdr ) { ASF_obj_header_t *objh; if( http_hdr==NULL ) return -1; if( http_hdr->body==NULL || http_hdr->body_size<sizeof(ASF_obj_header_t) ) return -1; objh = (ASF_obj_header_t*)http_hdr->body; if( ASF_LOAD_GUID_PREFIX(objh->guid)==0x75B22630 ) return 0; return -1; }
static const 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_ext_audio_stream: return "guid_ext_audio_stream"; case ASF_GUID_PREFIX_ext_stream_embed_stream_header: return "guid_ext_stream_embed_stream_header"; 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"; case ASF_GUID_PREFIX_dvr_ms_timing_rep_data: return "guid_dvr_ms_timing_rep_data"; case ASF_GUID_PREFIX_dvr_ms_vid_frame_rep_data: return "guid_dvr_ms_vid_frame_rep_data"; 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 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; }
static int asf_streaming_parse_header(int fd, streaming_ctrl_t* streaming_ctrl) { ASF_stream_chunck_t chunk; asf_http_streaming_ctrl_t* asf_ctrl = streaming_ctrl->data; char* buffer=NULL, *chunk_buffer=NULL; int i,r,size,pos = 0; int start; int buffer_size = 0; int chunk_size2read = 0; int bw = streaming_ctrl->bandwidth; int *v_rates = NULL, *a_rates = NULL; int v_rate = 0, a_rate = 0, a_idx = -1, v_idx = -1; if(asf_ctrl == NULL) return -1; // The ASF header can be in several network chunks. For example if the content description // is big, the ASF header will be split in 2 network chunk. // So we need to retrieve all the chunk before starting to parse the header. do { if (asf_read_wrapper(fd, &chunk, sizeof(ASF_stream_chunck_t), streaming_ctrl) <= 0) return -1; // Endian handling of the stream chunk le2me_ASF_stream_chunck_t(&chunk); size = asf_streaming( &chunk, &r) - sizeof(ASF_stream_chunck_t); if(r) mp_msg(MSGT_NETWORK,MSGL_WARN,MSGTR_MPDEMUX_ASF_WarnDropHeader); if(size < 0){ mp_msg(MSGT_NETWORK,MSGL_ERR,MSGTR_MPDEMUX_ASF_ErrorParsingChunkHeader); return -1; } if (chunk.type != ASF_STREAMING_HEADER) { mp_msg(MSGT_NETWORK,MSGL_ERR,MSGTR_MPDEMUX_ASF_NoHeaderAtFirstChunk); return -1; } // audit: do not overflow buffer_size if (size > SIZE_MAX - buffer_size) return -1; buffer = malloc(size+buffer_size); if(buffer == NULL) { mp_msg(MSGT_NETWORK,MSGL_FATAL,MSGTR_MPDEMUX_ASF_BufferMallocFailed,size+buffer_size); return -1; } if( chunk_buffer!=NULL ) { memcpy( buffer, chunk_buffer, buffer_size ); free( chunk_buffer ); } chunk_buffer = buffer; buffer += buffer_size; buffer_size += size; if (asf_read_wrapper(fd, buffer, size, streaming_ctrl) <= 0) return -1; if( chunk_size2read==0 ) { ASF_header_t *asfh = (ASF_header_t *)buffer; if(size < (int)sizeof(ASF_header_t)) { mp_msg(MSGT_NETWORK,MSGL_ERR,MSGTR_MPDEMUX_ASF_ErrChunk2Small); return -1; } else mp_msg(MSGT_NETWORK,MSGL_DBG2,"Got chunk\n"); chunk_size2read = AV_RL64(&asfh->objh.size); mp_msg(MSGT_NETWORK,MSGL_DBG2,"Size 2 read=%d\n", chunk_size2read); } } while( buffer_size<chunk_size2read); buffer = chunk_buffer; size = buffer_size; start = sizeof(ASF_header_t); pos = find_asf_guid(buffer, asf_file_header_guid, start, size); if (pos >= 0) { ASF_file_header_t *fileh = (ASF_file_header_t *) &buffer[pos]; pos += sizeof(ASF_file_header_t); if (pos > size) goto len_err_out; /* if(fileh.packetsize != fileh.packetsize2) { printf("Error packetsize check don't match\n"); return -1; } */ asf_ctrl->packet_size = AV_RL32(&fileh->max_packet_size); // before playing. // preroll: time in ms to bufferize before playing streaming_ctrl->prebuffer_size = (unsigned int)(((double)fileh->preroll/1000.0)*((double)fileh->max_bitrate/8.0)); } pos = start; while ((pos = find_asf_guid(buffer, asf_stream_header_guid, pos, size)) >= 0) { ASF_stream_header_t *streamh = (ASF_stream_header_t *)&buffer[pos]; pos += sizeof(ASF_stream_header_t); if (pos > size) goto len_err_out; switch(ASF_LOAD_GUID_PREFIX(streamh->type)) { case 0xF8699E40 : // audio stream if(asf_ctrl->audio_streams == NULL){ asf_ctrl->audio_streams = malloc(sizeof(int)); asf_ctrl->n_audio = 1; } else { asf_ctrl->n_audio++; asf_ctrl->audio_streams = realloc(asf_ctrl->audio_streams, asf_ctrl->n_audio*sizeof(int)); } asf_ctrl->audio_streams[asf_ctrl->n_audio-1] = AV_RL16(&streamh->stream_no); break; case 0xBC19EFC0 : // video stream if(asf_ctrl->video_streams == NULL){ asf_ctrl->video_streams = malloc(sizeof(int)); asf_ctrl->n_video = 1; } else { asf_ctrl->n_video++; asf_ctrl->video_streams = realloc(asf_ctrl->video_streams, asf_ctrl->n_video*sizeof(int)); } asf_ctrl->video_streams[asf_ctrl->n_video-1] = AV_RL16(&streamh->stream_no); break; } } // always allocate to avoid lots of ifs later v_rates = calloc(asf_ctrl->n_video, sizeof(int)); a_rates = calloc(asf_ctrl->n_audio, sizeof(int)); pos = find_asf_guid(buffer, asf_stream_group_guid, start, size); if (pos >= 0) { // stream bitrate properties object int stream_count; char *ptr = &buffer[pos]; char *end = &buffer[size]; mp_msg(MSGT_NETWORK, MSGL_V, "Stream bitrate properties object\n"); if (ptr + 2 > end) goto len_err_out; stream_count = AV_RL16(ptr); ptr += 2; mp_msg(MSGT_NETWORK, MSGL_V, " stream count=[0x%x][%u]\n", stream_count, stream_count ); for( i=0 ; i<stream_count ; i++ ) { uint32_t rate; int id; int j; if (ptr + 6 > end) goto len_err_out; id = AV_RL16(ptr); ptr += 2; rate = AV_RL32(ptr); ptr += 4; mp_msg(MSGT_NETWORK, MSGL_V, " stream id=[0x%x][%u]\n", id, id); mp_msg(MSGT_NETWORK, MSGL_V, " max bitrate=[0x%x][%u]\n", rate, rate); for (j = 0; j < asf_ctrl->n_video; j++) { if (id == asf_ctrl->video_streams[j]) { mp_msg(MSGT_NETWORK, MSGL_V, " is video stream\n"); v_rates[j] = rate; break; } } for (j = 0; j < asf_ctrl->n_audio; j++) { if (id == asf_ctrl->audio_streams[j]) { mp_msg(MSGT_NETWORK, MSGL_V, " is audio stream\n"); a_rates[j] = rate; break; } } } } free(buffer); // automatic stream selection based on bandwidth if (bw == 0) bw = INT_MAX; mp_msg(MSGT_NETWORK, MSGL_V, "Max bandwidth set to %d\n", bw); if (asf_ctrl->n_audio) { // find lowest-bitrate audio stream a_rate = a_rates[0]; a_idx = 0; for (i = 0; i < asf_ctrl->n_audio; i++) { if (a_rates[i] < a_rate) { a_rate = a_rates[i]; a_idx = i; } } if (max_idx(asf_ctrl->n_video, v_rates, bw - a_rate) < 0) { // both audio and video are not possible, try video only next a_idx = -1; a_rate = 0; } } // find best video stream v_idx = max_idx(asf_ctrl->n_video, v_rates, bw - a_rate); if (v_idx >= 0) v_rate = v_rates[v_idx]; // find best audio stream a_idx = max_idx(asf_ctrl->n_audio, a_rates, bw - v_rate); free(v_rates); free(a_rates); if (a_idx < 0 && v_idx < 0) { mp_msg(MSGT_NETWORK, MSGL_FATAL, MSGTR_MPDEMUX_ASF_Bandwidth2SmallCannotPlay); return -1; } if (audio_id > 0) // a audio stream was forced asf_ctrl->audio_id = audio_id; else if (a_idx >= 0) asf_ctrl->audio_id = asf_ctrl->audio_streams[a_idx]; else if (asf_ctrl->n_audio) { mp_msg(MSGT_NETWORK, MSGL_WARN, MSGTR_MPDEMUX_ASF_Bandwidth2SmallDeselectedAudio); audio_id = -2; } if (video_id > 0) // a video stream was forced asf_ctrl->video_id = video_id; else if (v_idx >= 0) asf_ctrl->video_id = asf_ctrl->video_streams[v_idx]; else if (asf_ctrl->n_video) { mp_msg(MSGT_NETWORK, MSGL_WARN, MSGTR_MPDEMUX_ASF_Bandwidth2SmallDeselectedVideo); video_id = -2; } return 1; len_err_out: mp_msg(MSGT_NETWORK, MSGL_FATAL, MSGTR_MPDEMUX_ASF_InvalidLenInHeader); free(buffer); free(v_rates); free(a_rates); return -1; }