// .asf fileformat docs from http://divx.euro.ru #include #include #include #include "config.h" #include "libavutil/common.h" #include "libavutil/intreadwrite.h" #include "mp_msg.h" #include "help_mp.h" #include "stream/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) AV_RL32(guid) #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 #define ASF_GUID_PREFIX_stream_group 0x7bf875ce #define ASF_GUID_PREFIX_ext_audio_stream 0x31178C9D #define ASF_GUID_PREFIX_ext_stream_embed_stream_header 0x3AFB65E2 /* const char asf_audio_stream_guid[16] = {0x40, 0x9e, 0x69, 0xf8, 0x4d, 0x5b, 0xcf, 0x11, 0xa8, 0xfd, 0x00, 0x80, 0x5f, 0x5c, 0x44, 0x2b}; const char asf_video_stream_guid[16] = {0xc0, 0xef, 0x19, 0xbc, 0x4d, 0x5b, 0xcf, 0x11, 0xa8, 0xfd, 0x00, 0x80, 0x5f, 0x5c, 0x44, 0x2b}; */ const char asf_stream_header_guid[16] = {0x91, 0x07, 0xdc, 0xb7, 0xb7, 0xa9, 0xcf, 0x11, 0x8e, 0xe6, 0x00, 0xc0, 0x0c, 0x20, 0x53, 0x65}; const char asf_file_header_guid[16] = {0xa1, 0xdc, 0xab, 0x8c, 0x47, 0xa9, 0xcf, 0x11, 0x8e, 0xe4, 0x00, 0xc0, 0x0c, 0x20, 0x53, 0x65}; const char asf_content_desc_guid[16] = {0x33, 0x26, 0xb2, 0x75, 0x8e, 0x66, 0xcf, 0x11, 0xa6, 0xd9, 0x00, 0xaa, 0x00, 0x62, 0xce, 0x6c}; const char asf_stream_group_guid[16] = {0xce, 0x75, 0xf8, 0x7b, 0x8d, 0x46, 0xd1, 0x11, 0x8d, 0x82, 0x00, 0x60, 0x97, 0xc9, 0xa2, 0xb2}; const char asf_data_chunk_guid[16] = {0x36, 0x26, 0xb2, 0x75, 0x8e, 0x66, 0xcf, 0x11, 0xa6, 0xd9, 0x00, 0xaa, 0x00, 0x62, 0xce, 0x6c}; const char asf_ext_stream_embed_stream_header[16] = {0xe2, 0x65, 0xfb, 0x3a, 0xef, 0x47, 0xf2, 0x40, 0xac, 0x2c, 0x70, 0xa9, 0x0d, 0x71, 0xd3, 0x43}; const char asf_ext_stream_audio[16] = {0x9d, 0x8c, 0x17, 0x31, 0xe1, 0x03, 0x28, 0x45, 0xb5, 0x82, 0x3d, 0xf9, 0xdb, 0x22, 0xf5, 0x03}; const char asf_ext_stream_header[16] = {0xCB, 0xA5, 0xE6, 0x14, 0x72, 0xC6, 0x32, 0x43, 0x83, 0x99, 0xA9, 0x69, 0x52, 0x06, 0x5B, 0x5A}; const char asf_metadata_header[16] = {0xea, 0xcb, 0xf8, 0xc5, 0xaf, 0x5b, 0x77, 0x48, 0x84, 0x67, 0xaa, 0x8c, 0x44, 0xfa, 0x4c, 0xca}; const char asf_content_encryption[16] = {0xfb, 0xb3, 0x11, 0x22, 0x23, 0xbd, 0xd2, 0x11, 0xb4, 0xb7, 0x00, 0xa0, 0xc9, 0x55, 0xfc, 0x6e}; typedef struct { // must be 0 for metadata record, might be non-zero for metadata lib record uint16_t lang_list_index; uint16_t stream_num; uint16_t name_length; uint16_t data_type; uint32_t data_length; uint16_t* name; void* data; } ASF_meta_record_t; static char* get_ucs2str(const uint16_t* inbuf, uint16_t inlen) { char* outbuf = calloc(inlen, 2); char* q; int i; if (!outbuf) { mp_msg(MSGT_HEADER, MSGL_ERR, MSGTR_MemAllocFailed); return NULL; } q = outbuf; for (i = 0; i < inlen / 2; i++) { uint8_t tmp; PUT_UTF8(le2me_16(inbuf[i]), tmp, *q++ = tmp;) } return outbuf; } 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"; 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}; struct asf_priv* asf = calloc(1,sizeof(*asf)); asf->scrambling_h=asf->scrambling_w=asf->scrambling_b=1; stream_read(demuxer->stream,(char*) &asf->header,sizeof(asf->header)); // header obj le2me_ASF_header_t(&asf->header); // 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,asf->header.objh.guid,16)){ mp_msg(MSGT_HEADER,MSGL_V,"ASF_check: not ASF guid!\n"); free(asf); return 0; // not ASF guid } if(asf->header.cno>256){ mp_msg(MSGT_HEADER,MSGL_V,"ASF_check: invalid subchunks_no %d\n",(int) asf->header.cno); free(asf); return 0; // invalid header??? } demuxer->priv = asf; return DEMUXER_TYPE_ASF; } extern void print_wave_header(WAVEFORMATEX *h, int verbose_level); extern void print_video_header(BITMAPINFOHEADER *h, int verbose_level); int find_asf_guid(char *buf, const char *guid, int cur_pos, int buf_len) { int i; for (i = cur_pos; i < buf_len - 19; i++) { if (memcmp(&buf[i], guid, 16) == 0) return i + 16 + 8; // point after guid + length } return -1; } static int find_backwards_asf_guid(char *buf, const char *guid, int cur_pos) { int i; for (i=cur_pos-16; i>0; i--) { if (memcmp(&buf[i], guid, 16) == 0) return i + 16 + 8; // point after guid + length } return -1; } static int get_ext_stream_properties(char *buf, int buf_len, int stream_num, double* avg_frame_time) { // this function currently only gets the average frame time if available int pos=0; uint8_t *buffer = &buf[0]; uint64_t avg_ft; while ((pos = find_asf_guid(buf, asf_ext_stream_header, pos, buf_len)) >= 0) { int this_stream_num, stnamect, payct, i, objlen; buffer = &buf[pos]; // the following info is available // some of it may be useful but we're skipping it for now // starttime(8 bytes), endtime(8), // leak-datarate(4), bucket-datasize(4), init-bucket-fullness(4), // alt-leak-datarate(4), alt-bucket-datasize(4), alt-init-bucket-fullness(4), // max-object-size(4), // flags(4) (reliable,seekable,no_cleanpoints?,resend-live-cleanpoints, rest of bits reserved) buffer +=8+8+4+4+4+4+4+4+4+4; this_stream_num=AV_RL16(buffer);buffer+=2; if (this_stream_num == stream_num) { buffer+=2; //skip stream-language-id-index avg_ft = AV_RL32(buffer) | (uint64_t)AV_RL32(buffer + 4) << 32; // provided in 100ns units *avg_frame_time = avg_ft/10000000.0f; // after this are values for stream-name-count and // payload-extension-system-count // followed by associated info for each return 1; } } return 0; } #define CHECKDEC(l, n) if (((l) -= (n)) < 0) return 0 static char* read_meta_record(ASF_meta_record_t* dest, char* buf, int* buf_len) { CHECKDEC(*buf_len, 2 + 2 + 2 + 2 + 4); dest->lang_list_index = AV_RL16(buf); dest->stream_num = AV_RL16(&buf[2]); dest->name_length = AV_RL16(&buf[4]); dest->data_type = AV_RL16(&buf[6]); dest->data_length = AV_RL32(&buf[8]); buf += 2 + 2 + 2 + 2 + 4; CHECKDEC(*buf_len, dest->name_length); dest->name = (uint16_t*)buf; buf += dest->name_length; CHECKDEC(*buf_len, dest->data_length); dest->data = buf; buf += dest->data_length; return buf; } static int get_meta(char *buf, int buf_len, int this_stream_num, float* asp_ratio) { int pos = 0; uint16_t records_count; uint16_t x = 0, y = 0; if ((pos = find_asf_guid(buf, asf_metadata_header, pos, buf_len)) < 0) return 0; CHECKDEC(buf_len, pos); buf += pos; CHECKDEC(buf_len, 2); records_count = AV_RL16(buf); buf += 2; while (records_count--) { ASF_meta_record_t record_entry; char* name; if (!(buf = read_meta_record(&record_entry, buf, &buf_len))) return 0; /* reserved, must be zero */ if (record_entry.lang_list_index) continue; /* match stream number: 0 to match all */ if (record_entry.stream_num && record_entry.stream_num != this_stream_num) continue; if (!(name = get_ucs2str(record_entry.name, record_entry.name_length))) { mp_msg(MSGT_HEADER, MSGL_ERR, MSGTR_MemAllocFailed); continue; } if (strcmp(name, "AspectRatioX") == 0) x = AV_RL16(record_entry.data); else if (strcmp(name, "AspectRatioY") == 0) y = AV_RL16(record_entry.data); free(name); } if (x && y) { *asp_ratio = (float)x / (float)y; return 1; } return 0; } static int is_drm(char* buf, int buf_len) { uint32_t data_len, type_len, key_len, url_len; int pos = find_asf_guid(buf, asf_content_encryption, 0, buf_len); if (pos < 0) return 0; CHECKDEC(buf_len, pos + 4); buf += pos; data_len = AV_RL32(buf); buf += 4; CHECKDEC(buf_len, data_len); buf += data_len; type_len = AV_RL32(buf); if (type_len < 4) return 0; CHECKDEC(buf_len, 4 + type_len + 4); buf += 4; if (buf[0] != 'D' || buf[1] != 'R' || buf[2] != 'M' || buf[3] != '\0') return 0; buf += type_len; key_len = AV_RL32(buf); CHECKDEC(buf_len, key_len + 4); buf += 4; buf[key_len - 1] = '\0'; mp_msg(MSGT_HEADER, MSGL_V, "DRM Key ID: %s\n", buf); buf += key_len; url_len = AV_RL32(buf); CHECKDEC(buf_len, url_len); buf += 4; buf[url_len - 1] = '\0'; mp_msg(MSGT_HEADER, MSGL_INFO, MSGTR_MPDEMUX_ASFHDR_DRMLicenseURL, buf); return 1; } 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_sizetype_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; } 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); ++audio_streams; if (!asf_init_audio_stream(demuxer, asf, sh_audio, streamh, &audio_pos, &buffer, hdr, hdr_len)) 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); ++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: { sh_video_t* sh_video=new_sh_video(demuxer,streamh->stream_no & 0x7F); unsigned int len=streamh->type_size-(4+4+1+2); float asp_ratio; ++video_streams; // sh_video->bih=malloc(chunksize); memset(sh_video->bih,0,chunksize); sh_video->bih=calloc((lenbih,&buffer[4+4+1+2],len); le2me_BITMAPINFOHEADER(sh_video->bih); if (sh_video->bih->biSize > len && sh_video->bih->biSize > sizeof(BITMAPINFOHEADER)) 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->avg_vid_frame_time)) { sh_video->frametime=(float)asf->avg_vid_frame_time; sh_video->fps=1.0f/sh_video->frametime; } else { asf->avg_vid_frame_time=0.0; // only used for dvr-ms when > 0.0 sh_video->fps=1000.0f; sh_video->frametime=0.001f; } if (get_meta(hdr, hdr_len, streamh->stream_no, &asp_ratio)) { sh_video->aspect = asp_ratio * sh_video->bih->biWidth / sh_video->bih->biHeight; } 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->send_duration/10000000LL; } // 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, "name", 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) { uint16_t stream_id, i; uint32_t max_bitrate; char *ptr = &hdr[pos]; mp_msg(MSGT_HEADER,MSGL_V,"============ ASF Stream group == START ===\n"); stream_count = AV_RL16(ptr); ptr += sizeof(uint16_t); if (ptr > &hdr[hdr_len]) goto len_err_out; 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 &hdr[hdr_len]) goto len_err_out; memcpy(&max_bitrate, ptr, sizeof(uint32_t));// workaround unaligment bug on sparc max_bitrate = le2me_32(max_bitrate); ptr += sizeof(uint32_t); if (ptr > &hdr[hdr_len]) goto len_err_out; 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 stream_read(demuxer->stream, (char *)&data_len, sizeof(data_len)); data_len = le2me_64(data_len); 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 MPLAYER_NETWORK 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; }