?? ffserver.c
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ByteIOContext pb1, *pb = &pb1; if (url_open_dyn_buf(pb) < 0) { /* XXX: return an error ? */ c->buffer_ptr = c->buffer; c->buffer_end = c->buffer; return; } url_fprintf(pb, "HTTP/1.0 200 OK\r\n"); url_fprintf(pb, "Content-type: %s\r\n", "text/html"); url_fprintf(pb, "Pragma: no-cache\r\n"); url_fprintf(pb, "\r\n"); url_fprintf(pb, "<HEAD><TITLE>FFServer Status</TITLE>\n"); if (c->stream->feed_filename) { url_fprintf(pb, "<link rel=\"shortcut icon\" href=\"%s\">\n", c->stream->feed_filename); } url_fprintf(pb, "</HEAD>\n<BODY>"); url_fprintf(pb, "<H1>FFServer Status</H1>\n"); /* format status */ url_fprintf(pb, "<H2>Available Streams</H2>\n"); url_fprintf(pb, "<TABLE cellspacing=0 cellpadding=4>\n"); url_fprintf(pb, "<TR><Th valign=top>Path<th align=left>Served<br>Conns<Th><br>bytes<Th valign=top>Format<Th>Bit rate<br>kbits/s<Th align=left>Video<br>kbits/s<th><br>Codec<Th align=left>Audio<br>kbits/s<th><br>Codec<Th align=left valign=top>Feed\n"); stream = first_stream; while (stream != NULL) { char sfilename[1024]; char *eosf; if (stream->feed != stream) { pstrcpy(sfilename, sizeof(sfilename) - 10, stream->filename); eosf = sfilename + strlen(sfilename); if (eosf - sfilename >= 4) { if (strcmp(eosf - 4, ".asf") == 0) { strcpy(eosf - 4, ".asx"); } else if (strcmp(eosf - 3, ".rm") == 0) { strcpy(eosf - 3, ".ram"); } else if (stream->fmt == &rtp_mux) { /* generate a sample RTSP director if unicast. Generate an SDP redirector if multicast */ eosf = strrchr(sfilename, '.'); if (!eosf) eosf = sfilename + strlen(sfilename); if (stream->is_multicast) strcpy(eosf, ".sdp"); else strcpy(eosf, ".rtsp"); } } url_fprintf(pb, "<TR><TD><A HREF=\"/%s\">%s</A> ", sfilename, stream->filename); url_fprintf(pb, "<td align=right> %d <td align=right> ", stream->conns_served); fmt_bytecount(pb, stream->bytes_served); switch(stream->stream_type) { case STREAM_TYPE_LIVE: { int audio_bit_rate = 0; int video_bit_rate = 0; const char *audio_codec_name = ""; const char *video_codec_name = ""; const char *audio_codec_name_extra = ""; const char *video_codec_name_extra = ""; for(i=0;i<stream->nb_streams;i++) { AVStream *st = stream->streams[i]; AVCodec *codec = avcodec_find_encoder(st->codec->codec_id); switch(st->codec->codec_type) { case CODEC_TYPE_AUDIO: audio_bit_rate += st->codec->bit_rate; if (codec) { if (*audio_codec_name) audio_codec_name_extra = "..."; audio_codec_name = codec->name; } break; case CODEC_TYPE_VIDEO: video_bit_rate += st->codec->bit_rate; if (codec) { if (*video_codec_name) video_codec_name_extra = "..."; video_codec_name = codec->name; } break; case CODEC_TYPE_DATA: video_bit_rate += st->codec->bit_rate; break; default: av_abort(); } } url_fprintf(pb, "<TD align=center> %s <TD align=right> %d <TD align=right> %d <TD> %s %s <TD align=right> %d <TD> %s %s", stream->fmt->name, stream->bandwidth, video_bit_rate / 1000, video_codec_name, video_codec_name_extra, audio_bit_rate / 1000, audio_codec_name, audio_codec_name_extra); if (stream->feed) { url_fprintf(pb, "<TD>%s", stream->feed->filename); } else { url_fprintf(pb, "<TD>%s", stream->feed_filename); } url_fprintf(pb, "\n"); } break; default: url_fprintf(pb, "<TD align=center> - <TD align=right> - <TD align=right> - <td><td align=right> - <TD>\n"); break; } } stream = stream->next; } url_fprintf(pb, "</TABLE>\n"); stream = first_stream; while (stream != NULL) { if (stream->feed == stream) { url_fprintf(pb, "<h2>Feed %s</h2>", stream->filename); if (stream->pid) { url_fprintf(pb, "Running as pid %d.\n", stream->pid);#if defined(linux) && !defined(CONFIG_NOCUTILS) { FILE *pid_stat; char ps_cmd[64]; /* This is somewhat linux specific I guess */ snprintf(ps_cmd, sizeof(ps_cmd), "ps -o \"%%cpu,cputime\" --no-headers %d", stream->pid); pid_stat = popen(ps_cmd, "r"); if (pid_stat) { char cpuperc[10]; char cpuused[64]; if (fscanf(pid_stat, "%10s %64s", cpuperc, cpuused) == 2) { url_fprintf(pb, "Currently using %s%% of the cpu. Total time used %s.\n", cpuperc, cpuused); } fclose(pid_stat); } }#endif url_fprintf(pb, "<p>"); } url_fprintf(pb, "<table cellspacing=0 cellpadding=4><tr><th>Stream<th>type<th>kbits/s<th align=left>codec<th align=left>Parameters\n"); for (i = 0; i < stream->nb_streams; i++) { AVStream *st = stream->streams[i]; AVCodec *codec = avcodec_find_encoder(st->codec->codec_id); const char *type = "unknown"; char parameters[64]; parameters[0] = 0; switch(st->codec->codec_type) { case CODEC_TYPE_AUDIO: type = "audio"; break; case CODEC_TYPE_VIDEO: type = "video"; snprintf(parameters, sizeof(parameters), "%dx%d, q=%d-%d, fps=%d", st->codec->width, st->codec->height, st->codec->qmin, st->codec->qmax, st->codec->time_base.den / st->codec->time_base.num); break; default: av_abort(); } url_fprintf(pb, "<tr><td align=right>%d<td>%s<td align=right>%d<td>%s<td>%s\n", i, type, st->codec->bit_rate/1000, codec ? codec->name : "", parameters); } url_fprintf(pb, "</table>\n"); } stream = stream->next; }#if 0 { float avg; AVCodecContext *enc; char buf[1024]; /* feed status */ stream = first_feed; while (stream != NULL) { url_fprintf(pb, "<H1>Feed '%s'</H1>\n", stream->filename); url_fprintf(pb, "<TABLE>\n"); url_fprintf(pb, "<TR><TD>Parameters<TD>Frame count<TD>Size<TD>Avg bitrate (kbits/s)\n"); for(i=0;i<stream->nb_streams;i++) { AVStream *st = stream->streams[i]; FeedData *fdata = st->priv_data; enc = st->codec; avcodec_string(buf, sizeof(buf), enc); avg = fdata->avg_frame_size * (float)enc->rate * 8.0; if (enc->codec->type == CODEC_TYPE_AUDIO && enc->frame_size > 0) avg /= enc->frame_size; url_fprintf(pb, "<TR><TD>%s <TD> %d <TD> %Ld <TD> %0.1f\n", buf, enc->frame_number, fdata->data_count, avg / 1000.0); } url_fprintf(pb, "</TABLE>\n"); stream = stream->next_feed; } }#endif /* connection status */ url_fprintf(pb, "<H2>Connection Status</H2>\n"); url_fprintf(pb, "Number of connections: %d / %d<BR>\n", nb_connections, nb_max_connections); url_fprintf(pb, "Bandwidth in use: %dk / %dk<BR>\n", current_bandwidth, max_bandwidth); url_fprintf(pb, "<TABLE>\n"); url_fprintf(pb, "<TR><th>#<th>File<th>IP<th>Proto<th>State<th>Target bits/sec<th>Actual bits/sec<th>Bytes transferred\n"); c1 = first_http_ctx; i = 0; while (c1 != NULL) { int bitrate; int j; bitrate = 0; if (c1->stream) { for (j = 0; j < c1->stream->nb_streams; j++) { if (!c1->stream->feed) { bitrate += c1->stream->streams[j]->codec->bit_rate; } else { if (c1->feed_streams[j] >= 0) { bitrate += c1->stream->feed->streams[c1->feed_streams[j]]->codec->bit_rate; } } } } i++; p = inet_ntoa(c1->from_addr.sin_addr); url_fprintf(pb, "<TR><TD><B>%d</B><TD>%s%s<TD>%s<TD>%s<TD>%s<td align=right>", i, c1->stream ? c1->stream->filename : "", c1->state == HTTPSTATE_RECEIVE_DATA ? "(input)" : "", p, c1->protocol, http_state[c1->state]); fmt_bytecount(pb, bitrate); url_fprintf(pb, "<td align=right>"); fmt_bytecount(pb, compute_datarate(&c1->datarate, c1->data_count) * 8); url_fprintf(pb, "<td align=right>"); fmt_bytecount(pb, c1->data_count); url_fprintf(pb, "\n"); c1 = c1->next; } url_fprintf(pb, "</TABLE>\n"); /* date */ ti = time(NULL); p = ctime(&ti); url_fprintf(pb, "<HR size=1 noshade>Generated at %s", p); url_fprintf(pb, "</BODY>\n</HTML>\n"); len = url_close_dyn_buf(pb, &c->pb_buffer); c->buffer_ptr = c->pb_buffer; c->buffer_end = c->pb_buffer + len;}/* check if the parser needs to be opened for stream i */static void open_parser(AVFormatContext *s, int i){ AVStream *st = s->streams[i]; AVCodec *codec; if (!st->codec->codec) { codec = avcodec_find_decoder(st->codec->codec_id); if (codec && (codec->capabilities & CODEC_CAP_PARSE_ONLY)) { st->codec->parse_only = 1; if (avcodec_open(st->codec, codec) < 0) { st->codec->parse_only = 0; } } }}static int open_input_stream(HTTPContext *c, const char *info){ char buf[128]; char input_filename[1024]; AVFormatContext *s; int buf_size, i; int64_t stream_pos; /* find file name */ if (c->stream->feed) { strcpy(input_filename, c->stream->feed->feed_filename); buf_size = FFM_PACKET_SIZE; /* compute position (absolute time) */ if (find_info_tag(buf, sizeof(buf), "date", info)) { stream_pos = parse_date(buf, 0); } else if (find_info_tag(buf, sizeof(buf), "buffer", info)) { int prebuffer = strtol(buf, 0, 10); stream_pos = av_gettime() - prebuffer * (int64_t)1000000; } else { stream_pos = av_gettime() - c->stream->prebuffer * (int64_t)1000; } } else { strcpy(input_filename, c->stream->feed_filename); buf_size = 0; /* compute position (relative time) */ if (find_info_tag(buf, sizeof(buf), "date", info)) { stream_pos = parse_date(buf, 1); } else { stream_pos = 0; } } if (input_filename[0] == '\0') return -1;#if 0 { time_t when = stream_pos / 1000000; http_log("Stream pos = %lld, time=%s", stream_pos, ctime(&when)); }#endif /* open stream */ if (av_open_input_file(&s, input_filename, c->stream->ifmt, buf_size, c->stream->ap_in) < 0) { http_log("%s not found", input_filename); return -1; } c->fmt_in = s; /* open each parser */ for(i=0;i<s->nb_streams;i++) open_parser(s, i); /* choose stream as clock source (we favorize video stream if present) for packet sending */ c->pts_stream_index = 0; for(i=0;i<c->stream->nb_streams;i++) { if (c->pts_stream_index == 0 && c->stream->streams[i]->codec->codec_type == CODEC_TYPE_VIDEO) { c->pts_stream_index = i; } }#if 1 if (c->fmt_in->iformat->read_seek) { c->fmt_in->iformat->read_seek(c->fmt_in, 0, stream_pos, 0); }#endif /* set the start time (needed for maxtime and RTP packet timing) */ c->start_time = cur_time; c->first_pts = AV_NOPTS_VALUE; return 0;}/* return the server clock (in us) */static int64_t get_server_clock(HTTPContext *c){ /* compute current pts value from system time */ return (int64_t)(cur_time - c->start_time) * 1000LL;}/* return the estimated time at which the current packet must be sent (in us) */static int64_t get_packet_send_clock(HTTPContext *c){ int bytes_left, bytes_sent, frame_bytes; frame_bytes = c->cur_frame_bytes; if (frame_bytes <= 0) { return c->cur_pts; } else { bytes_left = c->buffer_end - c->buffer_ptr; bytes_sent = frame_bytes - bytes_left; return c->cur_pts + (c->cur_frame_duration * bytes_sent) / frame_bytes; }}static int http_prepare_data(HTTPContext *c){ int i, len, ret; AVFormatContext *ctx; av_freep(&c->pb_buffer); switch(c->state) { case HTTPSTATE_SEND_DATA_HEADER: memset(&c->fmt_ctx, 0, sizeof(c->fmt_ctx)); pstrcpy(c->fmt_ctx.author, sizeof(c->fmt_ctx.author), c->?? 快捷鍵說明
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