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1 lines
9.8 KiB
1 lines
9.8 KiB
function H265SPSParser(){function a(){g=0,h=new Map}function b(){if(l>=k)return 0;var a=j[l++];return 0==a?(o++,k>l&&2==o&&3==j[l]&&(l++,o=0)):o=0,a}function c(){return 0==m&&(n=b(),m=8),m--,n>>m&1}function d(a,b){for(var d=0;b>0;)d<<=1,d|=c(),b--;return d}function e(){for(var a=0;k>l&&0==c();)a++;return d(null,a)+((1<<a)-1)}function f(a,b){if(a){h.put("general_profile_space",d(i,2)),h.put("general_tier_flag",d(i,1)),h.put("general_profile_idc",d(i,5));for(var c=new Array(32),e=0;32>e;e++)c[e]=d(i,1);h.put("general_progressive_source_flag",d(i,1)),h.put("general_interlaced_source_flag",d(i,1)),h.put("general_non_packed_constraint_flag",d(i,1)),h.put("general_frame_only_constraint_flag",d(i,1));var f=h.get("general_profile_idc");4===f||c[4]||5===f||c[5]||6===f||c[6]||7===f||c[7]||8===f||c[8]||9===f||c[9]||10===f||c[10]?(h.put("general_max_12bit_constraint_flag",d(i,1)),h.put("general_max_10bit_constraint_flag",d(i,1)),h.put("general_max_8bit_constraint_flag",d(i,1)),h.put("general_max_422chroma_constraint_flag",d(i,1)),h.put("general_max_420chroma_constraint_flag",d(i,1)),h.put("general_max_monochrome_constraint_flag",d(i,1)),h.put("general_intra_constraint_flag",d(i,1)),h.put("general_one_picture_only_constraint_flag",d(i,1)),h.put("general_lower_bit_rate_constraint_flag",d(i,1)),5===f||c[5]||9===f||c[9]||10===f||c[10]?(h.put("general_max_14bit_constraint_flag",d(i,1)),h.put("general_reserved_zero_33bits",d(i,33))):h.put("general_reserved_zero_34bits",d(i,34))):h.put("general_reserved_zero_43bits",d(i,43)),f>=1&&5>=f||c[1]||c[2]||c[3]||c[4]||c[5]||c[9]?h.put("general_inbld_flag",d(i,1)):h.put("general_reserved_zero_bit",d(i,1))}h.put("general_level_idc",d(i,8));var g=new Array(b),j=new Array(b);for(q=0;b>q;q++)g[q]=d(i,1),j[q]=d(i,1);var k=new Array(8),l=new Array(b),m=new Array(b),n=new Array(b),o=[],p=new Array(b);if(b>0)for(var q=b;8>q;q++)k[q]=d(i,2);for(var q=0;b>q;q++){if(g[q]){m[q]=d(i,2),n[q]=d(i,1),l[q]=d(i,5);for(var e=0;32>e;e++)o[q][e]=d(i,1);h.put("sub_layer_progressive_source_flag",d(i,1)),h.put("sub_layer_interlaced_source_flag",d(i,1)),h.put("sub_layer_non_packed_constraint_flag",d(i,1)),h.put("sub_layer_frame_only_constraint_flag",d(i,1)),4===l[q]||o[q][4]||5===l[q]||o[q][5]||6===l[q]||o[q][6]||7===l[q]||o[q][7]||8===l[q]||o[q][8]||9===l[q]||o[q][9]||10===l[q]||o[q][10]?(h.put("sub_layer_max_12bit_constraint_flag",d(i,1)),h.put("sub_layer_max_10bit_constraint_flag",d(i,1)),h.put("sub_layer_max_8bit_constraint_flag",d(i,1)),h.put("sub_layer_max_422chroma_constraint_flag",d(i,1)),h.put("sub_layer_max_420chroma_constraint_flag",d(i,1)),h.put("sub_layer_max_monochrome_constraint_flag",d(i,1)),h.put("sub_layer_intra_constraint_flag",d(i,1)),h.put("sub_layer_one_picture_only_constraint_flag",d(i,1)),h.put("sub_layer_lower_bit_rate_constraint_flag",d(i,1)),5===l[q]||o[q][5]?(h.put("sub_layer_max_14bit_constraint_flag",d(i,1)),h.put("sub_layer_lower_bit_rate_constraint_flag",d(i,1)),p[q]=d(i,33)):p[q]=d(i,34)):h.put("sub_layer_reserved_zero_43bits",d(i,43)),l[q]>=1&&l[q]<=5||9==l[q]||o[1]||o[2]||o[3]||o[4]||o[5]||o[9]?h.put("sub_layer_inbld_flag",d(i,1)):h.put("sub_layer_reserved_zero_bit",d(i,1))}j[q]&&h.put("sub_layer_level_idc",d(i,8))}}var g=0,h=null,i=null,j=null,k=0,l=0,m=0,n=0,o=0;return a.prototype={parse:function(a){i=a,g=0,h.clear(),h.put("forbidden_zero_bit",d(i,1)),h.put("nal_unit_type",d(i,6)),h.put("nuh_layer_id",d(i,6)),h.put("nuh_temporal_id_plus1",d(i,3)),h.put("sps_video_parameter_set_id",d(i,4)),0===h.get("nuh_layer_id")?h.put("sps_max_sub_layers_minus1",d(i,3)):h.put("sps_ext_or_max_sub_layers_minus1",d(i,3));var b=0!==h.get("nuh_layer_id")&&7===h.get("sps_ext_or_max_sub_layers_minus1");return b||(h.put("sps_max_sub_layers_minus1",d(i,1)),f(1,h.get("sps_max_sub_layers_minus1"))),d(i,84),h.put("sps_seq_parameter_set_id",e(i,0)),b?(h.put("update_rep_format_flag",d(i,1)),h.get("update_rep_format_flag")&&h.put("sps_rep_format_idx",d(i,8))):(h.put("chroma_format_idc",e(i,0)),3===h.get("chroma_format_idc")&&h.put("separate_colour_plane_flag",d(i,1)),h.put("pic_width_in_luma_samples",e(i,0)),h.put("pic_height_in_luma_samples",e(i,0)),h.put("conformance_window_flag",d(i,1)),h.get("conformance_window_flag")&&(h.put("conf_win_left_offset",e(i,0)),h.put("conf_win_right_offset",e(i,0)),h.put("conf_win_top_offset",e(i,0)),h.put("conf_win_bottom_offset",e(i,0)))),!0},parse2:function(a){var b=a.length;if(i=a,j=a,k=a.length,l=0,m=0,n=0,o=0,g=0,h.clear(),20>b)return!1;d(i,16),d(i,4);var c=d(i,3);if(h.put("sps_max_sub_layers_minus1",c),c>6)return!1;d(i,1),d(i,2),d(i,1);d(i,5);d(i,32),d(i,1),d(i,1),d(i,1),d(i,1),d(i,43),d(i,1),h.put("general_level_idc",d(i,8));for(var f=[],p=[],q=0;c>q;q++)f[q]=d(i,1),p[q]=d(i,1);if(c>0)for(var q=c;8>q;q++){d(i,2)}for(var q=0;c>q;q++)f[q]&&(d(i,2),d(i,1),d(i,5),d(i,32),d(i,1),d(i,1),d(i,1),d(i,1),d(i,44)),p[q]&&d(i,8);var r=e(i,0);if(h.put("sps_seq_parameter_set_id",r),r>15)return!1;var s=e(i,0);if(h.put("chroma_format_idc",s),r>3)return!1;3==s&&d(i,1),h.put("pic_width_in_luma_samples",e(i,0)),h.put("pic_height_in_luma_samples",e(i,0)),d(i,1)&&(e(i,0),e(i,0),e(i,0),e(i,0));var t=e(i,0),u=e(i,0);return t!=u?!1:!0},getSizeInfo:function(){var a=h.get("pic_width_in_luma_samples"),b=h.get("pic_height_in_luma_samples");if(h.get("conformance_window_flag")){var c=h.get("chroma_format_idc"),d=h.get("separate_colour_plane_flag");"undefined"==typeof d&&(d=0);var e=1!==c&&2!==c||0!==d?1:2,f=1===c&&0===d?2:1;a-=e*h.get("conf_win_right_offset")+e*h.get("conf_win_left_offset"),b-=f*h.get("conf_win_bottom_offset")+f*h.get("conf_win_top_offset")}var g=a*b,i={width:a,height:b,decodeSize:g};return i},getSpsValue:function(a){return h.get(a)}},new a}var H265Session=function(){"use strict";function a(){this.decoder=H265Decoder(),this.firstTime=0,this.lastMSW=0}var b,c=0,d=0,e=0,f=!1,g=0,h=0,i=new H265SPSParser,j={frameData:null,timeStamp:null},k={timestamp:null,timezone:null},l=0,m=0,n=null,o=0,p=0,q=0,r=0,s={width:0,height:0},t=0,u=8e3,v=0;return a.prototype={setReturnCallback:function(a){this.rtpReturnCallback=a},setBufferfullCallback:function(a){null!==this.videoBufferList&&this.videoBufferList.setBufferFullCallback(a)},getVideoBuffer:function(a){return null!==this.videoBufferList?this.videoBufferList.searchNodeAt(a):void 0},clearBuffer:function(){null!==this.videoBufferList&&this.videoBufferList.clear()},findCurrent:function(){null!==this.videoBufferList&&this.videoBufferList.searchTimestamp(this.getTimeStamp())},ntohl:function(a){return(a[0]<<24)+(a[1]<<16)+(a[2]<<8)+a[3]>>>0},appendBuffer:function(a,b,c){var d=1048576;if(c+b.length>=a.length){var e=new Uint8Array(a.length+d);e.set(a,0),a=e}return a.set(b,c),a},setGovLength:function(a){n=a},getGovLength:function(){return n},setDecodingTime:function(a){this.decodingTime=a},getDropPercent:function(){return o},getDropCount:function(){return p},initStartTime:function(){this.firstDiffTime=0,this.calcGov=0},setCheckDelay:function(a){this.checkDelay=a},init:function(){this.decoder.setIsFirstFrame(!1),this.videoBufferList=new VideoBufferList,this.firstDiffTime=0,this.checkDelay=!0,this.timeData=null},parseRTPData:function(a,n,o,p,q){var w=null,x={},y=(n[19]<<24)+(n[18]<<16)+(n[17]<<8)+n[16]>>>0,z=Date.UTC("20"+(y>>26),(y>>22&15)-1,y>>17&31,y>>12&31,y>>6&63,63&y)/1e3;if(z-=28800,0==this.firstTime)this.firstTime=z,this.lastMSW=0,d=(n[21]<<8)+n[20],k={timestamp:this.firstTime,timestamp_usec:0};else{var A,B=(n[21]<<8)+n[20];A=B>d?B-d:B+65535-d,this.lastMSW+=A,z>this.firstTime&&(this.lastMSW-=1e3),this.firstTime=z,k={timestamp:z,timestamp_usec:this.lastMSW},d=B}0!==this.getFramerate()&&"undefined"!=typeof this.getFramerate()||"undefined"==typeof this.getTimeStamp()||(this.setFramerate(Math.round(1e3/((k.timestamp-this.getTimeStamp().timestamp===0?0:1e3)+(k.timestamp_usec-this.getTimeStamp().timestamp_usec)))),debug.log("setFramerate"+Math.round(1e3/((k.timestamp-this.getTimeStamp().timestamp===0?0:1e3)+(k.timestamp_usec-this.getTimeStamp().timestamp_usec))))),this.setTimeStamp(k);var C=n[22];b=n.subarray(24+C,n.length-8),c=(n[21]<<8)+n[20];for(var D=[],E=0;E<=b.length;)if(0==b[E])if(0==b[E+1])if(1==b[E+2]){if(D.push(E),E+=3,5==(31&b[E])||1==(31&b[E]))break}else 0==b[E+2]?E++:E+=3;else E+=2;else E+=1;for(var F,G="P",E=0;E<D.length;E++)switch(w=b.subarray(D[E]+3,D[E+1]),F=b[D[E]+3]>>1&63){default:break;case 33:G="I",i.parse2(w);var H=q;h=i.getSizeInfo().decodeSize,l=H.width,m=H.height,(s.width!=H.width||s.height!=H.height)&&(0!=s.width?(s.width=H.width,s.height=H.height,x.resolution=s,x.resolution.decodeMode="canvas",x.resolution.encodeMode="h265"):(s.width=H.width,s.height=H.height,x.decodeStart=s,x.decodeStart.decodeMode="canvas",x.decodeStart.encodeMode="h265"))}var I=1e3*k.timestamp+k.timestamp_usec;0==this.firstDiffTime?(t=0,this.firstDiffTime=Date.now()-I,debug.log("firstDiff: "+r)):(0>I-v&&(this.firstDiffTime=t+(Date.now()-I).toFixed(0)),t=Date.now()-I-this.firstDiffTime,0>t&&(this.firstDiffTime=0,t=0),t>u&&(x.error={errorCode:101},this.rtpReturnCallback(x))),v=I,j.frameData=null,g!==h&&(g=h,this.decoder.setOutputSize(g)),(o!==!0||f!==!0)&&(j.frameData=this.decoder.decode(b),j.frameData.frameType=G),j.timeStamp=null,e=0,k=null===k.timestamp?this.getTimeStamp():k,j.timeStamp=k,o&&(x.backupData={stream:b,frameType:G,width:l,height:m,codecType:"h265"},null!==k.timestamp&&"undefined"!=typeof k.timestamp?x.backupData.timestamp_usec=k.timestamp_usec:x.backupData.timestamp=(c/90).toFixed(0)),x.decodedData=j,this.rtpReturnCallback(x)},findIFrame:function(){if(null!==this.videoBufferList){var a=this.videoBufferList.findIFrame();if(null===a||"undefined"==typeof a)return!1;var b={};return this.setTimeStamp(a.timeStamp),b.frameData=this.decoder.decode(a.buffer),b.timeStamp=a.timeStamp,b}},getFramerate:function(){return q},setFramerate:function(a){a>0&&"undefined"!=typeof a&&(q=a,null!==this.videoBufferList&&(this.videoBufferList.setMaxLength(6*q),this.videoBufferList.setBUFFERING(4*q)))},getTimeStamp:function(){return this.timeData},setTimeStamp:function(a){this.timeData=a}},new a};
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