android - Get yuv size size stored by Mediabuffer -

i use openmax decode video frame,my sample this:

file* fp = fopen("/data/local/tmp/test.yuv", "wb"); while(!isexit) {     mediabuffer *mvideobuffer;     mediasource::readoptions options;     status_t err = mvideodecoder->read(&mvideobuffer, &options);     if (err == ok)      {         if (mvideobuffer->range_length() > 0)          {             // if video frame availabe, render mnativewindow             int w = 0;             int h = 0;             int dw = 0;             int dh = 0;             int stride = 0;             sp<metadata> metadata = mvideobuffer->meta_data();             sp<metadata> outformat = mvideodecoder->getformat();              outformat->findint32(kkeywidth , &w);             outformat->findint32(kkeyheight, &h);              int64_t timeus = 0;             metadata->findint64(kkeytime, &timeus);             metadata->findint32(kkeydisplayheight, &dh);             metadata->findint32(kkeydisplaywidth, &dw);             metadata->findint32(kkeystride, &stride);             printf("out format w:%d h:%d dw:%d dh:%d stride:%d timestamp:%lld\n",                         w, h, dw, dh, stride, timeus);              if(fp)             {                 printf("decode frame, range_length = %d range_offset = %d size = %d width = %d height = %d\n",                             mvideobuffer->range_length(), mvideobuffer->range_offset(), mvideobuffer->size(), w, h);                 fwrite(mvideobuffer->data( ) + mvideobuffer->range_offset( ), 1, mvideobuffer->range_length(), fp);             }              metadata->setint32(kkeyrendered, 1);         }         mvideobuffer->release();     }     else     {         printf("end of file\n");         isexit = true;     } } fclose(fp); 

the output this:

out format w:1280 h:720 dw:0 dh:0 stride:0 timestamp:44044 decode frame, range_length = 1417216 range_offset = 0 size = 1417216 width = 1280 height = 720 

my question how know yuv realy size stored mediabuffer, because 1280 x 736 (stride 32, guess) x 1.5 = 1413120,but mvideobuffer's range_length() 1417216, there no regular can yuv size, please me, !

the mediabuffer being read part read method initialized here. please note info.msize set def.nbuffersize same allocated size. information not updated reflect actual size filled decoder.

the allocation 1280 x 736 x 1.5 height aligned 32. stride not required 1280 aligned number.