感谢xu2000发了这么多资料,其实这些资料我也有,我的问题就是资料中
Media_Properties 的
UINT8[type_specific_len] type_specific_data; 成员
资料中的相关说明如下:
type_specific_len: 32 bits
The length of the following type_specific_data in bytes. The
type_specific_data is typically used by the data-type renderer to
initialize itself in order to process the media stream. This member
is present on all MediaProperties objects with an object_version of
0 (zero).
type_specific_data: variable length
The type_specific_data is typically used by the data-type renderer
to initialize itself in order to process the media stream. This
member is present on all MediaProperties objects with an
object_version of 0 (zero).
但是资料中没有提到具体的流的type_specific_data对应的数据结构,比如视频流对应的type_specific_data数据如下:
00000000h: 00 00 00 22 56 49 44 4F 52 56 34 30 02 00 01 80 ; ..."VIDORV40...