Texas Instruments DM365, User Manual

Page: 69 / 131

API Reference
4-23
4.2.1.1 XDM_BufDesc
║
Description
This structure defines the buffer descriptor for input and output buffers.
║
Fields
Field Data type Input/
Output Description
**bufs XDAS_Int8 Input Pointer to the vector containing buffer addresses
numBufs XDAS_Int32
Input Number of buffers
*bufSizes XDAS_Int32 Input Size of each buffer in bytes
4.2.1.2 XDM_AlgBufInfo
║
Description
This structure defines the buffer information descriptor for input and output
buffers. This structure is filled when you invoke the
control()
function
with the
XDM_GETBUFINFO
command.
║
Fields
Field Data type Input/
Output Description
minNumInBufs XDAS_Int32 Output Number of input buffers
minNumOutBufs XDAS_Int32
Output Number of output buffers
minInBufSize[XDM_MAX
_IO_BUFFERS] XDAS_Int32 Output Size in bytes required for each input buffer
minOutBufSize[XDM_MA
X_IO_BUFFERS] XDAS_Int32
Output Size in bytes required for each output buffer
Note:
For H.264 Base/Main/High Profile Encoder, the buffer details are:
‰ Number of input buffer required is 2 for YUV 420P with chroma
interleaved.
‰ Number of output buffer required is 1.
‰ The input buffer sizes (in bytes) for worst case 2048x2048 format
are:
For YUV 420P:
Y buffer = 2048 * 2048
UV buffer = 2048 * 1024
The above input buffer size calculation is done assuming that the