Datasheet

1166
SAM9M10 [DATASHEET]
6355F–ATARM–12-Mar-13
46.7.7 Decoder Control Register 3 (Stream Buffer Information)
Name: VDEC_CTLR3
Address: 0x00900018
Access: Read-write
• STREAM_LEN: Stream Length
Amount of stream data bytes in input buffer. If the given buffer size is not enough for finishing the picture, the correspond-
ing interrupt is given and new stream buffer base address and stream buffer size information should be given.
For VC-1 the buffer must include data for one picture/slice of the picture.
For H264/MPEG4/H263/MPEG2/MPEG1 the buffer must include at least data for one slice/VP of the picture.
For JPEG the buffer size must be a multiple of 256 bytes or the amount of data for one picture.
• INIT_QP: Quantization initialization
Initial value for quantization parameter (picture quantizer).
• ST_COD_EN: Stream start code
Stream start codes exist:
0: Stream doesn't contain start codes.
1: Stream contains start codes.
31 30 29 28 27 26 25 24
ST_COD_EN INIT_QP –
23 22 21 20 19 18 17 16
STREAM_LEN
15 14 13 12 11 10 9 8
STREAM_LEN
76543210
STREAM_LEN