2.2.2.3.1 TS_RFX_FRAME_BEGIN
The TS_RFX_FRAME_BEGIN message indicates the start of a new frame for a specific channel in the encoded stream.
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CodecChannelT |
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frameIdx |
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numRegions |
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CodecChannelT (8 bytes): A TS_RFX_CODEC_CHANNELT (section 2.2.2.1.2) structure. The blockType field MUST be set to WBT_FRAME_BEGIN (0xCCC4).
frameIdx (4 bytes): A 32-bit unsigned integer. Specifies the index of the frame in the current video sequence. This field is used when the codec is operating in video mode, as specified using the flags field of the TS_RFX_CONTEXT (section 2.2.2.2.4) message. If the codec is operating in image mode, this field MUST be ignored. If the codec is operating in video mode, this field SHOULD be ignored.
numRegions (2 bytes): A 16-bit signed integer. Specifies the number of TS_RFX_REGION (section 2.2.2.3.3) messages following this TS_RFX_FRAME_BEGIN message. That is, the number of regions in the frame.