aclvdecChannelDescParamType

Data Format	Description
ACL_VDEC_CSC_MATRIX_UINT32 = 0	CSC matrix attribute. For details about the attribute values, see acldvppCscMatrix. The Atlas training products does not support this mode.
ACL_VDEC_OUT_MODE_UINT32 = 1	Frame output mode, to set whether to output frames in real time. The options are as follows: 0: delayed frame output mode. VDEC starts to output the decoding result only after receiving multiple frames in the stream. 1: real-time frame output mode. The VDEC starts to output the decoding result in real time after obtaining a frame in the stream. Only H.264/H.265 standard streams with simple reference relationships are supported (no long-term reference frames or B-frames).
ACL_VDEC_THREAD_ID_UINT64 = 2	Callback thread ID. NOTE: It is not allowed to pass the same thread ID for subscribing to VDEC callback functions on different devices in the same process. On a single device, the same thread ID can be specified for multiple VDEC channels. Compared with the scenario where each VDEC channel is processed by a separate thread, VDEC is less performant when multiple VDEC channels are processed in serial in a single thread.
ACL_VDEC_CALLBACK_PTR = 3	Decoding callback function. The format is as follows: def vdec_call_back_func(dvpp_stream_desc, dvpp_pic_desc, user_data): pass
ACL_VDEC_CHANNEL_ID_UINT32 = 4	Channel ID. Must be in the range of [0, 31] for the Atlas training products. Must be in the range of [0, 255] for the Atlas 200I/500 A2 inference products. Atlas A2 training products/Atlas A2 inference products Must be in the range of [0, 255] for the Atlas inference products. Must be in the range of [0, 255] for the Atlas A3 training products/Atlas A3 inference products.
ACL_VDEC_ENCODE_TYPE_UINT32 = 5	Video coding protocol. For details, see acldvppStreamFormat.
ACL_VDEC_OUT_PIC_FORMAT_UINT32 = 6	YUV image storage format. For details, see Table 1. If the output format is not specified, YUV420SP NV12 is used by default.
ACL_VDEC_OUT_PIC_WIDTH_UINT32 = 7	Maximum output width. Atlas training products: Defaults to 1920. Atlas 200I/500 A2 inference products: Defaults to 4096. Atlas A2 training products/Atlas A2 inference products: Defaults to 4096. Atlas inference products: Defaults to 4096. Atlas A3 training products/Atlas A3 inference products: Defaults to 4096.
ACL_VDEC_OUT_PIC_HEIGHT_UINT32 = 8	Maximum output height. Atlas training products: Defaults to 1120. Atlas 200I/500 A2 inference products: Defaults to 4096. Atlas A2 training products/Atlas A2 inference products: Defaults to 4096. Atlas inference products: Defaults to 4096. Atlas A3 training products/Atlas A3 inference products: Defaults to 4096.
ACL_VDEC_REF_FRAME_NUM_UINT32 = 9	Number of reference frames. Must be in the range of [0, 16]. Atlas training products: Not configurable in the current version. Atlas 200I/500 A2 inference products: Defaults to 4096. Atlas A2 training products/Atlas A2 inference products: Defaults to 8. Atlas inference products: Defaults to 8. Atlas A3 training products/Atlas A3 inference products: Defaults to 8.
ACL_VDEC_BIT_DEPTH_UINT32 = 10	Video bit depth. Value range: 0: 8-bit 1: 10-bit (default) Atlas training products: Not configurable in the current version.

Parent topic: Data Types and Operation APIs