hi_mpi_pngd_send_stream

Product	Supported
Atlas 350 Accelerator Card	√
Atlas A3 training product / Atlas A3 inference product	√
Atlas A2 training product / Atlas A2 inference product	√
Atlas 200I/500 A2 inference product	√
Atlas inference product	√
Atlas training product	☓

Sends the stream and decoding result buffer to a decoding channel.

hi_s32 hi_mpi_pngd_send_stream(hi_pngd_chn chn, const hi_img_stream *stream, hi_pic_info *png_pic_info, hi_s32 milli_sec)

Parameter	Input/Output	Description
chn	Input	Decoding channel ID. The value range of this parameter is [0, 128). The maximum number of channels is 128.
stream	Input	Pointer to the input stream information. The configured addr must be a buffer address on the device.
png_pic_info	Input	Pointer to the information of the output image.
milli_sec	Input	Timeout interval (ms). -1: blocking mode. 0: non-blocking mode. > 0: timeout interval (timeout mode). The timeout interval varies with the operating system. The deviation is generally within a time slice of an operating system. For example, if the time slice of an operating system is 4 ms and the value of milli_sec is set to 1, the actual timeout interval ranges from 1 ms to 5 ms. When the CPU load is high, the timeout interval may fluctuate.

Ensure that a channel has been created. Otherwise, the error code HI_ERR_PNGD_UNEXIST is returned. If the channel is destroyed when streams are being sent, the error code HI_ERR_PNGD_UNEXIST is returned.
To send a stream, a complete PNG image is required. Otherwise, a decoding error occurs.
In non-blocking mode, the error code HI_ERR_PNGD_BUF_FULL is returned if the stream buffer is full.
In timeout mode, if the stream fails to be sent within the specified timeout interval, the error code HI_ERR_PNGD_BUF_FULL is returned.
For details about the requirements on the input and output images during image decoding, see PNGD Functions and Restrictions.
During decoding, the input and output memory must be allocated and released by calling the hi_mpi_dvpp_malloc and hi_mpi_dvpp_free APIs. The input and output memory can be released only after the result is obtained by calling the hi_mpi_pngd_get_image_data API.