acldvppVpcResizeAsync

Applicable Products

Product	Supported
Ascend 950PR / Ascend 950DT	x
Atlas A3 training products / Atlas A3 inference products	√
Atlas A2 training products / Atlas A2 inference products	√
Atlas 200I/500 A2 inference products	√
Atlas inference products	√
Atlas training products	√

Function

Resizes the input image to the output image size. This API is asynchronous.

Prototype

      
           aclError acldvppVpcResizeAsync(acldvppChannelDesc *channelDesc,
acldvppPicDesc *inputDesc,
acldvppPicDesc *outputDesc,
acldvppResizeConfig *resizeConfig,
aclrtStream stream)

Parameters

Parameter	Input/Output	Description
channelDesc	Input	Pointer to the channel description. Must be the same as the channelDesc argument passed to the acldvppCreateChannel call.
inputDesc	Input	Pointer to the input image information. Call acldvppCreatePicDesc to create an image description. Call acldvppSetPicDesc series to set the image description (including the buffer address, buffer size, image format, and image resolution).
outputDesc	Input/Output	Pointer to the output image information. When outputDesc is used as an input, the user needs to: Call acldvppCreatePicDesc to create an image description. Call acldvppSetPicDesc series to set the image description (including the buffer address, buffer size, image format, and image resolution).
resizeConfig	Input	Pointer to the image resizing configuration. Call acldvppCreateResizeConfig to create an image resizing configuration.
stream	Input	Stream. For details, see aclrtStream.

Returns

0 on successful task delivery; else, failure. For details, see aclError.

Restrictions

Model	Restriction
Atlas training products	Input image resolution and format: When the input image resolution is within the range of [10 × 6, 4096 × 4096], the input image formats described in Restrictions on Image Formats, Width and Height Alignment, and Buffers are supported. When the width or height of the input image is within the range of (4096, 8192], the supported formats are as follows: The following enum values of acldvppPixelFormat are supported: PIXEL_FORMAT_YUV_SEMIPLANAR_420 = 1, // YUV420SP NV12 8bit PIXEL_FORMAT_YVU_SEMIPLANAR_420 = 2, // YUV420SP NV21 8bit If the width/height of the input image is not 2-pixel aligned, the VPC automatically rounds down the width/height to the nearest multiple of 2 pixels. For example, for a 15 × 15 input image, the VPC rounds down the image resolution to 14 × 14 before resizing the image. For details about the output image resolution and format, see Restrictions on Image Formats, Width and Height Alignment, and Buffers. For details about the restrictions on the width and height alignment, buffer size, and image format, see Restrictions on Image Formats, Width and Height Alignment, and Buffers.
Atlas inference products	Input image resolution and format: When the input image resolution is within the range of [10 × 6, 4096 × 4096], the input image formats described in Restrictions on Image Formats, Width and Height Alignment, and Buffers are supported. When the width or height of the input image is within the range of (4096, 8192], the supported formats are as follows: The following enum values of acldvppPixelFormat are supported: PIXEL_FORMAT_YUV_400 = 0, // YUV400 8bit PIXEL_FORMAT_YUV_SEMIPLANAR_420 = 1, // YUV420SP NV12 8bit PIXEL_FORMAT_YVU_SEMIPLANAR_420 = 2, // YUV420SP NV21 8bit PIXEL_FORMAT_YUV_SEMIPLANAR_422 = 3, // YUV422SP 8bit PIXEL_FORMAT_YVU_SEMIPLANAR_422 = 4, // YVU422SP 8bit PIXEL_FORMAT_YUV_SEMIPLANAR_444 = 5, // YUV444SP 8bit PIXEL_FORMAT_YVU_SEMIPLANAR_444 = 6, // YVU444SP 8bit PIXEL_FORMAT_YUYV_PACKED_422 = 7, // YUV422Packed YUYV 8bit PIXEL_FORMAT_UYVY_PACKED_422 = 8, // YUV422Packed UYVY 8bit PIXEL_FORMAT_YVYU_PACKED_422 = 9, // YUV422Packed YVYU 8bit PIXEL_FORMAT_VYUY_PACKED_422 = 10, // YUV422Packed VYUY 8bit If the width/height of the input image is not 2-pixel aligned, the VPC automatically rounds down the width/height to the nearest multiple of 2 pixels. For example, for a 15 × 15 input image, the VPC rounds down the image resolution to 14 × 14 before resizing the image. For details about the output image resolution and format, see Restrictions on Image Formats, Width and Height Alignment, and Buffers. For details about the restrictions on the width and height alignment, buffer size, and image format, see Restrictions on Image Formats, Width and Height Alignment, and Buffers. When the input and output images are in ARGB8888, ABGR8888, RGBA8888, or BGRA8888 format, the A component value changes to 0 after resizing by calling this API.
Atlas A3 training products / Atlas A3 inference products Atlas A2 training products / Atlas A2 inference products Atlas 200I/500 A2 inference products	Input and output image resolutions: Input image resolution: [10 × 6, 8192 × 8192] Output image resolution: [10 × 6, 4096 × 8192] For details about the restrictions on the image format, width and height alignment, and buffer size, see Restrictions on Image Formats, Width and Height Alignment, and Buffers. When the input and output images are in ARGB8888, ABGR8888, RGBA8888, or BGRA8888 format, the A component value changes to 0 after resizing by calling this API.

Model

Restriction

Atlas training products

Input image resolution and format:
- When the input image resolution is within the range of [10 × 6, 4096 × 4096], the input image formats described in Restrictions on Image Formats, Width and Height Alignment, and Buffers are supported.
- When the width or height of the input image is within the range of (4096, 8192], the supported formats are as follows:
  The following enum values of acldvppPixelFormat are supported:
```
PIXEL_FORMAT_YUV_SEMIPLANAR_420 = 1,       // YUV420SP NV12 8bit   
PIXEL_FORMAT_YVU_SEMIPLANAR_420 = 2,       // YUV420SP NV21 8bit 
```
- If the width/height of the input image is not 2-pixel aligned, the VPC automatically rounds down the width/height to the nearest multiple of 2 pixels. For example, for a 15 × 15 input image, the VPC rounds down the image resolution to 14 × 14 before resizing the image.
For details about the output image resolution and format, see Restrictions on Image Formats, Width and Height Alignment, and Buffers.
For details about the restrictions on the width and height alignment, buffer size, and image format, see Restrictions on Image Formats, Width and Height Alignment, and Buffers.

Atlas inference products

Input image resolution and format:
- When the input image resolution is within the range of [10 × 6, 4096 × 4096], the input image formats described in Restrictions on Image Formats, Width and Height Alignment, and Buffers are supported.
- When the width or height of the input image is within the range of (4096, 8192], the supported formats are as follows:
  The following enum values of acldvppPixelFormat are supported:
```
PIXEL_FORMAT_YUV_400 = 0,               // YUV400 8bit
PIXEL_FORMAT_YUV_SEMIPLANAR_420 = 1,    // YUV420SP NV12 8bit   
PIXEL_FORMAT_YVU_SEMIPLANAR_420 = 2,    // YUV420SP NV21 8bit 
PIXEL_FORMAT_YUV_SEMIPLANAR_422 = 3,    // YUV422SP 8bit
PIXEL_FORMAT_YVU_SEMIPLANAR_422 = 4,    // YVU422SP 8bit
PIXEL_FORMAT_YUV_SEMIPLANAR_444 = 5,    // YUV444SP 8bit
PIXEL_FORMAT_YVU_SEMIPLANAR_444 = 6,    // YVU444SP 8bit
PIXEL_FORMAT_YUYV_PACKED_422 = 7,       // YUV422Packed YUYV 8bit
PIXEL_FORMAT_UYVY_PACKED_422 = 8,       // YUV422Packed UYVY 8bit
PIXEL_FORMAT_YVYU_PACKED_422 = 9,       // YUV422Packed YVYU 8bit
PIXEL_FORMAT_VYUY_PACKED_422 = 10,      // YUV422Packed VYUY 8bit
```
- If the width/height of the input image is not 2-pixel aligned, the VPC automatically rounds down the width/height to the nearest multiple of 2 pixels. For example, for a 15 × 15 input image, the VPC rounds down the image resolution to 14 × 14 before resizing the image.
For details about the output image resolution and format, see Restrictions on Image Formats, Width and Height Alignment, and Buffers.
For details about the restrictions on the width and height alignment, buffer size, and image format, see Restrictions on Image Formats, Width and Height Alignment, and Buffers.
When the input and output images are in ARGB8888, ABGR8888, RGBA8888, or BGRA8888 format, the A component value changes to 0 after resizing by calling this API.

Atlas A3 training products / Atlas A3 inference products

Atlas A2 training products / Atlas A2 inference products

Atlas 200I/500 A2 inference products

Input and output image resolutions:
- Input image resolution: [10 × 6, 8192 × 8192]
- Output image resolution: [10 × 6, 4096 × 8192]
For details about the restrictions on the image format, width and height alignment, and buffer size, see Restrictions on Image Formats, Width and Height Alignment, and Buffers.
When the input and output images are in ARGB8888, ABGR8888, RGBA8888, or BGRA8888 format, the A component value changes to 0 after resizing by calling this API.

Reference

For details about the API call sequence and example, see Typical Functions of VPC.

Parent topic: VPC