Function OH_VideoDecoder_QueryOutputBuffer 

pub unsafe extern "C" fn OH_VideoDecoder_QueryOutputBuffer(
    codec: *mut OH_AVCodec,
    index: *mut u32,
    timeoutUs: i64,
) -> OH_AVErrCode

Available on crate feature api-20 only.

Queries the index of the next available output buffer.

The obtained buffer handle through OH_VideoDecoder_GetOutputBuffer must be:

• Return to the decoder via OH_VideoDecoder_FreeOutputBuffer, or
• Rendered using OH_VideoDecoder_RenderOutputBuffer, or
• Scheduled for rendering with OH_VideoDecoder_RenderOutputBufferAtTime

Note: This operation is only supported in synchronous mode.

Required System Capabilities: SystemCapability.Multimedia.Media.VideoDecoder

Arguments

• codec - Pointer to an OH_AVCodec instance

• index - The index of the output buffer

• timeoutUs - Timeout duration in microseconds, negative value indicates infinite wait.

Returns

• Returns AV_ERR_OK if the execution is successful, otherwise returns a specific error code, refer to OH_AVErrCode. [AV_ERR_NO_MEMORY], internal errors in the input decode instance, such as an abnormal NULL. [AV_ERR_INVALID_VAL], the decoder is nullptr or invalid. [AV_ERR_UNKNOWN], unknown error. [AV_ERR_SERVICE_DIED], avcodec service is died. [AV_ERR_INVALID_STATE], this interface was called in invalid state. [AV_ERR_OPERATE_NOT_PERMIT], not permitted in asynchronous mode. [AV_ERR_STREAM_CHANGED], stream format changed, call OH_VideoDecoder_GetOutputDescription to retrieve new steam information. [AV_ERR_TRY_AGAIN_LATER], query failed, recommended retry after delay.

Available since API-level: 20