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//!
//! \file     decode_vp9_phase_back_end.cpp
//! \brief    Defines the interface for Vp9 decode back end phase.
//!

#include "decode_vp9_phase_back_end.h"
#include "decode_utils.h"

namespace decode
{

uint32_t Vp9PhaseBackEnd::GetCmdBufIndex()
{
    DECODE_FUNC_CALL();
    DECODE_ASSERT(m_scalabOption.GetNumPipe() > 1);

    if (m_scalabOption.IsFESeparateSubmission() && !m_pipeline->IsParallelSubmission())
    {
        return m_secondaryCmdBufIdxBase + GetPipe();
    }
    else
    {
        return m_secondaryCmdBufIdxBase + GetPipe() + 1;
    }
}

uint32_t Vp9PhaseBackEnd::GetSubmissionType()
{
    DECODE_FUNC_CALL();
    if (IsFirstBackEnd())
    {
        return SUBMISSION_TYPE_MULTI_PIPE_MASTER;
    }
    else if (IsLastBackEnd())
    {
        return SUBMISSION_TYPE_MULTI_PIPE_SLAVE | SUBMISSION_TYPE_MULTI_PIPE_FLAGS_LAST_PIPE;
    }
    else
    {
        return SUBMISSION_TYPE_MULTI_PIPE_SLAVE;
    }
}

MOS_STATUS Vp9PhaseBackEnd::GetMode(uint32_t &pipeWorkMode, uint32_t &multiEngineMode)
{
    DECODE_FUNC_CALL();
    pipeWorkMode = MHW_VDBOX_HCP_PIPE_WORK_MODE_CODEC_BE;
    if (IsFirstBackEnd())
    {
        multiEngineMode = MHW_VDBOX_HCP_MULTI_ENGINE_MODE_LEFT;
    }
    else if (IsLastBackEnd())
    {
        multiEngineMode = MHW_VDBOX_HCP_MULTI_ENGINE_MODE_RIGHT;
    }
    else
    {
        multiEngineMode = MHW_VDBOX_HCP_MULTI_ENGINE_MODE_MIDDLE;
    }
    return MOS_STATUS_SUCCESS;
}

uint32_t Vp9PhaseBackEnd::GetPktId()
{
    DECODE_FUNC_CALL();
    return DecodePacketId(m_pipeline, vp9BackEndPacketId);
}

bool Vp9PhaseBackEnd::ImmediateSubmit()
{
    DECODE_FUNC_CALL();
    return (IsLastBackEnd());
}

bool Vp9PhaseBackEnd::RequiresContextSwitch()
{
    DECODE_FUNC_CALL();
    if (m_scalabOption.IsFESeparateSubmission() && IsFirstBackEnd())
    {
        return true; // switch context for first back end in separate submission mode
    }
    else
    {
        return false;
    }
}

}
