path: root/src/pnw_jpeg.c

/*
 * Copyright (c) 2011 Intel Corporation. All Rights Reserved.
 * Copyright (c) Imagination Technologies Limited, UK
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sub license, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
 * IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * Authors:
 *    Elaine Wang <elaine.wang@intel.com>
 *
 */


#include <stdlib.h>
#include <stdint.h>
#include <string.h>

#include "psb_def.h"
#include "psb_surface.h"
#include "psb_cmdbuf.h"
#include "pnw_jpeg.h"
#include "pnw_hostcode.h"
#include "pnw_hostheader.h"
#include "pnw_hostjpeg.h"

#define INIT_CONTEXT_JPEG       context_ENC_p ctx = (context_ENC_p) obj_context->format_data
#define SURFACE(id)    ((object_surface_p) object_heap_lookup( &ctx->obj_context->driver_data->surface_heap, id ))
#define BUFFER(id)  ((object_buffer_p) object_heap_lookup( &ctx->obj_context->driver_data->buffer_heap, id ))

static const uint32_t aui32_jpg_mtx_num[PNW_JPEG_MAX_SCAN_NUM] = {0x1, 0x1, 0x1, 0x5, 0x15, 0x15, 0x55};

static void pnw_jpeg_QueryConfigAttributes(
    VAProfile profile,
    VAEntrypoint entrypoint,
    VAConfigAttrib *attrib_list,
    int num_attribs)
{
    int i;

    psb__information_message("pnw_jpeg_QueryConfigAttributes\n");

    /* RateControl attributes */
    for (i = 0; i < num_attribs; i++) {
        switch (attrib_list[i].type) {
        case VAConfigAttribRTFormat:
            break;
        default:
            attrib_list[i].value = VA_ATTRIB_NOT_SUPPORTED;
            break;
        }
    }

    return;
}


static VAStatus pnw_jpeg_ValidateConfig(
    object_config_p obj_config)
{
    int i;
    /* Check all attributes */
    for (i = 0; i < obj_config->attrib_count; i++) {
        switch (obj_config->attrib_list[i].type) {
        case VAConfigAttribRTFormat:
            /* Ignore */
            break;
        case VAConfigAttribRateControl:
            break;
        default:
            return VA_STATUS_ERROR_ATTR_NOT_SUPPORTED;
        }
    }

    return VA_STATUS_SUCCESS;

}

/*Init JPEG context. Ported from IMG_JPEG_EncoderInitialise*/
static VAStatus pnw_jpeg_CreateContext(
    object_context_p obj_context,
    object_config_p obj_config)
{
    VAStatus vaStatus = VA_STATUS_SUCCESS;
    context_ENC_p ctx;
    TOPAZSC_JPEG_ENCODER_CONTEXT *jpeg_ctx_p;
    int i;

    psb__information_message("pnw_jpeg_CreateContext\n");

    vaStatus = pnw_CreateContext(obj_context, obj_config, 1);
    if (VA_STATUS_SUCCESS != vaStatus)
        return VA_STATUS_ERROR_ALLOCATION_FAILED;

    ctx = (context_ENC_p) obj_context->format_data;

    ctx->eCodec = IMG_CODEC_JPEG;

    for (i = 0; i < obj_config->attrib_count; i++) {
        if (VAConfigAttribRTFormat ==  obj_config->attrib_list[i].type) {
            switch (obj_config->attrib_list[i].value) {
            case VA_RT_FORMAT_YUV420:
                ctx->eFormat = IMG_CODEC_PL12;
                psb__information_message("JPEG encoding: Choose NV12 format\n");
                break;
            case VA_RT_FORMAT_YUV422:
                ctx->eFormat = IMG_CODEC_YV16;
                psb__information_message("JPEG encoding: Choose YV16 format\n");
                break;
            default:
                psb__error_message("JPEG encoding: unsupported YUV format!\n");
                ctx->eFormat = IMG_CODEC_PL12;
                break;
            }
            break;
        }
    }

    ctx->Slices = 2;
    ctx->ParallelCores = 2;
    ctx->NumCores = 2;
    ctx->jpeg_ctx = (TOPAZSC_JPEG_ENCODER_CONTEXT *)calloc(1, sizeof(TOPAZSC_JPEG_ENCODER_CONTEXT));

    if (NULL == ctx->jpeg_ctx)
        return VA_STATUS_ERROR_ALLOCATION_FAILED;

    jpeg_ctx_p = ctx->jpeg_ctx;
    jpeg_ctx_p->eFormat = ctx->eFormat;

    /*Chroma sampling step x_step X y_step*/
    jpeg_ctx_p->ui8ScanNum = JPEG_SCANNING_COUNT(ctx->Width, ctx->Height, ctx->NumCores, jpeg_ctx_p->eFormat);

    if (jpeg_ctx_p->ui8ScanNum < 2 || jpeg_ctx_p->ui8ScanNum > PNW_JPEG_MAX_SCAN_NUM) {
        psb__error_message("JPEG MCU scanning number(%d) is wrong!\n", jpeg_ctx_p->ui8ScanNum);
        free(ctx->jpeg_ctx);
        ctx->jpeg_ctx = NULL;
        return VA_STATUS_ERROR_UNKNOWN;
    }

    jpeg_ctx_p->sScan_Encode_Info.ui8NumberOfCodedBuffers = jpeg_ctx_p->ui8ScanNum;

    psb__information_message(" JPEG Scanning Number %d\n", jpeg_ctx_p->ui8ScanNum);
    jpeg_ctx_p->sScan_Encode_Info.aBufferTable =
        (TOPAZSC_JPEG_BUFFER_INFO *)calloc(1, sizeof(TOPAZSC_JPEG_BUFFER_INFO)
                                           * jpeg_ctx_p->sScan_Encode_Info.ui8NumberOfCodedBuffers);

    if (NULL == jpeg_ctx_p->sScan_Encode_Info.aBufferTable)
        return VA_STATUS_ERROR_ALLOCATION_FAILED;
    jpeg_ctx_p->ui32OutputWidth = ctx->Width;
    jpeg_ctx_p->ui32OutputHeight = ctx->Height;

    /*It will be figured out when known the size of whole coded buffer.*/
    jpeg_ctx_p->ui32SizePerCodedBuffer = 0;

    jpeg_ctx_p->ctx = (unsigned char *)ctx;
    /*Reuse header_mem(76*4 bytes) and pic_params_size(256 bytes)
     *  as pMemInfoMTXSetup(JPEG_MTX_DMA_SETUP 24x4 bytes) and
     *  pMemInfoTableBlock JPEG_MTX_QUANT_TABLE(128byes)*/
    return vaStatus;
}


static void pnw_jpeg_DestroyContext(
    object_context_p obj_context)
{
    context_ENC_p ctx;

    psb__information_message("pnw_jpeg_DestroyPicture\n");

    ctx = (context_ENC_p)(obj_context->format_data);

    if (ctx->jpeg_ctx) {
        if (ctx->jpeg_ctx->sScan_Encode_Info.aBufferTable) {
            free(ctx->jpeg_ctx->sScan_Encode_Info.aBufferTable);
            ctx->jpeg_ctx->sScan_Encode_Info.aBufferTable = NULL;
        }

        free(ctx->jpeg_ctx);
    }
    pnw_DestroyContext(obj_context);

}

static VAStatus pnw_jpeg_BeginPicture(
    object_context_p obj_context)
{
    INIT_CONTEXT_JPEG;
    VAStatus vaStatus = VA_STATUS_SUCCESS;
    int ret;
    pnw_cmdbuf_p cmdbuf;

    psb__information_message("pnw_jpeg_BeginPicture: Frame %d\n", ctx->obj_context->frame_count);

    ctx->src_surface = ctx->obj_context->current_render_target;

    /* Initialise the command buffer */
    ret = pnw_context_get_next_cmdbuf(ctx->obj_context);
    if (ret) {
        psb__information_message("get next cmdbuf fail\n");
        vaStatus = VA_STATUS_ERROR_UNKNOWN;
        return vaStatus;
    }
    cmdbuf = ctx->obj_context->pnw_cmdbuf;

    /* map start_pic param */
    vaStatus = psb_buffer_map(&cmdbuf->pic_params, &cmdbuf->pic_params_p);
    if (vaStatus) {
        return vaStatus;
    }
    vaStatus = psb_buffer_map(&cmdbuf->header_mem, &cmdbuf->header_mem_p);
    if (vaStatus) {
        psb_buffer_unmap(&cmdbuf->pic_params);
        return vaStatus;
    }

    memset(ctx->jpeg_ctx->sScan_Encode_Info.aBufferTable, 0,
           sizeof(TOPAZSC_JPEG_BUFFER_INFO) * ctx->jpeg_ctx->sScan_Encode_Info.ui8NumberOfCodedBuffers);

    /*Store the QMatrix data*/
    ctx->jpeg_ctx->pMemInfoTableBlock = cmdbuf->pic_params_p;
    ctx->jpeg_ctx->psTablesBlock = (JPEG_MTX_QUANT_TABLE *)ctx->jpeg_ctx->pMemInfoTableBlock;

    /*Store MTX_SETUP data*/
    ctx->jpeg_ctx->pMemInfoMTXSetup = cmdbuf->header_mem_p;
    ctx->jpeg_ctx->pMTXSetup = (JPEG_MTX_DMA_SETUP*)ctx->jpeg_ctx->pMemInfoMTXSetup;

    ctx->jpeg_ctx->pMTXSetup->ui32ComponentsInScan = PNW_JPEG_COMPONENTS_NUM;

    if (ctx->obj_context->frame_count == 0) { /* first picture */

        psb_driver_data_p driver_data = ctx->obj_context->driver_data;

        *cmdbuf->cmd_idx++ = ((MTX_CMDID_SW_NEW_CODEC & MTX_CMDWORD_ID_MASK) << MTX_CMDWORD_ID_SHIFT) |
                             (((driver_data->drm_context & MTX_CMDWORD_COUNT_MASK) << MTX_CMDWORD_COUNT_SHIFT));
        pnw_cmdbuf_insert_command_param(ctx->eCodec);
        pnw_cmdbuf_insert_command_param((ctx->Width << 16) | ctx->Height);
    }

    pnw_jpeg_set_default_qmatix(ctx->jpeg_ctx->pMemInfoTableBlock);

    InitializeJpegEncode(ctx->jpeg_ctx, ctx->src_surface);

    return vaStatus;
}

static VAStatus pnw__jpeg_process_picture_param(context_ENC_p ctx, object_buffer_p obj_buffer)
{
    VAStatus vaStatus = VA_STATUS_SUCCESS;
    VAEncPictureParameterBufferJPEG *pBuffer;
    pnw_cmdbuf_p cmdbuf = ctx->obj_context->pnw_cmdbuf;
    BUFFER_HEADER *pBufHeader;
    //unsigned long *pPictureHeaderMem;
    //MTX_HEADER_PARAMS *psPicHeader;
    int i;
    TOPAZSC_JPEG_ENCODER_CONTEXT *jpeg_ctx = ctx->jpeg_ctx;
    IMG_ERRORCODE rc;

    ASSERT(obj_buffer->type == VAEncPictureParameterBufferType);

    if ((obj_buffer->num_elements != 1) ||
        (obj_buffer->size != sizeof(VAEncPictureParameterBufferJPEG))) {
        return VA_STATUS_ERROR_UNKNOWN;
    }

    /* Transfer ownership of VAEncPictureParameterBufferMPEG4 data */
    pBuffer = (VAEncPictureParameterBufferJPEG *) obj_buffer->buffer_data;
    obj_buffer->buffer_data = NULL;
    obj_buffer->size = 0;

    ASSERT(ctx->Width == pBuffer->picture_width);
    ASSERT(ctx->Height == pBuffer->picture_height);

    ctx->coded_buf = BUFFER(pBuffer->coded_buf);

    free(pBuffer);

    if (NULL == ctx->coded_buf) {
        psb__error_message("%s L%d Invalid coded buffer handle\n", __FUNCTION__, __LINE__);
        return VA_STATUS_ERROR_INVALID_BUFFER;
    }

    psb__information_message("Set Quant Tables\n");
    /*Set Quant Tables*/
    for (i = ctx->NumCores - 1; i >= 0; i--)
        pnw_cmdbuf_insert_command_package(ctx->obj_context,
                                          i,
                                          MTX_CMDID_SETQUANT,
                                          &cmdbuf->pic_params,
                                          0);

    psb__information_message("Quant Table \n");

    for (i = 0; i < 128 ; i++) {
        psb__information_message("%d \t", *((unsigned char *)cmdbuf->pic_params_p + i));
        if (((i + 1) % 8) == 0)
            psb__information_message("\n");
    }

    jpeg_ctx->ui32SizePerCodedBuffer =
        JPEG_CODED_BUF_SEGMENT_SIZE(ctx->coded_buf->size,
                                    ctx->Width, ctx->Height, ctx->NumCores, jpeg_ctx->eFormat);

    psb__information_message("Coded buffer total size is %d,"
                             "coded segment size per scan is %d\n",
                             ctx->coded_buf->size, jpeg_ctx->ui32SizePerCodedBuffer);

    vaStatus = psb_buffer_map(ctx->coded_buf->psb_buffer, (unsigned char **)&jpeg_ctx->jpeg_coded_buf.pMemInfo);
    if (vaStatus) {
        psb__error_message("ERROR: Map coded_buf failed!");
        return vaStatus;
    }
    jpeg_ctx->jpeg_coded_buf.ui32Size = ctx->coded_buf->size;
    jpeg_ctx->jpeg_coded_buf.sLock = BUFFER_FREE;
    jpeg_ctx->jpeg_coded_buf.ui32BytesWritten = 0;

    psb__information_message("Setup JPEG Tables\n");
    rc = SetupJPEGTables(ctx->jpeg_ctx, &jpeg_ctx->jpeg_coded_buf,  ctx->src_surface);

    if (rc != IMG_ERR_OK)
        return VA_STATUS_ERROR_UNKNOWN;

    psb__information_message("Write JPEG Headers to coded buf\n");

    pBufHeader = (BUFFER_HEADER *)jpeg_ctx->jpeg_coded_buf.pMemInfo;
    pBufHeader->ui32BytesUsed = 0; /* Not include BUFFER_HEADER*/
    rc = PrepareHeader(jpeg_ctx, &jpeg_ctx->jpeg_coded_buf, sizeof(BUFFER_HEADER), IMG_TRUE);
    if (rc != IMG_ERR_OK)
        return VA_STATUS_ERROR_UNKNOWN;

    pBufHeader->ui32Reserved3 = PNW_JPEG_HEADER_MAX_SIZE;//Next coded buffer offset
    pBufHeader->ui32BytesUsed = jpeg_ctx->jpeg_coded_buf.ui32BytesWritten - sizeof(BUFFER_HEADER);

    psb__information_message("JPEG Buffer Header size: %d, File Header size :%d, next codef buffer offset: %d\n",
                             sizeof(BUFFER_HEADER), pBufHeader->ui32BytesUsed, pBufHeader->ui32Reserved3);
    return vaStatus;
}

static VAStatus pnw__jpeg_process_qmatrix_param(context_ENC_p ctx, object_buffer_p obj_buffer)
{
    VAStatus vaStatus = VA_STATUS_SUCCESS;
    VAQMatrixBufferJPEG *pBuffer;
    JPEG_MTX_QUANT_TABLE* pQMatrix = (JPEG_MTX_QUANT_TABLE *)
                                     (ctx->jpeg_ctx->pMemInfoTableBlock);

    ASSERT(obj_buffer->type == VAQMatrixBufferType);

    pBuffer = (VAQMatrixBufferJPEG *) obj_buffer->buffer_data;

    if (0 != pBuffer->load_lum_quantiser_matrix) {
        memcpy(pQMatrix->aui8LumaQuantParams,
               pBuffer->lum_quantiser_matrix,
               QUANT_TABLE_SIZE_BYTES);
    }

    if (0 != pBuffer->load_chroma_quantiser_matrix) {
        memcpy(pQMatrix->aui8ChromaQuantParams,
               pBuffer->chroma_quantiser_matrix,
               QUANT_TABLE_SIZE_BYTES);
    }

    free(obj_buffer->buffer_data);
    obj_buffer->buffer_data = NULL;

    return vaStatus;
}


static VAStatus pnw_jpeg_RenderPicture(
    object_context_p obj_context,
    object_buffer_p *buffers,
    int num_buffers)
{
    INIT_CONTEXT_JPEG;
    VAStatus vaStatus = VA_STATUS_SUCCESS;
    int i;

    psb__information_message("pnw_jpeg_RenderPicture\n");

    for (i = 0; i < num_buffers; i++) {
        object_buffer_p obj_buffer = buffers[i];

        switch (obj_buffer->type) {
        case VAQMatrixBufferType:
            psb__information_message("pnw_jpeg_RenderPicture got VAEncSliceParameterBufferType\n");
            vaStatus = pnw__jpeg_process_qmatrix_param(ctx, obj_buffer);
            DEBUG_FAILURE;
            break;
        case VAEncPictureParameterBufferType:
            psb__information_message("pnw_jpeg_RenderPicture got VAEncPictureParameterBufferType\n");
            vaStatus = pnw__jpeg_process_picture_param(ctx, obj_buffer);
            DEBUG_FAILURE;
            break;
        default:
            vaStatus = VA_STATUS_ERROR_UNKNOWN;
            DEBUG_FAILURE;
        }
    }

    return vaStatus;
}

/* Add Restart interval termination (RSTm)to coded buf 1 ~ NumCores-1*/
static inline VAStatus pnw_OutputResetIntervalToCB(IMG_UINT8 *pui8Buf, IMG_UINT8 ui8_marker)
{
    if (NULL == pui8Buf)
        return VA_STATUS_ERROR_UNKNOWN;
    /*Refer to CCITT Rec. T.81 (1992 E), B.2.1*/
    /*RSTm: Restart marker conditional marker which is placed between
     * entropy-coded segments only if restartis enabled. There are 8 unique
     * restart markers (m = 0 - 7) which repeat in sequence from 0 to 7, starting with
     * zero for each scan, to provide a modulo 8 restart interval count*/
    *pui8Buf++ = 0xff;
    *pui8Buf = (ui8_marker | 0xd0);
    return 0;
}


static VAStatus pnw_jpeg_EndPicture(
    object_context_p obj_context)
{
    INIT_CONTEXT_JPEG;
    IMG_UINT16 ui16BCnt;
    TOPAZSC_JPEG_ENCODER_CONTEXT *pContext = ctx->jpeg_ctx;
    IMG_UINT32 rc = 0;
    pnw_cmdbuf_p cmdbuf = (pnw_cmdbuf_p)ctx->obj_context->pnw_cmdbuf;
    VAStatus vaStatus = VA_STATUS_SUCCESS;
    IMG_UINT32 ui32NoMCUsToEncode;
    IMG_UINT32 ui32RemainMCUs;

    psb__information_message("pnw_jpeg_EndPicture\n");

    ui32RemainMCUs = pContext->sScan_Encode_Info.ui32NumberMCUsToEncode;

    for (ui16BCnt = 0; ui16BCnt < pContext->sScan_Encode_Info.ui8NumberOfCodedBuffers
         && pContext->sScan_Encode_Info.ui16SScan > 0; ui16BCnt++) {
        pContext->sScan_Encode_Info.aBufferTable[ui16BCnt].ui16ScanNumber =
            pContext->sScan_Encode_Info.ui16SScan--;
        /*i8MTXNumber is the core number.*/
        pContext->sScan_Encode_Info.aBufferTable[ui16BCnt].i8MTXNumber =
            (aui32_jpg_mtx_num[pContext->sScan_Encode_Info.ui8NumberOfCodedBuffers - 2]
             >> ui16BCnt) & 0x1;

        if (pContext->sScan_Encode_Info.ui16SScan == 0) {
            ui32NoMCUsToEncode = ui32RemainMCUs;
            // Final scan, may need fewer MCUs than buffer size, calculate the remainder
        } else
            ui32NoMCUsToEncode = pContext->sScan_Encode_Info.ui32NumberMCUsToEncodePerScan;

        pContext->sScan_Encode_Info.ui32CurMCUsOffset =
            pContext->sScan_Encode_Info.ui32NumberMCUsToEncode - ui32RemainMCUs;

        rc = SubmitScanToMTX(pContext, ui16BCnt,
                             pContext->sScan_Encode_Info.aBufferTable[ui16BCnt].i8MTXNumber, ui32NoMCUsToEncode);
        if (rc != IMG_ERR_OK) {
            vaStatus = VA_STATUS_ERROR_UNKNOWN;
            DEBUG_FAILURE;
            return vaStatus;
        }

        ui32RemainMCUs -= ui32NoMCUsToEncode;
    }
    pnw_cmdbuf_insert_command_package(ctx->obj_context,
                                      1 ,
                                      MTX_CMDID_NULL,
                                      NULL,
                                      0);


    psb_buffer_unmap(&cmdbuf->pic_params);
    cmdbuf->pic_params_p = NULL;
    psb_buffer_unmap(&cmdbuf->header_mem);
    cmdbuf->header_mem_p = NULL;
    /*psb_buffer_unmap(&cmdbuf->slice_params);
    cmdbuf->slice_params_p = NULL;*/
    psb_buffer_unmap(ctx->coded_buf->psb_buffer);
    pContext->jpeg_coded_buf.pMemInfo = NULL;
    if (pnw_context_flush_cmdbuf(ctx->obj_context)) {
        vaStatus = VA_STATUS_ERROR_UNKNOWN;
        return vaStatus;
    }

    ctx->obj_context->frame_count++;
    return VA_STATUS_SUCCESS;
}

VAStatus pnw_jpeg_AppendMarkers(object_context_p obj_context, unsigned char *raw_coded_buf)
{
    INIT_CONTEXT_JPEG;
    IMG_UINT16 ui16BCnt;
    TOPAZSC_JPEG_ENCODER_CONTEXT *pContext = ctx->jpeg_ctx;
    BUFFER_HEADER* pBufHeader;
    STREAMTYPEW s_streamW;
    unsigned char *pSegStart = raw_coded_buf;

    if (pSegStart == NULL) {
        return VA_STATUS_ERROR_UNKNOWN;
    }

    pBufHeader = (BUFFER_HEADER *)pSegStart;

    psb__information_message("Number of Coded buffers %d, Per Coded Buffer size : %d\n",
                             pContext->sScan_Encode_Info.ui8NumberOfCodedBuffers, pContext->ui32SizePerCodedBuffer);

    /*The first part of coded buffer contains JPEG headers*/
    pBufHeader->ui32Reserved3 = PNW_JPEG_HEADER_MAX_SIZE;

    pContext->jpeg_coded_buf.ui32BytesWritten = 0;

    for (ui16BCnt = 0;
         ui16BCnt < pContext->sScan_Encode_Info.ui8NumberOfCodedBuffers;
         ui16BCnt++) {
        pBufHeader = (BUFFER_HEADER *)pSegStart;
        pBufHeader->ui32Reserved3 =
            PNW_JPEG_HEADER_MAX_SIZE + pContext->ui32SizePerCodedBuffer * ui16BCnt ;

        psb__information_message("Coded Buffer Part %d, size %d, next part offset: %d\n",
                                 ui16BCnt, pBufHeader->ui32BytesUsed, pBufHeader->ui32Reserved3);

        if (ui16BCnt > 0 && pContext->sScan_Encode_Info.ui8NumberOfCodedBuffers > 1) {
            psb__information_message("Append 2 bytes Reset Interval %d "
                                     "to Coded Buffer Part %d\n", ui16BCnt - 1, ui16BCnt);

            pnw_OutputResetIntervalToCB(
                (IMG_UINT8 *)(pSegStart +
                              sizeof(BUFFER_HEADER) + pBufHeader->ui32BytesUsed),
                ui16BCnt - 1);

            pBufHeader->ui32BytesUsed += 2;
        }

        pContext->jpeg_coded_buf.ui32BytesWritten += pBufHeader->ui32BytesUsed;
        pSegStart = raw_coded_buf + pBufHeader->ui32Reserved3;
    }
    pBufHeader = (BUFFER_HEADER *)pSegStart;
    pBufHeader->ui32Reserved3 = 0; /*Last Part of Coded Buffer*/
    pContext->jpeg_coded_buf.ui32BytesWritten += pBufHeader->ui32BytesUsed;

    psb__information_message("Coded Buffer Part %d, size %d, next part offset: %d\n",
                             ui16BCnt, pBufHeader->ui32BytesUsed, pBufHeader->ui32Reserved3);

    s_streamW.Buffer = pSegStart;
    s_streamW.Offset = (sizeof(BUFFER_HEADER) + pBufHeader->ui32BytesUsed);

    fPutBitsToBuffer(&s_streamW, 2, END_OF_IMAGE);

    pBufHeader->ui32BytesUsed += 2;
    pContext->jpeg_coded_buf.ui32BytesWritten += 2;

    psb__information_message("Add two bytes to last part of coded buffer,"
                             " total: %d\n", pContext->jpeg_coded_buf.ui32BytesWritten);
    return VA_STATUS_SUCCESS;
}

struct format_vtable_s pnw_JPEG_vtable = {
queryConfigAttributes:
    pnw_jpeg_QueryConfigAttributes,
validateConfig:
    pnw_jpeg_ValidateConfig,
createContext:
    pnw_jpeg_CreateContext,
destroyContext:
    pnw_jpeg_DestroyContext,
beginPicture:
    pnw_jpeg_BeginPicture,
renderPicture:
    pnw_jpeg_RenderPicture,
endPicture:
    pnw_jpeg_EndPicture
};