152 lines
4.9 KiB
C++
152 lines
4.9 KiB
C++
/*!
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* \copy
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* Copyright (c) 2009-2013, Cisco Systems
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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*
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* \file pic_queue.c
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*
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* \brief Recycled piture queue implementation
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*
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* \date 03/13/2009 Created
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*
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*************************************************************************************
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*/
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#include "pic_queue.h"
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#include "decoder_context.h"
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#include "codec_def.h"
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#include "mem_align.h"
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namespace WelsDec {
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void_t FreePicture (PPicture pPic);
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///////////////////////////////////Recycled queue management for pictures///////////////////////////////////
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/* ______________________________________
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-->| P0 | P1 | P2 | P3 | P4 | .. | Pn-1 |-->
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--------------------------------------
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*
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* How does it work?
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* node <- next; ++ next;
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*
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*/
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PPicture AllocPicture (PWelsDecoderContext pCtx, const int32_t kiPicWidth, const int32_t kiPicHeight) {
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PPicture pPic = NULL;
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int32_t iPicWidth = 0;
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int32_t iPicHeight = 0;
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int32_t iPicChromaWidth = 0;
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int32_t iPicChromaHeight = 0;
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int32_t iLumaSize = 0;
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int32_t iChromaSize = 0;
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pPic = (PPicture) WelsMalloc (sizeof (SPicture), "PPicture");
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WELS_VERIFY_RETURN_IF (NULL, NULL == pPic);
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memset (pPic, 0, sizeof (SPicture));
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iPicWidth = WELS_ALIGN (kiPicWidth + (PADDING_LENGTH << 1), PICTURE_RESOLUTION_ALIGNMENT);
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iPicHeight = WELS_ALIGN (kiPicHeight + (PADDING_LENGTH << 1), PICTURE_RESOLUTION_ALIGNMENT);
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iPicChromaWidth = iPicWidth >> 1;
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iPicChromaHeight = iPicHeight >> 1;
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iLumaSize = iPicWidth * iPicHeight;
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iChromaSize = iPicChromaWidth * iPicChromaHeight;
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if (pCtx->iDecoderMode == SW_MODE) {
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pPic->pBuffer[0] = static_cast<uint8_t*> (WelsMalloc (iLumaSize /* luma */
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+ (iChromaSize << 1) /* Cb,Cr */, "_pic->buffer[0]"));
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WELS_VERIFY_RETURN_PROC_IF (NULL, NULL == pPic->pBuffer[0], FreePicture (pPic));
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pPic->iLinesize[0] = iPicWidth;
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pPic->iLinesize[1] = pPic->iLinesize[2] = iPicChromaWidth;
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pPic->pBuffer[1] = pPic->pBuffer[0] + iLumaSize;
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pPic->pBuffer[2] = pPic->pBuffer[1] + iChromaSize;
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pPic->pData[0] = pPic->pBuffer[0] + (1 + pPic->iLinesize[0]) * PADDING_LENGTH;
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pPic->pData[1] = pPic->pBuffer[1] + /*WELS_ALIGN*/ (((1 + pPic->iLinesize[1]) * PADDING_LENGTH) >> 1);
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pPic->pData[2] = pPic->pBuffer[2] + /*WELS_ALIGN*/ (((1 + pPic->iLinesize[2]) * PADDING_LENGTH) >> 1);
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}
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pPic->iPlanes = 3; // yv12 in default
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pPic->iWidthInPixel = kiPicWidth;
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pPic->iHeightInPixel = kiPicHeight;
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pPic->iFrameNum = -1;
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pPic->bAvailableFlag = true;
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return pPic;
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}
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void_t FreePicture (PPicture pPic) {
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if (NULL != pPic) {
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if (pPic->pBuffer[0]) {
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WelsFree (pPic->pBuffer[0], "pPic->pBuffer[0]");
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}
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WelsFree (pPic, "pPic");
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pPic = NULL;
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}
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}
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PPicture PrefetchPic (PPicBuff pPicBuf) {
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int32_t iPicIdx = 0;
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PPicture pPic = NULL;
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if (pPicBuf->iCapacity == 0) {
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return NULL;
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}
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for (iPicIdx = pPicBuf->iCurrentIdx + 1; iPicIdx < pPicBuf->iCapacity ; ++iPicIdx) {
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if (pPicBuf->ppPic[iPicIdx] != NULL && pPicBuf->ppPic[iPicIdx]->bAvailableFlag
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&& !pPicBuf->ppPic[iPicIdx]->bUsedAsRef) {
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pPic = pPicBuf->ppPic[iPicIdx];
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break;
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}
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}
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if (pPic != NULL) {
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pPicBuf->iCurrentIdx = iPicIdx;
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return pPic;
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}
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for (iPicIdx = 0 ; iPicIdx < pPicBuf->iCurrentIdx ; ++iPicIdx) {
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if (pPicBuf->ppPic[iPicIdx] != NULL && pPicBuf->ppPic[iPicIdx]->bAvailableFlag
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&& !pPicBuf->ppPic[iPicIdx]->bUsedAsRef) {
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pPic = pPicBuf->ppPic[iPicIdx];
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break;
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}
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}
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pPicBuf->iCurrentIdx = iPicIdx;
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return pPic;
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}
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} // namespace WelsDec
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