ref: b2066e1dc2c93b00400acfed1ef9ea041a0cf832
dir: /codec/decoder/core/src/pic_queue.cpp/
/*! * \copy * Copyright (c) 2009-2013, Cisco Systems * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * * * \file pic_queue.c * * \brief Recycled piture queue implementation * * \date 03/13/2009 Created * ************************************************************************************* */ #include <string.h> #include "pic_queue.h" #include "wels_const.h" #include "utils.h" #include "macros.h" #include "decoder_context.h" #include "codec_def.h" #include "mem_align.h" namespace WelsDec { void_t FreePicture (PPicture pPic); ///////////////////////////////////Recycled queue management for pictures/////////////////////////////////// /* ______________________________________ -->| P0 | P1 | P2 | P3 | P4 | .. | Pn-1 |--> -------------------------------------- * * How does it work? * node <- next; ++ next; * */ PPicture AllocPicture (PWelsDecoderContext pCtx, const int32_t kiPicWidth, const int32_t kiPicHeight) { PPicture pPic = NULL; int32_t iPicWidth = 0; int32_t iPicHeight = 0; int32_t iPicChromaWidth = 0; int32_t iPicChromaHeight = 0; int32_t iLumaSize = 0; int32_t iChromaSize = 0; pPic = (PPicture) WelsMalloc (sizeof (SPicture), "PPicture"); WELS_VERIFY_RETURN_IF (NULL, NULL == pPic); memset (pPic, 0, sizeof (SPicture)); iPicWidth = WELS_ALIGN (kiPicWidth + (PADDING_LENGTH << 1), PICTURE_RESOLUTION_ALIGNMENT); iPicHeight = WELS_ALIGN (kiPicHeight + (PADDING_LENGTH << 1), PICTURE_RESOLUTION_ALIGNMENT); iPicChromaWidth = iPicWidth >> 1; iPicChromaHeight = iPicHeight >> 1; iLumaSize = iPicWidth * iPicHeight; iChromaSize = iPicChromaWidth * iPicChromaHeight; if (pCtx->iDecoderMode == SW_MODE) { pPic->pBuffer[0] = static_cast<uint8_t*> (WelsMalloc (iLumaSize /* luma */ + (iChromaSize << 1) /* Cb,Cr */, "_pic->buffer[0]")); WELS_VERIFY_RETURN_PROC_IF (NULL, NULL == pPic->pBuffer[0], FreePicture (pPic)); pPic->iLinesize[0] = iPicWidth; pPic->iLinesize[1] = pPic->iLinesize[2] = iPicChromaWidth; pPic->pBuffer[1] = pPic->pBuffer[0] + iLumaSize; pPic->pBuffer[2] = pPic->pBuffer[1] + iChromaSize; pPic->pData[0] = pPic->pBuffer[0] + (1 + pPic->iLinesize[0]) * PADDING_LENGTH; pPic->pData[1] = pPic->pBuffer[1] + /*WELS_ALIGN*/ (((1 + pPic->iLinesize[1]) * PADDING_LENGTH) >> 1); pPic->pData[2] = pPic->pBuffer[2] + /*WELS_ALIGN*/ (((1 + pPic->iLinesize[2]) * PADDING_LENGTH) >> 1); } pPic->iPlanes = 3; // yv12 in default pPic->iWidthInPixel = kiPicWidth; pPic->iHeightInPixel = kiPicHeight; pPic->iFrameNum = -1; pPic->bAvailableFlag = true; return pPic; } void_t FreePicture (PPicture pPic) { if (NULL != pPic) { if (pPic->pBuffer[0]) { WelsFree (pPic->pBuffer[0], "pPic->pBuffer[0]"); } WelsFree (pPic, "pPic"); pPic = NULL; } } PPicture PrefetchPic (PPicBuff pPicBuf) { int32_t iPicIdx = 0; PPicture pPic = NULL; if (pPicBuf->iCapacity == 0) { return NULL; } for (iPicIdx = pPicBuf->iCurrentIdx + 1; iPicIdx < pPicBuf->iCapacity ; ++iPicIdx) { if (pPicBuf->ppPic[iPicIdx] != NULL && pPicBuf->ppPic[iPicIdx]->bAvailableFlag && !pPicBuf->ppPic[iPicIdx]->bUsedAsRef) { pPic = pPicBuf->ppPic[iPicIdx]; break; } } if (pPic != NULL) { pPicBuf->iCurrentIdx = iPicIdx; return pPic; } for (iPicIdx = 0 ; iPicIdx < pPicBuf->iCurrentIdx ; ++iPicIdx) { if (pPicBuf->ppPic[iPicIdx] != NULL && pPicBuf->ppPic[iPicIdx]->bAvailableFlag && !pPicBuf->ppPic[iPicIdx]->bUsedAsRef) { pPic = pPicBuf->ppPic[iPicIdx]; break; } } pPicBuf->iCurrentIdx = iPicIdx; return pPic; } } // namespace WelsDec