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/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
*************************************************************************
* @file VideoEditorBuffer.c
* @brief StageFright shell Buffer
*************************************************************************
*/
#undef M4OSA_TRACE_LEVEL
#define M4OSA_TRACE_LEVEL 1
#include <inttypes.h>
#include "VideoEditorBuffer.h"
#include "utils/Log.h"
#define VIDEOEDITOR_BUFFEPOOL_MAX_NAME_SIZE 40
#define VIDEOEDITOR_SAFE_FREE(p) \
{ \
if(M4OSA_NULL != p) \
{ \
free(p); \
p = M4OSA_NULL; \
} \
}
/**
************************************************************************
M4OSA_ERR VIDEOEDITOR_BUFFER_allocatePool(VIDEOEDITOR_BUFFER_Pool** ppool,
* M4OSA_UInt32 nbBuffers)
* @brief Allocate a pool of nbBuffers buffers
*
* @param ppool : IN The buffer pool to create
* @param nbBuffers : IN The number of buffers in the pool
* @param poolName : IN a name given to the pool
* @return Error code
************************************************************************
*/
M4OSA_ERR VIDEOEDITOR_BUFFER_allocatePool(VIDEOEDITOR_BUFFER_Pool** ppool,
M4OSA_UInt32 nbBuffers, M4OSA_Char* poolName)
{
M4OSA_ERR lerr = M4NO_ERROR;
VIDEOEDITOR_BUFFER_Pool* pool;
M4OSA_UInt32 index;
ALOGV("VIDEOEDITOR_BUFFER_allocatePool : ppool = %p nbBuffers = %" PRIu32,
ppool, nbBuffers);
pool = M4OSA_NULL;
pool = (VIDEOEDITOR_BUFFER_Pool*)M4OSA_32bitAlignedMalloc(
sizeof(VIDEOEDITOR_BUFFER_Pool), VIDEOEDITOR_BUFFER_EXTERNAL,
(M4OSA_Char*)("VIDEOEDITOR_BUFFER_allocatePool: pool"));
if (M4OSA_NULL == pool)
{
lerr = M4ERR_ALLOC;
goto VIDEOEDITOR_BUFFER_allocatePool_Cleanup;
}
ALOGV("VIDEOEDITOR_BUFFER_allocatePool : Allocating Pool buffers");
pool->pNXPBuffer = M4OSA_NULL;
pool->pNXPBuffer = (VIDEOEDITOR_BUFFER_Buffer*)M4OSA_32bitAlignedMalloc(
sizeof(VIDEOEDITOR_BUFFER_Buffer)*nbBuffers,
VIDEOEDITOR_BUFFER_EXTERNAL,
(M4OSA_Char*)("BUFFER_allocatePool: pNXPBuffer"));
if(M4OSA_NULL == pool->pNXPBuffer)
{
lerr = M4ERR_ALLOC;
goto VIDEOEDITOR_BUFFER_allocatePool_Cleanup;
}
for (index = 0; index < nbBuffers; index++)
{
pool->pNXPBuffer[index].pData = M4OSA_NULL;
}
ALOGV("VIDEOEDITOR_BUFFER_allocatePool : Allocating Pool name buffer");
pool->poolName = M4OSA_NULL;
pool->poolName = (M4OSA_Char*)M4OSA_32bitAlignedMalloc(
VIDEOEDITOR_BUFFEPOOL_MAX_NAME_SIZE,VIDEOEDITOR_BUFFER_EXTERNAL,
(M4OSA_Char*)("VIDEOEDITOR_BUFFER_allocatePool: poolname"));
if(pool->poolName == M4OSA_NULL)
{
lerr = M4ERR_ALLOC;
goto VIDEOEDITOR_BUFFER_allocatePool_Cleanup;
}
ALOGV("VIDEOEDITOR_BUFFER_allocatePool : Assigning Pool name buffer");
memset((void *)pool->poolName, 0,VIDEOEDITOR_BUFFEPOOL_MAX_NAME_SIZE);
memcpy((void *)pool->poolName, (void *)poolName,
VIDEOEDITOR_BUFFEPOOL_MAX_NAME_SIZE-1);
pool->NB = nbBuffers;
VIDEOEDITOR_BUFFER_allocatePool_Cleanup:
if(M4NO_ERROR != lerr)
{
VIDEOEDITOR_SAFE_FREE(pool->pNXPBuffer);
VIDEOEDITOR_SAFE_FREE(pool->poolName);
VIDEOEDITOR_SAFE_FREE(pool);
}
*ppool = pool;
ALOGV("VIDEOEDITOR_BUFFER_allocatePool END");
return lerr;
}
/**
************************************************************************
M4OSA_ERR VIDEOEDITOR_BUFFER_freePool(VIDEOEDITOR_BUFFER_Pool* ppool)
* @brief Deallocate a buffer pool
*
* @param ppool : IN The buffer pool to free
* @return Error code
************************************************************************
*/
M4OSA_ERR VIDEOEDITOR_BUFFER_freePool(VIDEOEDITOR_BUFFER_Pool* ppool)
{
M4OSA_ERR err;
M4OSA_UInt32 j = 0;
ALOGV("VIDEOEDITOR_BUFFER_freePool : ppool = %p", ppool);
err = M4NO_ERROR;
for (j = 0; j < ppool->NB; j++)
{
if(M4OSA_NULL != ppool->pNXPBuffer[j].pData)
{
free(ppool->pNXPBuffer[j].pData);
ppool->pNXPBuffer[j].pData = M4OSA_NULL;
}
}
if(ppool != M4OSA_NULL)
{
SAFE_FREE(ppool->pNXPBuffer);
SAFE_FREE(ppool->poolName);
SAFE_FREE(ppool);
}
return(err);
}
/**
************************************************************************
M4OSA_ERR VIDEOEDITOR_BUFFER_getBuffer(VIDEOEDITOR_BUFFER_Pool* ppool,
* VIDEOEDITOR_BUFFER_Buffer** pNXPBuffer)
* @brief Returns a buffer in a given state
*
* @param ppool : IN The buffer pool
* @param desiredState : IN The buffer state
* @param pNXPBuffer : IN The selected buffer
* @return Error code
************************************************************************
*/
M4OSA_ERR VIDEOEDITOR_BUFFER_getBuffer(VIDEOEDITOR_BUFFER_Pool* ppool,
VIDEOEDITOR_BUFFER_State desiredState,
VIDEOEDITOR_BUFFER_Buffer** pNXPBuffer)
{
M4OSA_ERR err = M4NO_ERROR;
M4OSA_Bool bFound = M4OSA_FALSE;
M4OSA_UInt32 i, ibuf;
ALOGV("VIDEOEDITOR_BUFFER_getBuffer from %s in state=%d",
ppool->poolName, desiredState);
ibuf = 0;
for (i=0; i < ppool->NB; i++)
{
bFound = (ppool->pNXPBuffer[i].state == desiredState);
if (bFound)
{
ibuf = i;
break;
}
}
if(!bFound)
{
ALOGV("VIDEOEDITOR_BUFFER_getBuffer No buffer available in state %d",
desiredState);
*pNXPBuffer = M4OSA_NULL;
return M4ERR_NO_BUFFER_AVAILABLE;
}
/* case where a buffer has been found */
*pNXPBuffer = &(ppool->pNXPBuffer[ibuf]);
ALOGV("VIDEOEDITOR_BUFFER_getBuffer: idx = %" PRIu32, ibuf);
return(err);
}
M4OSA_ERR VIDEOEDITOR_BUFFER_initPoolBuffers(VIDEOEDITOR_BUFFER_Pool* pool,
M4OSA_UInt32 lSize)
{
M4OSA_ERR err = M4NO_ERROR;
M4OSA_UInt32 index, j;
/**
* Initialize all the buffers in the pool */
for(index = 0; index < pool->NB; index++)
{
pool->pNXPBuffer[index].pData = M4OSA_NULL;
pool->pNXPBuffer[index].pData = (M4OSA_Void*)M4OSA_32bitAlignedMalloc(
lSize, VIDEOEDITOR_BUFFER_EXTERNAL,
(M4OSA_Char*)("BUFFER_initPoolBuffers: Buffer data"));
if(M4OSA_NULL == pool->pNXPBuffer[index].pData)
{
for (j = 0; j < index; j++)
{
if(M4OSA_NULL != pool->pNXPBuffer[j].pData)
{
free(pool->pNXPBuffer[j].pData);
pool->pNXPBuffer[j].pData = M4OSA_NULL;
}
}
err = M4ERR_ALLOC;
return err;
}
pool->pNXPBuffer[index].size = 0;
pool->pNXPBuffer[index].state = VIDEOEDITOR_BUFFER_kEmpty;
pool->pNXPBuffer[index].idx = index;
pool->pNXPBuffer[index].buffCTS = -1;
}
return err;
}
M4OSA_ERR VIDEOEDITOR_BUFFER_getOldestBuffer(VIDEOEDITOR_BUFFER_Pool *pool,
VIDEOEDITOR_BUFFER_State desiredState,
VIDEOEDITOR_BUFFER_Buffer** pNXPBuffer)
{
M4OSA_ERR err = M4NO_ERROR;
M4OSA_UInt32 index, j;
M4_MediaTime candidateTimeStamp = (M4_MediaTime)0x7ffffff;
M4OSA_Bool bFound = M4OSA_FALSE;
*pNXPBuffer = M4OSA_NULL;
for(index = 0; index< pool->NB; index++)
{
if(pool->pNXPBuffer[index].state == desiredState)
{
if(pool->pNXPBuffer[index].buffCTS <= candidateTimeStamp)
{
bFound = M4OSA_TRUE;
candidateTimeStamp = pool->pNXPBuffer[index].buffCTS;
*pNXPBuffer = &(pool->pNXPBuffer[index]);
}
}
}
if(M4OSA_FALSE == bFound)
{
ALOGV("VIDEOEDITOR_BUFFER_getOldestBuffer WARNING no buffer available");
err = M4ERR_NO_BUFFER_AVAILABLE;
}
return err;
}
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