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/*
* This file is part of Media Player Classic HomeCinema.
*
* MPC-HC is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* MPC-HC is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avcodec.h"
#include "internal.h"
#include "ac3.h"
#include "ac3_parser.h"
#include "ac3dec.h"
#include "ac3dec_data.h"
#ifdef __GNUC__
#define _aligned_malloc __mingw_aligned_malloc
#define _aligned_realloc __mingw_aligned_realloc
#define _aligned_free __mingw_aligned_free
#endif
int FFGetChannelMap(struct AVCodecContext * avctx)
{
switch (avctx->codec_id)
{
case CODEC_ID_EAC3 :
case CODEC_ID_AC3 :
{
AC3DecodeContext *s = avctx->priv_data;
// Mapping index for s_scmap_ac3
switch (s->channel_mode)
{
case AC3_CHMODE_DUALMONO: return 0;
case AC3_CHMODE_MONO : return 1;
case AC3_CHMODE_STEREO : return 2;
case AC3_CHMODE_3F : return 3;
case AC3_CHMODE_2F1R : return 4;
case AC3_CHMODE_3F1R : return 5;
case AC3_CHMODE_2F2R : return 6;
case AC3_CHMODE_3F2R : return (s->lfe_on ? 8 : 7);
}
}
break;
case CODEC_ID_MLP :
{
// Mapping index for s_scmap_lpcm
if (avctx->channels<=8)
return avctx->channels-1;
else
return -1;
}
default :
return 2;
}
return -1;
}
void* FF_aligned_malloc(size_t size, size_t alignment)
{
return _aligned_malloc(size,alignment);
}
void FF_aligned_free(void* mem_ptr)
{
if (mem_ptr)
_aligned_free(mem_ptr);
}
void* FF_aligned_realloc(void *ptr,size_t size,size_t alignment)
{
if (!ptr)
return FF_aligned_malloc(size,alignment);
else
if (size==0)
{
FF_aligned_free(ptr);
return NULL;
}
else
return _aligned_realloc(ptr,size,alignment);
}
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