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899 lines
24 KiB
899 lines
24 KiB
/*****************************************************************************
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* araw.c: Pseudo audio decoder; for raw pcm data
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*****************************************************************************
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* Copyright (C) 2001, 2003 VLC authors and VideoLAN
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* $Id$
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*
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* Authors: Laurent Aimar <fenrir@via.ecp.fr>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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/*****************************************************************************
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* Preamble
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*****************************************************************************/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <math.h>
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#include <assert.h>
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#include <vlc_common.h>
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#include <vlc_plugin.h>
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#include <vlc_codec.h>
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#include <vlc_aout.h>
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/*****************************************************************************
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* Module descriptor
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*****************************************************************************/
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static int DecoderOpen ( vlc_object_t * );
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static void DecoderClose( vlc_object_t * );
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#ifdef ENABLE_SOUT
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static int EncoderOpen ( vlc_object_t * );
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#endif
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vlc_module_begin ()
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/* audio decoder module */
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set_description( N_("Raw/Log Audio decoder") )
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set_capability( "decoder", 100 )
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set_category( CAT_INPUT )
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set_subcategory( SUBCAT_INPUT_ACODEC )
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set_callbacks( DecoderOpen, DecoderClose )
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|
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#ifdef ENABLE_SOUT
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/* audio encoder submodule */
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add_submodule ()
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set_description( N_("Raw audio encoder") )
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set_capability( "encoder", 150 )
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set_callbacks( EncoderOpen, NULL )
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#endif
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vlc_module_end ()
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/*****************************************************************************
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* Local prototypes
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*****************************************************************************/
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static block_t *DecodeBlock( decoder_t *, block_t ** );
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struct decoder_sys_t
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{
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void (*decode) (void *, const uint8_t *, unsigned);
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size_t framebits;
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date_t end_date;
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};
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static const uint16_t pi_channels_maps[] =
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{
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0,
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AOUT_CHAN_CENTER, AOUT_CHANS_2_0, AOUT_CHANS_3_0,
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AOUT_CHANS_4_0, AOUT_CHANS_5_0, AOUT_CHANS_5_1,
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AOUT_CHANS_7_0, AOUT_CHANS_7_1, AOUT_CHANS_8_1,
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};
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static void S8Decode( void *, const uint8_t *, unsigned );
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static void U16BDecode( void *, const uint8_t *, unsigned );
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static void U16LDecode( void *, const uint8_t *, unsigned );
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static void S16IDecode( void *, const uint8_t *, unsigned );
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static void S20BDecode( void *, const uint8_t *, unsigned );
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static void U24BDecode( void *, const uint8_t *, unsigned );
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static void U24LDecode( void *, const uint8_t *, unsigned );
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static void S24BDecode( void *, const uint8_t *, unsigned );
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static void S24LDecode( void *, const uint8_t *, unsigned );
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static void S24B32Decode( void *, const uint8_t *, unsigned );
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static void S24L32Decode( void *, const uint8_t *, unsigned );
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static void U32BDecode( void *, const uint8_t *, unsigned );
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static void U32LDecode( void *, const uint8_t *, unsigned );
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static void S32IDecode( void *, const uint8_t *, unsigned );
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static void F32NDecode( void *, const uint8_t *, unsigned );
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static void F32IDecode( void *, const uint8_t *, unsigned );
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static void F64NDecode( void *, const uint8_t *, unsigned );
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static void F64IDecode( void *, const uint8_t *, unsigned );
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static void DAT12Decode( void *, const uint8_t *, unsigned );
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/*****************************************************************************
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* DecoderOpen: probe the decoder and return score
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*****************************************************************************/
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static int DecoderOpen( vlc_object_t *p_this )
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{
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decoder_t *p_dec = (decoder_t*)p_this;
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vlc_fourcc_t format = p_dec->fmt_in.i_codec;
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switch( p_dec->fmt_in.i_codec )
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{
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case VLC_FOURCC('a','r','a','w'):
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case VLC_FOURCC('a','f','l','t'):
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/* _signed_ big endian samples (mov) */
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case VLC_FOURCC('t','w','o','s'):
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/* _signed_ little endian samples (mov) */
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case VLC_FOURCC('s','o','w','t'):
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format =
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vlc_fourcc_GetCodecAudio( p_dec->fmt_in.i_codec,
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p_dec->fmt_in.audio.i_bitspersample );
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if( !format )
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{
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msg_Err( p_dec, "bad parameters(bits/sample)" );
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return VLC_EGENERIC;
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}
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break;
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}
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void (*decode) (void *, const uint8_t *, unsigned) = NULL;
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uint_fast8_t bits;
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switch( format )
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{
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#ifdef WORDS_BIGENDIAN
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case VLC_CODEC_F64L:
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#else
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case VLC_CODEC_F64B:
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#endif
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format = VLC_CODEC_FL64;
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decode = F64IDecode;
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bits = 64;
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break;
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case VLC_CODEC_FL64:
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decode = F64NDecode;
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bits = 64;
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break;
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#ifdef WORDS_BIGENDIAN
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case VLC_CODEC_F32L:
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#else
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case VLC_CODEC_F32B:
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#endif
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format = VLC_CODEC_FL32;
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decode = F32IDecode;
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bits = 32;
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break;
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case VLC_CODEC_FL32:
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decode = F32NDecode;
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bits = 32;
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break;
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case VLC_CODEC_U32B:
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format = VLC_CODEC_S32N;
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decode = U32BDecode;
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bits = 32;
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break;
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case VLC_CODEC_U32L:
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format = VLC_CODEC_S32N;
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decode = U32LDecode;
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bits = 32;
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break;
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case VLC_CODEC_S32I:
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format = VLC_CODEC_S32N;
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decode = S32IDecode;
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case VLC_CODEC_S32N:
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bits = 32;
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break;
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case VLC_CODEC_S24B32:
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format = VLC_CODEC_S32N;
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decode = S24B32Decode;
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bits = 32;
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break;
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case VLC_CODEC_S24L32:
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format = VLC_CODEC_S32N;
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decode = S24L32Decode;
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bits = 32;
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break;
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case VLC_CODEC_U24B:
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format = VLC_CODEC_S32N;
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decode = U24BDecode;
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bits = 24;
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break;
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case VLC_CODEC_U24L:
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format = VLC_CODEC_S32N;
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decode = U24LDecode;
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bits = 24;
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break;
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case VLC_CODEC_S24B:
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format = VLC_CODEC_S32N;
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decode = S24BDecode;
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bits = 24;
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break;
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case VLC_CODEC_S24L:
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format = VLC_CODEC_S32N;
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decode = S24LDecode;
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bits = 24;
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break;
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case VLC_CODEC_S20B:
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format = VLC_CODEC_S32N;
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decode = S20BDecode;
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bits = 20;
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break;
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case VLC_CODEC_U16B:
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format = VLC_CODEC_S16N;
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decode = U16BDecode;
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bits = 16;
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break;
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case VLC_CODEC_U16L:
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format = VLC_CODEC_S16N;
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decode = U16LDecode;
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bits = 16;
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break;
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case VLC_CODEC_S16I:
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format = VLC_CODEC_S16N;
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decode = S16IDecode;
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case VLC_CODEC_S16N:
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bits = 16;
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break;
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case VLC_CODEC_DAT12:
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format = VLC_CODEC_S16N;
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decode = DAT12Decode;
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bits = 12;
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break;
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case VLC_CODEC_S8:
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decode = S8Decode;
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format = VLC_CODEC_U8;
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case VLC_CODEC_U8:
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bits = 8;
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break;
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default:
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return VLC_EGENERIC;
|
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}
|
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if( p_dec->fmt_in.audio.i_channels <= 0 ||
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p_dec->fmt_in.audio.i_channels > AOUT_CHAN_MAX )
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{
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msg_Err( p_dec, "bad channels count (1-9): %i",
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p_dec->fmt_in.audio.i_channels );
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return VLC_EGENERIC;
|
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}
|
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if( p_dec->fmt_in.audio.i_rate <= 0 )
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{
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msg_Err( p_dec, "bad samplerate: %d Hz", p_dec->fmt_in.audio.i_rate );
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return VLC_EGENERIC;
|
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}
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msg_Dbg( p_dec, "samplerate:%dHz channels:%d bits/sample:%d",
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p_dec->fmt_in.audio.i_rate, p_dec->fmt_in.audio.i_channels,
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p_dec->fmt_in.audio.i_bitspersample );
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|
|
/* Allocate the memory needed to store the decoder's structure */
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|
decoder_sys_t *p_sys = malloc(sizeof(*p_sys));
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if( unlikely(p_sys == NULL) )
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return VLC_ENOMEM;
|
|
|
|
/* Set output properties */
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p_dec->fmt_out.i_cat = AUDIO_ES;
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p_dec->fmt_out.i_codec = format;
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|
p_dec->fmt_out.audio.i_format = format;
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|
p_dec->fmt_out.audio.i_rate = p_dec->fmt_in.audio.i_rate;
|
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if( p_dec->fmt_in.audio.i_physical_channels )
|
|
p_dec->fmt_out.audio.i_physical_channels =
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p_dec->fmt_in.audio.i_physical_channels;
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else
|
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p_dec->fmt_out.audio.i_physical_channels =
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pi_channels_maps[p_dec->fmt_in.audio.i_channels];
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if( p_dec->fmt_in.audio.i_original_channels )
|
|
p_dec->fmt_out.audio.i_original_channels =
|
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p_dec->fmt_in.audio.i_original_channels;
|
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else
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p_dec->fmt_out.audio.i_original_channels =
|
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p_dec->fmt_out.audio.i_physical_channels;
|
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aout_FormatPrepare( &p_dec->fmt_out.audio );
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|
|
p_sys->decode = decode;
|
|
p_sys->framebits = bits * p_dec->fmt_out.audio.i_channels;
|
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assert( p_sys->framebits );
|
|
|
|
date_Init( &p_sys->end_date, p_dec->fmt_out.audio.i_rate, 1 );
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date_Set( &p_sys->end_date, 0 );
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|
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p_dec->pf_decode_audio = DecodeBlock;
|
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p_dec->p_sys = p_sys;
|
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|
|
return VLC_SUCCESS;
|
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}
|
|
|
|
/****************************************************************************
|
|
* DecodeBlock: the whole thing
|
|
****************************************************************************
|
|
* This function must be fed with whole samples (see nBlockAlign).
|
|
****************************************************************************/
|
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static block_t *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
|
|
{
|
|
decoder_sys_t *p_sys = p_dec->p_sys;
|
|
if( pp_block == NULL )
|
|
return NULL;
|
|
|
|
block_t *p_block = *pp_block;
|
|
if( p_block == NULL )
|
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return NULL;
|
|
*pp_block = NULL;
|
|
|
|
if( p_block->i_pts > VLC_TS_INVALID &&
|
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p_block->i_pts != date_Get( &p_sys->end_date ) )
|
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{
|
|
date_Set( &p_sys->end_date, p_block->i_pts );
|
|
}
|
|
else if( !date_Get( &p_sys->end_date ) )
|
|
/* We've just started the stream, wait for the first PTS. */
|
|
goto skip;
|
|
|
|
unsigned samples = (8 * p_block->i_buffer) / p_sys->framebits;
|
|
if( samples == 0 )
|
|
goto skip;
|
|
|
|
if( p_sys->decode != NULL )
|
|
{
|
|
block_t *p_out = decoder_NewAudioBuffer( p_dec, samples );
|
|
if( p_out == NULL )
|
|
goto skip;
|
|
|
|
p_sys->decode( p_out->p_buffer, p_block->p_buffer,
|
|
samples * p_dec->fmt_in.audio.i_channels );
|
|
block_Release( p_block );
|
|
p_block = p_out;
|
|
}
|
|
else
|
|
{
|
|
decoder_UpdateAudioFormat( p_dec );
|
|
p_block->i_nb_samples = samples;
|
|
p_block->i_buffer = samples * (p_sys->framebits / 8);
|
|
}
|
|
|
|
p_block->i_pts = date_Get( &p_sys->end_date );
|
|
p_block->i_length = date_Increment( &p_sys->end_date, samples )
|
|
- p_block->i_pts;
|
|
return p_block;
|
|
skip:
|
|
block_Release( p_block );
|
|
return NULL;
|
|
}
|
|
|
|
static void S8Decode( void *outp, const uint8_t *in, unsigned samples )
|
|
{
|
|
uint8_t *out = outp;
|
|
|
|
for( size_t i = 0; i < samples; i++ )
|
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out[i] = in[i] ^ 0x80;
|
|
}
|
|
|
|
static void U16BDecode( void *outp, const uint8_t *in, unsigned samples )
|
|
{
|
|
uint16_t *out = outp;
|
|
|
|
for( size_t i = 0; i < samples; i++ )
|
|
{
|
|
*(out++) = GetWBE( in ) - 0x8000;
|
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in += 2;
|
|
}
|
|
}
|
|
|
|
static void U16LDecode( void *outp, const uint8_t *in, unsigned samples )
|
|
{
|
|
uint16_t *out = outp;
|
|
|
|
for( size_t i = 0; i < samples; i++ )
|
|
{
|
|
*(out++) = GetWLE( in ) - 0x8000;
|
|
in += 2;
|
|
}
|
|
}
|
|
|
|
static void S16IDecode( void *out, const uint8_t *in, unsigned samples )
|
|
{
|
|
swab( in, out, samples * 2 );
|
|
}
|
|
|
|
static void S20BDecode( void *outp, const uint8_t *in, unsigned samples )
|
|
{
|
|
int32_t *out = outp;
|
|
|
|
while( samples >= 2 )
|
|
{
|
|
uint32_t dw = U32_AT(in);
|
|
in += 4;
|
|
*(out++) = dw & ~0xFFF;
|
|
*(out++) = (dw << 20) | (*in << 12);
|
|
in++;
|
|
samples -= 2;
|
|
}
|
|
|
|
/* No U32_AT() for the last odd sample: avoid off-by-one overflow! */
|
|
if( samples )
|
|
*(out++) = (U16_AT(in) << 16) | ((in[2] & 0xF0) << 8);
|
|
}
|
|
|
|
static void U24BDecode( void *outp, const uint8_t *in, unsigned samples )
|
|
{
|
|
uint32_t *out = outp;
|
|
|
|
for( size_t i = 0; i < samples; i++ )
|
|
{
|
|
uint32_t s = ((in[0] << 24) | (in[1] << 16) | (in[2] << 8)) - 0x80000000;
|
|
*(out++) = s;
|
|
in += 3;
|
|
}
|
|
}
|
|
|
|
static void U24LDecode( void *outp, const uint8_t *in, unsigned samples )
|
|
{
|
|
uint32_t *out = outp;
|
|
|
|
for( size_t i = 0; i < samples; i++ )
|
|
{
|
|
uint32_t s = ((in[2] << 24) | (in[1] << 16) | (in[0] << 8)) - 0x80000000;
|
|
*(out++) = s;
|
|
in += 3;
|
|
}
|
|
}
|
|
|
|
static void S24BDecode( void *outp, const uint8_t *in, unsigned samples )
|
|
{
|
|
uint32_t *out = outp;
|
|
|
|
for( size_t i = 0; i < samples; i++ )
|
|
{
|
|
uint32_t s = ((in[0] << 24) | (in[1] << 16) | (in[2] << 8));
|
|
*(out++) = s;
|
|
in += 3;
|
|
}
|
|
}
|
|
|
|
static void S24LDecode( void *outp, const uint8_t *in, unsigned samples )
|
|
{
|
|
uint32_t *out = outp;
|
|
|
|
for( size_t i = 0; i < samples; i++ )
|
|
{
|
|
uint32_t s = ((in[2] << 24) | (in[1] << 16) | (in[0] << 8));
|
|
*(out++) = s;
|
|
in += 3;
|
|
}
|
|
}
|
|
|
|
static void S24B32Decode( void *outp, const uint8_t *in, unsigned samples )
|
|
{
|
|
uint32_t *out = outp;
|
|
|
|
for( size_t i = 0; i < samples; i++ )
|
|
{
|
|
*(out++) = GetDWBE( in ) << 8;
|
|
in += 4;
|
|
}
|
|
}
|
|
|
|
static void S24L32Decode( void *outp, const uint8_t *in, unsigned samples )
|
|
{
|
|
uint32_t *out = outp;
|
|
|
|
for( size_t i = 0; i < samples; i++ )
|
|
{
|
|
*(out++) = GetDWLE( in ) << 8;
|
|
in += 4;
|
|
}
|
|
}
|
|
|
|
static void U32BDecode( void *outp, const uint8_t *in, unsigned samples )
|
|
{
|
|
uint32_t *out = outp;
|
|
|
|
for( size_t i = 0; i < samples; i++ )
|
|
{
|
|
*(out++) = GetDWBE( in ) - 0x80000000;
|
|
in += 4;
|
|
}
|
|
}
|
|
|
|
static void U32LDecode( void *outp, const uint8_t *in, unsigned samples )
|
|
{
|
|
uint32_t *out = outp;
|
|
|
|
for( size_t i = 0; i < samples; i++ )
|
|
{
|
|
*(out++) = GetDWLE( in ) - 0x80000000;
|
|
in += 4;
|
|
}
|
|
}
|
|
|
|
static void S32IDecode( void *outp, const uint8_t *in, unsigned samples )
|
|
{
|
|
int32_t *out = outp;
|
|
|
|
for( size_t i = 0; i < samples; i++ )
|
|
{
|
|
#ifdef WORDS_BIGENDIAN
|
|
*(out++) = GetDWLE( in );
|
|
#else
|
|
*(out++) = GetDWBE( in );
|
|
#endif
|
|
in += 4;
|
|
}
|
|
}
|
|
|
|
static void F32NDecode( void *outp, const uint8_t *in, unsigned samples )
|
|
{
|
|
float *out = outp;
|
|
|
|
for( size_t i = 0; i < samples; i++ )
|
|
{
|
|
memcpy( out, in, sizeof(float) );
|
|
if( unlikely(!isfinite(*out)) )
|
|
*out = 0.f;
|
|
out++;
|
|
in += sizeof(float);
|
|
}
|
|
}
|
|
|
|
static void F32IDecode( void *outp, const uint8_t *in, unsigned samples )
|
|
{
|
|
float *out = outp;
|
|
|
|
for( size_t i = 0; i < samples; i++ )
|
|
{
|
|
union { float f; uint32_t u; } s;
|
|
|
|
#ifdef WORDS_BIGENDIAN
|
|
s.u = GetDWLE( in );
|
|
#else
|
|
s.u = GetDWBE( in );
|
|
#endif
|
|
if( unlikely(!isfinite(s.f)) )
|
|
s.f = 0.f;
|
|
*(out++) = s.f;
|
|
in += 4;
|
|
}
|
|
}
|
|
|
|
static void F64NDecode( void *outp, const uint8_t *in, unsigned samples )
|
|
{
|
|
double *out = outp;
|
|
|
|
for( size_t i = 0; i < samples; i++ )
|
|
{
|
|
memcpy( out, in, sizeof(double) );
|
|
if( unlikely(!isfinite( *out )) )
|
|
*out = 0.;
|
|
out++;
|
|
in += sizeof(double);
|
|
}
|
|
}
|
|
|
|
static void F64IDecode( void *outp, const uint8_t *in, unsigned samples )
|
|
{
|
|
double *out = outp;
|
|
|
|
for( size_t i = 0; i < samples; i++ )
|
|
{
|
|
union { double d; uint64_t u; } s;
|
|
|
|
#ifdef WORDS_BIGENDIAN
|
|
s.u = GetQWLE( in );
|
|
#else
|
|
s.u = GetQWBE( in );
|
|
#endif
|
|
if( unlikely(!isfinite( s.d )) )
|
|
s.d = 0.;
|
|
*(out++) = s.d;
|
|
in += 8;
|
|
}
|
|
}
|
|
|
|
static int16_t dat12tos16( uint_fast16_t y )
|
|
{
|
|
static const uint16_t diff[16] = {
|
|
0x0000, 0x0000, 0x0100, 0x0200, 0x0300, 0x0400, 0x0500, 0x0600,
|
|
0x0A00, 0x0B00, 0x0C00, 0x0D00, 0x0E00, 0x0F00, 0x1000, 0x1000 };
|
|
static const uint8_t shift[16] = {
|
|
0, 0, 1, 2, 3, 4, 5, 6, 6, 5, 4, 3, 2, 1, 0, 0 };
|
|
|
|
assert(y < 0x1000);
|
|
|
|
int d = y >> 8;
|
|
return (y - diff[d]) << shift[d];
|
|
}
|
|
|
|
static void DAT12Decode( void *outp, const uint8_t *in, unsigned samples )
|
|
{
|
|
int32_t *out = outp;
|
|
|
|
while( samples >= 2 )
|
|
{
|
|
*(out++) = dat12tos16(U16_AT(in) >> 4);
|
|
*(out++) = dat12tos16(U16_AT(in + 1) & ~0xF000);
|
|
in += 3;
|
|
samples -= 2;
|
|
}
|
|
|
|
if( samples )
|
|
*(out++) = dat12tos16(U16_AT(in) >> 4);
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* DecoderClose: decoder destruction
|
|
*****************************************************************************/
|
|
static void DecoderClose( vlc_object_t *p_this )
|
|
{
|
|
decoder_t *p_dec = (decoder_t *)p_this;
|
|
|
|
free( p_dec->p_sys );
|
|
}
|
|
|
|
#ifdef ENABLE_SOUT
|
|
/* NOTE: Output buffers are always aligned since they are allocated by the araw plugin.
|
|
* Contrary to the decoder, the encoder can also assume that input buffers are aligned,
|
|
* since decoded audio blocks must always be aligned. */
|
|
|
|
static void U16IEncode( void *outp, const uint8_t *inp, unsigned samples )
|
|
{
|
|
const uint16_t *in = (const uint16_t *)inp;
|
|
uint16_t *out = outp;
|
|
|
|
for( size_t i = 0; i < samples; i++ )
|
|
*(out++) = bswap16( *(in++) + 0x8000 );
|
|
}
|
|
|
|
static void U16NEncode( void *outp, const uint8_t *inp, unsigned samples )
|
|
{
|
|
const uint16_t *in = (const uint16_t *)inp;
|
|
uint16_t *out = outp;
|
|
|
|
for( size_t i = 0; i < samples; i++ )
|
|
*(out++) = *(in++) + 0x8000;
|
|
}
|
|
|
|
static void U24BEncode( void *outp, const uint8_t *inp, unsigned samples )
|
|
{
|
|
const uint32_t *in = (const uint32_t *)inp;
|
|
uint8_t *out = outp;
|
|
|
|
for( size_t i = 0; i < samples; i++ )
|
|
{
|
|
uint32_t s = *(in++);
|
|
*(out++) = (s >> 24) + 0x80;
|
|
*(out++) = (s >> 16);
|
|
*(out++) = (s >> 8);
|
|
}
|
|
}
|
|
|
|
static void U24LEncode( void *outp, const uint8_t *inp, unsigned samples )
|
|
{
|
|
const uint32_t *in = (const uint32_t *)inp;
|
|
uint8_t *out = outp;
|
|
|
|
for( size_t i = 0; i < samples; i++ )
|
|
{
|
|
uint32_t s = *(in++);
|
|
*(out++) = (s >> 8);
|
|
*(out++) = (s >> 16);
|
|
*(out++) = (s >> 24) + 0x80;
|
|
}
|
|
}
|
|
|
|
static void S24BEncode( void *outp, const uint8_t *inp, unsigned samples )
|
|
{
|
|
const uint32_t *in = (const uint32_t *)inp;
|
|
uint8_t *out = outp;
|
|
|
|
for( size_t i = 0; i < samples; i++ )
|
|
{
|
|
uint32_t s = *(in++);
|
|
*(out++) = (s >> 24);
|
|
*(out++) = (s >> 16);
|
|
*(out++) = (s >> 8);
|
|
}
|
|
}
|
|
|
|
static void S24LEncode( void *outp, const uint8_t *inp, unsigned samples )
|
|
{
|
|
const uint32_t *in = (const uint32_t *)inp;
|
|
uint8_t *out = outp;
|
|
|
|
for( size_t i = 0; i < samples; i++ )
|
|
{
|
|
uint32_t s = *(in++);
|
|
*(out++) = (s >> 8);
|
|
*(out++) = (s >> 16);
|
|
*(out++) = (s >> 24);
|
|
}
|
|
}
|
|
|
|
static void U32IEncode( void *outp, const uint8_t *inp, unsigned samples )
|
|
{
|
|
const uint32_t *in = (const uint32_t *)inp;
|
|
uint32_t *out = outp;
|
|
|
|
for( size_t i = 0; i < samples; i++ )
|
|
*(out++) = bswap32( *(in++) + 0x80000000 );
|
|
}
|
|
|
|
static void U32NEncode( void *outp, const uint8_t *inp, unsigned samples )
|
|
{
|
|
const uint32_t *in = (const uint32_t *)inp;
|
|
uint32_t *out = outp;
|
|
|
|
for( size_t i = 0; i < samples; i++ )
|
|
*(out++) = *(in++) + 0x80000000;
|
|
}
|
|
|
|
static void S32IEncode( void *outp, const uint8_t *inp, unsigned samples )
|
|
{
|
|
const int32_t *in = (const int32_t *)inp;
|
|
int32_t *out = outp;
|
|
|
|
for( size_t i = 0; i < samples; i++ )
|
|
*(out++) = bswap32( *(in++) );
|
|
}
|
|
|
|
static void F32IEncode( void *outp, const uint8_t *inp, unsigned samples )
|
|
{
|
|
const float *in = (const float *)inp;
|
|
uint8_t *out = outp;
|
|
|
|
for( size_t i = 0; i < samples; i++ )
|
|
{
|
|
union { float f; uint32_t u; char b[4]; } s;
|
|
|
|
s.f = *(in++);
|
|
s.u = bswap32( s.u );
|
|
memcpy( out, s.b, 4 );
|
|
out += 4;
|
|
}
|
|
}
|
|
|
|
static void F64IEncode( void *outp, const uint8_t *inp, unsigned samples )
|
|
{
|
|
const double *in = (const double *)inp;
|
|
uint8_t *out = outp;
|
|
|
|
for( size_t i = 0; i < samples; i++ )
|
|
{
|
|
union { double d; uint64_t u; char b[8]; } s;
|
|
|
|
s.d = *(in++);
|
|
s.u = bswap64( s.u );
|
|
memcpy( out, s.b, 8 );
|
|
out += 8;
|
|
}
|
|
}
|
|
|
|
static block_t *Encode( encoder_t *enc, block_t *in )
|
|
{
|
|
if( in == NULL )
|
|
return NULL;
|
|
|
|
block_t *out = block_Alloc( in->i_nb_samples
|
|
* enc->fmt_out.audio.i_bytes_per_frame );
|
|
if( unlikely(out == NULL) )
|
|
return NULL;
|
|
|
|
out->i_flags = in->i_flags;
|
|
out->i_nb_samples = in->i_nb_samples;
|
|
out->i_dts = in->i_dts;
|
|
out->i_pts = in->i_pts;
|
|
out->i_length = in->i_length;
|
|
|
|
void (*encode)(void *, const uint8_t *, unsigned) = (void *)enc->p_sys;
|
|
if( encode != NULL )
|
|
encode( out->p_buffer, in->p_buffer, in->i_nb_samples
|
|
* enc->fmt_out.audio.i_channels );
|
|
else {
|
|
assert( out->i_buffer >= in->i_buffer );
|
|
memcpy( out->p_buffer, in->p_buffer, in->i_buffer );
|
|
}
|
|
return out;
|
|
}
|
|
|
|
/**
|
|
* Probes the PCM audio encoder.
|
|
*/
|
|
static int EncoderOpen( vlc_object_t *p_this )
|
|
{
|
|
encoder_t *p_enc = (encoder_t *)p_this;
|
|
void (*encode)(void *, const uint8_t *, unsigned) = NULL;
|
|
|
|
switch( p_enc->fmt_out.i_codec )
|
|
{
|
|
case VLC_CODEC_S8:
|
|
encode = S8Decode;
|
|
case VLC_CODEC_U8:
|
|
p_enc->fmt_in.i_codec = VLC_CODEC_U8;
|
|
p_enc->fmt_out.audio.i_bitspersample = 8;
|
|
break;
|
|
case VLC_CODEC_U16I:
|
|
encode = U16IEncode;
|
|
p_enc->fmt_in.i_codec = VLC_CODEC_S16N;
|
|
p_enc->fmt_out.audio.i_bitspersample = 16;
|
|
break;
|
|
case VLC_CODEC_U16N:
|
|
encode = U16NEncode;
|
|
p_enc->fmt_in.i_codec = VLC_CODEC_S16N;
|
|
p_enc->fmt_out.audio.i_bitspersample = 16;
|
|
break;
|
|
case VLC_CODEC_S16I:
|
|
encode = S16IDecode;
|
|
case VLC_CODEC_S16N:
|
|
p_enc->fmt_in.i_codec = VLC_CODEC_S16N;
|
|
p_enc->fmt_out.audio.i_bitspersample = 16;
|
|
break;
|
|
case VLC_CODEC_U24B:
|
|
encode = U24BEncode;
|
|
p_enc->fmt_in.i_codec = VLC_CODEC_S32N;
|
|
p_enc->fmt_out.audio.i_bitspersample = 24;
|
|
break;
|
|
case VLC_CODEC_U24L:
|
|
encode = U24LEncode;
|
|
p_enc->fmt_in.i_codec = VLC_CODEC_S32N;
|
|
p_enc->fmt_out.audio.i_bitspersample = 24;
|
|
break;
|
|
case VLC_CODEC_S24B:
|
|
encode = S24BEncode;
|
|
p_enc->fmt_in.i_codec = VLC_CODEC_S32N;
|
|
p_enc->fmt_out.audio.i_bitspersample = 24;
|
|
break;
|
|
case VLC_CODEC_S24L:
|
|
encode = S24LEncode;
|
|
p_enc->fmt_in.i_codec = VLC_CODEC_S32N;
|
|
p_enc->fmt_out.audio.i_bitspersample = 24;
|
|
break;
|
|
case VLC_CODEC_U32I:
|
|
encode = U32IEncode;
|
|
p_enc->fmt_in.i_codec = VLC_CODEC_S32N;
|
|
p_enc->fmt_out.audio.i_bitspersample = 32;
|
|
break;
|
|
case VLC_CODEC_U32N:
|
|
encode = U32NEncode;
|
|
p_enc->fmt_in.i_codec = VLC_CODEC_S32N;
|
|
p_enc->fmt_out.audio.i_bitspersample = 32;
|
|
break;
|
|
case VLC_CODEC_S32I:
|
|
encode = S32IEncode;
|
|
case VLC_CODEC_S32N:
|
|
p_enc->fmt_in.i_codec = VLC_CODEC_S32N;
|
|
p_enc->fmt_out.audio.i_bitspersample = 32;
|
|
break;
|
|
#ifdef WORDS_BIGENDIAN
|
|
case VLC_CODEC_F32L:
|
|
#else
|
|
case VLC_CODEC_F32B:
|
|
#endif
|
|
encode = F32IEncode;
|
|
case VLC_CODEC_FL32:
|
|
p_enc->fmt_in.i_codec = VLC_CODEC_FL32;
|
|
p_enc->fmt_out.audio.i_bitspersample = 32;
|
|
break;
|
|
#ifdef WORDS_BIGENDIAN
|
|
case VLC_CODEC_F64L:
|
|
#else
|
|
case VLC_CODEC_F64B:
|
|
#endif
|
|
encode = F64IEncode;
|
|
case VLC_CODEC_FL64:
|
|
p_enc->fmt_in.i_codec = VLC_CODEC_FL64;
|
|
p_enc->fmt_out.audio.i_bitspersample = 64;
|
|
break;
|
|
default:
|
|
return VLC_EGENERIC;
|
|
}
|
|
|
|
p_enc->p_sys = (void *)encode;
|
|
p_enc->pf_encode_audio = Encode;
|
|
p_enc->fmt_out.audio.i_bytes_per_frame =
|
|
(p_enc->fmt_out.audio.i_bitspersample / 8) *
|
|
p_enc->fmt_in.audio.i_channels;
|
|
p_enc->fmt_out.i_bitrate =
|
|
p_enc->fmt_in.audio.i_channels *
|
|
p_enc->fmt_in.audio.i_rate *
|
|
p_enc->fmt_out.audio.i_bitspersample;
|
|
|
|
msg_Dbg( p_enc, "samplerate:%dHz channels:%d bits/sample:%d",
|
|
p_enc->fmt_out.audio.i_rate, p_enc->fmt_out.audio.i_channels,
|
|
p_enc->fmt_out.audio.i_bitspersample );
|
|
|
|
return VLC_SUCCESS;
|
|
}
|
|
#endif /* ENABLE_SOUT */
|
|
|