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98 lines
2.8 KiB
98 lines
2.8 KiB
/*****************************************************************************
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* spdif.c: S/PDIF pass-though decoder
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*****************************************************************************
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* Copyright (C) 2016 VLC authors and VideoLAN
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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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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <vlc_common.h>
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#include <vlc_plugin.h>
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#include <vlc_aout.h>
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#include <vlc_codec.h>
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#include <vlc_modules.h>
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static int OpenDecoder(vlc_object_t *);
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vlc_module_begin()
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set_category(CAT_INPUT)
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set_subcategory(SUBCAT_INPUT_ACODEC)
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set_description(N_("S/PDIF pass-through decoder"))
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set_capability("decoder", 120)
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set_callbacks(OpenDecoder, NULL)
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vlc_module_end()
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static block_t *
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DecodeBlock(decoder_t *p_dec, block_t **pp_block)
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{
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(void) p_dec;
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if (pp_block != NULL)
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{
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block_t *p_block = *pp_block;
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*pp_block = NULL;
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return p_block;
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}
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else
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return NULL;
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}
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static int
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OpenDecoder(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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switch (p_dec->fmt_in.i_codec)
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{
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case VLC_CODEC_MPGA:
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case VLC_CODEC_MP3:
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/* Disabled by default */
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if (!p_dec->obj.force)
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return VLC_EGENERIC;
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break;
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case VLC_CODEC_A52:
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case VLC_CODEC_EAC3:
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case VLC_CODEC_MLP:
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case VLC_CODEC_TRUEHD:
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case VLC_CODEC_DTS:
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case VLC_CODEC_SPDIFL:
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case VLC_CODEC_SPDIFB:
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/* Enabled by default */
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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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/* 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 = p_dec->fmt_in.i_codec;
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p_dec->fmt_out.audio = p_dec->fmt_in.audio;
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p_dec->fmt_out.audio.i_format = p_dec->fmt_out.i_codec;
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if (p_dec->fmt_out.audio.i_channels == 0
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|| decoder_UpdateAudioFormat(p_dec))
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{
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es_format_Init(&p_dec->fmt_out, UNKNOWN_ES, 0);
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return VLC_EGENERIC;
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}
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p_dec->pf_decode_audio = DecodeBlock;
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p_dec->pf_flush = NULL;
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return VLC_SUCCESS;
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}
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