mirror of https://git.ffmpeg.org/ffmpeg.git
123 lines
3.1 KiB
C
123 lines
3.1 KiB
C
/*
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* Float MPEG Audio decoder
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* Copyright (c) 2010 Michael Niedermayer
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg 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 GNU
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* 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
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#define CONFIG_FLOAT 1
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#include "mpegaudiodec.c"
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void ff_mpa_synth_filter_float(MPADecodeContext *s, float *synth_buf_ptr,
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int *synth_buf_offset,
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float *window, int *dither_state,
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float *samples, int incr,
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float sb_samples[SBLIMIT])
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{
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float *synth_buf;
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int offset;
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offset = *synth_buf_offset;
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synth_buf = synth_buf_ptr + offset;
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dct32(synth_buf, sb_samples);
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s->apply_window_mp3(synth_buf, window, dither_state, samples, incr);
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offset = (offset - 32) & 511;
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*synth_buf_offset = offset;
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}
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#if CONFIG_MP1FLOAT_DECODER
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AVCodec mp1float_decoder =
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{
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"mp1float",
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AVMEDIA_TYPE_AUDIO,
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CODEC_ID_MP1,
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sizeof(MPADecodeContext),
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decode_init,
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NULL,
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NULL,
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decode_frame,
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CODEC_CAP_PARSE_ONLY,
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.flush= flush,
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.long_name= NULL_IF_CONFIG_SMALL("MP1 (MPEG audio layer 1)"),
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};
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#endif
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#if CONFIG_MP2FLOAT_DECODER
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AVCodec mp2float_decoder =
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{
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"mp2float",
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AVMEDIA_TYPE_AUDIO,
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CODEC_ID_MP2,
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sizeof(MPADecodeContext),
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decode_init,
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NULL,
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NULL,
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decode_frame,
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CODEC_CAP_PARSE_ONLY,
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.flush= flush,
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.long_name= NULL_IF_CONFIG_SMALL("MP2 (MPEG audio layer 2)"),
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};
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#endif
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#if CONFIG_MP3FLOAT_DECODER
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AVCodec mp3float_decoder =
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{
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"mp3float",
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AVMEDIA_TYPE_AUDIO,
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CODEC_ID_MP3,
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sizeof(MPADecodeContext),
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decode_init,
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NULL,
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NULL,
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decode_frame,
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CODEC_CAP_PARSE_ONLY,
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.flush= flush,
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.long_name= NULL_IF_CONFIG_SMALL("MP3 (MPEG audio layer 3)"),
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};
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#endif
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#if CONFIG_MP3ADUFLOAT_DECODER
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AVCodec mp3adufloat_decoder =
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{
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"mp3adufloat",
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AVMEDIA_TYPE_AUDIO,
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CODEC_ID_MP3ADU,
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sizeof(MPADecodeContext),
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decode_init,
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NULL,
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NULL,
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decode_frame_adu,
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CODEC_CAP_PARSE_ONLY,
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.flush= flush,
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.long_name= NULL_IF_CONFIG_SMALL("ADU (Application Data Unit) MP3 (MPEG audio layer 3)"),
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};
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#endif
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#if CONFIG_MP3ON4FLOAT_DECODER
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AVCodec mp3on4float_decoder =
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{
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"mp3on4float",
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AVMEDIA_TYPE_AUDIO,
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CODEC_ID_MP3ON4,
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sizeof(MP3On4DecodeContext),
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decode_init_mp3on4,
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NULL,
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decode_close_mp3on4,
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decode_frame_mp3on4,
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.flush= flush,
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.long_name= NULL_IF_CONFIG_SMALL("MP3onMP4"),
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};
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#endif
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