/*
  * Fixed-point MPEG audio decoder
  *

  * This file is part of FFmpeg.

  *

  * FFmpeg 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.
  *

  * FFmpeg 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 "config.h"
 #include "libavutil/samplefmt.h"
 

 #define USE_FLOATS 0

 
 #include "mpegaudio.h"
 
 #define SHR(a,b)       ((a)>>(b))
 /* WARNING: only correct for positive numbers */
 #define FIXR_OLD(a)    ((int)((a) * FRAC_ONE + 0.5))
 #define FIXR(a)        ((int)((a) * FRAC_ONE + 0.5))
 #define FIXHR(a)       ((int)((a) * (1LL<<32) + 0.5))
 #define MULH3(x, y, s) MULH((s)*(x), y)
 #define MULLx(x, y, s) MULL(x,y,s)
 #define RENAME(a)      a ## _fixed
 #define OUT_FMT   AV_SAMPLE_FMT_S16
 #define OUT_FMT_P AV_SAMPLE_FMT_S16P
 
 #include "mpegaudiodec_template.c"
 
 #if CONFIG_MP1_DECODER
 AVCodec ff_mp1_decoder = {
     .name           = "mp1",
     .long_name      = NULL_IF_CONFIG_SMALL("MP1 (MPEG audio layer 1)"),
     .type           = AVMEDIA_TYPE_AUDIO,
     .id             = AV_CODEC_ID_MP1,
     .priv_data_size = sizeof(MPADecodeContext),
     .init           = decode_init,
     .decode         = decode_frame,
     .capabilities   = CODEC_CAP_DR1,
     .flush          = flush,
     .sample_fmts    = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_S16P,
                                                       AV_SAMPLE_FMT_S16,
                                                       AV_SAMPLE_FMT_NONE },
 };
 #endif
 #if CONFIG_MP2_DECODER
 AVCodec ff_mp2_decoder = {
     .name           = "mp2",
     .long_name      = NULL_IF_CONFIG_SMALL("MP2 (MPEG audio layer 2)"),
     .type           = AVMEDIA_TYPE_AUDIO,
     .id             = AV_CODEC_ID_MP2,
     .priv_data_size = sizeof(MPADecodeContext),
     .init           = decode_init,
     .decode         = decode_frame,
     .capabilities   = CODEC_CAP_DR1,
     .flush          = flush,
     .sample_fmts    = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_S16P,
                                                       AV_SAMPLE_FMT_S16,
                                                       AV_SAMPLE_FMT_NONE },
 };
 #endif
 #if CONFIG_MP3_DECODER
 AVCodec ff_mp3_decoder = {
     .name           = "mp3",
     .long_name      = NULL_IF_CONFIG_SMALL("MP3 (MPEG audio layer 3)"),
     .type           = AVMEDIA_TYPE_AUDIO,
     .id             = AV_CODEC_ID_MP3,
     .priv_data_size = sizeof(MPADecodeContext),
     .init           = decode_init,
     .decode         = decode_frame,
     .capabilities   = CODEC_CAP_DR1,
     .flush          = flush,
     .sample_fmts    = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_S16P,
                                                       AV_SAMPLE_FMT_S16,
                                                       AV_SAMPLE_FMT_NONE },
 };
 #endif
 #if CONFIG_MP3ADU_DECODER
 AVCodec ff_mp3adu_decoder = {
     .name           = "mp3adu",
     .long_name      = NULL_IF_CONFIG_SMALL("ADU (Application Data Unit) MP3 (MPEG audio layer 3)"),
     .type           = AVMEDIA_TYPE_AUDIO,
     .id             = AV_CODEC_ID_MP3ADU,
     .priv_data_size = sizeof(MPADecodeContext),
     .init           = decode_init,
     .decode         = decode_frame_adu,
     .capabilities   = CODEC_CAP_DR1,
     .flush          = flush,
     .sample_fmts    = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_S16P,
                                                       AV_SAMPLE_FMT_S16,
                                                       AV_SAMPLE_FMT_NONE },
 };
 #endif
 #if CONFIG_MP3ON4_DECODER
 AVCodec ff_mp3on4_decoder = {
     .name           = "mp3on4",
     .long_name      = NULL_IF_CONFIG_SMALL("MP3onMP4"),
     .type           = AVMEDIA_TYPE_AUDIO,
     .id             = AV_CODEC_ID_MP3ON4,
     .priv_data_size = sizeof(MP3On4DecodeContext),
     .init           = decode_init_mp3on4,
     .close          = decode_close_mp3on4,
     .decode         = decode_frame_mp3on4,
     .capabilities   = CODEC_CAP_DR1,
     .flush          = flush_mp3on4,
     .sample_fmts    = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_S16P,
                                                       AV_SAMPLE_FMT_NONE },
 };
 #endif