mirror of https://git.ffmpeg.org/ffmpeg.git
121 lines
4.6 KiB
C
121 lines
4.6 KiB
C
/*
|
|
* Float MPEG Audio decoder
|
|
* Copyright (c) 2010 Michael Niedermayer
|
|
*
|
|
* This file is part of Libav.
|
|
*
|
|
* Libav 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.
|
|
*
|
|
* Libav 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 Libav; 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 CONFIG_FLOAT 1
|
|
|
|
#include "mpegaudio.h"
|
|
|
|
#define SHR(a,b) ((a)*(1.0f/(1<<(b))))
|
|
#define FIXR_OLD(a) ((int)((a) * FRAC_ONE + 0.5))
|
|
#define FIXR(x) ((float)(x))
|
|
#define FIXHR(x) ((float)(x))
|
|
#define MULH3(x, y, s) ((s)*(y)*(x))
|
|
#define MULLx(x, y, s) ((y)*(x))
|
|
#define RENAME(a) a ## _float
|
|
#define OUT_FMT AV_SAMPLE_FMT_FLT
|
|
#define OUT_FMT_P AV_SAMPLE_FMT_FLTP
|
|
|
|
#include "mpegaudiodec_template.c"
|
|
|
|
#if CONFIG_MP1FLOAT_DECODER
|
|
AVCodec ff_mp1float_decoder = {
|
|
.name = "mp1float",
|
|
.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_FLTP,
|
|
AV_SAMPLE_FMT_FLT,
|
|
AV_SAMPLE_FMT_NONE },
|
|
};
|
|
#endif
|
|
#if CONFIG_MP2FLOAT_DECODER
|
|
AVCodec ff_mp2float_decoder = {
|
|
.name = "mp2float",
|
|
.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_FLTP,
|
|
AV_SAMPLE_FMT_FLT,
|
|
AV_SAMPLE_FMT_NONE },
|
|
};
|
|
#endif
|
|
#if CONFIG_MP3FLOAT_DECODER
|
|
AVCodec ff_mp3float_decoder = {
|
|
.name = "mp3float",
|
|
.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_FLTP,
|
|
AV_SAMPLE_FMT_FLT,
|
|
AV_SAMPLE_FMT_NONE },
|
|
};
|
|
#endif
|
|
#if CONFIG_MP3ADUFLOAT_DECODER
|
|
AVCodec ff_mp3adufloat_decoder = {
|
|
.name = "mp3adufloat",
|
|
.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_FLTP,
|
|
AV_SAMPLE_FMT_FLT,
|
|
AV_SAMPLE_FMT_NONE },
|
|
};
|
|
#endif
|
|
#if CONFIG_MP3ON4FLOAT_DECODER
|
|
AVCodec ff_mp3on4float_decoder = {
|
|
.name = "mp3on4float",
|
|
.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_FLTP,
|
|
AV_SAMPLE_FMT_NONE },
|
|
};
|
|
#endif
|