mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-09-22 14:26:52 +00:00
80d156d7fd
* qatar/master: qdm2: Use floating point synthesis filter. h264: correct border check. h264: fix loopfilter with threading at slice boundaries. Fix ff_mpa_synth_filter_fixed() prototype Rename costablegen.c ---> cos_tablegen.c. Collapse tableprint.c into tableprint.h. Simplify trig table rules Remove potentially unstable filenames from comments in generated files. Ignore generated tables and generated table generator programs. Simplify CLEANFILES make variable by using wildcards. Remove silly insults from avformat_version() Doxygen documentation. mpegaudiodsp: fix x86 and ppc makefiles configure: Adjust AVX assembler check. mpegaudio: remove unused version of SAME_HEADER_MASK mpegaudio: remove useless #undef at end of file asfdec: add missing #include for av_bswap32() mpegaudio: merge two #if CONFIG_FLOAT blocks mpegaudio: move some struct definitions from mpegaudio.h Move some mpegaudio functions to new mpegaudiodsp subsystem Conflicts: libavcodec/h264.c libavcodec/x86/Makefile Merged-by: Michael Niedermayer <michaelni@gmx.at>
143 lines
3.4 KiB
C
143 lines
3.4 KiB
C
/*
|
|
* Float MPEG Audio decoder
|
|
* Copyright (c) 2010 Michael Niedermayer
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
#define CONFIG_FLOAT 1
|
|
#include "mpegaudiodec.c"
|
|
|
|
static void compute_antialias_float(MPADecodeContext *s,
|
|
GranuleDef *g)
|
|
{
|
|
float *ptr;
|
|
int n, i;
|
|
|
|
/* we antialias only "long" bands */
|
|
if (g->block_type == 2) {
|
|
if (!g->switch_point)
|
|
return;
|
|
/* XXX: check this for 8000Hz case */
|
|
n = 1;
|
|
} else {
|
|
n = SBLIMIT - 1;
|
|
}
|
|
|
|
ptr = g->sb_hybrid + 18;
|
|
for(i = n;i > 0;i--) {
|
|
float tmp0, tmp1;
|
|
float *csa = &csa_table_float[0][0];
|
|
#define FLOAT_AA(j)\
|
|
tmp0= ptr[-1-j];\
|
|
tmp1= ptr[ j];\
|
|
ptr[-1-j] = tmp0 * csa[0+4*j] - tmp1 * csa[1+4*j];\
|
|
ptr[ j] = tmp0 * csa[1+4*j] + tmp1 * csa[0+4*j];
|
|
|
|
FLOAT_AA(0)
|
|
FLOAT_AA(1)
|
|
FLOAT_AA(2)
|
|
FLOAT_AA(3)
|
|
FLOAT_AA(4)
|
|
FLOAT_AA(5)
|
|
FLOAT_AA(6)
|
|
FLOAT_AA(7)
|
|
|
|
ptr += 18;
|
|
}
|
|
}
|
|
|
|
#if CONFIG_MP1FLOAT_DECODER
|
|
AVCodec ff_mp1float_decoder =
|
|
{
|
|
"mp1float",
|
|
AVMEDIA_TYPE_AUDIO,
|
|
CODEC_ID_MP1,
|
|
sizeof(MPADecodeContext),
|
|
decode_init,
|
|
NULL,
|
|
.close = NULL,
|
|
decode_frame,
|
|
CODEC_CAP_PARSE_ONLY,
|
|
.flush= flush,
|
|
.long_name= NULL_IF_CONFIG_SMALL("MP1 (MPEG audio layer 1)"),
|
|
};
|
|
#endif
|
|
#if CONFIG_MP2FLOAT_DECODER
|
|
AVCodec ff_mp2float_decoder =
|
|
{
|
|
"mp2float",
|
|
AVMEDIA_TYPE_AUDIO,
|
|
CODEC_ID_MP2,
|
|
sizeof(MPADecodeContext),
|
|
decode_init,
|
|
NULL,
|
|
.close = NULL,
|
|
decode_frame,
|
|
CODEC_CAP_PARSE_ONLY,
|
|
.flush= flush,
|
|
.long_name= NULL_IF_CONFIG_SMALL("MP2 (MPEG audio layer 2)"),
|
|
};
|
|
#endif
|
|
#if CONFIG_MP3FLOAT_DECODER
|
|
AVCodec ff_mp3float_decoder =
|
|
{
|
|
"mp3float",
|
|
AVMEDIA_TYPE_AUDIO,
|
|
CODEC_ID_MP3,
|
|
sizeof(MPADecodeContext),
|
|
decode_init,
|
|
NULL,
|
|
.close = NULL,
|
|
decode_frame,
|
|
CODEC_CAP_PARSE_ONLY,
|
|
.flush= flush,
|
|
.long_name= NULL_IF_CONFIG_SMALL("MP3 (MPEG audio layer 3)"),
|
|
};
|
|
#endif
|
|
#if CONFIG_MP3ADUFLOAT_DECODER
|
|
AVCodec ff_mp3adufloat_decoder =
|
|
{
|
|
"mp3adufloat",
|
|
AVMEDIA_TYPE_AUDIO,
|
|
CODEC_ID_MP3ADU,
|
|
sizeof(MPADecodeContext),
|
|
decode_init,
|
|
NULL,
|
|
.close = NULL,
|
|
decode_frame_adu,
|
|
CODEC_CAP_PARSE_ONLY,
|
|
.flush= flush,
|
|
.long_name= NULL_IF_CONFIG_SMALL("ADU (Application Data Unit) MP3 (MPEG audio layer 3)"),
|
|
};
|
|
#endif
|
|
#if CONFIG_MP3ON4FLOAT_DECODER
|
|
AVCodec ff_mp3on4float_decoder =
|
|
{
|
|
"mp3on4float",
|
|
AVMEDIA_TYPE_AUDIO,
|
|
CODEC_ID_MP3ON4,
|
|
sizeof(MP3On4DecodeContext),
|
|
decode_init_mp3on4,
|
|
NULL,
|
|
decode_close_mp3on4,
|
|
decode_frame_mp3on4,
|
|
.flush= flush,
|
|
.long_name= NULL_IF_CONFIG_SMALL("MP3onMP4"),
|
|
};
|
|
#endif
|