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avcodec/mpegaudiodata: Unavpriv mpa_bitrate and mpa_frequency tabs

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These arrays have a size of 180 resp. six bytes. This does not
make it worthwhile to export them due to the overhead this occurs;
for x64 Elf/Linux/GNU: 2x2B version, 2x24B .dynsym, 24B .rela.dyn,
8B .got, 4B hash + twice the size of the name (here 20+23B).
Therefore these symbols are unavprived and duplicated for shared
builds.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2021-03-09 12:15:35 +01:00
parent 49bf94536f
commit 33e6d57f01
13 changed files with 114 additions and 39 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
libavcodec/Makefile
View File

@ -123,7 +123,7 @@ OBJS-$(CONFIG_MPEGAUDIODSP) += mpegaudiodsp.o \
mpegaudiodsp_data.o \
mpegaudiodsp_fixed.o \
mpegaudiodsp_float.o
OBJS-$(CONFIG_MPEGAUDIOHEADER) += mpegaudiodecheader.o mpegaudiodata.o
OBJS-$(CONFIG_MPEGAUDIOHEADER) += mpegaudiodecheader.o mpegaudiotabs.o
OBJS-$(CONFIG_MPEG4AUDIO) += mpeg4audio.o mpeg4audio_sample_rates.o
OBJS-$(CONFIG_MPEGVIDEO) += mpegvideo.o mpegvideodsp.o rl.o \
mpegvideo_motion.o mpegutils.o \
@ -474,9 +474,11 @@ OBJS-$(CONFIG_MP1_DECODER) += mpegaudiodec_fixed.o
OBJS-$(CONFIG_MP1FLOAT_DECODER) += mpegaudiodec_float.o
OBJS-$(CONFIG_MP2_DECODER) += mpegaudiodec_fixed.o
OBJS-$(CONFIG_MP2_ENCODER) += mpegaudioenc_float.o mpegaudio.o \
mpegaudiodata.o mpegaudiodsp_data.o
mpegaudiodata.o mpegaudiodsp_data.o \
mpegaudiotabs.o
OBJS-$(CONFIG_MP2FIXED_ENCODER) += mpegaudioenc_fixed.o mpegaudio.o \
mpegaudiodata.o mpegaudiodsp_data.o
mpegaudiodata.o mpegaudiodsp_data.o \
mpegaudiotabs.o
OBJS-$(CONFIG_MP2FLOAT_DECODER) += mpegaudiodec_float.o
OBJS-$(CONFIG_MP3_DECODER) += mpegaudiodec_fixed.o
OBJS-$(CONFIG_MP3_MF_ENCODER) += mfenc.o mf_utils.o
@ -990,18 +992,18 @@ OBJS-$(CONFIG_VP8_QSV_HWACCEL) += qsvdec.o
SHLIBOBJS += log2_tab.o reverse.o
# General libavformat dependencies
OBJS-$(CONFIG_ISO_MEDIA) += mpegaudiodata.o
OBJS-$(CONFIG_FITS_DEMUXER) += fits.o
OBJS-$(CONFIG_NUT_MUXER) += mpegaudiodata.o
OBJS-$(CONFIG_TAK_DEMUXER) += tak.o
# libavformat dependencies for static builds
STLIBOBJS-$(CONFIG_ISO_MEDIA) += mpegaudiotabs.o
STLIBOBJS-$(CONFIG_FLV_MUXER) += mpeg4audio_sample_rates.o
STLIBOBJS-$(CONFIG_HLS_DEMUXER) += ac3_channel_layout_tab.o
STLIBOBJS-$(CONFIG_MATROSKA_DEMUXER) += mpeg4audio_sample_rates.o
STLIBOBJS-$(CONFIG_MOV_DEMUXER) += ac3_channel_layout_tab.o
STLIBOBJS-$(CONFIG_MXF_MUXER) += golomb.o
STLIBOBJS-$(CONFIG_MP3_MUXER) += mpegaudiotabs.o
STLIBOBJS-$(CONFIG_NUT_MUXER) += mpegaudiotabs.o
STLIBOBJS-$(CONFIG_RTPDEC) += jpegtables.o
STLIBOBJS-$(CONFIG_RTP_MUXER) += golomb.o jpegtables.o \
mpeg4audio_sample_rates.o
@ -1171,7 +1173,7 @@ OBJS-$(CONFIG_MJPEGA_DUMP_HEADER_BSF) += mjpega_dump_header_bsf.o
OBJS-$(CONFIG_MPEG4_UNPACK_BFRAMES_BSF) += mpeg4_unpack_bframes_bsf.o
OBJS-$(CONFIG_MOV2TEXTSUB_BSF) += movsub_bsf.o
OBJS-$(CONFIG_MP3_HEADER_DECOMPRESS_BSF) += mp3_header_decompress_bsf.o \
mpegaudiodata.o
mpegaudiotabs.o
OBJS-$(CONFIG_MPEG2_METADATA_BSF) += mpeg2_metadata_bsf.o
OBJS-$(CONFIG_NOISE_BSF) += noise_bsf.o
OBJS-$(CONFIG_NULL_BSF) += null_bsf.o

5
libavcodec/mp3_header_decompress_bsf.c
View File

@ -22,6 +22,7 @@
#include "libavutil/intreadwrite.h"
#include "bsf.h"
#include "bsf_internal.h"
#include "defs.h"
#include "mpegaudiodecheader.h"
#include "mpegaudiodata.h"
@ -67,10 +68,10 @@ static int mp3_header_decompress(AVBSFContext *ctx, AVPacket *out)
goto fail;
}
sample_rate= avpriv_mpa_freq_tab[sample_rate_index] >> (lsf + mpeg25); //in case sample rate is a little off
sample_rate = ff_mpa_freq_tab[sample_rate_index] >> (lsf + mpeg25); //in case sample rate is a little off
for(bitrate_index=2; bitrate_index<30; bitrate_index++){
frame_size = avpriv_mpa_bitrate_tab[lsf][2][bitrate_index>>1];
frame_size = ff_mpa_bitrate_tab[lsf][2][bitrate_index>>1];
frame_size = (frame_size * 144000) / (sample_rate << lsf) + (bitrate_index&1);
if(frame_size == buf_size + 4)
break;

13
libavcodec/mpegaudiodata.c
View File

@ -26,19 +26,6 @@
#include "mpegaudiodata.h"
const uint16_t avpriv_mpa_bitrate_tab[2][3][15] = {
{ {0, 32, 64, 96, 128, 160, 192, 224, 256, 288, 320, 352, 384, 416, 448 },
{0, 32, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384 },
{0, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320 } },
{ {0, 32, 48, 56, 64, 80, 96, 112, 128, 144, 160, 176, 192, 224, 256},
{0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160},
{0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160}
}
};
const uint16_t avpriv_mpa_freq_tab[3] = { 44100, 48000, 32000 };
/*******************************************************/
/* layer 2 tables */

5
libavcodec/mpegaudiodata.h
View File

@ -31,14 +31,13 @@
#include "config.h"
#include "internal.h"
#include "vlc.h"
#define MODE_EXT_MS_STEREO 2
#define MODE_EXT_I_STEREO 1
extern av_export_avcodec const uint16_t avpriv_mpa_bitrate_tab[2][3][15];
extern av_export_avcodec const uint16_t avpriv_mpa_freq_tab[3];
extern const uint16_t ff_mpa_bitrate_tab[2][3][15];
extern const uint16_t ff_mpa_freq_tab[3];
extern const int ff_mpa_sblimit_table[5];
extern const int ff_mpa_quant_steps[17];
extern const int ff_mpa_quant_bits[17];

6
libavcodec/mpegaudiodecheader.c
View File

@ -52,9 +52,9 @@ int avpriv_mpegaudio_decode_header(MPADecodeHeader *s, uint32_t header)
s->layer = 4 - ((header >> 17) & 3);
/* extract frequency */
sample_rate_index = (header >> 10) & 3;
if (sample_rate_index >= FF_ARRAY_ELEMS(avpriv_mpa_freq_tab))
if (sample_rate_index >= FF_ARRAY_ELEMS(ff_mpa_freq_tab))
sample_rate_index = 0;
sample_rate = avpriv_mpa_freq_tab[sample_rate_index] >> (s->lsf + mpeg25);
sample_rate = ff_mpa_freq_tab[sample_rate_index] >> (s->lsf + mpeg25);
sample_rate_index += 3 * (s->lsf + mpeg25);
s->sample_rate_index = sample_rate_index;
s->error_protection = ((header >> 16) & 1) ^ 1;
@ -75,7 +75,7 @@ int avpriv_mpegaudio_decode_header(MPADecodeHeader *s, uint32_t header)
s->nb_channels = 2;
if (bitrate_index != 0) {
frame_size = avpriv_mpa_bitrate_tab[s->lsf][s->layer - 1][bitrate_index];
frame_size = ff_mpa_bitrate_tab[s->lsf][s->layer - 1][bitrate_index];
s->bit_rate = frame_size * 1000;
switch(s->layer) {
case 1:

8
libavcodec/mpegaudioenc_template.c
View File

@ -95,9 +95,9 @@ static av_cold int MPA_encode_init(AVCodecContext *avctx)
/* encoding freq */
s->lsf = 0;
for(i=0;i<3;i++) {
if (avpriv_mpa_freq_tab[i] == freq)
if (ff_mpa_freq_tab[i] == freq)
break;
if ((avpriv_mpa_freq_tab[i] / 2) == freq) {
if ((ff_mpa_freq_tab[i] / 2) == freq) {
s->lsf = 1;
break;
}
@ -110,12 +110,12 @@ static av_cold int MPA_encode_init(AVCodecContext *avctx)
/* encoding bitrate & frequency */
for(i=1;i<15;i++) {
if (avpriv_mpa_bitrate_tab[s->lsf][1][i] == bitrate)
if (ff_mpa_bitrate_tab[s->lsf][1][i] == bitrate)
break;
}
if (i == 15 && !avctx->bit_rate) {
i = 14;
bitrate = avpriv_mpa_bitrate_tab[s->lsf][1][i];
bitrate = ff_mpa_bitrate_tab[s->lsf][1][i];
avctx->bit_rate = bitrate * 1000;
}
if (i == 15){

22
libavcodec/mpegaudiotabs.c Normal file
View File

@ -0,0 +1,22 @@
/*
* MPEG Audio common tables
* copyright (c) 2002 Fabrice Bellard
*
* 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 "mpegaudiotabs.h"

39
libavcodec/mpegaudiotabs.h Normal file
View File

@ -0,0 +1,39 @@
/*
* MPEG Audio common tables
* copyright (c) 2002 Fabrice Bellard
*
* 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
*/
#ifndef AVCODEC_MPEGAUDIOTABS_H
#define AVCODEC_MPEGAUDIOTABS_H
#include <stdint.h>
const uint16_t ff_mpa_bitrate_tab[2][3][15] = {
{ { 0, 32, 64, 96, 128, 160, 192, 224, 256, 288, 320, 352, 384, 416, 448 },
{ 0, 32, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384 },
{ 0, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320 } },
{ { 0, 32, 48, 56, 64, 80, 96, 112, 128, 144, 160, 176, 192, 224, 256 },
{ 0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160 },
{ 0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160 }
}
};
const uint16_t ff_mpa_freq_tab[3] = { 44100, 48000, 32000 };
#endif

3
libavformat/Makefile
View File

@ -681,11 +681,14 @@ OBJS-$(CONFIG_LIBZMQ_PROTOCOL) += libzmq.o
# Objects duplicated from other libraries for shared builds
SHLIBOBJS += log2_tab.o
SHLIBOBJS-$(CONFIG_ISO_MEDIA) += mpegaudiotabs.o
SHLIBOBJS-$(CONFIG_FLV_MUXER) += mpeg4audio_sample_rates.o
SHLIBOBJS-$(CONFIG_HLS_DEMUXER) += ac3_channel_layout_tab.o
SHLIBOBJS-$(CONFIG_MATROSKA_DEMUXER) += mpeg4audio_sample_rates.o
SHLIBOBJS-$(CONFIG_MOV_DEMUXER) += ac3_channel_layout_tab.o
SHLIBOBJS-$(CONFIG_MP3_MUXER) += mpegaudiotabs.o
SHLIBOBJS-$(CONFIG_MXF_MUXER) += golomb_tab.o
SHLIBOBJS-$(CONFIG_NUT_MUXER) += mpegaudiotabs.o
SHLIBOBJS-$(CONFIG_RTPDEC) += jpegtables.o
SHLIBOBJS-$(CONFIG_RTP_MUXER) += golomb_tab.o jpegtables.o \
mpeg4audio_sample_rates.o

2
libavformat/isom.c
View File

@ -362,7 +362,7 @@ int ff_mp4_read_dec_config_descr(AVFormatContext *fc, AVStream *st, AVIOContext
return ret;
st->codecpar->channels = cfg.channels;
if (cfg.object_type == 29 && cfg.sampling_index < 3) // old mp3on4
st->codecpar->sample_rate = avpriv_mpa_freq_tab[cfg.sampling_index];
st->codecpar->sample_rate = ff_mpa_freq_tab[cfg.sampling_index];
else if (cfg.ext_sample_rate)
st->codecpar->sample_rate = cfg.ext_sample_rate;
else

8
libavformat/mp3enc.c
View File

@ -159,8 +159,8 @@ static int mp3_write_xing(AVFormatContext *s)
if (!(s->pb->seekable & AVIO_SEEKABLE_NORMAL) || !mp3->write_xing)
return 0;
for (i = 0; i < FF_ARRAY_ELEMS(avpriv_mpa_freq_tab); i++) {
const uint16_t base_freq = avpriv_mpa_freq_tab[i];
for (i = 0; i < FF_ARRAY_ELEMS(ff_mpa_freq_tab); i++) {
const uint16_t base_freq = ff_mpa_freq_tab[i];
if (par->sample_rate == base_freq) ver = 0x3; // MPEG 1
else if (par->sample_rate == base_freq / 2) ver = 0x2; // MPEG 2
@ -170,7 +170,7 @@ static int mp3_write_xing(AVFormatContext *s)
srate_idx = i;
break;
}
if (i == FF_ARRAY_ELEMS(avpriv_mpa_freq_tab)) {
if (i == FF_ARRAY_ELEMS(ff_mpa_freq_tab)) {
av_log(s, AV_LOG_WARNING, "Unsupported sample rate, not writing Xing header.\n");
return -1;
}
@ -190,7 +190,7 @@ static int mp3_write_xing(AVFormatContext *s)
header |= channels << 6;
for (bitrate_idx = 1; bitrate_idx < 15; bitrate_idx++) {
int bit_rate = 1000 * avpriv_mpa_bitrate_tab[ver != 3][3 - 1][bitrate_idx];
int bit_rate = 1000 * ff_mpa_bitrate_tab[ver != 3][3 - 1][bitrate_idx];
int error = FFABS(bit_rate - par->bit_rate);
if (error < best_bitrate_error) {

22
libavformat/mpegaudiotabs.c Normal file
View File

@ -0,0 +1,22 @@
/*
* MPEG Audio common tables
* copyright (c) 2002 Fabrice Bellard
*
* 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 "libavcodec/mpegaudiotabs.h"

4
libavformat/nutenc.c
View File

@ -70,11 +70,11 @@ static int find_expected_header(AVCodecParameters *p, int size, int key_frame,
else if (sample_rate < (44100 + 48000) / 2) sample_rate_index = 0;
else sample_rate_index = 1;
sample_rate = avpriv_mpa_freq_tab[sample_rate_index] >> (lsf + mpeg25);
sample_rate = ff_mpa_freq_tab[sample_rate_index] >> (lsf + mpeg25);
for (bitrate_index = 2; bitrate_index < 30; bitrate_index++) {
frame_size =
avpriv_mpa_bitrate_tab[lsf][layer - 1][bitrate_index >> 1];
ff_mpa_bitrate_tab[lsf][layer - 1][bitrate_index >> 1];
frame_size = (frame_size * 144000) / (sample_rate << lsf) +
(bitrate_index & 1);