virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2025-10-30 23:18:11 +02:00
Code Issues Releases Activity

avcodec: Remove libaacplus

Browse Source 
TODO: bump minor

It's inferior in quality to fdk-aac and has an arguably more problematic
license.

As early as 2012, a HydrogenAudio user reported:

> It has however one huge advantage: much better quality at low bitrates than
> faac and libaacplus.

(https://hydrogenaud.io/index.php?PHPSESSID=ckiq394pdglka0kj2fin6ij8t7&topic=95989.msg804633#msg804633)

I myself have made a few spectrograms for a comparison of the two
encoders as well. The FDK output is consistently better than the
libaacplus one, in all bitrates I tested.

libaacplus license is 3GPP + LGPLv2. 3GPP copyright notice is completely
proprietory, as follows:

> No part may be reproduced except as authorized by written permission.
>
> The copyright and the foregoing restriction extend to reproduction in
> all media.
>
> © 2008, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC).
>
> All rights reserved.

(The latest 26410-d00 zip from 3GPP has the same notice, but the copyright
year is changed to 2015)

The copyright part of the FDK AAC license (section 2) is a copyleft
license that permits redistribution under certain conditions (and
therefore the LGPL + libfdk-aac combination is not prohibited by
configure):

> Redistribution and use in source and binary forms, with or without
> modification, are permitted without payment of copyright license fees
> provided that you satisfy the following conditions:
>
> You must retain the complete text of this software license in
> redistributions of the FDK AAC Codec or your modifications thereto in
> source code form.
>
> You must retain the complete text of this software license in the
> documentation and/or other materials provided with redistributions of
> the FDK AAC Codec or your modifications thereto in binary form.
>
> You must make available free of charge copies of the complete source
> code of the FDK AAC Codec and your modifications thereto to recipients
> of copies in binary form.
>
> The name of Fraunhofer may not be used to endorse or promote products
> derived from this library without prior written permission.
>
> You may not charge copyright license fees for anyone to use, copy or
> distribute the FDK AAC Codec software or your modifications thereto.
>
> Your modified versions of the FDK AAC Codec must carry prominent
> notices stating that you changed the software and the date of any
> change. For modified versions of the FDK AAC Codec, the term
> "Fraunhofer FDK AAC Codec Library for Android" must be replaced by the
> term "Third-Party Modified Version of the Fraunhofer FDK AAC Codec
> Library for Android."
This commit is contained in:
Timothy Gu
2016-01-24 09:49:12 -08:00
parent 5893e87537
commit 9ba54c1b82
8 changed files with 6 additions and 162 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
Changelog
View File

@@ -60,6 +60,7 @@ version <next>:
- convolution filter
- libquvi support removed
- support for dvaudio in wav and avi
- libaacplus support removed
version 2.8:

2
LICENSE.md
View File

@@ -104,7 +104,7 @@ license version needs to be upgraded by passing `--enable-version3` to configure
incompatible libraries
----------------------
The Fraunhofer AAC library, FAAC and aacplus are under licenses which
The Fraunhofer AAC library and FAAC are under licenses which
are incompatible with the GPLv2 and v3. We do not know for certain if their
licenses are compatible with the LGPL.
If you wish to enable these libraries, pass `--enable-nonfree` to configure.

5
configure vendored
View File

@@ -207,7 +207,6 @@ External library support:
if openssl is not used [no]
--disable-iconv disable iconv [autodetect]
--enable-ladspa enable LADSPA audio filtering [no]
--enable-libaacplus enable AAC+ encoding via libaacplus [no]
--enable-libass enable libass subtitles rendering,
needed for subtitles and ass filter [no]
--enable-libbluray enable BluRay reading using libbluray [no]
@@ -1435,7 +1434,6 @@ EXTERNAL_LIBRARY_LIST="
gnutls
iconv
ladspa
libaacplus
libass
libbluray
libbs2b
@@ -2604,7 +2602,6 @@ mjpeg2jpeg_bsf_select="jpegtables"
# external libraries
chromaprint_muxer_deps="chromaprint"
libaacplus_encoder_deps="libaacplus"
libcelt_decoder_deps="libcelt"
libdcadec_decoder_deps="libdcadec"
libfaac_encoder_deps="libfaac"
@@ -4888,7 +4885,6 @@ die_license_disabled gpl libxavs
die_license_disabled gpl libxvid
die_license_disabled gpl x11grab
die_license_disabled nonfree libaacplus
die_license_disabled nonfree libfaac
die_license_disabled nonfree nvenc
enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
@@ -5464,7 +5460,6 @@ enabled gmp && require2 gmp gmp.h mpz_export -lgmp
enabled gnutls && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
enabled ladspa && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
enabled libiec61883 && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
enabled libaacplus && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
enabled libass && require_pkg_config libass ass/ass.h ass_library_init
enabled libbluray && require_pkg_config libbluray libbluray/bluray.h bd_open
enabled libbs2b && require_pkg_config libbs2b bs2b.h bs2b_open

6
doc/general.texi
View File

@@ -881,10 +881,10 @@ following image formats are supported:
@item Name @tab Encoding @tab Decoding @tab Comments
@item 8SVX exponential @tab @tab X
@item 8SVX fibonacci @tab @tab X
@item AAC+ @tab E @tab IX
@tab encoding supported through external library libaacplus
@item AAC @tab E @tab X
@tab encoding supported through external library libfaac and libvo-aacenc
@tab encoding supported through external library libfaac, libfdk-aac and libvo-aacenc
@item AAC+ @tab E @tab IX
@tab encoding supported through external library libfdk-aac
@item AC-3 @tab IX @tab IX
@item ADPCM 4X Movie @tab @tab X
@item APDCM Yamaha AICA @tab @tab X

2
doc/platform.texi
View File

@@ -314,7 +314,7 @@ These library packages are only available from
@uref{http://sourceware.org/cygwinports/, Cygwin Ports}:
@example
yasm, libSDL-devel, libfaac-devel, libaacplus-devel, libgsm-devel, libmp3lame-devel,
yasm, libSDL-devel, libfaac-devel, libgsm-devel, libmp3lame-devel,
libschroedinger1.0-devel, speex-devel, libtheora-devel, libxvidcore-devel
@end example

1
libavcodec/Makefile
View File

@@ -798,7 +798,6 @@ OBJS-$(CONFIG_WTV_DEMUXER) += mpeg4audio.o mpegaudiodata.o
OBJS-$(CONFIG_ELBG_FILTER) += elbg.o
# external codec libraries
OBJS-$(CONFIG_LIBAACPLUS_ENCODER) += libaacplus.o
OBJS-$(CONFIG_LIBCELT_DECODER) += libcelt_dec.o
OBJS-$(CONFIG_LIBDCADEC_DECODER) += libdcadec.o dca.o
OBJS-$(CONFIG_LIBFAAC_ENCODER) += libfaac.o

1
libavcodec/allcodecs.c
View File

@@ -593,7 +593,6 @@ void avcodec_register_all(void)
REGISTER_ENCODER(LIBXAVS, libxavs);
REGISTER_ENCODER(LIBXVID, libxvid);
REGISTER_DECODER(LIBZVBI_TELETEXT, libzvbi_teletext);
REGISTER_ENCODER(LIBAACPLUS, libaacplus);
/* text */
REGISTER_DECODER(BINTEXT, bintext);

150
libavcodec/libaacplus.c
View File

@@ -1,150 +0,0 @@
/*
* Interface to libaacplus for aac+ (sbr+ps) encoding
* Copyright (c) 2010 tipok <piratfm@gmail.com>
*
* 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
*/
/**
* @file
* Interface to libaacplus for aac+ (sbr+ps) encoding.
*/
#include <aacplus.h>
#include "avcodec.h"
#include "internal.h"
typedef struct aacPlusAudioContext {
aacplusEncHandle aacplus_handle;
unsigned long max_output_bytes;
unsigned long samples_input;
} aacPlusAudioContext;
static int aacPlus_encode_close(AVCodecContext *avctx);
static av_cold int aacPlus_encode_init(AVCodecContext *avctx)
{
aacPlusAudioContext *s = avctx->priv_data;
aacplusEncConfiguration *aacplus_cfg;
/* number of channels */
if (avctx->channels < 1 || avctx->channels > 2) {
av_log(avctx, AV_LOG_ERROR, "encoding %d channel(s) is not allowed\n", avctx->channels);
return AVERROR(EINVAL);
}
if (avctx->profile != FF_PROFILE_AAC_LOW && avctx->profile != FF_PROFILE_UNKNOWN) {
av_log(avctx, AV_LOG_ERROR, "invalid AAC profile: %d, only LC supported\n", avctx->profile);
return AVERROR(EINVAL);
}
s->aacplus_handle = aacplusEncOpen(avctx->sample_rate, avctx->channels,
&s->samples_input, &s->max_output_bytes);
if (!s->aacplus_handle) {
av_log(avctx, AV_LOG_ERROR, "can't open encoder\n");
return AVERROR(EINVAL);
}
/* check aacplus version */
aacplus_cfg = aacplusEncGetCurrentConfiguration(s->aacplus_handle);
aacplus_cfg->bitRate = avctx->bit_rate;
aacplus_cfg->bandWidth = avctx->cutoff;
aacplus_cfg->outputFormat = !(avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER);
aacplus_cfg->inputFormat = avctx->sample_fmt == AV_SAMPLE_FMT_FLT ? AACPLUS_INPUT_FLOAT : AACPLUS_INPUT_16BIT;
if (!aacplusEncSetConfiguration(s->aacplus_handle, aacplus_cfg)) {
av_log(avctx, AV_LOG_ERROR, "libaacplus doesn't support this output format!\n");
aacPlus_encode_close(avctx);
return AVERROR(EINVAL);
}
avctx->frame_size = s->samples_input / avctx->channels;
/* Set decoder specific info */
avctx->extradata_size = 0;
if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) {
unsigned char *buffer = NULL;
unsigned long decoder_specific_info_size;
if (aacplusEncGetDecoderSpecificInfo(s->aacplus_handle, &buffer,
&decoder_specific_info_size) == 1) {
avctx->extradata = av_malloc(decoder_specific_info_size + AV_INPUT_BUFFER_PADDING_SIZE);
if (!avctx->extradata) {
free(buffer);
aacPlus_encode_close(avctx);
return AVERROR(ENOMEM);
}
avctx->extradata_size = decoder_specific_info_size;
memcpy(avctx->extradata, buffer, avctx->extradata_size);
}
free(buffer);
}
return 0;
}
static int aacPlus_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
const AVFrame *frame, int *got_packet)
{
aacPlusAudioContext *s = avctx->priv_data;
int32_t *input_buffer = (int32_t *)frame->data[0];
int ret;
if ((ret = ff_alloc_packet2(avctx, pkt, s->max_output_bytes, 0)) < 0)
return ret;
pkt->size = aacplusEncEncode(s->aacplus_handle, input_buffer,
s->samples_input, pkt->data, pkt->size);
*got_packet = 1;
pkt->pts = frame->pts;
return 0;
}
static av_cold int aacPlus_encode_close(AVCodecContext *avctx)
{
aacPlusAudioContext *s = avctx->priv_data;
av_freep(&avctx->extradata);
aacplusEncClose(s->aacplus_handle);
s->aacplus_handle = NULL;
return 0;
}
static const AVProfile profiles[] = {
{ FF_PROFILE_AAC_LOW, "LC" },
{ FF_PROFILE_UNKNOWN },
};
AVCodec ff_libaacplus_encoder = {
.name = "libaacplus",
.long_name = NULL_IF_CONFIG_SMALL("libaacplus AAC+ (Advanced Audio Codec with SBR+PS)"),
.type = AVMEDIA_TYPE_AUDIO,
.id = AV_CODEC_ID_AAC,
.priv_data_size = sizeof(aacPlusAudioContext),
.init = aacPlus_encode_init,
.encode2 = aacPlus_encode_frame,
.close = aacPlus_encode_close,
.sample_fmts = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_S16,
AV_SAMPLE_FMT_FLT,
AV_SAMPLE_FMT_NONE },
.profiles = profiles,
.channel_layouts = (const uint64_t[]) { AV_CH_LAYOUT_MONO,
AV_CH_LAYOUT_STEREO,
0 },
};