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https://code.videolan.org/videolan/vlc
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* modules/codec/toolame.c: MPEG-1/2 layer II audio encoder using libtoolame (http://users.tpg.com.au/adslblvi/). Patch from Christophe Massiot.
This commit is contained in:
parent
dee99e902c
commit
bb8c0315c2
46
configure.ac
46
configure.ac
@ -441,7 +441,7 @@ AC_CHECK_LIB(m,cos,[
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VLC_ADD_LDFLAGS([adjust distort a52tofloat32 dtstofloat32],[-lm])
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])
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AC_CHECK_LIB(m,pow,[
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VLC_ADD_LDFLAGS([ffmpeg stream_out_transcode stream_out_transrate i420_rgb faad equalizer vlc],[-lm])
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VLC_ADD_LDFLAGS([ffmpeg stream_out_transcode stream_out_transrate i420_rgb faad toolame equalizer vlc],[-lm])
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])
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AC_CHECK_LIB(m,sqrt,[
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VLC_ADD_LDFLAGS([headphone_channel_mixer normvol],[-lm])
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@ -1959,6 +1959,50 @@ then
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fi
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fi
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dnl
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dnl toolame encoder plugin
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dnl
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AC_ARG_ENABLE(toolame,
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[ --enable-toolame toolame codec (default disabled)])
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if test "${enable_toolame}" = "yes"
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then
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AC_ARG_WITH(toolame-tree,
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[ --with-toolame-tree=PATH toolame tree for static linking])
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if test -n "${with_toolame_tree}"
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then
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AC_MSG_CHECKING(for libtoolame.a in ${with_toolame_tree})
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real_toolame_tree="`cd ${with_toolame_tree} 2>/dev/null && pwd`"
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if test -z "${real_toolame_tree}"
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then
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dnl The given directory can't be found
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AC_MSG_RESULT(no)
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AC_MSG_ERROR([cannot cd to ${with_toolame_tree}])
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fi
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if test -f "${real_toolame_tree}/libtoolame/libtoolame.a"
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then
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dnl Use a custom toolame
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AC_MSG_RESULT(${real_toolame_tree}/libtoolame/libtoolame.a)
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VLC_ADD_BUILTINS([toolame])
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VLC_ADD_LDFLAGS([toolame],[${real_faad_tree}/libtoolame/libtoolame.a])
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VLC_ADD_CPPFLAGS([toolame],[-I${real_toolame_tree}/libtoolame])
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else
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dnl The given libtoolame wasn't built
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AC_MSG_RESULT(no)
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AC_MSG_ERROR([cannot find ${real_toolame_tree}/libtoolame/libtoolame.a, make sure you compiled libtoolame in ${with_toolame_tree}])
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fi
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else
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CPPFLAGS="${CPPFLAGS_save} ${CPPFLAGS_toolame}"
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LDFLAGS="${LDFLAGS_save} ${LDFLAGS_toolame}"
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AC_CHECK_HEADERS(toolame.h, ,
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[ AC_MSG_ERROR([Cannot find development header for libtoolame...]) ])
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AC_CHECK_LIB(toolame, toolame_init, [
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VLC_ADD_PLUGINS([toolame])
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VLC_ADD_LDFLAGS([toolame],[-ltoolame]) ],
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[ AC_MSG_ERROR([Cannot find libtoolame library...]) ])
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LDFLAGS="${LDFLAGS_save}"
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CPPFLAGS="${CPPFLAGS_save}"
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fi
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fi
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dnl dnl
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dnl dnl xvid decoder plugin
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@ -22,3 +22,4 @@ SOURCES_faad = faad.c
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SOURCES_dvbsub = dvbsub.c
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SOURCES_mash = mash.cpp
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SOURCES_x264 = x264.c
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SOURCES_toolame = toolame.c
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264
modules/codec/toolame.c
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264
modules/codec/toolame.c
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@ -0,0 +1,264 @@
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/*****************************************************************************
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* toolame.c: libtoolame encoder (MPEG-1/2 layer II) module
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* (using libtoolame from http://users.tpg.com.au/adslblvi/)
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*****************************************************************************
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* Copyright (C) 2004 VideoLAN
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* $Id$
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*
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* Authors: Christophe Massiot <massiot@via.ecp.fr>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
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*****************************************************************************/
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/*****************************************************************************
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* Preamble
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*****************************************************************************/
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#include <vlc/vlc.h>
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#include <vlc/decoder.h>
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#include <vlc/sout.h>
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#include <vlc/aout.h>
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#include <toolame.h>
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#define MPEG_FRAME_SIZE 1152
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#define MAX_CODED_FRAME_SIZE 1792
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/****************************************************************************
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* Local prototypes
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****************************************************************************/
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static int OpenEncoder ( vlc_object_t * );
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static void CloseEncoder ( vlc_object_t * );
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static block_t *Encode ( encoder_t *, aout_buffer_t * );
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/*****************************************************************************
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* Module descriptor
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*****************************************************************************/
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#define ENC_CFG_PREFIX "sout-toolame-"
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#define ENC_QUALITY_TEXT N_("Encoding quality")
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#define ENC_QUALITY_LONGTEXT N_( \
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"Allows you to specify a quality between 0.0 (high) and 50.0 (low), " \
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"instead of specifying a particular bitrate. " \
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"This will produce a VBR stream." )
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#define ENC_MODE_TEXT N_("Stereo mode")
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#define ENC_MODE_LONGTEXT N_( \
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"[0=stereo, 1=dual-mono, 2=joint-stereo]" )
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#define ENC_VBR_TEXT N_("VBR mode")
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#define ENC_VBR_LONGTEXT N_( \
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"By default the encoding is CBR." )
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vlc_module_begin();
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set_description( _("libtoolame audio encoder") );
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set_capability( "encoder", 200 );
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set_callbacks( OpenEncoder, CloseEncoder );
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add_float( ENC_CFG_PREFIX "quality", 0.0, NULL, ENC_QUALITY_TEXT,
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ENC_QUALITY_LONGTEXT, VLC_FALSE );
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add_integer( ENC_CFG_PREFIX "mode", 0, NULL, ENC_MODE_TEXT,
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ENC_MODE_LONGTEXT, VLC_FALSE );
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add_bool( ENC_CFG_PREFIX "vbr", 0, NULL, ENC_VBR_TEXT,
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ENC_VBR_LONGTEXT, VLC_FALSE );
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vlc_module_end();
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static const char *ppsz_enc_options[] = {
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"quality", "mode", "vbr", NULL
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};
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/*****************************************************************************
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* encoder_sys_t : toolame encoder descriptor
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*****************************************************************************/
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struct encoder_sys_t
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{
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/*
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* Input properties
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*/
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int16_t p_left[MPEG_FRAME_SIZE];
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int16_t p_right[MPEG_FRAME_SIZE];
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int i_nb_samples;
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audio_date_t pts;
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/*
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* libtoolame properties
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*/
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toolame_options *p_toolame;
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unsigned char p_out_buffer[MAX_CODED_FRAME_SIZE];
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};
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/*****************************************************************************
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* OpenEncoder: probe the encoder and return score
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*****************************************************************************/
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static int OpenEncoder( vlc_object_t *p_this )
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{
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encoder_t *p_enc = (encoder_t *)p_this;
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encoder_sys_t *p_sys;
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vlc_value_t val;
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if ( (p_enc->fmt_out.i_codec != VLC_FOURCC('m','p','g','a') &&
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!p_enc->b_force)
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|| p_enc->fmt_in.audio.i_channels > 2 )
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{
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return VLC_EGENERIC;
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}
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/* Allocate the memory needed to store the decoder's structure */
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if( ( p_sys = (encoder_sys_t *)malloc(sizeof(encoder_sys_t)) ) == NULL )
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{
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msg_Err( p_enc, "out of memory" );
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return VLC_EGENERIC;
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}
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p_enc->p_sys = p_sys;
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p_enc->pf_header = NULL;
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p_enc->pf_encode_audio = Encode;
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p_enc->fmt_in.i_codec = AOUT_FMT_S16_NE;
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p_enc->fmt_out.i_codec = VLC_FOURCC('m','p','g','a');
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sout_ParseCfg( p_enc, ENC_CFG_PREFIX, ppsz_enc_options, p_enc->p_cfg );
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p_sys->p_toolame = toolame_init();
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/* Set options */
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toolame_setSampleFreq( p_sys->p_toolame, p_enc->fmt_out.audio.i_rate );
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var_Get( p_enc, ENC_CFG_PREFIX "vbr", &val );
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if ( val.b_bool )
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{
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FLOAT i_quality;
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var_Get( p_enc, ENC_CFG_PREFIX "quality", &val );
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i_quality = val.i_int;
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if ( i_quality > 50.0 ) i_quality = 50.0;
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if ( i_quality < 0.0 ) i_quality = 0.0;
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toolame_setVBR( p_sys->p_toolame, 1 );
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toolame_setVBRLevel( p_sys->p_toolame, i_quality );
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}
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else
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{
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toolame_setBitrate( p_sys->p_toolame, p_enc->fmt_out.i_bitrate / 1000 );
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}
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if ( p_enc->fmt_in.audio.i_channels == 1 )
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{
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toolame_setMode( p_sys->p_toolame, MPG_MD_MONO );
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}
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else
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{
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var_Get( p_enc, ENC_CFG_PREFIX "mode", &val );
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switch ( val.i_int )
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{
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case 1:
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toolame_setMode( p_sys->p_toolame, MPG_MD_DUAL_CHANNEL );
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break;
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case 2:
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toolame_setMode( p_sys->p_toolame, MPG_MD_JOINT_STEREO );
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break;
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case 0:
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default:
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toolame_setMode( p_sys->p_toolame, MPG_MD_STEREO );
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break;
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}
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}
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if ( toolame_init_params( p_sys->p_toolame ) )
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{
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msg_Err( p_enc, "toolame initialization failed" );
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return -VLC_EGENERIC;
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}
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p_sys->i_nb_samples = 0;
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aout_DateInit( &p_sys->pts, p_enc->fmt_out.audio.i_rate );
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return VLC_SUCCESS;
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}
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/****************************************************************************
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* Encode: the whole thing
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****************************************************************************
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* This function spits out MPEG packets.
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****************************************************************************/
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static void Uninterleave( encoder_t *p_enc, int16_t *p_in, int i_nb_samples )
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{
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int16_t *p_left = p_enc->p_sys->p_left + p_enc->p_sys->i_nb_samples;
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int16_t *p_right = p_enc->p_sys->p_right + p_enc->p_sys->i_nb_samples;
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while ( i_nb_samples > 0 )
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{
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*p_left++ = *p_in++;
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*p_right++ = *p_in++;
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i_nb_samples--;
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}
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}
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static block_t *Encode( encoder_t *p_enc, aout_buffer_t *p_aout_buf )
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{
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encoder_sys_t *p_sys = p_enc->p_sys;
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int16_t *p_buffer = (int16_t *)p_aout_buf->p_buffer;
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int i_nb_samples = p_aout_buf->i_nb_samples;
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block_t *p_chain = NULL;
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mtime_t i_computed_pts = p_aout_buf->start_date -
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(mtime_t)1000000 * (mtime_t)p_sys->i_nb_samples /
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(mtime_t)p_enc->fmt_in.audio.i_rate;
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if ( aout_DateGet( &p_sys->pts ) - i_computed_pts > 10000 ||
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aout_DateGet( &p_sys->pts ) - i_computed_pts < -10000 )
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{
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msg_Dbg( p_enc, "resetting audio date" );
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aout_DateSet( &p_sys->pts, i_computed_pts );
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}
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while ( p_sys->i_nb_samples + i_nb_samples >= MPEG_FRAME_SIZE )
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{
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int i_used;
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block_t *p_block;
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Uninterleave( p_enc, p_buffer, MPEG_FRAME_SIZE - p_sys->i_nb_samples );
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i_nb_samples -= MPEG_FRAME_SIZE - p_sys->i_nb_samples;
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p_buffer += (MPEG_FRAME_SIZE - p_sys->i_nb_samples) * 2;
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toolame_encode_buffer( p_sys->p_toolame, p_sys->p_left,
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p_sys->p_right, MPEG_FRAME_SIZE,
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p_sys->p_out_buffer, MAX_CODED_FRAME_SIZE,
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&i_used );
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p_sys->i_nb_samples = 0;
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p_block = block_New( p_enc, i_used );
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p_enc->p_vlc->pf_memcpy( p_block->p_buffer, p_sys->p_out_buffer,
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i_used );
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p_block->i_length = (mtime_t)1000000 *
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(mtime_t)MPEG_FRAME_SIZE / (mtime_t)p_enc->fmt_in.audio.i_rate;
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p_block->i_dts = p_block->i_pts = aout_DateGet( &p_sys->pts );
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aout_DateIncrement( &p_sys->pts, MPEG_FRAME_SIZE );
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block_ChainAppend( &p_chain, p_block );
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}
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if ( i_nb_samples )
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{
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Uninterleave( p_enc, p_buffer, i_nb_samples );
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p_sys->i_nb_samples += i_nb_samples;
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}
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return p_chain;
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}
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/*****************************************************************************
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* CloseEncoder: toolame encoder destruction
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*****************************************************************************/
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static void CloseEncoder( vlc_object_t *p_this )
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{
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encoder_t *p_enc = (encoder_t *)p_this;
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encoder_sys_t *p_sys = p_enc->p_sys;
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toolame_deinit( p_sys->p_toolame );
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free( p_sys );
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}
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