vorbis.c
资源名称:vlc-1.0.5.zip [点击查看]
上传用户:kjfoods
上传日期:2020-07-06
资源大小:29949k
文件大小:32k
源码类别:
midi
开发平台:
Unix_Linux
- /*****************************************************************************
- * vorbis.c: vorbis decoder/encoder/packetizer module using of libvorbis.
- *****************************************************************************
- * Copyright (C) 2001-2003 the VideoLAN team
- * Copyright (C) 2007 Société des arts technologiques
- * Copyright (C) 2007 Savoir-faire Linux
- *
- * $Id: 5d25be9d51b09abfd8c74d80738499710c0c7a2b $
- *
- * Authors: Gildas Bazin <gbazin@videolan.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
- *****************************************************************************/
- /*****************************************************************************
- * Preamble
- *****************************************************************************/
- #ifdef HAVE_CONFIG_H
- # include "config.h"
- #endif
- #include <vlc_common.h>
- #include <vlc_plugin.h>
- #include <vlc_codec.h>
- #include <vlc_aout.h>
- #include <vlc_input.h>
- #include <vlc_sout.h>
- #include <ogg/ogg.h>
- #ifdef MODULE_NAME_IS_tremor
- #include <tremor/ivorbiscodec.h>
- #else
- #include <vorbis/codec.h>
- /* vorbis header */
- #ifdef HAVE_VORBIS_VORBISENC_H
- # include <vorbis/vorbisenc.h>
- # ifndef OV_ECTL_RATEMANAGE_AVG
- # define OV_ECTL_RATEMANAGE_AVG 0x0
- # endif
- #endif
- #endif
- /*****************************************************************************
- * decoder_sys_t : vorbis decoder descriptor
- *****************************************************************************/
- struct decoder_sys_t
- {
- /* Module mode */
- bool b_packetizer;
- /*
- * Input properties
- */
- int i_headers;
- /*
- * Vorbis properties
- */
- vorbis_info vi; /* struct that stores all the static vorbis bitstream
- settings */
- vorbis_comment vc; /* struct that stores all the bitstream user
- * comments */
- vorbis_dsp_state vd; /* central working state for the packet->PCM
- * decoder */
- vorbis_block vb; /* local working space for packet->PCM decode */
- /*
- * Common properties
- */
- audio_date_t end_date;
- int i_last_block_size;
- /*
- ** Channel reordering
- */
- int pi_chan_table[AOUT_CHAN_MAX];
- };
- static const int pi_channels_maps[9] =
- {
- 0,
- AOUT_CHAN_CENTER,
- AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT,
- AOUT_CHAN_CENTER | AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT,
- AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_REARLEFT
- | AOUT_CHAN_REARRIGHT,
- AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
- | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT,
- AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
- | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT | AOUT_CHAN_LFE,
- AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
- | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT | AOUT_CHAN_MIDDLELEFT
- | AOUT_CHAN_MIDDLERIGHT,
- AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER | AOUT_CHAN_REARLEFT
- | AOUT_CHAN_REARRIGHT | AOUT_CHAN_MIDDLELEFT | AOUT_CHAN_MIDDLERIGHT
- | AOUT_CHAN_LFE
- };
- /*
- ** channel order as defined in http://www.ogghelp.com/ogg/glossary.cfm#Audio_Channels
- */
- /* recommended vorbis channel order for 6 channels */
- static const uint32_t pi_6channels_in[] =
- { AOUT_CHAN_LEFT, AOUT_CHAN_CENTER, AOUT_CHAN_RIGHT,
- AOUT_CHAN_REARLEFT, AOUT_CHAN_REARRIGHT,AOUT_CHAN_LFE,0 };
- /* recommended vorbis channel order for 4 channels */
- static const uint32_t pi_4channels_in[] =
- { AOUT_CHAN_LEFT, AOUT_CHAN_RIGHT, AOUT_CHAN_CENTER, AOUT_CHAN_LFE, 0 };
- /* recommended vorbis channel order for 3 channels */
- static const uint32_t pi_3channels_in[] =
- { AOUT_CHAN_LEFT, AOUT_CHAN_CENTER, AOUT_CHAN_RIGHT, 0 };
- /****************************************************************************
- * Local prototypes
- ****************************************************************************/
- static int OpenDecoder ( vlc_object_t * );
- static int OpenPacketizer( vlc_object_t * );
- static void CloseDecoder ( vlc_object_t * );
- static void *DecodeBlock ( decoder_t *, block_t ** );
- static int ProcessHeaders( decoder_t * );
- static void *ProcessPacket ( decoder_t *, ogg_packet *, block_t ** );
- static aout_buffer_t *DecodePacket ( decoder_t *, ogg_packet * );
- static block_t *SendPacket( decoder_t *, ogg_packet *, block_t * );
- static void ParseVorbisComments( decoder_t * );
- static void ConfigureChannelOrder(int *, int, uint32_t, bool );
- #ifdef MODULE_NAME_IS_tremor
- static void Interleave ( int32_t *, const int32_t **, int, int, int * );
- #else
- static void Interleave ( float *, const float **, int, int, int * );
- #endif
- #ifndef MODULE_NAME_IS_tremor
- static int OpenEncoder ( vlc_object_t * );
- static void CloseEncoder ( vlc_object_t * );
- static block_t *Encode ( encoder_t *, aout_buffer_t * );
- #endif
- /*****************************************************************************
- * Module descriptor
- *****************************************************************************/
- #define ENC_QUALITY_TEXT N_("Encoding quality")
- #define ENC_QUALITY_LONGTEXT N_(
- "Enforce a quality between 1 (low) and 10 (high), instead "
- "of specifying a particular bitrate. This will produce a VBR stream." )
- #define ENC_MAXBR_TEXT N_("Maximum encoding bitrate")
- #define ENC_MAXBR_LONGTEXT N_(
- "Maximum bitrate in kbps. This is useful for streaming applications." )
- #define ENC_MINBR_TEXT N_("Minimum encoding bitrate")
- #define ENC_MINBR_LONGTEXT N_(
- "Minimum bitrate in kbps. This is useful for encoding for a fixed-size channel." )
- #define ENC_CBR_TEXT N_("CBR encoding")
- #define ENC_CBR_LONGTEXT N_(
- "Force a constant bitrate encoding (CBR)." )
- vlc_module_begin ()
- set_shortname( "Vorbis" )
- set_description( N_("Vorbis audio decoder") )
- #ifdef MODULE_NAME_IS_tremor
- set_capability( "decoder", 90 )
- #else
- set_capability( "decoder", 100 )
- #endif
- set_category( CAT_INPUT )
- set_subcategory( SUBCAT_INPUT_ACODEC )
- set_callbacks( OpenDecoder, CloseDecoder )
- add_submodule ()
- set_description( N_("Vorbis audio packetizer") )
- set_capability( "packetizer", 100 )
- set_callbacks( OpenPacketizer, CloseDecoder )
- #ifndef MODULE_NAME_IS_tremor
- # define ENC_CFG_PREFIX "sout-vorbis-"
- add_submodule ()
- set_description( N_("Vorbis audio encoder") )
- set_capability( "encoder", 100 )
- #if defined(HAVE_VORBIS_VORBISENC_H)
- set_callbacks( OpenEncoder, CloseEncoder )
- #endif
- add_integer( ENC_CFG_PREFIX "quality", 0, NULL, ENC_QUALITY_TEXT,
- ENC_QUALITY_LONGTEXT, false )
- change_integer_range( 0, 10 )
- add_integer( ENC_CFG_PREFIX "max-bitrate", 0, NULL, ENC_MAXBR_TEXT,
- ENC_MAXBR_LONGTEXT, false )
- add_integer( ENC_CFG_PREFIX "min-bitrate", 0, NULL, ENC_MINBR_TEXT,
- ENC_MINBR_LONGTEXT, false )
- add_bool( ENC_CFG_PREFIX "cbr", 0, NULL, ENC_CBR_TEXT,
- ENC_CBR_LONGTEXT, false )
- #endif
- vlc_module_end ()
- #ifndef MODULE_NAME_IS_tremor
- static const char *const ppsz_enc_options[] = {
- "quality", "max-bitrate", "min-bitrate", "cbr", NULL
- };
- #endif
- /*****************************************************************************
- * OpenDecoder: probe the decoder and return score
- *****************************************************************************/
- static int OpenDecoder( vlc_object_t *p_this )
- {
- decoder_t *p_dec = (decoder_t*)p_this;
- decoder_sys_t *p_sys;
- if( p_dec->fmt_in.i_codec != VLC_FOURCC('v','o','r','b') )
- {
- return VLC_EGENERIC;
- }
- /* Allocate the memory needed to store the decoder's structure */
- if( ( p_dec->p_sys = p_sys = malloc( sizeof(*p_sys) ) ) == NULL )
- return VLC_ENOMEM;
- /* Misc init */
- aout_DateSet( &p_sys->end_date, 0 );
- p_sys->i_last_block_size = 0;
- p_sys->b_packetizer = false;
- p_sys->i_headers = 0;
- /* Take care of vorbis init */
- vorbis_info_init( &p_sys->vi );
- vorbis_comment_init( &p_sys->vc );
- /* Set output properties */
- p_dec->fmt_out.i_cat = AUDIO_ES;
- #ifdef MODULE_NAME_IS_tremor
- p_dec->fmt_out.i_codec = VLC_FOURCC('f','i','3','2');
- #else
- p_dec->fmt_out.i_codec = VLC_FOURCC('f','l','3','2');
- #endif
- /* Set callbacks */
- p_dec->pf_decode_audio = (aout_buffer_t *(*)(decoder_t *, block_t **))
- DecodeBlock;
- p_dec->pf_packetize = (block_t *(*)(decoder_t *, block_t **))
- DecodeBlock;
- return VLC_SUCCESS;
- }
- static int OpenPacketizer( vlc_object_t *p_this )
- {
- decoder_t *p_dec = (decoder_t*)p_this;
- int i_ret = OpenDecoder( p_this );
- if( i_ret == VLC_SUCCESS )
- {
- p_dec->p_sys->b_packetizer = true;
- p_dec->fmt_out.i_codec = VLC_FOURCC('v','o','r','b');
- }
- return i_ret;
- }
- /****************************************************************************
- * DecodeBlock: the whole thing
- ****************************************************************************
- * This function must be fed with ogg packets.
- ****************************************************************************/
- static void *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
- {
- decoder_sys_t *p_sys = p_dec->p_sys;
- ogg_packet oggpacket;
- if( !pp_block ) return NULL;
- if( *pp_block )
- {
- /* Block to Ogg packet */
- oggpacket.packet = (*pp_block)->p_buffer;
- oggpacket.bytes = (*pp_block)->i_buffer;
- }
- else
- {
- if( p_sys->b_packetizer ) return NULL;
- /* Block to Ogg packet */
- oggpacket.packet = NULL;
- oggpacket.bytes = 0;
- }
- oggpacket.granulepos = -1;
- oggpacket.b_o_s = 0;
- oggpacket.e_o_s = 0;
- oggpacket.packetno = 0;
- /* Check for headers */
- if( p_sys->i_headers == 0 && p_dec->fmt_in.i_extra )
- {
- /* Headers already available as extra data */
- msg_Dbg( p_dec, "headers already available as extra data" );
- p_sys->i_headers = 3;
- }
- else if( oggpacket.bytes && p_sys->i_headers < 3 )
- {
- /* Backup headers as extra data */
- uint8_t *p_extra;
- p_dec->fmt_in.p_extra =
- realloc( p_dec->fmt_in.p_extra, p_dec->fmt_in.i_extra +
- oggpacket.bytes + 2 );
- p_extra = (uint8_t *)p_dec->fmt_in.p_extra + p_dec->fmt_in.i_extra;
- *(p_extra++) = oggpacket.bytes >> 8;
- *(p_extra++) = oggpacket.bytes & 0xFF;
- memcpy( p_extra, oggpacket.packet, oggpacket.bytes );
- p_dec->fmt_in.i_extra += oggpacket.bytes + 2;
- block_Release( *pp_block );
- p_sys->i_headers++;
- return NULL;
- }
- if( p_sys->i_headers == 3 )
- {
- if( ProcessHeaders( p_dec ) != VLC_SUCCESS )
- {
- p_sys->i_headers = 0;
- p_dec->fmt_in.i_extra = 0;
- block_Release( *pp_block );
- return NULL;
- }
- else p_sys->i_headers++;
- }
- return ProcessPacket( p_dec, &oggpacket, pp_block );
- }
- /*****************************************************************************
- * ProcessHeaders: process Vorbis headers.
- *****************************************************************************/
- static int ProcessHeaders( decoder_t *p_dec )
- {
- decoder_sys_t *p_sys = p_dec->p_sys;
- ogg_packet oggpacket;
- uint8_t *p_extra;
- int i_extra;
- if( !p_dec->fmt_in.i_extra ) return VLC_EGENERIC;
- oggpacket.granulepos = -1;
- oggpacket.b_o_s = 1; /* yes this actually is a b_o_s packet :) */
- oggpacket.e_o_s = 0;
- oggpacket.packetno = 0;
- p_extra = p_dec->fmt_in.p_extra;
- i_extra = p_dec->fmt_in.i_extra;
- /* Take care of the initial Vorbis header */
- oggpacket.bytes = *(p_extra++) << 8;
- oggpacket.bytes |= (*(p_extra++) & 0xFF);
- oggpacket.packet = p_extra;
- p_extra += oggpacket.bytes;
- i_extra -= (oggpacket.bytes + 2);
- if( i_extra < 0 )
- {
- msg_Err( p_dec, "header data corrupted");
- return VLC_EGENERIC;
- }
- if( vorbis_synthesis_headerin( &p_sys->vi, &p_sys->vc, &oggpacket ) < 0 )
- {
- msg_Err( p_dec, "this bitstream does not contain Vorbis audio data");
- return VLC_EGENERIC;
- }
- /* Setup the format */
- p_dec->fmt_out.audio.i_rate = p_sys->vi.rate;
- p_dec->fmt_out.audio.i_channels = p_sys->vi.channels;
- if( p_dec->fmt_out.audio.i_channels > 9 )
- {
- msg_Err( p_dec, "invalid number of channels (not between 1 and 9): %i",
- p_dec->fmt_out.audio.i_channels );
- return VLC_EGENERIC;
- }
- p_dec->fmt_out.audio.i_physical_channels =
- p_dec->fmt_out.audio.i_original_channels =
- pi_channels_maps[p_sys->vi.channels];
- p_dec->fmt_out.i_bitrate = p_sys->vi.bitrate_nominal;
- aout_DateInit( &p_sys->end_date, p_sys->vi.rate );
- msg_Dbg( p_dec, "channels:%d samplerate:%ld bitrate:%ld",
- p_sys->vi.channels, p_sys->vi.rate, p_sys->vi.bitrate_nominal );
- /* The next packet in order is the comments header */
- oggpacket.b_o_s = 0;
- oggpacket.bytes = *(p_extra++) << 8;
- oggpacket.bytes |= (*(p_extra++) & 0xFF);
- oggpacket.packet = p_extra;
- p_extra += oggpacket.bytes;
- i_extra -= (oggpacket.bytes + 2);
- if( i_extra < 0 )
- {
- msg_Err( p_dec, "header data corrupted");
- return VLC_EGENERIC;
- }
- if( vorbis_synthesis_headerin( &p_sys->vi, &p_sys->vc, &oggpacket ) < 0 )
- {
- msg_Err( p_dec, "2nd Vorbis header is corrupted" );
- return VLC_EGENERIC;
- }
- ParseVorbisComments( p_dec );
- /* The next packet in order is the codebooks header
- * We need to watch out that this packet is not missing as a
- * missing or corrupted header is fatal. */
- oggpacket.bytes = *(p_extra++) << 8;
- oggpacket.bytes |= (*(p_extra++) & 0xFF);
- oggpacket.packet = p_extra;
- i_extra -= (oggpacket.bytes + 2);
- if( i_extra < 0 )
- {
- msg_Err( p_dec, "header data corrupted");
- return VLC_EGENERIC;
- }
- if( vorbis_synthesis_headerin( &p_sys->vi, &p_sys->vc, &oggpacket ) < 0 )
- {
- msg_Err( p_dec, "3rd Vorbis header is corrupted" );
- return VLC_EGENERIC;
- }
- if( !p_sys->b_packetizer )
- {
- /* Initialize the Vorbis packet->PCM decoder */
- vorbis_synthesis_init( &p_sys->vd, &p_sys->vi );
- vorbis_block_init( &p_sys->vd, &p_sys->vb );
- }
- else
- {
- p_dec->fmt_out.i_extra = p_dec->fmt_in.i_extra;
- p_dec->fmt_out.p_extra =
- realloc( p_dec->fmt_out.p_extra, p_dec->fmt_out.i_extra );
- memcpy( p_dec->fmt_out.p_extra,
- p_dec->fmt_in.p_extra, p_dec->fmt_out.i_extra );
- }
- ConfigureChannelOrder(p_sys->pi_chan_table, p_sys->vi.channels,
- p_dec->fmt_out.audio.i_physical_channels, true);
- return VLC_SUCCESS;
- }
- /*****************************************************************************
- * ProcessPacket: processes a Vorbis packet.
- *****************************************************************************/
- static void *ProcessPacket( decoder_t *p_dec, ogg_packet *p_oggpacket,
- block_t **pp_block )
- {
- decoder_sys_t *p_sys = p_dec->p_sys;
- block_t *p_block = *pp_block;
- /* Date management */
- if( p_block && p_block->i_pts > 0 &&
- p_block->i_pts != aout_DateGet( &p_sys->end_date ) )
- {
- aout_DateSet( &p_sys->end_date, p_block->i_pts );
- }
- if( !aout_DateGet( &p_sys->end_date ) )
- {
- /* We've just started the stream, wait for the first PTS. */
- if( p_block ) block_Release( p_block );
- return NULL;
- }
- *pp_block = NULL; /* To avoid being fed the same packet again */
- if( p_sys->b_packetizer )
- {
- return SendPacket( p_dec, p_oggpacket, p_block );
- }
- else
- {
- aout_buffer_t *p_aout_buffer;
- if( p_sys->i_headers >= 3 )
- p_aout_buffer = DecodePacket( p_dec, p_oggpacket );
- else
- p_aout_buffer = NULL;
- if( p_block ) block_Release( p_block );
- return p_aout_buffer;
- }
- }
- /*****************************************************************************
- * DecodePacket: decodes a Vorbis packet.
- *****************************************************************************/
- static aout_buffer_t *DecodePacket( decoder_t *p_dec, ogg_packet *p_oggpacket )
- {
- decoder_sys_t *p_sys = p_dec->p_sys;
- int i_samples;
- #ifdef MODULE_NAME_IS_tremor
- int32_t **pp_pcm;
- #else
- float **pp_pcm;
- #endif
- if( p_oggpacket->bytes &&
- #ifdef MODULE_NAME_IS_tremor
- vorbis_synthesis( &p_sys->vb, p_oggpacket, 1 ) == 0 )
- #else
- vorbis_synthesis( &p_sys->vb, p_oggpacket ) == 0 )
- #endif
- vorbis_synthesis_blockin( &p_sys->vd, &p_sys->vb );
- /* **pp_pcm is a multichannel float vector. In stereo, for
- * example, pp_pcm[0] is left, and pp_pcm[1] is right. i_samples is
- * the size of each channel. Convert the float values
- * (-1.<=range<=1.) to whatever PCM format and write it out */
- if( ( i_samples = vorbis_synthesis_pcmout( &p_sys->vd, &pp_pcm ) ) > 0 )
- {
- aout_buffer_t *p_aout_buffer;
- p_aout_buffer =
- decoder_NewAudioBuffer( p_dec, i_samples );
- if( p_aout_buffer == NULL ) return NULL;
- /* Interleave the samples */
- #ifdef MODULE_NAME_IS_tremor
- Interleave( (int32_t *)p_aout_buffer->p_buffer,
- (const int32_t **)pp_pcm, p_sys->vi.channels, i_samples, p_sys->pi_chan_table);
- #else
- Interleave( (float *)p_aout_buffer->p_buffer,
- (const float **)pp_pcm, p_sys->vi.channels, i_samples, p_sys->pi_chan_table);
- #endif
- /* Tell libvorbis how many samples we actually consumed */
- vorbis_synthesis_read( &p_sys->vd, i_samples );
- /* Date management */
- p_aout_buffer->start_date = aout_DateGet( &p_sys->end_date );
- p_aout_buffer->end_date = aout_DateIncrement( &p_sys->end_date, i_samples );
- return p_aout_buffer;
- }
- else
- {
- return NULL;
- }
- }
- /*****************************************************************************
- * SendPacket: send an ogg dated packet to the stream output.
- *****************************************************************************/
- static block_t *SendPacket( decoder_t *p_dec, ogg_packet *p_oggpacket,
- block_t *p_block )
- {
- decoder_sys_t *p_sys = p_dec->p_sys;
- int i_block_size, i_samples;
- i_block_size = vorbis_packet_blocksize( &p_sys->vi, p_oggpacket );
- if( i_block_size < 0 ) i_block_size = 0; /* non audio packet */
- i_samples = ( p_sys->i_last_block_size + i_block_size ) >> 2;
- p_sys->i_last_block_size = i_block_size;
- /* Date management */
- p_block->i_dts = p_block->i_pts = aout_DateGet( &p_sys->end_date );
- if( p_sys->i_headers >= 3 )
- p_block->i_length = aout_DateIncrement( &p_sys->end_date, i_samples ) - p_block->i_pts;
- else
- p_block->i_length = 0;
- return p_block;
- }
- /*****************************************************************************
- * ParseVorbisComments
- *****************************************************************************/
- static void ParseVorbisComments( decoder_t *p_dec )
- {
- char *psz_name, *psz_value, *psz_comment;
- int i = 0;
- while( i < p_dec->p_sys->vc.comments )
- {
- psz_comment = strdup( p_dec->p_sys->vc.user_comments[i] );
- if( !psz_comment )
- break;
- psz_name = psz_comment;
- psz_value = strchr( psz_comment, '=' );
- if( psz_value )
- {
- *psz_value = ' ';
- psz_value++;
- if( !p_dec->p_description )
- p_dec->p_description = vlc_meta_New();
- if( p_dec->p_description )
- vlc_meta_AddExtra( p_dec->p_description, psz_name, psz_value );
- if( !strcasecmp( psz_name, "REPLAYGAIN_TRACK_GAIN" ) ||
- !strcasecmp( psz_name, "RG_RADIO" ) )
- {
- audio_replay_gain_t *r = &p_dec->fmt_out.audio_replay_gain;
- r->pb_gain[AUDIO_REPLAY_GAIN_TRACK] = true;
- r->pf_gain[AUDIO_REPLAY_GAIN_TRACK] = atof( psz_value );
- }
- else if( !strcasecmp( psz_name, "REPLAYGAIN_TRACK_PEAK" ) ||
- !strcasecmp( psz_name, "RG_PEAK" ) )
- {
- audio_replay_gain_t *r = &p_dec->fmt_out.audio_replay_gain;
- r->pb_peak[AUDIO_REPLAY_GAIN_TRACK] = true;
- r->pf_peak[AUDIO_REPLAY_GAIN_TRACK] = atof( psz_value );
- }
- else if( !strcasecmp( psz_name, "REPLAYGAIN_ALBUM_GAIN" ) ||
- !strcasecmp( psz_name, "RG_AUDIOPHILE" ) )
- {
- audio_replay_gain_t *r = &p_dec->fmt_out.audio_replay_gain;
- r->pb_gain[AUDIO_REPLAY_GAIN_ALBUM] = true;
- r->pf_gain[AUDIO_REPLAY_GAIN_ALBUM] = atof( psz_value );
- }
- else if( !strcasecmp( psz_name, "REPLAYGAIN_ALBUM_PEAK" ) )
- {
- audio_replay_gain_t *r = &p_dec->fmt_out.audio_replay_gain;
- r->pb_peak[AUDIO_REPLAY_GAIN_ALBUM] = true;
- r->pf_peak[AUDIO_REPLAY_GAIN_ALBUM] = atof( psz_value );
- }
- }
- free( psz_comment );
- i++;
- }
- }
- /*****************************************************************************
- * Interleave: helper function to interleave channels
- *****************************************************************************/
- static void ConfigureChannelOrder(int *pi_chan_table, int i_channels, uint32_t i_channel_mask, bool b_decode)
- {
- const uint32_t *pi_channels_in;
- switch( i_channels )
- {
- case 6:
- case 5:
- pi_channels_in = pi_6channels_in;
- break;
- case 4:
- pi_channels_in = pi_4channels_in;
- break;
- case 3:
- pi_channels_in = pi_3channels_in;
- break;
- default:
- {
- int i;
- for( i = 0; i< i_channels; ++i )
- {
- pi_chan_table[i] = i;
- }
- return;
- }
- }
- if( b_decode )
- aout_CheckChannelReorder( pi_channels_in, NULL,
- i_channel_mask & AOUT_CHAN_PHYSMASK,
- i_channels,
- pi_chan_table );
- else
- aout_CheckChannelReorder( NULL, pi_channels_in,
- i_channel_mask & AOUT_CHAN_PHYSMASK,
- i_channels,
- pi_chan_table );
- }
- /*****************************************************************************
- * Interleave: helper function to interleave channels
- *****************************************************************************/
- #ifdef MODULE_NAME_IS_tremor
- static void Interleave( int32_t *p_out, const int32_t **pp_in,
- int i_nb_channels, int i_samples, int *pi_chan_table)
- {
- int i, j;
- for ( j = 0; j < i_samples; j++ )
- for ( i = 0; i < i_nb_channels; i++ )
- p_out[j * i_nb_channels + pi_chan_table[i]] = pp_in[i][j] * (FIXED32_ONE >> 24);
- }
- #else
- static void Interleave( float *p_out, const float **pp_in,
- int i_nb_channels, int i_samples, int *pi_chan_table )
- {
- int i, j;
- for ( j = 0; j < i_samples; j++ )
- for ( i = 0; i < i_nb_channels; i++ )
- p_out[j * i_nb_channels + pi_chan_table[i]] = pp_in[i][j];
- }
- #endif
- /*****************************************************************************
- * CloseDecoder: vorbis decoder destruction
- *****************************************************************************/
- static void CloseDecoder( vlc_object_t *p_this )
- {
- decoder_t *p_dec = (decoder_t *)p_this;
- decoder_sys_t *p_sys = p_dec->p_sys;
- if( !p_sys->b_packetizer && p_sys->i_headers > 3 )
- {
- vorbis_block_clear( &p_sys->vb );
- vorbis_dsp_clear( &p_sys->vd );
- }
- vorbis_comment_clear( &p_sys->vc );
- vorbis_info_clear( &p_sys->vi ); /* must be called last */
- free( p_sys );
- }
- #if defined(HAVE_VORBIS_VORBISENC_H) && !defined(MODULE_NAME_IS_tremor)
- /*****************************************************************************
- * encoder_sys_t : vorbis encoder descriptor
- *****************************************************************************/
- struct encoder_sys_t
- {
- /*
- * Vorbis properties
- */
- vorbis_info vi; /* struct that stores all the static vorbis bitstream
- settings */
- vorbis_comment vc; /* struct that stores all the bitstream user
- * comments */
- vorbis_dsp_state vd; /* central working state for the packet->PCM
- * decoder */
- vorbis_block vb; /* local working space for packet->PCM decode */
- int i_last_block_size;
- int i_samples_delay;
- int i_channels;
- /*
- * Common properties
- */
- mtime_t i_pts;
- /*
- ** Channel reordering
- */
- int pi_chan_table[AOUT_CHAN_MAX];
- };
- /*****************************************************************************
- * OpenEncoder: probe the encoder and return score
- *****************************************************************************/
- static int OpenEncoder( vlc_object_t *p_this )
- {
- encoder_t *p_enc = (encoder_t *)p_this;
- encoder_sys_t *p_sys;
- int i_quality, i_min_bitrate, i_max_bitrate, i;
- ogg_packet header[3];
- vlc_value_t val;
- uint8_t *p_extra;
- if( p_enc->fmt_out.i_codec != VLC_FOURCC('v','o','r','b') &&
- !p_enc->b_force )
- {
- return VLC_EGENERIC;
- }
- /* Allocate the memory needed to store the decoder's structure */
- if( ( p_sys = (encoder_sys_t *)malloc(sizeof(encoder_sys_t)) ) == NULL )
- return VLC_ENOMEM;
- p_enc->p_sys = p_sys;
- p_enc->pf_encode_audio = Encode;
- p_enc->fmt_in.i_codec = VLC_FOURCC('f','l','3','2');
- p_enc->fmt_out.i_codec = VLC_FOURCC('v','o','r','b');
- config_ChainParse( p_enc, ENC_CFG_PREFIX, ppsz_enc_options, p_enc->p_cfg );
- var_Get( p_enc, ENC_CFG_PREFIX "quality", &val );
- i_quality = val.i_int;
- if( i_quality > 10 ) i_quality = 10;
- if( i_quality < 0 ) i_quality = 0;
- var_Get( p_enc, ENC_CFG_PREFIX "cbr", &val );
- if( val.b_bool ) i_quality = 0;
- var_Get( p_enc, ENC_CFG_PREFIX "max-bitrate", &val );
- i_max_bitrate = val.i_int;
- var_Get( p_enc, ENC_CFG_PREFIX "min-bitrate", &val );
- i_min_bitrate = val.i_int;
- /* Initialize vorbis encoder */
- vorbis_info_init( &p_sys->vi );
- if( i_quality > 0 )
- {
- /* VBR mode */
- if( vorbis_encode_setup_vbr( &p_sys->vi,
- p_enc->fmt_in.audio.i_channels, p_enc->fmt_in.audio.i_rate,
- i_quality * 0.1 ) )
- {
- vorbis_info_clear( &p_sys->vi );
- free( p_enc->p_sys );
- msg_Err( p_enc, "VBR mode initialisation failed" );
- return VLC_EGENERIC;
- }
- /* Do we have optional hard quality restrictions? */
- if( i_max_bitrate > 0 || i_min_bitrate > 0 )
- {
- struct ovectl_ratemanage_arg ai;
- vorbis_encode_ctl( &p_sys->vi, OV_ECTL_RATEMANAGE_GET, &ai );
- ai.bitrate_hard_min = i_min_bitrate;
- ai.bitrate_hard_max = i_max_bitrate;
- ai.management_active = 1;
- vorbis_encode_ctl( &p_sys->vi, OV_ECTL_RATEMANAGE_SET, &ai );
- }
- else
- {
- /* Turn off management entirely */
- vorbis_encode_ctl( &p_sys->vi, OV_ECTL_RATEMANAGE_SET, NULL );
- }
- }
- else
- {
- if( vorbis_encode_setup_managed( &p_sys->vi,
- p_enc->fmt_in.audio.i_channels, p_enc->fmt_in.audio.i_rate,
- i_min_bitrate > 0 ? i_min_bitrate * 1000: -1,
- p_enc->fmt_out.i_bitrate,
- i_max_bitrate > 0 ? i_max_bitrate * 1000: -1 ) )
- {
- vorbis_info_clear( &p_sys->vi );
- msg_Err( p_enc, "CBR mode initialisation failed" );
- free( p_enc->p_sys );
- return VLC_EGENERIC;
- }
- }
- vorbis_encode_setup_init( &p_sys->vi );
- /* Add a comment */
- vorbis_comment_init( &p_sys->vc);
- vorbis_comment_add_tag( &p_sys->vc, "ENCODER", "VLC media player");
- /* Set up the analysis state and auxiliary encoding storage */
- vorbis_analysis_init( &p_sys->vd, &p_sys->vi );
- vorbis_block_init( &p_sys->vd, &p_sys->vb );
- /* Create and store headers */
- vorbis_analysis_headerout( &p_sys->vd, &p_sys->vc,
- &header[0], &header[1], &header[2]);
- p_enc->fmt_out.i_extra = 3 * 2 + header[0].bytes +
- header[1].bytes + header[2].bytes;
- p_extra = p_enc->fmt_out.p_extra = malloc( p_enc->fmt_out.i_extra );
- for( i = 0; i < 3; i++ )
- {
- *(p_extra++) = header[i].bytes >> 8;
- *(p_extra++) = header[i].bytes & 0xFF;
- memcpy( p_extra, header[i].packet, header[i].bytes );
- p_extra += header[i].bytes;
- }
- p_sys->i_channels = p_enc->fmt_in.audio.i_channels;
- p_sys->i_last_block_size = 0;
- p_sys->i_samples_delay = 0;
- p_sys->i_pts = 0;
- ConfigureChannelOrder(p_sys->pi_chan_table, p_sys->vi.channels,
- p_enc->fmt_in.audio.i_physical_channels, true);
- return VLC_SUCCESS;
- }
- /****************************************************************************
- * Encode: the whole thing
- ****************************************************************************
- * This function spits out ogg packets.
- ****************************************************************************/
- static block_t *Encode( encoder_t *p_enc, aout_buffer_t *p_aout_buf )
- {
- encoder_sys_t *p_sys = p_enc->p_sys;
- ogg_packet oggpacket;
- block_t *p_block, *p_chain = NULL;
- float **buffer;
- int i;
- unsigned int j;
- p_sys->i_pts = p_aout_buf->start_date -
- (mtime_t)1000000 * (mtime_t)p_sys->i_samples_delay /
- (mtime_t)p_enc->fmt_in.audio.i_rate;
- p_sys->i_samples_delay += p_aout_buf->i_nb_samples;
- buffer = vorbis_analysis_buffer( &p_sys->vd, p_aout_buf->i_nb_samples );
- /* convert samples to float and uninterleave */
- for( i = 0; i < p_sys->i_channels; i++ )
- {
- for( j = 0 ; j < p_aout_buf->i_nb_samples ; j++ )
- {
- buffer[i][j]= ((float *)p_aout_buf->p_buffer)
- [j * p_sys->i_channels + p_sys->pi_chan_table[i]];
- }
- }
- vorbis_analysis_wrote( &p_sys->vd, p_aout_buf->i_nb_samples );
- while( vorbis_analysis_blockout( &p_sys->vd, &p_sys->vb ) == 1 )
- {
- int i_samples;
- vorbis_analysis( &p_sys->vb, NULL );
- vorbis_bitrate_addblock( &p_sys->vb );
- while( vorbis_bitrate_flushpacket( &p_sys->vd, &oggpacket ) )
- {
- int i_block_size;
- p_block = block_New( p_enc, oggpacket.bytes );
- memcpy( p_block->p_buffer, oggpacket.packet, oggpacket.bytes );
- i_block_size = vorbis_packet_blocksize( &p_sys->vi, &oggpacket );
- if( i_block_size < 0 ) i_block_size = 0;
- i_samples = ( p_sys->i_last_block_size + i_block_size ) >> 2;
- p_sys->i_last_block_size = i_block_size;
- p_block->i_length = (mtime_t)1000000 *
- (mtime_t)i_samples / (mtime_t)p_enc->fmt_in.audio.i_rate;
- p_block->i_dts = p_block->i_pts = p_sys->i_pts;
- p_sys->i_samples_delay -= i_samples;
- /* Update pts */
- p_sys->i_pts += p_block->i_length;
- block_ChainAppend( &p_chain, p_block );
- }
- }
- return p_chain;
- }
- /*****************************************************************************
- * CloseEncoder: vorbis encoder destruction
- *****************************************************************************/
- static void CloseEncoder( vlc_object_t *p_this )
- {
- encoder_t *p_enc = (encoder_t *)p_this;
- encoder_sys_t *p_sys = p_enc->p_sys;
- vorbis_block_clear( &p_sys->vb );
- vorbis_dsp_clear( &p_sys->vd );
- vorbis_comment_clear( &p_sys->vc );
- vorbis_info_clear( &p_sys->vi ); /* must be called last */
- free( p_sys );
- }
- #endif /* HAVE_VORBIS_VORBISENC_H && !MODULE_NAME_IS_tremor */