mirror of https://code.videolan.org/videolan/vlc
* modules/codec/flac.c: added a FLAC encoder.
* modules/mux/dummy.c, modules/mux/ogg.c: you can output "normal" flac streams with the es/dummy muxer or output them with an Ogg container.
This commit is contained in:
Gildas Bazin
parent
ea1b641e16
commit
09d997200c
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@ -1,8 +1,8 @@
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/*****************************************************************************
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* flac.c: flac decoder/packetizer module making use of libflac
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* flac.c: flac decoder/packetizer/encoder module making use of libflac
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*****************************************************************************
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* Copyright (C) 1999-2001 VideoLAN
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* $Id: flac.c,v 1.2 2003/11/21 12:18:54 gbazin Exp $
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* $Id: flac.c,v 1.3 2003/11/21 20:49:13 gbazin Exp $
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*
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* Authors: Gildas Bazin <gbazin@netcourrier.com>
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* Sigmund Augdal <sigmunau@idi.ntnu.no>
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@ -30,6 +30,7 @@
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#include <vlc/input.h>
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#include <FLAC/stream_decoder.h>
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#include <FLAC/stream_encoder.h>
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#include "vlc_block_helper.h"
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@ -103,6 +104,9 @@ static int OpenDecoder ( vlc_object_t * );
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static int OpenPacketizer( vlc_object_t * );
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static void CloseDecoder ( vlc_object_t * );
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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 aout_buffer_t *DecodeBlock( decoder_t *, block_t ** );
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static block_t *PacketizeBlock( decoder_t *, block_t ** );
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@ -150,6 +154,11 @@ vlc_module_begin();
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set_capability( "packetizer", 100 );
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set_callbacks( OpenPacketizer, CloseDecoder );
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add_submodule();
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set_description( _("Flac audio encoder") );
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set_capability( "encoder", 100 );
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set_callbacks( OpenEncoder, CloseEncoder );
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vlc_module_end();
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/*****************************************************************************
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@ -211,10 +220,9 @@ static int OpenDecoder( vlc_object_t *p_this )
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/* Decode STREAMINFO */
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msg_Dbg( p_dec, "decode STREAMINFO" );
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p_sys->p_block = block_New( p_dec, p_dec->fmt_in.i_extra + 4 );
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memcpy( p_sys->p_block->p_buffer + 4, p_dec->fmt_in.p_extra,
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p_sys->p_block = block_New( p_dec, p_dec->fmt_in.i_extra );
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memcpy( p_sys->p_block->p_buffer, p_dec->fmt_in.p_extra,
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p_dec->fmt_in.i_extra );
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memcpy( p_sys->p_block->p_buffer, "fLaC", 4 );
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FLAC__stream_decoder_process_until_end_of_metadata( p_sys->p_flac );
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msg_Dbg( p_dec, "STREAMINFO decoded" );
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@ -230,7 +238,7 @@ static int OpenPacketizer( vlc_object_t *p_this )
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if( i_ret == VLC_SUCCESS )
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{
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p_dec->p_sys->b_packetizer = VLC_TRUE;
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p_dec->fmt_out.i_codec = VLC_FOURCC('f','l','a','c');
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es_format_Copy( &p_dec->fmt_out, &p_dec->fmt_in );
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}
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return i_ret;
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@ -1009,3 +1017,205 @@ static uint8_t flac_crc8( const uint8_t *data, unsigned len )
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return crc;
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}
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/*****************************************************************************
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* encoder_sys_t : flac 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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int i_headers;
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int i_samples_delay;
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int i_channels;
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FLAC__int32 *p_buffer;
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int i_buffer;
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block_t *p_chain;
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/*
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* FLAC properties
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*/
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FLAC__StreamEncoder *p_flac;
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FLAC__StreamMetadata_StreamInfo stream_info;
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/*
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* Common properties
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*/
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mtime_t i_pts;
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};
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#define STREAMINFO_SIZE 38
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static block_t *Encode( encoder_t *, aout_buffer_t * );
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static FLAC__StreamEncoderWriteStatus
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EncoderWriteCallback( const FLAC__StreamEncoder *encoder,
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const FLAC__byte buffer[],
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unsigned bytes, unsigned samples,
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unsigned current_frame, void *client_data );
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static void EncoderMetadataCallback( const FLAC__StreamEncoder *encoder,
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const FLAC__StreamMetadata *metadata,
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void *client_data );
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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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if( p_enc->fmt_out.i_codec != VLC_FOURCC('f','l','a','c') )
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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_encode_audio = Encode;
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p_sys->i_headers = 0;
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p_sys->p_buffer = 0;
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p_sys->i_buffer = 0;
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/* Create flac encoder */
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p_sys->p_flac = FLAC__stream_encoder_new();
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FLAC__stream_encoder_set_streamable_subset( p_sys->p_flac, 1 );
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FLAC__stream_encoder_set_channels( p_sys->p_flac,
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p_enc->fmt_in.audio.i_channels );
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FLAC__stream_encoder_set_sample_rate( p_sys->p_flac,
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p_enc->fmt_in.audio.i_rate );
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FLAC__stream_encoder_set_bits_per_sample( p_sys->p_flac, 16 );
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p_enc->fmt_in.i_codec = AOUT_FMT_S16_NE;
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FLAC__stream_encoder_set_write_callback( p_sys->p_flac,
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EncoderWriteCallback );
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FLAC__stream_encoder_set_metadata_callback( p_sys->p_flac,
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EncoderMetadataCallback );
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FLAC__stream_encoder_set_client_data( p_sys->p_flac, p_enc );
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/* Get and store the STREAMINFO metadata block as a p_extra */
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p_sys->p_chain = 0;
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FLAC__stream_encoder_init( p_sys->p_flac );
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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 ogg packets.
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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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block_t *p_chain;
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int i;
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p_sys->i_pts = p_aout_buf->start_date -
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(mtime_t)1000000 * (mtime_t)p_sys->i_samples_delay /
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(mtime_t)p_enc->fmt_in.audio.i_rate;
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p_sys->i_samples_delay += p_aout_buf->i_nb_samples;
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/* Convert samples to FLAC__int32 */
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if( p_sys->i_buffer < p_aout_buf->i_nb_bytes * 2 )
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{
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p_sys->p_buffer =
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realloc( p_sys->p_buffer, p_aout_buf->i_nb_bytes * 2 );
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p_sys->i_buffer = p_aout_buf->i_nb_bytes * 2;
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}
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for( i = 0 ; i < p_aout_buf->i_nb_bytes / 2 ; i++ )
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{
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p_sys->p_buffer[i]= ((int16_t *)p_aout_buf->p_buffer)[i];
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}
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FLAC__stream_encoder_process_interleaved( p_sys->p_flac, p_sys->p_buffer,
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p_aout_buf->i_nb_samples );
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p_chain = p_sys->p_chain;
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p_sys->p_chain = 0;
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return p_chain;
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}
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/*****************************************************************************
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* CloseEncoder: 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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FLAC__stream_encoder_delete( p_sys->p_flac );
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if( p_sys->p_buffer ) free( p_sys->p_buffer );
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free( p_sys );
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}
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/*****************************************************************************
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* EncoderMetadataCallback: called by libflac to output metadata
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*****************************************************************************/
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static void EncoderMetadataCallback( const FLAC__StreamEncoder *encoder,
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const FLAC__StreamMetadata *metadata,
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void *client_data )
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{
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encoder_t *p_enc = (encoder_t *)client_data;
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msg_Err( p_enc, "MetadataCallback: %i", metadata->type );
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return;
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}
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/*****************************************************************************
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* EncoderWriteCallback: called by libflac to output encoded samples
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*****************************************************************************/
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static FLAC__StreamEncoderWriteStatus
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EncoderWriteCallback( const FLAC__StreamEncoder *encoder,
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const FLAC__byte buffer[],
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unsigned bytes, unsigned samples,
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unsigned current_frame, void *client_data )
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{
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encoder_t *p_enc = (encoder_t *)client_data;
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encoder_sys_t *p_sys = p_enc->p_sys;
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block_t *p_block;
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if( samples == 0 && p_sys->i_headers <= 1 )
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{
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if( p_sys->i_headers == 1 )
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{
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msg_Err( p_enc, "Writing STREAMINFO: %i", bytes );
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/* Backup the STREAMINFO metadata block */
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p_enc->fmt_out.i_extra = STREAMINFO_SIZE + 4;
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p_enc->fmt_out.p_extra = malloc( STREAMINFO_SIZE + 4 );
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memcpy( p_enc->fmt_out.p_extra, "fLaC", 4 );
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memcpy( ((uint8_t *)p_enc->fmt_out.p_extra) + 4, buffer,
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STREAMINFO_SIZE + 4 );
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/* Fake this as the last metadata block */
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((uint8_t*)p_enc->fmt_out.p_extra)[4] |= 0x80;
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}
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p_sys->i_headers++;
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return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
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}
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p_block = block_New( p_enc, bytes );
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memcpy( p_block->p_buffer, buffer, bytes );
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p_block->i_dts = p_block->i_pts = p_block->i_length = 0;
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block_ChainAppend( &p_sys->p_chain, p_block );
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return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
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}
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@ -2,7 +2,7 @@
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* flac.c : FLAC demux module for vlc
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*****************************************************************************
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* Copyright (C) 2001 VideoLAN
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* $Id: flac.c,v 1.7 2003/11/21 12:18:54 gbazin Exp $
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* $Id: flac.c,v 1.8 2003/11/21 20:49:13 gbazin Exp $
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*
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* Authors: Gildas Bazin <gbazin@netcourrier.com>
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*
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@ -99,18 +99,15 @@ static int Open( vlc_object_t * p_this )
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es_format_Init( &fmt, AUDIO_ES, VLC_FOURCC( 'f', 'l', 'a', 'c' ) );
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p_sys->b_start = VLC_TRUE;
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/* Skip stream marker */
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stream_Read( p_input->s, NULL, 4 );
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/* We need to read and store the STREAMINFO metadata */
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i_peek = stream_Peek( p_input->s, &p_peek, 4 );
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if( p_peek[0] & 0x7F )
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i_peek = stream_Peek( p_input->s, &p_peek, 8 );
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if( p_peek[4] & 0x7F )
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{
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msg_Err( p_input, "This isn't a STREAMINFO metadata block" );
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return VLC_EGENERIC;
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}
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if( ((p_peek[1]<<16)+(p_peek[2]<<8)+p_peek[3]) != (STREAMINFO_SIZE - 4) )
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if( ((p_peek[5]<<16)+(p_peek[6]<<8)+p_peek[7]) != (STREAMINFO_SIZE - 4) )
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{
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msg_Err( p_input, "Invalid size for a STREAMINFO metadata block" );
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return VLC_EGENERIC;
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@ -132,15 +129,16 @@ static int Open( vlc_object_t * p_this )
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VLC_FOURCC( 'f', 'l', 'a', 'c' ) );
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/* Store STREAMINFO for the decoder and packetizer */
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p_sys->p_packetizer->fmt_in.i_extra = fmt.i_extra = STREAMINFO_SIZE;
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p_sys->p_packetizer->fmt_in.p_extra = malloc( STREAMINFO_SIZE );
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p_sys->p_packetizer->fmt_in.i_extra = fmt.i_extra = STREAMINFO_SIZE + 4;
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p_sys->p_packetizer->fmt_in.p_extra = malloc( STREAMINFO_SIZE + 4 );
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stream_Read( p_input->s, p_sys->p_packetizer->fmt_in.p_extra,
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STREAMINFO_SIZE );
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STREAMINFO_SIZE + 4 );
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/* Fake this as the last metadata block */
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((uint8_t*)p_sys->p_packetizer->fmt_in.p_extra)[0] |= 0x80;
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fmt.p_extra = malloc( STREAMINFO_SIZE );
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memcpy( fmt.p_extra, p_sys->p_packetizer->fmt_in.p_extra, STREAMINFO_SIZE);
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((uint8_t*)p_sys->p_packetizer->fmt_in.p_extra)[4] |= 0x80;
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fmt.p_extra = malloc( STREAMINFO_SIZE + 4 );
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memcpy( fmt.p_extra, p_sys->p_packetizer->fmt_in.p_extra,
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STREAMINFO_SIZE + 4 );
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p_sys->p_packetizer->p_module =
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module_Need( p_sys->p_packetizer, "packetizer", NULL );
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@ -1,8 +1,8 @@
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/*****************************************************************************
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* dummy.c
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* dummy.c: dummy muxer module for vlc
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*****************************************************************************
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* Copyright (C) 2001, 2002 VideoLAN
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* $Id: dummy.c,v 1.8 2003/08/17 18:44:26 fenrir Exp $
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* $Id: dummy.c,v 1.9 2003/11/21 20:49:14 gbazin Exp $
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*
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* Authors: Laurent Aimar <fenrir@via.ecp.fr>
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* Eric Petit <titer@videolan.org>
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@ -47,7 +47,6 @@ vlc_module_begin();
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set_callbacks( Open, Close );
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vlc_module_end();
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/*****************************************************************************
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* Exported prototypes
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*****************************************************************************/
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@ -56,12 +55,20 @@ static int AddStream( sout_mux_t *, sout_input_t * );
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static int DelStream( sout_mux_t *, sout_input_t * );
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static int Mux ( sout_mux_t * );
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struct sout_mux_sys_t
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{
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/* Some streams have special initialization data, we'll output this
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* data as an header in the stream. */
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vlc_bool_t b_header;
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};
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/*****************************************************************************
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* Open:
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*****************************************************************************/
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static int Open( vlc_object_t *p_this )
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{
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sout_mux_t *p_mux = (sout_mux_t*)p_this;
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sout_mux_sys_t *p_sys;
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msg_Dbg( p_mux, "Dummy/Raw muxer opened" );
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msg_Info( p_mux, "Open" );
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@ -71,6 +78,9 @@ static int Open( vlc_object_t *p_this )
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p_mux->pf_delstream = DelStream;
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p_mux->pf_mux = Mux;
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p_mux->p_sys = p_sys = malloc( sizeof( sout_mux_sys_t ) );
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p_sys->b_header = VLC_TRUE;
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return VLC_SUCCESS;
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}
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@ -81,8 +91,10 @@ static int Open( vlc_object_t *p_this )
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static void Close( vlc_object_t * p_this )
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{
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sout_mux_t *p_mux = (sout_mux_t*)p_this;
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sout_mux_sys_t *p_sys = p_mux->p_sys;
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msg_Dbg( p_mux, "Dummy/Raw muxer closed" );
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free( p_sys );
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}
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static int Capability( sout_mux_t *p_mux, int i_query,
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@ -101,24 +113,42 @@ static int Capability( sout_mux_t *p_mux, int i_query,
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static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
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{
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msg_Dbg( p_mux, "adding input" );
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return( 0 );
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return VLC_SUCCESS;
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}
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static int DelStream( sout_mux_t *p_mux, sout_input_t *p_input )
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{
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msg_Dbg( p_mux, "removing input" );
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return( 0 );
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return VLC_SUCCESS;
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}
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static int Mux ( sout_mux_t *p_mux )
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static int Mux( sout_mux_t *p_mux )
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{
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sout_mux_sys_t *p_sys = p_mux->p_sys;
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int i;
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for( i = 0; i < p_mux->i_nb_inputs; i++ )
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{
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int i_count;
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sout_fifo_t *p_fifo;
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if( p_sys->b_header && p_mux->pp_inputs[i]->p_fmt->i_extra )
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{
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/* Write header data */
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sout_buffer_t *p_data;
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p_data = sout_BufferNew( p_mux->p_sout,
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p_mux->pp_inputs[i]->p_fmt->i_extra );
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memcpy( p_data->p_buffer, p_mux->pp_inputs[i]->p_fmt->p_extra,
|
||||
p_mux->pp_inputs[i]->p_fmt->i_extra );
|
||||
|
||||
p_data->i_size = p_mux->pp_inputs[i]->p_fmt->i_extra;
|
||||
p_data->i_dts = p_data->i_pts = p_data->i_length = 0;
|
||||
|
||||
msg_Dbg( p_mux, "writing header data" );
|
||||
sout_AccessOutWrite( p_mux->p_access, p_data );
|
||||
}
|
||||
|
||||
p_fifo = p_mux->pp_inputs[i]->p_fifo;
|
||||
i_count = p_fifo->i_depth;
|
||||
while( i_count > 0 )
|
||||
|
|
@ -133,6 +163,7 @@ static int Mux ( sout_mux_t *p_mux )
|
|||
}
|
||||
|
||||
}
|
||||
return( 0 );
|
||||
}
|
||||
p_sys->b_header = VLC_FALSE;
|
||||
|
||||
return VLC_SUCCESS;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -2,7 +2,7 @@
|
|||
* ogg.c: ogg muxer module for vlc
|
||||
*****************************************************************************
|
||||
* Copyright (C) 2001, 2002 VideoLAN
|
||||
* $Id: ogg.c,v 1.21 2003/11/21 15:32:08 fenrir Exp $
|
||||
* $Id: ogg.c,v 1.22 2003/11/21 20:49:14 gbazin Exp $
|
||||
*
|
||||
* Authors: Laurent Aimar <fenrir@via.ecp.fr>
|
||||
* Gildas Bazin <gbazin@netcourrier.com>
|
||||
|
|
@ -426,6 +426,10 @@ static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
|
|||
msg_Dbg( p_mux, "speex stream" );
|
||||
break;
|
||||
|
||||
case VLC_FOURCC( 'f', 'l', 'a', 'c' ):
|
||||
msg_Dbg( p_mux, "flac stream" );
|
||||
break;
|
||||
|
||||
default:
|
||||
FREE( p_input->p_sys );
|
||||
return( VLC_EGENERIC );
|
||||
|
|
@ -638,6 +642,18 @@ static sout_buffer_t *OggCreateHeader( sout_mux_t *p_mux, mtime_t i_dts )
|
|||
}
|
||||
}
|
||||
}
|
||||
else if( p_stream->i_fourcc == VLC_FOURCC( 'f', 'l', 'a', 'c' ) )
|
||||
{
|
||||
/* flac stream marker (yeah, only that in the 1st packet) */
|
||||
op.packet = "fLaC";
|
||||
op.bytes = 4;
|
||||
op.b_o_s = 1;
|
||||
op.e_o_s = 0;
|
||||
op.granulepos = 0;
|
||||
op.packetno = p_stream->i_packet_no++;
|
||||
ogg_stream_packetin( &p_stream->os, &op );
|
||||
p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
|
||||
}
|
||||
else
|
||||
{
|
||||
/* ds header */
|
||||
|
|
@ -689,7 +705,7 @@ static sout_buffer_t *OggCreateHeader( sout_mux_t *p_mux, mtime_t i_dts )
|
|||
sout_BufferChain( &p_hdr, p_og );
|
||||
}
|
||||
}
|
||||
else
|
||||
else if( p_stream->i_fourcc != VLC_FOURCC( 'f', 'l', 'a', 'c' ) )
|
||||
{
|
||||
uint8_t com[128];
|
||||
int i_com;
|
||||
|
|
@ -708,13 +724,22 @@ static sout_buffer_t *OggCreateHeader( sout_mux_t *p_mux, mtime_t i_dts )
|
|||
sout_BufferChain( &p_hdr, p_og );
|
||||
}
|
||||
|
||||
/* Special case for mp4v */
|
||||
if( p_stream->i_fourcc == VLC_FOURCC( 'm', 'p', '4', 'v' ) &&
|
||||
/* Special case for mp4v and flac */
|
||||
if( ( p_stream->i_fourcc == VLC_FOURCC( 'm', 'p', '4', 'v' ) ||
|
||||
p_stream->i_fourcc == VLC_FOURCC( 'f', 'l', 'a', 'c' ) ) &&
|
||||
p_mux->pp_inputs[i]->p_fmt->i_extra )
|
||||
{
|
||||
/* Send a packet with the VOL data */
|
||||
/* Send a packet with the VOL data for mp4v
|
||||
* or STREAMINFO for flac */
|
||||
msg_Dbg( p_mux, "writing extra data" );
|
||||
op.bytes = p_mux->pp_inputs[i]->p_fmt->i_extra;
|
||||
op.packet = p_mux->pp_inputs[i]->p_fmt->p_extra;
|
||||
if( p_stream->i_fourcc == VLC_FOURCC( 'f', 'l', 'a', 'c' ) )
|
||||
{
|
||||
/* Skip the flac stream marker */
|
||||
((uint8_t *)op.bytes) -= 4;
|
||||
((uint8_t *)op.packet) += 4;
|
||||
}
|
||||
op.b_o_s = 0;
|
||||
op.e_o_s = 0;
|
||||
op.granulepos = 0;
|
||||
|
|
|
|||
Loading…
Reference in New Issue