/*****************************************************************************
* decoder.c: AAC decoder using libfaad2
*****************************************************************************
- * Copyright (C) 2001, 2003 VideoLAN
- * $Id: faad.c,v 1.14 2004/02/25 17:48:52 fenrir Exp $
+ * Copyright (C) 2001, 2003 the VideoLAN team
+ * $Id$
*
* Authors: Laurent Aimar <fenrir@via.ecp.fr>
- * Gildas Bazin <gbazin@netcourrier.com>
+ * 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
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
#include <vlc/vlc.h>
-#include <vlc/aout.h>
-#include <vlc/decoder.h>
+#include <vlc_aout.h>
+#include <vlc_codec.h>
+#include <vlc_input.h>
#include <faad.h>
vlc_module_begin();
set_description( _("AAC audio decoder (using libfaad2)") );
set_capability( "decoder", 100 );
+ set_category( CAT_INPUT );
+ set_subcategory( SUBCAT_INPUT_ACODEC );
set_callbacks( Open, Close );
vlc_module_end();
* Local prototypes
****************************************************************************/
static aout_buffer_t *DecodeBlock( decoder_t *, block_t ** );
-static void DoReordering( decoder_t *, uint32_t *, uint32_t *, int, int,
- uint32_t * );
+static void DoReordering( uint32_t *, uint32_t *, int, int, uint32_t * );
#define MAX_CHANNEL_POSITIONS 9
/* temporary buffer */
uint8_t *p_buffer;
int i_buffer;
- int i_buffer_size;
+ size_t i_buffer_size;
/* Channel positions of the current stream (for re-ordering) */
uint32_t pi_channel_positions[MAX_CHANNEL_POSITIONS];
+
+ vlc_bool_t b_sbr, b_ps;
+
+ int i_input_rate;
};
static const uint32_t pi_channels_in[MAX_CHANNEL_POSITIONS] =
AOUT_CHAN_REARLEFT, AOUT_CHAN_REARRIGHT,
AOUT_CHAN_CENTER, AOUT_CHAN_REARCENTER, AOUT_CHAN_LFE
};
+static const uint32_t pi_channels_guessed[MAX_CHANNEL_POSITIONS] =
+ { 0, AOUT_CHAN_CENTER, AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT,
+ AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_LFE,
+ AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_REARLEFT
+ | AOUT_CHAN_REARRIGHT,
+ AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_REARLEFT
+ | AOUT_CHAN_REARRIGHT | AOUT_CHAN_CENTER,
+ AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_REARLEFT
+ | AOUT_CHAN_REARRIGHT | AOUT_CHAN_CENTER | AOUT_CHAN_LFE,
+ AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_MIDDLELEFT
+ | AOUT_CHAN_MIDDLERIGHT | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT
+ | AOUT_CHAN_CENTER,
+ AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_MIDDLELEFT
+ | AOUT_CHAN_MIDDLERIGHT | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT
+ | AOUT_CHAN_CENTER | AOUT_CHAN_LFE
+ };
/*****************************************************************************
* OpenDecoder: probe the decoder and return score
aout_DateSet( &p_sys->date, 0 );
p_dec->fmt_out.i_cat = AUDIO_ES;
- if (p_this->p_libvlc->i_cpu & CPU_CAPABILITY_FPU)
+ if (vlc_CPU() & CPU_CAPABILITY_FPU)
p_dec->fmt_out.i_codec = VLC_FOURCC('f','l','3','2');
else
p_dec->fmt_out.i_codec = AOUT_FMT_S16_NE;
p_dec->fmt_out.audio.i_rate = i_rate;
p_dec->fmt_out.audio.i_channels = i_channels;
+ p_dec->fmt_out.audio.i_physical_channels
+ = p_dec->fmt_out.audio.i_original_channels
+ = pi_channels_guessed[i_channels];
aout_DateInit( &p_sys->date, i_rate );
}
else
/* Set the faad config */
cfg = faacDecGetCurrentConfiguration( p_sys->hfaad );
- if (p_this->p_libvlc->i_cpu & CPU_CAPABILITY_FPU)
+ if (vlc_CPU() & CPU_CAPABILITY_FPU)
cfg->outputFormat = FAAD_FMT_FLOAT;
else
cfg->outputFormat = FAAD_FMT_16BIT;
p_sys->i_buffer = p_sys->i_buffer_size = 0;
p_sys->p_buffer = 0;
+ p_sys->i_input_rate = INPUT_RATE_DEFAULT;
+
+ /* Faad2 can't deal with truncated data (eg. from MPEG TS) */
+ p_dec->b_need_packetized = VLC_TRUE;
+
+ p_sys->b_sbr = p_sys->b_ps = VLC_FALSE;
return VLC_SUCCESS;
}
p_block = *pp_block;
- if( p_block->i_flags&BLOCK_FLAG_DISCONTINUITY )
+ if( p_block->i_flags&(BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
{
block_Release( p_block );
return NULL;
}
+ if( p_block->i_rate > 0 )
+ p_sys->i_input_rate = p_block->i_rate;
+
/* Append the block to the temporary buffer */
if( p_sys->i_buffer_size < p_sys->i_buffer + p_block->i_buffer )
{
p_block->i_buffer = 0;
}
+ if( p_dec->fmt_out.audio.i_rate == 0 && p_dec->fmt_in.i_extra > 0 )
+ {
+ /* We have a decoder config so init the handle */
+ unsigned long i_rate;
+ unsigned char i_channels;
+
+ if( faacDecInit2( p_sys->hfaad, p_dec->fmt_in.p_extra,
+ p_dec->fmt_in.i_extra,
+ &i_rate, &i_channels ) >= 0 )
+ {
+ p_dec->fmt_out.audio.i_rate = i_rate;
+ p_dec->fmt_out.audio.i_channels = i_channels;
+ aout_DateInit( &p_sys->date, i_rate );
+ }
+ }
+
if( p_dec->fmt_out.audio.i_rate == 0 && p_sys->i_buffer )
{
unsigned long i_rate;
p_dec->fmt_out.audio.i_rate = frame.samplerate;
p_dec->fmt_out.audio.i_channels = frame.channels;
+ /* Adjust stream info when dealing with SBR/PS */
+ if( (p_sys->b_sbr != frame.sbr || p_sys->b_ps != frame.ps) &&
+ p_dec->p_parent->i_object_type == VLC_OBJECT_INPUT )
+ {
+ input_thread_t *p_input = (input_thread_t *)p_dec->p_parent;
+ char *psz_cat;
+ const char *psz_ext = (frame.sbr && frame.ps) ? "SBR+PS" :
+ frame.sbr ? "SBR" : "PS";
+
+ msg_Dbg( p_dec, "AAC %s (channels: %u, samplerate: %lu)",
+ psz_ext, frame.channels, frame.samplerate );
+
+ if( asprintf( &psz_cat, _("Stream %d"), p_dec->fmt_in.i_id ) != -1 )
+ {
+ input_Control( p_input, INPUT_ADD_INFO, psz_cat,
+ _("AAC extension"), "%s", psz_ext );
+ input_Control( p_input, INPUT_ADD_INFO, psz_cat,
+ _("Channels"), "%d", frame.channels );
+ input_Control( p_input, INPUT_ADD_INFO, psz_cat,
+ _("Sample rate"), _("%d Hz"), frame.samplerate );
+ free( psz_cat );
+ }
+ p_sys->b_sbr = frame.sbr; p_sys->b_ps = frame.ps;
+ }
/* Convert frame.channel_position to our own channel values */
+ p_dec->fmt_out.audio.i_physical_channels = 0;
for( i = 0; i < frame.channels; i++ )
{
/* Find the channel code */
for( j = 0; j < MAX_CHANNEL_POSITIONS; j++ )
{
if( frame.channel_position[i] == pi_channels_in[j] )
- {
- p_sys->pi_channel_positions[i] = pi_channels_out[j];
- p_dec->fmt_out.audio.i_physical_channels |=
- pi_channels_out[j];
break;
- }
}
+ if( j >= MAX_CHANNEL_POSITIONS )
+ {
+ msg_Warn( p_dec, "unknown channel ordering" );
+ /* Invent something */
+ j = i;
+ }
+ /* */
+ p_sys->pi_channel_positions[i] = pi_channels_out[j];
+ if( p_dec->fmt_out.audio.i_physical_channels & pi_channels_out[j] )
+ frame.channels--; /* We loose a duplicated channel */
+ else
+ p_dec->fmt_out.audio.i_physical_channels |= pi_channels_out[j];
}
p_dec->fmt_out.audio.i_original_channels =
p_dec->fmt_out.audio.i_physical_channels;
p_out->start_date = aout_DateGet( &p_sys->date );
p_out->end_date = aout_DateIncrement( &p_sys->date,
- frame.samples / frame.channels );
+ (frame.samples / frame.channels) * p_sys->i_input_rate / INPUT_RATE_DEFAULT );
- DoReordering( p_dec, (uint32_t *)p_out->p_buffer, samples,
+ DoReordering( (uint32_t *)p_out->p_buffer, samples,
frame.samples / frame.channels, frame.channels,
p_sys->pi_channel_positions );
decoder_sys_t *p_sys = p_dec->p_sys;
faacDecClose( p_sys->hfaad );
+ free( p_sys->p_buffer );
free( p_sys );
}
* DoReordering: do some channel re-ordering (the ac3 channel order is
* different from the aac one).
*****************************************************************************/
-static void DoReordering( decoder_t *p_dec,
- uint32_t *p_out, uint32_t *p_in, int i_samples,
+static void DoReordering( uint32_t *p_out, uint32_t *p_in, int i_samples,
int i_nb_channels, uint32_t *pi_chan_positions )
{
int pi_chan_table[MAX_CHANNEL_POSITIONS];
}
/* Do the actual reordering */
- if( p_dec->p_libvlc->i_cpu & CPU_CAPABILITY_FPU )
+ if( vlc_CPU() & CPU_CAPABILITY_FPU )
for( i = 0; i < i_samples; i++ )
for( j = 0; j < i_nb_channels; j++ )
p_out[i * i_nb_channels + pi_chan_table[j]] =
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