/*****************************************************************************
* decoder.c: AAC decoder using libfaad2
*****************************************************************************
- * Copyright (C) 2001, 2003 VideoLAN
+ * 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.
*****************************************************************************/
-#include <vlc/vlc.h>
-#include <vlc/aout.h>
-#include <vlc/decoder.h>
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <vlc_common.h>
+#include <vlc_plugin.h>
+#include <vlc_input.h>
+#include <vlc_aout.h>
+#include <vlc_codec.h>
#include <faad.h>
static int Open( vlc_object_t * );
static void Close( vlc_object_t * );
-vlc_module_begin();
- set_description( _("AAC audio decoder (using libfaad2)") );
- set_capability( "decoder", 100 );
- set_callbacks( Open, Close );
-vlc_module_end();
+vlc_module_begin ()
+ set_description( N_("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];
+
+ bool b_sbr, b_ps;
};
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
decoder_sys_t *p_sys = p_dec->p_sys;
faacDecConfiguration *cfg;
- if( p_dec->fmt_in.i_codec != VLC_FOURCC('m','p','4','a') )
+ if( p_dec->fmt_in.i_codec != VLC_CODEC_MP4A )
{
return VLC_EGENERIC;
}
/* Allocate the memory needed to store the decoder's structure */
- if( ( p_dec->p_sys = p_sys =
- (decoder_sys_t *)malloc(sizeof(decoder_sys_t)) ) == NULL )
- {
- msg_Err( p_dec, "out of memory" );
- return VLC_EGENERIC;
- }
+ if( ( p_dec->p_sys = p_sys = malloc( sizeof(*p_sys) ) ) == NULL )
+ return VLC_ENOMEM;
/* Open a faad context */
if( ( p_sys->hfaad = faacDecOpen() ) == NULL )
aout_DateSet( &p_sys->date, 0 );
p_dec->fmt_out.i_cat = AUDIO_ES;
- if (p_this->p_libvlc->i_cpu & CPU_CAPABILITY_FPU)
- p_dec->fmt_out.i_codec = VLC_FOURCC('f','l','3','2');
+ if (vlc_CPU() & CPU_CAPABILITY_FPU)
+ p_dec->fmt_out.i_codec = VLC_CODEC_FL32;
else
p_dec->fmt_out.i_codec = AOUT_FMT_S16_NE;
p_dec->pf_decode_audio = DecodeBlock;
p_dec->fmt_in.i_extra,
&i_rate, &i_channels ) < 0 )
{
+ msg_Err( p_dec, "Failed to initialize faad using extra data" );
return VLC_EGENERIC;
}
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;
/* buffer */
p_sys->i_buffer = p_sys->i_buffer_size = 0;
- p_sys->p_buffer = 0;
+ p_sys->p_buffer = NULL;
/* Faad2 can't deal with truncated data (eg. from MPEG TS) */
- p_dec->b_need_packetized = VLC_TRUE;
+ p_dec->b_need_packetized = true;
+ p_sys->b_sbr = p_sys->b_ps = 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;
}
+ /* Remove ADTS header if we have decoder specific config */
+ if( p_dec->fmt_in.i_extra && p_block->i_buffer > 7 )
+ {
+ if( p_block->p_buffer[0] == 0xff &&
+ ( p_block->p_buffer[1] & 0xf0 ) == 0xf0 ) /* syncword */
+ { /* ADTS header present */
+ size_t i_header_size; /* 7 bytes (+ 2 bytes for crc) */
+ i_header_size = 7 + ( ( p_block->p_buffer[1] & 0x01 ) ? 0 : 2 );
+ /* FIXME: multiple blocks per frame */
+ if( p_block->i_buffer > i_header_size )
+ {
+ vlc_memcpy( p_block->p_buffer,
+ p_block->p_buffer + i_header_size,
+ p_block->i_buffer - i_header_size );
+ p_block->i_buffer -= i_header_size;
+ }
+ }
+ }
+
/* Append the block to the temporary buffer */
if( p_sys->i_buffer_size < p_sys->i_buffer + p_block->i_buffer )
{
p_sys->p_buffer = realloc( p_sys->p_buffer, p_sys->i_buffer_size );
}
- if( p_block->i_buffer )
+ if( p_block->i_buffer > 0 )
{
- memcpy( &p_sys->p_buffer[p_sys->i_buffer],
- p_block->p_buffer, p_block->i_buffer );
+ vlc_memcpy( &p_sys->p_buffer[p_sys->i_buffer],
+ p_block->p_buffer, p_block->i_buffer );
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;
+ 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 );
+ }
+ }
+
if( p_dec->fmt_out.audio.i_rate == 0 && p_sys->i_buffer )
{
unsigned long i_rate;
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 );
}
p_dec->fmt_out.audio.i_rate = frame.samplerate;
p_dec->fmt_out.audio.i_channels = frame.channels;
+ p_dec->fmt_out.audio.i_physical_channels
+ = p_dec->fmt_out.audio.i_original_channels
+ = pi_channels_guessed[frame.channels];
+ /* Adjust stream info when dealing with SBR/PS */
+ if( p_sys->b_sbr != frame.sbr || p_sys->b_ps != frame.ps )
+ {
+ 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( !p_dec->p_description )
+ p_dec->p_description = vlc_meta_New();
+ if( p_dec->p_description )
+ vlc_meta_AddExtra( p_dec->p_description, _("AAC extension"), psz_ext );
+
+ 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 = p_dec->pf_aout_buffer_new(p_dec, frame.samples/frame.channels);
+ p_out = decoder_NewAudioBuffer(p_dec, frame.samples/frame.channels);
if( p_out == NULL )
{
p_sys->i_buffer = 0;
}
p_out->start_date = aout_DateGet( &p_sys->date );
- p_out->end_date = aout_DateIncrement( &p_sys->date,
- frame.samples / frame.channels );
+ p_out->end_date = aout_DateIncrement( &p_sys->date, frame.samples / frame.channels );
- 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]] =
((uint16_t *)p_out)[i * i_nb_channels + pi_chan_table[j]] =
((uint16_t *)p_in)[i * i_nb_channels + j];
}
+
projects / vlc / blobdiff