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Commit a3c92b8f authored by Henri Fallon's avatar Henri Fallon
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Added LPCM support. It should work with stereo LPCM.
Untested with 5-ways LPCM streams.
parent b947d063
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Showing with 96 additions and 237 deletions
Makefile
View file @ a3c92b8f
......@@ -77,7 +77,6 @@ AC3_SPDIF := src/ac3_spdif/ac3_spdif.o \
src/ac3_spdif/ac3_iec958.o
LPCM_DECODER := src/lpcm_decoder/lpcm_decoder_thread.o \
src/lpcm_decoder/lpcm_decoder.o
AUDIO_DECODER := src/audio_decoder/audio_decoder.o \
src/audio_decoder/adec_generic.o \
......
TODO
View file @ a3c92b8f
......@@ -56,7 +56,7 @@ Description: Cope with vls/vlc clock jitter
The internal clocks of the server and the client are not assured to be
in perfect synchronization, which may be annoying when playing a movie.
Reduce this jitter by using a well-chosen filter.
Status: Todo
Status: Done 1 May 2001 (henri)
Task: 0x58
Difficulty: Medium
......@@ -541,7 +541,7 @@ Urgency: Normal
Description: LPCM decoder
The LPCM decoder is full of stubs, it only parses the stream
but does not decode it. Fix this.
Status: Todo
Status: Done 12 Jun 2001 (henri)
Task: 0x1c
Difficulty: Guru
......
src/lpcm_decoder/lpcm_decoder.c deleted 100644 → 0
View file @ b947d063
/*****************************************************************************
* lpcm_decoder.c: core lpcm decoder
*****************************************************************************
* Copyright (C) 1999, 2000 VideoLAN
* $Id: lpcm_decoder.c,v 1.7 2001/04/06 09:15:48 sam Exp $
*
* Authors: Samuel Hocevar <sam@zoy.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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
*****************************************************************************/
#include "defs.h"
#include <stdio.h>
#include <string.h> /* memcpy(), memset() */
#include "config.h"
#include "common.h"
#include "threads.h"
#include "mtime.h"
#include "intf_msg.h"
//#include "int_types.h"
#include "lpcm_decoder.h"
int lpcm_init (lpcmdec_t * p_lpcmdec)
{
intf_DbgMsg( "LPCM Debug: lpmcm init called" );
return 0;
}
int lpcm_decode_frame (lpcmdec_t * p_lpcmdec, s16 * buffer)
{
/*
* XXX was part of ac3dec, is to change
int i;
if (parse_bsi (p_ac3dec))
return 1;
for (i = 0; i < 6; i++) {
if (parse_audblk (p_ac3dec, i))
return 1;
if (exponent_unpack (p_ac3dec))
return 1;
bit_allocate (p_ac3dec);
mantissa_unpack (p_ac3dec);
if (p_ac3dec->bsi.acmod == 0x2)
rematrix (p_ac3dec);
imdct (p_ac3dec);
downmix (p_ac3dec, buffer);
buffer += 2*256;
}
parse_auxdata (p_ac3dec);
*/
return 0;
}
src/lpcm_decoder/lpcm_decoder.h deleted 100644 → 0
View file @ b947d063
/*****************************************************************************
* lpcm_decoder.h : lpcm decoder interface
*****************************************************************************
* Copyright (C) 1999, 2000 VideoLAN
* $Id: lpcm_decoder.h,v 1.3 2001/03/21 13:42:34 sam Exp $
*
* Authors: Samuel Hocevar <sam@zoy.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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*****************************************************************************/
typedef struct lpcmdec_s lpcmdec_t;
typedef struct lpcm_sync_info_s {
int sample_rate; /* sample rate in Hz */
int frame_size; /* frame size in bytes */
int bit_rate; /* nominal bit rate in kbps */
} lpcm_sync_info_t;
typedef struct lpcm_byte_stream_s {
u8 * p_byte;
u8 * p_end;
void * info;
} lpcm_byte_stream_t;
int lpcm_init (lpcmdec_t * p_lpcmdec);
int lpcm_sync_frame (lpcmdec_t * p_lpcmdec, lpcm_sync_info_t * p_sync_info);
int lpcm_decode_frame (lpcmdec_t * p_lcpmdec, s16 * buffer);
//static lpcm_byte_stream_t * lpcm_byte_stream (lcpmdec_t * p_lpcmdec);
void lpcm_byte_stream_next (lpcm_byte_stream_t * p_byte_stream);
typedef struct lpcm_bit_stream_s {
u32 buffer;
int i_available;
lpcm_byte_stream_t byte_stream;
} lpcm_bit_stream_t;
struct lpcmdec_s {
/*
* Input properties
*/
/* The bit stream structure handles the PES stream at the bit level */
lpcm_bit_stream_t bit_stream;
};
static lpcm_byte_stream_t * lpcm_byte_stream (lpcmdec_t * p_lpcmdec)
{
return &(p_lpcmdec->bit_stream.byte_stream);
}
src/lpcm_decoder/lpcm_decoder_thread.c
View file @ a3c92b8f
......@@ -2,9 +2,10 @@
* lpcm_decoder_thread.c: lpcm decoder thread
*****************************************************************************
* Copyright (C) 1999, 2000 VideoLAN
* $Id: lpcm_decoder_thread.c,v 1.15 2001/05/31 01:37:08 sam Exp $
* $Id: lpcm_decoder_thread.c,v 1.16 2001/06/12 13:50:09 henri Exp $
*
* Authors: Samuel Hocevar <sam@zoy.org>
* Henri Fallon <henri@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
......@@ -46,11 +47,8 @@
#include "audio_output.h"
#include "lpcm_decoder.h"
#include "lpcm_decoder_thread.h"
#define LPCMDEC_FRAME_SIZE (2*1536) /* May be useless */
/*****************************************************************************
* Local prototypes
*****************************************************************************/
......@@ -62,14 +60,16 @@ static void EndThread (lpcmdec_thread_t * p_adec);
/*****************************************************************************
* lpcmdec_CreateThread: creates an lpcm decoder thread
*****************************************************************************/
vlc_thread_t lpcmdec_CreateThread (adec_config_t * p_config)
vlc_thread_t lpcmdec_CreateThread( adec_config_t * p_config )
{
lpcmdec_thread_t * p_lpcmdec;
intf_DbgMsg ( "lpcm: creating lpcm decoder thread" );
intf_DbgMsg( "LPCM: creating lpcm decoder thread" );
/* Allocate the memory needed to store the thread's structure */
if ((p_lpcmdec = (lpcmdec_thread_t *)malloc (sizeof(lpcmdec_thread_t))) == NULL) {
intf_ErrMsg ( "lpcm error: cannot create lpcmdec_thread_t" );
if( (p_lpcmdec = (lpcmdec_thread_t *)malloc (sizeof(lpcmdec_thread_t)) )
== NULL)
{
intf_ErrMsg( "LPCM : error : cannot create lpcmdec_thread_t" );
return 0;
}
......@@ -79,23 +79,21 @@ vlc_thread_t lpcmdec_CreateThread (adec_config_t * p_config)
p_lpcmdec->p_config = p_config;
p_lpcmdec->p_fifo = p_config->decoder_config.p_decoder_fifo;
/* Initialize the lpcm decoder structures */
lpcm_init (&p_lpcmdec->lpcm_decoder);
/*
* Initialize the output properties
*/
p_lpcmdec->p_aout_fifo = NULL;
/* Spawn the lpcm decoder thread */
if (vlc_thread_create(&p_lpcmdec->thread_id, "lpcm decoder", (vlc_thread_func_t)RunThread, (void *)p_lpcmdec)) {
intf_ErrMsg ( "lpcm error: cannot spawn thread" );
if( vlc_thread_create( &p_lpcmdec->thread_id, "lpcm decoder",
(vlc_thread_func_t)RunThread, (void *)p_lpcmdec ) )
{
intf_ErrMsg( "LPCM : error : cannot spawn thread" );
free (p_lpcmdec);
return 0;
}
intf_DbgMsg ( "LPCM Debug: lpcm decoder thread (%p) created", p_lpcmdec );
intf_DbgMsg( "LPCM Debug: lpcm decoder thread (%p) created\n", p_lpcmdec );
return p_lpcmdec->thread_id;
}
......@@ -106,37 +104,44 @@ vlc_thread_t lpcmdec_CreateThread (adec_config_t * p_config)
*****************************************************************************/
static int InitThread (lpcmdec_thread_t * p_lpcmdec)
{
lpcm_byte_stream_t * byte_stream;
intf_DbgMsg ( "LPCM Debug: initializing lpcm decoder thread %p", p_lpcmdec );
intf_DbgMsg ( "lpcm Debug: initializing lpcm decoder thread %p",
p_lpcmdec );
/* Our first job is to initialize the bit stream structure with the
* beginning of the input stream */
vlc_mutex_lock (&p_lpcmdec->p_fifo->data_lock);
while (DECODER_FIFO_ISEMPTY(*p_lpcmdec->p_fifo)) {
if (p_lpcmdec->p_fifo->b_die) {
while (DECODER_FIFO_ISEMPTY(*p_lpcmdec->p_fifo))
{
if (p_lpcmdec->p_fifo->b_die)
{
vlc_mutex_unlock (&p_lpcmdec->p_fifo->data_lock);
return -1;
}
vlc_cond_wait (&p_lpcmdec->p_fifo->data_wait, &p_lpcmdec->p_fifo->data_lock);
vlc_cond_wait (&p_lpcmdec->p_fifo->data_wait,
&p_lpcmdec->p_fifo->data_lock);
}
p_lpcmdec->p_data = DECODER_FIFO_START (*p_lpcmdec->p_fifo)->p_first;
byte_stream = lpcm_byte_stream (&p_lpcmdec->lpcm_decoder);
byte_stream->p_byte = p_lpcmdec->p_data->p_payload_start;
byte_stream->p_end = p_lpcmdec->p_data->p_payload_end;
byte_stream->info = p_lpcmdec;
vlc_mutex_unlock (&p_lpcmdec->p_fifo->data_lock);
/* Init the BitStream */
p_lpcmdec->p_config->decoder_config.pf_init_bit_stream(
&p_lpcmdec->bit_stream,
p_lpcmdec->p_config->decoder_config.p_decoder_fifo,
NULL, NULL);
/* Creating the audio output fifo */
p_lpcmdec->p_aout_fifo = aout_CreateFifo( AOUT_ADEC_STEREO_FIFO, 2, 0, 0,
LPCMDEC_FRAME_SIZE, NULL );
p_lpcmdec->p_aout_fifo = aout_CreateFifo( AOUT_ADEC_STEREO_FIFO, 2, 48000,
0, LPCMDEC_FRAME_SIZE/2, NULL );
if ( p_lpcmdec->p_aout_fifo == NULL )
{
return -1;
}
intf_DbgMsg ( "LPCM Debug: lpcm decoder thread %p initialized", p_lpcmdec );
return 0;
intf_DbgMsg( "LPCM Debug: lpcm decoder thread %p initialized\n",
p_lpcmdec );
return( 0 );
}
/*****************************************************************************
......@@ -144,12 +149,8 @@ static int InitThread (lpcmdec_thread_t * p_lpcmdec)
*****************************************************************************/
static void RunThread (lpcmdec_thread_t * p_lpcmdec)
{
int sync;
intf_DbgMsg( "LPCM Debug: running lpcm decoder thread (%p) (pid== %i)", p_lpcmdec, getpid() );
/* Fucking holy piece of shit ! */
//msleep (INPUT_PTS_DELAY);
intf_DbgMsg( "LPCM Debug: running lpcm decoder thread (%p) (pid== %i)",
p_lpcmdec, getpid() );
/* Initializing the lpcm decoder thread */
if (InitThread (p_lpcmdec))
......@@ -157,51 +158,56 @@ static void RunThread (lpcmdec_thread_t * p_lpcmdec)
p_lpcmdec->p_fifo->b_error = 1;
}
sync = 0;
p_lpcmdec->sync_ptr = 0;
/* lpcm decoder thread's main loop */
/* FIXME : do we have enough room to store the decoded frames ?? */
while ((!p_lpcmdec->p_fifo->b_die) && (!p_lpcmdec->p_fifo->b_error))
{
s16 * buffer;
lpcm_sync_info_t sync_info;
if (!sync)
{
/* have to find a synchro point */
}
byte_t * buffer,p_temp[LPCMDEC_FRAME_SIZE];
int i_loop;
byte_t byte1, byte2;
if (DECODER_FIFO_START(*p_lpcmdec->p_fifo)->i_pts)
if( DECODER_FIFO_START(*p_lpcmdec->p_fifo)->i_pts )
{
p_lpcmdec->p_aout_fifo->date[p_lpcmdec->p_aout_fifo->l_end_frame] = DECODER_FIFO_START(*p_lpcmdec->p_fifo)->i_pts;
p_lpcmdec->p_aout_fifo->date[p_lpcmdec->p_aout_fifo->l_end_frame] =
DECODER_FIFO_START(*p_lpcmdec->p_fifo)->i_pts;
DECODER_FIFO_START(*p_lpcmdec->p_fifo)->i_pts = 0;
}
else
{
p_lpcmdec->p_aout_fifo->date[p_lpcmdec->p_aout_fifo->l_end_frame] = LAST_MDATE;
{
p_lpcmdec->p_aout_fifo->date[p_lpcmdec->p_aout_fifo->l_end_frame] =
LAST_MDATE;
}
p_lpcmdec->p_aout_fifo->l_rate = sync_info.sample_rate;
buffer = ((s16 *)p_lpcmdec->p_aout_fifo->buffer) + (p_lpcmdec->p_aout_fifo->l_end_frame * LPCMDEC_FRAME_SIZE);
if (lpcm_decode_frame (&p_lpcmdec->lpcm_decoder, buffer))
buffer = ((byte_t *)p_lpcmdec->p_aout_fifo->buffer) +
(p_lpcmdec->p_aout_fifo->l_end_frame * LPCMDEC_FRAME_SIZE);
byte1 = GetBits(&p_lpcmdec->bit_stream, 8);
byte2 = GetBits(&p_lpcmdec->bit_stream, 8);
/* Get the sync word : 0x0180 */
while( ( byte1 != 0x01 || byte2 != 0x80 ) && (!p_lpcmdec->p_fifo->b_die)
&& (!p_lpcmdec->p_fifo->b_error) )
{
sync = 0;
goto bad_frame;
byte1 = byte2;
byte2 = GetBits(&p_lpcmdec->bit_stream, 8);
}
GetChunk( &p_lpcmdec->bit_stream, p_temp, LPCMDEC_FRAME_SIZE);
for( i_loop = 0; i_loop < LPCMDEC_FRAME_SIZE/2; i_loop++ )
{
buffer[2*i_loop]=p_temp[2*i_loop+1];
buffer[2*i_loop+1]=p_temp[2*i_loop];
}
vlc_mutex_lock (&p_lpcmdec->p_aout_fifo->data_lock);
p_lpcmdec->p_aout_fifo->l_end_frame = (p_lpcmdec->p_aout_fifo->l_end_frame + 1) & AOUT_FIFO_SIZE;
p_lpcmdec->p_aout_fifo->l_end_frame =
(p_lpcmdec->p_aout_fifo->l_end_frame + 1) & AOUT_FIFO_SIZE;
vlc_cond_signal (&p_lpcmdec->p_aout_fifo->data_wait);
vlc_mutex_unlock (&p_lpcmdec->p_aout_fifo->data_lock);
intf_DbgMsg( "LPCM Debug: %x", *buffer );
bad_frame:
continue;
}
/* If b_error is set, the lpcm decoder thread enters the error loop */
......@@ -217,56 +223,52 @@ static void RunThread (lpcmdec_thread_t * p_lpcmdec)
/*****************************************************************************
* ErrorThread : lpcm decoder's RunThread() error loop
*****************************************************************************/
static void ErrorThread (lpcmdec_thread_t * p_lpcmdec)
static void ErrorThread( lpcmdec_thread_t * p_lpcmdec )
{
/* We take the lock, because we are going to read/write the start/end
* indexes of the decoder fifo */
vlc_mutex_lock (&p_lpcmdec->p_fifo->data_lock);
vlc_mutex_lock( &p_lpcmdec->p_fifo->data_lock );
/* Wait until a `die' order is sent */
while (!p_lpcmdec->p_fifo->b_die) {
while( !p_lpcmdec->p_fifo->b_die )
{
/* Trash all received PES packets */
while (!DECODER_FIFO_ISEMPTY(*p_lpcmdec->p_fifo)) {
p_lpcmdec->p_fifo->pf_delete_pes(p_lpcmdec->p_fifo->p_packets_mgt,
DECODER_FIFO_START(*p_lpcmdec->p_fifo));
DECODER_FIFO_INCSTART (*p_lpcmdec->p_fifo);
while( !DECODER_FIFO_ISEMPTY(*p_lpcmdec->p_fifo) )
{
p_lpcmdec->p_fifo->pf_delete_pes( p_lpcmdec->p_fifo->p_packets_mgt,
DECODER_FIFO_START(*p_lpcmdec->p_fifo ));
DECODER_FIFO_INCSTART( *p_lpcmdec->p_fifo );
}
/* Waiting for the input thread to put new PES packets in the fifo */
vlc_cond_wait (&p_lpcmdec->p_fifo->data_wait, &p_lpcmdec->p_fifo->data_lock);
vlc_cond_wait ( &p_lpcmdec->p_fifo->data_wait,
&p_lpcmdec->p_fifo->data_lock );
}
/* We can release the lock before leaving */
vlc_mutex_unlock (&p_lpcmdec->p_fifo->data_lock);
vlc_mutex_unlock( &p_lpcmdec->p_fifo->data_lock );
}
/*****************************************************************************
* EndThread : lpcm decoder thread destruction
*****************************************************************************/
static void EndThread (lpcmdec_thread_t * p_lpcmdec)
static void EndThread( lpcmdec_thread_t * p_lpcmdec )
{
intf_DbgMsg( "LPCM Debug: destroying lpcm decoder thread %p", p_lpcmdec );
/* If the audio output fifo was created, we destroy it */
if (p_lpcmdec->p_aout_fifo != NULL) {
aout_DestroyFifo (p_lpcmdec->p_aout_fifo);
if( p_lpcmdec->p_aout_fifo != NULL )
{
aout_DestroyFifo( p_lpcmdec->p_aout_fifo );
/* Make sure the output thread leaves the NextFrame() function */
vlc_mutex_lock (&(p_lpcmdec->p_aout_fifo->data_lock));
vlc_cond_signal (&(p_lpcmdec->p_aout_fifo->data_wait));
vlc_mutex_unlock (&(p_lpcmdec->p_aout_fifo->data_lock));
vlc_mutex_lock( &(p_lpcmdec->p_aout_fifo->data_lock) );
vlc_cond_signal( &(p_lpcmdec->p_aout_fifo->data_wait) );
vlc_mutex_unlock( &(p_lpcmdec->p_aout_fifo->data_lock) );
}
/* Destroy descriptor */
free (p_lpcmdec);
free( p_lpcmdec );
intf_DbgMsg( "LPCM Debug: lpcm decoder thread %p destroyed", p_lpcmdec );
}
void lpcm_byte_stream_next (lpcm_byte_stream_t * p_byte_stream)
{
// lpcmdec_thread_t * p_lpcmdec = p_byte_stream->info;
/* We are looking for the next TS packet that contains real data,
* and not just a PES header */
}
src/lpcm_decoder/lpcm_decoder_thread.h
View file @ a3c92b8f
......@@ -2,7 +2,7 @@
* lpcm_decoder_thread.h : lpcm decoder thread interface
*****************************************************************************
* Copyright (C) 1999, 2000 VideoLAN
* $Id: lpcm_decoder_thread.h,v 1.5 2001/05/01 04:18:18 sam Exp $
* $Id: lpcm_decoder_thread.h,v 1.6 2001/06/12 13:50:09 henri Exp $
*
* Authors: Samuel Hocevar <sam@zoy.org>
*
......@@ -22,6 +22,8 @@
* Boston, MA 02111-1307, USA.
*****************************************************************************/
#define LPCMDEC_FRAME_SIZE (2008)
/*****************************************************************************
* lpcmdec_thread_t : lpcm decoder thread descriptor
*****************************************************************************/
......@@ -40,20 +42,17 @@ typedef struct lpcmdec_thread_s
int sync_ptr; /* sync ptr from lpcm magic header */
adec_config_t * p_config;
/*
* Decoder properties
*/
lpcmdec_t lpcm_decoder;
/*
* Output properties
*/
aout_fifo_t * p_aout_fifo; /* stores the decompressed audio frames */
/* The bit stream structure handles the PES stream at the bit level */
bit_stream_t bit_stream;
} lpcmdec_thread_t;
/*****************************************************************************
* Prototypes
*****************************************************************************/
vlc_thread_t lpcmdec_CreateThread( adec_config_t * p_config );
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