Commit aa0acfb9 authored by Laurent Aimar's avatar Laurent Aimar
Browse files

* wav: proper seek handling. (wav file readable over http).

parent be878a26
......@@ -2,14 +2,14 @@
* wav.c : wav file input module for vlc
*****************************************************************************
* Copyright (C) 2001 VideoLAN
* $Id: wav.c,v 1.10 2003/01/25 16:58:35 fenrir Exp $
* $Id: wav.c,v 1.11 2003/02/24 09:18:07 fenrir Exp $
* Authors: Laurent Aimar <fenrir@via.ecp.fr>
*
*
* 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
......@@ -52,7 +52,7 @@ vlc_module_begin();
vlc_module_end();
/*****************************************************************************
* Declaration of local function
* Declaration of local function
*****************************************************************************/
#define FREE( p ) if( p ) free( p ); (p) = NULL
......@@ -80,75 +80,100 @@ static uint32_t CreateDWLE( int a, int b, int c, int d )
static off_t TellAbsolute( input_thread_t *p_input )
{
off_t i_pos;
vlc_mutex_lock( &p_input->stream.stream_lock );
i_pos= p_input->stream.p_selected_area->i_tell;
// - ( p_input->p_last_data - p_input->p_current_data );
vlc_mutex_unlock( &p_input->stream.stream_lock );
return( i_pos );
}
static int SeekAbsolute( input_thread_t *p_input,
off_t i_pos)
{
off_t i_filepos;
if( i_pos >= p_input->stream.p_selected_area->i_size )
{
// return( 0 );
}
i_filepos = TellAbsolute( p_input );
if( i_pos != i_filepos )
{
p_input->pf_seek( p_input, i_pos );
input_AccessReinit( p_input );
}
return( 1 );
}
static int SkipBytes( input_thread_t *p_input, int i_skip )
{
return( SeekAbsolute( p_input, TellAbsolute( p_input ) + i_skip ) );
}
/* return 1 if success, 0 if fail */
static int ReadData( input_thread_t *p_input, uint8_t *p_buff, int i_size )
{
data_packet_t *p_data;
int i_read;
int i_count = 0;
if( !i_size )
{
return( 1 );
return( 0 );
}
do
{
int i_read;
i_read = input_SplitBuffer(p_input, &p_data, __MIN( i_size, 1024 ) );
if( i_read <= 0 )
{
return( 0 );
return( i_count );
}
memcpy( p_buff, p_data->p_payload_start, i_read );
input_DeletePacket( p_input->p_method_data, p_data );
p_buff += i_read;
i_size -= i_read;
i_count += i_read;
} while( i_size );
return( 1 );
return( i_count );
}
static int SeekAbsolute( input_thread_t *p_input,
off_t i_pos)
{
int i_skip;
#if 0
if( i_pos >= p_input->stream.p_selected_area->i_size )
{
return( 0 );
}
#endif
i_skip = i_pos - TellAbsolute( p_input );
if( i_skip == 0 )
{
return( VLC_SUCCESS );
}
if( i_skip < 0 && !p_input->stream.b_seekable )
{
return( VLC_EGENERIC );
}
else if( !p_input->stream.b_seekable ||
( i_skip > 0 && i_skip < 1024 && p_input->stream.i_method != INPUT_METHOD_FILE ) )
{
while( i_skip > 0 )
{
uint8_t dummy[1024];
int i_read;
i_read = ReadData( p_input, dummy, __MIN( i_skip, 1024 ) );
if( i_read <= 0 )
{
return( VLC_EGENERIC );
}
i_skip -= i_read;
}
return( VLC_SUCCESS );
}
else
{
input_AccessReinit( p_input );
p_input->pf_seek( p_input, i_pos );
}
}
static int SkipBytes( input_thread_t *p_input, int i_skip )
{
return( SeekAbsolute( p_input, TellAbsolute( p_input ) + i_skip ) );
}
static int ReadPES( input_thread_t *p_input,
pes_packet_t **pp_pes,
static int ReadPES( input_thread_t *p_input,
pes_packet_t **pp_pes,
int i_size )
{
pes_packet_t *p_pes;
......@@ -166,8 +191,8 @@ static int ReadPES( input_thread_t *p_input,
data_packet_t *p_data;
int i_read;
if( (i_read = input_SplitBuffer( p_input,
&p_data,
if( (i_read = input_SplitBuffer( p_input,
&p_data,
__MIN( i_size, 1024 ) ) ) <= 0 )
{
input_DeletePES( p_input->p_method_data, p_pes );
......@@ -223,7 +248,7 @@ static int FindTag( input_thread_t *p_input, uint32_t i_tag )
}
}
static int LoadTag_fmt( input_thread_t *p_input,
static int LoadTag_fmt( input_thread_t *p_input,
demux_sys_t *p_demux )
{
uint8_t *p_peek;
......@@ -279,8 +304,8 @@ static int PCM_GetFrame( input_thread_t *p_input,
i_samples = __MAX( p_wf->nSamplesPerSec / 20, 1 );
*pi_length = (mtime_t)1000000 *
(mtime_t)i_samples /
*pi_length = (mtime_t)1000000 *
(mtime_t)i_samples /
(mtime_t)p_wf->nSamplesPerSec;
i_bytes = i_samples * p_wf->nChannels * ( (p_wf->wBitsPerSample + 7) / 8 );
......@@ -303,7 +328,7 @@ static int MS_ADPCM_GetFrame( input_thread_t *p_input,
{
int i_samples;
i_samples = 2 + 2 * ( p_wf->nBlockAlign -
i_samples = 2 + 2 * ( p_wf->nBlockAlign -
7 * p_wf->nChannels ) / p_wf->nChannels;
*pi_length = (mtime_t)1000000 *
......@@ -320,9 +345,9 @@ static int IMA_ADPCM_GetFrame( input_thread_t *p_input,
{
int i_samples;
i_samples = 2 * ( p_wf->nBlockAlign -
i_samples = 2 * ( p_wf->nBlockAlign -
4 * p_wf->nChannels ) / p_wf->nChannels;
*pi_length = (mtime_t)1000000 *
(mtime_t)i_samples /
(mtime_t)p_wf->nSamplesPerSec;
......@@ -334,13 +359,13 @@ static int IMA_ADPCM_GetFrame( input_thread_t *p_input,
* WAVInit: check file and initializes structures
*****************************************************************************/
static int WAVInit( vlc_object_t * p_this )
{
{
input_thread_t *p_input = (input_thread_t *)p_this;
uint8_t *p_peek;
uint32_t i_size;
demux_sys_t *p_demux;
/* Initialize access plug-in structures. */
......@@ -373,7 +398,7 @@ static int WAVInit( vlc_object_t * p_this )
}
/* create our structure that will contains all data */
if( !( p_input->p_demux_data =
if( !( p_input->p_demux_data =
p_demux = malloc( sizeof( demux_sys_t ) ) ) )
{
msg_Err( p_input, "out of memory" );
......@@ -451,38 +476,38 @@ static int WAVInit( vlc_object_t * p_this )
p_demux->psz_demux = strdup( "" );
break;
default:
msg_Warn( p_input,"unrecognize audio format(0x%x)",
msg_Warn( p_input,"unrecognize audio format(0x%x)",
p_demux->p_wf->wFormatTag );
p_demux->i_fourcc =
VLC_FOURCC( 'm', 's',
p_demux->i_fourcc =
VLC_FOURCC( 'm', 's',
(p_demux->p_wf->wFormatTag >> 8)&0xff,
(p_demux->p_wf->wFormatTag )&0xff);
p_demux->GetFrame = NULL;
p_demux->psz_demux = strdup( "" );
break;
}
if( p_demux->GetFrame )
{
msg_Dbg( p_input, "using internal demux" );
p_input->pf_demux = WAVDemux;
p_input->p_demux_data = p_demux;
/* create one program */
vlc_mutex_lock( &p_input->stream.stream_lock );
if( input_InitStream( p_input, 0 ) == -1)
{
vlc_mutex_unlock( &p_input->stream.stream_lock );
msg_Err( p_input, "cannot init stream" );
// FIXME
// FIXME
return( -1 );
}
if( input_AddProgram( p_input, 0, 0) == NULL )
{
vlc_mutex_unlock( &p_input->stream.stream_lock );
msg_Err( p_input, "cannot add program" );
// FIXME
// FIXME
return( -1 );
}
p_input->stream.p_selected_program = p_input->stream.pp_programs[0];
......@@ -507,7 +532,7 @@ static int WAVInit( vlc_object_t * p_this )
char *psz_sav;
/* call an external demux */
msg_Warn( p_input, "unsupported formattag, using external demux" );
psz_sav = p_input->psz_demux;
p_input->psz_demux = p_demux->psz_demux;
......@@ -517,7 +542,7 @@ static int WAVInit( vlc_object_t * p_this )
if( !p_demux->p_demux )
{
msg_Err( p_input,
msg_Err( p_input,
"cannot get external demux for formattag 0x%x",
p_demux->p_wf->wFormatTag );
FREE( p_demux->psz_demux );
......@@ -534,7 +559,7 @@ static int WAVInit( vlc_object_t * p_this )
}
return( 0 );
return( 0 );
}
/*****************************************************************************
......@@ -547,7 +572,7 @@ static int WAVCallDemux( input_thread_t *p_input )
demux_sys_t *p_demux = p_input->p_demux_data;
int i_status;
char *psz_sav;
/* save context */
psz_sav = p_input->psz_demux;
......@@ -562,7 +587,7 @@ static int WAVCallDemux( input_thread_t *p_input )
/* save (new?) state */
p_demux->pf_demux = p_input->pf_demux;
p_demux->p_demux_data = p_input->p_demux_data;
/* switch back */
p_input->psz_demux = psz_sav;
p_input->pf_demux = WAVCallDemux;
......
......@@ -2,14 +2,14 @@
* wav.h : wav file input module for vlc
*****************************************************************************
* Copyright (C) 2001 VideoLAN
* $Id: wav.h,v 1.2 2002/11/28 16:32:29 fenrir Exp $
* $Id: wav.h,v 1.3 2003/02/24 09:18:07 fenrir Exp $
* Authors: Laurent Aimar <fenrir@via.ecp.fr>
*
*
* 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
......@@ -30,21 +30,21 @@ struct demux_sys_t
mtime_t i_pcr;
mtime_t i_time;
vlc_fourcc_t i_fourcc;
es_descriptor_t *p_es;
int i_wf; /* taille de p_wf */
WAVEFORMATEX *p_wf;
off_t i_data_pos;
u64 i_data_size;
uint64_t i_data_size;
/* Two case:
- we have an internal demux(pcm)
- we use an external demux(mp3, a52 ..)
*/
/* module for external demux */
module_t *p_demux;
int (*pf_demux)( input_thread_t * );
......@@ -52,11 +52,10 @@ struct demux_sys_t
char *psz_demux;
/* getframe for internal demux */
int (*GetFrame)( input_thread_t *p_input,
int (*GetFrame)( input_thread_t *p_input,
WAVEFORMATEX *p_wf,
pes_packet_t **pp_pes,
mtime_t *pi_length );
};
......
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