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Commit e2f255de authored by Sigmund Augdal Helberg's avatar Sigmund Augdal Helberg
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Turned the scope plugin into a audio filter that can be inserted with 

--audio-filter. It still seems to have many problems, so I will not eneable
it yet.
parent 0596bf59
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Showing with 59 additions and 121 deletions
modules/visualization/scope/scope.c
View file @ e2f255de
......@@ -2,7 +2,7 @@
* scope.c : Scope effect module
*****************************************************************************
* Copyright (C) 2002 VideoLAN
* $Id: scope.c,v 1.2 2002/08/12 09:34:15 sam Exp $
* $Id: scope.c,v 1.3 2003/08/18 14:57:09 sigmunau Exp $
*
* Authors: Samuel Hocevar <sam@zoy.org>
*
......@@ -31,6 +31,7 @@
#include <vlc/vlc.h>
#include <vlc/aout.h>
#include <vlc/vout.h>
#include "aout_internal.h"
#define SCOPE_WIDTH 320
#define SCOPE_HEIGHT 240
......@@ -42,13 +43,11 @@
* This structure is part of the audio output thread descriptor.
* It describes some scope specific variables.
*****************************************************************************/
struct aout_sys_t
typedef struct aout_filter_sys_t
{
aout_fifo_t *p_aout_fifo;
aout_thread_t *p_aout;
vout_thread_t *p_vout;
};
} aout_filter_sys_t;
/*****************************************************************************
* Local prototypes
......@@ -56,16 +55,15 @@ struct aout_sys_t
static int Open ( vlc_object_t * );
static void Close ( vlc_object_t * );
static int SetFormat ( aout_thread_t * );
static int GetBufInfo ( aout_thread_t *, int );
static void Play ( aout_thread_t *, byte_t *, int );
static void DoWork ( aout_instance_t *, aout_filter_t *, aout_buffer_t *,
aout_buffer_t * );
/*****************************************************************************
* Module descriptor
*****************************************************************************/
vlc_module_begin();
set_description( _("scope effect") );
set_capability( "audio output", 0 );
set_capability( "audio filter", 0 );
set_callbacks( Open, Close );
add_shortcut( "scope" );
vlc_module_end();
......@@ -75,35 +73,37 @@ vlc_module_end();
*****************************************************************************/
static int Open( vlc_object_t *p_this )
{
aout_thread_t *p_aout = (aout_thread_t *)p_this;
char *psz_method;
aout_filter_t *p_aout = (aout_filter_t *)p_this;
aout_filter_t * p_filter = (aout_filter_t *)p_this;
/* Allocate structure */
p_aout->p_sys = malloc( sizeof( aout_sys_t ) );
if( p_aout->p_sys == NULL )
if ( p_filter->input.i_format != VLC_FOURCC('f','l','3','2') //AOUT_FMT_U16_NE
|| p_filter->output.i_format != VLC_FOURCC('f','l','3','2') )//AOUT_FMT_U16_NE )
{
msg_Err( p_aout, "out of memory" );
msg_Warn( p_filter, "Bad input or output format" );
return -1;
}
psz_method = config_GetPsz( p_aout, "aout" );
if( psz_method )
if ( !AOUT_FMTS_SIMILAR( &p_filter->input, &p_filter->output ) )
{
if( !*psz_method )
{
free( psz_method );
return -1;
}
msg_Warn( p_filter, "input and output formats are not similar" );
return -1;
}
else
p_filter->pf_do_work = DoWork;
p_filter->b_in_place = 1;
/* Allocate structure */
p_aout->p_sys = malloc( sizeof( aout_filter_sys_t ) );
if( p_aout->p_sys == NULL )
{
msg_Err( p_aout, "out of memory" );
return -1;
}
/* Open video output */
p_aout->p_sys->p_vout =
vout_CreateThread( p_aout, SCOPE_WIDTH, SCOPE_HEIGHT,
VLC_FOURCC('I','4','2','0'), SCOPE_ASPECT );
vout_Create( p_aout, SCOPE_WIDTH, SCOPE_HEIGHT,
VLC_FOURCC('I','4','2','0'), SCOPE_ASPECT );
if( p_aout->p_sys->p_vout == NULL )
{
......@@ -112,110 +112,44 @@ static int Open( vlc_object_t *p_this )
return -1;
}
/* Open audio output */
p_aout->p_sys->p_aout = vlc_object_create( p_aout, VLC_OBJECT_AOUT );
p_aout->p_sys->p_aout->i_format = p_aout->i_format;
p_aout->p_sys->p_aout->i_rate = p_aout->i_rate;
p_aout->p_sys->p_aout->i_channels = p_aout->i_channels;
p_aout->p_sys->p_aout->p_module =
module_Need( p_aout->p_sys->p_aout, "audio output", "" );
if( p_aout->p_sys->p_aout->p_module == NULL )
{
msg_Err( p_aout, "no suitable aout module" );
vlc_object_destroy( p_aout->p_sys->p_aout );
vout_DestroyThread( p_aout->p_sys->p_vout );
free( p_aout->p_sys );
return -1;
}
vlc_object_attach( p_aout->p_sys->p_aout, p_aout );
p_aout->pf_setformat = SetFormat;
p_aout->pf_getbufinfo = GetBufInfo;
p_aout->pf_play = Play;
return( 0 );
}
/*****************************************************************************
* SetFormat: set the output format
*****************************************************************************/
static int SetFormat( aout_thread_t *p_aout )
{
int i_ret;
/* Force the output method */
p_aout->p_sys->p_aout->i_format = p_aout->i_format;
p_aout->p_sys->p_aout->i_channels = p_aout->i_channels;
p_aout->p_sys->p_aout->i_rate = p_aout->i_rate;
/*
* Initialize audio device
*/
i_ret = p_aout->p_sys->p_aout->pf_setformat( p_aout->p_sys->p_aout );
if( i_ret )
{
return i_ret;
}
if( p_aout->p_sys->p_aout->i_format != p_aout->i_format
|| p_aout->p_sys->p_aout->i_channels != p_aout->i_channels )
{
msg_Err( p_aout, "plugin is not very cooperative" );
return 0;
}
p_aout->i_channels = p_aout->p_sys->p_aout->i_channels;
p_aout->i_format = p_aout->p_sys->p_aout->i_format;
p_aout->i_rate = p_aout->p_sys->p_aout->i_rate;
return 0;
}
/*****************************************************************************
* GetBufInfo: buffer status query
*****************************************************************************/
static int GetBufInfo( aout_thread_t *p_aout, int i_buffer_limit )
{
return p_aout->p_sys->p_aout->pf_getbufinfo( p_aout->p_sys->p_aout,
i_buffer_limit );
}
/*****************************************************************************
* Play: play a sound samples buffer
*****************************************************************************
* This function writes a buffer of i_length bytes in the socket
*****************************************************************************/
static void Play( aout_thread_t *p_aout, byte_t *p_buffer, int i_size )
static void DoWork( aout_instance_t * p_aout, aout_filter_t * p_filter,
aout_buffer_t * p_in_buf, aout_buffer_t * p_out_buf )
{
picture_t *p_outpic;
int i_index, i_image;
u8 *ppp_area[2][3];
u16 *p_sample;
/* Play the real sound */
p_aout->p_sys->p_aout->pf_play( p_aout->p_sys->p_aout, p_buffer, i_size );
int i_size = p_in_buf->i_size;
byte_t *p_buffer = p_in_buf->p_buffer;
uint8_t *ppp_area[2][3];
float *p_sample;
p_out_buf->i_nb_samples = p_in_buf->i_nb_samples;
p_out_buf->i_nb_bytes = p_in_buf->i_nb_bytes;
for( i_image = 0; (i_image + 1) * SCOPE_WIDTH * 8 < i_size ; i_image++ )
{
/* Don't stay here forever */
if( mdate() >= p_aout->date - 10000 )
if( mdate() >= p_in_buf->start_date - 10000 )
{
break;
}
/* This is a new frame. Get a structure from the video_output. */
while( ( p_outpic = vout_CreatePicture( p_aout->p_sys->p_vout, 0, 0, 0 ) )
while( ( p_outpic = vout_CreatePicture( p_filter->p_sys->p_vout, 0, 0, 0 ) )
== NULL )
{
if( p_aout->b_die )
{
return;
}
msleep( VOUT_OUTMEM_SLEEP );
msleep( 1 );/* Not sleeping here makes us use 100% cpu,
* sleeping too much absolutly kills audio
* quality. 1 seems to be a good value */
}
/* Blank the picture */
......@@ -233,21 +167,26 @@ static void Play( aout_thread_t *p_aout, byte_t *p_buffer, int i_size )
{
ppp_area[i_index][j] =
p_outpic->p[j].p_pixels + i_index * p_outpic->p[j].i_lines
/ p_aout->i_channels * p_outpic->p[j].i_pitch;
/ p_filter->input.i_original_channels * p_outpic->p[j].i_pitch;
}
}
for( i_index = 0, p_sample = (u16*)p_buffer;
for( i_index = 0, p_sample = (float*)p_buffer;
i_index < SCOPE_WIDTH;
i_index++ )
{
int i;
u8 i_value;
int i_tmp_value;
uint8_t i_value;
for( i = 0 ; i < 2 ; i++ )
{
/* Left channel */
i_value = *p_sample++ / 256 + 128;
if ( *p_sample >= 1.0 ) i_tmp_value = 32767;
else if ( *p_sample < -1.0 ) i_tmp_value = -32768;
else i_tmp_value = *p_sample * 32768.0;
p_sample++;
i_value = i_tmp_value / 256 + 128;
*(ppp_area[0][0]
+ p_outpic->p[0].i_pitch * i_index / SCOPE_WIDTH
+ p_outpic->p[0].i_lines * i_value / 512
......@@ -258,7 +197,11 @@ static void Play( aout_thread_t *p_aout, byte_t *p_buffer, int i_size )
* p_outpic->p[1].i_pitch) = 0xff;
/* Right channel */
i_value = *p_sample++ / 256 + 128;
if ( *p_sample >= 1.0 ) i_tmp_value = 32767;
else if ( *p_sample < -1.0 ) i_tmp_value = -32768;
else i_tmp_value = *p_sample * 32768.0;
p_sample++;
i_value = i_tmp_value / 256 + 128;
*(ppp_area[1][0]
+ p_outpic->p[0].i_pitch * i_index / SCOPE_WIDTH
+ p_outpic->p[0].i_lines * i_value / 512
......@@ -271,11 +214,11 @@ static void Play( aout_thread_t *p_aout, byte_t *p_buffer, int i_size )
}
/* Display the picture - FIXME: find a better date :-) */
vout_DatePicture( p_aout->p_sys->p_vout, p_outpic,
p_aout->date + i_image * 20000 );
vout_DisplayPicture( p_aout->p_sys->p_vout, p_outpic );
vout_DatePicture( p_filter->p_sys->p_vout, p_outpic,
p_in_buf->start_date + i_image * 20000 );
vout_DisplayPicture( p_filter->p_sys->p_vout, p_outpic );
p_buffer += SCOPE_WIDTH * 4;
p_buffer += SCOPE_WIDTH * 8;
}
}
......@@ -284,16 +227,11 @@ static void Play( aout_thread_t *p_aout, byte_t *p_buffer, int i_size )
*****************************************************************************/
static void Close( vlc_object_t *p_this )
{
aout_thread_t *p_aout = (aout_thread_t *)p_this;
/* Kill audio output */
module_Unneed( p_aout->p_sys->p_aout, p_aout->p_sys->p_aout->p_module );
vlc_object_detach( p_aout->p_sys->p_aout );
vlc_object_destroy( p_aout->p_sys->p_aout );
aout_filter_t * p_filter = (aout_filter_t *)p_this;
/* Kill video output */
vout_DestroyThread( p_aout->p_sys->p_vout );
vout_Destroy( p_filter->p_sys->p_vout );
free( p_aout->p_sys );
free( p_filter->p_sys );
}
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