vdr/xine-lib-vdr/src/post/visualizations Makefile.am Makefile.in fft.c fft.h fftgraph.c fftscope.c fooviz.c oscope.c visualizations.c visualizations.h
Darren Salt
pkg-vdr-dvb-changes@lists.alioth.debian.org
Mon, 04 Apr 2005 22:38:25 +0000
Update of /cvsroot/pkg-vdr-dvb/vdr/xine-lib-vdr/src/post/visualizations
In directory haydn:/tmp/cvs-serv13100/src/post/visualizations
Added Files:
Makefile.am Makefile.in fft.c fft.h fftgraph.c fftscope.c
fooviz.c oscope.c visualizations.c visualizations.h
Log Message:
Import of VDR-patched xine-lib.
--- NEW FILE: fftscope.c ---
/*
* Copyright (C) 2000-2003 the xine project
*
* This file is part of xine, a free video player.
*
* xine 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.
*
* xine 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
*
* Fast Fourier Transform Visualization Post Plugin For xine
* by Mike Melanson (melanson@pcisys.net)
*
* FFT code by Steve Haehnichen, originally licensed under GPL v1
*
* $Id: fftscope.c,v 1.1 2005/04/04 22:38:22 dsalt-guest Exp $
*
*/
#include <stdio.h>
#include <math.h>
#include "xine_internal.h"
#include "xineutils.h"
#include "post.h"
#include "bswap.h"
#include "visualizations.h"
#include "fft.h"
#define FPS 20
#define FFT_WIDTH 512
#define FFT_HEIGHT 256
#define NUMSAMPLES 512
#define MAXCHANNELS 6
#define FFT_BITS 9
typedef struct post_plugin_fftscope_s post_plugin_fftscope_t;
typedef struct post_class_fftscope_s post_class_fftscope_t;
struct post_class_fftscope_s {
post_class_t post_class;
xine_t *xine;
};
struct post_plugin_fftscope_s {
post_plugin_t post;
/* private data */
xine_video_port_t *vo_port;
post_out_t video_output;
/* private metronom for syncing the video */
metronom_t *metronom;
double ratio;
int data_idx;
complex_t wave[MAXCHANNELS][NUMSAMPLES];
int amp_max[MAXCHANNELS][NUMSAMPLES / 2];
uint8_t amp_max_y[MAXCHANNELS][NUMSAMPLES / 2];
uint8_t amp_max_u[MAXCHANNELS][NUMSAMPLES / 2];
uint8_t amp_max_v[MAXCHANNELS][NUMSAMPLES / 2];
int amp_age[MAXCHANNELS][NUMSAMPLES / 2];
audio_buffer_t buf; /* dummy buffer just to hold a copy of audio data */
int channels;
int sample_counter;
int samples_per_frame;
unsigned char u_current;
unsigned char v_current;
int u_direction;
int v_direction;
fft_t *fft;
};
/*
* Fade out a YUV pixel
*/
static void fade_out_yuv(uint8_t *y, uint8_t *u, uint8_t *v, float factor) {
*y = (uint8_t)(factor * (*y - 16)) + 16;
*u = (uint8_t)(factor * (*u - 128)) + 128;
*v = (uint8_t)(factor * (*v - 128)) + 128;
}
static void draw_fftscope(post_plugin_fftscope_t *this, vo_frame_t *frame) {
int i, j, c;
int map_ptr, map_ptr_bkp;
int amp_int, amp_max, x;
float amp_float;
uint32_t yuy2_pair, yuy2_pair_max, yuy2_white;
int c_delta;
/* clear the YUY2 map */
for (i = 0; i < FFT_WIDTH * FFT_HEIGHT / 2; i++)
((uint32_t *)frame->base[0])[i] = be2me_32(0x00900080);
/* get a random delta between 1..6 */
c_delta = (rand() % 6) + 1;
/* apply it to the current U value */
if (this->u_direction) {
if (this->u_current + c_delta > 255) {
this->u_current = 255;
this->u_direction = 0;
} else
this->u_current += c_delta;
} else {
if (this->u_current - c_delta < 0) {
this->u_current = 0;
this->u_direction = 1;
} else
this->u_current -= c_delta;
}
/* get a random delta between 1..3 */
c_delta = (rand() % 3) + 1;
/* apply it to the current V value */
if (this->v_direction) {
if (this->v_current + c_delta > 255) {
this->v_current = 255;
this->v_direction = 0;
} else
this->v_current += c_delta;
} else {
if (this->v_current - c_delta < 0) {
this->v_current = 0;
this->v_direction = 1;
} else
this->v_current -= c_delta;
}
yuy2_pair = be2me_32(
(0x7F << 24) |
(this->u_current << 16) |
(0x7F << 8) |
this->v_current);
yuy2_white = be2me_32(
(0xFF << 24) |
(0x80 << 16) |
(0xFF << 8) |
0x80);
for (c = 0; c < this->channels; c++){
/* perform FFT for channel data */
fft_window(this->fft, this->wave[c]);
fft_scale(this->wave[c], this->fft->bits);
fft_compute(this->fft, this->wave[c]);
/* plot the FFT points for the channel */
for (i = 0; i < NUMSAMPLES / 2; i++) {
map_ptr = ((FFT_HEIGHT * (c+1) / this->channels -1 ) * FFT_WIDTH + i * 2) / 2;
map_ptr_bkp = map_ptr;
amp_float = fft_amp(i, this->wave[c], FFT_BITS);
if (amp_float == 0)
amp_int = 0;
else
amp_int = (int)((60/this->channels) * log10(amp_float));
if (amp_int > 255/this->channels)
amp_int = 255/this->channels;
if (amp_int < 0)
amp_int = 0;
for (j = 0; j < amp_int; j++, map_ptr -= FFT_WIDTH / 2)
((uint32_t *)frame->base[0])[map_ptr] = yuy2_pair;
/* amp max */
yuy2_pair_max = be2me_32(
(this->amp_max_y[c][i] << 24) |
(this->amp_max_u[c][i] << 16) |
(this->amp_max_y[c][i] << 8) |
this->amp_max_v[c][i]);
/* gravity */
this->amp_age[c][i]++;
if (this->amp_age[c][i] < 10) {
amp_max = this->amp_max[c][i];
} else {
x = this->amp_age[c][i] - 10;
amp_max = this->amp_max[c][i] - x * x;
}
/* new peak ? */
if (amp_int > amp_max) {
this->amp_max[c][i] = amp_int;
this->amp_age[c][i] = 0;
this->amp_max_y[c][i] = 0x7f;
this->amp_max_u[c][i] = this->u_current;
this->amp_max_v[c][i] = this->v_current;
fade_out_yuv(&this->amp_max_y[c][i], &this->amp_max_u[c][i],
&this->amp_max_v[c][i], 0.5);
amp_max = amp_int;
} else {
fade_out_yuv(&this->amp_max_y[c][i], &this->amp_max_u[c][i],
&this->amp_max_v[c][i], 0.95);
}
/* draw peaks */
for (j = amp_int; j < (amp_max - 1); j++, map_ptr -= FFT_WIDTH / 2)
((uint32_t *)frame->base[0])[map_ptr] = yuy2_pair_max;
/* top */
((uint32_t *)frame->base[0])[map_ptr] = yuy2_white;
/* persistence of top */
if (this->amp_age[c][i] >= 10) {
x = this->amp_age[c][i] - 10;
x = 0x5f - x;
if (x < 0x10) x = 0x10;
((uint32_t *)frame->base[0])[map_ptr_bkp -
this->amp_max[c][i] * (FFT_WIDTH / 2)] =
be2me_32((x << 24) | (0x80 << 16) | (x << 8) | 0x80);
}
}
}
/* top line */
for (map_ptr = 0; map_ptr < FFT_WIDTH / 2; map_ptr++)
((uint32_t *)frame->base[0])[map_ptr] = yuy2_white;
/* lines under each channel */
for (c = 0; c < this->channels; c++){
for (i = 0, map_ptr = ((FFT_HEIGHT * (c+1) / this->channels -1 ) * FFT_WIDTH) / 2;
i < FFT_WIDTH / 2; i++, map_ptr++)
((uint32_t *)frame->base[0])[map_ptr] = yuy2_white;
}
}
/**************************************************************************
* xine video post plugin functions
*************************************************************************/
static int fftscope_rewire_video(xine_post_out_t *output_gen, void *data)
{
post_out_t *output = (post_out_t *)output_gen;
xine_video_port_t *old_port = *(xine_video_port_t **)output_gen->data;
xine_video_port_t *new_port = (xine_video_port_t *)data;
post_plugin_fftscope_t *this = (post_plugin_fftscope_t *)output->post;
if (!data)
return 0;
/* register our stream at the new output port */
old_port->close(old_port, XINE_ANON_STREAM);
new_port->open(new_port, XINE_ANON_STREAM);
/* reconnect ourselves */
this->vo_port = new_port;
return 1;
}
static int fftscope_port_open(xine_audio_port_t *port_gen, xine_stream_t *stream,
uint32_t bits, uint32_t rate, int mode) {
post_audio_port_t *port = (post_audio_port_t *)port_gen;
post_plugin_fftscope_t *this = (post_plugin_fftscope_t *)port->post;
int c, i;
_x_post_rewire(&this->post);
_x_post_inc_usage(port);
port->stream = stream;
port->bits = bits;
port->rate = rate;
port->mode = mode;
this->ratio = (double)FFT_WIDTH/(double)FFT_HEIGHT;
this->channels = _x_ao_mode2channels(mode);
if( this->channels > MAXCHANNELS )
this->channels = MAXCHANNELS;
this->samples_per_frame = rate / FPS;
this->data_idx = 0;
this->fft = fft_new(FFT_BITS);
this->vo_port->open(this->vo_port, XINE_ANON_STREAM);
this->metronom->set_master(this->metronom, stream->metronom);
for (c = 0; c < this->channels; c++) {
for (i = 0; i < (NUMSAMPLES / 2); i++) {
this->amp_max[c][i] = 0;
this->amp_max_y[c][i] = 0;
this->amp_max_u[c][i] = 0;
this->amp_max_v[c][i] = 0;
this->amp_age[c][i] = 0;
}
}
return port->original_port->open(port->original_port, stream, bits, rate, mode );
}
static void fftscope_port_close(xine_audio_port_t *port_gen, xine_stream_t *stream ) {
post_audio_port_t *port = (post_audio_port_t *)port_gen;
post_plugin_fftscope_t *this = (post_plugin_fftscope_t *)port->post;
port->stream = NULL;
fft_dispose(this->fft);
this->fft = NULL;
this->vo_port->close(this->vo_port, XINE_ANON_STREAM);
this->metronom->set_master(this->metronom, NULL);
port->original_port->close(port->original_port, stream );
_x_post_dec_usage(port);
}
static void fftscope_port_put_buffer (xine_audio_port_t *port_gen,
audio_buffer_t *buf, xine_stream_t *stream) {
post_audio_port_t *port = (post_audio_port_t *)port_gen;
post_plugin_fftscope_t *this = (post_plugin_fftscope_t *)port->post;
vo_frame_t *frame;
int16_t *data;
int8_t *data8;
int samples_used = 0;
int64_t pts = buf->vpts;
int i, c;
/* make a copy of buf data for private use */
if( this->buf.mem_size < buf->mem_size ) {
this->buf.mem = realloc(this->buf.mem, buf->mem_size);
this->buf.mem_size = buf->mem_size;
}
memcpy(this->buf.mem, buf->mem,
buf->num_frames*this->channels*((port->bits == 8)?1:2));
this->buf.num_frames = buf->num_frames;
/* pass data to original port */
port->original_port->put_buffer(port->original_port, buf, stream );
/* we must not use original data anymore, it should have already being moved
* to the fifo of free audio buffers. just use our private copy instead.
*/
buf = &this->buf;
this->sample_counter += buf->num_frames;
do {
if( port->bits == 8 ) {
data8 = (int8_t *)buf->mem;
data8 += samples_used * this->channels;
/* scale 8 bit data to 16 bits and convert to signed as well */
for( i = 0; i < buf->num_frames && this->data_idx < NUMSAMPLES;
i++, this->data_idx++, data8 += this->channels ) {
for( c = 0; c < this->channels; c++){
this->wave[c][this->data_idx].re = (double)(data8[c] << 8) - 0x8000;
this->wave[c][this->data_idx].im = 0;
}
}
} else {
data = buf->mem;
data += samples_used * this->channels;
for( i = 0; i < buf->num_frames && this->data_idx < NUMSAMPLES;
i++, this->data_idx++, data += this->channels ) {
for( c = 0; c < this->channels; c++){
this->wave[c][this->data_idx].re = (double)data[c];
this->wave[c][this->data_idx].im = 0;
}
}
}
if( this->sample_counter >= this->samples_per_frame &&
this->data_idx == NUMSAMPLES ) {
this->data_idx = 0;
samples_used += this->samples_per_frame;
frame = this->vo_port->get_frame (this->vo_port, FFT_WIDTH, FFT_HEIGHT,
this->ratio, XINE_IMGFMT_YUY2,
VO_BOTH_FIELDS);
frame->extra_info->invalid = 1;
frame->bad_frame = 0;
frame->duration = 90000 * this->samples_per_frame / port->rate;
frame->pts = pts;
this->metronom->got_video_frame(this->metronom, frame);
this->sample_counter -= this->samples_per_frame;
if( this->fft )
draw_fftscope(this, frame);
else
frame->bad_frame = 1;
frame->draw(frame, XINE_ANON_STREAM);
frame->free(frame);
}
} while( this->sample_counter >= this->samples_per_frame );
}
static void fftscope_dispose(post_plugin_t *this_gen)
{
post_plugin_fftscope_t *this = (post_plugin_fftscope_t *)this_gen;
if (_x_post_dispose(this_gen)) {
this->metronom->exit(this->metronom);
if(this->buf.mem)
free(this->buf.mem);
free(this);
}
}
/* plugin class functions */
static post_plugin_t *fftscope_open_plugin(post_class_t *class_gen, int inputs,
xine_audio_port_t **audio_target,
xine_video_port_t **video_target)
{
post_plugin_fftscope_t *this = (post_plugin_fftscope_t *)xine_xmalloc(sizeof(post_plugin_fftscope_t));
post_class_fftscope_t *class = (post_class_fftscope_t *)class_gen;
post_in_t *input;
post_out_t *output;
post_out_t *outputv;
post_audio_port_t *port;
if (!this || !video_target || !video_target[0] || !audio_target || !audio_target[0] ) {
free(this);
return NULL;
}
_x_post_init(&this->post, 1, 0);
this->metronom = _x_metronom_init(1, 0, class->xine);
this->vo_port = video_target[0];
port = _x_post_intercept_audio_port(&this->post, audio_target[0], &input, &output);
port->new_port.open = fftscope_port_open;
port->new_port.close = fftscope_port_close;
port->new_port.put_buffer = fftscope_port_put_buffer;
outputv = &this->video_output;
outputv->xine_out.name = "generated video";
outputv->xine_out.type = XINE_POST_DATA_VIDEO;
outputv->xine_out.data = (xine_video_port_t **)&this->vo_port;
outputv->xine_out.rewire = fftscope_rewire_video;
outputv->post = &this->post;
xine_list_append_content(this->post.output, outputv);
this->post.xine_post.audio_input[0] = &port->new_port;
this->post.dispose = fftscope_dispose;
return &this->post;
}
static char *fftscope_get_identifier(post_class_t *class_gen)
{
return "FFT Scope";
}
static char *fftscope_get_description(post_class_t *class_gen)
{
return "FFT Scope";
}
static void fftscope_class_dispose(post_class_t *class_gen)
{
free(class_gen);
}
/* plugin class initialization function */
void *fftscope_init_plugin(xine_t *xine, void *data)
{
post_class_fftscope_t *class = (post_class_fftscope_t *)malloc(sizeof(post_class_fftscope_t));
if (!class)
return NULL;
class->post_class.open_plugin = fftscope_open_plugin;
class->post_class.get_identifier = fftscope_get_identifier;
class->post_class.get_description = fftscope_get_description;
class->post_class.dispose = fftscope_class_dispose;
class->xine = xine;
return &class->post_class;
}
--- NEW FILE: fooviz.c ---
/*
* Copyright (C) 2000-2004 the xine project
*
* This file is part of xine, a free video player.
*
* xine 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.
*
* xine 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
*
* Reference Visualization Post Plugin For xine
* by Mike Melanson (melanson@pcisys.net)
* This is an example/template for the xine visualization post plugin
* process. It simply paints the screen a solid color and rotates through
* colors on each iteration.
*
* $Id: fooviz.c,v 1.1 2005/04/04 22:38:22 dsalt-guest Exp $
*
*/
#include <stdio.h>
#include "xine_internal.h"
#include "xineutils.h"
#include "post.h"
#define FPS 20
#define FOO_WIDTH 320
#define FOO_HEIGHT 240
#define NUMSAMPLES 512
typedef struct post_plugin_fooviz_s post_plugin_fooviz_t;
typedef struct post_class_fooviz_s post_class_fooviz_t;
struct post_class_fooviz_s {
post_class_t post_class;
xine_t *xine;
};
struct post_plugin_fooviz_s {
post_plugin_t post;
/* private data */
xine_video_port_t *vo_port;
post_out_t video_output;
/* private metronom for syncing the video */
metronom_t *metronom;
double ratio;
int data_idx;
short data [2][NUMSAMPLES];
audio_buffer_t buf; /* dummy buffer just to hold a copy of audio data */
int channels;
int sample_counter;
int samples_per_frame;
/* specific to fooviz */
unsigned char current_yuv_byte;
};
/**************************************************************************
* fooviz specific decode functions
*************************************************************************/
/**************************************************************************
* xine video post plugin functions
*************************************************************************/
static int fooviz_rewire_video(xine_post_out_t *output_gen, void *data)
{
post_out_t *output = (post_out_t *)output_gen;
xine_video_port_t *old_port = *(xine_video_port_t **)output_gen->data;
xine_video_port_t *new_port = (xine_video_port_t *)data;
post_plugin_fooviz_t *this = (post_plugin_fooviz_t *)output->post;
if (!data)
return 0;
/* register our stream at the new output port */
old_port->close(old_port, XINE_ANON_STREAM);
new_port->open(new_port, XINE_ANON_STREAM);
/* reconnect ourselves */
this->vo_port = new_port;
return 1;
}
static int fooviz_port_open(xine_audio_port_t *port_gen, xine_stream_t *stream,
uint32_t bits, uint32_t rate, int mode) {
post_audio_port_t *port = (post_audio_port_t *)port_gen;
post_plugin_fooviz_t *this = (post_plugin_fooviz_t *)port->post;
_x_post_rewire(&this->post);
_x_post_inc_usage(port);
port->stream = stream;
port->bits = bits;
port->rate = rate;
port->mode = mode;
this->ratio = (double)FOO_WIDTH/(double)FOO_HEIGHT;
this->channels = _x_ao_mode2channels(mode);
this->samples_per_frame = rate / FPS;
this->data_idx = 0;
this->vo_port->open(this->vo_port, XINE_ANON_STREAM);
this->metronom->set_master(this->metronom, stream->metronom);
return port->original_port->open(port->original_port, stream, bits, rate, mode );
}
static void fooviz_port_close(xine_audio_port_t *port_gen, xine_stream_t *stream ) {
post_audio_port_t *port = (post_audio_port_t *)port_gen;
post_plugin_fooviz_t *this = (post_plugin_fooviz_t *)port->post;
port->stream = NULL;
this->vo_port->close(this->vo_port, XINE_ANON_STREAM);
this->metronom->set_master(this->metronom, NULL);
port->original_port->close(port->original_port, stream );
_x_post_dec_usage(port);
}
static void fooviz_port_put_buffer (xine_audio_port_t *port_gen,
audio_buffer_t *buf, xine_stream_t *stream) {
post_audio_port_t *port = (post_audio_port_t *)port_gen;
post_plugin_fooviz_t *this = (post_plugin_fooviz_t *)port->post;
vo_frame_t *frame;
int16_t *data;
int8_t *data8;
int samples_used = 0;
int64_t pts = buf->vpts;
int i, j;
/* make a copy of buf data for private use */
if( this->buf.mem_size < buf->mem_size ) {
this->buf.mem = realloc(this->buf.mem, buf->mem_size);
this->buf.mem_size = buf->mem_size;
}
memcpy(this->buf.mem, buf->mem,
buf->num_frames*this->channels*((port->bits == 8)?1:2));
this->buf.num_frames = buf->num_frames;
/* pass data to original port */
port->original_port->put_buffer(port->original_port, buf, stream );
/* we must not use original data anymore, it should have already being moved
* to the fifo of free audio buffers. just use our private copy instead.
*/
buf = &this->buf;
this->sample_counter += buf->num_frames;
j = (this->channels >= 2) ? 1 : 0;
do {
if( port->bits == 8 ) {
data8 = (int8_t *)buf->mem;
data8 += samples_used * this->channels;
/* scale 8 bit data to 16 bits and convert to signed as well */
for( i = 0; i < buf->num_frames && this->data_idx < NUMSAMPLES;
i++, this->data_idx++, data8 += this->channels ) {
this->data[0][this->data_idx] = ((int16_t)data8[0] << 8) - 0x8000;
this->data[1][this->data_idx] = ((int16_t)data8[j] << 8) - 0x8000;
}
} else {
data = buf->mem;
data += samples_used * this->channels;
for( i = 0; i < buf->num_frames && this->data_idx < NUMSAMPLES;
i++, this->data_idx++, data += this->channels ) {
this->data[0][this->data_idx] = data[0];
this->data[1][this->data_idx] = data[j];
}
}
if( this->sample_counter >= this->samples_per_frame &&
this->data_idx == NUMSAMPLES ) {
this->data_idx = 0;
samples_used += this->samples_per_frame;
frame = this->vo_port->get_frame (this->vo_port, FOO_WIDTH, FOO_HEIGHT,
this->ratio, XINE_IMGFMT_YUY2,
VO_BOTH_FIELDS);
frame->extra_info->invalid = 1;
frame->bad_frame = 0;
frame->duration = 90000 * this->samples_per_frame / port->rate;
frame->pts = pts;
this->metronom->got_video_frame(this->metronom, frame);
this->sample_counter -= this->samples_per_frame;
memset(frame->base[0], this->current_yuv_byte, FOO_WIDTH * FOO_HEIGHT * 2);
this->current_yuv_byte += 3;
frame->draw(frame, XINE_ANON_STREAM);
frame->free(frame);
}
} while( this->sample_counter >= this->samples_per_frame );
}
static void fooviz_dispose(post_plugin_t *this_gen)
{
post_plugin_fooviz_t *this = (post_plugin_fooviz_t *)this_gen;
if (_x_post_dispose(this_gen)) {
this->metronom->exit(this->metronom);
if(this->buf.mem)
free(this->buf.mem);
free(this);
}
}
/* plugin class functions */
static post_plugin_t *fooviz_open_plugin(post_class_t *class_gen, int inputs,
xine_audio_port_t **audio_target,
xine_video_port_t **video_target)
{
post_class_fooviz_t *class = (post_class_fooviz_t *)class_gen;
post_plugin_fooviz_t *this = (post_plugin_fooviz_t *)xine_xmalloc(sizeof(post_plugin_fooviz_t));
post_in_t *input;
post_out_t *output;
post_out_t *outputv;
post_audio_port_t *port;
if (!this || !video_target || !video_target[0] || !audio_target || !audio_target[0] ) {
free(this);
return NULL;
}
_x_post_init(&this->post, 1, 0);
this->metronom = _x_metronom_init(1, 0, class->xine);
this->vo_port = video_target[0];
port = _x_post_intercept_audio_port(&this->post, audio_target[0], &input, &output);
port->new_port.open = fooviz_port_open;
port->new_port.close = fooviz_port_close;
port->new_port.put_buffer = fooviz_port_put_buffer;
outputv = &this->video_output;
outputv->xine_out.name = "generated video";
outputv->xine_out.type = XINE_POST_DATA_VIDEO;
outputv->xine_out.data = (xine_video_port_t **)&this->vo_port;
outputv->xine_out.rewire = fooviz_rewire_video;
outputv->post = &this->post;
xine_list_append_content(this->post.output, outputv);
this->post.xine_post.audio_input[0] = &port->new_port;
this->post.dispose = fooviz_dispose;
return &this->post;
}
static char *fooviz_get_identifier(post_class_t *class_gen)
{
return "fooviz";
}
static char *fooviz_get_description(post_class_t *class_gen)
{
return "fooviz";
}
static void fooviz_class_dispose(post_class_t *class_gen)
{
free(class_gen);
}
/* plugin class initialization function */
static void *fooviz_init_plugin(xine_t *xine, void *data)
{
post_class_fooviz_t *class = (post_class_fooviz_t *)malloc(sizeof(post_class_fooviz_t));
if (!class)
return NULL;
class->post_class.open_plugin = fooviz_open_plugin;
class->post_class.get_identifier = fooviz_get_identifier;
class->post_class.get_description = fooviz_get_description;
class->post_class.dispose = fooviz_class_dispose;
class->xine = xine;
return class;
}
/* plugin catalog information */
post_info_t fooviz_special_info = { XINE_POST_TYPE_AUDIO_VISUALIZATION };
plugin_info_t xine_plugin_info[] = {
/* type, API, "name", version, special_info, init_function */
{ PLUGIN_POST, 9, "fooviz", XINE_VERSION_CODE, &fooviz_special_info, &fooviz_init_plugin },
{ PLUGIN_NONE, 0, "", 0, NULL, NULL }
};
--- NEW FILE: oscope.c ---
/*
* Copyright (C) 2000-2003 the xine project
*
* This file is part of xine, a free video player.
*
* xine 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.
*
* xine 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
*
* Basic Oscilloscope Visualization Post Plugin For xine
* by Mike Melanson (melanson@pcisys.net)
*
* $Id: oscope.c,v 1.1 2005/04/04 22:38:22 dsalt-guest Exp $
*
*/
#include <stdio.h>
#include "xine_internal.h"
#include "xineutils.h"
#include "post.h"
#include "visualizations.h"
#define FPS 20
#define NUMSAMPLES 512
#define MAXCHANNELS 6
#define OSCOPE_WIDTH NUMSAMPLES
#define OSCOPE_HEIGHT 256
typedef struct post_plugin_oscope_s post_plugin_oscope_t;
typedef struct post_class_oscope_s post_class_oscope_t;
struct post_class_oscope_s {
post_class_t post_class;
xine_t *xine;
};
struct post_plugin_oscope_s {
post_plugin_t post;
/* private data */
xine_video_port_t *vo_port;
post_out_t video_output;
/* private metronom for syncing the video */
metronom_t *metronom;
double ratio;
int data_idx;
short data [MAXCHANNELS][NUMSAMPLES];
audio_buffer_t buf; /* dummy buffer just to hold a copy of audio data */
int channels;
int sample_counter;
int samples_per_frame;
unsigned char u_current;
unsigned char v_current;
int u_direction;
int v_direction;
yuv_planes_t yuv;
};
/**************************************************************************
* oscope specific decode functions
*************************************************************************/
static void draw_oscope_dots(post_plugin_oscope_t *this) {
int i, c;
int pixel_ptr;
int c_delta;
memset(this->yuv.y, 0x00, OSCOPE_WIDTH * OSCOPE_HEIGHT);
memset(this->yuv.u, 0x90, OSCOPE_WIDTH * OSCOPE_HEIGHT);
memset(this->yuv.v, 0x80, OSCOPE_WIDTH * OSCOPE_HEIGHT);
/* get a random delta between 1..6 */
c_delta = (rand() % 6) + 1;
/* apply it to the current U value */
if (this->u_direction) {
if (this->u_current + c_delta > 255) {
this->u_current = 255;
this->u_direction = 0;
} else
this->u_current += c_delta;
} else {
if (this->u_current - c_delta < 0) {
this->u_current = 0;
this->u_direction = 1;
} else
this->u_current -= c_delta;
}
/* get a random delta between 1..3 */
c_delta = (rand() % 3) + 1;
/* apply it to the current V value */
if (this->v_direction) {
if (this->v_current + c_delta > 255) {
this->v_current = 255;
this->v_direction = 0;
} else
this->v_current += c_delta;
} else {
if (this->v_current - c_delta < 0) {
this->v_current = 0;
this->v_direction = 1;
} else
this->v_current -= c_delta;
}
for( c = 0; c < this->channels; c++){
/* draw channel scope */
for (i = 0; i < NUMSAMPLES; i++) {
pixel_ptr =
((OSCOPE_HEIGHT * (c * 2 + 1) / (2*this->channels) ) + (this->data[c][i] >> 9)) * OSCOPE_WIDTH + i;
this->yuv.y[pixel_ptr] = 0xFF;
this->yuv.u[pixel_ptr] = this->u_current;
this->yuv.v[pixel_ptr] = this->v_current;
}
}
/* top line */
for (i = 0, pixel_ptr = 0; i < OSCOPE_WIDTH; i++, pixel_ptr++)
this->yuv.y[pixel_ptr] = 0xFF;
/* lines under each channel */
for ( c = 0; c < this->channels; c++)
for (i = 0, pixel_ptr = (OSCOPE_HEIGHT * (c+1) / this->channels - 1) * OSCOPE_WIDTH;
i < OSCOPE_WIDTH; i++, pixel_ptr++)
this->yuv.y[pixel_ptr] = 0xFF;
}
/**************************************************************************
* xine video post plugin functions
*************************************************************************/
static int oscope_rewire_video(xine_post_out_t *output_gen, void *data)
{
post_out_t *output = (post_out_t *)output_gen;
xine_video_port_t *old_port = *(xine_video_port_t **)output_gen->data;
xine_video_port_t *new_port = (xine_video_port_t *)data;
post_plugin_oscope_t *this = (post_plugin_oscope_t *)output->post;
if (!data)
return 0;
old_port->close(old_port, XINE_ANON_STREAM);
new_port->open(new_port, XINE_ANON_STREAM);
/* reconnect ourselves */
this->vo_port = new_port;
return 1;
}
static int oscope_port_open(xine_audio_port_t *port_gen, xine_stream_t *stream,
uint32_t bits, uint32_t rate, int mode) {
post_audio_port_t *port = (post_audio_port_t *)port_gen;
post_plugin_oscope_t *this = (post_plugin_oscope_t *)port->post;
_x_post_rewire(&this->post);
_x_post_inc_usage(port);
port->stream = stream;
port->bits = bits;
port->rate = rate;
port->mode = mode;
this->ratio = (double)OSCOPE_WIDTH/(double)OSCOPE_HEIGHT;
this->channels = _x_ao_mode2channels(mode);
if( this->channels > MAXCHANNELS )
this->channels = MAXCHANNELS;
this->samples_per_frame = rate / FPS;
this->data_idx = 0;
init_yuv_planes(&this->yuv, OSCOPE_WIDTH, OSCOPE_HEIGHT);
this->vo_port->open(this->vo_port, XINE_ANON_STREAM);
this->metronom->set_master(this->metronom, stream->metronom);
return port->original_port->open(port->original_port, stream, bits, rate, mode );
}
static void oscope_port_close(xine_audio_port_t *port_gen, xine_stream_t *stream ) {
post_audio_port_t *port = (post_audio_port_t *)port_gen;
post_plugin_oscope_t *this = (post_plugin_oscope_t *)port->post;
port->stream = NULL;
this->vo_port->close(this->vo_port, XINE_ANON_STREAM);
this->metronom->set_master(this->metronom, NULL);
port->original_port->close(port->original_port, stream );
_x_post_dec_usage(port);
}
static void oscope_port_put_buffer (xine_audio_port_t *port_gen,
audio_buffer_t *buf, xine_stream_t *stream) {
post_audio_port_t *port = (post_audio_port_t *)port_gen;
post_plugin_oscope_t *this = (post_plugin_oscope_t *)port->post;
vo_frame_t *frame;
int16_t *data;
int8_t *data8;
int samples_used = 0;
int64_t pts = buf->vpts;
int i, c;
/* make a copy of buf data for private use */
if( this->buf.mem_size < buf->mem_size ) {
this->buf.mem = realloc(this->buf.mem, buf->mem_size);
this->buf.mem_size = buf->mem_size;
}
memcpy(this->buf.mem, buf->mem,
buf->num_frames*this->channels*((port->bits == 8)?1:2));
this->buf.num_frames = buf->num_frames;
/* pass data to original port */
port->original_port->put_buffer(port->original_port, buf, stream );
/* we must not use original data anymore, it should have already being moved
* to the fifo of free audio buffers. just use our private copy instead.
*/
buf = &this->buf;
this->sample_counter += buf->num_frames;
do {
if( port->bits == 8 ) {
data8 = (int8_t *)buf->mem;
data8 += samples_used * this->channels;
/* scale 8 bit data to 16 bits and convert to signed as well */
for( i = 0; i < buf->num_frames && this->data_idx < NUMSAMPLES;
i++, this->data_idx++, data8 += this->channels )
for( c = 0; c < this->channels; c++)
this->data[c][this->data_idx] = ((int16_t)data8[c] << 8) - 0x8000;
} else {
data = buf->mem;
data += samples_used * this->channels;
for( i = 0; i < buf->num_frames && this->data_idx < NUMSAMPLES;
i++, this->data_idx++, data += this->channels )
for( c = 0; c < this->channels; c++)
this->data[c][this->data_idx] = data[c];
}
if( this->sample_counter >= this->samples_per_frame &&
this->data_idx == NUMSAMPLES ) {
this->data_idx = 0;
samples_used += this->samples_per_frame;
frame = this->vo_port->get_frame (this->vo_port, OSCOPE_WIDTH, OSCOPE_HEIGHT,
this->ratio, XINE_IMGFMT_YUY2,
VO_BOTH_FIELDS);
frame->extra_info->invalid = 1;
frame->bad_frame = 0;
frame->duration = 90000 * this->samples_per_frame / port->rate;
frame->pts = pts;
this->metronom->got_video_frame(this->metronom, frame);
this->sample_counter -= this->samples_per_frame;
draw_oscope_dots(this);
yuv444_to_yuy2(&this->yuv, frame->base[0], frame->pitches[0]);
frame->draw(frame, XINE_ANON_STREAM);
frame->free(frame);
}
} while( this->sample_counter >= this->samples_per_frame );
}
static void oscope_dispose(post_plugin_t *this_gen)
{
post_plugin_oscope_t *this = (post_plugin_oscope_t *)this_gen;
if (_x_post_dispose(this_gen)) {
this->metronom->exit(this->metronom);
if(this->buf.mem)
free(this->buf.mem);
free(this);
}
}
/* plugin class functions */
static post_plugin_t *oscope_open_plugin(post_class_t *class_gen, int inputs,
xine_audio_port_t **audio_target,
xine_video_port_t **video_target)
{
post_class_oscope_t *class = (post_class_oscope_t *)class_gen;
post_plugin_oscope_t *this = (post_plugin_oscope_t *)xine_xmalloc(sizeof(post_plugin_oscope_t));
post_in_t *input;
post_out_t *output;
post_out_t *outputv;
post_audio_port_t *port;
if (!this || !video_target || !video_target[0] || !audio_target || !audio_target[0] ) {
free(this);
return NULL;
}
_x_post_init(&this->post, 1, 0);
this->metronom = _x_metronom_init(1, 0, class->xine);
this->vo_port = video_target[0];
port = _x_post_intercept_audio_port(&this->post, audio_target[0], &input, &output);
port->new_port.open = oscope_port_open;
port->new_port.close = oscope_port_close;
port->new_port.put_buffer = oscope_port_put_buffer;
outputv = &this->video_output;
outputv->xine_out.name = "generated video";
outputv->xine_out.type = XINE_POST_DATA_VIDEO;
outputv->xine_out.data = (xine_video_port_t **)&this->vo_port;
outputv->xine_out.rewire = oscope_rewire_video;
outputv->post = &this->post;
xine_list_append_content(this->post.output, outputv);
this->post.xine_post.audio_input[0] = &port->new_port;
this->post.dispose = oscope_dispose;
return &this->post;
}
static char *oscope_get_identifier(post_class_t *class_gen)
{
return "Oscilloscope";
}
static char *oscope_get_description(post_class_t *class_gen)
{
return "Oscilloscope";
}
static void oscope_class_dispose(post_class_t *class_gen)
{
free(class_gen);
}
/* plugin class initialization function */
void *oscope_init_plugin(xine_t *xine, void *data)
{
post_class_oscope_t *class = (post_class_oscope_t *)malloc(sizeof(post_class_oscope_t));
if (!class)
return NULL;
class->post_class.open_plugin = oscope_open_plugin;
class->post_class.get_identifier = oscope_get_identifier;
class->post_class.get_description = oscope_get_description;
class->post_class.dispose = oscope_class_dispose;
class->xine = xine;
return &class->post_class;
}
--- NEW FILE: visualizations.h ---
/*
* Copyright (C) 2000-2003 the xine project
*
* This file is part of xine, a free video player.
*
* xine 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.
*
* xine 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
*
* This file contains plugin entries for several visualization post plugins.
*
* $Id: visualizations.h,v 1.1 2005/04/04 22:38:22 dsalt-guest Exp $
*/
#include "xine_internal.h"
void *oscope_init_plugin(xine_t *xine, void *data);
void *fftscope_init_plugin(xine_t *xine, void *data);
void *fftgraph_init_plugin(xine_t *xine, void *data);
--- NEW FILE: fft.c ---
/*
* Copyright (C) 2000-2003 the xine project
*
* This file is part of xine, a free video player.
*
* xine 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.
*
* xine 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
*
* FFT code by Steve Haehnichen, originally licensed under GPL v1
* modified by Thibaut Mattern (tmattern@noos.fr) to remove global vars
*/
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include "fft.h"
/**************************************************************************
* fft specific decode functions
*************************************************************************/
# define SINE(x) (fft->SineTable[(x)])
# define COSINE(x) (fft->CosineTable[(x)])
# define WINDOW(x) (fft->WinTable[(x)])
#define PERMUTE(x, y) reverse((x), (y))
/* Number of samples in one "frame" */
#define SAMPLES (1 << bits)
#define REAL(x) wave[(x)].re
#define IMAG(x) wave[(x)].im
#define ALPHA 0.54
/*
* Bit reverser for unsigned ints
* Reverses 'bits' bits.
*/
static inline const unsigned int
reverse (unsigned int val, int bits)
{
unsigned int retn = 0;
while (bits--)
{
retn <<= 1;
retn |= (val & 1);
val >>= 1;
}
return (retn);
}
/*
* Here is the real work-horse.
* It's a generic FFT, so nothing is lost or approximated.
* The samples in wave[] should be in order, and they
* will be decimated when fft() returns.
*/
void fft_compute (fft_t *fft, complex_t wave[])
{
register int loop, loop1, loop2;
unsigned i1; /* going to right shift this */
int i2, i3, i4, y;
double a1, a2, b1, b2, z1, z2;
int bits = fft->bits;
i1 = SAMPLES / 2;
i2 = 1;
/* perform the butterflys */
for (loop = 0; loop < bits; loop++)
{
i3 = 0;
i4 = i1;
for (loop1 = 0; loop1 < i2; loop1++)
{
y = PERMUTE(i3 / (int)i1, bits);
z1 = COSINE(y);
z2 = -SINE(y);
for (loop2 = i3; loop2 < i4; loop2++)
{
a1 = REAL(loop2);
a2 = IMAG(loop2);
b1 = z1 * REAL(loop2+i1) - z2 * IMAG(loop2+i1);
b2 = z2 * REAL(loop2+i1) + z1 * IMAG(loop2+i1);
REAL(loop2) = a1 + b1;
IMAG(loop2) = a2 + b2;
REAL(loop2+i1) = a1 - b1;
IMAG(loop2+i1) = a2 - b2;
}
i3 += (i1 << 1);
i4 += (i1 << 1);
}
i1 >>= 1;
i2 <<= 1;
}
}
/*
* Initializer for FFT routines. Currently only sets up tables.
* - Generates scaled lookup tables for sin() and cos()
* - Fills a table for the Hamming window function
*/
fft_t *fft_new (int bits)
{
fft_t *fft;
int i;
const double TWOPIoN = (atan(1.0) * 8.0) / (double)SAMPLES;
const double TWOPIoNm1 = (atan(1.0) * 8.0) / (double)(SAMPLES - 1);
/* printf("fft_new: bits=%d\n", bits); */
fft = (fft_t*)malloc(sizeof(fft_t));
if (!fft)
return NULL;
fft->bits = bits;
fft->SineTable = malloc (sizeof(double) * SAMPLES);
fft->CosineTable = malloc (sizeof(double) * SAMPLES);
fft->WinTable = malloc (sizeof(double) * SAMPLES);
for (i=0; i < SAMPLES; i++)
{
fft->SineTable[i] = sin((double) i * TWOPIoN);
fft->CosineTable[i] = cos((double) i * TWOPIoN);
/*
* Generalized Hamming window function.
* Set ALPHA to 0.54 for a hanning window. (Good idea)
*/
fft->WinTable[i] = ALPHA + ((1.0 - ALPHA)
* cos (TWOPIoNm1 * (i - SAMPLES/2)));
}
return fft;
}
void fft_dispose(fft_t *fft)
{
free(fft->SineTable);
free(fft->CosineTable);
free(fft->WinTable);
free(fft);
}
/*
* Apply some windowing function to the samples.
*/
void fft_window (fft_t *fft, complex_t wave[])
{
int i;
int bits = fft->bits;
for (i = 0; i < SAMPLES; i++)
{
REAL(i) *= WINDOW(i);
IMAG(i) *= WINDOW(i);
}
}
/*
* Calculate amplitude of component n in the decimated wave[] array.
*/
double fft_amp (int n, complex_t wave[], int bits)
{
n = PERMUTE (n, bits);
return (hypot (REAL(n), IMAG(n)));
}
/*
* Calculate phase of component n in the decimated wave[] array.
*/
double fft_phase (int n, complex_t wave[], int bits)
{
n = PERMUTE (n, bits);
if (REAL(n) != 0.0)
return (atan (IMAG(n) / REAL(n)));
else
return (0.0);
}
/*
* Scale sampled values.
* Do this *before* the fft.
*/
void fft_scale (complex_t wave[], int bits)
{
int i;
for (i = 0; i < SAMPLES; i++) {
wave[i].re /= SAMPLES;
wave[i].im /= SAMPLES;
}
}
--- NEW FILE: Makefile.in ---
# Makefile.in generated by automake 1.9.3 from Makefile.am.
# @configure_input@
# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
# 2003, 2004 Free Software Foundation, Inc.
# This Makefile.in is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
# PARTICULAR PURPOSE.
@SET_MAKE@
SOURCES = $(xineplug_post_visualizations_la_SOURCES)
srcdir = @srcdir@
top_srcdir = @top_srcdir@
VPATH = @srcdir@
pkgdatadir = $(datadir)/@PACKAGE@
pkglibdir = $(libdir)/@PACKAGE@
pkgincludedir = $(includedir)/@PACKAGE@
top_builddir = ../../..
am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
INSTALL = @INSTALL@
install_sh_DATA = $(install_sh) -c -m 644
install_sh_PROGRAM = $(install_sh) -c
install_sh_SCRIPT = $(install_sh) -c
INSTALL_HEADER = $(INSTALL_DATA)
transform = $(program_transform_name)
NORMAL_INSTALL = :
PRE_INSTALL = :
POST_INSTALL = :
NORMAL_UNINSTALL = :
PRE_UNINSTALL = :
POST_UNINSTALL = :
build_triplet = @build@
host_triplet = @host@
target_triplet = @target@
DIST_COMMON = $(noinst_HEADERS) $(srcdir)/Makefile.am \
$(srcdir)/Makefile.in $(top_srcdir)/misc/Makefile.common
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# Tell versions [3.59,3.63) of GNU make to not export all variables.
# Otherwise a system limit (for SysV at least) may be exceeded.
.NOEXPORT:
--- NEW FILE: Makefile.am ---
include $(top_srcdir)/misc/Makefile.common
EXTRA_DIST = fooviz.c
libdir = $(XINE_PLUGINDIR)/post
lib_LTLIBRARIES = xineplug_post_visualizations.la
xineplug_post_visualizations_la_SOURCES = \
visualizations.c fft.c fftscope.c oscope.c fftgraph.c
xineplug_post_visualizations_la_LIBADD = $(XINE_LIB)
xineplug_post_visualizations_la_LDFLAGS = -avoid-version -module @XINE_PLUGIN_MIN_SYMS@ -lm
noinst_HEADERS = fft.h visualizations.h
--- NEW FILE: fft.h ---
/*
* Copyright (C) 2000-2003 the xine project
*
* This file is part of xine, a free video player.
*
* xine 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.
*
* xine 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
*
*/
#ifndef FFT_H
#define FFT_H
struct complex_s
{
double re;
double im;
};
typedef struct complex_s complex_t;
struct fft_s {
int bits;
double *SineTable;
double *CosineTable;
double *WinTable;
};
typedef struct fft_s fft_t;
fft_t *fft_new (int bits);
void fft_dispose(fft_t *fft);
void fft_compute (fft_t *fft, complex_t wave[]);
void fft_window (fft_t *fft, complex_t wave[]);
double fft_amp (int n, complex_t wave[], int bits);
double fft_phase (int n, complex_t wave[], int bits);
void fft_scale (complex_t wave[], int bits);
#endif /* FFT_H */
--- NEW FILE: fftgraph.c ---
/*
* Copyright (C) 2000-2003 the xine project
*
* This file is part of xine, a free video player.
*
* xine 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.
*
* xine 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
*
* FftGraph Visualization Post Plugin For xine
* by Thibaut Mattern (tmattern@noos.fr)
*
* $Id: fftgraph.c,v 1.1 2005/04/04 22:38:22 dsalt-guest Exp $
*
*/
#include <stdio.h>
#include <math.h>
#include <assert.h>
#include "xine_internal.h"
#include "xineutils.h"
#include "post.h"
#include "bswap.h"
#include "visualizations.h"
#include "fft.h"
#define FPS 20
#define FFTGRAPH_WIDTH 512
#define FFTGRAPH_HEIGHT 256
#define FFT_BITS 11
#define NUMSAMPLES (1 << FFT_BITS)
#define MAXCHANNELS 6
typedef struct post_plugin_fftgraph_s post_plugin_fftgraph_t;
typedef struct post_class_fftgraph_s post_class_fftgraph_t;
struct post_class_fftgraph_s {
post_class_t post_class;
xine_t *xine;
};
struct post_plugin_fftgraph_s {
post_plugin_t post;
/* private data */
xine_video_port_t *vo_port;
post_out_t video_output;
/* private metronom for syncing the video */
metronom_t *metronom;
double ratio;
int data_idx;
complex_t wave[MAXCHANNELS][NUMSAMPLES];
audio_buffer_t buf; /* dummy buffer just to hold a copy of audio data */
int channels;
int sample_counter;
int samples_per_frame;
fft_t *fft;
uint32_t map[FFTGRAPH_HEIGHT][FFTGRAPH_WIDTH / 2];
int cur_line;
int lines_per_channel;
uint32_t yuy2_colors[8192];
};
/*
* fade function
*/
static void fade(int r1, int g1, int b1,
int r2, int g2, int b2,
uint32_t *yuy2_colors, int steps) {
int i, r, g, b, y, u, v;
for (i = 0; i < steps; i++) {
r = r1 + (r2 - r1) * i / steps;
g = g1 + (g2 - g1) * i / steps;
b = b1 + (b2 - b1) * i / steps;
y = COMPUTE_Y(r, g, b);
u = COMPUTE_U(r, g, b);
v = COMPUTE_V(r, g, b);
*(yuy2_colors + i) = be2me_32((y << 24) |
(u << 16) |
(y << 8) |
v);
}
}
static void draw_fftgraph(post_plugin_fftgraph_t *this, vo_frame_t *frame) {
int i, c, y;
int map_ptr;
int amp_int;
float amp_float;
uint32_t yuy2_white;
int line, line_min, line_max;
yuy2_white = be2me_32((0xFF << 24) |
(0x80 << 16) |
(0xFF << 8) |
0x80);
for (c = 0; c < this->channels; c++){
/* perform FFT for channel data */
fft_window(this->fft, this->wave[c]);
fft_scale(this->wave[c], this->fft->bits);
fft_compute(this->fft, this->wave[c]);
/* plot the FFT points for the channel */
line = this->cur_line + c * this->lines_per_channel;
for (i = 0; i < FFTGRAPH_WIDTH / 2; i++) {
amp_float = fft_amp(i, this->wave[c], this->fft->bits);
amp_int = (int)(amp_float);
if (amp_int > 8191)
amp_int = 8191;
if (amp_int < 0)
amp_int = 0;
this->map[line][i] = this->yuy2_colors[amp_int];
}
}
this->cur_line = (this->cur_line + 1) % this->lines_per_channel;
/* scrolling map */
map_ptr = 0;
for(c = 0; c < this->channels; c++) {
line = this->cur_line + c * this->lines_per_channel;
line_min = c * this->lines_per_channel;
line_max = (c + 1) * this->lines_per_channel;
for(y = line; y < line_max; y++) {
xine_fast_memcpy(((uint32_t *)frame->base[0]) + map_ptr,
this->map[y],
FFTGRAPH_WIDTH * 2);
map_ptr += (FFTGRAPH_WIDTH / 2);
}
for(y = line_min; y < line; y++) {
xine_fast_memcpy(((uint32_t *)frame->base[0]) + map_ptr,
this->map[y],
FFTGRAPH_WIDTH * 2);
map_ptr += (FFTGRAPH_WIDTH / 2);
}
}
/* top line */
for (map_ptr = 0; map_ptr < FFTGRAPH_WIDTH / 2; map_ptr++)
((uint32_t *)frame->base[0])[map_ptr] = yuy2_white;
/* lines under each channel */
for (c = 0; c < this->channels; c++){
for (i = 0, map_ptr = ((FFTGRAPH_HEIGHT * (c+1) / this->channels -1 ) * FFTGRAPH_WIDTH) / 2;
i < FFTGRAPH_WIDTH / 2; i++, map_ptr++)
((uint32_t *)frame->base[0])[map_ptr] = yuy2_white;
}
}
/**************************************************************************
* xine video post plugin functions
*************************************************************************/
static int fftgraph_rewire_video(xine_post_out_t *output_gen, void *data)
{
post_out_t *output = (post_out_t *)output_gen;
xine_video_port_t *old_port = *(xine_video_port_t **)output_gen->data;
xine_video_port_t *new_port = (xine_video_port_t *)data;
post_plugin_fftgraph_t *this = (post_plugin_fftgraph_t *)output->post;
if (!data)
return 0;
/* register our stream at the new output port */
old_port->close(old_port, XINE_ANON_STREAM);
new_port->open(new_port, XINE_ANON_STREAM);
/* reconnect ourselves */
this->vo_port = new_port;
return 1;
}
static int fftgraph_port_open(xine_audio_port_t *port_gen, xine_stream_t *stream,
uint32_t bits, uint32_t rate, int mode) {
post_audio_port_t *port = (post_audio_port_t *)port_gen;
post_plugin_fftgraph_t *this = (post_plugin_fftgraph_t *)port->post;
int i,j;
uint32_t *color_ptr;
uint32_t last_color, yuy2_black;
/* printf("fftgraph_port_open, port_gen=%p, stream=%p, this=%p\n", port_gen, stream, this); */
_x_post_rewire(&this->post);
_x_post_inc_usage(port);
port->stream = stream;
port->bits = bits;
port->rate = rate;
port->mode = mode;
this->ratio = (double)FFTGRAPH_WIDTH / (double)FFTGRAPH_HEIGHT;
this->channels = _x_ao_mode2channels(mode);
if( this->channels > MAXCHANNELS )
this->channels = MAXCHANNELS;
this->lines_per_channel = FFTGRAPH_HEIGHT / this->channels;
this->samples_per_frame = rate / FPS;
this->data_idx = 0;
this->vo_port->open(this->vo_port, XINE_ANON_STREAM);
this->metronom->set_master(this->metronom, stream->metronom);
this->fft = fft_new(FFT_BITS);
this->cur_line = 0;
/* compute colors */
color_ptr = this->yuy2_colors;
/* black -> red */
fade(0, 0, 0,
128, 0, 0,
color_ptr, 128);
color_ptr += 128;
/* red -> blue */
fade(128, 0, 0,
40, 0, 160,
color_ptr, 256);
color_ptr += 256;
/* blue -> green */
fade(40, 0, 160,
40, 160, 70,
color_ptr, 1024);
color_ptr += 1024;
/* green -> white */
fade(40, 160, 70,
255, 255, 255,
color_ptr, 2048);
color_ptr += 2048;
last_color = *(color_ptr - 1);
/* white */
for (i = 0; i < 8192 - 128 - 256 - 1024 - 2048; i++) {
*color_ptr = last_color;
color_ptr++;
}
/* clear the map */
yuy2_black = be2me_32((0x00 << 24) |
(0x80 << 16) |
(0x00 << 8) |
0x80);
for (i = 0; i < FFTGRAPH_HEIGHT; i++) {
for (j = 0; j < (FFTGRAPH_WIDTH / 2); j++) {
this->map[i][j] = yuy2_black;
}
}
return port->original_port->open(port->original_port, stream, bits, rate, mode );
}
static void fftgraph_port_close(xine_audio_port_t *port_gen, xine_stream_t *stream ) {
post_audio_port_t *port = (post_audio_port_t *)port_gen;
post_plugin_fftgraph_t *this = (post_plugin_fftgraph_t *)port->post;
port->stream = NULL;
fft_dispose(this->fft);
this->fft = NULL;
this->vo_port->close(this->vo_port, XINE_ANON_STREAM);
this->metronom->set_master(this->metronom, NULL);
port->original_port->close(port->original_port, stream );
_x_post_dec_usage(port);
}
static void fftgraph_port_put_buffer (xine_audio_port_t *port_gen,
audio_buffer_t *buf, xine_stream_t *stream) {
post_audio_port_t *port = (post_audio_port_t *)port_gen;
post_plugin_fftgraph_t *this = (post_plugin_fftgraph_t *)port->post;
vo_frame_t *frame;
int16_t *data;
int8_t *data8;
int samples_used = 0;
int64_t pts = buf->vpts;
int i, c;
/* make a copy of buf data for private use */
if( this->buf.mem_size < buf->mem_size ) {
this->buf.mem = realloc(this->buf.mem, buf->mem_size);
this->buf.mem_size = buf->mem_size;
}
memcpy(this->buf.mem, buf->mem,
buf->num_frames*this->channels*((port->bits == 8)?1:2));
this->buf.num_frames = buf->num_frames;
/* pass data to original port */
port->original_port->put_buffer(port->original_port, buf, stream );
/* we must not use original data anymore, it should have already being moved
* to the fifo of free audio buffers. just use our private copy instead.
*/
buf = &this->buf;
this->sample_counter += buf->num_frames;
do {
if( port->bits == 8 ) {
data8 = (int8_t *)buf->mem;
data8 += samples_used * this->channels;
/* scale 8 bit data to 16 bits and convert to signed as well */
for( i = 0; i < buf->num_frames && this->data_idx < NUMSAMPLES;
i++, this->data_idx++, data8 += this->channels ) {
for( c = 0; c < this->channels; c++){
this->wave[c][this->data_idx].re = (double)(data8[c] << 8) - 0x8000;
this->wave[c][this->data_idx].im = 0;
}
}
} else {
data = buf->mem;
data += samples_used * this->channels;
for( i = 0; i < buf->num_frames && this->data_idx < NUMSAMPLES;
i++, this->data_idx++, data += this->channels ) {
for( c = 0; c < this->channels; c++){
this->wave[c][this->data_idx].re = (double)data[c];
this->wave[c][this->data_idx].im = 0;
}
}
}
if( this->sample_counter >= this->samples_per_frame &&
this->data_idx == NUMSAMPLES ) {
this->data_idx = 0;
samples_used += this->samples_per_frame;
frame = this->vo_port->get_frame (this->vo_port, FFTGRAPH_WIDTH, FFTGRAPH_HEIGHT,
this->ratio, XINE_IMGFMT_YUY2,
VO_BOTH_FIELDS);
frame->extra_info->invalid = 1;
frame->bad_frame = 0;
frame->duration = 90000 * this->samples_per_frame / port->rate;
frame->pts = pts;
this->metronom->got_video_frame(this->metronom, frame);
this->sample_counter -= this->samples_per_frame;
if( this->fft )
draw_fftgraph(this, frame);
else
frame->bad_frame = 1;
frame->draw(frame, XINE_ANON_STREAM);
frame->free(frame);
}
} while( this->sample_counter >= this->samples_per_frame );
}
static void fftgraph_dispose(post_plugin_t *this_gen)
{
post_plugin_fftgraph_t *this = (post_plugin_fftgraph_t *)this_gen;
if (_x_post_dispose(this_gen)) {
this->metronom->exit(this->metronom);
if(this->buf.mem)
free(this->buf.mem);
free(this);
}
}
/* plugin class functions */
static post_plugin_t *fftgraph_open_plugin(post_class_t *class_gen, int inputs,
xine_audio_port_t **audio_target,
xine_video_port_t **video_target)
{
post_class_fftgraph_t *class = (post_class_fftgraph_t *)class_gen;
post_plugin_fftgraph_t *this = (post_plugin_fftgraph_t *)xine_xmalloc(sizeof(post_plugin_fftgraph_t));
post_in_t *input;
post_out_t *output;
post_out_t *outputv;
post_audio_port_t *port;
if (!this || !video_target || !video_target[0] || !audio_target || !audio_target[0] ) {
free(this);
return NULL;
}
_x_post_init(&this->post, 1, 0);
this->metronom = _x_metronom_init(1, 0, class->xine);
this->vo_port = video_target[0];
port = _x_post_intercept_audio_port(&this->post, audio_target[0], &input, &output);
port->new_port.open = fftgraph_port_open;
port->new_port.close = fftgraph_port_close;
port->new_port.put_buffer = fftgraph_port_put_buffer;
outputv = &this->video_output;
outputv->xine_out.name = "generated video";
outputv->xine_out.type = XINE_POST_DATA_VIDEO;
outputv->xine_out.data = (xine_video_port_t **)&this->vo_port;
outputv->xine_out.rewire = fftgraph_rewire_video;
outputv->post = &this->post;
xine_list_append_content(this->post.output, outputv);
this->post.xine_post.audio_input[0] = &port->new_port;
this->post.dispose = fftgraph_dispose;
return &this->post;
}
static char *fftgraph_get_identifier(post_class_t *class_gen)
{
return "fftgraph";
}
static char *fftgraph_get_description(post_class_t *class_gen)
{
return "fftgraph Visualization Post Plugin";
}
static void fftgraph_class_dispose(post_class_t *class_gen)
{
free(class_gen);
}
/* plugin class initialization function */
void *fftgraph_init_plugin(xine_t *xine, void *data)
{
post_class_fftgraph_t *class = (post_class_fftgraph_t *)malloc(sizeof(post_class_fftgraph_t));
if (!class)
return NULL;
class->post_class.open_plugin = fftgraph_open_plugin;
class->post_class.get_identifier = fftgraph_get_identifier;
class->post_class.get_description = fftgraph_get_description;
class->post_class.dispose = fftgraph_class_dispose;
class->xine = xine;
return class;
}
--- NEW FILE: visualizations.c ---
/*
* Copyright (C) 2000-2004 the xine project
*
* This file is part of xine, a free video player.
*
* xine 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.
*
* xine 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
*
* This file contains plugin entries for several visualization post plugins.
*
* $Id: visualizations.c,v 1.1 2005/04/04 22:38:22 dsalt-guest Exp $
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "xine_internal.h"
#include "post.h"
#include "visualizations.h"
void *oscope_init_plugin(xine_t *xine, void *data);
void *fftscope_init_plugin(xine_t *xine, void *data);
void *fftgraph_init_plugin(xine_t *xine, void *data);
/*
* exported plugin catalog entries
*/
/* plugin catalog information */
post_info_t oscope_special_info = { XINE_POST_TYPE_AUDIO_VISUALIZATION };
post_info_t fftscope_special_info = { XINE_POST_TYPE_AUDIO_VISUALIZATION };
post_info_t fftgraph_special_info = { XINE_POST_TYPE_AUDIO_VISUALIZATION };
plugin_info_t xine_plugin_info[] = {
/* type, API, "name", version, special_info, init_function */
{ PLUGIN_POST, 9, "oscope", XINE_VERSION_CODE, &oscope_special_info, &oscope_init_plugin },
{ PLUGIN_POST, 9, "fftscope", XINE_VERSION_CODE, &fftscope_special_info, &fftscope_init_plugin },
{ PLUGIN_POST, 9, "fftgraph", XINE_VERSION_CODE, &fftgraph_special_info, &fftgraph_init_plugin },
{ PLUGIN_NONE, 0, "", 0, NULL, NULL }
};