VISUAL_C_LINKAGE
int lv_gforce_render (VisPluginData *plugin, VisVideo *video, VisAudio *audio)
{
GForcePrivate *priv = (GForcePrivate *) visual_object_get_private (VISUAL_OBJECT (plugin));
VisBuffer pcmbuf;
VisBuffer freqbuf;
int i;
long time;
float gSoundBuf[SND_BUF_SIZE];
float gFFTBuf[FFT_BUF_SIZE];
visual_buffer_set_data_pair (&pcmbuf, gSoundBuf, sizeof (gSoundBuf));
visual_audio_get_sample_mixed_simple (audio, &pcmbuf, 2,
VISUAL_AUDIO_CHANNEL_LEFT,
VISUAL_AUDIO_CHANNEL_RIGHT);
visual_buffer_set_data_pair (&freqbuf, gFFTBuf, sizeof (gFFTBuf));
visual_audio_get_spectrum_for_sample_multiplied (&freqbuf, &pcmbuf, TRUE, 3.0);
// Increase volume
for (i = 0; i < SND_BUF_SIZE; i++)
gSoundBuf[i] *= 32768;
// Set the video buffer
priv->gGF->SetOutVideoBuffer ((unsigned char *) visual_video_get_pixels (video));
time = EgOSUtils::CurTimeMS ();
priv->gGF->RecordSample (time, gSoundBuf, .000043, NUMSAMPLES, gFFTBuf, 1, FFT_BUF_SIZE);
return 0;
}
static void act_bumpscope_render (VisPluginData *plugin, VisVideo *video, VisAudio *audio)
{
BumpscopePrivate *priv = visual_plugin_get_private (plugin);
priv->video = video;
visual_audio_get_sample_mixed_simple (audio, priv->pcmbuf, 2,
VISUAL_AUDIO_CHANNEL_LEFT,
VISUAL_AUDIO_CHANNEL_RIGHT);
__bumpscope_render_pcm (priv, visual_buffer_get_data (priv->pcmbuf));
visual_mem_copy (visual_video_get_pixels (video), priv->rgb_buf2, visual_video_get_size (video));
priv->colorupdate++;
/* Let's not overload the color selector */
if (priv->colorupdate > 1)
priv->colorupdate = 0;
if (priv->colorchanged == TRUE && priv->colorupdate == 0) {
/* I couldn't hold myself */
visual_param_set_value_color (
visual_param_list_get (
visual_plugin_get_params (plugin), "color"), &priv->color);
}
}
static int act_jakdaw_render (VisPluginData *plugin, VisVideo *video, VisAudio *audio)
{
JakdawPrivate *priv = visual_object_get_private (VISUAL_OBJECT (plugin));
uint32_t *vscr = visual_video_get_pixels (video);
visual_audio_get_sample_mixed_simple (audio, priv->pcmbuf, 2,
VISUAL_AUDIO_CHANNEL_LEFT,
VISUAL_AUDIO_CHANNEL_RIGHT);
visual_audio_get_spectrum_for_sample (priv->freqbuf, priv->pcmbuf, TRUE);
_jakdaw_feedback_render (priv, vscr);
_jakdaw_plotter_draw (priv,
visual_buffer_get_data (priv->pcmbuf),
visual_buffer_get_data (priv->freqbuf), vscr);
return 0;
}
static int lv_flower_render (VisPluginData *plugin, VisVideo *video, VisAudio *audio)
{
FlowerPrivate *priv = visual_object_get_private (VISUAL_OBJECT (plugin));
VisBuffer *pcmbuf;
VisBuffer *freqbuf;
float pcm[512];
float freqnorm[256];
float temp_bars[NOTCH_BANDS];
float f;
int b;
int i;
pcmbuf = visual_buffer_new ();
freqbuf = visual_buffer_new ();
visual_buffer_set_data_pair (pcmbuf, pcm, sizeof (pcm));
visual_buffer_set_data_pair (freqbuf, freqnorm, sizeof (freqnorm));
visual_audio_get_sample_mixed_simple (audio, pcmbuf, 2,
VISUAL_AUDIO_CHANNEL_LEFT,
VISUAL_AUDIO_CHANNEL_RIGHT);
visual_audio_get_spectrum_for_sample (freqbuf, pcmbuf, TRUE);
/* Activate the effect change timer */
if (!visual_timer_is_active (priv->t))
visual_timer_start (priv->t);
/* At 15 secs, do with new settings, reset timer */
if (visual_timer_is_past2 (priv->t, 15, 0)) {
priv->flower.tension_new = (-visual_random_context_float (priv->rcxt)) * 12.0;
priv->flower.continuity_new = (visual_random_context_float (priv->rcxt) - 0.5) * 32.0;
visual_timer_start (priv->t);
}
/* Activate global timer */
if (!visual_timer_is_active (priv->flower.timer))
visual_timer_start (priv->flower.timer);
for (b=0; b<priv->nof_bands; b++)
temp_bars[b]=0.0;
for (i=0; i<256; i++) {
for (b=0; b<priv->nof_bands; b++) {
f=process_notch (priv->notch[b], freqnorm[i] * 15);
if (fabs(f)>temp_bars[b])
temp_bars[b]=fabs(f);
}
}
/* Not part of the if !!! */
{
#define HEIGHT 1.0
#define D 0.45
#define TAU 0.25
#define DIF 5.0
float lk=2.0;
float l0=2.0;
float scale = HEIGHT / ( log((1 - D) / D) * 2 );
float x00 = D*D*1.0/(2 * D - 1);
float y00 = -log(-x00) * scale;
float y;
int i;
for (i=0; i<priv->nof_bands; i++) {
y=temp_bars[i * 8];
y=y*(i*lk+l0);
y = ( log(y - x00) * scale + y00 ); /* Logarithmic amplitude */
y = ( (DIF-2.0)*y +
(i==0 ? 0 : temp_bars[i - 1]) +
(i==31 ? 0 : temp_bars[i + 1])) / DIF;
y=((1.0-TAU)*priv->flower.audio_bars[i]+TAU*y) * 1.00;
priv->flower.audio_bars[i]=y;
}
}
priv->flower.roty += (priv->flower.audio_bars[15]) * 0.6;
priv->flower.rotx += (priv->flower.audio_bars[1]) * 0.7;
priv->flower.posz = +1;
render_flower_effect (&priv->flower);
visual_buffer_free (pcmbuf);
visual_buffer_free (freqbuf);
return 0;
}
static int nebulus_sound (NebulusPrivate *priv, VisAudio *audio)
{
int i, c, y, tmp;
GLfloat val, energy = 0;
int xscale[] = { 0, 1, 2, 3, 5, 7, 10, 14, 20, 28, 40, 54, 74, 101, 137, 187, 255 };
float *fbuf;
VisBuffer *buf;
float freq[256];
visual_audio_get_sample_mixed_simple (audio, priv->pcmbuf, 2,
VISUAL_AUDIO_CHANNEL_LEFT,
VISUAL_AUDIO_CHANNEL_RIGHT);
buf = visual_buffer_new_wrap_data (freq, sizeof (freq));
visual_audio_get_spectrum_for_sample (buf, priv->pcmbuf, FALSE);
visual_buffer_free (buf);
fbuf = visual_buffer_get_data (priv->pcmbuf);
for (i = 0; i < 1024; i++) {
pcm_data[i] = fbuf[i] * 32767; // FIXME pull the 32767 as a constant from somewhere, also in goom2.c
}
for(y = 15; y > 0; y--) {
for(i = 0; i < 16; i++)
heights[y][i] = heights[y - 1][i];
}
for(i = 0; i < NUM_BANDS; i++) {
for(c = xscale[i], y = 0; c < xscale[i + 1]; c++) {
if(freq[c] > y)
y = freq[c];
}
loudness += (y / (xscale[i + 1] - xscale[i] + 1)) *
(abs (i - NUM_BANDS / 2) + NUM_BANDS / 2) * (4 + i);
y >>= 7;
if(y > 0)
val = (log(y) * scale);
else
val = 0;
heights[0][i] = val;
}
loudness /= (NUM_BANDS * 4);
beat = nebulus_detect_beat (loudness);
too_long++;
if (!point_general->freeze) {
if (too_long > 1000) {
too_long = 0;
point_general->effect = nebulus_random_effect();
point_general->changement = TRUE;
}
if (beat) {
if (beat_compteur > point_general->beat - 1) {
point_general->effect = nebulus_random_effect();
point_general->changement = TRUE;
beat_compteur = 0;
too_long = 0;
}
beat_compteur += beat;
}
}
for (i = 0; i < 256; i++) {
tmp = freq[i] * 0.0625;
energy += tmp * tmp;
}
energy = energy / 65536 / 256 * 256;
energy += 6.0f;
energy *= 1.2f;
if (energy > 10)
energy = 10;
point_general->energy = energy;
return 0;
}
