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-rw-r--r--src/post/visualizations/fftscope.c90
1 files changed, 60 insertions, 30 deletions
diff --git a/src/post/visualizations/fftscope.c b/src/post/visualizations/fftscope.c
index 4e01dec30..e9bdc659d 100644
--- a/src/post/visualizations/fftscope.c
+++ b/src/post/visualizations/fftscope.c
@@ -22,7 +22,7 @@
*
* FFT code by Steve Haehnichen, originally licensed under GPL v1
*
- * $Id: fftscope.c,v 1.6 2003/02/09 19:25:25 tmattern Exp $
+ * $Id: fftscope.c,v 1.7 2003/02/10 00:02:45 tmattern Exp $
*
*/
@@ -61,7 +61,9 @@ struct post_plugin_fftscope_s {
int data_idx;
complex wave[MAXCHANNELS][NUMSAMPLES];
int amp_max[MAXCHANNELS][NUMSAMPLES / 2];
- uint32_t amp_max_yuy2[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];
audio_buffer_t buf; /* dummy buffer just to hold a copy of audio data */
int bits;
@@ -243,6 +245,29 @@ static void scale (complex wave[], int bits)
}
}
+/*
+ * Fade out a YUV pixel
+ */
+void fade_out_yuv(uint8_t *y, uint8_t *u, uint8_t *v, float factor) {
+ float r, g, b;
+
+ /* YUV -> RGB */
+ r = 1.164 * (*y - 16) + 1.596 * (*v - 128);
+ g = 1.164 * (*y - 16) - 0.813 * (*v - 128) - 0.391 * (*u - 128);
+ b = 1.164 * (*y - 16) + 2.018 * (*u - 128);
+
+ /* fade out by a 0.9 factor */
+ r *= factor;
+ g *= factor;
+ b *= factor;
+
+ /* RGB -> YUV */
+ *y = (uint8_t)((0.257 * r) + (0.504 * g) + (0.098 * b) + 16);
+ *u = (uint8_t)(-(0.148 * r) - (0.291 * g) + (0.439 * b) + 128);
+ *v = (uint8_t)((0.439 * r) - (0.368 * g) - (0.071 * b) + 128);
+}
+
+
static void draw_fftscope(post_plugin_fftscope_t *this, vo_frame_t *frame) {
int i, j, c;
@@ -296,12 +321,6 @@ static void draw_fftscope(post_plugin_fftscope_t *this, vo_frame_t *frame) {
(0x7F << 8) |
this->v_current);
- yuy2_pair_max = be2me_32(
- (0x0F << 24) |
- (this->u_current << 16) |
- (0x0F << 8) |
- this->v_current);
-
yuy2_white = be2me_32(
(0xFF << 24) |
(0x80 << 16) |
@@ -333,17 +352,28 @@ static void draw_fftscope(post_plugin_fftscope_t *this, vo_frame_t *frame) {
((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]);
for (j = amp_int; j < this->amp_max[c][i]; j++, map_ptr -= FFT_WIDTH / 2)
- ((uint32_t *)frame->base[0])[map_ptr] = this->amp_max_yuy2[c][i];
+ ((uint32_t *)frame->base[0])[map_ptr] = yuy2_pair_max;
/* white top max */
((uint32_t *)frame->base[0])[map_ptr] = yuy2_white;
if (amp_int > this->amp_max[c][i]) {
this->amp_max[c][i] = amp_int - 1;
- this->amp_max_yuy2[c][i] = yuy2_pair_max;
+ 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);
} else {
this->amp_max[c][i]--;
+ fade_out_yuv(&this->amp_max_y[c][i], &this->amp_max_u[c][i],
+ &this->amp_max_v[c][i], 0.95);
}
}
}
@@ -377,7 +407,7 @@ static int fftscope_rewire_audio(xine_post_out_t *output_gen, void *data)
xine_audio_port_t *old_port = *(xine_audio_port_t **)output_gen->data;
xine_audio_port_t *new_port = (xine_audio_port_t *)data;
post_plugin_fftscope_t *this = (post_plugin_fftscope_t *)output->post;
-
+
if (!data)
return 0;
if (this->stream) {
@@ -396,7 +426,7 @@ static int fftscope_rewire_video(xine_post_out_t *output_gen, void *data)
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;
if (this->stream) {
@@ -423,7 +453,7 @@ static int mode_channels( int mode ) {
return 6;
}
return 0;
-}
+}
static int fftscope_port_open(xine_audio_port_t *port_gen, xine_stream_t *stream,
uint32_t bits, uint32_t rate, int mode) {
@@ -437,7 +467,7 @@ static int fftscope_port_open(xine_audio_port_t *port_gen, xine_stream_t *stream
if( this->channels > MAXCHANNELS )
this->channels = MAXCHANNELS;
this->samples_per_frame = rate / FPS;
- this->sample_rate = rate;
+ this->sample_rate = rate;
this->stream = stream;
this->data_idx = 0;
fft_init(LOG_BITS);
@@ -451,7 +481,7 @@ static void fftscope_port_close(xine_audio_port_t *port_gen, xine_stream_t *stre
post_plugin_fftscope_t *this = (post_plugin_fftscope_t *)port->post;
this->stream = NULL;
-
+
port->original_port->close(port->original_port, stream );
}
@@ -466,32 +496,32 @@ static void fftscope_port_put_buffer (xine_audio_port_t *port_gen,
int samples_used = 0;
uint64_t vpts = 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,
+ memcpy(this->buf.mem, buf->mem,
buf->num_frames*this->channels*((this->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 );
-
+ 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;
+ buf = &this->buf;
this->sample_counter += buf->num_frames;
-
+
do {
-
+
if( this->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 ) {
@@ -503,7 +533,7 @@ static void fftscope_port_put_buffer (xine_audio_port_t *port_gen,
} 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++){
@@ -512,13 +542,13 @@ static void fftscope_port_put_buffer (xine_audio_port_t *port_gen,
}
}
}
-
+
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,
XINE_VO_ASPECT_SQUARE, XINE_IMGFMT_YUY2,
VO_BOTH_FIELDS);
@@ -543,7 +573,7 @@ static void fftscope_dispose(post_plugin_t *this_gen)
if (this->stream)
port->close(port, this->stream);
-
+
free(this->post.xine_post.audio_input);
free(this->post.xine_post.video_input);
free(xine_list_first_content(this->post.input));
@@ -574,7 +604,7 @@ static post_plugin_t *fftscope_open_plugin(post_class_t *class_gen, int inputs,
free(outputv);
return NULL;
}
-
+
this->sample_counter = 0;
this->stream = NULL;
this->vo_port = video_target[0];
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-22 11:37:51 +0000