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Added bleed 'n noise filter.

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This commit is contained in:
Themaister 2010-08-19 23:44:12 +02:00
parent 8c956f95a1
commit cb00f4b07e
5 changed files with 59 additions and 2 deletions
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1
Makefile
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@ -28,6 +28,7 @@ endif
ifeq ($(BUILD_FILTER), 1)
OBJ += hqflt/hq.o
OBJ += hqflt/grayscale.o
OBJ += hqflt/bleed.o
endif
CFLAGS = -Wall -O3 -march=native -std=gnu99

5
config.h
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@ -70,6 +70,7 @@ static const bool force_aspect = true;
#define FILTER_HQ2X 1
#define FILTER_HQ4X 2
#define FILTER_GRAYSCALE 3
#define FILTER_BLEED 4
////////////////////////
// If you change this to something other than FILTER_NONE, make sure that you build the filter module in config.mk.
@ -91,10 +92,10 @@ static const unsigned out_rate = 48000;
static const unsigned in_rate = 31950;
// Audio device (e.g. hw:0,0 or /dev/audio). If NULL, will use defaults.
static const char* audio_device = "hw:0";
static const char* audio_device = NULL;
// Desired audio latency in milliseconds. Might not be honored if driver can't provide given latency.
static const int out_latency = 16;
static const int out_latency = 64;
// Will sync audio. (recommended)
static const bool audio_sync = true;

45
hqflt/bleed.c Normal file
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@ -0,0 +1,45 @@
#include "bleed.h"
#include <stdlib.h>
#include <string.h>
void bleed_filter(uint16_t *data, int width, int height)
{
uint16_t tmp[4];
int ptr = 0;
uint16_t r[4];
uint16_t g[4];
uint16_t b[4];
uint16_t bleed_r;
uint16_t bleed_g;
uint16_t bleed_b;
float rand_map[4];
for (int h = 0; h < height; h++ )
{
memcpy(tmp, data, sizeof(tmp));
ptr = 3;
for (int i = 0; i < 4; i++)
{
rand_map[i] = (rand() % 20)/1000.0; // 0.02 * 4 = 0.08
}
for (int i = 3; i < width; i++, ptr++)
{
tmp[ptr & 0x3] = data[i];
for (int y = 0; y < 4; y++)
{
r[y] = (tmp[(ptr + y) & 0x3] >> 10) & 0x1F;
g[y] = (tmp[(ptr + y) & 0x3] >> 5) & 0x1F;
b[y] = (tmp[(ptr + y) & 0x3] >> 0) & 0x1F;
}
bleed_r = r[0] * (0.05 + rand_map[0] ) + r[1] * (0.10 + rand_map[1] ) + r[2] * (0.20 + rand_map[2]) + r[3] * (0.57 + rand_map[3] ); // 0.92
bleed_g = g[0] * (0.03 + rand_map[2]/3) + g[1] * (0.10 + rand_map[0]/3) + g[2] * (0.20 + rand_map[3]/3) + g[3] * (0.63 + rand_map[1]/3); // 0.96
bleed_b = b[0] * (0.05 + rand_map[3] ) + b[1] * (0.10 + rand_map[2] ) + b[2] * (0.20 + rand_map[1]) + b[3] * (0.57 + rand_map[0] ); // 0.92
data[i] = (bleed_r << 10) | (bleed_g << 5) | (bleed_b);
}
data += width;
}
}

3
hqflt/bleed.h Normal file
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@ -0,0 +1,3 @@
#include <stdint.h>
void bleed_filter(uint16_t *data, int width, int height);

7
ssnes.c
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@ -27,6 +27,7 @@
#include "driver.h"
#include "hqflt/pastlib.h"
#include "hqflt/grayscale.h"
#include "hqflt/bleed.h"
static bool video_active = true;
static bool audio_active = true;
@ -158,6 +159,8 @@ static void init_video_input(void)
scale = 4;
#elif VIDEO_FILTER == FILTER_GRAYSCALE
scale = 1;
#elif VIDEO_FILTER == FILTER_BLEED
scale = 1;
#else
scale = 1;
#endif
@ -242,6 +245,10 @@ static void video_frame(const uint16_t *data, unsigned width, unsigned height)
grayscale_filter(output, width, height);
if ( !driver.video->frame(driver.video_data, output, width, height) )
video_active = false;
#elif VIDEO_FILTER == FILTER_BLEED
bleed_filter(output, width, height);
if ( !driver.video->frame(driver.video_data, output, width, height) )
video_active = false;
#else
if ( !driver.video->frame(driver.video_data, output, width, height) )
video_active = false;