#include <stdio.h>
#include <unistd.h>
#include <sys/mman.h>
#define WIDTH 640
#define HEIGHT 480
#define BPP 3
#define MAX_BUFFERS 64
#include "sdl.h"
struct pixel {
float r, g, b, a;
};
struct data {
const char *target;
SDL_Renderer *renderer;
SDL_Window *window;
SDL_Texture *texture;
SDL_Texture *cursor;
void *in_port;
int counter;
SDL_Rect rect;
SDL_Rect cursor_rect;
};
static void handle_events(struct data *data)
{
SDL_Event event;
while (SDL_PollEvent(&event)) {
switch (event.type) {
case SDL_QUIT:
break;
}
}
}
static void
{
struct data *data = _data;
void *sdata, *ddata;
int sstride, dstride;
uint32_t i, j;
uint8_t *src, *dst;
b = NULL;
while (true) {
break;
if (b)
b = t;
}
if (b == NULL) {
return;
}
data->position->video.size.width, data->position->video.size.height);
handle_events(data);
goto done;
}
if (SDL_LockTexture(data->texture, NULL, &ddata, &dstride) < 0) {
goto done;
}
src = sdata;
dst = ddata;
for (i = 0; i < data->position->video.size.height; i++) {
struct pixel *p = (struct pixel *) src;
for (j = 0; j < data->position->video.size.width; j++) {
dst[j * 4 + 0] =
SPA_CLAMP(p[j].r * 255.0f, 0, 255);
dst[j * 4 + 1] =
SPA_CLAMP(p[j].g * 255.0f, 0, 255);
dst[j * 4 + 2] =
SPA_CLAMP(p[j].b * 255.0f, 0, 255);
dst[j * 4 + 3] =
SPA_CLAMP(p[j].a * 255.0f, 0, 255);
}
src += sstride;
dst += dstride;
}
SDL_UnlockTexture(data->texture);
SDL_RenderClear(data->renderer);
SDL_RenderCopy(data->renderer, data->texture, &data->rect, NULL);
SDL_RenderPresent(data->renderer);
done:
}
{
struct data *data = _data;
switch (state) {
break;
default:
break;
}
}
static void
on_filter_io_changed(void *_data, void *port_data, uint32_t id, void *area, uint32_t size)
{
struct data *data = _data;
switch (id) {
data->position = area;
break;
}
}
static void
on_filter_param_changed(
void *_data,
void *port_data, uint32_t
id,
const struct spa_pod *param)
{
struct data *data = _data;
return;
return;
}
data->texture = SDL_CreateTexture(data->renderer,
SDL_PIXELFORMAT_RGBA32,
SDL_TEXTUREACCESS_STREAMING,
data->position->video.size.width,
data->position->video.size.height);
if (data->texture == NULL) {
return;
}
data->rect.x = 0;
data->rect.y = 0;
data->rect.w = data->position->video.size.width;
data->rect.h = data->position->video.size.height;
}
.state_changed = on_filter_state_changed,
.io_changed = on_filter_io_changed,
.param_changed = on_filter_param_changed,
.process = on_process,
};
int main(int argc, char *argv[])
{
struct data data = { 0, };
data.target = argc > 1 ? argv[1] : NULL;
"video-dsp-play",
NULL),
&filter_events,
&data);
if (SDL_Init(SDL_INIT_VIDEO) < 0) {
fprintf(stderr, "can't initialize SDL: %s\n", SDL_GetError());
return -1;
}
if (SDL_CreateWindowAndRenderer
(WIDTH, HEIGHT, SDL_WINDOW_RESIZABLE, &data.window, &data.renderer)) {
fprintf(stderr, "can't create window: %s\n", SDL_GetError());
return -1;
}
0,
NULL),
NULL, 0);
0,
NULL, 0);
SDL_DestroyTexture(data.texture);
if (data.cursor)
SDL_DestroyTexture(data.cursor);
SDL_DestroyRenderer(data.renderer);
SDL_DestroyWindow(data.window);
return 0;
}