#include <stdio.h>
#include <unistd.h>
#include <sys/mman.h>
 
#include <spa/param/video/format-utils.h>
 
 
#define WIDTH   640
#define HEIGHT  480
#define BPP    3
 
#define MAX_BUFFERS     64
 
#include "sdl.h"
 
struct pixel {
};
 
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;
        }
 
        
        if (sstride == 0)
                sstride = buf->
datas[0].
chunk->
size / data->position->video.size.height;
 
        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((uint8_t)(p[j].
r * 255.0f), 0, 255);
                        dst[j * 4 + 1] = 
SPA_CLAMP((uint8_t)(p[j].g * 255.0f), 0, 255);
                        dst[j * 4 + 2] = 
SPA_CLAMP((uint8_t)(p[j].b * 255.0f), 0, 255);
                        dst[j * 4 + 3] = 
SPA_CLAMP((uint8_t)(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;
}
uint32_t int int const char int r
Definition core.h:447
const char * pw_filter_state_as_string(enum pw_filter_state state)
Convert a filter state to a readable string.
Definition filter.c:1338
int pw_filter_connect(struct pw_filter *filter, enum pw_filter_flags flags, const struct spa_pod **params, uint32_t n_params)
Connect a filter for processing.
Definition filter.c:1562
int pw_filter_queue_buffer(void *port_data, struct pw_buffer *buffer)
Submit a buffer for playback or recycle a buffer for capture.
Definition filter.c:2022
pw_filter_state
The state of a filter.
Definition filter.h:43
void * pw_filter_add_port(struct pw_filter *filter, enum pw_direction direction, enum pw_filter_port_flags flags, size_t port_data_size, struct pw_properties *props, const struct spa_pod **params, uint32_t n_params)
add a port to the filter, returns user data of port_data_size.
Definition filter.c:1803
#define PW_VERSION_FILTER_EVENTS
Definition filter.h:67
struct pw_buffer * pw_filter_dequeue_buffer(void *port_data)
Get a buffer that can be filled for output ports or consumed for input ports.
Definition filter.c:2004
int pw_filter_set_error(struct pw_filter *filter, int res, const char *error,...)
Set the filter in error state.
Definition filter.c:1894
void pw_filter_destroy(struct pw_filter *filter)
Destroy a filter.
Definition filter.c:1397
struct pw_filter * pw_filter_new_simple(struct pw_loop *loop, const char *name, struct pw_properties *props, const struct pw_filter_events *events, void *data)
Definition filter.c:1293
@ PW_FILTER_PORT_FLAG_MAP_BUFFERS
mmap the buffers except DmaBuf that is not explicitly marked as mappable.
Definition filter.h:134
@ PW_FILTER_STATE_UNCONNECTED
unconnected
Definition filter.h:45
#define PW_KEY_PORT_NAME
port name
Definition keys.h:337
#define PW_KEY_MEDIA_TYPE
Media.
Definition keys.h:499
#define PW_KEY_NODE_AUTOCONNECT
node wants to be automatically connected to a compatible node
Definition keys.h:237
#define PW_KEY_TARGET_OBJECT
a target object to link to.
Definition keys.h:566
#define PW_KEY_MEDIA_ROLE
Role: Movie, Music, Camera, Screen, Communication, Game, Notification, DSP, Production,...
Definition keys.h:505
#define PW_KEY_MEDIA_CATEGORY
Media Category: Playback, Capture, Duplex, Monitor, Manager.
Definition keys.h:502
#define PW_KEY_FORMAT_DSP
format related properties
Definition keys.h:542
#define PW_KEY_MEDIA_CLASS
class Ex: "Video/Source"
Definition keys.h:510
#define pw_log_trace(...)
Definition log.h:182
#define pw_log_warn(...)
Definition log.h:179
#define pw_log_error(...)
Definition log.h:178
int pw_main_loop_quit(struct pw_main_loop *loop)
Quit a main loop.
Definition main-loop.c:108
void pw_main_loop_destroy(struct pw_main_loop *loop)
Destroy a loop.
Definition main-loop.c:73
int pw_main_loop_run(struct pw_main_loop *loop)
Run a main loop.
Definition main-loop.c:122
struct pw_main_loop * pw_main_loop_new(const struct spa_dict *props)
Create a new main loop.
Definition main-loop.c:63
struct pw_loop * pw_main_loop_get_loop(struct pw_main_loop *loop)
Get the loop implementation.
Definition main-loop.c:96
void pw_init(int *argc, char **argv[])
Initialize PipeWire.
Definition pipewire.c:488
#define PW_DIRECTION_INPUT
Definition port.h:53
struct pw_properties * pw_properties_new(const char *key,...)
Make a new properties object.
Definition properties.c:97
@ SPA_IO_Position
position information in the graph, struct spa_io_position
Definition io.h:45
SPA_API_VIDEO_DSP_UTILS int spa_format_video_dsp_parse(const struct spa_pod *format, struct spa_video_info_dsp *info)
Definition dsp-utils.h:37
@ SPA_PARAM_Format
configured format as SPA_TYPE_OBJECT_Format
Definition param.h:34
@ SPA_VIDEO_FORMAT_RGBA_F32
Definition raw.h:125
#define SPA_CLAMP(v, low, high)
Definition defs.h:177
a buffer structure obtained from pw_stream_dequeue_buffer().
Definition stream.h:261
struct spa_buffer * buffer
the spa buffer
Definition stream.h:262
Events for a filter.
Definition filter.h:65
A Buffer.
Definition buffer.h:110
struct spa_data * datas
array of data members
Definition buffer.h:114
int32_t stride
stride of valid data
Definition buffer.h:65
uint32_t size
size of valid data.
Definition buffer.h:63
struct spa_chunk * chunk
valid chunk of memory
Definition buffer.h:106
void * data
optional data pointer
Definition buffer.h:105
A hook, contains the structure with functions and the data passed to the functions.
Definition hook.h:427
The position information adds extra meaning to the raw clock times.
Definition io.h:316