mirrors/pipewire
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/pipewire/pipewire.git synced 2025-11-01 22:58:50 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

jack: add jack_get_video_image_size extension

Browse source 
Add a JACK PipeWire extension to get the video size of the DSP
pipeline and use this instead of the hardcoded values in the example.
This commit is contained in:
Wim Taymans 2020-02-07 13:31:49 +01:00
parent 14fbd4f520
commit ed1cf46c31
4 changed files with 94 additions and 18 deletions
Download patch file Download diff file Expand all files Collapse all files

33
pipewire-jack/examples/video-dsp-play.c
View file

@ -29,10 +29,7 @@
#include <SDL2/SDL.h>
#include <jack/jack.h>
#define WIDTH 320
#define HEIGHT 240
#define BPP 16
#include <pipewire-jack-extensions.h>
#define MAX_BUFFERS 64
@ -62,9 +59,7 @@ struct data {
const char *client_name;
jack_port_t *in_port;
uint32_t width;
uint32_t height;
int32_t stride;
jack_image_size_t size;
int counter;
SDL_Rect rect;
@ -102,14 +97,14 @@ process (jack_nframes_t nframes, void *arg)
}
/* copy video image in texture */
sstride = data->stride;
sstride = data->size.stride;
src = sdata;
dst = ddata;
for (i = 0; i < data->height; i++) {
for (i = 0; i < data->size.height; i++) {
struct pixel *p = (struct pixel *) src;
for (j = 0; j < data->width; j++) {
for (j = 0; j < data->size.width; j++) {
dst[j * 4 + 0] = CLAMP(lrintf(p[j].r * 255.0f), 0, 255);
dst[j * 4 + 1] = CLAMP(lrintf(p[j].g * 255.0f), 0, 255);
dst[j * 4 + 2] = CLAMP(lrintf(p[j].b * 255.0f), 0, 255);
@ -133,6 +128,7 @@ int main(int argc, char *argv[])
struct data data = { 0, };
jack_options_t options = JackNullOption;
jack_status_t status;
int res;
data.client = jack_client_open ("video-dsp-play", options, &status);
if (data.client == NULL) {
@ -153,9 +149,10 @@ int main(int argc, char *argv[])
jack_set_process_callback (data.client, process, &data);
data.width = WIDTH;
data.height = HEIGHT;
data.stride = data.width * 4 * sizeof(float);
if ((res = jack_get_video_image_size(data.client, &data.size)) < 0) {
fprintf(stderr, "can't get video size: %d %s\n", res, strerror(-res));
return -1;
}
if (SDL_Init(SDL_INIT_VIDEO) < 0) {
fprintf(stderr, "can't initialize SDL: %s\n", SDL_GetError());
@ -163,7 +160,7 @@ int main(int argc, char *argv[])
}
if (SDL_CreateWindowAndRenderer
(WIDTH, HEIGHT, SDL_WINDOW_RESIZABLE, &data.window, &data.renderer)) {
(data.size.width, data.size.height, SDL_WINDOW_RESIZABLE, &data.window, &data.renderer)) {
fprintf(stderr, "can't create window: %s\n", SDL_GetError());
return -1;
}
@ -171,12 +168,12 @@ int main(int argc, char *argv[])
data.texture = SDL_CreateTexture(data.renderer,
SDL_PIXELFORMAT_RGBA32,
SDL_TEXTUREACCESS_STREAMING,
data.width,
data.height);
data.size.width,
data.size.height);
data.rect.x = 0;
data.rect.y = 0;
data.rect.w = data.width;
data.rect.h = data.height;
data.rect.w = data.size.width;
data.rect.h = data.size.height;
data.in_port = jack_port_register (data.client, "input",
JACK_DEFAULT_VIDEO_TYPE,