771 lines
24 KiB
C
771 lines
24 KiB
C
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/*
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Copyright (C) 1997-2023 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely.
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*/
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#include "SDL3/SDL_main.h"
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#include "SDL3/SDL.h"
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#include "SDL3/SDL_test.h"
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#include "SDL3/SDL_video_capture.h"
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#include <stdio.h>
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#ifdef __EMSCRIPTEN__
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#include <emscripten/emscripten.h>
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#endif
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static const char *usage = "\
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\n\
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=========================================================================\n\
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\n\
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Use keyboards:\n\
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o: open first video capture device. (close previously opened)\n\
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l: switch to, and list video capture devices\n\
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i: information about status (Init, Playing, Stopped)\n\
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f: formats and resolutions available\n\
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s: start / stop capture\n\
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h: display help\n\
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esc: exit \n\
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\n\
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=========================================================================\n\
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\n\
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";
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typedef struct {
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Uint64 next_check;
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int frame_counter;
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int check_delay;
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double last_fps;
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} measure_fps_t;
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static void
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update_fps(measure_fps_t *m)
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{
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Uint64 now = SDL_GetTicks();
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Uint64 deadline;
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m->frame_counter++;
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if (m->check_delay == 0) {
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m->check_delay = 1500;
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}
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deadline = m->next_check;
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if (now >= deadline) {
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/* Print out some timing information */
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const Uint64 then = m->next_check - m->check_delay;
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m->last_fps = ((double) m->frame_counter * 1000) / (now - then);
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m->next_check = now + m->check_delay;
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m->frame_counter = 0;
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}
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}
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#if defined(__linux__) && !defined(__ANDROID__)
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static void load_average(float *val)
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{
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FILE *fp = 0;
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char line[1024];
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fp = fopen("/proc/loadavg", "rt");
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if (fp) {
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char *s = fgets(line, sizeof(line), fp);
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if (s) {
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SDL_sscanf(s, "%f", val);
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}
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fclose(fp);
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}
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}
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#endif
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struct data_capture_t {
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SDL_VideoCaptureDevice *device;
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SDL_VideoCaptureSpec obtained;
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int stopped;
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SDL_VideoCaptureFrame frame_current;
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measure_fps_t fps_capture;
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SDL_Texture *texture;
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int texture_updated;
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};
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#define SAVE_CAPTURE_STATE(x) \
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data_capture_tab[(x)].device = device; \
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data_capture_tab[(x)].obtained = obtained; \
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data_capture_tab[(x)].stopped = stopped; \
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data_capture_tab[(x)].frame_current = frame_current; \
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data_capture_tab[(x)].fps_capture = fps_capture; \
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data_capture_tab[(x)].texture = texture; \
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data_capture_tab[(x)].texture_updated = texture_updated; \
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#define RESTORE_CAPTURE_STATE(x) \
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device = data_capture_tab[(x)].device; \
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obtained = data_capture_tab[(x)].obtained; \
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stopped = data_capture_tab[(x)].stopped; \
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frame_current = data_capture_tab[(x)].frame_current; \
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fps_capture = data_capture_tab[(x)].fps_capture; \
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texture = data_capture_tab[(x)].texture; \
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texture_updated = data_capture_tab[(x)].texture_updated; \
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static SDL_VideoCaptureDeviceID get_instance_id(int index) {
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int ret = 0;
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int num = 0;
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SDL_VideoCaptureDeviceID *devices;
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devices = SDL_GetVideoCaptureDevices(&num);
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if (devices) {
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if (index >= 0 && index < num) {
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ret = devices[index];
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}
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SDL_free(devices);
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}
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if (ret == 0) {
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SDL_Log("invalid index");
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}
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return ret;
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}
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int main(int argc, char **argv)
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{
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SDL_Window *window = NULL;
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SDL_Renderer *renderer = NULL;
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SDL_Event evt;
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int quit = 0;
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SDLTest_CommonState *state;
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int current_dev = 0;
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measure_fps_t fps_main;
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SDL_FRect r_playstop = { 50, 50, 120, 50 };
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SDL_FRect r_close = { 50 + (120 + 50) * 1, 50, 120, 50 };
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SDL_FRect r_open = { 50 + (120 + 50) * 2, 50, 120, 50 };
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SDL_FRect r_format = { 50 + (120 + 50) * 3, 50, 120, 50 };
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SDL_FRect r_listdev = { 50 + (120 + 50) * 4, 50, 120, 50 };
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SDL_VideoCaptureDevice *device;
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SDL_VideoCaptureSpec obtained;
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int stopped = 0;
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SDL_VideoCaptureFrame frame_current;
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measure_fps_t fps_capture;
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SDL_Texture *texture = NULL;
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int texture_updated = 0;
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struct data_capture_t data_capture_tab[16];
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const int data_capture_tab_size = SDL_arraysize(data_capture_tab);
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SDL_zero(fps_main);
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SDL_zero(fps_capture);
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SDL_zero(frame_current);
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SDL_zeroa(data_capture_tab);
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/* Set 0 to disable TouchEvent to be duplicated as MouseEvent with SDL_TOUCH_MOUSEID */
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SDL_SetHint(SDL_HINT_TOUCH_MOUSE_EVENTS, "0");
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/* Set 0 to disable MouseEvent to be duplicated as TouchEvent with SDL_MOUSE_TOUCHID */
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SDL_SetHint(SDL_HINT_MOUSE_TOUCH_EVENTS, "0");
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{
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int i;
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for (i = 0; i < data_capture_tab_size; i++) {
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data_capture_tab[i].device = NULL;
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}
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}
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/* Initialize test framework */
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state = SDLTest_CommonCreateState(argv, 0);
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if (state == NULL) {
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return 1;
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}
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/* Enable standard application logging */
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SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
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/* Parse commandline */
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{
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int i;
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for (i = 1; i < argc;) {
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int consumed;
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consumed = SDLTest_CommonArg(state, i);
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if (consumed <= 0) {
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static const char *options[] = {NULL};
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SDLTest_CommonLogUsage(state, argv[0], options);
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SDLTest_CommonDestroyState(state);
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return 1;
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}
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i += consumed;
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}
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}
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SDL_Log("%s", usage);
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/* Load the SDL library */
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if (SDL_Init(SDL_INIT_VIDEO) < 0) {
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SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s", SDL_GetError());
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return 1;
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}
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window = SDL_CreateWindow("Local Video", 1000, 800, 0);
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if (window == NULL) {
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SDL_Log("Couldn't create window: %s", SDL_GetError());
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return 1;
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}
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SDL_LogSetAllPriority(SDL_LOG_PRIORITY_VERBOSE);
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renderer = SDL_CreateRenderer(window, NULL, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
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if (renderer == NULL) {
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/* SDL_Log("Couldn't create renderer: %s", SDL_GetError()); */
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return 1;
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}
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SDL_LogSetAllPriority(SDL_LOG_PRIORITY_INFO);
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device = SDL_OpenVideoCapture(0);
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if (!device) {
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SDL_Log("Error SDL_OpenVideoCapture: %s", SDL_GetError());
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}
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{
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/* List formats */
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int i, num = SDL_GetNumVideoCaptureFormats(device);
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for (i = 0; i < num; i++) {
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Uint32 format;
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SDL_GetVideoCaptureFormat(device, i, &format);
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SDL_Log("format %d/%d: %s", i, num, SDL_GetPixelFormatName(format));
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{
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int w, h;
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int j, num2 = SDL_GetNumVideoCaptureFrameSizes(device, format);
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for (j = 0; j < num2; j++) {
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SDL_GetVideoCaptureFrameSize(device, format, j, &w, &h);
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SDL_Log(" framesizes %d/%d : %d x %d", j, num2, w, h);
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}
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}
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}
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}
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/* Set Spec */
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{
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int ret;
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/* forced_format */
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SDL_VideoCaptureSpec desired;
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SDL_zero(desired);
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desired.width = 640 * 2;
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desired.height = 360 * 2;
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desired.format = SDL_PIXELFORMAT_NV12;
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ret = SDL_SetVideoCaptureSpec(device, &desired, &obtained, SDL_VIDEO_CAPTURE_ALLOW_ANY_CHANGE);
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if (ret < 0) {
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SDL_SetVideoCaptureSpec(device, NULL, &obtained, 0);
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}
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}
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SDL_Log("Open capture video device. Obtained spec: size=%d x %d format=%s",
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obtained.width, obtained.height, SDL_GetPixelFormatName(obtained.format));
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{
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SDL_VideoCaptureSpec spec;
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if (SDL_GetVideoCaptureSpec(device, &spec) == 0) {
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SDL_Log("Read spec: size=%d x %d format=%s",
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spec.width, spec.height, SDL_GetPixelFormatName(spec.format));
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} else {
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SDL_Log("Error read spec: %s", SDL_GetError());
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}
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}
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if (SDL_StartVideoCapture(device) < 0) {
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SDL_Log("error SDL_StartVideoCapture(): %s", SDL_GetError());
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}
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while (!quit) {
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SDL_SetRenderDrawColor(renderer, 0x99, 0x99, 0x99, 255);
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SDL_RenderClear(renderer);
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SDL_SetRenderDrawColor(renderer, 0x33, 0x33, 0x33, 255);
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SDL_RenderFillRect(renderer, &r_playstop);
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SDL_RenderFillRect(renderer, &r_close);
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SDL_RenderFillRect(renderer, &r_open);
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SDL_RenderFillRect(renderer, &r_format);
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SDL_RenderFillRect(renderer, &r_listdev);
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SDL_SetRenderDrawColor(renderer, 0xcc, 0xcc, 0xcc, 255);
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SDLTest_DrawString(renderer, r_playstop.x + 5, r_playstop.y + 5, "play stop");
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SDLTest_DrawString(renderer, r_close.x + 5, r_close.y + 5, "close");
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SDLTest_DrawString(renderer, r_open.x + 5, r_open.y + 5, "open dev");
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SDLTest_DrawString(renderer, r_format.x + 5, r_format.y + 5, "formats");
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{
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char buf[256];
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SDL_snprintf(buf, 256, "device %d", current_dev);
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SDLTest_DrawString(renderer, r_listdev.x + 5, r_listdev.y + 5, buf);
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}
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while (SDL_PollEvent(&evt)) {
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SDL_FRect *r = NULL;
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SDL_FPoint pt;
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int sym = 0;
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pt.x = 0;
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pt.y = 0;
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SDL_ConvertEventToRenderCoordinates(renderer, &evt);
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switch (evt.type)
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{
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case SDL_EVENT_KEY_DOWN:
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{
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sym = evt.key.keysym.sym;
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break;
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}
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case SDL_EVENT_QUIT:
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{
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quit = 1;
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SDL_Log("Ctlr+C : Quit!");
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}
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break;
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case SDL_EVENT_FINGER_DOWN:
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{
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pt.x = evt.tfinger.x;
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pt.y = evt.tfinger.y;
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}
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break;
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case SDL_EVENT_MOUSE_BUTTON_DOWN:
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{
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pt.x = evt.button.x;
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pt.y = evt.button.y;
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}
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break;
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}
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if (pt.x != 0 && pt.y != 0) {
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if (SDL_PointInRectFloat(&pt, &r_playstop)) {
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r = &r_playstop;
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sym = SDLK_s;
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}
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if (SDL_PointInRectFloat(&pt, &r_close)) {
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r = &r_close;
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sym = SDLK_c;
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}
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if (SDL_PointInRectFloat(&pt, &r_open)) {
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r = &r_open;
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sym = SDLK_o;
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}
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if (SDL_PointInRectFloat(&pt, &r_format)) {
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r = &r_format;
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sym = SDLK_f;
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}
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if (SDL_PointInRectFloat(&pt, &r_listdev)) {
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r = &r_listdev;
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sym = SDLK_l;
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}
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}
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|
|
|
||
|
|
if (r) {
|
||
|
|
SDL_SetRenderDrawColor(renderer, 0x33, 0, 0, 255);
|
||
|
|
SDL_RenderFillRect(renderer, r);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
if (sym == SDLK_c) {
|
||
|
|
if (frame_current.num_planes) {
|
||
|
|
SDL_ReleaseVideoCaptureFrame(device, &frame_current);
|
||
|
|
}
|
||
|
|
SDL_CloseVideoCapture(device);
|
||
|
|
device = NULL;
|
||
|
|
SDL_Log("Close");
|
||
|
|
}
|
||
|
|
|
||
|
|
if (sym == SDLK_o) {
|
||
|
|
if (device) {
|
||
|
|
SDL_Log("Close previous ..");
|
||
|
|
if (frame_current.num_planes) {
|
||
|
|
SDL_ReleaseVideoCaptureFrame(device, &frame_current);
|
||
|
|
}
|
||
|
|
SDL_CloseVideoCapture(device);
|
||
|
|
}
|
||
|
|
|
||
|
|
texture_updated = 0;
|
||
|
|
|
||
|
|
SDL_ClearError();
|
||
|
|
|
||
|
|
SDL_Log("Try to open:%s", SDL_GetVideoCaptureDeviceName(get_instance_id(current_dev)));
|
||
|
|
|
||
|
|
obtained.width = 640 * 2;
|
||
|
|
obtained.height = 360 * 2;
|
||
|
|
device = SDL_OpenVideoCaptureWithSpec(get_instance_id(current_dev), &obtained, &obtained, SDL_VIDEO_CAPTURE_ALLOW_ANY_CHANGE);
|
||
|
|
|
||
|
|
/* spec may have changed because of re-open */
|
||
|
|
if (texture) {
|
||
|
|
SDL_DestroyTexture(texture);
|
||
|
|
texture = NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
SDL_Log("Open device:%p %s", (void*)device, SDL_GetError());
|
||
|
|
stopped = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (sym == SDLK_l) {
|
||
|
|
int num = 0;
|
||
|
|
SDL_VideoCaptureDeviceID *devices;
|
||
|
|
int i;
|
||
|
|
devices = SDL_GetVideoCaptureDevices(&num);
|
||
|
|
|
||
|
|
SDL_Log("Num devices : %d", num);
|
||
|
|
for (i = 0; i < num; i++) {
|
||
|
|
SDL_Log("Device %d/%d : %s", i, num, SDL_GetVideoCaptureDeviceName(devices[i]));
|
||
|
|
}
|
||
|
|
SDL_free(devices);
|
||
|
|
|
||
|
|
SAVE_CAPTURE_STATE(current_dev);
|
||
|
|
|
||
|
|
current_dev += 1;
|
||
|
|
if (current_dev == num || current_dev >= (int) SDL_arraysize(data_capture_tab)) {
|
||
|
|
current_dev = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
RESTORE_CAPTURE_STATE(current_dev);
|
||
|
|
SDL_Log("--> select dev %d / %d", current_dev, num);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (sym == SDLK_i) {
|
||
|
|
SDL_VideoCaptureStatus status = SDL_GetVideoCaptureStatus(device);
|
||
|
|
if (status == SDL_VIDEO_CAPTURE_STOPPED) { SDL_Log("STOPPED"); }
|
||
|
|
if (status == SDL_VIDEO_CAPTURE_PLAYING) { SDL_Log("PLAYING"); }
|
||
|
|
if (status == SDL_VIDEO_CAPTURE_INIT) { SDL_Log("INIT"); }
|
||
|
|
}
|
||
|
|
|
||
|
|
if (sym == SDLK_s) {
|
||
|
|
if (stopped) {
|
||
|
|
SDL_Log("Stop");
|
||
|
|
SDL_StopVideoCapture(device);
|
||
|
|
} else {
|
||
|
|
SDL_Log("Start");
|
||
|
|
SDL_StartVideoCapture(device);
|
||
|
|
}
|
||
|
|
stopped = !stopped;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (sym == SDLK_f) {
|
||
|
|
SDL_Log("List formats");
|
||
|
|
|
||
|
|
if (!device) {
|
||
|
|
device = SDL_OpenVideoCapture(get_instance_id(current_dev));
|
||
|
|
}
|
||
|
|
|
||
|
|
/* List formats */
|
||
|
|
{
|
||
|
|
int i, num = SDL_GetNumVideoCaptureFormats(device);
|
||
|
|
for (i = 0; i < num; i++) {
|
||
|
|
Uint32 format;
|
||
|
|
SDL_GetVideoCaptureFormat(device, i, &format);
|
||
|
|
SDL_Log("format %d/%d : %s", i, num, SDL_GetPixelFormatName(format));
|
||
|
|
{
|
||
|
|
int w, h;
|
||
|
|
int j, num2 = SDL_GetNumVideoCaptureFrameSizes(device, format);
|
||
|
|
for (j = 0; j < num2; j++) {
|
||
|
|
SDL_GetVideoCaptureFrameSize(device, format, j, &w, &h);
|
||
|
|
SDL_Log(" framesizes %d/%d : %d x %d", j, num2, w, h);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (sym == SDLK_ESCAPE || sym == SDLK_AC_BACK) {
|
||
|
|
quit = 1;
|
||
|
|
SDL_Log("Key : Escape!");
|
||
|
|
}
|
||
|
|
|
||
|
|
if (sym == SDLK_h || sym == SDLK_F1) {
|
||
|
|
SDL_Log("%s", usage);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
SAVE_CAPTURE_STATE(current_dev);
|
||
|
|
|
||
|
|
{
|
||
|
|
int i, n = SDL_arraysize(data_capture_tab);
|
||
|
|
for (i = 0; i < n; i++) {
|
||
|
|
RESTORE_CAPTURE_STATE(i);
|
||
|
|
|
||
|
|
if (!device) {
|
||
|
|
/* device has been closed */
|
||
|
|
frame_current.num_planes = 0;
|
||
|
|
texture_updated = 0;
|
||
|
|
} else {
|
||
|
|
int ret;
|
||
|
|
SDL_VideoCaptureFrame frame_next;
|
||
|
|
SDL_zero(frame_next);
|
||
|
|
|
||
|
|
ret = SDL_AcquireVideoCaptureFrame(device, &frame_next);
|
||
|
|
if (ret < 0) {
|
||
|
|
SDL_Log("dev[%d] err SDL_AcquireVideoCaptureFrame: %s", i, SDL_GetError());
|
||
|
|
}
|
||
|
|
#if 1
|
||
|
|
if (frame_next.num_planes) {
|
||
|
|
SDL_Log("dev[%d] frame: %p at %" SDL_PRIu64, i, (void*)frame_next.data[0], frame_next.timestampNS);
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
if (frame_next.num_planes) {
|
||
|
|
|
||
|
|
update_fps(&fps_capture);
|
||
|
|
|
||
|
|
if (frame_current.num_planes) {
|
||
|
|
ret = SDL_ReleaseVideoCaptureFrame(device, &frame_current);
|
||
|
|
if (ret < 0) {
|
||
|
|
SDL_Log("dev[%d] err SDL_ReleaseVideoCaptureFrame: %s", i, SDL_GetError());
|
||
|
|
}
|
||
|
|
}
|
||
|
|
frame_current = frame_next;
|
||
|
|
texture_updated = 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
SAVE_CAPTURE_STATE(i);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
RESTORE_CAPTURE_STATE(current_dev);
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
/* Moving square */
|
||
|
|
SDL_SetRenderDrawColor(renderer, 0, 0xff, 0, 255);
|
||
|
|
{
|
||
|
|
SDL_FRect r;
|
||
|
|
static float x = 0;
|
||
|
|
x += 10;
|
||
|
|
if (x > 1000) {
|
||
|
|
x = 0;
|
||
|
|
}
|
||
|
|
r.x = x;
|
||
|
|
r.y = 100;
|
||
|
|
r.w = r.h = 10;
|
||
|
|
SDL_RenderFillRect(renderer, &r);
|
||
|
|
}
|
||
|
|
|
||
|
|
SDL_SetRenderDrawColor(renderer, 0x33, 0x33, 0x33, 255);
|
||
|
|
|
||
|
|
|
||
|
|
SAVE_CAPTURE_STATE(current_dev);
|
||
|
|
|
||
|
|
{
|
||
|
|
int i, n = SDL_arraysize(data_capture_tab);
|
||
|
|
for (i = 0; i < n; i++) {
|
||
|
|
RESTORE_CAPTURE_STATE(i);
|
||
|
|
|
||
|
|
/* Update SDL_Texture with last video frame (only once per new frame) */
|
||
|
|
if (frame_current.num_planes && texture_updated == 0) {
|
||
|
|
|
||
|
|
/* Create texture with appropriate format (for DMABUF or not) */
|
||
|
|
if (texture == NULL) {
|
||
|
|
Uint32 format = obtained.format;
|
||
|
|
texture = SDL_CreateTexture(renderer, format, SDL_TEXTUREACCESS_STATIC, obtained.width, obtained.height);
|
||
|
|
if (texture == NULL) {
|
||
|
|
SDL_Log("Couldn't create texture: %s", SDL_GetError());
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
{
|
||
|
|
/* Use software data */
|
||
|
|
if (frame_current.num_planes == 1) {
|
||
|
|
SDL_UpdateTexture(texture, NULL,
|
||
|
|
frame_current.data[0], frame_current.pitch[0]);
|
||
|
|
} else if (frame_current.num_planes == 2) {
|
||
|
|
SDL_UpdateNVTexture(texture, NULL,
|
||
|
|
frame_current.data[0], frame_current.pitch[0],
|
||
|
|
frame_current.data[1], frame_current.pitch[1]);
|
||
|
|
} else if (frame_current.num_planes == 3) {
|
||
|
|
SDL_UpdateYUVTexture(texture, NULL, frame_current.data[0], frame_current.pitch[0],
|
||
|
|
frame_current.data[1], frame_current.pitch[1],
|
||
|
|
frame_current.data[2], frame_current.pitch[2]);
|
||
|
|
}
|
||
|
|
texture_updated = 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
SAVE_CAPTURE_STATE(i);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
RESTORE_CAPTURE_STATE(current_dev);
|
||
|
|
|
||
|
|
{
|
||
|
|
int i, n = SDL_arraysize(data_capture_tab);
|
||
|
|
int win_w, win_h;
|
||
|
|
int total_texture_updated = 0;
|
||
|
|
int curr_texture_updated = 0;
|
||
|
|
for (i = 0; i < n; i++) {
|
||
|
|
if (data_capture_tab[i].texture_updated) {
|
||
|
|
total_texture_updated += 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
SDL_GetRenderOutputSize(renderer, &win_w, &win_h);
|
||
|
|
|
||
|
|
|
||
|
|
for (i = 0; i < n; i++) {
|
||
|
|
RESTORE_CAPTURE_STATE(i);
|
||
|
|
/* RenderCopy the SDL_Texture */
|
||
|
|
if (texture_updated == 1) {
|
||
|
|
/* Scale texture to fit the screen */
|
||
|
|
|
||
|
|
int tw, th;
|
||
|
|
int w;
|
||
|
|
SDL_FRect d;
|
||
|
|
SDL_QueryTexture(texture, NULL, NULL, &tw, &th);
|
||
|
|
|
||
|
|
w = win_w / total_texture_updated;
|
||
|
|
|
||
|
|
if (tw > w - 20) {
|
||
|
|
float scale = (float) (w - 20) / (float) tw;
|
||
|
|
tw = w - 20;
|
||
|
|
th = (int)((float) th * scale);
|
||
|
|
}
|
||
|
|
d.x = (float)(10 + curr_texture_updated * w);
|
||
|
|
d.y = (float)(win_h - th);
|
||
|
|
d.w = (float)tw;
|
||
|
|
d.h = (float)(th - 10);
|
||
|
|
SDL_RenderTexture(renderer, texture, NULL, &d);
|
||
|
|
|
||
|
|
curr_texture_updated += 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
RESTORE_CAPTURE_STATE(current_dev);
|
||
|
|
|
||
|
|
|
||
|
|
/* display status and FPS */
|
||
|
|
if (!device) {
|
||
|
|
#ifdef __IOS__
|
||
|
|
const float x_offset = 500;
|
||
|
|
#else
|
||
|
|
const float x_offset = 0;
|
||
|
|
#endif
|
||
|
|
char buf[256];
|
||
|
|
SDL_snprintf(buf, 256, "Device %d (%s) is not opened", current_dev, SDL_GetVideoCaptureDeviceName(get_instance_id(current_dev)));
|
||
|
|
SDLTest_DrawString(renderer, x_offset + 10, 10, buf);
|
||
|
|
} else {
|
||
|
|
#ifdef __IOS__
|
||
|
|
const float x_offset = 500;
|
||
|
|
#else
|
||
|
|
const float x_offset = 0;
|
||
|
|
#endif
|
||
|
|
const char *status = "no status";
|
||
|
|
char buf[256];
|
||
|
|
|
||
|
|
if (device) {
|
||
|
|
SDL_VideoCaptureStatus s = SDL_GetVideoCaptureStatus(device);
|
||
|
|
if (s == SDL_VIDEO_CAPTURE_INIT) {
|
||
|
|
status = "init";
|
||
|
|
} else if (s == SDL_VIDEO_CAPTURE_PLAYING) {
|
||
|
|
status = "playing";
|
||
|
|
} else if (s == SDL_VIDEO_CAPTURE_STOPPED) {
|
||
|
|
status = "stopped";
|
||
|
|
} else if (s == SDL_VIDEO_CAPTURE_FAIL) {
|
||
|
|
status = "failed";
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
/* capture device, capture fps, capture status */
|
||
|
|
SDL_snprintf(buf, 256, "Device %d - %2.2f fps - %s", current_dev, fps_capture.last_fps, status);
|
||
|
|
SDLTest_DrawString(renderer, x_offset + 10, 10, buf);
|
||
|
|
|
||
|
|
/* capture spec */
|
||
|
|
SDL_snprintf(buf, sizeof(buf), "%d x %d %s", obtained.width, obtained.height, SDL_GetPixelFormatName(obtained.format));
|
||
|
|
SDLTest_DrawString(renderer, x_offset + 10, 20, buf);
|
||
|
|
|
||
|
|
/* video fps */
|
||
|
|
SDL_snprintf(buf, sizeof(buf), "%2.2f fps", fps_main.last_fps);
|
||
|
|
SDLTest_DrawString(renderer, x_offset + 10, 30, buf);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
/* display last error */
|
||
|
|
{
|
||
|
|
SDLTest_DrawString(renderer, 400, 10, SDL_GetError());
|
||
|
|
}
|
||
|
|
|
||
|
|
/* display load average */
|
||
|
|
#if defined(__linux__) && !defined(__ANDROID__)
|
||
|
|
{
|
||
|
|
float val = 0.0f;
|
||
|
|
char buf[128];
|
||
|
|
load_average(&val);
|
||
|
|
if (val != 0.0f) {
|
||
|
|
SDL_snprintf(buf, sizeof(buf), "load avg %2.2f percent", val);
|
||
|
|
SDLTest_DrawString(renderer, 800, 10, buf);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|
||
|
|
SDL_Delay(20);
|
||
|
|
SDL_RenderPresent(renderer);
|
||
|
|
|
||
|
|
update_fps(&fps_main);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
SAVE_CAPTURE_STATE(current_dev);
|
||
|
|
|
||
|
|
{
|
||
|
|
int i, n = SDL_arraysize(data_capture_tab);
|
||
|
|
for (i = 0; i < n; i++) {
|
||
|
|
RESTORE_CAPTURE_STATE(i);
|
||
|
|
|
||
|
|
if (device) {
|
||
|
|
if (SDL_StopVideoCapture(device) < 0) {
|
||
|
|
SDL_Log("error SDL_StopVideoCapture(): %s", SDL_GetError());
|
||
|
|
}
|
||
|
|
if (frame_current.num_planes) {
|
||
|
|
SDL_ReleaseVideoCaptureFrame(device, &frame_current);
|
||
|
|
}
|
||
|
|
SDL_CloseVideoCapture(device);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (texture) {
|
||
|
|
SDL_DestroyTexture(texture);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
SDL_DestroyRenderer(renderer);
|
||
|
|
SDL_DestroyWindow(window);
|
||
|
|
|
||
|
|
SDL_Quit();
|
||
|
|
|
||
|
|
SDLTest_CommonDestroyState(state);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|