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cgbwebcam
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clean up c

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lif 2024-03-03 01:41:29 -08:00
parent cbac106862
commit 6928958d30
2 changed files with 49 additions and 52 deletions
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2
CMakeLists.txt
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@ -34,5 +34,7 @@ add_subdirectory(mgba)
include_directories(SDL/include) include_directories(SDL/include)
include_directories(mgba/include) include_directories(mgba/include)
#set_source_files_properties(main.c PROPERTIES COMPILE_FLAGS "-Wall -Werror -pedantic -std=c89")
add_executable(cgbwebcam main.c) add_executable(cgbwebcam main.c)
target_link_libraries(cgbwebcam SDL3-static mgba) target_link_libraries(cgbwebcam SDL3-static mgba)

99
main.c
View File

@ -1,5 +1,3 @@
#include <stdint.h>
#define SDL_MAIN_USE_CALLBACKS 1 #define SDL_MAIN_USE_CALLBACKS 1
#include "SDL3/SDL_blendmode.h" #include "SDL3/SDL_blendmode.h"
#include "SDL3/SDL_error.h" #include "SDL3/SDL_error.h"
@ -22,6 +20,14 @@
#define NUM_CHANNELS 3 #define NUM_CHANNELS 3
#define FRAMESKIP_LIMIT 20 #define FRAMESKIP_LIMIT 20
#if BYTES_PER_PIXEL == 4
#define SCREEN_FMT SDL_PIXELFORMAT_XBGR8888
#elif BYTES_PER_PIXEL == 2
#define SCREEN_FMT SDL_PIXELFORMAT_XBGR1555
#else
#error "unknown pixel format"
#endif
static SDL_Window* window = NULL; static SDL_Window* window = NULL;
static SDL_Renderer* renderer = NULL; static SDL_Renderer* renderer = NULL;
static SDL_Camera* camera = NULL; static SDL_Camera* camera = NULL;
@ -52,9 +58,9 @@ enum mColorFormat pixfmt_sdl_to_mgba(uint32_t sdl_fmt) {
case SDL_PIXELFORMAT_XBGR8888: return mCOLOR_XBGR8; case SDL_PIXELFORMAT_XBGR8888: return mCOLOR_XBGR8;
case SDL_PIXELFORMAT_XRGB1555: return mCOLOR_RGB5; case SDL_PIXELFORMAT_XRGB1555: return mCOLOR_RGB5;
case SDL_PIXELFORMAT_XRGB8888: return mCOLOR_XRGB8; case SDL_PIXELFORMAT_XRGB8888: return mCOLOR_XRGB8;
// does this even make sense? /* does this even make sense? */
case SDL_PIXELFORMAT_INDEX8: return mCOLOR_PAL8; case SDL_PIXELFORMAT_INDEX8: return mCOLOR_PAL8;
// others don't quite match between mgba and SDL /* others don't quite match between mgba and SDL */
default: return mCOLOR_ANY; default: return mCOLOR_ANY;
} }
} }
@ -123,27 +129,15 @@ void myRequestImageBlue(struct mImageSource* self, const void** buf, size_t* str
} }
} }
const struct mImageSource gb_img_src[3] = { struct mImageSource gb_img_src[3];
{
.requestImage = myRequestImageRed,
.startRequestImage = myStartRequestImageRed,
.stopRequestImage = myStopRequestImageRed,
},
{
.requestImage = myRequestImageGreen,
.startRequestImage = myStartRequestImageGreen,
.stopRequestImage = myStopRequestImageGreen,
},
{
.requestImage = myRequestImageBlue,
.startRequestImage = myStartRequestImageBlue,
.stopRequestImage = myStopRequestImageBlue,
},
};
int SDL_AppInit(int argc, char *argv[]) { int SDL_AppInit(int argc, char *argv[]) {
int devcount = 0; int devcount = 0;
int i; int i;
unsigned w, h;
SDL_CameraDeviceID *devices;
SDL_CameraDeviceID devid;
struct mArguments args; struct mArguments args;
bool parsed = mArgumentsParse(&args, argc, argv, NULL, 0); bool parsed = mArgumentsParse(&args, argc, argv, NULL, 0);
@ -156,6 +150,16 @@ int SDL_AppInit(int argc, char *argv[]) {
return -1; return -1;
} }
gb_img_src[0].requestImage = myRequestImageRed;
gb_img_src[0].startRequestImage = myStartRequestImageRed;
gb_img_src[0].stopRequestImage = myStopRequestImageRed;
gb_img_src[1].requestImage = myRequestImageGreen;
gb_img_src[1].startRequestImage = myStartRequestImageGreen;
gb_img_src[1].stopRequestImage = myStopRequestImageGreen;
gb_img_src[2].requestImage = myRequestImageBlue;
gb_img_src[2].startRequestImage = myStartRequestImageBlue;
gb_img_src[2].stopRequestImage = myStopRequestImageBlue;
for (i = 0; i < NUM_CHANNELS; i++) { for (i = 0; i < NUM_CHANNELS; i++) {
struct mCore* core = mCoreFind(args.fname); struct mCore* core = mCoreFind(args.fname);
if (!core || !core->init(core)) { if (!core || !core->init(core)) {
@ -169,7 +173,7 @@ int SDL_AppInit(int argc, char *argv[]) {
} }
mCoreConfigInit(&core->config, NULL); mCoreConfigInit(&core->config, NULL);
//mCoreConfigLoad(&core->config); /*mCoreConfigLoad(&core->config);*/
mArgumentsApply(&args, NULL, 0, &core->config); mArgumentsApply(&args, NULL, 0, &core->config);
mCoreConfigSetDefaultValue(&core->config, "idleOptimization", "detect"); mCoreConfigSetDefaultValue(&core->config, "idleOptimization", "detect");
@ -180,8 +184,7 @@ int SDL_AppInit(int argc, char *argv[]) {
cores[i] = core; cores[i] = core;
} }
unsigned w, h; /* without loss of generality */
// without loss of generality
cores[0]->currentVideoSize(cores[0], &w, &h); cores[0]->currentVideoSize(cores[0], &w, &h);
if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_CAMERA) != 0) { if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_CAMERA) != 0) {
@ -203,7 +206,7 @@ int SDL_AppInit(int argc, char *argv[]) {
SDL_LogSetAllPriority(SDL_LOG_PRIORITY_VERBOSE); SDL_LogSetAllPriority(SDL_LOG_PRIORITY_VERBOSE);
SDL_CameraDeviceID *devices = SDL_GetCameraDevices(&devcount); devices = SDL_GetCameraDevices(&devcount);
if (!devices) { if (!devices) {
SDL_Log("SDL_GetCameraDevices failed: %s", SDL_GetError()); SDL_Log("SDL_GetCameraDevices failed: %s", SDL_GetError());
return -1; return -1;
@ -226,7 +229,7 @@ int SDL_AppInit(int argc, char *argv[]) {
SDL_free(name); SDL_free(name);
} }
const SDL_CameraDeviceID devid = front_camera ? front_camera : devices[0]; /* no front-facing? just take the first one. */ devid = front_camera ? front_camera : devices[0]; /* no front-facing? just take the first one. */
SDL_free(devices); SDL_free(devices);
if (!devid) { if (!devid) {
@ -234,36 +237,28 @@ int SDL_AppInit(int argc, char *argv[]) {
return -1; return -1;
} }
SDL_CameraSpec init_spec = { spec.format = SDL_PIXELFORMAT_XBGR1555;
.format = SDL_PIXELFORMAT_XBGR1555, spec.width = 320;
.width = 320, spec.height = 240;
.height = 240, spec.interval_numerator = 1;
.interval_numerator = 1, spec.interval_denominator = 30;
.interval_denominator = 30, camera = SDL_OpenCameraDevice(devid, &spec);
};
camera = SDL_OpenCameraDevice(devid, &init_spec);
if (!camera) { if (!camera) {
SDL_Log("Failed to open camera device: %s", SDL_GetError()); SDL_Log("Failed to open camera device: %s", SDL_GetError());
return -1; return -1;
} }
#if BYTES_PER_PIXEL == 4
uint32_t fmt = SDL_PIXELFORMAT_XBGR8888;
#elif BYTES_PER_PIXEL == 2
uint32_t fmt = SDL_PIXELFORMAT_XBGR1555;
#else
#error "unknown pixel format"
#endif
for (i = 0; i < NUM_CHANNELS; i++) { for (i = 0; i < NUM_CHANNELS; i++) {
int j; int j;
struct mCore* core = cores[i]; struct mCore* core = cores[i];
SDL_Texture* texture;
SDL_Surface* screen = SDL_CreateSurface(w, h, SCREEN_FMT);
SDL_Surface* screen = SDL_CreateSurface(w, h, fmt);
core->setVideoBuffer(core, screen->pixels, screen->pitch / BYTES_PER_PIXEL); core->setVideoBuffer(core, screen->pixels, screen->pitch / BYTES_PER_PIXEL);
screens[i] = screen; screens[i] = screen;
/* Create texture with appropriate format */ /* Create texture with appropriate format */
SDL_Texture* texture = SDL_CreateTextureFromSurface(renderer, screens[0]); texture = SDL_CreateTextureFromSurface(renderer, screens[0]);
if (!texture) { if (!texture) {
SDL_Log("Couldn't create texture: %s", SDL_GetError()); SDL_Log("Couldn't create texture: %s", SDL_GetError());
return -1; return -1;
@ -271,7 +266,7 @@ int SDL_AppInit(int argc, char *argv[]) {
SDL_SetTextureBlendMode(texture, SDL_BLENDMODE_ADD); SDL_SetTextureBlendMode(texture, SDL_BLENDMODE_ADD);
textures[i] = texture; textures[i] = texture;
core->setPeripheral(core, mPERIPH_IMAGE_SOURCE, (void*)&gb_img_src[i]); core->setPeripheral(core, mPERIPH_IMAGE_SOURCE, &gb_img_src[i]);
core->reset(core); core->reset(core);
@ -279,19 +274,19 @@ int SDL_AppInit(int argc, char *argv[]) {
for (j = 0; j < 600; j++) { for (j = 0; j < 600; j++) {
core->runFrame(core); core->runFrame(core);
} }
core->setKeys(core, 1); // title screen core->setKeys(core, 1); /* title screen */
core->runFrame(core); core->runFrame(core);
core->setKeys(core, 0); core->setKeys(core, 0);
for (j = 0; j < 25; j++) { for (j = 0; j < 25; j++) {
core->runFrame(core); core->runFrame(core);
} }
core->setKeys(core, 1); // select 'shoot' core->setKeys(core, 1); /* select 'shoot' */
core->runFrame(core); core->runFrame(core);
core->setKeys(core, 0); core->setKeys(core, 0);
for (j = 0; j < 75; j++) { for (j = 0; j < 75; j++) {
core->runFrame(core); core->runFrame(core);
} }
core->setKeys(core, 1); // select 'shoot' again core->setKeys(core, 1); /* select 'shoot' again */
core->runFrame(core); core->runFrame(core);
core->setKeys(core, 0); core->setKeys(core, 0);
for (j = 0; j < 100; j++) { for (j = 0; j < 100; j++) {
@ -388,11 +383,12 @@ int SDL_AppIterate(void) {
SDL_Surface *frame = camera ? SDL_AcquireCameraFrame(camera, &timestampNS) : NULL; SDL_Surface *frame = camera ? SDL_AcquireCameraFrame(camera, &timestampNS) : NULL;
if (frame) { if (frame) {
//SDL_Log("new frame %d x %d %s", frame->w, frame->h, SDL_GetPixelFormatName(frame->format->format));
texture_updated = SDL_FALSE;
struct SDL_Rect srcrect = frame->clip_rect; struct SDL_Rect srcrect = frame->clip_rect;
int w = srcrect.h * scaled->clip_rect.w / scaled->clip_rect.h; int w = srcrect.h * scaled->clip_rect.w / scaled->clip_rect.h;
/*SDL_Log("new frame %d x %d %s", frame->w, frame->h, SDL_GetPixelFormatName(frame->format->format));*/
texture_updated = SDL_FALSE;
if (w >= srcrect.w) { if (w >= srcrect.w) {
srcrect.x = (srcrect.w - w) / 2; srcrect.x = (srcrect.w - w) / 2;
srcrect.w = w; srcrect.w = w;
@ -401,8 +397,7 @@ int SDL_AppIterate(void) {
srcrect.y = (srcrect.h - h) / 2; srcrect.y = (srcrect.h - h) / 2;
srcrect.h = h; srcrect.h = h;
} }
int res = SDL_BlitSurfaceScaled(frame, &srcrect, scaled, &scaled->clip_rect, SDL_SCALEMODE_NEAREST); if (SDL_BlitSurfaceScaled(frame, &srcrect, scaled, &scaled->clip_rect, SDL_SCALEMODE_NEAREST) < 0) {
if (res != 0) {
SDL_Log("failed to scale: %s", SDL_GetError()); SDL_Log("failed to scale: %s", SDL_GetError());
} }