mirrors/SDL
1
0
Fork 0
mirror of https://github.com/libsdl-org/SDL.git synced 2025-09-28 05:58:29 +00:00
Code Issues Packages Projects Releases Wiki Activity

Added colorspace to SDL_CameraSpec

Browse Source
This commit is contained in:
Sam Lantinga
2024-06-12 11:18:26 -07:00
parent 98499d6818
commit aeea819494
10 changed files with 407 additions and 167 deletions
Download Patch File Download Diff File Expand all files Collapse all files

37
src/camera/v4l2/SDL_camera_v4l2.c
View File

@@ -391,22 +391,23 @@ static int AllocBufferUserPtr(SDL_CameraDevice *device, size_t buffer_size)
return 0;
}
static Uint32 format_v4l2_to_sdl(Uint32 fmt)
static void format_v4l2_to_sdl(Uint32 fmt, SDL_PixelFormatEnum *format, SDL_Colorspace *colorspace)
{
switch (fmt) {
#define CASE(x, y) case x: return y
CASE(V4L2_PIX_FMT_YUYV, SDL_PIXELFORMAT_YUY2);
CASE(V4L2_PIX_FMT_MJPEG, SDL_PIXELFORMAT_UNKNOWN);
#undef CASE
default:
#if DEBUG_CAMERA
SDL_Log("CAMERA: Unknown format V4L2_PIX_FORMAT '%d'", fmt);
#endif
return SDL_PIXELFORMAT_UNKNOWN;
#define CASE(x, y, z) case x: *format = y; *colorspace = z; return
CASE(V4L2_PIX_FMT_YUYV, SDL_PIXELFORMAT_YUY2, SDL_COLORSPACE_BT709_LIMITED);
#undef CASE
default:
#if DEBUG_CAMERA
SDL_Log("CAMERA: Unknown format V4L2_PIX_FORMAT '%d'", fmt);
#endif
break;
}
*format = SDL_PIXELFORMAT_UNKNOWN;
*colorspace = SDL_COLORSPACE_UNKNOWN;
}
static Uint32 format_sdl_to_v4l2(Uint32 fmt)
static Uint32 format_sdl_to_v4l2(SDL_PixelFormatEnum fmt)
{
switch (fmt) {
#define CASE(y, x) case x: return y
@@ -644,7 +645,7 @@ static SDL_bool FindV4L2CameraDeviceByBusInfoCallback(SDL_CameraDevice *device,
return (SDL_strcmp(handle->bus_info, (const char *) userdata) == 0);
}
static int AddCameraFormat(const int fd, CameraFormatAddData *data, Uint32 sdlfmt, Uint32 v4l2fmt, int w, int h)
static int AddCameraFormat(const int fd, CameraFormatAddData *data, SDL_PixelFormatEnum sdlfmt, SDL_Colorspace colorspace, Uint32 v4l2fmt, int w, int h)
{
struct v4l2_frmivalenum frmivalenum;
SDL_zero(frmivalenum);
@@ -660,7 +661,7 @@ static int AddCameraFormat(const int fd, CameraFormatAddData *data, Uint32 sdlfm
const float fps = (float) denominator / (float) numerator;
SDL_Log("CAMERA: * Has discrete frame interval (%d / %d), fps=%f", numerator, denominator, fps);
#endif
if (SDL_AddCameraFormat(data, sdlfmt, w, h, numerator, denominator) == -1) {
if (SDL_AddCameraFormat(data, sdlfmt, colorspace, w, h, numerator, denominator) == -1) {
return -1; // Probably out of memory; we'll go with what we have, if anything.
}
frmivalenum.index++; // set up for the next one.
@@ -672,7 +673,7 @@ static int AddCameraFormat(const int fd, CameraFormatAddData *data, Uint32 sdlfm
const float fps = (float) d / (float) n;
SDL_Log("CAMERA: * Has %s frame interval (%d / %d), fps=%f", (frmivalenum.type == V4L2_FRMIVAL_TYPE_STEPWISE) ? "stepwise" : "continuous", n, d, fps);
#endif
if (SDL_AddCameraFormat(data, sdlfmt, w, h, n, d) == -1) {
if (SDL_AddCameraFormat(data, sdlfmt, colorspace, w, h, n, d) == -1) {
return -1; // Probably out of memory; we'll go with what we have, if anything.
}
d += (int) frmivalenum.stepwise.step.denominator;
@@ -727,7 +728,9 @@ static void MaybeAddDevice(const char *path)
SDL_zero(fmtdesc);
fmtdesc.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
while (ioctl(fd, VIDIOC_ENUM_FMT, &fmtdesc) == 0) {
const Uint32 sdlfmt = format_v4l2_to_sdl(fmtdesc.pixelformat);
SDL_PixelFormatEnum sdlfmt = SDL_PIXELFORMAT_UNKNOWN;
SDL_Colorspace colorspace = SDL_COLORSPACE_UNKNOWN;
format_v4l2_to_sdl(fmtdesc.pixelformat, &sdlfmt, &colorspace);
#if DEBUG_CAMERA
SDL_Log("CAMERA: - Has format '%s'%s%s", SDL_GetPixelFormatName(sdlfmt),
@@ -752,7 +755,7 @@ static void MaybeAddDevice(const char *path)
#if DEBUG_CAMERA
SDL_Log("CAMERA: * Has discrete size %dx%d", w, h);
#endif
if (AddCameraFormat(fd, &add_data, sdlfmt, fmtdesc.pixelformat, w, h) == -1) {
if (AddCameraFormat(fd, &add_data, sdlfmt, colorspace, fmtdesc.pixelformat, w, h) == -1) {
break; // Probably out of memory; we'll go with what we have, if anything.
}
frmsizeenum.index++; // set up for the next one.
@@ -768,7 +771,7 @@ static void MaybeAddDevice(const char *path)
#if DEBUG_CAMERA
SDL_Log("CAMERA: * Has %s size %dx%d", (frmsizeenum.type == V4L2_FRMSIZE_TYPE_STEPWISE) ? "stepwise" : "continuous", w, h);
#endif
if (AddCameraFormat(fd, &add_data, sdlfmt, fmtdesc.pixelformat, w, h) == -1) {
if (AddCameraFormat(fd, &add_data, sdlfmt, colorspace, fmtdesc.pixelformat, w, h) == -1) {
break; // Probably out of memory; we'll go with what we have, if anything.
}
}