From 4194879df1b6dd1be5109cdf818a007cc2c85496 Mon Sep 17 00:00:00 2001
From: "Ryan C. Gordon" <[EMAIL REDACTED]>
Date: Sun, 7 Dec 2025 15:26:31 -0500
Subject: [PATCH] surface: Surface rotation property should be float, not int.
Adjusted camera internals to work in floats, too.
Reference Issue #14616.
---
WhatsNew.txt | 2 +-
include/SDL3/SDL_surface.h | 4 ++--
src/camera/SDL_camera.c | 6 +++---
src/camera/SDL_syscamera.h | 4 ++--
src/camera/android/SDL_camera_android.c | 4 ++--
src/camera/coremedia/SDL_camera_coremedia.m | 10 +++++-----
src/camera/dummy/SDL_camera_dummy.c | 2 +-
src/camera/emscripten/SDL_camera_emscripten.c | 2 +-
.../mediafoundation/SDL_camera_mediafoundation.c | 4 ++--
src/camera/pipewire/SDL_camera_pipewire.c | 2 +-
src/camera/v4l2/SDL_camera_v4l2.c | 2 +-
src/camera/vita/SDL_camera_vita.c | 2 +-
test/testcamera.c | 2 +-
13 files changed, 23 insertions(+), 23 deletions(-)
diff --git a/WhatsNew.txt b/WhatsNew.txt
index c93148ffacab5..1d85f156f5e1e 100644
--- a/WhatsNew.txt
+++ b/WhatsNew.txt
@@ -37,7 +37,7 @@ General:
* Added SDL_FLIP_HORIZONTAL_AND_VERTICAL to flip a surface both horizontally and vertically
* Added SDL_LoadPNG(), SDL_LoadPNG_IO(), SDL_SavePNG(), and SDL_SavePNG_IO() to load and save PNG images
* Added SDL_LoadSurface() and SDL_LoadSurface_IO() to detect BMP and PNG formats and load them as surfaces
-* Added SDL_PROP_SURFACE_ROTATION_NUMBER to indicate the rotation needed to display camera images upright
+* Added SDL_PROP_SURFACE_ROTATION_FLOAT to indicate the rotation needed to display camera images upright
* Added SDL_RotateSurface() to create a rotated copy of a surface
* SDL_EVENT_WINDOW_EXPOSED now sets data1 to true if it is sent during live resizing
* Added SDL_EVENT_DISPLAY_USABLE_BOUNDS_CHANGED, which is sent when the usable desktop bounds change
diff --git a/include/SDL3/SDL_surface.h b/include/SDL3/SDL_surface.h
index 8be939c8014ca..e37cb59f25a9d 100644
--- a/include/SDL3/SDL_surface.h
+++ b/include/SDL3/SDL_surface.h
@@ -241,7 +241,7 @@ extern SDL_DECLSPEC void SDLCALL SDL_DestroySurface(SDL_Surface *surface);
* left edge of the image, if this surface is being used as a cursor.
* - `SDL_PROP_SURFACE_HOTSPOT_Y_NUMBER`: the hotspot pixel offset from the
* top edge of the image, if this surface is being used as a cursor.
- * - `SDL_PROP_SURFACE_ROTATION_NUMBER`: the number of degrees a surface's
+ * - `SDL_PROP_SURFACE_ROTATION_FLOAT`: the number of degrees a surface's
* data is meant to be rotated clockwise to make the image right-side up.
* Default 0. This is used by the camera API, if a mobile device is oriented
* differently than what its camera provides (i.e. - the camera always
@@ -263,7 +263,7 @@ extern SDL_DECLSPEC SDL_PropertiesID SDLCALL SDL_GetSurfaceProperties(SDL_Surfac
#define SDL_PROP_SURFACE_TONEMAP_OPERATOR_STRING "SDL.surface.tonemap"
#define SDL_PROP_SURFACE_HOTSPOT_X_NUMBER "SDL.surface.hotspot.x"
#define SDL_PROP_SURFACE_HOTSPOT_Y_NUMBER "SDL.surface.hotspot.y"
-#define SDL_PROP_SURFACE_ROTATION_NUMBER "SDL.surface.rotation"
+#define SDL_PROP_SURFACE_ROTATION_FLOAT "SDL.surface.rotation"
/**
* Set the colorspace used by a surface.
diff --git a/src/camera/SDL_camera.c b/src/camera/SDL_camera.c
index b3c3e5e82cc7b..b9a11b52dcf80 100644
--- a/src/camera/SDL_camera.c
+++ b/src/camera/SDL_camera.c
@@ -150,7 +150,7 @@ static size_t GetFrameBufLen(const SDL_CameraSpec *spec)
return wxh * SDL_BYTESPERPIXEL(fmt);
}
-static SDL_CameraFrameResult ZombieAcquireFrame(SDL_Camera *device, SDL_Surface *frame, Uint64 *timestampNS, int *rotation)
+static SDL_CameraFrameResult ZombieAcquireFrame(SDL_Camera *device, SDL_Surface *frame, Uint64 *timestampNS, float *rotation)
{
const SDL_CameraSpec *spec = &device->actual_spec;
@@ -832,7 +832,7 @@ bool SDL_CameraThreadIterate(SDL_Camera *device)
SDL_Surface *output_surface = NULL;
SurfaceList *slist = NULL;
Uint64 timestampNS = 0;
- int rotation = 0;
+ float rotation = 0.0f;
// AcquireFrame SHOULD NOT BLOCK, as we are holding a lock right now. Block in WaitDevice instead!
const SDL_CameraFrameResult rc = device->AcquireFrame(device, device->acquire_surface, ×tampNS, &rotation);
@@ -929,7 +929,7 @@ bool SDL_CameraThreadIterate(SDL_Camera *device)
acquired->pixels = NULL;
acquired->pitch = 0;
- SDL_SetNumberProperty(SDL_GetSurfaceProperties(output_surface), SDL_PROP_SURFACE_ROTATION_NUMBER, rotation);
+ SDL_SetFloatProperty(SDL_GetSurfaceProperties(output_surface), SDL_PROP_SURFACE_ROTATION_FLOAT, rotation);
// make the filled output surface available to the app.
SDL_LockMutex(device->lock);
diff --git a/src/camera/SDL_syscamera.h b/src/camera/SDL_syscamera.h
index 151f73d65a0e7..14a6e87c8d745 100644
--- a/src/camera/SDL_syscamera.h
+++ b/src/camera/SDL_syscamera.h
@@ -99,7 +99,7 @@ struct SDL_Camera
// These are, initially, set from camera_driver, but we might swap them out with Zombie versions on disconnect/failure.
bool (*WaitDevice)(SDL_Camera *device);
- SDL_CameraFrameResult (*AcquireFrame)(SDL_Camera *device, SDL_Surface *frame, Uint64 *timestampNS, int *rotation);
+ SDL_CameraFrameResult (*AcquireFrame)(SDL_Camera *device, SDL_Surface *frame, Uint64 *timestampNS, float *rotation);
void (*ReleaseFrame)(SDL_Camera *device, SDL_Surface *frame);
// All supported formats/dimensions for this device.
@@ -178,7 +178,7 @@ typedef struct SDL_CameraDriverImpl
bool (*OpenDevice)(SDL_Camera *device, const SDL_CameraSpec *spec);
void (*CloseDevice)(SDL_Camera *device);
bool (*WaitDevice)(SDL_Camera *device);
- SDL_CameraFrameResult (*AcquireFrame)(SDL_Camera *device, SDL_Surface *frame, Uint64 *timestampNS, int *rotation); // set frame->pixels, frame->pitch, *timestampNS, and *rotation!
+ SDL_CameraFrameResult (*AcquireFrame)(SDL_Camera *device, SDL_Surface *frame, Uint64 *timestampNS, float *rotation); // set frame->pixels, frame->pitch, *timestampNS, and *rotation!
void (*ReleaseFrame)(SDL_Camera *device, SDL_Surface *frame); // Reclaim frame->pixels and frame->pitch!
void (*FreeDeviceHandle)(SDL_Camera *device); // SDL is done with this device; free the handle from SDL_AddCamera()
void (*Deinitialize)(void);
diff --git a/src/camera/android/SDL_camera_android.c b/src/camera/android/SDL_camera_android.c
index e52c78f3a747b..ed1164cec62fd 100644
--- a/src/camera/android/SDL_camera_android.c
+++ b/src/camera/android/SDL_camera_android.c
@@ -296,7 +296,7 @@ static bool ANDROIDCAMERA_WaitDevice(SDL_Camera *device)
return true; // this isn't used atm, since we run our own thread via onImageAvailable callbacks.
}
-static SDL_CameraFrameResult ANDROIDCAMERA_AcquireFrame(SDL_Camera *device, SDL_Surface *frame, Uint64 *timestampNS, int *rotation)
+static SDL_CameraFrameResult ANDROIDCAMERA_AcquireFrame(SDL_Camera *device, SDL_Surface *frame, Uint64 *timestampNS, float *rotation)
{
SDL_CameraFrameResult result = SDL_CAMERA_FRAME_READY;
media_status_t res;
@@ -380,7 +380,7 @@ static SDL_CameraFrameResult ANDROIDCAMERA_AcquireFrame(SDL_Camera *device, SDL_
dev_rotation = -dev_rotation; // we want to subtract this value, instead of add, if back-facing.
}
- *rotation = dev_rotation + device->hidden->rotation; // current phone orientation, static camera orientation in relation to phone.
+ *rotation = (float) (dev_rotation + device->hidden->rotation); // current phone orientation, static camera orientation in relation to phone.
return result;
}
diff --git a/src/camera/coremedia/SDL_camera_coremedia.m b/src/camera/coremedia/SDL_camera_coremedia.m
index b50ceba953008..f02c4acc21fa4 100644
--- a/src/camera/coremedia/SDL_camera_coremedia.m
+++ b/src/camera/coremedia/SDL_camera_coremedia.m
@@ -157,7 +157,7 @@ static bool COREMEDIA_WaitDevice(SDL_Camera *device)
return true; // this isn't used atm, since we run our own thread out of Grand Central Dispatch.
}
-static SDL_CameraFrameResult COREMEDIA_AcquireFrame(SDL_Camera *device, SDL_Surface *frame, Uint64 *timestampNS, int *rotation)
+static SDL_CameraFrameResult COREMEDIA_AcquireFrame(SDL_Camera *device, SDL_Surface *frame, Uint64 *timestampNS, float *rotation)
{
SDL_CameraFrameResult result = SDL_CAMERA_FRAME_READY;
SDLPrivateCameraData *hidden = (__bridge SDLPrivateCameraData *) device->hidden;
@@ -243,21 +243,21 @@ static SDL_CameraFrameResult COREMEDIA_AcquireFrame(SDL_Camera *device, SDL_Surf
// there is probably math for this, but this is easy to slap into a table.
// rotation = rotations[uiorientation-1][devorientation-1];
if (device->position == SDL_CAMERA_POSITION_BACK_FACING) {
- static const int back_rotations[4][4] = {
+ static const Uint16 back_rotations[4][4] = {
{ 90, 90, 90, 90 }, // ui portrait
{ 270, 270, 270, 270 }, // ui portait upside down
{ 0, 0, 0, 0 }, // ui landscape left
{ 180, 180, 180, 180 } // ui landscape right
};
- *rotation = back_rotations[ui_orientation - 1][device_orientation - 1];
+ *rotation = (float) back_rotations[ui_orientation - 1][device_orientation - 1];
} else {
- static const int front_rotations[4][4] = {
+ static const Uint16 front_rotations[4][4] = {
{ 90, 90, 270, 270 }, // ui portrait
{ 270, 270, 90, 90 }, // ui portait upside down
{ 0, 0, 180, 180 }, // ui landscape left
{ 180, 180, 0, 0 } // ui landscape right
};
- *rotation = front_rotations[ui_orientation - 1][device_orientation - 1];
+ *rotation = (float) front_rotations[ui_orientation - 1][device_orientation - 1];
}
#endif
diff --git a/src/camera/dummy/SDL_camera_dummy.c b/src/camera/dummy/SDL_camera_dummy.c
index 981c2cecb8739..8de3194ae8931 100644
--- a/src/camera/dummy/SDL_camera_dummy.c
+++ b/src/camera/dummy/SDL_camera_dummy.c
@@ -38,7 +38,7 @@ static bool DUMMYCAMERA_WaitDevice(SDL_Camera *device)
return SDL_Unsupported();
}
-static SDL_CameraFrameResult DUMMYCAMERA_AcquireFrame(SDL_Camera *device, SDL_Surface *frame, Uint64 *timestampNS, int *rotation)
+static SDL_CameraFrameResult DUMMYCAMERA_AcquireFrame(SDL_Camera *device, SDL_Surface *frame, Uint64 *timestampNS, float *rotation)
{
SDL_Unsupported();
return SDL_CAMERA_FRAME_ERROR;
diff --git a/src/camera/emscripten/SDL_camera_emscripten.c b/src/camera/emscripten/SDL_camera_emscripten.c
index 8eb67b7f845f6..f5096bfb91a58 100644
--- a/src/camera/emscripten/SDL_camera_emscripten.c
+++ b/src/camera/emscripten/SDL_camera_emscripten.c
@@ -39,7 +39,7 @@ static bool EMSCRIPTENCAMERA_WaitDevice(SDL_Camera *device)
return false;
}
-static SDL_CameraFrameResult EMSCRIPTENCAMERA_AcquireFrame(SDL_Camera *device, SDL_Surface *frame, Uint64 *timestampNS, int *rotation)
+static SDL_CameraFrameResult EMSCRIPTENCAMERA_AcquireFrame(SDL_Camera *device, SDL_Surface *frame, Uint64 *timestampNS, float *rotation)
{
void *rgba = SDL_malloc(device->actual_spec.width * device->actual_spec.height * 4);
if (!rgba) {
diff --git a/src/camera/mediafoundation/SDL_camera_mediafoundation.c b/src/camera/mediafoundation/SDL_camera_mediafoundation.c
index 4abe2294d4026..c57ff63e47a6a 100644
--- a/src/camera/mediafoundation/SDL_camera_mediafoundation.c
+++ b/src/camera/mediafoundation/SDL_camera_mediafoundation.c
@@ -430,7 +430,7 @@ static void SDLCALL CleanupIMFMediaBuffer(void *userdata, void *value)
SDL_free(objs);
}
-static SDL_CameraFrameResult MEDIAFOUNDATION_AcquireFrame(SDL_Camera *device, SDL_Surface *frame, Uint64 *timestampNS, int *rotation)
+static SDL_CameraFrameResult MEDIAFOUNDATION_AcquireFrame(SDL_Camera *device, SDL_Surface *frame, Uint64 *timestampNS, float *rotation)
{
SDL_assert(device->hidden->current_sample != NULL);
@@ -562,7 +562,7 @@ static SDL_CameraFrameResult MEDIAFOUNDATION_CopyFrame(SDL_Surface *frame, const
return SDL_CAMERA_FRAME_READY;
}
-static SDL_CameraFrameResult MEDIAFOUNDATION_AcquireFrame(SDL_Camera *device, SDL_Surface *frame, Uint64 *timestampNS, int *rotation)
+static SDL_CameraFrameResult MEDIAFOUNDATION_AcquireFrame(SDL_Camera *device, SDL_Surface *frame, Uint64 *timestampNS, float *rotation)
{
SDL_assert(device->hidden->current_sample != NULL);
diff --git a/src/camera/pipewire/SDL_camera_pipewire.c b/src/camera/pipewire/SDL_camera_pipewire.c
index 610cd71fabfab..b2aae04a5b177 100644
--- a/src/camera/pipewire/SDL_camera_pipewire.c
+++ b/src/camera/pipewire/SDL_camera_pipewire.c
@@ -577,7 +577,7 @@ static bool PIPEWIRECAMERA_WaitDevice(SDL_Camera *device)
return true;
}
-static SDL_CameraFrameResult PIPEWIRECAMERA_AcquireFrame(SDL_Camera *device, SDL_Surface *frame, Uint64 *timestampNS, int *rotation)
+static SDL_CameraFrameResult PIPEWIRECAMERA_AcquireFrame(SDL_Camera *device, SDL_Surface *frame, Uint64 *timestampNS, float *rotation)
{
struct pw_buffer *b;
diff --git a/src/camera/v4l2/SDL_camera_v4l2.c b/src/camera/v4l2/SDL_camera_v4l2.c
index fbaf4e12bf50e..ead44c889396f 100644
--- a/src/camera/v4l2/SDL_camera_v4l2.c
+++ b/src/camera/v4l2/SDL_camera_v4l2.c
@@ -125,7 +125,7 @@ static bool V4L2_WaitDevice(SDL_Camera *device)
return false;
}
-static SDL_CameraFrameResult V4L2_AcquireFrame(SDL_Camera *device, SDL_Surface *frame, Uint64 *timestampNS, int *rotation)
+static SDL_CameraFrameResult V4L2_AcquireFrame(SDL_Camera *device, SDL_Surface *frame, Uint64 *timestampNS, float *rotation)
{
const int fd = device->hidden->fd;
const io_method io = device->hidden->io;
diff --git a/src/camera/vita/SDL_camera_vita.c b/src/camera/vita/SDL_camera_vita.c
index ff492b383afc6..3badeaed5dd15 100644
--- a/src/camera/vita/SDL_camera_vita.c
+++ b/src/camera/vita/SDL_camera_vita.c
@@ -190,7 +190,7 @@ static bool VITACAMERA_WaitDevice(SDL_Camera *device)
return true;
}
-static SDL_CameraFrameResult VITACAMERA_AcquireFrame(SDL_Camera *device, SDL_Surface *frame, Uint64 *timestampNS, int *rotation)
+static SDL_CameraFrameResult VITACAMERA_AcquireFrame(SDL_Camera *device, SDL_Surface *frame, Uint64 *timestampNS, float *rotation)
{
SceCameraRead read = {0};
read.size = sizeof(SceCameraRead);
diff --git a/test/testcamera.c b/test/testcamera.c
index 985852575160f..941a071c4666a 100644
--- a/test/testcamera.c
+++ b/test/testcamera.c
@@ -364,7 +364,7 @@ SDL_AppResult SDL_AppIterate(void *appstate)
// device might be rotated to a different one (like an iPhone providing portrait images even if you hold
// the phone in landscape mode). The rotation is how far to rotate the image clockwise to put it right-side
// up, for how the user would expect it to be for how they are holding the device.
- const int rotation = (int) SDL_GetNumberProperty(SDL_GetSurfaceProperties(frame_current), SDL_PROP_SURFACE_ROTATION_NUMBER, 0);
+ const float rotation = SDL_GetFloatProperty(SDL_GetSurfaceProperties(frame_current), SDL_PROP_SURFACE_ROTATION_FLOAT, 0.0f);
SDL_GetRenderOutputSize(renderer, &win_w, &win_h);
d.x = ((win_w - texture->w) / 2.0f);
d.y = ((win_h - texture->h) / 2.0f);