move experimental code to old/

[nihav-player.git] / old / sdl-patches / 0004-video-add-YUV-overlay-support.patch

From a7e89f88df1bff23df6314d592d8e375dfae4048 Mon Sep 17 00:00:00 2001
From: Kostya Shishkov <kostya.shishkov@gmail.com>
Date: Wed, 27 Nov 2019 08:22:47 +0100
Subject: [PATCH 4/4] video: add YUV overlay support

---
 src/sdl/video.rs |  118 +++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 116 insertions(+), 2 deletions(-)

diff --git a/src/sdl/video.rs b/src/sdl/video.rs
index 710a1d6..9acfcb6 100644
--- a/src/sdl/video.rs
+++ b/src/sdl/video.rs
@@ -51,6 +51,26 @@ pub mod ll {
         pub refcount: c_int
     }
 
+    pub const SDL_YV12_OVERLAY: uint32_t = 0x32315659;
+    pub const SDL_IYUV_OVERLAY: uint32_t = 0x56555949;
+    pub const SDL_YUY2_OVERLAY: uint32_t = 0x32595559;
+    pub const SDL_UYVY_OVERLAY: uint32_t = 0x59565955;
+    pub const SDL_YVYU_OVERLAY: uint32_t = 0x55595659;
+
+    #[repr(C)]
+    #[derive(Copy, Clone)]
+    pub struct SDL_Overlay {
+        pub format: uint32_t,
+        pub w: c_int,
+        pub h: c_int,
+        pub planes: c_int,
+        pub pitches: *const uint16_t,
+        pub pixels: *const *mut uint8_t,
+        pub hwfuncs: *mut c_void,
+        pub hwdata: *mut c_void,
+        pub flags: uint32_t,
+    }
+
     #[repr(C)]
     #[derive(Copy, Clone)]
     pub struct SDL_Color {
@@ -109,7 +129,7 @@ pub mod ll {
                                     Gmask: uint32_t,
                                     Bmask: uint32_t,
                                     Amask: uint32_t) -> *mut SDL_Surface;
-        pub fn SDL_CreateRGBSurfaceFrom(pixels: *mut c_void,
+        pub fn SDL_CreateRGBSurfaceFrom(pixels: *const c_void,
                                         width: c_int,
                                         height: c_int,
                                         depth: c_int,
@@ -181,6 +201,14 @@ pub mod ll {
         pub fn SDL_LoadBMP_RW(src: *mut SDL_RWops, freesrc: c_int) -> *mut SDL_Surface;
         pub fn SDL_SaveBMP_RW(surface: *mut SDL_Surface, dst: *mut SDL_RWops, freedst: c_int) -> c_int;
         pub fn SDL_GL_SwapBuffers();
+
+        pub fn SDL_CreateYUVOverlay(width: c_int, height: c_int, format: uint32_t, display: *mut SDL_Surface)
+                        -> *mut SDL_Overlay;
+        pub fn SDL_LockYUVOverlay(overlay: *mut SDL_Overlay) -> c_int;
+        pub fn SDL_UnlockYUVOverlay(overlay: *mut SDL_Overlay);
+        pub fn SDL_DisplayYUVOverlay(overlay: *mut SDL_Overlay,
+                             dstrect: *mut SDL_Rect) -> c_int;
+        pub fn SDL_FreeYUVOverlay(overlay: *mut SDL_Overlay);
     }
 }
 
@@ -351,6 +379,7 @@ pub enum SurfaceFlag {
     SWSurface = 0x00000000,
     HWSurface = 0x00000001,
     AsyncBlit = 0x00000004,
+    HWAccel   = 0x00000100,
     SrcColorKey = 0x00001000,
     SrcAlpha = 0x00010000,
     RLEAccel = 0x00004000
@@ -466,6 +495,15 @@ pub fn get_video_surface() -> Result<Surface, String> {
     else { Ok(wrap_surface(raw, false)) }
 }
 
+#[derive(PartialEq, Eq, Copy, Clone)]
+pub enum OverlayFormat {
+    YV12,
+    IYUV,
+    YUY2,
+    UYVY,
+    YVYU,
+}
+
 // TODO: get_video_modes, get_video_driver_name
 
 impl Surface {
@@ -485,6 +523,38 @@ impl Surface {
         }
     }
 
+    pub fn new_from(pixels: &[u8], pitch: i32, width: isize, height: isize, bpp: isize,
+               rmask: u32, gmask: u32, bmask: u32, amask: u32) -> Result<Surface, String> {
+        unsafe {
+            let raw = ll::SDL_CreateRGBSurfaceFrom(pixels.as_ptr() as *const libc::c_void, width as c_int, height as c_int, bpp as c_int, pitch as c_int,
+                                               rmask, gmask, bmask, amask);
+
+            if raw.is_null() {
+                Err(get_error())
+            } else {
+                Ok(Surface { raw: raw, owned: true })
+            }
+        }
+    }
+
+    pub fn create_overlay(&self, width: isize, height: isize, format: OverlayFormat) -> Result<Overlay, String> {
+        unsafe {
+            let yuv_fmt = match format {
+                    OverlayFormat::YV12 => ll::SDL_YV12_OVERLAY,
+                    OverlayFormat::IYUV => ll::SDL_IYUV_OVERLAY,
+                    OverlayFormat::YUY2 => ll::SDL_YUY2_OVERLAY,
+                    OverlayFormat::UYVY => ll::SDL_UYVY_OVERLAY,
+                    OverlayFormat::YVYU => ll::SDL_YVYU_OVERLAY,
+                };
+            let raw = ll::SDL_CreateYUVOverlay(width as c_int, height as c_int, yuv_fmt, self.raw);
+            if raw.is_null() {
+                Err(get_error())
+            } else {
+                Ok(Overlay { raw: raw })
+            }
+        }
+    }
+
     pub fn from_bmp(path: &Path) -> Result<Surface, String> {
         let cpath = CString::new(path.to_str().unwrap()).unwrap();
         let mode = CString::new("rb".as_bytes()).unwrap();
@@ -742,4 +812,48 @@ pub fn swap_buffers() {
 }
 
 
-// TODO: YUV
+#[derive(PartialEq)]
+pub struct Overlay {
+    pub raw: *mut ll::SDL_Overlay,
+}
+
+impl Drop for Overlay {
+    fn drop(&mut self) {
+        unsafe {
+            ll::SDL_FreeYUVOverlay(self.raw);
+        }
+    }
+}
+
+impl Overlay {
+    pub fn display(&self, dest_rect: Option<Rect>) -> bool {
+        unsafe {
+            ll::SDL_DisplayYUVOverlay(self.raw, match dest_rect {
+                Some(ref rect) => mem::transmute(rect),
+                None => ptr::null_mut()
+            }) == 0
+        }
+    }
+
+    pub fn lock(&self) -> bool {
+        unsafe { ll::SDL_LockYUVOverlay(self.raw) == 0 }
+    }
+
+    pub fn unlock(&self) {
+        unsafe { ll::SDL_UnlockYUVOverlay(self.raw) }
+    }
+
+    pub unsafe fn get_pixel_ptr(&self, comp: usize) -> &mut [u8] {
+        let pitch = self.get_pitch(comp);
+        let len = if comp == 0 { pitch as usize * ((*self.raw).h as usize) } else
+                    { pitch as usize * (((*self.raw).h / 2) as usize) };
+        let ptr = *((*self.raw).pixels.add(comp));
+        let pixels: &mut [u8] = mem::transmute((ptr, len));
+
+        pixels
+    }
+
+    pub fn get_pitch(&self, comp: usize) -> usize {
+        unsafe { *((*self.raw).pitches.add(comp)) as usize }
+    }
+}
-- 
1.7.9.5