Method copy_planar_data

rustcv-backend-msmf/src/stream.rs:334–364

Copies planar format data (NV12, YV12).

(
        &mut self,
        scanline0: *mut u8,
        pitch: i32,
        src_pitch: usize,
        row_bytes: usize,
    )

    /// Copies planar format data (NV12, YV12).
    unsafe fn copy_planar_data(
        &mut self,
        scanline0: *mut u8,
        pitch: i32,
        src_pitch: usize,
        row_bytes: usize,
    ) -> Result<()> {
        let y_height = self.height as usize;
        let uv_height = y_height.div_ceil(2);
        let total_height = y_height + uv_height;

        let src = self.get_src_ptr(scanline0, pitch, src_pitch, total_height);

        for row in 0..y_height {
            self.copy_row(src, row, src_pitch, row_bytes, 0);
        }

        let y_plane_size = row_bytes * y_height;
        let uv_src = src.add(y_height * src_pitch);

        for row in 0..uv_height {
            let src_row = uv_src.add(row * src_pitch);
            let dest_row = self
                .linear_buffer
                .as_mut_ptr()
                .add(y_plane_size + row * row_bytes);
            std::ptr::copy_nonoverlapping(src_row, dest_row, row_bytes);
        }

        Ok(())
    }

    /// Copies packed format data
    unsafe fn copy_packed_data(