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windowscodecs: BitmapScaler_CopyPixels: Do not demand a larger buffer than necessary.
Only `bytesperrow` bytes are written to each row of the output rect. Therefore the last row need not be padded to `cbStride` bytes. Signed-off-by: Joachim Priesner <joachim.priesner@web.de> Signed-off-by: Esme Povirk <esme@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>
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2 changed files with 9 additions and 6 deletions
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@ -251,7 +251,7 @@ static HRESULT WINAPI BitmapScaler_CopyPixels(IWICBitmapScaler *iface,
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goto end;
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}
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if ((cbStride * dest_rect.Height) > cbBufferSize)
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if (cbStride * (dest_rect.Height - 1) + bytesperrow > cbBufferSize)
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{
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hr = E_INVALIDARG;
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goto end;
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@ -1151,7 +1151,7 @@ static void test_bitmap_scaler(void)
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double res_x, res_y;
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IWICBitmap *bitmap;
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UINT width, height;
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BYTE buf[16];
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BYTE buf[93]; /* capable of holding a 7*4px, 24bpp image with stride 24 -> buffer size = 3*24+21 */
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HRESULT hr;
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hr = IWICImagingFactory_CreateBitmap(factory, 4, 2, &GUID_WICPixelFormat24bppBGR, WICBitmapCacheOnLoad, &bitmap);
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@ -1243,7 +1243,7 @@ static void test_bitmap_scaler(void)
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WICBitmapInterpolationModeNearestNeighbor);
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ok(hr == E_INVALIDARG, "Failed to initialize bitmap scaler, hr %#lx.\n", hr);
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hr = IWICBitmapScaler_Initialize(scaler, (IWICBitmapSource *)bitmap, 8, 4,
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hr = IWICBitmapScaler_Initialize(scaler, (IWICBitmapSource *)bitmap, 7, 4,
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WICBitmapInterpolationModeNearestNeighbor);
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ok(hr == S_OK, "Failed to initialize bitmap scaler, hr %#lx.\n", hr);
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@ -1251,20 +1251,20 @@ static void test_bitmap_scaler(void)
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WICBitmapInterpolationModeNearestNeighbor);
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ok(hr == E_INVALIDARG, "Unexpected hr %#lx.\n", hr);
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hr = IWICBitmapScaler_Initialize(scaler, (IWICBitmapSource *)bitmap, 8, 0,
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hr = IWICBitmapScaler_Initialize(scaler, (IWICBitmapSource *)bitmap, 7, 0,
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WICBitmapInterpolationModeNearestNeighbor);
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ok(hr == E_INVALIDARG, "Unexpected hr %#lx.\n", hr);
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hr = IWICBitmapScaler_Initialize(scaler, NULL, 8, 4, WICBitmapInterpolationModeNearestNeighbor);
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ok(hr == E_INVALIDARG, "Unexpected hr %#lx.\n", hr);
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hr = IWICBitmapScaler_Initialize(scaler, (IWICBitmapSource *)bitmap, 8, 4,
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hr = IWICBitmapScaler_Initialize(scaler, (IWICBitmapSource *)bitmap, 7, 4,
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WICBitmapInterpolationModeNearestNeighbor);
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ok(hr == WINCODEC_ERR_WRONGSTATE, "Unexpected hr %#lx.\n", hr);
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hr = IWICBitmapScaler_GetSize(scaler, &width, &height);
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ok(hr == S_OK, "Failed to get scaler size, hr %#lx.\n", hr);
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ok(width == 8, "Unexpected width %u.\n", width);
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ok(width == 7, "Unexpected width %u.\n", width);
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ok(height == 4, "Unexpected height %u.\n", height);
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hr = IWICBitmapScaler_GetSize(scaler, NULL, &height);
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@ -1307,6 +1307,9 @@ static void test_bitmap_scaler(void)
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ok(hr == WINCODEC_ERR_PALETTEUNAVAILABLE, "Unexpected hr %#lx.\n", hr);
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IWICPalette_Release(palette);
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hr = IWICBitmapScaler_CopyPixels(scaler, NULL, /*cbStride=*/24, sizeof(buf), buf);
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ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
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IWICBitmapScaler_Release(scaler);
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IWICBitmap_Release(bitmap);
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