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windowscodecs: Implement SetPixelFormat for the PNG encoder.

This commit is contained in:
Vincent Povirk 2009-09-23 16:28:30 -05:00 committed by Alexandre Julliard
parent 6afcb2eb33
commit a2214f04d4
1 changed files with 45 additions and 2 deletions
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47
dlls/windowscodecs/pngformat.c
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@ -665,6 +665,29 @@ HRESULT PngDecoder_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void** ppv)
return ret;
}
struct png_pixelformat {
const WICPixelFormatGUID *guid;
UINT bpp;
int bit_depth;
int color_type;
BOOL remove_filler;
BOOL swap_rgb;
};
static const struct png_pixelformat formats[] = {
{&GUID_WICPixelFormat24bppBGR, 24, 8, PNG_COLOR_TYPE_RGB, 0, 1},
{&GUID_WICPixelFormatBlackWhite, 1, 1, PNG_COLOR_TYPE_GRAY, 0, 0},
{&GUID_WICPixelFormat2bppGray, 2, 2, PNG_COLOR_TYPE_GRAY, 0, 0},
{&GUID_WICPixelFormat4bppGray, 4, 4, PNG_COLOR_TYPE_GRAY, 0, 0},
{&GUID_WICPixelFormat8bppGray, 8, 8, PNG_COLOR_TYPE_GRAY, 0, 0},
{&GUID_WICPixelFormat16bppGray, 16, 16, PNG_COLOR_TYPE_GRAY, 0, 0},
{&GUID_WICPixelFormat32bppBGR, 32, 8, PNG_COLOR_TYPE_RGB, 1, 1},
{&GUID_WICPixelFormat32bppBGRA, 32, 8, PNG_COLOR_TYPE_RGB_ALPHA, 0, 1},
{&GUID_WICPixelFormat48bppRGB, 48, 16, PNG_COLOR_TYPE_RGB, 0, 0},
{&GUID_WICPixelFormat64bppRGBA, 64, 16, PNG_COLOR_TYPE_RGB_ALPHA, 0, 0},
{NULL},
};
typedef struct PngEncoder {
const IWICBitmapEncoderVtbl *lpVtbl;
const IWICBitmapFrameEncodeVtbl *lpFrameVtbl;
@ -674,6 +697,8 @@ typedef struct PngEncoder {
png_infop info_ptr;
UINT frame_count;
BOOL frame_initialized;
const struct png_pixelformat *format;
BOOL info_written;
} PngEncoder;
static inline PngEncoder *encoder_from_frame(IWICBitmapFrameEncode *iface)
@ -746,8 +771,24 @@ static HRESULT WINAPI PngFrameEncode_SetResolution(IWICBitmapFrameEncode *iface,
static HRESULT WINAPI PngFrameEncode_SetPixelFormat(IWICBitmapFrameEncode *iface,
WICPixelFormatGUID *pPixelFormat)
{
TRACE("(%p,%s): stub\n", iface, debugstr_guid(pPixelFormat));
return E_NOTIMPL;
PngEncoder *This = encoder_from_frame(iface);
int i;
TRACE("(%p,%s)\n", iface, debugstr_guid(pPixelFormat));
if (!This->frame_initialized || This->info_written) return WINCODEC_ERR_WRONGSTATE;
for (i=0; formats[i].guid; i++)
{
if (memcmp(formats[i].guid, pPixelFormat, sizeof(GUID)) == 0)
break;
}
if (!formats[i].guid) i = 0;
This->format = &formats[i];
memcpy(pPixelFormat, This->format->guid, sizeof(GUID));
return S_OK;
}
static HRESULT WINAPI PngFrameEncode_SetColorContexts(IWICBitmapFrameEncode *iface,
@ -1046,6 +1087,8 @@ HRESULT PngEncoder_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void** ppv)
This->stream = NULL;
This->frame_count = 0;
This->frame_initialized = FALSE;
This->format = NULL;
This->info_written = FALSE;
ret = IUnknown_QueryInterface((IUnknown*)This, iid, ppv);
IUnknown_Release((IUnknown*)This);