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gdiplus: Add GIF loopcount to the image properties.

This commit is contained in:
Dmitry Timoshkov 2012-09-25 12:55:04 +09:00 committed by Alexandre Julliard
parent 54edca19e1
commit faa24d96d4
1 changed files with 60 additions and 1 deletions
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61
dlls/gdiplus/image.c
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@ -3222,6 +3222,47 @@ static PropertyItem *get_gif_comment(IWICMetadataReader *reader)
return comment;
}
static PropertyItem *get_gif_loopcount(IWICMetadataReader *reader)
{
static const WCHAR applicationW[] = { 'A','p','p','l','i','c','a','t','i','o','n',0 };
static const WCHAR dataW[] = { 'D','a','t','a',0 };
PropertyItem *appext = NULL, *appdata = NULL, *loop = NULL;
appext = get_property(reader, &GUID_MetadataFormatAPE, applicationW);
if (appext)
{
if (appext->type == PropertyTagTypeByte && appext->length == 11 &&
(!memcmp(appext->value, "NETSCAPE2.0", 11) || !memcmp(appext->value, "ANIMEXTS1.0", 11)))
{
appdata = get_property(reader, &GUID_MetadataFormatAPE, dataW);
if (appdata)
{
if (appdata->type == PropertyTagTypeByte && appdata->length == 4)
{
BYTE *data = appdata->value;
if (data[0] == 3 && data[1] == 1)
{
loop = GdipAlloc(sizeof(*loop) + sizeof(SHORT));
if (loop)
{
loop->type = PropertyTagTypeShort;
loop->id = PropertyTagLoopCount;
loop->length = sizeof(SHORT);
loop->value = loop + 1;
*(SHORT *)loop->value = data[2] | (data[3] << 8);
}
}
}
}
}
}
GdipFree(appext);
GdipFree(appdata);
return loop;
}
static PropertyItem *get_gif_background(IWICMetadataReader *reader)
{
static const WCHAR backgroundW[] = { 'B','a','c','k','g','r','o','u','n','d','C','o','l','o','r','I','n','d','e','x',0 };
@ -3296,7 +3337,7 @@ static void gif_metadata_reader(GpBitmap *bitmap, IWICBitmapDecoder *decoder, UI
IWICMetadataReader *reader;
UINT frame_count, block_count, i;
PropertyItem *delay = NULL, *comment = NULL, *background = NULL;
PropertyItem *transparent_idx = NULL;
PropertyItem *transparent_idx = NULL, *loop = NULL;
IWICBitmapDecoder_GetFrameCount(decoder, &frame_count);
if (frame_count > 1)
@ -3340,6 +3381,9 @@ static void gif_metadata_reader(GpBitmap *bitmap, IWICBitmapDecoder *decoder, UI
if (!comment)
comment = get_gif_comment(reader);
if (frame_count > 1 && !loop)
loop = get_gif_loopcount(reader);
if (!background)
background = get_gif_background(reader);
@ -3350,12 +3394,27 @@ static void gif_metadata_reader(GpBitmap *bitmap, IWICBitmapDecoder *decoder, UI
IWICMetadataBlockReader_Release(block_reader);
}
if (frame_count > 1 && !loop)
{
loop = GdipAlloc(sizeof(*loop) + sizeof(SHORT));
if (loop)
{
loop->type = PropertyTagTypeShort;
loop->id = PropertyTagLoopCount;
loop->length = sizeof(SHORT);
loop->value = loop + 1;
*(SHORT *)loop->value = 1;
}
}
if (delay) add_property(bitmap, delay);
if (comment) add_property(bitmap, comment);
if (loop) add_property(bitmap, loop);
if (background) add_property(bitmap, background);
GdipFree(delay);
GdipFree(comment);
GdipFree(loop);
GdipFree(background);
/* Win7 gdiplus always returns transparent color index from frame 0 */