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ext/libpng/gstpngdec.c: Temporary hack to get correct colors order when we have a png image with alpha channel.

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Original commit message from CVS:
2005-10-25  Julien MOUTTE  <julien@moutte.net>

* ext/libpng/gstpngdec.c: (user_info_callback),
(gst_pngdec_caps_create_and_set), (gst_pngdec_task): Temporary
hack to get correct colors order when we have a png image with
alpha channel.
This commit is contained in:
Julien Moutte 2005-10-25 10:23:26 +00:00
parent ecc3125b27
commit cc0c33355e
2 changed files with 24 additions and 3 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2005-10-25 Julien MOUTTE <julien@moutte.net>
* ext/libpng/gstpngdec.c: (user_info_callback),
(gst_pngdec_caps_create_and_set), (gst_pngdec_task): Temporary
hack to get correct colors order when we have a png image with
alpha channel.
2005-10-24 Edward Hervey <edward@fluendo.com>
* ext/dv/gstdvdemux.c: (gst_dvdemux_add_pads):

20
ext/libpng/gstpngdec.c
View file

@ -175,7 +175,7 @@ user_info_callback (png_structp png_ptr, png_infop info)
{
GstPngDec *pngdec = NULL;
GstFlowReturn ret = GST_FLOW_OK;
gint bpc = 0;
gint bpc = 0, color_type;
png_uint_32 width, height;
size_t buffer_size;
GstBuffer *buffer = NULL;
@ -193,6 +193,13 @@ user_info_callback (png_structp png_ptr, png_infop info)
png_set_strip_16 (pngdec->png);
}
/* Get Color type */
color_type = png_get_color_type (pngdec->png, pngdec->info);
/* HACK: The doc states that it's RGBA but apparently it's not... */
if (color_type == PNG_COLOR_TYPE_RGB_ALPHA)
png_set_bgr (pngdec->png);
/* Update the info structure */
png_read_update_info (pngdec->png, pngdec->info);
@ -340,7 +347,7 @@ gst_pngdec_caps_create_and_set (GstPngDec * pngdec)
ret = GST_FLOW_ERROR;
}
GST_LOG ("our caps %s", gst_caps_to_string (res));
GST_DEBUG_OBJECT (pngdec, "our caps %" GST_PTR_FORMAT, res);
gst_caps_unref (res);
@ -354,7 +361,7 @@ gst_pngdec_task (GstPad * pad)
GstPngDec *pngdec;
GstBuffer *buffer = NULL;
size_t buffer_size = 0;
gint i = 0, bpc = 0;
gint i = 0, bpc = 0, color_type;
png_bytep *rows, inp;
png_uint_32 width, height, rowbytes;
GstFlowReturn ret = GST_FLOW_OK;
@ -382,6 +389,13 @@ gst_pngdec_task (GstPad * pad)
png_set_strip_16 (pngdec->png);
}
/* Get Color type */
color_type = png_get_color_type (pngdec->png, pngdec->info);
/* HACK: The doc states that it's RGBA but apparently it's not... */
if (color_type == PNG_COLOR_TYPE_RGB_ALPHA)
png_set_bgr (pngdec->png);
/* Update the info structure */
png_read_update_info (pngdec->png, pngdec->info);