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Add gst_vaapi_image_format_from_caps() helper.

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This commit is contained in:
gb 2010-03-12 22:28:01 +00:00
parent d1f3c3e6b0
commit d5253e6e2c
2 changed files with 63 additions and 5 deletions
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65
gst-libs/gst/vaapi/gstvaapiimageformat.c
View file

@ -73,6 +73,16 @@ static const GstVaapiImageFormatMap gst_vaapi_image_formats[] = {
#undef DEF_YUV
#undef DEF
static inline gboolean
match_va_format_rgb(const VAImageFormat *fmt1, const VAImageFormat *fmt2)
{
return (fmt1->byte_order == fmt2->byte_order &&
fmt1->red_mask == fmt2->red_mask &&
fmt1->green_mask == fmt2->green_mask &&
fmt1->blue_mask == fmt2->blue_mask &&
fmt1->alpha_mask == fmt2->alpha_mask);
}
static const GstVaapiImageFormatMap *get_map(const VAImageFormat *va_format)
{
const GstVaapiImageFormatMap *m;
@ -80,11 +90,7 @@ static const GstVaapiImageFormatMap *get_map(const VAImageFormat *va_format)
for (m = gst_vaapi_image_formats; m->format; m++)
if (m->va_format.fourcc == va_format->fourcc &&
(m->type == GST_VAAPI_IMAGE_FORMAT_TYPE_RGB ?
(m->va_format.byte_order == va_format->byte_order &&
m->va_format.red_mask == va_format->red_mask &&
m->va_format.green_mask == va_format->green_mask &&
m->va_format.blue_mask == va_format->blue_mask &&
m->va_format.alpha_mask == va_format->alpha_mask) :
match_va_format_rgb(&m->va_format, va_format) :
TRUE))
return m;
return NULL;
@ -136,6 +142,55 @@ gst_vaapi_image_format(const VAImageFormat *va_format)
return m->format;
}
GstVaapiImageFormat
gst_vaapi_image_format_from_caps(GstCaps *caps)
{
const GstVaapiImageFormatMap *m;
GstStructure *structure;
VAImageFormat *va_format, va_formats[2];
gint endian, rmask, gmask, bmask, amask = 0;
guint32 fourcc;
if (!caps)
return 0;
structure = gst_caps_get_structure(caps, 0);
if (!structure)
return 0;
/* Check for YUV format */
if (gst_structure_get_fourcc(structure, "format", &fourcc))
return gst_vaapi_image_format_from_fourcc(fourcc);
/* Check for RGB format */
gst_structure_get_int(structure, "endianness", &endian);
gst_structure_get_int(structure, "red_mask", &rmask);
gst_structure_get_int(structure, "green_mask", &gmask);
gst_structure_get_int(structure, "blue_mask", &bmask);
gst_structure_get_int(structure, "alpha_mask", &amask);
va_format = &va_formats[0];
va_format->byte_order = endian == G_BIG_ENDIAN ? VA_MSB_FIRST : VA_LSB_FIRST;
va_format->red_mask = rmask;
va_format->green_mask = gmask;
va_format->blue_mask = bmask;
va_format->alpha_mask = amask;
va_format = &va_formats[1];
va_format->byte_order = endian == G_BIG_ENDIAN ? VA_LSB_FIRST : VA_MSB_FIRST;
va_format->red_mask = GUINT32_SWAP_LE_BE(rmask);
va_format->green_mask = GUINT32_SWAP_LE_BE(gmask);
va_format->blue_mask = GUINT32_SWAP_LE_BE(bmask);
va_format->alpha_mask = GUINT32_SWAP_LE_BE(amask);
for (m = gst_vaapi_image_formats; m->format; m++)
if (match_va_format_rgb(&m->va_format, &va_formats[0]) ||
match_va_format_rgb(&m->va_format, &va_formats[1]))
return m->format;
return 0;
}
GstVaapiImageFormat
gst_vaapi_image_format_from_fourcc(guint32 fourcc)
{

3
gst-libs/gst/vaapi/gstvaapiimageformat.h
View file

@ -54,6 +54,9 @@ gst_vaapi_image_format_is_yuv(GstVaapiImageFormat format);
GstVaapiImageFormat
gst_vaapi_image_format(const VAImageFormat *va_format);
GstVaapiImageFormat
gst_vaapi_image_format_from_caps(GstCaps *caps);
GstVaapiImageFormat
gst_vaapi_image_format_from_fourcc(guint32 fourcc);