video: add methods to parse X11 visuals

Add method to convert X11 visual description to GstVideoFormat
This commit is contained in:
Wim Taymans 2011-06-16 12:43:54 +02:00
parent 42fa1010cb
commit 3b9477e173
2 changed files with 155 additions and 1 deletions

View file

@ -630,6 +630,149 @@ gst_video_format_new_caps (GstVideoFormat format, int width,
}
static GstVideoFormat
gst_video_format_from_rgb32_masks (int red_mask, int green_mask, int blue_mask)
{
if (red_mask == 0xff000000 && green_mask == 0x00ff0000 &&
blue_mask == 0x0000ff00) {
return GST_VIDEO_FORMAT_RGBx;
}
if (red_mask == 0x0000ff00 && green_mask == 0x00ff0000 &&
blue_mask == 0xff000000) {
return GST_VIDEO_FORMAT_BGRx;
}
if (red_mask == 0x00ff0000 && green_mask == 0x0000ff00 &&
blue_mask == 0x000000ff) {
return GST_VIDEO_FORMAT_xRGB;
}
if (red_mask == 0x000000ff && green_mask == 0x0000ff00 &&
blue_mask == 0x00ff0000) {
return GST_VIDEO_FORMAT_xBGR;
}
return GST_VIDEO_FORMAT_UNKNOWN;
}
static GstVideoFormat
gst_video_format_from_rgba32_masks (int red_mask, int green_mask,
int blue_mask, int alpha_mask)
{
if (red_mask == 0xff000000 && green_mask == 0x00ff0000 &&
blue_mask == 0x0000ff00 && alpha_mask == 0x000000ff) {
return GST_VIDEO_FORMAT_RGBA;
}
if (red_mask == 0x0000ff00 && green_mask == 0x00ff0000 &&
blue_mask == 0xff000000 && alpha_mask == 0x000000ff) {
return GST_VIDEO_FORMAT_BGRA;
}
if (red_mask == 0x00ff0000 && green_mask == 0x0000ff00 &&
blue_mask == 0x000000ff && alpha_mask == 0xff000000) {
return GST_VIDEO_FORMAT_ARGB;
}
if (red_mask == 0x000000ff && green_mask == 0x0000ff00 &&
blue_mask == 0x00ff0000 && alpha_mask == 0xff000000) {
return GST_VIDEO_FORMAT_ABGR;
}
return GST_VIDEO_FORMAT_UNKNOWN;
}
static GstVideoFormat
gst_video_format_from_rgb24_masks (int red_mask, int green_mask, int blue_mask)
{
if (red_mask == 0xff0000 && green_mask == 0x00ff00 && blue_mask == 0x0000ff) {
return GST_VIDEO_FORMAT_RGB;
}
if (red_mask == 0x0000ff && green_mask == 0x00ff00 && blue_mask == 0xff0000) {
return GST_VIDEO_FORMAT_BGR;
}
return GST_VIDEO_FORMAT_UNKNOWN;
}
#define GST_VIDEO_COMP1_MASK_16_INT 0xf800
#define GST_VIDEO_COMP2_MASK_16_INT 0x07e0
#define GST_VIDEO_COMP3_MASK_16_INT 0x001f
#define GST_VIDEO_COMP1_MASK_15_INT 0x7c00
#define GST_VIDEO_COMP2_MASK_15_INT 0x03e0
#define GST_VIDEO_COMP3_MASK_15_INT 0x001f
static GstVideoFormat
gst_video_format_from_rgb16_masks (int red_mask, int green_mask, int blue_mask)
{
if (red_mask == GST_VIDEO_COMP1_MASK_16_INT
&& green_mask == GST_VIDEO_COMP2_MASK_16_INT
&& blue_mask == GST_VIDEO_COMP3_MASK_16_INT) {
return GST_VIDEO_FORMAT_RGB16;
}
if (red_mask == GST_VIDEO_COMP3_MASK_16_INT
&& green_mask == GST_VIDEO_COMP2_MASK_16_INT
&& blue_mask == GST_VIDEO_COMP1_MASK_16_INT) {
return GST_VIDEO_FORMAT_BGR16;
}
if (red_mask == GST_VIDEO_COMP1_MASK_15_INT
&& green_mask == GST_VIDEO_COMP2_MASK_15_INT
&& blue_mask == GST_VIDEO_COMP3_MASK_15_INT) {
return GST_VIDEO_FORMAT_RGB15;
}
if (red_mask == GST_VIDEO_COMP3_MASK_15_INT
&& green_mask == GST_VIDEO_COMP2_MASK_15_INT
&& blue_mask == GST_VIDEO_COMP1_MASK_15_INT) {
return GST_VIDEO_FORMAT_BGR15;
}
return GST_VIDEO_FORMAT_UNKNOWN;
}
GstVideoFormat
gst_video_format_from_masks (gint depth, gint bpp, gint endianness,
gint red_mask, gint green_mask, gint blue_mask, gint alpha_mask)
{
GstVideoFormat format;
/* our caps system handles 24/32bpp RGB as big-endian. */
if ((bpp == 24 || bpp == 32) && endianness == G_LITTLE_ENDIAN) {
red_mask = GUINT32_TO_BE (red_mask);
green_mask = GUINT32_TO_BE (green_mask);
blue_mask = GUINT32_TO_BE (blue_mask);
endianness = G_BIG_ENDIAN;
if (bpp == 24) {
red_mask >>= 8;
green_mask >>= 8;
blue_mask >>= 8;
}
}
if (depth == 30 && bpp == 32) {
format = GST_VIDEO_FORMAT_r210;
} else if (depth == 24 && bpp == 32) {
format = gst_video_format_from_rgb32_masks (red_mask, green_mask,
blue_mask);
} else if (depth == 32 && bpp == 32 && alpha_mask) {
format = gst_video_format_from_rgba32_masks (red_mask, green_mask,
blue_mask, alpha_mask);
} else if (depth == 24 && bpp == 24) {
format = gst_video_format_from_rgb24_masks (red_mask, green_mask,
blue_mask);
} else if ((depth == 15 || depth == 16) && bpp == 16 &&
endianness == G_BYTE_ORDER) {
format = gst_video_format_from_rgb16_masks (red_mask, green_mask,
blue_mask);
} else if (depth == 8 && bpp == 8) {
format = GST_VIDEO_FORMAT_RGB8_PALETTED;
} else if (depth == 64 && bpp == 64) {
format = gst_video_format_from_rgba32_masks (red_mask, green_mask,
blue_mask, alpha_mask);
if (format == GST_VIDEO_FORMAT_ARGB) {
format = GST_VIDEO_FORMAT_ARGB64;
} else {
format = GST_VIDEO_FORMAT_UNKNOWN;
}
} else {
format = GST_VIDEO_FORMAT_UNKNOWN;
}
return format;
}
/**
* gst_video_format_from_fourcc:
* @fourcc: a FOURCC value representing raw YUV video

View file

@ -33,7 +33,7 @@ G_BEGIN_DECLS
* @GST_VIDEO_FORMAT_I420: planar 4:2:0 YUV
* @GST_VIDEO_FORMAT_YV12: planar 4:2:0 YVU (like I420 but UV planes swapped)
* @GST_VIDEO_FORMAT_YUY2: packed 4:2:2 YUV (Y0-U0-Y1-V0 Y2-U2-Y3-V2 Y4 ...)
* @GST_VIDEO_FORMAT_UYVY: packed 4:2:2 YUV (U0-Y0-V0-Y1 U2-Y2-V2-Y3 U4 ...)
* @GST_VIDEO_FORMAT_UYVY: packed 4:2:2 YUV (U0-Y0-V0-Y1 U2-Y2-V2-Y3 U4 ...)
* @GST_VIDEO_FORMAT_AYUV: packed 4:4:4 YUV with alpha channel (A0-Y0-U0-V0 ...)
* @GST_VIDEO_FORMAT_RGBx: sparse rgb packed into 32 bit, space last
* @GST_VIDEO_FORMAT_BGRx: sparse reverse rgb packed into 32 bit, space last
@ -124,6 +124,13 @@ typedef enum {
#define GST_VIDEO_SIZE_RANGE "(int) [ 1, max ]"
#define GST_VIDEO_FPS_RANGE "(fraction) [ 0, max ]"
#define GST_VIDEO_FORMATS_ALL "{ \"I420\"," "\"YV12\"," "\"YUY2\"," "\"UYVY\"," "\"AYUV\"," "\"RGBx\"," \
"\"BGRx\"," "\"xRGB\"," "\"xBGR\"," "\"RGBA\"," "\"BGRA\"," "\"ARGB\"," "\"ABGR\"," "\"RGB\"," \
"\"BGR\"," "\"Y41B\"," "\"Y42B\"," "\"YVYU\"," "\"Y444\"," "\"v210\"," "\"v216\"," "\"NV12\"," \
"\"NV21\"," "\"GRAY8\"," "\"GRAY16_BE\"," "\"GRAY16_LE\"," "\"v308\"," "\"Y800\"," "\"Y16\"," \
"\"RGB16\"," "\"BGR16\"," "\"RGB15\"," "\"BGR15\"," "\"UYVP\"," "\"A420\"," "\"RGB8_PALETTED\"," \
"\"YUV9\"," "\"YVU9\"," "\"IYU1\"," "\"ARGB64\"," "\"AYUV64\"," "\"r210\" } "
/**
* GST_VIDEO_CAPS_MAKE:
* @format: string format that describes the pixel layout, as string
@ -238,6 +245,10 @@ GstCaps * gst_video_format_new_template_caps (GstVideoFormat format);
/* format properties */
GstVideoFormat gst_video_format_from_masks (gint depth, gint bpp, gint endianness,
gint red_mask, gint green_mask,
gint blue_mask, gint alpha_mask) G_GNUC_CONST;
GstVideoFormat gst_video_format_from_fourcc (guint32 fourcc) G_GNUC_CONST;
GstVideoFormat gst_video_format_from_string (const gchar *format) G_GNUC_CONST;