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[gst-cvs] gst-plugins-base: video: Add support for 8-bit and 16-bit grayscale formats
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From: <sl...@ke...> - 2010-04-07 15:07:06
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Module: gst-plugins-base Branch: master Commit: 1e3a66f539fa82ba581ca3b202d90c8987a1850c URL: http://cgit.freedesktop.org/gstreamer/gst-plugins-base/commit/?id=1e3a66f539fa82ba581ca3b202d90c8987a1850c Author: Sebastian Dröge <seb...@co...> Date: Wed Apr 7 17:06:36 2010 +0200 video: Add support for 8-bit and 16-bit grayscale formats --- gst-libs/gst/video/video.c | 113 ++++++++++++++++++++++++++++++++++++++++++++ gst-libs/gst/video/video.h | 9 +++- 2 files changed, 121 insertions(+), 1 deletions(-) diff --git a/gst-libs/gst/video/video.c b/gst-libs/gst/video/video.c index 3fe76cf..aa3d3c8 100644 --- a/gst-libs/gst/video/video.c +++ b/gst-libs/gst/video/video.c @@ -404,6 +404,24 @@ gst_video_format_parse_caps (GstCaps * caps, GstVideoFormat * format, } else { ok = FALSE; } + } else if (gst_structure_has_name (structure, "video/x-raw-gray")) { + int depth; + int bpp; + int endianness; + + ok &= gst_structure_get_int (structure, "depth", &depth); + ok &= gst_structure_get_int (structure, "bpp", &bpp); + ok &= gst_structure_get_int (structure, "endianness", &endianness); + + if (depth == 8 && bpp == 8) { + *format = GST_VIDEO_FORMAT_GRAY8; + } else if (depth == 16 && bpp == 16 && endianness == G_BIG_ENDIAN) { + *format = GST_VIDEO_FORMAT_GRAY16_BE; + } else if (depth == 16 && bpp == 16 && endianness == G_LITTLE_ENDIAN) { + *format = GST_VIDEO_FORMAT_GRAY16_LE; + } else { + ok = FALSE; + } } else { ok = FALSE; } @@ -621,6 +639,53 @@ gst_video_format_new_caps (GstVideoFormat format, int width, int height, } return caps; } + + if (gst_video_format_is_gray (format)) { + GstCaps *caps; + int bpp; + int depth; + int endianness; + + switch (format) { + case GST_VIDEO_FORMAT_GRAY8: + bpp = depth = 8; + endianness = G_BIG_ENDIAN; + break; + case GST_VIDEO_FORMAT_GRAY16_BE: + bpp = depth = 16; + endianness = G_BIG_ENDIAN; + break; + case GST_VIDEO_FORMAT_GRAY16_LE: + bpp = depth = 16; + endianness = G_LITTLE_ENDIAN; + break; + default: + return NULL; + break; + } + + if (bpp > 8) { + caps = gst_caps_new_simple ("video/x-raw-gray", + "bpp", G_TYPE_INT, bpp, + "depth", G_TYPE_INT, depth, + "width", G_TYPE_INT, width, + "height", G_TYPE_INT, height, + "framerate", GST_TYPE_FRACTION, framerate_n, framerate_d, + "pixel-aspect-ratio", GST_TYPE_FRACTION, par_n, par_d, NULL); + } else { + caps = gst_caps_new_simple ("video/x-raw-gray", + "bpp", G_TYPE_INT, bpp, + "depth", G_TYPE_INT, depth, + "endianness", G_TYPE_INT, G_BIG_ENDIAN, + "width", G_TYPE_INT, width, + "height", G_TYPE_INT, height, + "framerate", GST_TYPE_FRACTION, framerate_n, framerate_d, + "pixel-aspect-ratio", GST_TYPE_FRACTION, par_n, par_d, NULL); + } + + return caps; + } + return NULL; } @@ -882,6 +947,29 @@ gst_video_format_is_yuv (GstVideoFormat format) } /** + * gst_video_format_is_gray: + * @format: a #GstVideoFormat + * + * Determine whether the video format is a grayscale format. + * + * Since: 0.10.29 + * + * Returns: TRUE if @format represents grayscale video + */ +gboolean +gst_video_format_is_gray (GstVideoFormat format) +{ + switch (format) { + case GST_VIDEO_FORMAT_GRAY8: + case GST_VIDEO_FORMAT_GRAY16_BE: + case GST_VIDEO_FORMAT_GRAY16_LE: + return TRUE; + default: + return FALSE; + } +} + +/** * gst_video_format_has_alpha: * @format: a #GstVideoFormat * @@ -999,6 +1087,11 @@ gst_video_format_get_row_stride (GstVideoFormat format, int component, case GST_VIDEO_FORMAT_NV12: case GST_VIDEO_FORMAT_NV21: return GST_ROUND_UP_4 (width); + case GST_VIDEO_FORMAT_GRAY8: + return GST_ROUND_UP_4 (width); + case GST_VIDEO_FORMAT_GRAY16_BE: + case GST_VIDEO_FORMAT_GRAY16_LE: + return GST_ROUND_UP_4 (width * 2); default: return 0; } @@ -1068,6 +1161,11 @@ gst_video_format_get_pixel_stride (GstVideoFormat format, int component) } else { return 2; } + case GST_VIDEO_FORMAT_GRAY8: + return 1; + case GST_VIDEO_FORMAT_GRAY16_BE: + case GST_VIDEO_FORMAT_GRAY16_LE: + return 2; default: return 0; } @@ -1129,6 +1227,9 @@ gst_video_format_get_component_width (GstVideoFormat format, int component, case GST_VIDEO_FORMAT_Y444: case GST_VIDEO_FORMAT_NV12: case GST_VIDEO_FORMAT_NV21: + case GST_VIDEO_FORMAT_GRAY8: + case GST_VIDEO_FORMAT_GRAY16_BE: + case GST_VIDEO_FORMAT_GRAY16_LE: return width; default: return 0; @@ -1186,6 +1287,9 @@ gst_video_format_get_component_height (GstVideoFormat format, int component, case GST_VIDEO_FORMAT_Y444: case GST_VIDEO_FORMAT_v210: case GST_VIDEO_FORMAT_v216: + case GST_VIDEO_FORMAT_GRAY8: + case GST_VIDEO_FORMAT_GRAY16_BE: + case GST_VIDEO_FORMAT_GRAY16_LE: return height; default: return 0; @@ -1379,6 +1483,10 @@ gst_video_format_get_component_offset (GstVideoFormat format, int component, return GST_ROUND_UP_4 (width) * GST_ROUND_UP_2 (height) + 1; if (component == 2) return GST_ROUND_UP_4 (width) * GST_ROUND_UP_2 (height); + case GST_VIDEO_FORMAT_GRAY8: + case GST_VIDEO_FORMAT_GRAY16_BE: + case GST_VIDEO_FORMAT_GRAY16_LE: + return 0; default: return 0; } @@ -1444,6 +1552,11 @@ gst_video_format_get_size (GstVideoFormat format, int width, int height) case GST_VIDEO_FORMAT_NV12: case GST_VIDEO_FORMAT_NV21: return GST_ROUND_UP_4 (width) * GST_ROUND_UP_2 (height) * 3 / 2; + case GST_VIDEO_FORMAT_GRAY8: + return GST_ROUND_UP_4 (width) * height; + case GST_VIDEO_FORMAT_GRAY16_BE: + case GST_VIDEO_FORMAT_GRAY16_LE: + return GST_ROUND_UP_4 (width * 2) * height; default: return 0; } diff --git a/gst-libs/gst/video/video.h b/gst-libs/gst/video/video.h index 65659a7..070e618 100644 --- a/gst-libs/gst/video/video.h +++ b/gst-libs/gst/video/video.h @@ -53,6 +53,9 @@ G_BEGIN_DECLS * @GST_VIDEO_FORMAT_v216: packed 4:2:2 16-bit YUV, Y0-U0-Y1-V1 order (Since: 0.10.24) * @GST_VIDEO_FORMAT_NV12: planar 4:2:0 YUV with interleaved UV plane (Since: 0.10.26) * @GST_VIDEO_FORMAT_NV21: planar 4:2:0 YUV with interleaved VU plane (Since: 0.10.26) + * @GST_VIDEO_FORMAT_GRAY8: 8-bit grayscale (Since: 0.10.29) + * @GST_VIDEO_FORMAT_GRAY16_BE: 16-bit grayscale, most significant byte first (Since: 0.10.29) + * @GST_VIDEO_FORMAT_GRAY16_LE: 16-bit grayscale, least significant byte first (Since: 0.10.29) * * Enum value describing the most common video formats. */ @@ -80,7 +83,10 @@ typedef enum { GST_VIDEO_FORMAT_v210, GST_VIDEO_FORMAT_v216, GST_VIDEO_FORMAT_NV12, - GST_VIDEO_FORMAT_NV21 + GST_VIDEO_FORMAT_NV21, + GST_VIDEO_FORMAT_GRAY8, + GST_VIDEO_FORMAT_GRAY16_BE, + GST_VIDEO_FORMAT_GRAY16_LE } GstVideoFormat; #define GST_VIDEO_BYTE1_MASK_32 "0xFF000000" @@ -303,6 +309,7 @@ GstVideoFormat gst_video_format_from_fourcc (guint32 fourcc); guint32 gst_video_format_to_fourcc (GstVideoFormat format); gboolean gst_video_format_is_rgb (GstVideoFormat format); gboolean gst_video_format_is_yuv (GstVideoFormat format); +gboolean gst_video_format_is_gray (GstVideoFormat format); gboolean gst_video_format_has_alpha (GstVideoFormat format); int gst_video_format_get_row_stride (GstVideoFormat format, int component, int width); |