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GStreamer Base Plugins 0.10 Library Reference Manual | ![]() |
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#include <gst/video/video.h> #define GST_VIDEO_BLUE_MASK_15 #define GST_VIDEO_BLUE_MASK_15_INT #define GST_VIDEO_BLUE_MASK_16 #define GST_VIDEO_BLUE_MASK_16_INT #define GST_VIDEO_BYTE1_MASK_24 #define GST_VIDEO_BYTE1_MASK_24_INT #define GST_VIDEO_BYTE1_MASK_32 #define GST_VIDEO_BYTE1_MASK_32_INT #define GST_VIDEO_BYTE2_MASK_24 #define GST_VIDEO_BYTE2_MASK_24_INT #define GST_VIDEO_BYTE2_MASK_32 #define GST_VIDEO_BYTE2_MASK_32_INT #define GST_VIDEO_BYTE3_MASK_24 #define GST_VIDEO_BYTE3_MASK_24_INT #define GST_VIDEO_BYTE3_MASK_32 #define GST_VIDEO_BYTE3_MASK_32_INT #define GST_VIDEO_BYTE4_MASK_32 #define GST_VIDEO_BYTE4_MASK_32_INT #define GST_VIDEO_CAPS_ABGR #define GST_VIDEO_CAPS_ARGB #define GST_VIDEO_CAPS_BGR #define GST_VIDEO_CAPS_BGRA #define GST_VIDEO_CAPS_BGRx #define GST_VIDEO_CAPS_BGRx_HOST_ENDIAN #define GST_VIDEO_CAPS_RGB #define GST_VIDEO_CAPS_RGBA #define GST_VIDEO_CAPS_RGB_15 #define GST_VIDEO_CAPS_RGB_16 #define GST_VIDEO_CAPS_RGBx #define GST_VIDEO_CAPS_YUV (fourcc) #define GST_VIDEO_CAPS_xBGR #define GST_VIDEO_CAPS_xRGB #define GST_VIDEO_CAPS_xRGB_HOST_ENDIAN #define GST_VIDEO_FPS_RANGE #define GST_VIDEO_GREEN_MASK_15 #define GST_VIDEO_GREEN_MASK_15_INT #define GST_VIDEO_GREEN_MASK_16 #define GST_VIDEO_GREEN_MASK_16_INT #define GST_VIDEO_RED_MASK_15 #define GST_VIDEO_RED_MASK_15_INT #define GST_VIDEO_RED_MASK_16 #define GST_VIDEO_RED_MASK_16_INT #define GST_VIDEO_SIZE_RANGE gboolean gst_video_calculate_display_ratio (guint *dar_n, guint *dar_d, guint video_width, guint video_height, guint video_par_n, guint video_par_d, guint display_par_n, guint display_par_d); const GValue* gst_video_frame_rate (GstPad *pad); gboolean gst_video_get_size (GstPad *pad, gint *width, gint *height);
This library contains some helper functions and includes the videosink and videofilter base classes.
gboolean gst_video_calculate_display_ratio (guint *dar_n, guint *dar_d, guint video_width, guint video_height, guint video_par_n, guint video_par_d, guint display_par_n, guint display_par_d);
Given the Pixel Aspect Ratio and size of an input video frame, and the pixel aspect ratio of the intended display device, calculates the actual display ratio the video will be rendered with.
dar_n : |
Numerator of the calculated display_ratio |
dar_d : |
Denominator of the calculated display_ratio |
video_width : |
Width of the video frame in pixels |
video_height : |
Height of the video frame in pixels |
video_par_n : |
Numerator of the pixel aspect ratio of the input video. |
video_par_d : |
Denominator of the pixel aspect ratio of the input video. |
display_par_n : |
Numerator of the pixel aspect ratio of the display device |
display_par_d : |
Denominator of the pixel aspect ratio of the display device |
Returns : | A boolean indicating success and a calculated Display Ratio in the dar_n and dar_d parameters. The return value is FALSE in the case of integer overflow or other error. |
Since 0.10.7