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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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2332 lines
67 KiB
C
2332 lines
67 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* Library <2002> Ronald Bultje <rbultje@ronald.bitfreak.net>
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* Copyright (C) 2007 David A. Schleef <ds@schleef.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include "video.h"
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/**
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* SECTION:gstvideo
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* @short_description: Support library for video operations
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*
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* <refsect2>
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* <para>
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* This library contains some helper functions and includes the
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* videosink and videofilter base classes.
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* </para>
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* </refsect2>
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*/
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static GstVideoFormat gst_video_format_from_rgb32_masks (int red_mask,
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int green_mask, int blue_mask);
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static GstVideoFormat gst_video_format_from_rgba32_masks (int red_mask,
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int green_mask, int blue_mask, int alpha_mask);
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static GstVideoFormat gst_video_format_from_rgb24_masks (int red_mask,
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int green_mask, int blue_mask);
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static GstVideoFormat gst_video_format_from_rgb16_masks (int red_mask,
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int green_mask, int blue_mask);
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/**
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* gst_video_frame_rate:
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* @pad: pointer to a #GstPad
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*
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* A convenience function to retrieve a GValue holding the framerate
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* from the caps on a pad.
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*
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* The pad needs to have negotiated caps containing a framerate property.
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*
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* Returns: NULL if the pad has no configured caps or the configured caps
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* do not contain a framerate.
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*
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*/
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const GValue *
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gst_video_frame_rate (GstPad * pad)
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{
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const GValue *fps;
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gchar *fps_string;
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const GstCaps *caps = NULL;
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GstStructure *structure;
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/* get pad caps */
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caps = GST_PAD_CAPS (pad);
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if (caps == NULL) {
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g_warning ("gstvideo: failed to get caps of pad %s:%s",
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GST_DEBUG_PAD_NAME (pad));
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return NULL;
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}
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structure = gst_caps_get_structure (caps, 0);
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if ((fps = gst_structure_get_value (structure, "framerate")) == NULL) {
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g_warning ("gstvideo: failed to get framerate property of pad %s:%s",
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GST_DEBUG_PAD_NAME (pad));
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return NULL;
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}
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if (!GST_VALUE_HOLDS_FRACTION (fps)) {
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g_warning
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("gstvideo: framerate property of pad %s:%s is not of type Fraction",
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GST_DEBUG_PAD_NAME (pad));
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return NULL;
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}
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fps_string = gst_value_serialize (fps);
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GST_DEBUG ("Framerate request on pad %s:%s: %s",
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GST_DEBUG_PAD_NAME (pad), fps_string);
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g_free (fps_string);
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return fps;
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}
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/**
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* gst_video_get_size:
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* @pad: pointer to a #GstPad
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* @width: pointer to integer to hold pixel width of the video frames (output)
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* @height: pointer to integer to hold pixel height of the video frames (output)
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*
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* Inspect the caps of the provided pad and retrieve the width and height of
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* the video frames it is configured for.
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*
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* The pad needs to have negotiated caps containing width and height properties.
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*
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* Returns: TRUE if the width and height could be retrieved.
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*
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*/
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gboolean
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gst_video_get_size (GstPad * pad, gint * width, gint * height)
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{
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const GstCaps *caps = NULL;
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GstStructure *structure;
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gboolean ret;
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g_return_val_if_fail (pad != NULL, FALSE);
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g_return_val_if_fail (width != NULL, FALSE);
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g_return_val_if_fail (height != NULL, FALSE);
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caps = GST_PAD_CAPS (pad);
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if (caps == NULL) {
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g_warning ("gstvideo: failed to get caps of pad %s:%s",
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GST_DEBUG_PAD_NAME (pad));
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return FALSE;
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}
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structure = gst_caps_get_structure (caps, 0);
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ret = gst_structure_get_int (structure, "width", width);
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ret &= gst_structure_get_int (structure, "height", height);
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if (!ret) {
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g_warning ("gstvideo: failed to get size properties on pad %s:%s",
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GST_DEBUG_PAD_NAME (pad));
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return FALSE;
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}
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GST_DEBUG ("size request on pad %s:%s: %dx%d",
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GST_DEBUG_PAD_NAME (pad), width ? *width : -1, height ? *height : -1);
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return TRUE;
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}
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/**
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* gst_video_calculate_display_ratio:
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* @dar_n: Numerator of the calculated display_ratio
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* @dar_d: Denominator of the calculated display_ratio
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* @video_width: Width of the video frame in pixels
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* @video_height: Height of the video frame in pixels
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* @video_par_n: Numerator of the pixel aspect ratio of the input video.
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* @video_par_d: Denominator of the pixel aspect ratio of the input video.
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* @display_par_n: Numerator of the pixel aspect ratio of the display device
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* @display_par_d: Denominator of the pixel aspect ratio of the display device
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*
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* Given the Pixel Aspect Ratio and size of an input video frame, and the
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* pixel aspect ratio of the intended display device, calculates the actual
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* display ratio the video will be rendered with.
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*
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* Returns: A boolean indicating success and a calculated Display Ratio in the
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* dar_n and dar_d parameters.
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* The return value is FALSE in the case of integer overflow or other error.
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*
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* Since: 0.10.7
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*/
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gboolean
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gst_video_calculate_display_ratio (guint * dar_n, guint * dar_d,
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guint video_width, guint video_height,
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guint video_par_n, guint video_par_d,
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guint display_par_n, guint display_par_d)
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{
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gint num, den;
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gint tmp_n, tmp_d;
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g_return_val_if_fail (dar_n != NULL, FALSE);
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g_return_val_if_fail (dar_d != NULL, FALSE);
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/* Calculate (video_width * video_par_n * display_par_d) /
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* (video_height * video_par_d * display_par_n) */
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if (!gst_util_fraction_multiply (video_width, video_height, video_par_n,
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video_par_d, &tmp_n, &tmp_d))
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goto error_overflow;
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if (!gst_util_fraction_multiply (tmp_n, tmp_d, display_par_d, display_par_n,
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&num, &den))
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goto error_overflow;
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g_return_val_if_fail (num > 0, FALSE);
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g_return_val_if_fail (den > 0, FALSE);
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*dar_n = num;
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*dar_d = den;
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return TRUE;
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error_overflow:
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return FALSE;
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}
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/**
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* gst_video_format_parse_caps_interlaced:
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* @caps: the fixed #GstCaps to parse
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* @interlaced: whether @caps represents interlaced video or not, may be NULL (output)
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*
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* Extracts whether the caps represents interlaced content or not and places it
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* in @interlaced.
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*
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* Since: 0.10.23
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*
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* Returns: TRUE if @caps was parsed correctly.
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*/
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gboolean
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gst_video_format_parse_caps_interlaced (GstCaps * caps, gboolean * interlaced)
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{
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GstStructure *structure;
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if (!gst_caps_is_fixed (caps))
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return FALSE;
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structure = gst_caps_get_structure (caps, 0);
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if (interlaced) {
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if (!gst_structure_get_boolean (structure, "interlaced", interlaced))
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*interlaced = FALSE;
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}
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return TRUE;
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}
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/**
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* gst_video_parse_caps_color_matrix:
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* @caps: the fixed #GstCaps to parse
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*
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* Extracts the color matrix used by the caps. Possible values are
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* "sdtv" for the standard definition color matrix (as specified in
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* Rec. ITU-R BT.470-6) or "hdtv" for the high definition color
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* matrix (as specified in Rec. ITU-R BT.709)
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*
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* Since: 0.10.29
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*
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* Returns: a color matrix string, or NULL if no color matrix could be
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* determined.
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*/
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const char *
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gst_video_parse_caps_color_matrix (GstCaps * caps)
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{
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GstStructure *structure;
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const char *s;
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if (!gst_caps_is_fixed (caps))
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return NULL;
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structure = gst_caps_get_structure (caps, 0);
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s = gst_structure_get_string (structure, "color-matrix");
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if (s)
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return s;
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if (gst_structure_has_name (structure, "video/x-raw-yuv")) {
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return "sdtv";
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}
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return NULL;
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}
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/**
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* gst_video_parse_caps_chroma_site:
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* @caps: the fixed #GstCaps to parse
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*
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* Extracts the chroma site used by the caps. Possible values are
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* "mpeg2" for MPEG-2 style chroma siting (co-sited horizontally,
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* halfway-sited vertically), "jpeg" for JPEG and Theora style
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* chroma siting (halfway-sited both horizontally and vertically).
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* Other chroma site values are possible, but uncommon.
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*
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* When no chroma site is specified in the caps, it should be assumed
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* to be "mpeg2".
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*
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* Since: 0.10.29
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*
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* Returns: a chroma site string, or NULL if no chroma site could be
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* determined.
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*/
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const char *
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gst_video_parse_caps_chroma_site (GstCaps * caps)
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{
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GstStructure *structure;
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const char *s;
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if (!gst_caps_is_fixed (caps))
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return NULL;
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structure = gst_caps_get_structure (caps, 0);
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s = gst_structure_get_string (structure, "chroma-site");
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if (s)
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return s;
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if (gst_structure_has_name (structure, "video/x-raw-yuv")) {
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return "mpeg2";
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}
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return NULL;
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}
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/**
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* gst_video_format_parse_caps:
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* @caps: the #GstCaps to parse
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* @format: the #GstVideoFormat of the video represented by @caps (output)
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* @width: the width of the video represented by @caps, may be NULL (output)
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* @height: the height of the video represented by @caps, may be NULL (output)
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*
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* Determines the #GstVideoFormat of @caps and places it in the location
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* pointed to by @format. Extracts the size of the video and places it
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* in the location pointed to by @width and @height. If @caps does not
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* represent one of the raw video formats listed in #GstVideoFormat, the
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* function will fail and return FALSE.
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*
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* Since: 0.10.16
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*
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* Returns: TRUE if @caps was parsed correctly.
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*/
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gboolean
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gst_video_format_parse_caps (const GstCaps * caps, GstVideoFormat * format,
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int *width, int *height)
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{
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GstStructure *structure;
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gboolean ok = TRUE;
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if (!gst_caps_is_fixed (caps))
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return FALSE;
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structure = gst_caps_get_structure (caps, 0);
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if (format) {
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if (gst_structure_has_name (structure, "video/x-raw-yuv")) {
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guint32 fourcc;
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ok &= gst_structure_get_fourcc (structure, "format", &fourcc);
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*format = gst_video_format_from_fourcc (fourcc);
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if (*format == GST_VIDEO_FORMAT_UNKNOWN) {
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ok = FALSE;
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}
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} else if (gst_structure_has_name (structure, "video/x-raw-rgb")) {
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int depth;
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int bpp;
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int endianness = 0;
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int red_mask = 0;
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int green_mask = 0;
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int blue_mask = 0;
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int alpha_mask = 0;
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gboolean have_alpha;
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ok &= gst_structure_get_int (structure, "depth", &depth);
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ok &= gst_structure_get_int (structure, "bpp", &bpp);
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if (bpp != 8) {
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ok &= gst_structure_get_int (structure, "endianness", &endianness);
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ok &= gst_structure_get_int (structure, "red_mask", &red_mask);
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ok &= gst_structure_get_int (structure, "green_mask", &green_mask);
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ok &= gst_structure_get_int (structure, "blue_mask", &blue_mask);
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}
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have_alpha = gst_structure_get_int (structure, "alpha_mask", &alpha_mask);
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if (depth == 30 && bpp == 32 && endianness == G_BIG_ENDIAN) {
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*format = GST_VIDEO_FORMAT_r210;
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} else if (depth == 24 && bpp == 32 && endianness == G_BIG_ENDIAN) {
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*format = gst_video_format_from_rgb32_masks (red_mask, green_mask,
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blue_mask);
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if (*format == GST_VIDEO_FORMAT_UNKNOWN) {
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ok = FALSE;
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}
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} else if (depth == 32 && bpp == 32 && endianness == G_BIG_ENDIAN &&
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have_alpha) {
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*format = gst_video_format_from_rgba32_masks (red_mask, green_mask,
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blue_mask, alpha_mask);
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if (*format == GST_VIDEO_FORMAT_UNKNOWN) {
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ok = FALSE;
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}
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} else if (depth == 24 && bpp == 24 && endianness == G_BIG_ENDIAN) {
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*format = gst_video_format_from_rgb24_masks (red_mask, green_mask,
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blue_mask);
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if (*format == GST_VIDEO_FORMAT_UNKNOWN) {
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ok = FALSE;
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}
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} else if ((depth == 15 || depth == 16) && bpp == 16 &&
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endianness == G_BYTE_ORDER) {
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*format = gst_video_format_from_rgb16_masks (red_mask, green_mask,
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blue_mask);
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if (*format == GST_VIDEO_FORMAT_UNKNOWN) {
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ok = FALSE;
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}
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} else if (depth == 8 && bpp == 8) {
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*format = GST_VIDEO_FORMAT_RGB8_PALETTED;
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} else if (depth == 64 && bpp == 64) {
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*format = gst_video_format_from_rgba32_masks (red_mask, green_mask,
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blue_mask, alpha_mask);
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if (*format == GST_VIDEO_FORMAT_ARGB) {
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*format = GST_VIDEO_FORMAT_ARGB64;
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} else {
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*format = GST_VIDEO_FORMAT_UNKNOWN;
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ok = FALSE;
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}
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} else {
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ok = FALSE;
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}
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} else if (gst_structure_has_name (structure, "video/x-raw-gray")) {
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int depth;
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int bpp;
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int endianness;
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ok &= gst_structure_get_int (structure, "depth", &depth);
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ok &= gst_structure_get_int (structure, "bpp", &bpp);
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if (bpp > 8)
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ok &= gst_structure_get_int (structure, "endianness", &endianness);
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|
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if (depth == 8 && bpp == 8) {
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*format = GST_VIDEO_FORMAT_GRAY8;
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} else if (depth == 16 && bpp == 16 && endianness == G_BIG_ENDIAN) {
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*format = GST_VIDEO_FORMAT_GRAY16_BE;
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} else if (depth == 16 && bpp == 16 && endianness == G_LITTLE_ENDIAN) {
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*format = GST_VIDEO_FORMAT_GRAY16_LE;
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} else {
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ok = FALSE;
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}
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} else {
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ok = FALSE;
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}
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}
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if (width) {
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ok &= gst_structure_get_int (structure, "width", width);
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}
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|
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if (height) {
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ok &= gst_structure_get_int (structure, "height", height);
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}
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return ok;
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}
|
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|
|
|
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/**
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* gst_video_parse_caps_framerate:
|
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* @caps: pointer to a #GstCaps instance
|
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* @fps_n: pointer to integer to hold numerator of frame rate (output)
|
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* @fps_d: pointer to integer to hold denominator of frame rate (output)
|
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*
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* Extracts the frame rate from @caps and places the values in the locations
|
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* pointed to by @fps_n and @fps_d. Returns TRUE if the values could be
|
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* parsed correctly, FALSE if not.
|
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*
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* This function can be used with #GstCaps that have any media type; it
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* is not limited to formats handled by #GstVideoFormat.
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*
|
|
* Since: 0.10.16
|
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*
|
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* Returns: TRUE if @caps was parsed correctly.
|
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*/
|
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gboolean
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gst_video_parse_caps_framerate (GstCaps * caps, int *fps_n, int *fps_d)
|
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{
|
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GstStructure *structure;
|
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|
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if (!gst_caps_is_fixed (caps))
|
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return FALSE;
|
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|
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structure = gst_caps_get_structure (caps, 0);
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|
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return gst_structure_get_fraction (structure, "framerate", fps_n, fps_d);
|
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}
|
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|
|
/**
|
|
* gst_video_parse_caps_pixel_aspect_ratio:
|
|
* @caps: pointer to a #GstCaps instance
|
|
* @par_n: pointer to numerator of pixel aspect ratio (output)
|
|
* @par_d: pointer to denominator of pixel aspect ratio (output)
|
|
*
|
|
* Extracts the pixel aspect ratio from @caps and places the values in
|
|
* the locations pointed to by @par_n and @par_d. Returns TRUE if the
|
|
* values could be parsed correctly, FALSE if not.
|
|
*
|
|
* This function can be used with #GstCaps that have any media type; it
|
|
* is not limited to formats handled by #GstVideoFormat.
|
|
*
|
|
* Since: 0.10.16
|
|
*
|
|
* Returns: TRUE if @caps was parsed correctly.
|
|
*/
|
|
gboolean
|
|
gst_video_parse_caps_pixel_aspect_ratio (GstCaps * caps, int *par_n, int *par_d)
|
|
{
|
|
GstStructure *structure;
|
|
|
|
if (!gst_caps_is_fixed (caps))
|
|
return FALSE;
|
|
|
|
structure = gst_caps_get_structure (caps, 0);
|
|
|
|
if (!gst_structure_get_fraction (structure, "pixel-aspect-ratio",
|
|
par_n, par_d)) {
|
|
*par_n = 1;
|
|
*par_d = 1;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* gst_video_format_new_caps_interlaced:
|
|
* @format: the #GstVideoFormat describing the raw video format
|
|
* @width: width of video
|
|
* @height: height of video
|
|
* @framerate_n: numerator of frame rate
|
|
* @framerate_d: denominator of frame rate
|
|
* @par_n: numerator of pixel aspect ratio
|
|
* @par_d: denominator of pixel aspect ratio
|
|
* @interlaced: #TRUE if the format is interlaced
|
|
*
|
|
* Creates a new #GstCaps object based on the parameters provided.
|
|
*
|
|
* Since: 0.10.23
|
|
*
|
|
* Returns: a new #GstCaps object, or NULL if there was an error
|
|
*/
|
|
GstCaps *
|
|
gst_video_format_new_caps_interlaced (GstVideoFormat format,
|
|
int width, int height, int framerate_n, int framerate_d, int par_n,
|
|
int par_d, gboolean interlaced)
|
|
{
|
|
GstCaps *res;
|
|
|
|
res =
|
|
gst_video_format_new_caps (format, width, height, framerate_n,
|
|
framerate_d, par_n, par_d);
|
|
if (interlaced && (res != NULL))
|
|
gst_caps_set_simple (res, "interlaced", G_TYPE_BOOLEAN, TRUE, NULL);
|
|
|
|
return res;
|
|
}
|
|
|
|
static GstCaps *
|
|
gst_video_format_new_caps_raw (GstVideoFormat format)
|
|
{
|
|
g_return_val_if_fail (format != GST_VIDEO_FORMAT_UNKNOWN, NULL);
|
|
|
|
if (gst_video_format_is_yuv (format)) {
|
|
return gst_caps_new_simple ("video/x-raw-yuv",
|
|
"format", GST_TYPE_FOURCC, gst_video_format_to_fourcc (format), NULL);
|
|
}
|
|
if (gst_video_format_is_rgb (format)) {
|
|
GstCaps *caps;
|
|
int red_mask = 0;
|
|
int blue_mask = 0;
|
|
int green_mask = 0;
|
|
int alpha_mask;
|
|
int depth;
|
|
int bpp;
|
|
gboolean have_alpha;
|
|
unsigned int mask = 0;
|
|
|
|
switch (format) {
|
|
case GST_VIDEO_FORMAT_RGBx:
|
|
case GST_VIDEO_FORMAT_BGRx:
|
|
case GST_VIDEO_FORMAT_xRGB:
|
|
case GST_VIDEO_FORMAT_xBGR:
|
|
bpp = 32;
|
|
depth = 24;
|
|
have_alpha = FALSE;
|
|
break;
|
|
case GST_VIDEO_FORMAT_RGBA:
|
|
case GST_VIDEO_FORMAT_BGRA:
|
|
case GST_VIDEO_FORMAT_ARGB:
|
|
case GST_VIDEO_FORMAT_ABGR:
|
|
bpp = 32;
|
|
depth = 32;
|
|
have_alpha = TRUE;
|
|
break;
|
|
case GST_VIDEO_FORMAT_RGB:
|
|
case GST_VIDEO_FORMAT_BGR:
|
|
bpp = 24;
|
|
depth = 24;
|
|
have_alpha = FALSE;
|
|
break;
|
|
case GST_VIDEO_FORMAT_RGB16:
|
|
case GST_VIDEO_FORMAT_BGR16:
|
|
bpp = 16;
|
|
depth = 16;
|
|
have_alpha = FALSE;
|
|
break;
|
|
case GST_VIDEO_FORMAT_RGB15:
|
|
case GST_VIDEO_FORMAT_BGR15:
|
|
bpp = 16;
|
|
depth = 15;
|
|
have_alpha = FALSE;
|
|
break;
|
|
case GST_VIDEO_FORMAT_RGB8_PALETTED:
|
|
bpp = 8;
|
|
depth = 8;
|
|
have_alpha = FALSE;
|
|
break;
|
|
case GST_VIDEO_FORMAT_ARGB64:
|
|
bpp = 64;
|
|
depth = 64;
|
|
have_alpha = TRUE;
|
|
break;
|
|
case GST_VIDEO_FORMAT_r210:
|
|
bpp = 32;
|
|
depth = 30;
|
|
have_alpha = FALSE;
|
|
break;
|
|
default:
|
|
return NULL;
|
|
}
|
|
if (bpp == 32 && depth == 30) {
|
|
red_mask = 0x3ff00000;
|
|
green_mask = 0x000ffc00;
|
|
blue_mask = 0x000003ff;
|
|
have_alpha = FALSE;
|
|
} else if (bpp == 32 || bpp == 24 || bpp == 64) {
|
|
if (bpp == 32) {
|
|
mask = 0xff000000;
|
|
} else {
|
|
mask = 0xff0000;
|
|
}
|
|
red_mask =
|
|
mask >> (8 * gst_video_format_get_component_offset (format, 0, 0, 0));
|
|
green_mask =
|
|
mask >> (8 * gst_video_format_get_component_offset (format, 1, 0, 0));
|
|
blue_mask =
|
|
mask >> (8 * gst_video_format_get_component_offset (format, 2, 0, 0));
|
|
} else if (bpp == 16) {
|
|
switch (format) {
|
|
case GST_VIDEO_FORMAT_RGB16:
|
|
red_mask = GST_VIDEO_COMP1_MASK_16_INT;
|
|
green_mask = GST_VIDEO_COMP2_MASK_16_INT;
|
|
blue_mask = GST_VIDEO_COMP3_MASK_16_INT;
|
|
break;
|
|
case GST_VIDEO_FORMAT_BGR16:
|
|
red_mask = GST_VIDEO_COMP3_MASK_16_INT;
|
|
green_mask = GST_VIDEO_COMP2_MASK_16_INT;
|
|
blue_mask = GST_VIDEO_COMP1_MASK_16_INT;
|
|
break;
|
|
break;
|
|
case GST_VIDEO_FORMAT_RGB15:
|
|
red_mask = GST_VIDEO_COMP1_MASK_15_INT;
|
|
green_mask = GST_VIDEO_COMP2_MASK_15_INT;
|
|
blue_mask = GST_VIDEO_COMP3_MASK_15_INT;
|
|
break;
|
|
case GST_VIDEO_FORMAT_BGR15:
|
|
red_mask = GST_VIDEO_COMP3_MASK_15_INT;
|
|
green_mask = GST_VIDEO_COMP2_MASK_15_INT;
|
|
blue_mask = GST_VIDEO_COMP1_MASK_15_INT;
|
|
break;
|
|
default:
|
|
g_assert_not_reached ();
|
|
}
|
|
} else if (bpp != 8) {
|
|
g_assert_not_reached ();
|
|
}
|
|
|
|
caps = gst_caps_new_simple ("video/x-raw-rgb",
|
|
"bpp", G_TYPE_INT, bpp, "depth", G_TYPE_INT, depth, NULL);
|
|
|
|
if (bpp != 8) {
|
|
gst_caps_set_simple (caps,
|
|
"endianness", G_TYPE_INT, G_BIG_ENDIAN,
|
|
"red_mask", G_TYPE_INT, red_mask,
|
|
"green_mask", G_TYPE_INT, green_mask,
|
|
"blue_mask", G_TYPE_INT, blue_mask, NULL);
|
|
}
|
|
|
|
if (have_alpha) {
|
|
alpha_mask =
|
|
mask >> (8 * gst_video_format_get_component_offset (format, 3, 0, 0));
|
|
gst_caps_set_simple (caps, "alpha_mask", G_TYPE_INT, alpha_mask, NULL);
|
|
}
|
|
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, 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, endianness, NULL);
|
|
}
|
|
|
|
return caps;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* gst_video_format_new_template_caps:
|
|
* @format: the #GstVideoFormat describing the raw video format
|
|
*
|
|
* Creates a new #GstCaps object based on the parameters provided.
|
|
* Size, frame rate, and pixel aspect ratio are set to the full
|
|
* range.
|
|
*
|
|
* Since: 0.10.33
|
|
*
|
|
* Returns: a new #GstCaps object, or NULL if there was an error
|
|
*/
|
|
GstCaps *
|
|
gst_video_format_new_template_caps (GstVideoFormat format)
|
|
{
|
|
GstCaps *caps;
|
|
GstStructure *structure;
|
|
|
|
g_return_val_if_fail (format != GST_VIDEO_FORMAT_UNKNOWN, NULL);
|
|
|
|
caps = gst_video_format_new_caps_raw (format);
|
|
if (caps) {
|
|
GValue value = { 0 };
|
|
GValue v = { 0 };
|
|
|
|
structure = gst_caps_get_structure (caps, 0);
|
|
|
|
gst_structure_set (structure,
|
|
"width", GST_TYPE_INT_RANGE, 1, G_MAXINT,
|
|
"height", GST_TYPE_INT_RANGE, 1, G_MAXINT,
|
|
"framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1,
|
|
"pixel-aspect-ratio", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
|
|
|
|
g_value_init (&value, GST_TYPE_LIST);
|
|
g_value_init (&v, G_TYPE_BOOLEAN);
|
|
g_value_set_boolean (&v, TRUE);
|
|
gst_value_list_append_value (&value, &v);
|
|
g_value_set_boolean (&v, FALSE);
|
|
gst_value_list_append_value (&value, &v);
|
|
|
|
gst_structure_set_value (structure, "interlaced", &value);
|
|
|
|
g_value_reset (&value);
|
|
g_value_reset (&v);
|
|
}
|
|
|
|
return caps;
|
|
}
|
|
|
|
/**
|
|
* gst_video_format_new_caps:
|
|
* @format: the #GstVideoFormat describing the raw video format
|
|
* @width: width of video
|
|
* @height: height of video
|
|
* @framerate_n: numerator of frame rate
|
|
* @framerate_d: denominator of frame rate
|
|
* @par_n: numerator of pixel aspect ratio
|
|
* @par_d: denominator of pixel aspect ratio
|
|
*
|
|
* Creates a new #GstCaps object based on the parameters provided.
|
|
*
|
|
* Since: 0.10.16
|
|
*
|
|
* Returns: a new #GstCaps object, or NULL if there was an error
|
|
*/
|
|
GstCaps *
|
|
gst_video_format_new_caps (GstVideoFormat format, int width,
|
|
int height, int framerate_n, int framerate_d, int par_n, int par_d)
|
|
{
|
|
GstCaps *caps;
|
|
GstStructure *structure;
|
|
|
|
g_return_val_if_fail (format != GST_VIDEO_FORMAT_UNKNOWN, NULL);
|
|
g_return_val_if_fail (width > 0 && height > 0, NULL);
|
|
|
|
caps = gst_video_format_new_caps_raw (format);
|
|
if (caps) {
|
|
structure = gst_caps_get_structure (caps, 0);
|
|
|
|
gst_structure_set (structure,
|
|
"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;
|
|
}
|
|
|
|
|
|
/**
|
|
* gst_video_format_from_fourcc:
|
|
* @fourcc: a FOURCC value representing raw YUV video
|
|
*
|
|
* Converts a FOURCC value into the corresponding #GstVideoFormat.
|
|
* If the FOURCC cannot be represented by #GstVideoFormat,
|
|
* #GST_VIDEO_FORMAT_UNKNOWN is returned.
|
|
*
|
|
* Since: 0.10.16
|
|
*
|
|
* Returns: the #GstVideoFormat describing the FOURCC value
|
|
*/
|
|
GstVideoFormat
|
|
gst_video_format_from_fourcc (guint32 fourcc)
|
|
{
|
|
switch (fourcc) {
|
|
case GST_MAKE_FOURCC ('I', '4', '2', '0'):
|
|
return GST_VIDEO_FORMAT_I420;
|
|
case GST_MAKE_FOURCC ('Y', 'V', '1', '2'):
|
|
return GST_VIDEO_FORMAT_YV12;
|
|
case GST_MAKE_FOURCC ('Y', 'U', 'Y', '2'):
|
|
return GST_VIDEO_FORMAT_YUY2;
|
|
case GST_MAKE_FOURCC ('Y', 'V', 'Y', 'U'):
|
|
return GST_VIDEO_FORMAT_YVYU;
|
|
case GST_MAKE_FOURCC ('U', 'Y', 'V', 'Y'):
|
|
return GST_VIDEO_FORMAT_UYVY;
|
|
case GST_MAKE_FOURCC ('A', 'Y', 'U', 'V'):
|
|
return GST_VIDEO_FORMAT_AYUV;
|
|
case GST_MAKE_FOURCC ('Y', '4', '1', 'B'):
|
|
return GST_VIDEO_FORMAT_Y41B;
|
|
case GST_MAKE_FOURCC ('Y', '4', '2', 'B'):
|
|
return GST_VIDEO_FORMAT_Y42B;
|
|
case GST_MAKE_FOURCC ('Y', '4', '4', '4'):
|
|
return GST_VIDEO_FORMAT_Y444;
|
|
case GST_MAKE_FOURCC ('v', '2', '1', '0'):
|
|
return GST_VIDEO_FORMAT_v210;
|
|
case GST_MAKE_FOURCC ('v', '2', '1', '6'):
|
|
return GST_VIDEO_FORMAT_v216;
|
|
case GST_MAKE_FOURCC ('N', 'V', '1', '2'):
|
|
return GST_VIDEO_FORMAT_NV12;
|
|
case GST_MAKE_FOURCC ('N', 'V', '2', '1'):
|
|
return GST_VIDEO_FORMAT_NV21;
|
|
case GST_MAKE_FOURCC ('v', '3', '0', '8'):
|
|
return GST_VIDEO_FORMAT_v308;
|
|
case GST_MAKE_FOURCC ('Y', '8', '0', '0'):
|
|
case GST_MAKE_FOURCC ('Y', '8', ' ', ' '):
|
|
case GST_MAKE_FOURCC ('G', 'R', 'E', 'Y'):
|
|
return GST_VIDEO_FORMAT_Y800;
|
|
case GST_MAKE_FOURCC ('Y', '1', '6', ' '):
|
|
return GST_VIDEO_FORMAT_Y16;
|
|
case GST_MAKE_FOURCC ('U', 'Y', 'V', 'P'):
|
|
return GST_VIDEO_FORMAT_UYVP;
|
|
case GST_MAKE_FOURCC ('A', '4', '2', '0'):
|
|
return GST_VIDEO_FORMAT_A420;
|
|
case GST_MAKE_FOURCC ('Y', 'U', 'V', '9'):
|
|
return GST_VIDEO_FORMAT_YUV9;
|
|
case GST_MAKE_FOURCC ('Y', 'V', 'U', '9'):
|
|
return GST_VIDEO_FORMAT_YVU9;
|
|
case GST_MAKE_FOURCC ('I', 'Y', 'U', '1'):
|
|
return GST_VIDEO_FORMAT_IYU1;
|
|
case GST_MAKE_FOURCC ('A', 'Y', '6', '4'):
|
|
return GST_VIDEO_FORMAT_AYUV64;
|
|
default:
|
|
return GST_VIDEO_FORMAT_UNKNOWN;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gst_video_format_to_fourcc:
|
|
* @format: a #GstVideoFormat video format
|
|
*
|
|
* Converts a #GstVideoFormat value into the corresponding FOURCC. Only
|
|
* a few YUV formats have corresponding FOURCC values. If @format has
|
|
* no corresponding FOURCC value, 0 is returned.
|
|
*
|
|
* Since: 0.10.16
|
|
*
|
|
* Returns: the FOURCC corresponding to @format
|
|
*/
|
|
guint32
|
|
gst_video_format_to_fourcc (GstVideoFormat format)
|
|
{
|
|
g_return_val_if_fail (format != GST_VIDEO_FORMAT_UNKNOWN, 0);
|
|
|
|
switch (format) {
|
|
case GST_VIDEO_FORMAT_I420:
|
|
return GST_MAKE_FOURCC ('I', '4', '2', '0');
|
|
case GST_VIDEO_FORMAT_YV12:
|
|
return GST_MAKE_FOURCC ('Y', 'V', '1', '2');
|
|
case GST_VIDEO_FORMAT_YUY2:
|
|
return GST_MAKE_FOURCC ('Y', 'U', 'Y', '2');
|
|
case GST_VIDEO_FORMAT_YVYU:
|
|
return GST_MAKE_FOURCC ('Y', 'V', 'Y', 'U');
|
|
case GST_VIDEO_FORMAT_UYVY:
|
|
return GST_MAKE_FOURCC ('U', 'Y', 'V', 'Y');
|
|
case GST_VIDEO_FORMAT_AYUV:
|
|
return GST_MAKE_FOURCC ('A', 'Y', 'U', 'V');
|
|
case GST_VIDEO_FORMAT_Y41B:
|
|
return GST_MAKE_FOURCC ('Y', '4', '1', 'B');
|
|
case GST_VIDEO_FORMAT_Y42B:
|
|
return GST_MAKE_FOURCC ('Y', '4', '2', 'B');
|
|
case GST_VIDEO_FORMAT_Y444:
|
|
return GST_MAKE_FOURCC ('Y', '4', '4', '4');
|
|
case GST_VIDEO_FORMAT_v210:
|
|
return GST_MAKE_FOURCC ('v', '2', '1', '0');
|
|
case GST_VIDEO_FORMAT_v216:
|
|
return GST_MAKE_FOURCC ('v', '2', '1', '6');
|
|
case GST_VIDEO_FORMAT_NV12:
|
|
return GST_MAKE_FOURCC ('N', 'V', '1', '2');
|
|
case GST_VIDEO_FORMAT_NV21:
|
|
return GST_MAKE_FOURCC ('N', 'V', '2', '1');
|
|
case GST_VIDEO_FORMAT_v308:
|
|
return GST_MAKE_FOURCC ('v', '3', '0', '8');
|
|
case GST_VIDEO_FORMAT_Y800:
|
|
return GST_MAKE_FOURCC ('Y', '8', '0', '0');
|
|
case GST_VIDEO_FORMAT_Y16:
|
|
return GST_MAKE_FOURCC ('Y', '1', '6', ' ');
|
|
case GST_VIDEO_FORMAT_UYVP:
|
|
return GST_MAKE_FOURCC ('U', 'Y', 'V', 'P');
|
|
case GST_VIDEO_FORMAT_A420:
|
|
return GST_MAKE_FOURCC ('A', '4', '2', '0');
|
|
case GST_VIDEO_FORMAT_YUV9:
|
|
return GST_MAKE_FOURCC ('Y', 'U', 'V', '9');
|
|
case GST_VIDEO_FORMAT_YVU9:
|
|
return GST_MAKE_FOURCC ('Y', 'V', 'U', '9');
|
|
case GST_VIDEO_FORMAT_IYU1:
|
|
return GST_MAKE_FOURCC ('I', 'Y', 'U', '1');
|
|
case GST_VIDEO_FORMAT_AYUV64:
|
|
return GST_MAKE_FOURCC ('A', 'Y', '6', '4');
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* gst_video_format_from_rgb32_masks:
|
|
* @red_mask: red bit mask
|
|
* @green_mask: green bit mask
|
|
* @blue_mask: blue bit mask
|
|
*
|
|
* Converts red, green, blue bit masks into the corresponding
|
|
* #GstVideoFormat.
|
|
*
|
|
* Since: 0.10.16
|
|
*
|
|
* Returns: the #GstVideoFormat corresponding to the bit masks
|
|
*/
|
|
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;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
/**
|
|
* gst_video_format_is_rgb:
|
|
* @format: a #GstVideoFormat
|
|
*
|
|
* Determine whether the video format is an RGB format.
|
|
*
|
|
* Since: 0.10.16
|
|
*
|
|
* Returns: TRUE if @format represents RGB video
|
|
*/
|
|
gboolean
|
|
gst_video_format_is_rgb (GstVideoFormat format)
|
|
{
|
|
switch (format) {
|
|
case GST_VIDEO_FORMAT_I420:
|
|
case GST_VIDEO_FORMAT_YV12:
|
|
case GST_VIDEO_FORMAT_YUY2:
|
|
case GST_VIDEO_FORMAT_YVYU:
|
|
case GST_VIDEO_FORMAT_UYVY:
|
|
case GST_VIDEO_FORMAT_AYUV:
|
|
case GST_VIDEO_FORMAT_Y41B:
|
|
case GST_VIDEO_FORMAT_Y42B:
|
|
case GST_VIDEO_FORMAT_Y444:
|
|
case GST_VIDEO_FORMAT_v210:
|
|
case GST_VIDEO_FORMAT_v216:
|
|
case GST_VIDEO_FORMAT_NV12:
|
|
case GST_VIDEO_FORMAT_NV21:
|
|
case GST_VIDEO_FORMAT_v308:
|
|
case GST_VIDEO_FORMAT_UYVP:
|
|
case GST_VIDEO_FORMAT_A420:
|
|
case GST_VIDEO_FORMAT_YUV9:
|
|
case GST_VIDEO_FORMAT_YVU9:
|
|
case GST_VIDEO_FORMAT_IYU1:
|
|
case GST_VIDEO_FORMAT_AYUV64:
|
|
return FALSE;
|
|
case GST_VIDEO_FORMAT_RGBx:
|
|
case GST_VIDEO_FORMAT_BGRx:
|
|
case GST_VIDEO_FORMAT_xRGB:
|
|
case GST_VIDEO_FORMAT_xBGR:
|
|
case GST_VIDEO_FORMAT_RGBA:
|
|
case GST_VIDEO_FORMAT_BGRA:
|
|
case GST_VIDEO_FORMAT_ARGB:
|
|
case GST_VIDEO_FORMAT_ABGR:
|
|
case GST_VIDEO_FORMAT_RGB:
|
|
case GST_VIDEO_FORMAT_BGR:
|
|
case GST_VIDEO_FORMAT_RGB16:
|
|
case GST_VIDEO_FORMAT_BGR16:
|
|
case GST_VIDEO_FORMAT_RGB15:
|
|
case GST_VIDEO_FORMAT_BGR15:
|
|
case GST_VIDEO_FORMAT_RGB8_PALETTED:
|
|
case GST_VIDEO_FORMAT_ARGB64:
|
|
case GST_VIDEO_FORMAT_r210:
|
|
return TRUE;
|
|
default:
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gst_video_format_is_yuv:
|
|
* @format: a #GstVideoFormat
|
|
*
|
|
* Determine whether the video format is a YUV format.
|
|
*
|
|
* Since: 0.10.16
|
|
*
|
|
* Returns: TRUE if @format represents YUV video
|
|
*/
|
|
gboolean
|
|
gst_video_format_is_yuv (GstVideoFormat format)
|
|
{
|
|
switch (format) {
|
|
case GST_VIDEO_FORMAT_I420:
|
|
case GST_VIDEO_FORMAT_YV12:
|
|
case GST_VIDEO_FORMAT_YUY2:
|
|
case GST_VIDEO_FORMAT_YVYU:
|
|
case GST_VIDEO_FORMAT_UYVY:
|
|
case GST_VIDEO_FORMAT_AYUV:
|
|
case GST_VIDEO_FORMAT_Y41B:
|
|
case GST_VIDEO_FORMAT_Y42B:
|
|
case GST_VIDEO_FORMAT_Y444:
|
|
case GST_VIDEO_FORMAT_v210:
|
|
case GST_VIDEO_FORMAT_v216:
|
|
case GST_VIDEO_FORMAT_NV12:
|
|
case GST_VIDEO_FORMAT_NV21:
|
|
case GST_VIDEO_FORMAT_v308:
|
|
case GST_VIDEO_FORMAT_Y800:
|
|
case GST_VIDEO_FORMAT_Y16:
|
|
case GST_VIDEO_FORMAT_UYVP:
|
|
case GST_VIDEO_FORMAT_A420:
|
|
case GST_VIDEO_FORMAT_YUV9:
|
|
case GST_VIDEO_FORMAT_YVU9:
|
|
case GST_VIDEO_FORMAT_IYU1:
|
|
case GST_VIDEO_FORMAT_AYUV64:
|
|
return TRUE;
|
|
case GST_VIDEO_FORMAT_RGBx:
|
|
case GST_VIDEO_FORMAT_BGRx:
|
|
case GST_VIDEO_FORMAT_xRGB:
|
|
case GST_VIDEO_FORMAT_xBGR:
|
|
case GST_VIDEO_FORMAT_RGBA:
|
|
case GST_VIDEO_FORMAT_BGRA:
|
|
case GST_VIDEO_FORMAT_ARGB:
|
|
case GST_VIDEO_FORMAT_ABGR:
|
|
case GST_VIDEO_FORMAT_RGB:
|
|
case GST_VIDEO_FORMAT_BGR:
|
|
case GST_VIDEO_FORMAT_RGB16:
|
|
case GST_VIDEO_FORMAT_BGR16:
|
|
case GST_VIDEO_FORMAT_RGB15:
|
|
case GST_VIDEO_FORMAT_BGR15:
|
|
case GST_VIDEO_FORMAT_RGB8_PALETTED:
|
|
case GST_VIDEO_FORMAT_ARGB64:
|
|
case GST_VIDEO_FORMAT_r210:
|
|
return FALSE;
|
|
default:
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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:
|
|
case GST_VIDEO_FORMAT_Y800:
|
|
case GST_VIDEO_FORMAT_Y16:
|
|
return TRUE;
|
|
default:
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gst_video_format_has_alpha:
|
|
* @format: a #GstVideoFormat
|
|
*
|
|
* Returns TRUE or FALSE depending on if the video format provides an
|
|
* alpha channel.
|
|
*
|
|
* Since: 0.10.16
|
|
*
|
|
* Returns: TRUE if @format has an alpha channel
|
|
*/
|
|
gboolean
|
|
gst_video_format_has_alpha (GstVideoFormat format)
|
|
{
|
|
switch (format) {
|
|
case GST_VIDEO_FORMAT_I420:
|
|
case GST_VIDEO_FORMAT_YV12:
|
|
case GST_VIDEO_FORMAT_YUY2:
|
|
case GST_VIDEO_FORMAT_YVYU:
|
|
case GST_VIDEO_FORMAT_UYVY:
|
|
case GST_VIDEO_FORMAT_Y41B:
|
|
case GST_VIDEO_FORMAT_Y42B:
|
|
case GST_VIDEO_FORMAT_Y444:
|
|
case GST_VIDEO_FORMAT_v210:
|
|
case GST_VIDEO_FORMAT_v216:
|
|
case GST_VIDEO_FORMAT_NV12:
|
|
case GST_VIDEO_FORMAT_NV21:
|
|
case GST_VIDEO_FORMAT_v308:
|
|
case GST_VIDEO_FORMAT_Y800:
|
|
case GST_VIDEO_FORMAT_Y16:
|
|
case GST_VIDEO_FORMAT_UYVP:
|
|
case GST_VIDEO_FORMAT_YUV9:
|
|
case GST_VIDEO_FORMAT_YVU9:
|
|
case GST_VIDEO_FORMAT_IYU1:
|
|
return FALSE;
|
|
case GST_VIDEO_FORMAT_AYUV:
|
|
case GST_VIDEO_FORMAT_RGBA:
|
|
case GST_VIDEO_FORMAT_BGRA:
|
|
case GST_VIDEO_FORMAT_ARGB:
|
|
case GST_VIDEO_FORMAT_ABGR:
|
|
case GST_VIDEO_FORMAT_A420:
|
|
case GST_VIDEO_FORMAT_RGB8_PALETTED:
|
|
case GST_VIDEO_FORMAT_ARGB64:
|
|
case GST_VIDEO_FORMAT_AYUV64:
|
|
return TRUE;
|
|
case GST_VIDEO_FORMAT_RGBx:
|
|
case GST_VIDEO_FORMAT_BGRx:
|
|
case GST_VIDEO_FORMAT_xRGB:
|
|
case GST_VIDEO_FORMAT_xBGR:
|
|
case GST_VIDEO_FORMAT_RGB:
|
|
case GST_VIDEO_FORMAT_BGR:
|
|
case GST_VIDEO_FORMAT_RGB16:
|
|
case GST_VIDEO_FORMAT_BGR16:
|
|
case GST_VIDEO_FORMAT_RGB15:
|
|
case GST_VIDEO_FORMAT_BGR15:
|
|
case GST_VIDEO_FORMAT_r210:
|
|
return FALSE;
|
|
default:
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gst_video_format_get_component_depth:
|
|
* @format: a #GstVideoFormat
|
|
* @component: the video component (e.g. 0 for 'R' in RGB)
|
|
*
|
|
* Returns the number of bits used to encode an individual pixel of
|
|
* a given @component. Typically this is 8, although higher and lower
|
|
* values are possible for some formats.
|
|
*
|
|
* Since: 0.10.33
|
|
*
|
|
* Returns: depth of component
|
|
*/
|
|
int
|
|
gst_video_format_get_component_depth (GstVideoFormat format, int component)
|
|
{
|
|
if (component == 3 && !gst_video_format_has_alpha (format))
|
|
return 0;
|
|
|
|
switch (format) {
|
|
case GST_VIDEO_FORMAT_RGB16:
|
|
case GST_VIDEO_FORMAT_BGR16:
|
|
if (component == 1)
|
|
return 6;
|
|
return 5;
|
|
case GST_VIDEO_FORMAT_RGB15:
|
|
case GST_VIDEO_FORMAT_BGR15:
|
|
return 5;
|
|
case GST_VIDEO_FORMAT_I420:
|
|
case GST_VIDEO_FORMAT_YV12:
|
|
case GST_VIDEO_FORMAT_YUY2:
|
|
case GST_VIDEO_FORMAT_YVYU:
|
|
case GST_VIDEO_FORMAT_UYVY:
|
|
case GST_VIDEO_FORMAT_Y41B:
|
|
case GST_VIDEO_FORMAT_Y42B:
|
|
case GST_VIDEO_FORMAT_Y444:
|
|
case GST_VIDEO_FORMAT_NV12:
|
|
case GST_VIDEO_FORMAT_NV21:
|
|
case GST_VIDEO_FORMAT_v308:
|
|
case GST_VIDEO_FORMAT_Y800:
|
|
case GST_VIDEO_FORMAT_YUV9:
|
|
case GST_VIDEO_FORMAT_YVU9:
|
|
case GST_VIDEO_FORMAT_IYU1:
|
|
case GST_VIDEO_FORMAT_AYUV:
|
|
case GST_VIDEO_FORMAT_RGBA:
|
|
case GST_VIDEO_FORMAT_BGRA:
|
|
case GST_VIDEO_FORMAT_ARGB:
|
|
case GST_VIDEO_FORMAT_ABGR:
|
|
case GST_VIDEO_FORMAT_A420:
|
|
case GST_VIDEO_FORMAT_RGB8_PALETTED:
|
|
case GST_VIDEO_FORMAT_RGBx:
|
|
case GST_VIDEO_FORMAT_BGRx:
|
|
case GST_VIDEO_FORMAT_xRGB:
|
|
case GST_VIDEO_FORMAT_xBGR:
|
|
case GST_VIDEO_FORMAT_RGB:
|
|
case GST_VIDEO_FORMAT_BGR:
|
|
default:
|
|
return 8;
|
|
case GST_VIDEO_FORMAT_v210:
|
|
case GST_VIDEO_FORMAT_UYVP:
|
|
case GST_VIDEO_FORMAT_r210:
|
|
return 10;
|
|
case GST_VIDEO_FORMAT_Y16:
|
|
case GST_VIDEO_FORMAT_v216:
|
|
case GST_VIDEO_FORMAT_ARGB64:
|
|
case GST_VIDEO_FORMAT_AYUV64:
|
|
return 16;
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* gst_video_format_get_row_stride:
|
|
* @format: a #GstVideoFormat
|
|
* @component: the component index
|
|
* @width: the width of video
|
|
*
|
|
* Calculates the row stride (number of bytes from one row of pixels to
|
|
* the next) for the video component with an index of @component. For
|
|
* YUV video, Y, U, and V have component indices of 0, 1, and 2,
|
|
* respectively. For RGB video, R, G, and B have component indicies of
|
|
* 0, 1, and 2, respectively. Alpha channels, if present, have a component
|
|
* index of 3. The @width parameter always represents the width of the
|
|
* video, not the component.
|
|
*
|
|
* Since: 0.10.16
|
|
*
|
|
* Returns: row stride of component @component
|
|
*/
|
|
int
|
|
gst_video_format_get_row_stride (GstVideoFormat format, int component,
|
|
int width)
|
|
{
|
|
g_return_val_if_fail (format != GST_VIDEO_FORMAT_UNKNOWN, 0);
|
|
g_return_val_if_fail (component >= 0 && component <= 3, 0);
|
|
g_return_val_if_fail (width > 0, 0);
|
|
|
|
switch (format) {
|
|
case GST_VIDEO_FORMAT_I420:
|
|
case GST_VIDEO_FORMAT_YV12:
|
|
if (component == 0) {
|
|
return GST_ROUND_UP_4 (width);
|
|
} else {
|
|
return GST_ROUND_UP_4 (GST_ROUND_UP_2 (width) / 2);
|
|
}
|
|
case GST_VIDEO_FORMAT_YUY2:
|
|
case GST_VIDEO_FORMAT_YVYU:
|
|
case GST_VIDEO_FORMAT_UYVY:
|
|
return GST_ROUND_UP_4 (width * 2);
|
|
case GST_VIDEO_FORMAT_AYUV:
|
|
case GST_VIDEO_FORMAT_RGBx:
|
|
case GST_VIDEO_FORMAT_BGRx:
|
|
case GST_VIDEO_FORMAT_xRGB:
|
|
case GST_VIDEO_FORMAT_xBGR:
|
|
case GST_VIDEO_FORMAT_RGBA:
|
|
case GST_VIDEO_FORMAT_BGRA:
|
|
case GST_VIDEO_FORMAT_ARGB:
|
|
case GST_VIDEO_FORMAT_ABGR:
|
|
case GST_VIDEO_FORMAT_r210:
|
|
return width * 4;
|
|
case GST_VIDEO_FORMAT_RGB16:
|
|
case GST_VIDEO_FORMAT_BGR16:
|
|
case GST_VIDEO_FORMAT_RGB15:
|
|
case GST_VIDEO_FORMAT_BGR15:
|
|
return GST_ROUND_UP_4 (width * 2);
|
|
case GST_VIDEO_FORMAT_RGB:
|
|
case GST_VIDEO_FORMAT_BGR:
|
|
case GST_VIDEO_FORMAT_v308:
|
|
return GST_ROUND_UP_4 (width * 3);
|
|
case GST_VIDEO_FORMAT_Y41B:
|
|
if (component == 0) {
|
|
return GST_ROUND_UP_4 (width);
|
|
} else {
|
|
return GST_ROUND_UP_16 (width) / 4;
|
|
}
|
|
case GST_VIDEO_FORMAT_Y42B:
|
|
if (component == 0) {
|
|
return GST_ROUND_UP_4 (width);
|
|
} else {
|
|
return GST_ROUND_UP_8 (width) / 2;
|
|
}
|
|
case GST_VIDEO_FORMAT_Y444:
|
|
return GST_ROUND_UP_4 (width);
|
|
case GST_VIDEO_FORMAT_v210:
|
|
return ((width + 47) / 48) * 128;
|
|
case GST_VIDEO_FORMAT_v216:
|
|
return GST_ROUND_UP_8 (width * 4);
|
|
case GST_VIDEO_FORMAT_NV12:
|
|
case GST_VIDEO_FORMAT_NV21:
|
|
return GST_ROUND_UP_4 (width);
|
|
case GST_VIDEO_FORMAT_GRAY8:
|
|
case GST_VIDEO_FORMAT_Y800:
|
|
return GST_ROUND_UP_4 (width);
|
|
case GST_VIDEO_FORMAT_GRAY16_BE:
|
|
case GST_VIDEO_FORMAT_GRAY16_LE:
|
|
case GST_VIDEO_FORMAT_Y16:
|
|
return GST_ROUND_UP_4 (width * 2);
|
|
case GST_VIDEO_FORMAT_UYVP:
|
|
return GST_ROUND_UP_4 ((width * 2 * 5 + 3) / 4);
|
|
case GST_VIDEO_FORMAT_A420:
|
|
if (component == 0 || component == 3) {
|
|
return GST_ROUND_UP_4 (width);
|
|
} else {
|
|
return GST_ROUND_UP_4 (GST_ROUND_UP_2 (width) / 2);
|
|
}
|
|
case GST_VIDEO_FORMAT_RGB8_PALETTED:
|
|
return GST_ROUND_UP_4 (width);
|
|
case GST_VIDEO_FORMAT_YUV9:
|
|
case GST_VIDEO_FORMAT_YVU9:
|
|
if (component == 0) {
|
|
return GST_ROUND_UP_4 (width);
|
|
} else {
|
|
return GST_ROUND_UP_4 (GST_ROUND_UP_4 (width) / 4);
|
|
}
|
|
case GST_VIDEO_FORMAT_IYU1:
|
|
return GST_ROUND_UP_4 (GST_ROUND_UP_4 (width) +
|
|
GST_ROUND_UP_4 (width) / 2);
|
|
case GST_VIDEO_FORMAT_ARGB64:
|
|
case GST_VIDEO_FORMAT_AYUV64:
|
|
return width * 8;
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gst_video_format_get_pixel_stride:
|
|
* @format: a #GstVideoFormat
|
|
* @component: the component index
|
|
*
|
|
* Calculates the pixel stride (number of bytes from one pixel to the
|
|
* pixel to its immediate left) for the video component with an index
|
|
* of @component. See @gst_video_format_get_row_stride for a description
|
|
* of the component index.
|
|
*
|
|
* Since: 0.10.16
|
|
*
|
|
* Returns: pixel stride of component @component
|
|
*/
|
|
int
|
|
gst_video_format_get_pixel_stride (GstVideoFormat format, int component)
|
|
{
|
|
g_return_val_if_fail (format != GST_VIDEO_FORMAT_UNKNOWN, 0);
|
|
g_return_val_if_fail (component >= 0 && component <= 3, 0);
|
|
|
|
switch (format) {
|
|
case GST_VIDEO_FORMAT_I420:
|
|
case GST_VIDEO_FORMAT_YV12:
|
|
case GST_VIDEO_FORMAT_Y41B:
|
|
case GST_VIDEO_FORMAT_Y42B:
|
|
case GST_VIDEO_FORMAT_Y444:
|
|
case GST_VIDEO_FORMAT_A420:
|
|
case GST_VIDEO_FORMAT_YUV9:
|
|
case GST_VIDEO_FORMAT_YVU9:
|
|
return 1;
|
|
case GST_VIDEO_FORMAT_YUY2:
|
|
case GST_VIDEO_FORMAT_YVYU:
|
|
case GST_VIDEO_FORMAT_UYVY:
|
|
if (component == 0) {
|
|
return 2;
|
|
} else {
|
|
return 4;
|
|
}
|
|
case GST_VIDEO_FORMAT_IYU1:
|
|
/* doesn't make much sense for IYU1 because it's 1 or 3
|
|
* for luma depending on position */
|
|
return 0;
|
|
case GST_VIDEO_FORMAT_AYUV:
|
|
case GST_VIDEO_FORMAT_RGBx:
|
|
case GST_VIDEO_FORMAT_BGRx:
|
|
case GST_VIDEO_FORMAT_xRGB:
|
|
case GST_VIDEO_FORMAT_xBGR:
|
|
case GST_VIDEO_FORMAT_RGBA:
|
|
case GST_VIDEO_FORMAT_BGRA:
|
|
case GST_VIDEO_FORMAT_ARGB:
|
|
case GST_VIDEO_FORMAT_ABGR:
|
|
case GST_VIDEO_FORMAT_r210:
|
|
return 4;
|
|
case GST_VIDEO_FORMAT_RGB16:
|
|
case GST_VIDEO_FORMAT_BGR16:
|
|
case GST_VIDEO_FORMAT_RGB15:
|
|
case GST_VIDEO_FORMAT_BGR15:
|
|
return 2;
|
|
case GST_VIDEO_FORMAT_RGB:
|
|
case GST_VIDEO_FORMAT_BGR:
|
|
case GST_VIDEO_FORMAT_v308:
|
|
return 3;
|
|
case GST_VIDEO_FORMAT_v210:
|
|
/* v210 is packed at the bit level, so pixel stride doesn't make sense */
|
|
return 0;
|
|
case GST_VIDEO_FORMAT_v216:
|
|
if (component == 0) {
|
|
return 4;
|
|
} else {
|
|
return 8;
|
|
}
|
|
case GST_VIDEO_FORMAT_NV12:
|
|
case GST_VIDEO_FORMAT_NV21:
|
|
if (component == 0) {
|
|
return 1;
|
|
} else {
|
|
return 2;
|
|
}
|
|
case GST_VIDEO_FORMAT_GRAY8:
|
|
case GST_VIDEO_FORMAT_Y800:
|
|
return 1;
|
|
case GST_VIDEO_FORMAT_GRAY16_BE:
|
|
case GST_VIDEO_FORMAT_GRAY16_LE:
|
|
case GST_VIDEO_FORMAT_Y16:
|
|
return 2;
|
|
case GST_VIDEO_FORMAT_UYVP:
|
|
/* UYVP is packed at the bit level, so pixel stride doesn't make sense */
|
|
return 0;
|
|
case GST_VIDEO_FORMAT_RGB8_PALETTED:
|
|
return 1;
|
|
case GST_VIDEO_FORMAT_ARGB64:
|
|
case GST_VIDEO_FORMAT_AYUV64:
|
|
return 8;
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gst_video_format_get_component_width:
|
|
* @format: a #GstVideoFormat
|
|
* @component: the component index
|
|
* @width: the width of video
|
|
*
|
|
* Calculates the width of the component. See
|
|
* @gst_video_format_get_row_stride for a description
|
|
* of the component index.
|
|
*
|
|
* Since: 0.10.16
|
|
*
|
|
* Returns: width of component @component
|
|
*/
|
|
int
|
|
gst_video_format_get_component_width (GstVideoFormat format,
|
|
int component, int width)
|
|
{
|
|
g_return_val_if_fail (format != GST_VIDEO_FORMAT_UNKNOWN, 0);
|
|
g_return_val_if_fail (component >= 0 && component <= 3, 0);
|
|
g_return_val_if_fail (width > 0, 0);
|
|
|
|
switch (format) {
|
|
case GST_VIDEO_FORMAT_I420:
|
|
case GST_VIDEO_FORMAT_YV12:
|
|
case GST_VIDEO_FORMAT_YUY2:
|
|
case GST_VIDEO_FORMAT_YVYU:
|
|
case GST_VIDEO_FORMAT_UYVY:
|
|
case GST_VIDEO_FORMAT_Y42B:
|
|
case GST_VIDEO_FORMAT_v210:
|
|
case GST_VIDEO_FORMAT_v216:
|
|
case GST_VIDEO_FORMAT_NV12:
|
|
case GST_VIDEO_FORMAT_NV21:
|
|
case GST_VIDEO_FORMAT_UYVP:
|
|
if (component == 0) {
|
|
return width;
|
|
} else {
|
|
return GST_ROUND_UP_2 (width) / 2;
|
|
}
|
|
case GST_VIDEO_FORMAT_Y41B:
|
|
case GST_VIDEO_FORMAT_YUV9:
|
|
case GST_VIDEO_FORMAT_YVU9:
|
|
case GST_VIDEO_FORMAT_IYU1:
|
|
if (component == 0) {
|
|
return width;
|
|
} else {
|
|
return GST_ROUND_UP_4 (width) / 4;
|
|
}
|
|
case GST_VIDEO_FORMAT_AYUV:
|
|
case GST_VIDEO_FORMAT_RGBx:
|
|
case GST_VIDEO_FORMAT_BGRx:
|
|
case GST_VIDEO_FORMAT_xRGB:
|
|
case GST_VIDEO_FORMAT_xBGR:
|
|
case GST_VIDEO_FORMAT_RGBA:
|
|
case GST_VIDEO_FORMAT_BGRA:
|
|
case GST_VIDEO_FORMAT_ARGB:
|
|
case GST_VIDEO_FORMAT_ABGR:
|
|
case GST_VIDEO_FORMAT_RGB:
|
|
case GST_VIDEO_FORMAT_BGR:
|
|
case GST_VIDEO_FORMAT_RGB16:
|
|
case GST_VIDEO_FORMAT_BGR16:
|
|
case GST_VIDEO_FORMAT_RGB15:
|
|
case GST_VIDEO_FORMAT_BGR15:
|
|
case GST_VIDEO_FORMAT_Y444:
|
|
case GST_VIDEO_FORMAT_v308:
|
|
case GST_VIDEO_FORMAT_GRAY8:
|
|
case GST_VIDEO_FORMAT_GRAY16_BE:
|
|
case GST_VIDEO_FORMAT_GRAY16_LE:
|
|
case GST_VIDEO_FORMAT_Y800:
|
|
case GST_VIDEO_FORMAT_Y16:
|
|
case GST_VIDEO_FORMAT_RGB8_PALETTED:
|
|
case GST_VIDEO_FORMAT_ARGB64:
|
|
case GST_VIDEO_FORMAT_AYUV64:
|
|
case GST_VIDEO_FORMAT_r210:
|
|
return width;
|
|
case GST_VIDEO_FORMAT_A420:
|
|
if (component == 0 || component == 3) {
|
|
return width;
|
|
} else {
|
|
return GST_ROUND_UP_2 (width) / 2;
|
|
}
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gst_video_format_get_component_height:
|
|
* @format: a #GstVideoFormat
|
|
* @component: the component index
|
|
* @height: the height of video
|
|
*
|
|
* Calculates the height of the component. See
|
|
* @gst_video_format_get_row_stride for a description
|
|
* of the component index.
|
|
*
|
|
* Since: 0.10.16
|
|
*
|
|
* Returns: height of component @component
|
|
*/
|
|
int
|
|
gst_video_format_get_component_height (GstVideoFormat format,
|
|
int component, int height)
|
|
{
|
|
g_return_val_if_fail (format != GST_VIDEO_FORMAT_UNKNOWN, 0);
|
|
g_return_val_if_fail (component >= 0 && component <= 3, 0);
|
|
g_return_val_if_fail (height > 0, 0);
|
|
|
|
switch (format) {
|
|
case GST_VIDEO_FORMAT_I420:
|
|
case GST_VIDEO_FORMAT_YV12:
|
|
case GST_VIDEO_FORMAT_NV12:
|
|
case GST_VIDEO_FORMAT_NV21:
|
|
if (component == 0) {
|
|
return height;
|
|
} else {
|
|
return GST_ROUND_UP_2 (height) / 2;
|
|
}
|
|
case GST_VIDEO_FORMAT_Y41B:
|
|
case GST_VIDEO_FORMAT_Y42B:
|
|
case GST_VIDEO_FORMAT_YUY2:
|
|
case GST_VIDEO_FORMAT_YVYU:
|
|
case GST_VIDEO_FORMAT_UYVY:
|
|
case GST_VIDEO_FORMAT_AYUV:
|
|
case GST_VIDEO_FORMAT_RGBx:
|
|
case GST_VIDEO_FORMAT_BGRx:
|
|
case GST_VIDEO_FORMAT_xRGB:
|
|
case GST_VIDEO_FORMAT_xBGR:
|
|
case GST_VIDEO_FORMAT_RGBA:
|
|
case GST_VIDEO_FORMAT_BGRA:
|
|
case GST_VIDEO_FORMAT_ARGB:
|
|
case GST_VIDEO_FORMAT_ABGR:
|
|
case GST_VIDEO_FORMAT_RGB:
|
|
case GST_VIDEO_FORMAT_BGR:
|
|
case GST_VIDEO_FORMAT_RGB16:
|
|
case GST_VIDEO_FORMAT_BGR16:
|
|
case GST_VIDEO_FORMAT_RGB15:
|
|
case GST_VIDEO_FORMAT_BGR15:
|
|
case GST_VIDEO_FORMAT_Y444:
|
|
case GST_VIDEO_FORMAT_v210:
|
|
case GST_VIDEO_FORMAT_v216:
|
|
case GST_VIDEO_FORMAT_v308:
|
|
case GST_VIDEO_FORMAT_GRAY8:
|
|
case GST_VIDEO_FORMAT_GRAY16_BE:
|
|
case GST_VIDEO_FORMAT_GRAY16_LE:
|
|
case GST_VIDEO_FORMAT_Y800:
|
|
case GST_VIDEO_FORMAT_Y16:
|
|
case GST_VIDEO_FORMAT_UYVP:
|
|
case GST_VIDEO_FORMAT_RGB8_PALETTED:
|
|
case GST_VIDEO_FORMAT_IYU1:
|
|
case GST_VIDEO_FORMAT_ARGB64:
|
|
case GST_VIDEO_FORMAT_AYUV64:
|
|
case GST_VIDEO_FORMAT_r210:
|
|
return height;
|
|
case GST_VIDEO_FORMAT_A420:
|
|
if (component == 0 || component == 3) {
|
|
return height;
|
|
} else {
|
|
return GST_ROUND_UP_2 (height) / 2;
|
|
}
|
|
case GST_VIDEO_FORMAT_YUV9:
|
|
case GST_VIDEO_FORMAT_YVU9:
|
|
if (component == 0) {
|
|
return height;
|
|
} else {
|
|
return GST_ROUND_UP_4 (height) / 4;
|
|
}
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gst_video_format_get_component_offset:
|
|
* @format: a #GstVideoFormat
|
|
* @component: the component index
|
|
* @width: the width of video
|
|
* @height: the height of video
|
|
*
|
|
* Calculates the offset (in bytes) of the first pixel of the component
|
|
* with index @component. For packed formats, this will typically be a
|
|
* small integer (0, 1, 2, 3). For planar formats, this will be a
|
|
* (relatively) large offset to the beginning of the second or third
|
|
* component planes. See @gst_video_format_get_row_stride for a description
|
|
* of the component index.
|
|
*
|
|
* Since: 0.10.16
|
|
*
|
|
* Returns: offset of component @component
|
|
*/
|
|
int
|
|
gst_video_format_get_component_offset (GstVideoFormat format,
|
|
int component, int width, int height)
|
|
{
|
|
g_return_val_if_fail (format != GST_VIDEO_FORMAT_UNKNOWN, 0);
|
|
g_return_val_if_fail (component >= 0 && component <= 3, 0);
|
|
g_return_val_if_fail ((!gst_video_format_is_yuv (format)) || (width > 0
|
|
&& height > 0), 0);
|
|
|
|
switch (format) {
|
|
case GST_VIDEO_FORMAT_I420:
|
|
if (component == 0)
|
|
return 0;
|
|
if (component == 1)
|
|
return GST_ROUND_UP_4 (width) * GST_ROUND_UP_2 (height);
|
|
if (component == 2) {
|
|
return GST_ROUND_UP_4 (width) * GST_ROUND_UP_2 (height) +
|
|
GST_ROUND_UP_4 (GST_ROUND_UP_2 (width) / 2) *
|
|
(GST_ROUND_UP_2 (height) / 2);
|
|
}
|
|
break;
|
|
case GST_VIDEO_FORMAT_YV12: /* same as I420, but components 1+2 swapped */
|
|
if (component == 0)
|
|
return 0;
|
|
if (component == 2)
|
|
return GST_ROUND_UP_4 (width) * GST_ROUND_UP_2 (height);
|
|
if (component == 1) {
|
|
return GST_ROUND_UP_4 (width) * GST_ROUND_UP_2 (height) +
|
|
GST_ROUND_UP_4 (GST_ROUND_UP_2 (width) / 2) *
|
|
(GST_ROUND_UP_2 (height) / 2);
|
|
}
|
|
break;
|
|
case GST_VIDEO_FORMAT_YUY2:
|
|
if (component == 0)
|
|
return 0;
|
|
if (component == 1)
|
|
return 1;
|
|
if (component == 2)
|
|
return 3;
|
|
break;
|
|
case GST_VIDEO_FORMAT_YVYU:
|
|
if (component == 0)
|
|
return 0;
|
|
if (component == 1)
|
|
return 3;
|
|
if (component == 2)
|
|
return 1;
|
|
break;
|
|
case GST_VIDEO_FORMAT_UYVY:
|
|
if (component == 0)
|
|
return 1;
|
|
if (component == 1)
|
|
return 0;
|
|
if (component == 2)
|
|
return 2;
|
|
break;
|
|
case GST_VIDEO_FORMAT_AYUV:
|
|
if (component == 0)
|
|
return 1;
|
|
if (component == 1)
|
|
return 2;
|
|
if (component == 2)
|
|
return 3;
|
|
if (component == 3)
|
|
return 0;
|
|
break;
|
|
case GST_VIDEO_FORMAT_RGBx:
|
|
case GST_VIDEO_FORMAT_RGBA:
|
|
if (component == 0)
|
|
return 0;
|
|
if (component == 1)
|
|
return 1;
|
|
if (component == 2)
|
|
return 2;
|
|
if (component == 3)
|
|
return 3;
|
|
break;
|
|
case GST_VIDEO_FORMAT_BGRx:
|
|
case GST_VIDEO_FORMAT_BGRA:
|
|
if (component == 0)
|
|
return 2;
|
|
if (component == 1)
|
|
return 1;
|
|
if (component == 2)
|
|
return 0;
|
|
if (component == 3)
|
|
return 3;
|
|
break;
|
|
case GST_VIDEO_FORMAT_xRGB:
|
|
case GST_VIDEO_FORMAT_ARGB:
|
|
if (component == 0)
|
|
return 1;
|
|
if (component == 1)
|
|
return 2;
|
|
if (component == 2)
|
|
return 3;
|
|
if (component == 3)
|
|
return 0;
|
|
break;
|
|
case GST_VIDEO_FORMAT_xBGR:
|
|
case GST_VIDEO_FORMAT_ABGR:
|
|
if (component == 0)
|
|
return 3;
|
|
if (component == 1)
|
|
return 2;
|
|
if (component == 2)
|
|
return 1;
|
|
if (component == 3)
|
|
return 0;
|
|
break;
|
|
case GST_VIDEO_FORMAT_RGB:
|
|
case GST_VIDEO_FORMAT_v308:
|
|
if (component == 0)
|
|
return 0;
|
|
if (component == 1)
|
|
return 1;
|
|
if (component == 2)
|
|
return 2;
|
|
break;
|
|
case GST_VIDEO_FORMAT_BGR:
|
|
if (component == 0)
|
|
return 2;
|
|
if (component == 1)
|
|
return 1;
|
|
if (component == 2)
|
|
return 0;
|
|
break;
|
|
case GST_VIDEO_FORMAT_Y41B:
|
|
if (component == 0)
|
|
return 0;
|
|
if (component == 1)
|
|
return GST_ROUND_UP_4 (width) * height;
|
|
if (component == 2)
|
|
return (GST_ROUND_UP_4 (width) +
|
|
(GST_ROUND_UP_16 (width) / 4)) * height;
|
|
break;
|
|
case GST_VIDEO_FORMAT_Y42B:
|
|
if (component == 0)
|
|
return 0;
|
|
if (component == 1)
|
|
return GST_ROUND_UP_4 (width) * height;
|
|
if (component == 2)
|
|
return (GST_ROUND_UP_4 (width) + (GST_ROUND_UP_8 (width) / 2)) * height;
|
|
break;
|
|
case GST_VIDEO_FORMAT_Y444:
|
|
return GST_ROUND_UP_4 (width) * height * component;
|
|
case GST_VIDEO_FORMAT_v210:
|
|
case GST_VIDEO_FORMAT_r210:
|
|
/* v210 is bit-packed, so this doesn't make sense */
|
|
return 0;
|
|
case GST_VIDEO_FORMAT_v216:
|
|
if (component == 0)
|
|
return 0;
|
|
if (component == 1)
|
|
return 2;
|
|
if (component == 2)
|
|
return 6;
|
|
break;
|
|
case GST_VIDEO_FORMAT_NV12:
|
|
if (component == 0)
|
|
return 0;
|
|
if (component == 1)
|
|
return GST_ROUND_UP_4 (width) * GST_ROUND_UP_2 (height);
|
|
if (component == 2)
|
|
return GST_ROUND_UP_4 (width) * GST_ROUND_UP_2 (height) + 1;
|
|
break;
|
|
case GST_VIDEO_FORMAT_NV21:
|
|
if (component == 0)
|
|
return 0;
|
|
if (component == 1)
|
|
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);
|
|
break;
|
|
case GST_VIDEO_FORMAT_GRAY8:
|
|
case GST_VIDEO_FORMAT_GRAY16_BE:
|
|
case GST_VIDEO_FORMAT_GRAY16_LE:
|
|
case GST_VIDEO_FORMAT_Y800:
|
|
case GST_VIDEO_FORMAT_Y16:
|
|
return 0;
|
|
case GST_VIDEO_FORMAT_UYVP:
|
|
/* UYVP is bit-packed, so this doesn't make sense */
|
|
return 0;
|
|
case GST_VIDEO_FORMAT_A420:
|
|
if (component == 0)
|
|
return 0;
|
|
if (component == 1)
|
|
return GST_ROUND_UP_4 (width) * GST_ROUND_UP_2 (height);
|
|
if (component == 2) {
|
|
return GST_ROUND_UP_4 (width) * GST_ROUND_UP_2 (height) +
|
|
GST_ROUND_UP_4 (GST_ROUND_UP_2 (width) / 2) *
|
|
(GST_ROUND_UP_2 (height) / 2);
|
|
}
|
|
if (component == 3) {
|
|
return GST_ROUND_UP_4 (width) * GST_ROUND_UP_2 (height) +
|
|
2 * GST_ROUND_UP_4 (GST_ROUND_UP_2 (width) / 2) *
|
|
(GST_ROUND_UP_2 (height) / 2);
|
|
}
|
|
break;
|
|
case GST_VIDEO_FORMAT_RGB8_PALETTED:
|
|
return 0;
|
|
case GST_VIDEO_FORMAT_YUV9:
|
|
if (component == 0)
|
|
return 0;
|
|
if (component == 1)
|
|
return GST_ROUND_UP_4 (width) * height;
|
|
if (component == 2) {
|
|
return GST_ROUND_UP_4 (width) * height +
|
|
GST_ROUND_UP_4 (GST_ROUND_UP_4 (width) / 4) *
|
|
(GST_ROUND_UP_4 (height) / 4);
|
|
}
|
|
break;
|
|
case GST_VIDEO_FORMAT_YVU9:
|
|
if (component == 0)
|
|
return 0;
|
|
if (component == 1) {
|
|
return GST_ROUND_UP_4 (width) * height +
|
|
GST_ROUND_UP_4 (GST_ROUND_UP_4 (width) / 4) *
|
|
(GST_ROUND_UP_4 (height) / 4);
|
|
}
|
|
if (component == 2)
|
|
return GST_ROUND_UP_4 (width) * height;
|
|
break;
|
|
case GST_VIDEO_FORMAT_IYU1:
|
|
if (component == 0)
|
|
return 1;
|
|
if (component == 1)
|
|
return 0;
|
|
if (component == 2)
|
|
return 4;
|
|
break;
|
|
case GST_VIDEO_FORMAT_ARGB64:
|
|
case GST_VIDEO_FORMAT_AYUV64:
|
|
if (component == 0)
|
|
return 2;
|
|
if (component == 1)
|
|
return 4;
|
|
if (component == 2)
|
|
return 6;
|
|
if (component == 3)
|
|
return 0;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
GST_WARNING ("unhandled format %d or component %d", format, component);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* gst_video_format_get_size:
|
|
* @format: a #GstVideoFormat
|
|
* @width: the width of video
|
|
* @height: the height of video
|
|
*
|
|
* Calculates the total number of bytes in the raw video format. This
|
|
* number should be used when allocating a buffer for raw video.
|
|
*
|
|
* Since: 0.10.16
|
|
*
|
|
* Returns: size (in bytes) of raw video format
|
|
*/
|
|
int
|
|
gst_video_format_get_size (GstVideoFormat format, int width, int height)
|
|
{
|
|
int size;
|
|
|
|
g_return_val_if_fail (format != GST_VIDEO_FORMAT_UNKNOWN, 0);
|
|
g_return_val_if_fail (width > 0 && height > 0, 0);
|
|
|
|
switch (format) {
|
|
case GST_VIDEO_FORMAT_I420:
|
|
case GST_VIDEO_FORMAT_YV12:
|
|
size = GST_ROUND_UP_4 (width) * GST_ROUND_UP_2 (height);
|
|
size += GST_ROUND_UP_4 (GST_ROUND_UP_2 (width) / 2) *
|
|
(GST_ROUND_UP_2 (height) / 2) * 2;
|
|
return size;
|
|
case GST_VIDEO_FORMAT_IYU1:
|
|
return GST_ROUND_UP_4 (GST_ROUND_UP_4 (width) +
|
|
GST_ROUND_UP_4 (width) / 2) * height;
|
|
case GST_VIDEO_FORMAT_YUY2:
|
|
case GST_VIDEO_FORMAT_YVYU:
|
|
case GST_VIDEO_FORMAT_UYVY:
|
|
return GST_ROUND_UP_4 (width * 2) * height;
|
|
case GST_VIDEO_FORMAT_AYUV:
|
|
case GST_VIDEO_FORMAT_RGBx:
|
|
case GST_VIDEO_FORMAT_BGRx:
|
|
case GST_VIDEO_FORMAT_xRGB:
|
|
case GST_VIDEO_FORMAT_xBGR:
|
|
case GST_VIDEO_FORMAT_RGBA:
|
|
case GST_VIDEO_FORMAT_BGRA:
|
|
case GST_VIDEO_FORMAT_ARGB:
|
|
case GST_VIDEO_FORMAT_ABGR:
|
|
case GST_VIDEO_FORMAT_r210:
|
|
return width * 4 * height;
|
|
case GST_VIDEO_FORMAT_RGB16:
|
|
case GST_VIDEO_FORMAT_BGR16:
|
|
case GST_VIDEO_FORMAT_RGB15:
|
|
case GST_VIDEO_FORMAT_BGR15:
|
|
return GST_ROUND_UP_4 (width * 2) * height;
|
|
case GST_VIDEO_FORMAT_RGB:
|
|
case GST_VIDEO_FORMAT_BGR:
|
|
case GST_VIDEO_FORMAT_v308:
|
|
return GST_ROUND_UP_4 (width * 3) * height;
|
|
case GST_VIDEO_FORMAT_Y41B:
|
|
/* simplification of ROUNDUP4(w)*h + 2*((ROUNDUP16(w)/4)*h */
|
|
return (GST_ROUND_UP_4 (width) + (GST_ROUND_UP_16 (width) / 2)) * height;
|
|
case GST_VIDEO_FORMAT_Y42B:
|
|
/* simplification of ROUNDUP4(w)*h + 2*(ROUNDUP8(w)/2)*h */
|
|
return (GST_ROUND_UP_4 (width) + GST_ROUND_UP_8 (width)) * height;
|
|
case GST_VIDEO_FORMAT_Y444:
|
|
return GST_ROUND_UP_4 (width) * height * 3;
|
|
case GST_VIDEO_FORMAT_v210:
|
|
return ((width + 47) / 48) * 128 * height;
|
|
case GST_VIDEO_FORMAT_v216:
|
|
return GST_ROUND_UP_8 (width * 4) * 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:
|
|
case GST_VIDEO_FORMAT_Y800:
|
|
case GST_VIDEO_FORMAT_RGB8_PALETTED:
|
|
return GST_ROUND_UP_4 (width) * height;
|
|
case GST_VIDEO_FORMAT_GRAY16_BE:
|
|
case GST_VIDEO_FORMAT_GRAY16_LE:
|
|
case GST_VIDEO_FORMAT_Y16:
|
|
return GST_ROUND_UP_4 (width * 2) * height;
|
|
case GST_VIDEO_FORMAT_UYVP:
|
|
return GST_ROUND_UP_4 ((width * 2 * 5 + 3) / 4) * height;
|
|
case GST_VIDEO_FORMAT_A420:
|
|
size = 2 * GST_ROUND_UP_4 (width) * GST_ROUND_UP_2 (height);
|
|
size += GST_ROUND_UP_4 (GST_ROUND_UP_2 (width) / 2) *
|
|
(GST_ROUND_UP_2 (height) / 2) * 2;
|
|
return size;
|
|
case GST_VIDEO_FORMAT_YUV9:
|
|
case GST_VIDEO_FORMAT_YVU9:
|
|
size = GST_ROUND_UP_4 (width) * height;
|
|
size += GST_ROUND_UP_4 (GST_ROUND_UP_4 (width) / 4) *
|
|
(GST_ROUND_UP_4 (height) / 4) * 2;
|
|
return size;
|
|
case GST_VIDEO_FORMAT_ARGB64:
|
|
case GST_VIDEO_FORMAT_AYUV64:
|
|
return width * 8 * height;
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gst_video_get_size_from_caps:
|
|
* @caps: a pointer to #GstCaps
|
|
* @size: a pointer to a gint that will be assigned the size (in bytes) of a video frame with the given caps
|
|
*
|
|
* Calculates the total number of bytes in the raw video format for the given
|
|
* caps. This number should be used when allocating a buffer for raw video.
|
|
*
|
|
* Since: 0.10.36
|
|
*
|
|
* Returns: %TRUE if the size could be calculated from the caps
|
|
*/
|
|
gboolean
|
|
gst_video_get_size_from_caps (const GstCaps * caps, gint * size)
|
|
{
|
|
GstVideoFormat format = 0;
|
|
gint width = 0, height = 0;
|
|
|
|
g_return_val_if_fail (gst_caps_is_fixed (caps), FALSE);
|
|
g_return_val_if_fail (size != NULL, FALSE);
|
|
|
|
if (gst_video_format_parse_caps (caps, &format, &width, &height) == FALSE) {
|
|
GST_WARNING ("Could not parse caps: %" GST_PTR_FORMAT, caps);
|
|
return FALSE;
|
|
}
|
|
|
|
*size = gst_video_format_get_size (format, width, height);
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* gst_video_format_convert:
|
|
* @format: a #GstVideoFormat
|
|
* @width: the width of video
|
|
* @height: the height of video
|
|
* @fps_n: frame rate numerator
|
|
* @fps_d: frame rate denominator
|
|
* @src_format: #GstFormat of the @src_value
|
|
* @src_value: value to convert
|
|
* @dest_format: #GstFormat of the @dest_value
|
|
* @dest_value: pointer to destination value
|
|
*
|
|
* Converts among various #GstFormat types. This function handles
|
|
* GST_FORMAT_BYTES, GST_FORMAT_TIME, and GST_FORMAT_DEFAULT. For
|
|
* raw video, GST_FORMAT_DEFAULT corresponds to video frames. This
|
|
* function can be to handle pad queries of the type GST_QUERY_CONVERT.
|
|
*
|
|
* Since: 0.10.16
|
|
*
|
|
* Returns: TRUE if the conversion was successful.
|
|
*/
|
|
gboolean
|
|
gst_video_format_convert (GstVideoFormat format, int width, int height,
|
|
int fps_n, int fps_d,
|
|
GstFormat src_format, gint64 src_value,
|
|
GstFormat dest_format, gint64 * dest_value)
|
|
{
|
|
gboolean ret = FALSE;
|
|
int size;
|
|
|
|
g_return_val_if_fail (format != GST_VIDEO_FORMAT_UNKNOWN, 0);
|
|
g_return_val_if_fail (width > 0 && height > 0, 0);
|
|
|
|
size = gst_video_format_get_size (format, width, height);
|
|
|
|
GST_DEBUG ("converting value %" G_GINT64_FORMAT " from %s to %s",
|
|
src_value, gst_format_get_name (src_format),
|
|
gst_format_get_name (dest_format));
|
|
|
|
if (src_format == dest_format) {
|
|
*dest_value = src_value;
|
|
ret = TRUE;
|
|
goto done;
|
|
}
|
|
|
|
if (src_value == -1) {
|
|
*dest_value = -1;
|
|
ret = TRUE;
|
|
goto done;
|
|
}
|
|
|
|
/* bytes to frames */
|
|
if (src_format == GST_FORMAT_BYTES && dest_format == GST_FORMAT_DEFAULT) {
|
|
if (size != 0) {
|
|
*dest_value = gst_util_uint64_scale_int (src_value, 1, size);
|
|
} else {
|
|
GST_ERROR ("blocksize is 0");
|
|
*dest_value = 0;
|
|
}
|
|
ret = TRUE;
|
|
goto done;
|
|
}
|
|
|
|
/* frames to bytes */
|
|
if (src_format == GST_FORMAT_DEFAULT && dest_format == GST_FORMAT_BYTES) {
|
|
*dest_value = gst_util_uint64_scale_int (src_value, size, 1);
|
|
ret = TRUE;
|
|
goto done;
|
|
}
|
|
|
|
/* time to frames */
|
|
if (src_format == GST_FORMAT_TIME && dest_format == GST_FORMAT_DEFAULT) {
|
|
if (fps_d != 0) {
|
|
*dest_value = gst_util_uint64_scale (src_value,
|
|
fps_n, GST_SECOND * fps_d);
|
|
} else {
|
|
GST_ERROR ("framerate denominator is 0");
|
|
*dest_value = 0;
|
|
}
|
|
ret = TRUE;
|
|
goto done;
|
|
}
|
|
|
|
/* frames to time */
|
|
if (src_format == GST_FORMAT_DEFAULT && dest_format == GST_FORMAT_TIME) {
|
|
if (fps_n != 0) {
|
|
*dest_value = gst_util_uint64_scale (src_value,
|
|
GST_SECOND * fps_d, fps_n);
|
|
} else {
|
|
GST_ERROR ("framerate numerator is 0");
|
|
*dest_value = 0;
|
|
}
|
|
ret = TRUE;
|
|
goto done;
|
|
}
|
|
|
|
/* time to bytes */
|
|
if (src_format == GST_FORMAT_TIME && dest_format == GST_FORMAT_BYTES) {
|
|
if (fps_d != 0) {
|
|
*dest_value = gst_util_uint64_scale (src_value,
|
|
fps_n * size, GST_SECOND * fps_d);
|
|
} else {
|
|
GST_ERROR ("framerate denominator is 0");
|
|
*dest_value = 0;
|
|
}
|
|
ret = TRUE;
|
|
goto done;
|
|
}
|
|
|
|
/* bytes to time */
|
|
if (src_format == GST_FORMAT_BYTES && dest_format == GST_FORMAT_TIME) {
|
|
if (fps_n != 0 && size != 0) {
|
|
*dest_value = gst_util_uint64_scale (src_value,
|
|
GST_SECOND * fps_d, fps_n * size);
|
|
} else {
|
|
GST_ERROR ("framerate denominator and/or blocksize is 0");
|
|
*dest_value = 0;
|
|
}
|
|
ret = TRUE;
|
|
}
|
|
|
|
done:
|
|
|
|
GST_DEBUG ("ret=%d result %" G_GINT64_FORMAT, ret, *dest_value);
|
|
|
|
return ret;
|
|
}
|
|
|
|
#define GST_VIDEO_EVENT_STILL_STATE_NAME "GstEventStillFrame"
|
|
|
|
/**
|
|
* gst_video_event_new_still_frame:
|
|
* @in_still: boolean value for the still-frame state of the event.
|
|
*
|
|
* Creates a new Still Frame event. If @in_still is %TRUE, then the event
|
|
* represents the start of a still frame sequence. If it is %FALSE, then
|
|
* the event ends a still frame sequence.
|
|
*
|
|
* To parse an event created by gst_video_event_new_still_frame() use
|
|
* gst_video_event_parse_still_frame().
|
|
*
|
|
* Returns: The new GstEvent
|
|
* Since: 0.10.26
|
|
*/
|
|
GstEvent *
|
|
gst_video_event_new_still_frame (gboolean in_still)
|
|
{
|
|
GstEvent *still_event;
|
|
GstStructure *s;
|
|
|
|
s = gst_structure_new (GST_VIDEO_EVENT_STILL_STATE_NAME,
|
|
"still-state", G_TYPE_BOOLEAN, in_still, NULL);
|
|
still_event = gst_event_new_custom (GST_EVENT_CUSTOM_DOWNSTREAM, s);
|
|
|
|
return still_event;
|
|
}
|
|
|
|
/**
|
|
* gst_video_event_parse_still_frame:
|
|
* @event: A #GstEvent to parse
|
|
* @in_still: A boolean to receive the still-frame status from the event, or NULL
|
|
*
|
|
* Parse a #GstEvent, identify if it is a Still Frame event, and
|
|
* return the still-frame state from the event if it is.
|
|
* If the event represents the start of a still frame, the in_still
|
|
* variable will be set to TRUE, otherwise FALSE. It is OK to pass NULL for the
|
|
* in_still variable order to just check whether the event is a valid still-frame
|
|
* event.
|
|
*
|
|
* Create a still frame event using gst_video_event_new_still_frame()
|
|
*
|
|
* Returns: %TRUE if the event is a valid still-frame event. %FALSE if not
|
|
* Since: 0.10.26
|
|
*/
|
|
gboolean
|
|
gst_video_event_parse_still_frame (GstEvent * event, gboolean * in_still)
|
|
{
|
|
const GstStructure *s;
|
|
gboolean ev_still_state;
|
|
|
|
g_return_val_if_fail (event != NULL, FALSE);
|
|
|
|
if (GST_EVENT_TYPE (event) != GST_EVENT_CUSTOM_DOWNSTREAM)
|
|
return FALSE; /* Not a still frame event */
|
|
|
|
s = gst_event_get_structure (event);
|
|
if (s == NULL
|
|
|| !gst_structure_has_name (s, GST_VIDEO_EVENT_STILL_STATE_NAME))
|
|
return FALSE; /* Not a still frame event */
|
|
if (!gst_structure_get_boolean (s, "still-state", &ev_still_state))
|
|
return FALSE; /* Not a still frame event */
|
|
if (in_still)
|
|
*in_still = ev_still_state;
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* gst_video_parse_caps_palette:
|
|
* @caps: #GstCaps to parse
|
|
*
|
|
* Returns the palette data from the caps as a #GstBuffer. For
|
|
* #GST_VIDEO_FORMAT_RGB8_PALETTED this is containing 256 #guint32
|
|
* values, each containing ARGB colors in native endianness.
|
|
*
|
|
* Returns: a #GstBuffer containing the palette data. Unref after usage.
|
|
* Since: 0.10.32
|
|
*/
|
|
GstBuffer *
|
|
gst_video_parse_caps_palette (GstCaps * caps)
|
|
{
|
|
GstStructure *s;
|
|
const GValue *p_v;
|
|
GstBuffer *p;
|
|
|
|
if (!gst_caps_is_fixed (caps))
|
|
return NULL;
|
|
|
|
s = gst_caps_get_structure (caps, 0);
|
|
|
|
p_v = gst_structure_get_value (s, "palette_data");
|
|
if (!p_v || !GST_VALUE_HOLDS_BUFFER (p_v))
|
|
return NULL;
|
|
|
|
p = gst_buffer_ref (gst_value_get_buffer (p_v));
|
|
|
|
return p;
|
|
}
|