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-rw-r--r--sys/glsink/gstvideo-common.c560
1 files changed, 560 insertions, 0 deletions
diff --git a/sys/glsink/gstvideo-common.c b/sys/glsink/gstvideo-common.c
new file mode 100644
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--- /dev/null
+++ b/sys/glsink/gstvideo-common.c
@@ -0,0 +1,560 @@
+/* gstvideo-common.c
+ * Copyright (C) 2007 David A. Schleef <ds@schleef.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gstvideo-common.h>
+
+
+gboolean
+gst_video_parse_caps (GstCaps * caps, GstVideoFormat * format, int *width,
+ int *height)
+{
+ GstStructure *structure;
+ gboolean ok = TRUE;
+
+ if (!gst_caps_is_fixed (caps))
+ return FALSE;
+
+ structure = gst_caps_get_structure (caps, 0);
+
+ if (format) {
+ if (gst_structure_has_name (structure, "video/x-raw-yuv")) {
+ guint32 fourcc;
+
+ ok &= gst_structure_get_fourcc (structure, "format", &fourcc);
+
+ *format = gst_video_fourcc_to_format (fourcc);
+ if (*format == GST_VIDEO_FORMAT_UNKNOWN) {
+ ok = FALSE;
+ }
+ } else if (gst_structure_has_name (structure, "video/x-raw-rgb")) {
+ int depth;
+ int bpp;
+ int endianness;
+ int red_mask;
+ int green_mask;
+ int blue_mask;
+
+ ok &= gst_structure_get_int (structure, "depth", &depth);
+ ok &= gst_structure_get_int (structure, "bpp", &bpp);
+ ok &= gst_structure_get_int (structure, "endianness", &endianness);
+ ok &= gst_structure_get_int (structure, "red_mask", &red_mask);
+ ok &= gst_structure_get_int (structure, "green_mask", &green_mask);
+ ok &= gst_structure_get_int (structure, "blue_mask", &blue_mask);
+
+ if (depth != 24 || bpp != 32 || endianness != G_BIG_ENDIAN) {
+ ok = FALSE;
+ } else {
+ *format = gst_video_rgb32_masks_to_format (red_mask, green_mask,
+ blue_mask);
+ if (*format == GST_VIDEO_FORMAT_UNKNOWN) {
+ ok = FALSE;
+ }
+ }
+ } else {
+ ok = FALSE;
+ }
+ }
+
+ if (width) {
+ ok &= gst_structure_get_int (structure, "width", width);
+ }
+
+ if (height) {
+ ok &= gst_structure_get_int (structure, "height", height);
+ }
+
+ return ok;
+}
+
+gboolean
+gst_video_parse_caps_framerate (GstCaps * caps, int *fps_n, int *fps_d)
+{
+ GstStructure *structure;
+
+ if (!gst_caps_is_fixed (caps))
+ return FALSE;
+
+ structure = gst_caps_get_structure (caps, 0);
+
+ return gst_structure_get_fraction (structure, "framerate", fps_n, fps_d);
+}
+
+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;
+}
+
+GstCaps *
+gst_video_create_caps (GstVideoFormat format, int width, int height,
+ int framerate_n, int framerate_d, int par_n, int par_d)
+{
+ 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),
+ "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);
+ }
+ if (gst_video_format_is_rgb (format)) {
+ int red_mask;
+ int blue_mask;
+ int green_mask;
+
+ red_mask =
+ 0xff000000U >> gst_video_format_get_component_offset (format, 0, width,
+ height);
+ green_mask =
+ 0xff000000U >> gst_video_format_get_component_offset (format, 1, width,
+ height);
+ blue_mask =
+ 0xff000000U >> gst_video_format_get_component_offset (format, 2, width,
+ height);
+
+ return gst_caps_new_simple ("video/x-raw-rgb",
+ "bpp", G_TYPE_INT, 32,
+ "depth", G_TYPE_INT, 24,
+ "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,
+ "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 NULL;
+}
+
+GstVideoFormat
+gst_video_fourcc_to_format (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 ('U', 'Y', 'V', 'Y'):
+ return GST_VIDEO_FORMAT_UYVY;
+ case GST_MAKE_FOURCC ('A', 'Y', 'U', 'V'):
+ return GST_VIDEO_FORMAT_AYUV;
+ default:
+ return GST_VIDEO_FORMAT_UNKNOWN;
+ }
+}
+
+guint32
+gst_video_format_to_fourcc (GstVideoFormat format)
+{
+ 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_UYVY:
+ return GST_MAKE_FOURCC ('U', 'Y', 'V', 'Y');
+ case GST_VIDEO_FORMAT_AYUV:
+ return GST_MAKE_FOURCC ('A', 'Y', 'U', 'V');
+ default:
+ return 0;
+ }
+}
+
+GstVideoFormat
+gst_video_rgb32_masks_to_format (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;
+ }
+
+ return GST_VIDEO_FORMAT_UNKNOWN;
+}
+
+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_UYVY:
+ case GST_VIDEO_FORMAT_AYUV:
+ return FALSE;
+ case GST_VIDEO_FORMAT_RGBx:
+ case GST_VIDEO_FORMAT_BGRx:
+ return TRUE;
+ default:
+ return FALSE;
+ }
+}
+
+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_UYVY:
+ case GST_VIDEO_FORMAT_AYUV:
+ return TRUE;
+ case GST_VIDEO_FORMAT_RGBx:
+ case GST_VIDEO_FORMAT_BGRx:
+ return FALSE;
+ default:
+ return FALSE;
+ }
+}
+
+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_UYVY:
+ return FALSE;
+ case GST_VIDEO_FORMAT_AYUV:
+ return TRUE;
+ case GST_VIDEO_FORMAT_RGBx:
+ case GST_VIDEO_FORMAT_BGRx:
+ return FALSE;
+ default:
+ return FALSE;
+ }
+}
+
+int
+gst_video_format_get_row_stride (GstVideoFormat format, int component,
+ int width)
+{
+ 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_UYVY:
+ return GST_ROUND_UP_4 (width * 2);
+ case GST_VIDEO_FORMAT_AYUV:
+ case GST_VIDEO_FORMAT_RGBx:
+ case GST_VIDEO_FORMAT_BGRx:
+ return width * 4;
+ default:
+ return 0;
+ }
+}
+
+int
+gst_video_format_get_pixel_stride (GstVideoFormat format, int component)
+{
+ switch (format) {
+ case GST_VIDEO_FORMAT_I420:
+ case GST_VIDEO_FORMAT_YV12:
+ return 1;
+ case GST_VIDEO_FORMAT_YUY2:
+ case GST_VIDEO_FORMAT_UYVY:
+ if (component == 0) {
+ return 2;
+ } else {
+ return 4;
+ }
+ case GST_VIDEO_FORMAT_AYUV:
+ case GST_VIDEO_FORMAT_RGBx:
+ case GST_VIDEO_FORMAT_BGRx:
+ return 4;
+ default:
+ return 0;
+ }
+}
+
+int
+gst_video_format_get_component_width (GstVideoFormat format, int component,
+ int width)
+{
+ switch (format) {
+ case GST_VIDEO_FORMAT_I420:
+ case GST_VIDEO_FORMAT_YV12:
+ case GST_VIDEO_FORMAT_YUY2:
+ case GST_VIDEO_FORMAT_UYVY:
+ if (component == 0) {
+ return width;
+ } else {
+ return GST_ROUND_UP_2 (width) / 2;
+ }
+ case GST_VIDEO_FORMAT_AYUV:
+ case GST_VIDEO_FORMAT_RGBx:
+ case GST_VIDEO_FORMAT_BGRx:
+ return width;
+ default:
+ return 0;
+ }
+}
+
+int
+gst_video_format_get_component_height (GstVideoFormat format, int component,
+ int height)
+{
+ switch (format) {
+ case GST_VIDEO_FORMAT_I420:
+ case GST_VIDEO_FORMAT_YV12:
+ if (component == 0) {
+ return height;
+ } else {
+ return GST_ROUND_UP_2 (height) / 2;
+ }
+ case GST_VIDEO_FORMAT_YUY2:
+ case GST_VIDEO_FORMAT_UYVY:
+ case GST_VIDEO_FORMAT_AYUV:
+ case GST_VIDEO_FORMAT_RGBx:
+ case GST_VIDEO_FORMAT_BGRx:
+ return height;
+ default:
+ return 0;
+ }
+}
+
+int
+gst_video_format_get_component_offset (GstVideoFormat format, int component,
+ int width, int height)
+{
+ switch (format) {
+ case GST_VIDEO_FORMAT_I420:
+ case GST_VIDEO_FORMAT_YV12:
+ if (component == 0) {
+ return 0;
+ } else {
+ int offset;
+
+ offset = GST_ROUND_UP_4 (width) * GST_ROUND_UP_2 (height);
+ if (component == 2) {
+ offset += GST_ROUND_UP_4 (GST_ROUND_UP_2 (width) / 2) *
+ (GST_ROUND_UP_2 (height) / 2);
+ }
+ return offset;
+ }
+ case GST_VIDEO_FORMAT_YUY2:
+ if (component == 0)
+ return 0;
+ if (component == 1)
+ return 1;
+ if (component == 2)
+ return 3;
+ return 0;
+ case GST_VIDEO_FORMAT_UYVY:
+ if (component == 0)
+ return 1;
+ if (component == 1)
+ return 0;
+ if (component == 2)
+ return 2;
+ return 0;
+ 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;
+ return 0;
+ case GST_VIDEO_FORMAT_RGBx:
+ if (component == 0)
+ return 0;
+ if (component == 1)
+ return 1;
+ if (component == 2)
+ return 2;
+ if (component == 3)
+ return 3;
+ return 0;
+ case GST_VIDEO_FORMAT_BGRx:
+ if (component == 0)
+ return 2;
+ if (component == 1)
+ return 1;
+ if (component == 2)
+ return 0;
+ if (component == 3)
+ return 3;
+ return 0;
+ default:
+ return 0;
+ }
+}
+
+int
+gst_video_format_get_size (GstVideoFormat format, int width, int height)
+{
+ int size;
+
+ 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_YUY2:
+ 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:
+ return width * 4 * height;
+ default:
+ return 0;
+ }
+}
+
+
+gboolean
+gst_video_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;
+
+ 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;
+}
generated by cgit v1.2.1 (git 2.18.0) at 2025-01-15 16:04:33 +0000