| /* GStreamer |
| * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu> |
| * Copyright (C) <2003> David Schleef <ds@schleef.org> |
| * Copyright (C) <2010> Sebastian Dröge <sebastian.droege@collabora.co.uk> |
| * Copyright (C) <2011> Youness Alaoui <youness.alaoui@collabora.co.uk> |
| * |
| * 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. |
| */ |
| |
| /* |
| * This file was (probably) generated from gstvideoflip.c, |
| * gstvideoflip.c,v 1.7 2003/11/08 02:48:59 dschleef Exp |
| */ |
| /** |
| * SECTION:element-videoflip |
| * |
| * Flips and rotates video. |
| * |
| * <refsect2> |
| * <title>Example launch line</title> |
| * |[ |
| * gst-launch videotestsrc ! videoflip method=clockwise ! ffmpegcolorspace ! ximagesink |
| * ]| This pipeline flips the test image 90 degrees clockwise. |
| * </refsect2> |
| * |
| * Last reviewed on 2010-04-18 (0.10.22) |
| */ |
| |
| |
| #ifdef HAVE_CONFIG_H |
| #include "config.h" |
| #endif |
| |
| #include "gstvideoflip.h" |
| |
| #include <string.h> |
| #include <gst/gst.h> |
| #include <gst/controller/gstcontroller.h> |
| #include <gst/video/video.h> |
| |
| /* GstVideoFlip properties */ |
| enum |
| { |
| PROP_0, |
| PROP_METHOD |
| /* FILL ME */ |
| }; |
| |
| #define PROP_METHOD_DEFAULT GST_VIDEO_FLIP_METHOD_IDENTITY |
| |
| GST_DEBUG_CATEGORY_STATIC (video_flip_debug); |
| #define GST_CAT_DEFAULT video_flip_debug |
| |
| static GstStaticPadTemplate gst_video_flip_src_template = |
| GST_STATIC_PAD_TEMPLATE ("src", |
| GST_PAD_SRC, |
| GST_PAD_ALWAYS, |
| GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("AYUV") ";" |
| GST_VIDEO_CAPS_ARGB ";" GST_VIDEO_CAPS_BGRA ";" |
| GST_VIDEO_CAPS_ABGR ";" GST_VIDEO_CAPS_RGBA ";" |
| GST_VIDEO_CAPS_YUV ("Y444") ";" |
| GST_VIDEO_CAPS_xRGB ";" GST_VIDEO_CAPS_RGBx ";" |
| GST_VIDEO_CAPS_xBGR ";" GST_VIDEO_CAPS_BGRx ";" |
| GST_VIDEO_CAPS_RGB ";" GST_VIDEO_CAPS_BGR ";" |
| GST_VIDEO_CAPS_YUV ("I420") ";" |
| GST_VIDEO_CAPS_YUV ("YV12") ";" GST_VIDEO_CAPS_YUV ("IYUV") ";" |
| GST_VIDEO_CAPS_YUV ("YUY2") ";" GST_VIDEO_CAPS_YUV ("UYVY") ";" |
| GST_VIDEO_CAPS_YUV ("YVYU") |
| |
| ) |
| ); |
| |
| static GstStaticPadTemplate gst_video_flip_sink_template = |
| GST_STATIC_PAD_TEMPLATE ("sink", |
| GST_PAD_SINK, |
| GST_PAD_ALWAYS, |
| GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("AYUV") ";" |
| GST_VIDEO_CAPS_ARGB ";" GST_VIDEO_CAPS_BGRA ";" |
| GST_VIDEO_CAPS_ABGR ";" GST_VIDEO_CAPS_RGBA ";" |
| GST_VIDEO_CAPS_YUV ("Y444") ";" |
| GST_VIDEO_CAPS_xRGB ";" GST_VIDEO_CAPS_RGBx ";" |
| GST_VIDEO_CAPS_xBGR ";" GST_VIDEO_CAPS_BGRx ";" |
| GST_VIDEO_CAPS_RGB ";" GST_VIDEO_CAPS_BGR ";" |
| GST_VIDEO_CAPS_YUV ("I420") ";" |
| GST_VIDEO_CAPS_YUV ("YV12") ";" GST_VIDEO_CAPS_YUV ("IYUV") ";" |
| GST_VIDEO_CAPS_YUV ("YUY2") ";" GST_VIDEO_CAPS_YUV ("UYVY") ";" |
| GST_VIDEO_CAPS_YUV ("YVYU") |
| ) |
| ); |
| |
| #define GST_TYPE_VIDEO_FLIP_METHOD (gst_video_flip_method_get_type()) |
| |
| static const GEnumValue video_flip_methods[] = { |
| {GST_VIDEO_FLIP_METHOD_IDENTITY, "Identity (no rotation)", "none"}, |
| {GST_VIDEO_FLIP_METHOD_90R, "Rotate clockwise 90 degrees", "clockwise"}, |
| {GST_VIDEO_FLIP_METHOD_180, "Rotate 180 degrees", "rotate-180"}, |
| {GST_VIDEO_FLIP_METHOD_90L, "Rotate counter-clockwise 90 degrees", |
| "counterclockwise"}, |
| {GST_VIDEO_FLIP_METHOD_HORIZ, "Flip horizontally", "horizontal-flip"}, |
| {GST_VIDEO_FLIP_METHOD_VERT, "Flip vertically", "vertical-flip"}, |
| {GST_VIDEO_FLIP_METHOD_TRANS, |
| "Flip across upper left/lower right diagonal", "upper-left-diagonal"}, |
| {GST_VIDEO_FLIP_METHOD_OTHER, |
| "Flip across upper right/lower left diagonal", "upper-right-diagonal"}, |
| {0, NULL, NULL}, |
| }; |
| |
| static GType |
| gst_video_flip_method_get_type (void) |
| { |
| static GType video_flip_method_type = 0; |
| |
| if (!video_flip_method_type) { |
| video_flip_method_type = g_enum_register_static ("GstVideoFlipMethod", |
| video_flip_methods); |
| } |
| return video_flip_method_type; |
| } |
| |
| GST_BOILERPLATE (GstVideoFlip, gst_video_flip, GstVideoFilter, |
| GST_TYPE_VIDEO_FILTER); |
| |
| static GstCaps * |
| gst_video_flip_transform_caps (GstBaseTransform * trans, |
| GstPadDirection direction, GstCaps * caps) |
| { |
| GstVideoFlip *videoflip = GST_VIDEO_FLIP (trans); |
| GstCaps *ret; |
| gint width, height, i; |
| |
| ret = gst_caps_copy (caps); |
| |
| for (i = 0; i < gst_caps_get_size (ret); i++) { |
| GstStructure *structure = gst_caps_get_structure (ret, i); |
| gint par_n, par_d; |
| |
| if (gst_structure_get_int (structure, "width", &width) && |
| gst_structure_get_int (structure, "height", &height)) { |
| |
| switch (videoflip->method) { |
| case GST_VIDEO_FLIP_METHOD_90R: |
| case GST_VIDEO_FLIP_METHOD_90L: |
| case GST_VIDEO_FLIP_METHOD_TRANS: |
| case GST_VIDEO_FLIP_METHOD_OTHER: |
| gst_structure_set (structure, "width", G_TYPE_INT, height, |
| "height", G_TYPE_INT, width, NULL); |
| if (gst_structure_get_fraction (structure, "pixel-aspect-ratio", |
| &par_n, &par_d)) { |
| if (par_n != 1 || par_d != 1) { |
| GValue val = { 0, }; |
| |
| g_value_init (&val, GST_TYPE_FRACTION); |
| gst_value_set_fraction (&val, par_d, par_n); |
| gst_structure_set_value (structure, "pixel-aspect-ratio", &val); |
| g_value_unset (&val); |
| } |
| } |
| break; |
| case GST_VIDEO_FLIP_METHOD_IDENTITY: |
| case GST_VIDEO_FLIP_METHOD_180: |
| case GST_VIDEO_FLIP_METHOD_HORIZ: |
| case GST_VIDEO_FLIP_METHOD_VERT: |
| gst_structure_set (structure, "width", G_TYPE_INT, width, |
| "height", G_TYPE_INT, height, NULL); |
| break; |
| default: |
| g_assert_not_reached (); |
| break; |
| } |
| } |
| } |
| |
| GST_DEBUG_OBJECT (videoflip, "transformed %" GST_PTR_FORMAT " to %" |
| GST_PTR_FORMAT, caps, ret); |
| |
| return ret; |
| } |
| |
| static gboolean |
| gst_video_flip_get_unit_size (GstBaseTransform * btrans, GstCaps * caps, |
| guint * size) |
| { |
| GstVideoFormat format; |
| gint width, height; |
| |
| if (!gst_video_format_parse_caps (caps, &format, &width, &height)) |
| return FALSE; |
| |
| *size = gst_video_format_get_size (format, width, height); |
| |
| GST_DEBUG_OBJECT (btrans, "our frame size is %d bytes (%dx%d)", *size, |
| width, height); |
| |
| return TRUE; |
| } |
| |
| static void |
| gst_video_flip_planar_yuv (GstVideoFlip * videoflip, guint8 * dest, |
| const guint8 * src) |
| { |
| gint x, y; |
| guint8 const *s; |
| guint8 *d; |
| GstVideoFormat format = videoflip->format; |
| gint sw = videoflip->from_width; |
| gint sh = videoflip->from_height; |
| gint dw = videoflip->to_width; |
| gint dh = videoflip->to_height; |
| gint src_y_stride, src_u_stride, src_v_stride; |
| gint src_y_offset, src_u_offset, src_v_offset; |
| gint src_y_height, src_u_height, src_v_height; |
| gint src_y_width, src_u_width, src_v_width; |
| gint dest_y_stride, dest_u_stride, dest_v_stride; |
| gint dest_y_offset, dest_u_offset, dest_v_offset; |
| gint dest_y_height, dest_u_height, dest_v_height; |
| gint dest_y_width, dest_u_width, dest_v_width; |
| |
| src_y_stride = gst_video_format_get_row_stride (format, 0, sw); |
| src_u_stride = gst_video_format_get_row_stride (format, 1, sw); |
| src_v_stride = gst_video_format_get_row_stride (format, 2, sw); |
| |
| dest_y_stride = gst_video_format_get_row_stride (format, 0, dw); |
| dest_u_stride = gst_video_format_get_row_stride (format, 1, dw); |
| dest_v_stride = gst_video_format_get_row_stride (format, 2, dw); |
| |
| src_y_offset = gst_video_format_get_component_offset (format, 0, sw, sh); |
| src_u_offset = gst_video_format_get_component_offset (format, 1, sw, sh); |
| src_v_offset = gst_video_format_get_component_offset (format, 2, sw, sh); |
| |
| dest_y_offset = gst_video_format_get_component_offset (format, 0, dw, dh); |
| dest_u_offset = gst_video_format_get_component_offset (format, 1, dw, dh); |
| dest_v_offset = gst_video_format_get_component_offset (format, 2, dw, dh); |
| |
| src_y_width = gst_video_format_get_component_width (format, 0, sw); |
| src_u_width = gst_video_format_get_component_width (format, 1, sw); |
| src_v_width = gst_video_format_get_component_width (format, 2, sw); |
| |
| dest_y_width = gst_video_format_get_component_width (format, 0, dw); |
| dest_u_width = gst_video_format_get_component_width (format, 1, dw); |
| dest_v_width = gst_video_format_get_component_width (format, 2, dw); |
| |
| src_y_height = gst_video_format_get_component_height (format, 0, sh); |
| src_u_height = gst_video_format_get_component_height (format, 1, sh); |
| src_v_height = gst_video_format_get_component_height (format, 2, sh); |
| |
| dest_y_height = gst_video_format_get_component_height (format, 0, dh); |
| dest_u_height = gst_video_format_get_component_height (format, 1, dh); |
| dest_v_height = gst_video_format_get_component_height (format, 2, dh); |
| |
| switch (videoflip->method) { |
| case GST_VIDEO_FLIP_METHOD_90R: |
| /* Flip Y */ |
| s = src + src_y_offset; |
| d = dest + dest_y_offset; |
| for (y = 0; y < dest_y_height; y++) { |
| for (x = 0; x < dest_y_width; x++) { |
| d[y * dest_y_stride + x] = |
| s[(src_y_height - 1 - x) * src_y_stride + y]; |
| } |
| } |
| /* Flip U */ |
| s = src + src_u_offset; |
| d = dest + dest_u_offset; |
| for (y = 0; y < dest_u_height; y++) { |
| for (x = 0; x < dest_u_width; x++) { |
| d[y * dest_u_stride + x] = |
| s[(src_u_height - 1 - x) * src_u_stride + y]; |
| } |
| } |
| /* Flip V */ |
| s = src + src_v_offset; |
| d = dest + dest_v_offset; |
| for (y = 0; y < dest_v_height; y++) { |
| for (x = 0; x < dest_v_width; x++) { |
| d[y * dest_v_stride + x] = |
| s[(src_v_height - 1 - x) * src_v_stride + y]; |
| } |
| } |
| break; |
| case GST_VIDEO_FLIP_METHOD_90L: |
| /* Flip Y */ |
| s = src + src_y_offset; |
| d = dest + dest_y_offset; |
| for (y = 0; y < dest_y_height; y++) { |
| for (x = 0; x < dest_y_width; x++) { |
| d[y * dest_y_stride + x] = |
| s[x * src_y_stride + (src_y_width - 1 - y)]; |
| } |
| } |
| /* Flip U */ |
| s = src + src_u_offset; |
| d = dest + dest_u_offset; |
| for (y = 0; y < dest_u_height; y++) { |
| for (x = 0; x < dest_u_width; x++) { |
| d[y * dest_u_stride + x] = |
| s[x * src_u_stride + (src_u_width - 1 - y)]; |
| } |
| } |
| /* Flip V */ |
| s = src + src_v_offset; |
| d = dest + dest_v_offset; |
| for (y = 0; y < dest_v_height; y++) { |
| for (x = 0; x < dest_v_width; x++) { |
| d[y * dest_v_stride + x] = |
| s[x * src_v_stride + (src_v_width - 1 - y)]; |
| } |
| } |
| break; |
| case GST_VIDEO_FLIP_METHOD_180: |
| /* Flip Y */ |
| s = src + src_y_offset; |
| d = dest + dest_y_offset; |
| for (y = 0; y < dest_y_height; y++) { |
| for (x = 0; x < dest_y_width; x++) { |
| d[y * dest_y_stride + x] = |
| s[(src_y_height - 1 - y) * src_y_stride + (src_y_width - 1 - x)]; |
| } |
| } |
| /* Flip U */ |
| s = src + src_u_offset; |
| d = dest + dest_u_offset; |
| for (y = 0; y < dest_u_height; y++) { |
| for (x = 0; x < dest_u_width; x++) { |
| d[y * dest_u_stride + x] = |
| s[(src_u_height - 1 - y) * src_u_stride + (src_u_width - 1 - x)]; |
| } |
| } |
| /* Flip V */ |
| s = src + src_v_offset; |
| d = dest + dest_v_offset; |
| for (y = 0; y < dest_v_height; y++) { |
| for (x = 0; x < dest_v_width; x++) { |
| d[y * dest_v_stride + x] = |
| s[(src_v_height - 1 - y) * src_v_stride + (src_v_width - 1 - x)]; |
| } |
| } |
| break; |
| case GST_VIDEO_FLIP_METHOD_HORIZ: |
| /* Flip Y */ |
| s = src + src_y_offset; |
| d = dest + dest_y_offset; |
| for (y = 0; y < dest_y_height; y++) { |
| for (x = 0; x < dest_y_width; x++) { |
| d[y * dest_y_stride + x] = |
| s[y * src_y_stride + (src_y_width - 1 - x)]; |
| } |
| } |
| /* Flip U */ |
| s = src + src_u_offset; |
| d = dest + dest_u_offset; |
| for (y = 0; y < dest_u_height; y++) { |
| for (x = 0; x < dest_u_width; x++) { |
| d[y * dest_u_stride + x] = |
| s[y * src_u_stride + (src_u_width - 1 - x)]; |
| } |
| } |
| /* Flip V */ |
| s = src + src_v_offset; |
| d = dest + dest_v_offset; |
| for (y = 0; y < dest_v_height; y++) { |
| for (x = 0; x < dest_v_width; x++) { |
| d[y * dest_v_stride + x] = |
| s[y * src_v_stride + (src_v_width - 1 - x)]; |
| } |
| } |
| break; |
| case GST_VIDEO_FLIP_METHOD_VERT: |
| /* Flip Y */ |
| s = src + src_y_offset; |
| d = dest + dest_y_offset; |
| for (y = 0; y < dest_y_height; y++) { |
| for (x = 0; x < dest_y_width; x++) { |
| d[y * dest_y_stride + x] = |
| s[(src_y_height - 1 - y) * src_y_stride + x]; |
| } |
| } |
| /* Flip U */ |
| s = src + src_u_offset; |
| d = dest + dest_u_offset; |
| for (y = 0; y < dest_u_height; y++) { |
| for (x = 0; x < dest_u_width; x++) { |
| d[y * dest_u_stride + x] = |
| s[(src_u_height - 1 - y) * src_u_stride + x]; |
| } |
| } |
| /* Flip V */ |
| s = src + src_v_offset; |
| d = dest + dest_v_offset; |
| for (y = 0; y < dest_v_height; y++) { |
| for (x = 0; x < dest_v_width; x++) { |
| d[y * dest_v_stride + x] = |
| s[(src_v_height - 1 - y) * src_v_stride + x]; |
| } |
| } |
| break; |
| case GST_VIDEO_FLIP_METHOD_TRANS: |
| /* Flip Y */ |
| s = src + src_y_offset; |
| d = dest + dest_y_offset; |
| for (y = 0; y < dest_y_height; y++) { |
| for (x = 0; x < dest_y_width; x++) { |
| d[y * dest_y_stride + x] = s[x * src_y_stride + y]; |
| } |
| } |
| /* Flip U */ |
| s = src + src_u_offset; |
| d = dest + dest_u_offset; |
| for (y = 0; y < dest_u_height; y++) { |
| for (x = 0; x < dest_u_width; x++) { |
| d[y * dest_u_stride + x] = s[x * src_u_stride + y]; |
| } |
| } |
| /* Flip V */ |
| s = src + src_v_offset; |
| d = dest + dest_v_offset; |
| for (y = 0; y < dest_u_height; y++) { |
| for (x = 0; x < dest_u_width; x++) { |
| d[y * dest_v_stride + x] = s[x * src_v_stride + y]; |
| } |
| } |
| break; |
| case GST_VIDEO_FLIP_METHOD_OTHER: |
| /* Flip Y */ |
| s = src + src_y_offset; |
| d = dest + dest_y_offset; |
| for (y = 0; y < dest_y_height; y++) { |
| for (x = 0; x < dest_y_width; x++) { |
| d[y * dest_y_stride + x] = |
| s[(src_y_height - 1 - x) * src_y_stride + (src_y_width - 1 - y)]; |
| } |
| } |
| /* Flip U */ |
| s = src + src_u_offset; |
| d = dest + dest_u_offset; |
| for (y = 0; y < dest_u_height; y++) { |
| for (x = 0; x < dest_u_width; x++) { |
| d[y * dest_u_stride + x] = |
| s[(src_u_height - 1 - x) * src_u_stride + (src_u_width - 1 - y)]; |
| } |
| } |
| /* Flip V */ |
| s = src + src_v_offset; |
| d = dest + dest_v_offset; |
| for (y = 0; y < dest_v_height; y++) { |
| for (x = 0; x < dest_v_width; x++) { |
| d[y * dest_v_stride + x] = |
| s[(src_v_height - 1 - x) * src_v_stride + (src_v_width - 1 - y)]; |
| } |
| } |
| break; |
| case GST_VIDEO_FLIP_METHOD_IDENTITY: |
| g_assert_not_reached (); |
| break; |
| default: |
| g_assert_not_reached (); |
| break; |
| } |
| } |
| |
| static void |
| gst_video_flip_packed_simple (GstVideoFlip * videoflip, guint8 * dest, |
| const guint8 * src) |
| { |
| gint x, y, z; |
| guint8 const *s = src; |
| guint8 *d = dest; |
| GstVideoFormat format = videoflip->format; |
| gint sw = videoflip->from_width; |
| gint sh = videoflip->from_height; |
| gint dw = videoflip->to_width; |
| gint dh = videoflip->to_height; |
| gint src_stride, dest_stride; |
| gint bpp; |
| |
| src_stride = gst_video_format_get_row_stride (format, 0, sw); |
| dest_stride = gst_video_format_get_row_stride (format, 0, dw); |
| /* This is only true for non-subsampled formats! */ |
| bpp = gst_video_format_get_pixel_stride (format, 0); |
| |
| switch (videoflip->method) { |
| case GST_VIDEO_FLIP_METHOD_90R: |
| for (y = 0; y < dh; y++) { |
| for (x = 0; x < dw; x++) { |
| for (z = 0; z < bpp; z++) { |
| d[y * dest_stride + x * bpp + z] = |
| s[(sh - 1 - x) * src_stride + y * bpp + z]; |
| } |
| } |
| } |
| break; |
| case GST_VIDEO_FLIP_METHOD_90L: |
| for (y = 0; y < dh; y++) { |
| for (x = 0; x < dw; x++) { |
| for (z = 0; z < bpp; z++) { |
| d[y * dest_stride + x * bpp + z] = |
| s[x * src_stride + (sw - 1 - y) * bpp + z]; |
| } |
| } |
| } |
| break; |
| case GST_VIDEO_FLIP_METHOD_180: |
| for (y = 0; y < dh; y++) { |
| for (x = 0; x < dw; x++) { |
| for (z = 0; z < bpp; z++) { |
| d[y * dest_stride + x * bpp + z] = |
| s[(sh - 1 - y) * src_stride + (sw - 1 - x) * bpp + z]; |
| } |
| } |
| } |
| break; |
| case GST_VIDEO_FLIP_METHOD_HORIZ: |
| for (y = 0; y < dh; y++) { |
| for (x = 0; x < dw; x++) { |
| for (z = 0; z < bpp; z++) { |
| d[y * dest_stride + x * bpp + z] = |
| s[y * src_stride + (sw - 1 - x) * bpp + z]; |
| } |
| } |
| } |
| break; |
| case GST_VIDEO_FLIP_METHOD_VERT: |
| for (y = 0; y < dh; y++) { |
| for (x = 0; x < dw; x++) { |
| for (z = 0; z < bpp; z++) { |
| d[y * dest_stride + x * bpp + z] = |
| s[(sh - 1 - y) * src_stride + x * bpp + z]; |
| } |
| } |
| } |
| break; |
| case GST_VIDEO_FLIP_METHOD_TRANS: |
| for (y = 0; y < dh; y++) { |
| for (x = 0; x < dw; x++) { |
| for (z = 0; z < bpp; z++) { |
| d[y * dest_stride + x * bpp + z] = s[x * src_stride + y * bpp + z]; |
| } |
| } |
| } |
| break; |
| case GST_VIDEO_FLIP_METHOD_OTHER: |
| for (y = 0; y < dh; y++) { |
| for (x = 0; x < dw; x++) { |
| for (z = 0; z < bpp; z++) { |
| d[y * dest_stride + x * bpp + z] = |
| s[(sh - 1 - x) * src_stride + (sw - 1 - y) * bpp + z]; |
| } |
| } |
| } |
| break; |
| case GST_VIDEO_FLIP_METHOD_IDENTITY: |
| g_assert_not_reached (); |
| break; |
| default: |
| g_assert_not_reached (); |
| break; |
| } |
| } |
| |
| |
| static void |
| gst_video_flip_y422 (GstVideoFlip * videoflip, guint8 * dest, |
| const guint8 * src) |
| { |
| gint x, y; |
| guint8 const *s = src; |
| guint8 *d = dest; |
| GstVideoFormat format = videoflip->format; |
| gint sw = videoflip->from_width; |
| gint sh = videoflip->from_height; |
| gint dw = videoflip->to_width; |
| gint dh = videoflip->to_height; |
| gint src_stride, dest_stride; |
| gint bpp; |
| gint y_offset; |
| gint u_offset; |
| gint v_offset; |
| gint y_stride; |
| gint u_stride; |
| gint v_stride; |
| |
| src_stride = gst_video_format_get_row_stride (format, 0, sw); |
| dest_stride = gst_video_format_get_row_stride (format, 0, dw); |
| |
| y_offset = gst_video_format_get_component_offset (format, 0, sw, sh); |
| u_offset = gst_video_format_get_component_offset (format, 1, sw, sh); |
| v_offset = gst_video_format_get_component_offset (format, 2, sw, sh); |
| y_stride = gst_video_format_get_pixel_stride (format, 0); |
| u_stride = gst_video_format_get_pixel_stride (format, 1); |
| v_stride = gst_video_format_get_pixel_stride (format, 2); |
| bpp = y_stride; |
| |
| switch (videoflip->method) { |
| case GST_VIDEO_FLIP_METHOD_90R: |
| for (y = 0; y < dh; y++) { |
| for (x = 0; x < dw; x += 2) { |
| guint8 u; |
| guint8 v; |
| /* u/v must be calculated using the offset of the even column */ |
| gint even_y = (y & ~1); |
| |
| u = s[(sh - 1 - x) * src_stride + even_y * bpp + u_offset]; |
| if (x + 1 < dw) |
| u = (s[(sh - 1 - (x + 1)) * src_stride + even_y * bpp + u_offset] |
| + u) >> 1; |
| v = s[(sh - 1 - x) * src_stride + even_y * bpp + v_offset]; |
| if (x + 1 < dw) |
| v = (s[(sh - 1 - (x + 1)) * src_stride + even_y * bpp + v_offset] |
| + v) >> 1; |
| |
| d[y * dest_stride + x * bpp + u_offset] = u; |
| d[y * dest_stride + x * bpp + v_offset] = v; |
| d[y * dest_stride + x * bpp + y_offset] = |
| s[(sh - 1 - x) * src_stride + y * bpp + y_offset]; |
| if (x + 1 < dw) |
| d[y * dest_stride + (x + 1) * bpp + y_offset] = |
| s[(sh - 1 - (x + 1)) * src_stride + y * bpp + y_offset]; |
| } |
| } |
| break; |
| case GST_VIDEO_FLIP_METHOD_90L: |
| for (y = 0; y < dh; y++) { |
| for (x = 0; x < dw; x += 2) { |
| guint8 u; |
| guint8 v; |
| /* u/v must be calculated using the offset of the even column */ |
| gint even_y = ((sw - 1 - y) & ~1); |
| |
| u = s[x * src_stride + even_y * bpp + u_offset]; |
| if (x + 1 < dw) |
| u = (s[(x + 1) * src_stride + even_y * bpp + u_offset] + u) >> 1; |
| v = s[x * src_stride + even_y * bpp + v_offset]; |
| if (x + 1 < dw) |
| v = (s[(x + 1) * src_stride + even_y * bpp + v_offset] + v) >> 1; |
| |
| d[y * dest_stride + x * bpp + u_offset] = u; |
| d[y * dest_stride + x * bpp + v_offset] = v; |
| d[y * dest_stride + x * bpp + y_offset] = |
| s[x * src_stride + (sw - 1 - y) * bpp + y_offset]; |
| if (x + 1 < dw) |
| d[y * dest_stride + (x + 1) * bpp + y_offset] = |
| s[(x + 1) * src_stride + (sw - 1 - y) * bpp + y_offset]; |
| } |
| } |
| break; |
| case GST_VIDEO_FLIP_METHOD_180: |
| for (y = 0; y < dh; y++) { |
| for (x = 0; x < dw; x += 2) { |
| guint8 u; |
| guint8 v; |
| /* u/v must be calculated using the offset of the even column */ |
| gint even_x = ((sw - 1 - x) & ~1); |
| |
| u = (s[(sh - 1 - y) * src_stride + even_x * bpp + u_offset] + |
| s[(sh - 1 - y) * src_stride + even_x * bpp + u_offset]) / 2; |
| v = (s[(sh - 1 - y) * src_stride + even_x * bpp + v_offset] + |
| s[(sh - 1 - y) * src_stride + even_x * bpp + v_offset]) / 2; |
| |
| d[y * dest_stride + x * bpp + u_offset] = u; |
| d[y * dest_stride + x * bpp + v_offset] = v; |
| d[y * dest_stride + x * bpp + y_offset] = |
| s[(sh - 1 - y) * src_stride + (sw - 1 - x) * bpp + y_offset]; |
| if (x + 1 < dw) |
| d[y * dest_stride + (x + 1) * bpp + y_offset] = |
| s[(sh - 1 - y) * src_stride + (sw - 1 - (x + 1)) * bpp + |
| y_offset]; |
| } |
| } |
| break; |
| case GST_VIDEO_FLIP_METHOD_HORIZ: |
| for (y = 0; y < dh; y++) { |
| for (x = 0; x < dw; x += 2) { |
| guint8 u; |
| guint8 v; |
| /* u/v must be calculated using the offset of the even column */ |
| gint even_x = ((sw - 1 - x) & ~1); |
| |
| u = (s[y * src_stride + even_x * bpp + u_offset] + |
| s[y * src_stride + even_x * bpp + u_offset]) / 2; |
| v = (s[y * src_stride + even_x * bpp + v_offset] + |
| s[y * src_stride + even_x * bpp + v_offset]) / 2; |
| |
| d[y * dest_stride + x * bpp + u_offset] = u; |
| d[y * dest_stride + x * bpp + v_offset] = v; |
| d[y * dest_stride + x * bpp + y_offset] = |
| s[y * src_stride + (sw - 1 - x) * bpp + y_offset]; |
| if (x + 1 < dw) |
| d[y * dest_stride + (x + 1) * bpp + y_offset] = |
| s[y * src_stride + (sw - 1 - (x + 1)) * bpp + y_offset]; |
| } |
| } |
| break; |
| case GST_VIDEO_FLIP_METHOD_VERT: |
| for (y = 0; y < dh; y++) { |
| for (x = 0; x < dw; x += 2) { |
| guint8 u; |
| guint8 v; |
| /* u/v must be calculated using the offset of the even column */ |
| gint even_x = (x & ~1); |
| |
| u = (s[(sh - 1 - y) * src_stride + even_x * bpp + u_offset] + |
| s[(sh - 1 - y) * src_stride + even_x * bpp + u_offset]) / 2; |
| v = (s[(sh - 1 - y) * src_stride + even_x * bpp + v_offset] + |
| s[(sh - 1 - y) * src_stride + even_x * bpp + v_offset]) / 2; |
| |
| d[y * dest_stride + x * bpp + u_offset] = u; |
| d[y * dest_stride + x * bpp + v_offset] = v; |
| d[y * dest_stride + x * bpp + y_offset] = |
| s[(sh - 1 - y) * src_stride + x * bpp + y_offset]; |
| if (x + 1 < dw) |
| d[y * dest_stride + (x + 1) * bpp + y_offset] = |
| s[(sh - 1 - y) * src_stride + (x + 1) * bpp + y_offset]; |
| } |
| } |
| break; |
| case GST_VIDEO_FLIP_METHOD_TRANS: |
| for (y = 0; y < dh; y++) { |
| for (x = 0; x < dw; x += 2) { |
| guint8 u; |
| guint8 v; |
| /* u/v must be calculated using the offset of the even column */ |
| gint even_y = (y & ~1); |
| |
| u = s[x * src_stride + even_y * bpp + u_offset]; |
| if (x + 1 < dw) |
| u = (s[(x + 1) * src_stride + even_y * bpp + u_offset] + u) >> 1; |
| v = s[x * src_stride + even_y * bpp + v_offset]; |
| if (x + 1 < dw) |
| v = (s[(x + 1) * src_stride + even_y * bpp + v_offset] + v) >> 1; |
| |
| d[y * dest_stride + x * bpp + u_offset] = u; |
| d[y * dest_stride + x * bpp + v_offset] = v; |
| d[y * dest_stride + x * bpp + y_offset] = |
| s[x * src_stride + y * bpp + y_offset]; |
| if (x + 1 < dw) |
| d[y * dest_stride + (x + 1) * bpp + y_offset] = |
| s[(x + 1) * src_stride + y * bpp + y_offset]; |
| } |
| } |
| break; |
| case GST_VIDEO_FLIP_METHOD_OTHER: |
| for (y = 0; y < dh; y++) { |
| for (x = 0; x < dw; x += 2) { |
| guint8 u; |
| guint8 v; |
| /* u/v must be calculated using the offset of the even column */ |
| gint even_y = ((sw - 1 - y) & ~1); |
| |
| u = s[(sh - 1 - x) * src_stride + even_y * bpp + u_offset]; |
| if (x + 1 < dw) |
| u = (s[(sh - 1 - (x + 1)) * src_stride + even_y * bpp + u_offset] |
| + u) >> 1; |
| v = s[(sh - 1 - x) * src_stride + even_y * bpp + v_offset]; |
| if (x + 1 < dw) |
| v = (s[(sh - 1 - (x + 1)) * src_stride + even_y * bpp + v_offset] |
| + v) >> 1; |
| |
| d[y * dest_stride + x * bpp + u_offset] = u; |
| d[y * dest_stride + x * bpp + v_offset] = v; |
| d[y * dest_stride + x * bpp + y_offset] = |
| s[(sh - 1 - x) * src_stride + (sw - 1 - y) * bpp + y_offset]; |
| if (x + 1 < dw) |
| d[y * dest_stride + (x + 1) * bpp + y_offset] = |
| s[(sh - 1 - (x + 1)) * src_stride + (sw - 1 - y) * bpp + |
| y_offset]; |
| } |
| } |
| break; |
| case GST_VIDEO_FLIP_METHOD_IDENTITY: |
| g_assert_not_reached (); |
| break; |
| default: |
| g_assert_not_reached (); |
| break; |
| } |
| } |
| |
| |
| static gboolean |
| gst_video_flip_set_caps (GstBaseTransform * btrans, GstCaps * incaps, |
| GstCaps * outcaps) |
| { |
| GstVideoFlip *vf = GST_VIDEO_FLIP (btrans); |
| GstVideoFormat in_format, out_format; |
| gboolean ret = FALSE; |
| |
| vf->process = NULL; |
| |
| if (!gst_video_format_parse_caps (incaps, &in_format, &vf->from_width, |
| &vf->from_height) |
| || !gst_video_format_parse_caps (outcaps, &out_format, &vf->to_width, |
| &vf->to_height)) |
| goto invalid_caps; |
| |
| if (in_format != out_format) |
| goto invalid_caps; |
| vf->format = in_format; |
| |
| /* Check that they are correct */ |
| switch (vf->method) { |
| case GST_VIDEO_FLIP_METHOD_90R: |
| case GST_VIDEO_FLIP_METHOD_90L: |
| case GST_VIDEO_FLIP_METHOD_TRANS: |
| case GST_VIDEO_FLIP_METHOD_OTHER: |
| if ((vf->from_width != vf->to_height) || |
| (vf->from_height != vf->to_width)) { |
| GST_ERROR_OBJECT (vf, "we are inverting width and height but caps " |
| "are not correct : %dx%d to %dx%d", vf->from_width, |
| vf->from_height, vf->to_width, vf->to_height); |
| goto beach; |
| } |
| break; |
| case GST_VIDEO_FLIP_METHOD_IDENTITY: |
| |
| break; |
| case GST_VIDEO_FLIP_METHOD_180: |
| case GST_VIDEO_FLIP_METHOD_HORIZ: |
| case GST_VIDEO_FLIP_METHOD_VERT: |
| if ((vf->from_width != vf->to_width) || |
| (vf->from_height != vf->to_height)) { |
| GST_ERROR_OBJECT (vf, "we are keeping width and height but caps " |
| "are not correct : %dx%d to %dx%d", vf->from_width, |
| vf->from_height, vf->to_width, vf->to_height); |
| goto beach; |
| } |
| break; |
| default: |
| g_assert_not_reached (); |
| break; |
| } |
| |
| ret = TRUE; |
| |
| switch (vf->format) { |
| case GST_VIDEO_FORMAT_I420: |
| case GST_VIDEO_FORMAT_YV12: |
| case GST_VIDEO_FORMAT_Y444: |
| vf->process = gst_video_flip_planar_yuv; |
| break; |
| case GST_VIDEO_FORMAT_YUY2: |
| case GST_VIDEO_FORMAT_UYVY: |
| case GST_VIDEO_FORMAT_YVYU: |
| vf->process = gst_video_flip_y422; |
| break; |
| case GST_VIDEO_FORMAT_AYUV: |
| case GST_VIDEO_FORMAT_ARGB: |
| case GST_VIDEO_FORMAT_ABGR: |
| case GST_VIDEO_FORMAT_RGBA: |
| case GST_VIDEO_FORMAT_BGRA: |
| case GST_VIDEO_FORMAT_xRGB: |
| case GST_VIDEO_FORMAT_xBGR: |
| case GST_VIDEO_FORMAT_RGBx: |
| case GST_VIDEO_FORMAT_BGRx: |
| case GST_VIDEO_FORMAT_RGB: |
| case GST_VIDEO_FORMAT_BGR: |
| vf->process = gst_video_flip_packed_simple; |
| break; |
| default: |
| break; |
| } |
| |
| beach: |
| return ret && (vf->process != NULL); |
| |
| invalid_caps: |
| GST_ERROR_OBJECT (vf, "Invalid caps: %" GST_PTR_FORMAT " -> %" GST_PTR_FORMAT, |
| incaps, outcaps); |
| return FALSE; |
| } |
| |
| static void |
| gst_video_flip_before_transform (GstBaseTransform * trans, GstBuffer * in) |
| { |
| GstVideoFlip *videoflip = GST_VIDEO_FLIP (trans); |
| GstClockTime timestamp, stream_time; |
| |
| timestamp = GST_BUFFER_TIMESTAMP (in); |
| stream_time = |
| gst_segment_to_stream_time (&trans->segment, GST_FORMAT_TIME, timestamp); |
| |
| GST_DEBUG_OBJECT (videoflip, "sync to %" GST_TIME_FORMAT, |
| GST_TIME_ARGS (timestamp)); |
| |
| if (GST_CLOCK_TIME_IS_VALID (stream_time)) |
| gst_object_sync_values (G_OBJECT (videoflip), stream_time); |
| } |
| |
| static GstFlowReturn |
| gst_video_flip_transform (GstBaseTransform * trans, GstBuffer * in, |
| GstBuffer * out) |
| { |
| GstVideoFlip *videoflip = GST_VIDEO_FLIP (trans); |
| guint8 *dest; |
| const guint8 *src; |
| |
| if (G_UNLIKELY (videoflip->process == NULL)) |
| goto not_negotiated; |
| |
| src = GST_BUFFER_DATA (in); |
| dest = GST_BUFFER_DATA (out); |
| |
| GST_LOG_OBJECT (videoflip, "videoflip: flipping %dx%d to %dx%d (%s)", |
| videoflip->from_width, videoflip->from_height, videoflip->to_width, |
| videoflip->to_height, video_flip_methods[videoflip->method].value_nick); |
| |
| GST_OBJECT_LOCK (videoflip); |
| videoflip->process (videoflip, dest, src); |
| GST_OBJECT_UNLOCK (videoflip); |
| |
| return GST_FLOW_OK; |
| |
| not_negotiated: |
| GST_ERROR_OBJECT (videoflip, "Not negotiated yet"); |
| return GST_FLOW_NOT_NEGOTIATED; |
| } |
| |
| static gboolean |
| gst_video_flip_src_event (GstBaseTransform * trans, GstEvent * event) |
| { |
| GstVideoFlip *vf = GST_VIDEO_FLIP (trans); |
| gdouble new_x, new_y, x, y; |
| GstStructure *structure; |
| gboolean ret; |
| |
| GST_DEBUG_OBJECT (vf, "handling %s event", GST_EVENT_TYPE_NAME (event)); |
| |
| switch (GST_EVENT_TYPE (event)) { |
| case GST_EVENT_NAVIGATION: |
| event = |
| GST_EVENT (gst_mini_object_make_writable (GST_MINI_OBJECT (event))); |
| |
| structure = (GstStructure *) gst_event_get_structure (event); |
| if (gst_structure_get_double (structure, "pointer_x", &x) && |
| gst_structure_get_double (structure, "pointer_y", &y)) { |
| GST_DEBUG_OBJECT (vf, "converting %fx%f", x, y); |
| switch (vf->method) { |
| case GST_VIDEO_FLIP_METHOD_90R: |
| new_x = y; |
| new_y = vf->to_width - x; |
| break; |
| case GST_VIDEO_FLIP_METHOD_90L: |
| new_x = vf->to_height - y; |
| new_y = x; |
| break; |
| case GST_VIDEO_FLIP_METHOD_OTHER: |
| new_x = vf->to_height - y; |
| new_y = vf->to_width - x; |
| break; |
| case GST_VIDEO_FLIP_METHOD_TRANS: |
| new_x = y; |
| new_y = x; |
| break; |
| case GST_VIDEO_FLIP_METHOD_180: |
| new_x = vf->to_width - x; |
| new_y = vf->to_height - y; |
| break; |
| case GST_VIDEO_FLIP_METHOD_HORIZ: |
| new_x = vf->to_width - x; |
| new_y = y; |
| break; |
| case GST_VIDEO_FLIP_METHOD_VERT: |
| new_x = x; |
| new_y = vf->to_height - y; |
| break; |
| default: |
| new_x = x; |
| new_y = y; |
| break; |
| } |
| GST_DEBUG_OBJECT (vf, "to %fx%f", new_x, new_y); |
| gst_structure_set (structure, "pointer_x", G_TYPE_DOUBLE, new_x, |
| "pointer_y", G_TYPE_DOUBLE, new_y, NULL); |
| } |
| break; |
| default: |
| break; |
| } |
| |
| ret = GST_BASE_TRANSFORM_CLASS (parent_class)->src_event (trans, event); |
| |
| return ret; |
| } |
| |
| static void |
| gst_video_flip_set_property (GObject * object, guint prop_id, |
| const GValue * value, GParamSpec * pspec) |
| { |
| GstVideoFlip *videoflip = GST_VIDEO_FLIP (object); |
| |
| switch (prop_id) { |
| case PROP_METHOD: |
| { |
| GstVideoFlipMethod method; |
| |
| method = g_value_get_enum (value); |
| GST_OBJECT_LOCK (videoflip); |
| if (method != videoflip->method) { |
| GstBaseTransform *btrans = GST_BASE_TRANSFORM (videoflip); |
| |
| GST_DEBUG_OBJECT (videoflip, "Changing method from %s to %s", |
| video_flip_methods[videoflip->method].value_nick, |
| video_flip_methods[method].value_nick); |
| |
| videoflip->method = method; |
| GST_OBJECT_UNLOCK (videoflip); |
| |
| gst_base_transform_set_passthrough (btrans, |
| method == GST_VIDEO_FLIP_METHOD_IDENTITY); |
| gst_base_transform_reconfigure (btrans); |
| } else { |
| GST_OBJECT_UNLOCK (videoflip); |
| } |
| } |
| break; |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| break; |
| } |
| } |
| |
| static void |
| gst_video_flip_get_property (GObject * object, guint prop_id, GValue * value, |
| GParamSpec * pspec) |
| { |
| GstVideoFlip *videoflip = GST_VIDEO_FLIP (object); |
| |
| switch (prop_id) { |
| case PROP_METHOD: |
| g_value_set_enum (value, videoflip->method); |
| break; |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| break; |
| } |
| } |
| |
| static void |
| gst_video_flip_base_init (gpointer g_class) |
| { |
| GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); |
| |
| gst_element_class_set_details_simple (element_class, "Video flipper", |
| "Filter/Effect/Video", |
| "Flips and rotates video", "David Schleef <ds@schleef.org>"); |
| |
| gst_element_class_add_pad_template (element_class, |
| gst_static_pad_template_get (&gst_video_flip_sink_template)); |
| gst_element_class_add_pad_template (element_class, |
| gst_static_pad_template_get (&gst_video_flip_src_template)); |
| } |
| |
| static void |
| gst_video_flip_class_init (GstVideoFlipClass * klass) |
| { |
| GObjectClass *gobject_class = (GObjectClass *) klass; |
| GstBaseTransformClass *trans_class = (GstBaseTransformClass *) klass; |
| |
| GST_DEBUG_CATEGORY_INIT (video_flip_debug, "videoflip", 0, "videoflip"); |
| |
| gobject_class->set_property = gst_video_flip_set_property; |
| gobject_class->get_property = gst_video_flip_get_property; |
| |
| g_object_class_install_property (gobject_class, PROP_METHOD, |
| g_param_spec_enum ("method", "method", "method", |
| GST_TYPE_VIDEO_FLIP_METHOD, PROP_METHOD_DEFAULT, |
| GST_PARAM_CONTROLLABLE | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| |
| trans_class->transform_caps = |
| GST_DEBUG_FUNCPTR (gst_video_flip_transform_caps); |
| trans_class->set_caps = GST_DEBUG_FUNCPTR (gst_video_flip_set_caps); |
| trans_class->get_unit_size = GST_DEBUG_FUNCPTR (gst_video_flip_get_unit_size); |
| trans_class->transform = GST_DEBUG_FUNCPTR (gst_video_flip_transform); |
| trans_class->before_transform = |
| GST_DEBUG_FUNCPTR (gst_video_flip_before_transform); |
| trans_class->src_event = GST_DEBUG_FUNCPTR (gst_video_flip_src_event); |
| } |
| |
| static void |
| gst_video_flip_init (GstVideoFlip * videoflip, GstVideoFlipClass * klass) |
| { |
| videoflip->method = PROP_METHOD_DEFAULT; |
| gst_base_transform_set_passthrough (GST_BASE_TRANSFORM (videoflip), TRUE); |
| } |
