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gstreamer/gst-libs/gst/video/video-info.c
Thibault Saunier 909baa2360 Pass the code through codespell
2019-08-30 13:05:36 +00:00

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* Library <2002> Ronald Bultje <rbultje@ronald.bitfreak.net>
* 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:video-info
* @title: GstVideoInfo
* @short_description: Structures and enumerations to describe raw images
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <string.h>
#include <stdio.h>
#include "video-info.h"
#include "video-tile.h"
#ifndef GST_DISABLE_GST_DEBUG
#define GST_CAT_DEFAULT ensure_debug_category()
static GstDebugCategory *
ensure_debug_category (void)
{
static gsize cat_gonce = 0;
if (g_once_init_enter (&cat_gonce)) {
gsize cat_done;
cat_done = (gsize) _gst_debug_category_new ("video-info", 0,
"video-info structure");
g_once_init_leave (&cat_gonce, cat_done);
}
return (GstDebugCategory *) cat_gonce;
}
#else
#define ensure_debug_category() /* NOOP */
#endif /* GST_DISABLE_GST_DEBUG */
/**
* gst_video_info_copy:
* @info: a #GstVideoInfo
*
* Copy a GstVideoInfo structure.
*
* Returns: a new #GstVideoInfo. free with gst_video_info_free.
*
* Since: 1.6
*/
GstVideoInfo *
gst_video_info_copy (const GstVideoInfo * info)
{
return g_slice_dup (GstVideoInfo, info);
}
/**
* gst_video_info_free:
* @info: a #GstVideoInfo
*
* Free a GstVideoInfo structure previously allocated with gst_video_info_new()
* or gst_video_info_copy().
*
* Since: 1.6
*/
void
gst_video_info_free (GstVideoInfo * info)
{
g_slice_free (GstVideoInfo, info);
}
G_DEFINE_BOXED_TYPE (GstVideoInfo, gst_video_info,
(GBoxedCopyFunc) gst_video_info_copy, (GBoxedFreeFunc) gst_video_info_free);
/**
* gst_video_info_new:
*
* Allocate a new #GstVideoInfo that is also initialized with
* gst_video_info_init().
*
* Returns: a new #GstVideoInfo. free with gst_video_info_free().
*
* Since: 1.6
*/
GstVideoInfo *
gst_video_info_new (void)
{
GstVideoInfo *info;
info = g_slice_new (GstVideoInfo);
gst_video_info_init (info);
return info;
}
static gboolean fill_planes (GstVideoInfo * info);
/**
* gst_video_info_init:
* @info: a #GstVideoInfo
*
* Initialize @info with default values.
*/
void
gst_video_info_init (GstVideoInfo * info)
{
g_return_if_fail (info != NULL);
memset (info, 0, sizeof (GstVideoInfo));
info->finfo = gst_video_format_get_info (GST_VIDEO_FORMAT_UNKNOWN);
info->views = 1;
/* arrange for sensible defaults, e.g. if turned into caps */
info->fps_n = 0;
info->fps_d = 1;
info->par_n = 1;
info->par_d = 1;
GST_VIDEO_INFO_MULTIVIEW_MODE (info) = GST_VIDEO_MULTIVIEW_MODE_NONE;
GST_VIDEO_INFO_MULTIVIEW_FLAGS (info) = GST_VIDEO_MULTIVIEW_FLAGS_NONE;
GST_VIDEO_INFO_FIELD_ORDER (info) = GST_VIDEO_FIELD_ORDER_UNKNOWN;
}
#define MAKE_COLORIMETRY(r,m,t,p) { \
GST_VIDEO_COLOR_RANGE ##r, GST_VIDEO_COLOR_MATRIX_ ##m, \
GST_VIDEO_TRANSFER_ ##t, GST_VIDEO_COLOR_PRIMARIES_ ##p }
#define DEFAULT_YUV_SD 0
#define DEFAULT_YUV_HD 1
#define DEFAULT_RGB 2
#define DEFAULT_GRAY 3
#define DEFAULT_UNKNOWN 4
#define DEFAULT_YUV_UHD 5
static const GstVideoColorimetry default_color[] = {
MAKE_COLORIMETRY (_16_235, BT601, BT709, SMPTE170M),
MAKE_COLORIMETRY (_16_235, BT709, BT709, BT709),
MAKE_COLORIMETRY (_0_255, RGB, SRGB, BT709),
MAKE_COLORIMETRY (_0_255, BT601, UNKNOWN, UNKNOWN),
MAKE_COLORIMETRY (_UNKNOWN, UNKNOWN, UNKNOWN, UNKNOWN),
MAKE_COLORIMETRY (_16_235, BT2020, BT2020_12, BT2020),
};
static void
set_default_colorimetry (GstVideoInfo * info)
{
const GstVideoFormatInfo *finfo = info->finfo;
if (GST_VIDEO_FORMAT_INFO_IS_YUV (finfo)) {
if (info->height >= 2160) {
info->chroma_site = GST_VIDEO_CHROMA_SITE_H_COSITED;
info->colorimetry = default_color[DEFAULT_YUV_UHD];
} else if (info->height > 576) {
info->chroma_site = GST_VIDEO_CHROMA_SITE_H_COSITED;
info->colorimetry = default_color[DEFAULT_YUV_HD];
} else {
info->chroma_site = GST_VIDEO_CHROMA_SITE_NONE;
info->colorimetry = default_color[DEFAULT_YUV_SD];
}
} else if (GST_VIDEO_FORMAT_INFO_IS_GRAY (finfo)) {
info->colorimetry = default_color[DEFAULT_GRAY];
} else if (GST_VIDEO_FORMAT_INFO_IS_RGB (finfo)) {
info->colorimetry = default_color[DEFAULT_RGB];
} else {
info->colorimetry = default_color[DEFAULT_UNKNOWN];
}
}
static gboolean
validate_colorimetry (GstVideoInfo * info)
{
const GstVideoFormatInfo *finfo = info->finfo;
if (!GST_VIDEO_FORMAT_INFO_IS_RGB (finfo) &&
info->colorimetry.matrix == GST_VIDEO_COLOR_MATRIX_RGB) {
GST_WARNING
("color matrix RGB is only supported with RGB format, %s is not",
finfo->name);
return FALSE;
}
if (GST_VIDEO_FORMAT_INFO_IS_YUV (finfo) &&
info->colorimetry.matrix == GST_VIDEO_COLOR_MATRIX_UNKNOWN) {
GST_WARNING ("Need to specify a color matrix when using YUV format (%s)",
finfo->name);
return FALSE;
}
return TRUE;
}
static gboolean
gst_video_info_set_format_common (GstVideoInfo * info, GstVideoFormat format,
guint width, guint height)
{
g_return_val_if_fail (info != NULL, FALSE);
g_return_val_if_fail (format != GST_VIDEO_FORMAT_UNKNOWN, FALSE);
if (width > G_MAXINT || height > G_MAXINT)
return FALSE;
gst_video_info_init (info);
info->finfo = gst_video_format_get_info (format);
info->width = width;
info->height = height;
info->views = 1;
set_default_colorimetry (info);
return TRUE;
}
/**
* gst_video_info_set_format:
* @info: a #GstVideoInfo
* @format: the format
* @width: a width
* @height: a height
*
* Set the default info for a video frame of @format and @width and @height.
*
* Note: This initializes @info first, no values are preserved. This function
* does not set the offsets correctly for interlaced vertically
* subsampled formats.
*
* Returns: %FALSE if the returned video info is invalid, e.g. because the
* size of a frame can't be represented as a 32 bit integer (Since: 1.12)
*/
gboolean
gst_video_info_set_format (GstVideoInfo * info, GstVideoFormat format,
guint width, guint height)
{
if (!gst_video_info_set_format_common (info, format, width, height))
return FALSE;
return fill_planes (info);
}
/**
* gst_video_info_set_interlaced_format:
* @info: a #GstVideoInfo
* @format: the format
* @mode: a #GstVideoInterlaceMode
* @width: a width
* @height: a height
*
* Same as #gst_video_info_set_format but also allowing to set the interlaced
* mode.
*
* Returns: %FALSE if the returned video info is invalid, e.g. because the
* size of a frame can't be represented as a 32 bit integer.
*
* Since: 1.16
*/
gboolean
gst_video_info_set_interlaced_format (GstVideoInfo * info,
GstVideoFormat format, GstVideoInterlaceMode mode, guint width,
guint height)
{
if (!gst_video_info_set_format_common (info, format, width, height))
return FALSE;
GST_VIDEO_INFO_INTERLACE_MODE (info) = mode;
return fill_planes (info);
}
static const gchar *interlace_mode[] = {
"progressive",
"interleaved",
"mixed",
"fields",
"alternate"
};
/**
* gst_video_interlace_mode_to_string:
* @mode: a #GstVideoInterlaceMode
*
* Convert @mode to its string representation.
*
* Returns: @mode as a string or NULL if @mode in invalid.
*
* Since: 1.6
*/
const gchar *
gst_video_interlace_mode_to_string (GstVideoInterlaceMode mode)
{
if (((guint) mode) >= G_N_ELEMENTS (interlace_mode))
return NULL;
return interlace_mode[mode];
}
/**
* gst_video_interlace_mode_from_string:
* @mode: a mode
*
* Convert @mode to a #GstVideoInterlaceMode
*
* Returns: the #GstVideoInterlaceMode of @mode or
* #GST_VIDEO_INTERLACE_MODE_PROGRESSIVE when @mode is not a valid
* string representation for a #GstVideoInterlaceMode.
*
* Since: 1.6
*/
GstVideoInterlaceMode
gst_video_interlace_mode_from_string (const gchar * mode)
{
gint i;
for (i = 0; i < G_N_ELEMENTS (interlace_mode); i++) {
if (g_str_equal (interlace_mode[i], mode))
return i;
}
return GST_VIDEO_INTERLACE_MODE_PROGRESSIVE;
}
static const gchar *field_order[] = {
"unknown",
"top-field-first",
"bottom-field-first"
};
/**
* gst_video_field_order_to_string:
* @order: a #GstVideoFieldOrder
*
* Convert @order to its string representation.
*
* Returns: @order as a string or NULL if @order in invalid.
*
* Since: 1.12
*/
const gchar *
gst_video_field_order_to_string (GstVideoFieldOrder order)
{
if (((guint) order) >= G_N_ELEMENTS (field_order))
return NULL;
return field_order[order];
}
/**
* gst_video_field_order_from_string:
* @order: a field order
*
* Convert @order to a #GstVideoFieldOrder
*
* Returns: the #GstVideoFieldOrder of @order or
* #GST_VIDEO_FIELD_ORDER_UNKNOWN when @order is not a valid
* string representation for a #GstVideoFieldOrder.
*
* Since: 1.12
*/
GstVideoFieldOrder
gst_video_field_order_from_string (const gchar * order)
{
gint i;
for (i = 0; i < G_N_ELEMENTS (field_order); i++) {
if (g_str_equal (field_order[i], order))
return i;
}
return GST_VIDEO_FIELD_ORDER_UNKNOWN;
}
/**
* gst_video_info_from_caps:
* @info: a #GstVideoInfo
* @caps: a #GstCaps
*
* Parse @caps and update @info.
*
* Returns: TRUE if @caps could be parsed
*/
gboolean
gst_video_info_from_caps (GstVideoInfo * info, const GstCaps * caps)
{
GstStructure *structure;
const gchar *s;
GstVideoFormat format = GST_VIDEO_FORMAT_UNKNOWN;
gint width = 0, height = 0;
gint fps_n, fps_d;
gint par_n, par_d;
guint multiview_flags;
g_return_val_if_fail (info != NULL, FALSE);
g_return_val_if_fail (caps != NULL, FALSE);
g_return_val_if_fail (gst_caps_is_fixed (caps), FALSE);
GST_DEBUG ("parsing caps %" GST_PTR_FORMAT, caps);
structure = gst_caps_get_structure (caps, 0);
if (gst_structure_has_name (structure, "video/x-raw")) {
if (!(s = gst_structure_get_string (structure, "format")))
goto no_format;
format = gst_video_format_from_string (s);
if (format == GST_VIDEO_FORMAT_UNKNOWN)
goto unknown_format;
} else if (g_str_has_prefix (gst_structure_get_name (structure), "video/") ||
g_str_has_prefix (gst_structure_get_name (structure), "image/")) {
format = GST_VIDEO_FORMAT_ENCODED;
} else {
goto wrong_name;
}
/* width and height are mandatory, except for non-raw-formats */
if (!gst_structure_get_int (structure, "width", &width) &&
format != GST_VIDEO_FORMAT_ENCODED)
goto no_width;
if (!gst_structure_get_int (structure, "height", &height) &&
format != GST_VIDEO_FORMAT_ENCODED)
goto no_height;
gst_video_info_init (info);
info->finfo = gst_video_format_get_info (format);
info->width = width;
info->height = height;
if (gst_structure_get_fraction (structure, "framerate", &fps_n, &fps_d)) {
if (fps_n == 0) {
/* variable framerate */
info->flags |= GST_VIDEO_FLAG_VARIABLE_FPS;
/* see if we have a max-framerate */
gst_structure_get_fraction (structure, "max-framerate", &fps_n, &fps_d);
}
info->fps_n = fps_n;
info->fps_d = fps_d;
} else {
/* unspecified is variable framerate */
info->fps_n = 0;
info->fps_d = 1;
}
if (gst_structure_get_fraction (structure, "pixel-aspect-ratio",
&par_n, &par_d)) {
info->par_n = par_n;
info->par_d = par_d;
} else {
info->par_n = 1;
info->par_d = 1;
}
if ((s = gst_structure_get_string (structure, "interlace-mode")))
info->interlace_mode = gst_video_interlace_mode_from_string (s);
else
info->interlace_mode = GST_VIDEO_INTERLACE_MODE_PROGRESSIVE;
/* Interlaced feature is mandatory for raw alternate streams */
if (info->interlace_mode == GST_VIDEO_INTERLACE_MODE_ALTERNATE &&
format != GST_VIDEO_FORMAT_ENCODED) {
GstCapsFeatures *f;
f = gst_caps_get_features (caps, 0);
if (!f
|| !gst_caps_features_contains (f, GST_CAPS_FEATURE_FORMAT_INTERLACED))
goto alternate_no_feature;
}
if (GST_VIDEO_INFO_IS_INTERLACED (info) &&
(s = gst_structure_get_string (structure, "field-order"))) {
GST_VIDEO_INFO_FIELD_ORDER (info) = gst_video_field_order_from_string (s);
} else {
GST_VIDEO_INFO_FIELD_ORDER (info) = GST_VIDEO_FIELD_ORDER_UNKNOWN;
}
{
if ((s = gst_structure_get_string (structure, "multiview-mode")))
GST_VIDEO_INFO_MULTIVIEW_MODE (info) =
gst_video_multiview_mode_from_caps_string (s);
else
GST_VIDEO_INFO_MULTIVIEW_MODE (info) = GST_VIDEO_MULTIVIEW_MODE_NONE;
if (gst_structure_get_flagset (structure, "multiview-flags",
&multiview_flags, NULL))
GST_VIDEO_INFO_MULTIVIEW_FLAGS (info) = multiview_flags;
if (!gst_structure_get_int (structure, "views", &info->views))
info->views = 1;
/* At one point, I tried normalising the half-aspect flag here,
* but it behaves weird for GstVideoInfo operations other than
* directly converting to/from caps - sometimes causing the
* PAR to be doubled/halved too many times */
}
if ((s = gst_structure_get_string (structure, "chroma-site")))
info->chroma_site = gst_video_chroma_from_string (s);
else
info->chroma_site = GST_VIDEO_CHROMA_SITE_UNKNOWN;
if ((s = gst_structure_get_string (structure, "colorimetry"))) {
if (!gst_video_colorimetry_from_string (&info->colorimetry, s)) {
GST_WARNING ("unparsable colorimetry, using default");
set_default_colorimetry (info);
} else if (!validate_colorimetry (info)) {
GST_WARNING ("invalid colorimetry, using default");
set_default_colorimetry (info);
} else {
/* force RGB matrix for RGB formats */
if (GST_VIDEO_FORMAT_INFO_IS_RGB (info->finfo) &&
info->colorimetry.matrix != GST_VIDEO_COLOR_MATRIX_RGB) {
GST_WARNING ("invalid matrix %d for RGB format, using RGB",
info->colorimetry.matrix);
info->colorimetry.matrix = GST_VIDEO_COLOR_MATRIX_RGB;
}
}
} else {
GST_DEBUG ("no colorimetry, using default");
set_default_colorimetry (info);
}
if (!fill_planes (info))
return FALSE;
return TRUE;
/* ERROR */
wrong_name:
{
GST_ERROR ("wrong name '%s', expected video/ or image/",
gst_structure_get_name (structure));
return FALSE;
}
no_format:
{
GST_ERROR ("no format given");
return FALSE;
}
unknown_format:
{
GST_ERROR ("unknown format '%s' given", s);
return FALSE;
}
no_width:
{
GST_ERROR ("no width property given");
return FALSE;
}
no_height:
{
GST_ERROR ("no height property given");
return FALSE;
}
alternate_no_feature:
{
GST_ERROR
("caps has 'interlace-mode=alternate' but doesn't have the Interlaced feature");
return FALSE;
}
}
/**
* gst_video_info_is_equal:
* @info: a #GstVideoInfo
* @other: a #GstVideoInfo
*
* Compares two #GstVideoInfo and returns whether they are equal or not
*
* Returns: %TRUE if @info and @other are equal, else %FALSE.
*/
gboolean
gst_video_info_is_equal (const GstVideoInfo * info, const GstVideoInfo * other)
{
gint i;
if (GST_VIDEO_INFO_FORMAT (info) != GST_VIDEO_INFO_FORMAT (other))
return FALSE;
if (GST_VIDEO_INFO_INTERLACE_MODE (info) !=
GST_VIDEO_INFO_INTERLACE_MODE (other))
return FALSE;
if (GST_VIDEO_INFO_FLAGS (info) != GST_VIDEO_INFO_FLAGS (other))
return FALSE;
if (GST_VIDEO_INFO_WIDTH (info) != GST_VIDEO_INFO_WIDTH (other))
return FALSE;
if (GST_VIDEO_INFO_HEIGHT (info) != GST_VIDEO_INFO_HEIGHT (other))
return FALSE;
if (GST_VIDEO_INFO_SIZE (info) != GST_VIDEO_INFO_SIZE (other))
return FALSE;
if (GST_VIDEO_INFO_PAR_N (info) != GST_VIDEO_INFO_PAR_N (other))
return FALSE;
if (GST_VIDEO_INFO_PAR_D (info) != GST_VIDEO_INFO_PAR_D (other))
return FALSE;
if (GST_VIDEO_INFO_FPS_N (info) != GST_VIDEO_INFO_FPS_N (other))
return FALSE;
if (GST_VIDEO_INFO_FPS_D (info) != GST_VIDEO_INFO_FPS_D (other))
return FALSE;
if (!gst_video_colorimetry_is_equal (&GST_VIDEO_INFO_COLORIMETRY (info),
&GST_VIDEO_INFO_COLORIMETRY (other)))
return FALSE;
if (GST_VIDEO_INFO_CHROMA_SITE (info) != GST_VIDEO_INFO_CHROMA_SITE (other))
return FALSE;
if (GST_VIDEO_INFO_MULTIVIEW_MODE (info) !=
GST_VIDEO_INFO_MULTIVIEW_MODE (other))
return FALSE;
if (GST_VIDEO_INFO_MULTIVIEW_FLAGS (info) !=
GST_VIDEO_INFO_MULTIVIEW_FLAGS (other))
return FALSE;
if (GST_VIDEO_INFO_VIEWS (info) != GST_VIDEO_INFO_VIEWS (other))
return FALSE;
for (i = 0; i < info->finfo->n_planes; i++) {
if (info->stride[i] != other->stride[i])
return FALSE;
if (info->offset[i] != other->offset[i])
return FALSE;
}
return TRUE;
}
/**
* gst_video_info_to_caps:
* @info: a #GstVideoInfo
*
* Convert the values of @info into a #GstCaps.
*
* Returns: a new #GstCaps containing the info of @info.
*/
GstCaps *
gst_video_info_to_caps (GstVideoInfo * info)
{
GstCaps *caps;
const gchar *format;
gchar *color;
gint par_n, par_d;
GstVideoColorimetry colorimetry;
g_return_val_if_fail (info != NULL, NULL);
g_return_val_if_fail (info->finfo != NULL, NULL);
g_return_val_if_fail (info->finfo->format != GST_VIDEO_FORMAT_UNKNOWN, NULL);
format = gst_video_format_to_string (info->finfo->format);
g_return_val_if_fail (format != NULL, NULL);
caps = gst_caps_new_simple ("video/x-raw",
"format", G_TYPE_STRING, format,
"width", G_TYPE_INT, info->width,
"height", G_TYPE_INT, info->height, NULL);
par_n = info->par_n;
par_d = info->par_d;
gst_caps_set_simple (caps, "interlace-mode", G_TYPE_STRING,
gst_video_interlace_mode_to_string (info->interlace_mode), NULL);
if ((info->interlace_mode == GST_VIDEO_INTERLACE_MODE_INTERLEAVED ||
info->interlace_mode == GST_VIDEO_INTERLACE_MODE_ALTERNATE) &&
GST_VIDEO_INFO_FIELD_ORDER (info) != GST_VIDEO_FIELD_ORDER_UNKNOWN) {
gst_caps_set_simple (caps, "field-order", G_TYPE_STRING,
gst_video_field_order_to_string (GST_VIDEO_INFO_FIELD_ORDER (info)),
NULL);
}
if (info->interlace_mode == GST_VIDEO_INTERLACE_MODE_ALTERNATE) {
/* 'alternate' mode must always be accompanied by interlaced caps feature.
*/
GstCapsFeatures *features;
features = gst_caps_features_new (GST_CAPS_FEATURE_FORMAT_INTERLACED, NULL);
gst_caps_set_features (caps, 0, features);
}
if (GST_VIDEO_INFO_MULTIVIEW_MODE (info) != GST_VIDEO_MULTIVIEW_MODE_NONE) {
const gchar *caps_str = NULL;
/* If the half-aspect flag is set, applying it into the PAR of the
* resulting caps now seems safe, and helps with automatic behaviour
* in elements that aren't explicitly multiview aware */
if (GST_VIDEO_INFO_MULTIVIEW_FLAGS (info) &
GST_VIDEO_MULTIVIEW_FLAGS_HALF_ASPECT) {
GST_VIDEO_INFO_MULTIVIEW_FLAGS (info) &=
~GST_VIDEO_MULTIVIEW_FLAGS_HALF_ASPECT;
switch (GST_VIDEO_INFO_MULTIVIEW_MODE (info)) {
case GST_VIDEO_MULTIVIEW_MODE_SIDE_BY_SIDE:
case GST_VIDEO_MULTIVIEW_MODE_SIDE_BY_SIDE_QUINCUNX:
case GST_VIDEO_MULTIVIEW_MODE_COLUMN_INTERLEAVED:
case GST_VIDEO_MULTIVIEW_MODE_CHECKERBOARD:
par_n *= 2; /* double the width / half the height */
break;
case GST_VIDEO_MULTIVIEW_MODE_ROW_INTERLEAVED:
case GST_VIDEO_MULTIVIEW_MODE_TOP_BOTTOM:
par_d *= 2; /* half the width / double the height */
break;
default:
break;
}
}
caps_str =
gst_video_multiview_mode_to_caps_string (GST_VIDEO_INFO_MULTIVIEW_MODE
(info));
if (caps_str != NULL) {
gst_caps_set_simple (caps, "multiview-mode", G_TYPE_STRING,
caps_str, "multiview-flags", GST_TYPE_VIDEO_MULTIVIEW_FLAGSET,
GST_VIDEO_INFO_MULTIVIEW_FLAGS (info), GST_FLAG_SET_MASK_EXACT, NULL);
}
}
gst_caps_set_simple (caps, "pixel-aspect-ratio",
GST_TYPE_FRACTION, par_n, par_d, NULL);
if (info->chroma_site != GST_VIDEO_CHROMA_SITE_UNKNOWN)
gst_caps_set_simple (caps, "chroma-site", G_TYPE_STRING,
gst_video_chroma_to_string (info->chroma_site), NULL);
/* make sure we set the RGB matrix for RGB formats */
colorimetry = info->colorimetry;
if (GST_VIDEO_FORMAT_INFO_IS_RGB (info->finfo) &&
colorimetry.matrix != GST_VIDEO_COLOR_MATRIX_RGB) {
GST_WARNING ("invalid matrix %d for RGB format, using RGB",
colorimetry.matrix);
colorimetry.matrix = GST_VIDEO_COLOR_MATRIX_RGB;
}
if ((color = gst_video_colorimetry_to_string (&colorimetry))) {
gst_caps_set_simple (caps, "colorimetry", G_TYPE_STRING, color, NULL);
g_free (color);
}
if (info->views > 1)
gst_caps_set_simple (caps, "views", G_TYPE_INT, info->views, NULL);
if (info->flags & GST_VIDEO_FLAG_VARIABLE_FPS && info->fps_n != 0) {
/* variable fps with a max-framerate */
gst_caps_set_simple (caps, "framerate", GST_TYPE_FRACTION, 0, 1,
"max-framerate", GST_TYPE_FRACTION, info->fps_n, info->fps_d, NULL);
} else {
/* no variable fps or no max-framerate */
gst_caps_set_simple (caps, "framerate", GST_TYPE_FRACTION,
info->fps_n, info->fps_d, NULL);
}
return caps;
}
static gboolean
fill_planes (GstVideoInfo * info)
{
gsize width, height, cr_h;
gint bpp = 0, i;
width = (gsize) info->width;
height = (gsize) GST_VIDEO_INFO_FIELD_HEIGHT (info);
/* Sanity check the resulting frame size for overflows */
for (i = 0; i < GST_VIDEO_INFO_N_COMPONENTS (info); i++)
bpp += GST_VIDEO_INFO_COMP_DEPTH (info, i);
bpp = GST_ROUND_UP_8 (bpp) / 8;
if (bpp > 0 && GST_ROUND_UP_128 ((guint64) width) * ((guint64) height) >=
G_MAXUINT / bpp) {
GST_ERROR ("Frame size %ux%u would overflow", info->width, info->height);
return FALSE;
}
switch (info->finfo->format) {
case GST_VIDEO_FORMAT_YUY2:
case GST_VIDEO_FORMAT_YVYU:
case GST_VIDEO_FORMAT_UYVY:
case GST_VIDEO_FORMAT_VYUY:
info->stride[0] = GST_ROUND_UP_4 (width * 2);
info->offset[0] = 0;
info->size = info->stride[0] * height;
break;
case GST_VIDEO_FORMAT_AYUV:
case GST_VIDEO_FORMAT_RGBx:
case GST_VIDEO_FORMAT_RGBA:
case GST_VIDEO_FORMAT_BGRx:
case GST_VIDEO_FORMAT_BGRA:
case GST_VIDEO_FORMAT_xRGB:
case GST_VIDEO_FORMAT_ARGB:
case GST_VIDEO_FORMAT_xBGR:
case GST_VIDEO_FORMAT_ABGR:
case GST_VIDEO_FORMAT_r210:
case GST_VIDEO_FORMAT_Y410:
case GST_VIDEO_FORMAT_VUYA:
case GST_VIDEO_FORMAT_BGR10A2_LE:
case GST_VIDEO_FORMAT_RGB10A2_LE:
info->stride[0] = width * 4;
info->offset[0] = 0;
info->size = info->stride[0] * height;
break;
case GST_VIDEO_FORMAT_RGB16:
case GST_VIDEO_FORMAT_BGR16:
case GST_VIDEO_FORMAT_RGB15:
case GST_VIDEO_FORMAT_BGR15:
info->stride[0] = GST_ROUND_UP_4 (width * 2);
info->offset[0] = 0;
info->size = info->stride[0] * height;
break;
case GST_VIDEO_FORMAT_RGB:
case GST_VIDEO_FORMAT_BGR:
case GST_VIDEO_FORMAT_v308:
case GST_VIDEO_FORMAT_IYU2:
info->stride[0] = GST_ROUND_UP_4 (width * 3);
info->offset[0] = 0;
info->size = info->stride[0] * height;
break;
case GST_VIDEO_FORMAT_v210:
info->stride[0] = ((width + 47) / 48) * 128;
info->offset[0] = 0;
info->size = info->stride[0] * height;
break;
case GST_VIDEO_FORMAT_v216:
case GST_VIDEO_FORMAT_Y210:
info->stride[0] = GST_ROUND_UP_8 (width * 4);
info->offset[0] = 0;
info->size = info->stride[0] * height;
break;
case GST_VIDEO_FORMAT_GRAY8:
info->stride[0] = GST_ROUND_UP_4 (width);
info->offset[0] = 0;
info->size = info->stride[0] * height;
break;
case GST_VIDEO_FORMAT_GRAY16_BE:
case GST_VIDEO_FORMAT_GRAY16_LE:
info->stride[0] = GST_ROUND_UP_4 (width * 2);
info->offset[0] = 0;
info->size = info->stride[0] * height;
break;
case GST_VIDEO_FORMAT_UYVP:
info->stride[0] = GST_ROUND_UP_4 ((width * 2 * 5 + 3) / 4);
info->offset[0] = 0;
info->size = info->stride[0] * height;
break;
case GST_VIDEO_FORMAT_RGB8P:
info->stride[0] = GST_ROUND_UP_4 (width);
info->stride[1] = 4;
info->offset[0] = 0;
info->offset[1] = info->stride[0] * height;
info->size = info->offset[1] + (4 * 256);
break;
case GST_VIDEO_FORMAT_IYU1:
info->stride[0] = GST_ROUND_UP_4 (GST_ROUND_UP_4 (width) +
GST_ROUND_UP_4 (width) / 2);
info->offset[0] = 0;
info->size = info->stride[0] * height;
break;
case GST_VIDEO_FORMAT_ARGB64:
case GST_VIDEO_FORMAT_AYUV64:
info->stride[0] = width * 8;
info->offset[0] = 0;
info->size = info->stride[0] * height;
break;
case GST_VIDEO_FORMAT_I420:
case GST_VIDEO_FORMAT_YV12: /* same as I420, but plane 1+2 swapped */
info->stride[0] = GST_ROUND_UP_4 (width);
info->stride[1] = GST_ROUND_UP_4 (GST_ROUND_UP_2 (width) / 2);
info->stride[2] = info->stride[1];
info->offset[0] = 0;
info->offset[1] = info->stride[0] * GST_ROUND_UP_2 (height);
cr_h = GST_ROUND_UP_2 (height) / 2;
if (GST_VIDEO_INFO_IS_INTERLACED (info))
cr_h = GST_ROUND_UP_2 (cr_h);
info->offset[2] = info->offset[1] + info->stride[1] * cr_h;
info->size = info->offset[2] + info->stride[2] * cr_h;
break;
case GST_VIDEO_FORMAT_Y41B:
info->stride[0] = GST_ROUND_UP_4 (width);
info->stride[1] = GST_ROUND_UP_16 (width) / 4;
info->stride[2] = info->stride[1];
info->offset[0] = 0;
info->offset[1] = info->stride[0] * height;
info->offset[2] = info->offset[1] + info->stride[1] * height;
/* simplification of ROUNDUP4(w)*h + 2*((ROUNDUP16(w)/4)*h */
info->size = (info->stride[0] + (GST_ROUND_UP_16 (width) / 2)) * height;
break;
case GST_VIDEO_FORMAT_Y42B:
info->stride[0] = GST_ROUND_UP_4 (width);
info->stride[1] = GST_ROUND_UP_8 (width) / 2;
info->stride[2] = info->stride[1];
info->offset[0] = 0;
info->offset[1] = info->stride[0] * height;
info->offset[2] = info->offset[1] + info->stride[1] * height;
/* simplification of ROUNDUP4(w)*h + 2*(ROUNDUP8(w)/2)*h */
info->size = (info->stride[0] + GST_ROUND_UP_8 (width)) * height;
break;
case GST_VIDEO_FORMAT_Y444:
case GST_VIDEO_FORMAT_GBR:
info->stride[0] = GST_ROUND_UP_4 (width);
info->stride[1] = info->stride[0];
info->stride[2] = info->stride[0];
info->offset[0] = 0;
info->offset[1] = info->stride[0] * height;
info->offset[2] = info->offset[1] * 2;
info->size = info->stride[0] * height * 3;
break;
case GST_VIDEO_FORMAT_GBRA:
info->stride[0] = GST_ROUND_UP_4 (width);
info->stride[1] = info->stride[0];
info->stride[2] = info->stride[0];
info->stride[3] = info->stride[0];
info->offset[0] = 0;
info->offset[1] = info->stride[0] * height;
info->offset[2] = info->offset[1] * 2;
info->offset[3] = info->offset[1] * 3;
info->size = info->stride[0] * height * 4;
break;
case GST_VIDEO_FORMAT_NV12:
case GST_VIDEO_FORMAT_NV21:
info->stride[0] = GST_ROUND_UP_4 (width);
info->stride[1] = info->stride[0];
info->offset[0] = 0;
info->offset[1] = info->stride[0] * GST_ROUND_UP_2 (height);
cr_h = GST_ROUND_UP_2 (height) / 2;
if (GST_VIDEO_INFO_IS_INTERLACED (info))
cr_h = GST_ROUND_UP_2 (cr_h);
info->size = info->offset[1] + info->stride[0] * cr_h;
break;
case GST_VIDEO_FORMAT_NV16:
case GST_VIDEO_FORMAT_NV61:
info->stride[0] = GST_ROUND_UP_4 (width);
info->stride[1] = info->stride[0];
info->offset[0] = 0;
info->offset[1] = info->stride[0] * height;
info->size = info->stride[0] * height * 2;
break;
case GST_VIDEO_FORMAT_NV24:
info->stride[0] = GST_ROUND_UP_4 (width);
info->stride[1] = GST_ROUND_UP_4 (width * 2);
info->offset[0] = 0;
info->offset[1] = info->stride[0] * height;
info->size = info->stride[0] * height + info->stride[1] * height;
break;
case GST_VIDEO_FORMAT_A420:
info->stride[0] = GST_ROUND_UP_4 (width);
info->stride[1] = GST_ROUND_UP_4 (GST_ROUND_UP_2 (width) / 2);
info->stride[2] = info->stride[1];
info->stride[3] = info->stride[0];
info->offset[0] = 0;
info->offset[1] = info->stride[0] * GST_ROUND_UP_2 (height);
cr_h = GST_ROUND_UP_2 (height) / 2;
if (GST_VIDEO_INFO_IS_INTERLACED (info))
cr_h = GST_ROUND_UP_2 (cr_h);
info->offset[2] = info->offset[1] + info->stride[1] * cr_h;
info->offset[3] = info->offset[2] + info->stride[2] * cr_h;
info->size = info->offset[3] + info->stride[0] * GST_ROUND_UP_2 (height);
break;
case GST_VIDEO_FORMAT_YUV9:
case GST_VIDEO_FORMAT_YVU9:
info->stride[0] = GST_ROUND_UP_4 (width);
info->stride[1] = GST_ROUND_UP_4 (GST_ROUND_UP_4 (width) / 4);
info->stride[2] = info->stride[1];
info->offset[0] = 0;
info->offset[1] = info->stride[0] * height;
cr_h = GST_ROUND_UP_4 (height) / 4;
if (GST_VIDEO_INFO_IS_INTERLACED (info))
cr_h = GST_ROUND_UP_2 (cr_h);
info->offset[2] = info->offset[1] + info->stride[1] * cr_h;
info->size = info->offset[2] + info->stride[2] * cr_h;
break;
case GST_VIDEO_FORMAT_I420_10LE:
case GST_VIDEO_FORMAT_I420_10BE:
case GST_VIDEO_FORMAT_I420_12LE:
case GST_VIDEO_FORMAT_I420_12BE:
info->stride[0] = GST_ROUND_UP_4 (width * 2);
info->stride[1] = GST_ROUND_UP_4 (width);
info->stride[2] = info->stride[1];
info->offset[0] = 0;
info->offset[1] = info->stride[0] * GST_ROUND_UP_2 (height);
cr_h = GST_ROUND_UP_2 (height) / 2;
if (GST_VIDEO_INFO_IS_INTERLACED (info))
cr_h = GST_ROUND_UP_2 (cr_h);
info->offset[2] = info->offset[1] + info->stride[1] * cr_h;
info->size = info->offset[2] + info->stride[2] * cr_h;
break;
case GST_VIDEO_FORMAT_I422_10LE:
case GST_VIDEO_FORMAT_I422_10BE:
case GST_VIDEO_FORMAT_I422_12LE:
case GST_VIDEO_FORMAT_I422_12BE:
info->stride[0] = GST_ROUND_UP_4 (width * 2);
info->stride[1] = GST_ROUND_UP_4 (width);
info->stride[2] = info->stride[1];
info->offset[0] = 0;
info->offset[1] = info->stride[0] * GST_ROUND_UP_2 (height);
info->offset[2] = info->offset[1] +
info->stride[1] * GST_ROUND_UP_2 (height);
info->size = info->offset[2] + info->stride[2] * GST_ROUND_UP_2 (height);
break;
case GST_VIDEO_FORMAT_Y444_10LE:
case GST_VIDEO_FORMAT_Y444_10BE:
case GST_VIDEO_FORMAT_Y444_12LE:
case GST_VIDEO_FORMAT_Y444_12BE:
case GST_VIDEO_FORMAT_GBR_10LE:
case GST_VIDEO_FORMAT_GBR_10BE:
case GST_VIDEO_FORMAT_GBR_12LE:
case GST_VIDEO_FORMAT_GBR_12BE:
case GST_VIDEO_FORMAT_Y444_16LE:
case GST_VIDEO_FORMAT_Y444_16BE:
info->stride[0] = GST_ROUND_UP_4 (width * 2);
info->stride[1] = info->stride[0];
info->stride[2] = info->stride[0];
info->offset[0] = 0;
info->offset[1] = info->stride[0] * height;
info->offset[2] = info->offset[1] * 2;
info->size = info->stride[0] * height * 3;
break;
case GST_VIDEO_FORMAT_GBRA_10LE:
case GST_VIDEO_FORMAT_GBRA_10BE:
case GST_VIDEO_FORMAT_GBRA_12LE:
case GST_VIDEO_FORMAT_GBRA_12BE:
info->stride[0] = GST_ROUND_UP_4 (width * 2);
info->stride[1] = info->stride[0];
info->stride[2] = info->stride[0];
info->stride[3] = info->stride[0];
info->offset[0] = 0;
info->offset[1] = info->stride[0] * height;
info->offset[2] = info->offset[1] * 2;
info->offset[3] = info->offset[1] * 3;
info->size = info->stride[0] * height * 4;
break;
case GST_VIDEO_FORMAT_NV12_64Z32:
info->stride[0] =
GST_VIDEO_TILE_MAKE_STRIDE (GST_ROUND_UP_128 (width) / 64,
GST_ROUND_UP_32 (height) / 32);
info->stride[1] =
GST_VIDEO_TILE_MAKE_STRIDE (GST_ROUND_UP_128 (width) / 64,
GST_ROUND_UP_64 (height) / 64);
info->offset[0] = 0;
info->offset[1] = GST_ROUND_UP_128 (width) * GST_ROUND_UP_32 (height);
info->size = info->offset[1] +
GST_ROUND_UP_128 (width) * GST_ROUND_UP_64 (height) / 2;
break;
case GST_VIDEO_FORMAT_A420_10LE:
case GST_VIDEO_FORMAT_A420_10BE:
info->stride[0] = GST_ROUND_UP_4 (width * 2);
info->stride[1] = GST_ROUND_UP_4 (width);
info->stride[2] = info->stride[1];
info->stride[3] = info->stride[0];
info->offset[0] = 0;
info->offset[1] = info->stride[0] * GST_ROUND_UP_2 (height);
cr_h = GST_ROUND_UP_2 (height) / 2;
if (GST_VIDEO_INFO_IS_INTERLACED (info))
cr_h = GST_ROUND_UP_2 (cr_h);
info->offset[2] = info->offset[1] + info->stride[1] * cr_h;
info->offset[3] = info->offset[2] + info->stride[2] * cr_h;
info->size = info->offset[3] + info->stride[0] * GST_ROUND_UP_2 (height);
break;
case GST_VIDEO_FORMAT_A422_10LE:
case GST_VIDEO_FORMAT_A422_10BE:
info->stride[0] = GST_ROUND_UP_4 (width * 2);
info->stride[1] = GST_ROUND_UP_4 (width);
info->stride[2] = info->stride[1];
info->stride[3] = info->stride[0];
info->offset[0] = 0;
info->offset[1] = info->stride[0] * GST_ROUND_UP_2 (height);
info->offset[2] = info->offset[1] +
info->stride[1] * GST_ROUND_UP_2 (height);
info->offset[3] =
info->offset[2] + info->stride[2] * GST_ROUND_UP_2 (height);
info->size = info->offset[3] + info->stride[0] * GST_ROUND_UP_2 (height);
break;
case GST_VIDEO_FORMAT_A444_10LE:
case GST_VIDEO_FORMAT_A444_10BE:
info->stride[0] = GST_ROUND_UP_4 (width * 2);
info->stride[1] = info->stride[0];
info->stride[2] = info->stride[0];
info->stride[3] = info->stride[0];
info->offset[0] = 0;
info->offset[1] = info->stride[0] * height;
info->offset[2] = info->offset[1] * 2;
info->offset[3] = info->offset[1] * 3;
info->size = info->stride[0] * height * 4;
break;
case GST_VIDEO_FORMAT_P010_10LE:
case GST_VIDEO_FORMAT_P010_10BE:
case GST_VIDEO_FORMAT_P016_LE:
case GST_VIDEO_FORMAT_P016_BE:
info->stride[0] = GST_ROUND_UP_4 (width * 2);
info->stride[1] = info->stride[0];
info->offset[0] = 0;
info->offset[1] = info->stride[0] * GST_ROUND_UP_2 (height);
cr_h = GST_ROUND_UP_2 (height) / 2;
info->size = info->offset[1] + info->stride[0] * cr_h;
break;
case GST_VIDEO_FORMAT_GRAY10_LE32:
info->stride[0] = (width + 2) / 3 * 4;
info->offset[0] = 0;
info->size = info->stride[0] * GST_ROUND_UP_2 (height);
break;
case GST_VIDEO_FORMAT_NV12_10LE32:
info->stride[0] = (width + 2) / 3 * 4;
info->stride[1] = info->stride[0];
info->offset[0] = 0;
info->offset[1] = info->stride[0] * GST_ROUND_UP_2 (height);
cr_h = GST_ROUND_UP_2 (height) / 2;
if (GST_VIDEO_INFO_IS_INTERLACED (info))
cr_h = GST_ROUND_UP_2 (cr_h);
info->size = info->offset[1] + info->stride[0] * cr_h;
break;
case GST_VIDEO_FORMAT_NV16_10LE32:
info->stride[0] = (width + 2) / 3 * 4;
info->stride[1] = info->stride[0];
info->offset[0] = 0;
info->offset[1] = info->stride[0] * height;
info->size = info->stride[0] * height * 2;
break;
case GST_VIDEO_FORMAT_NV12_10LE40:
info->stride[0] = ((width * 5 >> 2) + 4) / 5 * 5;
info->stride[1] = info->stride[0];
info->offset[0] = 0;
info->offset[1] = info->stride[0] * GST_ROUND_UP_2 (height);
cr_h = GST_ROUND_UP_2 (height) / 2;
if (GST_VIDEO_INFO_IS_INTERLACED (info))
cr_h = GST_ROUND_UP_2 (cr_h);
info->size = info->offset[1] + info->stride[0] * cr_h;
break;
case GST_VIDEO_FORMAT_ENCODED:
break;
case GST_VIDEO_FORMAT_UNKNOWN:
GST_ERROR ("invalid format");
g_warning ("invalid format");
return FALSE;
break;
}
return TRUE;
}
/**
* gst_video_info_convert:
* @info: a #GstVideoInfo
* @src_format: #GstFormat of the @src_value
* @src_value: value to convert
* @dest_format: #GstFormat of the @dest_value
* @dest_value: (out): 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 used to handle pad queries of the type GST_QUERY_CONVERT.
*
* Returns: TRUE if the conversion was successful.
*/
gboolean
gst_video_info_convert (GstVideoInfo * info,
GstFormat src_format, gint64 src_value,
GstFormat dest_format, gint64 * dest_value)
{
gboolean ret = FALSE;
int fps_n, fps_d;
gsize size;
g_return_val_if_fail (info != NULL, 0);
g_return_val_if_fail (info->finfo != NULL, 0);
g_return_val_if_fail (info->finfo->format != GST_VIDEO_FORMAT_UNKNOWN, 0);
g_return_val_if_fail (info->size > 0, 0);
size = info->size;
fps_n = info->fps_n;
fps_d = info->fps_d;
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 (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 (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;
}
/**
* gst_video_info_align:
* @info: a #GstVideoInfo
* @align: alignment parameters
*
* Adjust the offset and stride fields in @info so that the padding and
* stride alignment in @align is respected.
*
* Extra padding will be added to the right side when stride alignment padding
* is required and @align will be updated with the new padding values.
*
* Returns: %FALSE if alignment could not be applied, e.g. because the
* size of a frame can't be represented as a 32 bit integer (Since: 1.12)
*/
gboolean
gst_video_info_align (GstVideoInfo * info, GstVideoAlignment * align)
{
const GstVideoFormatInfo *vinfo = info->finfo;
gint width, height;
gint padded_width, padded_height;
gint i, n_planes;
gboolean aligned;
width = GST_VIDEO_INFO_WIDTH (info);
height = GST_VIDEO_INFO_HEIGHT (info);
GST_LOG ("padding %u-%ux%u-%u", align->padding_top,
align->padding_left, align->padding_right, align->padding_bottom);
n_planes = GST_VIDEO_INFO_N_PLANES (info);
if (GST_VIDEO_FORMAT_INFO_HAS_PALETTE (vinfo))
n_planes--;
/* first make sure the left padding does not cause alignment problems later */
do {
GST_LOG ("left padding %u", align->padding_left);
aligned = TRUE;
for (i = 0; i < n_planes; i++) {
gint hedge;
/* this is the amount of pixels to add as left padding */
hedge = GST_VIDEO_FORMAT_INFO_SCALE_WIDTH (vinfo, i, align->padding_left);
hedge *= GST_VIDEO_FORMAT_INFO_PSTRIDE (vinfo, i);
GST_LOG ("plane %d, padding %d, alignment %u", i, hedge,
align->stride_align[i]);
aligned &= (hedge & align->stride_align[i]) == 0;
}
if (aligned)
break;
GST_LOG ("unaligned padding, increasing padding");
/* increase padded_width */
align->padding_left += align->padding_left & ~(align->padding_left - 1);
} while (!aligned);
/* add the padding */
padded_width = width + align->padding_left + align->padding_right;
padded_height = height + align->padding_top + align->padding_bottom;
do {
GST_LOG ("padded dimension %u-%u", padded_width, padded_height);
info->width = padded_width;
info->height = padded_height;
if (!fill_planes (info))
return FALSE;
/* check alignment */
aligned = TRUE;
for (i = 0; i < n_planes; i++) {
GST_LOG ("plane %d, stride %d, alignment %u", i, info->stride[i],
align->stride_align[i]);
aligned &= (info->stride[i] & align->stride_align[i]) == 0;
}
if (aligned)
break;
GST_LOG ("unaligned strides, increasing dimension");
/* increase padded_width */
padded_width += padded_width & ~(padded_width - 1);
} while (!aligned);
align->padding_right = padded_width - width - align->padding_left;
info->width = width;
info->height = height;
for (i = 0; i < n_planes; i++) {
gint vedge, hedge, comp;
/* Find the component for this plane, FIXME, we assume the plane number and
* component number is the same for now, for scaling the dimensions this is
* currently true for all formats but it might not be when adding new
* formats. We might need to add a plane subsamling in the format info to
* make this more generic or maybe use a plane -> component mapping. */
comp = i;
hedge =
GST_VIDEO_FORMAT_INFO_SCALE_WIDTH (vinfo, comp, align->padding_left);
vedge =
GST_VIDEO_FORMAT_INFO_SCALE_HEIGHT (vinfo, comp, align->padding_top);
GST_DEBUG ("plane %d: comp: %d, hedge %d vedge %d align %d stride %d", i,
comp, hedge, vedge, align->stride_align[i], info->stride[i]);
info->offset[i] += (vedge * info->stride[i]) +
(hedge * GST_VIDEO_FORMAT_INFO_PSTRIDE (vinfo, comp));
}
return TRUE;
}
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