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gstreamer/gst-libs/gst/vaapi/gstvaapidisplay.c
Gwenole Beauchesne 059e032103 docs: expose new interfaces.
2013-01-14 12:58:41 +01:00

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/*
* gstvaapidisplay.c - VA display abstraction
*
* Copyright (C) 2010-2011 Splitted-Desktop Systems
* Copyright (C) 2011-2012 Intel Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
/**
* SECTION:gstvaapidisplay
* @short_description: VA display abstraction
*/
#include "sysdeps.h"
#include <string.h>
#include "gstvaapiutils.h"
#include "gstvaapivalue.h"
#include "gstvaapidisplay.h"
#include "gstvaapidisplay_priv.h"
#include "gstvaapiworkarounds.h"
#define DEBUG 1
#include "gstvaapidebug.h"
GST_DEBUG_CATEGORY(gst_debug_vaapi);
G_DEFINE_TYPE(GstVaapiDisplay, gst_vaapi_display, G_TYPE_OBJECT)
typedef struct _GstVaapiConfig GstVaapiConfig;
struct _GstVaapiConfig {
GstVaapiProfile profile;
GstVaapiEntrypoint entrypoint;
};
typedef struct _GstVaapiProperty GstVaapiProperty;
struct _GstVaapiProperty {
const gchar *name;
VADisplayAttribute attribute;
gint old_value;
};
typedef struct _GstVaapiFormatInfo GstVaapiFormatInfo;
struct _GstVaapiFormatInfo {
GstVaapiImageFormat format;
guint flags;
};
#define DEFAULT_RENDER_MODE GST_VAAPI_RENDER_MODE_TEXTURE
#define DEFAULT_ROTATION GST_VAAPI_ROTATION_0
enum {
PROP_0,
PROP_DISPLAY,
PROP_DISPLAY_TYPE,
PROP_WIDTH,
PROP_HEIGHT,
PROP_RENDER_MODE,
PROP_ROTATION,
PROP_HUE,
PROP_SATURATION,
PROP_BRIGHTNESS,
PROP_CONTRAST,
N_PROPERTIES
};
static GstVaapiDisplayCache *g_display_cache = NULL;
static GParamSpec *g_properties[N_PROPERTIES] = { NULL, };
static gboolean
get_attribute(GstVaapiDisplay *display, VADisplayAttribType type, gint *value);
static gboolean
set_attribute(GstVaapiDisplay *display, VADisplayAttribType type, gint value);
static gboolean
get_color_balance(GstVaapiDisplay *display, guint prop_id, gfloat *v);
static gboolean
set_color_balance(GstVaapiDisplay *display, guint prop_id, gfloat v);
static inline GstVaapiDisplayCache *
get_display_cache(void)
{
if (!g_display_cache)
g_display_cache = gst_vaapi_display_cache_new();
return g_display_cache;
}
GstVaapiDisplayCache *
gst_vaapi_display_get_cache(void)
{
return get_display_cache();
}
static void
free_display_cache(void)
{
if (!g_display_cache)
return;
if (gst_vaapi_display_cache_get_size(g_display_cache) > 0)
return;
gst_vaapi_display_cache_free(g_display_cache);
g_display_cache = NULL;
}
/* GstVaapiDisplayType enumerations */
GType
gst_vaapi_display_type_get_type(void)
{
static GType g_type = 0;
static const GEnumValue display_types[] = {
{ GST_VAAPI_DISPLAY_TYPE_ANY,
"Auto detection", "any" },
#if USE_X11
{ GST_VAAPI_DISPLAY_TYPE_X11,
"VA/X11 display", "x11" },
#endif
#if USE_GLX
{ GST_VAAPI_DISPLAY_TYPE_GLX,
"VA/GLX display", "glx" },
#endif
#if USE_WAYLAND
{ GST_VAAPI_DISPLAY_TYPE_WAYLAND,
"VA/Wayland display", "wayland" },
#endif
#if USE_DRM
{ GST_VAAPI_DISPLAY_TYPE_DRM,
"VA/DRM display", "drm" },
#endif
{ 0, NULL, NULL },
};
if (!g_type)
g_type = g_enum_register_static("GstVaapiDisplayType", display_types);
return g_type;
}
/* Append GstVaapiImageFormat to formats array */
static inline void
append_format(GArray *formats, GstVaapiImageFormat format, guint flags)
{
GstVaapiFormatInfo fi;
fi.format = format;
fi.flags = flags;
g_array_append_val(formats, fi);
}
/* Append VAImageFormats to formats array */
static void
append_formats(GArray *formats, const VAImageFormat *va_formats,
guint *flags, guint n)
{
GstVaapiImageFormat format;
const GstVaapiFormatInfo *YV12_fip = NULL;
const GstVaapiFormatInfo *I420_fip = NULL;
guint i;
for (i = 0; i < n; i++) {
const VAImageFormat * const va_format = &va_formats[i];
const GstVaapiFormatInfo **fipp;
format = gst_vaapi_image_format(va_format);
if (!format) {
GST_DEBUG("unsupported format %" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS(va_format->fourcc));
continue;
}
append_format(formats, format, flags ? flags[i] : 0);
switch (format) {
case GST_VAAPI_IMAGE_YV12:
fipp = &YV12_fip;
break;
case GST_VAAPI_IMAGE_I420:
fipp = &I420_fip;
break;
default:
fipp = NULL;
break;
}
if (fipp)
*fipp = &g_array_index(formats, GstVaapiFormatInfo,
formats->len - 1);
}
/* Append I420 (resp. YV12) format if YV12 (resp. I420) is not
supported by the underlying driver */
if (YV12_fip && !I420_fip)
append_format(formats, GST_VAAPI_IMAGE_I420, YV12_fip->flags);
else if (I420_fip && !YV12_fip)
append_format(formats, GST_VAAPI_IMAGE_YV12, I420_fip->flags);
}
/* Sort image formats. Prefer YUV formats first */
static gint
compare_yuv_formats(gconstpointer a, gconstpointer b)
{
const GstVaapiImageFormat fmt1 = ((GstVaapiFormatInfo *)a)->format;
const GstVaapiImageFormat fmt2 = ((GstVaapiFormatInfo *)b)->format;
const gboolean is_fmt1_yuv = gst_vaapi_image_format_is_yuv(fmt1);
const gboolean is_fmt2_yuv = gst_vaapi_image_format_is_yuv(fmt2);
if (is_fmt1_yuv != is_fmt2_yuv)
return is_fmt1_yuv ? -1 : 1;
return ((gint)gst_vaapi_image_format_get_score(fmt1) -
(gint)gst_vaapi_image_format_get_score(fmt2));
}
/* Sort subpicture formats. Prefer RGB formats first */
static gint
compare_rgb_formats(gconstpointer a, gconstpointer b)
{
const GstVaapiImageFormat fmt1 = ((GstVaapiFormatInfo *)a)->format;
const GstVaapiImageFormat fmt2 = ((GstVaapiFormatInfo *)b)->format;
const gboolean is_fmt1_rgb = gst_vaapi_image_format_is_rgb(fmt1);
const gboolean is_fmt2_rgb = gst_vaapi_image_format_is_rgb(fmt2);
if (is_fmt1_rgb != is_fmt2_rgb)
return is_fmt1_rgb ? -1 : 1;
return ((gint)gst_vaapi_image_format_get_score(fmt1) -
(gint)gst_vaapi_image_format_get_score(fmt2));
}
/* Check if configs array contains profile at entrypoint */
static inline gboolean
find_config(
GArray *configs,
GstVaapiProfile profile,
GstVaapiEntrypoint entrypoint
)
{
GstVaapiConfig *config;
guint i;
if (!configs)
return FALSE;
for (i = 0; i < configs->len; i++) {
config = &g_array_index(configs, GstVaapiConfig, i);
if (config->profile == profile && config->entrypoint == entrypoint)
return TRUE;
}
return FALSE;
}
/* HACK: append H.263 Baseline profile if MPEG-4:2 Simple profile is supported */
static void
append_h263_config(GArray *configs)
{
GstVaapiConfig *config, tmp_config;
GstVaapiConfig *mpeg4_simple_config = NULL;
GstVaapiConfig *h263_baseline_config = NULL;
guint i;
if (!WORKAROUND_H263_BASELINE_DECODE_PROFILE)
return;
if (!configs)
return;
for (i = 0; i < configs->len; i++) {
config = &g_array_index(configs, GstVaapiConfig, i);
if (config->profile == GST_VAAPI_PROFILE_MPEG4_SIMPLE)
mpeg4_simple_config = config;
else if (config->profile == GST_VAAPI_PROFILE_H263_BASELINE)
h263_baseline_config = config;
}
if (mpeg4_simple_config && !h263_baseline_config) {
tmp_config = *mpeg4_simple_config;
tmp_config.profile = GST_VAAPI_PROFILE_H263_BASELINE;
g_array_append_val(configs, tmp_config);
}
}
/* Convert configs array to profiles as GstCaps */
static GstCaps *
get_profile_caps(GArray *configs)
{
GstVaapiConfig *config;
GstCaps *out_caps, *caps;
guint i;
if (!configs)
return NULL;
out_caps = gst_caps_new_empty();
if (!out_caps)
return NULL;
for (i = 0; i < configs->len; i++) {
config = &g_array_index(configs, GstVaapiConfig, i);
caps = gst_vaapi_profile_get_caps(config->profile);
if (caps)
gst_caps_merge(out_caps, caps);
}
return out_caps;
}
/* Find format info */
static const GstVaapiFormatInfo *
find_format_info(GArray *formats, GstVaapiImageFormat format)
{
const GstVaapiFormatInfo *fip;
guint i;
for (i = 0; i < formats->len; i++) {
fip = &g_array_index(formats, GstVaapiFormatInfo, i);
if (fip->format == format)
return fip;
}
return NULL;
}
/* Check if formats array contains format */
static inline gboolean
find_format(GArray *formats, GstVaapiImageFormat format)
{
return find_format_info(formats, format) != NULL;
}
/* Convert formats array to GstCaps */
static GstCaps *
get_format_caps(GArray *formats)
{
const GstVaapiFormatInfo *fip;
GstCaps *out_caps, *caps;
guint i;
out_caps = gst_caps_new_empty();
if (!out_caps)
return NULL;
for (i = 0; i < formats->len; i++) {
fip = &g_array_index(formats, GstVaapiFormatInfo, i);
caps = gst_vaapi_image_format_get_caps(fip->format);
if (caps)
gst_caps_append(out_caps, caps);
}
return out_caps;
}
/* Find display attribute */
static const GstVaapiProperty *
find_property(GArray *properties, const gchar *name)
{
GstVaapiProperty *prop;
guint i;
if (!name)
return NULL;
for (i = 0; i < properties->len; i++) {
prop = &g_array_index(properties, GstVaapiProperty, i);
if (strcmp(prop->name, name) == 0)
return prop;
}
return NULL;
}
#if 0
static const GstVaapiProperty *
find_property_by_type(GArray *properties, VADisplayAttribType type)
{
GstVaapiProperty *prop;
guint i;
for (i = 0; i < properties->len; i++) {
prop = &g_array_index(properties, GstVaapiProperty, i);
if (prop->attribute.type == type)
return prop;
}
return NULL;
}
#endif
static inline const GstVaapiProperty *
find_property_by_pspec(GstVaapiDisplay *display, GParamSpec *pspec)
{
return find_property(display->priv->properties, pspec->name);
}
static void
gst_vaapi_display_calculate_pixel_aspect_ratio(GstVaapiDisplay *display)
{
GstVaapiDisplayPrivate * const priv = display->priv;
gdouble ratio, delta;
gint i, j, index, windex;
static const gint par[][2] = {
{1, 1}, /* regular screen */
{16, 15}, /* PAL TV */
{11, 10}, /* 525 line Rec.601 video */
{54, 59}, /* 625 line Rec.601 video */
{64, 45}, /* 1280x1024 on 16:9 display */
{5, 3}, /* 1280x1024 on 4:3 display */
{4, 3} /* 800x600 on 16:9 display */
};
/* First, calculate the "real" ratio based on the X values;
* which is the "physical" w/h divided by the w/h in pixels of the
* display */
if (!priv->width || !priv->height || !priv->width_mm || !priv->height_mm)
ratio = 1.0;
else
ratio = (gdouble)(priv->width_mm * priv->height) /
(priv->height_mm * priv->width);
GST_DEBUG("calculated pixel aspect ratio: %f", ratio);
/* Now, find the one from par[][2] with the lowest delta to the real one */
#define DELTA(idx, w) (ABS(ratio - ((gdouble)par[idx][w] / par[idx][!(w)])))
delta = DELTA(0, 0);
index = 0;
windex = 0;
for (i = 1; i < G_N_ELEMENTS(par); i++) {
for (j = 0; j < 2; j++) {
const gdouble this_delta = DELTA(i, j);
if (this_delta < delta) {
index = i;
windex = j;
delta = this_delta;
}
}
}
#undef DELTA
priv->par_n = par[index][windex];
priv->par_d = par[index][windex ^ 1];
}
static void
gst_vaapi_display_destroy(GstVaapiDisplay *display)
{
GstVaapiDisplayPrivate * const priv = display->priv;
if (priv->decoders) {
g_array_free(priv->decoders, TRUE);
priv->decoders = NULL;
}
if (priv->encoders) {
g_array_free(priv->encoders, TRUE);
priv->encoders = NULL;
}
if (priv->image_formats) {
g_array_free(priv->image_formats, TRUE);
priv->image_formats = NULL;
}
if (priv->subpicture_formats) {
g_array_free(priv->subpicture_formats, TRUE);
priv->subpicture_formats = NULL;
}
if (priv->properties) {
g_array_free(priv->properties, TRUE);
priv->properties = NULL;
}
if (priv->display) {
if (!priv->parent)
vaTerminate(priv->display);
priv->display = NULL;
}
if (priv->create_display) {
GstVaapiDisplayClass *klass = GST_VAAPI_DISPLAY_GET_CLASS(display);
if (klass->close_display)
klass->close_display(display);
}
g_clear_object(&priv->parent);
if (g_display_cache) {
gst_vaapi_display_cache_remove(get_display_cache(), display);
free_display_cache();
}
}
static gboolean
gst_vaapi_display_create(GstVaapiDisplay *display)
{
GstVaapiDisplayPrivate * const priv = display->priv;
GstVaapiDisplayCache *cache;
gboolean has_errors = TRUE;
VADisplayAttribute *display_attrs = NULL;
VAProfile *profiles = NULL;
VAEntrypoint *entrypoints = NULL;
VAImageFormat *formats = NULL;
unsigned int *flags = NULL;
gint i, j, n, num_entrypoints, major_version, minor_version;
VAStatus status;
GstVaapiDisplayInfo info;
const GstVaapiDisplayInfo *cached_info = NULL;
memset(&info, 0, sizeof(info));
info.display = display;
info.display_type = priv->display_type;
if (priv->display)
info.va_display = priv->display;
else if (priv->create_display) {
GstVaapiDisplayClass *klass = GST_VAAPI_DISPLAY_GET_CLASS(display);
if (klass->open_display && !klass->open_display(display))
return FALSE;
if (!klass->get_display || !klass->get_display(display, &info))
return FALSE;
priv->display = info.va_display;
priv->display_type = info.display_type;
if (klass->get_size)
klass->get_size(display, &priv->width, &priv->height);
if (klass->get_size_mm)
klass->get_size_mm(display, &priv->width_mm, &priv->height_mm);
gst_vaapi_display_calculate_pixel_aspect_ratio(display);
}
if (!priv->display)
return FALSE;
cache = get_display_cache();
if (!cache)
return FALSE;
cached_info = gst_vaapi_display_cache_lookup_by_va_display(
cache,
info.va_display
);
if (cached_info) {
g_clear_object(&priv->parent);
priv->parent = g_object_ref(cached_info->display);
priv->display_type = cached_info->display_type;
}
if (!priv->parent) {
status = vaInitialize(priv->display, &major_version, &minor_version);
if (!vaapi_check_status(status, "vaInitialize()"))
goto end;
GST_DEBUG("VA-API version %d.%d", major_version, minor_version);
}
/* VA profiles */
profiles = g_new(VAProfile, vaMaxNumProfiles(priv->display));
if (!profiles)
goto end;
entrypoints = g_new(VAEntrypoint, vaMaxNumEntrypoints(priv->display));
if (!entrypoints)
goto end;
status = vaQueryConfigProfiles(priv->display, profiles, &n);
if (!vaapi_check_status(status, "vaQueryConfigProfiles()"))
goto end;
GST_DEBUG("%d profiles", n);
for (i = 0; i < n; i++) {
#if VA_CHECK_VERSION(0,34,0)
/* Introduced in VA/VPP API */
if (profiles[i] == VAProfileNone)
continue;
#endif
GST_DEBUG(" %s", string_of_VAProfile(profiles[i]));
}
priv->decoders = g_array_new(FALSE, FALSE, sizeof(GstVaapiConfig));
if (!priv->decoders)
goto end;
priv->encoders = g_array_new(FALSE, FALSE, sizeof(GstVaapiConfig));
if (!priv->encoders)
goto end;
for (i = 0; i < n; i++) {
GstVaapiConfig config;
config.profile = gst_vaapi_profile(profiles[i]);
if (!config.profile)
continue;
status = vaQueryConfigEntrypoints(
priv->display,
profiles[i],
entrypoints, &num_entrypoints
);
if (!vaapi_check_status(status, "vaQueryConfigEntrypoints()"))
continue;
for (j = 0; j < num_entrypoints; j++) {
config.entrypoint = gst_vaapi_entrypoint(entrypoints[j]);
switch (config.entrypoint) {
case GST_VAAPI_ENTRYPOINT_VLD:
case GST_VAAPI_ENTRYPOINT_IDCT:
case GST_VAAPI_ENTRYPOINT_MOCO:
g_array_append_val(priv->decoders, config);
break;
case GST_VAAPI_ENTRYPOINT_SLICE_ENCODE:
g_array_append_val(priv->encoders, config);
break;
}
}
}
append_h263_config(priv->decoders);
/* VA display attributes */
display_attrs =
g_new(VADisplayAttribute, vaMaxNumDisplayAttributes(priv->display));
if (!display_attrs)
goto end;
n = 0; /* XXX: workaround old GMA500 bug */
status = vaQueryDisplayAttributes(priv->display, display_attrs, &n);
if (!vaapi_check_status(status, "vaQueryDisplayAttributes()"))
goto end;
priv->properties = g_array_new(FALSE, FALSE, sizeof(GstVaapiProperty));
if (!priv->properties)
goto end;
GST_DEBUG("%d display attributes", n);
for (i = 0; i < n; i++) {
VADisplayAttribute * const attr = &display_attrs[i];
GstVaapiProperty prop;
gint value;
GST_DEBUG(" %s", string_of_VADisplayAttributeType(attr->type));
switch (attr->type) {
#if !VA_CHECK_VERSION(0,34,0)
case VADisplayAttribDirectSurface:
prop.name = GST_VAAPI_DISPLAY_PROP_RENDER_MODE;
break;
#endif
case VADisplayAttribRenderMode:
prop.name = GST_VAAPI_DISPLAY_PROP_RENDER_MODE;
break;
case VADisplayAttribRotation:
prop.name = GST_VAAPI_DISPLAY_PROP_ROTATION;
break;
case VADisplayAttribHue:
prop.name = GST_VAAPI_DISPLAY_PROP_HUE;
break;
case VADisplayAttribSaturation:
prop.name = GST_VAAPI_DISPLAY_PROP_SATURATION;
break;
case VADisplayAttribBrightness:
prop.name = GST_VAAPI_DISPLAY_PROP_BRIGHTNESS;
break;
case VADisplayAttribContrast:
prop.name = GST_VAAPI_DISPLAY_PROP_CONTRAST;
break;
default:
prop.name = NULL;
break;
}
if (!prop.name)
continue;
/* Assume the attribute is really supported if we can get the
* actual and current value */
if (!get_attribute(display, attr->type, &value))
continue;
/* Some drivers (e.g. EMGD) have completely random initial
* values */
if (value < attr->min_value || value > attr->max_value)
continue;
prop.attribute = *attr;
prop.old_value = value;
g_array_append_val(priv->properties, prop);
}
/* VA image formats */
formats = g_new(VAImageFormat, vaMaxNumImageFormats(priv->display));
if (!formats)
goto end;
status = vaQueryImageFormats(priv->display, formats, &n);
if (!vaapi_check_status(status, "vaQueryImageFormats()"))
goto end;
GST_DEBUG("%d image formats", n);
for (i = 0; i < n; i++)
GST_DEBUG(" %" GST_FOURCC_FORMAT, GST_FOURCC_ARGS(formats[i].fourcc));
priv->image_formats =
g_array_new(FALSE, FALSE, sizeof(GstVaapiFormatInfo));
if (!priv->image_formats)
goto end;
append_formats(priv->image_formats, formats, NULL, n);
g_array_sort(priv->image_formats, compare_yuv_formats);
/* VA subpicture formats */
n = vaMaxNumSubpictureFormats(priv->display);
formats = g_renew(VAImageFormat, formats, n);
flags = g_new(guint, n);
if (!formats || !flags)
goto end;
status = vaQuerySubpictureFormats(priv->display, formats, flags, (guint *)&n);
if (!vaapi_check_status(status, "vaQuerySubpictureFormats()"))
goto end;
GST_DEBUG("%d subpicture formats", n);
for (i = 0; i < n; i++) {
GST_DEBUG(" %" GST_FOURCC_FORMAT, GST_FOURCC_ARGS(formats[i].fourcc));
flags[i] = to_GstVaapiSubpictureFlags(flags[i]);
}
priv->subpicture_formats =
g_array_new(FALSE, FALSE, sizeof(GstVaapiFormatInfo));
if (!priv->subpicture_formats)
goto end;
append_formats(priv->subpicture_formats, formats, flags, n);
g_array_sort(priv->subpicture_formats, compare_rgb_formats);
if (!cached_info) {
if (!gst_vaapi_display_cache_add(cache, &info))
goto end;
}
has_errors = FALSE;
end:
g_free(display_attrs);
g_free(profiles);
g_free(entrypoints);
g_free(formats);
g_free(flags);
return !has_errors;
}
static void
gst_vaapi_display_lock_default(GstVaapiDisplay *display)
{
GstVaapiDisplayPrivate *priv = display->priv;
if (priv->parent)
priv = priv->parent->priv;
g_rec_mutex_lock(&priv->mutex);
}
static void
gst_vaapi_display_unlock_default(GstVaapiDisplay *display)
{
GstVaapiDisplayPrivate *priv = display->priv;
if (priv->parent)
priv = priv->parent->priv;
g_rec_mutex_unlock(&priv->mutex);
}
static void
gst_vaapi_display_finalize(GObject *object)
{
GstVaapiDisplay * const display = GST_VAAPI_DISPLAY(object);
gst_vaapi_display_destroy(display);
g_rec_mutex_clear(&display->priv->mutex);
G_OBJECT_CLASS(gst_vaapi_display_parent_class)->finalize(object);
}
static void
gst_vaapi_display_set_property(
GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec
)
{
GstVaapiDisplay * const display = GST_VAAPI_DISPLAY(object);
switch (prop_id) {
case PROP_DISPLAY:
display->priv->display = g_value_get_pointer(value);
break;
case PROP_DISPLAY_TYPE:
display->priv->display_type = g_value_get_enum(value);
break;
case PROP_RENDER_MODE:
gst_vaapi_display_set_render_mode(display, g_value_get_enum(value));
break;
case PROP_ROTATION:
gst_vaapi_display_set_rotation(display, g_value_get_enum(value));
break;
case PROP_HUE:
case PROP_SATURATION:
case PROP_BRIGHTNESS:
case PROP_CONTRAST:
set_color_balance(display, prop_id, g_value_get_float(value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
break;
}
}
static void
gst_vaapi_display_get_property(
GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec
)
{
GstVaapiDisplay * const display = GST_VAAPI_DISPLAY(object);
switch (prop_id) {
case PROP_DISPLAY:
g_value_set_pointer(value, gst_vaapi_display_get_display(display));
break;
case PROP_DISPLAY_TYPE:
g_value_set_enum(value, gst_vaapi_display_get_display_type(display));
break;
case PROP_WIDTH:
g_value_set_uint(value, gst_vaapi_display_get_width(display));
break;
case PROP_HEIGHT:
g_value_set_uint(value, gst_vaapi_display_get_height(display));
break;
case PROP_RENDER_MODE: {
GstVaapiRenderMode mode;
if (!gst_vaapi_display_get_render_mode(display, &mode))
mode = DEFAULT_RENDER_MODE;
g_value_set_enum(value, mode);
break;
}
case PROP_ROTATION:
g_value_set_enum(value, gst_vaapi_display_get_rotation(display));
break;
case PROP_HUE:
case PROP_SATURATION:
case PROP_BRIGHTNESS:
case PROP_CONTRAST: {
gfloat v;
if (!get_color_balance(display, prop_id, &v))
v = G_PARAM_SPEC_FLOAT(pspec)->default_value;
g_value_set_float(value, v);
break;
}
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
break;
}
}
static void
gst_vaapi_display_constructed(GObject *object)
{
GstVaapiDisplay * const display = GST_VAAPI_DISPLAY(object);
GObjectClass *parent_class;
display->priv->create_display = display->priv->display == NULL;
if (!gst_vaapi_display_create(display))
gst_vaapi_display_destroy(display);
parent_class = G_OBJECT_CLASS(gst_vaapi_display_parent_class);
if (parent_class->constructed)
parent_class->constructed(object);
}
static void
gst_vaapi_display_class_init(GstVaapiDisplayClass *klass)
{
GObjectClass * const object_class = G_OBJECT_CLASS(klass);
GstVaapiDisplayClass * const dpy_class = GST_VAAPI_DISPLAY_CLASS(klass);
GST_DEBUG_CATEGORY_INIT(gst_debug_vaapi, "vaapi", 0, "VA-API helper");
g_type_class_add_private(klass, sizeof(GstVaapiDisplayPrivate));
object_class->finalize = gst_vaapi_display_finalize;
object_class->set_property = gst_vaapi_display_set_property;
object_class->get_property = gst_vaapi_display_get_property;
object_class->constructed = gst_vaapi_display_constructed;
dpy_class->lock = gst_vaapi_display_lock_default;
dpy_class->unlock = gst_vaapi_display_unlock_default;
g_properties[PROP_DISPLAY] =
g_param_spec_pointer("display",
"VA display",
"VA display",
G_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY);
g_properties[PROP_DISPLAY_TYPE] =
g_param_spec_enum("display-type",
"VA display type",
"VA display type",
GST_VAAPI_TYPE_DISPLAY_TYPE,
GST_VAAPI_DISPLAY_TYPE_ANY,
G_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY);
g_properties[PROP_WIDTH] =
g_param_spec_uint("width",
"Width",
"The display width",
1, G_MAXUINT32, 1,
G_PARAM_READABLE);
g_properties[PROP_HEIGHT] =
g_param_spec_uint("height",
"height",
"The display height",
1, G_MAXUINT32, 1,
G_PARAM_READABLE);
/**
* GstVaapiDisplay:render-mode:
*
* The VA display rendering mode, expressed as a #GstVaapiRenderMode.
*/
g_properties[PROP_RENDER_MODE] =
g_param_spec_enum(GST_VAAPI_DISPLAY_PROP_RENDER_MODE,
"render mode",
"The display rendering mode",
GST_VAAPI_TYPE_RENDER_MODE,
DEFAULT_RENDER_MODE,
G_PARAM_READWRITE);
/**
* GstVaapiDisplay:rotation:
*
* The VA display rotation mode, expressed as a #GstVaapiRotation.
*/
g_properties[PROP_ROTATION] =
g_param_spec_enum(GST_VAAPI_DISPLAY_PROP_ROTATION,
"rotation",
"The display rotation mode",
GST_VAAPI_TYPE_ROTATION,
DEFAULT_ROTATION,
G_PARAM_READWRITE);
/**
* GstVaapiDisplay:hue:
*
* The VA display hue, expressed as a float value. Range is -180.0
* to 180.0. Default value is 0.0 and represents no modification.
*/
g_properties[PROP_HUE] =
g_param_spec_float(GST_VAAPI_DISPLAY_PROP_HUE,
"hue",
"The display hue value",
-180.0, 180.0, 0.0,
G_PARAM_READWRITE);
/**
* GstVaapiDisplay:saturation:
*
* The VA display saturation, expressed as a float value. Range is
* 0.0 to 2.0. Default value is 1.0 and represents no modification.
*/
g_properties[PROP_SATURATION] =
g_param_spec_float(GST_VAAPI_DISPLAY_PROP_SATURATION,
"saturation",
"The display saturation value",
0.0, 2.0, 1.0,
G_PARAM_READWRITE);
/**
* GstVaapiDisplay:brightness:
*
* The VA display brightness, expressed as a float value. Range is
* -1.0 to 1.0. Default value is 0.0 and represents no modification.
*/
g_properties[PROP_BRIGHTNESS] =
g_param_spec_float(GST_VAAPI_DISPLAY_PROP_BRIGHTNESS,
"brightness",
"The display brightness value",
-1.0, 1.0, 0.0,
G_PARAM_READWRITE);
/**
* GstVaapiDisplay:contrast:
*
* The VA display contrast, expressed as a float value. Range is
* 0.0 to 2.0. Default value is 1.0 and represents no modification.
*/
g_properties[PROP_CONTRAST] =
g_param_spec_float(GST_VAAPI_DISPLAY_PROP_CONTRAST,
"contrast",
"The display contrast value",
0.0, 2.0, 1.0,
G_PARAM_READWRITE);
g_object_class_install_properties(object_class, N_PROPERTIES, g_properties);
}
static void
gst_vaapi_display_init(GstVaapiDisplay *display)
{
GstVaapiDisplayPrivate *priv = GST_VAAPI_DISPLAY_GET_PRIVATE(display);
display->priv = priv;
priv->parent = NULL;
priv->display_type = GST_VAAPI_DISPLAY_TYPE_ANY;
priv->display = NULL;
priv->width = 0;
priv->height = 0;
priv->width_mm = 0;
priv->height_mm = 0;
priv->par_n = 1;
priv->par_d = 1;
priv->decoders = NULL;
priv->encoders = NULL;
priv->image_formats = NULL;
priv->subpicture_formats = NULL;
priv->properties = NULL;
priv->create_display = TRUE;
g_rec_mutex_init(&priv->mutex);
}
/**
* gst_vaapi_display_new_with_display:
* @va_display: a #VADisplay
*
* Creates a new #GstVaapiDisplay, using @va_display as the VA
* display.
*
* Return value: the newly created #GstVaapiDisplay object
*/
GstVaapiDisplay *
gst_vaapi_display_new_with_display(VADisplay va_display)
{
GstVaapiDisplayCache * const cache = get_display_cache();
const GstVaapiDisplayInfo *info;
g_return_val_if_fail(va_display != NULL, NULL);
g_return_val_if_fail(cache != NULL, NULL);
info = gst_vaapi_display_cache_lookup_by_va_display(cache, va_display);
if (info)
return g_object_ref(info->display);
return g_object_new(GST_VAAPI_TYPE_DISPLAY,
"display", va_display,
NULL);
}
/**
* gst_vaapi_display_lock:
* @display: a #GstVaapiDisplay
*
* Locks @display. If @display is already locked by another thread,
* the current thread will block until @display is unlocked by the
* other thread.
*/
void
gst_vaapi_display_lock(GstVaapiDisplay *display)
{
GstVaapiDisplayClass *klass;
g_return_if_fail(GST_VAAPI_IS_DISPLAY(display));
klass = GST_VAAPI_DISPLAY_GET_CLASS(display);
if (klass->lock)
klass->lock(display);
}
/**
* gst_vaapi_display_unlock:
* @display: a #GstVaapiDisplay
*
* Unlocks @display. If another thread is blocked in a
* gst_vaapi_display_lock() call for @display, it will be woken and
* can lock @display itself.
*/
void
gst_vaapi_display_unlock(GstVaapiDisplay *display)
{
GstVaapiDisplayClass *klass;
g_return_if_fail(GST_VAAPI_IS_DISPLAY(display));
klass = GST_VAAPI_DISPLAY_GET_CLASS(display);
if (klass->unlock)
klass->unlock(display);
}
/**
* gst_vaapi_display_sync:
* @display: a #GstVaapiDisplay
*
* Flushes any requests queued for the windowing system and waits until
* all requests have been handled. This is often used for making sure
* that the display is synchronized with the current state of the program.
*
* This is most useful for X11. On windowing systems where requests are
* handled synchronously, this function will do nothing.
*/
void
gst_vaapi_display_sync(GstVaapiDisplay *display)
{
GstVaapiDisplayClass *klass;
g_return_if_fail(GST_VAAPI_IS_DISPLAY(display));
klass = GST_VAAPI_DISPLAY_GET_CLASS(display);
if (klass->sync)
klass->sync(display);
else if (klass->flush)
klass->flush(display);
}
/**
* gst_vaapi_display_flush:
* @display: a #GstVaapiDisplay
*
* Flushes any requests queued for the windowing system.
*
* This is most useful for X11. On windowing systems where requests
* are handled synchronously, this function will do nothing.
*/
void
gst_vaapi_display_flush(GstVaapiDisplay *display)
{
GstVaapiDisplayClass *klass;
g_return_if_fail(GST_VAAPI_IS_DISPLAY(display));
klass = GST_VAAPI_DISPLAY_GET_CLASS(display);
if (klass->flush)
klass->flush(display);
}
/**
* gst_vaapi_display_get_display:
* @display: a #GstVaapiDisplay
*
* Returns the #GstVaapiDisplayType bound to @display.
*
* Return value: the #GstVaapiDisplayType
*/
GstVaapiDisplayType
gst_vaapi_display_get_display_type(GstVaapiDisplay *display)
{
g_return_val_if_fail(GST_VAAPI_IS_DISPLAY(display),
GST_VAAPI_DISPLAY_TYPE_ANY);
return display->priv->display_type;
}
/**
* gst_vaapi_display_get_display:
* @display: a #GstVaapiDisplay
*
* Returns the #VADisplay bound to @display.
*
* Return value: the #VADisplay
*/
VADisplay
gst_vaapi_display_get_display(GstVaapiDisplay *display)
{
g_return_val_if_fail(GST_VAAPI_IS_DISPLAY(display), NULL);
return display->priv->display;
}
/**
* gst_vaapi_display_get_width:
* @display: a #GstVaapiDisplay
*
* Retrieves the width of a #GstVaapiDisplay.
*
* Return value: the width of the @display, in pixels
*/
guint
gst_vaapi_display_get_width(GstVaapiDisplay *display)
{
g_return_val_if_fail(GST_VAAPI_IS_DISPLAY(display), 0);
return display->priv->width;
}
/**
* gst_vaapi_display_get_height:
* @display: a #GstVaapiDisplay
*
* Retrieves the height of a #GstVaapiDisplay
*
* Return value: the height of the @display, in pixels
*/
guint
gst_vaapi_display_get_height(GstVaapiDisplay *display)
{
g_return_val_if_fail(GST_VAAPI_IS_DISPLAY(display), 0);
return display->priv->height;
}
/**
* gst_vaapi_display_get_size:
* @display: a #GstVaapiDisplay
* @pwidth: return location for the width, or %NULL
* @pheight: return location for the height, or %NULL
*
* Retrieves the dimensions of a #GstVaapiDisplay.
*/
void
gst_vaapi_display_get_size(GstVaapiDisplay *display, guint *pwidth, guint *pheight)
{
g_return_if_fail(GST_VAAPI_DISPLAY(display));
if (pwidth)
*pwidth = display->priv->width;
if (pheight)
*pheight = display->priv->height;
}
/**
* gst_vaapi_display_get_pixel_aspect_ratio:
* @display: a #GstVaapiDisplay
* @par_n: return location for the numerator of pixel aspect ratio, or %NULL
* @par_d: return location for the denominator of pixel aspect ratio, or %NULL
*
* Retrieves the pixel aspect ratio of a #GstVaapiDisplay.
*/
void
gst_vaapi_display_get_pixel_aspect_ratio(
GstVaapiDisplay *display,
guint *par_n,
guint *par_d
)
{
g_return_if_fail(GST_VAAPI_IS_DISPLAY(display));
if (par_n)
*par_n = display->priv->par_n;
if (par_d)
*par_d = display->priv->par_d;
}
/**
* gst_vaapi_display_get_decode_caps:
* @display: a #GstVaapiDisplay
*
* Gets the supported profiles for decoding as #GstCaps capabilities.
*
* Return value: a newly allocated #GstCaps object, possibly empty
*/
GstCaps *
gst_vaapi_display_get_decode_caps(GstVaapiDisplay *display)
{
g_return_val_if_fail(GST_VAAPI_IS_DISPLAY(display), NULL);
return get_profile_caps(display->priv->decoders);
}
/**
* gst_vaapi_display_has_decoder:
* @display: a #GstVaapiDisplay
* @profile: a #VAProfile
* @entrypoint: a #GstVaaiEntrypoint
*
* Returns whether VA @display supports @profile for decoding at the
* specified @entrypoint.
*
* Return value: %TRUE if VA @display supports @profile for decoding.
*/
gboolean
gst_vaapi_display_has_decoder(
GstVaapiDisplay *display,
GstVaapiProfile profile,
GstVaapiEntrypoint entrypoint
)
{
g_return_val_if_fail(GST_VAAPI_IS_DISPLAY(display), FALSE);
return find_config(display->priv->decoders, profile, entrypoint);
}
/**
* gst_vaapi_display_get_encode_caps:
* @display: a #GstVaapiDisplay
*
* Gets the supported profiles for decoding as #GstCaps capabilities.
*
* Return value: a newly allocated #GstCaps object, possibly empty
*/
GstCaps *
gst_vaapi_display_get_encode_caps(GstVaapiDisplay *display)
{
g_return_val_if_fail(GST_VAAPI_IS_DISPLAY(display), NULL);
return get_profile_caps(display->priv->encoders);
}
/**
* gst_vaapi_display_has_encoder:
* @display: a #GstVaapiDisplay
* @profile: a #VAProfile
* @entrypoint: a #GstVaapiEntrypoint
*
* Returns whether VA @display supports @profile for encoding at the
* specified @entrypoint.
*
* Return value: %TRUE if VA @display supports @profile for encoding.
*/
gboolean
gst_vaapi_display_has_encoder(
GstVaapiDisplay *display,
GstVaapiProfile profile,
GstVaapiEntrypoint entrypoint
)
{
g_return_val_if_fail(GST_VAAPI_IS_DISPLAY(display), FALSE);
return find_config(display->priv->encoders, profile, entrypoint);
}
/**
* gst_vaapi_display_get_image_caps:
* @display: a #GstVaapiDisplay
*
* Gets the supported image formats for gst_vaapi_surface_get_image()
* or gst_vaapi_surface_put_image() as #GstCaps capabilities.
*
* Note that this method does not necessarily map image formats
* returned by vaQueryImageFormats(). The set of capabilities can be
* stripped down, if gstreamer-vaapi does not support the format, or
* expanded to cover compatible formats not exposed by the underlying
* driver. e.g. I420 can be supported even if the driver only exposes
* YV12.
*
* Return value: a newly allocated #GstCaps object, possibly empty
*/
GstCaps *
gst_vaapi_display_get_image_caps(GstVaapiDisplay *display)
{
g_return_val_if_fail(GST_VAAPI_IS_DISPLAY(display), NULL);
return get_format_caps(display->priv->image_formats);
}
/**
* gst_vaapi_display_has_image_format:
* @display: a #GstVaapiDisplay
* @format: a #GstVaapiFormat
*
* Returns whether VA @display supports @format image format.
*
* Return value: %TRUE if VA @display supports @format image format
*/
gboolean
gst_vaapi_display_has_image_format(
GstVaapiDisplay *display,
GstVaapiImageFormat format
)
{
g_return_val_if_fail(GST_VAAPI_IS_DISPLAY(display), FALSE);
g_return_val_if_fail(format, FALSE);
if (find_format(display->priv->image_formats, format))
return TRUE;
/* XXX: try subpicture formats since some drivers could report a
* set of VA image formats that is not a superset of the set of VA
* subpicture formats
*/
return find_format(display->priv->subpicture_formats, format);
}
/**
* gst_vaapi_display_get_subpicture_caps:
* @display: a #GstVaapiDisplay
*
* Gets the supported subpicture formats as #GstCaps capabilities.
*
* Note that this method does not necessarily map subpicture formats
* returned by vaQuerySubpictureFormats(). The set of capabilities can
* be stripped down if gstreamer-vaapi does not support the
* format. e.g. this is the case for paletted formats like IA44.
*
* Return value: a newly allocated #GstCaps object, possibly empty
*/
GstCaps *
gst_vaapi_display_get_subpicture_caps(GstVaapiDisplay *display)
{
g_return_val_if_fail(GST_VAAPI_IS_DISPLAY(display), NULL);
return get_format_caps(display->priv->subpicture_formats);
}
/**
* gst_vaapi_display_has_subpicture_format:
* @display: a #GstVaapiDisplay
* @format: a #GstVaapiFormat
* @flags_ptr: pointer to #GstVaapiSubpictureFlags, or zero
*
* Returns whether VA @display supports @format subpicture format with
* the supplied @flags.
*
* Return value: %TRUE if VA @display supports @format subpicture format
*/
gboolean
gst_vaapi_display_has_subpicture_format(
GstVaapiDisplay *display,
GstVaapiImageFormat format,
guint *flags_ptr
)
{
const GstVaapiFormatInfo *fip;
g_return_val_if_fail(GST_VAAPI_IS_DISPLAY(display), FALSE);
g_return_val_if_fail(format, FALSE);
fip = find_format_info(display->priv->subpicture_formats, format);
if (!fip)
return FALSE;
if (flags_ptr)
*flags_ptr = fip->flags;
return TRUE;
}
/**
* gst_vaapi_display_has_property:
* @display: a #GstVaapiDisplay
* @name: the property name to check
*
* Returns whether VA @display supports the requested property. The
* check is performed against the property @name. So, the client
* application may perform this check only once and cache this
* information.
*
* Return value: %TRUE if VA @display supports property @name
*/
gboolean
gst_vaapi_display_has_property(GstVaapiDisplay *display, const gchar *name)
{
g_return_val_if_fail(GST_VAAPI_IS_DISPLAY(display), FALSE);
g_return_val_if_fail(name, FALSE);
return find_property(display->priv->properties, name) != NULL;
}
static gboolean
get_attribute(GstVaapiDisplay *display, VADisplayAttribType type, gint *value)
{
VADisplayAttribute attr;
VAStatus status;
attr.type = type;
attr.flags = VA_DISPLAY_ATTRIB_GETTABLE;
status = vaGetDisplayAttributes(display->priv->display, &attr, 1);
if (!vaapi_check_status(status, "vaGetDisplayAttributes()"))
return FALSE;
*value = attr.value;
return TRUE;
}
static gboolean
set_attribute(GstVaapiDisplay *display, VADisplayAttribType type, gint value)
{
VADisplayAttribute attr;
VAStatus status;
attr.type = type;
attr.value = value;
attr.flags = VA_DISPLAY_ATTRIB_SETTABLE;
status = vaSetDisplayAttributes(display->priv->display, &attr, 1);
if (!vaapi_check_status(status, "vaSetDisplayAttributes()"))
return FALSE;
return TRUE;
}
static gboolean
get_render_mode_VADisplayAttribRenderMode(
GstVaapiDisplay *display,
GstVaapiRenderMode *pmode
)
{
gint modes, devices;
if (!get_attribute(display, VADisplayAttribRenderDevice, &devices))
return FALSE;
if (!devices)
return FALSE;
if (!get_attribute(display, VADisplayAttribRenderMode, &modes))
return FALSE;
/* Favor "overlay" mode since it is the most restrictive one */
if (modes & (VA_RENDER_MODE_LOCAL_OVERLAY|VA_RENDER_MODE_EXTERNAL_OVERLAY))
*pmode = GST_VAAPI_RENDER_MODE_OVERLAY;
else
*pmode = GST_VAAPI_RENDER_MODE_TEXTURE;
return TRUE;
}
static gboolean
get_render_mode_VADisplayAttribDirectSurface(
GstVaapiDisplay *display,
GstVaapiRenderMode *pmode
)
{
#if VA_CHECK_VERSION(0,34,0)
/* VADisplayAttribDirectsurface was removed in VA-API >= 0.34.0 */
return FALSE;
#else
gint direct_surface;
if (!get_attribute(display, VADisplayAttribDirectSurface, &direct_surface))
return FALSE;
if (direct_surface)
*pmode = GST_VAAPI_RENDER_MODE_OVERLAY;
else
*pmode = GST_VAAPI_RENDER_MODE_TEXTURE;
return TRUE;
#endif
}
static gboolean
get_render_mode_default(
GstVaapiDisplay *display,
GstVaapiRenderMode *pmode
)
{
switch (display->priv->display_type) {
#if USE_WAYLAND
case GST_VAAPI_DISPLAY_TYPE_WAYLAND:
/* wl_buffer mapped from VA surface through vaGetSurfaceBufferWl() */
*pmode = GST_VAAPI_RENDER_MODE_OVERLAY;
break;
#endif
#if USE_DRM
case GST_VAAPI_DISPLAY_TYPE_DRM:
/* vaGetSurfaceBufferDRM() returns the underlying DRM buffer handle */
*pmode = GST_VAAPI_RENDER_MODE_OVERLAY;
break;
#endif
default:
/* This includes VA/X11 and VA/GLX modes */
*pmode = DEFAULT_RENDER_MODE;
break;
}
return TRUE;
}
/**
* gst_vaapi_display_get_render_mode:
* @display: a #GstVaapiDisplay
* @pmode: return location for the VA @display rendering mode
*
* Returns the current VA @display rendering mode.
*
* Return value: %TRUE if VA @display rendering mode could be determined
*/
gboolean
gst_vaapi_display_get_render_mode(
GstVaapiDisplay *display,
GstVaapiRenderMode *pmode
)
{
g_return_val_if_fail(GST_VAAPI_IS_DISPLAY(display), FALSE);
/* Try with render-mode attribute */
if (get_render_mode_VADisplayAttribRenderMode(display, pmode))
return TRUE;
/* Try with direct-surface attribute */
if (get_render_mode_VADisplayAttribDirectSurface(display, pmode))
return TRUE;
/* Default: determine from the display type */
return get_render_mode_default(display, pmode);
}
/**
* gst_vaapi_display_set_render_mode:
* @display: a #GstVaapiDisplay
* @mode: the #GstVaapiRenderMode to set
*
* Sets the VA @display rendering mode to the supplied @mode. This
* function returns %FALSE if the rendering mode could not be set,
* e.g. run-time switching rendering mode is not supported.
*
* Return value: %TRUE if VA @display rendering @mode could be changed
* to the requested value
*/
gboolean
gst_vaapi_display_set_render_mode(
GstVaapiDisplay *display,
GstVaapiRenderMode mode
)
{
gint modes, devices;
g_return_val_if_fail(GST_VAAPI_IS_DISPLAY(display), FALSE);
if (!get_attribute(display, VADisplayAttribRenderDevice, &devices))
return FALSE;
modes = 0;
switch (mode) {
case GST_VAAPI_RENDER_MODE_OVERLAY:
if (devices & VA_RENDER_DEVICE_LOCAL)
modes |= VA_RENDER_MODE_LOCAL_OVERLAY;
if (devices & VA_RENDER_DEVICE_EXTERNAL)
modes |= VA_RENDER_MODE_EXTERNAL_OVERLAY;
break;
case GST_VAAPI_RENDER_MODE_TEXTURE:
if (devices & VA_RENDER_DEVICE_LOCAL)
modes |= VA_RENDER_MODE_LOCAL_GPU;
if (devices & VA_RENDER_DEVICE_EXTERNAL)
modes |= VA_RENDER_MODE_EXTERNAL_GPU;
break;
}
if (!modes)
return FALSE;
if (!set_attribute(display, VADisplayAttribRenderMode, modes))
return FALSE;
g_object_notify_by_pspec(G_OBJECT(display), g_properties[PROP_RENDER_MODE]);
return TRUE;
}
/**
* gst_vaapi_display_get_rotation:
* @display: a #GstVaapiDisplay
*
* Returns the current VA @display rotation angle. If the VA driver
* does not support "rotation" display attribute, then the display is
* assumed to be un-rotated.
*
* Return value: the current #GstVaapiRotation value
*/
GstVaapiRotation
gst_vaapi_display_get_rotation(GstVaapiDisplay *display)
{
gint value;
g_return_val_if_fail(GST_VAAPI_IS_DISPLAY(display), DEFAULT_ROTATION);
if (!get_attribute(display, VADisplayAttribRotation, &value))
value = VA_ROTATION_NONE;
return to_GstVaapiRotation(value);
}
/**
* gst_vaapi_display_set_rotation:
* @display: a #GstVaapiDisplay
* @rotation: the #GstVaapiRotation value to set
*
* Sets the VA @display rotation angle to the supplied @rotation
* value. This function returns %FALSE if the rotation angle could not
* be set, e.g. the VA driver does not allow to change the display
* rotation angle.
*
* Return value: %TRUE if VA @display rotation angle could be changed
* to the requested value
*/
gboolean
gst_vaapi_display_set_rotation(
GstVaapiDisplay *display,
GstVaapiRotation rotation
)
{
guint value;
g_return_val_if_fail(GST_VAAPI_IS_DISPLAY(display), FALSE);
value = from_GstVaapiRotation(rotation);
if (!set_attribute(display, VADisplayAttribRotation, value))
return FALSE;
g_object_notify_by_pspec(G_OBJECT(display), g_properties[PROP_ROTATION]);
return TRUE;
}
/* Get color balance attributes */
static gboolean
get_color_balance(GstVaapiDisplay *display, guint prop_id, gfloat *v)
{
GParamSpecFloat * const pspec = G_PARAM_SPEC_FLOAT(g_properties[prop_id]);
const GstVaapiProperty *prop;
const VADisplayAttribute *attr;
gfloat out_value;
gint value;
if (!pspec)
return FALSE;
prop = find_property_by_pspec(display, &pspec->parent_instance);
if (!prop)
return FALSE;
attr = &prop->attribute;
if (!get_attribute(display, attr->type, &value))
return FALSE;
/* Scale wrt. the medium ("default") value */
out_value = pspec->default_value;
if (value > attr->value)
out_value += ((gfloat)(value - attr->value) /
(attr->max_value - attr->value) *
(pspec->maximum - pspec->default_value));
else if (value < attr->value)
out_value -= ((gfloat)(attr->value - value) /
(attr->value - attr->min_value) *
(pspec->default_value - pspec->minimum));
*v = out_value;
return TRUE;
}
/* Set color balance attribute */
static gboolean
set_color_balance(GstVaapiDisplay *display, guint prop_id, gfloat v)
{
GParamSpecFloat * const pspec = G_PARAM_SPEC_FLOAT(g_properties[prop_id]);
const GstVaapiProperty *prop;
const VADisplayAttribute *attr;
gint value;
if (!pspec)
return FALSE;
prop = find_property_by_pspec(display, &pspec->parent_instance);
if (!prop)
return FALSE;
attr = &prop->attribute;
/* Scale wrt. the medium ("default") value */
value = attr->value;
if (v > pspec->default_value)
value += ((v - pspec->default_value) /
(pspec->maximum - pspec->default_value) *
(attr->max_value - attr->value));
else if (v < pspec->default_value)
value -= ((pspec->default_value - v) /
(pspec->default_value - pspec->minimum) *
(attr->value - attr->min_value));
if (!set_attribute(display, attr->type, value))
return FALSE;
g_object_notify_by_pspec(G_OBJECT(display), g_properties[prop_id]);
return TRUE;
}
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