mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-11-03 16:09:39 +00:00
Code Issues 1 Projects Releases Wiki Activity
gstreamer/subprojects/gst-plugins-base/gst-libs/gst/gl/gstglformat.c

795 lines
23 KiB
C
Raw Blame History

/*
* GStreamer
* Copyright (C) 2015 Matthew Waters <matthew@centricular.com>
*
* 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:gstglformat
* @title: GstGLFormat
* @short_description: utilities for dealing with OpenGL formats
* @see_also: #GstGLBaseMemory, #GstGLMemory, #GstGLFramebuffer, #GstGLBuffer
*
* Some useful utilities for converting between various formats and OpenGL
* formats.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstglformat.h"
#include "gstglcontext.h"
#include "gstglfuncs.h"
#define USING_OPENGL(context) (gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL, 1, 0))
#define USING_OPENGL3(context) (gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL3, 3, 1))
#define USING_GLES(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES, 1, 0))
#define USING_GLES2(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES2, 2, 0))
#define USING_GLES3(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES2, 3, 0))
#ifndef GL_TEXTURE_RECTANGLE
#define GL_TEXTURE_RECTANGLE 0x84F5
#endif
#ifndef GL_TEXTURE_EXTERNAL_OES
#define GL_TEXTURE_EXTERNAL_OES 0x8D65
#endif
#ifndef GL_UNSIGNED_INT_2_10_10_10_REV
#define GL_UNSIGNED_INT_2_10_10_10_REV 0x8368
#endif
static inline guint
_gl_format_n_components (guint format)
{
switch (format) {
case GST_VIDEO_GL_TEXTURE_TYPE_RGBA:
case GST_GL_RGBA:
case GST_GL_RGBA8:
case GST_GL_RGBA16:
case GST_GL_RGB10_A2:
return 4;
case GST_VIDEO_GL_TEXTURE_TYPE_RGB:
case GST_VIDEO_GL_TEXTURE_TYPE_RGB16:
case GST_GL_RGB:
case GST_GL_RGB8:
case GST_GL_RGB16:
case GST_GL_RGB565:
return 3;
case GST_VIDEO_GL_TEXTURE_TYPE_LUMINANCE_ALPHA:
case GST_VIDEO_GL_TEXTURE_TYPE_RG:
case GST_GL_LUMINANCE_ALPHA:
case GST_GL_RG:
case GST_GL_RG8:
case GST_GL_RG16:
return 2;
case GST_VIDEO_GL_TEXTURE_TYPE_LUMINANCE:
case GST_VIDEO_GL_TEXTURE_TYPE_R:
case GST_GL_LUMINANCE:
case GST_GL_ALPHA:
case GST_GL_RED:
case GST_GL_R8:
case GST_GL_R16:
return 1;
default:
return 0;
}
}
static inline guint
_gl_type_n_components (guint type)
{
switch (type) {
case GL_UNSIGNED_BYTE:
case GL_UNSIGNED_SHORT:
return 1;
case GL_UNSIGNED_SHORT_5_6_5:
return 3;
case GL_UNSIGNED_INT_2_10_10_10_REV:
return 4;
default:
g_assert_not_reached ();
return 0;
}
}
static inline guint
_gl_type_n_bytes (guint type)
{
switch (type) {
case GL_UNSIGNED_BYTE:
return 1;
case GL_UNSIGNED_SHORT:
case GL_UNSIGNED_SHORT_5_6_5:
return 2;
case GL_UNSIGNED_INT_2_10_10_10_REV:
return 4;
default:
g_assert_not_reached ();
return 0;
}
}
/**
* gst_gl_format_type_n_bytes:
* @format: the OpenGL format, `GL_RGBA`, `GL_LUMINANCE`, etc
* @type: the OpenGL type, `GL_UNSIGNED_BYTE`, `GL_FLOAT`, etc
*
* Returns: the number of bytes the specified @format, @type combination takes
* per pixel
*/
guint
gst_gl_format_type_n_bytes (guint format, guint type)
{
return _gl_format_n_components (format) / _gl_type_n_components (type) *
_gl_type_n_bytes (type);
}
/**
* gst_gl_format_from_video_info:
* @context: a #GstGLContext
* @vinfo: a #GstVideoInfo
* @plane: the plane number in @vinfo
*
* Returns: the #GstGLFormat necessary for holding the data in @plane of @vinfo
*/
GstGLFormat
gst_gl_format_from_video_info (GstGLContext * context,
const GstVideoInfo * vinfo, guint plane)
{
gboolean texture_rg =
gst_gl_context_check_feature (context, "GL_EXT_texture_rg")
|| gst_gl_context_check_gl_version (context, GST_GL_API_GLES2, 3, 0)
|| gst_gl_context_check_feature (context, "GL_ARB_texture_rg")
|| gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL3, 3, 0);
GstVideoFormat v_format = GST_VIDEO_INFO_FORMAT (vinfo);
guint n_plane_components;
switch (v_format) {
case GST_VIDEO_FORMAT_RGBx:
case GST_VIDEO_FORMAT_BGRx:
case GST_VIDEO_FORMAT_xRGB:
case GST_VIDEO_FORMAT_xBGR:
case GST_VIDEO_FORMAT_RGBA:
case GST_VIDEO_FORMAT_BGRA:
case GST_VIDEO_FORMAT_ARGB:
case GST_VIDEO_FORMAT_ABGR:
case GST_VIDEO_FORMAT_AYUV:
case GST_VIDEO_FORMAT_VUYA:
n_plane_components = 4;
break;
case GST_VIDEO_FORMAT_RGBA64_LE:
case GST_VIDEO_FORMAT_RGBA64_BE:
case GST_VIDEO_FORMAT_ARGB64:
return GST_GL_RGBA16;
case GST_VIDEO_FORMAT_RGB:
case GST_VIDEO_FORMAT_BGR:
n_plane_components = 3;
break;
case GST_VIDEO_FORMAT_RGB16:
case GST_VIDEO_FORMAT_BGR16:
return GST_GL_RGB565;
break;
case GST_VIDEO_FORMAT_GRAY16_BE:
case GST_VIDEO_FORMAT_GRAY16_LE:
case GST_VIDEO_FORMAT_YUY2:
case GST_VIDEO_FORMAT_UYVY:
n_plane_components = 2;
break;
case GST_VIDEO_FORMAT_NV12:
case GST_VIDEO_FORMAT_NV21:
case GST_VIDEO_FORMAT_NV16:
case GST_VIDEO_FORMAT_NV61:
case GST_VIDEO_FORMAT_NV12_16L32S:
case GST_VIDEO_FORMAT_NV12_4L4:
n_plane_components = plane == 0 ? 1 : 2;
break;
case GST_VIDEO_FORMAT_AV12:
n_plane_components = (plane == 1) ? 2 : 1;
break;
case GST_VIDEO_FORMAT_GRAY8:
case GST_VIDEO_FORMAT_Y444:
case GST_VIDEO_FORMAT_Y42B:
case GST_VIDEO_FORMAT_Y41B:
case GST_VIDEO_FORMAT_I420:
case GST_VIDEO_FORMAT_YV12:
case GST_VIDEO_FORMAT_A420:
n_plane_components = 1;
break;
case GST_VIDEO_FORMAT_BGR10A2_LE:
case GST_VIDEO_FORMAT_RGB10A2_LE:
case GST_VIDEO_FORMAT_Y410:
return GST_GL_RGB10_A2;
case GST_VIDEO_FORMAT_P010_10LE:
case GST_VIDEO_FORMAT_P010_10BE:
case GST_VIDEO_FORMAT_P012_LE:
case GST_VIDEO_FORMAT_P012_BE:
case GST_VIDEO_FORMAT_P016_LE:
case GST_VIDEO_FORMAT_P016_BE:
return plane == 0 ? GST_GL_R16 : GST_GL_RG16;
case GST_VIDEO_FORMAT_Y210:
case GST_VIDEO_FORMAT_Y212_LE:
case GST_VIDEO_FORMAT_Y212_BE:
return GST_GL_RG16;
case GST_VIDEO_FORMAT_Y412_LE:
case GST_VIDEO_FORMAT_Y412_BE:
return GST_GL_RGBA16;
case GST_VIDEO_FORMAT_GBR:
case GST_VIDEO_FORMAT_RGBP:
case GST_VIDEO_FORMAT_BGRP:
case GST_VIDEO_FORMAT_GBRA:
return GST_GL_R8;
case GST_VIDEO_FORMAT_A420_10LE:
case GST_VIDEO_FORMAT_A420_10BE:
case GST_VIDEO_FORMAT_A422_10LE:
case GST_VIDEO_FORMAT_A422_10BE:
case GST_VIDEO_FORMAT_A444_10LE:
case GST_VIDEO_FORMAT_A444_10BE:
return GST_GL_R16;
default:
n_plane_components = 4;
g_assert_not_reached ();
break;
}
switch (n_plane_components) {
case 4:
return GST_GL_RGBA;
case 3:
return GST_GL_RGB;
case 2:
return texture_rg ? GST_GL_RG : GST_GL_LUMINANCE_ALPHA;
case 1:
return texture_rg ? GST_GL_RED : GST_GL_LUMINANCE;
default:
break;
}
g_critical ("Unknown video format 0x%x provided", v_format);
return 0;
}
/**
* gst_gl_sized_gl_format_from_gl_format_type:
* @context: a #GstGLContext
* @format: an OpenGL format, `GL_RGBA`, `GL_LUMINANCE`, etc
* @type: an OpenGL type, `GL_UNSIGNED_BYTE`, `GL_FLOAT`, etc
*
* Returns: the sized internal format specified by @format and @type that can
* be used in @context
*/
guint
gst_gl_sized_gl_format_from_gl_format_type (GstGLContext * context,
guint format, guint type)
{
gboolean ext_texture_rg =
gst_gl_context_check_feature (context, "GL_EXT_texture_rg");
switch (format) {
case GST_GL_RGBA:
switch (type) {
case GL_UNSIGNED_BYTE:
return USING_GLES2 (context)
&& !USING_GLES3 (context) ? GST_GL_RGBA : GST_GL_RGBA8;
case GL_UNSIGNED_SHORT:
return GST_GL_RGBA16;
case GL_UNSIGNED_INT_2_10_10_10_REV:
return GST_GL_RGB10_A2;
}
break;
case GST_GL_RGB:
switch (type) {
case GL_UNSIGNED_BYTE:
return USING_GLES2 (context)
&& !USING_GLES3 (context) ? GST_GL_RGB : GST_GL_RGB8;
case GL_UNSIGNED_SHORT_5_6_5:
return GST_GL_RGB565;
case GL_UNSIGNED_SHORT:
return GST_GL_RGB16;
}
break;
case GST_GL_RG:
switch (type) {
case GL_UNSIGNED_BYTE:
if (!USING_GLES3 (context) && USING_GLES2 (context) && ext_texture_rg)
return GST_GL_RG;
return GST_GL_RG8;
case GL_UNSIGNED_SHORT:
return GST_GL_RG16;
}
break;
case GST_GL_RED:
switch (type) {
case GL_UNSIGNED_BYTE:
if (!USING_GLES3 (context) && USING_GLES2 (context) && ext_texture_rg)
return GST_GL_RED;
return GST_GL_R8;
case GL_UNSIGNED_SHORT:
return GST_GL_R16;
}
break;
case GST_GL_RGBA8:
case GST_GL_RGBA16:
case GST_GL_RGB8:
case GST_GL_RGB16:
case GST_GL_RGB565:
case GST_GL_RG8:
case GST_GL_R8:
case GST_GL_LUMINANCE:
case GST_GL_LUMINANCE_ALPHA:
case GST_GL_ALPHA:
case GST_GL_DEPTH_COMPONENT16:
case GST_GL_DEPTH24_STENCIL8:
case GST_GL_RGB10_A2:
case GST_GL_R16:
case GST_GL_RG16:
return format;
default:
g_critical ("Unknown GL format 0x%x type 0x%x provided", format, type);
return format;
}
g_assert_not_reached ();
return 0;
}
/**
* gst_gl_format_type_from_sized_gl_format:
* @format: the sized internal #GstGLFormat
* @unsized_format: (out): location for the resulting unsized #GstGLFormat
* @gl_type: (out): location for the resulting GL type
*
* Get the unsized format and type from @format for usage in glReadPixels,
* glTex{Sub}Image*, glTexImage* and similar functions.
*
* Since: 1.16
*/
void
gst_gl_format_type_from_sized_gl_format (GstGLFormat format,
GstGLFormat * unsized_format, guint * gl_type)
{
g_return_if_fail (unsized_format != NULL);
g_return_if_fail (gl_type != NULL);
switch (format) {
case GST_GL_RGBA8:
*unsized_format = GST_GL_RGBA;
*gl_type = GL_UNSIGNED_BYTE;
break;
case GST_GL_RGB8:
*unsized_format = GST_GL_RGB;
*gl_type = GL_UNSIGNED_BYTE;
break;
case GST_GL_RGBA16:
*unsized_format = GST_GL_RGBA;
*gl_type = GL_UNSIGNED_SHORT;
break;
case GST_GL_RGB16:
*unsized_format = GST_GL_RGB;
*gl_type = GL_UNSIGNED_SHORT;
break;
case GST_GL_RGB565:
*unsized_format = GST_GL_RGB;
*gl_type = GL_UNSIGNED_SHORT_5_6_5;
break;
case GST_GL_RG8:
*unsized_format = GST_GL_RG;
*gl_type = GL_UNSIGNED_BYTE;
break;
case GST_GL_R8:
*unsized_format = GST_GL_RED;
*gl_type = GL_UNSIGNED_BYTE;
break;
case GST_GL_RGBA:
case GST_GL_RGB:
case GST_GL_RG:
case GST_GL_RED:
case GST_GL_LUMINANCE:
case GST_GL_LUMINANCE_ALPHA:
case GST_GL_ALPHA:
*unsized_format = format;
*gl_type = GL_UNSIGNED_BYTE;
break;
case GST_GL_RGB10_A2:
*unsized_format = GST_GL_RGBA;
*gl_type = GL_UNSIGNED_INT_2_10_10_10_REV;
break;
case GST_GL_R16:
*unsized_format = GST_GL_RED;
*gl_type = GL_UNSIGNED_SHORT;
break;
case GST_GL_RG16:
*unsized_format = GST_GL_RG;
*gl_type = GL_UNSIGNED_SHORT;
break;
default:
g_critical ("Unknown GL format 0x%x provided", format);
*unsized_format = format;
*gl_type = GL_UNSIGNED_BYTE;
return;
}
}
/**
* gst_gl_format_n_components:
* @gl_format: the #GstGLFormat
*
* Returns: the number of components in a #GstGLFormat
*
* Since: 1.24
*/
guint
gst_gl_format_n_components (GstGLFormat gl_format)
{
switch (gl_format) {
case GST_GL_LUMINANCE:
case GST_GL_ALPHA:
case GST_GL_RED:
case GST_GL_R8:
case GST_GL_DEPTH_COMPONENT16:
case GST_GL_R16:
return 1;
case GST_GL_LUMINANCE_ALPHA:
case GST_GL_RG:
case GST_GL_RG8:
case GST_GL_DEPTH24_STENCIL8:
case GST_GL_RG16:
return 2;
case GST_GL_RGB:
case GST_GL_RGB8:
case GST_GL_RGB565:
case GST_GL_RGB16:
return 3;
case GST_GL_RGBA:
case GST_GL_RGBA8:
case GST_GL_RGBA16:
case GST_GL_RGB10_A2:
return 4;
default:
g_warn_if_reached ();
return 0;
}
}
static void
get_single_planar_format_gl_swizzle_order (GstVideoFormat format,
gint swizzle[GST_VIDEO_MAX_COMPONENTS])
{
const GstVideoFormatInfo *finfo = gst_video_format_get_info (format);
int c_i = 0, i;
g_return_if_fail (finfo->flags & GST_VIDEO_FORMAT_FLAG_RGB
|| format == GST_VIDEO_FORMAT_AYUV || format == GST_VIDEO_FORMAT_VUYA);
for (i = 0; i < finfo->n_components; i++) {
swizzle[c_i++] = finfo->poffset[i] / (GST_ROUND_UP_8 (finfo->bits) / 8);
}
/* special case spaced RGB formats as the space does not contain a poffset
* value and we need all four components to be valid in order to swizzle
* correctly */
if (format == GST_VIDEO_FORMAT_xRGB || format == GST_VIDEO_FORMAT_xBGR) {
swizzle[c_i++] = 0;
} else if (format == GST_VIDEO_FORMAT_RGBx || format == GST_VIDEO_FORMAT_BGRx
|| format == GST_VIDEO_FORMAT_RGB || format == GST_VIDEO_FORMAT_BGR) {
swizzle[c_i++] = 3;
} else {
for (i = finfo->n_components; i < GST_VIDEO_MAX_COMPONENTS; i++) {
swizzle[c_i++] = -1;
}
}
}
/**
* gst_gl_video_format_swizzle:
* @video_format: the #GstVideoFormat in use
* @swizzle: (out) (array fixed-size=4): the returned swizzle indices
*
* Calculates the swizzle indices for @video_format and @gl_format in order to
* access a texture such that accessing a texel from a texture through the swizzle
* index produces values in the order (R, G, B, A) or (Y, U, V, A).
*
* For multi-planer formats, the swizzle index uses the same component order (RGBA/YUVA)
* and should be applied after combining multiple planes into a single rgba/yuva value.
* e.g. sampling from a NV12 format would have Y from one texture and UV from
* another texture into a (Y, U, V) value. Add an Aplha component and then
* perform swizzling. Sampling from NV21 would produce (Y, V, U) which is then
* swizzled to (Y, U, V).
*
* Returns: whether valid swizzle indices could be found
*
* Since: 1.24
*/
gboolean
gst_gl_video_format_swizzle (GstVideoFormat video_format, int *swizzle)
{
const GstVideoFormatInfo *finfo = gst_video_format_get_info (video_format);
if (finfo->n_planes == 1) {
get_single_planar_format_gl_swizzle_order (video_format, swizzle);
return TRUE;
}
switch (video_format) {
case GST_VIDEO_FORMAT_BGRP:
get_single_planar_format_gl_swizzle_order (GST_VIDEO_FORMAT_BGR, swizzle);
return TRUE;
case GST_VIDEO_FORMAT_RGBP:
get_single_planar_format_gl_swizzle_order (GST_VIDEO_FORMAT_RGB, swizzle);
return TRUE;
case GST_VIDEO_FORMAT_AV12:
case GST_VIDEO_FORMAT_NV12:
case GST_VIDEO_FORMAT_NV16:
case GST_VIDEO_FORMAT_P010_10LE:
case GST_VIDEO_FORMAT_P010_10BE:
case GST_VIDEO_FORMAT_P012_LE:
case GST_VIDEO_FORMAT_P012_BE:
case GST_VIDEO_FORMAT_P016_LE:
case GST_VIDEO_FORMAT_P016_BE:
case GST_VIDEO_FORMAT_NV12_16L32S:
case GST_VIDEO_FORMAT_NV12_4L4:
case GST_VIDEO_FORMAT_I420:
case GST_VIDEO_FORMAT_Y444:
case GST_VIDEO_FORMAT_Y42B:
case GST_VIDEO_FORMAT_Y41B:
case GST_VIDEO_FORMAT_A420:
case GST_VIDEO_FORMAT_A420_10LE:
case GST_VIDEO_FORMAT_A420_10BE:
case GST_VIDEO_FORMAT_A422_10LE:
case GST_VIDEO_FORMAT_A422_10BE:
case GST_VIDEO_FORMAT_A444_10LE:
case GST_VIDEO_FORMAT_A444_10BE:
swizzle[0] = 0;
swizzle[1] = 1;
swizzle[2] = 2;
swizzle[3] = 3;
return TRUE;
case GST_VIDEO_FORMAT_NV21:
case GST_VIDEO_FORMAT_NV61:
case GST_VIDEO_FORMAT_YV12:
swizzle[0] = 0;
swizzle[1] = 2;
swizzle[2] = 1;
swizzle[3] = 3;
return TRUE;
case GST_VIDEO_FORMAT_Y410:
case GST_VIDEO_FORMAT_Y412_LE:
case GST_VIDEO_FORMAT_Y412_BE:
swizzle[0] = 1;
swizzle[1] = 0;
swizzle[2] = 2;
swizzle[3] = 3;
return TRUE;
/* TODO: deal with YUY2 variants */
default:
return FALSE;
}
}
/**
* gst_gl_swizzle_invert:
* @swizzle: (array fixed-size=4): input swizzle
* @inversion: (out) (array fixed-size=4): resulting inversion
*
* Given @swizzle, produce @inversion such that:
*
* @swizzle[@inversion[i]] == identity[i] where:
* - identity = {0, 1, 2,...}
* - unset fields are marked by -1
*
* Since: 1.24
*/
void
gst_gl_swizzle_invert (gint * swizzle, gint * inversion)
{
int i;
for (i = 0; i < GST_VIDEO_MAX_COMPONENTS; i++) {
inversion[i] = -1;
}
for (i = 0; i < GST_VIDEO_MAX_COMPONENTS; i++) {
if (swizzle[i] >= 0 && swizzle[i] < 4 && inversion[swizzle[i]] == -1) {
inversion[swizzle[i]] = i;
}
}
}
/**
* gst_gl_format_is_supported:
* @context: a #GstGLContext
* @format: the #GstGLFormat to check is supported by @context
*
* Returns: Whether @format is supported by @context based on the OpenGL API,
* version, or available OpenGL extension/s.
*
* Since: 1.16
*/
gboolean
gst_gl_format_is_supported (GstGLContext * context, GstGLFormat format)
{
g_return_val_if_fail (GST_IS_GL_CONTEXT (context), FALSE);
switch (format) {
case GST_GL_RGBA:
case GST_GL_RGB:
return TRUE;
case GST_GL_LUMINANCE:
case GST_GL_ALPHA:
case GST_GL_LUMINANCE_ALPHA:
/* deprecated/removed in core GL3 contexts */
return USING_OPENGL (context) || USING_GLES2 (context);
case GST_GL_RG:
case GST_GL_RED:
return gst_gl_context_check_gl_version (context, GST_GL_API_GLES2, 3, 0)
|| gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL3, 3, 0)
|| gst_gl_context_check_feature (context, "GL_EXT_texture_rg")
|| gst_gl_context_check_feature (context, "GL_ARB_texture_rg");
case GST_GL_R8:
case GST_GL_RG8:
return USING_GLES3 (context)
|| gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL3, 3, 0)
|| gst_gl_context_check_feature (context, "GL_ARB_texture_rg");
case GST_GL_RGB8:
case GST_GL_RGBA8:
return (USING_GLES3 (context) && !USING_GLES2 (context))
|| USING_OPENGL (context) || USING_OPENGL3 (context);
case GST_GL_RGB16:
case GST_GL_RGBA16:
return USING_OPENGL (context) || USING_OPENGL3 (context)
|| USING_GLES3 (context);
case GST_GL_RGB565:
return USING_GLES2 (context) || (USING_OPENGL3 (context)
&& gst_gl_context_check_feature (context,
"GL_ARB_ES2_compatibility"));
case GST_GL_DEPTH_COMPONENT16:
return gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL, 1, 4)
|| USING_GLES2 (context)
|| gst_gl_context_check_feature (context, "GL_ARB_depth_texture")
|| gst_gl_context_check_feature (context, "GL_OES_depth_texture");
case GST_GL_DEPTH24_STENCIL8:
return gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL, 3, 0)
|| USING_GLES3 (context)
|| gst_gl_context_check_feature (context,
"GL_OES_packed_depth_stencil")
|| gst_gl_context_check_feature (context,
"GL_EXT_packed_depth_stencil");
case GST_GL_RGB10_A2:
return USING_OPENGL (context) || USING_OPENGL3 (context)
|| USING_GLES3 (context)
|| gst_gl_context_check_feature (context,
"GL_OES_required_internalformat");
case GST_GL_R16:
case GST_GL_RG16:
return gst_gl_context_check_gl_version (context,
GST_GL_API_OPENGL | GST_GL_API_OPENGL3, 3, 0)
|| (gst_gl_context_check_gl_version (context, GST_GL_API_GLES2, 3, 1)
&& gst_gl_context_check_feature (context, "GL_EXT_texture_norm16"));
default:
g_assert_not_reached ();
return FALSE;
}
}
/**
* gst_gl_texture_target_to_string:
* @target: a #GstGLTextureTarget
*
* Returns: (nullable): the stringified version of @target or %NULL
*/
const gchar *
gst_gl_texture_target_to_string (GstGLTextureTarget target)
{
switch (target) {
case GST_GL_TEXTURE_TARGET_2D:
return GST_GL_TEXTURE_TARGET_2D_STR;
case GST_GL_TEXTURE_TARGET_RECTANGLE:
return GST_GL_TEXTURE_TARGET_RECTANGLE_STR;
case GST_GL_TEXTURE_TARGET_EXTERNAL_OES:
return GST_GL_TEXTURE_TARGET_EXTERNAL_OES_STR;
default:
return NULL;
}
}
/**
* gst_gl_texture_target_from_string:
* @str: a string equivalent to one of the GST_GL_TEXTURE_TARGET_*_STR values
*
* Returns: the #GstGLTextureTarget represented by @str or
* %GST_GL_TEXTURE_TARGET_NONE
*/
GstGLTextureTarget
gst_gl_texture_target_from_string (const gchar * str)
{
if (!str)
return GST_GL_TEXTURE_TARGET_NONE;
if (g_strcmp0 (str, GST_GL_TEXTURE_TARGET_2D_STR) == 0)
return GST_GL_TEXTURE_TARGET_2D;
if (g_strcmp0 (str, GST_GL_TEXTURE_TARGET_RECTANGLE_STR) == 0)
return GST_GL_TEXTURE_TARGET_RECTANGLE;
if (g_strcmp0 (str, GST_GL_TEXTURE_TARGET_EXTERNAL_OES_STR) == 0)
return GST_GL_TEXTURE_TARGET_EXTERNAL_OES;
return GST_GL_TEXTURE_TARGET_NONE;
}
/**
* gst_gl_texture_target_to_gl:
* @target: a #GstGLTextureTarget
*
* Returns: the OpenGL value for binding the @target with glBindTexture() and
* similar functions or 0
*/
guint
gst_gl_texture_target_to_gl (GstGLTextureTarget target)
{
switch (target) {
case GST_GL_TEXTURE_TARGET_2D:
return GL_TEXTURE_2D;
case GST_GL_TEXTURE_TARGET_RECTANGLE:
return GL_TEXTURE_RECTANGLE;
case GST_GL_TEXTURE_TARGET_EXTERNAL_OES:
return GL_TEXTURE_EXTERNAL_OES;
default:
return 0;
}
}
/**
* gst_gl_texture_target_from_gl:
* @target: an OpenGL texture binding target
*
* Returns: the #GstGLTextureTarget that's equiavalant to @target or
* %GST_GL_TEXTURE_TARGET_NONE
*/
GstGLTextureTarget
gst_gl_texture_target_from_gl (guint target)
{
switch (target) {
case GL_TEXTURE_2D:
return GST_GL_TEXTURE_TARGET_2D;
case GL_TEXTURE_RECTANGLE:
return GST_GL_TEXTURE_TARGET_RECTANGLE;
case GL_TEXTURE_EXTERNAL_OES:
return GST_GL_TEXTURE_TARGET_EXTERNAL_OES;
default:
return GST_GL_TEXTURE_TARGET_NONE;
}
}
/**
* gst_gl_texture_target_to_buffer_pool_option:
* @target: a #GstGLTextureTarget
*
* Returns: (nullable): a string representing the @GstBufferPoolOption specified by @target
*/
const gchar *
gst_gl_texture_target_to_buffer_pool_option (GstGLTextureTarget target)
{
switch (target) {
case GST_GL_TEXTURE_TARGET_2D:
return GST_BUFFER_POOL_OPTION_GL_TEXTURE_TARGET_2D;
case GST_GL_TEXTURE_TARGET_RECTANGLE:
return GST_BUFFER_POOL_OPTION_GL_TEXTURE_TARGET_RECTANGLE;
case GST_GL_TEXTURE_TARGET_EXTERNAL_OES:
return GST_BUFFER_POOL_OPTION_GL_TEXTURE_TARGET_EXTERNAL_OES;
default:
return NULL;
}
}
Reference in a new issue View git blame Copy permalink